Vehicular seat

Abstract

To provide a vehicular seat that can improve usability for a crew member of an armrest rotatably connected to a seat back and of a table rotatably connected to the armrest.SOLUTION: A vehicular seat includes: an armrest connected to a seat back 17 rotatably between a front end position and a rear end position around a first rotation shaft 52; a table 84 connected to the armrest rotatably between a folding position and a use position around a second rotation shaft 83; and an interlock mechanism for interlocking the armrest with the table so that the table is positioned at the folding position when the armrest is positioned at the rear end position, and the table is positioned at the use position when the armrest is positioned at the front end position.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a vehicle seat.

Background Art

[0002] Patent Document 1 below discloses a vehicle seat including a seat back connected to a seat cushion, an armrest (handrail member) rotatably connected to the seat back about a rotation axis extending in the left - right direction of the seat, and a table rotatably provided on the armrest.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Regarding the usability of the armrest rotatably connected to the seat back and the table rotatably connected to the armrest in the vehicle seat of Patent Document 1 above, there is room for improvement.

[0005] In consideration of the above facts, an object of the present invention is to obtain a vehicle seat that can improve the usability for passengers of an armrest rotatably connected to a seat back and a table rotatably connected to the armrest.

Means for Solving the Problems

[0006] The vehicle seat according to the invention described in claim 1 comprises an armrest rotatably connected between a front end position and a rear end position behind the front end position about a first rotation axis extending in the left-right direction of the seat on the seat back, a table rotatably connected to the armrest between a folded position and a use position in front of the folded position about a second rotation axis extending in the left-right direction of the seat, and an interlocking mechanism for interlocking the armrest and the table so that the table is positioned at the folded position when the armrest is at the rear end position and the table is positioned at the use position when the armrest is at the front end position.

[0007] The interlocking mechanism of the vehicle seat according to claim 1 interlocks the armrest and the table so that the table is positioned at the folded position when the armrest is at the rear end position and the table is positioned at the use position when the armrest is at the front end position. Since the table is positioned at the folded position when the armrest is at the rear end position in this way, it is easy for the occupant to rotate the armrest at the rear end position toward the front end position side. Further, when the armrest moves to the front end position, the table is positioned at the use position. That is, the occupant can position the table at the use position by rotating the armrest to the front end position without adjusting the rotational position of the table by hand. Therefore, the vehicle seat according to claim 1 can improve the usability for the occupant of the armrest rotatably connected to the seat back and the table rotatably connected to the armrest.

[0008] The vehicle seat according to the invention described in claim 2 is the vehicle seat according to claim 1, and further comprises an interlocking release mechanism for releasing the interlocking between the armrest and the table by the interlocking mechanism and positioning the table at the use position when the armrest rotates between the front end position and an intermediate position between the front end position and the rear end position.

[0009] The interlocking release mechanism of the vehicle seat according to claim 2 positions the table at the use position when the armrest rotates between the front end position and the intermediate position.

[0010] The vehicle seat according to the invention described in claim 3 is the vehicle seat described in claim 2, wherein when the armrest rotates between the rear end position and the intermediate position, relative rotation with respect to the seat back is restricted, and when the armrest rotates between the intermediate position and the front end position, it is provided with a rotating member that rotates relative to the seat back about the first rotation axis. The interlocking mechanism links the table and the rotating member, and when the armrest is located at the rear end position, positions the table at the folding position, and when the armrest moves from the rear end position to the intermediate position, is provided with a linking member having flexibility to position the table at the use position.

[0011] In the vehicle seat according to claim 3, the interlocking release mechanism and the interlocking mechanism are realized with a simple configuration.

[0012] The vehicle seat according to the invention described in claim 4 is the vehicle seat described in claim 3, wherein the interlocking release mechanism includes a bracket fixed to the seat back and having an arc-shaped hole centered on the first rotation axis, and supports the rotating member so as to be rotatable about the first rotation axis, and a guided member provided on the rotating member so as to be relatively movable in the arc-shaped hole when the armrest rotates between the front end position and the intermediate position, and to which the linking member is connected.

[0013] In the vehicle seat according to claim 4, the interlocking release mechanism is realized with a simple configuration.

[0014] The vehicle seat according to the invention described in claim 5 is the vehicle seat according to any one of claims 2 to 4, wherein when the armrest rotates from the intermediate position to the rear end position, the table rotates from the use position to the folding position using its own weight.

[0015] In the vehicle seat according to claim 5, a mechanism for rotating the table from the use position to the folding position becomes unnecessary.

Advantages of the Invention

[0016] As described above, the vehicle seat according to the present invention can improve the usability for the occupant of the armrest rotatably connected to the seat back and the table rotatably connected to the armrest.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0018] Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to the accompanying drawings. In each figure, an arrow FR appropriately shown indicates the front direction in the vehicle front-rear direction (seat front-rear direction), an arrow UP indicates the upward direction in the vehicle up-down direction (seat up-down direction), and an arrow LH indicates the left side in the vehicle left-right direction (seat left-right direction). Hereinafter, when simply using the front-rear, left-right, and up-down directions for explanation, the front and rear in the seat front-rear direction, the left and right in the seat left-right direction (vehicle width direction), and the up and down in the seat up-down direction are indicated.

[0019] As shown in FIG. 1, a vehicle seat 15 is provided on the floor surface 12 of the vehicle cabin. The vehicle seat 15 includes a seat cushion 16 supported by a slide rail (not shown) provided on the floor surface 12, and a seat back 17 whose lower end is rotatably connected to the rear end portion of the seat cushion 16 around a rotation axis extending in the seat left-right direction via a reclining mechanism (not shown). And a headrest 18 provided at the upper end portion of the seat back 17.

[0020] Furthermore, the vehicle seat 15 has a rotation support mechanism 20, an armrest 80, and a table 84.

[0021] A rotation support mechanism 20 is provided on the left side surface of the seat back 17. As shown in FIGS. 4 to 7, the rotation support mechanism 20 includes a first bracket (bracket) 22, a second bracket (bracket) 32, a first rotation shaft 52, a rotating member 54, a first moving member (guided member) 60, a wire connection member (guided member) 63, a second moving member 65, a guide member 68, a linking wire (linking member) 72, a pressing member 85, and a rotating member pressing body 87.

[0022] The first bracket 22 is a flat plate made of metal. The first bracket 22 is formed with a center hole 23, a first arc hole 24, a second arc hole 25, a positioning hole 26, a first locking hole 27, and a second locking hole 28. The center hole 23 is circular. The first arc hole 24 and the second arc hole 25 are arc shapes centered on the center hole 23. The positioning hole 26, the first locking hole 27, and the second locking hole 28 are circular.

[0023] As shown in FIG. 5, a metal first spring member 29 and a second spring member 30 are fixed to the right side surface of the first bracket 22. The first spring member 29 includes a fixing portion 29A and a substantially arc-shaped stopper portion 29B having both end portions connected to the fixing portion 29A. The second spring member 30 includes a fixing portion 30A and a substantially arc-shaped stopper portion 30B having both end portions connected to the fixing portion 30A. The fixing portion 29A is fixed to a portion on the outer peripheral side of the first arc hole 24 on the right side surface of the first bracket 22, and the fixing portion 30A is fixed to a portion on the inner peripheral side of the first arc hole 24 on the right side surface of the first bracket 22. Both the stopper portion 29B and the stopper portion 30B are elastically deformable. The stopper portion 29B and the stopper portion 30B are located on the right side of the lower end portion of the first arc hole 24.

[0024] The second bracket 32 is an integrally molded resin product. The second bracket 32 includes a substantially flat substrate portion 33 and an outer peripheral flange 34 provided on the outer peripheral portion of the right side surface of the substrate portion 33. The height (left - right dimension) of the outer peripheral flange 34 is substantially the same as the thickness (left - right dimension) of the first bracket 22. A central hole 35, a first arc hole 37, and a second arc hole 38 are formed in the substrate portion 33. The central hole 35 is circular. The first arc hole 37 and the second arc hole 38 are arc-shaped with the central hole 35 as the center. On the right side surface of the substrate portion 33, a first annular wall 39 constituting the outer peripheral edge portion of the first arc hole 37 and a second annular wall 40 constituting the outer peripheral edge portion of the second arc hole 38 are provided. On the right side surface of the substrate portion 33, a positioning projection 43, a first locking portion 44, and a second locking portion 47 are provided. The positioning projection 43 is substantially cylindrical. The first locking portion 44 includes a pair of elastically deformable elastic deformation portions in a direction approaching each other and a pair of claw portions 46 provided on the outer peripheral portions of the tip ends of the respective elastic deformation portions. The second locking portion 47 includes a pair of elastically deformable elastic deformation portions in a direction approaching each other and a pair of claw portions 49 provided on the outer peripheral portions of the tip ends of the respective elastic deformation portions.

[0025] As shown in FIG. 5, the left side surface of the first bracket 22 is brought into contact with the right side surface of the substrate portion 33 of the second bracket 32, and the first bracket 22 is positioned on the inner peripheral side of the outer peripheral flange 34. As a result, the central hole 23 and the central hole 35 are coaxial, the first annular wall 39 is inserted into the first arc hole 24, and the second annular wall 40 is inserted into the second arc hole 25. Further, the positioning projection 43 is inserted into the positioning hole 26. Further, while each elastic deformation portion of the first locking portion 44 is elastically deformed in a direction approaching each other, it penetrates the first locking hole 27 to the right side, and after penetration, each elastic deformation portion returns to a free state, so that each claw portion 46 engages with the right side surface of the first bracket 22. Further, while each elastic deformation portion of the second locking portion 47 is elastically deformed in a direction approaching each other, it penetrates the second locking hole 28 to the right side, and after penetration, each elastic deformation portion returns to a free state, so that each claw portion 49 engages with the right side surface of the first bracket 22. Therefore, the first bracket 22 and the second bracket 32 are fixed to each other. Further, the integrated body of the first bracket 22 and the second bracket 32 is fixed to the left side portion of the seat back 17.

[0026] The right end portion of the first rotating shaft 52 extending in the left-right direction is inserted into the central hole 23 of the first bracket 22 and the central hole 35 of the second bracket 32, and the right end portion of the first rotating shaft 52 is fixed to a bracket (not shown) provided on the metal frame of the seat back 17. Further, the first bracket 22 and the second bracket 32 are provided with a shaft lock (not shown) protruding toward the left side.

[0027] As shown in FIG. 6, the metal rotating member 54 is positioned on the left side of the second bracket 32. A circular central hole 55 is provided in the central portion of the rotating member 54. Further, the rotating member 54 is provided with a first mounting hole 56 and a second mounting hole 57. Further, a pressed projection 58 is provided on the outer peripheral portion of the rotating member 54. The central hole 55 of the rotating member 54 is rotatably supported by the first rotating shaft 52. Therefore, the rotating member 54 is relatively rotatable with respect to the first bracket 22 and the second bracket 32 around the first rotating shaft 52.

[0028] The first moving member 60 has a circular head 61 and a shaft portion 62 protruding leftward from the head 61. The head 61 is located on the right side of the first bracket 22, and the shaft portion 62 penetrates the first arc-shaped hole 24 and the first arc-shaped hole 37 to the left. The diameter of the head 61 is larger than the width of the first arc-shaped hole 24. Further, the shaft portion 62 penetrates the through-hole 63A of the wire connection member 63 in a relatively rotatable manner. A caulking portion 63B is provided at the end of the wire connection member 63. Further, the left end portion of the shaft portion 62 is press-fitted into the first mounting hole 56 of the rotating member 54. Note that a male thread may be formed at the left end portion of the shaft portion 62, and this male thread may be screwed into a nut (not shown) fixed to the left side surface of the rotating member 54 to fix the shaft portion 62 to the rotating member 54.

[0029] The second moving member 65 has a circular head 66 and a shaft portion 67 protruding leftward from the head 66. The head 66 is located on the right side of the first bracket 22, and the shaft portion 67 penetrates the second arc-shaped hole 25 and the second arc-shaped hole 38 to the left. The diameter of the head 66 is larger than the width of the second arc-shaped hole 25. Further, the shaft portion 67 penetrates the support hole 68A of the guide member 68 in a relatively rotatable manner. A guide hole 68B, which is a through-hole extending in a direction orthogonal to the radial direction centered on the support hole 68A in a side view, is provided at the end of the guide member 68. Further, the left end portion of the shaft portion 67 is press-fitted into the second mounting hole 57 of the rotating member 54. Note that a male thread may be formed at the left end portion of the shaft portion 67, and this male thread may be screwed into a nut (not shown) fixed to the left side surface of the rotating member 54 to fix the shaft portion 67 to the rotating member 54.

[0030] The shaft portion 62 of the first moving member 60 integrated with the rotating member 54 is inserted into the first arc-shaped holes 24 and 37 so as to be relatively movable, and the shaft portion 67 of the second moving member 65 integrated with the rotating member 54 is inserted into the second arc-shaped holes 25 and 38 so as to be relatively movable. Therefore, the rotating member 54 can rotate relative to the first bracket 22 and the second bracket 32 within a rotation range between a first position (see FIG. 8) where the shaft portion 62 is located at the lower end portions of the first arc-shaped holes 24 and 37 and the shaft portion 67 is located at the rear end portions of the second arc-shaped holes 25 and 38, and a second position (see FIG. 10) where the shaft portion 62 is located in the vicinity of the upper ends of the first arc-shaped holes 24 and 37 and the shaft portion 67 is located in the vicinity of the front ends of the second arc-shaped holes 25 and 38.

[0031] One end of a flexible connecting wire 72 made of metal (see FIGS. 8 to 10) passes through the guide hole 68B of the guide member 68 by sliding movement, and the caulking portion 63B of the wire connecting member 63 is caulked to the one end. That is, one end of the connecting wire 72 is fixed to the wire connecting member 63.

[0032] The armrest 80 includes a metal base member 81, a cushion member covering the periphery of the base member 81, and a cover member 88 (see FIG. 1) covering the periphery of the cushion member. A rotation center hole 82 is provided at one end in the longitudinal direction of the base member 81. The left end portion of the first rotating shaft 52 penetrates through the rotation center hole 82 so as to be relatively rotatable. Therefore, the base member 81 can rotate around the first rotating shaft 52. More specifically, the armrest 80 can rotate relative to the seat back 17 between a rear end position shown by the solid line in FIGS. 1 and 3 and FIG. 8 and a front end position shown by the two-dot chain line in FIGS. 2 and 3 and FIG. 10.

[0033] A pressing member 85 is fixed to the front surface (lower surface) of the base end portion of the base member 81. The pressing member 85 has a pressing portion 86 having a cylindrical shape centered on an axis extending in the left-right direction. A pressed protrusion 58 is located on the circumference centered on the first rotation axis 52 and passing through the pressing portion 86. Further, the pressing portion 86 is located in front of the pressed protrusion 58. Note that the shape of the pressing portion 86 may be a shape different from the cylindrical shape.

[0034] A second rotation axis 83, which is a cylinder centered on an axis 83X parallel to the left-right direction, is rotatably supported around the axis 83X on the right side portion of the tip end portion of the armrest 80. The second rotation axis 83 is a part of the table 84. That is, the table 84 includes a table main body 84A that is a plate-like member and a second rotation axis 83 fixed to the left side portion of the table main body 84A. The table 84 is rotatable between a folded position shown by a solid line in FIGS. 1 and 3 and a use position shown by a one-dot chain line and a two-dot chain line in FIG. 3 and shown in FIG. 2 with respect to the armrest 80. Further, the other end portion of the linking wire 72 is fixed to the second rotation axis 83 through an internal space of the armrest 80 (not shown) and a through hole (not shown) formed in the right side surface of the front end portion of the armrest 80. Further, the other end portion of the linking wire 72 is fixed to a portion located above the axis 83X of the second rotation axis 83 after passing through the front side of the axis 83X in a side view when the armrest 80 is in the rear end position.

[0035] The rotating member pressing body 87 is integrally formed of metal. The rotating member pressing body 87 includes a flat base portion 87A and a substantially U-shaped U-shaped portion 87B connected to the rear end portion of the base portion 87A. As shown in FIG. 8, the entire left side surface of the rotating member pressing body 87 is fixed to the right side surface near the base end portion of the base member 81.

[0036] Among the configurations described above, the wire connection member 63, the guide member 68, and the linking wire 72 are components of the interlocking mechanism 95, and the first bracket 22, the first spring member 29, the second spring member 30, the second bracket 32, the rotating member 54, the first moving member 60, the second moving member 65, the pressing member 85, and the rotating member pressing body 87 are components of the interlocking release mechanism 100.

[0037] (Function and Effect) Next, the function and effect of this embodiment will be described.

[0038] The armrest 80 of the vehicle seat 15 shown in FIG. 1 is at the rear end position, and the table 84 is at the folded position. At this time, as shown in FIG. 8, the rotating member 54 is in the first position where the shaft portion 62 is located at the lower end portions of the first arc hole 24 and the first arc hole 37, and the shaft portion 67 is located at the rear end portions of the second arc hole 25 and the second arc hole 38. At this time, the U-shaped portion 87B of the rotating member pressing body 87 contacts the outer peripheral surface of the rotating member 54. Further, as shown in FIG. 5, the stopper portion 29B and the stopper portion 30B contact the upper end portion of the head portion 61 of the first moving member 60 while being elastically deformed. That is, the stopper portion 29B and the stopper portion 30B regulate the upward movement of the shaft portion 62 inside the first arc hole 24 (the first arc hole 37). Due to the action of the stopper mechanism (not shown), the armrest 80 is held at the rear end position unless a forward force is applied to the armrest 80. Further, at this time, as shown in FIG. 8, the portion of the link wire 72 located on the tip side of the guide member 68 extends toward the second rotation shaft 83 side. Therefore, the link wire 72 is substantially in a tensioned state. Here, a portion of the link wire 72 located above the guide member 68 (the guide hole 68B) in a side view is defined as the upper portion 72U, and a portion of the link wire 72 located below the guide member 68 (the guide hole 68B) in a side view is defined as the lower portion 72D. The angle formed by the upper portion 72U and the lower portion 72D in the side view at this time is 72α1. Note that the link wire 72 and the rotating member pressing body 87 are always maintained in a separated state.

[0039] When a forward force of a magnitude equal to or greater than a predetermined value is applied to the armrest 80 of the vehicle seat 15 shown in FIG. 1, the armrest 80 rotates counterclockwise in FIG. 8 with respect to the seat back 17, the first bracket 22, the second bracket 32, and the rotating member 54, and reaches the position indicated by the dotted line (broken line) in FIG. 3. The angle formed by the upper portion 72U and the lower portion 72D at this time is 72α2, and 72α2 < 72α1. Also at this time, the link wire 72 substantially maintains a tensioned state. Therefore, the table 84 rotates from the folded position toward the use position by the force exerted from the link wire 72 to the second rotation shaft 83.

[0040] When the counterclockwise rotation angle of the armrest 80 in FIG. 8 reaches a predetermined angle, the armrest 80 rotates to the intermediate position shown by the dashed-dotted line in FIG. 3 and FIG. 9 with respect to the seat back 17, the first bracket 22, the second bracket 32, and the rotating member 54. Also at this time, the rotating member 54 is located at the first position shown in FIG. 8. The angle formed by the upper portion 72U and the lower portion 72D at this time is 72α3, and 72α3 < 72α2. Therefore, the link wire 72 substantially maintains a tensioned state while the armrest 80 rotates from the rear end position to the intermediate position. Therefore, when the armrest 80 reaches the intermediate position, the second rotation shaft 83 and the table 84 rotate to the use position by the force exerted from the link wire 72 to the second rotation shaft 83 as shown by the dashed-dotted line in FIG. 3. As shown in FIG. 3, when the armrest 80 is located between the rear end position and the intermediate position, the center of gravity 84G of the table 84 is located behind the second rotation shaft 83 (axis 83X). Therefore, the table 84 tries to rotate clockwise in FIG. 3 using gravity. However, when the armrest 80 rotates from the rear end position to the intermediate position, the table 84 is rotated counterclockwise in FIG. 3 by the link wire 72 in a tensioned state.

[0041] Unless a forward force is applied to the armrest 80, the armrest 80 is held in the intermediate position. Further, when the armrest 80 reaches the intermediate position, the pressing portion 86 of the pressing member 85 fixed to the armrest 80 contacts the pressed projection 58 of the rotating member 54 from the front (see FIG. 9).

[0042] Incidentally, the rotation of the table 84 forward (downward) from the use position is restricted by a mechanical stopper. Therefore, when the armrest 80 is rotated from the intermediate position toward the use position side while the rotating member 54 is positioned at the first position, an excessively large force is applied to the second rotating shaft 83 and the table 84 from the linking wire 72. That is, it is not possible to rotate the armrest 80 from the intermediate position toward the front end position side while the rotating member 54 is positioned at the first position. However, the vehicle seat 15 of the present embodiment includes a first spring member 29 and a second spring member 30. When the armrest 80 of the vehicle seat 15 in the state of FIG. 9 is rotated from the intermediate position toward the front end position side, the pressing portion 86 of the pressing member 85 presses the pressed protrusion 58 rearward, and the rotating member 54 rotates integrally with the armrest 80. Therefore, the head 61 of the first moving member 60 supported by the rotating member 54 rides over the stopper portions 29B and 30B upward while greatly elastically deforming the stopper portions 29B and 30B. Therefore, the shaft portion 62 can move upward inside the first arc hole 24 (first arc hole 37), and the rotating member 54 can rotate from the first position toward the second position side. That is, the interlock release mechanism 100 releases the interlock between the armrest 80 and the table 84 by the interlock mechanism 95 (wire 72). Therefore, the table 84 is held at the use position, and the armrest 80 rotates toward the front end position side while the inclination angles of the upper portion 72U and the lower portion 72D are maintained at 72α3 having the magnitude shown in FIG. 9.

[0043] When the counterclockwise rotation angle of the armrest 80 reaches a predetermined angle, the armrest 80 rotates to the front end position shown by the two-dot chain line in FIG. 3, FIGS. 2 and 10 with respect to the seat back 17, the first bracket 22, and the second bracket 32, the shaft portion 62 reaches the position shown in FIG. 10 of the first arc hole 24 (first arc hole 37), and the shaft portion 67 reaches the position shown in FIG. 10 of the second arc hole 25 (second arc hole 38). Also at this time, the table 84 is at the use position, and the inclination angles of the upper portion 72U and the lower portion 72D are maintained at 72α3 having the magnitude shown in FIG. 9. Therefore, when the armrest 80 rotates from the rear end position to the front end position, the linking wire 72 substantially maintains a tension state.

[0044] When a backward force greater than or equal to a predetermined value is applied to the armrest 80 of the vehicle seat 15 shown in FIG. 10 to return the armrest 80 from the front end position to the rear end position, the armrest 80 and the rotating member 54 rotate clockwise in FIG. 10 with respect to the seat back 17, the first bracket 22, and the second bracket 32 about the first rotation axis 52, and eventually the armrest 80 reaches the intermediate position shown by the dashed-dotted line in FIG. 3 and FIG. 9. Also when the armrest 80 rotates from the front end position to the intermediate position in this way, the inclination angles of the upper part 72U and the lower part 72D are maintained at 72α3, and the linking wire 72 substantially maintains a tensioned state.

[0045] When a backward force greater than or equal to a predetermined value is applied to the armrest 80 of the vehicle seat 15 shown in FIG. 9, the pressing part 86 of the pressing member 85 begins to move forward away from the pressed projection 58 of the rotating member 54, and the armrest 80 rotates clockwise in FIG. 9 with respect to the seat back 17, the first bracket 22, the second bracket 32, and the rotating member 54 about the first rotation axis 52. By the way, as shown by the dashed-dotted line in FIG. 3, at this time, the center of gravity 84G of the table 84 in the use position is located behind the second rotation axis 83 (axis line 83X). Therefore, the table 84 rotates from the use position toward the folding position using its own weight (gravity).

[0046] When the armrest 80 returns to the rear end position, the table 84 rotates to the folding position by its own weight. At this time, the U-shaped part 87B of the rotating member pressing body 87 that has been separated from the rotating member 54 contacts the outer peripheral surface of the rotating member 54 from the front. Therefore, when the table 84 rotates to the folding position, the rotating member 54 located at the second position returns to the first position, and the stopper part 29B and the stopper part 30B elastically deform and contact the upper end part of the head 61 again.

[0047] As described above, the vehicle seat 15 of the present embodiment includes a linking wire 72 (linking mechanism 95). The linking wire 72 interlocks the armrest 80 (rotating member 54) and the table 84 such that when the armrest 80 is at the rear end position, the table 84 is at the folding position, and when the armrest 80 is in the region between the intermediate position and the front end position, the table 84 is at the use position. Therefore, compared with the case where the armrest 80 rotates between the rear end position and the intermediate position while the table 84 remains at the use position or the folding position, it is easier for the occupant to rotate the armrest 80 at the rear end position toward the front end position. That is, if the armrest 80 rotates from the rear end position to the intermediate position while the table 84 is at the use position, the table 84 will collide with the ceiling of the vehicle. On the other hand, if the armrest 80 is rotated from the rear end position to the front end position while the table 84 is at the folding position, there is a high possibility that a part of the occupant's body will be located on the rotation trajectory of the table 84 at the front end position of the armrest 80. In contrast, in the present embodiment, when the armrest 80 rotates from the rear end position to the intermediate position, the table 84 does not collide with the ceiling of the vehicle, and there is a low possibility that a part of the occupant's body will be located on the rotation trajectory of the table 84. Further, when the armrest 80 moves to the front end position, the table 84 is at the use position due to the action of the linking wire 72. That is, the occupant of the vehicle can position the table 84 at the use position by rotating the armrest 80 to the front end position without adjusting the rotation position of the table 84 by hand. Therefore, the vehicle seat 15 can improve the usability for the occupant of the armrest 80 rotatably connected to the seat back 17 and the table 84 rotatably connected to the armrest 80.

[0048] Furthermore, when the armrest 80 rotates from the intermediate position to the rear end position, the vehicle seat 15 can rotate the table 84 from the use position to the folding position by using its own weight (gravity). That is, although the vehicle seat 15 does not have a mechanism for rotating the table 84 from the use position to the folding position, when the armrest 80 rotates from the intermediate position to the rear end position, the table 84 can be rotated from the use position to the folding position.

[0049] Furthermore, the interlocking mechanism 95 and the interlocking release mechanism 100 of the vehicle seat 15 are realized with a simple configuration.

[0050] As described above, the embodiments of the present invention have been explained, but the present invention is not limited to the first and second embodiments.

[0051] For example, armrests 80 may be rotatably supported on both left and right sides of the seat back 17 via rotation support mechanisms 20, and a table 84 may be rotatably supported on the left and right armrests 80 via a second rotation shaft 83.

[0052] When the armrest 80 rotates between the front end position and the intermediate position, the vehicle seat 15 may be configured such that the rotation position of the armrest 80 can be temporarily held at an arbitrary position between the front end position and the intermediate position.

Explanation of reference numerals

[0053] 15 Vehicle seat 17 Seat back 22 First bracket (bracket) 32 Second bracket (bracket) 52 First rotation shaft 54 Rotating member 60 First moving member (member to be guided) 63 Wire connection member (member to be guided) 72 Link wire (link member) 80 Armrest 83 Second rotation shaft 84 Table 95 Interlocking mechanism 100 Interlocking release mechanism

Claims

1. An armrest rotatably connected between a front end position and a rear end position behind the front end position about a first rotation axis extending in the left - right direction of the seat on a seat back; A table rotatably connected to the armrest between a folded position and a use position in front of the folded position about a second rotation axis extending in the left - right direction of the seat; An interlocking mechanism for interlocking the armrest and the table such that the table is positioned at the folded position when the armrest is at the rear end position and the table is positioned at the use position when the armrest is at the front end position; A vehicle seat comprising the above.

2. The vehicle seat according to claim 1, further comprising an interlocking release mechanism for releasing the interlocking between the armrest and the table by the interlocking mechanism and positioning the table at the use position when the armrest rotates between the front end position and an intermediate position between the front end position and the rear end position.

3. The interlocking release mechanism is configured such that relative rotation with respect to the seat back is restricted when the armrest rotates between the rear end position and the intermediate position, and comprises a rotating member that rotates relative to the seat back about the first rotation axis when the armrest rotates between the intermediate position and the front end position. The interlocking mechanism comprises a flexible linking member that links the table and the rotating member, positions the table at the folded position when the armrest is at the rear end position, and positions the table at the use position when the armrest moves from the rear end position to the intermediate position. The vehicle seat according to claim 2. The vehicle seat according to claim 2, wherein the interlocking release mechanism comprises:

4. A bracket fixed to the seat back, having an arc - shaped hole centered on the first rotation axis, and rotatably supporting the rotating member about the first rotation axis; A guided member provided on the rotating member such that the arc - shaped hole can move relative to the rotating member when the armrest rotates between the front end position and the intermediate position, and to which the linking member is connected. The vehicle seat according to claim 3.

5. The vehicle seat according to any one of claims 2 to 4, wherein when the armrest rotates from the intermediate position to the rear end position, the table rotates from the use position to the folded position using its own weight. ​ ​

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