Locking device for opening / closing body

Abstract

The present invention provides a locking device for an opening / closing body that can suppress impact noise when restricting the rotation of a rotating body. The locking device (10) includes: a locking portion; a base (11); a rotating body (60) having a protruding portion on a part of its outer periphery; a locking member; and an elastic member (90) having a base portion (91) and a stopper portion (92). The base portion (91) is engaged with and supported by a supporting portion (51), and the stopper portion (92) abuts against the protruding portion (72) of the rotating body (60) to restrict the maximum rotational position of the rotating body (60) in a specified direction. The stopper portion (92) is arranged to be biased in a direction opposite to the specified direction with respect to the base portion (91), and a sliding contact portion (76) that slidably contacts the elastic member (90) during the approach of the protruding portion (72) to the stopper portion (92) is provided on a part of the outer periphery of the rotating body (60).

Description

Technical Field

[0001] The present invention relates to a locking device for an opening / closing body, which is used to lock an opening / closing body that is assembled to an opening of a fixed body in an openable / closable manner in a closed state. Background Art

[0002] For example, an opening / closing body such as a lid is assembled to an opening of a fixed body such as a glove box of an automobile in an openable / closable manner. And, a locking device is provided between the opening and the opening / closing body, which can lock when the opening / closing body is closed and can unlock when the opening / closing body is opened.

[0003] For example, Patent Document 1 below describes a lid locking device having: a housing; a locking member; a motor for driving the locking member; a worm and a worm wheel; a wheel side wall provided at an outer edge portion of the worm wheel; a rotation restricting wall extending inward from the wheel side wall; a stopper projection protruding from an inner surface of the housing and abutting against the rotation restricting wall to restrict the rotation range of the worm wheel; and a buffer portion (buffer rubber) provided at the stopper projection and abutting against the rotation restricting wall to elastically deform.

[0004] In addition, the buffer rubber has a structure in which its outer edge shape is substantially quadrilateral and fitting holes and buffer holes are provided side by side. The buffer rubber is fitted by inserting a first rotation restricting projection protruding from the inner surface of the housing into the fitting holes.

[0005] And, when the lid opening switch is turned on to open the lid during fuel supply or the like, the motor rotates, the worm wheel rotates backward, and rotates from the forward rotation limit position (refer to Figure 11 ) to the backward rotation limit position (refer to Figure 12 ) of Patent Document 1. At this time, the rotation restricting wall of the worm wheel abuts against the curved side surface on the buffer hole side of the buffer rubber, and the buffer rubber flexes and deforms in a manner that the buffer holes are flattened (refer to Figure 12 ) of Patent Document 1, whereby shock absorption is performed and rotation restriction is performed.

[0006] Prior Art Documents

[0007] Patent Documents

[0008] Patent Document 1: Japanese Patent No. 5940508 Gazette Summary of the Invention

[0009] Problems to be Solved by the Invention

[0010] In the lid locking device of Patent Document 1 above, when the worm wheel rotates, its rotation restricting wall only abuts against the curved side surface on the buffer hole side of the buffer rubber. Therefore, it cannot be said that the shock absorption performance is sufficient, and it is difficult to suppress the impact sound.

[0011] Accordingly, an object of the present invention is to provide a locking device for an opening / closing body that can suppress impact sounds when rotation of a rotating body is restricted during rotation.

[0012] Solution to the Problem

[0013] To achieve the above object, the present invention is a locking device for an opening / closing body that is assembled to an opening of a fixed body in an openable / closable manner. The locking device for the opening / closing body is characterized by including: a locking portion provided on one of the fixed body or the opening / closing body; a base disposed on the other of the fixed body or the opening / closing body; a rotating body rotatably accommodated or placed on the base, having a protrusion on a part of its outer periphery; a locking member that slides in linkage with the rotation of the rotating body and engages with / detaches from the locking portion; and an elastic member having a base portion and a stopper portion. The base portion is engaged with a support portion provided on the base and is supported, and the stopper portion abuts against the protrusion of the rotating body to limit the maximum rotational position of the rotating body in a specified direction. The stopper portion of the elastic member is disposed to be biased in a direction opposite to the specified direction with respect to the base portion, and a sliding contact portion that slidably contacts the elastic member is provided on a part of the outer periphery of the rotating body during the approach of the protrusion to the stopper portion.

[0014] Advantageous Effects of the Invention

[0015] According to the present invention, when the rotating body rotates in a specified direction, that is, when the rotating body rotates in a direction approaching the stopper portion of the elastic body, the sliding contact portion of the rotating body slidably contacts the elastic member, attenuating the rotational speed of the rotating body, and the protrusion of the rotating body collides with the stopper portion, thereby stopping the rotation of the rotating body. At this time, since the stopper portion of the elastic member is disposed to be biased in a direction opposite to the specified direction of the rotating body with respect to the base portion, the rotation of the rotating body can be stopped with buffering, and in cooperation with the rotational speed attenuation effect of the sliding contact portion, impact sounds can be effectively reduced. Description of the Drawings

[0016] Figure 1 An embodiment of the locking device for the opening / closing body of the present invention is shown. Figure 1 (A) thereof is a perspective view of the state where the opening / closing body is closed. Figure 1 (B) thereof is a perspective view of the state where the opening / closing body is open.

[0017] Figure 2 is an exploded perspective view of the locking device.

[0018] Figure 3 is a top view of the locking device.

[0019] Figure 4(A) is a perspective view of the state in which the second housing is removed from the locking device, Figure 4 (B) is a perspective view of the locking device.

[0020] Figure 5 is a top view of the first housing that constitutes the base in the locking device.

[0021] Figure 6 is a perspective view of the rotating body that constitutes the locking device.

[0022] Figure 7 shows the elastic member that constitutes the locking device, Figure 7 (A) of it is a perspective view, Figure 7 (B) of it is a top view.

[0023] Figure 8 is a top view showing a modified example of the elastic member that constitutes the locking device.

[0024] Figure 9 is a top view showing the relationship between the first housing that constitutes the base and the rotating body in the locking device.

[0025] Figure 10 is a top view of the state in which the second housing and the like are removed from the locking device.

[0026] Figure 11 shows the relationship between the second housing that constitutes the base and the elastic member in the locking device, Figure 11 (A) of it is a front view of the state in which the elastic member is not supported by the support portion, Figure 11 (B) of it is a front view of the state in which the elastic member is supported by the support portion.

[0027] Figure 12 is an explanatory view showing the function and effect of the locking device and a top explanatory view of the state in which the rotating body does not rotate.

[0028] Figure 13 is from Figure 12 shown state, a top explanatory view of the state in which the rotating body rotates.

[0029] Figure 14 is from Figure 13 shown state, a top explanatory view of the state in which the rotating body further rotates.

[0030] Figure 15 is from Figure 14 shown state, a top explanatory view of the state in which the rotating body further rotates and its rotation position is restricted.

[0031] Figure 16 is Figure 4 A cross-sectional view taken along the line B - B of (B).

[0032] Figure 17 is Figure 3 a sectional view taken along the line of arrow A - A towards the line of sight.

[0033] Figure 18 is Figure 3 a sectional view taken along the line of arrow D - D towards the line of sight.

[0034] Figure 19 is an explanatory view of the state in which the opening / closing body is closed by the locking device.

[0035] Figure 20 is an explanatory view of the state in which the opening / closing body is opened by the locking device.

[0036] Figure 21 is a top view showing another embodiment of the locking device for the opening / closing body of the present invention.

[0037] Figure 22 is a top view of the base constituting the locking device.

[0038] Figure 23 is a front view of the locking device.

[0039] Figure 24 is Figure 21 a sectional view taken along the line of arrow E - E towards the line of sight. Detailed Embodiment

[0040] (An Embodiment of the Locking Device for the Opening / Closing Body)

[0041] Hereinafter, with reference to the drawings, an embodiment of the locking device for the opening / closing body of the present invention will be described.

[0042] As Figure 19 , Figure 20 shown, the locking device 10 for the opening / closing body in the present embodiment (hereinafter, also simply referred to as "locking device 10") is, for example, a device for locking an opening / closing body 5 such as a glove box in a closed state, which is detachably attached to an opening 2 of a fixed body 1 such as an instrument panel of a vehicle. In particular, the locking device 10 of the present embodiment is a device that can electrically open the opening / closing body 5 locked in a closed state with respect to the opening 2 of the fixed body 1 by a motor 13 or the like. However, as the locking device for the opening / closing body, not only a configuration that electrically opens the opening / closing body but also a configuration that mechanically opens the opening / closing body by the operator's manual force can be applied (this will be described in a later embodiment).

[0043] Simultaneously referring to Figures 1 - 3, the locking device 10 of the present embodiment includes: a pair of locking portions 3, 3 provided at the opening 2 of the fixed body 1; a shell-shaped base 11 disposed on the opening / closing body 5; a rotating body 60 rotatably received or placed on the base 11; a pair of locking members 80, 81 that slide in association with the rotation of the rotating body 60 and engage with / detach from the locking portions 3, 3; and an elastic member 90 having a base portion 91 and a stopper portion 92.

[0044] It should be noted that, as the locking device of the opening / closing body, as described above, for example, it can be applied to a structure in which a box-shaped glove box is rotatably assembled at the opening of the instrument panel (in this case, the instrument panel constitutes the "fixed body" and the glove box constitutes the "opening / closing body"), or to a structure in which a lid is openably / closably assembled at the opening of the instrument panel (in this case, the instrument panel constitutes the "fixed body" and the lid constitutes the "opening / closing body"), and can be widely used for various opening / closing bodies that open / close the opening of the fixed body.

[0045] In addition, as Figure 19 , Figure 20 shown, in the present embodiment, a pair of hole-shaped locking portions 3, 3 are provided on both sides in the width direction of the opening 2 of the fixed body 1. It should be noted that the locking portion may not be hole-shaped, but may also be concave, protrusion-shaped, frame-shaped, etc. In addition, the locking portion may be provided on the opening / closing body instead of the fixed body, and there is no particular limitation.

[0046] In addition, the locking device 10 has: a torsion spring 12 as a biasing unit that biases the rotating body 60 to rotate; and a motor 13 that rotates the rotating body 60 in a direction opposite to the rotation biasing direction of the torsion spring 12 via a worm 14.

[0047] It should be noted that, in the present embodiment, Figure 10 , Figure 12 , Figure 19 the direction indicated by the arrow F1 is the rotation biasing direction of the torsion spring 12 as the biasing unit to the rotating body 60.

[0048] In addition, as Figure 1 (A) shown, a switch 7 (a touch switch, a push-button type, a lever type, etc.) for operating the motor 13 is disposed at a predetermined position on the surface side of the opening / closing body 5.

[0049] The torsion spring 12 is composed of a winding portion 12a wound from a wire, a first wrist portion 12b protruding inward from one circumferential end of the winding portion 12a, and a second wrist portion 12c protruding inward from the other circumferential end of the winding portion 12a.

[0050] On the other hand, the motor 13 is electrically connected to a power connector (not shown) via a pair of bus bars 17, 17, and the rotary shaft 13a of the motor 13 is rotated by the operation of the switch 7.

[0051] As Figure 1 shown in (B) of

[0052] each of the locking members 80, 81 is in the shape of a rod having a bent portion in the middle of the axial direction, engaging portions 82 are provided at the axial top ends thereof, and tapered surfaces are provided at the engaging portions 82, and the engaging portions 82, 82 are engaged with / disengaged from the pair of locking portions 3, 3. It should be noted that the above-described engaging portions 82 may be provided in the middle of the axial direction instead of the top ends of the locking members 80, 81.

[0053] Moreover, in the present embodiment, the locking members 80, 81 are slidably disposed on the opening / closing body 5, and the locking portions 3 are formed on the opening portion 2 side of the fixed body 1, but conversely, the locking members may be slidably disposed on the fixed body side, and the locking portions may be provided on the opening / closing body side. Figure 19

[0053]

[0054] Next, the base 11 will be described in detail.

[0055] The base 11 is a housing that houses the rotating body 60, the elastic member 90, and the motor 13 therein. The base 11 of the present embodiment is composed of a first housing 20 and a second housing 40 attached to the first housing 20.

[0056] As Figure 2 shown, the first housing 20 is composed of a bottom wall 21 and a peripheral wall 22 erected from the periphery thereof, and has a bottomed frame shape that is open on the side (upper side) facing the second housing 40.

[0057] If Figure 5 is also referred to, the first housing 20 has: a motor mounting portion 23 for mounting the motor 13; and a gear mounting portion 24 that is provided adjacent to the side of the rotary shaft 13a (refer to Figure 10 ) of the motor 13 in the motor mounting portion 23 and is for mounting the worm 14 and the rotating body 60. In addition, a connector insertion portion 25 for inserting a power connector (not shown) is provided on one side portion of the motor mounting portion 23 of the first housing 20, and the power connector supplies power to the motor 13. In addition, a portion of the peripheral wall 22 on the gear mounting portion 24 side and on the side opposite to the worm 14 mounting portion is curved.

[0058] Moreover, as Figure 2 andFigure 5 As shown, an elastic member mounting recess 27 is formed in a circumferential direction specified range of a curved surface portion on the circumferential wall 22 on the side of the gear arrangement portion 24 and on the side opposite to the mounting portion of the worm 14. The elastic member mounting recess 27 is formed in a groove shape with a specified depth from the upper end portion (the end portion on the opposed surface side of the second housing 40). A part of the elastic member 90 is received and mounted in the elastic member mounting recess 27. In addition, as Figure 10 shown, a peripheral edge portion of a circumferential direction one end portion of the circumferential wall on the side of the gear arrangement portion 24 and the elastic member mounting recess 27 constitutes a wall portion 22a disposed at a position opposed to the outer periphery of the rotating body 60.

[0059] Moreover, as Figure 2 shown, a rib-shaped inner side wall portion 28 is protrudingly provided from an end portion on the opposed surface side of the circumferential wall 22 of the first housing 20 with respect to the second housing 40. The inner side wall portion 28 surrounds the peripheral edge portion of the gear arrangement portion 24 except for the elastic member mounting recess 27 and the peripheral edge portion of the motor mounting portion 23 except for the connector insertion portion 25. Moreover, a plurality of engaging protrusions 29 for mounting with the second housing 40 are protrudingly provided at specified portions on the outer periphery of the circumferential wall 22.

[0060] In addition, a pair of fitting flanges 30, 30 respectively protrude from specified portions of an end portion on the opposed surface side of the circumferential wall 22 with respect to the second housing 40. A circular hole 30a is formed in one fitting flange 30, and a long hole 30b is formed in the other fitting flange 30. Moreover, a plurality of fitting holes 30c for fitting with the opening / closing body 5 are formed in the two fitting flanges 30, 30.

[0061] In addition, a substantially cylindrical support shaft 32 for rotatably supporting the rotating body 60 protrudes from the bottom wall 21 on the side of the gear arrangement portion 24. One convex portion 33 protrudes from the outer periphery of the tip portion in the protruding direction of the support shaft 32 (refer to Figure 3 ). Moreover, a substantially C-shaped spring locking wall portion 34 protrudes from the outer periphery of the support shaft 32 of the bottom wall 21. The spring locking wall portion 34 is formed with a spring locking groove 34a in a notch groove shape at one place in the circumferential direction. The first arm portion 12b of the torsion spring 12 is locked in the spring locking groove 34a of the spring locking wall portion 34 (refer to Figure 9 ). In addition, an annular spring holding wall portion 35 protrudes from the outer periphery of the spring locking wall portion 34 of the bottom wall 21. As Figure 9 shown, the winding portion 12a of the torsion spring 12 is disposed and held inside the spring holding wall portion 35.

[0062] On the other hand, the second housing 40 attached to the above-described first housing 20 is composed of a top wall 41 and a circumferential wall 42 hanging down from its periphery, and is formed in a frame shape that is open on the opposed surface side (lower side) of the first housing 20.

[0063] As Figure 2 、 Figure 3 shown, in the second housing 40, a motor arrangement portion 43, a gear arrangement portion 44, and a connector insertion portion 45 are respectively provided at positions corresponding to the motor arrangement portion 23, the gear arrangement portion 24, and the connector insertion portion 25 of the first housing 20. It should be noted that a portion of the peripheral wall 42 on the side of the gear arrangement portion 44 and opposite to the arrangement portion of the worm 14 is curved.

[0064] In addition, a plurality of engaging pieces 47 are vertically provided at positions on the outer periphery of the peripheral wall 42 corresponding to the plurality of engaging protrusions 29 of the first housing 20. By engaging these plurality of engaging pieces 47 with the plurality of engaging protrusions 29, as Figure 3 、 Figure 4 (B) shown, the second housing 40 is mounted on the first housing 20 to form the base 11 as the housing. And, inside the base 11, a configuration space for the motor 13 is provided by the motor arrangement portions 23 and 43, a configuration space for the worm 14 and the rotating body 60 is provided by the gear arrangement portions 24 and 44, and a power connector (not shown) is inserted through the connector insertion portions 25 and 45, and the connector insertion portions are provided.

[0065] It should be noted that a cylindrical connector housing 16 (refer to Figure 2 ) separate from the base 11 is mounted on the above connector insertion portion. A pair of bus bars 17, 17 and a sealing ring 18 are arranged inside the connector housing 16, and a power connector (not shown) for supplying power to the motor 13 is inserted.

[0066] In addition, a pair of mounting flanges 48, 48 respectively protrude from the lower end portion of the peripheral wall 42 (the end portion on the side opposite to the facing surface of the first housing 20) at positions corresponding to the pair of mounting flanges 30, 30 of the first housing 20. As Figure 11 shown, positioning pins 48a respectively protrude from the inner surfaces of the respective mounting flanges 48. And when the second housing 40 is mounted on the first housing 20, one positioning pin 48a is inserted into the circular hole 30a, and the other positioning pin 48a is inserted into the long hole 30b in a manner that allows for positional deviation, thereby appropriately correcting dimensional errors between the two housings 20 and 40 for mounting. In addition, as Figure 2 shown, a plurality of mounting holes 48b for mounting the opening and closing body 5 are respectively formed in the two mounting flanges 48, 48.

[0067] Moreover, as Figure 2 、 Figure 11As shown in (A), a support portion 51 protrudes from a position on the top wall 41 that matches the elastic member arrangement recess 27 provided in the first housing 20, and is located inside the curved portion on the side opposite to the arrangement portion of the worm 14 on the circumferential wall 42 on the gear arrangement portion 44 side.

[0068] The support portion 51 is a wide protruding piece that extends in a curved shape along the circumferential direction of the circumferential wall 42. In addition, the support portion 51 is inserted into a support hole 93 (refer to Figure 7 (A)) of the elastic member 90 described later. Moreover, as Figure 11 shown, tapered surfaces 52, 53 that narrow the tip of the support portion 51 are formed on both outer side surfaces in the width direction on the tip side in the protruding direction of the support portion 51.

[0069] In addition, a locking step portion 53b is formed on the base end side of the tapered surface 53 on the side opposite to the wall portion 42a described later with a notch 53a interposed therebetween. The locking step portion 53b is locked to the back peripheral edge of the support hole 93 of the elastic member 90.

[0070] Moreover, as Figure 2 shown, a plurality of ribs 51a are protrudingly provided at a predetermined interval on the outer surface on the base end side of the support portion 51. The plurality of ribs 51a abut against the inner surface 93a of the enlarged diameter portion of the support hole 93 of the elastic member 90 (refer to Figure 11 (B)). Figure 7

[0071] In addition, a notch portion 55 is formed on the outer circumference of the housing at a position opposite to the support portion 51 that locks the base portion 91 of the elastic member 90. In the case of the present embodiment, a notch portion 55 that is cut in an arc shape along the circumferential wall 42 is formed at a position opposite to the support portion 51 on the circumferential wall 42 on the gear arrangement portion 44 side of the second housing 40 and on the side opposite to the arrangement portion of the worm 14 and having a curved shape.

[0072] As Figure 4 (B), Figure 11 shown, the peripheral edge portion at one circumferential end of the circumferential wall on the gear arrangement portion 44 side and the notch portion 55 constitutes a wall portion 42a that is arranged at a position opposite to the outer circumference of the rotating body 60.

[0073] In addition, as Figure 2 shown, a circular opening 56 for the rotation portion 62 of the rotating body 60 described later to protrude is formed in the top wall 41 on the gear arrangement portion 44 side. Moreover, as Figure 17 shown, ribs 57 are protrudingly provided from the back side (the inner space side of the housing) of the opening 56 and from the peripheral edge except for the support portion 51.

[0074] ​The base described above is composed of a pair of housings 20 and 40, but it can also be configured as a single component. In addition, the shapes and structures of the respective parts (bottom wall, peripheral wall, engaging protrusion, engaging piece, fitting flange, notch, etc.) of the base and each housing are not limited to the above-described embodiments. It should be noted that the support portion 51 for supporting the elastic member 90 protrudes from the second housing 40 side, but it can also be configured to protrude from the first housing 20 side. In addition, the shape and structure of the support portion are not limited to the above-described embodiments.

[0075] Next, the rotating body 60 will be described in detail.

[0076] As Figure 2 , Figure 6 shown, the rotating body 60 of the present embodiment has: a gear portion 61, which is composed of a top wall 61a and a substantially cylindrical peripheral wall 61b hanging down from its peripheral edge, and has a substantially cylindrical frame shape with an open bottom; and a rotating portion 62, which is coaxially connected to the gear portion 61 and has a smaller diameter than the gear portion 61.

[0077] It should be noted that an O-ring 15 is attached to the outer periphery of the rotating portion 62 to seal the gap between the opening portion 56 of the second housing 40 and the rotating body 60 as Figure 17 shown.

[0078] In addition, as Figure 17 shown, a shaft hole 63 is formed through the radial center of the top wall 61a of the rotating portion 62 and the gear portion 61. Moreover, as Figure 6 , Figure 17 shown, a substantially cylindrical tubular portion 64 protrudes from the back side of the top wall 61a of the gear portion 61 and around the periphery of the shaft hole 63. In addition, a substantially C-shaped inner protruding portion 66 protrudes from the inner peripheral surface of the tubular portion 64, and the inner protruding portion 66 is provided with an axial notch 67 formed by cutting along the axial direction of the tubular portion 64 in a part of the circumferential direction. The convex portion 33 provided on the support shaft 32 can be inserted through the axial notch 67. It should be noted that the inner protruding portion 66 is formed in the range from the axial lower end portion of the tubular portion 64 (the end portion facing the bottom wall 21 of the first housing 20) to the axial middle portion (refer to Figure 17 ).

[0079] The inner side portion of the inner protruding portion 66 of the tubular portion 64 and the inner side portion of the shaft hole 63 constitute a support hole 65 (refer to Figure 17 , Figure 18 ). And, the support shaft 32 provided in the first housing 20 is inserted into the support hole 65 to rotatably support the rotating body 60 on the first housing 20.

[0080] As a result, the rotating body 60 is rotatably accommodated in the first housing 20 constituting the base 11. However, the rotating body 60 may also be placed on the base 11. Figure 18 The base 11B is shown in FIG. 11B which is only in the form of a plate and not in the form of a shell (see Figure 18 However, in this case, the rotating body 60 is placed on the base 11B.

[0081] It should be noted that, in the present embodiment, a support shaft 32 is provided on the first shell 20 of the base 11, and an axial hole 63 and a cylindrical portion 64 into which the support shaft 32 can be inserted are provided on the rotating body 60 side, and the rotating body 60 is accommodated and held in the first shell 20 in a rotatable manner. However, for example, it may also be provided that a support shaft is provided on the second shell 40 side, and the rotating body 60 is accommodated and held in the second shell 40, or alternatively, the support shaft is provided on the rotating body side instead of the base, and a supporting hole into which the support shaft can be inserted is provided on the base side, and the rotating body is accommodated or placed on the base in a rotatable manner.

[0082] In addition, the inner diameter of the shaft hole 63 is formed to be larger than the outer diameter of the top end portion of the support shaft 32 including the protrusion 33 (see Figure 17 ) The support shaft 32 including the protrusion 33 can be received in the shaft hole 63.

[0083] Furthermore, a mortar-shaped guide surface 66a is formed on the lower end surface of the inner protrusion 66 (see Figure 17 , Figure 18 ), so that the support shaft 32 can be easily inserted from the lower end opening of the cylinder 64. In addition, the upper end of the inner protrusion 66 is provided with a table-shaped (Japanese: segment-shaped) locking surface 66b (in the upper end) that can be locked by the protrusion 33 provided on the support shaft 32. Figure 17 On the upper surface, the locking surface 66b is separated from the protrusion 33, but when an external force acts in a direction away from the bottom wall 21 of the first shell 20 on the rotating body 60, the protrusion 33 is engaged with the locking surface 66b).

[0084] It should be noted that if Figure 17 As shown, the inner diameter of the inner protrusion 66 is smaller than the inner diameter of the shaft hole 63 and the outer diameter of the top end of the support shaft 32 including the protrusion 33, and is adapted to the outer diameter of the support shaft 32. Figure 17 As shown, when the support shaft 32 is inserted into the support hole 65, the convex portion 33 of the support shaft 32 overlaps (laps) with the inner protrusion 66 in the radial direction and is arranged opposite to the locking surface 66b, so that the rotating body 60 can be rotatably supported on the support shaft 32 in a state of reducing shaking.

[0085] Then, the axial notch 67 of the rotating body 60 is aligned with the convex portion 33 of the support shaft 32 (see Figure 9) Insert the support shaft 32 through the lower end opening of the cylindrical portion 64. After the convex portion 33 is inserted out through the upper opening of the axial notch 67, rotate the rotating body 60 in the direction shown by the arrow F2 (the direction opposite to the rotation biasing direction of the torsion spring 12) against the rotation biasing force of the torsion spring 12. The convex portion 33 is displaced circumferentially relative to the axial notch 67. Therefore, the rotating body 60 can be held against detachment relative to the support shaft 32.

[0086] In addition, as Figure 9 shown, a convex portion 68 is protrudingly provided from a circumferentially defined portion on the inner peripheral surface of the shaft hole 63 and a position below it (the position on the side of the inner protruding portion 66). For this convex portion 68, its proximal end side is connected to the engaging surface 66b of the inner protruding portion 66. In addition, the convex portion 68 approaches / depart from the convex portion 33 of the support shaft 32.

[0087] In addition, as Figure 6 shown in (A), on the surface of the rotating portion 62 (the surface on the side of the opening portion 56 of the second housing 40), a pair of pivot support portions 69, 69 are protrudingly provided at positions opposed to the rotation center of the rotating portion 62 (the position coinciding with the axis of the shaft-like support shaft 32). The tips of the pair of pivot support portions 69, 69 bulge spherically. And the pair of pivot support portions 69, 69 are inserted into the proximal end portions 83, 83 of the pair of locking members 80, 81 in a state of preventing detachment, and the proximal end portions 83, 83 of the pair of locking members 80, 81 are respectively pivotally supported at positions opposed to the rotation center of the rotating portion 62. Thus, it is configured such that when the rotating body 60 rotates, the pair of locking members 80, 81 slide in opposite directions synchronously (refer to Figure 20 ).

[0088] In addition, as Figure 6 shown in (B), a substantially fan-shaped engaging portion 70 is protrudingly provided from the back side of the top wall 61a of the gear portion 61. For this engaging portion 70, its base end portion with a narrow width is connected to the outer periphery of the cylindrical portion 64. In addition, the second arm portion 12c of the torsion spring 12 serving as a biasing unit is engaged with one side surface 70a in the circumferential direction of the engaging portion 70. It should be noted that, as described above, the first arm portion 12b of the torsion spring 12 is engaged with the spring engaging groove 34a provided in the first housing 20. In a state where the first arm portion 12b and the second arm portion 12c are separated from each other, the rotating body 60 is rotatably supported by the support shaft 32. Therefore, the rotating body 60 is biased in the direction approaching the first arm portion 12b of the torsion spring 12 from the second arm portion 12c of the torsion spring 12, that is, Figure 10 , Figure 19 the direction of the arrow F1 in,

[0089] In addition, as Figure 2 ,Figure 6 As shown, on the outer peripheral surface of the peripheral wall 61b of the gear portion 61 and within a specified circumferential range, teeth 71 that mesh with the teeth 14a of the worm 14 are formed. Thus, when the motor 13 rotates the worm 14, the rotating body 60 provided with the teeth 71 that mesh with the teeth 14a of the worm 14 rotates against the rotational biasing force of the torsion spring 12. It should be noted that, as Figure 12 shown, when viewed axially from the rotating body 60, in the present embodiment, the teeth 71 are formed within the range of the outer surface of the peripheral wall 61b from the surface close to one pivot support portion 69 to the surface close to the other pivot support portion 69.

[0090] Moreover, with respect to the rotating body 60, a protruding portion is provided on a part of its outer periphery. In the present embodiment, as Figure 12 shown, when viewed axially from the rotating body 60, the first protruding portion 72 protrudes from the outer peripheral surface of the peripheral wall 61b of the gear portion 61 and at a position close to the circumferential one end portion of the teeth 71, and the second protruding portion 74 protrudes from the outer peripheral surface of this peripheral wall 61b and at a position close to the circumferential other end portion of the teeth 71.

[0091] And, as Figure 12 shown, in a state where the motor 13 is not operating and the worm 14 is not rotating, the second protruding portion 74 of the rotating body 60 that is rotationally biased by the rotational biasing force of the torsion spring 12 abuts against a later-described abutting portion 94 of the elastic member 90, and the rotational position of the rotating body 60 is restricted. In addition, as Figure 15 shown, when the motor 13 operates, the worm 14 rotates, and the rotating body 60 rotates in the direction opposite to the rotational biasing direction (refer to the arrow F2 in Figures 12 - 14 ) against the rotational biasing force of the torsion spring 12 to the maximum extent, the first protruding portion 72 of the rotating body 60 abuts against a later-described stopper portion 92 of the elastic member 90, and the rotational position of the rotating body 60 is restricted. That is, the above-described first protruding portion 72 constitutes the "protruding portion" in the present invention.

[0092] It should be noted that, as Figure 2 、 Figure 6 shown, notches 72a, 74a are respectively formed on the side surfaces of the first protruding portion 72 and the second protruding portion 74 that face away from the teeth 71 and on the side of the surfaces that abut against the elastic member 90.

[0093] In addition, as Figure 6 、 Figure 12 shown, a sliding contact portion 76 is provided on a part of the outer periphery of the rotating body 60, and this sliding contact portion 76 slidably contacts the elastic member 90 (here, slidably contacts the stopper portion 92 of the elastic member 90) during the process of the protruding portion (the first protruding portion 72) approaching the stopper portion 92 of the elastic member 90. Moreover, this sliding contact portion 76 is formed in a shape that extends along the outer periphery of the rotating body 60.

[0094] The above-mentioned sliding contact portion 76 will be described in detail. In Figure 12 , the imaginary outer peripheral surface 61c of the peripheral wall 61b (the peripheral surface in the case where the peripheral wall 61b is extended by a fixed outer diameter) is shown by a double-dashed line. And, as Figure 12 shown, the sliding contact portion 76 in the present embodiment is formed by a first sliding contact portion 76a and a second sliding contact portion 76b. The first sliding contact portion 76a starts from a position between the first protruding portion 72 and the second protruding portion 74 of the peripheral wall 61b of the gear portion 61 and close to the first protruding portion 72, and bulges in a substantially arc shape toward the outer diameter direction with respect to the imaginary outer peripheral surface 61c of the peripheral wall 61b. The second sliding contact portion 76b protrudes from the end of the first sliding contact portion 76a toward the first protruding portion 72, protruding in a manner that gradually becomes higher in the outer diameter direction and higher than the first sliding contact portion 76a.

[0095] The rotating body described above is not limited to the above-mentioned shape and structure, as long as it has at least a shape and structure with a protruding portion and a sliding contact portion. In addition, the rotating body 60 in the present embodiment has a pair of protruding portions 72 and 74, but as long as it has a contact portion that abuts against the stopper portion of the elastic member.

[0096] Next, the elastic member 90 will be described in detail.

[0097] As Figure 7 shown, the elastic member 90 is a member having cushioning properties formed of a prescribed elastic material, and has: a base portion 91 that is engaged with and supported by the support portion 51 provided on the base 11; and a stopper portion 92 that abuts against the protruding portion (the first protruding portion 72) of the rotating body 60 to limit the maximum rotation position of the rotating body 60 in a prescribed direction. It should be noted that the above-mentioned "prescribed direction" in the present embodiment refers to the direction in which the protruding portion (the first protruding portion 72) of the rotating body 60 abuts against the stopper portion 92, that is, Figures 12 - 14 the direction shown by the arrow F2 (the direction opposite to the direction in which the torsion spring 12 as a biasing unit biases the rotation of the rotating body 60).

[0098] The elastic member 90 in the present embodiment is in a shape of a thick-walled block that extends a prescribed length and is formed with a prescribed thickness in a curved surface shape as a whole, so as to fit the curved peripheral walls 22 and 42 on the gear arrangement portion side of the first housing 20 and the second housing 40 that constitute the base 11.

[0099] Regarding the base 91, both side surfaces 91a and 91b along its longitudinal dimension direction are curved surfaces. One side surface 91a is a surface arranged to face the inner sides of the peripheral walls 22 and 42 of the gear arrangement parts of the two housings 20 and 40. The other side surface 91b is a surface arranged to face the outer side of the peripheral wall 61b of the gear part 61 of the rotating body 60, and this other side surface 91b constitutes the "surface facing the outer periphery of the rotating body" in the present invention.

[0100] In addition, a support hole 93 is formed inside the base 91, and the support part 51 provided on the second housing 40 constituting the base 11 is inserted into and fixed to this support hole 93. This support hole 93 is an elongated hole extending along the longitudinal dimension direction of the base 91, and both inner surfaces 93a and 93b along the longitudinal dimension direction are curved surfaces. Moreover, the other end part in the longitudinal dimension direction of the base 91 constitutes an abutting part 94. In this abutting part 94, in a state where the motor 13 does not operate and the worm 14 does not rotate, the second protruding part 74 of the rotating body 60 that is rotationally biased by the torsion spring 12 abuts against this abutting part 94 (refer to Figure 12 ).

[0101] In addition, a thin-walled protruding rib 93c protrudes in the circumferential direction from the bottom side of the support hole 93 (the side on the tip side of the support part 51 when the elastic member 90 is attached to the support part 51) and one inner surface 93a of the support hole 93. As Figure 18 shown, the internal space of the support hole 93 is divided by the rib 93c into: a reduced-diameter part for only the insertion of the tip side of the support part 51; and an enlarged-diameter part that is enlarged compared to this reduced-diameter part for the insertion of the support part 51 and a plurality of ribs 51a. And when the support part 51 is inserted into the support hole 93, the plurality of ribs 51a provided on the support part 51 abut against the inner surface 93a of the enlarged-diameter part of the support hole 93 to suppress the shaking of the elastic member 90 relative to the support part 51, and the locking step part 53b of the support part 51 is locked to the back peripheral edge of the support hole 93. Thus, the base 91 is supported by the support part 51, and the elastic member 90 is attached to the support part 51 (refer to Figure 11 (B)). It should be noted that in a state where the base 91 is supported by the support part 51 and the elastic member 90 is attached to the support part 51, as Figure 12 shown, most of the circumference and a part of the width direction of the base 91 and the stopper part 92 other than the protruding wall part 95 and the protruding part 96 described later are arranged between the outer periphery of the rotating body 60 and between the first protruding part 72 and the second protruding part 74 of the elastic member 90.

[0102] Further, a protruding wall portion 95 that protrudes within a specified range from the top-side end surface of one side surface 91a of the base portion 91 (the end surface on the top wall 41 side of the second housing 40 when the elastic member 90 is attached to the support portion 51) to the bottom side enters the notch portion 55 of the second housing 40 and blocks the notch portion 55.

[0103] Moreover, with respect to the elastic member 90 that is attached to the support portion 51 by being supported by the base portion 91 on the support portion 51, in a state where the second housing 40 is attached to the first housing 20, a portion of the base portion 91 that is below the protruding wall portion 95 is accommodated and disposed within the elastic member disposition concave portion 27 of the first housing 20, and the lower end portion of the protruding wall portion 95 is engaged with the upper end portion of the peripheral wall 22 of the first housing 20 provided with the elastic member disposition concave portion 27 (refer to Figure 4 (A) of FIG. Figure 11 . Further, in the above state, the upper end portion of the protruding wall portion 95 is engaged with the upper end portion of the notch portion 55 of the second housing 40, and both circumferential end portions of the protruding wall portion 95 are respectively engaged with both circumferential end portions of the notch portion 55, thereby closing the notch portion 55 (refer to Figure 4 (B) of FIG.

[0104] In addition, as Figure 7 shown, an extending portion 96 that extends in a plate shape narrower than the width of the base portion 91 protrudes from the other end portion in the longitudinal dimension direction of the base portion 91 and near one side surface 91a. As Figure 10 shown, in a state where a portion of the base portion 91 that is below the protruding wall portion 95 is accommodated and disposed within the elastic member disposition concave portion 27 of the first housing 20, the extending portion 96 is disposed opposite to the other circumferential end portion side of the elastic member disposition concave portion 27 of the peripheral wall 22 on the gear disposition portion 24 side of the first housing 20.

[0105] On the other hand, a stopper portion 92 protrudes from one end portion in the longitudinal dimension direction of the base portion 91. For the stopper portion 92 in the present embodiment, a deformation hole 92a having a substantially semicircular shape is formed inside thereof, and an arched deformation wall portion 92b is formed across the deformation hole 92a. Further, the outer periphery of the deformation wall portion 92b has a curved surface shape with rounded corners.

[0106] Moreover, as Figure 12 shown, the stopper portion 92 of the elastic member 90 is disposed so as to be biased in a direction opposite to the specified direction with respect to the base portion 91.

[0107] Specifically, as Figure 12As shown, in a state where the base portion 91 is supported by the support portion 51 and the elastic member 90 is attached to the support portion 51, the stopper portion 92 is disposed so as to be biased with respect to the base portion 91 in a direction opposite to the specified direction ( Figures 12 - 14 the direction indicated by the arrow F2 in Figure 12 ), that is, in a direction opposite to the direction in which the torsion spring 12 as a biasing unit biases the rotation of the rotating body 60 (the direction indicated by the arrow F1). In other words, it protrudes so as to be biased in a direction in which it abuts against the protruding portion (first protruding portion 72) of the rotating body 60. Further, when viewed from the axial direction of the rotating body 60, the base portion 91 and the stopper portion 92 are disposed so as to be positionally offset with respect to the circumferential direction of the rotating body 60.

[0108] Moreover, the stopper portion 92 has a bulging portion 92d that bulges toward the outer surface of the rotating body 60 more than the surface (the other side surface 91b) of the base portion 91 that faces the outer periphery of the rotating body 60. To explain this, in Figure 7 (B), a virtual outer surface 91c (the circumferential surface obtained by extending the side surface 91b with a fixed inner diameter) of the side surface 91b of the base portion 91 is shown by a two-dot chain line. And as shown in Figure 7 (B), the bulging portion 92d in the present embodiment is formed in a shape that bulges toward the outer surface of the circumferential wall 61b of the gear portion 61 of the rotating body 60 more than the virtual outer surface 91c on the base end side of the arch-shaped deformed wall portion 92b of the stopper portion 92 and on the side of the side surface 91b of the base portion 91.

[0109] Further, as shown in Figure 4 (B), Figure 11 (B), Figure 12 when the second housing 40 is attached to the first housing 20, the stopper portion 92 of the elastic member 90 in a state where the base portion 91 is supported by the support portion 51 is disposed between the outer periphery of the rotating body 60 and the wall portion 22a on the first housing 20 side and the wall portion 42a on the second housing 40 side.

[0110] As the elastic material forming the elastic member 90 described above, for example, rubber materials such as butyl rubber (isobutylene isoprene rubber: IIR), nitrile rubber (NBR), ethylene propylene rubber (EPM, EPDM), butadiene rubber (BR), polyurethane-based rubber, silicone-based rubber, fluorine-based rubber, acrylic rubber, etc., and thermoplastic elastomers can be preferably used. Particularly preferably, an elastic material with low resilience (high shock absorption ability) is used.

[0111] It should be noted that all parts (the base portion 91, the stopper portion 92, the protruding wall portion 95, the protruding portion 96, etc.) constituting the elastic member 90 are integrally formed.

[0112] The elastic member described above is not limited to the above shape and structure, as long as it has at least a base portion and a stopper portion. For example, the elastic member can be set to the shape as shown in Figure 8 as shown.

[0113] Regarding the elastic member 90A of this modification example, mainly the shape of the stopper portion 92A is different from that of the stopper portion 92 of the elastic member 90. That is, regarding this stopper portion 92A, a convex portion 92f protrudes from the inner surface on the base portion 91 side of the deformation hole 92e and at the radial center thereof, and the deformation hole 92e is substantially U-shaped.

[0114] Moreover, along with the rotation operation of the rotating body 60, the elastic member 90 functions as follows to suppress the impact sound from the rotating body 60.

[0115] In Figure 12 it shows the case where the base portion 91 is supported by the support portion 51 and the elastic member 90 is attached to the support portion 51, and the motor 13 does not operate and the worm 14 does not rotate. In this state, the second protrusion 74 of the rotating body 60 that is rotationally biased by the rotational biasing force of the torsion spring 12 abuts against the abutting portion 94 of the elastic member 90, the rotational position of the rotating body 60 is restricted, and the first protrusion 72 (the protrusion in the present invention) of the rotating body 60 is disposed at a position deviated from the stopper portion 92 of the elastic member 90 by an amount corresponding to a predetermined circumferential length. In addition, in this state, the outer periphery on the rotating body 60 side of the elastic member 90 (the side surface 91b of the base portion 91 and the bulging portion 92d of the stopper portion 92) is separated from the outer periphery of the rotating body 60 (the peripheral wall 61b of the gear portion 61) with a predetermined gap and does not abut.

[0116] When starting from the state shown in the above Figure 12 and the motor 13 operates and the worm 14 rotates, the rotating body 60 rotates in the direction of arrow F2 against the rotational biasing force of the torsion spring 12. Then, as shown in Figure 13 shown, the first protrusion 72 approaches the stopper portion 92, and the sliding contact portion 76 of the rotating body 60 slides in contact with the stopper portion 92. Here, the first sliding contact portion 76a of the sliding contact portion 76 slides in contact with the bulging portion 92d of the stopper portion 92. At this time, since the bulging portion 92d is pressed by the first sliding contact portion 76a, a contact pressure acts between the first sliding contact portion 76a and the bulging portion 92d.

[0117] When starting from the state shown in Figure 13 and the rotating body 60 further rotates in the direction of arrow F2 and the first protrusion 72 further approaches the stopper portion 92, as shown in Figure 14As shown, the second sliding contact portion 76b of the sliding contact portion 76 is in sliding contact with the bulging portion 92d of the stopper portion 92. At this time, the bulging portion 92d is pressed by the second sliding contact portion 76b, and the deforming wall portion 92b of the stopper portion 92 is flexurally deformed in such a manner that the opening area of the deformation hole 92a slightly decreases, and a contact pressure acts between the second sliding contact portion 76b and the bulging portion 92d.

[0118] When starting from Figure 14 the state shown, when the rotating body 60 further rotates in the direction of arrow F2, the state in which the sliding contact portion 76 is in sliding contact with the bulging portion 92d of the stopper portion 92 is maintained, and the first protruding portion 72 abuts (collides) against the outer periphery of the deforming wall portion 92b of the stopper portion 92. Then, the deforming wall portion 92b of the stopper portion 92 is pressed from the outer surface side by the first protruding portion 72, and the deforming wall portion 92b is flexurally deformed in a substantially L shape so that the opening of the deformation hole 92a almost disappears in the radial direction and slightly remains in the circumferential direction, thereby absorbing the impact force from the first protruding portion 72 of the rotating body 60, and the first protruding portion 72 abuts against the flexurally deformed deforming wall portion 92b. Thus, the further rotation of the rotating body 60 is restricted, and the rotating body 60 stops.

[0119] As described above, in this locking device 10, when the rotating body 60 rotates against the rotational biasing force of the torsion spring 12 and the first protruding portion 72 abuts against the stopper portion 92 and the maximum rotation position is restricted, the sliding contact portions 76a, 76b of the rotating body 60 are in sliding contact with the bulging portion 92d of the stopper portion 92, the rotational speed of the rotating body 60 decays, and then, the first protruding portion 72 abuts against the deforming wall portion 92b of the stopper portion 92, causing the deforming wall portion 92b to be flexurally deformed. Thus, the impact sound (collision sound) when the first protruding portion 72 of the rotating body 60 collides with the elastic member 90 is reduced.

[0120] (Function and effect)

[0121] Next, the function and effect of the locking device 10 configured as described above will be described.

[0122] That is, when the opening and closing body 5 is pressed into the opening portion 2 in order to close the opening portion 2 of the fixed body 1, the tapered surfaces of the engaging portions 82, 82 of the pair of locking members 80, 81 are pressed against the inner surfaces on both sides of the opening portion 2, and the pair of locking members 80, 81 are pulled into the inside of the opening and closing body 5 against the biasing force of the torsion spring 12. Then, when the respective engaging portions 82, 82 reach the locking portions 3, 3, the rotating body 60 is rotationally biased by the biasing force of the torsion spring 12, the locking members 80, 81 are pushed out toward the outside of the opening and closing body 5, and the respective engaging portions 82, 82 are engaged with the locking portions 3, 3, so that the state in which the opening portion 2 of the fixed body 1 is closed by the opening and closing body 5 can be locked (refer to Figure 1 (A) ofFigure 19 ).

[0123] When the opening and closing body 5 is opened from the opening portion 2 of the fixed body 1, the switch 7 on the surface side of the opening and closing body 5 is operated. Then, power is supplied to the motor 13 through the bus bars 17, 17 from the power connector connected to the power source (not shown), the rotating shaft 13a of the motor 13 rotates, and the worm 14 rotates, and the rotating body 60 overcomes the rotational force of the torsion spring 12 and rotates to Figures 12 - 14 As a result, the engaging portions 82, 82 of the pair of locking members 80, 81 slide in the direction of disengaging from the locking portions 3, 3, and the engagement between the engaging portions 82 and the locking portions 3 is released, so that the switch 5 can move from the opening portion 2 of the fixed body 1 to open the opening portion 2 of the fixed body 1 (see Figure 1 (B) and Figure 20 ).

[0124] Furthermore, in the locking device 10, when Figure 12 When the motor 13 shown in the figure is not in operation and the worm 14 is not rotating, the motor 13 is in operation and the worm 14 is rotating, the rotating body 60 rotates in a predetermined direction, that is, the rotating body 60 overcomes the rotational force of the torsion spring 12 and rotates in a direction in which the first protrusion 72 approaches the stopper 92 of the elastic member 90 (refer to Figures 12 - 14 arrow F2).

[0125] At this time, as described above, the first sliding contact portion 76a and the second sliding contact portion 76b of the sliding contact portion 76 of the rotating body 60 and the stopper portion 92 of the elastic member 90 (here, the bulging portion 92d of the stopper portion 92) sequentially slide in contact, thereby attenuating the rotation speed of the rotating body 60, and finally Figure 15 As shown, the protrusion (first protrusion 72 ) of the rotating body 60 collides with the stopper 92 , whereby the rotation of the rotating body 60 is stopped.

[0126] At this time, if Figure 12 As shown, the stop portion 92 of the elastic member 90 is biasedly arranged in a direction opposite to the specified direction (the direction indicated by the arrow F1) relative to the base 91. Therefore, the rotation of the rotating body 60 can be stopped in a buffering manner, and together with the rotation speed attenuation effect of the sliding contact portion 76, the impact sound can be effectively reduced.

[0127] In addition, if Figure 4 (B) Figure 11 (B) Figure 12As shown, in the present embodiment, the base 11 has wall portions 22a and 42a disposed at positions facing the outer periphery of the rotating body 60, and the stopper portion 92 of the elastic member 90 is provided between the outer periphery of the rotating body 60 and the wall portions 22a and 42a. Therefore, when the rotating body 60 rotates in a specified direction, that is, when the rotating body 60 rotates against the rotational biasing force of the torsion spring 12 and its first protruding portion 72 collides with the stopper portion 92, excessive flexural deformation of the stopper portion 92 can be suppressed, and the impact force can be effectively attenuated.

[0128] Moreover, as Figure 7 shown, the stopper portion 92 in the present embodiment has a bulging portion 92d that bulges toward the outer surface of the rotating body 60 from the surface (the other side surface 91b) of the base portion 91 facing the outer periphery of the rotating body 60. Therefore, when the rotating body 60 rotates in the specified direction shown by the arrow F2, that is, when the rotating body 60 rotates against the rotational biasing force of the torsion spring 12, the sliding contact portions 76 (here, the first sliding contact portion 76a and the second sliding contact portion 76b) of the rotating body 60 can be easily brought into sliding contact with the bulging portion 92d of the stopper portion 92, effectively attenuating its rotational speed, and the flexural margin of the stopper portion 92 when the first protruding portion 72 of the rotating body 60 collides with the stopper portion 92 can be increased, improving the impact absorption effect.

[0129] In addition, as Figure 12 shown, the sliding contact portion 76 in the present embodiment is formed in a shape extending along the outer periphery of the rotating body 60. Therefore, it is possible to ensure that the rotating body 60 rotates in the specified direction shown by the arrow F2, that is, when the rotating body 60 rotates against the rotational biasing force of the torsion spring 12 and the sliding contact portion 76 of the rotating body 60 slides in contact with the stopper portion 92, the sliding contact distance is long, and the impact sound associated with the rotation of the rotating body 60 can be more effectively suppressed.

[0130] Moreover, in the present embodiment, as Figure 2 shown, there is a motor 13 for rotating the rotating body 60. The base 11 is a housing that houses the rotating body 60, the elastic member 90, and the motor 13 therein. A notch portion 55 is formed at a position on the outer periphery of the housing and facing the supporting portion 51 to which the base portion 91 of the elastic member 90 is fixed. The base portion 91 of the elastic member 90 is supported by the supporting portion 51 so as to block the notch portion 55.

[0131] According to the above solution, since the notch portion 55 is formed on the outer periphery of the housing (here, the second housing 40), the supporting portion 51 can be provided closer to the outer peripheral side of the housing. As a result, the wall thicknesses of the supporting portion 51 and the elastic member 90 can be ensured without changing the outer diameters of the housing and the rotating body 60, and since the notch portion 55 of the housing is blocked by the base portion 91 of the elastic member 90 (here, blocked by the protruding wall portion 95 of the base portion 91), the impact sound associated with the rotation of the rotating body 60 can be further effectively suppressed.

[0132] (Other Embodiments of the Locking Device for the Opening / Closing Body)

[0133] In Figures 21 - 24 other embodiments of the locking device for the opening / closing body of the present invention are shown. It should be noted that the same reference numerals are given to substantially the same parts as those in the above-described embodiments, and the description thereof is omitted.

[0134] The locking device 10 of the above-described embodiment is configured to electrically open the opening / closing body 5. In contrast, the locking device 10A for the opening / closing body in the present embodiment (hereinafter, also simply referred to as "locking device 10A") is configured to mechanically open the opening / closing body 5 by the operator's manual force.

[0135] As Figure 21 and Figure 22 shown, the base 11A has a substantially cylindrical frame shape with an open top and a bottom, and has substantially the same shape as the shape of the gear arrangement portion 24 side of the first housing 20 in the above-described embodiment. And, in a state where the rotating body 60 is exposed from the upper opening of the base 11A, the rotating body 60 is supported rotatably in a non-disengaging state via the support shaft 32 (see Figure 23 , Figure 24 ). That is, the rotating body 60 is rotatably received and held in the base 11A. In addition, a support portion 51A for supporting the elastic member 90 projects from a circumferential specified position of the bottom wall 21. Moreover, an elastic member arrangement recess 27 is formed on the outer peripheral side of the support portion 51A of the peripheral wall 22, and an opening 56 is formed.

[0136] The rotating body 60A is different from the rotating body 60 of the above-described embodiment, and has a shape in which teeth 71 are not formed on its outer periphery. That is, a part of the outer periphery of the rotating body 60A is cut in a specified range in the circumferential direction, a first protrusion 72 (constituting the protrusion of the present invention) is formed at one circumferential end portion thereof, a second protrusion 74 is formed at the other circumferential end portion, and a sliding contact portion 76 is formed between the two protrusions 72 and 74. In addition, one of a pair of locking members 80 and 81 pivotally supported by a pair of pivot support portions 69 and 69 pivotally supported by the rotating body 60 is operated by an operation member (not shown) to be slidable, and thereby, the other locking member slides synchronously via the rotating body 60.

[0137] In the locking device 10A of the present embodiment, the same operational effects as those of the locking device 10 of the above-described embodiment can also be obtained.

[0138] It should be noted that the present invention is not limited to the above-described embodiments, 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.

[0139] Description of Reference Numerals:

[0140] 1: Fixed body; 2: Opening; 3: Locking part; 5: Opening / closing body; 10, 10A: Locking device of opening / closing body (locking device); 10A: Locking device; 11, 11A: Base; 12: Torsion spring; 13: Motor; 14: Worm; 20: First housing; 22a: Wall part; 32: Support shaft; 33: Protrusion; 40: Second housing; 42a: Wall part; 51: Support part; 55: Notch part; 56: Opening; 60: Rotating body; 63: Axial hole; 71: Tooth; 72: First protrusion (protrusion); 74: Second protrusion; 76: Sliding contact part; 76a: First sliding contact part; 76b: Second sliding contact part; 80, 81: Locking member; 90, 90A: Elastic member; 91: Base part; 92, 92A: Stopping part; 92d: Bulging part.

Claims

1. A locking device for an opening / closing body, which is assembled to an opening of a fixed body in an openable / closable manner, wherein the locking device for the opening / closing body is characterized by comprising: A locking portion provided on one of the fixed body and the opening / closing body; A base disposed on the other of the fixed body and the opening / closing body; A rotating body rotatably accommodated or placed on the base, and having a protruding portion on a part of its outer periphery; A locking member that slides in linkage with the rotation of the rotating body and engages with / disengages from the locking portion; And An elastic member having a base portion and a stopper portion, wherein the base portion is locked to a supporting portion provided on the base and is supported thereby, and the stopper portion abuts against the protruding portion of the rotating body to limit the maximum rotational position of the rotating body in a specified direction, The stopper portion of the elastic member is disposed so as to be biased in a direction opposite to the specified direction with respect to the base portion, A sliding contact portion that is provided on a part of the outer periphery of the rotating body and slidably contacts the elastic member as the protruding portion approaches the stopper portion.

2. The locking device for an opening / closing body according to claim 1, wherein The base has a wall portion disposed at a position opposed to the outer periphery of the rotating body, The stopper portion of the elastic member is disposed between the outer periphery of the rotating body and the wall portion.

3. The locking device for an opening / closing body according to claim 1 or 2, wherein The stopper portion has a bulging portion that bulges toward the outer surface of the rotating body from a surface of the base portion opposed to the outer periphery of the rotating body.

4. The locking device for an opening / closing body according to claim 1 or 2, wherein The sliding contact portion of the rotating body is formed in a shape extending along the outer periphery of the rotating body.

5. The locking device for an opening / closing body according to claim 1 or 2, comprising: A motor for rotating the rotating body, The base serves as a housing that accommodates the rotating body, the elastic member, and the motor therein, A notch portion is formed at a position on the outer periphery of the housing and opposed to the supporting portion to which the base portion of the elastic member is locked, The base portion of the elastic member is supported by the supporting portion so as to block the notch portion.

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