Vehicle seat

Abstract

To provide a vehicle seat that can improve covering force to a temperature control member.SOLUTION: A vehicle seat includes a seat cushion 1. The seat cushion 1 has a cushion frame 10, a pad material 11 arranged on the cushion frame 10, a temperature adjustment member 14 that adjusts a temperature of a seating surface of the seat cushion 1, and a temperature control member 15 that controls a temperature of the temperature adjustment member 14. The cushion frame 10 has a first side frame and a second side frame 10b that are arranged to be separated from each other in a seat width direction, and a rear frame 10c that connects a rear portion of the first side frame and a rear portion of the second side frame 10b. The temperature control member 15 is arranged between the rear frame 10c and the pad material 11 in a longitudinal direction. At least a part of the temperature control member 15 is arranged at a position overlapping the rear frame 10c in the longitudinal direction in a vertical direction.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat provided with a seat cushion. [Background technology]

[0002] Conventionally, a seat cushion having a seat heater and a temperature control member (specifically, a thermostat) for controlling the seat heater has been known for a vehicle seat such as a car. For example, Patent Document 1 discloses a vehicle seat in which the seat heater is disposed on the upper surface of a pad material and the thermostat is disposed in a front portion of the pad material. A recess is formed in the front portion of the pad material, and the thermostat is disposed in the recess.

[0003] Furthermore, for example, Patent Document 2 discloses a vehicle seat in which a seat heater is disposed on the upper surface of a padding material and a thermostat is disposed in the rear portion of the padding material. The seat heater and thermostat are attached to the upholstery material. The thermostat is covered from the rear by a covering member sewn to the upholstery material. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-079365 [Patent Document 2] Japanese Patent Application Publication No. 2018-176847 Summary of the Invention [Problem to be solved by the invention]

[0005] In Patent Document 1, the thermostat is placed in a recess to reduce surface irregularities and improve appearance. However, if the thermostat is placed in the front part of the padding as in Patent Document 1, there is a risk that the lower legs of the seated person will come into contact with the thermostat, subjecting the thermostat to external force. Patent Document 1 also describes that the thermostat may be placed on the seat surface, bottom surface, or side surface of the seat back. However, in any of these locations, there is a risk that the weight of the seat occupant or external force may be applied to the thermostat.

[0006] In addition, in Patent Document 2, the thermostat is located at the rear of the padding and is covered from behind with a covering member, thereby minimizing the influence of the external environment around the seat. However, in Patent Document 2, the covering member is made of foamed resin, synthetic fiber, resin film, etc., so there is a risk that the thermostat will be subjected to external forces from behind. In particular, there is a risk that the thermostat will be subjected to kicking forces from passengers sitting in the rear seats or collision forces from items stored in the luggage compartment.

[0007] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a vehicle seat that can improve the covering force for a temperature control member. [Means for solving the problem]

[0008] The problem is solved by a vehicle seat having a seat cushion, the seat cushion having a cushion frame, a padding material disposed on the cushion frame, a temperature adjustment member disposed on the padding material and adjusting the temperature of the seating surface of the seat cushion, and a temperature control member connected to the temperature adjustment member and controlling the temperature of the temperature adjustment member, the cushion frame having first and second side frames disposed apart in the seat width direction, and a rear frame connecting rear portions of the first side frames and second side frames, the temperature control member being disposed between the rear frame and the padding material in the fore-and-aft direction, and at least a portion of the temperature control member being disposed in a position overlapping the rear frame in the up-and-down direction in the fore-and-aft direction.

[0009] With the above-described configuration, the temperature control member is positioned between the padding and the rear frame and is covered from behind by the rear frame, thereby providing adequate protection against external forces, particularly preventing the temperature control member from being subjected to kicking forces from rear seat occupants or impact forces from items stored in the luggage compartment. Therefore, the covering power for the temperature control member can be improved.

[0010] In this case, it is preferable that the upper end of the temperature control member is disposed below the upper end of the rear frame and above the lower end of the rear frame. With the above configuration, it is possible to further prevent external forces and loads from being transmitted from behind and above to the temperature control member.

[0011] In this case, a storage recess for storing the temperature control member is formed at the rear end of the pad material, the temperature control member is arranged so as to be inclined inside the storage recess, and the lower end of the temperature control member is arranged forward of the upper end of the temperature control member. With the above configuration, the temperature control member is placed in the accommodation recess, which further reduces the load and external force applied to the temperature control member. Also, since the temperature control member is placed at an angle, it is possible to further reduce the force transmitted to the temperature control member when a passenger in the rear seat kicks up from below.

[0012] In this case, the seat cushion may have a skin material covering the pad material, a portion of the skin material being positioned rearward of the rear frame, and the temperature adjustment member may be fixed to the pad material. With this configuration, the temperature control member is fixed to the padding material rather than the skin material, so even if the skin material is pulled and moved by a load or external force, the temperature control member does not move with the skin material, and the relative position of the temperature control member and the rear frame does not change, thereby further improving the covering ability of the rear frame for the temperature control member.

[0013] In this case, the seat cushion has a skin material covering the pad material, and a hanging groove is formed on the upper surface of the pad material for hanging the skin material onto the pad material, and the upper end of the temperature control member is positioned in a position that overlaps the hanging groove in the vertical direction and the front-to-rear direction. With the above-described configuration, the temperature control member is disposed at a position different from the hanging groove in the front-rear direction, thereby making it possible to make the pad material more compact in the thickness direction.

[0014] In this case, the seat cushion has a skin material covering the pad material, and a hanging groove is formed on the upper surface of the pad material for hanging the skin material onto the pad material, and the temperature control member is preferably positioned below an imaginary line connecting the upper end of the rear frame and the lower end of the hanging groove. With the above configuration, it is possible to prevent external forces and loads, particularly from above, from being transmitted to the temperature control member.

[0015] In this case, the cushion frame has a front frame connecting the front portion of the first side frame and the front portion of the second side frame, and the temperature control member is preferably positioned below an imaginary line connecting the upper end of the rear frame and the upper end of the front frame. With the above configuration, it is possible to prevent external forces and loads, particularly from above, from being transmitted to the temperature control member.

[0016] In this case, the seat back is provided with a seat back and a reclining device that rotatably connects the seat back to the seat cushion, the seat back having a back frame that is connected to the cushion frame via the reclining device, the reclining device switches the seat back between a normal state in which an occupant can be seated and a reclined state in which the seat back is rotated rearward from the normal state, and when the seat back is in the normal state, the temperature control member is preferably positioned forward of the front end of the seat back. With the above configuration, it is possible to further suppress the transmission of external forces, particularly from behind, to the temperature control member.

[0017] In this case, the cushion frame has a front frame connecting the front portion of the first side frame and the front portion of the second side frame, the seat cushion is spanned between the rear frame and the front frame and has a pressure-receiving member for supporting the pad material, the rear portion of the pressure-receiving member is positioned between the pad material and the rear frame in the front-to-rear direction, and at least a portion of the temperature control member is positioned in a position that overlaps in the front-to-rear direction with the rear frame and the rear portion of the pressure-receiving member in the up-and-down direction. With the above-described configuration, the temperature control member is further covered with the pressure-receiving member, so that the application of load or external force to the temperature control member can be further suppressed.

[0018] In this case, the seat cushion has a skin material that covers the pad material and a cover member that is attached to the skin material and covers the temperature control member, a portion of the skin material is positioned rearward of the rear frame, and the cover member is positioned between the pad material and the rear frame in the front-to-rear direction and extends from the rear end of the pad material to the underside, covering the temperature control member from behind and below. With the above-mentioned configuration, the temperature control member is further covered with a cover member, which further reduces the load and external force applied to the temperature control member. In addition, because the cover member extends to the underside of the padding, it is possible to further reduce the force transmitted to the temperature control member when a passenger in the rear seat kicks up from below. [Effects of the Invention]

[0019] According to the present invention, the covering force for the temperature control member can be improved. Furthermore, according to the present invention, it is possible to further prevent external forces and loads from being transmitted from behind and above to the temperature control member. Furthermore, the present invention can further reduce the load and external force applied to the temperature control member, and can further reduce the force transmitted to the temperature control member when a rear seat occupant kicks up from below. Furthermore, according to the present invention, the covering force of the rear frame on the temperature control member can be further improved. Furthermore, according to the present invention, the pad material can be made compact in the thickness direction. Furthermore, according to the present invention, it is possible to prevent external forces and loads from being transmitted from above to the temperature control member. Furthermore, according to the present invention, it is possible to further suppress the transmission of external forces from behind to the temperature control member. Furthermore, according to the present invention, it is possible to further suppress the application of loads and external forces to the temperature control member. Furthermore, according to the present invention, it is possible to further prevent the force generated when a person sitting in the rear seat kicks up from below from being transmitted to the temperature control member. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view of a vehicle seat according to a first embodiment; [Figure 2] 2 is a cross-sectional view taken along the line AA in FIG. 1. [Figure 3] FIG. 2 is a perspective view of the seat cushion with the padding removed. [Figure 4] FIG. 1 is a side view of a vehicle seat. [Figure 5] FIG. 6 is a cross-sectional view of a vehicle seat according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the following description, the "front-rear direction" refers to the front-rear direction of the vehicle seat, which is the direction that coincides with the direction of travel of the vehicle when it is traveling. The "seat width direction" refers to the width direction of the vehicle seat, which is the direction that coincides with the left-right direction as seen by an occupant seated in the vehicle seat. The "up-down direction" refers to the up-down direction of the vehicle, which is the direction that coincides with the vertical direction when the vehicle is traveling on a horizontal plane.

[0022] First Embodiment A vehicle seat S of a first embodiment will be described with reference to FIGS. As shown in Fig. 1, the vehicle seat S is a seat placed on the vehicle floor and in which a vehicle occupant sits. In this embodiment, the vehicle seat S is used as a front seat corresponding to the front seat of the vehicle. However, the vehicle seat S is not limited to this, and may also be a rear seat of the vehicle, or may be used as a middle seat in the second row or a rear seat in the third row in a vehicle having three rows of seats in the longitudinal direction.

[0023] As shown in Figure 1, the vehicle seat S includes a seat cushion 1, a seat back 2, a headrest 3 connected to the upper portion of the seat back 2, and a reclining device 4 that rotatably connects the seat back 2 to the seat cushion 1. 2, the vehicle seat S includes a rail device 5 that supports the seat body so that it can move in the front-to-rear direction relative to the vehicle floor, and a height link device 6 that connects the seat body so that it can move up and down relative to the rail device 5. The vehicle seat S may also include movable devices such as side support devices that protrude the sides of the seat body toward the seat occupant, a vibration device, a blower device, etc.

[0024] As shown in FIGS. 3 and 4, the seat cushion 1 is a seating portion that supports an occupant from below, and is provided with a cushion frame 10 inside the seat cushion, which serves as a framework. As shown in FIG. 4, the seat back 2 is a backrest portion that supports the back of the occupant from behind, and is provided with a back frame 20 inside the seat back that serves as a framework. As shown in FIG. 4, the headrest 3 is a head support that supports the head of an occupant from behind, and is provided with a headrest pillar 30 inside as a framework.

[0025] <<Seat cushion>> As shown in Figures 2 and 3, the seat cushion 1 has a cushion frame 10 consisting of a substantially rectangular frame-shaped body, a padding material 11 placed on the cushion frame 10, a skin material 12 covering the padding material 11, a pressure-receiving member 13 for supporting the padding material 11, a temperature adjustment member 14 for adjusting the temperature of the seating surface of the seat cushion 1, and a temperature control member 15 for controlling the temperature of the temperature adjustment member 14. The temperature adjusting member 14 is connected to a power source and a control device via a harness.

[0026] As shown in FIG. 3, the cushion frame 10 has a first side frame 10a and a second side frame 10b arranged at a distance in the seat width direction, a rear frame 10c connecting the rear portion of the first side frame 10a and the rear portion of the second side frame 10b, a front frame 10d connecting the front portion of the first side frame 10a and the front portion of the second side frame 10b, and a plate-shaped pan frame 10e spanning the front portion of the first side frame 10a and the front portion of the second side frame 10b.

[0027] The first side frame 10a and the second side frame 10b are plate-shaped frames that are long in the front-rear direction of the seat, as shown in Fig. 3. The first side frame 10a and the second side frame 10b have flanges formed at their upper and lower ends that bend and protrude inward in the seat width direction. As shown in Fig. 4, a reclining device 4 is attached to the rear portions of the first side frame 10a and the second side frame 10b via a connecting bracket 10f. Also, as shown in Fig. 2, a rail device 5 is attached to the lower portions of the first side frame 10a and the second side frame 10b via a height link device 6.

[0028] As shown in Fig. 3, the rear frame 10c is a pipe-shaped frame that extends longitudinally in the seat width direction and has a circular cross section. A pressure-receiving member 13 is hooked to the center of the rear frame 10c in the seat width direction. In addition, link members 6a of the height link device 6 are attached to both end portions of the rear frame 10c in the seat width direction. The front frame 10d is a pipe-shaped frame that extends longitudinally in the seat width direction and has a circular cross section. A pressure-receiving member 13 is hooked to the center of the front frame 10d in the seat width direction.

[0029] The pan frame 10e is a plate-shaped erection frame that supports the thighs of an occupant, as shown in Fig. 3. The side portions of the pan frame 10e in the seat width direction are placed on the upper flanges of the first side frame 10a and the second side frame 10b.

[0030] The padding 11 is a cushioning member made of urethane foam or the like. As shown in FIG. 2, a storage recess 11b for storing a temperature control member 15 is formed in the rear end portion 11a of the padding 11. The storage recess 11b is a recess formed so as to recess forward from the rear end surface of the padding 11. The storage recess 11b is provided in the center of the padding 11 in the thickness direction (i.e., the vertical direction) and the center of the seat width direction, and is formed in a position overlapping with the rear frame 10c in a front view. In other words, the storage recess 11b and the rear frame 10c are disposed at the same height position. The bottom surface of the accommodating recess 11b is formed at the rear end 11a of the padding 11 so as to be inclined with respect to the vertical direction. That is, when the temperature control member 15 is attached to the accommodating recess 11b, the temperature control member 15 is disposed at an incline with respect to the vertical direction.

[0031] In addition, a plurality of hanging grooves are formed on the upper surface of the padding 11 for hanging the cover material 12 into the padding 11. More specifically, the padding 11 has a rear hanging groove 11c disposed near the accommodation recess 11b and a front hanging groove 11d disposed forward of the rear hanging groove 11c. The cover material 12 and the temperature adjustment member 14 are disposed in each hanging groove.

[0032] As shown in Fig. 2, the cover material 12 is made of a stretchable nylon material or the like, and is formed into a shape that can cover the pad material 11. More specifically, the cover material 12 covers the front end portion 11e of the pad material 11 from the front, and covers the upper surface of the pad material 11 from above. In addition, as shown in Fig. 4, the cover material 12 covers the side surfaces of the pad material 11 from the sides. 2, the cover material 12 extends in the vertical direction so as to cover the rear frame 10c from the rear, and covers the lower surface of the pad material 11 from below. In other words, a part of the cover material 12 (specifically, the rear part of the cover material 12) is disposed rearward of the rear frame 10c and extends from the rear frame 10c to the bottom surface of the pressure-receiving member 13.

[0033] An engaging member (for example, a clip not shown) for attaching the cover material 12 to the pad material 11 is sewn to the front end of the cover material 12. The cover material 12 is attached to the pad material 11 by engaging the engaging member with an engaged member not shown provided at the front end 11e of the pad material 11. The engaging member provided at the rear end of the cover material 12 is attached to the bottom surface of the pressure-receiving member 13. The rear end of the cover material 12 may be attached to the rear end 11a of the pad material 11. The cover material 12 is formed by sewing multiple fabric materials together inside the hanging groove. A fastening member (such as a clip (not shown)) for hanging the cover material 12 into the hanging groove is sewn to the sewn end of the cover material 12, and the cover material 12 is attached to a fastening member (not shown) provided inside the hanging groove. The method of attaching the cover material 12 to the pad material 11 is not limited to a member such as a clip, and can be selected as appropriate.

[0034] 3, the pressure-receiving member 13 is a plate-shaped elastic support member that supports the buttocks of a seated occupant. The pressure-receiving member 13 spans between the rear frame 10c and the front frame 10d, and bends up and down in response to (i.e., following) the movement of the seated occupant. The pressure-receiving member 13 has a rear hook portion 13a hooked to the rear frame 10c, a plate-shaped rear portion 13b on which the rear hook portion 13a is provided, a central portion 13c extending forward from the rear portion 13b along the underside of the padding material 11, a front portion 13d extending forward from the central portion 13c while sloping upward, and a front hook portion 13e provided on the front portion 13d and hooked to the front frame 10d. The rear portion 13b slopes downward toward the front and extends along the rear end surface of the rear end portion 11a of the padding material 11. As shown in FIG. 2, the rear portion 13b is disposed between the temperature adjustment member 14 and the rear frame 10c in the front-to-rear direction.

[0035] The temperature adjustment member 14 is a seat heater that adjusts the temperature of the seating surface of the seat cushion 1. The temperature adjustment member 14 is a planar heating element that warms the seat body, and is attached to the inside of the seat cushion 1 as shown in Fig. 1. More specifically, the temperature adjustment member 14 is arranged on the upper surface of the pad material 11 and on the rear end surface of the rear end portion 11a, and is attached between the pad material 11 and the cover material 12 as shown in Fig. 2. A temperature measurement sensor (not shown) is provided on the temperature adjustment member 14. The temperature measurement sensor is a thermistor that measures the temperature of the temperature adjustment member 14 and outputs an output signal based on the measurement result of the heater temperature to a control device. The control device corresponds to an ECU (Electronic Control Unit), and receives the output signal detected by the temperature measurement sensor and compares the heater temperature with a set value to control the supply of electricity from the power source to each heater wire.

[0036] The temperature control member 15 is a thermal thermostat connected to the temperature adjustment member 14 and controls the temperature of the temperature adjustment member 14. The temperature control member 15 maintains the heater temperature below a certain level by cutting off the supply of electricity to the temperature adjustment member 14 (specifically, the heater wire) when the heater temperature exceeds a predetermined value. In this embodiment, the temperature adjustment member 14 is a heater for warming the seating surface, but the temperature adjustment member 14 may be configured to include a heating element (e.g., a heater) for warming the seating surface and a cooling element (e.g., a Peltier element) for cooling the seating surface. In this case, the temperature adjustment member 14 switches the heating element and the cooling element ON / OFF according to the temperature detected by the thermistor and a preset target temperature, thereby operating to bring the temperature of the seating surface of the seat cushion 1 closer to the preset target value.

[0037] 2, the temperature control member 15 is attached to the inner surface of the rear end portion of the temperature control member 14 and is disposed at the rear end 11a of the padding 11. Specifically, the temperature control member 15 is disposed so as to be inclined in the vertical direction inside the accommodating recess 11b. More specifically, the lower end 15a of the temperature control member 15 is disposed forward of the upper end 15b of the temperature control member 15. In this way, since the temperature control member 15 is disposed inside the accommodation recess 11b, it is possible to further prevent loads and external forces from being applied to the temperature control member 15. In addition, since the temperature control member 15 is disposed at an angle, it is possible to further prevent force from being transmitted to the temperature control member 15 when a person sitting in the rear seat kicks up from below.

[0038] <<Seat back>> 3, the seat back 2 has a back frame 20 formed of a substantially rectangular frame-like body, a back pad material 21 arranged on the back frame 20, and a back covering material 22 covering the back pad material 21. The back frame 20 is connected to the cushion frame 10 via a reclining device 4.

[0039] <<Reclining device>> The reclining device 4 is a device that rotatably connects the back frame 20 to the cushion frame 10 and is capable of locking the back frame 20. 4, the reclining device 4 switches the seat back 2 between a normal state in which an occupant can be seated and a reclined state in which the seat back 2 is rotated rearward from the normal state. The reclining device 4 can switch the state of the back frame 20 between a locked state in which the back frame 20 is fixed to the cushion frame 10 and an unlocked state in which the back frame 20 is rotatable relative to the cushion frame 10.

[0040] <<Rail device>> The rail device 5 is disposed between the seat body and the vehicle floor in the vertical direction and is fixed to the vehicle floor. As shown in Fig. 2, the rail device 5 has left and right lower rails 5a extending in the front-rear direction of the seat and left and right upper rails 5b supported slidably along the lower rails 5a. A cushion frame 10 is mounted on the upper surfaces of the left and right upper rails 5b via height link devices 6.

[0041] <<Height link device>> As shown in FIG. 2, the height link device 6 is attached between the rail device 5 and the cushion frame 10, and has left and right link members 6a disposed on the front side of the seat. When a height control lever (not shown) is operated, the link member 6a rotates, causing the seat body to rise and fall, thereby adjusting the seat height. The height link device 6 may be manually operated using the height control lever, or may be automatically operated by being driven by a motor.

[0042] <<Location of temperature control components>> Here, the positional relationship between the temperature control member 15 and other members of the vehicle seat S will be described. The temperature control member 15 is placed in a storage recess 11b formed in the rear end 11a of the padding 11. At this time, the temperature control member 15 is placed between the rear frame 10c and the padding 11 in the front-to-rear direction, as shown in Fig. 2. At least a portion of the temperature control member 15 is placed in a position that overlaps with the rear frame 10c in the front-to-rear direction in the up-down direction. In other words, the temperature control member 15 and the rear frame 10c are placed so as to overlap in a front view and are at the same height. In this way, the temperature control member 15 is disposed between the padding 11 and the rear frame 10c and is covered from behind by the rear frame 10c. This allows the temperature control member 15 to be appropriately protected from external forces. In particular, it is possible to prevent the temperature control member 15 from being transmitted to the kicking force of a passenger sitting in the rear seat or the impact force of items stored in the luggage compartment.

[0043] 2, the upper end 15b of the temperature control member 15 is disposed below the upper end of the rear frame 10c and above the lower end of the rear frame 10c. In particular, the temperature control member 15 is disposed so as to be inclined in the vertical direction inside the accommodating recess 11b. Therefore, at least the upper end portion 15b of the temperature control member 15 is covered by the rear frame 10c, so that the transmission of external forces and loads to the temperature control member 15 from behind and above can be suppressed.

[0044] 2, at least a portion of the temperature control member 15 is disposed in a position where it overlaps with the rear frame 10c and the pressure-receiving member 13 in the front-rear direction in the vertical direction. Specifically, the upper end portion 15b of the temperature control member 15 is disposed in a position where it overlaps with the rear frame 10c and the rear portion 13b of the pressure-receiving member 13 in the front-rear direction in the vertical direction. In other words, the upper end portion 15b of the temperature control member 15, the rear frame 10c, and the rear portion 13b of the pressure-receiving member 13 are disposed so as to overlap in a front-front view and are at the same height. In other words, the upper end portion 15b of the temperature control member 15 is covered from behind by the temperature adjustment member 14, the rear portion 13b of the pressure-receiving member 13, the rear frame 10c, and the covering material 12, in that order. In this way, the temperature control member 15 is covered not only by the rear frame 10c but also by the pressure-receiving member 13, which further reduces the load and external force applied to the temperature control member 15. Furthermore, since the rear frame 10c and the pressure-receiving member 13 are covered by the skin material 12, the protection and design of the rear frame 10c can be improved.

[0045] 2, the upper end 15b of the temperature control member 15 is positioned so as to overlap the hanging groove in the front-rear direction in the vertical direction. Specifically, the upper end 15b of the temperature control member 15 is positioned above an imaginary line L1 that extends rearward, perpendicular to the vertical direction, from the bottom surface of the rear hanging groove 11c, which is positioned rearward among the multiple hanging grooves. In other words, the upper end 15b of the temperature control member 15 and the bottom surface of the rear hanging groove 11c are positioned so as to overlap in a front view. In this way, the temperature control member 15 is disposed at a position different from the hanging groove in the front-to-rear direction, thereby realizing compactness in the thickness direction of the padding material 11. In particular, of the multiple hanging grooves, the rear hanging groove 11c disposed near the temperature control member 15 is disposed so as to overlap with the temperature control member 15, thereby enabling the thickness of the rear end portion 11a of the padding material 11 to be compact.

[0046] 2, the temperature control member 15 is disposed below an imaginary line L2 connecting the upper end of the rear frame 10c and the lower end of the rear hanging groove 11c. The temperature control member 15 is also disposed below an imaginary line L3 connecting the upper end of the rear frame 10c and the upper end of the front frame 10d. In this way, the temperature control member 15 is disposed at a position away from the upper surface of the pad material 11, so that the transmission of external forces and loads, particularly from above, to the temperature control member 15 can be suppressed.

[0047] As shown in FIG. 2, the lower end 15a of the temperature control member 15 is disposed below the upper end of the front frame 10d and above the lower end of the front frame 10d. In this way, the temperature control member 15 is disposed at a position away from the lower surface of the pad material 11, and therefore, transmission of external forces, particularly from below, to the temperature control member 15 can be suppressed.

[0048] As shown in FIG. 2, the temperature control member 15 is disposed below the upper end of the front frame 10d and above the lower end of the front frame 10d. In this way, the temperature control member 15 is disposed at a position away from the lower surface of the pad material 11, and therefore, transmission of external forces, particularly from below, to the temperature control member 15 can be suppressed.

[0049] 2, the temperature control member 15 is covered from below by the skin material 12 and the pressure-receiving member 13. Specifically, the temperature control member 15 is arranged so as to overlap the rear end of the skin material 12 and the central portion 13c of the pressure-receiving member 13 in a side view. In this way, since the temperature control member 15 is covered from below by the skin material 12 and the pressure-receiving member 13, it is possible to suppress the transmission of external forces, particularly from below, to the temperature control member 15.

[0050] 2, the temperature control member 15 is disposed at the rear end 11a of the padding 11, and is positioned so as to overlap the pan frame 10e in the front-to-rear direction. Therefore, since the temperature control member 15 is disposed at a position separated from the pan frame 10e at the same height as the pan frame 10e, the weight of the occupant can be effectively prevented from being transmitted to the temperature control member 15.

[0051] The temperature adjustment member 14 is not fixed to the covering material 12 but to the padding material 11. More specifically, the temperature adjustment member 14 is attached to the upper surface of the padding material 11, with a portion attached inside the rear hanging groove 11c and the front hanging groove 11d. For example, if the temperature adjustment member 14 is fixed to the covering material 12 and the covering material 12 is pulled and moved by the weight of the seat occupant or an external force, the temperature control member 15 will move along with the covering material 12. This will cause the temperature control member 15 to move together with the temperature adjustment member 14, potentially making it impossible to position the temperature control member 15 in an appropriate position. However, in this embodiment, the temperature control member 14 is fixed to the padding material 11 rather than the covering material 12, so even if the covering material 12 is pulled and moved by a load or external force, the temperature control member 15 does not move following the covering material 12, and therefore the relative positions of the temperature control member 15, the rear frame 10c, the front frame 10d, and the pressure-receiving member 13 do not change. Therefore, the covering ability of the rear frame 10c for the temperature control member 15 can be further improved.

[0052] 4, when the seat back 2 is in the normal state (i.e., when the seat back 2 is not tilted rearward), the temperature control member 15 is disposed forward of the front end 2a of the seat back 2. For example, when the seat back 2 is tilted rearward, the force of a kick from a passenger sitting in the rear seat or a collision force from items stored in the luggage compartment is not easily transmitted to the rear end of the seat cushion 1. However, when the seat back 2 is in the normal state, such external force may be easily transmitted to the rear end of the seat cushion 1. In this way, since the temperature control member 15 is disposed forward of the front end 2a of the seat back 2, the transmission of external forces to the temperature control member 15, particularly from behind, can be further suppressed.

[0053] Second Embodiment A vehicle seat S2 according to a second embodiment of the present invention will be described below with reference to Fig. 5. Note that descriptions of configurations that overlap with those of the vehicle seat S described above will be omitted.

[0054] The vehicle seat S2 includes a seat cushion 101 that supports the buttocks of a seated occupant. The seat cushion 101 has a cover member 16 that covers a temperature control member 15 disposed on a pad material 11. Note that the cushion frame 10, pad material 11, skin material 12, pressure-receiving member 13, temperature adjustment member 14, and temperature control member 15 in the seat cushion 101 are configured in the same manner as those in the seat cushion 1, and therefore description thereof will be omitted.

[0055] 5, the cover member 16 is a covering member that covers the temperature control member 15, and is a sheet made of, for example, nonwoven fabric, woven fabric, felt, urethane synthetic resin, or the like. The cover member 16 is made of a highly insulating material and can suppress the dissipation of heat near the temperature control member 15. Furthermore, by covering the temperature control member 15 with the cover member 16, it is possible to make it less susceptible to the effects of the outside air temperature, etc., and the temperature adjustment member 14 can be controlled appropriately. The cover member 16 is attached to the skin 12. More specifically, the upper end of the cover member 16 is sewn to the rear portion of the skin 12. The lower end of the cover member 16 is attached to the lower surface of the padding 11 with a clip member (not shown). The cover member 16 is disposed between the padding 11 and the rear frame 10c in the front-to-rear direction, and extends from the rear end 11a of the padding 11 to the lower surface. In other words, the cover member 16 covers the temperature control member 15 from the rear and below.

[0056] 5, the rear portion 13b of the pressure-receiving member 13 is disposed between the cover member 16 and the rear frame 10c in the front-rear direction. At least a portion of the temperature control member 15 is disposed in a position overlapping the rear frame 10c, the pressure-receiving member 13, and the cover member 16 in the up-down direction. In other words, the upper end portion 15b of the temperature control member 15 is covered from behind by the temperature adjustment member 14, the cover member 16, the rear portion 13b of the pressure-receiving member 13, the rear frame 10c, and the skin material 12, in that order. In this way, the temperature control member 15 is covered not only by the rear frame 10c but also by the cover member 16 and the pressure-receiving member 13, which further reduces the load and external force applied to the temperature control member 15. Furthermore, because the rear frame 10c and the pressure-receiving member 13 are covered by the skin material 12, the protection and design of the rear frame 10c can be improved.

[0057] <Manufacturing method> The manufacturing method of the vehicle seat S is as follows: Note that, in the manufacturing method of the vehicle seat S, explanation of manufacturing steps other than those described below will be omitted.

[0058] The manufacturing method of the vehicle seat S includes a preparation process of preparing each component part of the seat cushion 1, an assembly process of assembling each component part of the seat cushion 1, and an assembly process of assembling the seat cushion 1 and the seat back 2.

[0059] More specifically, in the preparation step, the worker first prepares the cushion frame 10, the padding material 11, the covering material 12, the pressure-receiving member 13, the temperature adjustment member 14, and the temperature control member 15. The worker prepares the cushion frame 10 by connecting the first side frame 10a and the second side frame 10b with the rear frame 10c and the front frame 10d, and bridging the pan frame 10e between the first side frame 10a and the second side frame 10b.

[0060] Then, in the assembly process, the worker attaches the pressure-receiving member 13 to the cushion frame 10. Specifically, the worker hooks the rear hook portion 13a of the pressure-receiving member 13 to the rear frame 10c and the front hook portion 13e to the front frame 10d. The worker also fixes the temperature adjustment member 14 and the temperature control member 15 to the pad material 11. Specifically, the worker places the temperature adjustment member 14 on the upper surface of the pad material 11 while inserting the temperature adjustment member 14 into the hanging groove of the pad material 11. Then, the worker places the temperature control member 15 in the accommodation recess 11b.

[0061] The worker then places the padding 11, to which the temperature adjustment member 14 and temperature control member 15 are attached, on the cushion frame 10 and pressure-receiving member 13. At this time, the worker assembles the padding 11 to the cushion frame 10 and pressure-receiving member 13 so that the temperature control member 15 is positioned between the rear frame 10c and the padding 11 in the front-to-rear direction. The worker also positions at least a portion of the temperature control member 15 (specifically, the upper end 15b of the temperature control member 15) in a position that overlaps with the rear frame 10c in the front-to-rear direction. Thereafter, the worker covers the padding 11 and the rear frame 10c with the covering material 12. Specifically, the worker hangs the covering material 12 into the hanging groove of the padding 11, and covers the front and upper surfaces of the padding 11 with the covering material 12. Then, the worker attaches the covering material 12 to the bottom surface of the pressure-receiving member 13 so as to cover the rear of the rear frame 10c. In this manner, the seat cushion 1 is manufactured.

[0062] In the assembling process, the worker connects the seat cushion 1 and the seat back 2 via the reclining device 4. Specifically, the worker assembles the back frame 20 of the seat back 2 to the cushion frame 10 of the seat cushion 1 via the reclining device 4. In this manner, the vehicle seat S is manufactured.

[0063] By the above-described method for manufacturing the vehicle seat S, the covering force for the temperature control member 15 can be improved.

[0064] In the above embodiment, a vehicle seat for an automobile or the like has been described as a specific example, but the present invention is not limited to this and can be used for various seats such as two-wheeled vehicle seats, vehicle seats for trains and buses, vehicle seats for airplanes and ships, as well as office chairs for work, wheelchairs, and child seats in shopping carts.

[0065] In this 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]

[0066] S, S2 vehicle seats 1. 101 seat cushion 2 seat backs 2a front end 3 Headrest 4 Reclining device 5 Rail device 5a Lower rail 5b Upper Rail 6 Height link device 6a Link member 10 Cushion Frame 10a First side frame 10b Second side frame 10c rear frame 10d Front Frame 10e Pan Frame 10f Connecting Bracket 11 Pad material 11a Rear end 11b Receiving recess 11c Rear hanging groove 11d Front hanging groove 11e Front end 12 Skin material 13 Pressure-receiving member 13a Rear latch 13b Posterior part 13c central part 13d front part 13e Front latch 14 Temperature control materials 15 Temperature control components 15a Lower end 15b Upper end 16 Cover member 20 Back Frame 21 Back pad material 22 Back cover material 30 Headrest pillar

Claims

1. A vehicle seat having a seat cushion, The seat cushion is Cushion frame and a padding material disposed on the cushion frame; a temperature adjusting member disposed on the pad material and adjusting the temperature of the seating surface of the seat cushion; a temperature control member connected to the temperature adjustment member and controlling the temperature of the temperature adjustment member; The cushion frame is a first side frame and a second side frame arranged to be spaced apart in a seat width direction; a rear frame connecting a rear portion of the first side frame and a rear portion of the second side frame, the temperature control member is disposed between the rear frame and the padding in the front-rear direction, The vehicle seat, wherein at least a portion of the temperature control member is disposed at a position where it overlaps with the rear frame in the longitudinal direction in the up-down direction.

2. 2. The vehicle seat according to claim 1, wherein an upper end of the temperature control member is disposed below an upper end of the rear frame and above a lower end of the rear frame.

3. A recess for accommodating the temperature control member is formed in the rear end of the pad material, the temperature control member is disposed in the accommodating recess so as to be inclined, 3. The vehicle seat according to claim 1, wherein a lower end of the temperature control member is disposed forward of an upper end of the temperature control member.

4. The seat cushion has a cover material that covers the pad material, a portion of the skin material is disposed rearward of the rear frame, 3. The vehicle seat according to claim 1, wherein the temperature adjusting member is fixed to the padding.

5. The seat cushion has a cover material that covers the pad material, a hanging groove for hanging the cover material onto the pad material is formed on the upper surface of the pad material; 3. The vehicle seat according to claim 1, wherein an upper end of the temperature control member is arranged at a position that overlaps with the hanging groove in the front-rear direction.

6. The seat cushion has a cover material that covers the pad material, a hanging groove for hanging the cover material onto the pad material is formed on the upper surface of the pad material; 3. The vehicle seat according to claim 1, wherein the temperature control member is disposed below an imaginary line connecting an upper end of the rear frame and a lower end of the hanging groove.

7. the cushion frame includes a front frame connecting a front portion of the first side frame and a front portion of the second side frame, 3. The vehicle seat according to claim 1, wherein the temperature control member is disposed below an imaginary line connecting an upper end of the rear frame and an upper end of the front frame.

8. Seat back and a reclining device that rotatably connects the seat back to the seat cushion, the seat back has a back frame connected to the cushion frame via the reclining device, the reclining device switches the seat back between a normal state in which a passenger can sit and a reclined state in which the seat back is rotated rearward from the normal state, 3. The vehicle seat according to claim 1, wherein the temperature control member is disposed forward of a front end of the seat back when the seat back is in the normal state.

9. the cushion frame includes a front frame connecting a front portion of the first side frame and a front portion of the second side frame, the seat cushion has a pressure-receiving member that is bridged between the rear frame and the front frame and that supports the pad material, a rear portion of the pressure-receiving member is disposed between the pad material and the rear frame in the front-rear direction; 3. The vehicle seat according to claim 1, wherein at least a portion of the temperature control member is disposed at a position that overlaps in the longitudinal direction with the rear frame and the rear portion of the pressure-receiving member in the vertical direction.

10. The seat cushion is a skin material covering the padding material; a cover member attached to the skin material and covering the temperature control member, a portion of the skin material is disposed rearward of the rear frame, The vehicle seat according to claim 1 or 2, characterized in that the cover member is arranged between the pad material and the rear frame in the fore-and-aft direction, extends from the rear end of the pad material to the underside, and covers the temperature control member from behind and below.

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