JP6481554B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat.

  2. Description of the Related Art A vehicle seat of a type in which a recessed portion that opens downward is formed in a lower surface portion of a cushion pad, and a hard pad made of foamed resin that is harder than the cushion pad is fitted into the recessed portion. In the invention disclosed in Patent Document 1, a plurality of protrusions that protrude toward the center of the recess are formed on the periphery of the opening of the recess, and the hard pad is supported by the plurality of protrusions from below. Dropping downward from the recess is suppressed.

JP 2009-56190 A

  In the invention disclosed in Patent Document 1, since the plurality of protrusions are integrally formed with the cushion pad, it is possible to suppress the falling off of the hard pad, but the shape of the cushion pad becomes complicated and the molding is poor. There was a possibility that it was easy to occur.

  In view of such a problem, an object of the present invention is to provide a vehicle seat that can prevent a hard pad from dropping downward from a recess without complicating the shape of the cushion pad.

  A first aspect of the present invention is a vehicle seat in which a concave portion that opens downward is formed in a lower surface portion of a cushion pad, and a hard foam pad that is harder than the cushion pad is fitted into the concave portion. A wire frame as a skeleton member is embedded in the cushion pad, and the wire frame includes an exposed portion that protrudes downward from the inner wall surface of the recess, and the hard pad extends in the vertical direction to extend the exposed portion. And a holding member is attached to the exposed portion to support the hard pad from below and prevent the hard pad from dropping downward from the recess. To do.

  According to the first invention, the hard pad fitted in the recess is supported from below by the holding member, which is a separate member from the cushion pad, and is held so as not to drop out of the recess. For this reason, it can suppress that a hard pad falls below from a recessed part, without complicating the shape of a cushion pad.

  According to a second aspect of the present invention, in the first aspect, the exposed portion has a structure in which two vertical bar portions extending in the vertical direction are spaced apart from each other and are arranged side by side with a horizontal bar portion extending in the horizontal direction. The horizontal bar portion protrudes from the lower opening of the through hole to the outside of the through hole, and the holding member is attached to the horizontal bar portion.

  According to the 2nd invention, the horizontal bar part of the exposed part of the wire frame which is a site | part to which a holding member is attached is located outside the through-hole of a hard pad. For this reason, it becomes easy to attach and remove the holding member, and the workability of the replacement work of the hard pad can be improved.

  According to a third aspect of the present invention, in the second aspect, a cushion cover is disposed on an upper surface portion of the cushion pad, and the holding member is attached to a flexible belt-like body provided at a terminal of the cushion cover. A hook portion that can be hooked to the horizontal bar portion is attached, and when the hook portion is hooked on the horizontal bar portion, the belt-like body is connected to the lower surface portion of the hard pad. The hard pad is pressed against and fixed to the inner wall surface of the recess.

  According to the third aspect of the present invention, it is possible to prevent the hard pad from dropping downward from the recess by the holding member having a simple structure. For this reason, complication of the structure of a seat cushion can be controlled.

  According to a fourth aspect of the present invention, in the second aspect, the holding member includes an engaging portion that extends upward from a planar portion that contacts the lower surface portion of the hard pad. When the engaging portion is engaged with the horizontal bar portion, the planar portion abuts against the lower surface portion of the hard pad and presses the hard pad against the inner wall surface of the recess. It is fixed.

  According to the fourth aspect of the present invention, it is possible to prevent the hard pad from dropping downward from the recess by the holding member having another simple structure. For this reason, complication of the structure of a seat cushion can be controlled.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, a long groove opening upward is formed in the upper surface of the hard pad, and the inner wall surface of the recess is A protrusion is provided to be fitted to the groove, and the wire frame includes an extending part extending in the extending direction of the groove in the protrusion.

  According to the fifth invention, even if the hard pad is slightly smaller than the recess due to a manufacturing error or the like, the hard pad can be positioned in the recess by fitting the groove and the protrusion, and the hard pad The backlash can be suppressed.

  According to a sixth aspect of the present invention, in the fifth aspect, the front hard pad receives the body through the cushion pad when the body of the seated person seated on the vehicle seat tries to slide forward in the event of a vehicle collision. It is a front slip suppression member, The said groove part is extended in the left-right direction, It is characterized by the above-mentioned.

   According to the sixth aspect of the present invention, the forward load applied to the hard pad when the hard pad receives the body of the seated person trying to slide forward is applied to the ridge portion of the cushion pad and the extending portion of the wire frame. I can take it. For this reason, the front slip prevention effect of a hard pad can be heightened.

  According to a seventh aspect of the present invention, in the fifth aspect or the sixth aspect, the upper opening of the through hole is located on the bottom surface of the groove.

  According to the seventh aspect of the invention, the upper opening of the through hole and the opening of the groove that are located on the upper surface of the hard pad can be combined. Thereby, since the shape of a hard pad becomes simple, generation | occurrence | production of the shaping | molding defect of a hard pad can be suppressed.

1 is a perspective view of an automobile seat according to an embodiment of the present invention. It is a bottom view of the seat cushion which concerns on the said embodiment. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2. It is a VV arrow line sectional view of Drawing 2. It is a perspective view of the hard pad which concerns on the said embodiment. It is a figure which shows the modification of the vehicle seat which concerns on the said embodiment corresponding to FIG.

  1 to 6 show an embodiment of the present invention. This embodiment shows the example which applied this invention to the seat cushion of the seat for motor vehicles. In each figure, each direction of the automobile when the automobile seat is attached to the automobile is indicated by an arrow. In the following description, the description regarding the direction is made based on this direction.

  As shown in FIG. 1, the automobile seat 1 includes a seat back 2 and a seat cushion 10. The seat cushion 10 is a seat portion for a so-called bench seat that is long in the left-right direction, and includes a left seat 10L, a center seat 10C, and a right seat (not shown). The seat cushion 10 has a structure in which a cushion pad 30 that is a cushion material in which a metal wire frame 20 (see FIG. 2) that is a skeleton member is embedded is covered with a cushion cover 50 that is a skin material.

  As shown in FIG. 1, the cushion pad 30 is a urethane foam pad member elongated in the left-right direction, and includes a left pad portion 30L corresponding to the left seat 10L, a center pad portion 30C corresponding to the center seat 10C, And a right pad portion (not shown) corresponding to the right seat. The left pad portion 30L includes a main front portion 31 disposed on the front side of the left seat 10L in the left-right direction, a main rear portion 32 disposed on the rear side of the main front portion 31, the main front portion 31, and the main rear portion. 32, and side portions 33 disposed on both left and right sides. The center pad portion 30C is disposed continuously with the right terminal portion of the right side portion 33 of the left pad portion 30L. The cushion pad 30 is bilaterally symmetric, and the right pad portion is a mirror image of the left pad portion 30L. In the upper surface portion 30Lu of the left pad portion 30L, a suspension groove portion 34 extending in the front-rear direction or the left-right direction is provided at the boundary portion between the main front portion 31, the main rear portion 32, and the side portion 33 and the boundary portion with the central pad portion 30C. Is provided.

  As shown in FIGS. 2 to 4, the lower surface portion 30 </ b> Ld of the left pad portion 30 </ b> L is formed with a concave portion 36 that is open in the left-right direction and that extends in the left-right direction. In the left-right direction, the concave portion 36 is located slightly on the right side of the boundary portion between the main front portion 31 and the right side portion 33 from the position corresponding to the boundary portion between the main front portion 31 and the left side portion 33 of the left pad portion 30L. It extends to a corresponding position, and in the front-rear direction, it extends from a position corresponding to the boundary part between the main front part 31 and the main rear part 32 to a position corresponding to a front part slightly from the center part in the front-rear direction of the main front part 31. . The front wall portion 362f, the rear wall portion 362r, and the left and right wall portions 362s of the inner wall surface 362 of the recess extend in the vertical direction. As shown in FIGS. 4 and 5, the front portion of the upper wall portion 362u of the inner wall surface 362 of the recess extends in the front-rear direction, but the rear portion extends obliquely downward and rearward from the rear terminal portion of the front portion. It is connected to the upper end of the rear wall 362r. The front portion of the upper wall portion 362u of the inner wall surface 362 of the recess is provided with a protruding ridge portion 363 projecting downward over the entire region in the left-right direction of the upper wall portion 362u at a position slightly ahead of the center portion in the front-rear direction.

  As shown in FIGS. 2 to 4, the wire frame 20 is a part obtained by bending a wire part made of mild steel wire or hard steel wire into a substantially rectangular frame shape, and the wire frame 20 is the same as the cushion pad 30. The foam pad 30 is embedded in the cushion pad 30 by foam molding in a state of being placed in a mold having a shape cavity. Since the wire frame 20 has a substantially bilaterally symmetric structure, only the left half of the wire frame 20 is shown in FIGS. The wire frame 20 has a first wire part 211 that extends in the left-right direction at the front portion of the cushion pad 30 and bent at the left and right ends thereof, and extends in the left-right direction at the rear portion of the cushion pad 30 and has its left and right ends forward. The second wire part 212 that is bent and connected to the left and right ends of the first wire part 211, and extends in the front-rear direction in the vicinity of the boundary portion between the left pad part 30L and the center pad part 30C of the cushion pad 30, and the first wire part 211 and the third wire part 213 connected to the second wire part 212, and extends in the left-right direction slightly ahead of the center part in the front-rear direction of the cushion pad 30, than the terminals at the left and right ends of the second wire part 212. A fourth wire part 214 slightly connected to the rear part. The connecting portions of the respective wire parts are welded by spot welding or the like. The first wire component 211 is provided with an engaging portion 211A that can be connected to an engaging recess (not shown) formed on the body side of the automobile.

  As shown in FIGS. 3 to 5, the fourth wire component 214 is embedded in the protrusion 363 at a portion from the left end of the protrusion 363 of the cushion pad 30 to the right slightly from the center in the left-right direction. The ridge 363 is bent so as to protrude below the ridge 363 at a portion from the right side to the right end rather than the central portion in the left-right direction of the ridge 363. That is, the fourth wire component 214 extends downward from the lower surface portion of the ridge portion 363 continuously to the left and right direction extending portion 214A extending in the left and right direction within the ridge portion 363 and the right terminal portion of the left and right direction extending portion 214A. And a drooping portion 214 </ b> B projecting from the bottom. The hanging portion 214B includes two left and right vertical bar portions 214Ba extending in the up-down direction and a horizontal bar portion 214Bb extending in the left-right direction and connecting the lower end portion of the vertical bar portion 214Ba. The hanging portion 214B corresponds to an “exposed portion” in the claims. The left-right direction extending portion 214A corresponds to an “extending portion” in the claims.

  As shown in FIGS. 4 to 6, the hard pad 40 is a foamed polypropylene pad member that is harder than the cushion pad 30 that is long in the left-right direction. The hard pad 40 has a shape corresponding to the concave portion 36 of the cushion pad 30 and is configured to be fitted into the concave portion 36. That is, the front surface portion, the left and right both surface portions, and the rear surface portion of the hard pad 40 extend in the vertical direction, the front portion of the upper surface portion 40u of the hard pad 40 extends in the front-rear direction, and the rear portion is inclined rearward and downward. It extends. A notch 41 that opens downward and forward is formed at the right front end of the lower surface portion 40d of the hard pad 40. The front part 41uf of the upper wall part 41u of the notch part 41 extends in the front-rear direction, and the rear part 41ur extends from the rear end part of the front part 41uf inclined downward in the rearward direction. The hard pad 40 receives the body of the seated person via the cushion pad 30 when the body of the seated person who is seated in the left seat 10L of the vehicle seat 1 tries to move forward and downward in a vehicle collision. It is a front slip suppression member which suppresses the movement of a seated person's body to the front lower direction.

  As shown in FIG. 3 to FIG. 6, a groove portion 42 that extends over the entire region in the left-right direction of the upper surface portion 40 u and opens upward is formed slightly ahead of the center portion in the front-rear direction of the upper surface portion 40 u of the hard pad 40. Yes. The vertical groove depth and the front-rear groove width of the groove part 42 are dimensions that allow the protrusion 363 of the cushion pad 30 to be fitted from above. A through hole 43 extending in the vertical direction is formed in a portion corresponding to the notch portion 41 in the bottom surface portion 42 d of the groove portion 42. That is, the upper opening 431 of the through hole 43 is disposed in the bottom surface portion 42 d of the groove portion 42, and the lower opening 432 is disposed in the rear portion 41 ur of the upper wall portion 41 u of the notch portion 41. The separation dimension between the front wall part 433f and the rear wall part 433r of the through hole inner wall part 433 and the separation dimension between the left and right wall parts 433s are loosely fitted to the hanging part 214B of the wire frame 20 from the upper opening 431. Possible dimensions. Further, the vertical length of the through hole 43 is such that when the hanging part 214B is inserted into the through hole 43, the horizontal bar part 214Bb of the hanging part 214B protrudes from the lower opening 432 into the cutout part 41. It is.

  As shown in FIGS. 1 and 2, the cushion cover 50 is formed by sewing pieces such as fabric and genuine leather into a three-dimensional shape, and covers the upper surface of the cushion pad 30 so that the end of the cushion cover 50 is covered. The portion 51 is fixed to the lower surface portion of the cushion pad 30 with a clip or the like, and the portion corresponding to the hanging groove portion 34 is fixed to the hanging groove portion 34 with a hog ring or the like, thereby being attached to the cushion pad 30. As shown in FIGS. 2, 4, and 5, in the rear terminal portion 51 r of the terminal portion 51 of the cushion cover 50, a holding cover portion 52 is provided at a portion located behind the exposed portion 214 </ b> B of the wire frame 20. Provided. The holding cover portion 52 includes a belt-like body 521 whose one longitudinal end is sewn to the rear end portion 51r of the cushion cover 50, a hook-like hooking portion 522 attached to the other longitudinal end of the belt-like body 521, It has. The band-shaped body 521 is made of the same material as the cushion cover 50, and the hook portion 522 is a J hook that can be hooked to the horizontal bar portion 214 </ b> Bb of the hanging portion 214 </ b> B of the wire frame 20. When the hooking portion 522 is in a state of being hooked to the horizontal bar portion 214Bb, the belt-like body 521 contacts the lower surface portion 40d of the hard pad 40 and presses upward. The holding cover portion 52 corresponds to a “holding member” in the claims.

  Based on FIGS. 3-5, the attachment method of the hard pad 40 is demonstrated. First, in a state where the wire frame 20 is disposed in a mold having a cavity having the same shape as the cushion pad 30, a resin material is injected into the cavity and foam-molded to obtain the cushion pad 30. Next, after the upper surface portion of the cushion pad 30 is covered with the cushion cover 50, the hard pad 40 is fitted into the concave portion 36 of the left pad portion 30 </ b> L of the cushion pad 30 from below. When the hard pad 40 is fitted into the recess 36, the hanging portion 214B of the wire frame 20 is inserted into the through hole 43 of the hard pad 40 from the upper opening 431, and the horizontal bar portion 214Bb of the hanging portion 214B eventually penetrates. Projecting into the notch 41 of the hard pad 40 from the lower opening 432 of the hole 43. At the same time, the protrusion 363 of the cushion pad 30 is fitted into the groove 42 of the hard pad 40, and the left and right extending portion 214 </ b> A of the wire frame 20 is positioned in the groove 42. For this reason, the front and rear positioning of the hard pad 40 in the recess 36 can be performed by the wire frame 20 which is a skeleton member. Therefore, when the hard pad 40 receives the body of the seated person who wants to slide forward at the time of the vehicle collision through the cushion pad 30, the front pad slips while suppressing the positional displacement of the hard pad 40 in the recess 36. The suppression effect can be improved. After the fitting of the hard pad 40 into the concave portion 36 is finished, the hook portion 522 of the holding cover portion 52 of the cushion cover 50 is hooked against the horizontal bar portion 214Bb of the hanging portion 214B, and the hard pad 40 is recessed by the belt-like body 521. The upper wall portion 362u is pressed and fixed.

  The present embodiment configured as described above has the following operational effects. The hard pad 40 fitted into the concave portion 36 of the cushion pad 30 is supported from below by a holding cover portion 52 that is a separate member from the cushion pad 30 and is held so as not to drop out of the concave portion 36. For this reason, without complicating the shape of the cushion pad 30, it is possible to prevent the hard pad 40 from dropping downward from the recess 36. Further, the horizontal bar portion 214 </ b> Bb of the hanging portion 214 </ b> B is positioned outside the through hole 43. For this reason, the attachment work and the removal work of the hook part 522 of the holding cover part 52 become easy, and the workability of the replacement work of the hard pad 40 can be improved. Moreover, the holding cover part 52 having a simple structure can prevent the hard pad 40 from dropping downward from the recess 36. For this reason, complication of the structure of the seat cushion 10 can be suppressed. Further, even when the hard pad 40 is slightly smaller than the recess 36 due to a manufacturing error or the like, the hard pad 40 can be positioned in the recess 36 by the fitting of the groove 42 and the protrusion 363, and the hard pad 40 can be positioned. 40 rattling can be suppressed. Further, when the rigid pad 40 receives the body of the seated person who is trying to slide forward, the forward load applied to the hard pad 40 is extended in the left-right direction of the protrusion 363 of the cushion pad 30 and the wire frame 20. It can be received by the part 214A. For this reason, the front slip suppression effect of the hard pad 40 can be enhanced. In addition, the upper opening 431 of the through hole 43 and the opening of the groove 42 that are located on the upper surface portion 40 u of the hard pad 40 can be combined. Thereby, since the shape of the hard pad 40 becomes simple, generation | occurrence | production of the molding defect of the imperial pad 40 can be suppressed.

  As mentioned above, although specific embodiment was described, this invention is not limited to those external appearances and structures, A various change, addition, and deletion are possible in the range which does not change the summary of this invention.

  For example, in the present embodiment, the hard pad 40 that is a front slip suppression member is shown as an example of the hard pad. However, the present invention is not limited to this. For example, the hard pad may be provided for adjusting the sitting comfort of the seat cushion 10 or reducing the weight. At this time, the arrangement position of the hard pad is not limited to the lower side portion of the fourth wire component 214 which is the arrangement position of the present embodiment, but the first wire component 211, the second wire component 212, and the third wire component. It may be the lower side of 213. That is, the fourth wire component 214 may have a structure in which the first wire component 211, the second wire component 212, and the third wire component 213 are provided with a hanging portion without providing the hanging portion 214B.

  Moreover, in this embodiment, the structure which sews the holding | maintenance cover part 52 to the cushion cover 50 was shown. However, the present invention is not limited to this, and a structure in which the holding cover portion 52 is integrated with the cushion cover 50, that is, for example, the rear end portion 51 r of the cushion cover 50 partially extends so that the belt-like body 521 of the holding cover portion 52 is formed. The formed structure may be sufficient.

  Moreover, in this embodiment, the structure using the holding cover part 52 as a holding member was shown. However, it is not limited to this. That is, for example, as shown in FIG. 7, a structure in which a resin holding clip 60 is used as a holding member may be used. The holding clip 60 having the structure has a planar portion 61 that comes into contact with the lower surface portion 40d of the hard pad 40, and an engagement that extends upward from the planar portion 61 and engages with the hanging portion 214B of the wire frame 20. Part 62. When the engaging portion 62 of the holding clip 60 is engaged with the hanging portion 214 </ b> B, the planar portion 61 presses and fixes the hard pad 40 to the concave inner wall surface 362 of the cushion pad 30. Even in this modification, it is possible to prevent the hard pad 40 from dropping downward from the recess 36 by the holding member 60 having a simple structure. For this reason, complication of the structure of a seat cushion can be controlled.

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

1 Car seat (vehicle seat)
10 Seat cushion 20 Wire frame 214A Left-right direction extension part (extension part)
214B Hanging part (exposed part)
214Ba Vertical bar part 214Bb Horizontal bar part 30 Cushion pad 36 Recess 362 Recess inner wall surface 40 Hard pad 42 Groove part 43 Through hole 50 Cushion cover 52 Holding cover part (holding member)
521 Strip 522 Hook 60 Holding clip (holding member)
61 Planar part 62 Engagement part

Claims (7)

A vehicle seat in which a recess opening downward is formed in the lower surface of the cushion pad, and a hard pad made of foamed resin harder than the cushion pad is fitted into the recess,
A wire frame that is a skeleton member is embedded in the cushion pad, and the wire frame includes an exposed portion that protrudes downward from the inner wall surface of the recess,
The hard pad is a slip prevention member that receives a body through the cushion pad when a body of a seated person seated on a vehicle seat tries to slide forward during a vehicle collision,
The hard pad is formed with a through hole extending in the vertical direction to receive the exposed portion,
A vehicle seat to which a holding member is attached to the exposed portion to support the hard pad from below and suppress the hard pad from dropping from the recess. In claim 1,
The exposed portion has a structure in which two vertical bar portions extending in the vertical direction are spaced apart from each other and connected to each other by a horizontal bar portion extending in the left-right direction, and the horizontal bar portion is located below the through hole. A vehicle seat that protrudes out of the through hole from an opening, and the holding member is attached to the horizontal bar portion. In claim 2,
A cushion cover is disposed on the upper surface of the cushion pad,
The holding member has a structure in which a hook portion that can be hooked to the horizontal bar portion is attached to a flexible belt-like body provided at a terminal of the cushion cover,
A vehicle seat in which, when the hooking portion is hooked on the horizontal bar portion, the belt-like body comes into contact with the lower surface portion of the hard pad and presses and fixes the hard pad against the inner wall surface of the recess. In claim 2,
The holding member has a structure in which an engaging portion that can be engaged with the horizontal bar portion extends upward from a planar portion that contacts the lower surface portion of the hard pad.
When the engaging portion is engaged with the horizontal bar portion, the vehicle seat in which the planar portion abuts against the lower surface portion of the hard pad and presses and fixes the hard pad against the inner wall surface of the recess. . In any one of Claims 1-4,
A long groove opening upward is formed on the upper surface of the hard pad, the inner wall surface of the recess includes a protrusion that fits into the groove, and the wire frame is formed in the protrusion. A vehicle seat including an extending portion extending in an extending direction of the groove portion. In claim 5,
An upper opening of the through hole is a vehicle seat positioned on a bottom surface of the groove. A vehicle seat in which a recess opening downward is formed in the lower surface of the cushion pad, and a hard pad made of foamed resin harder than the cushion pad is fitted into the recess,
A wire frame that is a skeleton member is embedded in the cushion pad, and the wire frame includes an exposed portion that protrudes downward from the inner wall surface of the recess,
The hard pad is formed with a through hole extending in the vertical direction to receive the exposed portion,
A holding member is attached to the exposed portion to support the hard pad from below and suppress the hard pad from dropping downward from the recess.
The exposed portion has a structure in which two vertical bar portions extending in the vertical direction are spaced apart from each other and connected to each other by a horizontal bar portion extending in the left-right direction, and the horizontal bar portion is located below the through hole. A vehicle seat that protrudes out of the through hole from an opening, and the holding member is attached to the horizontal bar portion .

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