JP4482482B2 - Support structure for vehicle seat - Google Patents

Description

  The present invention relates to a support structure for a vehicle seat that can flip up a vehicle seat on a side wall of a vehicle body.

As a support structure of a vehicle seat, a vehicle seat that is rotatably attached to a side wall of a vehicle body and the vehicle seat is flipped up to the side wall has been practically used.
A practical vehicle seat support structure is practically sufficient if a seat side bracket is attached to the vehicle seat, the vehicle body side bracket is rotatably attached to the seat side bracket, and the vehicle body side bracket is attached to the side wall. Met.

As such a support shaft structure for a vehicle seat, a support shaft structure for allowing a seat cushion to be flipped up and stored on a side wall is known (for example, see Patent Document 1).
Japanese Patent No. 3526025 (page 7-9, FIG. 1-5)

  8A to 8C are views for explaining a conventional basic principle. In FIG. 8A, a vehicle seat 230 set in a seated state is shown. The vehicle seat 230 is seated back on a seat cushion 231. FIG. 232 is reclinably attached, a headrest 233 is slidably attached to the seat back 232, and a seat cushion 231 is attached to be able to be flipped up via a slide / bounce mechanism (slide lock mechanism) 234, and is attached to the lower surface of the seat cushion 231. A seat lock mechanism 235 is attached, and the seat lock mechanism 235 is engaged with a striker 237 shown in FIG.

  The slide / bounce mechanism 234 is a slide lock mechanism that slides the seat cushion 231 back and forth, and a flip-up mechanism that flips the seat cushion 231 laterally.

  When storing the vehicle seat 230, first, as shown in (b), the seat back 232 is tilted backward to be substantially horizontal, the seat lock mechanism 235 is released from the striker 237, and as shown in (c). The seat cushion 231 and the seat back 232 are flipped up to the side wall 239 in the passenger compartment 238.

  FIG. 9 is a front sectional view of a conventional vehicle seat slide / bounce mechanism. A slide / bounce mechanism (slide lock mechanism) 234 includes a seat side bracket 241 extending from a seat cushion 231 and the seat side bracket. A vehicle body side bracket 243 rotatably attached to the vehicle body 241 via a support shaft 242, a locking member 245 attached to the vehicle body side bracket 243 via a link mechanism (not shown), and a locking member 245. Is made up of a rail 246 that holds it in place and a rail attachment holder 247 attached to the rail 246. In the figure, 248 is a bolt for attaching the rail attachment holder 247 to the vehicle body 236 side, 251 is an attachment hole formed in the rail attachment holder 247, and 252 is a nut (bolt hole) welded to the vehicle body 236 side.

  The vehicle seat support shaft structure 240 includes a seat side bracket 241, a support shaft 242, and a vehicle body side bracket 243.

  In the vehicle seat support structure 240, before the vehicle seat 230 is fixed to the vehicle body 236 side, the seat cushion 231 side including the seat side bracket 241 and the rail 246 side including the vehicle body side bracket 243 are respectively supported. Since the vehicle can be rotated about the shaft 242, for example, when the seat cushion 231 side is placed at a predetermined position in the mounting operation of the vehicle seat 230, the rail 246 side swings relative to the seat cushion 231 side, The mounting hole 251 on the rail 246 side and the nut (bolt hole) 252 on the vehicle body 236 side do not match, and the mounting operation of the vehicle seat 230 may be difficult.

  That is, before the vehicle seat is attached, the seat cushion side and the rail side are prevented from shaking each other, and after the vehicle seat is attached (after the rail side is fixed to the vehicle body), the seat cushion side is smooth. A support structure for a vehicle seat that can be rotated is desired.

  The present invention solves the problem that the seat cushion side and the rail side rotate around the support shaft before fixing the vehicle seat on the vehicle body side, and the seat cushion side before the vehicle seat is mounted. It is another object of the present invention to provide a support structure for a vehicle seat that can prevent mutual vibration on the rail side and can smoothly rotate the seat cushion side after the vehicle seat is attached.

The invention according to claim 1, attached to sheet side bracket to the seat cushion, mounted rotatably in the bolt through the bush to the vehicle body side bracket on the seat side bracket, by mounting the vehicle body side bracket on the vehicle body, the side walls a protrusion at possible with the vehicle seat springing up the seat cushion, which protrudes bushings, and the flange portion is interposed between the bolt and the vehicle body side bracket, are formed in the flange portion in the axial direction of the bolt, A cylinder portion extending from the flange portion in the axial direction of the bolt, and a bolt inserted therein; and a rib extending in the axial direction of the bolt and projecting radially outward of the outer peripheral portion on the outer peripheral portion of the cylindrical portion; the bracket includes a through hole formed in substantially the same diameter and the outer peripheral portion of the bush, a fitting recess for fitting the ribs are formed in the through hole, a projection, The initial clamping of the belt, bolt and by crushing between the vehicle body side bracket, and to have a friction between the bolt and the vehicle body-side bracket it is tightened bolts, sheet side to secure the vehicle body-side bracket to the vehicle body when rotating the bracket is characterized that you reduce off Rikushon scraped naturally.

  For example, if the seat cushion side and the rail side can be prevented from shaking each other before mounting the vehicle seat, and the seat cushion side can be smoothly rotated after mounting the vehicle seat, This is preferable because the seat mounting operation can be carried out smoothly.

Therefore, bushings, and the flange portion is interposed between the bolt and the vehicle body-side bracket, a protrusion protruded in the axial direction of the flange portion formed by a bolt, the bolt extending from the flange portion in the axial direction of the bolt is inserted And a rib that extends in the axial direction of the bolt and protrudes radially outward of the outer peripheral portion, and has a substantially same diameter as the outer peripheral portion of the bush. A through-hole formed, and a fitting recess formed in the through-hole to fit the rib, and the protrusion is crushed between the bolt and the vehicle body side bracket at the initial stage of tightening the bolt. and it is tightened bolts made to have a friction between the vehicle body side bracket, when rotating the seat side bracket securing the body-side bracket to the vehicle body to reduce the off Rikushon scraped naturally . That is, it is possible to prevent the seat side bracket side and the vehicle body side bracket side from shaking each other before the vehicle seat is attached, and to smoothly rotate the seat side bracket side after the vehicle seat is attached.

In the invention according to claim 1, projections, initially tightening the bolt, by crushing between the bolt and the vehicle body side bracket, together with to have a friction can tightening of the bolt between the bolt and the vehicle body side bracket, securing the vehicle body-side bracket to the vehicle body when rotating the seat side bracket to reduce the off Rikushon scraped naturally. That is, before the vehicle seat is attached, it is possible to prevent mutual swinging of the seat side bracket side and the vehicle body side bracket side. As a result, there is an advantage that the mounting operation of the vehicle seat can be smoothly advanced. Moreover, the seat side bracket side can be smoothly rotated after attachment of the vehicle seat.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a perspective view of a vehicle that employs a support structure for a vehicle seat according to the present invention. The vehicle 10 includes a first row seat (vehicle seat) 11 and a second row seat ( The vehicle seat 12 and the third row seat (vehicle seat) 13 are arranged, and the vehicle 15 can realize a convenient vehicle compartment 15 space with various seat arrangements of these seats 11 to 13.

The first row seat 11 is a driver seat 16 and a passenger seat 17 configured to be slidable back and forth and foldable. The second row seat 12 is a bench seat that can slide back and forth, can be folded, and can be flipped up. The third row seats 13 are laterally flipped left and right seats 30L and 30R that can be flipped up to the side walls 18 and 18 (one 18 is not shown), and the left and right seats 30L and 30R are vehicle bodies. The sheet is symmetrical with respect to the center.
Hereinafter, the right seat 30 </ b> L will be described as the vehicle seat 30.

  FIG. 2 is a perspective view of a vehicle seat employing the vehicle seat support shaft structure according to the present invention. The vehicle seat 30 is provided on the upper surface of the wheel housing 19 via a slide / bounce mechanism 31 as a slide lock mechanism. A seat cushion 32 attached to the side wall 18 so as to be able to flip up, a seat back 33 attached to the seat cushion 32 so as to be reclining, and a headrest 34 attached to the seat back 33 so as to be movable up and down (slidable); An operation knob (slide knob) 35 for operating the slide / bounce mechanism 31, a seat lock mechanism 36 foldably attached to the lower surface of the seat cushion 32 in order to support the seat cushion 32 on the floor panel 22 side, and the seat In order to lock the locking mechanism 36 to the floor panel 22 side, the floor panel The striker 37 as the metal member provided on 22, made of.

  That is, the vehicle seat 30 is a seat in which a seat cushion 32 is attached to the vehicle body 14 (see FIG. 1) side so as to be slidable back and forth. The seat back 33 is folded on the seat cushion 32 side, and the striker 37 to the seat lock mechanism 36. The seat lock mechanism 36 is folded on the lower surface of the seat cushion 32, and the seat back 33 and the seat cushion 32 that have been folded on the seat cushion 32 can be integrally flipped up to the side wall 18 side.

  In the vehicle seat support shaft structure 70 according to the present invention, when the vehicle seat 30 is fixed to the vehicle body 14, the seat cushion 32 is placed at a predetermined position, and the slide / bounce mechanism 31 is positioned at the predetermined position. When trying to do so, the slide / bounce mechanism 31 fluctuates with respect to the seat cushion 32, and this is a structure for improving the difficulty of positioning.

  FIG. 3 is an exploded perspective view of the slide / bounce mechanism of the vehicle seat support structure according to the present invention. The slide / bounce mechanism (slide lock mechanism) 31 is integrated with the cushion frame 71 of the seat cushion 32. And a vehicle body side bracket 75 that is rotatably attached to the seat side bracket 72 via bushes 73 and 73 and bolts 74 and 74, and a first side of the vehicle body side bracket 75. A locking member 78 attached to be movable up and down via a plurality of link groups 77 (see FIG. 6) including links 76, a rail 79 for guiding the locking member 78 to be slidable and retaining it in a predetermined position, The first link for locking the fitting hole 78a (see FIG. 6) of the locking member 78 to one of the plurality of convex portions 79a (see FIG. 6) of the rail 79. 6, a biasing means 84 that rotates counterclockwise around the support shaft 83, and front and rear rail holders 85, 86 for attaching the rail 79 to the upper surface of the wheel housing 19 by being integrally attached to the rail 79. An operation knob (slide knob) 35 that releases the locking member 78 from the rail 79 by being attached to the first link 76, and a slide cover (cover) 87 that supports the operation knob 35 and covers the vehicle body side bracket 75 side. .

  The slide / bounce mechanism 31 is obtained by adding a flip-up mechanism that flips the seat cushion 32 in the lateral direction to a slide lock mechanism that slides the seat cushion 32 back and forth.

The vehicle body side bracket 75 includes a bracket main body 81 and front and rear brackets 82 a and 82 b attached to the front and rear of the bracket main body 81.
The biasing means 84 is specifically a tension spring, and biases in the direction of arrow A1, thereby rotating the first link as shown in A2, and biasing the operation knob in the direction of arrow A3 (downward). It is a means to do (withdraw).

The slide cover 87 is fitted with the cover body 88 that covers the vehicle body side bracket 75, the first link 76, the locking member 78, and the like, a notch 89 formed in the cover body 88, and the notch 89. A garnish (guide) 91 that guides the operation knob 35,
And a storage portion 92 for storing the seat-side bracket 72.

  The garnish 91 includes a recess 93 that supports the operation knob 35 in a self-supporting manner, and is fitted (temporarily assembled) to the operation knob 35 in advance before assembly.

The operation knob 35 includes a knob body 94 and an extending portion 95 formed to be able to bend and extend from the knob body 94 to the slide / bounce mechanism 31.
The knob body 94 includes an opening 96 for placing a hand. That is, by providing the opening 96, the operation knob 35 can be easily pulled.

  The extending portion 95 includes an inner member 97 formed of an elastic material, and an outer member 98 formed integrally with the knob main body 94 so as to cover the inner member 97, and is formed at the tip of the inner member 97. The slide / bounce mechanism 31 is provided with a locking hole 99a for locking the operation knob 35. Reference numeral 99b denotes a fastener for attaching the operation knob 35 to the first link 76.

FIG. 4 is an exploded perspective view of a support structure for a vehicle seat according to the present invention.
The bolt 74 is integrally formed with a washer portion 102 at the lower portion of the bolt head 101, and a step portion 103 for securing a predetermined gap is formed integrally at the lower portion of the washer portion 102, below the step portion 103. The threaded portion 104 is integrally formed.

  The bush 73 includes a flange portion 105 sandwiched between the bolt 74 and the seat side bracket 72, a plurality of protrusions 106 formed on the flange portion 105 (... indicates a plurality, the same applies hereinafter), a flange A cylindrical portion 109 that extends from the portion 105 to allow the bolt 74 to penetrate the inner peripheral portion 107 and the outer peripheral portion 108 to penetrate the seat side bracket 72, and a plurality of ribs formed in the longitudinal direction on the outer peripheral portion 108 of the cylindrical portion 109 111 and a tapered portion 112 formed at the tip of the outer peripheral portion 108 of the cylindrical portion 109.

The vehicle body side bracket 75 includes a through hole 113 formed to have substantially the same diameter as the outer peripheral portion 108 of the bush 73 in order to allow the bush 73 to pass therethrough. The through hole 113 is provided with fitting recesses 114 to be fitted to the ribs 111 of the bush 73 so as to prevent the bush 73 from rotating.
The seat side bracket 72 includes a hole 115 through which the threaded portion 104 of the bolt 74 passes, and a nut 116 welded around the hole 115.

  FIG. 5 is a side view of the vehicle seat support shaft structure according to the present invention. The vehicle seat support structure 70 has a seat side bracket 72 attached to the seat cushion 32 and the vehicle body side bracket 72 attached to the seat side bracket 72. The vehicle seat 30 is configured such that the seat cushion 32 can be flipped up to the side wall 18 (see FIG. 1) by attaching the vehicle body side bracket 75 to the vehicle body 14 side. In this case, the bush 73 is crushed between the seat side bracket 72 and the vehicle body side bracket 75 at the beginning of the tightening of the bolt 74, so that friction is provided between the seat side bracket 72 and the vehicle body side bracket 75, thereby the bolt 74. Can be tightened, and one of the brackets 72 and 75 can be fixed to the other of the brackets 72 and 75 When rotated it can be said that with the projections 106 ... (see FIG. 4) which can reduce the friction and abrasion naturally. In the figure, 85a and 86a are mounting holes formed in the front and rear rail holders 85 and 86, 118 and 118 are bolts for mounting the front and rear rail holders 85 and 86 to the vehicle body 14, and 119 and 119 are nuts welded to the vehicle body 14. It is.

FIG. 6 is a front view of the support structure for a vehicle seat according to the present invention. When the bolt 74 is initially tightened between the seat side bracket 72 and the vehicle body side bracket 75, the bush 73 is crushed. The bolt 74 can be tightened by giving friction between the seat side bracket 72 and the vehicle body side bracket 75, and when one of the brackets 72, 75 is fixed and the other of the brackets 72, 75 is rotated, it is naturally scraped. By providing the projections 106 that can reduce friction, it is possible to prevent the seat side bracket 72 side and the vehicle body side bracket 75 side from shaking each other before the vehicle seat 30 is attached. As a result, the mounting hole 85a of the front rail holder 85 can be easily aligned with the nut 119 on the vehicle body 14 side, so that the mounting operation of the vehicle seat 30 can be proceeded smoothly. Further, after the vehicle seat 30 is attached, the seat side bracket 72 side can be smoothly rotated. 78 a is a fitting hole of the locking member 78, and 79 a is a plurality of convex portions of the rail 79.
Next, the operation of the support structure 70 of the vehicle seat will be described.

FIGS. 7A to 7D are operation explanatory views of a support structure for a vehicle seat according to the present invention.
In (a), a bolt 74, a bush 73, a seat side bracket 72, and a vehicle body side bracket 75 are prepared.
In (b), the outer peripheral portion 108 of the bush 73 is fitted into the through hole 113 of the vehicle body side bracket 75, the bolt 74 is passed through the inner peripheral portion 107 of the bush 73, and the bolt 74 is moved to the nut 116 of the seat side bracket 72 with an arrow. Screw in as in c1.

  In (c), the bolt 74 is fastened to the nut 116 of the seat side bracket 72 as shown by the arrow c2, and the projections 106 of the bush 73 are crushed. In this state, since friction can be provided between the seat side bracket 72 and the vehicle body side bracket 75, mutual shake between the seat side bracket 72 side and the vehicle body side bracket 75 side can be prevented. That is, if the seat side bracket 72 side is fixed, the vehicle body side bracket 75 side does not fluctuate, so that the mounting operation of the vehicle seat 30 (see FIG. 2) can be smoothly advanced.

  In (d), by rotating the seat side bracket 72 side as indicated by an arrow c3, the protrusions 106... Shown in (c) of the bush 73 are extinguished (abraded). Thereby, the seat side bracket 72 side can be rotated smoothly and it can be made into an actual use state.

  In the vehicle seat support structure according to the present invention, as shown in FIG. 4, the vehicle body side bracket 75 is rotatably attached to the seat side bracket 72 via the bush 73 by the bolt 74. Instead of a bush, a washer having a protrusion may be used instead of the bush.

  In the support structure of the vehicle seat according to the present invention, as shown in FIG. 4, four bush-shaped projections 106 are formed on the bush 73. However, the present invention is not limited to this. The shape of the protrusion may be a protrusion having an arbitrary shape such as a cone, a pyramid, or a cylinder, or a radial rib. The number of protrusions is preferably 3 or 4, but the number is arbitrary 1 or more. .

  The support structure for a vehicle seat according to the present invention is suitable for use in a third row seat such as a one-on box or a minivan.

1 is a perspective view of a vehicle that employs a support structure for a vehicle seat according to the present invention. 1 is a perspective view of a vehicle seat that employs a support structure for a vehicle seat according to the present invention. It is a disassembled perspective view of the slide and the flip-up mechanism of the support structure of the vehicle seat which concerns on this invention. It is a disassembled perspective view of the support shaft structure of the vehicle seat which concerns on this invention. It is a side view of the support shaft structure of the vehicle seat which concerns on this invention. It is a front view of the support shaft structure of the vehicle seat which concerns on this invention. It is operation | movement explanatory drawing of the spindle structure of the vehicle seat which concerns on this invention. It is a figure explaining the conventional basic principle. It is a front sectional view of a conventional slide / bounce mechanism for a vehicle seat.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Vehicle, 14 ... Vehicle body, 18 ... Side wall, 30 ... Vehicle seat, 32 ... Seat cushion, 70 ... Support structure of vehicle seat, 72 ... Seat side bracket, 73 ... Bush, 74 ... Bolt, 75 ... Vehicle body Side bracket, 106 ... projection.

Claims (1)

Mounting the seat side bracket to the seat cushion, attached to the vehicle body side bracket on the seat side bracket rotatably a bolt through the bush, by mounting the vehicle body side bracket on the vehicle body, and allows springing up the seat cushion in the side wall In the vehicle seat
The bushings may include a flange portion which is interposed between the bolt and the vehicle body-side bracket, a protrusion protruded in the axial direction of the bolt is formed in the flange portion, in the axial direction of the bolt from the flange portion A cylindrical portion through which the bolt is inserted; and a rib that extends in the axial direction of the bolt and protrudes radially outward of the outer peripheral portion on the outer peripheral portion of the cylindrical portion;
The vehicle body side bracket includes a through hole formed to have substantially the same diameter as the outer peripheral portion of the bush, and a fitting recess formed in the through hole to fit the rib.
The protrusion, the clamping original of the bolt, by crushing between said vehicle body side bracket and the bolt, it is tightening the bolt to have a friction between the bolt and the vehicle body-side bracket, the support shaft structure of a vehicle seat, characterized that you reduce off Rikushon scraped naturally when the vehicle body-side bracket is fixed to the vehicle body by rotating the seat side bracket.

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