JP2002347481A - Seat device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat device provided with a rotation mechanism and a move mechanism supporting a seat main body in which a lock mechanism operable to prohibit move of a seat main body by securing sufficient strength when excessive load is applied to the seat main body in emergency or the like of a vehicle can be composed without requiring a member protruded from the floor side to be an obstacle to move of an occupant. SOLUTION: The lock mechanism is disposed between the rotation mechanism and the move mechanism to form interlock with an actuation member installed on the rotation mechanism through a connection member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving mechanism which operates to rotate and move the position of a seat body to assist in getting on and off, so that an occupant such as an elderly person or a physically handicapped person can easily get on and off the vehicle. In particular, the present invention relates to a locking mechanism for securely locking the seat device in a seating position when the vehicle travels and ensuring safety even in an emergency.

[0002]

2. Description of the Related Art As a seat apparatus of this type, there is a conventional one disclosed in, for example, Japanese Patent Application Laid-Open No. 11-268564. In this seat device, a turntable is mounted on the floor of the vehicle to facilitate getting on and off the seat body,
The base unit is mounted on the turntable, and the four-link mechanism attached to the base unit allows the seat body to be moved out of the room or housed. In the seat device configured as described above, the anchor hook is fixedly mounted so as to stand on the floor side, and the holder is rotatably mounted on the base. When the position of the seat body to be used by the occupant while the vehicle is running, that is, when the seat body is adjusted to the position facing the front of the vehicle, the base rotates and the base and the anchor hook are engaged. Stopping and stopping the rotation, and further, the anchor hook comes into contact with the holder to rotate the holder. When the holder rotates, the holder engages with a lock plate fixed to the seat support member of the four-link mechanism that supports the seat body. In this way, the lock mechanism that prevents the seat body from moving with respect to the floor of the vehicle is constituted by the holder and the lock plate, and the seating position during traveling can be firmly secured.

[0003]

However, in the above-described conventional rotating mechanism of the getting-on / off assist device, since the anchor hook is fixedly mounted so as to stand on the floor side, the seat body rotates. The anchor hook is left standing on the floor in the state of being sent out.
For this reason, there is a fear that the caregiver may trip over the operation, and the floor space at the foot of the rear seat may be reduced. Therefore, an object of the present invention is to realize a seat device having a lock mechanism that can prevent the movement of the seat body with respect to the floor without requiring a member standing up from the floor side.

[0004]

Means for Solving the Problems To solve the above-mentioned problems, technical measures taken in the present invention include a seat body, a rotation mechanism attached to the base, and a rotation mechanism with respect to the base by the rotation mechanism. A moving mechanism supported movably and supporting the sheet body movably with respect to the rotating mechanism; a locking member disposed on one of the moving mechanism and the rotating mechanism; A seat device comprising a locked member disposed on one of the other mechanisms, wherein the seat body is immovable with respect to the rotation mechanism when the locking member is locked to the locked member.
An operating member attached to the rotating mechanism and operating in a predetermined rotation angle range of the rotating mechanism; and the operating member interlocked with the locking member such that the locking member is disengaged from the locked member. And a connecting member to be connected. In the seat device having the above configuration, the operating member is attached to the rotating part of the rotating mechanism, and does not stand up from the floor side. As a result, it is possible to realize a seat device that does not hinder the movement of the occupant in the passenger compartment and secures a floor space at the foot of the rear seat.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction and operation of the present invention will be described below with reference to the drawings. First, a schematic function of a seat device 1 (hereinafter, referred to as a seat device 1) including a rotation mechanism according to the present invention will be described with reference to FIGS. FIG. 1 shows a case where the seat device 1 is set to a passenger seat on the left side of a driver's seat. For example, when the occupant is sent out of the passenger compartment and lowered, the occupant is mounted on the seat device 1 from a frontward position (state A shown in FIG. 1) where the occupant sits and uses the seat body 2 (FIG. 2) while traveling. By operating the rotating mechanism 10, the occupant is rotated so as to face the side of the vehicle (state B shown in FIG. 1). Thereafter, the slide mechanism 30 (FIG. 2) and the moving mechanism 5
0 (FIG. 2) operates in conjunction with it and lowers the seat body 2 while sending it out of the vehicle compartment (state C shown in FIG. 1). Then, it is easy for the occupant to transfer from the seat cushion 2a, which is the seating portion of the seat body 2, to a wheelchair or the like.

Next, an outline of the configuration of the seat apparatus 1 will be described with reference to FIG. FIG. 3 shows a state where the seat body 2 is in the state B in FIG. The seat device 1 includes a seat body 2, a rotation mechanism 10 (FIGS. 4 and 5) for rotating the sheet body 2 about a vertical axis in the up-down direction, and a seat body 2.
And a moving mechanism 50 configured to operate in cooperation with the same driving device 60 as the sliding mechanism 30. Moving mechanism 50 and slide mechanism 30 for supporting seat body 2
Is mounted so as to be supported on a base plate 33, and the base plate 33 is rotatably supported on a rotating base 11 by a rotating mechanism 10 (FIGS. 4 and 5). Further, the rotating base 11 is connected to the floor 1 via the legs 70.
00 (FIG. 1).

[0007] As shown in FIGS. 3, 4 and 5, the rotation mechanism 10 is configured to be operated by a rotation drive mechanism 180 mounted on the upper surface of the base plate 33.

The seat body 2 includes a seat cushion 2a,
It has a seat back 2b and is used for a normal vehicle assembled via an angle adjusting device (not shown) of the seat back 2b.

The structure of the rotating mechanism 10 will be described in detail with reference to FIGS. FIG. 4 shows the state of the rotation mechanism 10 when the seat body 2 is in the state A shown in FIG. 1, and FIG.

The base plate 33 and the rotating base 11 have:
A circular rotation guide mechanism 110 is provided. Rotation guide mechanism 11 including shoes, balls and the like (not shown)
0 allows the base plate 33 to be rotatable on the rotating base 11 in a horizontal plane, and the rotating base 11 and the base plate 33 are vertically locked to each other. A bracket 185 is fixed inside the circular shape of the rotation guide mechanism 110 and on the upper surface of the base plate 33, and the rotation shaft 18 provided at the tip of the bracket 185 is provided.
4, the support bracket 183 is rotatably mounted in a horizontal plane. Then, the support bracket 183
Is mounted with a rotation drive mechanism 180 having a motor 181. The rotation drive mechanism 180 includes a screw 182
The screw 182 meshes with a nut (not shown) provided inside the rotation driving mechanism 180, and
The screw 182 is configured to move by the operation of “0”.

Further, a lever 150 is provided on the base plate 33 inside the circular shape of the rotation guide mechanism 110.
Is rotatably mounted in a horizontal plane by a pin 152 at a substantially central portion thereof. One end of the lever 150 is pivotally connected to an end of the screw 182 by a pin 154, and the other end is pivotally connected to a connecting link 140 by a pin 142.

The other end of the link 140 is connected to a pin 146.
Thereby, it is rotatably attached to a bracket 71 fixedly attached to the leg 70.

As shown in FIG. 4, when the seat body 2 is in the state A in FIG. 1, the projections 34 provided on the base plate 33 and the flanges 7 formed on the bracket 71 are provided.
3 are in contact with each other, and the base plate 33 is
In contrast, further rotation in the clockwise direction is restricted. In FIG. 4, the screw 182 pushes the coupling end with the lever 150 to the most pressed position.
That is, the lever 150 is at a position where the lever 150 is most rotated counterclockwise.

In FIG. 5, the rotation drive mechanism 180 attached to the base plate 33 operates from the state of FIG.
The screw 182 is moved to the rotation drive mechanism 180 side by the lever 150.
Shows the case where the icon is most drawn. At this time, the base plate 33 and the rotating base 11 rotate with respect to each other, and the seat body 2 is in the state B in FIG.

Next, the structure and operation of the moving mechanism 50 and the slide device 30 will be described in detail with reference to FIG.

The moving mechanism 50 has a pair of four-joint link mechanisms 5 attached to the left and right sides of the seat body 2. The four-link mechanism 5 has a base bracket 53, a front link 51 extending from the base bracket 53 above the seat body 2, and a front link 51 and a rear link 52, which are rotatably mounted in the front-back direction. Link 5
A swing arm 57 is rotatably connected to both upper ends of the two. Each of the left and right swing arms 57 has a portion extending downward, and the lower ends thereof are connected to each other by a torque rod 55.
Are linked by A pair of support arms 56 extending forward are welded to the torque rod 55, and the seat body 2 is attached to both support arms 56.

A pair of slide mechanisms 30 are mounted on the left and right sides of the seat device 1. The slide mechanism 30 includes a lower rail 32 fixed on a base plate 33 and an upper slider 31 guided in the front-rear direction by the lower rail 32. The upper slider 31 and the base bracket 53 are fixed by a caulking pin 44 or the like and are integrated. As described above, the moving mechanism 50 is configured to be movable in the front-rear direction with respect to the base plate 33 by the slide mechanism 30.

As shown in FIGS. 6 and 7, a drive device 60 having a motor is attached to a connecting rod 54 welded to connect the left and right base brackets 53 via a motor bracket 61. ing.
The driving device 60 includes a screw 63 extending forward of the seat body 2, and the screw 63 is engaged with a nut 64 (FIG. 3) fixed to the base plate 33 (FIG. 3).
When the driving device 60 is operated and the driving screw 63 rotates, the moving mechanism 50 can be moved in the front-rear direction of the seat body 2 with respect to the base plate 33.

Further, as shown in FIG. 3, flange portions 33a are formed on both sides of the base plate 33, and a connecting link 59 is rotatably attached to the flange portions 33a. The downwardly extending ends of the rear link 52 are rotatably connected to each other.

As described above, when the upper slider 31 moves from the position shown in FIG. 3 to the front of the seat body 2 by operating the driving device 60, the front and rear links 51 and 52 are moved relative to the base bracket 53. The support arm 56 and the seat body 2 attached to the support arm 56 can be pushed to the side by rotating the seat body 2 forward.

As shown in FIGS. 6, 7, and 8, the seat device 1 further includes a lock mechanism 40 for securely locking the seat device to the seating position when the vehicle is running.
The lock mechanism 40 has, as its main components, a pair of lock hooks 42 arranged on both left and right sides of the seat device 1, and lock pins 41 which can be engaged with each lock hook 42. The lock hooks 42 are integrally formed by welding to both ends of a long pipe-shaped lock shaft 48. On the vertical surfaces of the left and right upper sliders 31, shaft pins 43 are horizontally fixed and mounted inwardly of the seat apparatus 1, and the shaft pins 43 are inserted into hollow portions at both ends of the lock shaft 48 and mounted. The lock hook 42 is rotatably supported with respect to the upper slider 31.
On the other hand, the lock pin 41 is fixed to the swing arm 57 and the support arm 56 by welding at both ends thereof in parallel with the torque rod 55. Therefore, by locking the lock hook 42 and the lock pin 41, the four-link mechanism 5 can be fixed to the upper slider 31. As described above, by directly locking the lock pin 41 fixed to the support arm 56 to which the seat body 2 is attached, regardless of the rigidity and strength of the four-joint link mechanism 5, Even when an excessive load is applied, the movement of the seat body 2 can be reliably prevented.

Further, the rear link 5 of the four-bar linkage 5
2 is connected to the base plate 33 via the connection link 59, so that the four-link mechanism 5 and the upper slider 31 are fixed, and the locking strength of the nut 64 and the screw 63 with respect to the movement of the seat body 2 is reinforced. It is configured to act as follows.

The lock mechanism 40 includes a spring 81 for exerting an operating force to lock the lock hook 42 to the lock pin 41, and a cable 82 for pulling the lock hook 42 in the release direction against the operating force of the spring 81. It has. One end of the spring 81 is locked by a notch 42 a provided in the lock hook 42, and the other end is connected to a connecting rod 54.
It is attached in contact with. The cable 82 is
2a and a wire 83 slidable in a jacket 82a, one end 83a of the wire 83 is connected to an arm bracket 45 fixed to a lock shaft 48, and an end of the jacket 82c is fixed to a connecting rod. Locked at 46.

On the other hand, the other end of the cable 82 extends so as to be connected to the rotating mechanism 10 as shown in FIGS. The other end 83b of the wire 83 is a hole 8 provided at the tip of one side of the L-shaped crank lever 85.
5a, the other end of the jacket 82a is locked by an arm bracket 84 fixed to the base plate 33. The crank lever 85 is rotatably attached to the base plate 33 by a pin 152 serving as a pivot of the lever 150 at a connection portion between two sides of the L-shape. Further, a bent portion 8 is provided at the tip of the other side of the L-shape.
5b (FIG. 5) is formed, and when the lever 150 and the crank lever 85 have a predetermined rotation angle, the bent portion 85b abuts on the end surface of the lever 150. When the rotation angle is equal to or more than the predetermined rotation angle, the lever 150 and the crank lever 85 are integrated. It is designed to rotate. As shown in FIG.
Is rotated to the state B in FIG. 1, the crank lever 85 is rotated clockwise by the lever 150, and the wire 83 is pulled against the action force of the spring 81, and the lock hook 42 and the lock pin 41 The lock can be released.

Next, the operation of the seat apparatus 1 configured as described above will be described.

The seat device 1 is set so that it can be operated by stopping the vehicle and opening doors 91 and 92 (FIG. 1) on the side surfaces of the seat body. First, when an occupant operates an operation button (not shown) for the seat device 1 in the same seating use state A (FIG. 1) as during traveling of the vehicle, the rotation mechanism 10 is operated, and the occupant is shown in FIG. 1. The vehicle rotates approximately 90 degrees toward the outside of the cabin, and becomes the state B. With the above-described configuration, the lock mechanism 40 is released in conjunction with the rotation operation of the seat device 1. Simultaneously with the completion of the rotation operation, the operation of the driving device 60 of the slide mechanism 30 is automatically started based on a control program incorporated in a control device (not shown) of the getting-on / off assist device 1. And the slide mechanism 3
0, the upper slider 31 is pushed out of the vehicle compartment, and the moving mechanism 50 is operated in conjunction with the slide mechanism 30.
As a result, the seat body 2 is sent out to a position outside the cabin, and is in the state C (FIG. 1). When the occupant is accommodated in the vehicle cabin, the operation is performed in the reverse of the above-described manner, and when returning to the state A which is a position used when the vehicle travels, the lock mechanism 40 fixes the movement of the seat device 1. To ensure the safety of the occupants.

[0027]

The seat apparatus constructed and operated as described above has the following effects. That is, the crank lever for operating the lock mechanism is attached to the rotating part of the rotating mechanism and does not stand up from the floor side. As a result, the occupant does not obstruct the movement in the passenger compartment, and the floor space at the foot of the rear seat is secured.

[Brief description of the drawings]

FIG. 1 is a plan view of a vehicle provided with a seat device according to the present invention.

FIG. 2 is a perspective view showing a state in which a seat body is sent out of a vehicle cabin by the seat device according to the present invention.

FIG. 3 is a perspective view showing a seat device according to the present invention.

FIG. 4 is a plan view of a rotation mechanism of the seat device according to the present invention.

FIG. 5 is a plan view of a rotation mechanism of the seat device according to the present invention.

FIG. 6 is a sectional view taken along line VI-VI in FIG. 3, showing a state where the lock mechanism is in a locked state.

FIG. 7 is a sectional view taken along the line VI-VI in FIG. 3, showing a state where the lock mechanism is in a released state;

FIG. 8 is a view taken in the direction of the arrow VIII in FIG. 6;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 seat device 2 seat body 10 rotating mechanism 41 locked member (lock pin) 42 locking member (lock hook) 50 lifting device (moving mechanism) 82 connecting member (cable) 85 operating member (crank lever) 100 base (floor) 150 intermediate member (lever) 180 drive means (rotation drive mechanism)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B60N 2/24 B60N 2/24

Claims (2)

[Claims] A seat body, a rotating mechanism attached to the base, a moving mechanism rotatably supported by the rotating mechanism with respect to the base, and supporting the seat body movably with respect to the rotating mechanism; A locking member provided on one of the moving mechanism and the rotating mechanism; and a locked member provided on the other of the moving mechanism and the rotating mechanism. A seat device in which the seat body is immovable with respect to the rotation mechanism when locked by a locking member; an operating member attached to the rotation mechanism and operating in a predetermined rotation angle range of the rotation mechanism; A connection member for interlocking the operating member with the locking member so that the locking member is disengaged from the locked member. 2. The rotating mechanism includes a driving unit, and an intermediate member having one end locked to the base and the other end locked to the driving unit, wherein the operating member is provided in the predetermined rotation angle range. The seat device according to claim 1, wherein the seat device is configured to operate only in cooperation with the intermediate member.