JP5186850B2 - 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 seat body is rotatably arranged on a vehicle floor.

2. Description of the Related Art Conventionally, in a vehicle seat, a technique is known in which the orientation of a seat body can be changed by rotating and moving horizontally with respect to a floor from a normal posture state facing the front of the vehicle. Here, Patent Document 1 below discloses a structure in which a locking device that locks the rotational movement of the seat body is disposed between the floor body and the floor. This locking device is normally held in a state where the rotational movement of the seat body is locked by the biasing force. The lock device is released from the locked state by manually releasing a release lever provided at the front portion of the seat cushion.
JP 2005-1499 A

  However, in the related art disclosed above, when rotating the seat body, the seat body has to be rotated while releasing the release lever with one hand, and the operability is poor.

  The present invention was devised to solve the above-described problems, and the problem to be solved by the present invention is to improve the operability when rotating the rotationally movable seat body. .

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 seat body is rotatably arranged on a vehicle floor. The seat body is rotationally locked by a rotation locking device disposed between the seat body and the floor. A release member for releasing the rotation-retained state by the rotation-retaining device is disposed on the floor.
According to the first aspect, since the release member is disposed on the floor, the operator can easily perform the release operation of the release member with his / her foot. Therefore, as compared with a configuration in which the operator operates the release member by hand, the operation can be performed without bending the body, so that the operation becomes simple. Then, when the release member is operated to release, the rotation-maintenance state of the seat body by the rotation-retention device is released. As a result, the operator can perform the rotational movement operation of the sheet main body with both open hands. In this way, it is possible to improve the operability when rotating the rotationally movable sheet body.

Next, in a second aspect based on the first aspect described above, the release member has a stepping operation type release operation structure.
According to the second aspect, since the release member has a stepping operation type operation structure, the release operation with the foot can be performed more easily.

Next, according to a third invention, in the first or second invention described above, the release member is disposed at a position on the rear side of the seat back when the seat body is in a posture facing the front of the vehicle.
According to the third aspect, when the seat body is in a posture facing the front of the vehicle, the operator can easily reach the seat back while operating the release member with his / her foot. Therefore, the operator can easily perform an operation of rotating the seat body by placing a hand on the seat back.

  Embodiments of the best mode for carrying out the present invention will be described below with reference to the drawings.

First, the configuration of the vehicle seat according to the first embodiment will be described with reference to FIGS.
Here, in FIG. 1, a schematic configuration of the vehicle seat is represented by a side view. The vehicle seat is disposed as a driver's seat of the vehicle, and has a configuration in which a seat body 1 serving as a seating portion is rotatably disposed on a floor F of the vehicle. As a result, the seat body 1 can be changed to the rear side by rotating and moving horizontally with respect to the floor F from the normal posture state facing the front of the vehicle.

The operation of rotating and moving the seat main body 1 with respect to the floor F is performed in accordance with the stepping operation of the foot-operating type foot pedal 20 disposed at the rear side position of the seat main body 1. Here, the foot pedal 20 corresponds to the release member of the present invention. The foot pedal 20 is disposed on the floor F, and can rotate and release the rotating device 10 that connects the seat body 1 to the floor F so as to be rotatable. Yes.
Here, the seat body 1 includes a seat back 2 that serves as a backrest, a seat cushion 3 that serves as a seating portion, and a headrest 4 that serves as a headrest. As shown in FIG. 2, the seat body 1 can be adjusted to move the seating position in the front-rear direction with respect to the floor F by the slider device 5 disposed at the lower portion of the seat cushion 3. Further, the seat body 1 can be changed in orientation with respect to the floor F as described above by the rotating device 10 provided so as to be interposed between the slider device 5 and the floor F.

  The above-described slider device 5 has a configuration in which a rail-shaped upper rail 5U is slidably fitted to a rail-shaped lower rail 5L extending in the front-rear direction of the seat body 1. Here, the lower rail 5L is integrally fixed to an upper surface portion of the seat side bracket 16 fixedly installed on a top plate (movable side member 12) of the rotating device 10 described later. The upper rail 5U is integrally fixed to a lower surface portion of a frame (not shown) constituting the skeleton of the seat cushion 3. The upper rail 5U and the lower rail 5L are provided as a pair on the left and right sides of the seat cushion 3.

The slider device 5 is normally in a state in which the sliding movement of the upper rail 5U with respect to the lower rail 5L is restricted by the operation of a locking device (not shown) disposed between the upper rail 5U and the lower rail 5L. Then, the slider device 5 releases the lock state of each lock device by performing a pulling up operation of the operation lever 5R arranged to extend forward from each lock device, so that the upper rail 5U slides. It is switched to a ready state. Thereby, the adjustment movement of the seating position of the seat body 1 can be performed.
The slider device 5 is returned to the state in which the sliding movement of the upper rail 5U is restricted again by the urging by stopping the lifting operation of the operation lever 5R.

  Next, the rotating device 10 includes an annular fixed side member 11 fixedly installed on the floor F, and an annular movable side member 12 fitted so as to be rotatable so as to surround the outer peripheral portion of the fixed side member 11. And having. As shown in FIG. 3, the former fixed-side member 11 represents a plurality of bolts 15 (····) with respect to the upper surface portion of the floor-side bracket 14 fixedly installed in the recess Fd of the floor F. ) Is fastened integrally. Specifically, the fixed side member 11 is fastened and fixed with a spacer 18 interposed between the fixed side member 11 and the fixed side member 11 is disposed at a position where the bottom side is raised so as not to interfere with the floor side bracket 14.

  The latter movable side member 12 has a structure that is divided into two parts in the vertical direction, and the upper surface portion of the ball bearing 13 that rolls on the outer peripheral surface portion of the fixed side member 11 is sandwiched therebetween. Are fixed integrally to the seat-side bracket 16 by fastening bolts 17. Thereby, the movable side member 12 is in a state in which it can smoothly rotate around the fixed side member 11 as the ball bearing 13 rolls. As shown in FIG. 2, the ball bearings 13 are equally disposed at four positions in the circumferential direction between the fixed member 11 and the movable member 12.

Accordingly, the seat body 1 can be rotated and moved horizontally with respect to the floor F in accordance with the movement of the movable member 12 rotating around the fixed member 11 as described above.
Here, the seat side bracket 16 fixedly installed on the upper surface portion of the movable side member 12 is formed with through holes 16F and 16R penetrating in the thickness direction at two positions on the front and rear sides thereof. . These through holes 16F and 16R are arranged and formed at axial target positions with the rotation center of the rotating device 10 described above as an axis.

  When the seat body 1 faces the front of the vehicle, the engagement / disengagement portion 31 formed at the tip of the engagement member 30 extending from the foot pedal 20 is inserted into the through hole 16R formed on the rear side. It is held as a state of being inserted by the urging force. As a result, the seat body 1 is held in a posture state facing the front of the vehicle as a state in which the rotational movement is restricted. Here, the engaging member 30 corresponds to the rotation locking device of the present invention.

The engaging member 30 that restricts the rotational movement of the seat body 1 is integrally coupled to the stepped portion 22 of the foot pedal 20.
Here, as shown in FIG. 3, the foot pedal 20 is configured such that the stepped portion 22 serving as a stepping operation portion is rotated by the hinge 23 with respect to the base 21 fixedly installed on the floor F. It is configured to be pivotally connected so as to be movable. The stepping portion 22 is normally held in a posture position floating from the base 21 by the urging force of the compression spring 24 engaged with the base 21.
An engaging member 30 having a shape that extends to the front side through the lower space of the floor F is integrally coupled and fixed to the above-described stepping portion 22. The engagement member 30 is formed as an engagement / disengagement portion 31 by folding the tip portion extending to the front side upward.

  The engaging / disengaging portion 31 is inserted into or removed from the through-hole 16R formed through the seat bracket 16 as the stepping portion 22 is stepped on or released. Operate. Specifically, in a state before the stepping portion 22 is stepped on, the engagement / disengagement portion 31 is moved into the through-hole 16R by the urging force of the compression spring 24 that holds the stepping portion 22 in the posture position floating from the base 21. It is inserted and held in that state. As a result, the seat body 1 is held in a state where the seat body 1 is rotationally locked by the engagement of the engaging / disengaging portion 31.

Then, as shown in FIG. 4, when the stepping portion 22 is stepped on by the operator, the engagement / disengagement portion 31 is pushed downward integrally with the stepping portion 22 to be removed from the through hole 16R. Removed. As a result, the rotation-retained state due to the engagement of the engagement / disengagement unit 31 is released, so that the seat body 1 can be rotated and moved while the rotation device 10 is operated.
Therefore, for example, the operator can rotate the seat body 1 by applying an operating force to the seat back 2 by placing both empty hands on the seat back 2. In this embodiment, the rotational operation direction when the seat body 1 is turned backward is set to a direction in which the seat body 1 is operated to face the vehicle inside.

When the seat body 1 is rotated and moved, the slide position may be adjusted in advance so that the slide position of the seat body 1 is not greatly separated from the rotation center of the rotating device 10. That is, by restraining the rotational radius of the seat body 1 to be small, the seat body 1 can be prevented from interfering with a part such as a side wall of the vehicle body during the rotational movement thereof.
The rotational movement operation of the seat main body 1 can be performed by easily reaching both open hands to the seat back 2 in a state where the operator depresses the foot pedal 20. That is, the foot pedal 20 is disposed at a position on the back side of the seat back 2 when the seat body 1 is in a posture facing the front of the vehicle. Therefore, the operator can perform the stepping operation of the foot pedal 20 at the position approaching the seat back 2 standing at the position immediately behind the seat back 2 and performing the rotational movement operation of the seat body 1.

During the rotational movement of the seat body 1, the engagement / disengagement portion 31 slides in a state of being pressed against the bottom surface portion of the seat side bracket 16 by urging even if the foot pedal 20 is depressed. The rotational movement of the sheet body 1 is allowed. Then, as shown in FIG. 5, the seat body 1 is directed to the rear side of the vehicle by rotational movement, so that the engaging / disengaging portion 31 is energized in the through hole 16 </ b> F formed on the front side of the seat side bracket 16. Plugged in. As a result, the seat body 1 is held in a state where the seat body 1 is rotationally fastened at a position directed toward the rear of the vehicle.
In addition, when returning the direction of the seat body 1 to the front of the vehicle, the foot pedal 20 may be stepped on in the same manner to rotate the seat body 1 in the direction opposite to the above-described direction.

Thus, according to the vehicle seat of the present embodiment, the foot pedal 20 is disposed on the floor F, so that the operator can easily release the foot pedal 20 with his / her foot. Therefore, as compared with a configuration in which the operator operates the foot pedal 20 by hand, the operation can be performed without bending the body, so that the operation becomes simple. Then, when the foot pedal 20 is released, the locked state of the seat body 1 by the engagement / disengagement unit 31 is released. As a result, the operator can perform the rotational movement operation of the sheet body 1 with both open hands. In this way, it is possible to improve the operability when the rotationally movable seat body 1 is rotationally moved.
Furthermore, since the foot pedal 20 has a stepping operation type operation structure, the release operation with the foot can be performed more easily.
Furthermore, when the seat body 1 is in a posture facing the front of the vehicle, the operator can easily reach the seat back 2 while operating the foot pedal 20 with his / her foot. Therefore, an operation in which the operator puts his hand on the seat back 2 and rotates the seat body 1 can be easily performed.

Although the embodiment of the present invention has been described with respect to one example, the present invention can be implemented in various forms in addition to the above-described example.
For example, as shown in FIG. 6, the operation structure of the release member of the present invention can be configured by a foot operation type foot button 40. The foot button 40 has a structure in which an engaging member 50 (rotating locking device) having an engagement / disengagement portion 51 at the tip is integrally coupled and fixed to a stepping portion 41 provided on the floor F so as to be stepped on. It has become. The stepping portion 41 is normally held in a state protruding from the floor F by the compression spring 42. Thereby, the engagement / disengagement part 51 is held in a state of being inserted into the through hole 16F formed in the seat side bracket 16. Then, when the stepping portion 41 is stepped on with a foot, the rotationally locked state of the seat body 1 by the engagement / disengagement portion 51 is released.

In addition, the release member does not necessarily have to have a stepping operation type release operation structure as shown in the above-described embodiments and modified embodiments. For example, an operation structure in which a lever is rotated left and right with a foot or raised up may be used.
Further, the release member only needs to be disposed at a low position where the operator can easily operate with his / her foot, and is not limited to the position on the back side of the seat back, and may be disposed on the side or on the front side.
Moreover, although the structure which performed rotation rotation by inserting a member (engagement / disengagement part) in the hole of a through-hole as a rotation locking device was shown, other rotation locking structures, such as a tooth | gear meshing structure, are shown. Can also be adopted.
In addition, the seat body is shown to be configured to be rotationally fastened at a posture position facing the front of the vehicle and a posture position facing the rear of the vehicle, but at other direction positions such as the side of the vehicle. You may be comprised so that rotation may be stopped. In addition, the rotational positions where the seat main body is rotated may be set at a plurality of positions in the rotational movement direction of the seat main body.

1 is a schematic configuration diagram of a vehicle seat according to Embodiment 1. FIG. It is a perspective view showing typically the rotation movement structure of a sheet body. It is the side view which expanded and represented the rotational movement structure of the sheet | seat main body. FIG. 4 is a side view showing a state where a foot pedal is stepped on from the state of FIG. 3. It is a side view showing the state where the seat body was rotated and moved toward the rear of the vehicle. It is a block diagram of the vehicle seat shown as a modified embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat body 2 Seat back 3 Seat cushion 4 Headrest 5 Slider device 5U Upper rail 5L Lower rail 5R Operation lever 10 Rotating device 11 Fixed side member 12 Movable side member 13 Ball bearing 14 Floor side bracket 15 Bolt 16 Seat side bracket 16F Through-hole 16R Through Hole 17 Bolt 18 Spacer 20 Foot pedal (Release member)
21 Base 22 Stepping part 23 Hinge 24 Compression spring 30 Engagement member (rotating locking device)
31 engagement / disengagement part 40 foot button (release member)
41 Stepping part 42 Compression spring 50 Engaging member (rotating locking device)
51 Engagement / disengagement part F floor Fd recess

Claims (2)

A seat for a vehicle in which a seat body is disposed on a floor of a vehicle so as to be rotatable,
The seat body is adapted to be rotationally secured by a rotational fastening device disposed between the floor,
A stepping type release member for releasing the rotation-retained state by the rotation-retaining device is disposed on the floor as having a rotation shaft at an end portion on the side far from the seat body ,
The release member is configured such that a stepping portion serving as an operation portion for a stepping operation is rotatably supported by a base fixed on the floor, and the rotation stopper is connected to the stepping portion. An engagement member that functions as a device is configured to be integrally coupled,
The engaging member extends from the coupling portion with the stepping portion along the floor to between the seat main body and the floor, and is folded back to the upper side formed at the extended end portion. When the engagement / disengagement portion of the shape engages with the member on the seat body side, the seat body is in a rotationally locked state, and the engagement / disengagement portion is pushed downward by a stepping operation of the stepping portion, whereby the seat vehicle seat, characterized that you have a structure to release the rotation preventing condition of the body. The vehicle seat according to claim 1,
The vehicle seat according to claim 1, wherein the release member is disposed at a position on a rear side of a seat back when the seat body faces the front of the vehicle.

Images