JP2011105251A - Cushion panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve a cushion panel to be latched rotatably around the shaft of a rear rod and capable of securing ride comfort, restricting an increase of parts items, when stretching a cushion panel in the back and forth direction of a cushion frame of a vehicle seat. <P>SOLUTION: This cushion panel includes: a receiver surface formed from a plate-like member 33 to receive a pad; and a rear part latch structure 51 extended backward from the receiver surface so as to be latched by a rear rod 27 stretched in the cross direction in a rear part of a cushion frame. The receiver surface is structured of a plate surface of a plate-like member 33, and includes a rear inclined part 49 inclined upward in a rear part of the receiver surface. The rear part latch structure 51 includes: a first latch piece 53 formed by bending a rear end of the plate-like member 33 downward; and a second latch piece 57 formed by cutting and bending the rear inclined part 49 of the receiver surface downward. The rear latch structure 51 is latched by the rear rod 27 in the state of arranging the rear rod 27 between the first latch piece 53 and the second latch piece 57. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cushion panel. More specifically, the present invention relates to a cushion panel that supports a pad that is spanned in the front-rear direction of a cushion frame that forms a skeleton of a seat cushion of a vehicle seat and that forms a seating surface.

  Conventionally, such a cushion panel is stretched over a front panel on the front side of the cushion frame and a rear rod horizontally mounted on the rear side and fixed by welding. Therefore, in a seat with a lifter mechanism that allows the seat cushion to move up and down with rotation around the axis of the rear rod, the operation of the lifter mechanism is hindered by welding the front panel to the rear rod. There wasn't.

  In a vehicle seat, in order to support a pad that forms a seating surface, a spring material formed by bending a wire may be used instead of a cushion panel. Such a spring material is described in Patent Document 1 below, for example. In the following Patent Document 1, the front end of the spring material is hooked on a cut-and-raised ring provided on the front panel, and the rear end is locked by an inverted U-shaped locking tool fitted on the outer periphery of the rear rod. . The locking tool fitted to the rear rod is composed of a metal retainer and a resin collar provided inside the retainer, and a spring material is attached to the spring hanging pieces extending at both lower ends of the retainer. The rear end is hooked. According to such a locking tool, since the spring material is engaged with the outer periphery of the rear rod, the spring material can be reliably held with respect to the rear rod, and the rotation of the rear rod about the axis can be performed. It is considered acceptable.

JP 2008-183107 A

  However, the use of another member of the locking tool is not preferable in that the number of parts increases. In addition, the spring material is different from the plate-like cushion panel in that it can ensure good sitting comfort due to elasticity, and even if the locking structure of the spring material to the rear rod can be applied to the cushion panel, It is not possible to ensure comfort.

  SUMMARY OF THE INVENTION An object of the present invention is to implement a cushion panel that is allowed to rotate around the axis of a rear rod in an acceptable manner and to ensure good sitting comfort with a smaller number of parts.

  The present invention relates to a cushion panel that supports a pad that is stretched in the front-rear direction of a cushion frame that constitutes a skeleton of a seat cushion of a vehicle seat, and that forms a seating surface. And a rear hooking structure that extends rearward of the receiving surface and is hooked to a rear rod that is installed in the width direction at the rear of the cushion frame, and the receiving surface is a plate surface of the plate-like member The rear latching structure includes a first latching piece formed by bending a rear end portion of the plate-like member downward and a rear portion of the receiving surface. A second latching piece formed by cutting and raising the inclined portion downward, and latching the rear rod as a state where the rear rod is disposed between the first latching piece and the second latching piece. Characterized by To.

  According to such a cushion panel, since the rear inclined portion that is raised rearward is provided at the rear portion of the receiving surface, it is possible to prevent the seated person's buttocks from falling backward and to ensure good sitting comfort. In the rear latching structure for the rear rod, the rear rod is latched between the first latching piece and the second latching piece so that the cushion panel does not fall off from the rear rod. Can be allowed to rotate around the axis. Moreover, since both the 1st latching piece and the 2nd latching piece are integrally formed in the cushion panel, a rear part latching structure can be comprised with fewer parts.

  In the cushion panel according to the present invention, the rear hook structure includes a resin-made interposing member interposed between the first hook piece, the second hook piece, and the rear rod. It is preferable that the member and the first hooking piece and the second hooking piece are engaged with each other via an engaging means that is not allowed to move relative to each other. In this case, it can be prevented that the cushion panel and the rear rod are in direct contact with each other and noise is generated.

  The cushion panel of the present invention can be preferably applied to a vehicle seat provided with a lifter mechanism that allows the seat cushion to move up and down with rotation about the axis of the rear rod.

According to the cushion panel of the present invention, the cushion panel can be hooked to allow the rotation around the axis of the rear rod, and the comfortable seating can be secured with a smaller number of parts.
Further, the resin-made interposing member interposed between the first and second hooking pieces and the rear rod is connected to the first and second hooking pieces via the engaging means. Therefore, the cushion panel and the rear rod can be prevented from coming into direct contact with each other to prevent noise from being generated.

1 is a side view of a vehicle seat according to an embodiment of the present invention. It is a perspective view of the cushion frame assembly which concerns on embodiment of this invention. FIG. 3 is a plan view of the cushion frame assembly shown in FIG. 2. FIG. 4 is a sectional view of the cushion frame assembly shown in FIG. 3 taken along line IV-IV. It is sectional drawing which expands and shows the rear part latching structure of the cushion frame assembly shown by FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a sheet 11 according to this embodiment. In each figure, FR, RR, and UP indicated by arrows indicate the front, rear, and upper sides of the seat 11 that are determined with reference to the direction viewed from the seated person. In each figure, W indicated by an arrow indicates the width direction of the sheet 11. The seat 11 is a seat mounted on a vehicle such as an automobile, and includes a seat cushion 13 serving as a seating surface, a seat back 17 serving as a backrest, and a headrest (not shown). The present invention is characterized by the seat cushion 13.

  As shown in FIG. 1, the seat cushion 13 includes a cushion frame assembly 15 including a cushion frame 21 constituting a skeleton, and a pad 14 that forms a seating surface. As shown in FIG. 2, the cushion frame assembly 15 includes a cushion frame 21 and a cushion panel 31 spanned in the front-rear direction of the cushion frame 21. As shown in FIG. 1, the seat 11 includes a lifter mechanism 71 that allows the seat cushion 13 to move up and down.

  As shown in FIG. 2, the cushion frame 21 that constitutes the skeleton of the seat cushion 13 includes a pair of lower arms 23 a and 23 b that are spaced apart in the width direction W and extended in the front-rear direction. The lower arms 23a and 23b are connected at the front part by a front rod (not shown), the front panel 25 is stretched over the front part, and the rear part is connected by a rear rod 27.

  As shown in FIG. 1, a lifter mechanism 71 that enables the seat cushion 13 to move up and down is provided in association with the cushion frame 21. The lifter mechanism 71 includes links 77 and 79 that connect an underframe 75 standing on a slide rail mechanism 73 attached to a floor F of the vehicle and a lower arm 23a of the cushion frame 21. The links 77 and 79 are rotatably connected to the lower arm 23a and the under frame 75, respectively, and a four-bar link mechanism is configured together with the lower arm 23a and the under frame 75. With this four-bar linkage mechanism, the cushion frame 21 can be moved up and down with respect to the under frame 75 as shown by a two-dot chain line in FIG. The rear link 79 is connected to the lower arm 23a so as to be rotatable, is coaxially connected to the rotation center and is connected to the rear rod 27 so as not to be rotatable relative to each other, and the left and right four-bar linkage mechanisms are synchronized. It has become. The rear link 79 is provided with a sector gear 79a and meshes with a pinion gear 81 held on the side frame 23a. By rotating the pinion gear 81 by lever operation or motor drive, the rear link 79 tilts and the side frame 23a (cushion frame 21) moves up and down, and the link 79 is driven to move the rear rod 27. Rotates around the axis.

  As shown in FIG. 2 and the like, the cushion panel 31 is made of a metal plate-like member 33 and is stretched over the cushion frame 21 in the front-rear direction, and the lower surface of the pad 14 covered on the cushion frame assembly 15. Support. The cushion panel 31 includes a receiving surface 41 that receives the pad 14, and a rear hooking structure 51 that is hooked to the rear rod 27 is extended behind the receiving surface 41. A front hooking structure 35 to be hooked is extended.

  The receiving surface 41 is configured by an upper surface 33 a of the plate-like member 33. The receiving surface 41 is viewed in the front-rear direction, in order from the front, the first front inclined portion 43 inclined relatively gently rearwardly downward, and the first inclined surface 43 inclined more rapidly than the first front inclined portion 43. (2) A front inclined portion 45, a substantially horizontal bottom portion 47, and a rear inclined portion 49 inclined rearward are continuously formed. As shown well in FIG. 4, the bottom portion 47 is disposed below the buttocks B of the seated person H, and the rear inclined portion 49 is positioned behind the buttocks B. According to the receiving surface 41 having such a configuration, since the bottom portion 47 is set below the heel portion B and is most recessed, the seated person H is unlikely to have a so-called bottoming feeling, and the heel portion B is moved backward by the rear inclined portion 49. Suppression is suppressed, and good comfort is secured.

  As shown in FIG. 5, the rear latching structure 51 includes a latching portion 52 including a first latching piece 53 and a second latching piece 57 formed integrally with the cushion panel 31, and an interposition member. 61. The first hooking piece 53 is continuous with the rear inclined portion 49 and is formed by bending the rear end portion of the plate-like member 33 constituting the cushion panel 31 downward. The second hooking piece 57 cuts and raises a part of the rear inclined portion 49 downward so that the rear side is the base end and the front side is the free end at substantially the center in the width direction of the rear inclined portion 49 of the cushion panel 31. Is formed. The first latching piece 53 and the second latching piece 57 are hung facing and spaced apart from each other in the front-rear direction at the rear end portion of the cushion panel 31. It has an inverted U-shaped cross section including the second retaining piece 57.

  The interposed member 61 is made of resin such as polypropylene. The interposition member 61 is a long member extending in the width direction as shown in FIG. 3, and its cross-sectional shape is an inverted U-shape as shown in FIG. 5. Specifically, the interposition member 61 has a reverse cross section in which the upper end portions of the first interposition piece 63 inscribed in the first engagement piece 53 and the second interposition piece 67 inscribed in the second engagement piece 57 are continuously formed. The first interposition piece 63 and the second interposition piece 67 are U-shaped, and the claw portions 63a and 67a projecting outward on the outer surface facing the first hook piece 53 or the second hook piece 57. It has. The first latching piece 53 and the second latching piece 57 are formed with locking holes 53a and 57a in which the claw parts 63a and 67a can be formed, and the claw parts 63a and 67a and the locking holes 53a, The interposition member 61 is attached to the latching portion 52 of the cushion panel 31 by being engaged with the 57a, and is disposed along the inner side of the latching portion 52 of the cushion panel 31. The claw portions 63a and 67a and the locking holes 53a and 57a of the present embodiment correspond to the engaging means of the present invention. According to this engaging means, the latching part 52 and the interposition member 61 are in a locked state in which relative movement is impossible in both the axial direction and the rotational direction. The lower end portion of the first interposing piece 63 that is inscribed in the first hooking piece 53 located at the rear end portion of the cushion panel 31 has a shape folded outward so as to wrap the lower end portion of the first hooking piece 53. The cover part 64 is set. By covering the lower end portion of the first latching piece 53 with the cover portion 64, even if the seated person's foot placed behind the seat 11 enters under the seat 11, the foot Can be prevented from directly hitting the lower end of the first hooking piece 53.

  According to the rear latching structure 51 of the cushion panel 31, the rear rod 27 is allowed to rotate relative to the rear rod 27 because it is attached to the outer periphery of the rear rod 27. In addition, since the outer periphery of the rear rod 27 is sandwiched between the first hooking piece 53 and the second hooking piece 57, the cushion panel 31 is bent by the load of the seated person H, and rotates around the axis with respect to the rear rod 27. Even if it moves, the cushion panel 31 is unlikely to come off the rear rod 27. Further, since the resin-made interposing member 61 is interposed between the metal cushion panel 31 and the rear rod 27, occurrence of abnormal noise due to metal contact is suppressed. In particular, when the resin-made interposing member 61 has a thickness that interferes with both the latching portion 52 of the cushion panel 31 and the rear rod 27, the cushion panel 31 can be prevented from rattling with respect to the rear rod 27. preferable.

  The front latching structure 35 includes a front latching piece 37 extending forward from the first front inclined portion 43 of the front part of the cushion panel 31, and the front latching piece 37 is a front part. In a state of being overlapped with the panel 25, it is hooked on the front panel 25 via a resin hooking member 35a. The resin hooking member 35a is plate-shaped and is disposed between the front hooking piece 37 of the cushion panel 31 and the front panel 25, and engages with the front hooking piece 37 and also with the front panel 25. The cushion panel 31 and the front panel 25 are connected together.

According to the cushion panel 31 of the above structure, there exist the following effects.
By providing the bottom part 47 on the receiving surface 41 of the cushion panel 31 and the rear inclined part 49, it is possible to ensure good sitting comfort. In addition, the first latching piece 53 extends at the rear end portion of the rear inclined portion 49, and a second latching piece 57 is formed by raising a part of the rear inclined portion 49 in the width direction. The latching portion 52 is provided integrally with the cushion panel 31. Therefore, the rear hook structure 51 can be configured with a small number of parts. The rear latching structure 51 fits on the outer periphery of the rear rod 27, can reliably latch the cushion panel 31 with respect to the rear rod 27, and allows the relative rotation of the rear rod 27 to allow the lifter mechanism 71 of the seat 11. Does not interfere with operation.

It should be noted that various other embodiments can be considered within the scope of the present invention without departing from the gist of the present invention.
For example, the second hooking piece 57 can be provided not only at one place in the width direction of the rear inclined portion 49 but also at a plurality of places.
Moreover, you may apply to the sheet | seat which is not restricted to the sheet | seat 11 provided with the lifter mechanism 71, and is not provided with a lifter mechanism.

DESCRIPTION OF SYMBOLS 11 Seat 13 Seat cushion 14 Pad 15 Cushion frame assembly 21 Cushion frame 25 Front panel 27 Rear rod 31 Cushion panel 33 Plate-like member 33a Upper surface 41 Receiving surface 49 Rear inclined part 51 Rear latching structure 52 Engagement part 52 Engagement part 53 1 latching piece 53a latching hole 57 2nd latching piece 57a latching hole 61 interposition member 63a, 67b claw part 71 lifter mechanism

Claims (3)

A cushion panel that is supported in a front and rear direction of a cushion frame that constitutes a skeleton of a seat cushion of a vehicle seat and supports a pad that forms a seating surface,
A receiving surface made of a plate-like member, and including a receiving surface for receiving the pad, and a rear hooking structure that extends rearward of the receiving surface and is hooked to a rear rod that extends in the width direction at the rear portion of the cushion frame, The receiving surface is constituted by a plate surface of the plate-like member, and includes a rear inclined portion that rises rearward at the rear portion, and the rear latching structure is formed by bending the rear end portion of the plate-like member downward. The rear rod includes a first hook piece and a second hook piece formed by cutting and raising a rear inclined portion of the receiving surface downward, and the rear rod is between the first hook piece and the second hook piece. A cushion panel characterized by being hooked to the rear rod in a state in which is disposed. The cushion panel according to claim 1,
The rear latching structure includes a resin-made interposing member interposed between the first and second latching pieces and the rear rod, and the interposition member and the first latching structure A cushion panel characterized in that the piece and the second hooking piece are engaged via an engaging means which is not relatively movable. The cushion panel according to claim 1 or 2, wherein
The cushion panel according to claim 1, wherein the vehicle seat includes a lifter mechanism that enables the seat cushion to move up and down with rotation about the axis of the rear rod.

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