Vehicular seat frame and vehicular seat

Abstract

Provided is a vehicular seat frame capable of suppressing shifting of a seated occupant's back and having a simple configuration. This vehicular seat frame (20) comprises: a floor attachment part (21) attached to a vehicle body floor part; a cushion frame rear part (50) constituting a rear part of the skeleton of a seat cushion (12); a cushion frame front part (48) constituting a front part of the skeleton of the seat cushion (12) and connected to the cushion frame rear part (50) so as to be rotatable around a middle folding shaft (52); a front link (26) rotatably connected to the cushion frame front part (48) and the floor attachment part (21); a seat back frame (24) that is provided on the rear end side of the cushion frame rear part (50) and constitutes the skeleton of a seat back (14); and a recliner (28) that is disposed between the cushion frame rear part (50) and the floor attachment part (21) and that allows the cushion frame rear part (50) to rotate relative to the floor attachment part (21) around the axis of the recliner in a state in which a recline lever (84) that can be operated by the occupant is unlocked.

Description

Vehicle seat frame and vehicle seat

[0001] The present disclosure relates to vehicle seats, and more particularly to vehicle seat frames.

[0002] Japanese Patent Publication No. 6962845 discloses a vehicle seat designed to prevent the relative positional shift between the occupant's back and the seat back (hereinafter referred to as "back shift") when the seat back is reclined. This vehicle seat includes a rear cushion frame that is rotatable about a rear axis relative to the vehicle body floor, a front cushion frame that is connected to the rear cushion frame so as to be rotatable about a folding axis, and a seatback frame provided on the rear end side of the rear cushion frame. This vehicle seat also includes a drive mechanism that moves the front cushion frame and the rear cushion frame relative to each other in the seat up and down direction between a non-reclining state in which the rear cushion frame extends from the front cushion frame toward the rear of the seat and a reclining state in which the rear cushion frame is tilted rearward and downward relative to the front cushion frame.

[0003] Japanese Patent Application Laid-Open Publication No. 2005-319341 discloses a seat reclining device in which the seat cushion's bearing surface angle changes in conjunction with the rearward tilt of the seat back, thereby reducing hip point movement on the seat cushion. In this seat reclining device, a base plate is mounted on the vehicle body, and an arm is rotatably supported on the base plate. The seat back is fixed to the arm, and one end of an interlocking plate is rotatably attached to the arm. The other end of the interlocking plate is fixed to the rear of the seat cushion, and the front of the seat cushion is supported by a bracket mounted on the vehicle body so that it can move in the fore-and-aft direction. This allows the seat cushion's bearing surface angle to change in accordance with the seat back's tilt angle.

[0004] The vehicle seat disclosed in Japanese Patent No. 6962845 has a complex configuration because the drive mechanism includes three motors and requires a control device to control the operation of each motor. On the other hand, the seat reclining device disclosed in Japanese Patent Laid-Open No. 2005-319341 is a manual type that does not require a motor or control device, so it has a simple configuration, but the back can shift.

[0005] In consideration of the above, the present disclosure aims to provide a vehicle seat frame and a vehicle seat that can suppress back slippage and have a simple configuration.

[0006] a cushion frame front portion that forms the front portion of the skeleton of the seat cushion and is connected to the cushion frame rear portion so as to be rotatable around a center bend axis whose axis is the seat width direction; a front link that is rotatably connected to the cushion frame front portion so as to be rotatable around an upper front axis whose axis is the seat width direction and is connected to the floor mounting portion so as to be rotatable around a lower front axis whose axis is the seat width direction; a seat back frame that is provided on the rear end side of the cushion frame rear portion and forms the skeleton of the seat back; and a recliner that is arranged between the cushion frame rear portion and the floor mounting portion so as to have an axis which is the seat width direction, has an operating unit that can be operated by an occupant, and when the operating unit is operated to be unlocked, allows the cushion frame rear portion to rotate around its own axis relative to the floor mounting portion.

[0007] In the vehicle seat frame of the first aspect, a rear cushion frame portion constituting the rear portion of the skeleton of the seat cushion and a front cushion frame portion constituting the front portion of the skeleton of the seat cushion are rotatably connected about a center-folded axis having an axis in the seat width direction. A front link is connected to the front cushion frame portion so as to be rotatable about an upper front axis having an axis in the seat width direction. This front link is connected to a floor mounting portion so as to be rotatable about a lower front axis having an axis in the seat width direction. A seatback frame constituting the skeleton of the seat back is erected from the rear end side of the rear cushion frame. A recliner is disposed between the rear cushion frame portion and the floor mounting portion so as to have an axis in the seat width direction. This recliner has an operating portion that can be operated by an occupant.

[0008] When the operating unit is unlocked, the rear cushion frame is allowed to rotate relative to the floor mounting portion around the recliner axis. In this state, the floor mounting portion, rear cushion frame, front cushion frame, and front link can operate as a four-bar link mechanism. This operation causes the front cushion frame and rear cushion frame to rotate relative to each other around the folding axis, causing the rear cushion frame to rotate around the recliner axis. This allows the seatback frame, located at the rear end of the rear cushion frame, to be reclined (tilted backward). In this case, the rear cushion frame is reclined together with the seatback frame around the folding axis, preventing the occupant's back from shifting. Furthermore, a manual recliner can be used, simplifying the configuration.

[0009] The vehicle seat frame of the second aspect is the same as that of the first aspect, in which the operating unit includes a recliner lever rotatably attached to the rear of the cushion frame or the seatback frame, and an operating force transmission unit that transmits the operating force of the recliner lever to the recliner.

[0010] In the vehicle seat frame of the second aspect, when the recliner lever, which is rotatably attached to the rear portion of the cushion frame or the seatback frame, is rotated, the operating force of the recliner lever is transmitted to the recliner via the operating force transmission unit, thereby releasing the restriction on the recliner. The recliner lever can be located in a position that is easily reachable by the occupant, thereby improving operability for the occupant.

[0011] The vehicle seat frame of the third aspect is the same as that of the first or second aspect, and is provided with a spiral spring that is arranged coaxially with the recliner and biases the rear of the cushion frame in the direction in which the seatback frame stands up.

[0012] In the vehicle seat frame of the third aspect, the spiral spring arranged coaxially with the recliner biases the rear portion of the cushion frame in the direction in which the seatback frame stands up, so that the occupant can raise the seatback by the biasing force of the spiral spring by releasing the restriction of the recliner when the seatback is in the reclined state.

[0013] A vehicle seat frame according to a fourth aspect is any one of the first to third aspects, wherein the rear portion of the cushion frame and the seat back frame are integrally connected.

[0014] In the vehicle seat frame of the fourth aspect, the rear portion of the cushion frame and the seatback frame are integrally connected, so that the number of parts and the number of steps required to assemble the parts can be reduced.

[0015] The vehicle seat of the fifth aspect comprises a seat cushion on which an occupant sits and a seat back that supports the occupant's back, and the framework of the seat cushion and the seat back is formed by a vehicle seat frame of any one of the first to fourth aspects.

[0016] In the vehicle seat of the fifth aspect, the back of the occupant seated on the seat cushion is supported by the seat back, and the framework of the seat cushion and the seat back is formed by the vehicle seat frame of any one of the first to fourth aspects, thereby achieving the above-mentioned effects.

[0017] As described above, according to the present disclosure, it is possible to obtain a vehicle seat frame and a vehicle seat that can suppress back slippage and have a simple configuration.

[0018] Fig. 1 is a side view showing a vehicle seat according to an embodiment; Fig. 2 is a side view showing a state in which a seat back frame of the vehicle seat according to an embodiment is reclined; Fig. 3 is a first perspective view showing a main part of a vehicle seat frame according to an embodiment; Fig. 4 is a second perspective view showing a main part of a vehicle seat frame according to an embodiment; Fig. 5 is a third perspective view showing a main part of a vehicle seat frame according to an embodiment;

[0019] A vehicle seat 10 according to an embodiment of the present disclosure will be described below with reference to Figures 1 to 5. Note that some reference numerals may be omitted in each figure to make the drawings easier to understand. Arrows FR, UP, and LH shown as appropriate in each figure indicate the front, top, and left directions of the vehicle seat 10, respectively. Hereinafter, when the front-rear, left-right, top-bottom directions are used in the description, they will refer to directions relative to the vehicle seat 10 unless otherwise specified.

[0020] 1, a vehicle seat 10 includes a seat cushion 12 on which an occupant P sits, a seat back 14 that supports the back of the occupant P, and a headrest 16 that supports the head of the occupant P. The framework of the seat cushion 12 and the seat back 14 is formed by a vehicle seat frame 20 according to an embodiment of the present disclosure.

[0021] As shown in Figures 1 to 5, the vehicle seat frame 20 is configured to include a floor mounting portion 21 that is attached to a vehicle body floor (not shown), a seat cushion frame 22 that forms the skeleton of the seat cushion 12, a pair of left and right front links 26, a seat back frame 24 that forms the skeleton of the seat back 14, a pair of left and right recliners 28 that are arranged between the seat cushion frame 22 and the floor mounting portion 21, and a headrest frame 30 that forms the skeleton of the headrest 16.

[0022] Pads (not shown) covered with skins 32, 34, 36 (not shown except in Fig. 1) are attached to the seat cushion frame 22, the seatback frame 24, and the headrest frame 30. The occupant P shown in Figs. 1 and 2 is, for example, an AM50 (50th percentile of adult American males) dummy.

[0023] The floor mounting portion 21 is configured to include a pair of left and right slide rails 38 and a pair of left and right risers 40. The left and right slide rails 38 are disposed below both left and right ends of the seat cushion 12. Each slide rail 38 has a lower rail 42 and an upper rail 44. The lower rail 42 and the upper rail 44 are configured, for example, from a press-formed metal plate, and are formed in an elongated shape with the longitudinal direction extending in the front-to-rear direction.

[0024] The front and rear ends of the lower rails 42 are fixed to the vehicle floor via two front and rear brackets (reference numerals omitted). The upper rails 44 are supported so as to be slidable in the fore-and-aft direction relative to the lower rails 42. An unlocking lever 46 is bridged between the front ends of the left and right upper rails 44. When this unlocking lever 46 is operated, a locking mechanism (not shown) is unlocked, allowing the left and right upper rails 44 to slide relative to the left and right lower rails 42.

[0025] The left and right risers 40 are made of, for example, press-formed metal plates, and are elongated plates with the longitudinal direction extending in the front-to-rear direction and the thickness direction extending mainly in the left-to-right direction (seat width direction). Lower flange portions (reference numerals omitted) that bend inward in the left-to-right direction are provided at the lower ends of the left and right risers 40. The lower flange portions of the left and right risers 40 are superimposed on the upper surfaces of the left and right upper rails 44 and are fixed to the left and right upper rails 44 by means of bolts or the like.

[0026] The seat cushion frame 22 is configured such that a cushion frame front part 48 constituting the front part of the skeleton of the seat cushion 12 and a cushion frame rear part 50 constituting the rear part of the skeleton of the seat cushion 12 are rotatably connected via left and right shoulder bolts 52.

[0027] The cushion frame front portion 48 includes a pair of left and right side frame portions 54, a front frame portion 56 spanning between the upper front ends of the left and right side frame portions 54, and a pipe frame portion 58 spanning between the rear ends of the left and right side frame portions 54. The left and right side frame portions 54 and the front frame portion 56 are made of, for example, press-formed metal plates, and the pipe frame portion 58 is made of, for example, a metal pipe.

[0028] The cushion frame rear portion 50 includes a pair of left and right side frame portions 60, a pipe frame portion 62 spanning the front ends of the left and right side frame portions 60, and a rear frame portion 64 spanning the rear ends of the left and right side frame portions 60. The left and right side frame portions 60 are formed, for example, from press-formed metal plates, and the pipe frame portion 62 and rear frame portion 64 are formed, for example, from metal pipes. A plurality of seat cushion springs 66 are suspended between the pipe frame portion 62 and the rear frame portion 64.

[0029] Connecting portions 60A extending downward are provided at the longitudinally intermediate portions of the left and right side frame portions 60. The lower ends of the left and right connecting portions 60A are positioned inside the left and right risers 40 in the left-right direction. Recliners 28 are respectively positioned between the lower ends of the left and right connecting portions 60A and the left and right risers 40. The left and right recliners 28 are well-known manual recliners, and are positioned with their axes aligned in the left-right direction. The left and right recliners 28 are fixed to the left and right connecting portions 60A and the left and right risers 40 by means of welding or the like.

[0030] The rear ends of the left and right side frame portions 54 included in the front cushion frame portion 48 are overlapped with the front ends of the left and right side frame portions 60 included in the rear cushion frame portion 50 from the outside in the seat width direction. Then, left and right shoulder bolts 52 that pass through the rear ends of the left and right side frame portions 54 and the front ends of the left and right side frame portions 60 are threadedly engaged with nuts (not shown). This connects the front cushion frame portion 48 and the rear cushion frame portion 50 so that they can rotate relative to each other around the left and right shoulder bolts 52.

[0031] The left and right shoulder bolts 52 have their axial direction in the left-right direction (seat width direction) and are arranged coaxially with each other. In this embodiment, as shown in FIG. 1 , the difference (positional deviation) in the positioning of the left and right shoulder bolts 52 and the hip point HP of the occupant P in the front-rear direction of the seat back is set small. Note that the front-rear direction of the seat back is a direction perpendicular to the torso line of the occupant P in a side view of the seat. The left and right shoulder bolts 52 correspond to the "bending axis" in this disclosure. Hereinafter, the shoulder bolts 52 may be referred to as the "bending axis 52."

[0032] The seatback frame 24 includes left and right side frame portions 68, an upper frame portion 70 spanning the upper ends of the left and right side frame portions 68, and a back panel portion 72 spanning the lower ends of the left and right side frame portions 68. The left and right side frame portions 68 and the back panel portion 72 are formed, for example, from press-formed metal plates, and the upper frame portion 70 is formed, for example, from metal pipes. A plurality of seatback springs 74 are stretched between the left and right side frame portions 68. A headrest frame 30, which forms the framework of the headrest 16, is connected to the upper frame portion 70. The headrest frame 30 is formed, for example, from metal pipes and has a generally inverted U-shape when viewed in the front-to-rear direction.

[0033] The seatback frame 24 configured as described above is provided on the rear end side of the cushion frame rear portion 50. Specifically, back frame connecting portions 60B extending upward are provided at the rear ends of the left and right side frame portions 60 of the cushion frame rear portion 50. The lower ends of the left and right side frame portions 68 of the seatback frame 24 overlap the left and right back frame connecting portions 60B from the inside in the left-right direction. The left and right side frame portions 68 are fixed to the left and right back frame connecting portions 60B by means of, for example, welding, bolting, or the like.

[0034] The left and right front links 26 are formed into elongated shapes, for example, from press-formed metal plates. The upper portions of the left and right front links 26 overlap the front ends of the left and right side frame portions 54 of the cushion frame front portion 48 from the inside in the left-right direction. The lower portions of the left and right front links 26 overlap the front portions of the left and right risers 40 from the inside in the left-right direction.

[0035] The upper ends of the left and right front links 26 are connected in the left-right direction by a front pipe 76. The front pipe 76 corresponds to the "upper front axle" in this disclosure. This front pipe 76 is made of, for example, a metal pipe and is arranged with its axis extending in the left-right direction. Both axial ends of the front pipe 76 pass through the left and right front links and are fixed to the left and right front links 26 by means of welding or the like.

[0036] Furthermore, both axial ends of the front pipe 76 pass through the left and right side frame portions 54 of the cushion frame front portion 48 and are connected to the left and right side frame portions 54 by means of caulking or the like. The front pipe 76 is rotatable relative to the left and right side frame portions 54. As a result, the left and right front links 26 are connected to the left and right side frame portions 54 so as to be rotatable about an axis extending in the left-right direction.

[0037] Left and right shoulder bolts 78 penetrate the left and right risers 40 from the outside in the left-right direction through the lower ends of the left and right front links 26, and each shoulder bolt 78 is threaded into a nut (not shown). The left and right shoulder bolts 78 each correspond to the "lower front axle" in this disclosure. The left and right shoulder bolts 78 have an axial direction in the left-right direction, and the left and right front links 26 are connected to the left and right risers 40 so as to be rotatable relative to them about the left and right shoulder bolts 78.

[0038] The left and right recliners 28, located between the cushion frame rear portion 50 and the left and right risers 40, are connected by a reclining shaft 80 whose axis is in the left-right direction and are configured to move in unison when the reclining shaft 80 rotates. A first reclining lever 82 and a spiral spring 88 are located on the left-right outer side of the rear end of the left riser 40. The spiral spring 88 is also located on the left-right outer side of the rear end of the right riser 40. Note that FIGS. 1 to 5 only show the spiral spring 88 in a simplified form. The first reclining lever 82 is formed elongatedly from, for example, a press-formed metal plate and is positioned with its longitudinal direction extending in the front-to-rear direction. The rear end of the first reclining lever 82 is fixed to the reclining shaft 80.

[0039] The first recliner lever 82 is rotatable about the reclining shaft 80. The first recliner lever 82 constitutes part of the "operating unit" in this disclosure. When the front portion of the first recliner lever 82 is lifted upward, the reclining shaft 80 rotates in one direction about its axis together with the first recliner lever 82. In this state, the left and right recliners 28 are unlocked, and the cushion frame rear portions 50 are allowed to rotate about the axes of the left and right recliners 28 relative to the left and right risers 40.

[0040] When the rear cushion frame 50 rotates relative to the left and right risers 40, the rear cushion frame 50, the front cushion frame 48, the left and right front links 26, and the left and right risers 40 operate as a four-joint link mechanism (see the dashed lines labeled FL in FIGS. 1 to 5 ). This movement causes the front cushion frame 48 and the rear cushion frame 50 to rotate relative to each other about the folding axis 52, and the rear cushion frame 50 to rotate about the axes of the left and right recliners 28. This allows the seat back frame 24, which is located at the rear end of the rear cushion frame 50, to be reclined, as shown in FIG. 2 . In this case, the rear cushion frame 50 is reclined together with the seat back frame 24 about the folding axis.

[0041] The left and right spiral springs 88 are disposed coaxially with the left and right recliners 28. The inner ends of the left and right spiral springs 88 are anchored to the left and right risers 40, and the outer ends of the left and right spiral springs 88 are anchored to the left and right side frame portions 60 of the cushion frame rear portion 50. These spiral springs 88 urge the cushion frame rear portion 50 in the direction in which the seat back frame 24 rises.

[0042] A second recliner lever 84 is attached to the left side frame portion 60 of the cushion frame rear portion 50. The second recliner lever 84 corresponds to the "recliner lever" in this disclosure and constitutes part of the "operating unit" in this disclosure. This second recliner lever 84 is formed into an elongated shape from, for example, a press-formed metal plate, and is disposed on the left-right outer side of the left side frame portion 60, with the longitudinal direction being the front-to-rear direction. The rear end of the second recliner lever 84 is attached to the back frame connecting portion 60B of the left side frame portion 60 so as to be rotatable around a rotation shaft 90 whose axis is in the left-to-right direction.

[0043] A recliner cable 86, which serves as an operating force transmission unit, is stretched between the second recliner lever 84 and the first recliner lever 82. The recliner cable 86 constitutes part of the "operating unit" in this disclosure. When the front portion of the second recliner lever 84 is lifted upward, the second recliner lever 84 rotates upward around the rotation axis 90. The operating force applied to the second recliner lever 84 is transmitted to the first recliner lever 82 by the recliner cable 86, causing the reclining shaft 80 to rotate in one direction around its axis together with the first recliner lever 82. In this state, the left and right recliners 28 are unlocked, allowing the rear cushion frame portions 50 to rotate around the axes of the left and right recliners 28 relative to the left and right risers 40. Note that the operating force transmission unit is not limited to the recliner cable 86 and may be a link or the like.

[0044] Next, the operation and effect of this embodiment will be described. In the vehicle seat 10 configured as described above, the back of an occupant seated on the seat cushion 12 is supported by the seat back 14. The framework of the seat cushion 12 and the seat back 14 is formed by a vehicle seat frame 20. In this vehicle seat frame 20, a cushion frame rear portion 50 that forms the rear portion of the framework of the seat cushion 12 and a cushion frame front portion 48 that forms the front portion of the framework of the seat cushion 12 are connected to each other so as to be rotatable about a folding axis 52 whose axial direction is in the left-right direction (seat width direction).

[0045] A front link 26 is connected to the cushion frame front portion 48 so as to be rotatable about a front pipe 76 whose axis is in the left-right direction. The front link 26 is connected to the floor mounting portion 21 so as to be rotatable about a shoulder bolt 78 whose axis is in the seat width direction. A seatback frame 24, which forms the framework of the seatback 14, stands upright from the rear end side of the cushion frame rear portion 50. A recliner 28 is disposed between the cushion frame rear portion 50 and the floor mounting portion 21 so as to have its axis in the seat width direction. The recliner 28 has a first recliner lever 82 and a second recliner lever 84 that can be operated by the occupant.

[0046] When the first recliner lever 82 or the second recliner lever 84 is unlocked, the rear cushion frame 50 can rotate relative to the floor mount 21 around the axis of the recliner 28. In this state, the floor mount 21, rear cushion frame 50, front cushion frame 48, and front link 26 can operate as a four-bar link mechanism. This operation causes the front cushion frame 48 and the rear cushion frame 50 to rotate relative to each other around the folding axis 52, and the rear cushion frame 50 to rotate around the axis of the recliner 28. This allows the seatback frame 24, which is located at the rear end of the rear cushion frame 50, to be reclined. In this case, the rear cushion frame 50 is reclined together with the seatback frame 24 around the folding axis 52, thereby preventing the occupant's back from shifting. Furthermore, a manual recliner 28 can be used, simplifying the configuration.

[0047] In this embodiment, when the second recliner lever 84, which is rotatably attached to the cushion frame rear portion 50, is rotated, an operating force is transmitted to the recliner 28 via the recliner cable 86. This releases the restriction on the recliner 28. The second recliner lever 84 is located in a position that is easier for the occupant to reach than the first recliner lever 82, thereby improving operability for the occupant.

[0048] In this embodiment, the cushion frame rear portion 50 is biased in a direction that causes the seat back frame 24 to stand up by a spiral spring 88 that is disposed coaxially with the recliner 28. Therefore, when the seat back 14 is in a reclined state, the occupant can release the restriction of the recliner 28, thereby causing the seat back 14 to stand up by the biasing force of the spiral spring 88.

[0049] In the above embodiment, the left and right side frame portions 60 of the cushion frame rear portion 50 and the left and right side frame portions 68 of the seatback frame 24 are manufactured separately and fixed together by means of welding, bolts, or the like, but this is not limiting. The left and right side frame portions 60 and the left and right side frame portions 68 may also be manufactured as a single unit. This reduces the number of parts and the number of man-hours required to assemble the parts.

[0050] In the above embodiment, the second recliner lever 84 is attached to the rear cushion frame 50, but this is not limiting, and the second recliner lever 84 may be attached to the seatback frame 24. Also, one of the first recliner lever 82 and the second recliner lever 84 may be omitted.

[0051] In addition, the present disclosure can be implemented with various modifications within the scope of the gist thereof. Furthermore, it goes without saying that the scope of the rights of the present disclosure is not limited to the above-described embodiment.

[0052] The disclosure of Japanese Patent Application No. 2023-198551, filed on November 22, 2023, is incorporated herein by reference in its entirety. All documents, patent applications, and technical standards described herein are incorporated herein by reference to the same extent as if each individual document, patent application, and technical standard was specifically and individually indicated to be incorporated by reference.

Claims

a cushion frame front portion constituting a front portion of the skeleton of the seat cushion, and connected to the rear portion of the cushion frame so as to be rotatable about a center fold axis whose axis direction is the seat width direction; a front link connected to the front portion of the cushion frame so as to be rotatable about an upper front axis whose axis direction is the seat width direction, and connected to the floor mounting portion so as to be rotatable about a lower front axis whose axis direction is the seat width direction; a seat back frame provided at the rear end side of the rear portion of the cushion frame and constituting the skeleton of a seat back; and a recliner disposed between the rear portion of the cushion frame and the floor mounting portion with the seat width direction as its axis direction, the recliner having an operating unit that can be operated by an occupant, the recliner allowing the rear portion of the cushion frame to rotate about its own axis relative to the floor mounting portion when the operating unit is operated to be unlocked.

2. A vehicle seat frame as described in claim 1, wherein the operating portion comprises: a recliner lever rotatably attached to the rear portion of the cushion frame or the seatback frame; and an operating force transmission portion which transmits the operating force of the recliner lever to the recliner.

3. A vehicle seat frame as claimed in claim 1 or 2, further comprising a spiral spring arranged coaxially with the recliner and biasing the rear portion of the cushion frame in a direction in which the seatback frame stands up.

4. A vehicle seat frame as claimed in claim 1 or 2, wherein the rear portion of the cushion frame and the seat back frame are integrally connected.

5. A vehicle seat comprising: a seat cushion on which an occupant sits; and a seat back that supports the back of the occupant, wherein the framework of the seat cushion and the seat back is formed by the vehicle seat frame described in claim 1 or 2.

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