JP5200478B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat that enables an elderly person or a disabled person (hereinafter simply referred to as a seated person) to easily get on and off the vehicle.

As this type of vehicle seat, there is a seat body, a rotation mechanism that horizontally rotates the seat body between a seating position facing the vehicle forward and a lateral position facing the door opening side, and the seat body is in the lateral position. Some of them include a slide mechanism that slides the seat body in the forward or backward direction with respect to the rotation mechanism, and a rotation lock mechanism that restricts the rotation of the seat body at the seating position and the lateral position. According to this vehicle seat, after the seat body is rotated to the sideways position, the passenger can easily get on and off the vehicle by sliding the seat body to the outside through the door opening.
As the rotation lock mechanism, a mechanism described in JP-A-2001-97081 (Patent Document 1) can be used. This rotation lock mechanism engages the engagement portion on the rotation side (seat body side) with an elastic force or the like to the engaged portion provided on the vehicle floor side corresponding to the seating position and the lateral position of the seat body. Thus, the rotation lock is performed, and the engagement portion is operated by an actuator or the like to release the engagement between the engaged portion and the engagement portion, thereby performing the rotation unlock.
However, because the engaged portion for the lateral position cannot be disposed at a position where the engaging portion can be engaged in space, or for other reasons, the rotation is restricted at the lateral position separately from the rotation lock mechanism for the sitting position. Mechanism may be required. In this case, for example, a rotation lock mechanism for the seating position using the engaging portion, the member to be joined, and the actuator is used, and a rotation lock mechanism similar to this is separately provided as the rotation lock mechanism for the lateral position. However, the number of dedicated actuators will increase, which will greatly increase the cost.
Therefore, as a technique for restricting the rotation of the seat body in the sideways position, the inventor of the present application brings a stopper rubber provided on the rotation side into contact with a stopper portion provided on the vehicle floor side in the sideways position, and this state of the rotation mechanism is Developed technology to hold by driving force.
JP 2001-97081 A

However, in the above-described technique, when an external force in the width direction is applied to the seat body when the seat body is moved from the lateral position to the outside of the passenger compartment when the vehicle gets on and off, the moment load is directly applied to the rotation mechanism. Therefore, the rotation mechanism (for example, a motor constituting this mechanism) may be damaged.
The present invention has been made to solve the above-described problems, and the problem to be solved by the present invention is that it can receive a moment load due to an external force applied to the seat body in a lateral position and is a dedicated actuator. It is providing the vehicle seat provided with the rotation lock mechanism which does not require.

The above-described problems are solved by the inventions of the claims.
The invention according to claim 1 is a seat body, a rotation mechanism for horizontally rotating the seat body between a seating position facing the vehicle front and a lateral position facing the door opening side, and the seat body is in the lateral position. A slide mechanism capable of moving the seat body to the outside or inside of the vehicle interior relative to the rotation mechanism, and a rotation lock mechanism that restricts the rotational operation of the seat body at the lateral position. A vehicle seat, wherein the rotation mechanism is configured to be rotatably supported with respect to a vehicle floor, and is configured to be horizontally rotatable with respect to the rotation support portion. The slide mechanism, the seat body, And the slide mechanism includes a slide part that can slide together with the seat body to the outside or inside of the vehicle interior. A locking mechanism provided on the rotation support portion side of the rotation mechanism and an engagement portion provided on the rotation portion side of the rotation mechanism and not engaged with the engagement portion in the lateral position. Provided on the sliding portion of the sliding mechanism and the engaging portion configured to be switchable between a locked state and a locked state that engages with the engaged portion, and moves to the vehicle interior side together with the sliding portion After the operation is brought into contact with the engagement portion and the engagement portion in the locked state is changed to the unlocked state, the contact with the engagement portion is continued to the slide completion position and the unlocked state is continued. And an unlocking portion for holding the motor.

According to the present invention, when the seat body is moved from the lateral position to the outside of the passenger compartment when the vehicle gets on and off, the engagement portion of the rotation lock mechanism provided on the rotation portion side is in the locked state and the rotation support portion side is moved to the rotation support portion side. It is engaged with the provided engaged portion. For this reason, even if the external force in the width direction with respect to the sheet main body is amplified and a large rotational force is applied to the rotation mechanism, this is received by the engaging portion and the engaged portion. As a result, damage to the rotating mechanism can be prevented.
Furthermore, the lock release part is provided in the slide part of the slide mechanism, and after the engaging part in the locked state is changed to the unlocked state by the operation of retreating together with the slide part , the unlocked state is maintained . For this reason, it becomes unnecessary to provide an actuator for releasing the lock state of the rotation lock mechanism.

According to a second aspect of the present invention, there is provided an urging means for urging the engaging portion to the locked state, and the engaging portion is moved together with the sliding portion as the unlocking portion moves to the outside of the vehicle compartment. The portion is configured to change from the unlocked state to the locked state by the biasing force of the biasing means.
For this reason, even if the unlocking part and the slide part are separated from the engaging part, the engaging part can be held in the locked state.
According to the invention of claim 3, the engaging portion includes the engaging portion main body that can be engaged with the engaged portion, and a transmission portion that transmits the force received from the lock releasing portion to the engaging portion main body. It is characterized by that.
For this reason, the freedom degree of arrangement | positioning of the said engaging part main body and the said lock release part improves.

According to a fourth aspect of the present invention, the engaging portion is composed of a fixed member fixed to the rotating portion of the rotating mechanism and a movable member connected to the rotating portion so as to be movable between the locked position and the unlocked position. The fixed member is in contact with or close to the engaged portion from the rotating direction in a state where the rotating portion of the rotating mechanism is rotated to a lateral position of the seat body, and the movable member is In the locked position, the contacted portion is brought into contact with or close to the engaged portion from the opposite side of the fixing member, and is moved away from the engaged portion by being moved to the unlocked position by the unlocking portion. It is characterized by that.
Here, “proximity” refers to a state in which the two are approaching to such an extent that they can be regarded as almost contacting but not contacting.
Thus, since the engaging portion is configured to be in a rotationally locked state by sandwiching the engaged portion between the fixed member and the movable member, the structure of the fixed member and the movable member can be simplified. Furthermore, since only the movable member of the engaging portion is moved by the lock releasing portion, the operation of the engaging portion is simplified. For this reason, the cost reduction of a rotation lock mechanism can be aimed at.

According to the present invention, even if the external force in the width direction with respect to the sheet main body is amplified and a large rotational force is applied to the rotation mechanism, this is received by the engaging portion and the engaged portion. Can be prevented.
Further, since the lock release unit moves together with the slide unit of the slide mechanism, it is not necessary to provide an actuator for releasing the lock state of the rotation lock mechanism.

[Embodiment 1]
Hereinafter, based on FIGS. 1-11, the vehicle seat which concerns on Embodiment 1 of this invention is demonstrated. The vehicle seat according to the present embodiment is a seat used for a passenger seat of a vehicle, and FIG. 1 shows a schematic plan view of a vehicle including the vehicle seat. 2 is a schematic rear view of the vehicle seat (viewed in the direction of arrow II in FIG. 1), FIGS. 3 to 5 are side views showing the operation of the vehicle seat, and FIGS. 6 to 10 are views of the vehicle seat. It is an exploded perspective view showing a rotation lock mechanism, a longitudinal section, and a top view. FIG. 11 is a plan view showing a gear transmission mechanism of the rotation mechanism.
Note that the front, rear, left and right in the figure correspond to the front, rear, left and right of the vehicle.

<About the outline of the vehicle seat S>
As shown in FIG. 1, the vehicle seat S according to the present embodiment horizontally moves the seat body 10 from a vehicle-facing seating position (see solid line) to a lateral position (see a two-dot chain line) facing the door opening D side. It is a device that, after being rotated, moves horizontally forward from the door opening D to the outside of the passenger compartment, and further advances and descends to the boarding / alighting assist position, and is configured to return the seat body 10 to the seating position by the reverse operation.
As shown in FIG. 2, the vehicle seat S includes a front / rear slide mechanism 20 installed on a vehicle floor F, a rotation mechanism 30 installed on a front / rear slide base 21 of the front / rear slide mechanism 20, and the rotation mechanism. 30. The lifting mechanism 50 and the second slide mechanism 70 installed on the rotation base 35, the seat body 10 installed on the second slide mechanism 70, and the rotation of the rotation base 35 in the lateral position are restricted. And a rotation lock mechanism 80. As shown in FIG. 3 and the like, the seat body 10 includes a seat cushion 11 and a seat back 12, and the seat cushion 11 is integrated with a seat base 75 of the second slide mechanism 70.

<Fore-and-aft slide mechanism 20>
The front / rear slide mechanism 20 is a mechanism that moves the seat body 10 in the vehicle front-rear direction. As shown in FIGS. 2 and 6, the front / rear slide mechanism 20 includes a pair of left and right fixed side rails 22 installed on the fixed base 23 of the vehicle floor F so as to extend in the vehicle front-rear direction, and the fixed side rails 22. Are provided with a front / rear slide base 21 supported in a slidable state, and a drive mechanism 24 as a drive source for the front / rear slide mechanism 20.
As shown in FIG. 2, the fixed-side rail 22 has a substantially U-shaped cross section, and a movable rail portion 21 s formed on the left and right end edges of the front and rear slide base 21 is housed in the substantially U-shaped recess. Yes. A large number of balls 26 are rotatably fitted in upper and lower gaps formed between the movable rail portion 21s and the fixed rail 22. Thereby, the front / rear slide base 21 can move smoothly along the fixed rail 22.
The drive mechanism 24 includes a drive motor 24 a installed on the fixed base 23, a screw shaft 24 b rotated by the drive motor 24 a, and a nut 24 c fixed to the lower surface of the front and rear slide base 21.
The screw shaft 24b is supported so as to be rotatable around an axis in a state parallel to the fixed-side rail 22, and a rotating shaft (not shown) of the drive motor 24a is coaxially connected to one end of the screw shaft 24b. . A nut 24c fixed to the lower surface of the front / rear slide base 21 is screwed onto the screw shaft 24b. As a result, the screw shaft 24b is rotated forward or reversely by the action of the drive motor 24a, so that the front / rear slide base 21 is slid back and forth by the screwing action of the screw shaft 24b and the nut 24c.

<About Rotating Mechanism 30>
A rotation mechanism 30 is installed on the front / rear slide base 21. The rotation mechanism 30 is a mechanism that rotates the seat body 10 by approximately 90 ° between a front-facing seating position and a lateral position facing the door opening D side.
The rotation mechanism 30 includes a front / rear slide base 21, an inner ring 31a fixed on the front / rear slide base 21, an outer ring 31b supported to be rotatable with respect to the inner ring 31a, a rotation base 35 fixed to the outer ring 31b, And a drive mechanism 32 that is a drive source of the rotation mechanism 30. The inner ring 31a is formed with a V-groove in the outer circumferential direction, and the outer ring 31b is similarly formed with a V-groove in the inner circumferential direction. A large number of balls (not shown) are sandwiched between the V groove of the inner ring 31a and the V groove of the outer ring 31b. As a result, the outer ring 31b can be rotated smoothly and without rattling with respect to the inner ring 31a.
As shown in FIG. 11, the drive mechanism 32 includes a rotary motor 32m and a gear transmission mechanism 32a installed on the upper surface of the front and rear slide base 21. Then, the rotation output of the rotary motor 32m is transmitted to the outer ring 31b via the gear transmission mechanism 32a, whereby the rotation base 35 rotates with respect to the front / rear slide base 21. That is, the gear transmission mechanism 32a includes a first gear 32x on the side of the rotary motor 32m and a second gear 32y on the side of the outer ring 31b, which are engaged with each other, and the rotation of the rotary motor 32m is the first gear 32x and the second gear 32y. It is transmitted to the outer ring 31b through the gear 32y. The second gear 32y is configured to be movable between a position where the rotation center coincides with the rotation center of the outer ring 31b and a position deviating from the rotation center of the outer ring 31b (see a two-dot chain line), and the rotation motor 32m. Is transmitted to the outer ring 31b, the rotation center of the second gear 32y coincides with the rotation center of the outer ring 31b. However, if the rotary motor 32m further rotates in the same direction with the rotation base 35 rotating horizontally to the right and the seat body 10 being returned to the seating position facing forward, the meshing of the first gear 32x and the second gear 32y. As a result, the second gear 32y moves in the direction of the two-dot chain line, and the rotation center of the second gear 32y deviates from the rotation center of the outer ring 31b. As a result, when the rotation base 35 and the outer ring 31b are rotated by receiving an external force, the first gear 32x and the second gear 32y interfere with each other, and the rotation of the seat body 10 and the rotation base 35 is restricted. That is, in a state where the seat body 10 is in the seating position facing the front of the vehicle, the seat body 10 and the rotation base 35 are rotationally locked by the action of the gear transmission mechanism 32a.
When the rotation motor 32m is operated so as to horizontally rotate the rotation base 35 and the sheet main body 10 in the horizontal direction, that is, horizontally in the lateral direction, the second gear 32x and the second gear 32y are engaged with each other. The gear 32y moves its rotation center in a direction coinciding with the rotation center of the outer ring 31b, and the rotation lock of the rotation base 35 is automatically released.
That is, the front / rear slide base 21 and the inner ring 31b correspond to the rotation support part of the rotation mechanism in the present invention, and the rotation base 35 and the outer ring 31b correspond to the rotation part of the rotation mechanism in the present invention.

<About lifting mechanism 50>
An elevating mechanism 50 is installed on the rotation base 35. The elevating mechanism 50 is a first slide mechanism 40 serving as a horizontal driving source, a four-bar link mechanism 51 that rotates in the vertical direction in response to a slide operation of the first slide mechanism 40, and guides the four-bar link mechanism 51. And a lifting base 55 that is lifted and lowered by the four-bar linkage mechanism 51. The seat body 10 is installed on the lift base 55 via the second slide mechanism 70.
As shown in FIGS. 2 and 6, the first slide mechanism 40 includes a pair of guide rails 41 attached in parallel along the left and right edges of the rotation base 35, and a slide that slides along the guide rails 41. A child 42, a first slide base 44 placed on the slider 42, and a drive mechanism 45 for sliding the first slide base 44 are provided. The guide rail 41 is formed in a prismatic shape, and V-grooves into which a large number of balls are fitted are formed in the longitudinal direction on both side surfaces of the guide rail 41. The slider 42 has a U-shaped cross section and is configured to be fitted into the guide rail 41 from above. Between the left and right inner surfaces of the slider 42 and the left and right V grooves of the guide rail 41 The numerous balls are sandwiched. The left and right sliders 42 are fixed to the lower surfaces of the left and right sides of the first slide base 44. As a result, the first slide base 44 can slide forward and backward along the left and right guide rails 41.
As shown in FIG. 2, the drive mechanism 45 includes a screw shaft 45b installed on the rotation base 35, a drive motor 45a for rotating the screw shaft 45b, and a nut 45c fixed to the lower surface of the first slide base 44. And.
As shown in FIG. 2, the screw shaft 45b is supported so as to be rotatable around the shaft center in a state parallel to the guide rail 41, and a rotation shaft (not shown) of the drive motor 45a is provided at one end of the screw shaft 45b. Are connected coaxially. A nut 45c on the lower surface of the first slide base 44 is screwed onto the screw shaft 45b. As a result, the screw shaft 45b is rotated forward or reversely by the action of the drive motor 45a, so that the first slide base 44 is moved along the guide rail 41 on the rotary base 35 by the screwing action of the screw shaft 45b and the nut 45c. Move forward and backward.

The pair of left and right four-bar linkage mechanisms 51 includes an inner link arm 53 and an outer link arm 52, respectively. And the base end part of both the link arms 52 and 53 is each supported by the side part of the 1st slide base 44 so that vertical rotation is possible via a spindle (illustration omitted). Further, as shown in FIGS. 3 to 5 and the like, the side walls of the elevating base 55 are connected to the distal ends of the link arms 52 and 53 via a support shaft in a state in which the side walls can be vertically rotated. The support shafts of both link arms 52 and 53 are displaced in the front-rear direction of the seat body 10.
As the first slide base 44 of the first slide mechanism 40 moves forward, the pair of left and right four-bar linkage mechanisms 51 move forward and rotate downward as described later. Further, as the first slide base 44 moves backward, the pair of four-bar linkage mechanisms 51 move backward while rotating backward as described later.

As shown in FIG. 6, the guide mechanism 57 is installed on both the left and right sides of the rotation base 35, and supports the left and right outer link arms 52 of the four-bar linkage mechanism 51 from below. Then, the forward or backward movement of the four-bar linkage mechanism 51 is converted into the downward or upward movement of the lifting base 55. 3 to 5, the guide mechanism 57 is omitted. That is, when both link arms 52 and 53 of the four-bar linkage mechanism 51 move forward as the first slide base 44 advances, the distance between the front end portion of the guide mechanism 57 and the first slide base 44 decreases, and the four-bar link The mechanism 51 rotates downward about the support shaft of the first slide base 44. Thereby, the raising / lowering base 55 connected with the front-end | tip of the four-bar linkage mechanism 51 descends horizontally, moving forward. As a result, the seat body 10 on the lifting base 55 is also moved downward together with the lifting base 55 and horizontally lowered.
Further, when both link arms 52 and 53 of the four-bar linkage mechanism 51 are retracted as the first slide base 44 is retracted, the distance between the front end portion of the guide mechanism 57 and the first slide base 44 is increased, and the four-bar link. The mechanism 51 rotates upward about the support shaft of the first slide base 44. As a result, the elevating base 55 connected to the tip of the four-bar linkage mechanism 51 and the seat main body 10 on the elevating base 55 are raised and retracted.
That is, the first slide base 44 of the first slide mechanism 40 corresponds to the slide portion of the slide mechanism of the present invention that can slide together with the seat body to the outside of the vehicle interior or the interior of the vehicle interior.

<About the second slide mechanism 70>
The second slide mechanism 70 is a mechanism for moving the seat body 10 forward or backward on the lift base 55. The second slide mechanism 70 slides the guide rail 74 a on the elevating base 55 and a pair of left and right guide rails 74 a fixed to the lower surface side of the seat base 75. A slider 74 b that is movably supported and a drive mechanism 76 that is a drive source of the second slide mechanism 70 are provided.
The pair of left and right guide rails 74a are fixed to the lower surface of the seat base 75 in a state of being positioned so as to extend in the front-rear direction of the seat on both the left and right sides of the lower surface of the seat base 75. The guide rail 74a is formed in a prismatic shape, and V-grooves into which a large number of balls are fitted are formed in the longitudinal direction on both side surfaces of the guide rail 74a. Each guide rail 74a is fitted to a slider 74b having a U-shaped cross section provided on the elevating base 55 with the plurality of balls interposed therebetween. As a result, the seat body 10 and the seat base 75 can slide in the seat front-rear direction with respect to the lift base 55 by the action of the guide rail 74a and the slider 74b.
The drive mechanism 76 includes a rack 73 formed in parallel with the guide rail 74 a on the lower surface of the seat base 75, a drive motor 71 provided on the elevating base 55, and a structure rotated by the drive motor 71. 73 and a pinion 72 that meshes with 73. As a result, the pinion 72 is rotated forward or reversely by the action of the drive motor 71, so that the seat body 10 and the seat base 75 are moved in the seat longitudinal direction with respect to the lift base 55 by the meshing action of the rack 73 and the pinion 72. It comes to slide.

<About rotation lock mechanism 80>
As shown in FIG. 6, the rotation lock mechanism 80 includes an engaged portion 180 installed on the front and rear slide base 21, an engagement portion 280 provided on the lower side of the rotation base 35, and the first slide mechanism 40. And a lock release portion 380 provided at the rear end of the first slide base 44.
As shown in FIG. 6, the engaged portion 180 is installed on the right side of the outer ring 31 b and the inner ring 31 a of the rotation mechanism 30 at the position of the rear portion of the front and rear slide base 21. The engaged portion 180 includes a fixed plate 182 having a substantially planar shape and a pair of (front and rear) receiving pins 184 on which an engaging portion 280 described later is hung.
A pair of arc-shaped long holes 183 are formed on the same arc line at a base end portion of the fixed plate 182, that is, on the lower bottom side of the trapezoid, with a space therebetween. The fixing plate 182 is bolted to the upper surface of the front / rear slide base 21 using the long holes 183 so that the arc centers of the long holes 183 coincide with the centers of the outer ring 31b and the inner ring 31a. Accordingly, the fixing plate 182 is fixed to the front and rear slide base 21 in a state where the fixing plate 182 is overlaid on the upper surface of the front and rear slide base 21.
The receiving pin 184 is erected on the tip of the fixed plate 182, that is, on the upper bottom side of the trapezoid. The front receiving pin 184 is a spare pin that is actually used as a spare, and the front and rear receiving pins 184 are arranged on an arc line that coincides with the centers of the outer ring 31b and the inner ring 31a.

The engaging part 280 is composed of an engaging part main body 281 and a transmission part 285.
The engaging portion main body 281 is configured to be horizontally rotatable between a locked position and an unlocked position as will be described later when the rotation base 35 is rotated to the horizontal position. The receiving pin 184 engages with the rotation base 35 in the rotation direction. As shown in FIGS. 6 and 7, the engagement portion main body 281 is attached to the center right side of the lower surface of the rear portion of the rotation base 35 so as to be horizontally rotatable by a connecting pin 282.
As shown in FIGS. 8 to 10, the engaging portion main body 281 includes a support portion 283 in which an insertion hole 283 h of the connecting pin 282 is formed, a flange portion 284 that is hung on the receiving pin 184 of the engaged portion 180, and It is comprised from the linear wall part 281k which receives the transmission pin 285p of the transmission part 285 mentioned later. A notch groove 284 c having a substantially arc shape is formed in the flange portion 284, and the arc center of the notch groove 284 c is configured to coincide with the axis of the connecting pin 282. The notch groove 284c is opened radially outward with reference to the rotation center C of the rotation mechanism 30 in FIG. 8 and the like, and the width dimension of the back part (radially inner end) of the notch groove 284c is as follows. It is set to a value approximately equal to the diameter dimension of the receiving pin 184 of the engaged portion 180.

Further, a spring receiver 280a is formed at the position of the support portion 283 of the engaging portion main body 281, and the engaging portion main body 281 rotates counterclockwise around the connecting pin 282 (moves radially outward) to the spring receiver 280a. One end of the coil spring 280b biased in the direction to be moved is connected. The other end of the coil spring 280b is connected to a spring receiver 35z formed on the lower surface of the rotation base 35.
Here, as shown in FIG. 7, the support portion 283 and the connection pin 282 of the engagement portion main body 281 are configured to receive pins of the engaged portion 180 when the rotation base 35 rotates between the seating position and the lateral position. It is positioned at a position higher than the receiving pin 184 so that the 184 does not contact. Further, as shown in FIG. 7, the flange portion 284 of the engaging portion main body 281 is positioned in a state of protruding downward from the support portion 283 so as to be engageable with the receiving pin 184 of the engaged portion 180. Has been.
8 and 9 show a state in which the engaging portion main body 281 has rotated to the right rotation limit position around the connecting pin 282 against the spring force of the coil spring 280b, as will be described later. When this position is the unlock position of the engaging portion main body 281 and the rotation base 35 is rotated counterclockwise to the horizontal position, the receiving pin 184 of the engaged portion 180 is formed in the notch groove 284c as shown in FIG. The engaging portion main body 281 is positioned so as to contact the open end. When the engaging portion main body 281 is in the unlock position, the rotation base 35 can be rotated clockwise from the lateral position to the seating position.
Further, as will be described later, in a state where the rotation base 35 is in the lateral position, the engagement portion main body 281 is rotated to the left rotation limit position around the connection pin 282 by the spring force of the coil spring 280b as shown in FIG. Then, the receiving pin 184 of the engaged portion 180 moves relatively along the notch groove 284c of the engaging portion main body 281 to the back of the notch groove 284c. As a result, the engagement portion main body 281 and the receiving pin 184 of the engaged portion 180 are engaged in the rotation direction of the rotation base 35, and the rotation of the rotation base 35 is restricted. This position is the lock position of the engaging portion main body 281.
That is, the coil spring 280b corresponds to the biasing means of the present invention.

The transmitting portion 285 of the engaging portion 280 transmits the force received from the unlocking portion 380 described later to the engaging portion main body 281 and rotates the engaging portion main body 281 to the right rotation limit position (unlock position). It is a member. As shown in FIG. 6, the transmission portion 285 is attached to the left end portion of the lower surface of the rear portion of the rotation base 35 so as to be horizontally rotatable by a connecting pin 286.
As shown in FIGS. 8 to 10, the transmission portion 285 includes a substantially elliptical support portion 287 in which an insertion hole 287 h of the connecting pin 286 is formed, and a lever protruding from the support portion 287 toward the engagement portion main body 281. Part 288. Further, the transmission pin 285p described above is erected on the lever portion 288 so that the straight wall portion 281k of the engaging portion main body 281 and the outer peripheral surface are in contact with each other on the top surface of the distal end. The straight wall portion 281k of the engaging portion main body 281 is formed on the opposite side of the spring receiver 280a across the connecting pin 282 of the engaging portion main body 281. The transmission pin 285p of the lever portion 288 of the transmission portion 285 is in contact with the linear wall portion 281k from the direction that restricts the left rotation of the engagement portion main body 281 by the coil spring 280b.
On the support portion 287 of the transmission portion 285, a roller support pin 289s is erected at a position opposite to the transmission pin 285p with the connecting pin 286 interposed therebetween. As shown in FIG. 7, the roller support pin 289s protrudes from the left outer side of the rotation base 35 to the front side of the rotation base 35, and a rotation roller 289r is attached to the upper end of the roller support pin 289s.

The transmission portion 285 is configured to rotate counterclockwise around the connecting pin 286 when the rotation roller 289r is pressed backward (upward in FIG. 10) by the lock release portion 380 described later. Yes. As a result, the transmission pin 285p of the transmission portion 285 presses the straight wall portion 281k of the engagement portion main body 281, and the engagement portion main body 281 resists the spring force of the coil spring 280b and is in the unlock position direction around the connection pin 282. Turn right.
As shown in FIGS. 6 and 10, the unlocking portion 380 is provided at the left end of the rear end of the first slide base 44, and the rotation roller 289 r of the transmission portion 285 is moved when the first slide base 44 moves backward. It is configured to be able to press backward (upward in FIG. 10). Then, when the unlocking portion 380 presses the rotating roller 289r in the backward direction (upward in FIG. 10), the transmitting portion 285 rotates counterclockwise around the connecting pin 286, and the transmitting pin 285p of the transmitting portion 285 is engaged. The engaging portion main body 281 is rotated clockwise to the unlocked position via the straight wall portion 281k of the main portion 281.
As shown in FIGS. 8 to 10, the unlocking portion 380 has a left vertical wall 381 extending in the sliding direction of the first slide base 44 and a horizontal position of about 45 ° in the left rotation direction at the rear end position of the left vertical wall 381. And a rear vertical wall 384 bent horizontally about 45 ° horizontally in the left rotation direction at the rear end position of the inclined vertical wall 382.

  The inclined vertical wall 382 of the unlocking portion 380 presses the rotating roller 289r of the transmission portion 285 in the backward direction (upward in the drawing) when the first slide base 44 moves backward (moves upward in FIGS. 9 and 10). Part. When the rotating roller 289r of the transmitting portion 285 is pressed backward by the inclined vertical wall 382 of the unlocking portion 380, as described above, the transmitting portion 285 rotates counterclockwise around the connecting pin 286, and the rotating roller 289r is inclined. It moves to the left vertical wall 381 side along the vertical wall 382. Thereby, the engaging part main body 281 rotates rightward from the lock position around the connecting pin 282 against the spring force of the coil spring 280b. Then, with the transmission unit 285 rotated to the left rotation limit position, the rotation roller 289r of the transmission unit 285 moves from the inclined vertical wall 382 of the unlocking unit 380 toward the left vertical wall 381 as shown in FIG. . In this state, the engaging portion main body 281 is held at the right rotation limit position (unlock position). Even if the first slide base 44 further moves back to the retreat limit position from this state, the rotation roller 289r of the transmission unit 285 only moves forward along the left vertical wall 381 of the lock release unit 380 (see FIG. 8). ), The transmission portion 285 is held at the left rotation limit position as it is, and the engagement portion main body 281 is similarly held at the unlock position.

<About the operation outline of the vehicle seat S>
In the state where the seat body 10 is in the seating position in the vehicle compartment, the rotation center of the second gear 32y (see FIG. 11) of the gear transmission mechanism 32a in the rotation mechanism 30 is deviated from the rotation center of the rotation base 35. The rotation base 35 is rotationally locked by the action of the gear transmission mechanism 32a.
Further, as shown in FIG. 8, the first slide base 44 of the first slide mechanism 40 is in the retreat limit position, and the engaging portion 280 of the rotation lock mechanism 80 is held in the unlocked state. That is, the rotation roller 289r of the transmission portion 285 of the engagement portion 280 is supported by the left vertical wall 381 of the lock release portion 380 and held at the left rotation limit position, whereby the engagement portion main body 281 is brought into the spring force of the coil spring 280b. On the other hand, it is held in the right rotation limit position, that is, the unlock position.
In order to move the seat body 10 from this state to the boarding / alighting assist position outside the passenger compartment, first, the seat body 10 is moved to the indoor rotation position by the front / rear slide mechanism 20, and then the seat body 10 is moved to the door opening by the rotation mechanism 30. Rotate left by about 90 degrees horizontally to the side facing D. That is, when the rotation motor 32m operates in the direction to rotate the rotation base 35 counterclockwise, the second gear 32y of the gear transmission mechanism 32a is returned to the direction in which the rotation center coincides with the rotation center of the rotation base 35 and the outer ring 31b. The rotation lock of the rotation base 35 is automatically released. Thereafter, the rotation base 35 and the seat main body 10 are horizontally rotated to the horizontal position so that the engaged portion 180 of the rotation lock mechanism 80 fixed on the front / rear slide base 21 as shown in FIG. The open end of the notch groove 284 c of the engaging portion main body 281 contacts the receiving pin 184.

Further, before the horizontal rotation of the sheet main body 10 by the rotation mechanism 30 is finished, the second slide mechanism 70 on the lifting base 55 of the four-bar linkage mechanism 51 operates as shown in FIG. Move forward out of the passenger compartment.
Then, before the advancement of the seat body 10 by the second slide mechanism 70 is completed, the first slide mechanism 40 on the rotation base 35 operates and the first slide base 44 and the lock release unit 380 are moved relative to the rotation base 35. It moves forward (moves downward in FIG. 9) from the retreat limit position. As a result, as shown in FIG. 9, the rotating roller 289 r of the transmission unit 285 moves backward (moves upward in the drawing) along the left vertical wall 381 of the unlocking unit 380 in the direction of the inclined vertical wall 382. That is, the rotation roller 289r of the transmission unit 285 is relatively retracted along the left vertical wall 381 in a state where the engagement unit main body 281 is held at the unlocked position and the transmission unit 285 is held at the left rotation limit position. When the rotation roller 289r of the transmission unit 285 moves from the left vertical wall 381 of the lock release unit 380 to the inclined vertical wall 382 as the first slide base 44 and the lock release unit 380 move forward, the clockwise rotation of the transmission unit 285 is performed. Permissible. That is, when the transmission unit 285 is allowed to rotate right by the advancement of the lock release unit 380, the engagement portion main body 281 is rotated leftward by the spring force of the coil spring 280b, and the linear wall portion of the engagement portion main body 281 is rotated. 281k presses the transmission pin 285p of the transmission unit 285 in the clockwise direction. Thereby, the rotation roller 289r of the transmission part 285 moves rearward (upward in FIG. 9) along the inclined vertical wall 382. Then, as the engaging portion main body 281 rotates in the left direction, the receiving pin 184 of the engaged portion 180 is relative to the inner side of the notched groove 284c along the notched groove 284c of the engaging portion main body 281. Move to. In this way, the engagement portion main body 281 rotates to the left rotation limit position (lock position), and the engagement portion main body 281 and the receiving pin 184 of the engaged portion 180 are engaged in the rotation direction of the rotation base 35. In this case, as shown in FIG. 10, the engaging portion main body 281 is held at the lock position, and the transmission portion 285 is held at the right rotation limit position. That is, the engaging portion 280 of the rotation lock mechanism 80 is held in a locked state.

When the engaging portion 280 of the rotation lock mechanism 80 is held in the locked state, the first slide mechanism 40 stops.
When the advancement of the seat body 10 by the second slide mechanism 70 is completed, that is, when the seat body 10 advances to the advance limit position with respect to the lifting base 55, the first slide mechanism 40 operates again and the first slide mechanism 40 operates. One slide base 44 moves forward (moves downward in the figure) from the state shown in FIG. As a result, the unlocking portion 380 of the first slide base 44 is separated from the rotating roller 289r of the transmitting portion 285, but the engaging portion 280 of the rotating lock mechanism 80 is held in a locked state by the spring force of the coil spring 280b.
Further, when the first slide base 44 moves forward with respect to the rotation base 35, the four-bar linkage mechanism 51 rotates downward about the support shaft of the first slide base 44 and is placed on the lifting base 55. Then, the seat body 10 is lowered horizontally to the boarding / alighting assist position.
In addition, before the advancement of the sheet body 10 by the second slide mechanism 70 is completed, the first slide mechanism 40 on the rotation base 35 is moved forward to hold the engaging portion 280 of the rotation lock mechanism 80 in the locked state. Although an example is shown, after the advancement of the sheet body 10 by the second slide mechanism 70 is completed, the first slide mechanism 40 is moved forward to hold the engaging portion 280 of the rotation lock mechanism 80 in the locked state. Is possible.

When the seat body 10 is moved from the outside entry / exit assistance position to the indoor seating position, an operation opposite to the above operation is performed.
Here, the locked state of the engaging portion 280 of the rotation lock mechanism 80 is automatically released when the first slide base 44 moves backward from the vicinity of the backward limit position to the backward limit position.
That is, when the first slide base 44 and the unlocking portion 380 are retracted (moved upward in FIG. 10), the inclined vertical wall 382 of the unlocking portion 380 moves the rotating roller 289r of the transmitting portion 285 in the rear direction (upward in the drawing). Press. As a result, the transmission roller 289r moves to the left vertical wall 381 side along the inclined vertical wall 382 while the transmission portion 285 rotates counterclockwise around the connecting pin 286 in FIG. As a result, the transmission pin 285p of the transmission portion 285 presses the straight wall portion 281k of the engagement portion main body 281 and the engagement portion main body 281 resists the spring force of the coil spring 280b and moves to the right from the lock position around the connection pin 282. Rotate. As a result, the receiving pin 184 of the engaged portion 180 moves relative to the opening side of the notch groove 284c along the notch groove 284c of the engaging portion main body 281.
Then, with the transmission unit 285 rotated to the left rotation limit position, the rotation roller 289r of the transmission unit 285 moves from the inclined vertical wall 382 of the unlocking unit 380 toward the left vertical wall 381 as shown in FIG. . In this state, the engagement portion main body 281 is held at the right rotation limit position (unlock position), and the engagement of the engagement portion main body 281 and the engaged portion 180 in the rotation direction of the rotation base 35 is released. . That is, the engaging portion 280 of the rotation lock mechanism 80 is held in the unlocked state. From this state, when the first slide base 44 is further retracted (moved upward in the drawing) to the retreat limit position, the rotation roller 289r of the transmission portion 285 moves forward (lower in the drawing) along the left vertical wall 381 of the unlocking portion 380. The rotation lock mechanism 80 is held in the unlocked state.

<Advantages of vehicle seat S>
According to the present invention, when the seat body 10 is moved from the lateral position to the outside of the passenger compartment when the vehicle gets on and off, that is, when the seat body 10 is in the forward limit position, the rotation lock mechanism 80 provided on the rotation base 35 is The engaging portion 280 is in a locked state and is engaged with an engaged portion 180 provided on the front / rear slide base 21. That is, the rotation lock mechanism 80 is held in a locked state. For this reason, even if the external force in the width direction with respect to the sheet main body 10 is amplified and a large rotational force is applied to the rotation mechanism 30, this is received by the engaging portion 280 and the engaged portion 180. It does not participate in the rotary motor 32m. This can prevent damage to the rotary motor 32m.
Further, the unlocking portion 380 is provided on the first slide base 44 of the first slide mechanism 40, and the engaging portion 280 in the locked state is changed to the unlocked state by the retreating operation with the slide base 44. For this reason, it is not necessary to provide a special actuator for releasing the lock state of the rotation lock mechanism 80.
In addition, a coil spring 280b that biases the engaging portion 280 to a locked state is provided, and the engaging portion 280 is unloaded by the biasing force of the coil spring 280b as the lock releasing portion 380 moves forward together with the first slide base 44. It is configured to switch from the locked state to the locked state. For this reason, even when the unlocking portion 380 and the first slide base 44 are separated from the engaging portion 280, the engaging portion 280 can be held in the locked state.
In addition, the engaging portion 280 includes an engaging portion main body 281 that can be engaged with the engaged portion 180, and a transmission portion 285 that transmits the force received from the lock releasing portion 380 to the engaging portion main body 281. Thus, the degree of freedom of arrangement of the engaging portion main body 281 and the lock releasing portion 380 is improved.

[Embodiment 2]
Hereinafter, based on FIGS. 12-14, the vehicle seat which concerns on Embodiment 2 of this invention is demonstrated. Here, FIG. 12 is a longitudinal sectional view showing the rotation lock mechanism of the vehicle seat, FIG. 13 is a plan view showing the rotation lock mechanism when the seat body is at the seating position facing the vehicle, and FIG. It is a top view showing the rotation lock mechanism when it exists in the horizontal position which faced the door opening part side. In FIG. 13 and FIG. 14, the rotation base 35 is omitted.
The vehicle seat according to the present embodiment is a modification of the engaging portion 280 of the rotation lock mechanism 80 of the vehicle seat S according to the first embodiment, and the other structure is the vehicle seat S according to the first embodiment. It is the same. For this reason, the same number is attached | subjected about the same member as the vehicle seat S which concerns on Embodiment 1, and description is abbreviate | omitted.
As shown in FIGS. 12 and 13, the vehicle seat rotation lock mechanism 400 according to the present embodiment is provided on the engaged portion 180 installed on the front and rear slide base 21 and on the lower side of the rotation base 35. The engagement portion 480 and a lock release portion 380 provided on the rear side of the first slide base 44 of the first slide mechanism 40 are configured.
Note that the engaged portion 180 and the unlocking portion 380 have the same basic structure as the engaged portion 180 and the unlocking portion 380 described in the first embodiment, and a description thereof will be omitted.

<About the engaging portion 480>
The engaging portion 480 includes a fixed member 481 and a movable member 490.
The fixing member 481 is a plate-shaped member configured to be able to come into contact with the outer peripheral surface of the receiving pin 184 of the engaged portion 180 from the rotation direction when the rotation base 35 is rotated to a lateral position facing the door opening side. It is. As shown in FIG. 13, the fixing member 481 includes a horizontal plate portion 482 disposed on an arc E that is concentric with the rotation mechanism 30 and passes through the receiving pin 184 of the engaged portion 180, and a substantially center of the horizontal plate portion 482. And an inclined plate portion 483 that protrudes obliquely inward (rotation center C side) from a flat surface in a substantially y-shape. The center of the connecting portion between the horizontal plate portion 482 and the inclined plate portion 483 is coupled to the lower surface of the rotary base 35 by a fixed vertical axis 484 (see FIG. 12). Further, a base end portion 482m (right end in FIG. 13) of the horizontal plate portion 482 of the fixing member 481 and a tip end portion 483f of the inclined plate portion 483 are fixed to the lower surface of the rotary base 35 by bolts B, respectively. For this reason, the fixing member 481 is held so as not to move relative to the rotation base 35.
An abutting concave surface 482x that abuts the outer peripheral surface of the receiving pin 184 of the engaged portion 180 from the rotational direction when the rotary base 35 rotates to the lateral position is formed at the tip of the horizontal plate portion 482 of the fixing member 481. Has been. Further, a spring receiver 483b that supports one end of a spring 488 described later is formed at the tip of the inclined plate portion 483 of the fixing member 481.

The movable member 490 of the engaging portion 480 is moved from the opposite side of the contact concave surface 482x of the fixed member 481 to the receiving pin 184 of the engaged portion 180 when the rotation base 35 is rotated to a lateral position facing the door opening side. It is a plate-like member that is configured to be rotatable between a locked position where it abuts and an unlocked position separated from the receiving pin 184.
As shown in FIG. 12, the movable member 490 is formed into a substantially L-shaped side surface by a horizontal plate portion 491 and a vertical plate portion 492, and the fixed vertical axis 484 is positioned closer to the center tip of the horizontal plate portion 491. A bearing hole 493 to be passed is formed. The movable member 490 can rotate between a right rotation limit position (lock position (see FIG. 14)) and a left rotation limit position (unlock position (see FIG. 13)) around the fixed vertical axis 484. The lower surface of the rotation base 35 is connected to the lower surface of the fixing member 481.
As shown in FIGS. 13 and 14, the horizontal plate portion 491 of the movable member 490 is disposed along the arc E together with the horizontal plate portion 482 of the fixed member 481. A hook portion 491f is formed so as to protrude outward. A hooking surface 491e of the hook 491f is a contact plane 491e that can contact the receiving pin 184 of the engaged portion 180 from the opposite side of the contact concave surface 482x of the fixing member 481.

A spring receiver 495 is formed at the center position in the longitudinal direction of the horizontal plate portion 491 of the movable member 490 so as to protrude toward the inner peripheral side. Between the spring receiver 495 and the spring receiver 483b of the fixed member 481, a spring 488 urged in a direction (lock position direction) in which the movable member is rotated clockwise in FIGS.
Further, as shown in FIG. 12, the vertical plate portion 492 of the movable member 490 protrudes upward from the rotation base 35, and the protrusion 498 is bent at the upper end of the vertical plate portion 492 inward in the width direction of the rotation base 35. It is formed in the state where it was done. The protrusion 498 has a chevron tip, and the chevron tip surface 498e is configured to contact the left vertical wall 381 and the inclined vertical wall 382 of the unlocking portion 380 provided on the first slide base 44. Has been.

As shown in FIG. 14, when the first slide base 44 moves backward (moves upward in FIG. 14) when the engaging portion 480 is in the locked state, the inclined vertical wall 382 of the unlocking portion 380 is projected from the movable member 490. The part 498 is pressed. As a result, the protrusion 498 of the movable member 490 moves toward the left vertical wall 381 along the inclined vertical wall 382 of the unlocking portion 380, and the movable member 490 moves in the unlock position direction against the force of the spring 488. Turn left. Then, when the protrusion 498 of the movable member 490 reaches the left vertical wall 381 of the unlocking portion 380, the movable member 490 rotates to the left rotation limit position (unlock position) and is movable as shown in FIG. The member 490 is held at the left rotation limit position (unlock position). That is, the hook 491f of the movable member 490 is separated from the receiving pin 184 of the engaged portion 180, and the engaging portion 480 of the rotation lock mechanism 400 is held in the unlocked state.
Further, when the first slide base 44 moves forward (moves leftward in FIG. 13) from the unlocked state shown in FIG. 13 and the projection 498 of the movable member 490 reaches the inclined vertical wall 382 of the unlocking portion 380, the first slide base 44 moves forward. As the slide base 44 and the lock release unit 380 move forward, the movable member 490 rotates rightward in the lock position direction by the force of the spring 488. Then, when the protrusion 498 of the movable member 490 reaches the rear end position of the inclined vertical wall 382 of the unlocking portion 380, the movable member 490 rotates to the right rotation limit position (lock position) as shown in FIG. Then, the receiving pin 184 of the engaged portion 180 is sandwiched from both sides of the rotation base 35 in the rotation direction by the contact flat surface 491e of the hook 491f of the movable member 490 and the contact concave surface 482x of the fixed member 481. Thereby, the engaging part 480 of the rotation lock mechanism 400 is held in a locked state.

<About the operation of the seat body and the operation of the rotation lock mechanism 400>
In the state in which the seat body 10 is in the seating position in the vehicle interior, as shown in FIG. 13, the first slide base 44 of the first slide mechanism 40 is in the retreat limit position, and the engaging portion 480 of the rotation lock mechanism 400 is in the unlocked position. It is held locked. That is, the protrusion 498 of the movable member 490 of the engaging portion 480 is in contact with the left vertical wall 381 of the unlocking portion 380 and is held at the left rotation limit position (unlock position). For this reason, the seat body 10 can be horizontally rotated by about 90 ° to the lateral position facing the door opening D side by the rotation mechanism 30. Then, when the rotation base 35 and the sheet main body 10 are rotated horizontally to the horizontal position by the operation of the rotation mechanism 30, as shown by an imaginary line (two-dot chain line) in FIG. The contact surface 482x contacts the outer peripheral surface of the receiving pin 184 of the engaged portion 180.
Next, in this state, when the first slide mechanism 40 on the rotation base 35 operates and the first slide base 44 and the lock release unit 380 move forward, the engagement unit is moved along the left vertical wall 381 of the lock release unit 380. The protrusion 498 of the movable member 490 of 480 moves relatively backward in the direction of the inclined vertical wall 382. In this state, the movable member 490 is held at the left rotation limit position (unlock position).

When the protrusion 498 of the movable member 490 moves from the left vertical wall 381 to the inclined vertical wall 382 of the unlocking unit 380 as the first slide base 44 and the unlocking unit 380 move forward, the clockwise rotation of the movable member 490 is performed. Permissible. That is, as the first slide base 44 and the lock release unit 380 move forward, the movable member rotates to the right by the force of the spring 488, and the protrusion 498 of the movable member 490 relatively moves backward along the inclined vertical wall 382. As described above, when the movable member 490 rotates to the right, the hook 491f of the movable member 490 turns around to the rear side of the receiving pin 184 of the engaged portion 180 (opposite the contact concave surface 482x of the fixed member 481). I will become As shown in FIG. 14, the contact flat surface 491 e of the hook 491 f of the movable member 490 is in contact with the fixed member 481 in a state where the protrusion 498 of the movable member 490 is relatively retracted to the end of the inclined vertical wall 382. The movable member 490 contacts the receiving pin 184 of the engaged portion 180 from the opposite side to the concave surface 482x, and the movable member 490 is held at the right rotation limit position (lock position). That is, the engaging portion 480 of the rotation lock mechanism 400 is held in a locked state.
Then, when the first slide base 44 moves forward with respect to the rotation base 35, the four-bar linkage mechanism 51 rotates downward about the support shaft of the first slide base 44 and is placed on the lifting base 55. Then, the seat body 10 is lowered horizontally to the boarding / alighting assist position.

When the seat body 10 is moved from the outside entry / exit assistance position to the indoor seating position, an operation opposite to the above operation is performed.
Here, the locked state of the engaging portion 480 of the rotation lock mechanism 400 is automatically released when the first slide base 44 moves backward from the vicinity of the backward limit position to the backward limit position.
That is, when the first slide base 44 and the unlocking portion 380 are retracted (moved upward in FIG. 14), the inclined vertical wall 382 of the unlocking portion 380 presses the protrusion 498 of the movable member 490, and the movable member 490 is a spring. Rotate counterclockwise against the force of 488 in the unlock position direction. Then, as the first slide base 44 and the unlocking portion 380 are retracted, the movable member 490 reaches the left vertical wall 381 at the protruding portion 498 as shown in FIG. 490 is held at the left rotation limit position (unlock position). That is, the hook 491f of the movable member 490 is separated from the receiving pin 184 of the engaged portion 180, and the engaging portion 480 of the rotation lock mechanism 400 is held in the unlocked state. For this reason, after the first slide base 44 is retracted to the retreat limit position, the seat body 10 can be horizontally rotated from the lateral position facing the door opening D side to the seating position facing the vehicle by the rotation mechanism 30. .

<Advantages of the vehicle seat according to this embodiment>
As described above, the engaging portion 480 of the rotation lock mechanism 400 according to the present embodiment is configured to lock the rotation by sandwiching the receiving pin 184 of the engaged portion 180 between the fixed member 481 and the movable member 490. Therefore, the structure of the fixed member 481 and the movable member 490 can be simplified. Furthermore, since only the movable member 490 of the engaging portion 480 is moved by the lock releasing portion 380, the operation of the engaging portion 480 is simplified. For this reason, the cost of the rotation lock mechanism 400 can be reduced.

<Variation example of vehicle seat S>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in the first embodiment, the example in which the engaging portion 280 of the rotation lock mechanism 80 is configured by the engaging portion main body 281 and the transmission portion 285 has been shown, but the engaging portion 280 can also be configured by one member. is there.
In the second embodiment, the contact concave surface 482x of the fixed member 481 and the contact flat surface 491e of the movable member 490 are brought into contact with the outer peripheral surface of the receiving pin 184 of the engaged member 180 in the locked state of the rotation lock mechanism 400. An example is shown. However, when the rotation lock mechanism 400 is in the locked state, the contact concave surfaces 482x and 491e of the fixed member 481 and the movable member 490 are not brought into full contact with the outer peripheral surface of the pin 184, but close enough that both can be regarded as contact. It may be configured to (close).
In the first and second embodiments, the vehicle seat S including the lifting mechanism 50 is illustrated, but the rotation lock mechanisms 80 and 400 according to the present invention can be applied to a vehicle seat that does not include the lifting mechanism 50. . In this case, it is preferable to provide the unlocking portion 380 of the rotation lock mechanisms 80, 400 on the seat base 75 of the second slide mechanism 70, the seat body 10 or the like.
Further, in the first and second embodiments, the example in which the present invention is applied to the vehicle seat S used as a passenger seat has been described, but the present invention can also be applied to a vehicle seat other than the passenger seat.

It is a schematic plan view of a vehicle provided with the vehicle seat which concerns on Embodiment 1 of this invention. It is a model rear view (II arrow line view of FIG. 1) of the said vehicle seat. It is a side view showing operation | movement of the said vehicle seat. It is a side view showing operation | movement of the said vehicle seat. It is a side view showing operation | movement of the said vehicle seat. It is a disassembled perspective view showing the rotation lock mechanism of the said vehicle seat. It is a longitudinal cross-sectional view showing the rotation lock mechanism of the said vehicle seat. It is a top view showing operation | movement of the rotation lock mechanism of the said vehicle seat. It is a top view showing operation | movement of the rotation lock mechanism of the said vehicle seat. It is a top view showing operation | movement of the rotation lock mechanism of the said vehicle seat. It is a top view showing the gear transmission mechanism of the rotation mechanism of the said vehicle seat. It is a longitudinal cross-sectional view showing the rotation lock mechanism of the vehicle seat which concerns on Embodiment 2 of this invention. It is a top view showing operation | movement of the rotation lock mechanism of the said vehicle seat. It is a top view showing operation | movement of the rotation lock mechanism of the said vehicle seat.

Explanation of symbols

F Vehicle floor 10 Seat body 30 Rotating mechanism 35 Rotating base (Rotating part of rotating mechanism)
20 Front / rear slide mechanism 21 Front / rear slide base (rotation support)
40 First slide mechanism (slide mechanism)
44 First slide base (slide part)
70 Second slide mechanism 80 Rotation lock mechanism 180 Rotated part 280 Engaging part 280b Coil spring (biasing means)
281 Engagement unit main body 255 Transmission unit 380 Unlocking unit 400 Rotation lock mechanism 480 Engagement unit 481 Fixed member 482x Contact surface 490 Movable member 491f Hook 491e Contact surface

Claims (4)

A seat main body, a rotation mechanism for horizontally rotating the seat main body between a seating position facing the vehicle forward and a lateral position facing the door opening side; and the seat main body in a state where the seat main body is in the lateral position. A vehicle seat comprising: a slide mechanism that can be moved toward the vehicle interior side or vehicle interior side with respect to the rotation mechanism; and a rotation lock mechanism that restricts a rotation operation of the seat body at the lateral position,
The rotation mechanism includes a rotation support unit that is held in a non-rotatable manner with respect to the vehicle floor, and a rotation unit that is configured to be horizontally rotatable with respect to the rotation support unit and supports the slide mechanism and the seat body. With
The slide mechanism includes a slide portion that is slidable together with the seat body to the outside of the vehicle interior or the interior of the vehicle interior;
The rotation lock mechanism is
An engaged portion provided on the rotation support portion side of the rotation mechanism;
Provided on the rotating part side of the rotating mechanism and configured to be switchable between an unlocked state that does not engage with the engaged part and a locked state that engages with the engaged part at the lateral position. An engaging portion;
It is provided in the slide part of the slide mechanism, and is brought into contact with the engagement part by the movement to the vehicle interior side together with the slide part, and the engagement part in the locked state is changed to the unlocked state. A vehicular seat comprising a lock release portion that continues to contact the engagement portion to a slide completion position and maintains the unlocked state. The vehicle seat according to claim 1,
Urging means for urging the engaging portion to the locked state;
The engagement portion is configured to change from the unlocked state to the locked state by the urging force of the urging means as the unlocking portion moves together with the slide portion to the outside of the passenger compartment. A vehicle seat. A vehicle seat according to claim 1 or 2, wherein
The engagement portion includes an engagement portion main body that can be engaged with the engaged portion, and a transmission portion that transmits a force received from the lock release portion to the engagement portion main body. Vehicle seat. A vehicle seat according to claim 1 or 2, wherein
The engaging portion is composed of a fixed member fixed to the rotating portion of the rotating mechanism and a movable member connected to the rotating portion so as to be movable between a locked position and an unlocked position.
The fixing member is in contact with or close to the engaged portion from the rotating direction in a state where the rotating portion of the rotating mechanism is rotated to the lateral position of the seat body,
The movable member is brought into contact with or close to the engaged portion from the opposite side of the fixed member at the locked position, and is moved to the unlocked position by the unlocking portion to move from the engaged portion. A vehicle seat characterized by being configured to be separated from each other.

Images