JP2007029247A - Seat cushion pad with seating sensor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat cushion pad with a seating sensor which keeps the edge of the seating sensor rigidly connected to a pad body and prevents unexpected turning up of the edge, especially the front edge, of the seating sensor in a process of covering the pad body with a surface material or in using a seat cushion pad to prevent a deterioration in function of the seating sensor. <P>SOLUTION: The surface of the pad body 10 is provided with the seating sensor 30, and the pad body 10 is embedded with a locked member 22 for connecting the seating sensor 30 to the pad body 10. The right and left side edges 30A and 30B and the front edge 30C of the seating sensor 30 are projectingly provided with fixing pieces 34 and 60, respectively, and the fixing piece 60 is connected to the locked member 22 through a fastener 50. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seat cushion pad with a seating sensor used for an automobile, for example.

  As shown in FIG. 8, the automobile seat generally includes a seat back portion 100 that supports the back of the seated person and a seat cushion portion 101 that supports the buttocks. The seat cushion portion 101 is configured by covering a surface of a seat cushion pad 103 placed on a seat frame 105 with a skin 104 made of woven or knitted fabric or leather. The seat cushion pad 103 includes a pad main body 106 made of a flexible foam such as a flexible polyurethane foam, and a reinforcing cloth 107 integrated with the lower surface of the pad main body 106. In addition, a locking wire (not shown) is embedded in the pad main body 106 at an appropriate position, and the skin 104 is connected to the locking wire via a C-ring (see, for example, Patent Document 1).

  In addition, for example, a seat-like flexible seating sensor is used to determine whether a seated person is seated on a seat such as an auxiliary seat and to control the operating state of components such as an airbag. ing. In some cases, the seating sensor is used while being covered on the upper surface of the pad main body and being interposed between the skin and the pad main body (see, for example, Patent Document 2).

Thus, since the skin covers the pad main body with the seating sensor laid on the upper surface of the pad main body, it is desirable that the seating sensor is not displaced from the pad main body or bent. Therefore, the left and right edges of the seating sensor are connected to the locking wire via a C-ring. Further, the front part of the seating sensor is provided with an insertion hole, and it has been considered that the front part of the seating sensor is connected to the pad body by pushing a bar-like clip inserted through the insertion hole into the pad body. .
Japanese Patent Laid-Open No. 2005-452 JP 2002-211297 A

  When the front part of the seating sensor is fixed by pushing the bar-shaped clip into the pad main body as described above, the pad main body is made of foam, so the bar-shaped clip often comes out of the pad main body and is securely fixed. There is a disadvantage that cannot be done. As a result, in the step of covering the pad body with the skin, the front part of the seating sensor may be inadvertently bent and bent. Even if the skin can be put on the pad body with the clip holding the front part of the seating sensor, the stick-shaped clip can be easily removed from the pad body. When attached and used for a long time, the stick-shaped clip may come off from the pad body. The drooping of the seating sensor adversely affects the performance of the seating sensor, and the airbag may malfunction.

  In the present invention, the edge of the seating sensor can be firmly connected to the pad body side, and the edge of the seating sensor, particularly the front part, is inadvertently covered during the process of covering the pad body with the pad body or when using the seat cushion pad. It is an object of the present invention to prevent the performance of the seating sensor from being deteriorated by preventing the occurrence of the problem.

  The seat cushion pad with a seating sensor of the present invention includes a pad body made of a foam having elasticity, and a flexible seating sensor provided on the surface of the pad body, and the pad body has a linear shape. In a cushion pad with a seating sensor in which a locked member made of a material is embedded and the edge of the seating sensor is connected to the locked member via a fixture, the locked member is a pair of left and right vertical lines And the left and right edges of the seating sensor are connected to the vertical line portion via a fixture, and the seating sensor has a middle line portion positioned between the vertical line portions. A mounting piece projects from the front edge, and the mounting piece is connected to the middle line-shaped portion via a fixture.

  In the seat cushion pad with a seating sensor of the present invention, a mounting piece protrudes from the front edge portion of the seating sensor, and the mounting piece is connected to the middle line-shaped portion via a fixture. In addition to the side edge, the front edge can be firmly connected to the pad body.

  The seat cushion pad with a seating sensor of the present invention comprises a leg portion in which the mounting piece extends from a front edge portion of the seating sensor, and a locking portion having a width wider than the leg portion, and the fixture is And a C-ring for fixing the leg portion to the middle line-shaped portion.

  In addition, a groove extending in the front-rear direction is provided on the surface of the pad main body, and the vertical line portion and the middle line portion are intermittently embedded in the groove along the groove. The fixture is locked.

  Moreover, the said to-be-latched member is a structure by which the skin coat | covered with a pad main body is connected via a fixing tool.

  According to the present invention, the edge of the seating sensor can be firmly connected to the pad body side, and the end (edge) of the seating sensor can be prevented from being inadvertently rolled.

  Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show a seat cushion pad used in an automobile seat according to an embodiment. As shown in FIGS. 1 to 4, the seat cushion pad 1 includes a seat portion 2 in the center in the width direction (left and right direction, E direction shown in FIG. 2), and a side formed in a raised shape on both the left and right sides. Parts 4 and 4. In FIG. 2, the arrow F direction indicates the front, the arrow L direction indicates the left direction, and the arrow R direction indicates the right direction.

  The seat cushion pad 1 is composed of a pad main body 10 made of a synthetic resin foam molded body having elasticity such as a flexible polyurethane foam, and a reinforcing cloth 12 integrated over substantially the entire lower surface of the pad main body 10. . The reinforcing cloth 12 is provided to reinforce the lower surface of the pad in contact with the seat frame 3 and prevent the generation of abnormal noise. The reinforcing cloth 12 is made of coarse blanket, felt, non-woven fabric, etc., and is integrally foam-molded with the pad main body 10. ing.

  A plurality of grooves are provided on the upper surface of the pad body 10. This groove includes a pair of left and right vertical grooves 15, 15 extending in the front-rear direction (D direction shown in FIG. 2) along the boundary between the seat portion 2 and the side portion 4, and the rear ends of the left and right vertical grooves 15, 15. , A front horizontal groove 17 that connects the front sides of the left and right vertical grooves 15, 15, and a middle vertical groove 18 that connects the rear horizontal groove 16 and the middle portion of the front horizontal groove 17. The front lateral groove 17 divides the seat portion 2 into the front and rear, the front side of the front lateral groove 17 receives and supports the thigh of the seated person, and the rear side of the front side groove 17 receives and supports the seated person's buttocks. It is a receiving part 2B.

  The pad main body 10 is provided with locking wires 20, 21, 22 as locked members made of a rigid linear body such as metal along each groove. As shown in FIG. 5, the locking wire 20 has a pair of left and right vertical linear portions 20 </ b> A extending in the front-rear direction from the front end of the pad to the rear end along the left and right vertical grooves 15, 15, and the rear horizontal groove 16. A rear horizontal linear portion 20B extending in the left-right direction connecting the rear ends of the pair of vertical linear portions 20A and 20A so as to be along.

  The locking wire 21 is a front horizontal line portion positioned between the pair of vertical line portions 20A and 20A along the front horizontal groove 17. The locking wire 22 is a middle line portion positioned between the front horizontal line portion 21 and the rear horizontal line portion 20B along the middle vertical groove 18. Each of the locking wires 20, 21, and 22 is end-treated by bending each end to be rounded.

  Each of the locking wires 20, 21, and 22 is embedded in a state where it is intermittently exposed at the bottom of each groove and in the longitudinal direction. More specifically, deep bottom portions 15a, 16a, 17a, 18a having deep bottoms are provided at a plurality of locations in the longitudinal direction of each groove, and the locking wires 20, 21, 22 are provided at the deep bottom portions 15a, 16a, 17a, 18a. Part (exposed part) 20A1, 20B1, 21a, 22a is embedded so as to be exposed in the groove. As shown in FIGS. 1 and 4, a first deep bottom portion 18a1 is provided at the front portion of the middle vertical groove 18, and a part of the front portion of the locking wire 22 (exposed portion) is provided from the first deep bottom portion 18a1. ) 22a is exposed. Note that. When the wire is exposed in the groove, it means that a part of the upper surface of the wire is exposed or the entire circumference of the wire is exposed.

  A flexible seating sensor 30 is laid on the upper surface of the buttocks receiving portion 2B. The seating sensor 30 is composed of, for example, a plurality of cells printed on a sheet (film) 31 and includes a pressure-sensitive sensor that generates an ON signal when subjected to a pressure or deformation exceeding a predetermined value. The seating sensor 30 is connected to the connector 32 via a signal line printed on the film.

  The left and right edges 30A and 30B of the seating sensor 30 are provided with substantially C-shaped mounting pieces 34 and 34, respectively, and each mounting piece 34 is fixed to the exposed portion 20A1 of the vertical linear portion 20A. Are connected through a C-ring 35. A belt-like opening 37 is formed at the center in the left-right direction of the seating sensor 30 and in the front-rear direction. The opening 37 is formed so as to leave the connecting portion 40 at the front edge 30 </ b> C of the seating sensor 30, and mounting pieces 39 a and 39 b project from the edge of the opening 37. Each attachment piece 39a, 39b is connected to the exposed portion 22a of the middle line portion (locking wire) 22 via a C-ring 36, respectively.

  A mounting piece 60 projects from the connecting portion 40 (front edge portion 30C). Specifically, the attachment piece 60 is substantially composed of a leg portion 61 that extends forward from a central position in the left-right direction at the connecting portion 40 and a locking portion 62 that is wide from the leg portion 61 in the left-right direction. It is formed in a T shape. The mounting piece 60 corresponds to the position of the first deep bottom portion 18a1, and the leg portion 61 is connected to the exposed portion 22a of the locking wire 22 by caulking a C ring 50 as a fixture. Since the leg portion 61 whose width is reduced by the C ring 50 is fastened and fixed, the locking portion 62 has a function of a stopper, and the mounting piece 60 is not inadvertently detached from the locking wire 22. The connection of the seating sensor 30 to the pad main body 10 is strong.

  As shown in FIG. 3, the skin 6 is appropriately connected to the exposed portions of the locking wires 20, 21, 22 via the skin-side wire 7 and the fixture (C-ring) 8, and a series of work steps are performed. Improves. Since the left and right edges 30A, 30B and the front edge 30C of the seating sensor 30 are firmly connected to the pad body 10 by C-rings 35, 36, 50, the skin 6 is connected to the pad body 10 and the seating sensor 30. In the case of covering, the seating sensor 30 (particularly the front edge portion of the seating sensor 30) does not rip, and the skin 6 can be covered quickly and easily.

  The rear edge portion 30D of the seating sensor 30 connects the rearmost mounting piece 39b to the locking wire 22, and therefore does not bend inadvertently. Moreover, since each C-ring 35, 36, 50 is accommodated in each deep-bottom part 15a, 18a, 18a1, when a seated person sits on the pad main body 10, there is no possibility of giving discomfort by each C-ring. .

  The present invention is not limited to the above-described embodiment. For example, the shape of the attachment piece 60 can be arbitrarily set, and a plurality of attachment pieces 60 can also be provided. Specifically, as shown in FIG. 7, substantially C-shaped or substantially U-shaped mounting pieces 60 </ b> A and 60 </ b> A may be provided on both sides of the substantially T-shaped mounting piece 60. In such a case, the attachment pieces 60 </ b> A and 60 </ b> A are connected to the exposed portion 21 a of the locking wire 21 by the C ring 50. In the seat cushion pad 1 shown in FIG. 7, the same members as those in the seat cushion pad 1 shown in FIG.

  Further, as shown by phantom lines in FIG. 7, a mounting piece 60B is also provided on the rear edge portion 30D of the seating sensor 30, and this mounting piece 60B is connected to the exposed portion 60B1 of the rear horizontal line portion 20B by a C-ring 50. It is also possible.

  When a plurality of mounting pieces are provided as described above, a plurality of locking wires 22 may be embedded in the pad body 10 and the mounting pieces may be connected to the respective locking wires 22.

  The seating sensor 30 may be laid on the lower surface other than the upper surface of the pad main body 10. In addition, it is possible to cover the surface of the seating sensor 30 after providing a surface layer portion made of a foam having a lower hardness than the pad main body 10.

It is a disassembled perspective view of the seat cushion pad which concerns on one Embodiment of this invention. It is a top view of the seat cushion pad. It is a cross-sectional side view of the strut mount. It is a top view of the pad main body. It is a top view of the wire for locking embed | buried in the pad main body. It is a perspective view which shows the principal part of the state which made the fixing tool latch to the latching wire. It is a top view of the seat cushion pad concerning other embodiments of the present invention. It is a perspective view which shows the cross section of the conventional vehicle seat.

Explanation of symbols

6 Skin 8 Fixture 10 Pad body 15 Vertical groove (groove)
18 Middle vertical groove (groove)
20 Locked member 20A Vertical line-shaped portion 21 Locked member 22 Middle line-shaped portion (locked member)
20A1, 20B1, 21a, 22a Exposed portion 30 Seat sensor 30A, 30B Left and right edges (edges) of the seat sensor
30C Front sensor edge (edge)
35 Fixing tool 50 C-ring (fixing tool)
60 Mounting piece 61 Leg portion 62 Locking portion D Front-rear direction E Left-right direction

Claims (4)

A pad main body made of a foam having elasticity and a flexible seating sensor provided on the surface of the pad main body, a locked member made of a linear material is embedded in the pad main body, In a cushion pad with a seating sensor for connecting an edge of the seating sensor to the locked member via a fixture,
The locked member includes a pair of left and right vertical linear portions and a middle linear portion positioned between the vertical linear portions, and the left and right edges of the seating sensor are connected via a fixture. A seating sensor, wherein the seating sensor is connected to a vertical line-shaped portion, and a mounting piece projects from a front edge portion of the seating sensor, and the mounting piece is connected to the middle-line-shaped portion via a fixture. Seat cushion pad with.   The mounting piece includes a leg portion extending from a front edge portion of the seating sensor, and a locking portion having a width larger than the leg portion, and the fixture has the leg portion as the middle line portion. The seat cushion pad according to claim 1, comprising a C-ring to be fixed.   A groove extending in the front-rear direction is provided on the surface of the pad main body, and the vertical line portion and the middle line portion are intermittently embedded in the groove along the groove and fixed to the exposed portion. The seat cushion pad according to claim 1 or 2, wherein the tool is locked.   The seat cushion pad according to claim 1, wherein the locked member is configured such that an outer skin covered with a pad main body is connected via a fixture.

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