JP5935627B2 - Seat frame - Google Patents

Description

  The present invention relates to a seat frame.

  2. Description of the Related Art Conventionally, a vehicle seat is known in which a support wire for supporting a thigh of a seated occupant from the side is attached to a seat cushion frame (Patent Document 1). The support wire is formed in a frame shape that is bent in a crank shape in order to support the pads on both sides of the seat cushion in a state close to the surface from both outer sides. The seat cushion is integrally connected to the frame of the seat cushion.

Japanese Utility Model Publication No. 2-112196

  However, in the above prior art, the support wire attached to the frame of the seat cushion is provided exclusively to support the thigh of the seated occupant from the side, and so as to support the buttocks of the seated occupant from the side. Is not provided. The reason for this is that when the seated occupant is subjected to a lateral load, the thighs move laterally relatively, while the hips and hips move less sideways, and the side support that is hard on these areas with little lateral movement. For example, the support wire must be set at a site close to the buttocks, and the support wire cannot be set at an appropriate position according to the difference in the physique of the seated occupant. The present invention was devised as a solution to the above-mentioned problem, and the problem to be solved by the present invention is to provide a support member that can appropriately support the buttocks and the waist from the side with respect to the seat frame. There is to set.

In order to solve the above problems, the seat frame of the present invention takes the following means.
1st invention is a seat frame, Comprising: It has a support member which supports a seat occupant's buttocks or waist from the side. The support member is configured to have an elastic structure that elastically supports the hip or waist of the seated occupant from the side.

  According to the first aspect of the invention, the support member supports the seat occupant's buttocks or hips elastically from the side when receiving a lateral load. Due to its elastic structure, the support member absorbs the physique difference by elastic deformation even when the occupant's physique is large, and supports from the appropriate side that fits the shape of the hip or waist of the occupant The state can be taken. Therefore, even if the support member is provided close to these buttocks and waists with relatively little lateral movement so that the support function from the side can be satisfactorily exhibited, the buttocks and waists of various seated occupants with different physiques Can be appropriately supported from the side by the support member.

  The second invention is the following configuration in the first invention described above. The support member is constituted by a wire member integrally coupled to the seat frame. The wire member is configured to be provided with an elastic structure by providing a portion that supports the buttocks or waist of the seated occupant from the side so as to protrude from the coupling portion with the seat frame in a cantilevered manner.

  According to the second aspect of the invention, the support member can be formed of a wire member, so that the support member can be formed with light weight and high productivity. Further, by bending portions of the wire member, the strength of the elastic force exerted can be adjusted relatively easily.

  The third invention is the following configuration in the second invention described above. One end of the wire member is coupled to the front portion of the seat frame, and the thigh of the seated occupant is supported from the side by a portion near the fixed end extending from the one end.

  According to the third aspect of the invention, the thigh is supported from the side in addition to the buttocks of the seated occupant by the support member constituted by the wire member. Since the support from the side of the thigh is performed by a portion in the vicinity of the fixed end of the wire member, a high supporting force is exhibited by the wire member, and the support from the side of the thigh can be performed stably. .

  The fourth invention is the following structure in the third invention described above. Further, a support wire for supporting the thigh of the seated occupant from the side is attached to the seat frame separately from the support member.

  According to the fourth aspect of the invention, the thigh of the seated occupant can be supported more stably from the side.

1 is a perspective view illustrating a schematic configuration of a seat frame according to Embodiment 1. FIG. It is a perspective view which shows the external appearance of the vehicle seat. It is a principal part enlarged view of FIG. FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. It is sectional drawing which shows the state in which the person sat on the vehicle seat. It is a perspective view which expands and shows the principal part of the seat frame of Example 2. FIG. FIG. 6 is an enlarged cross-sectional view illustrating a main part of a seat frame according to a third embodiment.

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

  First, the configuration of the seat frame according to the first embodiment will be described with reference to FIGS. As shown in FIGS. 1 to 2, the seat frame of the present embodiment is configured as a cushion frame 10 that forms a framework of the seat cushion 3 of the vehicle seat 1 configured as a driver's seat of an automobile. The vehicle seat 1 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. The seat back 2 is connected to the rear end portions of the left and right sides of the seat cushion 3 via reclining devices (not shown) between the left and right sides of the seat back 2. It is provided as a state in which the angle can be freely adjusted in the front-rear direction.

  The seat cushion 3 is installed on the floor of the vehicle via a pair of left and right slide devices 4, and is provided in a state in which the position in the front-rear direction with respect to the floor can be adjusted by the operation of the slide devices 4. ing. The basic structure of each slide device 4 is the same as the known structure disclosed in the literature such as Japanese Patent Application Laid-Open No. 2010-221935. And

  The seat cushion 3 is covered so as to cover the entire surface of the cushion pad 20, the frame-shaped cushion frame 10 that forms the framework, the cushion pad 20 made of urethane foam set on the cushion frame 10, and the cushion pad 20. And a skin material 30 made of cloth. The cushion frame 10 includes a pair of left and right side frames 11 made of steel plates, a front panel 12 made of steel plates joined between the front end portions of the side frames 11 and the rear end portions of the side frames 11. It is the structure assembled | assembled by the square frame shape by the rear frame 13 made from the steel pipe spanned and couple | bonded.

  The cushion frame 10 includes a four-bar linkage mechanism in which both left and right side frames 11 are provided with a pair of front and rear elevating links 5A with respect to the pair of left and right slide devices 4 provided on the floor. The lifter mechanism 5 is connected via the lifter mechanism 5. Thereby, the cushion frame 10 is set as the structure which can adjust freely the height position with respect to a floor surface with the raising / lowering operation | movement of the lifter mechanism 5 accompanying the link motion of each raising / lowering link 5A mentioned above. The basic structures of the cushion frame 10 and the lifter mechanism 5 described above are the same as the known structures disclosed in Japanese Patent Application Laid-Open No. 2011-246024, and a description of specific configurations thereof will be omitted. I decided to.

  The cushion pad 20 is formed by foaming a flexible polyurethane foam raw material. The cushion pad 20 is provided by being set on the cushion frame 10 described above, so that each frame piece assembled in the square frame shape of the cushion frame 10 and 4 between the front and rear frame pieces. By the S spring 14 of the book, the wire member 15 attached to each of the left and right frame pieces, and the support wire 16, each is provided in a state of being supported in a state close to the surface from the lower side. As a result, the cushion pad 20 is elastically received from the lower side with respect to the buttocks and thighs of the seated occupant in a state where the cushion pad 20 is partly hard and partly elastically softly received. It is in a state provided so as to be received softly and stably. Here, the wire member 15 corresponds to the “support member” of the present invention, and the support wire 16 corresponds to the “support wire” of the present invention.

  As shown in FIG. 2, the cushion pad 20 described above is formed on both the left and right sides of the central portion 21, supporting the occupant's buttocks and thighs from below in the central portion 21 in the seat width direction. The side support portions 22 each having a shape bulging upward are configured to support the occupant's buttocks and thighs from both sides. The center portion 21 of the cushion pad 20 described above is assembled and set from above so as to straddle between the front panel 12 and the rear frame 13 of the cushion frame 10 described above, and spanned between them. The four S springs 14 arranged in the sheet width direction are provided as elastically supported in a state of being close to the surface from the lower side.

  Specifically, the central portion 21 of the cushion pad 20 described above includes a rear surface region portion 21A that supports the seat occupant's buttocks from below, and a front-up shape that supports the thigh of the seat occupant from below. The front region portion 21B is divided into front and rear portions. Since the front region 21B is formed in a front-up shape, the seat cushion 3 does not have an excessively wide thigh angle (hip angle) relative to the pelvis with respect to the posture of the seated occupant leaning on the seat back 2. As described above, the thigh is supported in a comfortable posture where the thigh is lifted upward.

  Further, as shown in FIG. 4, the left and right side support portions 22 of the cushion pad 20 are positioned directly above the side frames 11 of the cushion frame 10 described above and supported by the side frames 11 from below. It is provided as a state. These side support portions 22 are formed in a shape in which their back surface portions (lower surface portions) are rolled in a mountain shape along a shape in which the surface portion (upper surface portion) swells in a mountain shape. These side support portions 22 are set in such a manner that their respective back surface portions, which are formed in the above-described mountain shape, are placed directly above the respective side frames 11. Thereby, the cushion pad 20 has its center portion 21 set at a lower position with respect to the cushion frame 10, but each side support portion 22 swells in the height direction larger than the center portion 21 of the cushion pad 20. It is in the state provided in the state.

  Each side support portion 22 of the cushion pad 20 described above is supported by each side frame 11 from the lower side, in addition to the wire member 15 and the support wire 16 integrally attached to each side frame 11 (see FIG. 3). Are supported from both outer sides. Thereby, each side support part 22 is made into the state by which the support force for supporting a seated crew member's buttocks and thigh from both sides was heightened by the support structure by each wire member 15 and support wire 16 mentioned above. Yes.

  Next, the structure of the wire member 15 attached to each side frame 11 mentioned above and the support wire 16 is demonstrated. First, the configuration of each wire member 15 will be described. As shown in FIG. 3, each wire member 15 is formed of one thick steel wire material having high rigidity. These wire members 15 are formed to be bent in places in the sheet width direction and height direction, and their front end portions 15A are located on the upper surface portion of the front panel 12 near the ends in the sheet width direction. The end 15B on the rear side is welded and joined to each other, and is provided in a state where it is welded and joined to the outer surface portion of the side frames 11 near the center in the longitudinal direction of the seat.

  Each wire member 15 has (a) a portion (part P1) in the vicinity of a fixed end extending from the front end portion 15A coupled to the front panel 12 to be slightly rearward of the seat. (A) From there, it is bent into a shape that gently descends so as to be slightly inward toward the back of the seat (part P2), (c) From there, it is bent into a shape that is abruptly lowered so as to be slightly inward toward the seat rear side (part P3), and (d) from there, it is slightly inward toward the seat rear side. Is bent into a shape extending straight at an angle close to horizontal (part P4: lower piece part 15D2), and (e) from there, slightly outside the seat toward the upper side of the seat It is bent so as to suddenly rise up to an angle close to the vertical so as to be oriented (part P5), and (f) From there, it rises diagonally upward so that it is slightly outward toward the front of the seat Folded (part P6), (G) From there, it is bent in a shape extending straight at an angle close to horizontal so as to be slightly outward from the seat (part P7: upper piece part 15D1), (H) From there, it is bent so as to extend obliquely toward the front side of the seat while standing up slightly toward the upper side of the seat (part P8), (g) From there, on the upper surface of the side frame 11 Is folded to the outside of the seat so that it can be pulled straight out (part P9), and (e) from there is folded to the lower side of the seat and further folded forward. Bent by (site P10), the end of the earlier (rear end portion 15B), there is a state which is provided coupled to the position close to the upper edge of the outer surface of the side frame 11.

  The portions P1 to P3 in each wire member 15 formed by the above-described (a) to (c), together with the support wires 16 described later, are the thighs of the seated occupant in the side support portions 22 of the cushion pad 20 described above. It is applied to the inner peripheral surface of the back surface portion of the front region portion 22B supported from the side, and is configured as an outer overhanging portion 15C that supports the front region portion 22B of each side support portion 22 from the outside of the seat. Has been. Since these outer projecting portions 15C are formed at positions close to the front end 15A that is the fixed end of each wire member 15, they are considered to be hard portions that are relatively difficult to bend and deform, and together with each wire member 15, It functions so that the thighs of the seated occupant can be strongly supported from the side.

  Moreover, the site | parts P4-P7 in each wire member 15 formed of (d)-(ki) mentioned above are the back side area | region parts which support the seat passenger's buttocks in each side support part 22 of the cushion pad 20 mentioned above from the side. Each rear support portion 22D is configured as a rear overhanging portion 15D that elastically supports the rear region 22A of each side support portion 22 from the outside of the seat. . These rear projecting parts 15D are formed at positions far away from the front end part 15A coupled to the front panel 12 described above as a part that supports the seat occupant's buttocks from the side, and Since it is formed at a position projecting further rearward than the rear end 15B, it is provided in a state where it is supported in a cantilevered manner with respect to the front end 15A and the rear end 15B. It is assumed that Thereby, each rear side overhang | projection site | part 15D has the state provided in the state which is comparatively easy to bend in the sheet | seat width direction by using the front end part 15A and the rear end part 15B of each wire member 15 as a fulcrum. Has been.

  Specifically, each rear projecting portion 15D is formed such that each lower piece portion 15D2 extending from the front end portion 15A is far away from the front end portion 15A to the rear side. Since each upper piece portion 15D1 extending from the end portion 15B is formed at a position close to the rear end portion 15B, each lower piece portion 15D2 is relatively flexible, and each upper piece portion 15D1 is relatively difficult to bend. It is configured. Each of the lower piece portions 15D2 that is relatively easy to bend is provided in a state of being located on the inner side of the seat than each of the upper piece portions 15D1 that are not easily bent.

  As shown in FIG. 5, each of the wire members 15 configured as described above is provided when the occupant is seated on the seat cushion 3 or receives a lateral load in a state in which the occupant is seated due to the physique difference of the occupant. The rear side overhanging portion 15D is provided so as to support the buttocks of the seated occupant from the side by the elastic force of each rear side overhanging portion 15D. Specifically, when a standard body occupant is seated on the seat cushion 3, each wire member 15 is provided with a rear region 22 </ b> A of each side support portion 22 of the cushion pad 20 on both side portions of the buttocks. Thus, the hardness of the rear projecting portion 15D of each wire member 15 is close to the seat occupant's buttocks so that the seat occupant's buttocks with little lateral movement can be effectively supported from both sides. The position is set.

  As described above, each of the wire members 15 has the rear projecting portion 15D disposed at a position close to the buttocks of the seated occupant. The rear side overhanging portion 15D supports the occupant's buttocks from the side by its hardness, so that the lateral load and vibration transmitted from the vehicle side can be easily transmitted to the buttocks. The lateral load and vibration transmitted from the vehicle side can be easily transmitted to the occupant's buttocks, so that the driver can operate the steering wheel with good response. You can keep keeping.

  Each wire member 15 absorbs the physique difference by elastic deformation of each rear side overhanging part 15D even when a large occupant sits on the seat cushion 3, and each rear side overhanging part 15D can take an appropriate side support state that fits the shape of the buttocks of the seated occupant. Specifically, when an occupant with a large physique sits on the seat cushion 3 described above, the rear overhanging portion 15D of each wire member 15 is elastically pushed away to the outside of the seat by the body pressure applied from the buttocks of the occupant. Bends and deforms. Due to this bending deformation, each rear projecting portion 15D can take an appropriate side support state that fits the shape of the buttocks of the seated occupant.

  Specifically, the rear projecting portion 15D of each wire member 15 is such that the lower piece portion 15D2 is located on the inner side of the sheet than the upper piece portion 15D1, and is easily bent to the outer side of the seat. Therefore, when an occupant with a large physique sits down, each lower piece portion 15D2 located on the inside of the seat is greatly deflected to the outside of the seat, so that the physique difference of the occupant can be appropriately absorbed. And since each upper piece part 15D1 of each said back side overhang | projection part 15D is located in the sheet | seat outer side rather than each lower piece part 15D2, and it is harder to bend than each lower piece part 15D2, these The stiff part of the seat allows the seated occupant's buttocks to be properly supported from the side.

  Next, the configuration of each support wire 16 will be described with reference to FIG. Each support wire 16 is formed of one steel wire rod having a high rigidity and a thicker wire diameter than each wire member 15 described above. These support wires 16 have their front end portions 16A welded to and bonded to the upper surface portion of the front panel 12 near the end in the seat width direction, and the rear end portions 16B are seats of the side frames 11. It is provided as a state where it is welded and joined to the outer surface portion near the center in the front-rear direction. The front end portion 16A and the rear end portion 16B of each support wire 16 are arranged in substantially the same position along the front-rear direction with the front end portion 15A and the rear end portion 15B of each wire member 15 described above. It is in a state where it is connected and provided. Each of the fixed support wires 16 faces the outside of the seat until a portion near the fixed end extending from the front end portion 16A coupled to the front panel 12 exceeds each side frame 11 to the outside. After being bent and extended so as to stand up obliquely upward, and then bent and extended to the rear side of the seat, the protrusion toward the outer side and the upper side of the seat gradually decreases toward the end 16B on the rear side. It is formed in a shape extending so as to become.

  Each of the support wires 16 is applied to the inner circumferential surface of the back surface portion of the front region portion 22B of each side support portion 22 of the cushion pad 20 described above, and the front region portion 22B of each side support portion 22. Is firmly supported from the outside of the seat. Specifically, each support wire 16 is applied to the inner peripheral surface of the front region 22B of each side support portion 22 of the cushion pad 20 together with the outer projecting portion 15C of each wire member 15 described above. Each side support part 22 is supported from both outsides in a state closer to the surface, and the thighs of the seated occupant can be strongly supported from both sides at a fixed position from both outsides.

  Here, the back surface portion of the cushion pad 20 is formed by setting a non-woven fabric (not shown) in the molding die and integrally impregnating and molding the cushion pad 20 during foam molding, so that the back surface layer is cured. It is said that it was in the state. As a result, the cushion pad 20 has four backside portions of the central portion 21 and the backside portions of the side support portions 22 spanned between the frame pieces of the cushion frame 10 and the front and rear frame pieces. Despite being configured to be partially supported by the S spring 14 and the wire members 15 and the support wires 16 attached to the left and right frame pieces, the hardened back surface layer widely Support force is widely distributed and received as if it is supported by a surface. As a result, the seated occupant is partially supported by the frame pieces of the cushion frame 10, the S springs 14, the wire members 15, and the support wires 16 through the cushion pad 20 described above. It is possible to obtain a comfortable seating feeling as if the cushion pad 20 is widely supported by the surface from the lower side or both sides without feeling almost any feeling.

  Thus, according to the configuration of the cushion frame 10 (seat frame) of the present embodiment, the seat member's buttocks are elastic when the lateral force is received by the wire member 15 attached to each side frame 11. Will be supported from the side. Even if the occupant's physique is large due to their elastic structure, each wire member 15 absorbs the physique difference by elastic deformation and can take an appropriate side support state that fits the shape of the buttocks of the occupant. It is like that. Therefore, for the buttocks with relatively little lateral movement, even if each wire member 15 is brought close to these and is provided in a state in which the support function from the side can be satisfactorily exhibited, Each wire member 15 can be appropriately supported from the side.

  In addition, since the member (support member) that supports the buttocks of the seated occupant from the side is configured by the linear wire member 15, these support members can be formed lightweight and with high productivity, By bending portions of each wire member 15, the strength of the elastic force exerted can be adjusted relatively easily.

  Each wire member 15 has a front end 15A coupled to the front panel 12 of the cushion frame 10, and the thigh of the seated occupant is secured by a portion near the fixed end extending from the front end 15A. The outer projecting portion 15C that is supported from the side is formed. Accordingly, the thighs are supported from the side by the wire members 15 in addition to the buttocks of the seated occupant. Since the support from the side of these thighs is performed by a site (outside projecting site 15C) in the vicinity of the fixed end of each wire member 15, a high supporting force is exhibited by each wire member 15 and a stable thigh Support from the side of the department can be performed.

  Next, the configuration of the seat frame (cushion frame 10) of Example 2 will be described with reference to FIG. In the present embodiment, portions having substantially the same configuration and operation as those of the seat frame (cushion frame 10) described in the first embodiment are denoted by the same reference numerals, the description thereof is omitted, and is different. The location will be described in detail.

  In the present embodiment, a hardness adjustment mechanism that can adjust the hardness of the rear protruding portion 15D of each wire member 15 by manual operation between each wire member 15 and each side frame 11 of the cushion frame 10. 40 is provided. The hardness adjusting mechanism 40 includes a rotationally operated handle 41, a screw shaft 42 serving as a rotational axis of the handle 41, and a coupling portion coupled to the lower piece portion 15D2 of the rear protruding portion 15D of each wire member 15. 43, and a compression spring 44 hooked between the coupling portion 43 and the screw shaft 42. The head portion of the screw shaft 42 is integrally coupled to the center portion of the handle 41, and the leg portion of the screw shaft 42 is inserted into the hole formed in the side frame 11 from the outside of the seat, and the handle 41 is attached to the side frame 11. By being screwed into the fixed nut 11 </ b> A, the side frame 11 is provided in a state where it can be rotated around the screw shaft 42. The coupling portion 43 is assembled in a state where it is integrally coupled to the lower piece portion 15D2 of the rear projecting portion 15D of the wire member 15. The compression spring 44 is in the middle of the screw shaft 42 in a state where both ends wound in a cylindrical shape are inserted and assembled to the screw shaft 42 and the leg pin 43A protruding from the coupling portion 43, respectively. The seat plate 42 </ b> A coupled to the place and the base-side seating surface of the coupling portion 43 from which the leg pin 43 </ b> A protrudes are provided.

  In the hardness adjusting mechanism 40 having the above-described configuration, the user rotates the handle 41 in either direction to screw the screw shaft 42 into the nut 11A, whereby the compression spring 44 is seated on the seat plate 42A of the screw shaft 42. Therefore, the elastic force applied to the coupling portion 43 from the compression spring 44 is adjusted to be increased. As a result, the lower piece portion 15D2 of the rear projecting portion 15D of each wire member 15 is adjusted so that it is less likely to bend and deform as it is strongly supported from the outside of the seat by the compression spring 44 with increased elasticity. (Adjusted to be hard). Further, when the user turns the handle 41 in the opposite direction to move the screw shaft 42 in the direction to remove the screw shaft 42 from the nut 11A, the elastic force of the compression spring 44 is adjusted. As a result, the lower piece portion 15D2 of the rear projecting portion 15D of each wire member 15 is adjusted by the compression spring 44 whose elasticity is weakened so as to be easily bent and deformed outside the seat.

  Next, the configuration of the seat frame (cushion frame 10) of Example 3 will be described with reference to FIG. In the present embodiment, portions having substantially the same configuration and operation as those of the seat frame (cushion frame 10) described in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted. The location will be described in detail.

  In the present embodiment, a steel plate member 50 (plate spring) is employed instead of the wire member 15 (see FIG. 6) shown in the second embodiment. Here, the steel plate member 50 corresponds to the “support member” of the present invention. The steel plate member 50 is formed in an L-shaped plate shape having a support plate portion 51 whose surface is inclined slightly upward toward the inner side of the sheet and a top plate portion 52 whose surface is directed upward of the sheet. The top edge of the top plate 52 is coupled to the upper surface of the side frame 11 and is supported in a cantilevered manner. Thereby, the steel plate member 50 is hard to bend to the sheet outer side in the upper region part 51A close to the fixed end side of the support plate part 51, and the sheet outer side in the lower region part 51A close to the free end side of the support plate part 51. It is configured to be easily bent.

  In the steel plate member 50, the support plate portion 51 described above is applied to the inner peripheral surface 22 </ b> A <b> 1 of the back surface portion 22 </ b> A of the side support portion 22 of the cushion pad 20, and the side support portion 22 is provided in a state in which the rear side region portion 22A is supported from the outside of the seat. The steel plate member 50 has a hardness adjusting mechanism 40 provided between the side frame 11 so that the hardness of the flexible lower region 51A of the supporting plate 51 can be freely adjusted by manual operation. It is configured. The coupling portion 43 of the hardness adjusting mechanism 40 is integrally coupled to the back surface (surface facing outward) of the lower region portion 51A of the support plate portion 51.

  As mentioned above, although embodiment of this invention was described using the three Examples, this invention can be implemented with various forms other than the said Example. For example, the “seat frame” of the present invention may be a seat back frame, and the “support member” may be provided so as to support the waist of the seated occupant from the side. That is, the seat occupant's waist, like the buttock, is a part with a small amount of lateral movement when the seated occupant receives a lateral load, and such a part with little lateral movement is supported from a hard side. In order to set the support member, it is necessary to set the support member in a region close to the waist, and it is difficult to set the support member at an appropriate position according to the physical difference of the seated occupant. By applying it to the frame, the lumbar part of various seated occupants with different physiques can be provided even if the support member is brought close to the lumbar part with relatively little lateral movement and the support function from the side can be satisfactorily exhibited. The support member can be used to properly support from the side.

  In addition to the wire member 15 shown in the first and second embodiments and the steel plate member 50 shown in the third embodiment, the “support member” of the present invention elastically supports the buttocks or waist of the seated occupant from the side. Any other elastic member may be used as long as it can be used. Specifically, a material made of a rubber material or a resin material having flexibility can be used. Moreover, in the said Example 1, 2, the both ends of the wire member were joined to the cushion frame, and the form to bend was made to protrude from the rear end part, and it was made to have elasticity by making it a cantilever form. Although what was comprised was illustrated, you may make it give elasticity by making it a free end, without combining one edge part. Or it is good also as a structure which gave elasticity to the wire member by setting it as the shape which wound the wire member in the shape of a coil.

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 3 Seat cushion 4 Slide device 5 Lifter mechanism 5A Lift link 10 Cushion frame (seat frame)
11 Side frame 11A Nut 12 Front panel 13 Rear frame 14 S spring 15 Wire member (support member)
15A Front end portion 15B Rear end portion 15C Outer overhang portion 15D Rear overhang portion 15D1 Upper piece portion 15D2 Lower piece portion 16 Support wire (support wire)
16A Front end portion 16B Rear end portion 20 Cushion pad 21 Central portion 21A Rear side region portion 21B Front side region portion 22 Side support portion 22A Rear side region portion 22A1 Inner peripheral surface 22B Front side region portion 30 Skin material 40 Hardness adjustment mechanism 41 Handle 42 Screw shaft 42A Seat plate 43 Coupling part 43A Leg pin 44 Compression spring 50 Steel plate member (support member)
51 support plate part 51A upper region part 51A lower region part 52 top plate part P1 to P10 part

Claims (3)

A seat frame,
Having a support member that supports the buttocks or waist of the seated occupant from the side,
The support member is a cantilever shape that extends in the same direction so that the two pieces that are fixed at both ends to the seat frame integrally and extend from the fixed ends are aligned in the seat width direction. It is made up of wire members
The two piece parts have an extension length from the corresponding fixed end of the inner piece part located on the inner side in the sheet width direction, than the outer piece part located on the outer side in the sheet width direction. A seat frame having a long structure and being easily bent . The seat frame according to claim 1,
One end of the wire member is coupled to the front portion of the seat frame, and the thigh of the seated occupant is supported from the side by a portion near the fixed end extending from the one end. And the seat frame. The seat frame according to claim 2,
The seat frame further comprises a support wire for supporting the thigh of a seated occupant from the side separately from the support member .

Images