WO2018096968A1

WO2018096968A1 - Buckle device

Info

Publication number: WO2018096968A1
Application number: PCT/JP2017/040806
Authority: WO
Inventors: 靖徳秦; 拓宏斎藤; 真松崎
Original assignee: 株式会社東海理化電機製作所
Priority date: 2016-11-28
Filing date: 2017-11-13
Publication date: 2018-05-31
Also published as: JP2018086893A; JP6959730B2

Abstract

In this buckle device (10), an opening part of an outer cover (60) on one side along a cover longitudinal direction is closed by a closing member (88). When a motor of a motor actuator (38) is operated and the outer cover (60) is moved upward at a forward incline with respect to a vehicle, the closing member (88) moves with the movement of the outer cover (60) and the opening part of the outer cover (60) on one side along the cover longitudinal direction is opened. Therefore, when a tongue (28) is inserted into the outer cover (60), pushing of the tongue (28) against the closing member (88) can be minimized.

Description

Buckle device

The present invention relates to a buckle device for a seat belt device of a vehicle.

For example, in the buckle device disclosed in Japanese Patent Application Laid-Open No. 2013-203195, a lid member is provided at the tongue insertion portion of the buckle.

The lid member is biased in the direction of closing the tongue insertion portion of the buckle. When the lid member is pressed by the tongue inserted into the buckle, the lid member is moved against the biasing force, and the tongue insertion portion Is opened and the tongue is inserted into the buckle.

In such a buckle device, the lid member is repeatedly pressed by the tongue each time the tongue is inserted into the buckle. For this reason, since the lid member can withstand repeated pressing by such a tongue, the mechanical strength of the lid member is increased.

The object of the present invention is to obtain a buckle device that can suppress the increase in strength of the closed member in consideration of the above facts.

A buckle device according to a first aspect of the present invention includes a buckle body capable of inserting a tongue provided on a webbing of a seat belt device of a vehicle, and a buckle body provided on the buckle body, and closing an insertion portion of the tongue in the buckle body. A closing member; and an opening portion that is provided on the buckle body and is operated to move the closing member to open an insertion portion of the tongue in the buckle body.

In the buckle device according to the first aspect of the present invention, the closing member is moved by operating the opening portion, whereby the tongue insertion portion in the buckle body is opened. For this reason, when a tongue is inserted in a buckle main body, it is not necessary to press a closing member with a tongue. As a result, the strength of the closing member can be suppressed.

The buckle device according to a second aspect of the present invention is the buckle device according to the first aspect, further comprising a buckle moving part that moves the buckle body when actuated, and the opening part operates the buckle moving part. Linked to

According to the buckle device of the second aspect of the present invention, when the buckle moving part is operated, the buckle body is moved and the opening part is interlocked with the buckle moving part. No special operation is required to activate the opening.

The buckle device according to a third aspect of the present invention is the buckle device according to the second aspect, wherein the opening is mechanically interlocked with the movement of the buckle body.

According to the buckle device of the third aspect of the present invention, the opening part is mechanically interlocked with the movement of the buckle body. For this reason, it can suppress that control of the action | operation of an open part becomes complicated.

The buckle device according to a fourth aspect of the present invention is the buckle device according to any one of the first to third aspects, wherein the opening portion is operated in conjunction with a passenger on the vehicle.

According to the buckle device of the fourth aspect of the present invention, the opening portion is actuated in conjunction with the occupant getting on the vehicle. For this reason, when the tongue is inserted into the buckle body by an occupant riding in the vehicle, the tongue insertion portion in the buckle body is opened. For this reason, when a tongue is inserted in a buckle main body, it is not necessary to press a closing member with a tongue. As a result, the strength of the closing member can be suppressed.

The buckle device according to a fifth aspect of the present invention is the buckle device according to any one of the first to fourth aspects, wherein the opening portion is operated in conjunction with opening and closing of a vehicle door.

According to the buckle device of the fifth aspect of the present invention, the opening portion is operated in conjunction with opening and closing of the vehicle door. For this reason, when the occupant opens and closes the door of the vehicle and the occupant gets into the vehicle, the tongue insertion portion in the buckle body is opened. For this reason, when a tongue is inserted in a buckle main body, it is not necessary to press a closing member with a tongue. As a result, the strength of the closing member can be suppressed.

The buckle device according to a sixth aspect of the present invention is the buckle device according to any one of the first to fourth aspects, wherein the opening portion is actuated by a passenger sitting on a vehicle seat.

According to the buckle device of the sixth aspect of the present invention, the opening portion is actuated by the occupant sitting on the vehicle seat. For this reason, when an occupant who gets on the vehicle sits on the seat of the vehicle and tries to insert the tongue into the buckle body, the insertion portion of the tongue in the buckle body is opened. For this reason, when a tongue is inserted in a buckle main body, it is not necessary to press a closing member with a tongue. As a result, the strength of the closing member can be suppressed.

The buckle device according to a seventh aspect of the present invention is the buckle device according to any one of the first to fourth aspects, wherein the webbing is wound from the longitudinal base end side of the webbing and stored. The opening portion is operated in conjunction with the drawing of the webbing.

According to the buckle device of the seventh aspect of the present invention, when the webbing is pulled out from the webbing storage part, the opening part is actuated, whereby the closing member is moved and the insertion part of the tongue in the buckle body is opened. The Therefore, when the occupant pulls out the webbing from the webbing storage part to insert the webbing and inserts the tongue into the buckle body, the insertion part of the tongue of the buckle body can be opened. For this reason, it is not necessary to press the closing member with the tongue, and the strength of the closing member can be suppressed.

The buckle device according to an eighth aspect of the present invention is the buckle device according to any one of the first to seventh aspects, wherein the closing member is moved by the operation of the opening portion to insert the tongue in the buckle body. When a predetermined time elapses after opening, the closing member closes the insertion portion of the tongue in the buckle body.

According to the buckle device of the eighth aspect of the present invention, when the opening is actuated, the closing member is moved, and when a predetermined time elapses after the tongue insertion portion in the buckle body is opened, the buckle body The tongue insertion portion is closed by the closing member. For this reason, it can suppress that the open state of the insertion part of the tongue in a buckle main body becomes long.

The buckle device according to a ninth aspect of the present invention is the buckle device according to any one of the first to eighth aspects, wherein the closing member closes an insertion portion of the tongue in the buckle body. Is capable of moving in the movement direction when the tongue insertion portion in the buckle body is opened by receiving a load in the tongue insertion direction on the buckle body.

According to the buckle device of the ninth aspect of the present invention, when the closing member closes the tongue insertion portion in the buckle body, the load in the tongue insertion direction on the buckle body acts on the closing member. The closing member is movable in the moving direction when the tongue insertion portion of the buckle body is opened. For this reason, the tongue can be inserted into the buckle body even when the opening portion is not actuated.

As described above, in the buckle device according to the present invention, the strength of the closing member can be suppressed.

It is the side view which looked at the seatbelt device to which the buckle device concerning a 1st embodiment was applied from the vehicle width direction inside. It is side surface sectional drawing which looked at the buckle apparatus which concerns on 1st Embodiment from the vehicle width direction outer side. It is a perspective view of the switchgear of the buckle device concerning a 1st embodiment. It is the front view which looked at the outer cover from the cover longitudinal direction one side, and is a figure showing the state where the opening part of the cover longitudinal direction one side of the outer cover was closed by the closing member. It is the front view which looked at the outer side cover from the cover longitudinal direction one side, and is a figure which shows the state by which the opening part of the cover longitudinal direction one side of the outer cover was open | released. It is a control block diagram of the motor of the buckle device concerning a 1st embodiment. FIG. 6B is a cross-sectional view of the outer cover and the buckle of the buckle device according to the second embodiment, corresponding to a cross section taken along line 6-6 in FIG. 4A. It is sectional drawing corresponding to FIG. 6 of the outer side cover and buckle of the buckle apparatus which concerns on 3rd Embodiment, 4th Embodiment, and 5th Embodiment. It is a control block diagram of a motor and a solenoid of a buckle device according to a third embodiment and a fourth embodiment. It is a control block diagram of a motor and a solenoid of a buckle device according to a fifth embodiment.

Next, each embodiment of the present invention will be described with reference to FIGS. In each figure, an arrow FR indicates the vehicle front side to which the buckle device 10 is applied, an arrow OUT indicates the vehicle width direction outer side, and an arrow UP indicates the vehicle upper side.

Moreover, in each figure, arrow A shows the cover longitudinal direction one side of the outer cover 60 and the inner cover 68 which comprise this buckle apparatus 10, and arrow B shows the cover longitudinal direction other side of the outer cover 60 and the inner cover 68. Show. Further, in each drawing, an arrow D indicates the other side in the cover width direction of the outer cover 60 and the inner cover 68, and an arrow C indicates one side in the cover width direction of the outer cover 60 and the inner cover 68. In each figure, an arrow E indicates one side in the cover thickness direction of the outer cover 60 and the inner cover 68, and an arrow F indicates the other side in the cover thickness direction of the outer cover 60 and the inner cover 68.

Further, in the following description of each embodiment, the same reference numerals are given to the substantially same parts as those in the previous embodiment, and the detailed description thereof is omitted. To do.

<Configuration of First Embodiment>
(Configuration of the seat belt device 12)
As shown in FIG. 1, a seat belt device 12 to which the buckle device 10 according to the first embodiment is applied includes a webbing take-up device 14 as a webbing storage portion. The webbing retractor 14 is provided on the vehicle lower side of the center pillar 16 of the vehicle. The webbing take-up device 14 includes a spool 18. The center axis direction of the spool 18 is substantially the vehicle front-rear direction, and the spool 18 is rotatable in the winding direction which is one of the directions around the center axis and in the drawing direction opposite to the winding direction.

The longitudinal end of the long belt-like webbing 20 is locked to the spool 18. When the webbing 20 is pulled toward the front end in the longitudinal direction, the webbing 20 is pulled out from the spool 18 and the spool 18 is rotated in the pull-out direction. When the spool 18 is rotated in the winding direction, the webbing 20 is wound and stored on the spool 18 from the base end side in the longitudinal direction.

The front end of the webbing 20 in the longitudinal direction is drawn from the spool 18 to the upper side of the vehicle. A through anchor 22 is provided on the vehicle upper side of the webbing take-up device 14. The through anchor 22 is supported on the vehicle upper portion of the center pillar 16. A slit hole is formed in the through anchor 22, and the webbing 20 drawn from the spool 18 is folded back to the vehicle lower side through the slit hole of the through anchor 22.

The front end of the webbing 20 in the longitudinal direction is locked to the anchor plate 24. The anchor plate 24 is attached to the skeleton member constituting the seat 26 or the vehicle body of the vehicle outside the seat 26 in the vehicle width direction. A tongue 28 is provided at a portion between the through anchor 22 and the anchor plate 24 of the webbing 20. Corresponding to the tongue 28, the buckle device 10 is provided inside the seat 26 in the vehicle width direction.

(Configuration of buckle device 10)
As shown in FIGS. 1 and 2, the buckle device 10 includes a buckle driving device 30 that constitutes a buckle moving unit. The buckle driving device 30 includes a frame 32 as a slider guide mechanism. The frame 32 is fixed to a vehicle body side such as a floor portion of a vehicle body by a fastening portion such as a bolt. As shown in FIG. 2, the frame 32 includes a pair of guide walls 34 opposed to each other in the vehicle width direction as a slider guide portion, and a drive screw 36 as a drive portion is interposed between the guide walls 34. Is provided. The central axis direction of the drive screw 36 is along the vehicle front-rear direction, and the drive screw 36 is rotatable around the central axis.

On the other hand, a motor actuator 38 as a driving force output unit is provided on the vehicle front side of the frame 32. An end of the drive screw 36 on the front side of the vehicle is connected to the motor actuator 38, and the drive screw 36 is rotated around the central axis of the drive screw 36 by the driving force output from the motor 40 of the motor actuator 38. . As shown in FIG. 5, the motor 40 of the motor actuator 38 is electrically connected to a motor driver 42 constituting the control unit, and further, as an ECU 44 and a power source constituting the control unit via the motor driver 42. It is electrically connected to a battery 46 mounted on the vehicle. Energization of the motor 40 is controlled by the ECU 44 and the motor driver 42.

The ECU 44 is electrically connected to the courtesy switch 48. The courtesy switch 48 is, for example, a switch that is turned on when the door of the vehicle to which the courtesy switch 48 is applied is turned on and is turned off when the door of the vehicle is closed. In the ECU 44, the courtesy switch 48 is turned on. And the OFF state is determined.

On the other hand, as shown in FIG. 2, a slider 50 is provided between the guide walls 34 of the frame 32, and both side surfaces in the vehicle width direction of the slider 50 respectively contact the guide walls 34 of the frame 32. It is touched. Further, a screw hole is formed in the slider 50, and a drive screw 36 is passed through the screw hole of the slider 50. When the drive screw 36 is rotated, the slider 50 is guided by the guide walls 34 and slid in the vehicle front-rear direction.

Further, the buckle device 10 includes a wire rope 52 as a connecting member. The wire rope 52 is formed in a long shape. The longitudinal direction of the wire rope 52 extends along the vehicle front-rear direction on the proximal side in the longitudinal direction from the longitudinal intermediate portion of the wire rope 52, and the longitudinal proximal end of the wire rope 52 is further than the drive screw 36. The slider 50 is connected to the lower side of the vehicle. For this reason, when the slider 50 is slid in the vehicle front-rear direction, the wire rope 52 is moved in the longitudinal direction.

Furthermore, a wire guide 54 is provided on the vehicle rear side of the frame 32. A wire guide groove 56 is formed in the wire guide 54. The wire guide groove 56 is opened on the inner surface of the wire guide 54 in the vehicle width direction. A cover plate 58 is provided on the inner side in the vehicle width direction of the wire guide 54, and the wire guide groove 56 of the wire guide 54 is closed from the inner side in the vehicle width direction by the cover plate 58.

In addition, one end in the longitudinal direction of the wire guide groove 56 is opened at the vehicle front side surface of the wire guide 54, and the wire guide groove 56 is curved in an axial direction at the middle portion in the longitudinal direction with the vehicle width direction as an axial direction. The other end of the wire guide groove 56 in the longitudinal direction is opened on the upper surface of the wire guide 54 in the vehicle. A wire rope 52 is passed through the wire guide groove 56, and the wire rope 52 follows the wire guide groove 56 of the wire guide 54 and has an axial direction in which the vehicle width direction (the width direction of the seat 26) is the axial direction. Is bent. Furthermore, the front end side in the longitudinal direction of the wire rope 52 extends obliquely upward in front of the vehicle (arrow A direction side in FIG. 2 and the like) from the opening on the vehicle upper side surface of the wire guide 54.

On the other hand, the buckle device 10 includes an outer cover 60 constituting a buckle body as a moving member and a cover member. The cover longitudinal direction (the arrow A direction and the arrow B direction in FIG. 2 and the like) that is the longitudinal direction of the outer cover 60 is a direction inclined in the vehicle front-rear direction with respect to the vehicle vertical direction. The outer cover 60 has a cylindrical shape, and both ends of the outer cover 60 in the longitudinal direction of the cover are opened. Furthermore, the cross-sectional shape of the outer cover 60 cut in a direction orthogonal to the cover longitudinal direction of the outer cover 60 is substantially rectangular, and the cover thickness direction (the arrow in FIG. E direction and arrow D direction) are substantially vehicle width directions.

Further, as shown in FIG. 2, a buckle 62 that constitutes a buckle body together with the outer cover 60 is provided in an upper portion of the vehicle in the outer cover 60. The buckle 62 includes a buckle body 64. The buckle body 64 is formed in a U-shaped cross section that is opened inward in the vehicle width direction by a metal plate material such as iron, and is held by the outer cover 60. Inside the buckle body 64, components of the buckle 62 such as a latch (not shown in FIG. 2) are provided.

In a state where the webbing 20 is hung on the body of the occupant 66 seated on the seat 26, the above-described tongue 28 is attached to the buckle body 64 from the opening on the diagonally upper front side of the outer cover 60 (arrow A direction side in FIG. 2 and the like). When inserted inside, the latch provided on the buckle body 64 enters the hole formed in the tongue 28, whereby the tongue 28 is engaged with the buckle 62, and the webbing 20 on the body of the occupant 66 is It is put on.

Further, the buckle device 10 includes an inner cover 68 constituting a buckle moving part as a guide member. The inner cover 68 is made of a synthetic resin material that is more flexible than the outer cover 60. The longitudinal direction of the inner cover 68 is the cover longitudinal direction (arrow A direction and arrow B direction in FIG. 2 and the like). The inner cover 68 is formed in a cylindrical shape, and both ends of the inner cover 68 in the longitudinal direction of the cover are opened.

Further, the cross-sectional shape of the inner cover 68 cut in a direction orthogonal to the longitudinal direction of the inner cover 68 is substantially rectangular, and the thickness direction of the inner cover 68 is the cover thickness direction (arrow E in FIG. Direction and arrow F direction). The inner cover 68 is inserted into the outer cover 60 from the other end in the cover longitudinal direction of the outer cover 60 (the end in the direction of arrow B in FIG. 2). The inner cover 68 is disposed on the vehicle upper side of the wire guide 54, and the end of the inner cover 68 on the other side in the cover longitudinal direction is opposed to the vehicle upper side surface of the wire guide 54. The end of the inner cover 68 on the other side in the cover longitudinal direction is connected to the above-described cover plate 58 and is connected to the above-described frame 32 together with the cover plate 58.

On the other hand, a wire rope 52 passes through the inner cover 68. The distal end side in the longitudinal direction of the wire rope 52 extends from the one end in the cover longitudinal direction (the end in the arrow A direction in FIG. 2) of the inner cover 68 to the outside of the inner cover 68 and is connected to the buckle body 64. For this reason, when the wire rope 52 is moved to the front end side in the longitudinal direction and the front end portion in the longitudinal direction of the wire rope 52 is moved to the upper front side of the vehicle (arrow A direction side in FIG. 2 and the like), the buckle 62 is The vehicle is moved diagonally upward in front of the vehicle with the outer cover 60 (shown in FIG. 2). On the other hand, when the wire rope 52 is moved to the base end side in the longitudinal direction, the distal end portion in the longitudinal direction of the wire rope 52 is moved obliquely downward to the rear side of the vehicle (arrow B direction side in FIG. 2 and the like). The buckle 62 is moved obliquely downward to the rear of the vehicle with the outer cover 60 (the state shown in FIG. 1).

In addition, a pair of outer walls is provided in the cover longitudinal direction other side portion (the arrow B direction side portion in FIG. 2) than the middle portion of the inner cover 68 in the cover longitudinal direction (arrow A direction and arrow B direction in FIG. 2). 70 is provided (only one outer wall 70 is shown in FIG. 2). One outer wall 70 is disposed on one side in the cover thickness direction (the arrow E direction side in FIG. 4) on the other side end in the cover width direction (the arrow D direction side end in FIG. 2) of the inner cover 68. 68 extends to the other side in the cover width direction. On the other hand, the other outer wall 70 is disposed on the other side in the cover thickness direction (the end in the arrow D direction in FIG. 2) of the inner cover 68 in the cover thickness direction (the arrow F direction side in FIG. 4). It extends from the inner cover 68 to the other side in the cover width direction.

Between the both outer walls 70, a belt-like curl cord 72 is provided as an electrical connection member. The curl cord 72 includes a plurality of electric wires. These electric wires are formed in a long string shape by a conductive member such as a metal, and each of these electric wires is covered with an insulating material such as a synthetic resin material. These electric wires are further covered with a synthetic resin material in a state of being arranged in the width direction of the curl cord 72. The longitudinal direction base end portion of each electric wire of the curl cord 72 is directly or indirectly connected to the ECU 44 or the battery 46 shown in FIG. Further, the curl cord 72 has a spiral shape with one side in the thickness direction as a central axis, and the curl cord 72 can be expanded and contracted in the direction of the central axis of the spiral.

Among the plurality of wires constituting the curl cord 72, at least one of the wires in the longitudinal direction is electrically connected to the buckle switch 74 (see FIG. 5). The buckle switch 74 is provided inside the outer cover 60. When the tongue 28 enters the outer cover 60 and is engaged with the buckle 62, the buckle switch 74 is turned on, and the tongue 28, the buckle 62, When the tongue is released and the tongue 28 comes out of the outer cover 60, the buckle switch 74 is turned off. As shown in FIG. 5, the buckle switch 74 is electrically connected to the ECU 44 via the electric wire of the curl cord 72, and the ECU 44 determines the state of the buckle switch 74.

Further, as shown in FIG. 5, the ECU 44 is electrically connected to the load sensor 76. The load sensor 76 is provided on the seat cushion 78 of the seat 26 shown in FIG. 1, and the load from the upper side of the vehicle acting on the seat cushion 78 is detected by the load sensor 76. When a load from the upper side of the vehicle of a certain size or more is detected by the load sensor 76 by the occupant 66 sitting on the seat 26, the load detection signal output from the load sensor 76 is switched from the Low level to the High level. Change. The load detection signal output from the load sensor 76 is input to the ECU 44, and the high level load detection signal is input to the ECU 44, whereby the ECU 44 determines that the occupant is seated on the seat 26.

Further, as shown in FIG. 5, the ECU 44 is electrically connected to a warning device 80 as a warning unit. For example, when the load detection signal output from the load sensor 76 is at a high level and the vehicle travels with the above-described buckle switch 74 in the OFF state, the warning device 80 is activated by the ECU 44, thereby A warning lamp provided on the instrument panel blinks or a warning sound is emitted from a speaker constituting the warning device. As a result, the occupant 66 is warned that the vehicle has traveled in a state where the webbing 20 is not attached to the body of the occupant 66.

On the other hand, as shown in FIG. 2, the buckle device 10 includes an opening / closing device 82 as an opening portion. As shown in FIGS. 2 and 3, the opening / closing device 82 includes a first winding shaft 84. The first winding shaft 84 is provided in the middle part of the cover longitudinal direction (the direction of arrow A and the direction of arrow B in FIG. 2 and the like) inside the outer cover 60. The first winding shaft 84 is disposed on the other side in the cover width direction of the buckle body 64 of the buckle 62 (the arrow D direction side in FIG. 2). The central axis direction of the first winding shaft 84 is along the cover thickness direction (the direction of arrow E and arrow F in FIG. 3), and the first winding shaft 84 is rotatable around the central axis. At the same time, it is urged in one direction around the central axis (in the direction of arrow G in FIG. 3) by a first urging member (not shown) such as a mainspring spring or a torsion coil spring.

The opening / closing device 82 includes a pair of one-side wires 86. The longitudinal direction proximal end of one one-side wire 86 is locked to one side in the cover thickness direction (the arrow E direction side in FIG. 3 and the like) of the first winding shaft 84, and the other one-side wire 86 The base end in the longitudinal direction is locked to the other side of the first winding shaft 84 in the cover thickness direction (the arrow F direction side in FIG. 3 and the like). A closing member 88 is provided on the distal end side in the longitudinal direction of these one side wires 86. The closing member 88 is formed in a substantially rectangular sheet shape, and the width direction of the closing member 88 is along the cover thickness direction (the arrow E direction and the arrow F direction in FIG. 3 and the like). One longitudinal end of one side wire 86 is locked to one side end in the width direction of the closing member 88 at one end in the longitudinal direction of the closing member 88, and one longitudinal end of the closing member 88 in the longitudinal direction. At the other end portion in the width direction of the closing member 88 in the portion, the distal end in the longitudinal direction of the other one-side wire 86 is locked.

On the other hand, as shown in FIGS. 2 and 3, the opening and closing device 82 includes a second winding shaft 90. The second winding shaft 90 is located at one end in the cover width direction (end in the arrow A direction in FIG. 2) on the inner side of the inner cover 68 (in the arrow C direction in FIG. 2). End). The center axis direction of the second winding shaft 90 is along the cover thickness direction (the arrow E direction and the arrow F direction in FIG. 3 and the like), and the second winding shaft 90 is rotatable around the center axis. And the other in the direction around the central axis (in the direction of arrow H in FIG. 3) by a second urging member (not shown) having a smaller urging force than the urging force of the first urging member, such as a mainspring spring or a torsion coil spring. ).

The opening / closing device 82 includes a pair of other-side wires 92. The longitudinal base end of one other side wire 92 is locked to a portion of the second winding shaft 90 on one side in the cover thickness direction (arrow E direction side in FIG. 3 and the like), and the other side wire 92 on the other side. Is locked to the other side of the second winding shaft 90 in the cover thickness direction (the arrow F direction side in FIG. 3 and the like). Further, the distal end in the longitudinal direction of one other side wire 92 is locked to the one end portion in the width direction of the closing member 88 at the other end portion in the longitudinal direction of the closing member 88, and the longitudinal direction of the other side wire 92 in the other side. The front end in the direction is locked to the other end portion in the width direction of the closing member 88 at the other end portion in the longitudinal direction of the closing member 88.

Further, as shown in FIG. 2, the opening / closing device 82 includes a first vertical pulley 94 and a second vertical pulley 96. The central axis directions of the first vertical pulley 94 and the second vertical pulley 96 are the cover thickness directions (the arrow E direction and the arrow F direction in FIGS. 3 and 4, etc.). The second vertical pulley 96 is rotatable around its own central axis.

The first vertical pulley 94 has a cover width direction other side end (an arrow in FIG. 2, etc.) of a cover longitudinal direction one side end (an arrow A direction side end in FIG. 2) of the outer cover 60 inside the outer cover 60. The end of the closing member 88 in the longitudinal direction or the longitudinal end of the one-side wire 86 is wound around the first vertical pulley 94. The second vertical pulley 96 is provided at one end portion in the cover width direction (the end portion in the arrow C direction in FIG. 2 and the like) of the cover longitudinal direction one end portion of the outer cover 60 inside the outer cover 60. The other end portion in the longitudinal direction of the closing member 88 or the front end portion in the longitudinal direction of the other wire 92 is wound around the second vertical pulley 96.

In the state before the outer cover 60 is moved obliquely upward in front of the vehicle (arrow A direction side in FIG. 2 and the like), as shown in FIG. 4A, the closing member 88 is one side in the cover longitudinal direction of the outer cover 60 ( The other side in the cover thickness direction of the release button 100 provided on the inner side of the outer cover 60 on the other side in the cover longitudinal direction (the arrow B direction side in FIG. 2) than the opening in the arrow A direction side in FIG. 4A and the like in the direction of arrow F). Thereby, the cover thickness direction other side part than the release button 100 in the opening part of the cover longitudinal direction one side of the outer cover 60 is closed by the closing member 88.

In this state, when the other side wire 92 is pulled toward the longitudinal base end side, the closing member 88 is moved together with the other side wire 92 to the longitudinal base end side of the other side wire 92. As shown in FIG. 4B, in a state where one end in the longitudinal direction of the closing member 88 is moved to the second winding shaft 90 side rather than the second vertical pulley 96, one one-side wire 86 is in the release button 100. It is disposed along the other end in the cover thickness direction (the end in the direction of arrow F in FIG. 4B), and the other one-side wire 86 is on the one side in the cover longitudinal direction of the outer cover 60 (in the direction of arrow A in FIG. 2). It arrange | positions along the cover thickness direction other side end of an opening part. In this state, the other side portion in the cover thickness direction is opened more than the release button 100 in the opening on one side in the cover longitudinal direction of the outer cover 60, and the tongue 28 has one one-side wire 86 and the other one-side wire 86. Can enter the inside of the outer cover 60.

<Operation and Effect of First Embodiment>
Next, the operation and effect of the present embodiment will be described.

In this embodiment, for example, when the door of the vehicle corresponding to the seat 26 to which the buckle device 10 is applied changes from the closed state to the open state, the courtesy switch 48 is switched from the OFF state to the ON state. When it is determined in the ECU 44 that the courtesy switch 48 is switched from the OFF state to the ON state, the motor driver 42 is operated by the ECU 44, whereby the motor 40 of the motor actuator 38 is driven.

Thus, when the drive screw 36 is rotated, the slider 50 is guided by the guide walls 34 of the frame 32 and slid to the rear side of the vehicle. As a result, when the wire rope 52 is moved to the front end side in the longitudinal direction, the buckle body 64 is pressed diagonally upward (in the direction of arrow A in FIG. 2) by the wire rope 52. When the pressing force from the wire rope 52 is transmitted to the outer cover 60 via the buckle body 64, the outer cover 60 is guided to the inner cover 68 and moved together with the buckle body 64 diagonally upward in front of the vehicle (shown in FIG. 2). Status).

As described above, when the outer cover 60 is moved obliquely upward in front of the vehicle (in the direction of arrow A in FIG. 2 and the like), the second vertical pulley 96 inside the outer cover 60 is moved to the second winding inside the inner cover 68. It leaves | separates from the axis | shaft 90 to the vehicle front diagonally upper side. For this reason, with the movement of the outer cover 60 obliquely upward in the front of the vehicle, the closing member 88 passes by the side of the outer peripheral portion of the second vertical pulley 96, and the second vertical pulley 96 and the second winding shaft 90 It is moved toward between. In addition, the movement of the closing member 88 causes the one-side wire 86 to be drawn from the first winding shaft 84.

When the movement of the outer cover 60 obliquely upward in front of the vehicle (in the direction of arrow A in FIG. 2) is completed as described above, the one end in the longitudinal direction of the closing member 88 is moved as shown in FIG. 4B. It is arranged between the second vertical pulley 96 and the second winding shaft 90. Further, in this state, one one-side wire 86 is disposed along the other end in the cover thickness direction of the release button 100 (the end in the arrow F direction in FIG. 4B), and the other one-side wire 86 is the outer cover 60. Is disposed along the other end in the cover thickness direction of the opening on one side in the cover longitudinal direction (arrow A direction side in FIG. 2 and the like). For this reason, in this state, the cover thickness direction other side part is open | released rather than the release button 100 in the opening part of the cover longitudinal direction one side of the outer side cover 60. FIG. Accordingly, in this state, the tongue 28 can enter between the one side wire 86 and the other side wire 86 and enter the inside of the outer cover 60, and the tongue 28 is engaged with the buckle 62. be able to.

Further, in this manner, in the state where the movement of the outer cover 60 to the upper obliquely upper side of the vehicle (in the direction of arrow A in FIG. 2 and the like) is finished, the upper obliquely upper side of the vehicle is more than the state before the outer cover 60 is moved. Therefore, the occupant 66 can insert the tongue 28 into the inside of the outer cover 60 from the opening on one side in the cover longitudinal direction of the outer cover 60 (arrow A direction side in FIG. 2 and the like). It can be easily engaged. Thus, the occupant 66 can easily wear the webbing 20.

Thus, when the tongue 28 is engaged with the buckle 62, the buckle switch 74 is turned on. When the ECU 44 determines that the buckle switch 74 has been turned on, the motor driver 42 is actuated by the ECU 44, whereby the motor 40 of the motor actuator 38 is driven.

Thus, when the drive screw 36 is rotated, the slider 50 is guided by the guide walls 34 of the frame 32 and slid to the front side of the vehicle. Accordingly, when the wire rope 52 is moved to the longitudinal base end side, the buckle body 64 is pulled by the wire rope 52 obliquely downward to the rear of the vehicle. As a result, the outer cover 60 is guided by the inner cover 68 and moved together with the buckle body 64 diagonally downward (in the direction of arrow B in FIGS. 1 and 2) (the state shown in FIG. 1). By such movement of the outer cover 60 obliquely downward to the rear of the vehicle, the outer cover 60 returns to the position before being moved obliquely upward to the front of the vehicle (arrow A direction side in FIG. 1 and the like). The webbing 20 is put on the body.

In this way, when the outer cover 60 is moved obliquely downward (in the direction of arrow B in FIGS. 1 and 2) to the rear of the vehicle, the second vertical pulley 96 in the outer cover 60 is moved into the first position in the inner cover 68. 2 Approaches the winding shaft 90. As a result, when the closing member 88, the one side wire 86, and the other side wire 92 are loosened between the second vertical pulley 96 and the second winding shaft 90, the first winding shaft 84 is attached to the first urging member. The one-side wire 86 is wound around the first winding shaft 84 from the longitudinal base end side by being rotated by the force. As a result, the longitudinal ends of the closing member 88 and the other side wire 92 are moved together with the one side wire 86.

Incidentally, in this state, the tongue 28 is inserted into the outer cover 60. For this reason, when the outer cover 60 is moved obliquely downward on the rear side of the vehicle, the closing member 88 is moved, and when one end in the longitudinal direction of the closing member 88 comes into contact with the tongue 28, the closing member 88 is Thus, it cannot move to the first vertical pulley 94 side. For this reason, when the outer cover 60 is moved obliquely downward (rearward in the direction of arrow B in FIGS. 1 and 2) with the one longitudinal end of the closing member 88 in contact with the tongue 28, the closing member 88 is closed. The member 88 and the other wire 92 are slackened.

Here, the second winding shaft 90 is rotated around the center axis by the second biasing member having a smaller biasing force than the first biasing member biasing the first winding shaft 84 (in the direction of arrow H in FIG. 3). ). For this reason, the second winding shaft 90 is rotated by the urging force of the second urging member in response to the occurrence of slack in the closing member 88 and the other side wire 92, whereby the other side wire 92 is moved in the longitudinal direction proximal end side. To the second take-up shaft 90. Thereby, the occurrence of slack in the closing member 88 and the other-side wire 92 can be suppressed.

In this state, when the release button 100 is pressed and the release button 100 is moved to the inside of the outer cover 60, the engagement between the tongue 28 and the buckle 62 is released, and the tongue 28 comes out of the outer cover 60. Thereby, the contact between the one end in the longitudinal direction of the closing member 88 and the tongue 28 is eliminated. Here, the biasing force of the first biasing member that biases the first winding shaft 84 is greater than the biasing force of the second biasing member that biases the second winding shaft 90. For this reason, when the contact between the one end in the longitudinal direction of the closing member 88 and the tongue 28 is eliminated, the first winding shaft 84 is rotated by the urging force of the first urging member, and the one-side wire 86 is moved in the longitudinal direction. The first winding shaft 84 is wound from the proximal end side, and the closing member 88 is moved together with the one-side wire 86.

As a result, as shown in FIG. 4A, the cover thickness direction other side (arrow in FIG. 4A) than the release button 100 in the opening on one side in the cover longitudinal direction of the outer cover 60 (arrow A direction side in FIG. 2 and the like). The F direction side portion is closed by the closing member 88. As a result, for example, the outer cover 60 is moved outward from the opening on one side in the cover longitudinal direction of the outer cover 60 in a state where the outer cover 60 is returned to the arrangement position before the vehicle is moved obliquely upward (in the direction of arrow A in FIG. 1 and the like). It is possible to prevent foreign matter from entering the inside of the cover 60 and thus the inside of the buckle 62.

Further, in the buckle device 10, when the movement of the outer cover 60 obliquely upward (in the direction of arrow A in FIG. 2) in the front of the vehicle is finished, the one longitudinal end of the closing member 88 is the second vertical pulley. 96 and the second winding shaft 90. For this reason, when the tongue 28 is inserted inside the outer cover 60, it is possible to suppress the closing member 88 from being pressed by the tongue 28. Therefore, it is not necessary to make the mechanical strength of the closing member 88 large enough to withstand repeated pressing by the tongue 28. Thereby, the high strength of the closing member 88 can be suppressed, and the weight of the closing member 88 can be reduced.

Furthermore, in the present embodiment, since the closing member 88 is moved by moving the outer cover 60, a special operation for moving the closing member 88 is not necessary.

In the present embodiment, the closing member 88 is moved by the movement of the outer cover 60, the urging force of the first urging member, and the urging force of the second urging member. For this reason, a motor or the like only for moving the closing member 88 is not necessary, and control only for moving the closing member 88 (that is, control of the operation of the opening / closing device 82) is unnecessary.

<Configuration of Second Embodiment>
As shown in FIG. 6, in the second embodiment, the opening / closing device 82 includes a swing plate 112 as a closing member instead of the closing member 88. The swing plate 112 is formed between an opening on one side in the cover longitudinal direction of the outer cover 60 (in the direction of arrow A in FIG. 6) inside the outer cover 60 and one end in the cover longitudinal direction of the buckle body 64 of the buckle 62. An opening direction (FIG. 6) around the central axis with the cover width direction (the arrow C direction and the arrow D direction in FIG. 2, etc., the front side and the depth direction in FIG. 6) as the central axis direction. In the direction of arrow K) and in the closing direction (in the direction of arrow L in FIG. 6).

Further, the swinging plate 112 is rotated in the opening direction (in the direction of the arrow K in FIG. 6) from the open position of the swinging plate 112 indicated by the phantom line (two-dot chain line) in FIG. 6 and indicated by the solid line in FIG. The pivoting of the swinging plate 112 in the closing direction (in the direction of arrow L in FIG. 6) is restricted from the closed position of the swinging plate 112 to be moved. Further, the swing plate 112 is provided with a swing plate urging member (not shown) as a lid urging portion. The swing plate urging member is constituted by a torsion coil spring or the like, and the swing plate 112 is urged in the closing direction by the urging force of the swing plate urging member.

The rocking plate 112 is engaged with the distal end of the first wire 114 in the longitudinal direction. When the first wire 114 is moved to the proximal side in the longitudinal direction, the rocking plate 112 is pulled by the first wire 114. And rotated in the opening direction (arrow K direction in FIG. 6). In addition, on the other side in the cover thickness direction (the arrow B direction side in FIG. 6) on the other side in the cover longitudinal direction (the arrow B direction side in FIG. 6) inside the outer cover 60, the first lateral A pulley 116 is provided. The first horizontal pulley 116 is rotatable about a central axis with the cover width direction (in the direction of arrow C and arrow D in FIG. 2 and the front direction and the depth direction in FIG. 6) as the central axis direction. The first horizontal pulley 116 is wound around the intermediate portion in the longitudinal direction of the first wire 114.

Further, a tension coil spring 118 as a stroke difference absorbing portion is provided on the other side in the cover thickness direction of the buckle body 64 of the buckle 62 inside the outer cover 60 (the arrow F direction side in FIG. 6). The longitudinal direction of the tension coil spring 118 is generally along the cover longitudinal direction (the arrow A direction and the arrow B direction in FIG. 6), and the first wire 114 is disposed at one end in the longitudinal direction of the tension coil spring 118. The longitudinal base end is locked. The urging force at the time of elastic deformation of the tension coil spring 118 is larger than the urging force of the swing plate urging member.

The other end portion in the longitudinal direction of the tension coil spring 118 is arranged on the other side in the cover longitudinal direction (the arrow B direction side in FIG. 6) than the one end portion in the longitudinal direction. The end of the second wire 120 in the longitudinal direction is locked to the end. A second horizontal pulley 122 is provided on the other side in the cover longitudinal direction from the longitudinal tip of the second wire 120. The second horizontal pulley 122 is rotatable around the central axis with the cover width direction (the arrow C direction and arrow D direction in FIG. 2 and the like, the front side and the depth direction in FIG. 6) as the central axis direction. The middle portion of the second wire 120 in the longitudinal direction is hung on the second horizontal pulley 122. The other end of the second wire 120 in the longitudinal direction is locked to the end of the inner cover 68 on one side in the cover longitudinal direction (the direction of arrow A in FIG. 6).

<Operation and Effect of Second Embodiment>
Next, the operation and effect of the present embodiment will be described.

In the present embodiment configured as described above, when the vehicle door is changed from the closed state to the open state, the buckle driving device 30 is operated, and the motor 40 of the motor actuator 38 is driven. Is moved to the upper front side of the vehicle (in the direction of arrow A in FIG. 6) (see FIG. 6).

As described above, when the outer cover 60 is moved obliquely upward in front of the vehicle (in the direction of arrow A in FIG. 6), the second horizontal pulley 122 inside the outer cover 60 is moved to one side in the cover longitudinal direction of the inner cover 68 (see FIG. 6 in the direction of arrow A in FIG. As a result, the tension between the longitudinal end of the first wire 114 and the longitudinal end of the second wire 120 is increased. The urging force at the time of elastic deformation of the tension coil spring 118 between the first wire 114 and the second wire 120 is an oscillating plate urging member that urges the oscillating plate 112 in the closing direction (arrow L direction in FIG. 6). Greater than the energizing power of

For this reason, the tension between the longitudinal end of the first wire 114 and the longitudinal end of the second wire 120 increases as the outer cover 60 moves obliquely upward (in the direction of arrow A in FIG. 6). First, the swing plate 112 is pulled by the first wire 114 and rotated in the opening direction (the direction of arrow K in FIG. 6). When the outer cover 60 is moved until the movement of the swinging plate 112 in the opening direction is restricted, and when the outer cover 60 is further moved obliquely upward in the front of the vehicle from this state, one side end in the longitudinal direction of the tension coil spring 118 The portion is elastically deformed so as to be separated from the other end portion in the longitudinal direction.

As described above, in the present embodiment, the outer cover 60 is moved from the position before the outer cover 60 is moved to the upper front side of the vehicle (in the direction of arrow A in FIG. 6) to the position where the movement to the upper front side of the vehicle is finished. The difference between the movement stroke of 60 and the movement stroke of the first wire 114 required to rotate the swing plate 112 from the closed position to the open position is absorbed by the elastic deformation of the tension coil spring 118. As a result, the outer cover 60 can move obliquely upward in the front of the vehicle even when the pivoting of the swing plate 112 in the opening direction (the direction of the arrow K in FIG. 6) is restricted.

In a state where the movement of the outer cover 60 obliquely upward in front of the vehicle (arrow A direction side in FIG. 6) has been completed, the outer cover 60 has been moved in the opening direction (arrow K direction in FIG. 6). The cover thickness direction other side part (arrow F direction side part of FIG. 6) is opened rather than the release button 100 in the opening part of the cover 60 in the cover longitudinal direction (arrow A direction side of FIG. 6). Therefore, in this state, the tongue 28 can enter the inside of the outer cover 60, and the tongue 28 can be engaged with the buckle 62.

Further, in this manner, in a state where the movement of the outer cover 60 toward the upper front side of the vehicle (in the direction of arrow A in FIG. 6) has been completed, the upper front side of the vehicle is inclined more than the state before the outer cover 60 is moved. Therefore, the occupant 66 can insert the tongue 28 into the inner side of the outer cover 60 from the opening on one side in the cover longitudinal direction of the outer cover 60 (arrow A direction side in FIG. 6). Can be engaged. Thus, the occupant 66 can easily wear the webbing 20.

On the other hand, when the tongue 28 is engaged with the buckle 62, the motor driver 42 is actuated by the ECU 44, whereby when the motor 40 of the motor actuator 38 is driven, the drive screw 36 is rotated and the slider 50 is moved to the frame 32. Are guided by both guide walls 34 and slid toward the vehicle front side. As a result, the outer cover 60 is moved obliquely downward to the rear of the vehicle, and the outer cover 60 returns to the arrangement position before being moved obliquely upward (in the direction of arrow A in FIG. 6) to the front of the vehicle. The webbing 20 is attached.

Thus, when the outer cover 60 is moved obliquely downward on the rear side of the vehicle, the tension between the longitudinal end of the first wire 114 and the longitudinal end of the second wire 120 is reduced. Since the urging force at the time of elastic deformation of the tension coil spring 118 is larger than the urging force of the swing plate urging member, it is between the longitudinal end of the first wire 114 and the longitudinal end of the second wire 120. First, the tension coil spring 118 is contracted by reducing the tension.

The tension coil spring 118 contracts to a natural length state, and from this state, the outer cover 60 is further moved obliquely downward to the rear of the vehicle, and one longitudinal end of the first wire 114 and the other longitudinal end of the second wire 120 are When the tension between them is reduced, the swinging plate 112 is rotated in the closing direction (in the direction of arrow L in FIG. 6) by the biasing force of the swinging plate biasing member until the swinging plate 112 contacts the tongue 28. Further, when the release button 100 is pressed while the swinging plate 112 is in contact with the tongue 28 and the release button 100 is moved to the inside of the outer cover 60, the engagement between the tongue 28 and the buckle 62 is released. The tongue 28 comes off from the outer cover 60.

Thereby, the contact between the swing plate 112 and the tongue 28 is eliminated, and the swing plate 112 is rotated to the closed position by the biasing force of the swing plate biasing member. Thereby, for example, the cover 1 side in the longitudinal direction of the outer cover 60 (the arrow in FIG. 6) in a state where the outer cover 60 has returned to the position before the vehicle is moved obliquely upward (in the direction of arrow A in FIG. 1 and the like). It is possible to prevent foreign matter from entering the inside of the outer cover 60 and thus the inside of the buckle 62 from the opening in the A direction side).

In the buckle device 10, the swing plate 112 is rotated to the open position when the outer cover 60 has finished moving toward the upper front side of the vehicle (in the direction of arrow A in FIG. 6). For this reason, when the tongue 28 is inserted inside the outer cover 60, it is possible to suppress the swing plate 112 from being pressed by the tongue 28. Therefore, it is not necessary to make the mechanical strength of the rocking plate 112 large enough to withstand repeated pressing by the tongue 28. As a result, the strength of the swing plate 112 can be suppressed, and the swing plate 112 can be reduced in weight.

Further, in the present embodiment, when the swing plate 112 is pressed toward the open position with a force larger than the biasing force of the swing plate biasing member, the swing plate 112 is rotated toward the open position. The For this reason, even in a state where the outer cover 60 has not moved obliquely upward in front of the vehicle (in the direction of arrow A in FIG. 6), or in a state in which movement of the outer cover 60 obliquely upward in front of the vehicle has not been completed, The tongue 28 can be engaged with the buckle 62 by inserting the tongue 28 from the opening on one side in the cover longitudinal direction of the outer cover 60 (arrow A direction side in FIG. 6).

Furthermore, in this embodiment, since the swing plate 112 is rotated by moving the outer cover 60, a special operation for rotating the swing plate 112 is unnecessary.

In this embodiment, the swing plate 112 is moved by the movement of the outer cover 60 and the biasing force of the swing plate biasing member. For this reason, a motor or the like only for moving the swing plate 112 is not required, control for moving the swing plate 112 is not required, and control only for rotating the swing plate 112 (that is, control). , Control of the operation of the opening and closing device 82 is unnecessary.

Furthermore, in the present embodiment, the outer cover 60 is further tilted upward (in the direction of arrow A in FIG. 6) while the pivoting of the swing plate 112 in the opening direction (in the direction of arrow K in FIG. 6) is restricted. When it is moved to the side), the tension coil spring 118 is stretched (elastically deformed). Accordingly, the movement stroke of the first wire 114 required for the rotation of the swing plate 112 from the closed position to the open position can be made smaller than the movement stroke of the outer cover 60 obliquely upward in the front of the vehicle.

<Configuration of Third Embodiment>
As shown in FIG. 7, in the third embodiment, the opening / closing device 82 includes a solenoid 132 as a closing member driving unit. The solenoid 132 is disposed on the other side in the cover thickness direction of the buckle body 64 inside the outer cover 60 (the arrow F direction side in FIG. 7). The solenoid 132 includes a solenoid main body 134, and a coil is provided inside the solenoid main body 134. The central axis direction of the coil of the solenoid body 134 is generally the cover longitudinal direction (the direction of arrow A and the direction of arrow B in FIG. 7).

The solenoid 132 includes a plunger 136. The plunger 136 is formed in a rod shape by a magnetic material such as iron, and the longitudinal direction of the plunger 136 is generally the cover longitudinal direction (the arrow A direction and the arrow B direction in FIG. 7). The proximal end side in the longitudinal direction with respect to the intermediate portion in the longitudinal direction of the plunger 136 is disposed inside the coil in the solenoid body 134.

A plunger urging member (not shown) such as a compression coil spring is provided inside the solenoid body 134, and the plunger 136 is removed from the solenoid body 134 by the urging force of the plunger urging member, that is, the cover longitudinal direction. It is biased toward one direction (the direction of arrow A in FIG. 7). When a magnetic field is generated around the coil by energizing the coil in the solenoid body 134, a magnetic force is generated between the coil and the plunger 136, whereby the plunger 136 resists the biasing force of the plunger biasing member. Then, it is moved to the solenoid main body 134 side, that is, the other side in the cover longitudinal direction (the arrow B direction side in FIG. 7).

The longitudinal direction proximal end of the first wire 114 is locked to the longitudinal direction distal end portion of the plunger 136, and when the coil in the solenoid body 134 is energized, the plunger 136 is moved to the solenoid body 134 side. The first wire 114 is moved to the proximal side in the longitudinal direction by the plunger 136. As a result, the swing plate 112 is pulled by the first wire 114, and the swing plate 112 is rotated in the opening direction (the direction of arrow K in FIG. 7).

Further, as shown in FIG. 8, the solenoid 132 is electrically connected to the ECU 44 and the battery 46 via a solenoid driver 138, and the energization of the solenoid 132 to the coil in the solenoid body 134 is performed by the ECU 44 and the solenoid. It is controlled by the driver 138.

Further, as shown in FIG. 8, the ECU 44 is electrically connected to the rotation detection device 140. The rotation detection device 140 is provided in the webbing take-up device 14 (see FIG. 1), and the rotation detection device 140 detects the rotation and the rotation direction of the spool 18 of the webbing take-up device 14. The rotation detection device 140 outputs a rotation detection signal corresponding to the rotation and rotation direction of the spool 18, and the rotation detection signal output from the rotation detection device 140 is input to the ECU 44.

<Operation and Effect of Third Embodiment>
Next, the operation and effect of this embodiment will be described.

Note that the drive control of the motor 40 of the motor actuator 38, the movement of the outer cover 60 by the drive of the motor 40, and the like are the same as those in the first embodiment, and a description thereof will be omitted.

In the present embodiment configured as described above, when the webbing 20 is pulled by the occupant 66 seated on the seat 26 and the webbing 20 is pulled out from the spool 18 of the webbing take-up device 14, the spool 18 is rotated in the pull-out direction. The The rotation of the spool 18 in the pull-out direction is detected by the rotation detection device 140, and a rotation detection signal corresponding to the rotation of the spool 18 in the pull-out direction is output from the rotation detection device 140.

When this rotation detection signal is input to the ECU 44, the ECU 44 determines that the webbing 20 has been pulled out from the spool 18, and the solenoid driver 138 is operated by the ECU 44. Accordingly, when the coil in the solenoid main body 134 of the solenoid 132 is energized, the plunger 136 is moved to the solenoid main body 134 side, and the first wire 114 is moved to the longitudinal base end side. As a result, the swing plate 112 is rotated in the opening direction (in the direction of arrow K in FIG. 7), and more than the release button 100 in the opening on the one side in the cover longitudinal direction (in the direction of arrow A in FIG. 7). The cover thickness direction other side part (arrow F direction side part of FIG. 7) is open | released. Therefore, in this state, the tongue 28 can enter the inside of the outer cover 60, and the tongue 28 can be engaged with the buckle 62.

Further, when the tongue 28 is engaged with the buckle 62, the buckle switch 74 is switched from the OFF state to the ON state. When the ECU 44 determines that the buckle switch 74 has been turned on, the solenoid driver 138 is operated by the ECU 44. Accordingly, when the energization of the solenoid 132 to the coil in the solenoid body 134 is canceled, the plunger 136 is removed from the solenoid body 134 by the biasing force of the plunger biasing member, that is, one side in the cover longitudinal direction (FIG. 7). Arrow A direction side). Thus, when the pull of the first wire 114 by the plunger 136 is released, the swinging plate 112 is closed (in the direction of arrow L in FIG. 7 and the like) until it contacts the tongue 28 by the biasing force of the swinging plate biasing member. Is rotated.

Further, when the release button 100 is pressed while the swinging plate 112 is in contact with the tongue 28 and the release button 100 is moved to the inside of the outer cover 60, the engagement between the tongue 28 and the buckle 62 is released. The tongue 28 comes off from the outer cover 60. As a result, the contact between the swing plate 112 and the tongue 28 is eliminated, and the swing plate 112 is rotated to the closed position by the biasing force of the swing plate biasing member. Thereby, for example, the cover 1 side of the cover 60 in the longitudinal direction of the outer cover 60 (indicated by the arrow in FIG. 7) in a state where the outer cover 60 has returned to the position before the vehicle is moved obliquely upward (in the direction of arrow A in FIG. 1 and the like) It is possible to prevent foreign matter from entering the inside of the outer cover 60 and thus the inside of the buckle 62 from the opening in the A direction side).

Further, in the buckle device 10, when the coil in the solenoid body 134 of the solenoid 132 is energized, the plunger 136 is moved, whereby the swing plate 112 is rotated to the open position. For this reason, when the tongue 28 is inserted inside the outer cover 60, it is possible to suppress the swing plate 112 from being pressed by the tongue 28. Therefore, it is not necessary to make the mechanical strength of the rocking plate 112 large enough to withstand repeated pressing by the tongue 28. As a result, the strength of the swing plate 112 can be suppressed, and the swing plate 112 can be reduced in weight.

Further, in the present embodiment, when the swing plate 112 is pressed toward the open position with a force larger than the biasing force of the swing plate biasing member, the swing plate 112 is rotated toward the open position. The For this reason, even when the outer cover 60 is not moved to the upper front side of the vehicle (in the direction of arrow A in FIG. 7), the movement of the outer cover 60 to the upper front side of the vehicle is not completed, The tongue 28 can be engaged with the buckle 62 by inserting the tongue 28 from the opening on one side in the cover longitudinal direction of the outer cover 60 (arrow A direction side in FIG. 7).

In this embodiment, since the swing plate 112 is rotated by energizing the coil in the solenoid body 134 of the solenoid 132 and shutting off the energization, a special operation for rotating the swing plate 112 is performed. It is unnecessary.

<Fourth embodiment>
In the fourth embodiment, the coil in the solenoid body 134 of the solenoid 132 is energized when the occupant 66 is seated on the vehicle seat 26. That is, when a load from the upper side of the vehicle of a certain size or more is detected by the load sensor 76 by the occupant 66 sitting on the seat 26 of the vehicle, the load detection signal output from the load sensor 76 becomes low level. Switch to High level. When a high-level load detection signal is input to the ECU 44, the solenoid driver 138 is operated by the ECU 44.

Thus, when the coil in the solenoid body 134 of the solenoid 132 is energized, the plunger 136 is moved to the solenoid body 134 side, and the first wire 114 is moved to the longitudinal base end side. As a result, the swing plate 112 is rotated in the opening direction (in the direction of arrow K in FIG. 7), and more than the release button 100 in the opening on the one side in the cover longitudinal direction (in the direction of arrow A in FIG. 7). The cover thickness direction other side part (arrow B direction side part of FIG. 7) is open | released. Therefore, in this state, the tongue 28 can enter the inside of the outer cover 60, and the tongue 28 can be engaged with the buckle 62. Even if it is such a structure, the effect similar to the said 3rd Embodiment can be acquired.

Further, the load sensor 76 and the buckle switch 74 are configured to be used for controlling the warning device 80. Thus, by using the configuration used for controlling the warning device 80 for controlling the solenoid 132, an increase in the configuration used only for controlling the solenoid 132 can be suppressed, and the cost can be reduced.

<Fifth embodiment>
As shown in FIG. 9, in the fifth embodiment, the ECU 44 is electrically connected to a timer circuit 142 serving as a timer unit or a counting unit. The timer circuit 142 outputs a pulse signal having a constant period. The pulse signal output from the timer circuit 142 is input to the ECU 44. In the ECU 44, the pulse signal output from the timer circuit 142 is counted. For example, when the load detection signal output from the load sensor 76 is switched from the Low level to the High level and the High level load detection signal is input to the ECU 44, the ECU 44 outputs the pulse output from the timer circuit 142. Reset the signal count and restart the pulse signal count.

In the fifth embodiment configured as described above, the coil in the solenoid body 134 of the solenoid 132 is energized when the occupant 66 is seated on the seat 26 of the vehicle. That is, when a load from the upper side of the vehicle of a certain size or more is detected by the load sensor 76 by the occupant 66 sitting on the seat 26 of the vehicle, the load detection signal output from the load sensor 76 becomes low level. Switch to High level. When a high-level load detection signal is input to the ECU 44, the solenoid driver 138 is operated by the ECU 44.

On the other hand, when the load detection signal output from the load sensor 76 is switched from the Low level to the High level and the High level load detection signal is input to the ECU 44, the ECU 44 receives the pulse signal output from the timer circuit 142. The count is reset and the pulse signal count is restarted. When the count of the pulse signal in the ECU 44 exceeds a certain number (that is, when a certain time has elapsed since the coil in the solenoid body 134 of the solenoid 132 is energized), the solenoid driver 138 is operated by the ECU 44. As a result, the energization of the coil in the solenoid body 134 of the solenoid 132 is released.

When the energization of the coil in the solenoid body 134 of the solenoid 132 is released, the plunger 136 of the solenoid 132 is moved to one side in the cover longitudinal direction (the arrow A direction side in FIG. 7) by the urging force of the plunger urging member of the solenoid body 134. ). Thus, when the pull of the first wire 114 by the plunger 136 is released, the swing plate 112 is rotated in the closing direction (the direction of arrow L in FIG. 7) by the biasing force of the swing plate biasing member. As a result, the cover thickness direction other side portion (the arrow F direction side portion in FIG. 7) swings relative to the release button 100 in the opening on the one side in the cover longitudinal direction (arrow A direction side in FIG. 7) of the outer cover 60. Closed by plate 112.

As described above, in the present embodiment, the coil in the solenoid body 134 of the solenoid 132 is energized and the swing plate 112 is moved in the opening direction (the direction of the arrow K in FIG. 7), so that the cover of the outer cover 60 is covered. When a certain time elapses after the cover thickness direction other side part (arrow F direction side part in FIG. 7) is opened than the release button 100 in the opening part on the one side in the longitudinal direction (arrow A direction side in FIG. 7), The other portion in the cover thickness direction than the release button 100 (the portion in the direction of arrow F in FIG. 7) in the opening on the one side in the cover longitudinal direction of the outer cover 60 is closed by the swing plate 112. For this reason, it can suppress that the open state of the cover thickness direction other side part becomes longer than the release button 100 in the opening part of the cover longitudinal direction one side of the outer side cover 60. FIG. Accordingly, it is possible to prevent foreign matter from entering the inside of the outer cover 60 and thus the inside of the buckle 62 from the opening on the one side in the cover longitudinal direction of the outer cover 60.

In the fifth embodiment, when the count of the pulse signal in the ECU 44 is equal to or greater than a certain number, the release button at the opening on one side in the cover longitudinal direction of the outer cover 60 (arrow A direction side in FIG. 7). The other part in the cover thickness direction than 100 (the part in the direction of arrow F in FIG. 7) is closed by the swing plate 112. However, for example, when the count of the pulse signal in the ECU 44 becomes a certain number or more, even when the buckle switch 74 is in the OFF state, the motor driver 42 is operated by the ECU 44, whereby the motor 40 of the motor actuator 38 is driven. Then, the outer cover 60 may be configured to be moved obliquely downward on the rear side of the vehicle (in the direction of arrow B in FIGS. 1 and 2).

Further, with such a configuration, when the count of the pulse signal in the ECU 44 becomes a certain number or more, the release button 100 at the opening portion on the one side in the cover longitudinal direction of the outer cover 60 (the arrow A direction side in FIG. 7). Alternatively, the cover thickness direction other side portion (the arrow F direction side portion in FIG. 7) may be closed by the swing plate 112. Further, when the count of the pulse signal in the ECU 44 becomes a certain number or more, the other side portion in the cover thickness direction may remain open rather than the release button 100 in the opening portion on the one side in the cover longitudinal direction of the outer cover 60. . Furthermore, after the outer cover 60 is moved obliquely downward (in the direction of arrow B in FIGS. 1 and 2) to the rear of the vehicle, the count of the pulse signal in the ECU 44 becomes equal to or greater than a predetermined number. A configuration in which the other side portion in the cover thickness direction than the release button 100 in the opening portion on the one side in the longitudinal direction may be closed by the swing plate 112 may be employed.

In the third to fifth embodiments, the solenoid 132 is applied as a closing member driving unit for rotating the swing plate 112 as a closing member to the open position. However, the closing member driving unit may be a motor, and the closing member driving unit is limited to a specific mode as long as the closing member driving unit can move the closing member by the output driving force. is not.

Further, in the second to fifth embodiments, the rotation direction to the open position of the swinging plate 112 as the closing member is the inside of the outer cover 60. However, for example, the movement of the swing plate 112 to the open position may be outside the opening of the outer cover 60 on one side in the cover longitudinal direction (the arrow A direction side in FIG. 2 and the like).

Further, in the second to fifth embodiments, the swinging plate 112 as the closing member is pressed against the biasing force of the swinging plate biasing member to open (see FIG. 6 (the direction of arrow K such as 6). However, in the closed position, the closing member may prevent the tongue 28 from being inserted into the outer cover 60.

Further, in each of the above embodiments, the buckle 62 is moved up and down by the outer cover 60 being guided and moved by the inner cover 68. However, the present invention may be applied to a configuration in which the buckle 62 is not moved up and down as described above. In each of the above embodiments, the outer cover 60 is guided by the inner cover 68 disposed inside the outer cover 60. The configuration was moved. However, the inner moving member may be guided and moved by the outer guiding member.

The entire disclosure of Japanese Patent Application No. 2016-230333 filed on November 28, 2016 is incorporated herein by reference.

Claims

A buckle body into which a tongue provided on a webbing of a vehicle seat belt device can be inserted;
A closing member provided on the buckle body and closing an insertion portion of the tongue in the buckle body;
An opening part that is provided in the buckle body and is moved to move the closing member to open an insertion part of the tongue in the buckle body;
A buckle device comprising:
2. The buckle device according to claim 1, further comprising a buckle moving unit that moves the buckle main body by being actuated, wherein the opening unit is interlocked with the operation of the buckle moving unit.
The buckle device according to claim 2, wherein the opening portion is mechanically interlocked with movement of the buckle body.
The buckle device according to any one of claims 1 to 3, wherein the opening portion is operated in conjunction with a passenger riding on the vehicle.
The buckle device according to any one of claims 1 to 4, wherein the opening portion is operated in conjunction with opening and closing of a vehicle door.
The buckle device according to any one of claims 1 to 4, wherein the opening portion is operated by a passenger sitting on a vehicle seat.
5. The opening portion is operated in conjunction with pulling out the webbing from a webbing storage portion that winds and stores the webbing from the longitudinal base end side of the webbing. The buckle device described.
When the closing member is moved by the operation of the opening portion and the insertion portion of the tongue in the buckle body is opened, a predetermined time elapses, so that the closing member becomes the insertion portion of the tongue in the buckle body. The buckle device according to any one of claims 1 to 7, wherein the buckle device is closed.
When the closing member closes the insertion portion of the tongue in the buckle body, the closing member receives a load in the insertion direction of the tongue on the buckle body, whereby the insertion portion of the tongue in the buckle body is The buckle device according to any one of claims 1 to 8, wherein the buckle device is movable in a moving direction when being opened.