JP5671996B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat. More specifically, the present invention relates to a vehicle seat in which a large-diameter rod having a strength capable of receiving a predetermined large load input at the time of a vehicle collision is bridged between rear portions of both side skeletons of a seat cushion.

  2. Description of the Related Art Conventionally, in a vehicle seat, there is a configuration in which reinforcing rods are bridged between skeletons on both side portions of a seat cushion (see Patent Document 1). This rod is provided so as to connect the rear parts of both side skeletons of the seat cushion, and it is used to engage any equipment provided on the seat cushion, such as a wire support that supports the cushion pad from below Can be used as well.

JP-A-9-109755

  However, in the prior art, the lower space of the rear portion of the seat cushion is narrowed by the rod, and there is a problem that the space in which the seated person of the seat on the row side can put his / her foot is narrowed thereafter. The present invention was devised as a solution to the above-mentioned problems, and the problem to be solved by the present invention is to provide a seat cushion while increasing the placement position of the rods and widening the foot space. It is to be able to suitably engage any equipment provided in a region between the rear portions of both side frames.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
A first invention is a vehicle seat in which a large-diameter rod having a strength capable of receiving a predetermined large load input at the time of a vehicle collision is bridged between rear portions of both side skeletons of a seat cushion. . In the region between the rear portions of both side skeletons of the seat cushion, some equipment provided in the seat cushion is engaged and supported. The large-diameter rod is disposed at a position higher than a predetermined engagement position at which any of the above-mentioned equipment can be engaged, so that a space between the rear lower part of the seat cushion and the floor is expanded. A small-diameter rod having a diameter smaller than that of the large-diameter rod is bridged between the rear portions of both side skeletons, so that the equipment is engaged and supported by the small-diameter rod. Yes.

  According to the first aspect of the present invention, the large-diameter rod is disposed at a position higher than the predetermined engagement position at which any equipment provided on the seat cushion can be engaged, so that the rear of the seat cushion. The space between the lower part and the floor is expanded. This space functions as a foot setting space where a seated person on the back row seat can put his / her foot. As a result, it is impossible to adopt a configuration in which any of the above-mentioned equipment is engaged with and supported by the large-diameter rod, but the small-diameter rod is bridged between the rear portions of both side skeletons, so that The equipment can be engaged and supported. Therefore, even if the large-diameter rod is set to a position where it is retracted to a position where it cannot be engaged with any equipment as described above, it has a strength enough to engage and support this equipment. By providing support with a small-diameter rod, the foot space between the floor and the floor can be expanded more widely. In this way, while increasing the position where the rod (large diameter rod) is disposed to widen the foot space, it is preferable that any equipment provided on the seat cushion be placed in the region between the rear portions of both side skeletons. Can be engaged.

  According to a second aspect of the present invention, in the first aspect described above, any equipment is a wire that extends in the front-rear direction of the seat between both side skeletons in order to support a cushion pad provided on the seat cushion from the lower side. Yes, the wire has a rear part fixed to the upper part of the small-diameter rod and joined, and a rearward extension part extending further from the fixed part with the small-diameter rod is bent upward. Yes.

  According to the second aspect of the invention, the wire that supports the cushion pad from the lower side has the rearward extending portion that extends further rearward from the fixed portion with the small-diameter rod, thereby supporting the cushion pad from the lower side. Wide support surface can be secured. In addition, since the portion extending backward from the fixed portion of the wire with the small-diameter rod is bent upward, the foot space can be secured more widely. .

  According to a third invention, in the second invention described above, the wire is formed in a shape in which two line portions extending in the front-rear direction of the sheet are arranged in the width direction by being bent back in a U shape. The U-shaped portion of the wire is arranged so that the portion bent back in the U-shape is on the rear side of the seat, and further straddles the upper portion of the small-diameter rod and the two wire portions constituting the wire extension portion. Another wire formed in a U shape having a wider width than the shape of is fixedly provided.

  According to the third aspect of the invention, the rear portion of the wire is located at the rear end of the wire by arranging the portion bent back in the U shape of the wire to be on the rear side of the seat. Formed in a form connected to each other at the part. Further, another wire formed in a U-shape having a width wider than the U-shape of the wire is fixed to the rear extension of the wire so as to be fixed between the rods with the small diameter. By doing so, it is possible to secure a wider foot space while securing a wider support surface on the rear side that supports the cushion pad from the lower side.

1 is a perspective view illustrating an appearance of a vehicle seat according to a first embodiment. It is the perspective view which showed the frame | skeleton structure of the vehicle seat. It is the III-III sectional view taken on the line of FIG.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the configuration of the vehicle seat according to the first embodiment will be described with reference to FIGS. As shown in FIG. 1, the vehicle seat of the present embodiment is disposed as a second row seat of a vehicle having a three row seat, and a seat back 2 in which a seat body 1 is a backrest, A seat cushion 3 serving as a seating portion and a headrest 4 serving as a support for the head are provided. The seat back 2, the seat cushion 3, and the headrest 4 are respectively provided with cushion pads 2B, 3B, 4A so as to cover their skeleton structure, and further, a cloth cover so as to cover the entire surface thereof. 2C, 3C, and 4B are covered. The seat body 1 has a configuration in which the outer side and the inner side of the left and right sides of the seat cushion 3 are each covered with a resin shield SH.

  As shown in FIG. 2, the seat back 2 has a reclining device 5 in which the lower end portions of the left and right sides of the back frame 2 </ b> A constituting the skeleton each function as a rotation shaft device capable of stopping rotation. The cushion frame 3 </ b> A constituting the skeleton of the seat cushion 3 is connected to the rear end portions on both the left and right sides (the rear end portions of both side frames 3 </ b> A <b> 1 described later). Each of the reclining devices 5 is normally held in a rotation-stopped state in which the backrest angle of the seat back 2 is fixed, and a release lever 6 provided on the side of the seat cushion 3 on the entrance / exit door side (outside). In addition, when the shoulder lever 7 provided at the shoulder portion on the same side (outside) of the seat back 2 is pulled up, the rotation stop state is released and the seat back 2 is fixed at the backrest angle. It is like that.

  The release lever 6 is connected to the reclining device 5 through a release mechanism 6A composed of a plurality of link connection mechanisms, and the rotation stop state of each reclining device 5 is released by performing a pulling operation. ing. The shoulder lever 7 is connected to the release mechanism 6A by a cable 7A, and the rotation stop state of each reclining device 5 is released by performing a lifting operation. Here, the seat body 2 is moved to the forward tilt position by the operation of the shoulder lever 7 at the connecting portion between the seat back 2 and the seat cushion 3 on the inner side of the seat body 1, so that the seat body 1 is moved to the vehicle. A release mechanism 8A that releases the slide lock state of each of the pair of left and right slider devices 8 that are slidably connected to the floor F is provided.

  As a result, the seat body 1 is configured so that the slide lock state of each slider device 8 is also released by the operation in which the seat back 2 is tilted to the forward tilt position, and the seat back 2 is tilted forward. The entire seat body 1 is slid toward the vehicle front side in the compact posture state, and a boarding / alighting space for the rear row side seat (third row seat: not shown) can be widened. It should be noted that the slide lock state of each slider device 8 is a pull-up operation of a slide lock release lever 8B which is connected to a lock mechanism (not shown) of each slider device 8 and extends to the front lower portion of the seat cushion 3. It can be canceled also by performing.

  Here, in the vehicle seat of the present embodiment, as shown in FIG. 3, the space between the lower rear portion of the seat cushion 3 and the floor F is such that the seated person of the rear row side seat (not shown) has legs L It is set as a foot space LS in which can be entered. The foot space LS is configured such that the size of the foot cushion space LS is limited by the large-diameter rod 3A3 being bridged between the rear portions of both side frames 3A1 of the seat cushion 3. The rod 3 </ b> A <b> 3 is disposed so as to be retracted to a relatively high position, so that the foot L can be inserted deeply. Hereinafter, the arrangement structure of the large-diameter rod 3A3 will be described in detail together with the skeleton structure of the seat cushion 3.

  As shown in FIG. 2, the cushion frame 3A that forms the skeleton of the seat cushion 3 is bridged between a long plate-shaped side frame 3A1 that forms the skeleton of both the left and right side portions, and the front end portions of the side frames 3A1. The front frame 3A2 coupled to each other and the large-diameter rod 3A3 spanned between the rear portions of both side frames 3A1 and coupled to each other are assembled into one. Each of the side frames 3A1 includes a main body frame 3A1a that is elongated in the longitudinal direction of the seat, and an upper extension frame 3A1b that is coupled to the rear end of the main body frame 3A1a and extends upward (see FIG. 3). . As for each side frame 3A1, as shown in FIG. 2, the upper end part of each said upward extension flame | frame 3A1b is each connected with both the side parts of the back frame 2A of the seat back 2 by the reclining apparatus 5. As shown in FIG.

  The large-diameter rod 3A3 described above is provided so as to be bridged between the upwardly extending frames 3A1b of the side frames 3A1. This large-diameter rod 3A3 is formed of a circular steel pipe, and an ISOFIX-type wire (ISOFIX bar 3A4) for attaching a child seat is integrally formed at two positions in the vicinity of both ends near both side frames 3A1. It is joined. Here, the ISOFIX bar 3A4 is formed in a U-shaped shape, and both U-shaped leg portions are bent so as to come into surface contact from the upper surface to the rear surface of the large-diameter rod 3A3. Are integrally welded to the outer peripheral surface of the rod 3A3. The large-diameter rod 3A3 has a large diameter so as to receive a large load from a child seat attached to each ISOFIX bar 3A4 in the event of a vehicle collision. It has a structure with structural strength.

  A small-diameter rod 3A5 is provided between the rear portions of the side frames 3A1 so as to bridge and support a part of the support wire 3A6 that supports the cushion pad 3B from below. . Here, the support wire 3A6 corresponds to the “wire” of the present invention. The small-diameter rod 3A5 is formed of a circular steel pipe and has a diameter smaller than that of the large-diameter rod 3A3 to the extent that it has the structural strength necessary to support the support wire 3A6 that supports the cushion pad 3B from below. It is formed with. The small-diameter rod 3A5 is formed in a shape in which both ends are bent in a crank shape with respect to the central portion to which the support wire 3A6 is coupled. Then, both ends are applied to the upper surface of the body frame 3A1a of each side frame 3A1 that is bent into a flange shape, and arc welding is performed along the applied portion, whereby the small-diameter rod 3A5. Both end portions of the side frames 3A1 are firmly joined and fixed to the main body frame 3A1a of each side frame 3A1.

  In other words, since the small-diameter rod 3A5 has the short outer peripheral length by adopting the above-described coupling structure, for example, the small-diameter rod 3A5 is passed through each side frame 3A1 and its through-surface is welded. Even with such a configuration, even if a sufficient bonding strength (bonding area) cannot be secured, a sufficient bonding area can be secured and a sufficient bonding strength can be obtained. The small-diameter rod 3A5 is provided so that the center portion bent in a crank shape from the joint portions on both end sides described above is directed to the lower rear side of the seat with respect to the both ends. The setting position of the central portion of the small-diameter rod 3A5 is set as a position (corresponding to the “predetermined engagement position” in the present invention) at which the above-described support wire 3A6 can be engaged and supported. Has been. The large-diameter rod 3A3 described above is formed in a straight circular tube shape, is penetrated by the upper extension frame 3A1b of each side frame 3A1, and each through-surface is joined and joined by arc welding. Yes. Since the large-diameter rod 3A3 has a long outer peripheral length in its cross section, sufficient bonding strength (bonding area) can be obtained even with the above-described bonding structure.

  Next, the configuration of the above-described support wire 3A6 will be described. The support wire 3A6 is formed of a metal wire, and is bent into a U shape so that two line portions extending in the front-rear direction of the sheet are arranged in the width direction. The support wire 3A6 is arranged so that the portion bent back in the U shape is on the rear side of the seat, and the ends of the two line portions extending toward the front side of the seat are on the front frame 3A2. It is bent so as to come into surface contact from the upper surface to the front surface, and is integrally welded and fixed to the outer peripheral surface of the front frame 3A2.

  And, the support wire 3A6 has its two line portions extending toward the rear side of the seat, the rear portion is set on the upper portion of the small-diameter rod 3A5, and is welded and fixed integrally by spot welding. Yes. The support wire 3A6 is formed in a shape in which a rear extending portion 3A6a extending further toward the rear side from a portion fixed to the small-diameter rod 3A5 is bent and jumped up in the middle of the seat. Has been. Thereby, as shown in FIG. 3, the support wire 3A6 has a shape in which the extending portion 3A6a is retracted upward so that the extension portion 3A6a does not interfere with the foot L inserted in the foot insertion space LS. In addition, even if the support wire 3A6 is extended to the rear side and the cushion pad 3B can be supported widely, a wide foot space LS can be secured. In addition, the support wire 3A6 is provided from the lower side by another wire (not shown) spanned between the side frames 3A1 at an appropriate position between the support frame 3A2 and the small-diameter rod 3A5. The structure is supported (not shown).

  Furthermore, as shown in FIGS. 2 to 3, the U-shape of the support wire 3 </ b> A <b> 6 straddles the upper part of the small-diameter rod 3 </ b> A <b> 5 and the two wire portions constituting the rear extension 3 </ b> A <b> 6 a of the support wire 3 </ b> A <b> 6. Another wire 3 </ b> A <b> 7 formed in a U shape having a width wider than the shape is provided so as to be bridged. The other wire 3A7 is also arranged so that the portion bent back in the U-shape is on the rear side of the seat, and the tip of the two line portions extending toward the front side of the seat has a small diameter rod 3A5. It is bent so as to come into surface contact from the upper surface to the front surface, and is integrally welded and fixed to the outer peripheral surface of the small-diameter rod 3A5 by spot welding. Then, the other wire 3A7 is set so that the portion bent back in the U-shape on the rear side is laterally passed over the two wire portions of the extension portion 3A6a of the support wire 3A6 described above. Then, these two wire portions are welded and fixed together by spot welding.

  Thereby, the support surface of the back side which supports cushion pad 3B from the downward side is widely formed by support wire 3A6 and another wire 3A7. The cushion pad 3B described above is in a state in which the rear edge 3B1 is in surface contact with the upper surface and the rear surface of the large-diameter rod 3A3 by covering the large-diameter rod 3A3 from above. It is formed in a hook-like shape to be covered, and is set in a state supported from below by a large-diameter rod 3A3. In addition, another wire 3A7 mentioned above is used as a hook for hooking the edge portion pulled on the bottom surface side of the cover 3C (see FIG. 1) to be put on the surface of the seat cushion 3 using a hook (not shown). Also comes to work. In the above-described seat back 2 (see FIG. 2), the cushion pad 2B is supported from the rear side by a wire 2A1 provided so as to be bridged in the back frame 2A.

  Thus, according to the vehicle seat of the present embodiment, the large-diameter rod 3A3 is at a position higher than a predetermined engagement position at which the support wire 3A6 that supports the cushion pad 3B from the lower side can be engaged. By being arranged, the space between the rear lower part of the seat cushion 3 and the floor F is expanded. This space functions as a foot insertion space LS in which a seated person on a back row side seat (not shown) can insert the foot L. As a result, the support wire 3A6 can be engaged with the large-diameter rod 3A3 and supported, but the small-diameter rod 3A5 is bridged between the rear portions of the side frames 3A1 of the seat cushion 3. The support wire 3A6 can be engaged with and supported by the small-diameter rod 3A5.

  Therefore, even if the large-diameter rod 3A3 is set at a position where the support wire 3A6 is retracted to the position where the support wire 3A6 cannot be engaged as described above, the support wire 3A6 can be engaged and supported. The support space LS between the floor F and the floor F can be expanded more widely by providing support by the small-diameter rod 3A5. As described above, the support wire 3A6 provided on the seat cushion 3 is disposed between the rear portions of the side frames 3A1 while increasing the placement position of the rod (large-diameter rod 3A3) to widen the foot space LS. It can be suitably engaged inside.

  In addition, the support wire 3A6 has a rear extending portion 3A6a that extends further rearward from the fixed portion with the small-diameter rod 3A5, thereby ensuring a wide rear support surface for supporting the cushion pad 3B from the lower side. Can do. In addition, a portion extending rearward from the fixed portion of the support wire 3A6 with the small-diameter rod 3A5 is bent upward so that the foot space LS can be widened. Can be secured.

  In addition, the rear extension 3A6a of the support wire 3A6 is located at the rear end of the support wire 3A6 by arranging the portion of the support wire 3A6 that is bent back in the U shape on the seat rear side. Formed in a form connected to each other at the part. Then, another wire 3A7 formed in a U-shape having a wider width than the U-shape of the support wire 3A6 with respect to the rear extension 3A6a of the support wire 3A6 is between the small-diameter rod 3A5. By being provided so as to straddle, it is possible to secure a wider foot space LS while securing a wider support surface on the rear side that supports the cushion pad 3B from the lower side.

  As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, in the above-described embodiment, the support wire 3A6 that supports the cushion pad 3B from the lower side is illustrated as “any equipment provided in the seat cushion” of the present invention. The equipment is not particularly limited as long as the equipment is provided so as to support the rear portions of both side skeletons of the cushion, and any equipment may be used. In addition, an ISOFIX wire (ISOFIX bar 3A4) is used as “a large-diameter rod having a strength capable of receiving a predetermined large load input at the time of a vehicle collision between the rear portions of both side skeletons of the seat cushion”. The large-diameter rod 3A3 having a structural strength capable of receiving a large load at the time of a vehicle collision received from a child seat attached to the ISOFIX bar 3A4 is illustrated as an example. ”May be a large-diameter rod having a strength capable of receiving a predetermined large load input at the time of a vehicle collision, and other types such as those that reinforce the cushion frame in order to increase the side impact strength of the cushion frame. You may provide the intensity | strength aiming at catching the predetermined heavy load input at the time of a vehicle collision.

DESCRIPTION OF SYMBOLS 1 Seat body 2 Seat back 2A Back frame 2A1 Wire 2B Cushion pad 2C Cover 3 Seat cushion 3A Cushion frame 3A1 Side frame (side skeleton)
3A1a Body frame 3A1b Upper extension frame 3A2 Front frame 3A3 Large diameter rod 3A4 ISOFIX bar 3A5 Small diameter rod 3A6 Support wire (wire)
3A6a Rear extension 3A7 Another wire 3B Cushion pad 3B1 Rear edge 3C Cover 4 Headrest 4A Cushion pad 4B Cover 5 Reclining device 6 Release lever 6A Release mechanism 7 Shoulder lever 7A Cable 8 Slider device 8A Release mechanism 8B Slide lock release lever SH Shield LS Footing space L Foot F Floor

Claims (3)

A vehicle seat in which a large-diameter rod having a strength capable of receiving a predetermined large load input at the time of a vehicle collision is bridged between the rear portions of both side skeletons of the seat cushion,
In the region between the rear portions of the both side skeletons of the seat cushion, some equipment provided in the seat cushion is engaged and supported,
While the large-diameter rod is disposed at a position higher than a predetermined engagement position at which any of the equipment can be engaged, a space between the rear lower portion of the seat cushion and the floor is expanded, The small-diameter rod having a smaller diameter than the large-diameter rod is bridged between the rear portions of the both side skeletons, and the equipment is engaged with the small-diameter rod .
Both ends of the small-diameter rod are bent in a crank shape, and the respective bent ends are placed on flange-like upper surfaces bent at the upper edges of the both side skeletons. A vehicle seat characterized by being welded to the vehicle. The vehicle seat according to claim 1,
The certain equipment is a wire arranged to extend in the front-rear direction of the seat between the side skeletons in order to support a cushion pad provided on the seat cushion from the lower side, and the rear part of the wire is the wire A vehicular seat characterized in that a rear extending portion that is fixed and coupled to an upper portion of a small-diameter rod and extends further rearward from the fixing portion with the small-diameter rod is bent upward. . The vehicle seat according to claim 2,
The wire is formed into a shape in which two line portions extending in the front-rear direction of the sheet are arranged in the width direction by being bent back into a U shape, and the portion of the wire that is bent back into the U shape is the rear side of the seat Furthermore, the U-shaped wire having a width wider than the U-shaped shape of the wire straddles the upper portion of the small-diameter rod and the two wire portions constituting the rearward extending portion of the wire. A vehicle seat characterized in that another formed wire is fixed and provided.

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