JP6683036B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat.

  There are vehicle seats in which external components such as a seat backboard are attached to a seat frame. In the vehicle seat described in Patent Document 1, the first locking portion provided on the upper portion of the seat back board and the second locking portion provided on the lower portion of the seat back board are respectively formed of the seat back frame. The first locked portion provided on the upper portion and the second locked portion provided on the lower portion are locked. Here, the seat back board is made of resin, and the first locking portion is formed in a hook shape having a substantially inverted U shape, which is integrally formed on the seat seating surface side of the seat back board body and has a cross-section opening downward. And has a pair of clamping surfaces and an upper surface located on the opposite side to the opening side. The second locking portion has a tab-like shape that is integrally formed on the seat seating surface side of the seat backboard body and that projects and extends in the seat seating surface direction. The first locked portion is a wire having a circular cross section extending in the left-right direction of the vehicle in the seatback frame, and the second locked portion is a hole provided in the seatback frame. By locking the hook-shaped portion of the first locking portion to the wire that is the first locked portion, the movement of the seat backboard in the front-rear direction with respect to the seat frame is stopped. Further, by locking the claw of the second locking portion in the hole of the second locked portion, the movement of the seat backboard in the up, down, left and right directions with respect to the seat frame is stopped.

JP, 2005-74276, A

  The automobile seat disclosed in Patent Document 1 has an advantage that the workability of attaching the seat backboard to the seat frame is good. However, since the hook-shaped form portion of the first engaging portion is engaged with the wire that is the first engaged portion, it is necessary to provide a gap between the wire and the pair of clamping surfaces. However, due to this, there is a possibility that abnormal noise may occur due to rattling in the front-rear direction due to vibration during traveling. Further, the hook-shaped portion of the first locking portion cannot regulate the movement in the vertical direction when locked by the wire that is the first locked portion, so that the hook of the second locking portion cannot be moved to the second position. The movement in the vertical direction is restricted by being locked in the hole of the locked portion. A slight gap is also provided between the claw of the second locking portion and the peripheral portion of the hole of the second locked portion in order to smoothly perform the locking. As a result, there is a possibility that abnormal noise may occur due to rattling in the vertical direction due to vibration during traveling.

  In view of such demands, an object of the present invention is to provide a vehicle seat in which parts can be attached with a simple structure and which suppresses generation of abnormal noise due to vibration of the parts.

  A first aspect of the present invention is a vehicle seat, wherein the component is attached to the seat frame by locking a locking portion provided on the component with a locked portion provided on the seat frame. The locked portion is a linear member fixed to the seat frame, and the locking portion has a holding wall having a substantially U-shaped cross section into which the locked portion can be inserted. It has a pair of side wall parts facing each other and a bottom wall part located on the opposite side to the opening side of the sandwiching wall, and the pair of side wall parts are close to each other on the opening side and separated from each other on the bottom wall part side. When the locked portion is formed between the side wall portions of the holding wall, the side wall portion is formed so as to abut against the locked portion in a pressed state. .

  According to the first aspect of the invention, when the locking portion provided on the component is locked to the locked portion provided on the seat frame, the side wall portion of the holding wall in the locking portion is a line that is the locked portion. It comes into contact with the member in a pressed state. Further, since the opening side of the side wall of the sandwiching wall is formed closer to the bottom wall side, the pressing force of the side wall increases when the linear member tries to move toward the opening side, and as a result, the locking portion is It becomes difficult to move to the opening side. Further, when the linear member tries to move to the bottom wall side, it abuts on the bottom wall and stops moving. As a result, the locking portion is prevented from moving in two directions parallel to the side wall of the sandwiching wall with respect to the locked portion, and the locking portion always moves relative to the locked portion. The possibility that the locking portion rattles against the locked portion and a strange noise is generated by abutting in the pressed state is reduced.

  A second invention of the present invention is characterized in that, in the above-mentioned first invention, the locking portion is formed of two members each having one of the pair of side wall portions of the sandwiching wall.

  According to the second aspect of the present invention, in the pair of side wall portions of the sandwiching wall, the side wall portion on the side to which a stronger force is applied can be made to have higher strength and higher rigidity than the other side wall portions, and the ratio can be increased according to the required strength and rigidity. Can be a general structure. Further, it becomes easy to form a locking portion having a so-called undercut portion, in which the distance between the pair of side wall portions is narrower on the opening side than on the bottom wall portion side.

  In a third aspect of the present invention based on the second aspect, one of the two members forming the locking portion is integrally formed with the body of the component, and the other member is the component. It is attached to the main body of the.

  According to the third aspect of the invention, since one member is integrally formed with the main body of the component to form the locking portion, it suffices to attach the other member to the main body of the component and the increase in the number of components can be suppressed. .

  4th invention of this invention is the said 3rd invention, The said locking part is provided with two or more, The said other member in at least one said locking part is the said other member in the said other locking part. It is characterized by being formed with higher strength and higher rigidity.

  According to the fourth aspect of the invention, the locking strength and rigidity of the component with respect to the locked portion provided on the seat frame can be partially changed, and another member having high strength and high rigidity can be provided only in the portion where the strength is desired to be increased. Since it can be used, the structure can be rationalized.

  A fifth invention of the present invention is characterized in that, in any one of the first invention to the fourth invention, the component is an external component of the vehicle seat.

  According to the fifth aspect of the invention, the exterior components are attached to the seat frame of the vehicle seat with a simple structure while suppressing the generation of noise due to rattling.

FIG. 1 is a perspective view of an automobile seat according to an embodiment of the present invention as seen obliquely from the front. The headrest is omitted. FIG. 3 is an exploded perspective view of the seat back of the vehicle seat of the above embodiment as seen obliquely from the front. The back cover is omitted. FIG. 3 is an exploded perspective view of the seat back of the vehicle seat of the above embodiment as seen obliquely from the rear. The back cover is omitted. It is an exploded perspective view which looked at the main back pad of the seat back of the above-mentioned embodiment diagonally from the back. It is the perspective view which looked at the base material of the main back pad of the above-mentioned embodiment from the lower right. It is the perspective view which looked at the base material of the main back pad of the above-mentioned embodiment from the lower left. It is a front view which shows the state which attached the base material of the said embodiment to the back frame. It is a VIII-VIII arrow sectional view taken on the line of FIG. FIG. 9 is a sectional view taken along the line IX-IX of FIG. 7. It is a top view which shows the state which attached the base material of the said embodiment to the back frame.

  1 to 10 show an embodiment of the present invention. This embodiment is an example in which the present invention is applied to a vehicle seat. In each drawing, arrows indicate directions of the automobile and the automobile seat when the automobile seat is attached to the automobile. In the following description, directions are described with reference to this direction. The vehicle seat 1 of the present embodiment includes a seat cushion 10 that serves as a seating portion, a seat back 20 that serves as a backrest, and a headrest that supports the head. The headrest is omitted in each figure.

  As shown in FIG. 1, the seat cushion 10 includes a cushion frame 10F that forms a skeleton, a cushion pad 10P that is a cushion material placed on the cushion frame 10F, and a skin material that is put on the cushion pad 10P. A certain cushion cover 10C is provided. Further, the seat back 20 includes a back frame 20F that forms a skeleton, a back pad 20P that is a cushion material placed on the back frame 20F, and a back cover 20C that is a skin material that is covered over the back pad 20P. , Are provided. Since the seat cushion 10 and the headrest have known configurations, description thereof will be omitted, and the seatback 20 will be described. Here, the vehicle seat 1 and the back frame 20F correspond to the "vehicle seat" and the "seat frame", respectively, in the claims.

  As shown in FIGS. 2 and 3, the back frame 20F of the seat back 20 is made of iron, and includes a pair of left and right side frames 21 extending in the vertical direction, and an upper frame 22 that connects upper end portions of the side frames 21. , A lower panel 23 that connects the lower end portions of the side frames 21 to each other, and is formed in a substantially rectangular shape in a front view. The side frame 21 is a substantially U-shaped press-molded member whose cross section opens in the seat inward direction, and a reinforcing member 21a is attached to the lower end side. A locking wire 24 having a circular cross section for mounting a substrate 50 of a main back pad 40, which will be described later, to the back frame 20F is arranged between the rear surfaces of the side frames 21 on the upper end side in the left-right direction. Further, a cover locking wire 25 having a circular cross section for locking the end of the back cover 20C is arranged between the upper end side and the lower end side of each side frame 21 so as to extend in the vertical direction. . The upper frame 22 is a press-molded member having a substantially U-shaped cross section that opens in the rearward direction of the seat. A board mounting member 22 a for mounting the board 50 of the main back pad 40 to the back frame 20 F is attached to the upper surface of the upper surface of the upper frame 22. The board mounting member 22a is a press-molded member and is formed with mountain-shaped portions 22a1 whose ridge lines extend in the front-rear direction on both left and right end sides, and two bolt holes 22a2 are provided side by side in the front-rear direction on the seat inner slope of the mountain-shaped portion 22a1. . Further, a clip hole 22a3 is provided on the end portion side of the sloped surface of the chevron portion 22a1 on the outer side of the seat. A bolt hole 22a4 penetrating in the up-down direction is provided at the center of the rear side of the board mounting member 22a in the left-right direction. Further, a positioning pin hole 22a5 is provided inside the seat of the bolt hole 22a2. Between the upper surface of the upper frame 22, the board mounting member 22a, and the lower surface, a pair of holders 26 penetrating therethrough and extending in the vertical direction are arranged at symmetrical positions. The holder 26 is a rectangular tube-shaped member in which a headrest support is inserted into and supported by an inner tube portion thereof. The lower panel 23 is a press-molded member having a substantially L-shaped cross section. In addition to the back frame 20F, a recliner for adjusting the tilt angle with respect to the cushion frame 10F, a wire for supporting the back pad 20P, and the like are attached. Is omitted. Here, the locking wire 24 corresponds to the “locked portion” in the claims.

  As shown in FIGS. 2 and 3, the back pad 20P includes a side back pad 30 that mainly supports the body side portion of the seated occupant and a main back pad 40 that mainly supports the body back portion of the seated occupant. The side back pad 30 is made of urethane foam resin and has a substantially inverted U shape in a front view in which the upper end portions of the pair of left and right bank portions 31 are connected by the upper portion 32. Each side frame 21 is attached to the back frame 20F so that each bank portion 31 covers it. The main back pad 40 is made of urethane foam resin and formed in a front hanging shape, and includes a front surface portion 41, a rear surface portion 42, and a pair of left and right connecting portions 43 connecting the front surface portion 41 and the rear surface portion 42. Have. The front surface portion 41 is shaped to fit in the space sandwiched between the pair of left and right bank portions 31 of the side back pad 30. The rear surface portion 42 is shaped to cover the upper rear surface portion of the back frame 20F. The pair of left and right connecting portions 43 connects the upper end portion of the front surface portion 41 and the upper end portion of the rear surface portion 42 left and right to form an opening portion 44 in which a headrest is arranged in the center portion in the left-right direction. A through hole 45 corresponding to an opening 52a of a substrate 50 described later is formed on the left end side of the rear surface portion 42. Here, the main back pad 40 corresponds to “a component, an external component” in the claims.

  As shown in FIG. 4, a substrate 50, which is a resin component, is arranged from the front surface side of the rear surface portion 42 of the main back pad 40 to the lower surface portion side of the connecting portion 43. The substrate 50 includes a main body portion 51 formed by injection molding of polypropylene resin, a lever device portion 54 attached to the left side of the main body portion 51, a lid member 58 and a locking member 59 attached to the right side of the main body portion 51. And.

  As shown in FIGS. 4 to 6, the main body portion 51 of the substrate 50 has a rear wall portion 52 that abuts a front surface side of a rear surface portion 42 of the main back pad 40 and a lower surface side of the left and right connecting portions 43 of the main back pad 40. And a pair of upper wall portions 53 that are in contact with each other. A substantially rectangular opening 52a is formed in a rear view from the left end of the rear wall portion 52 to the lower end of the left connecting portion 43. Specifically, the opening 52a is arranged such that the long side direction of the rectangle is inclined to the left by about 45 degrees with respect to the center plane in the left-right direction of the main back pad 40, and the opening 52a is directed to the inside of the opening 52a at the substantially central portion of the long side of the rectangle. It has a pair of projecting portions 52b that project. A locking hole 52b1 for inserting and locking the middle claw portion 55a of the base plate 55 of the lever device portion 54, which will be described later, is provided on the upper side of the base portion of the protruding portion 52b. A screw hole 52b4 is provided slightly below the locking hole 52b1. A notch 52a1 is provided downward at the lower left corner of the opening 52a, and three standing wall portions 52b2 extending in the up-down direction are parallel to each other on the front surface of the lower rear wall portion 52 of the notch 52a1. Are formed. The upright wall portion 52b2 constitutes one of the locking portions so that its top surface portion 52b21 (see FIG. 9) faces the left locking portion 55b of the base plate 55 of the lever device portion 54 described later. The width of the notch 52a1 and the left locking portion 55b in the left-right direction are formed to be substantially the same. Further, above the upper short side of the opening 52a, a pair of locking holes 52b3 for inserting and locking a pair of upper claw portions 55d of the base plate 55 of the lever device portion 54 described later are provided. A substantially rectangular opening 52c is formed in a rear view from the right end of the rear wall portion 52 to the lower end of the right connecting portion 43. The structures of the opening 52c and the rear wall portion 52 of the peripheral edge thereof are plane-symmetrical to the opening 52a and the peripheral edge thereof with respect to the center plane in the left-right direction of the main body 51, and therefore description thereof will be omitted. As a result, the lever device portion 54, the lid member 58, and the locking member 59 are selectively attached to the opening 52a and the opening 52c of the main body portion 51, respectively. A bolt fastening upright piece 52d provided with a bolt hole 52d1 through which a bolt for fastening a bolt is fastened to the upper frame 22 is provided in the upper central portion on the front side of the rear wall portion 52 in the vertical direction. Has been set up.

  As shown in FIG. 4 to FIG. 6 and FIG. 10, three ribs extending in the front-rear direction are formed on the upper wall portion 53 of the main body portion 51 so as to be substantially parallel to each other on the lower surface side thereof. There are three ribs 53a, ribs 53b, and ribs 53c from the inner side to the outer side of the seat. The front ends of the ribs 53a, 53b, and 53c are connected by a rib 53d extending in the left-right direction, and the rear ends of the ribs 53a, 53b, 53c are connected by a rib 53e extending in the left-right direction. The rib 53a bends and extends in the left-right center direction of the main body 51 from the middle, and two bolt holes 53a1 are provided side by side in the front-rear direction on the bent surface portion. Further, a pin engaging portion 53a2 for attaching the positioning pin P is formed at the lower end of the rib 53a. A clip seat 53c1 for attaching the clip 60 is provided at the center of the rib 53c in the front-rear direction. The clip 60 is formed of a pedestal 61 and a locking leg 62 that is integrally formed from the pedestal 61 and that can be locked by being inserted into a clip hole 22a3 provided in the board mounting member 22a of the upper frame 22. It is a known clip made of. The clip seat 53c1 is provided with an attachment hole to which the base 61 of the clip 60 can be attached. After the clip 60 is attached to the clip seat 53c1, a lid member 63 for covering the recess formed by the clip seat 53c1 and smoothing the surface is attached to the upper surface of the upper wall portion 53 opposite to the clip seat 53c1. ing.

  As shown in FIGS. 4 to 10, the lever device portion 54 includes a base plate 55 that is a steel plate press-molded member, a resin bezel 56, and a lever device 57. The base plate 55 has a substantially rectangular shape when viewed from the rear, and an intermediate pawl portion 55a extending upward in parallel with the long side is formed at a substantially central portion of the long side of the rectangle, and a pair of upper claws is provided above the upper short side. The upper claw portion 55d is formed. A screw hole 55a1 is formed between the middle claw portion 55a and the base plate 55 main body. Further, a substantially rectangular left locking portion 55b is formed in a rear view at the lower left corner portion of the base plate 55, and a substantially rectangular right locking portion 55c is formed in a rear view at the lower right corner portion. There is. As shown in FIG. 9, the left locking portion 55b has a standing wall portion 55b1 that rises toward the front at an obtuse angle with respect to the base plate 55 main body, and extends downward from the tip of the standing wall portion 55b1 in parallel with the base plate 55 main body. And a push wall portion 55b2 extending in a vertical direction. Further, the left locking portion 55b has a guide wall portion 55b3 extending forward from the tip end portion of the push wall portion 55b2 in parallel with the standing wall portion 55b1. The push wall portion 55b2 is a portion that holds the locking wire 24 by sandwiching it with the standing wall portion 52b2 of the main body 51 when the base plate 55 is attached to the main body 51 of the substrate 50. The top surface portion 52b21 of the standing wall portion 52b2 has a first portion 52b211 having a minimum distance from the upper wall portion with the pressing wall portion 55b2, a second portion 52b212 having a maximum distance smoothly connecting to the first portion 52b211, and a second portion 52b212. And a third portion 52b213 having a medium interval that smoothly connects the above. The third portion 52b213 is located at the lower end of the top surface portion 52b21 of the standing wall portion 52b2. That is, when the retaining wall 24 is sandwiched and held between the push wall portion 55b2 and the standing wall portion 52b2, the retaining wire 24 does not go above the second portion 52b212. Then, as the position of the locking wire 24 moves from the second portion 52b212 to the third portion 52b213, the pressing force from the pressing wall portion 55b2 and the standing wall portion 52b2 to the locking wire 24 increases. Even when the locking wire 24 is located in the second portion 52b212, the pressing force applied to the locking wire 24 from the pushing wall portion 55b2 and the standing wall portion 52b2 does not become zero. The guide wall portion 55b3 is a portion that functions to guide the locking wire 24 between the push wall portion 55b2 and the standing wall portion 52b2. The right locking portion 55c is plane-symmetrical with respect to the left locking portion 55b with respect to a plane that is perpendicular to the base plate 55 and passes through the bisectors of the short sides. This is configured such that when the base plate 55 is attached to the right opening 52c of the main body 51, the right locking portion 55c performs the same function with the right standing wall portion 52b2. Further, an opening 55e for passing a connecting portion of the lever 57a of the lever device 57 with an operation wire (not shown) arranged inside the seat back 20 is provided at substantially the center of the base plate 55. On the lower end side of the base plate 55, a pair of screw holes 55f is provided on the upper side and a pair of screw holes 55g is provided on the lower side at positions symmetrical with respect to the vertical bisector of the short side. Here, the standing wall portion 52b2 and the left locking portion 55b correspond to the "locking portion" in the claims. Further, each of the push wall portion 55b2 and the portion connected from the second portion 52b212 to the third portion 52b213 corresponds to the “side wall portion” in the claims, and the push wall portion 55b2 and the second portion 52b212 to the third portion 52b213. Together, they correspond to the “clamping wall” in the claims. Further, the portion connecting the first portion 52b211 to the second portion 52b212 corresponds to the "bottom wall portion" in the claims.

  As shown in FIGS. 4, 9, and 10, the bezel 56 has a rectangular shape in a rear view and has a recess 56a in the center. The recess 56a is provided with a rectangular opening 56b, a long side of the periphery of the opening 56b is provided with a projecting portion 56c projecting inward, and the projecting portion 56c is provided with a screw hole 56c1. There is. A pair of screw holes 56d are provided on the lower short side of the peripheral edge of the opening 56b at positions symmetrical with respect to the vertical bisector of the short side. The lever device 57 has a lever 57a and a case member 57b, and the lever 57a is axially supported so as to be vertically rotatable with respect to the case member 57b. By rotating the lever 57a with respect to the case member 57b, an operation wire (not shown) arranged inside the seat back 20 can be pulled to operate a lock member (not shown) or the like. There is.

  As shown in FIGS. 4 to 8, the lid member 58 has a substantially rectangular shape when viewed from the rear, and has a pair of screw holes 58a near both ends at the center of its long side and a lower short side near the screw hole 58a. A pair of screw holes 58b are provided at symmetrical positions with respect to the vertical bisector of the short side. The locking member 59 is an integrally molded member made of resin, and has a base portion 59a and a locking wall portion 59b. The base portion 59a is attached to the notch 52a1 of the opening 52c on the right side by sandwiching the peripheral edge portion of the notch 52a1 from the front and back when fitted from above. A screw hole 59a1 is provided on the upper end side of the base portion 59a for passing a screw for fixing the screw to the screw hole 58b on the right side of the lid member 58. As shown in FIG. 8, the locking wall portion 59b has a standing wall portion 59b1 that rises forward with an obtuse angle with respect to the screw fastening surface portion of the base portion 59a with the lid member 58. The locking wall portion 59b has a pushing wall portion 59b2 extending downward from the tip end portion of the standing wall portion 59b1 in parallel with the screw fastening surface portion of the base portion 59a with the lid member 58. Further, the locking wall portion 59b has a guide wall portion 59b3 extending forward from the tip end portion of the pushing wall portion 59b2 in parallel with the standing wall portion 59b1. Four ribs 59b4 for reinforcement are erected parallel to each other on the front surface side from the base portion 59a to the pushing wall portion 59b2 via the standing wall portion 59b1. The standing wall portion 59b1, the pushing wall portion 59b2, and the guide wall portion 59b3 of the locking wall portion 59b correspond to the standing wall portion 55b1, the pushing wall portion 55b2, and the guiding wall portion 55b3 of the left locking portion 55b of the base plate 55, respectively. The contact surfaces of the locking wires 24 are formed in the same shape. Here, the standing wall portion 52b2 and the locking wall portion 59b correspond to the "locking portion" in the claims. Further, each of the push wall portion 59b2 and the portion connected from the second portion 52b212 to the third portion 52b213 corresponds to the “side wall portion” in the claims, and the push wall portion 59b2 and the second portion 52b212 to the third portion 52b213. The portion connected to is equivalent to the "clamping wall" in the claims. Further, the portion connecting the first portion 52b211 to the second portion 52b212 corresponds to the "bottom wall portion" in the claims.

  The procedure for assembling the seatback 20 will be described with reference to FIGS. The upper claw portion 55d of the base plate 55 is locked in the locking hole 52b3 of the body portion 51, and the middle claw portion 55a of the base plate 55 is locked in the locking hole 52b1 of the body portion 51. Further, the base portion 59a of the locking member 59 is fitted into the cutout 52a1 on the right side of the main body portion 51. In this state, the lid member 58 is covered so as to cover the opening 52c of the main body 51, the screw hole 58a and the screw hole 52b4 are aligned and fixed with the screw, and the right screw hole 58b and the screw hole 59a1 are aligned with each other. Fix it. Furthermore, with the clip 60 attached to the clip seat 53c1 of the main body 51, the lid member 63 is fixed to the upper surface of the main body 51 by adhesion or the like. Further, the positioning pin P is attached to the pin engaging portion 53a2. The substrate 50 with the base plate 55, the lid member 58, and the locking member 59 attached is attached to the front surface side of the rear surface portion 42 of the main back pad 40 by adhesion or the like. At this time, the base plate 55 of the substrate 50 is exposed from the through hole 45 of the main back pad 40. The main back pad 40 in this state is covered with the back cover 20C to process the end portion, and a hole is formed in the through hole 45 portion. Next, the bezel 56 is put on the base plate 55 of the substrate 50, and the screw holes 55g and the screw holes 56d are aligned and fastened with screws. Further, the screw hole 56c1, the screw hole 55a1 and the screw hole 52b4 are aligned and fastened with screws. As a result, the peripheral portion of the through hole 45 is in a state in which the end of the back cover 20C is covered with the bezel 56. In parallel, the side back pad 30 is attached to the back frame 20F, and the back cover 20C is put over the side back pad 30 to process the terminal portion. The left and right terminal portions of the back cover 20C are locked to the cover locking wire 25.

  As shown in FIGS. 7 to 9, the guide wall 55b3 of the left locking portion 55b of the base plate 55 and the guide wall 59b3 of the locking member 59 are brought into contact with the locking wire 24 of the back frame 20F. In this state, the main back pad 40 is pressed down from above. At this time, the positioning pin P is inserted into the positioning pin hole 22a5 of the board mounting member 22a and is pressed while positioning. Then, the space between the third part 52b213 and the second part 52b212 of the left standing wall part 52b2 and the push wall part 55b2 of the left locking part 55b of the base plate 55 is pushed and fitted into the locking wire 24. Then, the fitting is completed in a state where the locking wire 24 is in contact with the portion connected to the first portion 52b211 from the second portion 52b212. At the same time, the space between the third portion 52b213 and the second portion 52b212 of the right wall portion 52b2 and the push wall portion 59b2 of the locking member 59 is pushed into the locking wire 24 and is fitted therein. Then, the fitting is completed in a state where the locking wire 24 is in contact with the portion connected to the first portion 52b211 from the second portion 52b212. At this time, the gap between the third portion 52b213 and the push wall portion 55b2 is narrower than that between the second portion 52b212 and the push wall portion 55b2, and the gap between the third portion 52b213 and the push wall portion 59b2 is smaller. The interval is narrower than between the second portion 52b212 and the push wall portion 59b2. As a result, when the board 50 is fitted into the locking wire 24, the sliding resistance is initially high and gradually decreases as it is fitted. Then, with the main back pad 40 attached to the back frame 20F, the locking wire 24 is pressed between the standing wall portion 52b2 and the pushing wall portion 55b2 and between the standing wall portion 52b2 and the pushing wall portion 59b2 in the front-back direction. No rattling. Further, when the main back pad 40 is moved upward from the mounting wire 24, that is, in the detaching direction, the space between the standing wall portion 52b2 and the pressing wall portion 55b2 and the standing wall portion 52b2 against the locking wire 24 is pushed. Since the pressing force generated between the wall portion 59b2 and the wall portion 59b2 is increased, the sliding resistance is increased to make it difficult to move. That is, rattling in the vertical direction is suppressed.

  As shown in FIGS. 1 and 10, the clip 60 attached to the substrate 50 with the main back pad 40 attached to the locking wire 24 from above the back frame 20F to which the side back pad 30 is attached. The locking leg 62 is fitted and fixed in the clip hole 22a3 of the board mounting member 22a. In this state, the bolt holes 53a1 of the board 50 and the bolt holes 22a2 of the board mounting member 22a are aligned and fastened and fixed by bolts and nuts. The nut is previously welded to the peripheral edge of the bolt hole 22a2 on the rear surface of the board mounting member 22a. Further, the bolt hole 52d1 of the board 50 and the bolt hole 22a4 of the board mounting member 22a are aligned and fastened and fixed by a bolt and a nut. The nut is previously welded to the peripheral edge of the bolt hole 22a4 on the rear surface of the board mounting member 22a. In this state, if necessary, by pulling back cloth-like pulling members (not shown) provided on the back covers 20C on both the left and right sides of the front surface portion 41 of the main back pad 40 and locking them to the back frame 20F, The main back pad 40 can be stably attached to the back frame 20F.

  The embodiment configured as described above has the following operational effects. When the standing wall portion 52b2 and the left locking portion 55b provided on the main back pad 40 are locked to the locking wire 24, the portion connecting the push wall portion 55b2 and the second portion 52b212 to the third portion 52b213 is the locking wire 24. Abutting against. Similarly, when the standing wall portion 52b2 and the locking wall portion 59b provided on the main back pad 40 are locked to the locking wire 24, the portion that connects the push wall portion 59b2 and the second portion 52b212 to the third portion 52b213 is engaged. It contacts the stop wire 24 in a pressed state. Further, since the third portion 52b213 is formed closer to the push wall portion 55b2 than the second portion 52b212, when the locking wire 24 tries to move toward the third portion 52b213, the pushing force of the push wall portion 55b2 is increased. As a result, it becomes difficult for the locking wire 24 to move toward the third portion 52b213. Similarly, since the third portion 52b213 is formed closer to the pushing wall portion 59b2 than the second portion 52b212, when the locking wire 24 tries to move toward the third portion 52b213, the pushing force by the pushing wall portion 59b2 is increased. Is increased, and as a result, it becomes difficult for the locking wire 24 to move toward the third portion 52b213. This prevents the standing wall portion 52b2 and the left locking portion 55b, and the standing wall portion 52b2 and the locking wall portion 59b from moving in the front-rear direction and the up-down direction with respect to the locking wire 24, and the main back pad 40. The risk of rattling with respect to the locking wire 24 and generating abnormal noise is reduced.

  Further, the left locking portion 55b of the base plate 55 is more likely to be applied with a forward force from the lever device 57 than the locking wall portion 59b of the locking member 59. Therefore, by making the left locking portion 55b an iron member having high strength and rigidity, a rational structure corresponding to required strength and rigidity can be obtained. In other words, it is possible to avoid an increase in weight and the like due to the locking wall portion 59b having higher strength and rigidity than necessary. Further, between the upright wall portion 52b2 of the main body portion 51 and the base plate 55, the interval between the push wall portion 55b2 and the portion connecting the second portion 52b212 to the third portion 52b213 is narrowed in the third portion 52b213, so undercutting is performed. A part is formed. However, since the push wall portion 55b2 is a separate component from the main body portion 51, the undercut portion can be easily formed. The same effect can be obtained between the standing wall portion 52b2 of the main body portion 51 and the locking member 59.

  Furthermore, since the standing wall portion 52b2 is integrally formed with the main body portion 51 of the main back pad 40, it is only necessary to attach the base plate 55 and the locking member 59 to the main body portion 51, and an increase in the number of parts can be suppressed. In addition, the main back pad 40, which is an external component, is attached to the back frame 20F of the vehicle seat 1 while suppressing the generation of noise due to rattling with a simple structure.

  Although the specific embodiments have been described above, the present invention is not limited to those appearances and configurations, and various changes, additions and deletions can be made without departing from the spirit of the present invention. For example, the following are mentioned.

  1. In the above embodiment, the standing wall portion 52b2 and the left locking portion 55b provided on the main back pad 40 with respect to the locking wire 24, and the standing wall portion 52b2 and the locking wall portion 59b provided on the main back pad 40. , Are configured to be locked. However, the configuration is not limited to this, and only one of them may be locked.

  2. In the above embodiment, the standing wall portion 52b2 is integrally formed with the main body portion 51, and the left locking portion 55b and the locking wall portion 59b are formed as separate members. However, the present invention is not limited to this, and the standing wall portion 52b2 and the left locking portion 55b or the standing wall portion 52b2 and the locking wall portion 59b may be formed integrally with the body portion 51, or may be formed as a separate member from the body portion 51. You may do it.

  3. In the above embodiment, the present invention is applied to the main back pad 40 for mounting the back frame 20F. However, the present invention is not limited to this, and can also be applied to mounting other vehicle seats 1 such as a backboard and a shield to a seat frame.

  4. In the above embodiment, the present invention is applied to the seat of the automobile, but it may be applied to the seat mounted on an airplane, a ship, a train, or the like.

1 Car seats (vehicle seats)
20 seat back 20F back frame (seat frame)
24 Locking wire (locked part)
40 Main back pad (parts, external components)
50 board 51 body part 52b2 standing wall part (locking part)
52b21 Top surface portion 52b211 portion (bottom wall portion)
52b212 part (side wall part)
52b213 part (side wall part)
55 Base plate 55b Left locking part (locking part)
55b2 Push wall part (holding wall, side wall part)
59 locking member 59b locking wall portion (locking portion)
59b2 Push wall portion (holding wall, side wall portion)

Claims (2)

A vehicle seat,
The component is attached to the seat frame by locking a locking portion provided on the component to a locked portion provided on the seat frame,
The locked portion is a linear member fixed to the seat frame, and the locking portion has a holding wall having a substantially U-shaped cross section into which the locked portion can be inserted.
The sandwiching wall has a pair of side wall portions facing each other and a bottom wall portion located opposite to the opening side of the sandwiching wall,
The pair of side wall portions are formed to be close to each other on the opening side and separated from each other on the bottom wall portion side,
When the locked portion is arranged between the side wall portions of the holding wall, the side wall portion is formed so as to abut against the locked portion in a pressed state ,
The locking portion is formed of two members each having one of the pair of side wall portions of the sandwiching wall,
Of the two members forming the locking portion, one member is integrally formed with the main body of the component, and the other member is attached to the main body of the component,
A plurality of the locking portions are provided, and the other member of at least one of the locking portions is formed to have higher strength and higher rigidity than the other member of the other locking portion, and A vehicle seat to which a lever for pulling an operation wire disposed inside is attached . The vehicle seat according to claim 1, wherein the component is an external component of the vehicle seat.

Images