Vehicle seats

Abstract

To provide a vehicle seat in which a harness extending from a seat electrical device can be suitably arranged. [Solution] A vehicle seat S includes a seat cushion, a seat back 2, and a seat frame. The vehicle seat also includes a harness 120 that extends downward from a seat electrical device (blower device) provided in the seat back 2 and passes behind the seat cushion. The seat back 2 includes a plate-shaped back cover 50 attached to a back frame 30. A harness passing portion 57 for passing the harness 120 is formed in a lower portion of the back cover 50, and a harness hooking portion 37 for hooking the harness is formed in a lower portion of the back frame 30 (back cover). A portion of the harness passing portion 57 and a portion of the harness hooking portion 37 are located at the same position in the seat width direction.

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat including a seat back, a seat cushion, and a seat frame that supports the seat back and the seat cushion. [Background technology]

[0002] BACKGROUND ART Conventionally, vehicle seats that include a seat back, a seat cushion, a seat frame (back frame, cushion frame), and a seat electrical device have been known (see, for example, Patent Documents 1 and 2). The vehicle seats described in Patent Documents 1 and 2 include electrical components attached to the seat back and a harness connected to the electrical components. The harness extends from the seat back toward the seat cushion and passes behind the rear portion of the seat cushion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2018 / 173938 [Patent Document 2] Japanese Patent Application Publication No. 2019-123298 Summary of the Invention [Problem to be solved by the invention]

[0004] In vehicle seats such as those disclosed in Patent Documents 1 and 2, it has been desired to suitably arrange the linear members (harnesses) extending from the seat device (seat electrical device) provided in the seat body (seat back). For example, there has been a need to prevent interference between a linear member extending from the seat back to the seat cushion and the lower portion of the seat back, particularly when the seat back rotates.

[0005] An object of the present invention is to provide a vehicle seat that allows for suitable placement of a linear member (harness) extending from a seat device (seat electrical device) provided on the seat body. Another object of the present invention is to provide a vehicle seat that can prevent interference between a linear member extending from the seat back to the seat cushion and a lower portion of the seat back. [Means for solving the problem]

[0006] The above problem is solved by the vehicle seat of the present invention, which provides a vehicle seat comprising a seat back, a seat cushion, and a seat frame supporting the seat back and the seat cushion, and which comprises a linear member connected to a seat device provided on the seat back or the seat cushion, extending from the seat device and passing behind a rear portion of the seat cushion, the seat frame having a back frame, and the seat back having a plate-shaped back cover attached to the back frame, a through portion formed in a lower portion of the back cover for passing the linear member therethrough, and a hook portion formed in a lower portion of the back frame or a lower portion of the back cover for hooking the linear member, and a part of the through portion and a part of the hook portion being arranged at the same position in the seat width direction. The above configuration makes it possible to realize a vehicle seat that allows for suitable placement of linear members extending from a seat device provided on the seat body. Specifically, a through-hole is formed in the lower portion of the seat back (back cover) of the vehicle seat to allow the linear member to pass through, thereby preventing interference between the linear member extending from the seat back to the seat cushion and the lower portion of the seat back. Furthermore, a hook portion for hooking a linear member is formed in a lower portion of the back frame (back cover) of the vehicle seat. A portion of the through portion and a portion of the hook portion are disposed at the same position in the seat width direction. This allows for more optimal placement of the linear member extending from the seat device.

[0007] In this case, the seat device is a seat electrical device provided on the seat back, the linear member is a harness connected to the seat electrical device and extending from the seat back toward the seat cushion, the through-hole is formed at the lower end of the back cover, and the hooking portion is provided in the lower part of the back frame, and the harness is hooked on the front or rear surface of the back frame. The above-described configuration can prevent interference between the harness extending from the seat back to the seat cushion and the lower end of the seat back. Also, the hook portion allows the harness to be routed in an appropriate manner.

[0008] In this case, the seat frame includes a cushion frame, and the cushion frame has left and right cushion side frames arranged laterally in the seat width direction, and a rear connecting frame connecting rear portions of the left and right cushion side frames, and the harness extends downward from the seat electrical device, passes through the through-portion, and extends past the rear of the rear connecting frame. With the above configuration, the harness that extends from the seat back to the seat cushion and passes behind the rear portion of the cushion frame (rear connecting frame) can be positioned appropriately.

[0009] In this case, the through portion is a cutout portion formed in the lower end portion of the back cover, and one of the inner surfaces of the through portion in the seat width direction is formed along a direction perpendicular to the width direction of the through portion, and by abutting against the linear member, it is possible to restrict the movement of the linear member in the seat width direction. With the above configuration, the linear member can be inserted into the through-portion (cutout portion), and the movement of the linear member can be restricted by the through-portion.

[0010] In this case, the other inner surface of the through-portion in the sheet width direction may be formed along a direction inclined with respect to the width direction of the through-portion, and may guide the linear member into the interior of the through-portion. With the above configuration, when routing the linear member, it is possible to easily insert the linear member into the through-portion.

[0011] In this case, it is preferable that the inner surface of the through portion on the inside in the sheet width direction is formed along a direction perpendicular to the width direction of the through portion, the inner surface of the through portion on the outside in the sheet width direction is formed along a direction inclined with respect to the width direction of the through portion, and the outer inner surface of the through portion and the hook portion are positioned at the same position in the sheet width direction. With the above-described configuration, the linear member can be easily hooked onto the hooking portion and inserted into the through-portion, which means that the linear member can be suitably positioned.

[0012] In this case, the seat frame has a cushion frame, and the seat cushion has a plate-shaped base cover attached to the cushion frame and supporting the seated occupant from below, a padding material attached to the upper surface of the base cover, and a cover material covering the base cover and the padding material, and the rear end of the base cover and a part of the through-portion are positioned so as to overlap when viewed from above the seat, and the linear member passes through the through-portion and extends behind the rear end of the base cover. With the above-described configuration, the seat back and the seat cushion can be arranged compactly while still ensuring a passage for extending the linear member from the seat back to the seat cushion. In other words, the seat back and the seat cushion can be assembled as close as possible to each other.

[0013] In this case, the seat includes a reclining device that rotatably connects the seat back to the seat cushion, an outer reclining cover that covers the reclining device from the outside in the seat width direction, and an inner reclining cover that covers the reclining device from the inside in the seat width direction, and the through portion is preferably positioned inside the inner reclining cover in the seat width direction. The above configuration can prevent interference between the linear member and the reclining cover (inner reclining cover).

[0014] In this case, the back frame has left and right side frames arranged laterally in the seat width direction, and a lower frame connecting the lower portions of the left and right side frames, and the lower frame has a recess formed therein for passing the linear member, and the through portion and the recess are arranged in a position where they overlap when viewed from above, and the linear member passes through the recess and the through portion and extends behind the rear portion of the seat cushion. As described above, by forming the relief portion in the back frame (lower frame), it is possible to prevent interference between the linear member and the back frame.

[0015] In this case, the through portion is formed at the lower end of the back cover, and a reinforcing portion that protrudes from the surface of the back cover is formed in the portion of the back cover adjacent to the through portion, and the reinforcing portion preferably extends along the direction in which the through portion is formed. As described above, by providing the reinforcing portion, it is possible to suppress a decrease in rigidity caused by forming the through portion in the seat back (back cover).

[0016] In this case, it is preferable that at least one of the seat back and the seat cushion is detachably attached to the seat frame, and the linear member is attached to the seat back or the seat cushion. With the above configuration, the linear member can be suitably arranged in a configuration in which the seat back (seat cushion) is detachable from the seat frame. [Effects of the Invention]

[0017] According to the present invention, a vehicle seat can be realized in which a linear member extending from a seat device provided on the seat body can be suitably positioned. In particular, interference between the linear member extending from the seat back to the seat cushion and the lower portion of the seat back can be suppressed. Furthermore, according to the present invention, interference between the harness extending from the seat back to the seat cushion and the lower end of the seat back can be suppressed. Furthermore, according to the present invention, a linear member can be inserted into the through-portion (cutout portion), and the movement of the linear member can be restricted by the through-portion. Furthermore, according to the present invention, in the operation of routing a linear member, it is possible to easily insert the linear member into the through-portion. Furthermore, according to the present invention, the operation of hooking the linear member to the hooking portion and inserting the linear member into the through-portion can be easily performed. Furthermore, according to the present invention, the seat back and the seat cushion can be arranged compactly while ensuring a passage for extending the linear member from the seat back to the seat cushion. Furthermore, according to the present invention, interference between the linear member and the reclining cover (inner reclining cover) can be suppressed. Furthermore, according to the present invention, by forming a relief portion in the back frame (lower frame), it is possible to prevent interference between the linear member and the back frame. Furthermore, according to the present invention, by providing the reinforcing portion, it is possible to suppress a decrease in rigidity caused by forming a through portion in the seat back (back cover). Furthermore, according to the present invention, in a configuration in which the seat back (seat cushion) is detachable from the seat frame, the linear member can be suitably arranged. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a perspective view of a vehicle seat according to a first embodiment. [Figure 2] FIG. 2 is a perspective view of the vehicle seat as seen from the rear. [Figure 3] FIG. 2 is an exploded perspective view of a cushion frame and a seat cushion. [Figure 4] FIG. 2 is an exploded perspective view of the back frame and the seat back. [Figure 5] FIG. 2 is an exploded perspective view of a back cover, a back support plate, a padding material, and a seat heater. [Figure 6] FIG. 2 is an exploded perspective view of a headrest frame, a head cover, and a padding material. [Figure 7] FIG. 2 is a perspective view of the first back cover (front back cover) as seen from behind. [Figure 8] FIG. 2 is an exploded perspective view of a back frame and a second back cover (rear back cover). [Figure 9] FIG. 10 is a front view of the second back cover, showing the harness passing portion. [Figure 10] FIG. 2 is a front view of the back frame and the second back cover, showing the harness, the harness passing portion, and the harness hook portion. [Figure 11] FIG. 2 is a side view of the base cover, the back frame, and the second back cover, showing the harness, the harness passing portion, and the harness hook portion. [Figure 12] FIG. 2 is a top view of the base cover, the back frame, and the second back cover, showing the harness, the harness passage portion, and the harness escape portion. [Figure 13] FIG. 2 is a perspective view of the vehicle seat as seen from the rear, showing the harness and the reclining cover. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The present embodiment relates to a "vehicle seat" that allows for suitable placement of a linear member (harness) extending from a seat device (seat electrical device) provided on a seat body. The side of the vehicle seat where the occupant sits relative to the seat back (headrest) is the front side (seat front side), and the side of the seat cushion where the occupant sits is the upper side (seat upper side).

[0020] The vehicle seat S will be described with reference to FIGS. 1, the vehicle seat S is a vehicle seat, for example, a front seat disposed at the front of the vehicle. Note that the vehicle seat S may be a middle seat or a rear seat.

[0021] As shown in Figures 1 and 2, the vehicle seat S includes a seat cushion 1, a seat back 2, a headrest 3, and a seat frame F (cushion frame 10, back frame 30) that supports the seat cushion 1, the seat back 2, and the headrest 3. As shown in Figures 3 to 5, the seat cushion 1 and the seat back 2 are detachably attached to the cushion frame 10 and the back frame 30, respectively. Also, as shown in Figure 6, the headrest 3 is detachably attached to the seat back 2. In other words, the vehicle seat S is also called a "changeable seat" and is a seat in which the seat cushion 1 and the seat back 2 can be detached from the seat frame F as needed and replaced. The combination of the seat cushion 1, the seat back 2 and the headrest 3 is also referred to as the "seat body."

[0022] As shown in Figures 1 and 2, the vehicle seat S includes a rail device 4 that supports the seat body (seat frame F) so that it can move back and forth relative to the vehicle floor, and a reclining device 5 that rotatably connects the seat back 2 (back frame 30) to the seat cushion 1 (cushion frame 10). The vehicle seat S also includes a control device 90 attached to the inside of the seat cushion 1, as shown in FIG. 3, and a blower device 100 and a seat heater 110 each provided inside the seat back 2, as shown in FIG. 5. In addition, the vehicle seat S may be equipped with a height link device that connects the seat body to the vehicle floor (rail device 4) so ​​that it can be raised and lowered, a side support device that protrudes the side portion of the seat body toward the occupant, an airbag device, a vibration device, etc. The control device 90, the blower device 100, and the seat heater 110 correspond to the "seat device" and the "seat electrical device." Movable devices such as the rail device 4 and the reclining device 5 may also be included in the seat device (seat electrical device). The control device 90 may control the operations of the rail device 4 and the reclining device 5 in addition to controlling the operations of the blower device 100 and the seat heater 110.

[0023] As shown in Figures 1 to 3, the seat cushion 1 is a seating portion that supports a seated person (occupant) from below, and includes a base cover 20 that forms the skeleton, a first pad material 1a and a second pad material 1b that are placed on the base cover 20, and a cover material 1c that covers the base cover 20 and the pad materials 1a and 1b. The seat cushion 1 is also called a "cushion module" and is formed by integrating a base cover 20, pad materials 1a and 1b, and a cover material 1c. The base cover 20 (also referred to as a cushion cover) is, for example, a cover made of a resin material (a resin cover), but may also be a metal cover.

[0024] 1, 2, 4, 5, and 7, the seat back 2 is a backrest portion that supports a seated occupant from behind, and includes a first back cover 40 and a second back cover 50 that form the framework, a first pad material 2a and a second pad material 2b that are placed on the front surface of the first back cover, and a cover material 2c that covers the first back cover 40 and the pad materials 2a and 2b. In addition, a back support plate 60 is attached between the first pad material 2a and the second pad material 2b. The seat back 2 is also called a "back module" and is mainly composed of a first back cover 40, padding materials 2a, 2b, and a cover material 2c which are integrated together, and a second back cover 50. The former is assembled to the front of the back frame 30, and the latter is assembled to the rear of the back frame 30, and these are assembled together. The back covers 40 and 50 are covers made of, for example, a resin material (resin covers), but may also be covers made of metal.

[0025] 1, 2, and 6, the headrest 3 is a head portion that supports the head of a seated occupant from behind, and includes a head frame 70 that serves as a skeleton, a head cover 80 attached to the rear surface of the head frame 70, a padding material 3a placed on the front surface of the head frame 70, and a covering material 3b that covers the head frame 70, the head cover 80, and the padding material 3a. The head frame 70 is attached to the upper end of the seat back 2 via a bracket 46. The head cover 80 is, for example, a cover made of a resin material (a resin cover), but may also be a metal cover.

[0026] As shown in Figures 1 and 2, the rail device 4 is arranged between the cushion frame 10 and the vehicle floor in the vertical direction, and is equipped with left and right lower rails 4a that are fixed to the vehicle floor and extend in the fore-and-aft direction of the seat, left and right upper rails 4b that are supported slidably along the lower rails 4a, a locking member 4c that locks the upper rails 4b so that they cannot slide relative to the lower rails 4a, and a rail operating lever (not shown) that releases the locked state of the locking member 4c. A cushion frame 10 (side frame 11) is attached to the top surfaces of the left and right upper rails 4b.

[0027] As shown in Figures 1 and 2, the reclining device 5 includes a reclining body 5a that is driven when rotating the back frame 30, a back rotation shaft 5b, a spiral spring 5c ​​that urges the back frame 30 to rotate forward around the back rotation shaft 5b, and a reclining operation lever (not shown) that is operated to release the locked state of the back frame 30. The reclining body 5a has a known locking mechanism, and the state of the back frame 30 can be switched between a locked state in which it is fixed to the cushion frame 10 and an unlocked state in which it is rotatable relative to the cushion frame 10. The back rotation shaft 5b is supported in the seat width direction on the cushion frame 10 side and the back frame 30 side. One end of the spiral spring 5c ​​is anchored on the cushion frame 10 side, and the other end is anchored on the back frame 30 side. The reclining device 5 is covered from the outside by a reclining cover 6.

[0028] As shown in Figures 2 and 8, the reclining cover 6 is a resin cover and has an outer reclining cover 6a that covers the reclining device 5 from the outside in the seat width direction, and an inner reclining cover 6b that covers the reclining device 5 from the inside in the seat width direction. The inner reclining cover 6b has a reclining cover portion 6ba that faces the reclining main body 5a and covers the reclining main body 5a from the inside, and a shaft cover portion 6bb that faces the back rotation shaft 5b and covers the back rotation shaft 5b from behind. The shaft cover portion 6bb protrudes inward from the inner surface of the reclining cover portion 6ba. The reclining cover 6 (6a, 6b) may be configured as an integrated cover.

[0029] <<Cushion frame, seat cushion (base cover)>> As shown in Figure 3, the cushion frame 10 is made of a rectangular frame-like body and includes side frames 11 arranged on the left and right sides and extending in the fore-and-aft direction of the seat, a plate-shaped pan frame 12 installed in the front portion of each side frame 11, a rear connecting frame 13 connecting the rear portions (rear end portions) of each side frame 11, a plurality of elastic springs 14 hooked onto the pan frame 12 and the rear connecting frame 13 and extending in a snake-like shape in the fore-and-aft direction of the seat, and a support plate 15 supported by the plurality of elastic springs 14. The support plate 15 is a support member that supports the buttocks of a seated occupant and is also called a pressure plate. The support plate 15 is disposed in an area surrounded by the left and right side frames 11, the pan frame 12, and the rear connecting frame 13. The pan frame 12 has cover assembly parts 16 formed on its left and right side portions for assembly to the base cover 20 (assembly parts 24).

[0030] As shown in Figure 3, the base cover 20 is made of a plate-shaped frame body and is arranged on the left and right sides. It has cover side portions 21 that extend in the fore-and-aft direction of the seat, a cover front portion 22 that connects the front portions of each cover side portion 21, and a cover rear portion 23 that connects the rear portions of each cover side portion 21. The cover front portion 22 is formed with left and right assembly portions 24 for assembly to the cushion frame 10 (pan frame 12). The cover rear portion 23 is formed with left and right detachable portions 25 for attachment to and detachment from the cushion frame 10 (rear connecting frame 13). For example, after the detachable portion 25 is attached to the rear connecting frame 13, the base cover 20 is assembled to the cushion frame 10 by assembling the assembly portion 24 to the pan frame 12 (by fastening bolts from above).

[0031] The first padding material 1a is disposed in an area surrounded by the left and right cover side portions 21, the cover front portion 22, and the cover rear portion . The second padding material 1b is placed on the upper surface of the base cover 20 and the first padding material 1a. The cover material 1c covers the base cover 20, the first pad material 1a, and the second pad material 1b from above. The cover terminal portion (outer edge portion) of the cover material 1c is hooked to a cover hook portion provided at the lower end of the outer edge portion of the base cover 20.

[0032] With the above-described configuration, the seat cushion 1 (cushion module) in which the base cover 20, the pad materials 1a, 1b, and the cover material 1c are integrated is detachably assembled to the cushion frame . As shown in FIG. 3, a control device 90 is attached via a bracket to the rear surface of the center portion in the seat width direction of the base cover 20 (cover front portion 22).

[0033] <<Back frame, seat back (back cover)>> As shown in Figure 4, the back frame 30 is a rectangular frame-shaped body and includes back side frames 31 arranged on the left and right sides, an upper frame 32 connecting the upper ends of each back side frame 31, and a lower frame 33 connecting the lower ends of each back side frame 31. The back side frame 31, the upper frame 32, and the lower frame 33 each have a cover assembly portion 34 formed on their outer edge portion for assembly of the first back cover 40 and the second back cover 50. The back frame 30 is sandwiched between a first back cover 40 (front back cover) and a second back cover 50 in the seat front-rear direction, and is assembled to these back covers 40, 50.

[0034] As shown in FIGS. 4 and 8, a frame extension 33a is formed in the center of the lower frame 33 in the seat width direction, bending from the front end of the main body of the lower frame 33 and extending upward. The frame extension 33a is a frame portion that is long in the seat width direction. That is, the lower frame 33 (the central portion of the lower frame 33) is a substantially U-shaped frame in a side view of the seat. 8, a plate bracket 36 extending outward in the seat width direction is fixed to a side portion (left side portion) of the frame extension portion 33a. A harness hook portion 37 for hooking the harness 120 is formed at the extending end of the plate bracket 36. Furthermore, a harness escape portion 38 for passing a harness is formed on the side portion of the lower frame 33. Details will be described later.

[0035] The first back cover 40 is also called a "front back cover" and is made of a plate-like frame body as shown in FIGS. The first back cover 40 includes cover side portions 41 arranged on the left and right sides, an upper cover portion 42 connecting the upper portions of the cover side portions 41, and a lower cover portion 43 connecting the lower portions of the cover side portions 41. That is, an opening 44 is formed in the center portion of the first back cover 40. The cover side portion 41, the cover upper portion 42, and the cover lower portion 43 each have an assembly portion 45 formed on the rear surface thereof for assembly to the back frame 30 (cover assembly portion 34) and the second back cover 50 (assembly portion 55). A bracket 46 for attaching a head frame 70 is fixed to the front surface of the upper end of the cover upper portion 42 .

[0036] A back support plate 60 is attached to the center of the front surface of the first back cover 40 so as to cover the opening 44 . Furthermore, a substantially trapezoidal recess 47 is formed on the front surface of the cover upper portion 42, slightly below the bracket 46. The blower device 100 is stored inside the recess 47 and is positioned so that it does not protrude forward.

[0037] The second back cover 50 is also called a rear back cover, and as shown in FIG. 4, is made of a plate-like frame body. The second back cover 50 includes cover side portions 51 arranged on the left and right sides, an upper cover portion 52 connecting the upper portions of the cover side portions 51, and a lower cover portion 53 connecting the lower portions of the cover side portions 51. That is, an opening 54 is formed in the center of the second back cover 50. The cover side portion 51, the cover upper portion 52, and the cover lower portion 53 each have an assembly portion 55 formed on the front surface thereof for assembly to the back frame 30 (cover assembly portion 34) and the first back cover 40 (assembly portion 45). Furthermore, fitting holes 56 are formed at the lower ends of the left and right cover side portions 51 for fitting the reclining device 5 (reclining main body 5a, back rotation shaft 5b).

[0038] 4, 8 and 9, a harness passage 57 for passing the harness 120 and reinforcing ribs 58 and 59 are formed on the side of the cover lower portion 53. Details will be described later.

[0039] For example, the first back cover 40 and the second back cover 50 are positioned so as to sandwich the back frame 30, and the cover assembly portion 34, the assembly portion 45, and the assembly portion 55 are assembled (by bolting from the rear) to assemble the back covers 40, 50 to the back frame 30.

[0040] As shown in FIG. 5, the back support plate 60 is a support member that supports the back of a seated occupant, and is also called a pressure plate. The back support plate 60 is disposed in the center portion of the front surface of the first back cover 40 , and is disposed at a position lower than the blower device 100 . Plate attachment portions 61 for attachment to the front surface of the first back cover 40 are formed on the left and right side portions of the back support plate 60. The plate mounting portions 61 are mounting holes, and a plurality of them are formed at predetermined intervals in the vertical direction. The back support plate 60 is attached to the front surface of the back frame 30 by fastening bolts from the front while the plate attachment portions 61 and the attachment holes 35 of the back frame 30 are in communication with each other.

[0041] 5, the first pad material 2a is placed on the front surface of the first back cover 40 and the back support plate 60. In addition, a protrusion 2aa that protrudes forward of the seat is formed in the upper part of the first pad material 2a, in a portion that corresponds to the blower device 100. The second padding material 2b is disposed in front of the first padding material 2a. A seat heater 110 is disposed between the first padding material 2a and the second padding material 2b. The skin material 2c covers the first back cover 40, the back support plate 60, the first pad material 2a, the seat heater 110, and the second pad material 2b from the front. The skin terminal portion (outer edge portion) of the skin material 2c is hooked to a skin hook portion provided on the back surface of the outer edge portion of the first back cover 40.

[0042] With the above configuration, the seat back 2 (back module) which integrates the first back cover 40, the back support plate 60, the first pad material 2a, the seat heater 110, the second pad material 2b and the upholstery material 2c is removably assembled to the back frame 30. As shown in FIG. 4, the second back cover 50 is separately assembled to the back frame 30 from the rear so as to be detachable.

[0043] <<Head frame, headrest>> As shown in FIG. 6, the head frame 70 is a frame made of, for example, resin, and includes a frame main body 71 and an outer edge flange 72 that protrudes rearward from the outer edge of the frame main body 71. A back assembly portion 73 for assembly to the first back cover 40 (bracket 46) is formed in the center portion of the frame main body 71. Furthermore, a plurality of cover assembly portions 74 for assembly to a head cover 80 are formed in the frame main body 71 around the back assembly portion 73 . The cover assembly portion 74 is disposed so as to surround the back assembly portion 73 .

[0044] As shown in FIG. 6, the head cover 80 is a frame made of, for example, resin, and includes a cover body 81 and an outer edge flange 82 that protrudes forward from the outer edge of the cover body 81. An opening 83 for passing the back assembly portion 73 and the bracket 46 is formed in the center of the cover body 81. In addition, a plurality of assembly portions 84 for assembly to the head frame 70 are formed in the cover main body 81 around the opening 83 . The assembly portion 84 is disposed so as to surround the opening 83 .

[0045] For example, the head frame 70 and the head cover 80 are butted together and the cover assembly portion 74 and the assembly portion 84 are assembled (fastened with clips), thereby assembling the head frame 70 and the head cover 80 together. Then, the head frame 70 and the first back cover 40 are butted together, and the back assembly portion 73 and the bracket 46 are assembled (by fastening bolts from the front), thereby assembling the head frame 70, the head cover 80, and the first back cover 40.

[0046] The padding 3 a is placed on the front surface of the head frame 70 . The skin material 3b covers the head frame 70 and the head cover 80 from above or from the front. The skin terminal portion (outer edge portion) of the skin material 3b is hooked to a skin hook portion provided on the outer edge portion of the head frame 70 or the head cover 80. The pad material 3a is formed larger than the head frame 70 and the head cover 80, and is disposed so as to protrude downward from the head frame 70 and the head cover 80. A part (lower part) of the pad material 3a is disposed so as to cover the blower device 100.

[0047] With the above configuration, the headrest 3 (head module) in which the head frame 70, the head cover 80, the padding material 3a and the covering material 3b are integrated is detachably assembled to the seat back 2 (first back cover 40).

[0048] <<Seat electrical equipment (seat device)>> Next, the control device 90, the blower device 100, and the seat heater 110 will be described.

[0049] As shown in FIG. 3, the control device 90 is a device that performs overall electrical control of the vehicle seat S, and is, for example, an engine control unit (ECU). The control device 90 is connected to the blower device 100, the seat heater 110 and other seat electrical devices (seat moving devices) via an in-vehicle network. The control device 90 is attached to the rear surface of the central portion of the seat back 2 (base cover 20) via a bracket 91, and is connected to each seat electrical device via a harness.

[0050] The control device 90 determines whether an occupant is seated based on a detection signal output from a detection sensor (not shown), for example, and controls the operation of the blower device 100 and the seat heater 110. Specifically, the control device 90 includes a CPU (processor) as a data arithmetic and control processing device. The information is stored in the ROM and RAM as storage devices, the HDD, and the in-vehicle network. and a communication interface for transmitting and receiving information data.

[0051] As shown in FIG. 5, the blower device 100 is attached to a recess 47 provided in the upper part of the seat back 2 (first back cover 40), and is a device that draws air from the seated occupant side. The blower device 100 may be a device that blows air toward the seated occupant. The blower device 100 comprises a blower body 101, an intake port 102 that draws in air from the seated person side, a duct 103 connected to the blower body 101 and through which air passes, and an exhaust port (not shown) that is connected to the duct 103 and expels the drawn-in air. A harness 120 is electrically connected to the left side portion of the blower device 100 (blower body 101).

[0052] As shown in FIG. 5, the seat heater 110 is a planar heating element that warms the seat back 2, and is arranged between the first pad material 2a and the second pad material 2b, and can warm an occupant who touches the seat back 2. A harness 120 is electrically connected to the lower end of the left side portion of the seat heater 110 .

[0053] <<Harness>> As shown in Figures 5, 7, and 10 to 13, the harness 120 is a linear member that extends downward from the side portion of the blower device 100 and extends further downward along the back surface of the side portion of the seat back 2 (first back cover 40). The harness 120 is divided into a branch harness 121 and a branch harness 122 in the lower portion of the seat back 2 (first back cover 40).

[0054] 5 and 7, the branch harness 121 passes through a harness hole (not shown) from the harness 120 and extends to the front surface of the first back cover 40. Then, the branch harness 121 is connected to the seat heater 110 provided on the front surface of the first back cover 40.

[0055] 7, 11, and 13, the branch harness 122 passes through the lower end of the back frame 30 (first back cover 40) from the harness 120 and extends to the front of the seat. Then, it extends along the bottom surface of the cushion frame 10 (base cover 20) and is connected to the control device 90 provided on the bottom surface of the base cover 20 (cover front portion 22). That is, the harness 120 (branch harness 122) is connected to the blower device 100, extends downward from the blower device 100, and extends from the seat back 2 toward the seat cushion 1. At this time, the branch harness 122 passes behind the rear portion of the seat cushion 1. More specifically, it passes behind the cushion frame 10 (rear connecting frame 13) and extends along the outer periphery of the rear connecting frame 13 toward the front of the seat. Hereinafter, the branch harness 122 will also be referred to as the harness 120.

[0056] As shown in FIG. 13, the harness 120 is arranged at the left and right lateral positions in the seat width direction. The left and right harnesses 120 each extend downward from the blower device 100, but are not particularly limited thereto. For example, the left harness 120 may extend downward from the blower device 100, and the right harness 120 may extend downward from another seat device (such as a side support device or a vibration device).

[0057] <<Harness hook and harness escape area>> As shown in FIGS. 8, 10 and 11, a harness hook portion 37 for hooking the harness 120 is provided on a side portion of the back frame 30 (lower frame 33). As shown in FIG. 12, a harness escape portion 38 for passing the harness is formed in the side portion of the back frame 30 (lower frame 33).

[0058] As shown in FIGS. 10 and 11, the harness hook portion 37 is, for example, a hook clip, and is attached to a plate bracket 36 fixed to the lower frame 33 (frame extension portion 33a). As shown in Figure 10, the plate bracket 36 has a bracket extension portion 36a extending outward in the seat width direction from the frame extension portion 33a, and upper and lower bracket guide portions 36b protruding upward and downward, respectively, from the extending ends of the bracket extension portion 36a. A through hole for assembling the harness hook 37 is formed at the extending end of the bracket extending portion 36a. The bracket guide portion 36b supports the harness 120 from behind and guides the harness 120.

[0059] As shown in FIG. 12, the harness escape portion 38 is formed by cutting out the front end portion of the side portion of the lower frame 33. More specifically, the harness escape portion 38 is formed by cutting out the front end portion of the lower frame 33 in a curved shape. The harness hook portion 37 and the harness escape portion 38 are arranged at positions where they overlap when viewed from above the seat, allowing the harness 120 to be routed in a suitable manner.

[0060] <<Harness passage section>> As shown in FIGS. 8 to 12, a harness passage 57 through which the harness 120 passes is formed in a side portion of the lower end portion (cover lower portion 53) of the second back cover 50. Furthermore, reinforcing ribs 58 and 59 (reinforcing portions) protruding from the front surface of the cover lower portion 53 are formed in a portion of the cover lower portion 53 adjacent to the harness passing portion 57 .

[0061] The harness passage portion 57 is a cutout portion formed by cutting out the front end portion of the side portion of the cover lower portion 53. An inner surface 57a of the harness-passing portion 57 on the inner side in the seat width direction extends linearly toward the rear of the seat. In other words, the inner surface 57a extends along the direction in which the harness-passing portion 57 is formed. Alternatively, the inner surface 57a extends along a direction perpendicular to the width direction of the harness-passing portion 57. The harness 120 comes into contact with the inner surface 57a of the harness passage portion 57, thereby restricting movement of the harness 120 in the seat width direction.

[0062] An inner surface 57b of the harness-passing portion 57 on the outer side in the seat width direction extends linearly in a direction inclined with respect to the seat front-rear direction. In other words, the inner surface 57b extends at an angle with respect to the forming direction of the harness-passing portion 57. Alternatively, the inner surface 57b extends at an angle with respect to the width direction of the harness-passing portion 57. When the harness 120 comes into contact with the inner surface 57b of the harness passing portion 57, the harness 120 is guided into the harness passing portion 57. That is, the harness passing portion 57 (inner surface 57b) can guide the harness 120 therein.

[0063] 9, the first reinforcing rib 58 is a reinforcing portion that protrudes from the front surface of the cover lower portion 53 and extends in the front-rear direction of the seat. In other words, the first reinforcing rib 58 extends in the direction in which the harness passing portion 57 is formed. The second reinforcing rib 59 is connected to the first reinforcing rib 58 and extends along the seat width direction. In other words, the second reinforcing rib 59 extends in a direction intersecting (perpendicular to) the first reinforcing rib 58. As shown in FIG. 9, the harness passage portion 57 is disposed at a position surrounded by a first reinforcing rib 58 and a second reinforcing rib 59.

[0064] In the above configuration, as shown in Figures 5, 7, and 10 to 13, the harness 120 extends downward from the blower device 100, passes through the harness escape portion 38 and the harness passage portion 57, and extends past the rear of the rear connecting frame 13. Therefore, the harness 120, which extends from the seat back 2 to the seat cushion 1 and passes behind the rear portion of the cushion frame 10 (rear connecting frame 13), can be suitably positioned.

[0065] In the above configuration, as shown in FIGS. 10 to 12, the harness escape portion 38, the harness hook portion 37, and the harness passage portion 57 are arranged at the same position in the seat width direction. More specifically, the harness escape portion 38 and the harness passage portion 57 are arranged at positions where they overlap when viewed from above the seat. Also, a portion (inner surface 57b) of the harness passage portion 57 and a portion of the harness hook portion 37 are arranged at positions where they overlap when viewed from above the seat. This allows for more suitable placement of the harness 120 extending from the blower device 100. Also, the harness 120 can be easily hooked to the harness hook portion 37 and inserted into the harness escape portion 38 and the harness passage portion 57.

[0066] 12, the rear end of the base cover 20 (rear cover portion 23) and a part of the harness passage portion 57 are arranged in a position where they overlap when viewed from above the seat. In other words, they are not completely overlapped. The harness 120 passes through the harness passage 57 and extends behind the rear end of the base cover 20 . Therefore, the seat back 2 and the seat cushion 1 can be arranged compactly while ensuring a passage for extending the harness 120. In other words, the seat back 2 and the seat cushion 1 can be connected as close as possible to each other.

[0067] In the above configuration, as shown in FIG. 13, the harness passage portion 57 is disposed inside the inner reclining cover 6b (axis cover portion 6bb) in the seat width direction. Therefore, interference between the harness 120 and the reclining cover 6 (inner reclining cover 6b) can be prevented.

[0068] The vehicle seat S allows for the suitable placement of a harness extending from a seat electrical device (blower device) provided in the seat body (seat back). In particular, interference between the harness extending from the seat back to the seat cushion and the lower portion of the seat back can be prevented.

[0069] <Method for manufacturing vehicle seats> Next, a method for manufacturing the vehicle seat S will be described with reference to FIGS. In addition, in the method for manufacturing the vehicle seat S, explanation of manufacturing steps other than those described below will be omitted.

[0070] First, the seat cushion 1 (cushion module), the seat back 2 (back module), and the seat frame F (cushion frame 10, back frame 30) are prepared. The seat back 2 has a first back cover 40, a second back cover 50, a first padding material 2a, a second padding material 2b, and a cover material 2c. A back support plate 60 is attached between the first padding material 2a and the second padding material 2b.

[0071] Then, seat electrical equipment (for example, a control device 90, a blower device 100, and a seat heater 110) is installed inside the seat cushion 1 and the seat back 2. Then, the seat cushion 1 is attached to the cushion frame 10. Furthermore, the seat back 2 is attached to the back frame 30. The seat cushion 1 and the seat back 2 are detachable from the seat frame F.

[0072] Then, the harness 120 extending from the seat electrical device is routed. Specifically, the harness 120 is connected to the blower device 100, extends downward from the blower device 100, and extends from the seat back 2 toward the seat cushion 1. At this time, the harness 120 (branched harness 122) passes behind the rear portion of the seat cushion 1. More specifically, it passes behind the cushion frame 10 (rear connecting frame 13) and extends toward the front of the seat along the outer periphery of the rear connecting frame 13.

[0073] At this time, the harness 120 is routed so that the harness 120 is hooked onto the harness hooking portion 37 formed on the side portion of the back frame 30 (lower frame 33). The harness 120 is routed so that it passes through a harness passage 57 formed in a side portion of the lower end portion (cover lower portion 53) of the second back cover 50. A portion of the harness passing portion 57 and a portion of the harness hook portion 37 are disposed at the same position in the seat width direction.

[0074] The above manufacturing method makes it possible to manufacture a vehicle seat in which the harness extending from the seat electrical device provided in the seat back can be suitably arranged.

[0075] <Other embodiments> In the above embodiment, as shown in Figs. 3 and 4, the seat cushion 1 and the seat back 2 are detachably attached to the cushion frame 10 and the back frame 30, respectively, but this is not particularly limited. For example, only the seat cushion 1 may be detachably attached to the cushion frame 10. Alternatively, only the seat back 2 may be detachably attached to the back frame 30. Alternatively, the seat cushion 1 and the seat back 2 may be fixed to the cushion frame 10 and the back frame 30, respectively.

[0076] In the above embodiment, as shown in Figs. 3 and 4, the seat cushion 1 and the seat back 2 are respectively configured by a cushion module and a back module, but this is not limited to this. For example, the seat cushion 1 (seat back 2) may have a padding material and a covering material, or the seat cushion 1 (seat back 2) may have a cushion frame (back frame), a padding material, and a covering material.

[0077] In the above embodiment, as shown in Figures 10 to 13, the harness hook portion 37, the harness escape portion 38, and the harness passing portion 57 are used to route the harness 120 extending from the blower device 100, but this is not particularly limited. For example, the harness hook portion 37, the harness escape portion 38, and the harness passage portion 57 may be used to route a harness extending from another seat device (seat electrical device). Alternatively, the hook portion 37, the escape portion 38, and the passage portion 57 may be used to route a linear member such as a cable extending from a seat moving device.

[0078] In the above embodiment, as shown in FIGS. 10 to 12, the harness hook portion 37 and the harness escape portion 38 are formed in the lower portion of the back frame 30, but this is not limited to this. For example, the harness hook portion and the harness escape portion may be formed in the lower portion of the seat back 2 (the first back cover 40 and the second back cover 50). Alternatively, the harness hook portion and the harness escape portion may be formed in the rear end portion of the cushion frame 10 or the rear end portion of the base cover 20.

[0079] In the above embodiment, as shown in FIGS. 10 to 12, the harness passing portion 57 is formed in the lower portion (lower end portion) of the second back cover 50, but this is not particularly limited. For example, the harness passing portion may be formed in the lower portion of the first back cover 40, or may be formed in the lower portion of the back frame 30. Alternatively, the harness passing portion may be formed in the rear end portion of the cushion frame 10, or may be formed in the rear end portion of the base cover 20.

[0080] In the above embodiment, a vehicle seat (automobile seat) was described as a specific example, but it is not limited to this and can also be used as a seat for vehicles such as trains, buses, airplanes, ships, etc.

[0081] In the above embodiment, the vehicle seat according to the present invention has been mainly described. However, the above embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and the present invention naturally includes equivalents thereof. [Explanation of symbols]

[0082] First Embodiment S Vehicle seat (vehicle seat) Front seat frame 1 Seat cushion (cushion module) 1a First pad material 1b Second pad material 1c Skin material 2 Seat back (back module) 2a First pad material 2aa Convex part 2b Second pad material 2c Skin material 3 Headrest 3a padding material 3b Skin material 4 Rail device 4a Lower rail 4b Upper rail 4c Locking member 5 Reclining device 5a Reclining unit 5b Back rotation axis 5c spiral spring 6 Reclining cover 6a Outer reclining cover 6b Inner reclining cover 6ba Reclining cover 6bb shaft cover 10 Cushion Frame 11 Side frame 12 Pan Frame 13 Rear connecting frame 14 Elastic spring (elastic member) 15 Support Plate 16 Cover assembly part 20 Base cover (cushion cover) 21 Cover side part 22 Front part of cover 23 Rear part of cover 24 Assembly section 25 Detachable part 30 Back Frame 31 Backside Frame 32 Upper frame 33 Lower frame 33a Frame extension 34 Cover assembly part 35 mounting holes 36 Plate bracket 36a Bracket extension 36b Bracket guide part 37 Harness hook (hook) 38 Harness escape (escape) 40 1st back cover (front back cover, back cover) 41 Cover side part 42 Upper part of cover 43 Lower part of cover 44 Opening 45 Assembly section 46 Bracket (head assembly bracket) 47 Recess 50 Second back cover (rear back cover) 51 Cover side part 52 Upper part of cover 53 Lower part of cover 54 Opening 55 Assembly section 56 Fitting hole (recliner fitting hole) 57 Harness passage (passing part, notch) 57a, 57b inner surface 58 First reinforcing rib (reinforcement part) 59 Second reinforcing rib (reinforcement part) 60 Back support plate (pressure plate) 61 Plate mounting part 70 Head Frame 71 Frame body 72 Outer flange 73 Back assembly part 74 Cover assembly part 80 Headcover 81 Cover body 82 Outer flange 83 Opening 84 Assembly section 90 Control device 91 Bracket 100 Blower device (seat electrical device, seat device) 101 Blower body 102 Intake port 103 Duct 110 Seat heater 120 harness (first linear member) 121 Branch harness 122 Branch harness

Claims

1. A vehicle seat including a seat back, a seat cushion, and a seat frame supporting the seat back and the seat cushion, a linear member connected to a seat device provided on the seat back or the seat cushion, extending from the seat device and passing behind a rear portion of the seat cushion; The seat frame has a back frame, the seat back has a plate-shaped back cover attached to the back frame, a through-hole for passing the linear member is formed in a lower portion of the back cover; a hook portion for hooking the linear member is formed in a lower portion of the back frame or a lower portion of the back cover; A vehicle seat, wherein a portion of the through-portion and a portion of the hooking portion are disposed at the same position in the seat width direction.

2. The seat device includes a seat electrical device provided in the seat back, The linear member is a harness connected to the seat electrical device and extending from the seat back toward the seat cushion, The through-hole is formed at a lower end of the back cover, 2. The vehicle seat according to claim 1, wherein the hooking portion is provided in a lower portion of the back frame, and hooks the harness on a front surface or a rear surface of the back frame.

3. The seat frame includes a cushion frame, the cushion frame includes left and right cushion side frames disposed laterally in the seat width direction, and a rear connecting frame connecting rear portions of the left and right cushion side frames, 3. The vehicle seat according to claim 2, wherein the harness extends downward from the seat electrical device, passes through the through-portion, and extends behind the rear connecting frame.

4. The through-hole is a notch formed in a lower end portion of the back cover, A vehicle seat as described in any one of claims 1 to 3, characterized in that one inner surface of the through-hole in the seat width direction is formed along a direction perpendicular to the width direction of the through-hole, and abuts against the linear member to restrict movement of the linear member in the seat width direction.

5. The vehicle seat according to claim 4, characterized in that the other inner surface of the through-hole in the seat width direction is formed along a direction inclined with respect to the width direction of the through-hole, and guides the linear member into the interior of the through-hole.

6. an inner surface of the through-hole on the inner side in the sheet width direction is formed along a direction perpendicular to the width direction of the through-hole, an inner surface of the through-hole on the outer side in the sheet width direction is formed along a direction inclined with respect to the width direction of the through-hole, 6. The vehicle seat according to claim 5, wherein an inner surface of the outer side of the through-hole and the latch portion are disposed at the same position in the seat width direction.

7. The seat frame has a cushion frame, The seat cushion includes a plate-shaped base cover attached to the cushion frame and supporting a seated occupant from below, a padding material attached to an upper surface of the base cover, and a cover material covering the base cover and the padding material, a rear end portion of the base cover and a portion of the through-portion are disposed at a position where they overlap with each other in a top view of the seat; 4. The vehicle seat according to claim 1, wherein the linear member passes through the through-portion and extends behind the rear end of the base cover.

8. a reclining device that rotatably connects the seat back to the seat cushion; an outer reclining cover that covers the reclining device from the outside in the seat width direction, and an inner reclining cover that covers the reclining device from the inside in the seat width direction, 4. The vehicle seat according to claim 1, wherein the through-portion is disposed inward of the inner reclining cover in the seat width direction.

9. The back frame includes left and right side frames disposed laterally in the seat width direction, and a lower frame connecting lower portions of the left and right side frames, The lower frame is formed with a recess for allowing the linear member to pass therethrough, The through portion and the relief portion are arranged at positions where they overlap in a top view, 4. The vehicle seat according to claim 1, wherein the linear member passes through the recess and the through-portion and extends behind a rear portion of the seat cushion.

10. The through-hole is formed at a lower end of the back cover, a reinforcing portion protruding from a surface of the back cover is formed in a portion of the back cover adjacent to the through portion; 4. The vehicle seat according to claim 1, wherein the reinforcing portion extends in a direction in which the through-hole is formed.

11. At least one of the seat back and the seat cushion is detachably attached to the seat frame, 4. The vehicle seat according to claim 1, wherein the linear member is attached to the seat back or the seat cushion.

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