JP2007112229A - Seat belt device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat belt device which does not impart foreign-body sensation to a seated occupant, and does not cause trouble when flipping up a seat cushion or sliding a seat. <P>SOLUTION: The base end of a freely deformable webbing 31 is fixed in a sub seat SB, a buckle 2 is mounted to the tip end of the webbing 31, and the buckle 2 is exposed from the opening provided at the side part of the sub seat SB to the outside of the sub seat SB. A guide wall 52 and an outer wall 53 which vertically guide the buckle 2 along the seat side edge while regulating the movement in the right and left direction of the seat between a use attitude where the buckle 2 is upward and a storage attitude which is fallen down in approximately horizontal state by its own weight are provided at the opening edge of the opening. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a seat belt device used for a sub-seat of a vehicle seat, and more particularly to an installation structure for the buckle.

  FIG. 9 shows a sub seat SB set on the right seat SR of the vehicle. The sub-seat SB is provided with a three-point seat belt device. That is, the webbing 1 is stretched between the upper and lower ends on one side edge of the seat back S1 of the sub-sheet SB, and one end of the webbing 1 is installed in the seat back S1 through the upper end opening of the seat back S1. It is wound on a retractor. A tongue plate 11 is attached in the middle of the webbing 1, and the webbing 1 is pulled out so as to cross the sub seat SB, and the tongue plate 11 is coupled to a buckle 12 provided on the other side edge of the sub seat SB. Hold the body.

  Conventionally, the buckle 12 is installed in such a manner that the buckle 12 is fixed to the front end of the webbing 13 having a predetermined length as shown in FIG. 10, and the base end of the webbing 13 is fixed to the seat frame in the seat shield cover S3. Yes. The reason for this is that the sub-seat SB normally cannot secure a sufficient seat width, and therefore, the buckle 12 is attached to the deformable webbing 13 so that the lower body of the seated occupant is not given a foreign body sensation.

Patent Document 1 discloses a structure in which a metal arm that can be rotated in the vertical direction is provided on a side edge of a seat cushion, and a buckle is fixed to the tip of the arm.
ACT 7-8108

  By the way, as shown in FIG. 10, the buckle 12 is held in the conventional seat belt device by sewing a ring-shaped rubber band 14 on the side edge of the seat cushion S2, and webbing the rubber band 14 through the buckle 12. 13 is held by the contraction elastic force of the rubber band 14. However, in this structure, as shown in FIG. 11, when the seat cushion S2 is flipped up, it interferes with the buckle 12 that swings inward, pulling the rubber band 14, and the sewn portion may be peeled off. . Further, as shown in FIG. 12, if the buckle 12 swings outward, there is a possibility that it interferes with the adjacent seat SL (see FIG. 9) and becomes an obstacle when the seat SR is slid.

  Accordingly, the present invention solves such a problem, and provides a seat belt device that does not give a sense of foreign matter to a seated occupant and that does not cause trouble when the seat cushion is flipped up or the seat is slid. The purpose is to do.

  In order to achieve the above object, in the first invention, the base end of the freely deformable string member (31) is fixed in the sheet (SB), and the buckle (2) is attached to the distal end of the string member (31). The buckle (2) is exposed to the outside of the seat (SB) from the opening (511) provided on the side portion of the seat (SB), and the buckle (2) is located above the opening edge of the opening (511). A guide portion (52) that guides the buckle (2) in the vertical direction along the side edge of the seat while restricting the movement in the left and right direction of the seat while reaching the stowed posture that is tilted substantially horizontally due to the facing use posture and its own weight. , 53).

  In the first aspect of the present invention, when the seat belt device is used by coupling the buckle with the tongue plate, the buckle is lifted along the opening so as to be used upward and coupled with the tongue plate. In this state, the buckle is restricted by the guide portion and does not shake significantly in the left-right direction of the seat, so that stability when using the seat belt is improved. When the seat belt device is not used, if the connection between the buckle and the tongue plate is eliminated, the buckle falls down substantially horizontally due to its own weight while being regulated by the guide portion, and becomes a storage posture. In this stored posture, the buckle is restricted from swinging the seat in the left-right direction by the guide portion, so that there is no problem such as interference with the seat cushion when the seat cushion is flipped up or interference with the adjacent seat when the seat slides. In the first aspect of the invention, the buckle is attached to the tip of the freely deformable string member, so that the seated occupant is not given a foreign object feeling.

  In the second invention, a guide member comprising a bottom wall (41) provided with an opening (411) coinciding with the opening of the sheet (SB) and left and right side walls (42, 43) functioning as the guide part. (4) is mounted on the sheet (SB). In the second invention, the same effect as in the first invention can be obtained.

  In addition, the code | symbol in the said parenthesis shows the correspondence with the specific means as described in embodiment mentioned later.

  As described above, according to the seat belt device of the present invention, the seated occupant is not given a foreign object feeling, and no obstacle is caused when the seat cushion is flipped up or the seat is slid.

(First embodiment)
FIG. 1 shows a side perspective view of a sub-seat provided with a seat belt device, and corresponds to FIG. 10 showing the prior art. In FIG. 1, the side portion of the seat cushion S2 of the sub seat is covered with a resin seat shield cover S4 formed in a substantially L shape in a side view, and an opening is provided in the corner portion as described later. The buckle 2 of the seat belt device is exposed here. As shown in FIG. 2, the buckle 2 is a columnar body having a substantially square cross section that gradually decreases in diameter toward the base end (lower end), and a horizontally long opening 21 into which the tongue plate 11 (see FIG. 9) is inserted is formed on the front end surface. Has been. The base end 22 of the buckle 2 is fixed with U-shaped ends of a belt-like webbing 31 as a string member having a fixed length, and an anchor plate 32 is attached to the webbing 31, and its mounting hole By 321, the anchor plate 32 is fixed to the seat frame located in the seat shield cover S4.

  As shown in FIG. 3, a guide member 4 is mounted on the periphery of the opening where the buckle 2 is exposed. As shown in FIG. 4, the guide member 4 has a container shape that opens to the front of the seat, and a bottom wall 41 of the container is formed with a vertically long opening 411 having a shape that matches the opening of the sheet shield cover S4. The bottom wall 41 is a front-declining slope that bulges and curves slightly forward, and the center of curvature is in the vicinity of a fixed point at the base end of the webbing 31 (FIG. 2). The left and right side walls 42, 43 of the guide member 4 extend while being curved in the vertical direction along the opening 411. On the outer surface of one side wall 42, a caulking projection 421 is formed at the vertical position, and the upper wall 44 Locking protrusions 441 and 451 having hook-shaped tips are formed on the outer surface of the lower wall 45, respectively.

  The guide member 4 is caulked or engaged by inserting the crimping projections 421 and the locking projections 441 and 451 into the mounting holes provided in the seat shield cover S4 so as to correspond to the crimping projections 421 and the locking projections 441 and 451, respectively. By attaching, it is attached to the seat shield cover S4. In the container of the guide member 4, an upright thin holding wall 46 is formed at a boundary position between the lower wall 45 and the bottom wall 41. The holding wall 46 has a U-shaped top surface, and the width of the central recessed portion 461 is substantially equal to the width of the corresponding portion of the buckle 2 when it falls to a substantially horizontal posture as will be described later.

  In the seat belt device having such a structure, when the buckle 2 is combined with the tongue plate 11 (see FIG. 9) and the device is used, the buckle 2 is opened with the opening 411 (see FIG. 1) of the guide member 4 as shown in FIG. 4) is pulled up to a use posture facing upward, and is combined with the tongue plate 11. In this state, the buckle 2 is regulated by the left and right side walls 42 and 43 of the guide member 4 and does not swing greatly in the inner and outer directions of the sub-seat SB. Therefore, stability when using the seat belt is improved. When the seat belt device is not used, if the connection between the buckle 2 and the tongue plate 11 is eliminated, the buckle 2 is restricted by the left and right side walls 42 and 43 of the guide member 4 while the buckle 2 is substantially centered on the fixing point of the base end of the webbing 31. As shown in FIG. 5, it turns and falls to the front and lower by its own weight until it is substantially horizontal, reaches the recessed portion 461 (FIG. 4) of the holding wall 46, and becomes a storage posture. In this stored posture, the buckle 2 is held by the holding wall 46 without rattling. In this way, the buckle 2 in the horizontal storage position is held without swinging inward or outward of the sub seat SB, so that it interferes with this when the seat cushion S2 is flipped up, or when the sub seat SB slides, the adjacent seat SL (see FIG. 9) There will be no inconvenience such as interference.

(Second Embodiment)
In the present embodiment, as shown in FIG. 6, a longitudinally elongated opening 511 for exposing the buckle 2 (FIG. 7) similar to that of the first embodiment is provided on the inclined surface 51 of the seat shield cover S <b> 4 that slopes downward and forward. A guide wall 52 is formed on the outer edge of the cover S4. The guide wall 52 is positioned substantially parallel to the outer wall 53 of the seat shield cover S4 with the opening 511 in between, and a first wall is located between the outer wall 53 and the guide wall 52 near the lower edge of the opening 511. A standing thin holding wall 54 having a recessed portion 541 similar to that of the embodiment is formed. The inclined surface 51 in which the opening 511 is formed is slightly bulging forward and the center of curvature is in the vicinity of the fixing point of the base end of the webbing 31 (FIG. 2) to which the buckle 2 is attached. The upper edge of the guide wall 52 is also curved with a curvature centered around the fixed point.

  In the seat belt device having such a structure, when the buckle 2 is used with the tongue plate 11 (see FIG. 9) and the device is used, the buckle 2 is opened to the opening 511 of the seat shield cover S4 as shown in FIG. It is pulled up along (FIG. 6) so as to have a use posture facing upward, and is coupled to the tongue plate 11. In this state, the buckle 2 is restricted by the guide wall 52 and the outer wall 53 and does not swing greatly inward and outward of the sub-seat SB, so that the stability when using the seat belt is improved. When the seat belt device is not used, when the connection between the buckle 2 and the tongue plate 11 is eliminated, the buckle 2 is regulated by the guide wall 52 and the outer wall 53, while the buckle 2 is substantially centered on the fixing point of the webbing 31 as shown in FIG. It turns and falls to the front and bottom until it is substantially horizontal due to its own weight, reaches the recessed portion 541 (FIG. 6) of the holding wall 54, and becomes the storage posture. In this stored posture, the buckle 2 is held by the holding wall 54 without rattling. In this way, the buckle 2 in the horizontal storage position is held without swinging inward or outward of the sub seat SB, so that it interferes with this when the seat cushion S2 is flipped up, or when the sub seat SB slides, the adjacent seat SL (see FIG. 9) There will be no inconvenience such as interference.

It is a principal part perspective view of the sub seat which made the buckle the use attitude | position in 1st Embodiment of this invention. It is a perspective view of a buckle. It is a principal part perspective view of the sub sheet | seat of the state with which the guide member was mounted | worn. It is a perspective view of a guide member. It is a principal part perspective view of the sub seat which made the buckle the accommodation attitude | position. It is a principal part perspective view of the sub sheet | seat which provided the guide wall in 2nd Embodiment of this invention. It is a principal part perspective view of the sub seat which made the buckle use posture. It is a principal part perspective view of the sub seat which made the buckle the accommodation attitude | position. It is a perspective view of a vehicle seat showing a conventional example. It is a principal part perspective view of the sub sheet | seat provided with the buckle. It is a principal part perspective view of the sub sheet | seat provided with the buckle. It is a principal part perspective view of the sub sheet | seat provided with the buckle.

Explanation of symbols

2 ... Buckle, 31 ... Webbing, 4 ... Guide member, 41 ... Bottom wall, 411 ... Opening, 42, 43 ... Side wall, 511 ... Opening, 52 ... Guide wall, 53 ... Outer wall, SB ... Sub-sheet.

Claims (2)

The base end of the freely deformable string member is fixed in the seat, and a buckle is attached to the leading end of the string member, and the buckle is exposed to the outside from the opening provided on the side portion of the sheet. The buckle is vertically moved along the seat side edge while restricting movement of the buckle in the left-right direction of the seat until the buckle is in the use posture in which the buckle is directed upward and the stowed posture in which the buckle is tilted horizontally by its own weight. A seat belt device provided with a guide portion for guiding. The seat belt device according to claim 1, wherein a guide member including a bottom wall provided with an opening corresponding to the opening of the seat and left and right side walls functioning as the guide portion is attached to the seat.

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