CN103732443B - Auto use chair - Google Patents

Abstract

A seat moving device for auto use chair, can utilize the rotational force of drive source (458) make seat main body along the automated manner of predetermined motion track movement and manually seat main body is exerted a force and make this seat main body along motion track movement manual mode between switch.When seat moving device is switched to manual mode, the rotating part (452) of the seat moving device rotated when seat main body moves along motion track limits mechanism (459) with single direction rotation and is connected, allow the movement of seat main body to direction in compartment, forbid that seat main body is to reciprocal movement.

Description

car seat

technical field

The invention relates to a vehicle seat.

Background technique

Japanese Patent Application Laid-Open No. 2007-161010 discloses a vehicle seat including a seat moving device capable of moving a seat body between a predetermined position inside a vehicle compartment and a position for getting on and off the vehicle outside the vehicle compartment. As shown in Figure 10, this kind of vehicle seat 100 includes: a seat body 102 used as a passenger seat; After the prescribed position I turns left about 90° toward the entrance and exit 104, the entrance and exit 104 moves to the entrance and exit position II outside the compartment.

Furthermore, a seating sensor (not shown) for detecting the presence or absence of a passenger is provided on the seat main body 102 . Moreover, the above-mentioned seat moving device is configured so that when the occupancy sensor detects that there is no occupant, that is, when no one is seated on the seat main body 102 (when the seat is empty), the seat main body 102 has a smaller height than when a person is seated. Movement speed can be performed at high speed. For this reason, for example, after the occupant gets off the vehicle at the getting on and off position II outside the compartment, the time for moving the empty seat body 102 to the predetermined position I in the compartment can be shortened, and the safety of the vehicle seat 100 can be improved. Operational flexibility.

Contents of the invention

The technical problem to be solved by the invention

However, even if the movement speed of the seat body 102 can be increased to some extent by, for example, switching the rotation speed of the motor as a driving source from low speed to high speed, it is difficult to increase it to a desired speed. In addition, when the rotational speed of the motor is switched to a high speed, the power consumption of the battery also increases.

Technical solutions adopted to solve technical problems

As one aspect of the present invention, a vehicle seat includes a seat moving device capable of moving a seat main body between a predetermined position inside a vehicle compartment and a position for getting on and off the vehicle outside the vehicle compartment. The seat moving device is configured to be able to use the rotational force of the driving source to move the seat body along a predetermined movement track and the manual method to move the seat body along the movement track by manually applying force to the seat body. switch between modes. In addition, the seat moving device is configured such that when the seat moving device is switched to the manual mode, the rotating part of the seat moving device that rotates when the seat body moves along the movement track is connected to the one-way rotation limiting mechanism. , allowing the seat body to move in the direction of the compartment, while the movement of the seat body in the opposite direction is prohibited.

Thus, when the seat moving device is switched to the manual mode, the rotating part of the seat moving device that rotates when the seat body moves along the movement track is connected to the one-way rotation limiting mechanism, allowing the seat body to move toward the vehicle compartment. inward movement. For this reason, for example, after the occupant gets off from the seat body, the seat moving device can be switched to a manual mode to move the seat body rapidly toward the interior of the vehicle compartment. In addition, since the seat main body can be manually moved toward the interior of the vehicle compartment, power consumption of the battery can be reduced.

In addition, in the case of switching to the manual mode, since the rotating part of the seat moving device is connected to the one-way rotation limiting mechanism, even if the force is stopped halfway when the seat main body is moved in the direction of the compartment, there will be no trouble. Defective condition in which the seat main body descends toward the getting on and off position side.

Description of drawings

FIG. 1 is a schematic perspective view of a vehicle seat according to an embodiment of the present invention viewed from obliquely behind a vehicle.

Fig. 2 is a schematic diagram seen from the rear of the vehicle seat.

3 is a perspective view of the front and rear sliding mechanism, the rotating mechanism, the rotating base, etc. of the vehicle seat.

Fig. 4A is a schematic side view of the driving part of the lateral sliding mechanism of the lifting mechanism on the vehicle seat.

Fig. 4B is a plan view showing a state in which the drive unit is connected to the motor side.

Fig. 5A is a schematic side view of the driving part of the lateral sliding mechanism of the lifting mechanism on the vehicle seat.

Fig. 5B is a plan view showing a state where the drive unit is connected to the one-way clutch side.

Fig. 6 is a schematic side view illustrating the operation of the vehicle seat.

Fig. 7 is a schematic side view illustrating the operation of the vehicle seat.

Fig. 8 is a schematic side view illustrating the operation of the vehicle seat.

Fig. 9 is a schematic side view showing a modified example of the drive unit of the lateral slide mechanism of the lift mechanism of the vehicle seat.

Fig. 10 is a schematic plan view illustrating the movement operation of a conventional vehicle seat.

detailed description

A vehicle seat according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9 . The vehicle seat according to the present embodiment is a vehicle seat used for getting on and off a vehicle by an elderly person, a disabled person, or the like. Here, front, rear, left, right, and up and down in the figure correspond to front, rear, left, right, and up and down of a vehicle including a vehicle seat.

As shown in FIG. 1 and the like, the vehicle seat S is a seat used as a passenger seat of a vehicle C. As shown in FIG. The vehicle seat S includes: a seat main body 10; and a seat moving device 200 for moving the seat main body 10 between a predetermined position inside the vehicle compartment and a position for getting on and off the vehicle outside the vehicle compartment.

[Seat moving device]

As shown in Fig. 2 and other schematic diagrams, the seat moving device 200 includes: a front and rear sliding mechanism 20 arranged on the vehicle floor F; a rotating mechanism 30 arranged on the front and rear sliding mechanism 20; a lifting mechanism arranged on the rotating mechanism 30 50 ; and the inner and outer sliding mechanism 70 arranged on the lifting mechanism 50 , the seat main body 10 is arranged on the inner and outer sliding mechanism 70 .

[Front and rear sliding mechanism]

The front-back slide mechanism 20 moves the seat body 10 in the front-back direction of the vehicle inside the vehicle compartment. As shown in Fig. 2 and Fig. 3, the front and rear sliding mechanism 20 includes: on the fixed base 23 of the vehicle floor F, a pair of left and right fixed side slide rails 22 extending along the front and rear direction of the vehicle are arranged; 22, a front-back slide base 21 supported in a state capable of sliding back and forth; and a drive unit 24 of the front-back slide mechanism 20 (see FIG. 2 ). The drive unit 24 includes: a drive motor 24 a provided on the fixed base 23 ; a screw shaft 24 b rotated by the drive motor 24 a ; and a nut portion 24 c fixed to the lower surface of the front-back slide base 21 . Furthermore, the front-back slide base 21 is configured to slide back and forth by screwing the screw shaft 24b of the driving section 24 and the nut section 24c.

[rotation mechanism]

The rotation mechanism 30 makes the seat main body 10 perform a horizontal rotation of about 110° between the seating position facing the front of the vehicle and the lateral position facing the entrance and exit D side of the vehicle. On the front and rear sliding base 21 of the mechanism 20.

As shown in FIG. 2 and the like, the rotating mechanism 30 includes: an inner wheel 31a fixed to the front and rear sliding base 21; an outer wheel 31b supported in a rotatable manner relative to the inner wheel 31a; and a rotating base fixed to the outer wheel 31b. 35; and a drive unit 32 for rotating the outer wheel 31b relative to the inner wheel 31a (see FIG. 2, omitted in FIG. 3). The driving unit 32 includes a rotary motor 32m and a gear transmission mechanism 32a provided on the upper surface of the front-back slide base 21 . The rotation output of the rotation motor 32m is transmitted to the outer wheel 31b through the gear transmission mechanism 32a, whereby the rotation base 35 is horizontally rotated with respect to the front-back slide base 21 .

[Outline of lifting mechanism]

As shown in FIGS. 6 to 8 , the lifting mechanism 50 lifts and lowers the seat main body 10 outside the cabin, and is installed on the rotating base 35 of the rotating mechanism 30 . The lifting mechanism 50 has: a horizontal sliding mechanism 40 capable of sliding in the horizontal direction (refer to FIGS. 4A, 4B, 5A, 5B, and 8); Link mechanism 51 (referring to Fig. 7, Fig. 8 etc.); Guide the lift guide part 57 (referring to Fig. 3) of four-joint link mechanism 51; 7, Figure 8, etc.). Furthermore, the seat main body 10 is installed on the lifting base 55 through the inner and outer sliding mechanism 70 .

As shown in FIG. 3 , the lateral sliding mechanism 40 includes: a pair of guide rails 41 installed in parallel along the left and right end edges of the rotating base 35 ; a slider 42 sliding along the guide rails 41 ; the slide base 44; and the drive unit 450 for sliding the lateral slide base 44 along the guide rail 41 (see FIGS. 4A, 4B, 5A, and 5B). The driving unit 450 is omitted in FIG. 3 .

[Drive unit of lateral slide mechanism]

4A, 4B, 5A, 5B, etc., the driving unit 450 of the present embodiment slides the lateral slide base 44 along the guide rails using a chain 451 in the form of an endless track and sprockets 452 and 453. The driving unit 450 includes: left and right paired front end side sprockets 453 arranged on the front end side (head end side) of the sliding direction of the left and right guide rails 41 on the rotating base 35; A pair of left and right rear end side sprockets 452 are directed toward the rear end side (tip end side). The left and right front end sprockets 453 are coaxially connected by a horizontal first rotation center shaft 453 p , and both ends of the first rotation center shaft 453 p are rotatably supported by bearings 453 j on the rotation base 35 . In addition, the left and right rear end sprockets 452 are similarly connected coaxially by a horizontal second rotation center shaft 452p, and both ends of the second rotation center shaft 452p are rotatably supported by bearings 452j on the rotation base 35. . As shown in FIG. 4B and FIG. 5B , the drive gear 455 and the rear-end side sprocket 452 are coaxially attached at a midway position of the second rotation central axis 452p.

On the front-end side sprocket 453 and the rear-end side sprocket 452, ring-shaped chains 451 are hung on the left and right, respectively. Moreover, the lateral sliding base 44 is covered from above the left chain 451 and the right sprocket 451 , and the lateral sliding base 44 is connected to each chain 451 by a connecting piece (not shown).

The driving gear 455 connecting the left and right rear end side sprockets 452 to the second rotation center shaft 452p meshes with the first intermediate gear 456 configured such that one end (left end) of the first intermediate gear 456 can pass through the first electromagnetic clutch 457a. It is connected with the second intermediate gear 458s. Furthermore, the second intermediate gear 458s meshes with a pinion 458w of an output shaft of a motor 458 provided on the rotary base 35 as a drive source.

In addition, the other end side (right end side) of the first intermediate gear 456 is configured to be connectable to a one-way clutch 459 provided on the rotary base 35 via a second electromagnetic clutch 457b.

The first electromagnetic clutch 457a and the second electromagnetic clutch 457b are configured such that when one of them is closed (ON), the other is open (OFF). Therefore, as shown in FIG. 4B, when the first electromagnetic clutch 457a is closed (ON) and the second electromagnetic clutch 457b is disconnected (OFF), the first intermediate gear 456 passes through the first electromagnetic clutch 457a and the second intermediate gear. The gear 458s is connected, and the connection between the first intermediate gear 456 and the one-way clutch 459 is released. Thus, the rotational force of the motor 458 is transmitted to the left and right rear sprockets through the pinion gear 458w, the second intermediate gear 458s, the first electromagnetic clutch 457a, the first intermediate gear 456, the drive gear 455, and the second rotation center shaft 452p. 452. That is, the motor 458 is connected to the left and right rear end side sprockets 452 . And, as shown by the upper arrow in FIG. 4A , when the motor 458 rotates forward, the rear end sprocket 452 turns left, whereby the chain 451 moves in the left turn direction, and the front end sprocket 453 turns left. As a result, the lateral slide base 44 connected to the upper side of the chain 451 moves forward. In addition, by reversing the motor 458 , the rear end side sprocket 452 turns rightward, whereby the chain 451 moves in the rightward direction, and the front end side sprocket 453 turns rightward. As a result, the lateral slide base 44 connected to the upper side of the chain 451 moves backward.

On the other hand, as shown in FIG. 5B, when the first electromagnetic clutch 457a is disconnected (OFF) and the second electromagnetic clutch 457b is closed (ON), the first intermediate gear 456 is connected to the one-way clutch by the second electromagnetic clutch 457b. 459 connection, its connection with the second intermediate gear 458s is released. Here, the one-way clutch 459 is a clutch mechanism that only transmits rotational force in one direction. As shown in FIG. transmit rotational force to other components).

That is, when the lateral slide base 44 is moved backward manually, the rear end side sprocket 452 rotates right under the meshing action with the chain 451, and at this time, the rotational force passes through the driving gear 455 and the first intermediate gear 456. And transmitted to the one-way clutch 459, the one-way clutch 459 turns left. On the contrary, when the lateral sliding base 44 is intended to be moved forward manually, due to the rotation locking of the one-way clutch 459, the rotation of the first intermediate gear 456, the driving gear 455 and the rear end side sprocket 452 are locked, and the lateral sliding Forward travel of the base 44 is inhibited.

[Four-joint linkage mechanism of lifting mechanism, etc.]

As shown in FIGS. 7 and 8 , the rear ends of the left and right paired four-joint linkage mechanisms 51 are connected to the horizontal slide base 44 in a vertically rotatable state. The four-joint link mechanism 51 lifts the lift base 55 in a horizontal state, and includes an inner link arm 53 and an outer link arm 52 . In addition, the rear ends of the link arms 52 and 53 are vertically rotatably supported by the sides of the lateral slide base 44 of the lateral slide mechanism 40 via support shafts (not shown). In addition, the side wall parts of the lift base 55 are respectively connected to the front end sides of the link arms 52 and 53 in a vertically rotatable state via support shafts.

Further, as shown in FIG. 3 , lift guide members 57 that support the left and right outer link arms 52 of the four-joint link mechanism 51 from below are provided at outer positions of the left and right guide rails 41 on the swivel base 35 . The lift guide member 57 is configured to convert the movement of the four-joint link mechanism 51 forward or backward together with the lateral slide base 44 into downward or upward turning movement of the four-joint link mechanism 51 . In FIGS. 6 to 8 , the lift guide member 57 is omitted.

[Inside and outside sliding mechanism]

As shown in FIGS. 7 and 8 , the lift base 55 of the lift mechanism 50 is provided with an inside-outside sliding mechanism 70 for moving the seat body 10 forward or backward relative to the lift base 55 . As shown in Figure 2, the inner and outer sliding mechanism 70 includes: a seat base 75 supporting the seat body 10; left and right paired guide rails 74a fixed on the lower surface side of the seat base 75; A slider 74b that slidably supports the above-mentioned guide rail 74a on the 55;

The driving part 76 includes: a rack 73 arranged parallel to the guide rail 74a on the lower surface of the base 75 for the seat; The gear 72 rotates the driving motor 71 .

[Seat body]

As shown in FIGS. 1 and 2 , the seat body 10 includes a seat cushion 11 and a seat back 12 , and a frame of the seat cushion 11 is connected to a seat base 75 of an inner-outer sliding mechanism 70 .

The seat body 10 is provided with a get-off switch (not shown) for making the seat body 10 get off the vehicle and a get-on switch (not shown) for making the seat body 10 get on the car. . Furthermore, a switching switch (not shown) for switching between the first electromagnetic clutch 457 a and the second electromagnetic clutch 457 b of the drive unit 450 of the lateral slide mechanism 40 is provided on the seat main body 10 .

Here, the electrical signals of the entry switch, exit switch, and changeover switch are input to the vehicle control unit (ECU). The ECU operates the front and rear sliding mechanism 20, the rotating mechanism 30, the lifting mechanism 50, and the inner and outer sliding mechanisms 70 constituting the vehicle seat S according to the electric signals of the getting-on switch and the getting-off switch. In addition, the ECU switches the first electromagnetic clutch 457 a and the second electromagnetic clutch 457 b of the drive part 450 of the lateral slide mechanism 40 according to the electric signal of the switch.

[Motion of the car seat]

First, the operation of the vehicle seat S when a person sits on the seat body 10 will be described. When a person sits on the seat main body 10, the first electromagnetic clutch 457a of the driving part 450 of the lateral sliding mechanism 40 is closed (ON), and the second electromagnetic clutch 457b is opened (OFF) by the operation of the switch (see FIG. 4B ). Accordingly, the rotational force of the motor 458 of the drive unit 450 of the lateral slide mechanism 40 can be transmitted to the left and right rear end side sprockets 452 .

In this state, when the seat main body 10 is to be moved to the position of getting on and off the vehicle, the getting off switch should be operated after the getting on and off entrance D of the vehicle C is opened. As a result, the ECU outputs a rotation signal, and the rotation mechanism 30 operates the seat body 10 in a direction to turn left. And, in the state where the seat main body 10 is rotated to the left by a certain angle, the above-mentioned ECU outputs a forward slide signal. Accordingly, while the operation of the rotation mechanism 30 continues, the front-back slide mechanism 20 moves in a direction to slide the front-back slide base 21 forward. That is, the seat main body 10 turns leftward while moving forward from a predetermined position (rotation slide).

After the rotation and sliding of the seat main body 10 starts, the above-mentioned ECU outputs a forward signal (down signal) to the lateral sliding mechanism 40 of the lifting mechanism 50 within a certain period of time, and the sliding lock of the seat main body 10 is generated by a certain amount due to the lateral sliding base 44 . move forward and be released.

As shown in FIG. 6 , thus, when the seat body 10 is rotated about 90° to face the entrance and exit D, the above-mentioned ECU outputs an outward sliding signal to the internal and external sliding mechanism 70 during the rotation and sliding period. Thus, as shown in FIG. 7 , the inner and outer sliding mechanism 70 operates, and the seat body 10 moves forward relative to the lifting base 55 of the lifting mechanism 50 . That is, the seat body 10 protrudes (slides outward) from the entrance and exit D to the outside of the vehicle compartment. And, after the outward sliding starts, the rotating mechanism 30 and the forward and backward sliding mechanism 20 stop, and the rotating and sliding ends. In this state, the seat body 10 is rotated about 110° from the position facing the front of the vehicle.

Then, during the outward sliding, the ECU outputs a forward travel signal (down signal) to the lateral slide mechanism 40 of the lift mechanism 50 . As a result, as shown in FIGS. 4A and 4B , the rear sprocket 452 rotates to the left due to the forward rotation of the motor 458 , thereby the chain 451 moves to the left, and the front sprocket 453 rotates to the left. As a result, the lateral slide base 44 connected to the upper side of the above-mentioned chain 451 travels forward to push the four-joint link mechanism 51 forward. Thus, as shown in FIG. 8 , the four-joint link mechanism 51 rotates downward under the action of the lift guide member 57 , and the seat body 10 moves forward together with the lift base 55 and descends in a horizontal state. Then, when the seat body 10 reaches the getting on and off position, the elevating mechanism 50 stops, and a series of operations of the vehicle seat S ends.

In addition, when the seat main body 10 with the occupants is moved from the getting on and off position to the interior of the vehicle compartment, the vehicle seat S operates in the opposite direction to the above-mentioned case by manipulating the getting on board switch.

Next, the operation of the vehicle seat S when the unoccupied seat body 10 (empty seat body 10 ) is moved from the getting on and off position into the vehicle compartment will be described. When the seat main body 10 is unoccupied, first manipulate the switch to make the second electromagnetic clutch 457b of the drive portion 450 of the lateral slide mechanism 40 close (ON), and make the first electromagnetic clutch 457a disconnect (OFF) (refer to FIG. 5B ). . As a result, the rear end sprocket 452 of the drive unit 450 is disconnected from the motor 458 , and the rear end sprocket 452 is connected to the one-way clutch 459 . When the seat main body 10 is lifted, the four-joint linkage mechanism 51 is used to push the lateral sliding base 44 into the rear, thereby, as shown in FIG. End side sprocket 452 turns right. Then, the clockwise rotational force of the rear sprocket 452 is transmitted to the one-way clutch 459, and the one-way clutch 459 rotates leftward. Thereby, the seat main body 10 can be raised rapidly.

Also, even if the lifting force of the seat body 10 is weakened halfway, since the reverse rotation of the one-way clutch 459 is locked, the leftward rotation of the rear end side sprocket 452 is prohibited. That is, the lateral slide base 44 and the four-joint link mechanism 51 do not move forward, and the movement (falling) of the seat body 10 in the direction of the upper and lower vehicle positions is prohibited, thereby ensuring safety.

Thus, after the seat main body 10 is raised, if the boarding switch is manipulated, the inside and outside sliding mechanism 70 will act, the seat main body 10 will retreat into the compartment (slide inward), and the rotating mechanism 30 and the front and rear sliding mechanism 20 will act to make the seat body 10 move. The seat body 10 returns to a predetermined position.

[Advantages of the Vehicle Seat of the Embodiment]

As described above, when the drive unit 450 (seat moving device) of the lateral slide mechanism 40 is switched to the manual mode, the rear end side sprocket 452 ( The rotating part of the seat moving device) is connected to the one-way clutch 459 to allow the movement of the seat main body 10 in the compartment interior direction.

For this reason, for example, after the occupant gets off the seat body 10, the driver 450 (seat moving device) of the lateral slide mechanism 40 is switched to a manual mode, so that the seat body 10 can be quickly moved toward the interior of the vehicle compartment. In addition, since the seat main body 10 can be manually moved toward the interior of the vehicle, the power consumption of the battery can be reduced.

In addition, when switching to the manual mode, since the rear end side sprocket 452 (the rotating part of the seat moving device) of the driving part 450 of the lateral slide mechanism 40 is connected to the one-way clutch 459 (one-way rotation limiting mechanism), even if the When the seat body 10 is moved toward the interior of the vehicle, the force is stopped halfway, and the seat body 10 does not move (fall) in the direction of the upper or lower vehicle position.

In addition, the drive unit 450 (seat moving device) of the lateral slide mechanism 40 uses the first electromagnetic clutch 457a and the second electromagnetic clutch 457b to connect the rear end side sprocket 452 (rotation unit) of the drive unit 450 with the motor 458 or the single By connecting to the clutch 459, switching between the automatic mode and the manual mode is performed. That is, utilize the action of first electromagnetic clutch 457a and second electromagnetic clutch 457b, make motor 458 and left and right rear end side sprockets 452 be connected and switch to automatic mode, make one-way clutch 459 and left and right rear end side sprockets 452 connection and switch to manual mode.

Therefore, switching between the automatic mode and the manual mode can be easily performed on the drive unit 450 (seat moving device) of the lateral slide mechanism 40 .

[modified example]

As mentioned above, the embodiment of the present invention has been described with reference to the above structure. However, it is self-evident for those skilled in the art that many substitutions, improvements, or changes can be made without departing from the object of the present invention. Therefore, the embodiments of the present invention may include all alterations, improvements, or changes that do not depart from the spirit and purpose of the claims. Embodiments of the present invention are not limited to the specific structure described above, and may be modified as follows, for example.

Belts and pulleys can be used instead of the chain 451 , the front sprocket 453 and the rear sprocket 452 in the embodiment of the present invention for the circular track-shaped chain and sprocket constituting the driving portion 450 of the lateral slide mechanism 40 .

In addition, as shown in FIG. 9 , the driving part 450 of the lateral slide mechanism 40 can also be screwed with the screw shaft 462 by a screw shaft 462 capable of rotating around the axis, and the rotation of the screw shaft 462 can be used to move along the screw shaft 462 . The nut part 464 which moves the lever shaft 462 is comprised. In this case, it is necessary to set the lead angle between the screw shaft 462 and the nut portion 464 so that the nut portion 464 can be manually moved along the screw shaft 462 . Furthermore, by configuring one end side of the screw shaft 462 to be connectable to the motor 458 by using the first electromagnetic clutch 457a, the other end side of the screw shaft 462 is configured to be connectable to the one-way clutch by using the second electromagnetic clutch 457b. 459, so that the driving part 450 of the lateral sliding mechanism 40 can be switched between automatic mode and manual mode.

In addition, in the present embodiment, the drive unit 450 of the lateral slide mechanism 40 in the lift mechanism 50 of the vehicle seat S can be switched between an automatic mode and a manual mode. However, the inside and outside sliding mechanism 70 of the vehicle seat S may be configured to be switched between an automatic mode driven by a motor and a manual mode using a one-way clutch.

In addition, instead of the one-way clutch of the present embodiment, a ratchet mechanism composed of a gear and a pawl that allows only one-way rotation may be used as the one-way rotation limiting mechanism.

Claims (4)

1. A vehicle seat, comprising a seat moving device that moves the seat body between a predetermined position in the compartment and a position for getting on and off the compartment outside the compartment, and the seat moving device can be operated between an automatic mode and a manual mode In the automatic mode, the rotating force of the driving source can be used to make the seat body move along a predetermined movement track; in the manual mode, the seat body can be moved by manually applying force to the seat body. The main body moves along the movement trajectory, characterized in that, When the seat moving device is switched to the manual mode, the rotating part of the seat moving device that rotates when the seat body moves along the moving track is connected to a one-way rotation limiting mechanism, Movement of the seat main body in the direction of the compartment is permitted, and movement of the seat main body in the opposite direction is prohibited. 2. The vehicle seat according to claim 1, characterized in that, The seat moving device can be switched between an automatic mode and a manual mode by connecting the rotation unit of the seat moving device to the drive source or the one-way rotation limiting mechanism by using a clutch. 3. The vehicle seat according to claim 2, characterized in that, The seat moving device includes an annular track suspended on a plurality of sprockets, and the sprockets serve as the rotating part and are connected to the driving source or the one-way rotation limiting mechanism. 4. The vehicle seat according to claim 2, characterized in that, The seat moving device includes: a screw shaft that can rotate around the axis at a fixed position; nuts, The lead angle between the screw shaft and the nut is set so that the nut can be manually moved along the screw shaft, The screw shaft as the rotating part can be connected to the driving source or the one-way rotation limiting mechanism.