JPH0629103Y2 - Car seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a vehicle seat, and more particularly to a rotary seat that can rotate a seat body.

(Prior Art) When an occupant gets in and out of an automobile, a rotary seat in which a seat body is rotatable from a seating position to a boarding / alighting side of a vehicle has been widely used in order to facilitate the getting on / off operation of the occupant. This type of seat has a pedestal fixed on a rotating base and a turntable rotatably supported by the pedestal and having a seat body mounted inside.The turntable is a seating position of the seat body. It is possible to rotate the vehicle from the vehicle to the boarding / alighting side by a predetermined angle. The turntable is adapted to be locked by the locking mechanism at the seated position of the seat body. This lock mechanism is mounted on the lower surface of the turntable, and has a lock plate that engages and disengages in a notch groove formed in the pedestal portion by operating the lock lever.

(Problems to be solved by the invention) By the way, there are individual differences in the proper rotation angle of the seat main body when an occupant gets on and off the vehicle, and therefore, the turntable is not rotated over the entire operating range, and an arbitrary position on the way is not set. It is requested to stop at. As a locking means satisfying this demand, it is conceivable to newly provide a notch groove in the pedestal portion in addition to the notch groove and lock the lock plate in the notch groove.

However, with such locking means, it is necessary to operate the lock lever to disengage the lock plate from the notch groove, not only when the seat body is further rotated toward the vehicle inboard / outboard side but also when it is rotated to the seated position. However, such an operation is troublesome for the occupant, and getting on and off is poor.

An object of the present invention is to provide a vehicle seat in which the rotation operation of the turntable is stopped at an arbitrary position on the way only in the direction in which the seat body rotates from the seated position to the boarding / alighting side of the vehicle body.

[Constitution of device]

(Means for Solving the Problem) In order to achieve the above object, the present invention provides a pedestal portion fixed on a rotating base, a turntable rotatably supported by the pedestal portion, and a turntable having the seat body. A vehicle seat, which is axially supported by a table and includes a lock plate that is inserted into a notch groove formed in the pedestal portion to fix a turntable to the pedestal portion, the seat portion including: , Between the seating position and the boarding / alighting side of the vehicle, it gradually collapses in a taper shape from the seating position toward the boarding / alighting side of the vehicle to smoothly guide the lock plate, and the end of the lock plate receives the lock plate to secure the turntable. It is characterized in that an engaging portion for stopping rotation is provided.

(Operation) The following is a description of (operation) according to the above configuration.

(A) In order to rotate the turntable from the seated position to the boarding / alighting side of the vehicle, first, the lock plate is operated to disengage the lock plate from the notch groove.

(B) Next, rotate the turntable to the boarding / alighting side of the vehicle.
Then, the lock plate smoothly moves to the engaging portion and locks at the end portion and stops. That is, the rotation of the turntable can be stopped at an arbitrary position where there is an engaging portion between the seated position and the vehicle entry / exit side.

(C) To return the turntable to the seating position from the vehicle entry / exit side, rotate the turntable to the seating position side without operating the lock plate. Then, the lock plate smoothly moves in the tapered portion of the engaging portion,
The turntable reaches the seated position.

(D) At this time, the lock plate enters the notch, and the turntable is fixed to the pedestal.

(Embodiment) Hereinafter, the present invention will be described based on an embodiment shown in the drawings.

1 to 8 show an embodiment of the present invention, FIG. 1 is a plan view of an automobile seat, and FIG. 2 is II-II of FIG.
FIG. 3 is an enlarged vertical sectional view taken along the line III-III of FIG. 1, FIG. 4 is an enlarged longitudinal sectional view taken along the line IV-IV of FIG. 1, and FIG. 1 is an enlarged vertical sectional view taken along the line V-V of FIG. 1, FIG. 6 is an enlarged longitudinal sectional view taken along the line VI-VI of FIG. 1, and FIG. 7 is a lateral sectional developed view taken along the line VII-VII of FIG. It is a figure.

In the figure, 1 is an inclined rotary seat which is an example of an automobile seat, and includes a pedestal portion 3 fixed on a rotary base 2, and a turntable 6 rotatably supported by the pedestal portion 3 and having a seat body 5. It is pivotally supported by this turntable 6,
The lock plate 22 is configured to be inserted into the notch groove 3d formed in the pedestal portion 3 to fix the turntable 6 to the pedestal portion 3.

In particular, according to the present invention, in the pedestal portion 3, the lock plate 22 is gradually depressed between the seating position and the vehicle loading / unloading side so as to gradually taper toward the vehicle loading / unloading side.
Is provided, and an engaging portion 8 that stops the rotation of the turntable 6 by receiving the lock plate 22 at the step portion (end portion) 8a is provided.

The structure will be described in more detail below. On the floor surface 10 of the vehicle body, there is provided a rotating base which is guided by a slide rail 11 and is movable in the front-rear direction of the vehicle body, for example, a rotating base 2 divided into two. A rib portion 2a for reinforcement is formed on the rotary base 2. In addition, the rotary base 2 has an inclined surface 2b that descends toward the vehicle entry / exit side indicated by arrow A.
Is formed, and the pedestal portion 3 is fixed to the inclined surface 2b. The pedestal portion 3 has an annular portion 3a having a bottom surface,
A circular flange portion 3 arranged concentrically with the outer peripheral surface of the upper surface of the annular portion 3a and parallel to the inclined surface 2b of the rotary base 2.
It consists of b and.

The turntable 6 in which the seat body 5 is mounted is formed in a rectangular box shape, and an annular flange portion 6a is formed at a substantially central portion of the bottom portion of the turntable 6 so as to project outward orthogonally to the bottom portion. It is fitted and inserted into the inner peripheral surface of the annular portion 3a of the pedestal portion 3. Turntable 6 near the flange 6a
As shown in FIGS. 1 and 3, a plurality of support members 18 each having an L-shaped cross section, which are concentrically opened toward the flange 6a side, for example, three, are fixed to the lower surface of the support member 18. A pair of synthetic resin pads 1 interposed in the member 18
The flange 3b of the pedestal portion 3 is inserted between 9A and 19B. This allows the turntable 6 to slide smoothly along the flange portion 3b of the pedestal portion 3.

A lock mechanism 20 of the turntable 6 that locks the turntable 6 and the pedestal portion 3 to hold the seat body 5 at the seating position is mounted on the lower surface of the turntable 6, and includes a lock lever 21 and a lock plate 22. , And a lock spring 23. The lock lever 21 has a grip portion 21a.
And a shaft portion 21b. The shaft portion 21b is arranged parallel to the front-rear direction (front F-rear R direction) of the vehicle body, and the two bearing portions of the bearing member 25 fixed to the lower surface of the turntable 6 are provided. It is rotatably supported by 25a and 25b. The lock plate 22 is integrally fixed to the shaft portion 21b, and is arranged between the two bearing portions 25a and 25b with its axial movement restricted. Lock plate 22
The protruding piece 22a protruding toward the pedestal portion 3 side is inserted into the cutout groove 3d formed in the pedestal portion 3 and protrudes toward the opposite side.
2b is formed so as to come into contact with the flat surface portion 25d of the bearing member 25. The lock spring 23 is wound around the shaft portion 21b of the lock lever 21 protruding from the bearing portion 25a, and one end thereof is a notch groove 21d formed at the tip of the shaft portion 21b.
The other end is locked to the bearing member 25. The lock lever 23 is urged by the lock spring 23 to rotate in the direction of arrow B, and the projection 22a is always inserted and locked in the cutout groove 3d to hold the seat body 5 at the seated position.

A stopper pin 26 is planted on the lower left side of the front F side of the turntable 6, and the stopper pin 26 is such that the turntable 6 has a predetermined angle in the direction of arrow C, for example, about 70 °.
When it rotates, it comes into contact with a predetermined rib portion 2a of the rotary base 2,
The rotation of the turntable 6 is set to be restricted. Therefore, in the turntable 6, the seat body 5 in which the stopper pin 26 abuts the predetermined rib portion 2a from the seating position (rotation start end P ₁ ) of the seat body 5 in which the lock plate 22 is inserted into the cutout groove 3d of the pedestal portion 3. The entire operating range up to the vehicle entry / exit position (rotation end P ₂ ) is rotated.

A locking member 27 having a notch groove 27a is fixed to the right side of the lower surface of the turntable 6 on the front F side.
As shown in the figure, a rubber-like elastic body 28 is interposed between the locking member 27 and the lower surface of the turntable 6. The rotary base 2 has a rubber-like elastic body 28 which is inserted into the cutout groove 27a.
A positioning shaft 29 having a flange portion 29a held between the locking member 27 and the locking member 27 is planted.
By inserting the flange portion 29a of No. 9 into the notch groove 27a and sandwiching it by the locking member 27 and the rubber-like elastic body 28, it is possible to prevent the turntable 6 from peeling upward, and the turntable 6 operates. You can stop in posture.

A holding member 30 made of synthetic resin is fixed to the lower right side of the rear K side of the turntable 6, and by bringing the holding member 30 into contact with the rib portion 2a of the rotary base 2, when the seat body 5 is seated. The turntable 6 is supported so that the turntable 6 is not bent by a load.

The engaging portion 8 is press-formed on the lower surface of the pedestal portion 3,
As shown in FIG. ₁ , for example, about 4 on the rear R side with respect to a straight line connecting the rotation center O of the turntable 6 and the rotation start end P _1.
It is arranged on a straight line OP ₃ inclined by 5 °.

Further, the engagement portion 8 stops the rotation of the turntable 6 only in the direction in which the turntable 6 rotates from the start end P ₁ to the end P ₂ . That is, as shown in FIGS. 6 and 7, the engagement portion 8 gradually tapers from the seated position of the seat body 5 toward the vehicle body ingress / egress side in the direction in which the turntable 6 rotates (the direction of arrow C). In a concave shape, and the protruding portion 22 of the lock plate 22 is formed at the step portion (end portion) 8a.
The rotation of the turntable 6 is stopped by receiving a.

Next, the operation of the embodiment of the present invention will be described.

In FIG. 1, the occupant moves the turntable 6 in the entire operating range, that is, the starting point P, with the direction of arrow F being the front side of the vehicle body.
_When rotating from ₁ to the terminal end P ₂ and trying to get off to the vehicle entry / exit side indicated by the arrow A, first, the grasping portion 21 a of the lock lever 21 is gripped to lock the lock lever 21.
Rotate in the direction of arrow D against the spring force of
After removing from the notch groove 3d of the pedestal portion 3, the turntable 6 is rotated in the direction of arrow C. In this state, the turntable 6 is further rotated in the direction of arrow C by about 70 ° until the stopper pin 26 comes into contact with the rib portion 2a of the rotary base 2. Here, when the lock lever 21 is released, the protruding piece 22a comes into contact with the outer surface of the pedestal portion 3 by the restoring force of the lock spring 23. In this way, when the seat body 5 is directed toward the vehicle ingress / egress side indicated by the arrow A, the seat surface 5a of the seat body 5 is inclined downward in the direction of the arrow A, which facilitates getting off the vehicle. The same applies when getting on.

In order to return the seat body 5 to the seated position again from this state, the turntable 6 is rotated in the direction of arrow E to the rotation start end P ₁ . Then, the protrusion 22a of the lock plate 22
Is due to the restoring force of the lock spring 23.
It plunges into d and is locked. The seat body 5 is held in the seated position by the dust.

When the occupant tries to get down to the vehicle entry / exit side indicated by arrow A without stopping the turntable 6 in the middle position without rotating it over the entire operating range, the operator grasps the grip portion 21a of the lock lever 21 and locks it. Lever 21 lock spring 2
After the protrusion 22a of the lock plate 22 is disengaged from the cutout groove 3d of the pedestal 3, the turntable 6 is rotated in the direction of arrow C, against the spring force of No. 3 in the direction of arrow D. Here, when the lock lever 21 is released, the protruding piece 22a comes into contact with the outer surface of the pedestal portion 3 by the restoring force of the lock spring 23.

When the turntable 6 is further rotated in the direction of the arrow C in this state, the protruding piece 22a of the lock plate 22 gradually moves into the engaging portion 8 and the protruding piece 22a abuts the stepped portion 8a to turn the turntable. The rotation of 6 stops. In this way, the turntable 6 can be stopped at a position in the middle of the entire operation range according to the passenger's request. Further, in order to return the seat body 5 to the seating position again from this state, it is sufficient to rotate the turntable 6 in the direction of the arrow E to the rotation start end P _{1 as} described above, and the operation of the lock lever 21 is not necessary. Similarly, when the turntable 6 is returned from the maximum rotation position to the seating position, the rotation start point P in the direction of arrow E
It only needs to be rotated up to _1, and the operation of the lock lever 21 is unnecessary.

Although only one engaging portion 8 is provided in the above embodiment,
You may make it provide in multiple places. Further, the vehicle seat 1 is not limited to the tilt rotation type, but is a plane rotation type, that is, the height of the seat surface 5a of the seat body 5 is always the same when it is in the sitting position and when it is rotated to the vehicle loading / unloading position. Of course, it can also be applied to a plane rotation type sheet.

[Effect of device]

As described above, according to the present invention, the turntable can be stopped at any position between the seating position and the vehicle loading / unloading side, and when the seat body is returned to the sitting state from the vehicle loading / unloading side, Since you only have to rotate the turntable without operating the lock plate,
It is possible to significantly improve the occupant's entry / exitability.

[Brief description of drawings]

1 to 7 show an embodiment of the present invention, FIG. 1 is a plan view of an automobile seat, and FIG. 2 is II-II of FIG.
FIG. 3 is an enlarged vertical sectional view taken along the line III-III of FIG. 1, FIG. 4 is an enlarged longitudinal sectional view taken along the line IV-IV of FIG. 1, and FIG. 1 is an enlarged vertical sectional view taken along the line V-V of FIG. 1, FIG. 6 is an enlarged longitudinal sectional view taken along the line VI-VI of FIG. 1, and FIG. 7 is a lateral sectional developed view taken along the line VII-VII of FIG. It is a figure. 1 ... Automotive seat, 2 ... Rotating base, 3 ... Pedestal part, 5 ... Seat body, 6 ... Turntable, 8 ... Engaging part, 8a ... Step part (end part), 20 ... … Lock mechanism.

Claims (1)

[Scope of utility model registration request] 1. A pedestal portion fixed on a rotating base, a turntable having a seat body rotatably supported by the pedestal portion, and a notch formed in the pedestal portion pivotally supported by the turntable. A seat for an automobile, comprising a lock plate that is inserted into a groove and fixes a turntable to the pedestal portion, wherein the pedestal portion has a seating position between a seating position and a boarding / alighting side of the vehicle. An engaging portion is provided which gradually collapses in a taper shape toward the vehicle ingress / egress side to smoothly guide the lock plate, and which receives the lock plate at an end to stop rotation of the turntable. A car seat that does.