JP6677600B2 - Seat for flip-up type vehicle and locking mechanism for seat for flip-up type vehicle - Google Patents

Description

  The present invention relates to a vehicle seat, and more particularly to a seat locking mechanism that is effective when applied to a flip-up vehicle seat that can be folded and stored when not in use.

  The flip-up vehicle seats used in the third seats (third-row seats) of van-type automobiles, etc. are folded up and stored, with the seat back (back) facing the seat cushion (seat surface). Then, it is flipped up in the lateral direction (left and right vehicle body sides) and fixed to the vehicle body by a lock mechanism such as a fixing strap.

  The seat is equipped with a rigid metal frame material (seat frame) and legs to support the weight of the occupant, and the weight of the seat is also heavy. Will hang. In addition, vibrations and shocks that occur as the vehicle travels also apply to the lock mechanism. For this reason, the development of a lock mechanism for securely and securely fixing the seat is being promoted.

  As a background art in the present technical field, for example, there is a technique as described in Patent Document 1. Patent Literature 1 discloses “a horizontal flip-up sheet that can prevent the locking device that fixes the flipped sheet from coming off without causing a sound to be generated from the locking device that fixes the flipped sheet even if it swings.” Is disclosed.

  Patent Document 2 discloses that “the number of components required for attaching the strap member to the lower surface of the seat cushion can be reduced, and in addition to the attachment, the leg member is rotatably and slidably incorporated into the lower surface of the seat cushion. A flip-up seat for an automobile that can eliminate the backlash of the frame-shaped cover that covers the rails is disclosed.

Japanese Patent No. 4516575 JP 2002-301972 A

  In the flip-up seat lock mechanism, as described above, the reliability of fixing the seat is required, but there is also a demand for cost reduction by reducing the number of parts of the lock mechanism. Further, reducing the number of components is advantageous also in preventing troubles of the lock mechanism due to aging of the components when used for a long time.

  In Patent Literature 1, an elastic body is provided on a strap for holding a sheet to absorb vibration. However, the number of parts of the holding strap mechanism is large, and there is a concern that the elastic body may be deteriorated when used for a long time. You.

  In Patent Document 2, although the number of components of the strap member is small, since the seat and the strap member are fixed with one screw, there is a disadvantage in terms of reliability of fixing the seat.

  SUMMARY OF THE INVENTION It is an object of the present invention to provide a flip-up type vehicle seat that has a relatively simple structure and that can securely fix the seat to the vehicle body when the seat is stored, and a lock mechanism thereof.

In order to solve the above problem, the present invention is a flip-up type vehicle seat including a fixing strap for fixing the seat to the vehicle body when the seat is stored, wherein the fixing strap includes an anchor plate at a connection portion with the seat. A first opening through which the fixing strap penetrates at a coupling portion with the fixing strap, wherein the anchor plate has a substantially L-shaped cross section; And at least two second openings provided on the end side of the anchor plate, wherein the fixing strap has an end fixed between the first opening and the second opening. the said second opening to be received only by the anchor plate tension to the vehicle body direction of the fixed strap when fixing the sheet to the vehicle body a It is provided so as to pass through the region between the ends of the car plate, the anchor plate, and the anchor plate and the coupling portion of the fastening straps is covered with the resin cover, the fixing straps, the resin cover It is characterized by being provided through the provided slit .

Further, the present invention is a flip-up type vehicle seat locking mechanism for fixing a seat to a vehicle body when the seat is stored, wherein the locking mechanism includes a fixing strap, an anchor plate connecting the fixing strap and the seat, Wherein the anchor plate has a substantially L-shaped cross section, and a first opening through which the fixing strap penetrates at a coupling portion with the fixing strap; and the anchor plate is larger than the first opening. And at least two second openings provided on the end side of the vehicle, wherein the fixing strap has an end fixed between the first opening and the second opening, and the seat is attached to the vehicle body. the tension in the vehicle body direction of the fixed strap and the anchor plate only the second opening to be received by the end of the anchor plate when fixing the Is provided so as to pass through the region, the anchor plate, and further comprising the anchor plate and the resin cover for covering the coupling portion of the fastening straps, the fixing strap through the slit formed in the resin cover It is characterized by being provided .

  ADVANTAGE OF THE INVENTION According to this invention, it can implement | achieve the flip-up type vehicle seat which can fix a sheet | seat to a vehicle body reliably at the time of sheet storage with a comparatively simple structure.

  Further, it is possible to realize a flip-up type vehicle seat lock mechanism capable of reducing the number of parts and reducing the manufacturing cost.

  Problems, configurations, and effects other than those described above will be apparent from the following description of the embodiments.

It is a perspective view showing the whole outline of the vehicular seat concerning one embodiment of the present invention. FIG. 2 is a view (bottom view) as viewed in the direction of arrows B-B ′ in FIG. 1. It is the A section enlarged view in FIG. FIG. 4 is a sectional view taken along the line C-C ′ in FIG. 3. It is an enlarged view corresponding to the A section of FIG. 1 in the conventional seat. FIG. 6 is a sectional view taken along line D-D ′ of FIG. 5.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and detailed description of overlapping portions will be omitted.

  With reference to FIG. 1 and FIG. 2, an overall outline of a flip-up type vehicle seat of the present embodiment will be described. FIG. 1 is a perspective view of a vehicle seat 1 according to the present embodiment. FIG. 2 is a diagram (bottom view) of the sheet of FIG. 1 viewed from the B-B ′ direction. In each drawing, the skin material of the sheet and wading (filling) are omitted for easy understanding of the structure.

  As shown in FIG. 1, when the vehicle seat 1 according to the present embodiment is not used as a seat, the seat back portion 4 is tilted down to the seat cushion portion 3 by the reclining mechanism 5, and the seat back portion 4 is moved in the lateral direction (the direction of the arrow in FIG. 1). This is a flip-up vehicle seat that is flipped up and fixed to a vehicle body. The seat cushion portion 3 and the seat back portion 4 are provided with a seat frame 2 which is a frame material of the seat. The seat frame 2 of the seat cushion portion 3 is connected to a turning mechanism 7 via a turning portion (hinge) 6, and is turned when the seat is flipped up in the lateral direction (the direction of the arrow in FIG. 1) when the seat is stored. With the moving part (hinge) 6 as the center of rotation, the seat rotates in the lateral direction (the direction of the arrow in FIG. 1).

  On the bottom surface side of the seat cushion 3, a leg 8 for supporting the seat when used as a seat is provided. The seat frame 2 and the legs 8 are formed of a highly rigid metal such as iron to support the weight of the occupant. As shown in FIG. 2, a fixing strap 9 which is a part of a lock mechanism for flipping up the seat and fixing the seat to the vehicle body is provided on the bottom side of the seat cushion portion 3. The flipped seat is fixed to the vehicle body by engaging an end of the fixing strap 9 opposite to the end connected to the seat with a hook or the like (not shown) provided on the vehicle body. .

  First, a conventional flip-up seat lock mechanism will be described with reference to FIGS. 5 and 6 for comparison. FIG. 5 is an enlarged view of a portion A of the conventional vehicle seat corresponding to FIG. FIG. 6 is a sectional view taken along the line D-D 'of FIG. 5, and shows details of a connecting portion between the fixing strap 9 of the lock mechanism and the seat.

  As shown in FIG. 5, the conventional flip-up seat locking mechanism includes a load receiving wire 17 fixed to the seat frame 2 by welding, an anchor plate B18 fixed to the seat frame 2 by bolts, and FIG. It is composed of a fixing strap 9 not shown. One opening 20 is provided in the anchor plate B18. The load receiving wire 17 and the anchor plate B18 are covered with a resin cover 10 as a protective cover.

  The configuration of FIG. 5 will be described in more detail with reference to FIG. The anchor plate B18 is connected and fixed to a bracket 13 connected to the seat frame 2 by bolts 12 and nuts 14. An opening 20 is provided in the anchor plate B18. A load receiving wire 17 fixed to the seat frame 2 by welding is disposed near the anchor plate B18. The anchor plate B18 and the load receiving wire 17 are covered with a resin cover 10 serving as a protective cover, and the fixing strap 9 is disposed through a slit 16 provided in the resin cover 10.

  The fixing strap 9 passes between the load receiving wire 17 and the end of the anchor plate B18 and penetrates through the opening 20 of the anchor plate B18 on the inner side of the resin cover 10. The end portion is sewn by the sewn portion 15 so as to be fixed between the two.

  In the conventional flip-up type seat, the locking mechanism on the seat side is configured as shown in FIG. The tension is generated by the load receiving wire 17 and the anchor plate B18. The load applied to the fixing strap 9 when fixing the seat to the vehicle body is applied in the direction of the arrow in FIG. Therefore, in the conventional flip-up seat locking mechanism, it is necessary to provide both the load receiving wire 17 and the anchor plate B18.

  Next, a lock mechanism of the flip-up type seat according to the present embodiment will be described with reference to FIGS. FIG. 3 is an enlarged view of a portion A in FIG. FIG. 4 is a cross-sectional view taken along the line C-C 'in FIG. 3, showing details of a connecting portion between the fixing strap 9 of the lock mechanism and the seat.

  As shown in FIG. 3, the locking mechanism of the flip-up seat according to the present embodiment includes an anchor plate A11 fixed to the seat frame 2 with bolts 12, and a fixing strap 9 not shown in FIG. . Two openings 19 are provided in the anchor plate A11. The cross section of the anchor plate A11 is substantially L-shaped, and the two openings 19 are provided near the corners of the L-shape and on the surface not fixed with the bolts 12. The anchor plate A11 is covered with a resin cover 10 which is a protective cover.

  The configuration of FIG. 3 will be described in more detail with reference to FIG. The anchor plate A11 has one substantially L-shaped flat surface connected and fixed to a bracket 13 connected to the seat frame 2 by bolts 12 and nuts 14. Two openings 19 are provided in the anchor plate A11. The anchor plate A11 is covered with a resin cover 10 serving as a protective cover, and the fixing strap 9 is disposed through a slit portion 16 provided in the resin cover 10.

  The fixing strap 9 is disposed inside the resin cover 10 so as to pass through the opening 19 provided on the end side of the anchor plate A11 from left to right in FIG. The end portion is sewn by the sewn portion 15 so as to be fixed to. In other words, the fixing strap 9 has an end fixed between the two openings of the anchor plate A11, and the fixing strap 9 is fixed to the anchor plate A11 on the opposite side to the direction in which the tension is applied to the fixing strap 9 when fixing the seat to the vehicle body. It is provided so as to pass through a region between the opening 19 on the end side and the end of the anchor plate.

  The structure of the anchor plate A11 as shown in FIG. 4, that is, the cross section is substantially L-shaped, and two openings 19 through which the fixing strap 9 penetrates and which are fixed by sewing are provided. By arranging the strap 9, when the seat is fixed to the vehicle body by the fixing strap 9, the tension (tension) of the fixing strap 9 in the vehicle body direction can be received only by the anchor plate A <b> 11. In addition, since the load of the fixing strap 9 is received only by the anchor plate A11, it is preferable that the anchor plate A11 is integrally formed of a highly rigid metal material such as an iron material.

  As described above, since the load of the fixing strap 9 conventionally supported by both the load receiving wire 17 and the anchor plate B18 can be supported only by the anchor plate A11, it is not necessary to provide the load receiving wire 17. The number of parts can be reduced. Further, since the load receiving wire 17 is abolished, welding of the load receiving wire 17 to the seat frame 2 becomes unnecessary, so that the manufacturing cost can be significantly reduced.

  Further, by reducing the number of parts, it is possible to reduce the possibility of trouble due to aging of the parts when used for a long period of time, and furthermore, the anchor plate A11 is integrally formed by using a rigid metal material such as an iron material. By doing so, the seat can be securely fixed to the vehicle body when the seat is stored.

  Note that the present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described above. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of one embodiment can be added to the configuration of another embodiment. Further, for a part of the configuration of each embodiment, it is possible to add / delete / replace another configuration.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle seat, 2 ... Seat frame, 3 ... Seat cushion part, 4 ... Seat back part, 5 ... Reclining mechanism, 6 ... Rotating part (hinge), 7 ... Rotating mechanism, 8 ... Leg part, 9 ... Fixing strap, 10 resin cover, 11 anchor plate A, 12 bolt, 13 bracket, 14 nut, 15 sewing part, 16 slit part of resin cover, 17 load receiving wire, 18 anchor plate B , 19 ... openings (of anchor plate A), 20 ... openings (of anchor plate B).

Claims (6)

A flip-up vehicle seat including a fixing strap that fixes the seat to the vehicle body when the seat is stored,
The fixing strap is connected to the seat via an anchor plate at a connection portion with the seat,
The anchor plate has a substantially L-shaped cross section, and a first opening through which the fixing strap penetrates at a joint with the fixing strap, and an end portion of the anchor plate that is closer than the first opening. Having at least two openings of a second opening provided on the side,
The fixing strap has an end fixed between the first opening and the second opening,
The fixing strap is provided so as to pass through a region between the second opening and an end of the anchor plate so that the tension of the fixing strap in the vehicle body direction can be received only by the anchor plate when the seat is fixed to the vehicle body. It is,
The anchor plate, and a joint portion between the anchor plate and the fixing strap are covered with a resin cover,
The flip-up vehicle seat , wherein the fixing strap is provided through a slit provided in the resin cover . The flip-up vehicle seat according to claim 1,
The flip-up type vehicle seat, wherein the anchor plate is integrally formed of metal. The flip-up vehicle seat according to claim 1 ,
A flip-up type vehicle seat, wherein the fixing strap and the seat are connected by fixing a surface of the anchor plate different from the surface to which the fixing strap is fixed to a seat frame. A flip-up type vehicle seat lock mechanism for fixing the seat to the vehicle body when the seat is stored,
The locking mechanism includes a fixing strap,
An anchor plate connecting the fixing strap and the seat,
The anchor plate has a substantially L-shaped cross section, and a first opening through which the fixing strap penetrates at a connection portion with the fixing strap, and an end portion of the anchor plate which is larger than the first opening. Having at least two openings of a second opening provided on the side,
The fixing strap has an end fixed between the first opening and the second opening,
The fixing strap is provided so as to pass through a region between the second opening and an end of the anchor plate so that the tension of the fixing strap in the vehicle body direction can be received only by the anchor plate when the seat is fixed to the vehicle body. It is,
The anchor plate, further comprising a resin cover that covers the joint portion of the anchor plate and the fixing strap,
The locking mechanism for a flip-up vehicle seat, wherein the fixing strap is provided through a slit provided in the resin cover . A lock mechanism for a flip-up vehicle seat according to claim 4 ,
A locking mechanism for a flip-up vehicle seat, wherein the anchor plate is integrally formed of metal. A lock mechanism for a flip-up vehicle seat according to claim 4 ,
A locking mechanism for a flip-up type vehicle seat, wherein the fixing strap and the seat are connected by fixing a surface of the anchor plate different from a surface to which the fixing strap is fixed to a seat frame. .

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