Opening / closing device for opening / closing body

Abstract

Provided is an opening / closing device for an opening / closing body, capable of simplifying a structure by reducing the number of components. This opening / closing device 10 comprises: a base member 20; an opening / closing body 40 having an engaged part 58; a lock member 60 provided with an abutting part 65 and an engaging part 70; and a biasing member 80 provided with a wound part 81, a first arm part 83, and a second arm part 85. The opening / closing body 40 has a first locking part 54. The first arm part 83 is locked to the first locking part 54 and is biased in a direction in which the opening / closing body is closed with respect to an opening. The lock member 60 has a second locking part 74. The second arm part 85 is locked to the second locking portion 74. The lock member 60 is biased in the direction opposite to the direction in which the opening / closing body is biased and so that the abutting part 65 enters an insertion path along an insertion direction of an insertion member into the opening.

Description

Opening and closing device for opening and closing body

[0001] The present invention relates to an opening / closing device for an opening / closing body that opens and closes an opening of a fixed member having an opening into which an insertion member is inserted.

[0002] For example, when a charging gun (power supply gun) is inserted into the charging port (also called a charging socket or charging port) of an electric vehicle, electricity is supplied from an electricity supply facility (such as a power station) to the electric vehicle's battery, thereby charging the battery.

[0003] Such a charging port is located inside a power supply opening formed in the vehicle body, and the power supply opening can be opened and closed by a lid. Furthermore, the charging port generally has an opening for normal charging and an opening for rapid charging. Furthermore, the rapid charging opening is often further covered by an openable cover.

[0004] However, there have been cases where the lid of the power supply opening has been closed while the cover of the quick charging opening has been forgotten, which can damage the cover of the quick charging opening.

[0005] Therefore, a structure exists in which the cover of the quick charging opening is opened, charging is performed with the charging gun, and then the cover of the quick charging opening is automatically closed when the charging gun is removed from the quick charging opening.

[0006] For example, the following Patent Document 1 describes a connection device for charging a vehicle battery device, which has a cover flap that is attached to an opening for quick charging so that it can be opened and closed, a biasing member that biases the cover flap to a closed state, a latching means that holds the cover flap in an open state and releases the held state when a charging gun is inserted, and a spring member that biases the latching means to a latched position.

[0007] US11121496B2

[0008] In the case of the connection device of Patent Document 1, two biasing members were required: a biasing member that biases the cover flap to a closed state, and a spring member that biases the latch means to a latched position, resulting in a large number of parts and a complex structure.

[0009] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an opening and closing device for an opening and closing body that can reduce the number of parts and simplify the structure.

[0010] In order to achieve the above object, the present invention provides an opening / closing device for an opening / closing body that opens and closes an opening of a fixed member provided with the opening into which an insertion member is inserted, the opening / closing device comprising: a base member fixed to the fixed member; an opening / closing body that is rotatably attached to the base member via a first rotation support part to open and close the opening and that is provided with an engaged part; a locking member that is rotatably attached to the base member via a second rotation support part and that is provided with an abutment part with which the insertion member abuts and an engaging part that engages with the engaged part to hold the opening / closing body in an open state when the opening / closing body is opened relative to the opening; and a biasing member that is provided with a winding part, a first arm part extending from one end of the winding part, and a second arm part extending from the other end of the winding part, and the opening / closing body has a first locking part, and the first arm part is locked with the first locking part to lock the opening The opening / closing body is biased in a direction to close the opening, the locking member has a second engaging portion, the second arm portion is engaged with the second engaging portion, and the locking member is biased in a direction opposite to the direction in which the opening / closing body is biased and so that the abutting portion enters an insertion path along the insertion direction of the insertion member into the opening, and a stopper portion is provided between the base member and the locking member and / or between the opening / closing body and the locking member to prevent the locking member from coming off the base member, and when the insertion member is inserted into the opening and abuts the abutting portion, the locking member rotates in the direction opposite to the biasing direction against the biasing force of the biasing member, and the engagement of the engaging portion with the engaged portion is released, resulting in a disengaged state.

[0011] According to the present invention, one biasing member can simultaneously bias two members, the opening / closing body and the locking member, thereby reducing the number of parts and simplifying the structure.

[0012] 1 is an exploded perspective view showing one embodiment of an opening / closing device for an opening / closing body according to the present invention. FIG. 1 is a perspective view of the opening / closing device for the opening / closing body. FIG. 2 is an enlarged perspective view of an opening / closing body constituting the opening / closing device for the opening / closing body, as viewed from a direction different from that of FIG. 1. FIG. 3 is a cross-sectional view showing a state in which the opening / closing device for the opening / closing body is fixed to a fixed member, and the opening / closing body is closed relative to an opening of the fixed member. FIG. 4 is an enlarged cross-sectional view of a main part of FIG. 4. FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 2. FIG. 3 is a plan view of an opening / closing device for an opening / closing body according to the present invention. FIG. 4 is a cross-sectional view taken along the line B-B in FIG. 2. FIG. 4 is a cross-sectional view showing a state in which the opening / closing body is opened relative to an opening of the fixed member in the state of FIG. 4. FIG. 9 is an enlarged cross-sectional view of a main part of FIG. 9. FIG. 9 is a cross-sectional view showing a state in which an insertion member is inserted into an opening of the fixed member in the state of FIG. 11. FIG. 11 is an enlarged cross-sectional view of a main part of FIG. 11. FIG. 12 is an enlarged cross-sectional view of a main part of another embodiment of an opening / closing device for an opening / closing body according to the present invention.

[0013] (One embodiment of an opening / closing device for an opening / closing body) Hereinafter, one embodiment of an opening / closing device for an opening / closing body according to the present invention will be described with reference to the drawings.

[0014] As shown in Figure 4, a fixed member 1 provided with a charging port or the like for an electric vehicle is provided with an opening 2 for normal charging and an opening 3 for rapid charging. An insertion member 5 such as a power supply gun is inserted into the openings 2 and 3. Furthermore, an opening / closing body 40 such as a lid, which is a component of an opening / closing body opening / closing device 10 of the present invention (hereinafter also simply referred to as "opening / closing device 10"), is attached to the opening 3 so as to be able to open and close.

[0015] The opening / closing device 10 in this embodiment is a device for opening and closing the opening body 40 relative to, for example, the opening (here, the quick charging opening 3) of the fixed member 1. The insertion member 5 is inserted into the openings 2 and 3 to charge a battery (not shown) of the electric vehicle, which serves as a so-called charging gun.

[0016] The fixed member is not limited to a member provided with a charging port of an electric vehicle, but may be any other member.Furthermore, the opening is not limited to an opening for quick charging, but may be any other part.

[0017] As shown in Figures 1, 4 and 5, this opening and closing device 10 comprises a base member 20 fixed to a fixed member 1, an opening and closing body 40 rotatably attached to the base member 20 via a first pivot support part to open and close the opening 3 and provided with an engaged part 58, a locking member 60 rotatably attached to the base member 20 via a second pivot support part and provided with an abutment part 65 against which the insertion member 5 abuts and an engaging part 70 that engages with the engaged part 58 when the opening and closing body is opened relative to the opening 3 to hold the opening and closing body 40 in an open state, and a biasing member 80.

[0018] The urging member 80 has a wound portion 81 formed by winding a metal wire, a first arm portion 83 extending from one end of the wound portion 81, and a second arm portion 85 extending from the other end of the wound portion 81.

[0019] As shown in Figure 5, the fixed member 1 is formed with a storage section 1a for storing and fixing the base member 20 of the opening / closing device 10, etc., and also has an insertion groove 1b that communicates with the opening 3 and allows the locking member 60 of the opening / closing device 10 to be inserted and ejected.

[0020] The first rotation support portion is provided between the base member 20 and the opening / closing body 40. In this embodiment, the first rotation support portion is composed of a pair of support holes 27, 27 provided on the base member 20 side and shaft portions 50, 52 provided on the opening / closing body 40 side. The central axis (axial center) that is the radial center of the support hole 27, passes through the radial centers of the shaft portions 50, 52, and extends along the axial direction is defined as a rotation axis C1 of the first rotation support portion (see FIG. 8).

[0021] On the other hand, the second rotation support portion is provided between the base member 20 and the locking member 60. In this embodiment, the second rotation support portion is composed of a shaft portion 35 provided on the base member 20 side and a support portion 63 provided on the locking member 60 side. Note that the central axis (axial center) that passes through the radial center of the shaft portion 35 and runs along the axial direction, and that is the radial center of the support portion 63, is defined as a rotation axis C2 of the second rotation support portion (see FIG. 8 ).

[0022] Furthermore, the opening / closing body 40 has a first locking portion 54, and the first arm portion 83 is locked to this first locking portion 54, urging the opening / closing body 40 in the direction of closing the opening 3 (see arrow R1).

[0023] The locking member 60 also has a second engaging portion 74, and the second arm portion 85 is engaged with this second engaging portion 74 (see Figure 6), so that the locking member 60 is biased in the direction opposite to the biased direction (direction R1) of the opening / closing body 40 and so that the abutment portion 65 enters into an insertion path F2 (hereinafter simply referred to as the "insertion path F2 of the insertion member 5"; see Figures 9 and 10) along the insertion direction F1 of the insertion member 5 into the opening 3 (see arrow R2).

[0024] Furthermore, as shown in Figures 5 and 7, stopper portions are provided between the base member 20 and the locking member 60, and between the opening / closing body 40 and the locking member 60, to prevent the locking member 60 from coming off the base member 20.

[0025] In this embodiment, a stopper portion is provided between the base member 20 and the locking member 60, and is made up of the inner edge portion 38 of the recessed portion 37 of the base member 20 and the tip portion 75 and flange portion 77 of the protrusion 73 of the locking member 60. In addition, a stopper portion is provided between the opening / closing body 40 and the locking member 60, and is made up of the abutting end portion 57a ​​of the recessed groove 57 of the opening / closing body 40 and the engaging portion 70 of the locking member 60. In other words, this embodiment has two stopper portions.

[0026] Furthermore, as shown in Figure 12, in this opening and closing device 10, when the insertion member 5 is inserted into the openings 2, 3 and the insertion member 5 abuts against the abutment portion 65, the locking member 60 rotates in the opposite direction to the biased direction (direction R1) relative to the base member 20 against the biasing force of the biasing member 80 (the biasing force from the second arm portion 85), thereby entering a disengaged state in which the engagement of the engaging portion 70 with the engaged portion 58 is released.

[0027] Next, the base member 20 will be described in detail.

[0028] In this embodiment, the base member 20 is in the form of a substantially square frame having a bottom wall 21 in the form of a substantially rectangular plate and a pair of side walls 23, 25 extending a predetermined length from a pair of opposing sides of the bottom wall 21. A locking member 60 is disposed between the pair of side walls 23, 25 (see FIG. 7).

[0029] One side wall portion 23 is disposed on the front side of the paper in Fig. 1, and the other side wall portion 25 is disposed on the back side of the paper in Fig. 1. The direction in which the side wall portions 23, 25 extend is referred to as "extension direction X."

[0030] Circular support holes 27 are formed at one end of each side wall 23, 25 in the extension direction X (on the left side of the drawing in FIG. 1). Shafts 50, 52 of the opening / closing body 40 are inserted into the pair of support holes 27, 27, respectively, for rotational support. As a result, the opening / closing body 40 is rotatably attached to the base member 20 (see FIG. 2).

[0031] The direction in which the pair of side wall portions 23, 25 are arranged and the axes of the shaft portions 50, 52 face is referred to as the "axial direction Y." Furthermore, the direction perpendicular to the extension direction X and perpendicular to the axial direction Y is referred to as the "height direction Z." Note that the above-mentioned "extension direction X," "axial direction Y," and "height direction Z" have the same meanings for other members (such as the opening / closing body 40 and the locking member 60) other than the base member 20.

[0032] An extension portion 29 extends from the other end of bottom wall portion 21 in extension direction X (the right side of the paper in FIG. 1 ) and from the center in axial direction Y. A tip end 29 a of this extension portion 29 is removably inserted and fixed into a fixing recess (not shown) formed in accommodating portion 1 a of fixed member 1, so that base member 20 is removably fixed to fixed member 1.

[0033] Furthermore, a guide surface 31 is formed on the end face of the bottom wall 21 on one end side in the extension direction X, and in the range from one end in the axial direction Y (the end on the front side of the paper in FIG. 1) to the middle in the axial direction Y (see FIG. 6). This guide surface 31 has a curved surface shape that fits the outer peripheral surface of the peripheral wall 47 (see FIG. 3) that constitutes the shaft structure 43 of the opening / closing body 40, and serves as a rotation guide for the shaft structure 43 when the opening / closing body 40 rotates.

[0034] As shown in FIG. 1, a notched hole 33 having a substantially rectangular shape is formed at one end of the bottom wall portion 21 in the extension direction X and near the side wall portion 25, and the shaft portion 50 is provided through this notched hole 33.

[0035] The shaft portion 50 has a generally cylindrical shape with its axis parallel to the axial direction Y, and one end in the axial direction Y is connected to one inner surface of the notched hole 33, while the other end in the axial direction Y is connected to the other inner surface of the notched hole 33. In other words, both axial ends of the shaft portion 50 are bridged between both inner surfaces of the notched hole 33. The shaft portion 50 is also arranged so that a predetermined portion (here, roughly the upper half of the shaft portion 50) protrudes from the inner surface of the bottom wall portion 21 (see FIG. 6).

[0036] The shaft portion 50 is supported by a support portion 63 of the locking member 60 , and the locking member 60 is attached to the base member 20 so as to be rotatable relative to the base member 20 .

[0037] 1, a recess 37 is formed on the inner surface of the side wall 25 (the surface facing the side wall 23) at the other end in the extension direction X. The recess 37 is recessed to a predetermined depth from the inner surface toward the outer surface. The tip 75 and flange 77 of the protrusion 73 of the locking member 60 are adapted to rotatably fit into the recess 37.

[0038] Furthermore, an inner edge 38 is formed on one end side of the recess 37 in the extension direction X (which can also be said to be the first rotation support portion side). This inner edge 38 is formed parallel to the height direction Z. Also, an inclined surface 39 is formed on the inner edge 38 from one end in the height direction Z (the lower end of the paper in FIG. 1 ) to the other end in the extension direction X, the height of which gradually decreases.

[0039] As shown in FIG. 7 , the tip 75 and flange 77 of the projection 73 of the locking member 60 abut against the inner edge 38 of the recess 37, thereby preventing the locking member 60 from coming off the base member 20.

[0040] Next, the opening / closing body 40 will be described in detail.

[0041] As shown in Figures 1 and 2, the opening / closing body 40 in this embodiment has a cover body 41 that is approximately in the shape of a long plate extending long in the axial direction Y and has four chamfered corners, an extension portion 42 that extends from the middle of one long side 41a of the cover body 41 in the axial direction Y, and an axis structure portion 43 that is connected to the cover body 41 via the extension portion 42.

[0042] As shown in Figure 1, the shaft structure 43 has a first wall portion 45 extending along the extension direction of the extension portion 42, a second wall portion 46 extending diagonally outward relative to the extension direction of the extension portion 42, a peripheral wall portion 47 connecting the extension direction tip ends of the first wall portion 45 and the second wall portion 46 to each other and having a curved outer circumferential surface, and a side wall portion 48 connecting one end (the front side of the paper in Figure 1) of each wall portion 45, 46, 47 to each other in the axial direction Y.

[0043] A generally cylindrical shaft portion 50 protrudes from the outer surface of the side wall portion 48. The shaft portion 50 is inserted into the support hole 27 of the side wall portion 23 of the base member 20 (see FIG. 2).

[0044] As shown in FIG. 3, the other end of the shaft structure 43 in the axial direction Y is cut out by a notch 49, and a recessed accommodation recess 51 is formed in which the winding portion 81 of the urging member 80 is accommodated and positioned.

[0045] 8, a substantially cylindrical shaft portion 52 protrudes from the bottom surface 51a of the accommodation recess 51 so as to be coaxial with the shaft portion 50. The shaft portion 52 is inserted into a support hole 27 formed on the side wall portion 23 of the base member 20. The shaft portion 52 is inserted into the inside of the winding portion 81 accommodated in the accommodation recess 51, and the winding portion 81 is fitted onto the shaft portion 52.

[0046] 8, the pair of shafts 50, 52 are inserted into the pair of support holes 27, 27 and are rotatably supported, thereby allowing the opening / closing body 40 to be rotatably attached to the base member 20. That is, in this embodiment, the pair of shafts 50, 52 of the opening / closing body 40 and the pair of support holes 27, 27 of the base member 20 form a "first rotation support portion" in the present invention.

[0047] As shown in Figure 3, a first engagement portion 54 having a slit groove shape is formed at a position adjacent to the first wall portion 45 of the peripheral wall portion 47 constituting the shaft structure portion 43, and is cut out from the other end face in the axial direction Y by a predetermined length toward one end side in the axial direction Y.

[0048] When the first arm 83 of the biasing member 80 is inserted into and locked in this first locking portion 54 (see FIGS. 3 and 6), the opening / closing body 40 is biased in the direction of closing the opening 3, as indicated by arrow R1. In other words, the opening / closing body 40 is biased to rotate in the direction R1 by the biasing force from the first arm 83 of the biasing member 80.

[0049] 3, a shallow recessed arm insertion groove 55 is formed at the boundary between the tip of the second wall portion 46 in the extending direction and the other end of the peripheral wall portion 47 in the axial direction Y. The second arm 85 of the biasing member 80 is adapted to be inserted from this arm insertion groove 55 (see FIGS. 3 and 6).

[0050] 3, a recessed groove 57 extending in the circumferential direction from the second wall portion 46 toward the first wall portion 45 is provided on the other end side of the peripheral wall portion 47 in the axial direction Y, closer to one end side of the cutout portion 49 in the axial direction Y, and the recessed groove 57 is provided adjacent to the recessed groove 57. It can also be said that the recessed groove 57 is provided between the recessed groove 57 and the first locking portion 54 in the axial direction Y.

[0051] One circumferential end of the groove 57 (the end farthest from the engaged portion 58) is defined as an abutting end 57a, which is adapted to be abutted against or separated from the engaging portion 70 of the locking member 60 (see FIGS. 5, 10, and 12).

[0052] The engaged portion 58 has a recessed shape, a concave curved surface 58a that is recessed in an arc shape, and protruding apexes 58b, 58c that are provided on both circumferential ends of the concave curved surface 58a. The apex 58b is located on the first locking portion 54 side, and the apex 58c is located on the recessed groove 57 side.

[0053] As shown in Figure 10, the engaging portion 70 of the locking member 60 engages with the concave curved surface 58a of the engaged portion 58, thereby holding the opening / closing body 40 in an open state relative to the opening 3 against the biasing force of the biasing member 80 (the biasing force from the first arm portion 83).

[0054] Note that, from a state in which the opening / closing body 40 is closed relative to the opening 3 of the fixed member 1 as shown in Fig. 5 to a state in which the opening / closing body 40 is open relative to the opening 3 of the fixed member 1 as shown in Fig. 10, the engaging portion 70 of the locking member 60 moves within the recessed groove 57. At this time, the engaging portion 70 moves close to or in sliding contact with the bottom surface of the recessed groove 57.

[0055] 5, when the opening / closing body 40 is closed relative to the opening 3, the engaging portion 70 of the locking member 60 and the abutting end portion 57a ​​of the recessed groove 57 abut against each other. That is, the abutting end portion 57a ​​of the recessed groove 57 of the opening / closing body 40, which is biased to rotate in the R1 direction by the biasing force from the first arm portion 83 of the biasing member 80, and the engaging portion 70 of the locking member 60, which is biased to rotate in the R2 direction by the biasing force from the second arm portion 85 of the biasing member 80, abut against each other while pressing against each other.

[0056] Next, the locking member 60 will be described in detail.

[0057] As shown in Figures 1 and 5 to 7, the locking member 60 in this embodiment has a base 61 in the shape of a rectangular prism block extending a predetermined length, a support portion 63 provided on one end side of the base 61 in the extension direction, and a contact portion 65 provided on the other end side of the base 61 in the extension direction.

[0058] The support portion 63 has a pair of flexible clamping claws 67, 67 separated by a notch 66. The pair of clamping claws 67, 67 have an outer periphery that expands in diameter in a generally arc-like shape, and an inner periphery that is an arc-shaped curved surface. In addition, a slit 68 is formed in the base portion 61 from midway along the extension direction toward the support portion 63, making both side edges of the slit 68 flexible and thus the pair of clamping claws 67, 67 flexible.

[0059] Then, the pair of clamping claws 67, 67 are pressed against the shaft portion 35 of the base member 20 from the cutout 66 side, and the pair of clamping claws 67, 67 are flexibly deformed while clamping the shaft portion 35, whereby the locking member 60 is attached to the base member 20 in a rotatable manner and in a retained state so as to be prevented from coming off, as shown in FIG. 5.

[0060] That is, in this embodiment, the shaft portion 35 of the base member 20 and the pair of clamping claws 67, 67 of the support portion 63 of the locking member 60 form a "second rotation support portion" in the present invention.

[0061] Furthermore, a convex engaging portion 70 protrudes from the front surface 61a (the surface facing the opening / closing body 40) of the base 61, at a position close to the support portion 63. The engaging portion 70 is a generally semicircular convex portion with a curved outer periphery so as to fit the concave curved surface 58a of the engaged portion 58.

[0062] As shown in Figure 10, the engaging portion 70, which is a convex portion, engages with the concave curved surface 58a of the engaged portion 58 of the opening / closing body 40 (this can also be said to be a concave-convex fit), thereby maintaining the opening / closing body 40 in an open state relative to the opening 3 against the biasing force of the biasing member 80 (the biasing force from the first arm portion 83).

[0063] The abutment portion 65 is bent at a predetermined angle relative to the extension direction of the base 61 at the other end of the base 61 in the extension direction (here, the abutment portion 65 is bent to form a substantially V-shape relative to the base 61). The surface of the abutment portion 65 facing the opening / closing body 40 forms an abutment surface 65a.

[0064] Then, when the tip of the insertion member 5 abuts against the abutment surface 65a of the abutment portion 65 and the abutment portion 65 is pressed, the locking member 60 rotates in the opposite direction to the R2 direction, which is the biased direction, against the biasing force of the biasing member 80 (the biasing force from the second arm portion 85), and the engaging portion 70, which is the convex portion, comes out of the concave curved surface 58a of the engaged portion 58, and the engagement between the engaged portion 58 and the engaging portion 70 is released.

[0065] Furthermore, as shown in Figure 5, when the opening / closing body 40 is closed relative to the opening 3, the abutting end portion 57a ​​of the groove 57 of the opening / closing body 40, which is urged to rotate in the R1 direction by the urging force from the first arm portion 83 of the urging member 80, and the engaging portion 70 of the locking member 60, which is urged to rotate in the R2 direction by the urging force from the second arm portion 85 of the urging member 80, come into contact and press against each other, thereby preventing the locking member 60 from coming off the base member 20.

[0066] That is, the abutting end portion 57 a of the recessed groove 57 of the opening / closing body 40 and the engaging portion 70 of the locking member 60 form one stopper portion provided between the opening / closing body 40 and the locking member 60 .

[0067] As shown in FIG. 1, a protrusion 73 is formed from the abutment portion 65 of the locking member 60, protruding toward one side wall portion 25 of the base member 20, and the base end of the protrusion 73 in the protruding direction forms a second locking portion (the protrusion 73 protrudes from the abutment portion 65 via a protruding piece 72).

[0068] Specifically, a protruding piece 72 protrudes (or overhangs) from the other end edge of the abutting portion 65 in the axial direction Y on the back side opposite the abutting surface 65a of the abutting portion 65 so as to form a generally triangular plate together with the abutting portion 65. Furthermore, a projection 73 protrudes from the outer surface of the tip end (the end separated from the abutting surface 65a) in the protruding direction of the protruding piece 72, in parallel with the rotation axis C2 of the second rotation support portion, and toward the side wall portion 25 of the base member 20.

[0069] The base end of the projection 73 in the projecting direction forms a second locking portion 74. As shown in Figures 2, 5 and 6, a second arm portion 85 of the biasing member 80 is locked to this second locking portion 74.

[0070] As a result, as shown by arrow R2, the locking member 60 is biased in the direction opposite to the direction (R1 direction) in which the opening / closing body 40, which is engaged and biased by the first arm portion 83 of the biasing member 80, is biased, and so that the abutting portion 65 enters the insertion path F2 of the insertion member 5. In other words, the locking member 60 is biased to rotate in the R2 direction by the biasing force from the second arm portion 85 of the biasing member 80.

[0071] In addition, a flange portion 77 is provided from the tip portion 75 of the protrusion 73 in the protruding direction so as to extend between the side wall portion 25 of the base member 20 and the second arm portion 85 of the urging member 80 (see Figures 2 and 7).

[0072] That is, a plate-shaped flange portion 77 projects from the outer peripheral edge of the tip portion 75 of the projection 73 on the support portion 63 side, parallel to the extending direction of the base portion 61 and toward the support portion 63 side.

[0073] The flange portion 77, together with the tip portion 75 of the projection 73, fits into the recess 37 formed in the side wall portion 25 of the base member 20, and rotates within the recess 37 when the locking member 60 rotates relative to the base member 20. In other words, it serves as a rotation guide for the locking member 60.

[0074] Furthermore, when the opening / closing body 40 is closed relative to the opening 3 as shown in Figure 5 or when the opening / closing body 40 is open relative to the opening 3 as shown in Figure 10, the tip 75 and flange 77 of the protrusion 73 of the locking member 60 abut against the inner edge 38 of the recess 37 formed in the side wall 25 of the base member 20, thereby preventing the locking member 60 from coming off the base member 20.

[0075] That is, the inner edge 38 of the recess 37 of the base member 20 and the tip 75 and flange 77 of the protrusion 73 of the locking member 60 form another stopper portion provided between the base member 20 and the locking member 60.

[0076] As shown in FIG. 8, the rotation axis C1 of the opening / closing body 40 and the rotation axis C2 of the locking member 60 are arranged parallel to each other, and the winding portion 81 of the urging member 80 and the locking member 60 are arranged to overlap in a direction perpendicular to the rotation axis C1 of the opening / closing body 40 and the rotation axis C2 of the locking member 60.

[0077] That is, as shown in FIG. 8, when a line segment along a direction perpendicular to the rotation axis C1 of the opening / closing body 40 and the rotation axis C2 of the locking member 60 is defined as "L", the winding portion 81 and the locking member 60 are arranged to overlap (wrap) so as to pass through this line segment L.

[0078] (Modifications) The shapes, structures, layouts, etc. of the base member, opening / closing body, locking member, etc. that constitute the opening / closing device for an opening / closing body in the present invention are not limited to the above-described embodiments.

[0079] For example, the base member may have an overall shape such as a box or a cylindrical shape with a bottom. The lid of the opening / closing body may be a circular plate or an elliptical plate. Furthermore, a shaft structure may be provided on the inner surface of the lid (the surface facing the opening). The locking member may have a cylindrical, cylindrical, prismatic, or rectangular cylindrical shape, as long as it has at least a contact portion.

[0080] The first pivot support portion may be provided by providing a shaft on the base member side and a support hole on the opening / closing body side that pivotally supports the shaft, or by providing support holes on both the base member and the opening / closing body and inserting separate shafts into these support holes. Also, the second pivot support portion may be provided by providing a shaft on the locking member side and a bearing on the base member side.

[0081] Furthermore, the stopper portion may be provided only between the base member and the locking member or between the opening / closing body and the locking member. An embodiment in which the stopper portion is provided only between the base member and the locking member will be described later.

[0082] Furthermore, the engaged portion may be a convex portion and the engaging portion may be a concave portion, or both the engaged portion and the engaging portion may be projections that engage with each other.

[0083] (Operation and Effect) Next, the operation and effect of the opening and closing device 10 having the above-described structure will be described.

[0084] 4 and 5 , with the opening 3 of the fixed member 1 closed by the opening / closing body 40, the other long side 41b of the lid body 41 is grasped and the opening / closing body 40 is rotated in the direction to open the opening 3 against the biasing force of the biasing member 80 (the biasing force applied by the first arm portion 83). Then, the engaging portion 70 of the locking member 60 moves within the recessed groove 57 of the opening / closing body 40, while the shaft structure portion 43 of the opening / closing body 40 rotates.

[0085] Then, when the engaging portion 70 climbs over the top 58c of the engaged portion 58, the engaging portion 70 is pressed against the top 58c, and the locking member 60, which is biased in the R2 direction by the biasing force from the second arm portion 85 of the biasing member 80, rotates slightly in the direction opposite to the R2 direction against the biasing force from the second arm portion 85.

[0086] Thereafter, when the engaging portion 70 overcomes the apex 58c, the engaging portion 70 enters into the concave curved surface 58a of the engaged portion 58 and engages (convex-concave fit), and the locking member 60 rotates in the R2 direction due to the biasing force from the second arm 85 of the biasing member 80, and as shown in Figures 9 and 10, the opening / closing body 40 is held in an open state relative to the opening 3 against the biasing force from the first arm 83 of the biasing member 80.

[0087] Next, the insert member 5 is inserted into the openings 2 and 3 of the member to be fixed 1 in the inserting direction F1 until the insert member 5 is inserted into the openings 2 and 3 to a predetermined depth as shown in FIGS.

[0088] Then, the tip of the insertion member 5 comes into contact with and is pressed against the contact surface 65a of the contact portion 65 of the locking member 60, causing the locking member 60 to rotate in the direction opposite to the direction R2 against the biasing force from the second arm portion 85 of the biasing member 80. As a result, the contact portion 65 is released from the insertion path F2 of the insertion member 5.

[0089] Then, the engaging portion 70 of the locking member 60 comes out of the concave curved surface 58a of the engaged portion 58 of the opening / closing body 40, and the engagement between the engaged portion 58 and the engaging portion 70 is released, so that the opening / closing body 40 rotates in the R1 direction due to the biasing force from the first arm portion 83 of the biasing member 80.

[0090] 11 and 12, the portion of the other long side 41b of the cover 41 of the opening / closing body 40 abuts against the outer peripheral surface of the insertion member 5 while being subjected to the biasing force from the first arm 83 of the biasing member 80. This keeps the opening / closing body 40 in a half-open state.

[0091] Furthermore, the tip of the contact surface 65a of the contact portion 65 contacts the outer peripheral surface of the insertion member 5, restricting the lock member 60 from rotating in the R2 direction.

[0092] Then, when a predetermined process or operation, such as a charging process using the plug-in member 5, is completed, the plug-in member 5 is pulled out from the openings 2, 3 of the fixed member 1.

[0093] Then, the opening / closing body 40, to which a biasing force is applied from the first arm 83 of the biasing member 80 via the first engaging portion 54, rotates in the R1 direction, closing the opening 3 again, and the locking member 60, to which a biasing force is applied from the second arm 85 of the biasing member 80 via the second engaging portion 74, rotates in the R2 direction, and its abutment portion 65 again penetrates into the insertion path F2 of the insertion member 5, returning to the state shown in Figures 4 and 5.

[0094] At this time, as shown in Figure 5, the engaging portion 70 of the locking member 60 abuts against the abutting end portion 57a ​​of the groove 57 of the opening / closing body 40, and as shown in Figure 7, the tip portion 75 and flange portion 77 of the protrusion 73 of the locking member 60 abut against the inner edge portion 38 of the recess 37 of the base member 20, thereby restricting further rotation of the locking member 60 in the R2 direction (the rotation stopper functions) and preventing the locking member 60 from coming off the base member 20 (the anti-slip stopper functions).

[0095] In this opening / closing device 10, the first arm 83 of the biasing member 80 is engaged with the first locking portion 54 of the opening / closing body 40, thereby biasing the opening / closing body 40 in the R1 direction, which is the direction in which the opening / closing body 40 closes the opening 3, and the second arm 85 of the biasing member 80 is engaged with the second locking portion 74 of the locking member 60, thereby biasing the locking member 60 in the R2 direction, which is the opposite direction to R1, which is the direction in which the opening / closing body 40 is biased, and so that the abutment portion 65 enters the insertion path F2 of the insertion member 5.

[0096] In other words, one biasing member 80 can bias two components, the opening / closing body 40 and the locking member 60, simultaneously, thereby reducing the number of components of the opening / closing device 10 and simplifying the structure of the opening / closing device 10.

[0097] In addition, in this embodiment, as shown in FIG. 8, the rotation axis C1 of the opening / closing body 40 and the rotation axis C2 of the locking member 60 are arranged parallel to each other, and the wound portion 81 of the biasing member 80 and the locking member 60 are arranged to overlap in a direction perpendicular to the rotation axis C1 of the opening / closing body 40 and the rotation axis C2 of the locking member 60.

[0098] According to the above aspect, the wound portion 81 of the urging member 80 and the locking member 60 are arranged to overlap in a direction perpendicular to the rotation axis C1 of the opening / closing body 40 and the rotation axis C2 of the locking member 60, so that the opening / closing device 10 can have a compact structure while stably applying the urging force from the second arm portion 85 of the urging member 80 to the locking member 60.

[0099] Furthermore, in this embodiment, a pair of side wall portions 23, 25 are provided on the base member 20, a locking member 60 is disposed between the pair of side wall portions 23, 25, a first rotation support portion (a pair of support holes 27, 27 and a pair of shaft portions 50, 52) is provided on the side wall portions 23, 25 and the locking member 60, the biasing member 80 is disposed offset toward one of the side wall portions 25, a protrusion 73 is formed from the abutment portion 65 of the locking member 60 and protrudes toward one of the side wall portions 25, and the base end of the protrusion 73 in the protruding direction forms a second engaging portion 74 (see Figures 2, 7, 8, etc.).

[0100] According to the above aspect, the protrusion 73 is formed from the abutment portion 65 of the locking member 60, protruding toward one of the side wall portions 25 and having a base end in the protruding direction that forms the second engaging portion 74. Therefore, when attaching the locking member 60 to the base member 20, the second arm portion 85 of the biasing member 80 can be easily engaged with the second engaging portion 74 at the base end of the protrusion 73, thereby improving the ease of attachment (assembly) of the locking member 60 to the base member 20.

[0101] In addition, in this embodiment, a recess 37 into which the protrusion of the locking member 60 fits is formed on the inner surface of one of the side wall portions 25 of the base member 20, and a tip end 75 of the protrusion 73 in the protruding direction abuts against an inner edge portion 38 on the first rotation support portion side of the recess 37, thereby preventing the locking member 60 from slipping out of the base member 20, and the inner edge portion 38 and the tip end 75 of the protrusion 73 form a stopper portion (see Figures 2 and 7, etc.).

[0102] According to the above aspect, the inner edge 38 on the first pivot support side of the recess 37 on the base member 20 side and the tip 75 of the protrusion 73 of the locking member 60 form a stopper portion, so that while a stopper portion of the locking member 60 is provided, the stopper portion wraps in the thickness direction of the side wall portion 25, thereby making it possible to further compactify the opening and closing device 10.

[0103] Furthermore, in this embodiment, a flange portion 77 is provided from the tip portion 75 of the protrusion 73 in the protruding direction, protruding so as to be positioned between one side wall portion 25 and the second arm portion 85 of the urging member 80 (see Figures 2 and 7).

[0104] According to the above aspect, the flange portion 77 having the above configuration can prevent the second arm portion 85 of the biasing member 80 from contacting one of the side wall portions 25, so that the biasing force from the second arm portion 85 of the biasing member 80 can be stably applied to the locking member 60.

[0105] In other words, the biasing force from the second arm portion 85 of the biasing member 80 can be reliably applied only to the second engaging portion 74 of the locking member 60 without being dispersed toward the base member 20 side, so that the biasing force can be stably applied to the locking member 60.

[0106] In this embodiment, as shown in FIG. 5, stopper portions are provided at two locations, one between the base member 20 and the locking member 60 and the other between the opening / closing body 40 and the locking member 60, to prevent the locking member 60 from coming off the base member 20.

[0107] That is, in this embodiment, a first stopper portion is provided between the base member 20 and the locking member 60, and the first stopper portion is made up of the inner edge portion 38 of the recess 37 of the base member 20 and the tip portion 75 and flange portion 77 of the protrusion 73 of the locking member 60, and a second stopper portion is provided between the opening / closing body 40 and the locking member 60, and the second stopper portion is made up of the abutment end portion 57a ​​of the recess groove 57 of the opening / closing body 40 and the engaging portion 70 of the locking member 60, and thus two stopper portions are provided.

[0108] In this embodiment, since there are two stopper portions, the locking member 60 can be more reliably held against removal from the base member 20 .

[0109] (Another embodiment of the opening / closing device for an opening / closing body) Figure 13 shows another embodiment of the opening / closing device for an opening / closing body according to the present invention. Note that parts that are essentially the same as those in the above embodiment are given the same reference numerals, and their description will be omitted. The opening / closing device 10A for an opening / closing body in this embodiment (hereinafter also simply referred to as "opening / closing device 10A") differs from the above embodiment in the structure of the stopper portion.

[0110] That is, as shown in Figure 13, a protruding stopper protrusion 36 is provided on the other end edge in the height direction Z of the inner surface of the side wall portion 25 of the base member 20, between the axis C1' of the opening / closing body 40 and the axis C2' of the locking member 60.

[0111] The stopper projection 36 has a tapered tip surface 36a facing the opening / closing body 40, so that it does not interfere with the peripheral wall 47 of the shaft structure 43 when the opening / closing body 40 rotates. In addition, the base end surface 36b of the stopper projection 36 opposite the tip surface 36a is a vertical surface along the height direction Z.

[0112] The front surface 61a of the base 61 of the locking member 60, which is urged to rotate by the second arm 85 of the urging member 80, abuts against the base end surface 36b of the stopper protrusion 36, thereby restricting the rotation of the locking member 60 and preventing the locking member 60 from coming off the base member 20 (functioning as a stopper to prevent it coming off).

[0113] It should be noted that the present invention is not limited to the above-described embodiment, and various modified embodiments are possible within the scope of the gist of the present invention, and such embodiments are also included in the scope of the present invention.

[0114] DESCRIPTION OF SYMBOLS 1 Fixed member 3 Opening 5 Insertion member 10, 10A Opening / closing device for opening / closing body (opening / closing device) 20 Base member 25 Side wall 27 Support hole 35 Shaft 37 Recess 38 Inner edge 40 Opening / closing body 50, 52 Shaft 54 ​​First locking portion 58 Engaged portion 60 Locking member 65 Contact portion 70 Engaging portion 73 Protrusion 74 Second locking portion 80 Urging member 81 Winding portion 83 First arm 85 Second arm

Claims

1. An opening / closing device for an opening / closing body that opens and closes an opening of a fixed member having an opening into which an insertion member is inserted, comprising: a base member fixed to the fixed member; an opening / closing body that is rotatably attached to the base member via a first pivot support portion to open and close the opening, and has an engaged portion; a locking member that is rotatably attached to the base member via a second pivot support portion and has an abutment portion with which the insertion member abuts, and an engagement portion that engages with the engaged portion to hold the opening / closing body in an open state when the opening / closing body is opened relative to the opening; and a biasing member that has a winding portion, a first arm portion extending from one end of the winding portion, and a second arm portion extending from the other end of the winding portion, the opening / closing body having a first locking portion, and the first arm portion is locked to the first locking portion to bias the opening / closing body in a direction to close relative to the opening, an opening / closing device for an opening / closing body, characterized in that the locking member has a second engaging portion, and the second arm portion is engaged with the second engaging portion, and the locking member is biased in a direction opposite to the direction in which the opening / closing body is biased and such that the abutment portion enters an insertion path along the insertion direction of the insertion member into the opening; a stopper portion is provided between the base member and the locking member and / or between the opening / closing body and the locking member to prevent the locking member from coming off the base member; and when the insertion member is inserted into the opening and abuts against the abutment portion, the locking member rotates in the direction opposite to the biased direction against the biasing force of the biasing member, and the device is in a disengaged state in which the engagement portion is released from engagement with the engaged portion.

2. An opening / closing device for an opening / closing body as described in claim 1, wherein the rotation axis of the opening / closing body and the rotation axis of the locking member are arranged parallel to each other, and the wound portion of the biasing member and the locking member are arranged to overlap in a direction perpendicular to the rotation axis of the opening / closing body and the rotation axis of the locking member.

3. An opening / closing device for an opening / closing body as described in claim 1 or 2, wherein a pair of side wall portions is provided on the base member, and the locking member is disposed between the pair of side wall portions, the pair of side wall portions and the opening / closing body are provided with the first pivot support portion, the biasing member is disposed offset towards one of the side wall portions, a protrusion is formed from the abutment portion of the locking member which protrudes towards one of the side wall portions, and the base end of the protrusion in the protruding direction forms the second engaging portion.

4. An opening / closing device for an opening / closing body as described in claim 3, wherein a recess is formed on the inner surface of one of the side walls of the base member into which the protrusion of the locking member fits, and the tip of the protrusion in the protruding direction abuts against the inner edge of the recess on the first pivot support portion side to prevent the locking member from slipping out of the base member, and the inner edge and the tip of the protrusion form the stopper portion.

5. An opening / closing device for an opening / closing body as described in claim 3, wherein a flange portion is provided extending from the tip of said projection in the protruding direction so as to be positioned between one of said side wall portions and said second arm portion of said biasing member.

Images