JP2009214842A - Vehicular seat belt device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular seat belt device capable of saving a labor and shortening time for attachment and release of a seat belt. <P>SOLUTION: The device includes a first motor 30, a first connecting member 40, a second motor 50, and a second connecting member 60. Accordingly, belt attachment is possible by winding the first connecting member 40 by the first motor 30. Also, release of the belt attachment is possible by unwinding the first connecting member 40 by the first motor 30, and also by winding the second connecting member 60 by the second motor 50. Consequently, there is no necessity for an occupant to lock or unlock a tongue plate and a buckle, thus making it possible to save a labor for attachment or release of a belt. Further, the attachment of the belt can be released by using the first motor 30, the first connecting member 40, the second motor 50, and the second connecting member 60. Also, the attachment or release of the belt can be done by one step, thus making it possible to shorten time required for attachment or release of the belt. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

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

  In Patent Document 1, the occupant engages the buckle of the three-point seat belt and the tongue plate, and after the three-point seat belt is mounted, the two-point automatic belt is automatically mounted along the roof guide rail. X-type vehicle seatbelt where the two-point automatic belt is automatically released after the occupant releases the engagement of the three-point seatbelt buckle and the tongue plate to release the three-point seatbelt. An apparatus is disclosed.

However, the conventional vehicle seat belt device has the following problems.
Since the occupant has to wear and unmount the three-point seat belt device himself, it takes time to mount and demount. In addition, since the two-point automatic belt is automatically installed after the three-point seat belt is installed and the two-point automatic belt is automatically released after the three-point seat belt is released, it takes time to install and release the seat belt. It takes.
JP 2007-137177 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle seat belt device that can save time and effort for attaching and releasing seat belts as compared with the conventional art.

The present invention for achieving the above object is as follows.
(1) First and second shoulder belts that are X-shaped when viewed from the front-rear direction of the vehicle in front of the chest of the occupant when the belt is worn,
A lap belt configured by the same webbing as the webbing and connecting a lower end portion of the first shoulder belt portion and a lower end portion of the second shoulder belt portion when the belt is mounted;
A first motor disposed below an intersection of the first and second shoulder belts and the lap belt;
A first connecting member that connects the first motor and the intersection of the first and second shoulder belts and the lap belt;
A second motor provided on the roof of the vehicle;
A second connecting member that connects the second motor and the upper end of the first and second shoulder belts when the belt is mounted;
A vehicle seat belt apparatus comprising:
(2) The vehicle seat belt device according to (1), further including a biasing unit that biases the second connecting member forward of the vehicle.
(3) A first lever that can be elastically deformed in a direction orthogonal to the vehicle width direction and covering the first shoulder belt, and an elastically deformable in a direction orthogonal to the vehicle width direction and covering the second shoulder belt. A second lever;
A first guide which is provided on a vehicle roof on the vehicle rear side of a seat on which a passenger sits on the vehicle front side of the second motor and supports the first lever so as to be slidable in the vehicle front-rear direction; A second guide that is provided on the roof of the vehicle on the vehicle rear side of a seat on which a passenger sits on the vehicle front side of the motor 2 and supports the second lever slidably in the vehicle front-rear direction. ,
The vehicle seat belt device according to (1), wherein the first and second levers are connected to each other at an intersection of the first and second shoulder belts so as to be rotatable.
(4) In a state before the belt is mounted, the first and second shoulder belts and the lap belt are in a position above the occupant head,
When the belt is mounted, the second motor rewinds the second connecting member, and the first and second shoulder belts and the lap belt start moving forward of the vehicle, and then the first motor The first and second shoulder belts and the lap belt move downward by restraining the one connecting member to restrain the occupant,
When the belt is released, the first motor rewinds the first connecting member, and the second motor winds the second connecting member, whereby the first, second shoulder belts, and the lap belt. (1) The vehicle seat belt device according to (1).
(5) A slip joint is provided at each intersection of the first and second shoulder belt lower ends and the lap belt,
Before the belt is installed, the slip joint is located above the passenger head,
The vehicle seat belt device according to any one of (1) to (4), wherein the slip joint is positioned at a height equal to or lower than a passenger's waist when the belt is mounted.

According to the vehicle seat belt device of the above (1), the following effects can be obtained.
A first motor that connects the first motor, which is disposed below the intersection of the first and second shoulder belts and the lap belt, and the intersection of the first and second shoulder belts and the lap belt and the first motor. Therefore, when an occupant is seated with the ignition ON, the first motor is forwardly rotated and the first motor is wound up by the first motor. The shoulder belt and the lap belt can be moved downward, and the occupant can be restrained by the first and second shoulder belts and the lap belt (the belt can be attached).
The first motor disposed below the intersection of the first and second shoulder belts and the lap belt is connected to the intersection of the first and second shoulder belts and the lap belt with the first motor. A first connecting member, a second motor provided on the roof of the vehicle, and a second connecting member for connecting the upper ends of the first and second shoulder belts and the second motor when the belt is mounted. Therefore, when the vehicle speed becomes 0 (zero) and the shift lever is shift-changed to the P (parking) range, the first motor is reversely rotated and the first motor is rewound by the first motor. By winding up the second connecting member with the second motor together with the unwinding, the first and second shoulder belts and the lap belt can be moved upward from the occupant's head, and the belt mounting can be released.
In this structure, unlike the conventional case, it is not necessary for the occupant to engage and disengage the tongue plate and the buckle. Also, the belt can be mounted by winding the first connecting member with the first motor, and the first connecting member is rewound with the first motor and the second connecting member is wound with the second motor. Since the belt can be released, the belt can be attached and released in one step, and the two-point belt is attached and released after attaching and releasing the three-point belt as before. Compared to the case, the time required for attaching and releasing the belt can be shortened.

  According to the vehicle seat belt device of the above (2), since the second connecting member is further provided with an urging means for urging the second connecting member forward of the vehicle, the first motor is wound up by winding the first connecting member. 1. When the second shoulder belt and the lap belt are moved downward and worn, the chest of the occupant is compressed by the first and second shoulder belts, and the lap belt is sufficiently placed at the appropriate occupant waist position. Can be prevented from being placed on the screen.

According to the vehicle seat belt device of (3) above, the following effects can be obtained.
(I) Since the first lever for covering the first shoulder belt and the second lever for covering the second shoulder belt are provided, the rigidity of the first and second levers is configured by webbing. As compared with the case where the first and second levers are not provided, the first and second shoulder belts (webbing) are bent (crumpled) in the middle position. 1. When the second shoulder belt is viewed from the front-rear direction of the vehicle when the belt is mounted, the X-type first and second shoulder belts cannot restrain the occupant's chest instead of being X-shaped before the occupant's chest. Can be suppressed.
(Ii) Since the first lever for covering the first shoulder belt and the second lever for covering the second shoulder belt are provided, the first and second levers restrain the occupant's chest when the belt is worn. Can do. Therefore, the contact area between the vehicle seat belt device and the occupant's chest is wider than when the occupant's chest is restrained only by the first and second shoulder belts without the first and second levers. can do. Therefore, it is possible to distribute the force applied to the occupant's chest by the belt at the time of a vehicle collision.
(Iii) Further, the first and second levers can be elastically deformed in a direction perpendicular to the vehicle width direction, and on the vehicle roof on the vehicle rear side from the seat on which the occupant sits on the vehicle front side from the second motor. Since the first and second levers are provided to support the first and second levers so as to be slidable in the vehicle longitudinal direction, the first and second levers are connected to the second motor and the first and second levers. Attempts to maintain a posture extending in the vehicle front-rear direction along the roof of the vehicle between the two guides in the vehicle front-rear direction and the portions supported by the first and second guides. Therefore, when the first motor is wound up by the first motor and the first and second shoulder belts and the lap belt are moved downward, the first and second guides out of the first and second levers. The portion positioned on the vehicle front side from the portion supported by the vehicle is pulled downward and elastically deformed. Of the first and second levers, the portion supported by the first and second guides and the portion In order to maintain a posture in which the portion located on the vehicle rear side extends in the vehicle front-rear direction, the portion of the first and second levers supported by the first and second guides on the vehicle front side. The part located is going to rise upwards. Therefore, the feeling of pressure felt by the occupant when the belt is worn can be reduced.

  According to the vehicle seat belt device of (4) above, the first and second shoulder belts and the lap belt move to a position above the occupant head when the belt is released, so that when the occupant gets on and off the vehicle, It can suppress that the 1st, 2nd shoulder belt and lap belt become obstructive. In addition, since the first and second shoulder belts and the lap belt move to a position above the occupant head when the belt is released, the first and second shoulders are released from the interior space below the occupant's line of sight when the belt is released. The belt and the lap belt can be withdrawn, and the first and second shoulder belts and the lap belt can be prevented from entering the field of view and giving a complicated image to the occupant when the belt is released.

  According to the vehicle seat belt device of the above (5), the slip joint is provided at each intersection of the first and second shoulder belt lower ends and the lap belt. Therefore, it is possible to prevent the slip joint from entering the field of view before the belt is attached (when the belt is released) and giving the passenger a complicated image. In addition, when the belt is mounted, the slip joint is positioned at the same height as or below the occupant's waist, so that the lap belt can be sufficiently disposed at the appropriate occupant's waist position.

  1 to 7 show a vehicle seat belt device according to an embodiment of the present invention. In the figure, UP indicates the upper side, FR indicates the front in the vehicle front-rear direction, and OUT indicates the vehicle width direction outer side. Also, the belt actually has a width, but is shown as a single line for simplicity of the drawing and contacts the occupant on a wide surface.

  As shown in FIG. 1, a vehicle seat belt device (hereinafter also simply referred to as a seat belt device) 10 according to an embodiment of the present invention includes first and second shoulder belts 20 and 21, a lap belt 22, Motor 30, first connecting member 40, second motor 50, second connecting member 60, first lever 70 and second lever 71, first guide 80 and second And a guide 81.

  The first and second shoulder belts 20 and 21 are composed of the same webbing. The first and second shoulder belts 20 and 21 are provided to restrain the occupant P seated on the seat 1 from the front side of the vehicle.

  As shown in FIG. 3, the seat 1 includes a seat cushion 1a on which the occupant P is seated, a seat back 1b that is disposed at a vehicle rear side end portion of the seat cushion 1a and is used as a backrest of the occupant P, and a seat back 1b. And a headrest 1c that is provided at the top and supports the head of the passenger P from the vehicle rear side.

  As shown in FIG. 5, one of the first shoulder belt 20 and the second shoulder belt 21 has a vehicle width direction from the outside in the vehicle width direction and from above when the occupant P is wearing the belt (when the belt is worn). The other of the first shoulder belt 20 and the second shoulder belt 21 extends from the center side in the vehicle width direction and from the top to the outside in the vehicle width direction and below when the belt is mounted. Therefore, the first and second shoulder belts 20 and 21 are X-shaped when viewed from the front-rear direction of the vehicle in front of the chest of the occupant P when the belt is worn.

  The lap belt 22 is composed of the same webbing as the first and second shoulder belts 20 and 21. The lap belt 22 is provided to restrain the waist (the base of the thigh) of the occupant P seated on the seat 1. At least a part of the lap belt 22 may be covered with a cover (not shown) that is slidable with respect to the lap belt 22 in order to increase the contact area with the passenger P. The lap belt 22 connects the lower end portion of the first shoulder belt portion 20 and the lower end portion of the second shoulder belt portion 21 when the belt is mounted.

  The first and second shoulder belts 20 and 21 and the lap belt 22 are configured by the same webbing, and the lap belt 22 connects the lower ends of the first and second shoulder belt portions 20 and 21 to each other. Therefore, the first and second shoulder belts 20 and 21 and the lap belt 22 are configured by a single webbing.

  As shown in FIG. 7, the webbing constituting the first and second shoulder belts 20 and 21 and the lap belt 22 is slidable at the intersection (boundary portion) between the first shoulder belt 20 and the lap belt 22. Slip joints (rings) 23 are provided to support the first shoulder belts 20 and 21 and the lap belt 22 at the intersection (boundary) between the second shoulder belt 21 and the lap belt 22. Is provided with a slip joint (ring) 24 that slidably supports the webbing constituting the. The slip joints 23 and 24 are attached to the upper end portion of the first connecting member 40.

  As shown in FIG. 5, the first motor 30 is disposed below the intersection (slip joints 23, 24) between the first and second shoulder belts 20, 21 and the lap belt 22. The first motor 30 is fixedly attached to the seat cushion 1a or a member that is fixed to the seat cushion 1a and located below the upper surface of the seat cushion 1a. As shown in FIG. 3, the first motor 30 is the same as the front of the chest of the occupant P (AM50 occupant) in the vehicle front-rear direction or on the vehicle rear side, and on the vehicle front side from the vehicle rear side end of the seat cushion 1a. Arranged on the side. Only one first motor 30 may be provided, or two first motors 30 may be provided corresponding to each of the left and right first connecting members 40. When two first motors 30 are provided and the first motor 30 is disposed on the seat cushion 1a, as shown in FIG. 2, the two first motors 30 are vehicles of the seat cushion 1a. Provided on both sides in the width direction.

  The first motor 30 can wind up and rewind the left and right first connecting members 40 (which means “unwinding”, which means the opposite of winding). When the first motor 30 rotates forward, the first motor 30 winds up the first connecting member 40, and when the first motor 30 rotates reversely, the first motor 30 rotates the first connecting member 40. Rewind. The first motor 30 simultaneously winds and rewinds each of the left and right first connecting members 40 by the same amount.

  The first connecting member 40 connects the intersection of the first and second shoulder belts 20 and 21 and the lap belt 22 and the first motor 30. The first connecting member 40 connects the slip joints 23 and 24 and the first motor 30 without sagging. The upper end portion of the first connecting member 40 is attached to the slip joints 23 and 24 so as not to slide.

  The first connecting member 40 is made of a material that cannot be stretched (including a negligible stretch). The first connecting member 40 may be formed of a webbing that is separate from the webbing that forms the first and second shoulder belts 20 and 21 and the lap belt 22, but the first connecting member 40 is conspicuous. In order to prevent the visual field from being obstructed, it is desirable that the wire be made thinner than the webbing.

  Only one second motor 50 is provided. As shown in FIG. 3, the second motor 50 is fixed to the roof 2 of the vehicle. The second motor 50 is provided between the outer plate (not shown) of the roof 2 and the ceiling interior material 2a in the vertical direction. The second motor 50 is fixed to a cross member 2b or the like disposed on the roof 2. As shown in FIG. 1, the second motor 50 has a vehicle width direction center portion of the seat 1 (vehicle width direction center portion of the occupant P seated on the seat 1) or the vicinity thereof on the vehicle rear side. Is arranged.

  The second motor 50 is provided with a pretensioner (not shown) and a force limiter (not shown). Since the pretensioner is provided, the first and second shoulder belts 20 and 21 and the lap belt are automatically wound around the second connecting member 60 by the second motor 50 when a collision is detected. The restraint start of the passenger P by 22 can be accelerated. Further, since the force limiter is provided, the second connecting member 60 is prevented from generating any further tension when the second connecting member 60 is applied with a tension higher than a predetermined tension due to the collision. By loosening the restraint of the connecting member 60, the load applied to the occupant P from the first and second shoulder belts 20, 21 and the lap belt 22 can be reduced.

  The second connecting member 60 connects the upper ends of the first and second shoulder belts 20 and 21 and the second motor 50 when the belt is mounted. The second connecting member 60 extends in the vehicle width direction and is connected to the upper end portions of the first and second shoulder belts 20 and 21 when the belt is mounted, and the left and right connection bars 61 extend in the vehicle front-rear direction. And an extending member 62 that connects the second motor 50 to each other.

  The left and right connecting bar 61 is connected to the upper end of the first shoulder belt 20 when the belt is attached at or near one end in the vehicle width direction so as to be rotatable about the axis extending in the vertical direction (in the vehicle width direction). Has been. The left and right connecting bars 61 are rotatable around the axial center extending in the vertical direction (in the vehicle width direction) at the upper end portion of the second shoulder belt 21 when the belt is mounted at or near the other end portion in the vehicle width direction. It is connected. The center part in the vehicle width direction of the left and right connecting bar 61 is on the vehicle rear side from the seat 1 at or near the center part in the vehicle width direction of the seat 1 (the center part in the vehicle width direction of the occupant P sitting on the seat 1) .

  The left and right connecting bars 61 are made of a material that cannot be deformed (including a negligible deformation). The left and right connecting bars 61 may be made of metal, but are preferably made of resin in order to reduce the weight. The shape of the left and right connecting bars 61 may be a rod shape extending in the vehicle width direction, a triangular frame shape when viewed from the up-down direction, or a triangular shape when viewed from the up-down direction. A plate shape may be sufficient and another shape may be sufficient. In the illustrated example, the case where the shape of the left and right connecting bar 61 is a triangular frame when viewed from the up and down direction is shown. The left and right connecting bars 61 are movable only in the vehicle front-rear direction with respect to the roof 2. The left and right connecting bars 61 may be movable only in the vehicle front-rear direction with respect to the roof 2 along a guide (not shown) provided on the roof 2.

  Further, a spring 63 is attached to the left and right connecting bar 61 as a biasing means that biases the connecting bar 61 in the vehicle front direction. Specifically, a tension spring 63 is provided between the left and right connecting bar 61 and the roof cross member 2c, and always urges the left and right connecting bar 61 toward the front of the vehicle.

  The extending member 62 connects the left and right connecting bars 61 and the second motor 50 without sagging. The extending member 62 is made of a material that cannot be expanded and contracted (including a negligible expansion and contraction). The extending member 62 may be composed of a webbing separate from the webbing constituting the first and second shoulder belts 20, 21 and the lap belt 22, or may be composed of a wire thinner than the webbing. Good. The extending member 62 is non-slidably attached to the vehicle width direction center portion of the left and right connecting bar 61 or the vicinity thereof at the vehicle front side end portion. The vehicle rear side of the extending member 62 is connected to the second motor 50.

  The first and second levers 70 and 71 can be elastically deformed in a direction orthogonal to the vehicle width direction. The first and second levers 70 and 71 are made of, for example, a flexible resin whose thickness in the direction orthogonal to the vehicle width direction is reduced. When the first and second levers 70 and 71 are made of resin, they can be elastically deformed using resin elasticity in a direction perpendicular to the vehicle width direction (up and down direction). The rigidity of the first and second levers 70 and 71 is higher than the rigidity of the webbing constituting the first and second shoulder belts 20 and 21 and the lap belt 22.

  The first lever 70 covers at least a part of the first shoulder belt 20 in the longitudinal direction, and the second lever 71 covers at least a part of the second shoulder belt 21 in the longitudinal direction. The first lever 70 is formed by connecting the first shoulder belt 20 with the left and right connection bars 61 to the intersection of the first shoulder belt 20 with the second shoulder belt 21 (X-shaped intersection) and its surroundings. The second lever 71 extends from the connecting portion of the second shoulder belt 21 with the left and right connecting bars 61 to the intersection of the second shoulder belt 21 with the first shoulder belt 20 (X It covers the intersection of the mold) and the part up to its periphery. The end portions of the first and second levers 70 and 71 on the left and right connecting bar 61 side are connected to the left and right connecting bar 61 so as to be rotatable around the axis extending in the vertical direction (in the vehicle width direction).

  The first lever 70 and the second lever 71 are the intersections (X-shaped intersections, intersections) of the first and second shoulder belts 20 and 21, and the first and second shoulder belts 20 and 21. The first and second levers 70 and 71 are connected so as to be rotatable about an axis perpendicular to the vehicle width direction so as not to hinder sliding on the first and second levers 70 and 71.

  The first lever 70 includes a first upper lever portion 70a and a first lower lever portion 70b.

  The first upper lever portion 70a extends in the vehicle front-rear direction when the occupant P releases the belt. The vehicle rear side end portion of the first upper lever portion 70a is connected to the left and right connecting bar 61 so as to be rotatable in the vehicle width direction. The middle portion of the first upper lever portion 70a in the vehicle front-rear direction passes through the first guide 80. The vehicle front side end portion of the first upper lever portion 70a is connected to the first lower lever portion 70b so as to be rotatable in the vehicle width direction.

  The first lower lever portion 70b is located on the vehicle front side from the first upper lever portion 70a. The first lower lever portion 70b is an end portion on the first upper lever portion 70a side and is rotatably connected to the vehicle front side end portion of the first upper lever portion 70a.

  The second lever 71 includes a second upper lever portion 71a and a second lower lever portion 71b.

  The second upper lever portion 71a extends in the vehicle front-rear direction when the occupant P releases the belt. The vehicle rear side end portion of the second upper lever portion 71a is connected to the left and right connecting bar 61 so as to be rotatable in the vehicle width direction. The intermediate portion of the second upper lever portion 71a in the vehicle front-rear direction passes through the second guide 81. The vehicle front side end portion of the second upper lever portion 71a is connected to the second lower lever portion 71b so as to be rotatable in the vehicle width direction.

  The second lower lever portion 71b is located on the vehicle front side from the second upper lever portion 71a. The second lower lever portion 71b is an end portion on the second upper lever portion 71a side and is rotatably connected to the vehicle front side end portion of the second upper lever portion 71a.

  One each of the first and second guides 80 and 81 is provided. The first and second guides 80 and 81 are fixed to the vehicle roof 2. As shown in FIG. 3, the first and second guides 80 and 81 are provided between the outer plate (not shown) of the roof 2 and the ceiling interior material 2a in the vertical direction. The first and second guides 80 and 81 are fixed to a cross member or the like disposed on the roof 2. The first and second guides 80 and 81 are provided on the roof 2 on the vehicle rear side from the seat 1 on which the occupant P sits on the vehicle front side of the second motor 50.

  As shown in FIG. 1, the first and second guides 80 and 81 are arranged with a space in the vehicle width direction. The first and second guides 80 and 81 are provided at positions symmetrical to each other with respect to a plane that passes through or near the vehicle width direction center of the seat 1 and is orthogonal to the vehicle width direction. The distance in the vehicle width direction between the first and second guides 80 and 81 is the same (including substantially the same) as the distance between both ends of the left and right connecting bar 61 in the vehicle width direction. The vehicle width direction distance between the first and second guides 80 and 81 is wider than the vehicle width direction length of the occupant's head.

  The first guide 80 supports the first lever 70 (first upper lever portion 70a) so as to be slidable in a direction perpendicular to the vertical direction. The first guide 80 supports the first lever 70 (first upper lever portion 70a) so as to be slidable in the vehicle front-rear direction. The first guide 80 supports the first lever 70 (first upper lever portion 70a) with play in the vehicle width direction.

  The second guide 81 supports the second lever 71 (second upper lever portion 71a) so as to be slidable in a direction orthogonal to the vertical direction. The second guide 81 supports the second lever 71 (second upper lever portion 71a) so as to be slidable in the vehicle front-rear direction. The second guide 81 supports the second lever 71 (second upper lever portion 71a) with play in the vehicle width direction.

Here, the operation of the embodiment of the present invention will be described.
(A) When occupant P is not wearing a belt (before wearing the belt)
The first motor 30 is in a state where the first connecting member 40 is rewound, and the second motor 50 is in a state where the second connecting member 60 is wound up. Therefore, as shown in FIG. 2, the slip joints 23 and 24 are located above the head of the occupant P, and the first and second shoulder belts 20 and 21 and the lap belt 22 are above the head of the occupant P. In the position. As shown in FIG. 3, the first and second slip joints 23 and 24 are the same as the upper end of the vehicle front surface of the seat back 1b or on the vehicle rear side from the upper end. The first and second levers 70 and 71 are located on the vehicle rear side of the slip joints 23 and 24 at the same or substantially the same vertical position as the slip joints 23 and 24 when viewed from the vehicle width direction. As shown in FIG. 1, the first upper lever portion 70a and the second upper lever portion 71a extend in the vehicle front-rear direction in a state of being parallel or substantially parallel to each other.

(B) When occupant P wears a belt (when wearing a belt)
When an occupant P is seated on the seat 1 and the ignition is turned on, or an unillustrated switch is operated at a position where the occupant P is seated on the seat 1 and the ignition is turned on and the occupant P can easily operate (for example, an instrument panel). Or when the parking brake is released, the second motor 50 rewinds the second connecting member 60 and at the same time, the left and right connecting bars 61 start moving forward by the spring 63, and then the first motor 30 is activated (rotates forward), and the first motor 30 winds up the first connecting member 40. When the first motor 30 winds up the first connecting member 40, as shown in FIG. 6, the second motor 50 takes the second motor 50 by the force by which the first motor 30 winds up the first connecting member 40. The connecting member 60 is further rewound (the second connecting member 60 is further pulled out from the second motor 50). Since the first motor 30 winds up the first connecting member 40 and the second motor 50 rewinds the second connecting member 60, the slip joints 23, 24 approach the first motor 30 (vehicles). Move forward and downward). When the slip joints 23 and 24 move in a direction approaching the first motor 30, the vehicle front side end portions of the first and second levers 70 and 71 are pulled forward and downward in the vehicle, so that the first and second The levers 70 and 71 are elastically deformed, and the first and second shoulder belts 20 and 21 and the lap belt 22 move in a direction approaching the first motor 30. The first and first shoulder belts 20 and 21 are X-shaped in front of the chest of the occupant P, and the first and second levers 70 and 71 are in contact with the chest of the occupant P, and the lap belt 22 is the thigh of the occupant P. When the first and second shoulder belts 20 and 21 and the lap belt 22 move in the direction approaching the first motor 30 until they contact the vicinity of the base (near the waist), the first and second shoulder belts 20 , 21 and the lap belt 22, the occupant is restrained, and the belt mounting is completed. At this time, the slip joints 23 and 24 are at the same height as or lower than the occupant's waist.

  When the belt installation is completed, the vehicle rear side end portion or the vicinity thereof of the first upper lever portion 70a is supported by the first guide 80, and the vehicle rear side end portion or the vicinity thereof of the second upper lever portion 71a. Is supported by the second guide 81. Therefore, the vehicle rear side end portions of the first upper lever portion 70a and the second upper lever portion 71a and the vicinity thereof extend substantially in the vehicle front-rear direction when viewed from the vehicle width direction. In addition, you may incline along a roof.

  It is necessary to allow the occupant P to escape after the collision when the belt is installed and the vehicle collides. Therefore, (i) a belt cutter (not shown) can be easily reached by the occupant P (the side of the seat 1, the slip joints 23, 24, the first lever 70, the second lever 71, the lap belt 22, the instrument May be provided on an instrument panel, a console panel, or the like. Further, (ii) a switch (not shown) for rotating the first motor 30 in the reverse direction or a power supply to the first motor 30 is turned off and the first motor 30 is manually turned in the reverse direction (not shown). To the place where the hand of the passenger P can easily reach (the side of the seat 1, the slip joints 23, 24, the first lever 70, the second lever 71, the lap belt 22, the instrument panel, the console panel, etc.) It may be provided. In addition, (iii) the first motor 30 may be automatically reversely rotated after a certain time after the collision (for example, 5 to 10 seconds after the vibration of the collision is completely converged) The motor 30 may be automatically turned off so that the first motor 30 can be manually rotated in the reverse direction.

(C) When the occupant P releases the belt (when the belt is released)
When the vehicle speed becomes 0 (zero) and the shift lever is shifted to the P (parking) range, or when the vehicle speed becomes 0 (zero) and the shift lever is shifted to the P (parking) range and the occupant P is easily When a switch (not shown) provided at an operable position (for example, an instrument panel or the like) is operated, or when the parking brake is released, the first motor 30 operates (reversely rotates). Unwinds the first connecting member 40. When the first motor 30 rewinds the first connecting member 40, the second motor 50 winds up the second connecting member 60 by the winding force of the second motor 50 as shown in FIG. The first and second levers 70 and 71 are restored to a state before being elastically deformed downward (a state extending in the vehicle longitudinal direction). Therefore, the first and second shoulder belts 20 and 21 and the lap belt 22 move to a position above the head of the occupant P.

  When the first motor 30 rewinds the first connecting member 40 and the second motor 50 winds up the second connecting member 60 until the state (a) (before the belt is attached), the belt Demounting is complete.

  In addition, when the shift lever is shifted again to a range other than the P range after the belt mounting release is completed, the first motor is used to prevent the vehicle from being moved without mounting the belt. It is desirable that 30 be adapted to rewind the first connecting member 40 and attach the belt.

  Next, the operation of the embodiment of the present invention will be described.

In the embodiment of the present invention, the following effects can be obtained.
(I) the first motor 30 disposed below the intersection of the first and second shoulder belts 20 and 21 and the lap belt 22; the first and second shoulder belts 20 and 21 and the lap belt 22; 2 and the first motor 30. The second motor 50 rewinds the second connecting member 60 when the occupant P is seated with the ignition ON, for example. At the same time, the left and right connecting bars 61 begin to move forward of the vehicle by the spring 63, and then the first motor 30 is rotated forward so that the first motor 30 winds the first connecting member 40. The second shoulder belts 20 and 21 and the lap belt 22 can be moved downward, and the occupant P can be restrained by the first and second shoulder belts 20 and 21 and the lap belt 22 (the belt can be attached).
The first motor 30, the first connecting member 40, the second motor 50 provided on the vehicle roof 2, and the upper ends of the first and second shoulder belts 20 and 21 when the belt is mounted The first motor 30 when the vehicle speed is 0 (zero) and the shift lever is shift-changed to the P (parking) range. And the first motor 30 rewinds the first connecting member 40 and unwinds the second connecting member 60 with the second motor 50, whereby the first and second shoulder belts are wound. 20, 21 and the lap belt 22 can be moved upward from the head of the occupant P, and the belt can be released.
In this structure, unlike the conventional case, it is not necessary for the occupant P to engage and disengage the tongue plate and the buckle. Further, the belt can be mounted by winding the first connecting member 40 with the first motor 30, the first connecting member 40 is rewound with the first motor 30, and the second connecting member is used with the second motor 50. Since the belt can be unwound by winding 60, the belt can be attached and released in one step, and the 3-point belt is attached and released as before, and then the 2-point belt is attached and released. Compared to the case of having two processes, it is possible to shorten the time required for belt attachment / detachment.

(Ii) The belt can be mounted by winding the first connecting member 40 with the first motor 30, the first connecting member 40 is rewound with the first motor 30, and the second connecting with the second motor 50. Since the belt can be released by winding the member 60, the four-point belt can be automatically attached and released.

(Iii) Since the first lever 70 covering the first shoulder belt 20 and the second lever 71 covering the second shoulder belt 21 are provided, the rigidity of the first and second levers 70 and 71 is configured by webbing. By increasing the rigidity of the first and second shoulder belts 20, 21, the first and second shoulder belts 20, 21 can be compared with the case where the first and second levers 70, 71 are not provided. 21 (webbing) is bent in the middle of the longitudinal direction (crumpled) and the first and second shoulder belts 20 and 21 are X-shaped in front of the occupant P's chest when viewed from the vehicle longitudinal direction when the belt is worn. In addition, it is possible to prevent the chest of the occupant P from being restrained by the X-type first and second shoulder belts 20 and 21.

(Iv) Since the first lever 70 that covers the first shoulder belt 20 and the second lever 71 that covers the second shoulder belt 21 are provided, the first and second levers 70 and 71 are used by the occupant P when the belt is mounted. Can restrain the chest. Therefore, the vehicle seat belt device 10 and the occupant are compared with the case where the first and second shoulder belts 20 and 21 are not used to restrain the chest of the occupant P without the first and second levers 70 and 71. The contact area of P with the breast can be increased. Therefore, it is possible to disperse the force applied to the chest of the occupant P by the belt at the time of a vehicle collision.

(V) The first and second levers 70 and 71 are elastically deformable in a direction orthogonal to the vehicle width direction, and are located on the vehicle rear side from the seat 1 on which the occupant P is seated on the vehicle front side from the second motor 50. The first and second levers are provided on the roof 2 of the vehicle and have first and second guides 80 and 81 that slidably support the first and second levers 70 and 71 in the longitudinal direction of the vehicle. 70 and 71 try to maintain a posture extending in the vehicle longitudinal direction along the roof 2 of the vehicle between the vehicle longitudinal direction of the second motor 50 and the first and second guides 80 and 81. As a result, when the belt is released and the first motor 30 does not wind up the first connecting member 40, the first between the second motor 50 and the first and second guides 80 and 81. The distance between the second levers 70 and 71 in the vehicle front-rear direction is long, and the first and second levers 70 and 71 are located on the vehicle front side from the portions supported by the first and second guides 80 and 81. The portion located is short and the portion of the first and second levers 70 and 71 located on the vehicle front side from the portion supported by the first and second guides 80 and 81 is less likely to bend downward. The first and second shoulder belts 20 and 21 and the lap belt 22 can be reliably positioned above the head of the occupant P.

(Vi) The first and second levers 70 and 71 are elastically deformable in a direction perpendicular to the vehicle width direction, and are located on the vehicle rear side from the seat 1 on which the occupant P sits on the vehicle front side from the second motor 50. The first and second guides 80 and 81 are provided on the roof 2 of the vehicle and support the first and second levers 70 and 71 so as to be slidable in the vehicle front-rear direction. Therefore, the second motor 50 rewinds the second connecting member 60, and at the same time, the left and right connecting bars 61 start moving forward of the vehicle by the spring 63, and then the first motor 30 winds the first connecting member 40. When the first and second shoulder belts 20 and 21 and the lap belt 22 are moved downward, the first and second between the second motor 50 and the first and second guides 80 and 81 The distance between the levers 70 and 71 in the vehicle front-rear direction is shortened, and the portion of the first and second levers 70 and 71 that is located on the vehicle front side from the portion that is supported by the first and second guides 80 and 81 The portion of the first and second levers 70 and 71 located on the front side of the vehicle is more easily bent downward than the portions supported by the first and second guides 80 and 81. Therefore, a portion of the first and second levers 70 and 71 located on the vehicle front side from the portion supported by the first and second guides 80 and 81 is pulled downward and elastically deformed. However, of the first and second levers 70 and 71, the portion supported by the first and second guides 80 and 81 and the portion located on the vehicle rear side from the portion extend in the vehicle front-rear direction. In order to maintain, the portion of the first and second levers 70 and 71 located on the vehicle front side from the portion supported by the first and second guides 80 and 81 tends to rise upward. Therefore, the feeling of pressure felt by the occupant P when the belt is worn can be reduced.

(Vii) The first and second levers 70 and 71 are pivotally connected to each other at the intersection of the first and second shoulder belts 20 and 21, and the first motor 30 is used when the belt is mounted. As shown in FIGS. 1 and 5, the first connecting member 40 is wound to move the intersection of the first and second shoulder belts 20, 21 and the lap belt 22 to the front side and downward of the vehicle. As the angle decreases, the angle θ formed by the first and second levers 70 and 71 decreases. Therefore, when the belt installation is completed, the first and second shoulder belts 20 and 21 can surely restrain the occupant's chest (torso portion) rather than the base of the occupant's P arm.

(Viii) The first lever 70 includes a first upper lever portion 70a and a first lower lever portion 70b, and the second lever 71 includes a second upper lever portion 71a and a second lower lever portion 71b. The first upper lever portion 70a and the first lower lever portion 70b are connected to each other so as to be rotatable in the vehicle width direction, and the second upper lever portion 71a and the second lower lever portion 71b are connected to each other. Are coupled to each other so as to be rotatable in the vehicle width direction, the first and second levers 70 and 71 each have a single component structure. The vehicle width direction length can be reduced.

(Ix) Since the first and second shoulder belts 20 and 21 and the lap belt 22 are moved to the upper and rearward positions from the head of the occupant P when the belt is released, the first and second when the occupant P gets on and off the vehicle It is possible to prevent the shoulder belts 20 and 21 and the lap belt 22 from being in the way. Further, since the first and second shoulder belts 20, 21 and the lap belt 22 move to the upper and rear positions from the head of the occupant P when the belt is released, the vehicle interior space below the occupant P's line of sight when the belt is released. The first and second shoulder belts 20 and 21 and the lap belt 22 can be withdrawn, and when the belt is released, the first and second shoulder belts 20 and 21 and the lap belt 22 enter the field of view and are troublesome to the occupant P. It can suppress giving an image.

(X) Since the second connecting member 60 includes the left and right connecting bars 61 that are connected to the upper ends of the first and second shoulder belts 20 and 21, the left and right connecting bars 61 are configured by one second motor 50. Can be moved to the vehicle rear side, so that the upper ends of both the first and second shoulder belts 20 and 21 can be moved to the vehicle rear side. Therefore, two second motors, that is, a motor for moving the upper end portion of the first shoulder belt 20 to the vehicle rear side and a motor for moving the upper end portion of the second shoulder belt 21 to the vehicle rear side are provided. Compared with the case where it is required, the number of parts can be reduced and the cost can be reduced.

(Xi) When the belt is mounted, the vehicle front side end portions of the first and second levers 70 and 71 move to the vehicle front side and are pulled downward to make the first and second levers 70 and 71 elastic. Even if the straight line connecting the first and second guides 80 and 81 and the first motor 30 is on the vehicle rear side from the front surface of the occupant P when viewed from the vehicle width direction, the first, The second shoulder belts 20 and 21 and the lap belt 22 can be moved downward from the passenger P through the vehicle front side.

(Xii) Since the second connecting member 60 has an urging means (spring) 63 that urges the second connecting member 60 forward, the first motor 30 takes up the first connecting member 40 by winding the first connecting member 40. When the shoulder belts 20, 21 and the lap belt 22 are moved downward and worn, the chest of the occupant is compressed by the first and second shoulder belts 20, 21 and the lap belt 22 is placed on the appropriate occupant's waist. It can suppress that it cannot fully arrange | position to a position.
More specifically, the first and second shoulder belt portions 20 and 21 are covered at least partially in the longitudinal direction by the first and second levers 70 and 71. The effects and effects are obtained.
When the first connecting member 40 is being wound up by the first motor 30 (during the middle), the first and second levers 70 and 71 may be elastically deformed to be in close contact with the chest of the passenger. In that case, in order to move the lap belt 22 to an appropriate position on the occupant's waist, if the first connecting member 40 is further wound by the first motor 30, the occupant's chest is compressed and the lap belt 22 is It will not be possible to place it in the waist position of the appropriate occupant. As a countermeasure against this, the first and second levers are taken up when the first connecting member 40 is wound up by the first motor 30 by always urging the left and right connecting bars 61 by the spring 63 toward the front of the vehicle. By moving 70 and 71 further forward of the vehicle, the first and second levers 70 and 71 do not come into close contact with the chest of the occupant, and the lap belt 22 can be disposed at an appropriate occupant waist position.

(Xiii) Slip joints 23 and 24 are provided at the intersections of the lower ends of the first and second shoulder belts 20 and 21 and the lap belt 22, respectively. Therefore, it is possible to prevent the slip joints 23 and 24 from entering the field of view and giving a passenger a complicated image before the belt is attached (when the belt is released). Further, when the belt is mounted, the slip joints 23 and 24 are positioned at the same height as or below the occupant's waist, so that the lap belt 22 can be sufficiently disposed at the appropriate occupant's waist position.

1 is a schematic plan view of a vehicle seat belt device according to an embodiment of the present invention when a belt is released. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic front view of a vehicle seat belt device according to an embodiment of the present invention when a belt is released. 1 is a schematic side view of a vehicle seat belt device according to an embodiment of the present invention when a belt is released. 1 is a schematic plan view of a vehicle seat belt device according to an embodiment of the present invention when the belt is mounted. 1 is a schematic front view of a vehicle seat belt device according to an embodiment of the present invention when a belt is mounted. It is a side surface schematic diagram at the time of belt wearing of the seatbelt device for vehicles of the example of the present invention. It is a partial expansion perspective view which shows the slip joint and its vicinity of the vehicle seatbelt apparatus of this invention Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat 1a Seat cushion 1b Seat back 1c Headrest 2 Roof 2a Ceiling interior material 2b, 2c Cross member 10 Vehicle seat belt apparatus 20 1st shoulder belt 21 2nd shoulder belt 22 Lap belt 23, 24 Slip joint 30 1st Motor 40 first connecting member 50 second motor 60 second connecting member 61 left and right connecting bar 62 extending member 63 spring 70 first lever 70a first upper lever portion 70b first lower lever portion 71 second Lever 71a second upper lever portion 71b second lower lever portion 80 first guide 81 second guide P

Claims (5)

First and second shoulder belts that are X-shaped when viewed from the front-rear direction of the vehicle in front of the occupant's chest when the belt is mounted;
A lap belt configured by the same webbing as the webbing and connecting a lower end portion of the first shoulder belt portion and a lower end portion of the second shoulder belt portion when the belt is mounted;
A first motor disposed below an intersection of the first and second shoulder belts and the lap belt;
A first connecting member that connects the first motor and the intersection of the first and second shoulder belts and the lap belt;
A second motor provided on the roof of the vehicle;
A second connecting member that connects the second motor and the upper end of the first and second shoulder belts when the belt is mounted;
A vehicle seat belt apparatus comprising:   The vehicle seat belt device according to claim 1, further comprising a biasing unit that biases the second connecting member forward of the vehicle. A first lever that is elastically deformable in a direction orthogonal to the vehicle width direction and covers the first shoulder belt, and a second lever that is elastically deformable in a direction orthogonal to the vehicle width direction and covers the second shoulder belt. Lever,
A first guide which is provided on a vehicle roof on the vehicle rear side of a seat on which a passenger sits on the vehicle front side of the second motor and supports the first lever so as to be slidable in the vehicle front-rear direction; A second guide that is provided on the roof of the vehicle on the vehicle rear side of a seat on which a passenger sits on the vehicle front side of the motor 2 and supports the second lever slidably in the vehicle front-rear direction. ,
2. The vehicle seat belt device according to claim 1, wherein the first and second levers are pivotally connected to each other at an intersection of the first and second shoulder belts. In the state before the belt is mounted, the first and second shoulder belts and the lap belt are in a position above the occupant head,
When the belt is mounted, the second motor rewinds the second connecting member, and the first and second shoulder belts and the lap belt start moving forward of the vehicle, and then the first motor The first and second shoulder belts and the lap belt move downward by restraining the one connecting member to restrain the occupant,
When the belt is released, the first motor rewinds the first connecting member, and the second motor winds the second connecting member, whereby the first, second shoulder belts, and the lap belt. The vehicle seat belt device according to claim 1, wherein the vehicle moves to a position above the passenger's head. A slip joint is provided at each intersection of the first and second shoulder belts and the lap belt,
Before the belt is installed, the slip joint is located above the passenger head,
The vehicle seat belt device according to any one of claims 1 to 4, wherein, when the belt is mounted, the slip joint is located at a height equal to or lower than a passenger's waist.

Images