JP6776993B2 - Vehicle seat - Google Patents

Description

The present invention relates to a vehicle seat.

As a vehicle seat provided on a vehicle, for example, as disclosed in Patent Document 1, a seat cushion, a seat back, and an armrest are known. In the configuration of Patent Document 1, the seat cushion and the armrest are rotatable between the unfolded position and the retracted position, respectively.

Japanese Patent No. 5685920

In the configuration of Patent Document 1, by rotating the seat cushion from the unfolded position to the retracted position, the armrest is unlocked, and as a result, the armrest rotates to the retracted position. However, there is a need for a configuration that can be more convenient when rotating the seat cushion and armrest from the retracted position to the deployed position.

The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a vehicle seat capable of further increasing convenience.

In order to solve the above problems, the vehicle seat of the present invention has a seat back having a backrest surface, a seating surface, a seat cushion deployment position in which the seating surface faces upward, and the seating surface is the seat cushion. It has a seat cushion that can rotate above the seating surface of the unfolded position and a seat cushion storage position that is rotated toward the seat back side, and a mounting surface, and the previously described mounting surface is upward. An armrest that can be rotated between an armrest deployment position facing the armrest and an armrest storage position in which the previously described mounting surface is above the previously described mounting surface of the armrest deployment position and is rotated toward the seat back side, and the above. The armrest is provided with an interlocking mechanism that rotates the armrest in conjunction with the rotation of the seat cushion, and the armrest has a shape extending from the above-mentioned mounting surface toward the rotation axis of the seat cushion. The rotation axis of the armrest is provided at the extended end of the armrest, and the interlocking mechanism is such that the seat cushion is located between the seat cushion storage position and the seat cushion storage position and the seat cushion deployment position. In the process of rotating to the intermediate position, the armrest is not rotated, and in the process of rotating the seat cushion from the intermediate position to the seat cushion deployment position, the armrest is expanded from the armrest storage position to the armrest deployment position. It is characterized in that it is configured to rotate to a position.

In the above configuration, the armrest has a shape extending toward the rotation axis of the seat cushion, and the rotation axis of the armrest is provided at the extended end of the armrest. As a result, both the rotation axes of the armrest and the seat cushion can be brought closer to each other, and the interlocking mechanism can be made simpler than the configuration in which the rotation axes are largely separated from each other. Further, in the deployed position, the mounting surface is generally arranged at a position higher than the seating surface. For this reason, in a configuration in which both rotation axes of the armrest and the seat cushion are arranged close to each other, if the armrest and the seat back are interlocked by the same rotation angle, the armrest at the armrest storage position is arranged behind the seat back. There is a concern that it may interfere with the members arranged behind the seat back. That is, when both the rotation axes of the armrest and the seat cushion are arranged close to each other, it is more preferable that the rotation angle of the armrest is set to a value smaller than the rotation angle of the seat cushion and interlocked. Here, the interlocking mechanism having the above configuration does not rotate the armrest in the process of rotating the seat cushion from the seat cushion storage position to the intermediate position, but in the process of rotating from the intermediate position to the seat cushion deployment position. It is configured to rotate the armrest. Therefore, while setting the rotation angle of the armrest to a value smaller than the rotation angle of the seat cushion, the armrest can be rotated to the unfolded position in conjunction with the rotation of the seat cushion, further improving convenience. be able to.

Further, the interlocking mechanism includes a locking portion provided on the seat cushion and a locked portion provided on the arm rest, and the seat cushion rotates from the seat cushion storage position to the intermediate position. In the process of moving, the locking portion does not lock on the locked portion, and in the process of rotating the seat cushion from the intermediate position to the seat cushion deployment position, the locking portion is locked. By locking to the portion, the armrest can be rotated from the armrest storage position to the armrest deployment position. The interlocking mechanism can be realized with a relatively simple configuration including a locking portion and a locked portion.

Further, the locking portion is a pin protruding from the seat cushion toward the armrest, and the armrest has the pin when the seat cushion rotates to the seat cushion storage position and the intermediate position. When a slit extending along the rotation locus is formed and the seat cushion is in the seat cushion storage position, the pin is arranged at one end in the extending direction of the slit, and the locked is locked. The portion may be the inner surface of the other end side of the inner surface of the slit in the extending direction of the slit.

According to the above configuration, in the process of rotating the seat cushion from the seat cushion storage position to the intermediate position, the pin moves inside the slit, so that the armrest is not rotated. Then, in the process of rotating the seat cushion from the intermediate position to the seat cushion deployment position, the armrest can be rotated by the pin pressing the inner surface on the other end side in the extending direction of the slit. In the above configuration, it is only necessary to form a slit in the armrest, which is particularly suitable for saving space in the armrest.

Further, the armrest urging member may be provided to urge the armrest toward the armrest storage position side. According to the above configuration, in the process of rotating the seat cushion from the seat cushion storage position to the intermediate position, the armrest may idle because the locking portion is not locked to the locked portion. By urging the armrest to the armrest storage position side, it is possible to suppress the situation in which the armrest floats in the process of rotating the seat cushion from the seat cushion storage position to the intermediate position, and the operation of the armrest can be made more stable. Can be done.

Further, the seat cushion urging member may be provided to urge the seat cushion toward the seat cushion storage position side. When the user leaves the seating surface while the seat cushion is in the deployed position, the seat cushion can be returned to the seat cushion storage position, which can further improve convenience.

Further, the rotation shaft of the seat cushion and the rotation shaft of the armrest can be arranged substantially coaxially. As a result, the rotation shaft of the seat cushion and the rotation shaft of the armrest can be arranged closer to each other, and the interlocking mechanism can be made even simpler.

According to the present invention, it is possible to provide a vehicle seat that can be made more convenient.

A perspective view showing a vehicle seat according to the first embodiment of the present invention. An exploded perspective view showing a vehicle seat An exploded perspective view showing the base frame, cushion frame and armrest frame Side view showing the state where the seat cushion and the armrest are in the retracted positions respectively. Side view showing the seat cushion in the middle position and the armrest in the retracted position Side view showing the state where the seat cushion and the armrest are in the deployed position respectively. A side view showing a state in which the seat cushion and the armrest are in the retracted positions in the vehicle seat according to the second embodiment. 2 is a side view showing a state in which the seat cushion is in the middle position and the armrest is in the retracted position in the second embodiment. Side view showing a state in which the seat cushion and the armrest are each in the deployed position in the second embodiment. The figure which shows the positioning plate provided with the vehicle seat which concerns on Embodiment 2.

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 6. The vehicle seat 10 of the present embodiment is a seat mounted on a vehicle such as a bus, and as shown in FIGS. 1 and 4, a seat back 30 having a base frame 20 and a backrest surface 30A (see FIG. 4). ), A seat cushion 40 having a seating surface 40A, an armrest 60 having a mounting surface 60A for a seater to mount an arm, and a fixing member 70 interposed between the armrest 60 and the base frame 20. To be equipped. The base frame 20 is attached to the wall surface 11 of the bus (see FIG. 4) on the back surface thereof. The base frame 20 is made of metal, for example, and has a U-shape that is opened upward in a front view. The X-axis, Y-axis and Z-axis are shown in each drawing. The X-axis is the vehicle front-rear direction (corresponding to the width direction of the vehicle seat 10), the Y-axis is the vehicle width direction (corresponding to the front-rear direction of the vehicle seat 10), and the Z-axis is the vehicle up-down direction.

As shown in FIG. 3, the seat cushion 40 includes a metal cushion frame 41. The cushion frame 41 has a pipe frame 49A forming the outer skeleton of the seat cushion 40, a pair of side plates 43 and 43, a pair of side arms 42 and 42, and a panel 48. Further, the seat cushion 40 includes a soft material (not shown) that covers the cushion frame 41 and a skin material 40B (see FIG. 2) that covers the soft material. The pair of side plates 43, 43 are fixed to both side wall portions of the base frame 20 from the outside in the seat width direction, respectively. The side arm 42 is rotatable with respect to the side plate 43 and is attached from the inside in the seat width direction. As a result, the seat cushion 40 is configured to be rotatable between the storage position shown in FIG. 4 and the unfolding position shown in FIG.

As shown in FIG. 3, a spiral spring 44 (seat cushion urging member) is attached to the side plate 43, and one end of the spring 44 is locked to a bracket 42A provided on the side arm 42. .. As a result, the seat cushion 40 is rotationally urged toward the storage position side. Further, a lock mechanism 49 for fixing the seat cushion 40 at the retracted position is provided between the side arm 42 and the side plate 43. As such a locking mechanism, for example, a round reclining can be used, but the locking mechanism is not limited to this. Specifically, the side plate 43 is fixed to the outer surface of the round reclining in the seat width direction, while the side arm 42 is fixed to the inner surface of the round reclining in the seat width direction so that the side arm 42 becomes a side plate. It is rotatable with respect to 43. As shown in FIG. 1, the seat cushion 40 includes a lever 45. The lever 45 is provided on the surface opposite to the seating surface 40A, and is exposed to the vehicle interior side at the retracted position. A wire 46 built in the seat cushion 40 is connected to the lever 45. By pulling up the lever 45, the lock mechanism 49 is operated via the wire 46, and the lock mechanism 49 unlocks the seat cushion 40.

The fixing member 70 is attached to one side end of the base frame 20. As shown in FIG. 4, the fixing member 70 is a projecting portion 73 whose central portion in the vertical direction projects toward the vehicle interior side. The right side of the wall surface 11 in FIG. 4 is the vehicle interior side, and the left side of the wall surface 11 is the vehicle interior side. As shown in FIGS. 2 and 3, the armrest 60 includes an armrest frame 61 and an armrest cover 62. As shown in FIG. 3, the armrest frame 61 has a pair of plates 61A and 61B that follow the outer shape of the armrest 60. The pair of plates 61A and 61B are arranged so as to sandwich the protrusion 73 of the fixing member 70 described above, and are rotatably attached to the protrusion 73 via a hinge pin 65 (see FIG. 4). There is.

As a result, the armrest 60 is configured to be rotatable between the storage position shown in FIGS. 4 and 5 and the deployment position shown in FIG. As shown in FIG. 1, most of the fixing member 70 (the portion not covered by the armrest cover 62) is covered by being sandwiched between the pair of resin covers 71 and 72. In the following description, the storage position of the seat cushion 40 may be referred to as the seat cushion storage position, and the storage position of the armrest 60 may be referred to as the armrest storage position to distinguish them. Further, the unfolded position of the seat cushion 40 may be referred to as a seat cushion unfolded position, and the unfolded position of the armrest 60 may be referred to as an armrest unfolded position to distinguish them.

As shown in FIG. 4, the seat back 30 has a backrest surface 30A. The backrest surface 30A is a surface extending along the vertical direction as a whole, and the lower portion thereof is a curved surface slightly bulging toward the vehicle interior side with respect to the upper portion. Like the seat cushion 40, the seat back 30 is composed of a metal frame (not shown), a soft material covering the frame (not shown), and a skin material covering the soft material. In FIG. 4, the outer shape of the seat back 30 is shown by a two-dot chain line.

As described above, the seat cushion 40 has a configuration that is rotatable between the seat cushion storage position shown in FIG. 4 and the seat cushion deployment position shown in FIG. Specifically, as shown in FIG. 4, the seat cushion 40 at the seat cushion storage position is arranged in a posture extending in the vertical direction, and the seating surface 40A is arranged to face the backrest surface 30A. The seating surface 40A is a concave curved surface that follows the curved surface shape of the backrest surface 30A, and the seat cushion 40 at the seat cushion storage position is configured to be fitted with the seat back 30. As shown in FIG. 6, the seat cushion 40 at the seat cushion deployment position has a shape protruding from the fixing member 70 toward the vehicle interior side, and the seating surface 40A is arranged so as to face upward. The seating surface 40A at the seat cushion storage position is rotated around the rotation shaft L1 (see FIG. 4) above the seating surface 40A at the seat cushion deployment position and toward the seat back 30.

As described above, the armrest 60 is configured to be rotatable between the armrest storage position shown in FIGS. 4 and 5 and the armrest deployment position shown in FIG. The armrest 60 includes a first extension portion 66 extending from the fixing member 70 and a second extension portion 67 extending from the tip of the first extension portion 66. The first extension portion 66 is arranged in a posture extending upward from the fixing member 70 at the armrest storage position. The second extension portion 67 is arranged in a posture in which it extends toward the vehicle interior side as it goes upward at the armrest storage position. In the present embodiment, the vehicle interior side corresponds to the direction away from the seat back 30, and the vehicle interior outside corresponds to the direction closer to the seat back 30. The mounting surface 60A is provided on the second extension portion 67, and at the armrest storage position, the mounting surface 60A becomes an inclined surface that inclines downward toward the seat back 30.

In the armrest deployment position, the first extension portion 66 extends in an ascending and inclined manner toward the vehicle interior side, and the second extension portion 67 extends in a substantially horizontal direction to the extent that the seated person can rest his arm. It becomes a posture that extends in shape. Therefore, in the armrest deployment position, the mounting surface 60A is a surface facing upward. The mounting surface 60A at the armrest storage position is rotated around the rotation shaft L1 (see FIG. 4) above the mounting surface 60A at the armrest deployment position and toward the seat back 30. In the present embodiment, the rotation shaft of the seat cushion 40 and the rotation shaft of the armrest 60 are arranged so as to be arranged along the horizontal direction. More specifically, the rotation shaft of the seat cushion 40 and the rotation shaft of the armrest 60 are arranged coaxially. The rotation axis of the seat cushion 40 and the rotation axis of the armrest 60 are shown by L1 in each figure (see FIGS. 1, 4 to 6). That is, the armrest 60 has a shape extending from the mounting surface 60A toward the rotation shaft L1 of the seat cushion 40, and the rotation shaft L1 of the armrest 60 is provided at the extended end portion of the armrest 60. .. The rotation angle of the armrest 60 between the armrest storage position and the armrest deployment position is, for example, about 35 degrees. The rotation angle of the seat cushion 40 between the seat cushion storage position and the seat cushion deployment position is, for example, about 90 degrees. That is, the rotation angle of the armrest 60 is set to a value smaller than the rotation angle of the seat cushion 40. The rotation angle of the seat cushion 40 and the rotation angle of the armrest 60 are not limited to the above-mentioned angles and can be changed as appropriate, and the rotation angle of the armrest 60 may be smaller than the rotation angle of the seat cushion 40. Just do it. Further, as shown in FIG. 6, the mounting surface 60A at the armrest deployment position is arranged at a position higher than the seating surface 40A at the seat cushion deployment position.

One end of a spring 63 (armrest urging member) is fixed to the lower end of the armrest frame 61. The other end of the spring 63 is fixed to a bracket 21 provided on the base frame 20. As a result, the armrest 60 is rotationally urged toward the armrest storage position side by the spring 63. Further, a slit 73A is formed on the upper surface of the protruding portion 73. A positioning pin 68 included in the armrest 60 is fitted in the slit 73A.

The slit 73A is opened upward and extends along the rotation locus of the armrest 60. At the armrest retracted position, the positioning pin 68 comes into contact with the inner surface of the slit 73A on the outside of the vehicle interior, so that the armrest 60 is restricted from rotating toward the seat back 30. At the armrest deployment position, the positioning pin 68 comes into contact with the inner surface of the slit 73A on the vehicle interior side, so that the armrest 60 is restricted from rotating toward the seat cushion 40 side.

The vehicle seat 10 of the present embodiment includes an interlocking mechanism 50 that rotates the armrest 60 in conjunction with the rotation of the seat cushion 40. The interlocking mechanism 50 includes a pin 47 provided on the side arm 42 of the seat cushion 40 and a slit 64 formed at the lower end of the armrest frame 61 (more specifically, the plate 61A). As shown in FIG. 4, the slit 64 has an arc shape along the rotation locus of the pin 47 about the rotation shaft L1. As shown in FIG. 2, the pin 47 projects from the side arm 42 toward the armrest 60 side, and is fitted into the slit 64 as shown in FIG. The pin 47 is arranged below the rotation shaft L1 at the seat cushion storage position.

Next, the operation of the interlocking mechanism 50 will be described with reference to FIGS. 4 to 6. As shown in FIG. 4, when the seat cushion 40 and the armrest 60 are in the retracted positions, the pin 47 is an end portion on the vehicle interior side in the extension direction of the slit 64 (one end portion in the extension direction of the slit). It is arranged in. When the seat cushion 40 is rotated toward the seat cushion deployment position (clockwise in FIG. 4) from this state, the pin 47 rotates clockwise while moving in the slit 64. As shown in FIG. 5, when the seat cushion 40 rotates to an intermediate position between the seat cushion storage position and the seat cushion deployment position, the pin 47 (locking portion) is located on the inner surface 64A on the outside of the vehicle interior in the slit 64. (Locked portion, hole edge portion of slit 64 in armrest frame 61). The rotation angle of the seat cushion 40 from the seat cushion storage position to the intermediate position is the rotation angle of the seat cushion 40 between the seat cushion storage position and the seat cushion deployment position, and the armrest storage position and the armrest deployment position. It is the same as the difference in the rotation angle of the armrest 60 between.

The slit 64 extends along the rotation locus of the pin 47 when the seat cushion 40 rotates to the seat cushion storage position and the intermediate position. Therefore, in the process of rotating the seat cushion 40 from the seat cushion storage position to the intermediate position, the pin 47 does not lock on the inner surface 64A and does not rotate the armrest 60. Then, in the process of rotating the seat cushion 40 from the intermediate position to the seat cushion deployment position, the armrest 60 pressed by the pin 47 is clocked as a result of the rotation of the pin 47 with the pin 47 locked to the inner surface 64A. Rotating around, the armrest 60 rotates from the armrest storage position to the armrest deployment position. As a result, as shown in FIG. 6, the seat cushion 40 and the armrest 60 are arranged at the deployed positions, respectively.

Next, the effect of this embodiment will be described. In the above configuration, the rotation shaft of the seat cushion 40 and the rotation shaft of the armrest 60 are arranged coaxially (in a form of being arranged along the horizontal direction). As a result, the interlocking mechanism can be made simpler than the configuration in which the two rotating shafts are largely separated from each other. For example, in a configuration in which both rotating shafts are arranged non-coaxially and are largely separated from each other, a power transmission means such as a link, a wire, or a gear is required to link the seat cushion 40 and the armrest 60. However, if both rotating shafts are substantially coaxial, the interlocking mechanism can be realized with a simple configuration without using such a power transmission means.

Further, since the mounting surface 60A is arranged at a position higher than the seating surface 40A in the deployed position, when both rotation axes are coaxial, the rotation angle of the armrest 60 is changed to the rotation of the seat cushion 40. It is necessary to set the angle smaller than the angle. This is because if the rotation angle of the armrest 60 is set to the same value (about 90 degrees) as the rotation angle of the seat cushion 40, the armrest 60 at the armrest storage position is arranged behind the seat back 30. This is because the armrest 60 interferes with the wall surface 11. Here, the interlocking mechanism 50 does not rotate the armrest 60 in the process of rotating the seat cushion 40 from the seat cushion storage position to the intermediate position, but in the process of rotating from the intermediate position to the seat cushion deployment position, the armrest 50 It is configured to rotate 60. Therefore, while setting the rotation angle of the armrest 60 to a value smaller than the rotation angle of the seat cushion 40, the armrest 60 can be rotated to the unfolded position in conjunction with the rotation of the seat cushion 40, which is convenient. Can be higher.

Further, the interlocking mechanism 50 includes a pin 47 provided on the seat cushion 40 and an inner surface 64A of the slit 64 provided on the armrest 60, and the seat cushion 40 rotates from the seat cushion storage position to an intermediate position. In the process, the pin 47 does not lock on the inner surface 64A of the slit 64, and in the process in which the seat cushion 40 rotates from the intermediate position to the seat cushion deployment position, the pin 47 locks on the inner surface 64A of the slit 64. The armrest 60 is configured to rotate from the armrest storage position to the armrest deployment position. The interlocking mechanism 50 can be realized with a simple configuration including a pin 47 and a slit 64. Further, in the present embodiment, since it is only necessary to form a slit 64 in the armrest 60, it is particularly suitable for saving space in the armrest 60.

Further, a spring 63 for urging the armrest 60 toward the armrest storage position side is provided. According to the above configuration, in the process of rotating the seat cushion 40 from the seat cushion storage position to the intermediate position, the armrest 60 may idle because the pin 47 is not locked to the inner surface 64A of the slit 64. .. By urging the armrest 60 toward the armrest storage position side, it is possible to suppress a situation in which the armrest 60 is idle in the process of rotating the seat cushion 40 from the seat cushion storage position to an intermediate position, and the operation of the armrest 60 can be suppressed. It can be more stable.

Further, a spring 44 for urging the seat cushion 40 toward the seat cushion storage position side is provided. When the user leaves the seating surface 40A in the seat cushion deployment position, the seat cushion 40 can be returned to the seat cushion storage position, and the convenience can be further improved.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIGS. 7 to 10. In this embodiment, the configuration of the interlocking mechanism is different from that of the above embodiment. The same parts as those in the above embodiment are designated by the same reference numerals, and duplicate description will be omitted. In the vehicle seat 110 of the present embodiment, a substantially triangular plate 161 is provided at the base end portion of the seat cushion 140. Further, a bracket 162 is provided at the base end portion of the armrest 160, and a pin 147 is provided on the bracket 162. The interlocking mechanism 150 of the present embodiment is composed of a plate 161 and a pin 147. A slit 164 is formed in the plate 161, and the slit 164 has an arc shape centered on the rotation shaft L1. The pin 147 is fitted in the slit 164. Further, the armrest 160 is arranged in a posture extending in the vertical direction at the armrest storage position shown in FIG. 7, and the upper surface thereof is a mounting surface 160A. The mounting surface 160A is an inclined surface that inclines downward toward the seat back 130. At the armrest deployment position shown in FIG. 9, the mounting surface 160A is configured to face upward.

Next, the operation of the interlocking mechanism 150 will be described with reference to FIGS. 7 to 9. As shown in FIG. 7, when the seat cushion 40 and the armrest 160 are in the retracted positions, the pin 147 is arranged at the outer end of the vehicle interior in the slit 164. When the seat cushion 40 is rotated toward the seat cushion deployment position (clockwise in FIG. 7) from this state, the plate 161 and thus the slit 164 are rotated. As a result, the pin 147 is slit at the intermediate position shown in FIG. It is arranged at the end on the vehicle interior side in 164. When the seat cushion 40 is further rotated clockwise from this state, the inner surface 164A (locking portion) of the slit 164 is locked to the pin 147 (locked portion), so that the armrest 160 rotates clockwise. Then, the armrest 160 rotates from the armrest storage position to the armrest deployment position. As a result, as shown in FIG. 9, the seat cushion 140 and the armrest 160 are arranged at the deployed positions, respectively.

Further, in the present embodiment, as shown in FIG. 10, the positioning plate 170 is arranged so as to overlap the plate 161. The positioning plate 170 is non-rotatably fixed to, for example, the fixing member 70 (see FIG. 4), and does not rotate with the rotation of the seat cushion 140. The positioning plate 170 is formed with an arc-shaped slit 171 centered on the rotation shaft L1. At the armrest storage position, the pin 147 is inserted into both the end portion of the slit 164 on the outside of the passenger compartment and the end of the slit 171 on the passenger compartment side. Therefore, at the armrest retracted position, the pin 147 abuts on the inner surface of the slit 171 on the outside of the vehicle interior, so that the armrest 160 is restricted from rotating toward the seat back 130.

Further, in the process of rotating the armrest 160 from the armrest storage position to the armrest deployment position, the pin 147 moves in the slit 171. As a result, at the armrest deployment position, the pin 147 abuts on the inner surface of the slit 171 outside the vehicle interior, so that the armrest 160 is restricted from rotating toward the seat cushion 140. In FIG. 10, reference numeral 147A is attached to the pin 147 at the armrest deployment position.

<Other embodiments>
The present invention is not limited to the embodiments described in the above description and drawings, and for example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the bus is illustrated as a vehicle on which a vehicle seat is mounted, but an automobile other than the bus may be used. In addition, the above vehicle seats may also be applied to trains and amusement vehicles as ground vehicles, airplanes and helicopters as flight vehicles, and ships and submersibles as marine and underwater vehicles. it can.
(2) In the above embodiment, as the interlocking mechanism, a mechanism composed of a pin and a slit is illustrated, but the present invention is not limited to this. For example, the seat cushion and the armrest may be interlocked with each other by a gear or a link mechanism.
(3) In the above embodiment, the configuration in which the rotation shaft of the seat cushion 40 and the rotation shaft of the armrest 60 are arranged coaxially is illustrated, but the rotation shaft of the seat cushion 40 and the rotation shaft of the armrest 60 are illustrated. May be substantially coaxial, and for example, the rotation axis of the seat cushion 40 and the rotation axis of the armrest 60 may be slightly displaced in the vertical direction.
(4) In the above embodiment, the configuration in which the fixing member 70 and the armrest 60 are attached to one side end of the base frame 20 has been illustrated, but the present invention is not limited thereto. The fixing member 70 and the armrest 60 may be attached to both side ends of the base frame 20, respectively.

10 ... Vehicle seat, 30, 130 ... Seat back, 30A ... Backrest surface, 40 ... Seat cushion, 40A ... Seating surface, 44 ... Spring (seat cushion urging member), 47 ... Pin (locking part), 50, 150 ... interlocking mechanism, 60, 160 ... armrest, 60A, 160A ... mounting surface, 63 ... spring (armrest urging member), 64A ... slit inner surface (locked part), 147 ... pin (locked part) 164A ... Inner surface of slit (locking part)

Claims (6)

A seat back with a backrest and
A seat cushion retractable position having a seating surface and having the seating surface facing upward, and a seat cushion storage in which the seating surface is rotated upward with respect to the seating surface at the seat cushion deployment position and toward the seat back side. A seat cushion that can rotate between positions and
An armrest that has a mounting surface and has an armrest deployment position in which the front mounting surface faces upward, and an armrest in which the front mounting surface is rotated upward and toward the seat back side with respect to the front mounting surface of the armrest deployment position. An armrest that can rotate between the storage position and
It is provided with an interlocking mechanism that rotates the armrest in conjunction with the rotation of the seat cushion.
The armrest has a shape extending from the above-mentioned mounting surface toward the rotation axis of the seat cushion.
The rotation shaft of the armrest is provided at the extended end of the armrest.
The interlocking mechanism
In the process of rotating the seat cushion from the seat cushion storage position to an intermediate position between the seat cushion storage position and the seat cushion deployment position, the armrest is not rotated.
A vehicle seat having a configuration in which the armrest is rotated from the armrest storage position to the armrest deployment position in the process of rotating the seat cushion from the intermediate position to the seat cushion deployment position. The interlocking mechanism
The locking portion provided on the seat cushion and
A locked portion provided on the armrest is provided.
In the process in which the seat cushion rotates from the seat cushion storage position to the intermediate position, the locking portion does not lock on the locked portion.
In the process of rotating the seat cushion from the intermediate position to the seat cushion deployment position, the locking portion is locked to the locked portion, so that the armrest is displaced from the armrest storage position to the armrest deployment position. The vehicle seat according to claim 1, which is configured to be rotated around. The locking portion is a pin protruding from the seat cushion toward the armrest.
The armrest is formed with a slit extending along the rotation locus of the pin when the seat cushion rotates to the seat cushion storage position and the intermediate position.
In the state where the seat cushion is in the seat cushion storage position, the pin is arranged at one end in the extending direction of the slit.
The vehicle seat according to claim 2, wherein the locked portion is an inner surface of the inner surface of the slit on the other end side in the extending direction of the slit. The vehicle seat according to any one of claims 2 or 3, further comprising an armrest urging member that urges the armrest to the armrest storage position side. The vehicle seat according to any one of claims 1 to 4, further comprising a seat cushion urging member that urges the seat cushion toward the seat cushion storage position side. The vehicle seat according to any one of claims 1 to 5, wherein the rotating shaft of the seat cushion and the rotating shaft of the armrest are arranged substantially coaxially.

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