JP6171979B2 - 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 planar support body that is assembled to a seat frame and supports a passenger's load.

  2. Description of the Related Art Conventionally, in a vehicle seat, a sheet-like support that supports a seat pad from the back side is provided in a frame assembled in a frame shape of a seat cushion. The planar support is configured such that a flexible planar member is surrounded by an outer peripheral frame from the outer peripheral side, and a portion of the outer peripheral frame is hooked on the frame to be bridged in the frame. It is provided as.

JP 2010-253242 A

  However, in the above prior art, when an excessive load of a certain level or more is applied to the support body due to a lap on the seat cushion of the occupant, the planar member is excessively pulled and is not easily elastically restored to the initial state. There is a risk that it will be stretched. The present invention was devised as a solution to the above-mentioned problem, and the problem to be solved by the present invention is that a planar support that supports the load of the occupant is replaced with an excessive load due to the occupant's knees or the like. Even if it receives, it exists in allowing it to bend in the form which does not extend a planar member too much.

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

  1st invention is the vehicle seat which has a planar support body assembled | attached to a seat frame and supporting a passenger | crew's load. The support includes a flexible planar member that supports the load of the occupant and an outer peripheral frame that supports the planar member from the outer peripheral side. The outer peripheral frame has a first region part that is removed from one side of the support part that supports a partial region of the planar member from the outer peripheral side, and a second region part that is removed from the other side, respectively. The shape is bent into a shape that can be bent toward the center of the planar member. The outer peripheral frame is configured such that when a passenger's load is input to the planar member, the first region portion and the second region portion are bent, and the support portion is attracted to the planar member.

  According to the first aspect of the present invention, the outer peripheral frame that supports the planar member from the outer peripheral side is provided with the first region portion and the second region that are on both end sides of the support portion when a passenger's load is input to the planar member. Each of the region portions is bent toward the center of the planar member, and the support portion is pulled toward the planar member. Thereby, it can suppress that a planar member is extended | stretched excessively. Accordingly, the planar support that supports the load of the occupant can be bent in a form that does not excessively extend the planar member even when an excessive load is applied due to the occupant's knees.

  The second invention is the following configuration in the first invention described above. The first region portion and the second region portion of the outer peripheral frame are each bent into a shape that rises in the out-of-plane direction of the planar member, and an occupant's load is input to the planar member. Thus, the first region portion and the second region portion are bent in a direction in which the rising is laid down in such a manner that the support portion is attracted to the planar member.

  According to the second aspect of the present invention, when the occupant's load is input to the planar member, the outer peripheral frame causes the first region portion and the second region portion, which are both ends of the support portion, to lie up. It takes the form which bends in a direction and draws a support part to a planar member. Thereby, it can suppress that a planar member is extended | stretched excessively.

  The third invention is the following configuration in the second invention described above. The first region portion and the second region portion of the outer peripheral frame are each formed so as to rise toward the back side of the planar member.

  According to the third aspect of the invention, the first region portion and the second region portion of the outer peripheral frame are not easily bent in the load input direction in the initial region as the bending deformation progresses, and are easily bent from the intermediate region. Can be. Therefore, when an excessive load is applied to the planar member due to the occupant's knees, etc., the load applied to the planar member is appropriately prevented so that the planar member is not excessively stretched due to the bending deformation of the outer peripheral frame described above. Can be reduced.

  According to a fourth invention, in any one of the first to third inventions described above, the following configuration is adopted. The support portion of the outer peripheral frame is configured to support a region where the load of the occupant of the planar member is most strongly applied from both outer sides in the width direction.

  According to the fourth aspect of the present invention, the region supporting the occupant's buttocks becomes a region where a load is easily applied even when the occupant is kneeled, and therefore, a configuration in which excessive extension of the planar member can be suppressed in such a region. By providing, it can be set as the state which makes a planar member function optimally.

1 is a perspective view illustrating a schematic configuration of a vehicle seat of Example 1. FIG. It is an exploded perspective view showing the internal structure of a seat cushion. It is the disassembled perspective view which removed the support body from the cushion frame. It is a top view of a cushion frame. It is the V section enlarged view of FIG. It is a perspective view showing the state where the cushion frame was tilted up. It is the VII-VII sectional view taken on the line of FIG. It is the VIII-VIII sectional view taken on the line of FIG. It is sectional drawing showing the state to which the support body was bent by the input of seating load.

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

  First, the configuration of the sheet 1 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 driver's seat of an automobile, and includes a seat back 2 that serves as a backrest for a seated occupant and a seat cushion 3 that serves as a seating portion. It has become. The seat 1 has a so-called “power seat” configuration in which the backrest angle of the seat back 2 and the seating position of the seat cushion 3 can be adjusted by an electric operation by operating a switch, respectively. It has become.

  Specifically, the seat back 2 is in a state in which the lower end portions of the left and right sides thereof are connected to the rear end portions of the left and right sides of the seat cushion 3 via electric recliners (not shown). . As a result, the seat back 2 is normally held in a state in which the backrest angle is fixed by each of the above-described recliners (not shown), and the recliner is operated by operating an electric switch (not shown), so that the backrest angle is increased. It is set as the structure adjusted to the front-back direction.

  The seat cushion 3 is connected to a vehicle floor via a pair of left and right electric slide rails 4. As a result, the seat cushion 3 is normally held in a state in which the seating position is fixed by the slide rails 4 described above, and the seating position is adjusted by operating the slide rails 4 by operating an electric switch (not shown). It is set as the structure adjusted to the front-back direction.

  In addition, the seat cushion 3 is configured such that an electric seat lifter 5 is interposed between the pair of left and right slide rails 4 described above. As a result, the seat cushion 3 is normally held in a state in which the seating height position is fixed by the seat lifter 5, and the seating height is increased in the vertical direction by operating the seat lifter 5 by operating an electric switch (not shown). It is set as the structure adjusted to. In addition, the seat cushion 3 is configured such that an electric tilt mechanism 6 is provided at the front portion thereof. As a result, the seat cushion 3 is normally held in a state in which the support angle of the front part supporting the thigh of the seated occupant is fixed by the tilt mechanism 6 described above, and the tilt mechanism 6 is operated by operating an electric switch (not shown). By operating, the support angle of the front portion is adjusted in the height direction (see FIG. 6).

  As described above, the seat 1 is configured to adjust the backrest angle of the seat back 2 (front and rear two directions), adjust the seating position of the seat cushion 3 (front and rear two directions and upper and lower two directions), and adjust the front of the seat cushion 3. The support angle can be adjusted (up and down 2 directions), and so-called “8 way” can be adjusted in 8 directions. These adjustment operations are performed by operating an electric switch (not shown) provided at a predetermined location such as a side portion of the seat cushion 3 on the vehicle outer side (left side as viewed in FIG. 1).

  Here, as shown in FIGS. 1 to 2, the above-described seat cushion 3 is covered with a metal cushion frame 3 </ b> F that constitutes a skeleton inside the seat cushion 3 and the cushion frame 3 </ b> F so as to cover the whole from above. The cushion pad 3P made of urethane foam that softly receives the seating load of the occupant, the cushion cover 3C made of cloth covering the entire surface of the cushion pad 3P, and the seating load of the occupant assembled in the cushion frame 3F And a support 10 to be supported. Here, the cushion frame 3F corresponds to the “seat frame” of the present invention.

  As shown in FIGS. 2 to 4, the cushion frame 3 </ b> F described above is configured in a square frame shape along the outer peripheral shape of the seat cushion 3. Specifically, the cushion frame 3F includes a pair of left and right side frames 3Fa, and a front panel 3Fb that is bridged between the front end portions of the side frames 3Fa and supports the thigh of the seated occupant from below. A metal round pipe (rear pipe 5D) passes through in the seat width direction and is axially connected between the rear end portions of each side frame 3Fa so that the whole is assembled in a square frame shape in plan view. Yes.

  Each of the side frames 3Fa described above is formed of a single pressed steel plate material, cut into a long plate shape in the front-rear direction, and disposed with the surfaces facing inward of the sheets. It is said that it was in the state. Each of the side frames 3Fa has a structure in which the upper edge portion and the lower edge portion thereof are bent toward the inside of the seat to increase the structural strength against bending and twisting.

  The front panel 3Fb is formed of a single pressed steel plate material in the same manner as each of the side frames 3Fa described above, and is cut into a plate shape that is long in the sheet width direction, and has a surface on the upper side of the sheet. It is set as the state arrange | positioned. The front panel 3Fb has its front edge and both right and left edges bent to the lower side of the seat to enhance the structural strength against bending and twisting, and has an edge on the upper side and the outer peripheral side of the seat. It is the structure formed in the shape which is not. Further, the front panel 3Fb is formed such that the rear half region of the central portion in the sheet width direction is inclined downward. Thereby, the front panel 3Fb is in a state formed to be able to support the thighs of the seated occupant with a forwardly rising angular posture.

  The front panel 3Fb has long plate-shaped tilt panels 3Fc extending to the rear side of the seat at the respective left and right edges thereof, and each side frame 3Fa is connected to each side frame 3Fa by the rotation shaft 3Fc1 via the tilt panel 3Fc. The shaft is rotatably connected to the middle part in the front-rear direction. Thereby, the front panel 3Fb is set in a state in which the front panel 3Fb can be rotated in the height direction about the rotation shafts 3Fc1 described above with respect to the side frames 3Fa. The tilt mechanism 6 can adjust the support angle for supporting the thigh of the seated occupant in the height direction by rotating the front panel 3Fb in the height direction with respect to the side frames 3Fa by the movable structure. Is configured. The tilt mechanism 6 operates (tilt operation) by driving of a driving device 6A provided on the inner side of the side frame 3Fa outside the vehicle shown on the left side in FIG.

  The seat lifter 5 integrally connects a pair of left and right front links 5A, a pair of left and right rear links 5B, a front pipe 5C integrally connecting intermediate portions of the front links 5A, and upper ends of the rear links 5B. Thus, the rear pipe 5D is connected to each side frame 3Fa so as to be rotatable with respect to each side frame 3Fa, and the gear mechanism 5E is configured to transmit a rotational driving force and a braking force to the rear link 5B on the outer side of the vehicle. ing.

  Each of the front links 5A described above is disposed on the inner side (the seat inner side) of the side frame 3Fa on each side. Each front link 5A has an upper end portion rotatably connected to the side frame 3Fa on each side by a connecting shaft 5A1, and a lower end portion that is an upper portion of the slide rail 4 on each side by a connecting shaft 5A2. It is made into the state connected with the shaft so that rotation was possible. Each front link 5A has a middle portion bent in a crank shape in the seat width direction, and an end portion on each side of the front pipe 5C is inserted into each portion of the bent step. Thus, they are firmly joined together by welding. Thereby, each front link 5A can be rotated integrally with each other via the above-described front pipe 5C, and the structure strength against bending and twisting is increased.

  Each rear link 5B is also arranged inside the side frame 3Fa on each side (the seat inside). Each rear link 5B has an upper end portion rotatably connected to a side frame 3Fa on each side via a rear pipe 5D, and a lower end portion connected to each side of the slide rail 4 by a connecting shaft 5B2. A shaft is rotatably connected to the upper part. Specifically, the above-described rear pipe 5D is inserted through the side frames 3Fa on each side and the upper ends of the rear links 5B arranged on the inside thereof in the seat width direction, and each side frame 3Fa. Is simply inserted in the seat width direction and rotatably connected to the shaft, and the upper end of each rear link 5B is firmly and integrally connected by welding. Thus, the rear links 5B can be rotated integrally with each other via the above-described rear pipe 5D, and the structural strength against bending and twisting is increased.

  Of the rear links 5B, a gear mechanism 5E including a driving device 5F for transmitting a rotational driving force to the rear link 5B is connected to the rear link 5B outside the vehicle. In the seat lifter 5, the rear link 5B and the front link 5A on each side are simultaneously rotated or stopped by the rotational driving force and the braking force transmitted from the gear mechanism 5E to the rear link 5B outside the vehicle. Thus, the seating height of the seat cushion 3 is changed or fixed.

  As shown in FIGS. 2 to 4, the support body 10 is provided in the frame of the cushion frame 3 </ b> F, and the cushion pad 3 </ b> P assembled to the upper portion thereof is widely supported from the lower side by a surface so that the seating load of the passenger is It is configured to accept softly. The support 10 described above is bent into a substantially U shape that supports a flexible surface-like cloth material 11 cut into a rectangular shape and a rear region (a support surface region 11A described later) of the cloth material 11 from the outer peripheral side. The outer peripheral frame 12 and the core member 13 passed through the front edge portion of the cloth material 11. Here, the cloth material 11 corresponds to the “planar member” of the present invention.

  In the cloth material 11 described above, the left and right support portions 12A extending in the front-rear direction of the outer peripheral frame 12 are passed through the side through portions 11A1 formed on the left and right sides of the rear region (support surface region 11A). It is set as the state, and it is set as the structure maintained by the state by which the rear part area | region (support surface area | region 11A) was stretched | stretched by support by these support parts 12A. Each side passage portion 11A1 of the cloth material 11 described above has a fin portion extended in the width direction of each side passage portion 11A1 in a state where the respective support portions 12A of the outer peripheral frame 12 are respectively applied to these surface portions. By folding back to the front side and sewing it in a bag shape on the surface portion of the cloth material 11, each support portion 12 </ b> A of the outer peripheral frame 12 is sewed in the front-rear direction.

  The cloth material 11 described above is in a state in which a rod-shaped core member 13 extending straight in the width direction is passed through a front-side through portion 11B1 formed at the front edge portion of the cloth member 11. Through the cushion frame 3 </ b> F and is placed on the front panel 3 </ b> Fb. The above-described front-side passage portion 11B1 of the cloth material 11 has the fin portion extended to the front side of the front-side passage portion 11B1 folded back to the front side in a state where the core member 13 is applied to the same portion from the front side. By sewing in a bag shape on the surface portion, the core member 13 is sewed in a state where the core member 13 is passed in the width direction.

  The cloth material 11 described above is attached to the side frame 3Fa and the rear pipe 5D on each side of the cushion frame 3F through the outer peripheral frame 12 as a support surface region 11A in the rear region supported by the outer peripheral frame 12 from the outer peripheral side. And supported. Further, the cloth material 11 is supported by a front region extending forward from the support surface region 11A as an extended surface region 11B attached to the front panel 3Fb of the cushion frame 3F via the core member 13 described above. It is in a state. The extension surface region 11B is a region that extends forward from the support surface region 11A, and is therefore a region that cannot be supported (hangs down) by supporting the outer peripheral frame 12 alone.

  The outer peripheral frame 12 is formed by bending one steel wire into a substantially U shape in plan view. The outer peripheral frame 12 has a front end and a rear end that are disengaged in the front-rear direction from each side passage portion 11A1 of the cloth material 11 of the pair of left and right support portions 12A extending in the front-rear direction. The sheet is formed in a state of being bent in the lower side of the sheet (the back side direction of the cloth material 11: the out-of-plane direction) (the front bent portion 12A1 and the rear bent portion 12A2). Here, the front bent portion 12A1 corresponds to the “first region portion” of the present invention, and the rear bent portion 12A2 corresponds to the “second region portion” of the present invention.

  As shown in FIGS. 1 to 5 and FIGS. 7 to 8, the front bent portions 12 </ b> A <b> 1 described above are ends that are detached forward from the side passage portions 11 </ b> A <b> 1 of the cloth material 11 of the support portions 12 </ b> A described above. It is formed in a shape that is bent obliquely forward and downward from the part to the outside in the sheet width direction. Further, each of the front bent portions 12A1 is bent in such a manner that the front end portion which is bent obliquely in the front lower outer direction extends further straight forward, and the front end portion 12B is The sheet is flatly crushed in the sheet width direction, applied to the inner surface of the side frame 3Fa on each side, and firmly joined together by welding (see FIG. 5).

  Moreover, as shown in FIGS. 1 to 4 and FIGS. 7 to 8, the rear bent portions 12A2 are disengaged rearward from the side passage portions 11A1 of the cloth material 11 of the support portions 12A described above. It is formed in a shape that is bent straight from the end portion to the sheet lower side. Further, each of the rear bent portions 12A2 is formed as a hook portion 12C having a shape in which a tip end portion bent downward is further bent back to the upper side of the seat and curved backward. Yes. These hook portions 12C are connected to the rear pipe 5D so as to allow the shaft rotation of the rear pipe 5D to escape by being fitted onto the rear pipe 5D of the cushion frame 3F from above.

  In the outer peripheral frame 12, the support portions 12 </ b> A that extend straight in the pair of left and right directions described above are passed through the side passage portions 11 </ b> A <b> 1 formed on the left and right side portions of the cloth material 11. The support surface region 11A is supported from both outsides. The outer peripheral frame 12 is attached to the side frames 3Fa and the rear pipe 5D of the cushion frame 3F as described above, so that the rear region (support surface region 11A) of the fabric material 11 is located with respect to the cushion frame 3F. And held in a state where it can be supported in a fixed position.

  Specifically, the outer peripheral frame 12 has a configuration in which each hook portion 12C described above is fitted and assembled on the rear pipe 5D of the cushion frame 3F from above, so that the rear pipe 5D is operated by the seat lifter 5. It is in a state of being assembled across the side frames 3Fa and the rear pipe 5D so as to allow the movement of the shaft to rotate at times. As a result, even when the outer peripheral frame 12 is assembled across the side frames 3Fa and the rear pipe 5D that rotate relative to each other, the cloth material 11 can be held in a fixed position without hindering the movement of the seat lifter 5. It is set as the structure which can be hold | maintained in the supported state.

  Each support portion 12A of the outer peripheral frame 12 described above has the entire area of the straight region between the front bent portion 12A1 and the rear bent portion 12A2 as described above. 11A1 is a state in which the support surface region 11A of the cloth material 11 is supported from both outer sides over a wide range in the front-rear direction. With this configuration, the cloth material 11 supported by the support portions 12A of the outer peripheral frame 12 has its side through portions 11A1 folded on the front side of the support portions 12A of the outer peripheral frame 12. The bent portion 12A1 and the rear bent portion 12A2 are regulated so as not to be displaced in the front-rear direction.

  The core member 13 is formed from the same steel wire material as the outer peripheral frame 12 described above. The said core member 13 is made into the state penetrated over the whole area of the width direction in the edge part (front side passage part 11B1) of the front side of the fabric material 11 mentioned above, The edge part (front side passage part 11B1) of the same side ) Are exposed to the outside through openings opened in various places. 2 to 4, the core member 13 described above is formed by cutting and raising the portions exposed to the outside from the various portions of the front through portion 11B1 described above on the front panel 3Fb of the cushion frame 3F. The hooks 3Fb1 are hooked from the front side to be assembled on the front panel 3Fb.

  By the hooking of the core member 13, the above-described front region (extended surface region 11 </ b> B) that is not supported by the outer peripheral frame 12 of the cloth material 11 is assembled and supported by the front panel 3 </ b> Fb. Specifically, the cloth material 11 is in a state in which the front region (extended surface region 11B) rides on the front panel 3Fb by hooking the front edge through the core member 13 to the front panel 3Fb. The front panel 3Fb is connected to the front panel 3Fb so as to form a continuous surface shape.

  The extending surface region 11B of the cloth material 11 described above has the front edge attached to the front panel 3Fb via the core member 13 described above, so that the cushion frame 3F is operated by the operation of the tilt mechanism 6 described above. The front panel 3Fb is affected by the movement of moving the front panel 3Fb up and down relative to the side frames 3Fa. Specifically, as shown in FIGS. 6 to 7, the cloth material 11 is supported while the support surface region 11 </ b> A supported by the outer peripheral frame 12 is assembled to each side frame 3 </ b> Fa. Since the extended surface area 11B deviating from the surface area 11A is assembled to the front panel 3Fb, the front panel 3Fb moves up and down by a tilt operation, so that the extended surface area 11B is in the height direction with respect to the support surface area 11A. It is configured to be moved by.

  However, the cloth material 11 can bend and follow the movement of the front panel 3Fb due to the flexibility of the extended surface region 11B with respect to the above movement. The state continuously connected to the front panel 3Fb can be maintained without hindering the tilting operation. Specifically, the cloth material 11 bends and deforms in a manner in which the extending surface region 11B changes the inclination angle with the boundary line 11C between the extending surface region 11B and the support surface region 11A as the front panel 3Fb tilts. It is like that.

  The above-described boundary line 11C is a line that connects the edge portions on the front end side of each side passage portion 11A1 formed on the left and right sides of the support surface region 11A of the cloth material 11, and is supported by the outer peripheral frame 12. This is a line that forms a boundary between the portion (support surface region 11A) and the other portion (extended surface region 11B). As shown in FIG. 7, the boundary line 11C is set to a position immediately below the rotation shaft 3Fc1, which is the center of rotation when the front panel 3Fb is tilted.

  The cloth material 11 can maintain a tensioned state between the front panel 3Fb and the support surface region 11A even when the front panel 3Fb is tilted due to its own stretchability. Yes. Note that the cloth material 11 may be formed of a material that does not have elasticity. In that case, the front panel 3Fb and the support surface region 11A are not slackened in the extended surface region 11B so that the extended surface region 11B is not excessively stretched by the tilting operation of the front panel 3Fb. It ’s a good idea to hang it around.

  The cloth material 11 described above has a state in which the rear side region that supports the buttocks of the seated occupant is disposed at a low position near the lower edge of each side frame 3Fa of the cushion frame 3F as the support surface region 11A described above. Thus, even if the front panel 3Fb described above is tilted, the position with respect to each side frame 3Fa does not change and is maintained at a fixed position. Here, the support surface region 11A of the cloth material 11 described above corresponds to the “region where the load of the occupant is most strongly applied” of the present invention. On the other hand, the region on the front side that supports the thigh of the seated occupant of the cloth material 11 described above is the extended surface region 11B described above, and the rear edge thereof is supported by the outer peripheral frame 12 described above. It is supported by the surface region 11A, and is provided in a state where the front edge is supported by the front panel 3Fb.

  As a result, when the front panel 3Fb tilts, the extended surface region 11B of the cloth material 11 has a rear edge (the boundary line 11C described above) as a broken line, and the shape of the extended surface area 11B is flexed according to the movement of the front panel 3Fb. You can do it. By this bending deformation, the cloth material 11 extends between the support surface region 11A that is held at a fixed position even when the front panel 3Fb is tilted and the front panel 3Fb whose height position is changed by the tilting operation. The movement of the front panel 3Fb can be released while maintaining the shape smoothly connected by the region 11B.

  The support 10 described above receives the load on the support surface region 11A and the extended surface region 11B of the cloth material 11 when the seat cushion 3 is subjected to the seating load of the occupant, and extends the cloth material 11 or the cloth material. The outer peripheral frame 12 that supports the 11 support surface regions 11A is bent while the load is softly received.

  Specifically, as shown in FIG. 8, the support 10 has the support portions 12 </ b> A of the outer peripheral frame 12 that support the support surface region 11 </ b> A of the cloth material 11 from both outer sides in the width direction. In addition, the front side bent portion 12A1 and the rear side folded portion, in which the front side end portion and the rear side end portion which are disengaged in the front-rear direction from the respective side passage portions 11A1 of the cloth material 11, are bent to the lower side of the seat, respectively. The bent portion 12A2 is formed. With this configuration, the support 10 has the support surface region 11A formed by inputting the seating load of the occupant to the support surface region 11A of the cloth material 11, as shown in FIG. Each support portion 12 </ b> A of the outer peripheral frame 12 supported from both outer sides in the width direction is bent and deformed in a manner of being pulled inward in the width direction by the cloth material 11.

  Specifically, the outer peripheral frame 12 has a front bent portion 12A1 and a rear bent portion 12A that support each support portion 12A at each of the front and rear ends when a load is input to the support surface region 11A of the cloth material 11. The bent portions 12A2 are bent by the cloth material 11 so as to be pulled down (laid down) so as to be drawn inward in the sheet width direction, and each support portion 12A is drawn toward the inner side in the sheet width direction. Yes. As a result, the distance in the sheet width direction between the two support portions 12A is shortened, and the stretching force in the sheet width direction of the support surface region 11A of the cloth material 11 is relaxed. Therefore, even when the cloth material 11 receives the above load and is bent downward, the cloth material 11 is prevented from being excessively stretched due to the relaxation caused by the reduction in the distance between the two support portions 12A. Is done.

  Therefore, for example, even when a local heavy load is input to the seat cushion 3 such as when an occupant is kneeling, the support body 10 that has received this load causes the cloth material 11 to be removed as described above. Since it can bend in a mode in which it does not extend excessively, it is difficult to cause a problem (the problem that the cloth material 11 is plastically deformed) that the cloth material 11 is not easily restored to the initial state after a large load is removed. Therefore, even after a large load as described above is input, the cloth material 11 can be quickly and elastically restored to the initial state, and the support 10 can always support a stable load.

  More specifically, the front-side bent portion 12A1 and the rear-side bent portion 12A2 that support the support portions 12A of the outer peripheral frame 12 respectively rise toward the back side (the sheet lower side) of the cloth material 11 respectively. By being bent into the shape, the bending deformation is advanced in the following manner. That is, each of the front bent portion 12A1 and the rear bent portion 12A2 largely displaces each support portion 12A mainly inward in the seat width direction due to their falling deformation in the initial bending region. The lower side of the seat is not displaced so much. However, each of the front bent portion 12A1 and the rear bent portion 12A2 has a lower end portion serving as a support point and an upper end portion serving as a load input point (each support portion) as the bending deformation progresses. 12A) increases in distance in the width direction (the amount of eccentricity), so that it is easy to receive a large bending load with respect to the input load, and the downward deflection direction component increases. Thereby, each said front side bending part 12A1 and rear side bending part 12A2 are set as the structure which becomes easy to bend to the sheet | seat lower side, so that the said fall-down deformation progresses. Thus, the load applied to the cloth material 11 can be appropriately reduced so that the cloth material 11 is not excessively stretched.

  Next, the configuration of the cushion pad 3P will be described with reference to FIG. The cushion pad 3P is formed by foaming a flexible polyurethane foam material. The cushion pad 3P is assembled to the upper part of the cushion frame 3F described above, so that each frame portion (the side frames 3Fa, the front panel 3Fb, and the rear pipe 5D) of the cushion frame 3F and the support body 10 described above from the lower side. It is designed to be widely supported on the surface. Specifically, the cushion pad 3P is in a state of being firmly supported from below by the outer peripheral portion supported by each frame portion of the cushion frame 3F described above, and by the cloth material 11 of the support body 10 described above. In the supported center part, it is made into the state elastically softly supported from the lower side by the tension | tensile_strength of the cloth material 11. FIG.

  Specifically, the cushion pad 3P described above is assembled and set from above so that each frame portion (each side frame 3Fa, front panel 3Fb, and rear pipe 5D) of the cushion frame 3F is covered from the outer periphery side of the seat. Has been. Then, after the cushion pad 3P is assembled to the upper part of the cushion frame 3F, the cushion cover 3C is applied from the upper side so as to cover the entire surface (the seating surface and the front, rear, left and right side surfaces). Each peripheral portion of 3C is pulled and fixed to the bottom of the cushion frame 3F, so that each frame portion (each side frame 3Fa, front panel 3Fb, and rear pipe 5D) of the cushion frame 3F is applied by the tension of the cushion cover 3C. ) It is set in a state where it is firmly pressed and attached in close contact.

  In detail, the cushion pad 3P described above is in a state where the front part 3Pa is assembled and supported so as to cover the front panel 3Fb of the cushion frame 3F described above from the front side and the upper side, respectively, and the rear part 3Pc is supported. The rear pipe 5D of the cushion frame 3F is assembled and supported so as to cover the rear side and the upper side, respectively. By the above assembly, the cushion pad 3P is appropriately softened from the lower side by the support surface region 11A of the cloth material 11 of the support body 10 so that the center buttocks support section 3Pb that receives strong body pressure from the buttocks of the seated occupant is soft. Although it is configured to be received, the outer peripheral portion thereof is held in a state of being strongly and stably supported from below by the frame portions (the side frames 3Fa, the front panel 3Fb, and the rear pipe 5D) of the cushion frame 3F described above. It is like that.

  Thus, the seat 1 of the present embodiment is configured to have the planar support 10 that is assembled to the cushion frame 3F (seat frame) and supports the load of the occupant. The support 10 includes a flexible cloth material 11 (planar member) that supports the load of the occupant and an outer peripheral frame 12 that supports the cloth material 11 from the outer peripheral side. The outer peripheral frame 12 is disengaged from the front side bent portion 12A1 (first region portion) and the rear side of each supporting portion 12A that supports both side regions of the cloth material 11 from the outer peripheral side. Each of the rear bent portions 12A2 (second region portions) is bent into a shape that can be bent toward the center of the cloth material 11. The outer peripheral frame 12 is configured such that when the occupant's load is input to the cloth material 11, the front bent parts 12 </ b> A <b> 1 and the rear bent parts 12 </ b> A <b> 2 are bent and the support parts 12 </ b> A are attracted to the cloth material 11. It has become.

  With such a configuration, the outer peripheral frame 12 that supports the fabric material 11 from the outer peripheral side becomes the front side that becomes the front and rear end portions of each support portion 12 </ b> A when an occupant's load is input to the fabric material 11. The bent portion 12A1 and the rear bent portion 12A2 are bent toward the center of the cloth material 11, and the support portions 12A are pulled toward the cloth material 11. Thereby, it can control that cloth material 11 is extended too much. Therefore, even if the planar support body 10 that supports the load of the occupant is subjected to an excessive load due to the occupant's knees or the like, the cloth material 11 can be bent in a form that does not excessively expand.

  Specifically, the front bent portion 12A1 and the rear bent portion 12A2 of the outer peripheral frame 12 are each bent into a shape that rises in the out-of-plane direction (sheet height direction) of the cloth material 11. The direction in which the front bent portion 12A1 and the rear bent portion 12A2 lie up in such a manner that the respective support portions 12A are attracted to the cloth material 11 when the occupant's load is input to the cloth material 11. It is designed to be bent. With this configuration, when the occupant's load is input to the cloth material 11, the outer peripheral frame 12 has the front bent portion 12 </ b> A <b> 1 and the rear side that are the front and rear ends of each support portion 12 </ b> A. Each of the bent portions 12A2 is bent in the direction in which the rising is laid down, and each support portion 12A is drawn to the cloth material 11. Thereby, it can control that cloth material 11 is extended too much.

  More specifically, the front bent portion 12A1 and the rear bent portion 12A2 of the outer peripheral frame 12 are formed so as to rise toward the back side (the sheet lower side) of the cloth material 11, respectively. With such a configuration, the bending portion 12A1 on the front side and the bending portion 12A2 on the rear side of the outer peripheral frame 12 are not easily bent in the input direction in the initial region as the bending deformation progresses. , It is possible to bend easily from the middle region. Therefore, when an excessive load is applied to the cloth material 11 due to the occupant's knees or the like, the load applied to the cloth material 11 is appropriately prevented so that the cloth material 11 is not excessively stretched due to the bending deformation of the outer peripheral frame 12 described above. Can be reduced.

  Each support portion 12A of the outer peripheral frame 12 is configured to support a region (support surface region 11A) where the load of the occupant of the cloth material 11 is most strongly applied from both outer sides in the width direction. With this configuration, the region that supports the occupant's buttocks becomes a region where a load is easily applied even when the occupant has a knee, and thus, a configuration in which excessive stretching of the cloth material 11 can be suppressed in such a region. By providing, the cloth material 11 can be brought into a state where it can function optimally.

  As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, the “vehicle seat” of the present invention can be applied to seats other than the driver's seat of an automobile, and is used for vehicles other than automobiles such as railways, and other vehicles such as airplanes and ships. It can be widely applied to sheets.

  Further, the “support” of the present invention may be one that is assembled to the seat frame and configured to support the load of the occupant, and may be one that is applied to the seat back in addition to the seat cushion. .

  In addition to the cloth material, the “planar member” may be made of a flexible planar material that can support the load of the occupant, such as a leather material (a genuine leather, a synthetic leather, an artificial leather, or the like). Further, the “outer peripheral frame” may be configured to support the planar member from the outer peripheral side, and may support any region on the outer periphery. Further, the support of the planar member by the outer peripheral frame is not limited to the support of the planar member from the outer peripheral side by passing the outer peripheral frame through the bag-like through portion formed at the edge of the planar member. It may be integrally bonded to a partial region of the planar member by welding or the like to support the planar member from the outer peripheral side.

  Further, the “peripheral frame” may be assembled to the seat frame in any form such as welding, fastening with a pin, or hooking with a hook. In addition, as the shape that allows the first region portion and the second region portion of the outer peripheral frame to be bent toward the center of the planar member, each region portion is planar as shown in the above embodiment. Various bent shapes such as a member bent in an in-plane direction, a member bent in an in-plane direction, and a member bent in a bellows shape can be used. Moreover, in the said Example, although the 1st area | region part and 2nd area | region part which were mentioned above each formed in the form which stands | starts up toward the back side of a planar member, these were planar members. It may be formed so as to rise toward the front side.

1 seat (vehicle seat)
2 Seat back 3 Seat cushion 3F Cushion frame (seat frame)
3Fa Side frame 3Fb Front panel 3Fb1 Hook claw 3Fc Tilt panel 3Fc1 Rotating shaft 3P Cushion pad 3Pa Front 3Pb Bottom support 3C Cushion cover 4 Slide rail 5 Seat lifter 5A Front link 5A1 Connecting shaft 5A2 Connecting shaft 5B Rear link 5B 5D Rear pipe 5E Gear mechanism 5F Drive device 6 Tilt mechanism 6A Drive device 10 Support body 11 Cloth material (planar member)
11A Support surface area (area where occupant's load is most strongly applied)
11A1 Side passage portion 11B Extension surface region 11B1 Front side passage portion 11C Boundary line 12 Outer frame 12A Support portion 12A1 Front side bent portion (first region portion)
12A2 Rear bent part (second region part)
12B End 12C Hook 13 Core member

Claims (2)

A vehicle seat having a seat frame that forms a skeleton of a seat cushion, and a planar support that is assembled to the seat frame and supports a load of an occupant,
The support body has a flexible planar member that supports the load of the occupant, and an outer peripheral frame that supports the planar member from the outer peripheral side,
The peripheral frame, the support portion extending in the front-rear direction for supporting a sheet width direction of the side regions of the said planar member, out into the first region portion and the rear side in an off before hand side from the side areas second area portion and are, respectively, a shape bent in the form that rising toward the lower side of the out-of-plane direction of the planar member,
The first region portion is bent in such a manner that the downward bending thereof is an oblique bending outward in the sheet width direction, and the bent end portion further extends straight forward. It is configured to have a welded portion that is welded to the inner side surface of the side frame of the seat frame as a state where the tip is flatly crushed in the seat width direction,
The second region portion is bent straight down to the lower side of the sheet, folded back from the bent point toward the upper side of the sheet, and the tip of the second region is the sheet. It is configured to have a hook portion that is bent from the upper side and connected to the rear pipe of the seat frame that is curved rearward and extends inward in the seat width direction from the rear portion of the side frame,
When the occupant's load is input to the planar member, the first region portion and the second region portion are bent so as to lie down on the lower side of each of the first region portion and the second region portion inward in the seat width direction. The vehicle seat according to the aspect, wherein the support portion is drawn toward the center of the planar member. The vehicle seat according to claim 1,
The vehicle seat according to claim 1 , wherein the support portion of the outer peripheral frame is configured to support a region for supporting a collar portion of an occupant of the planar member from both outer sides in the seat width direction .

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