JPH064743Y2 - Seat structure with reclining device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] In this invention, the unit base of the reclining device is
The present invention relates to a seat structure with a reclining device fixed to a seat cushion frame by fastening together with a bracket of a slide rail.

[Conventional technology]

For example, as a seat for a vehicle or the like, a seat in which a seat occupant arbitrarily swings a seat back to adjust a tilt angle (reclining angle) and a reclining device is mounted is well known.

The reclining device is, for example, a unit base,
An arm plate swingably attached to the unit base is provided, and the unit base is fixed to the seat cushion side and the arm plate is fixed to the seat back side. And the reclining device is
Locking means is provided, and the rotation of the arm plate is restricted by the locking of the locking means. The locking means is configured to include, for example, a plurality of tooth portions formed on the arm plate and locking claws rotatably provided on the unit base.

Such a seat with a reclining device is, for example,
The seat is mounted on a pair of slide rails that move (slide) the seat in the front-rear direction. Then, the unit base is fixed to the seat cushion frame so that the bracket of the slide rail is sandwiched between the unit base of the reclining device and the seat cushion frame.

The unit base of the reclining device, for example, by the bolts arranged at a predetermined distance apart in the front and rear parts,
It is fixed to the seat cushion frame by tightening together with the slide rail bracket. That is, by sandwiching the bracket of the slide rail between the unit base and the seat cushion frame, the unit base of the seat cushion frame is fixed and the seat frame is fixed to the seat of the bracket of the slide rail at the same time.

According to this structure, the unit base, the bracket of the slide rail, and the seat cushion frame are fixed to each other by tightening the bolts together. for that reason,
The unit base of the reclining device and the seat cushion frame, or the seat cushion frame and the bracket of the slide rail can be fixed with great rigidity.

[Problems to be solved by the device]

As described above, according to the known structure, the unit base, the bracket of the slide rail, and the seat cushion frame are fixed to each other by the co-tightening with the bolts spaced apart from each other in the front and rear portions of the unit base of the reclining device. There is.

By the way, in the seat with a reclining device having the above structure, when the seat back acts as a rearward load due to an impact at the time of a sudden start or collision of the vehicle, the seat back, together with the arm plate of the reclining device, acts as a hinge. As a center, try to swing backwards. Normally, since the arm plate is locked by the lock means, a rearward load is applied from the arm plate to the unit base via the lock means.

However. The unit base is fixed to the seat cushion frame and the bracket of the slide rail with great rigidity, for example, by bolts arranged in the front and rear portions. Therefore, the load concentrates on the teeth of the locking means and the locking claws, and there is a risk that tooth missing of the teeth and tooth jumping of the locking claws may occur. If the teeth of the locking means are chipped, the teeth of the locking claws jump, and the like, the seat back cannot be stably maintained at an arbitrary reclining angle, so that the seated posture of the driver collapses and the driving of the driver is disturbed.

An object of the present invention is to provide a seat structure with a reclining device that suppresses the action of a load on the locking means of the reclining device.

[Means for Solving the Problems]

In order to achieve this object, according to the present invention, the bolt of either the front part or the rear part of the unit base is attached to the bracket at a position corresponding to the bolt so that it is free with respect to the bracket. It forms a notch. In either the front portion or the rear portion of the unit base, the bracket is fixed between the seat cushion frame and the seat back frame only by being sandwiched between the seat cushion frame and the seat back frame.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, in the seat structure 10 with a reclining device according to the present invention, the reclining device 12 is tightened together with the bracket via the bracket 16 on the upper surface of the slide rail 14 so that the seat cushion frame 18 It is fixed to the side of.

The reclining device 12 includes a unit base 20 and an arm plate 24 pivotally attached to the unit base by a pivot pin 22 and the like so as to be swingable.
The unit base 20 has, for example, insertion holes 26, 28, 30 in the front and rear portions, respectively, and as will be described later, via the bracket 16 by bolts 32, 34, 36 etc. inserted in the respective insertion holes. , Is fixed to the seat cushion frame 18. Further, the arm plate 24 has an insertion hole 38 at the upper end, and is fixed to the seat back frame 42 by, for example, a bolt 40 inserted in the insertion hole.

As can be seen from FIGS. 1 and 3, the arm plate
24 is biased forward, for example, under the biasing force of the return spring 44, and the swing of the arm plate causes the operating lever 46 to swing.
It is regulated by the locking means 48 having As the return spring 44 of the arm plate, for example, a pivot pin
It is possible to use a spiral spring wound around 22 and having one end locked in the groove 50 of the pivot pin and the other end locked in the locking pin 52 of the unit base.

Further, the lock means 48 is configured to include, for example, a plurality of tooth portions 54 formed on the arm plate 24 and a lock claw 56 formed at the end of the operation lever 46 so as to be able to mesh with the tooth portions. . The operation lever 46 is pivotally attached to the unit base 20 by, for example, a pivot pin 58, and the lock claw 56 is locked by a biasing force of a return spring 62 formed of a tension coil spring or the like installed between the operation lever and the locking pin 60. , Is always biased in the meshing direction with the tooth portion 54. In such a configuration, the lock claw 56 meshes with the tooth portion 54 under the biasing force of the return spring 62, the swing of the arm plate 24 is restricted, and the operation lever 46 moves the biasing force of the retarder spring 62. When it is pulled up against, the lock claw is disengaged from the tooth portion, and the lock of the lock means 48 is released.

As shown in FIGS. 1, 2, and 4, the slide rail 14 is, for example, an upper rail 64 on which the sheets 11 are stacked.
And a lower rail 70 slidably incorporated in the upper rail and fixed to a vehicle floor 68 via a leg bracket 66. The steel balls 76 are juxtaposed between the bent pieces 72 of the lower rails and the bent pieces 74 of the upper rails, and the rollers 78 are arranged between the upper rails 64 and the lower rails 70. In such a configuration, the steel balls 76 and the rollers 78 bear the load in the horizontal direction and the vertical direction between the upper rail 64 and the lower rail 70, respectively, so that the sliding of the upper rail with respect to the lower rail is ensured.

It should be noted that the reclining device 12 and the slide rail 14 each have a publicly known configuration, and since the configurations are not the gist of the present invention, they will not be described in detail.

Further, as shown in FIGS. 1 and 4, the bracket 16 is
It is fixed to the upper surface of the upper rail 64 of the slide rail. The bracket 16 has, for example, insertion holes 80, 82 corresponding to the insertion holes 28, 30 in the rear portion of the unit base, and the bolt 32 can be loosely inserted in a position corresponding to the insertion hole 26 in the front portion of the unit base. It is molded with a notch 84.

For example, the bolts 32, 34, 36 are inserted into the corresponding insertion holes 26, 28, 30 of the unit base 20, and the seat cushion frame 18 is inserted through the corresponding notches 84 of the bracket or the insertion holes 80, 82. Are inserted into the corresponding insertion holes 86, 88, 90, respectively. Then, inside the seat cushion frame, nuts 92, 94, 96 are screwed onto the bolts 32, 34, 36, respectively, and the base plate 20 is fixed to the seat cushion frame 18 via the bracket 16. That is, as shown in FIG. 4, the slide rail bracket 16 is sandwiched between the unit base 20 and the seat cushion frame 18, and the bolts 32, 34, and 36 are tightened together, so that the unit base is used as the action frame and the seat cushion. The frame is fixed to each bracket.

The bolt 34 is used, for example, for fixing a belt anchor (not shown) to which the end of the seat belt is locked, and the belt anchor is fixed by joint tightening between the bracket 16 and the seat cushion 18, for example. .

As described above, according to the present invention, for example, the notch 84 is formed in the bracket 16 at a position corresponding to the bolt 32 on the front portion of the unit base 20, and the bolt 32 becomes free with respect to the bracket. Is fixed as. That is, in the front part of the unit base 20, the unit base and the seat cushion frame are fixed to the bracket 16 only by being sandwiched between the unit base and the seat cushion frame 18.

In such a configuration, for example, an impact due to a collision or the like causes a large load to the rear, resulting in a seatback frame.
When acting on 42, the load is exerted on the unit base 20 via the arm plate 24 and the locking means 48. Then, the unit base 20 tends to rotate clockwise around the rear bolts 34 and 36. At this time, since the front portion of the unit base 20 is fixed to the bracket 16 only by being clamped, the unit base is not restricted by the bracket and is rotated clockwise while absorbing the load. It That is, the impact applied as a load to the rear of the seat back is not concentrated on the locking means 48 but is absorbed and escaped to other members. Therefore, the action of the load on the lock means 48 is suppressed, and it is possible to sufficiently prevent tooth breakage of the tooth portion 34 of the lock means, tooth jump of the lock claw 62, and the like.

Further, for example, in the front part of the unit base 20, the unit base and the seat cushion frame 18 sandwich the bracket 16 and are fixed together with the bracket of the slide rail by fastening the bolts 32 and the nuts 92 together. Then, in a normal state, under a load such that it is applied to the unit base 20 via the seat back frame 42, the unit base and the seat cushion frame 18 can be sufficiently held under the sandwiching force, The unit base does not rotate around the rear bolts 34 and 36. Therefore, the seat 11 can be maintained in a stable state without rattling.

In the embodiment, for example, the notch 84 having the adjacent ridges 98 and 100 on both sides is embodied, but the present invention is not limited to this, and for example, it is formed into a flat shape having no ridges on both sides. Good. However, as in the example,
If the notch 84 having the ridges 98 and 100 on both sides is used, the clamping force at the unit base 20 and the seat cushion frame 18 sufficiently acts on the ridges 98 and 100, so that the bracket 16 is sufficiently strong. Can be sandwiched.

Further, in the embodiment, the notch 84 is formed in the unit base 20.
At the position corresponding to the bolt 32 on the front of the
Is formed into 16. However, the present invention is not limited to this.
A notch may be formed in the bracket at a position corresponding to each bolt on the rear portion of the unit base so as to be free with respect to 6.

Here, since the notch 84 is sufficient if the bolt 32 is free with respect to the bracket 16, for example, a large diameter loose insertion hole or the like that allows the bolt to be free with respect to the bracket within a predetermined range. , Corresponds to the notch in this invention. That is, for example, a seat structure with a reclining device having a structure in which a bracket 16 has a loose insertion hole at a position corresponding to the bolt 32 at the front of the unit base is also included in the present invention.

In addition, in the embodiment, the unit base 20 includes the bracket 16 and the seat cushion frame by the bolts 32, 34, and 36 arranged on the front and rear portions of the unit base 20.
The structure fixed to 18 is illustrated. However, for example, the present invention may be applied to a structure in which the unit base 20 is fixed to a seat cushion frame or the like with bolts arranged in the vertical direction. In this case, the insertion hole of the bracket 16 corresponding to one of the upper and lower bolts of the unit base 20 is formed as a notch that allows the bolt to move in the rotation direction.

Note that reference numerals 102 and 104 in FIGS. 1 and 4 denote a pair of auxiliary members for the slide rail 14. The pair of auxiliary members 102, 104 are formed, for example, by having bent pieces 102a, 104a which can be loosely inserted and locked to each other at one end thereof, and the auxiliary member 102 is formed on the side surface of the bracket 16 of the upper rail. The members 104 are fixed and arranged on the lower surface of the lower rail 70, respectively. For example, the upper end of the auxiliary member 102 is formed in substantially the same shape as the bracket 16 as shown in FIG.

In such a configuration, for example, when a forward inertial force at the time of a collision acts on the belt anchor via the seat belt, the inertial force acts on the bolt 34, the bracket 16, etc. as a large upward pulling force. Action and try to index the bracket in the direction of separation from the upper rail 64. However, when the bracket 16 is about to be indexed upward, the auxiliary member 102 moves upward together with the bracket,
Since the bent pieces 102a and 104a of the auxiliary members 102 and 104 are locked to each other, peeling of the bracket from the upper rail 64 can be sufficiently prevented. However, the present invention is not limited to this, and another member may be used to prevent separation from the upper rail 64.

In addition, although the embodiment is embodied as a seat with a reclining device for an automobile or the like, the present invention is not limited to this, and the configuration can be applied to a seat for a train, an airplane, a ship, or the like.

The above-described embodiments are for explaining the present invention, and are not intended to limit the present invention in any way, and all modifications and alterations within the technical scope of the present invention are also included in the present invention. Needless to say.

[Effect of device]

As described above, according to the seat structure with a reclining device according to the present invention, a notch is formed in the bracket at a position corresponding to either the front portion of the unit base or the rear portion of the unit base. The bracket is sandwiched between the unit base and the seat cushion frame so that the bracket is free. That is, the unit base and the seat cushion frame are fixed to the bracket only by being sandwiched between the unit base and the seat cushion frame at the relevant portion of the front portion or the rear portion of the unit base. Therefore, even if a large rearward load acts on the seat cushion frame, the unit base rotates around the rear or front bolts to absorb and disperse the load. Therefore, the action of the load on the lock means is suppressed, and it is possible to sufficiently prevent tooth breakage of the tooth portion of the lock means, tooth jump of the lock claw, and the like.

If the notch is formed in a shape having ridges on both sides, the clamping force of the unit base and the seat cushion frame acts sufficiently on the ridges on both sides, so that sufficient strength is achieved. The bracket can be attached under the.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a seat structure with a reclining device according to the present invention, FIG. 2 is a schematic perspective view of a seat with a reclining device, and FIG. 3 is a partially enlarged view of a seat structure with a reclining device. The figure is a cross-sectional view along the line IV-IV in FIG. 10: Seat with reclining device, 12: Reclining device, 14: Slide rail, 16: Bracket, 18: Seat cushion frame, 20: Unit base, 24: Arm plate, 32, 34, 36: Bolt, 42: Seat back frame , 48: Locking means, 54: Teeth, 62: Lock claws, 64:
Upper rail, 70: Lower rail, 80, 82: Insertion hole, 8
4: Notch, 98,100: Yamabe.

Claims (3)

[Scope of utility model registration request] 1. A seat structure with a reclining device in which a unit base is fixed to a seat cushion frame by jointly tightening bolts on the front and rear parts of a unit base of a reclining device with a bracket of a slide rail. So that it is free from the bracket, a notch is formed in the bracket at a position corresponding to the bolt on the front of the unit base.In the front of the unit base, it is sandwiched between the seat cushion frame and seat back frame. Only by
A seat structure with a reclining device in which a bracket is fixed between a seat cushion frame and a seat back frame. 2. A seat structure with a reclining device in which the unit base is fixed to a seat cushion frame by jointly tightening the bolts on the front and rear parts of the unit base of the reclining device together with the bracket of the slide rail. , The bracket has a notch at the position corresponding to the bolt on the rear of the unit base so that it is free, and at the rear of the unit base, only by sandwiching between the seat cushion frame and seat back frame,
A seat structure with a reclining device in which a bracket is fixed between a seat cushion frame and a seat back frame. 3. The seat structure with a reclining device according to claim 1 or 2, wherein the notches are formed with adjacent ridges on both sides.