JP4599605B2 - Car seat mounting structure - Google Patents

Description

  The present invention relates to an automobile seat mounting structure in which an automobile seat is installed on a vehicle body floor in front and rear legs of a left and right pair.

  In general, a pair of left and right front legs that fasten and fasten a substantially vertical bracket part to the front member of the vehicle floor from the front side, and a bolt that is fastened to the rear member of the car body floor from the top side by attaching a substantially horizontal bracket part. Installation of an automobile seat on a vehicle body floor is performed by the left and right rear legs.

  Before and after mounting the automotive seat with the rear leg, a fitting boss portion having a cross-sectional shape concentric with the round hole for inserting the bolt is provided in the bracket portion of the rear leg, and a concave portion for fitting the boss portion is provided in the rear portion. Since it is provided on the upper surface of the member and the boss portion is fitted into the recess and positioned, it has been proposed to fix the rear leg to the rear member of the vehicle body floor by bolting (Patent Document 1).

Among the front and rear legs, the rear leg is mainly loaded by the occupant's load, and because it is fixed to the shaft with one tightening bolt, there is a concern about the restraining performance of the seat including the occupant during a collision. Is done.
JP 07-323765 A

  It is an object of the present invention to provide an automobile seat mounting structure that can reliably install an automobile seat on a vehicle body floor at the front and rear legs and can improve the restraint performance of the entire seat including a seated person at the time of a collision. To do.

In the present invention, a pair of left and right front legs for attaching a substantially vertical bracket part to a front member of a vehicle body floor from the front side and bolting and fixing with fastening bolts, and a substantially horizontal bracket part to a rear member of the vehicle body floor from above. In the mounting structure of the automobile seat in which the seat is installed on the vehicle body floor by the rear legs of the left and right pairs that are bolted and fixed with the tightening bolt,
The bracket portion of the rear leg includes a concave boss portion formed by indenting the plate surface of the bracket portion, an insertion hole for a tightening bolt formed in the bottom surface of the boss portion, and a rear end edge of the bracket portion. Providing a protruding piece that projects horizontally,
In the upper surface of the rear member, a middle step portion formed by indenting the plate surface of the upper surface, an upper step portion formed by indenting the plate surface of the upper surface relatively shallower than the rear edge of the middle step portion , the upper portion Provided with a recessed portion consisting of a lower step portion in which the plate surface of the surface is deeply recessed from the bottom surface of the middle step portion, and a receiving hole for a tightening bolt formed in the bottom surface of the lower step portion ,
The rear leg boss is housed in the lower step of the recess , the rear leg bracket is housed in the middle of the recess , the rear leg protrusion is housed in the upper step of the recess, and the rear The rear leg bracket is positioned and placed on the upper surface of the rear member by aligning the bolt insertion hole of the leg and the bolt receiving hole of the rear member, and the protrusion of the rear leg received in the upper step of the recess. With one piece
The bracket portion of the rear leg is bolted and fixed to the upper surface of the rear member with a bolt that extends over the bolt insertion hole of the rear leg and the bolt receiving hole of the rear member.

According to the present invention, the boss portion of the rear leg is accommodated in the lower step portion of the recess, the bracket portion of the rear leg is accommodated in the middle step portion of the recess, and the projecting piece of the rear leg is accommodated in the upper step portion of the recess. The leg bracket is positioned and placed on the upper surface of the rear member, and is twisted with the protrusion of the rear leg housed in the upper portion of the recess, and the bracket portion of the rear leg is secured to the upper surface of the rear member with a tightening bolt. By fixing with bolts, the vehicle seat can be reliably installed on the vehicle body floor with the front and rear legs, and the restraint performance of the entire seat including the seated person in the event of a collision can be reliably exhibited with the rear legs.

Hereinafter, referring to the attached drawings, FIG. 1 shows a slide type automobile seat comprising a seat back C including a seat cushion C and a headrest (not shown). In this automobile seat, the front and rear legs 1 and 2 of the left and right pair (only one side is shown) are riveted to the lower rail s ₂ that supports the upper rail s ₁ attached to the seat body side of the slide rail S. It has been stopped.

  As shown in FIG. 2, the front leg 1 is formed to have a substantially inverted L-shaped side surface from a substantially vertical bracket portion 1a for fixing a floor and a substantially horizontal bracket portion 1b for fixing a rail. Each bracket part 1a, 1b is reinforced by the side flange part 1c (refer FIG. 1) bent so that the side edge might be bordered.

Before leg 1, Ategai a substantially vertical bracket portion 1a on the front side of the front member m _1, the fastening bolt 3a that inserted rearwardly from the front to the back inside of the front member m _1, back inside the front member m ₁ Further, the shaft is fixed from the nut 3b screwed to the tightening bolt 3a. In FIG. 2, r ₁ and r ₂ denote rivets that fix the front leg 1 to the lower rail s ₂ by a substantially horizontal bracket portion 1b.

  As shown in FIG. 3, the rear leg 2 includes a substantially horizontal bracket portion 2a (hereinafter referred to as a “lower bracket portion”) positioned at the lower stage for floor fixing, and a substantially horizontal bracket portion 2b positioned at the upper stage for rail fixing. (Hereinafter, referred to as “upper bracket portion”), an oblique bracket portion 2c connecting the lower bracket portion 2a and the upper bracket portion 2b is formed to have a substantially Z-shaped side surface. Each bracket part 2a-2c is also reinforced by the side flange part 2d (refer FIG. 1) bent so that the side edge might be bordered except the protrusion piece mentioned later.

Rear legs 2, Ategai the lower bracket portion 2a on the upper side of the rear member m _2, and the bolt 4a tightening inserting to the back inside of the rear member m ₂ downward than the upper, the bolt 4a tightening from the back inside of the rear member m ₂ The shaft is fixed from the nut 4b to be screwed. In FIG. 3, r ₃ and r ₄ indicate rivets for fixing the rear leg 2 to the lower rail s ₂ by the upper bracket portion 2b.

  As shown in FIG. 4, the rear leg 2 is provided with a torsion-preventing projecting piece 20 that protrudes horizontally from the rear end edge of the lower bracket portion 2 a. At the same time, there is a long hole 21 for inserting a bolt that opens in the front-rear direction of the plate surface, and an oval shape that is substantially similar to the long hole 21 so that the long hole 21 is opened on the bottom surface of the lower bracket portion 2a. A concave boss portion 22 having a plate surface recessed is provided.

As shown in FIG. 5, the rear member m ₂ of the vehicle body floor F is provided with a recess 5 in the upper surface of the rear member m ₂ that can accommodate the lower bracket portion 2 a including the protruding piece 20 of the rear leg 2. The concave portion 5 is formed to be indented so as to exhibit a slightly larger planar shape than the outer shape of the lower bracket portion 2a including the projecting piece 20 so that the rear leg 2 can be easily assembled and mounted.

As shown in FIG. 3, the recess 5 of the rear member m ₂ includes a middle step portion 5a that houses the lower bracket portion 2a including the side flange portion 2d of the rear leg 2, and an upper surface of the rear member m _{2 at} the rear of the middle step portion 5a. An upper step portion 5b for receiving the protruding piece 20 of the rear leg 2 by being recessed relatively shallow from the edge, and a lower step portion 5c for receiving the boss portion 22 of the rear leg 2 by being inserted deeper than the bottom surface of the middle step portion 5a. And is formed from. In the drawing, reference numeral 5d denotes a bearing hole of the fastening bolt 4a provided on the bottom surface of the lower step portion 5c.

In order to install the vehicle seat on the vehicle body floor F from the above-described configuration, the front leg 1 is applied to the front side of the front member m ₁ with the substantially vertical bracket portion 1a, and the rear leg 2 is mounted to the rear portion with the lower bracket portion 2a. and held against the upper side of the member m ₂ to fitting placed on the lower bracket portion 2a in the recess 5. At that time, since the boss portion 22 is aligned with the lower step portion 5c of the concave portion 5, the lower bracket portion 2a is aligned with the middle step portion 5a of the concave portion 5, and the projecting piece 20 is aligned with the upper step portion 5b of the concave portion 5, it location mounting positioned on the top surface of the member m _2.

First, inserted from tightening the bearing hole and the bearing hole formed in the front surface of the front member m ₁ bolts 3a was substantially provided on the plate surface of the vertical bracket portion 1a (not shown) to the back inside of the front member m _1, from screwing the fastening bolts 3a from the back inside of the front member m ₁ a nut 3b, axially fastened to the front member m ₁ substantially vertical bracket portion 1a of the front leg 1.

Next, tightening bolts 4a inserted through from up to the back inside of the rear member m ₂ bearing holes 5d formed in the elongate hole 21 and the lower portion 5c of the rear member m ₂ provided on the plate surface of the lower bracket portion 2a, a nut 4b from screwing the bolt 4a tightening from the back inside of the rear member m _2, a lower bracket portion 2a of the rear leg 2 in the rear member m ₂ axes fastened.

Upon subsequent axial stop fixed legs 2, before, even if with roses hole distance for the relative distance or bolt of the rear legs 1 and 2, elongated hole a hole matching the bearing hole 5d of the rear member m ₂ 21 because it performed in, reliably axial stop fixed to the rear member m ₂ by clamping bolts 4a and the lower bracket portion 2a of the rear leg 2 from the elongated hole 21 of the lower bracket portion 2a is inserted into the bearing hole 5d of the rear member m _2.

  In the vehicle seat mounting structure constructed as described above, even if the rear leg 2 is fixed with a single fastening bolt 4a as shown in FIG. 6, the projecting piece 20 is locked at the recess edge of the upper step 5b. Therefore, not only does the rear leg 2 not twist and move even when the rear leg 2 is accompanied by vibration during traveling, etc., but the restraint performance of the seat including the seated person at the time of collision can be reliably exhibited in the rear leg.

While stopped twisting by projecting piece 20 described above is sufficient be provided to the rear leg 2, substantially vertical bracket portion 1a of the leg 1 before optionally the configuration units described above, also provided on the front surface of the front member m ₁ Applicable to as well.

It is a side view which shows the attachment structure of the motor vehicle seat which concerns on this invention. It is sectional drawing which shows the attachment structure of the front leg in FIG. It is sectional drawing which shows the attachment structure of the back leg in FIG. It is a top view which shows the external shape of the back leg in FIG. It is a top view which shows the recessed part shape of the rear member in FIG. It is a top view which shows the attachment structure of the back leg in FIG.

F Body floor m ₁ Front member m ₂ Rear member 1 Front leg 1a Front leg bracket 2 Rear leg 2a Rear leg bracket 20 Rear leg protrusion 21 Tightening bolt insertion hole 3a Front leg tightening bolt 4a Rear Leg tightening bolt 5 Recessed part of rear member 5a Middle part of recessed part 5b Upper part of recessed part 5c Lower stage part of recessed part 5d Receiving hole for fastening bolt

Claims (1)

A pair of left and right front legs that attach a substantially vertical bracket to the front member of the vehicle floor from the front and tighten it with bolts, and a substantially horizontal bracket from the top to the rear member of the vehicle floor. In the vehicle seat mounting structure in which the seat is installed on the vehicle body floor by the left and right rear legs that are bolted and fixed,
The bracket portion of the rear leg includes a concave boss portion formed by indenting the plate surface of the bracket portion, an insertion hole for a tightening bolt formed in the bottom surface of the boss portion, and a rear end edge of the bracket portion. Providing a protruding piece that projects horizontally,
In the upper surface of the rear member, a middle step portion formed by indenting the plate surface of the upper surface, an upper step portion formed by indenting the plate surface of the upper surface relatively shallower than the rear edge of the middle step portion , the upper portion Provided with a recessed portion consisting of a lower step portion in which the plate surface of the surface is deeply recessed from the bottom surface of the middle step portion, and a receiving hole for a tightening bolt formed in the bottom surface of the lower step portion ,
The rear leg boss is housed in the lower step of the recess , the rear leg bracket is housed in the middle of the recess , the rear leg protrusion is housed in the upper step of the recess, and the rear The rear leg bracket is positioned and placed on the upper surface of the rear member by aligning the bolt insertion hole of the leg and the bolt receiving hole of the rear member, and the protrusion of the rear leg received in the upper step of the recess. With one piece
A structure for mounting an automobile seat, wherein the bracket portion of the rear leg is bolted and fixed to the upper surface of the rear member with a bolt extending from a bolt insertion hole of the rear leg and a bolt receiving hole of the rear member.

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