JP2016078693A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat which prevents webbing of a seat belt from contacting with a rotary link to inhibit damage.SOLUTION: An end part of a rotary shaft 21b of a rotary link 20 provided at a foldable vehicle seat penetrates through side wall parts 21a of the rotary link 20 in a width direction of the vehicle seat. The side wall parts 21a are provided with: brackets 30d which hold a buckle through webbing 30a, 30b; and wires 21d which inhibit contact between the webbing 30a, 30b and the rotary link 20. The wires 21d respectively contact with the webbing 30a, 30b at positions separated from the rotary link 20.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle seat, and more particularly to a vehicle seat capable of suppressing wear of a seat belt in a foldable vehicle seat.

  Vehicle seats that can be stored in the storage position formed on the vehicle body floor are already well known, and among them are vehicle seats that correspond to the rear seats of the vehicle, and are provided behind the vehicle body floor by jumping backward. There is a vehicle seat that can be stored in the recessed portion (for example, see Patent Document 1).

  As a mechanism for storing a vehicle seat, a rotation link that connects a seat cushion of a vehicle seat and a vehicle body floor and rotates with respect to the vehicle body floor is known. The seat cushion moves toward the storage position by the pivoting operation about the pivot axis by the pivot link.

JP 2014-172485 A

Here, in the vehicle seat described in Patent Document 1, the webbing on the buckle side of the seat belt is fixed to the rotating link by a bracket as a seat belt anchor.
And the rotation link approaches or separates from the seat cushion by rotating. For this reason, the webbing fixed to the rotation link is loosened when the rotation link is close to the seat cushion, and is extended when the rotation link is separated from the seat cushion.
For this reason, the webbing may come into contact with the rotating link (particularly the shaft end) and be damaged by being loosened or extended in accordance with the rotation of the rotating link.

  When a separate member that prevents contact between the webbing and the rotating link is attached to the rotating link, the manufacturing efficiency may be reduced due to the attaching operation. In addition, when the member interferes with other members, the rotation of the rotation link may be hindered.

Accordingly, the present invention has been made in view of the above-described problems, and an object of the present invention is to prevent the damage of the seat belt by preventing the webbing of the seat belt from touching the rotating link. Is to provide.
Another object of the present invention is to provide a vehicle seat that can suppress damage to the webbing and can achieve smooth rotation while avoiding interference with other members.
Still another object is to provide a vehicle seat including a member that can suppress damage to the webbing and can be easily attached.

According to the vehicle seat of the present invention, the subject includes a seat cushion and a pivot link disposed below the seat cushion, and the pivot link pivots in a direction close to the seat cushion. A buckle for locking a seat belt worn by a seated person of the vehicle seat is held on the side wall portion of the rotating link via a webbing. This is solved by the provision of a buckle holding portion that performs contact with the webbing at a position spaced from the rotation link and a contact suppression portion that suppresses contact between the webbing and the rotation link.
According to the above configuration, the contact suppressing portion is provided on the side wall portion of the rotation link, so that the contact between the webbing and the rotation link is suppressed by contacting the webbing at a position separated from the rotation link. Can do.

An end portion of the rotation shaft of the rotation link passes through the side wall portion of the rotation link in the width direction of the vehicle seat, and the contact suppressing portion is separated from the end portion of the rotation shaft. It is preferable to contact the webbing at the position where the webbing and the end of the rotating shaft are prevented from contacting each other.
According to the above configuration, the end portion of the rotation shaft of the rotation link and the webbing that are likely to be worn when the webbing comes in contact with the webbing at a position apart from the end portion of the rotation shaft. Can be prevented from touching.

Moreover, the said contact suppression part may consist of a linear member.
According to the said structure, by using a linear member with a small occupation space as a contact suppression part, interference with another member can be avoided and it becomes possible to attach easily.

Furthermore, it is preferable that the linear member is bent and formed so that the end portion is fixed to the side wall portion and disposed between the end portion of the rotation shaft of the rotation link and the webbing.
According to the above configuration, since the linear member is bent, only the portion necessary for preventing contact between the end portion of the rotating shaft and the webbing is projected from the side wall portion. Can be used effectively.

Further, the webbing is fixed to the buckle holding part provided on the side wall part and is disposed through a slit formed in the seat cushion, and the buckle holding part and the slit are configured to suppress the contact. It may be formed on the center axis side of the rotation link from the portion.
In this way, the slit position determined for holding the seated person and the position of the buckle holding part of the rotating link determined for stable support of the seat are the center axis of the rotating link rather than the contact suppressing part. Even if it is a case where it forms in the side, it can suppress that webbing touches a rotation link by a contact control part.

In addition, the rotating link is fixed to both wall surfaces of the side wall portion where the two webbings are opposed to each other, and each of the rotating link between the end portion of the rotating shaft of the rotating link and the two webbings. It is preferable that the contact suppressing portion is formed on the surface.
Thus, when the rotation link is fixed to both wall surfaces of the side walls facing the two webbings, for example, when a force pulling the rotation link from the two webbings is generated at the time of a front collision, A load is applied to the side wall portion of the rotating link in a balanced manner, and the force can be efficiently received. Further, two webbings can be efficiently supported together by one rotation link.

Further, it is preferable that a belt cover formed so as to cover the rear of the webbing is attached to the side wall portion.
Thus, the webbing can be protected by attaching the belt cover formed so as to cover the rear of the webbing to the side wall part. In particular, when the rotation link is folded around the rotation axis with respect to the seat cushion, even if the webbing becomes loose due to the rotation link and the seat cushion approaching, the belt cover suppresses the spread and rotation The webbing can be prevented from being worn by touching the end of the shaft.

The belt cover is preferably formed integrally with a rotation link cover that covers the rotation link.
Thus, since the belt cover is formed integrally with the rotation link cover that covers the rotation link, the rotation link and the webbing can be protected, and the belt cover can be manufactured and rotated. Assembling to the link becomes easy.

ADVANTAGE OF THE INVENTION According to this invention, the vehicle seat which can prevent that the webbing of a seatbelt touches a rotation link, and can suppress the damage can be provided.
Moreover, according to this invention, by using a linear member with a small occupied space as a contact suppression part, interference with another member can be avoided and it can attach easily.
Further, according to the present invention, since the linear member is formed to be bent, only the portion necessary for preventing contact between the end portion of the rotating shaft and the webbing is projected from the side wall portion. , Space can be used effectively.
Moreover, according to this invention, a load can be applied to the side wall part of a rotation link with sufficient balance, and force can be received efficiently. Further, two webbings can be efficiently supported together by one rotation link.
Further, according to the present invention, it is possible to suppress the webbing from being spread by the belt cover and to prevent the webbing from being worn by touching the end of the rotating shaft.
In addition, according to the present invention, the rotation link and the webbing can be protected, and the belt cover can be easily manufactured and assembled to the rotation link.

It is a schematic diagram explaining the state which folds the vehicle seat which concerns on embodiment of this invention. It is the schematic diagram which looked at the vehicle seat from the lower side. It is a figure which expands and shows the fixed site | part of the webbing in a rotation link.

Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to the drawings. Here, FIG. 1 is a schematic diagram illustrating a state in which a vehicle seat (hereinafter simply referred to as a seat) S according to an embodiment of the present invention is folded, and FIG. 2 is a schematic diagram of the seat S viewed from below. These are the figures which expand and show the fixing | fixed part of webbing 30a, 30b in the rotation link 20. FIG.
In the following description, the front-rear direction means the front-rear direction (full length direction) of the vehicle, and corresponds to the front-rear direction of the vehicle seat. The width direction means the left-right direction (horizontal width direction) of the vehicle and corresponds to the width direction of the vehicle seat.

  The seat S according to the present embodiment constitutes a rear seat of the vehicle, and is configured to be foldable rearward as shown in FIG.

  The seat S includes a seat portion S1, and the seat portion S1 includes a seat cushion 1 on which an occupant sits and a seat back 2 that supports the occupant from the back side. A recessed storage space T1 formed on the vehicle body floor T is provided behind the seat S. The interior of the storage space T1 corresponds to the storage position, and each sheet S is configured to be stored in the storage space T1.

  The storage operation of the seat S will be outlined. When the seat S is in a state before storage, that is, in a seatable state (also referred to as a use state) indicated by a solid line in FIG. The seat back 2 tilts forward so that the seat S1 is folded. Thereafter, the folded seat portion S1 moves in the direction of sinking backward, as indicated by a two-dot chain line in FIG. Finally, the entire sheet S is stored in the storage space T1.

  As described above, as shown in FIG. 2, the seat S includes three link members (the rotation link 20, the outer link 22, and the guide link 23) as a configuration for moving the seat portion S <b> 1 toward the storage space T <b> 1. A piston damper 24 having an urging force for assisting lifting of the seat cushion 1.

  The rotation link 20, the outer link 22, the guide link 23, and the piston damper 24 are attached to the floor side base member T3 attached to the storage space T1 side and the seat cushion 1 so that the respective end portions thereof can be turned. .

  In particular, as shown in FIG. 3, the rotation link 20 is rotatably attached to a rear frame 1 a forming a part of the skeleton of the seat cushion 1 by a rotation shaft 21 b. More specifically, the rotation shaft 21b is attached to a pair of stays 1b welded so as to extend substantially forward from the rear frame 1a extending in the seat width direction, that is, substantially parallel to the rear frame 1a. It has been.

  Each of the side wall portions 21a in the sheet width direction of the rotation link 20 is formed by being bent in a substantially C shape so as to bulge forward in the usage state of the sheet S. A wire 21d is welded so as to extend outward from the central axis of the sheet in the sheet width direction.

The wire 21d corresponds to a linear member and a contact suppressing portion according to the present invention, and is for preventing contact between webbing 30a, 30b, which will be described later, and the rotating shaft 21b.
In particular, the wire 21d has a linear shape as described above and is bent. For this reason, according to the wire 21d, a portion necessary for preventing contact between the end portion of the rotating shaft 21b and the webbing 30a, 30b while avoiding interference with other members by reducing the occupied space. Only can protrude from the side wall part 21a.
Furthermore, in order to suppress contact between the webbing 30a, 30b and the rotating shaft 21b, the wire 21d extends to the upper side of the rotating shaft 21b and is attached to the side wall portion 21a.

Further, a link cover 21e is attached to the rotation link 20 so as to cover a part of the wire 21d to an end side connected to the floor side base member T3 of the rotation link 20.
The link cover 21e has a notch 21f on the side close to the seat cushion 1 at the end of the seat cushion 1 on the rear frame 1a side. By attaching the webbing 30a, 30b, which will be described later, to the notches 21f, the attachment work is facilitated.
Further, the link cover 21e is formed such that its end 21g is expanded so as to extend along the outer side of the wire 21d in the sheet width direction. In the link cover 21e, the end portion 21g is expanded in this manner to cover the wire 21d, so that expansion of the outer side in the sheet width direction due to the bending of the webbing 30a, 30b can be suppressed.

A bracket 30d is attached to each of the side wall portions 21a in the seat width direction of the rotation link 20 by bolts 30e and nuts 30f closer to the floor side base member T3 than the rotation shaft 21b.
The bracket 30d corresponds to the buckle holding part according to the present invention, and is for attaching the webbing 30a, 30b of the seat belt 30 to the rotating link 20. The bracket 30d is formed in a plate shape bent into a crank shape, and has a through hole 30g through which the webbings 30a and 30b are passed.

  In addition, the size (thickness) of the rotation link 20 is larger than the size (thickness) of the outer link 22 and the guide link 23. Here, for example, during a frontal collision of the vehicle, a large load is applied from the seat belt 30 to the attachment target of the bracket 30d of the webbing 30a, 30b. For this reason, it is desirable that the attachment target of the bracket 30d of the webbing 30a, 30b is the rotating link 20 having a larger size and higher rigidity than the outer link 22, the guide link 23, and the like.

  And two webbing 30a, 30b is being fixed to the side wall part 21a which the rotation link 20 opposes via the bracket 30d. For this reason, for example, when a force pulling the rotating link 20 from the two webbings 30a and 30b is generated at the time of a frontal collision of the vehicle, a load is applied to the side wall portion 21a of the rotating link 20 in a balanced manner and the force is efficiently received. be able to. Further, the single web link 30 can efficiently support the two webbings 30a and 30b together.

In the seat cushion 1 in the vicinity of the rotation link 20, slits 10a and 10b penetrating the upper and lower surfaces are formed at intervals in the width direction.
The slits 10a and 10b are for allowing the webbings 30a and 30b to be inserted into the seat cushion 1 in order to fix the proximal end side of the webbing 30a and 30b with the buckle 30c connected to the distal end side to the rotary link 20. .

  The slit 10a is formed closer to the central axis of the rotary link 20 than one end of the rotary shaft 21b in the sheet width direction because of the position where the buckle 30c connected to the webbing 30a passing through the slit 10a is pulled out. ing.

When the webbing 30a is passed through the slit 10a formed in this way and the webbing 30a is fixed to the side wall portion 21a of the rotation link 20 where the wire 21d or the like is not formed by the bracket 30d, for example, at one end of the rotation shaft 21b. The webbing 30a may be touched.
In particular, when the seat S is changed from the use state to the housed state, the rotation link 20 approaches the seat cushion 1, so that the webbing 30 a fixed to the rotation link 20 is bent and increased. For this reason, if the webbing 30a and one end of the rotating shaft 21b are in contact with each other, a frictional force is applied and the webbing 30a may be worn.

  On the other hand, when the wire 21d is attached to the side wall portion 21a of the rotation link 20, the webbing 30a comes into contact with the wire 21d at a position separated from one end portion of the rotation shaft 21b. For this reason, even when the sheet S is switched between the use state and the storage state, the webbing 30a can be prevented from coming into contact with one end portion of the rotating shaft 21b.

  In particular, in this function, in the sheet width direction, the slit 10a from which the webbing 30a is pulled out is closer to the central axis side of the rotary link 20 than the rotary shaft 21b, and the connecting portion of the webbing 30a to the bracket 30d is the rotary shaft 21b. Even if it exists in the center axis side of the rotation link 20, it is exhibited. That is, according to the wire 21d, the webbing 30a is prevented from touching the rotating shaft 21b without being affected by the position of the slit 10a that is inevitably determined in order to support the seated person by the seat belt 30. Can do.

  In addition, the slit 10b has a pull-out position of the buckle 30c connected to the webbing 30b that passes through the slit 10b, and therefore, from the other end of the rotation shaft 21b with respect to the central axis of the rotation link 20 in the sheet width direction. Is also formed on the outside.

Unlike the webbing 30a, when the webbing 30b is passed through the slit 10b thus formed and the webbing 30b is fixed to the side wall 21a of the rotation link 20, the webbing 30b touches the other end of the rotation shaft 21b. It may be in a state that is not. This is because, unlike the slit 10a through which the webbing 30a passes, the slit 10b is formed outside the end of the rotating shaft 21b in the sheet width direction.
However, as described above, when the seat S is placed in the retracted state, the webbing 30b that is bent by the rotation link 20 approaching the seat cushion 1 touches the other end of the rotation shaft 21b, A frictional force may be applied and the webbing 30b may be worn.

  For this reason, even if it is a case where the sheet | seat S is switched between a use state and a storage state by the wire 21d being attached to the side wall part 21a of the rotation link 20, the wire 21d contacts the webbing 30b. It is possible to prevent the webbing 30b from being worn.

  In the above embodiment, the vehicle seat of the present invention has been mainly described. However, the above embodiment is for facilitating the understanding of the present invention, and does not limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents.

  For example, although it has been described that the wire is used as the contact suppression unit according to the present invention, it is only necessary to avoid contact with the end of the rotating shaft by contacting the rotating shaft at a position separated from the rotating shaft, and is not limited to the wire. It may be in the form of a plate or a protruding block.

Moreover, in the said embodiment, the object which suppresses a contact with webbing with a wire demonstrated as what was an edge part of the rotating shaft of a rotation link. Since the end of the rotating shaft protrudes from other parts, such a configuration is most effective in preventing wear of the webbing.
Further, when there is an edge at a portion other than the end portion of the rotation shaft in the rotation link, wear may occur even when the webbing comes into contact with the edge. Therefore, it is more preferable that the portion is not touched. .

S Seat S1 Seating part T Car body floor T1 Storage space T3 Floor side base member 1 Seat cushion 1a Rear frame 1b Stay 2 Seat back 10 Slit 20 Rotating link 21a Side wall part 21b Rotating shaft 21d Wire (Linear member, Contact suppressing part) )
21e Link cover 21f Notch 21g End 22 Outer link 23 Guide link 24 Piston damper 30 Seat belt 30a, 30b Webbing 30c Buckle 30d Bracket (Buckle holding part)
30e Bolt 30f Nut 30g Through hole

Claims (8)

A vehicle seat comprising a seat cushion and a pivot link disposed below the seat cushion, the pivot link being foldable by pivoting in a direction close to the seat cushion,
On the side wall of the pivot link,
A buckle holding part for holding a buckle for locking a seat belt worn by a seated person of the vehicle seat via a webbing;
A vehicle seat, comprising: a contact suppressing portion that is in contact with the webbing at a position separated from the rotation link and suppresses contact between the webbing and the rotation link. An end portion of the rotation shaft of the rotation link passes through the side wall portion of the rotation link in the width direction of the vehicle seat,
The said contact suppression part contact | abuts with the said webbing in the position spaced apart from the edge part of the said rotating shaft, and suppresses the contact with the said webbing and the edge part of the said rotating shaft. Vehicle seats.   The vehicle seat according to claim 1, wherein the contact suppressing portion is made of a linear member.   The linear member is formed to be bent so that an end portion is fixed to the side wall portion and disposed between an end portion of a rotation shaft of the rotation link and the webbing. The vehicle seat according to claim 3. The webbing is fixed to the buckle holding part provided on the side wall part, and is disposed through a slit formed in the seat cushion.
5. The vehicle seat according to claim 1, wherein the buckle holding part and the slit are formed closer to a center axis side of the rotation link than the contact suppressing part. The rotating link is fixed to both wall surfaces of the side wall portion where the two webbings face each other,
The said contact suppression part is each formed between the edge part of the rotation axis | shaft of the said rotation link, and two said webbing, The Claim 1 thru | or 5 characterized by the above-mentioned. Vehicle seat.   The vehicle seat according to any one of claims 1 to 6, wherein a belt cover formed to cover the rear of the webbing is attached to the side wall portion.   The vehicle seat according to claim 7, wherein the belt cover is formed integrally with a rotation link cover that covers the rotation link.

Images