JP6597384B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat. More specifically, the present invention relates to a vehicle seat having a seat frame and a planar support member that is stretched around the seat frame and supports the body of a seated person.

  2. Description of the Related Art Conventionally, a vehicular seat is known in which a planar support member that supports a seat pad from the back side is bridged in a frame assembled in a frame shape of a seat cushion (Patent Document 1). The planar support member includes a flexible planar body and a pair of left and right support wires passed in the front-rear direction along the left and right edges of the planar body. The support wires have their front and rear edge portions attached and fixed to the front and rear frame frames of the seat cushion, respectively. By the said structure, it is set as the state bridge | crosslinked to the flame | frame of the seat cushion as a state with which the planar body was pulled from both right and left sides by a pair of left and right support wires.

Japanese Patent No. 5476941

  In the above prior art, it is necessary to provide each support wire that supports the planar body with a rigidity that can apply an appropriate tensioning force to the planar body and a flexibility that does not cause a feeling of bottoming in the ride comfort. There is. However, it is difficult to make such adjustments compatible with each other, and it is not possible to set an optimal support pressure for each portion of the planar support member according to the body pressure distribution of the seated person. The present invention was devised to solve the above problems, and the problem to be solved by the present invention is to partially change the support pressure of the planar support member in accordance with the body pressure distribution of the seated person. There is to be able to do it.

  In order to solve the above problems, the vehicle seat of the present invention takes the following means.

  1st invention is a vehicle seat which has a seat frame and the planar support member which is stretched by the seat frame and supports a seated person's body. A curing member that partially increases the support pressure of the planar support member is provided in a state in which the planar support member can be integrally bent at the center portion and both edge portions in the sheet width direction of the planar support member.

  According to the first invention, the support pressure of the planar support member can be partially increased in the region where the curing member is provided. Specifically, the support pressure in the vicinity of the high-sitting pressure region where the seated person's sciatic tuberosity is located is appropriately relieved by partially increasing the support pressure at the center and both edges of the sheet-like support member in the seat width direction. On the other hand, it is possible to make it difficult for the planar support member to be left and right when cornering the vehicle.

  The second invention is the following configuration in the first invention described above. The stiffening member is provided in a region deviating from the high sitting pressure region where the seated person's sciatic nodule is located in the region of the planar support member in the seat width direction.

  According to the second aspect of the present invention, it is possible to more appropriately relieve the supporting pressure in the vicinity of the high sitting pressure region where the seated person's sciatic tuberosity is located.

  The third invention is the following configuration in the second invention described above. The curing member is provided in a state where the high seating pressure region extends across a direction perpendicular to the sheet width direction in the in-plane direction of the planar support member.

  According to the third aspect of the present invention, it is possible to more appropriately suppress the movement of the planar support member that is particularly large in the high seat pressure region during cornering of the vehicle.

  According to a fourth invention, in any one of the first to third inventions described above, the following configuration is adopted. The curing member is provided so as to protrude on the surface of the planar support member that receives the body pressure from the seated person.

  According to the fourth aspect of the invention, when the seat pad for elastically supporting the seated person's body is provided on the surface of the planar support member, the curing member is pressed strongly against the seat pad partially from the back side. It becomes a structure, and the horizontal shift of a seat pad can be prevented appropriately.

  According to a fifth invention, in any of the first to fourth inventions described above, the following configuration is adopted. The planar support member is configured to be stretched between the front and rear frames of the seat cushion constituting the seat frame. The above-mentioned planar support member is passed through in the sheet width direction along each of the cylindrical through-holes formed on the flexible planar body and the front and rear edges of the planar body, and corresponding front and rear sides. And front and rear wires attached to each frame. In at least one of the through portions, a central portion in the sheet width direction is formed with an opening that exposes the corresponding wire passed through the one to the outside.

  According to the fifth aspect of the present invention, the opening for exposing the corresponding wire to the outside is formed at the center of at least one of the through portions, so that the planar support member having the opening is formed. The support pressure on the line will decrease. However, a decrease in the support pressure can be prevented by providing the curing member on the center line of the planar support member.

  The sixth invention is the following structure in the fifth invention described above. The planar body is made of a fabric material processed into a cloth shape having a uniform structure.

  According to the sixth aspect of the invention, even when a general fabric material having a uniform structure is applied as a planar body, the support pressure of the planar support member is partially simplified depending on the body pressure distribution of the seated person. Can be changed.

1 is a perspective view illustrating a schematic configuration of a vehicle seat of Example 1. FIG. It is a disassembled perspective view of a seat cushion. It is an expansion perspective view showing the state of assembling the planar support member to the seat frame. It is the IV-IV sectional view taken on the line of FIG. It is sectional drawing showing the state by which the body pressure from the seated person was applied to the planar support member from FIG. It is sectional drawing which represented schematic structure of the vehicle seat of Example 2 by the same cut surface as FIG.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the configuration of the seat 1 (vehicle seat) according to the first embodiment will be described with reference to FIGS. As shown in FIG. 1, the seat 1 according to the present embodiment is configured as a right seat of an automobile, and includes a seat back 2 that serves as a backrest portion of a seated person and a seat cushion 3 that serves as a seating portion. It has a configuration. The seat back 2 described above is supported by connecting the left and right side portions on the lower end side to the left and right side portions on the rear end side of the seat cushion 3. The seat cushion 3 is connected to a vehicle floor via a pair of left and right slide rails 4. By connecting via the slide rails 4, the seat 1 can adjust the position in the front-rear direction on the floor.

  The seat cushion 3 is connected between the above-described slide rails 4 with a pair of left and right front links 5A and rear links 5B interposed between the seat lifters 5 constituting a pair of left and right four-bar linkage mechanisms. It is supposed to be in a state. By the connection via the sheet lifter 5, the seat 1 can also adjust the position in the height direction on the floor.

  As shown in FIG. 2, the seat cushion 3 described above is made of a metal cushion frame 3F assembled in a substantially square frame shape in plan view and constituting the internal skeleton, and a foam mounted on the cushion frame 3F. The cushion pad 3 </ b> P made of urethane and the cloth cushion cover 3 </ b> C that covers the cushion pad 3 </ b> P from the upper side and forms the appearance design surface of the seat cushion 3 are roughly configured. Further, in the rectangular frame of the cushion frame 3F, a planar support member 10 that functions to widely support the central region of the cushion pad 3P assembled on the cushion frame 3F from the lower side by a surface is bridged. Here, the cushion frame 3F described above corresponds to the “seat frame” of the present invention.

  The above-described cushion frame 3F includes a side frame 3Fa made of a pair of left and right longitudinal steel plates, a steel plate front panel 3Fb integrally bridged between the front end portions of the side frames 3Fa, and each side. The front pipe 3Fc provided in a bridging manner between the front portions of the frame 3Fa and the rear pipe 3Fd provided in a bridging manner between the rear portions of the side frames 3Fa were assembled into a substantially square frame shape in plan view. It is configured.

  The front pipe 3Fc described above is configured as a connecting rod that integrally connects the connecting shafts that connect the pair of left and right front links 5A constituting the seat lifter 5 described above to each side frame 3Fa so as to be axially rotatable. ing. Further, the rear pipe 3Fd is configured as a connecting rod that integrally connects the connecting shafts that connect the pair of left and right rear links 5B constituting the seat lifter 5 described above to the side frames 3Fa so as to be axially rotatable. ing. The front pipe 3Fc and the rear pipe 3Fd are configured to rotate about the side frames 3Fa as the front link 5A and the rear link 5B move along with the operation of the seat lifter 5, respectively.

  The cushion pad 3P is assembled so as to straddle the rectangular frame of the cushion frame 3F described above. As a result of the above assembly, the cushion pad 3P is strongly supported from below by the frame portions of the cushion frame 3F, and the center portion is lowered by the planar support member 10 bridged in the frame of the cushion frame 3F. As a state of being widely supported from the side, the load received from the hip or thigh of the seated person can be elastically and stably supported.

  The cushion cover 3C is put on the cushion pad 3P set on the cushion frame 3F described above from the upper side, and the front, rear, left and right peripheral parts are drawn into the lower part of the cushion frame 3F and fixed. Is provided. By the above assembly, the cushion cover 3C is configured to hold the cushion pad 3P in a state where the cushion pad 3P is fixed on the cushion frame 3F by the tension accompanying the tension.

  Further, the planar support member 10 includes a planar body 11 having a substantially rectangular shape in plan view made of a fabric material, and front and rear wires 12 made of steel wire rods assembled to front and rear edges of the planar body 11. , 13 and resin-made curing members 14A, 14B provided in a state of being integrally fixed to the center portion in the sheet width direction of the planar body 11 and the respective left and right edge portions. ing. In the planar support member 10 described above, the front and rear wires 12 and 13 assembled to the front and rear edges of the planar body 11 are disposed between the front portions of the side frames 3Fa of the cushion frame 3F. By being hooked and fixed to a front pipe 3Fc provided in a bridging manner and a rear pipe 3Fd provided in a bridging manner between the rear portions, they are bridged as a stretched state therebetween. .

  By the above assembly, the planar support member 10 is hooked in such a manner that the wires 12 and 13 can release the shaft rotation even when the front pipe 3Fc and the rear pipe 3Fd described above are rotated by the operation of the seat lifter 5. As a result, they are held in a state of being bridged in a fixed posture between them. Here, the front pipe 3Fc and the rear pipe 3Fd described above correspond to “each frame on the front and rear sides” of the present invention. Hereinafter, a specific configuration of each part of the planar support member 10 described above will be described.

  The planar body 11 is formed of a single fabric material having a high tensile performance capable of receiving a load of a seated person. Specifically, the planar body 11 is a woven fabric (a knitted fabric having a uniform structure in which the weft is made of a PET resin having low extensibility and the warp is made of a PTT resin having extensibility rather than the weft. ). As shown in FIG. 3, the planar body 11 described above is formed with through portions 11 </ b> A and 11 </ b> B in which the respective edge portions are folded back to the front side (the upper side in the drawing) and are woven into a tubular shape. ing. Each of the through portions 11A and 11B is formed separately at two left and right portions that leave the central portion in the sheet width direction at each of the front and rear edges of the planar body 11. That is, the through portions 11 </ b> A and 11 </ b> B are not formed in a cylindrical shape that is uniformly continuous over the entire region in the sheet width direction at the front and rear edges of the planar body 11. In the center portion in the sheet width direction, the tube shape is divided into two parts having openings 11Aa and 11Ba cut out in the shape of opening in the upward direction and the front-rear direction so as to be divided in the middle.

  The front and rear wires 12 and 13 are respectively formed in the respective regions formed separately at the left and right portions of the corresponding through portions 11A and 11B formed at the front and rear edges of the planar body 11, respectively. It is set as the structure provided with the left-right paired structure which is passed separately and assembled. Specifically, the pair of left and right front and rear wires 12 and 13 are respectively formed in the left and right regions of the corresponding through portions 11A and 11B of the planar body 11 and are formed in the left and right regions. Insertion portions 12A, 13A that are passed through, and hook portions 12B, 13B that extend in an arched shape from both ends of each insertion portion 12A, 13A to the front side or the rear side. Yes. Each of the pair of left and right rear wires 13 described above has a shape in which the respective end portions extending to the rear side of the hook portions 13B described above are connected to each other. With the above configuration, each rear wire 13 is formed in an endless loop shape.

  The pair of left and right wires 12 and 13 on the left and right sides described above are formed so that they do not fall off when the corresponding hook portions 12B and 13B are hooked on the front pipe 3Fc or the rear pipe 3Fd from above. It is supposed to be assembled. The hook portions 12B and 13B described above are coated with resin coating materials 12C and 13C on the outer peripheral surfaces thereof. With the above-described configuration, the hook portions 12B and 13B are protected so that no abnormal noise is generated at the contact portion with the corresponding front pipe 3Fc or rear pipe 3Fd to be hooked.

  The curing members 14A and 14B are provided in an integrally joined state on the front side surface (upper side surface in the drawing) of the above-described planar body 11 by integral molding. Each of the curing members 14A and 14B has a front-and-rear direction substantially leaving the through-parts 11A and 11B formed at the front-and-rear side edges in the corresponding portions of the planar body 11 in the sheet width direction. It is the shape extended in the form which has a uniform cross-sectional shape continuously over the whole area. With the above configuration, as shown in FIG. 4, the planar body 11 is partially supported by the central portion in the sheet width direction in which the above-described curing members 14 </ b> A and 14 </ b> B are disposed and the respective edge portions on both the left and right sides. It is configured as a region A1 with increased rigidity and high support pressure. In addition, other regions in the sheet body 11 in the sheet width direction, that is, the regions where the curing members 14A and 14B located between the regions A1 where the supporting pressures are high are not disposed, It is configured as a region A2 having a low support pressure where the support rigidity is not increased.

  The high support pressure regions A1 formed at the center portion of the planar body 11 in the seat width direction and the left and right edges are respectively seated from the high seat pressure region PA where the seated person's sciatic tuberosity is located. It is formed so as to be located in a region deviated in the width direction. As a result, the planar body 11 has a low supporting pressure region A2 in which the high sitting pressure region PA where the above-mentioned seated person's sciatic tuberosity is located is sandwiched between the above-mentioned high supporting pressure regions A1. It is configured to be positioned above.

  With this configuration, the planar body 11 is left and right during cornering of the vehicle while appropriately reducing the support pressure in the vicinity of the high seating pressure area PA where the sciatic tuber of the seated person is located. It is possible to make the structure difficult to be applied. Further, in addition to the formation of the region A1 having a high support pressure at each of the left and right edges of the planar body 11, the region A1 having a high support pressure is also formed at the center in the sheet width direction. A region A2 having a low support pressure formed between the left and right edges of the planar body 11 is divided into left and right at the center, and the length in the sheet width direction of each region A2 having a low support pressure ( The span L) is substantially shortened.

  As a result, as shown in FIG. 5, a region having a high support pressure on the central side functions as a fixing point on both ends when the region A2 having a low support pressure receives body pressure from the seated person and bends downward. Since the span L between A1 and the region A1 with high support pressure on both the left and right sides is short, the direction of the front side surface (the upper side surface in the figure) that receives these loads is left and right in the region A2 with low support pressure. It becomes easy to advance the bending while maintaining the upward state without being largely inclined. Therefore, since the load can be received without greatly changing the support shape (surface shape) of the planar body 11, the load on the seated person can be stably received.

  Specifically, as shown in FIG. 3, the left and right edges of the planar body 11 are inserted through the wires 12 and 13 that are passed through the front and rear edges of the planar body 11, respectively. 12A and 13A are supported from the front and rear sides. As a result, when the body pressure from the seated person is applied to the planar body 11, the left and right edges of the planar body 11 are inserted through the wires 12 and 13 located on the front and rear sides thereof. The parts 12A and 13A are strongly supported from the front and rear sides. Accordingly, the above-described curing members 14B are joined to the respective left and right edges of the planar body 11, so that the effect of improving the support pressure by these curing members 14B can be appropriately exhibited.

  On the other hand, the sheet width direction center portion of the planar body 11 is sandwiched between the opening portions 11Aa and 11Ba of the through portions 11A and 11B formed at the front and rear edges of the planar body 11. It is in a state where it is positioned and cannot be supported from the front and rear sides by the insertion portions 12A and 13A of the wires 12 and 13. As a result, when the body pressure from the seated person is applied to the planar body 11, the support received from the front and rear sides of the central portion of the planar body 11 is weak. It has a configuration that cannot be demonstrated. However, the above-described curing member 14A is joined to the central portion of the planar body 11, so that a high support pressure can be exhibited even if the support received from the front and rear sides is weak as described above. Can be done.

  In summary, the sheet 1 of the present embodiment has the following configuration. That is, the vehicle seat (seat 1) includes a seat frame (cushion frame 3F) and a planar support member (planar support member 10) that is stretched on the seat frame and supports the body of the seated person. Curing members (curing members 14A and 14B) that partially increase the support pressure of the planar support member can be integrally bent at the sheet width direction center portion and both edge portions of the planar support member. It is provided as a state. With such a configuration, the support pressure of the planar support member can be partially increased in the region where the curing member is provided (region A1 where the support pressure is high). Specifically, the support pressure in the vicinity of the high seating pressure region (high seating pressure region PA) where the seated person's sciatic tuberosity is located is obtained by partially increasing the support pressure at the center and both edges of the sheet width direction of the planar support member. While the pressure is moderated appropriately, it is possible to make the planar support member difficult to be left and right when cornering the vehicle.

  Further, the curing members (curing members 14A and 14B) deviate from the high sitting pressure region (high sitting pressure region PA) in which the seated person's sciatic tuberosity is located in the sheet width direction region of the planar support member (planar support member 10). Provided in the area. With such a configuration, it is possible to more appropriately relieve the support pressure in the vicinity of the high sitting pressure region where the seated person's sciatic tuberosity is located.

  Further, the curing members (curing members 14A and 14B) straddle the high seating pressure region (high seating pressure region PA) in a direction perpendicular to the sheet width direction in the in-plane direction of the planar support member (planar support member 10). It is provided as an extended state. With such a configuration, it is possible to more appropriately suppress the movement of the planar support member that is particularly large in the high seat pressure region when the vehicle is cornering.

  Further, the curing members (curing members 14A and 14B) are provided so as to protrude on the surface of the planar support member (planar support member 10) that receives the body pressure from the seated person. With such a configuration, when the seat pad (cushion pad 3P) that elastically supports the seated person's body is provided on the surface of the planar support member, the curing member is placed on the seat pad from the back side. It becomes the structure pressed down partly strongly, and the lateral shift of a seat pad can be prevented appropriately.

  Further, a planar support member (planar support member 10) is stretched between the front and rear frames (front pipe 3Fc and rear pipe 3Fd) of the seat cushion (seat cushion 3) constituting the seat frame (cushion frame 3F). It is set as the structure. The planar support member includes a flexible planar body (planar body 11) and cylindrical through portions (through portions 11A and 11B) formed on the front and rear edges of the planar body. And front and rear wires (wires 12 and 13) that are attached to the corresponding front and rear frames through the sheet width direction. Openings (openings 11Aa and 11Ba) are formed in the central portion in the sheet width direction of at least one of the through portions (both), and the corresponding wires passed through the one are exposed to the outside. As described above, an opening for exposing the corresponding wire to the outside is formed at the central portion of at least one of the through portions, thereby supporting pressure on the line of the planar support member in which the opening is formed. Will drop. However, a decrease in the support pressure can be prevented by providing the curing member (curing member 14A) on the center line of the planar support member.

  Further, the planar body (planar body 11) is made of a fabric material processed into a cloth shape having a uniform structure. As described above, even when a general fabric material having a uniform structure is applied as the planar body, the support pressure of the planar support member (planar support member 10) is partially set according to the body pressure distribution of the seated person. It can be changed easily.

  Then, the structure of the sheet | seat 1 (vehicle seat) of Example 2 is demonstrated using FIG. In the present embodiment, the respective curing members 14A and 14B are provided in a state of being integrally joined to the back side surface (lower side surface in the drawing) of the planar body 11 by integral molding. With the above configuration, each of the curing members 14A and 14B is configured not to protrude from the front side surface (upper side surface in the drawing) of the planar body, so that it is possible to make the seated person feel less foreign. Since the configuration other than the above is the same as that of the sheet 1 shown in the first embodiment, the same reference numerals are given and the description thereof is omitted.

  As mentioned above, although embodiment of this invention was described using two Examples, this invention can be implemented with various forms other than the said Example. For example, the “vehicle seat” of the present invention can be applied to a seat other than the right seat of an automobile, and is also used for vehicles other than automobiles such as railways, and other vehicles such as airplanes and ships. It can be widely applied to sheets.

  Moreover, the structure of this invention is applicable also to other seat structural members, such as a seat back, a headrest, and an ottoman, besides a seat cushion. Further, the planar support member that is stretched on the seat frame and supports the body of the seated person may be bridged and stretched in the seat width direction with respect to the seat frame. The planar support member may be provided so as to receive the seated person's body without using a seat pad that elastically supports the seated person's body. Further, the edge portions on both sides in the seat width direction of the planar support member on which the curing member is provided are the edges in the seat width direction in the support range in which the planar support member supports the body of the seated person. However, it does not necessarily indicate the edge in the overall shape of the planar support member.

  Further, the curing member only needs to function so as to increase the support pressure of the planar support member, and a planar material, a rubber material, a metal material, or the like that can function to make the planar body difficult to expand. Further, it may be made of a material other than resin. Further, the curing member is integrally provided with the planar body in addition to the one that is integrally bonded to the planar body, and is formed integrally with the planar body by forming a cylindrical through portion in the planar body and passing through the inside. You may provide as a state which can bend. The said hardening member is not necessarily what consists of a shape extended elongate along the in-plane direction of a planar body, but is provided continuously or intermittently only in a part in the in-plane direction of a surface state. There may be.

  In addition, the hardening member may be provided with a different shape or a different material depending on a portion where the hardening member is provided. For example, a resin-made curing member is disposed at the center of the sheet-like support member in the sheet width direction, and a bag-shaped cylindrical through-hole is formed at the edges on both sides, and a metal wire is formed therein. Various different combinations of configurations are possible, such as passing a curing member made of Further, in order to prevent the support pressure at the boundary between the region where the curing member is disposed and the region where the curing member is not disposed in the planar support member from being extremely changed, the cross-sectional shape of the curing member is disposed. The shape may be tapered so as to taper toward the region where the curing is not performed, or the curing member may be cantilevered so as to project in a cantilevered manner toward the region where the curing member is not disposed.

1 seat (vehicle seat)
2 Seat back 3 Seat cushion 3F Cushion frame (seat frame)
3Fa Side frame 3Fb Front panel 3Fc Front pipe (front frame)
3Fd Rear pipe (rear frame)
3P Cushion pad 3C Cushion cover 4 Slide rail 5 Seat lifter 5A Front link 5B Rear link 10 Planar support member 11 Planar body 11A Through part 11Aa Open part 11B Through part 11Ba Open part 12 Wire 12A Insert part 12B Hook part 12C Coating material 13C Wire 13A Insertion part 13B Hook part 13C Coating material 14A Curing member 14B Curing member PA High seating pressure area A1 High support pressure area A2 Low support pressure area L Span

Claims (5)

A vehicle seat having a seat frame and a planar support member that is stretched over the seat frame and supports the body of a seated person,
In a central portion in the sheet width direction and both side edges of the flat-type supporting member, hardened member to increase the support pressure of the flat-type supporting member partially is provided in a state where it can flex integrally ,
All the said hardening members are provided in the form protruded on the surface of the side which receives the body pressure from the seated person of the said planar support member . The vehicle seat according to claim 1,
The vehicle seat, wherein the curing member is provided in a region deviating from a high seating pressure region in which a seated person's sciatic nodule is located in a region in the seat width direction of the planar support member. The vehicle seat according to claim 2,
The vehicle seat, wherein the curing member is provided in a state where the high seating pressure region extends across a direction perpendicular to a sheet width direction in an in-plane direction of the planar support member. The vehicle seat according to any one of claims 1 to 3,
The planar support member is configured to be stretched between the front and rear frames of the seat cushion constituting the seat frame, and includes a flexible planar body and front and rear sides of the planar body. Each of the front and rear wires attached to the corresponding front and rear frames passing in the width direction of the seat along each cylindrical passage formed at the edge, and each of the through portions A vehicle seat in which an opening that exposes the corresponding wire that is passed through one of the at least one of the central portions in the sheet width direction is formed. The vehicle seat according to claim 4,
The planar body is made of a fabric material processed into a cloth shape having a uniform structure.
Vehicle seat.

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