WO2014049755A1 - 車両用シート - Google Patents
車両用シート Download PDFInfo
- Publication number
- WO2014049755A1 WO2014049755A1 PCT/JP2012/074799 JP2012074799W WO2014049755A1 WO 2014049755 A1 WO2014049755 A1 WO 2014049755A1 JP 2012074799 W JP2012074799 W JP 2012074799W WO 2014049755 A1 WO2014049755 A1 WO 2014049755A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support member
- occupant
- occupant support
- frame
- pan frame
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/68—Seat frames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/4249—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats fixed structures, i.e. where neither the seat nor a part thereof are displaced during a crash
- B60N2/4256—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats fixed structures, i.e. where neither the seat nor a part thereof are displaced during a crash the shape of the seat being specially adapted for a particular purpose or for particular vehicles
- B60N2/4263—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats fixed structures, i.e. where neither the seat nor a part thereof are displaced during a crash the shape of the seat being specially adapted for a particular purpose or for particular vehicles with anti-submarining systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/62—Thigh-rests
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/64—Back-rests or cushions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/64—Back-rests or cushions
- B60N2/646—Back-rests or cushions shape of the cushion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/68—Seat frames
- B60N2/686—Panel like structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
- B60N2/7094—Upholstery springs
Definitions
- the present invention relates to a vehicle seat, and more particularly, to a vehicle seat that has a followability to the body of an occupant and is excellent in a seating feeling.
- a seat cushion that supports an occupant's buttocks and thighs is formed by placing a cushion pad on a cushion frame and covering the skin.
- various proposals have been made to improve the seating feeling of the occupant.
- a technique for improving the seating feeling of the seat cushion for example, a technique for attenuating vibration transmitted from a vehicle body is known (for example, Patent Document 1).
- the seat cushion described in Patent Document 1 includes a substantially rectangular plate-shaped pan frame serving as a skeleton, and a plurality of elastic springs that connect the rear portion of the pan frame in the left-right direction.
- the front part of the pan frame is a position that supports the thigh of the occupant to be seated and is formed in a flat plate shape
- the rear part is a position that supports the buttocks of the occupant and includes a recess that is recessed downward. It becomes the composition.
- the elastic spring is disposed above the recess that supports the occupant's buttocks, and is disposed at a height substantially the same as the front portion of the pan frame. Therefore, this seat cushion can obtain a good cushion property due to the elastic deformation of the elastic spring and the cushion pad, and can relieve the vibration transmitted from the vehicle body as the vehicle travels.
- the seat cushion as in Patent Document 1 is configured such that the front portion of the pan frame and the elastic spring are on the same horizontal plane, the elastic spring is a plate-shaped pan when the occupant is seated. This would sink more than the front part of the frame, which could give the seated occupant a feeling of strangeness. Therefore, there has been a demand for a seat cushion that further improves the seating feeling while maintaining the high followability of the elastic spring to the seated occupant. At the same time, there has been a demand for a vehicle seat that is further reduced in weight and size in consideration of the arrangement of the pan frame and the elastic spring.
- the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a vehicle seat that has high followability to a seated occupant and further improves the seating feeling. Another object of the present invention is to provide a vehicle seat that is light and compact and has a good seating feeling.
- the subject includes a seat cushion having a cushion frame serving as a skeleton, and the cushion frame connects a side frame disposed on the left and right sides and a front portion of the side frame.
- a occupant support member that connects the side frames at the rear of the pan frame, and the occupant support member is disposed so as to incline backward with respect to a horizontal plane, and is disposed in front of the occupant support member.
- the end portion is provided above the rear end portion of the pan frame, and a thigh support portion for supporting a thigh portion of a seated occupant is provided at the center in the left-right direction of the pan frame.
- the occupant support member is disposed so as to incline backward with respect to the horizontal plane, and the front end portion of the occupant support member is provided above the rear end portion of the pan frame, so that the occupant is seated.
- the urging force of the occupant support member tilted backward provides high followability to the occupant's buttocks, and the amount of sinking in the vertical direction of the occupant support member is taken into account, and the pan frame and the occupant support member are It is possible to provide a vehicle seat that can suppress a vertical shift and improve a seating feeling.
- a thigh support portion that supports the thigh of a seated occupant is provided at the center in the left-right direction of the pan frame, and the thigh support portion is closer to the occupant support member than the left and right ends of the pan frame in the front-rear direction.
- the thigh support part of the pan frame supports the occupant's thigh
- the occupant support member supports the occupant's buttocks
- the thigh support part and the occupant support The front-rear distance between the members is reduced. Therefore, the stress of the seating load is not concentrated on the occupant support member, but the stress is distributed to the pan frame and the occupant support member, so that the seating feeling can be further improved.
- the occupant support member is a first occupant support member disposed on the pan frame side in the front-rear direction, and the cushion frame connects the side frames and is rearward of the first occupant support member. It is preferable that the first occupant support member has a smaller amount of vertical deflection with respect to a load applied when the occupant is seated than the second occupant support member. Thus, since the first occupant support member has a smaller amount of vertical deflection with respect to the load applied when the occupant is seated than the second occupant support member, when the occupant is seated, the seat load by the occupant's buttocks is greater.
- the first occupant support member and the second occupant support member have a wave shape that is curved at a predetermined pitch in the front-rear direction, and the pitch of the first occupant support member is equal to that of the second occupant support member. It may be larger than the pitch.
- the pitch of the first occupant support member is larger than the pitch of the second occupant support member, the first occupant support member has a smaller amount of vertical deflection than the second occupant support member. Accordingly, the first occupant support member with a small amount of flexure is arranged at a substantially central portion of the cushion frame where a seating load by the occupant's buttocks is small, and the seating feeling can be further improved.
- the first occupant support member and the second occupant support member are made of elastic springs, and the first occupant support member has a large diameter among the first occupant support member and the second occupant support member. good.
- the diameter of the first occupant support member is large, the first occupant support member has the smallest amount of vertical deflection. Accordingly, the first occupant support member having the smallest amount of bending is disposed in the substantially central portion of the cushion frame where the seating load by the occupant's buttocks is small, and the seating feeling can be further improved.
- a flange that protrudes downward from the rear end portion is preferably provided at a rear end portion that extends toward the occupant support member among the thigh support portions.
- the flange projecting downward is provided at the rear end portion of the thigh support member, the rigidity of the rear end portion of the thigh support portion can be increased while maintaining the seating feeling of the occupant.
- a flange protrudes below interference with the passenger
- a concave portion recessed downward is provided between the left and right directions of the thigh support portion. Since it is constituted in this way, when an occupant sits down, the impact given to a crotch part of an occupant can be eased, and a seating feeling can be improved further.
- the cushion frame includes a frame connecting member that connects the rear portions of the left and right side frames, and the first occupant support member and the second occupant support member are located above the upper surface of the frame connection member. It should be provided.
- the first occupant support member and the second occupant support member are provided above the upper surface of the connecting member, these occupant support members are disposed close to the occupant's buttocks seated in the vertical direction. As a result, the followability to the passenger can be further improved. Further, since the cushion pad provided above the occupant support member is thin, the seat can be reduced in weight and size.
- the front end portion of the first occupant support member and the rear end portion of the second occupant support member are above the plane formed by the rear end portion of the pan frame and the upper surface of the frame connecting member. Therefore, the occupant support member is disposed in the vicinity of the buttocks of the occupant seated in the vertical direction, and can improve the followability to the occupant. In addition, the seat will be lighter and more compact.
- the occupant support member is disposed so as to incline backward with respect to the horizontal plane, and the front end portion of the occupant support member is provided above the rear end portion of the pan frame.
- the urging force of the occupant support member tilted backward provides high followability to the occupant's buttocks and the amount of sinking in the vertical direction of the occupant support member, taking into account the pan frame when seated Further, it is possible to provide a vehicle seat that can suppress the vertical displacement of the occupant support member and improve the seating feeling.
- a thigh support portion that supports the thigh of a seated occupant is provided at the center in the left-right direction of the pan frame, and the thigh support portion is closer to the occupant support member than the left and right ends of the pan frame in the front-rear direction.
- the thigh support part of the pan frame supports the occupant's thigh
- the occupant support member supports the occupant's buttocks
- the thigh support part and the occupant support The front-rear distance between the members is reduced. Therefore, the stress of the seating load is not concentrated on the occupant support member, but the stress is distributed to the pan frame and the occupant support member, so that the seating feeling can be further improved.
- the first occupant support member since the first occupant support member has a smaller amount of vertical deflection with respect to the load applied when the occupant is seated than the second occupant support member, when the occupant is seated, the buttock of the occupant
- the second occupant support member having a large amount of flexure is disposed in the portion on the rear side of the cushion frame to which a large seating load is applied, and has high followability to the occupant to be seated, thereby further improving the seating feeling.
- the pitch of the first occupant support member since the pitch of the first occupant support member is larger than the pitch of the second occupant support member, the first occupant support member is bent more vertically than the second occupant support member. Becomes smaller.
- the first occupant support member with a small amount of flexure is arranged at a substantially central portion of the cushion frame where a seating load by the occupant's buttocks is small, and the seating feeling can be further improved.
- crew support member is large, the amount of bending of the up-down direction with respect to a passenger
- the flange projecting downward is provided at the rear end portion of the thigh support member, the rigidity of the rear end portion of the thigh support portion is increased while maintaining the seating feeling of the occupant. be able to. Moreover, since a flange protrudes below, interference with the passenger
- the first occupant support member and the second occupant support member are provided above the upper surface of the connecting member, these occupant support members are the buttock of the occupant seated in the vertical direction. Therefore, the followability with respect to the occupant can be further improved. Further, since the cushion pad provided above the occupant support member is thin, the seat can be reduced in weight and size. According to the eighth aspect of the present invention, the occupant support member is disposed in the vicinity of the buttocks of the occupant seated in the up-and-down direction, and can improve the followability to the occupant, leading to weight reduction and compactness of the seat.
- FIG. 1 is a schematic perspective view of a vehicle seat according to the present invention. It is a schematic perspective view of the cushion frame concerning the present invention. It is a schematic plan view of the cushion frame concerning the present invention. It is a schematic plan view of the cushion frame which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the position where a passenger
- This embodiment includes a pan frame that supports the thigh of the occupant and an occupant support member that supports the buttocks, and the front end of the occupant support member that tilts backward is disposed above the rear end of the pan frame.
- the present invention relates to an invention of a vehicle seat characterized in that a front-rear distance between an occupant support member and a pan frame is short.
- the vehicle seat S of the present embodiment includes a seat back 1, a headrest 2 disposed on the upper surface side of the seat back 1, and a seat cushion 3 disposed on the front side of the seat back 1. It is mainly composed.
- the side on which the occupant is seated with respect to the seat back 1 of the vehicle seat S is the front side.
- the seat back 1 is a backrest portion that supports the back of the occupant from the rear, and is configured by placing a cushion pad 1a on a seat back frame (not shown) serving as a skeleton and covering with a skin 1b.
- the headrest 2 is a head that supports the head of an occupant from the rear, and is configured by placing a cushion pad 2a on a pillar (not shown) serving as a core material and covering with a skin 2b.
- the seat cushion 3 is a seating portion that supports an occupant from below, and is configured such that the cushion pad 3a is placed on the cushion frame 10 that is a skeleton shown in FIG. Has been.
- the cushion frame 10 is formed of a substantially rectangular frame serving as a skeleton of the seat cushion 3, and as shown in FIG. 2, left and right side frames 11 disposed at both left and right ends, and rear portions of the side frames 11.
- Mainly includes a frame connecting member 12 installed, a plate-like pan frame 20 installed on the upper surface of the front portion of each side frame 11, and an occupant support member 40 connecting the approximate center of each side frame 11 in the front-rear direction. It is configured.
- the side frame 11 is made of a sheet metal member extending in the front-rear direction, and the left side frame 11 and the right side frame 11 are separated in the left-right direction in a state of being parallel to each other.
- a frame connecting member 12 extending in the left-right direction is connected and fixed to the left and right inner side surfaces of the rear portion of the side frame 11.
- the frame connecting member 12 is composed of a pipe member having a substantially circular vertical cross section, and is disposed behind the occupant support member 40 and is configured to penetrate substantially the center in the vertical direction of the left and right side frames 11.
- the pan frame 20 is made of a substantially rectangular metal frame that supports the thigh of the occupant, and has an upper surface that is substantially flat.
- the left and right end portions 21 of the pan frame 20 include a bent portion 22 that is bent downward at the front portion, and a side flange portion 23 that protrudes downward from a substantially central portion to the rear portion.
- the bent portion 22 is hooked on the upper surface of the front portion of each side frame 11, and is fixedly joined to be connected.
- the rear end portion of the pan frame 20 includes a rear flange portion 24 that protrudes downward from the rear end portion in the left-right direction.
- the rear flange portion 24 is formed by extending between the left and right end portions 21 in the left-right direction.
- tip of the back flange part 24 of this embodiment protrudes below, it is not limited to this, For example, it is good also as a shape bent to the front side. If it does in this way, while being able to improve the rigidity of the rear end part of pan frame 20, it becomes the arrangement which controls interference with crew member support member 40.
- the center part of the left-right direction of the pan frame 20 includes a convex part 25 that protrudes upward at the front part, and an inclined part 26 that slopes downward from the approximate center toward the rear part.
- the convex portion 25 has a substantially U shape and is formed to extend in the left-right direction.
- the inclined portion 26 has a substantially rectangular shape, and is formed to extend rearward from the left and right end portions 21 of the pan frame 20 as shown in FIG. Specifically, the rear end portion of the inclined portion 26 extends rearward so as to incline from the left and right sides toward the center.
- the inclined portion 26 includes a pair of thigh support portions 27 that support the left and right thigh portions of a seated occupant, and a recessed portion 30 that is recessed downward between the left and right thigh support portions 27.
- the thigh support portion 27 has a substantially rectangular shape with a flat upper surface, and is disposed so as to tilt backward with respect to the horizontal plane. As shown in FIG. 3, the thigh support portion 27 is formed to extend rearward from the left and right end portions 21, so that the front-rear distance between the thigh support portion 27 and the occupant support member 40 is reduced. Therefore, the stress of the seating load is not concentrated on the occupant support member 40, but the stress is distributed to the pan frame 20 and the occupant support member 40, and the seating feeling can be further improved.
- the concave portion 30 has a substantially rectangular shape, is disposed at a position corresponding to the crotch portion of the seated occupant, and is formed to extend in the front-rear direction.
- the concave portion 30 includes an inclined portion 31 and a bottom surface portion 32 provided continuously on the rear side of the inclined portion 31, and the inclined portion 31 is rearward from the front so as to be inclined lower than the thigh support portion 27.
- the bottom surface portion 32 is formed as a horizontal plane.
- the bottom surface portion 32 is provided with a plurality of substantially rectangular hole portions 33 penetrating in the vertical direction, and the hole portions 33 are formed as holes for attaching other members such as a harness.
- the shape of the hole 33 is not limited to a substantially rectangular shape, and may be changed as appropriate. One hole 33 may be provided.
- the recessed part 30 of this embodiment is comprised from the inclination part 31 and the bottom face part 32, if it is equipped with the shape which can relieve the impact given to the crotch part of the seated passenger
- the concave portion 30 may be formed in a substantially rectangular shape so as to be a horizontal plane, or a continuous portion of the concave portion 30 and the left and right thigh support portions 27 may be chamfered.
- the connection part which connects the left and right thigh support parts 27 so that the upper part of the recessed part 30 may be straddled may be provided separately.
- the rigidity of the rear end portion of the pan frame 20 can be increased by providing the connecting portion separately.
- the inclined portion 26 includes a substantially rectangular hole 34 penetrating vertically between the left and right thigh support portions 27, and the rear ends of the left and right thigh support portions 27. You may provide the connection part 35 which connects a part.
- the hole 34 is formed in a substantially rectangular shape, but is not limited thereto, and may be formed in a circular shape, an elliptical shape, a polygonal shape, or the like.
- the connecting portion 35 extends in the left-right direction, is joined to the rear end portion of the thigh support portion 27, and is configured as a member that reinforces the thigh support portion 27.
- the connecting portion 35 is provided with a flange portion (not shown) that protrudes downward, and is configured to increase rigidity and suppress interference with the occupant support member 40.
- the one connection part 35 of this embodiment is provided, multiple may be provided.
- the occupant support member 40 is an elastic spring that supports an occupant's buttocks seated via a cushion pad 3a, and is formed of a wave-shaped linear member called an S spring or a zigzag spring.
- a plurality of occupant support members 40 are arranged at a predetermined interval between the pan frame 20 and the frame connecting member 12 and extend so as to be substantially parallel to the left-right direction. Further, the occupant support member 40 is formed to be bent at a predetermined pitch in the front-rear direction.
- crew support member 40 of this embodiment consists of elastic springs, it is not limited to this, You may use elastic bodies, such as elastic rubber, instead.
- the occupant support member 40 includes a first occupant support member 41 disposed on the pan frame 20 side in the front-rear direction and a second occupant support member 42 disposed behind the first occupant support member 41.
- the occupant support member 40 is connected to the left and right side frames 11 by hooking the left and right ends to the inner side surfaces of the left and right side frames 11.
- the inner side surfaces of the left and right side frames 11 are provided with recesses that are recessed inwardly in the left and right sides, and each recess is provided with a through hole that penetrates in the front-rear direction.
- the occupant support member 40 is connected by inserting both ends of the left and right ends into the through holes and latching them. As shown in FIG.
- the left and right end portions of the first occupant support member 41 are connected to the side frame 11, and are extended when the rear end portions of the thigh support portion 27 and the recess 30 are extended to the left and right sides. It is comprised so that it may be located on a line.
- the thigh support portion 27 and the recessed portion 30 of the pan frame 20 extend rearward from the portion of the left and right end portions 21 that are overlapped with the side frame 11. Therefore, it can arrange
- the pan frame 20 can be brought close to the first occupant support member 41 while avoiding the portion connected to the side frame 11 of the first occupant support member 41. Accordingly, the pan frame 20 and the first occupant support member 41 are easily arranged continuously, and the seating feeling can be further improved. Furthermore, a sufficient installation space for attaching the first occupant support member 41 to the side frame 11 can be secured.
- the corrugated pitch of the first occupant support member 41 is formed to be larger than the corrugated pitch of the second occupant support member 42.
- the diameter of the first occupant support member 41 is formed to be larger than the diameter of the second occupant support member 42. That is, the first occupant support member 41 is configured to have a smaller vertical deflection with respect to the load applied when the occupant is seated than the second occupant support member 42. Therefore, when the occupant is seated, the first occupant support member with a small amount of flexure is arranged at a substantially central portion of the cushion frame 10 to which a small load is applied among the seating loads by the occupant's buttocks, and the cushion frame 10 to which a large load is applied.
- the second occupant support member having a large amount of bending is disposed in the rear portion of the vehicle. Accordingly, by appropriately changing the corrugated pitch or diameter of the first occupant support member 41 and the second occupant support member 42, it is possible to provide a high followability to the seated occupant and further improve the seating feeling. it can.
- the occupant support member 40 is configured such that the sciatic tubercle portion of the occupant to be seated is disposed between the first occupant support member 41 and the second occupant support member 42. That is, the first occupant support member 41 and the second occupant support member 42 are spaced apart from each other so as not to be disposed at least directly below the sciatic tubercle. Therefore, it is possible to reduce the sciatic pressure applied to the sciatic nodule portion of the seated occupant and improve the sitting feeling.
- the front-rear distance between the front end of the first occupant support member 41 and the rear end of the pan frame 20 is smaller than the front-rear distance of the first occupant support member 41, as shown in FIG. ing.
- the front-rear distance between the front end portion of the first occupant support member 41 and the rear end portion of the pan frame 20 is the rear end portion of the first occupant support member 41 and the front end of the second occupant support member 42. It is smaller than the distance between the front and back. Therefore, when the occupant is seated, the stress of the seating load is not concentrated on the occupant support member 40, but the stress is distributed to the pan frame 20 and the occupant support member 40, and the seating feeling can be further improved.
- the first occupant support member 41 is disposed so as to be inclined downward from the pan frame 20 side toward the frame connecting member 12 side with respect to the horizontal plane.
- the second occupant support member 42 is disposed on a horizontal plane, or is disposed so as to incline upward from the pan frame 20 side toward the frame connecting member 12 side. Therefore, since the occupant support member 40 easily follows the shape of the occupant's buttocks, the seated occupant can obtain a good fit.
- the inclination angle of the first occupant support member 41 and the inclination angle of the second occupant support member 42 are set depending on the buttock shape of an occupant having a general physique, and the first occupant support member 41 is The inclination angle is larger than the second occupant support member 42 with respect to the horizontal plane.
- the front end portion of the first occupant support member 41 is disposed above the rear end portion of the pan frame 20. That is, in consideration of the amount of vertical deflection of the cushion pad 3a and the first occupant support member 41 with respect to the load applied when the occupant is seated, when the occupant is seated, the pan frame 12 to the first occupant support member 41 are substantially flat. It is arranged to be on top. Therefore, it is possible to improve the seating feeling by providing high followability to a seated passenger.
- the rear end portion of the pan frame 20 is the first occupant. It is configured to easily extend to the support member 41 side. Accordingly, the pan frame 20 and the first occupant support member 41 are easily arranged continuously, and the seating feeling can be further improved.
- the first occupant support member 41 and the second occupant support member 42 are disposed above the upper surface of the frame connecting member 12. Further, the front end portion of the first occupant support member 41 and the rear end portion of the second occupant support member 42 are respectively higher than the plane formed by the rear end portion of the pan frame and the upper surface of the frame connecting member. Has been placed. Therefore, the occupant support member 40 is disposed in the vicinity of the buttocks of the occupant seated in the vertical direction, and the followability to the occupant can be further improved through the cushion pad 3a. Further, since the thickness of the cushion pad 3a is reduced, the seat can be reduced in weight and size.
- the occupant support member 40 of the present embodiment extends in the left-right direction so as to form a substantially flat surface with respect to the surface in contact with the cushion pad 3a, but can be changed as appropriate.
- the center portion in the left-right direction of the occupant support member 40 may include a bent portion that is bent in the vertical direction with respect to the surface in contact with the cushion pad 3a and on the opposite side of the cushion pad 3a. . Since the center portion of the occupant support member 40 is located at a position corresponding to the recessed portion 30 of the pan frame 20, when the occupant is seated, the impact applied to the occupant's crotch portion by the bent portion of the recessed portion 30 and the occupant support member 40. Can be further relaxed. Accordingly, the seating feeling of the occupant can be further improved.
- the front seat of the automobile has been described as a specific example.
- the present invention is not limited to this and can be applied to a middle seat and a rear seat of the automobile.
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Abstract
Description
シートクッションの着座感を良好にする技術として、例えば、車体から伝達される振動を減衰させる技術が知られている(例えば、特許文献1)。
パンフレームの前方部分は、着座する乗員の大腿部を支持する位置であって平板状に形成されており、後方部分は、乗員の臀部を支持する位置であって下方に窪む凹部を備えた構成となっている。弾性スプリングは、この乗員の臀部を支持する凹部の上方に配置され、パンフレームの前方部分と略同一水平面上の高さに配置されている。
従って、このシートクッションは、弾性スプリング及びクッションパッドの弾性変形に起因して、良好なクッション性を得ることができ、車両の走行に伴って車体から伝達される振動を和らげることができる。
同時に、パンフレームと弾性スプリングの配置を考慮して、さらに軽量化及びコンパクト化させた車両用シートが望まれていた。
また、本発明の他の目的は、軽量化及びコンパクト化させて、着座感が良好な車両用シートを提供することにある。
また、パンフレームの左右方向の中央には、着座する乗員の大腿部を支持する大腿支持部が設けられ、大腿支持部は、前後方向においてパンフレームの左右両端部よりも乗員支持部材側に延出しているため、乗員が着座したときに、パンフレームの大腿支持部が乗員の大腿部を支持すると共に、乗員支持部材が乗員の臀部を支持する構成となり、また大腿支持部と乗員支持部材との間の前後距離が小さくなる。従って、乗員支持部材に着座荷重の応力が集中することなく、パンフレームと乗員支持部材に応力分散され、着座感を一層向上させることができる。
このように、第一乗員支持部材は、第二乗員支持部材よりも、乗員の着座時に加わる荷重に対する上下方向の撓み量が小さいため、乗員が着座したときに、乗員の臀部による着座荷重が大きく加わるクッションフレーム後方側の部分に、撓み量の大きい第二乗員支持部材を配置する構成となり、着座する乗員に対する高い追従性を備え、着座感を一層向上できる。
このように、第一乗員支持部材のピッチは、第二乗員支持部材のピッチよりも大きいため、第一乗員支持部材は、第二乗員支持部材よりも、上下方向の撓み量が小さくなる。従って、乗員の臀部による着座荷重が小さく加わるクッションフレーム略中央の部分に、撓み量の小さい第一乗員支持部材を配置する構成となり、着座感を一層向上できる。
このように、第一乗員支持部材の径が大きいため、第一乗員支持部材は、上下方向の撓み量が最も小さくなる。従って、乗員の臀部による着座荷重が小さく加わるクッションフレーム略中央の部分に、撓み量の最も小さい第一乗員支持部材を配置する構成となり、着座感を一層向上できる。
このように、大腿支持部材の後方端部に、下方に突出するフランジが設けられているため、乗員の着座感を保持しながら、大腿支持部の後方端部の剛性を高めることができる。また、フランジが下方に突出するため、上下方向に撓む乗員支持部材との干渉を抑制できる。
このように構成されているため、乗員が着座したときに、乗員の股間部に与える衝撃を緩和することができ、着座感を一層向上させることができる。
このように、第一乗員支持部材及び第二乗員支持部材は、連結部材の上面よりも上方に設けられているため、これら乗員支持部材は、上下方向において着座した乗員の臀部に近接して配置されることとなり、乗員に対する追従性を一層向上できる。
また、乗員支持部材の上方に設けられたクッションパッドの厚みが薄くなることから、シートを軽量化、コンパクト化することができる。
このように構成されているため、乗員支持部材は、上下方向において着座した乗員の臀部に近接して配置され、乗員に対する追従性を向上できる。また、シートの軽量化、コンパクト化につながる。
また、パンフレームの左右方向の中央には、着座する乗員の大腿部を支持する大腿支持部が設けられ、大腿支持部は、前後方向においてパンフレームの左右両端部よりも乗員支持部材側に延出しているため、乗員が着座したときに、パンフレームの大腿支持部が乗員の大腿部を支持すると共に、乗員支持部材が乗員の臀部を支持する構成となり、また大腿支持部と乗員支持部材との間の前後距離が小さくなる。従って、乗員支持部材に着座荷重の応力が集中することなく、パンフレームと乗員支持部材に応力分散され、着座感を一層向上させることができる。
請求項3の発明によれば、第一乗員支持部材のピッチは、第二乗員支持部材のピッチよりも大きいため、第一乗員支持部材は、第二乗員支持部材よりも、上下方向の撓み量が小さくなる。従って、乗員の臀部による着座荷重が小さく加わるクッションフレーム略中央の部分に、撓み量の小さい第一乗員支持部材を配置する構成となり、着座感を一層向上できる。
請求項4の発明によれば、第一乗員支持部材の径が大きいため、乗員の着座荷重に対する上下方向の撓み量が最も小さくなる。従って、乗員の臀部による着座荷重が小さく加わるクッションフレーム略中央の部分に、撓み量の最も小さい第一乗員支持部材を配置する構成となり、着座感を一層向上できる。
請求項6の発明によれば、乗員が着座したときに、乗員の股間部に与える衝撃を緩和することができ、着座感を一層向上させることができる。
また、乗員支持部材の上方に設けられたクッションパッドの厚みが薄くなることから、シートを軽量化、コンパクト化することができる。
請求項8の発明によれば、乗員支持部材は、上下方向において着座した乗員の臀部に近接して配置され、乗員に対する追従性を向上でき、シートの軽量化、コンパクト化につながる。
本実施形態の車両用シートSは、図1に示すように、シートバック1と、シートバック1の上面側に配置されたヘッドレスト2と、シートバック1の前側に配置されたシートクッション3とから主に構成されている。
なお、車両用シートSのシートバック1に対して乗員が着座する側が前側となる。
ヘッドレスト2は、乗員の頭を後方から支持する頭部であって、芯材となる不図示のピラーにクッションパッド2aを載置して表皮2bで被覆されて構成されている。
サイドフレーム11の後方部分の左右内側面には、左右方向に延出するフレーム連結部材12が連結固定されている。
フレーム連結部材12は、縦断面略円形状のパイプ部材からなり、乗員支持部材40の後方に配置され、左右のサイドフレーム11の上下方向の略中央を貫通して構成される。
パンフレーム20の左右両端部21は、前方部分に下方に折り曲げられた折り曲げ部22と、略中央から後方部分にわたって下方に突出する側方フランジ部23とを備えている。
折り曲げ部22は、各サイドフレーム11の前方部分の上面に掛け止めされ、固着接合されて連結されている。
後方フランジ部24は、左右両端部21の間を左右方向に延出して形成される。
なお、本実施形態の後方フランジ部24の先端は下方に突出しているが、これに限定されることなく、例えば前方側に折り曲げた形状としても良い。このようにすれば、パンフレーム20の後方端部の剛性を向上できると共に、乗員支持部材40との干渉を抑制する配置になる。
凸部25は、略U字形状からなり、左右方向に延出して形成されている。このように、パンフレーム20の前方部分に凸部25が設けられているため、車両衝突時のサブマリン現象を抑制でき、また乗員の着座時の位置ずれを抑制して着座感を向上できる。
傾斜部26は、着座する乗員の左右大腿部を支持する一対の大腿支持部27と、左右の大腿支持部27の間に下方に窪んだ凹部30とから構成されている。
大腿支持部27は、図3に示すように、左右両端部21よりも後方側に延出して形成されているため、大腿支持部27と乗員支持部材40との間の前後距離が小さくなる。そのため、乗員支持部材40に着座荷重の応力が集中することなく、パンフレーム20と乗員支持部材40に応力分散され、着座感を一層向上させることができる。
凹部30は、傾斜部31と、傾斜部31の後方側に連続して設けられた底面部32とを備えており、傾斜部31は、大腿支持部27よりも下方傾斜するように前方から後方に延出しており、底面部32は、水平な平面として形成されている。
底面部32には、上下方向に貫通した略矩形状の穴部33が複数設けられており、穴部33は、ハーネス等の他部材を取付けるための穴として形成されている。
なお、穴部33の形状は、略矩形状に限定されることなく、適宜変更しても良い。また、穴部33の個数は1つ設けられていても良い。
例えば、凹部30全体が水平な平面となるように略矩形状に窪んで形成されていても良く、凹部30と左右の大腿支持部27の連続する部分が面取りされていても良い。
また、凹部30の上方を跨ぐように左右の大腿支持部27を連結する連結部が、別途設けられていても良い。連結部を別途備えることでパンフレーム20の後方端部の剛性を高めることができる。
孔部34は、略矩形状に形成されているが、これに限定されることなく、円形状、楕円形状、または多角形状等に形成されていても良い。
左右の大腿支持部27の間に孔部34が設けられることにより、着座した乗員の股間部に与える衝撃を一層緩和することができ、またパンフレーム20を軽量化できる。
連結部35には、下方に突出する不図示のフランジ部が設けられており、剛性を高めると共に、乗員支持部材40との干渉を抑制する配置に構成されている。
なお、本実施形態の連結部35は1つ設けられているが、複数設けられていても良い。
乗員支持部材40は、図2に示すように、パンフレーム20とフレーム連結部材12の間に所定の間隔をおいて複数配置されており、左右方向に略平行となるよう延出している。
また、乗員支持部材40は、前後方向に所定のピッチで湾曲して形成されている。
なお、本実施形態の乗員支持部材40は弾性スプリングからなるが、これに限定されることなく、代わりに弾性ゴム等の弾性体を用いても良い。
乗員支持部材40は、左右両端部が左右のサイドフレーム11の内側面に掛け止めされることによって、左右のサイドフレーム11と連結されている。
具体的には、左右のサイドフレーム11の内側面には、左右内側に窪んだ凹部が設けられており、各凹部には、前後方向に貫通する貫通穴が設けられている。乗員支持部材40は、左右両端部がこの貫通穴に挿入され掛け止めされることで連結される。
第一乗員支持部材41の左右両端部は、図3に示すように、サイドフレーム11と連結されており、また、大腿支持部27及び凹部30の後端部を左右外側に延長したときの延長線上に位置するように構成されている。
そのため、第一乗員支持部材41のサイドフレーム11と連結される部分が、パンフレーム20側に近接するように配置できる。
言い換えれば、パンフレーム20は、第一乗員支持部材41のサイドフレーム11と連結される部分を避けて、第一乗員支持部材41に近づけることが可能になる。
従って、パンフレーム20と第一乗員支持部材41が連続的に配置され易い構成となり、着座感を一層向上できる。
さらに、サイドフレーム11に第一乗員支持部材41を取り付けるための取付スペースを十分に確保することができる。
すなわち、第一乗員支持部材41が、第二乗員支持部材42よりも、乗員の着座時に加わる荷重に対して上下方向の撓み量が小さくなるように構成されている。
そのため、乗員が着座したとき、乗員の臀部による着座荷重のうち、小さな荷重が加わるクッションフレーム10の略中央部分に、撓み量の小さい第一乗員支持部材が配置され、大きな荷重が加わるクッションフレーム10の後方部分に、撓み量の大きい第二乗員支持部材が配置されることになる。
従って、第一乗員支持部材41、第二乗員支持部材42の波形状のピッチまたは径の大きさを適宜変更することによって、着座する乗員に対する高い追従性を備え、着座感を一層向上することができる。
そのため、着座する乗員の坐骨結節部に加わる坐骨圧力を低減し、着座感を良好にすることができる。
また、第一乗員支持部材41の前方端部と、パンフレーム20の後方端部との間の前後距離は、第一乗員支持部材41の後方端部と、第二乗員支持部材42の前方端部との間の前後距離よりも小さくなっている。
そのため、乗員が着座したときに、乗員支持部材40に着座荷重の応力が集中することなく、パンフレーム20と乗員支持部材40に応力分散され、着座感を一層向上させることができる。
また、第二乗員支持部材42は、水平面に配置されるか、またはパンフレーム20側からフレーム連結部材12側に向って上方に傾斜するように配置されている。
そのため、乗員支持部材40は、乗員の臀部の形状に追従し易くなるため、着座した乗員が良好なフィット感を得ることができる。
なお、第一乗員支持部材41の傾斜角度と、第二乗員支持部材42の傾斜角度は、一般的な体格の乗員の臀部形状に依存して設定されており、第一乗員支持部材41が、第二乗員支持部材42よりも水平面に対して傾斜角度が大きくなっている。
すなわち、乗員の着座時に加わる荷重に対するクッションパッド3a及び第一乗員支持部材41の上下方向の撓み量を考慮して、乗員が着座したときに、パンフレーム12から第一乗員支持部材41まで略平面上となるように配置されている。
そのため、着座する乗員に対する高い追従性を備え、着座感を一層向上できる。
また、第一乗員支持部材41の前方端部と、第二乗員支持部材42の後方端部は、それぞれパンフレームの後方端部と、フレーム連結部材の上面とにより形成される平面よりも上方に配置されている。
そのため、乗員支持部材40は、上下方向において着座した乗員の臀部に近接して配置されることとなり、クッションパッド3aを介して乗員に対する追従性を一層向上させることができる。また、クッションパッド3aの厚みが薄くなることから、シートを軽量化、コンパクト化することができる。
他の実施形態として、乗員支持部材40の左右方向の中央部分が、クッションパッド3aに当接する面に対して鉛直方向であってクッションパッド3a逆側に折り曲げられた折り曲げ部を備えていても良い。
この乗員支持部材40の中央部分は、パンフレーム20の凹部30に対応する位置となるため、乗員が着座したときに、凹部30及び乗員支持部材40の折り曲げ部によって、乗員の股間部に与える衝撃を一層緩和することができる。従って、乗員の着座感を一層向上させることができる。
1 シートバック
1a、2a、3a クッションパッド
1b、2b、3b 表皮
2 ヘッドレスト
3 シートクッション
10 クッションフレーム
11 サイドフレーム
12 フレーム連結部材
20 パンフレーム
21 左右両端部
22 折り曲げ部
23 側方フランジ部
24 後方フランジ部
25 凸部
26 傾斜部
27 大腿支持部
30 凹部
31 傾斜部
32 底面部
33 穴部
34 孔部
35 連結部
40 乗員支持部材
41 第一乗員支持部材
42 第二乗員支持部材
Claims (8)
- 骨格となるクッションフレームを有するシートクッションを備え、
前記クッションフレームは、左右側方に配置されたサイドフレームと、該サイドフレームの前方部分を連結するパンフレームと、該パンフレームの後方において、前記サイドフレームを連結する乗員支持部材と、を備え、
該乗員支持部材は、水平面に対して後傾するように配置され、
前記乗員支持部材の前方端部は、前記パンフレームの後方端部よりも上方に設けられ、
該パンフレームの左右方向の中央には、着座する乗員の大腿部を支持する大腿支持部が設けられ、
該大腿支持部は、前後方向において前記パンフレームの左右両端部よりも前記乗員支持部材側に延出していることを特徴とする車両用シート。 - 前記乗員支持部材は、前後方向において前記パンフレーム側に配置された第一乗員支持部材であって、
前記クッションフレームは、前記サイドフレームを連結し、前記第一乗員支持部材よりも後方に配置された第二乗員支持部材を備え、
前記第一乗員支持部材は、前記第二乗員支持部材よりも、乗員の着座時に加わる荷重に対する上下方向の撓み量が小さいことを特徴とする請求項1に記載の車両用シート。 - 前記第一乗員支持部材及び前記第二乗員支持部材は、前後方向に所定のピッチで湾曲する波形状からなり、
前記第一乗員支持部材の前記ピッチは、前記第二乗員支持部材の前記ピッチよりも大きいことを特徴とする請求項2に記載の車両用シート。 - 前記第一乗員支持部材及び前記第二乗員支持部材は、弾性スプリングからなり、
前記第一乗員支持部材及び前記第二乗員支持部材のうち、前記第一乗員支持部材の径が大きいことを特徴とする請求項2又は3に記載の車両用シート。 - 前記大腿支持部のうち、前記乗員支持部材側に延出する後方端部には、該後方端部から下方に突出するフランジが設けられていることを特徴とする請求項1乃至4いずれか記載の車両用シート。
- 前記大腿支持部の左右方向の間には、下方に窪んだ凹部が設けられていることを特徴とする請求項1乃至5いずれか記載の車両用シート。
- 前記クッションフレームは、前記左右のサイドフレームの後方部分を連結するフレーム連結部材を備え、
前記第一乗員支持部材及び前記第二乗員支持部材は、前記フレーム連結部材の上面よりも上方に設けられていることを特徴とする請求項2乃至6いずれか記載の車両用シート。 - 前記第一乗員支持部材の前方端部及び前記第二乗員支持部材の後方端部は、前記パンフレームの後方端部と、前記フレーム連結部材の上面とにより形成される平面よりも上方に設けられていることを特徴とする請求項2乃至7いずれか記載の車両用シート。
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PCT/JP2012/074799 WO2014049755A1 (ja) | 2012-09-26 | 2012-09-26 | 車両用シート |
Country Status (5)
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US (1) | US9446696B2 (ja) |
EP (1) | EP2902259B1 (ja) |
JP (1) | JP5956592B2 (ja) |
CN (1) | CN104661871A (ja) |
WO (1) | WO2014049755A1 (ja) |
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WO2014163582A1 (en) * | 2013-04-05 | 2014-10-09 | Singapore Technologies Aerospace Ltd | Seat pan for a passenger seat and passenger seat |
US10259353B2 (en) * | 2015-04-23 | 2019-04-16 | Syntec Seating Solutions, Llc | School bus seat |
JP2018024315A (ja) * | 2016-08-09 | 2018-02-15 | テイ・エス テック株式会社 | 乗物用シート |
US11312272B2 (en) * | 2017-08-14 | 2022-04-26 | Ts Tech Co., Ltd. | Conveyance seat |
DE102018200024A1 (de) * | 2018-01-02 | 2019-07-04 | Ford Global Technologies, Llc | Justierbare Schenkelstütze für einen Fahrzeugsitz |
JP7200701B2 (ja) * | 2019-01-30 | 2023-01-10 | トヨタ紡織株式会社 | シート |
US10703233B1 (en) * | 2019-03-12 | 2020-07-07 | GM Global Technology Operations LLC | Anti-submarine seat for a vehicle |
US11691738B2 (en) | 2020-12-14 | 2023-07-04 | B/E Aerospace, Inc. | Spring-based seat diaphragm |
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2012
- 2012-09-26 EP EP12885840.4A patent/EP2902259B1/en active Active
- 2012-09-26 US US14/430,770 patent/US9446696B2/en active Active
- 2012-09-26 JP JP2014537930A patent/JP5956592B2/ja active Active
- 2012-09-26 WO PCT/JP2012/074799 patent/WO2014049755A1/ja active Application Filing
- 2012-09-26 CN CN201280075924.7A patent/CN104661871A/zh active Pending
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Also Published As
Publication number | Publication date |
---|---|
JP5956592B2 (ja) | 2016-07-27 |
EP2902259A1 (en) | 2015-08-05 |
US9446696B2 (en) | 2016-09-20 |
US20150239380A1 (en) | 2015-08-27 |
EP2902259A4 (en) | 2015-08-26 |
CN104661871A (zh) | 2015-05-27 |
EP2902259B1 (en) | 2018-11-07 |
JPWO2014049755A1 (ja) | 2016-08-22 |
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