JP6516794B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat.

  As a seat belt device of a car, one provided with a pretensioner (pretensioner) is used (see Patent Document 1). The pretensioner is equipped for the purpose of improving the protection performance of the occupant by securing it to the seat before the occupant starts moving forward by pulling in the belt (webbing) of the seat belt device at the time of a collision of the vehicle and removing its slack. Device.

  Such a pretensioner may be configured using a cable and a device for pulling in the cable so as to be suitable for drawing in the webbing of the seat belt device.

JP, 2010-285048, A

  However, the cable-based pretensioner has a certain degree of flexibility and flexibility, so that its movement, in particular, includes a support member to which the end of the webbing is attached and connected to the cable The movement of the upper part of the pretensioner (hereinafter also referred to as the behavior of the pretensioner in the present specification) may not be limited to an appropriate range. For example, when the vehicle seat is slid in the front-rear direction, the support member of the pretensioner sometimes gets caught between the B-pillar of the vehicle body and the seat.

  Then, an object of this invention is to provide the vehicle seat which can restrict | limit the behavior of a pretensioner to an appropriate range.

A vehicle seat according to one aspect of the present invention is
A pretensioner having a support member to which an end of a webbing of a seat belt device is attached, a cable member connected to the support member, and a pull-in device for pulling the cable member in a predetermined case;
A regulating member that regulates the behavior of the support member of the pretensioner;
Equipped with

  In such a vehicle seat, the behavior of the support member of the pretensioner can be regulated to an appropriate range by the regulating member. Therefore, when the vehicle seat is slid back and forth, the support member of the pretensioner is less likely to be caught between the B-pillar and the seat. In addition, the regulating member only regulates the behavior of the support member of the pretensioner, and does not prevent the operation of the pretensioner at the time of a collision or the like.

  In the vehicle seat of the above aspect, the restriction member may be made of a stretchable member.

  In the vehicle seat of the above aspect, the restricting member may be disposed at a position that limits the movable range of the support member to the side of the vehicle seat.

  In the vehicle seat of the above aspect, the regulating member may partition the movable range of the support member.

  In the vehicle seat of the above aspect, the restriction member may be a rubber band that is bridged in the recess of the base portion of the vehicle seat.

  In the vehicle seat of the above aspect, the restricting member may limit the movable range of the support member to a range centered on a predetermined base point.

  In the vehicle seat of the above aspect, the regulating member may be configured of a rubber band attached to at least one point of the vehicle seat.

  In the vehicle seat of the above aspect, the restriction member may be fixed to a support hook member that supports the side of the trim cover.

  According to the present invention, the behavior of the pretensioner can be limited to an appropriate range.

It is a perspective view of a seat for vehicles with a built-in seat belt. It is a perspective view showing an outline of a seat belt built-in type vehicle seat with a passenger. It is a side view showing composition of a side by which a pretensioner was installed among a base parts of a vehicular seat in a 1st embodiment. It is a figure which shows a part of vehicle seat seen from the IV direction in FIG. FIG. 5 is a view showing a cross-sectional structure of a vehicle seat taken along line VV of FIG. 3; It is a side view showing composition of a side by which a pretensioner was installed among base parts of a vehicular seat in a 2nd embodiment. It is a figure which shows a part of vehicle seat seen from the VII direction in FIG. It is a figure which shows the cross-section of the vehicle seat in the VIII-VIII line of FIG. (A) It is a figure which shows the pretensioner before pulling in webbing, and the pretensioner after pulling in (B) webbing.

  Hereinafter, a preferred embodiment of a vehicle seat 1 according to the present invention will be described in detail with reference to the drawings (see FIGS. 1 to 9).

  The vehicle seat 1 includes a seat 2 on which an occupant sits, a backrest 3 supporting the back of the occupant, a headrest 4 and a base portion 6, and further includes a built-in seat belt device 5 (FIG. 1-FIG. 3).

  Each of the seat 2 and the backrest 3 includes a cushion body made of foam (in the figure, only the cushion body of the seat 2 is shown with a symbol 2C) (see FIG. 4, FIG. 8 etc.). A trim cover is placed on the cushion 2C of the seat 2 and the cushion (not shown) of the backrest 3 respectively. In the figure, the trim cover to be put on the cushion body 2C of the seat 2 is indicated by reference numeral 25 (see FIGS. 3 and 8).

  The backrest 3 is provided with a reclining mechanism which can be operated using a reclining lever 66. Inside the backrest 3, a frame portion (not shown) called a panel frame or a seat back frame for supporting the load of the occupant is provided.

  The seat belt device 5 is a device that constitutes a vehicle seat 1 of a seat belt built-in type. The vehicle seat 1 is provided with a buckle 51, a tongue 52, a webbing 53, a pretensioner 54, and a pull-in device 54e (see FIGS. 1 to 3 and 9).

  The base portion 6 or the backrest 3 incorporates a winding device (retractor) (not shown) for winding the webbing 53. An opening 35 for pulling out the webbing 53 is provided on one of the shoulders of the backrest 3.

  The pretensioner 54 is configured to pull in the webbing 53 by the pull-in device 54e in the event of a vehicle collision. The drawing-in device 54e is a device for drawing in the webbing 53 through the cable member 54d and the supporting member 54b at the time of a vehicle collision by using the force of gas when the explosive explodes, etc. and improving the occupant protection performance of the seat belt device 5. is there. Also, in the pretensioner 54, the portion of the cable member 54d which is retracted by the retraction device 54e is formed of a member having a suitable flexibility and durability, such as a cable. A shaft member 54a is provided at the end which is the upper side when the cable member 54d is used, and a support member 54b is further provided at the tip of the shaft member 54a. The support member 54b is provided with a webbing through tongue 54c, and the lower end of the webbing 53 is attached to the webbing through tongue 54c (see FIG. 9 and the like).

  Further, in the vehicle seat 1 of the present embodiment, a recessed portion 61 is formed in the side portion (vehicle outer side) of the base portion 6 supporting the seat 2 so as to be narrower than the other portions of the portion. The support member 54b of the pretensioner 54, the shaft member 54a, and the like are disposed in the recess 61, and can move (behave) back and forth within the range of the recess 61 in the front-rear direction (see FIG. 3 etc.). The recess 61 is provided when molding a resin cover portion (for example, a portion called a reclining cover or the like) of the base portion 6 made of resin.

  The vehicle seat 1 of the present embodiment is provided with a regulating member 8. The regulating member 8 is a member provided separately from the base portion 6 and the like of the vehicle seat 1, restricts the movable range of the upper portion of the support member 54b and the like of the pretensioner 54, and regulates the behavior. Hereinafter, a specific configuration example of the regulating member 8 will be described as a first embodiment and a second embodiment.

First Embodiment
The restricting member 8 in the present embodiment is constituted by a member which is bridged in the recess 61 of the base portion 6, and the movable range to the side of the pretensioner 54 is partitioned or restricted to support the pretensioner 54. The behavior of the member 54b and the like, more specifically, the behavior of the pretensioner 54 from the recess 61 of the support member 54b and the like to the side is regulated within a certain range (see FIGS. 3 to 5).

  Although the specific example of the member which comprises this control member 8 is not limited in particular, it is preferable that it is a thing which does not bar the operation at the time of cable member 54d being drawn by drawing device 54e at the time of a vehicle collision. More specifically, when the cable member 54d is pulled in, the upper portion of the support member 54b or the like of the pretensioner 54 does not affect the operation when the cable member 54d is pulled in even if it is difficult or caught. It is preferable that the regulation member 8 is made of such a material, has a shape, and / or is subjected to a process such as surface finish.

  In the present embodiment, the regulating member 8 is configured of a rubber band that spans the recess 61. When a stretchable member such as a rubber band is used as the control member 8, even if the support member 54b or the like is pulled when it is pulled in, it can be pulled in so as not to affect the operation. Further, since the restricting member 8 can be extended when the support member 54 b and the like of the pretensioner 54 are arranged in the recess 61, the support member 54 b and the like can be easily passed between the restricting member 8 and the recess 61. In addition to the rubber band, it is possible to configure the regulating member 8 using a skin or the like.

  Slit-shaped mounting holes 62 and 63 are provided in a part of the base portion 6, for example, the vehicle front side wall and the vehicle rear side wall of the recess 61, and both ends of the regulating member 8 are base portions It is possible to fix inside of 6 (see FIG. 5 etc.). As an example, in the present example, the control member 8 and the base portion 6 are welded at the welding portion 64. According to such a configuration, both ends of the regulating member 8 can not be seen from the outside, and when the vehicle seat 1 is slid in the front-rear direction, both ends of the regulating member 8 contact other portions In addition, it is possible to prevent the occupant from touching the end of the regulating member 8.

  In the present example, both ends of the regulating member 8 are fixed to the inside of the base portion 6 by welding (see FIG. 5), but this is merely an example. Although not shown in particular, the restricting member 8 can be replaced later if fixed in a removable state. Alternatively, both ends of the regulating member 8 may be fixed using a member such as a pin.

  Further, in this example, the restricting member 8 is disposed so as to be orthogonal to the longitudinal direction of the shaft member 54a, the support member 54b, and / or the cable member 54d of the pretensioner 54 at the normal time (see FIG. 3). ). In the case where the restricting member 8 is disposed as described above, the length of the restricting member 8 may be minimized, although depending on the shape of the recess 61.

Second Embodiment
The regulating member 8 in the present example is formed of a member in which the base end side is attached to a part of the vehicle seat 1 and the tip end side is hung on the pretensioner 54 (see FIGS. 6 to 8). The restricting member 8 limits the movable range of the pretensioner 54 to a range centered on a predetermined base point (in this case, a point attached to the side of the vehicle seat 1 or an end point serving as a center of movement).

  In this example, the regulation member 8 is configured by a rubber band. When an elastic member such as a rubber band is used as the restricting member 8, the operation of the pretensioner 54 at the time of retraction is hardly affected.

  The form of the tip end side of the regulating member 8 is not particularly limited. In this example, the restricting member 8 is folded back at the tip end, and the folded portion is hung on the narrow portion of the webbing threading tongue 54c of the pretensioner 54 (see FIG. 7), but this is only a preferred example. In addition to this, for example, the distal end side may be folded halfway and stitched to provide an annular portion, and the annular portion may be in a state of passing through a part of the pretensioner 54 (such as a tongue 54c for webbing threading) .

  The base end side of the regulating member 8 is, for example, sewn and attached to a part of the vehicle seat 1 (see FIG. 8; in FIG. 8, a sewn part is indicated by reference numeral 81). There is no particular limitation on where to fix the end portion side of the regulating member 8, and it may be set appropriately, for example, by sewing and attaching to the trim cover 25. As an example, in the present embodiment, in a state in which a part of the regulating member 8 is inserted into the gap between the base portion 6 and the seat 2 (the trim cover 25), the base end portion is sewn to the hook member 26 and fixed. (See Figure 8). The hook member 26 is a member for suspending and supporting the side of the trim cover 25 and is hooked to the support member 27 from, for example, a wire inside the base portion 6. In such a configuration, it is possible to prevent the influence of the pulling force applied to the regulating member 8 from affecting the trim cover 25.

  In the above-described vehicle seat 1, the behavior of the upper portion of the support member 54 b or the like of the pretensioner 54 such as protruding to the outside of the recess 61 can be regulated by the regulating member 8. Therefore, for example, when the vehicle seat 1 is slid back and forth, a situation in which part of the pretensioner 54 is caught between the B-pillar and the seat can be suppressed. Further, the restriction member 8 described above does not disturb the operation of the pretensioner 54 at the time of a vehicle collision or the like.

  The above-described embodiment is an example of the preferred embodiment of the present invention, but is not limited to this, and various modifications can be made without departing from the scope of the present invention. For example, although the form which applied this invention to the vehicle seat 1 of a seatbelt built-in type was demonstrated in the above-mentioned embodiment, this is only a suitable example. A vehicle seat 1 provided with a pretensioner 54 capable of moving sideways or the like, including a flexible cable member even if the vehicle seat 1 is not a seat belt built-in type Therefore, the present invention can be applied.

  The present invention is suitably applied to a vehicle seat provided with a pretensioner that pulls in the webbing of the seat belt in a predetermined case such as a vehicle collision.

DESCRIPTION OF SYMBOLS 1 ... Seat for vehicles, 5 ... Seat belt (seat belt apparatus), 6 ... Base part, 8 ... Control member, 25 ... Trim cover, 26 ... Hook member, 27 ... Wire, 53 ... Webbing, 53t ... Webbing end , 54: Pretensioner, 54b: Support member, 54d: Cable member, 54e: Pull-in device, 61: Recess

Claims (8)

In the vehicle seat,
A pretensioner having a support member to which an end of a webbing of a seat belt device is attached, a cable member connected to the support member, and a pull-in device for pulling the cable member in a predetermined case;
A regulating member that regulates the behavior of the support member of the pretensioner;
Equipped with
The restriction member is a rubber band which is disposed at a position which restricts the movable range of the support member to the side of the vehicle seat, and which is spanned in a recess of a base portion of the vehicle seat, the support member der Ru, a vehicle seat intended for partitioning the movable range of.   In the vehicle seat,
  A pretensioner having a support member to which an end of a webbing of a seat belt device is attached, a cable member connected to the support member, and a pull-in device for pulling the cable member in a predetermined case;
  A regulating member that regulates the behavior of the support member of the pretensioner;
Equipped with
  The restriction member is disposed at a position that restricts the movable range of the support member to the side of the vehicle seat, and is configured of a rubber band attached to at least one point of the vehicle seat, and A seat for a vehicle, which limits a movable range to a range centered on a predetermined base point. The restricting member is made of a member having stretchability, the vehicular seat according to claim 1 or 2. The vehicle seat according to claim 2 , wherein the restriction member divides a movable range of the support member. The vehicle seat according to claim 2 , wherein the restriction member is a rubber band bridged in a recess of a base portion of the vehicle seat. The vehicle seat according to claim 1 , wherein the restricting member restricts the movable range of the support member to a range centered on a predetermined base point. The vehicle seat according to claim 1 , wherein the restriction member is configured by a rubber band attached to at least one point of the vehicle seat. The vehicle seat according to claim 2 , wherein the restriction member is fixed to a support hook member that supports a side portion of the trim cover of the vehicle seat.