JP2007022372A - Seat cushion pad with seating sensor, and seating sensor attaching structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To securely couple an edge portion of a seating sensor to a pad body side, and to prevent deterioration of the performance of the seating sensor by preventing the edge portion, especially a front portion of the seating sensor from carelessly being turning up in a process covering the pad body with a surface skin or under a service condition of a seat cushion pad. <P>SOLUTION: The seating sensor 30 is provided on a surface of the pad body 10, and a locked member 22 is buried in the pad body 10. By locking a fixing tool 50 to the locked member 22, the edge portion of the seating sensor 30 is coupled to the pad body 10. The fixing tool 50 is composed of a pair of leg portions 52 having hook portions 51 at tip ends, and a coupling portion 53 coupling upper ends of both leg portions. <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, and a seating sensor mounting structure.

  As shown in FIG. 10, 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 main body by pushing the bar-like clip inserted through the insertion hole into the pad main 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 comprises 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 is engaged. In the cushion pad with a seating sensor, in which a locking member is embedded and the edge of the seating sensor is connected to the pad main body by locking the fixing member to the locked member, the locked member includes a pair of left and right A vertical line part and a middle line part located between the vertical line parts, the left and right edges of the seating sensor are connected to the vertical line part via a fixture, The front edge portion of the seating sensor is connected to the middle line-shaped portion via a fixture.

  In the seat cushion pad with a seating sensor of the present invention, the front edge portion of the seating sensor can be firmly connected to the pad body.

  The fixture for fixing the front edge portion of the seating sensor of the seat cushion pad with the seating sensor of the present invention comprises front and rear leg portions having hook portions at the ends, and connecting portions for connecting both leg portions, and the both leg portions. The hook portion is locked to the middle line-shaped portion so as to straddle part of the front edge portion of the seating sensor and so that the connecting portion presses part of the front edge portion. The fixture having such a configuration has an advantage that the operator can easily grasp the work and can quickly perform the work, as compared with the conventional bar-shaped clip.

  In addition, a groove extending in the front-rear direction is provided on the surface of the pad main body, and the vertical line portions are intermittently exposed in the groove along the groove, and the hook of the fixing tool is embedded in the exposed portion. The part is preferably locked.

  Further, when a guide portion for guiding the fixture when it is pushed in extends from the groove, the workability can be further improved.

  In the seating sensor mounting structure of the present invention, a locked member made of a linear material is embedded in a pad body made of a foam having elasticity, and a fixing member is locked to the locked member. In the seating sensor mounting structure in which the edge of the seating sensor provided on the surface of the pad main body is connected to the pad main body, the fixture connects a pair of leg portions having hook portions at the tips and the upper ends of both leg portions. The hook portion is engaged so that the both leg portions straddle the edge of the seating sensor and a part of the pad main body, and the connecting portion presses a part of the front edge of the seating sensor. It is to be locked to the stop member.

  The seating sensor mounting structure according to the present invention can firmly connect the edge of the seating sensor to the pad body.

  In addition, when a part of the pad main body located between the leg portions of the fixture is urged by an elastic force in a direction in which the hook portion is locked to the locked member, the fixture is locked. It can be reliably locked without being accidentally dropped from the member.

  According to the present invention, the edge of the seating sensor can be firmly connected to the pad main body, and the end 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 8 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 seating portion 2 in the center in the width direction (left-right direction) and side portions 4, 4 formed in a bulging shape upward on the left and right sides. ing.

  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 along the boundary between the seat portion 2 and the side portion 4, and a rear horizontal groove 16 connecting the rear ends of the left and right vertical grooves 15, 15; The front horizontal groove 17 connecting the front sides of the left and right vertical grooves 15, 15, and the middle vertical groove 18 connecting the rear horizontal groove 16 and the intermediate 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 so that the wires are exposed in the grooves at the deep bottom portions 15a, 16a, 17a, 18a. Buried. 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.

  At the front and rear portions of the seating sensor 30 on both the left and right sides, substantially C-shaped mounting pieces 34 and 34 respectively project, and each mounting piece 34 has a C-ring as a fixture on the exposed portion of the vertical line portion 20A. 35, respectively. 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 locked portion 40 at the front of the seating sensor 30, and attachment pieces 39 a and 39 b are extended from the edge of the opening 37. Each mounting piece 39a, 39b is connected to an exposed portion of the middle line portion (locking wire) 22 via a C-ring 36.

  The locked portion 40 is pressed from above by the fixture 50 toward the pad body 10 side. As shown in FIGS. 6 and 7, the fixture 50 includes a pair of substantially parallel leg portions 52 and 52 each having a hook portion 51 at the tip, and a connecting portion 53 that connects the upper ends of both the leg portions 52 and 52. It is integrally formed of a synthetic resin material or a metal rod. The hook portions 51 and 51 are perpendicular to the connecting portion 53 and face the same direction.

  Further, the interval (length of the connecting portion 53) L1 between the leg portions 52, 52 is set to be equal to or less than the longitudinal length L2 of the locking portion 41 of the pad main body 10. Here, the locking portion 41 corresponds to a portion provided between the first deep bottom portion 18a1 and the second deep bottom portion 18a2 provided in the front portion of the middle vertical groove 18 of the pad main body 10. Moreover, since the upper surface of the latching | locking part 41 is corresponded to the bottom face of the middle vertical groove 18, it is lower than the upper surface of the bottom receiving part 2B.

  As shown in FIGS. 6 and 8, guide portions 43 and 44 are extended below the first deep bottom portion 18a1 and the second deep bottom portion 18a2. The guide portions 43 and 44 are arranged so that the locking wire 22 and the deep bottom portions 18a1 and 18a2 can be moved while guiding the fixing device 50 (leg portions 52 and 52) downward when the fixing device 50 is pushed in. Between. Further, the distance L3 between the wire 22 and the inner surfaces of the deep bottom portions 18a1 and 18a2 is preferably set to a maximum width L4 or less (L3 ≦ L4) of the hook portion 51 as shown in FIG. 8A. .

  Next, the case where the front part of the seating sensor 30 is fixed with the fixing tool 50 will be described. First, the locked portion 40 of the seating sensor 30 is placed on the locking portion 41 of the pad main body 10, and the fixing members 50 are pushed in such that the leg portions 52, 52 straddle the front and rear surfaces of the locking portion 41. At this time, the inclined surface 51a of each hook portion 51 of the fixture 50 is brought into contact with and pushed into the locking wire 22, thereby sliding the locking wire 22 and sliding the first deep bottom portion 18a1 and the second depth. It descends along the bottom 18a2 and the guides 43 and 44 (see FIGS. 8B and 8C).

  After the hook portion 51 passes through the locking wire 22, the hook portions 51 and 51 are engaged with the locking wire 22 while pulling the fixture 50 slightly upward (see FIG. 8D). At this time, even if the entire circumference of the locking wire 22 is not exposed, the pad main body 10 is made of a foamed molded body, so that the hook portions 51 and 51 can be easily bited into the pad main body 10. The connecting portion 53 presses the locked portion 40 of the seating sensor 30 against the locking portion 41 from above, and the locking portion 41 urges the fixing device 50 in the direction of engaging the locking wire 22 by elastic force. Therefore, the fixing device 50 is not inadvertently detached from the locking wire 22. Moreover, since the leg parts 52 and 52 straddle the front-back surface of the latching | locking part 41, there is no backlash in the front-back direction, and the front part of the seating sensor 30 can be fixed reliably. Moreover, since the fixture 50 is guided by the guide portions 43 and 44, it can be easily and quickly locked to the locking wire 22.

  As described above, the both side edges and the front edge of the seating sensor 30 are connected to the pad main body 10, so that when the skin (not shown) is put on the pad main body 10 and the seating sensor 30, the seating sensor 30 ( In particular, the front edge portion of the seating sensor 30 does not rip, and the skin can be covered quickly and easily. The skin is appropriately connected to the locking wires 20, 21, and 22, and the workability of a series of work steps is improved. Note that the rear edge of the seating sensor 30 connects the rearmost mounting piece 39b to the locking wire 22, so that it will not be carelessly wound.

  Moreover, since the fixing tool 50 is accommodated in the middle vertical groove 18 when the seating sensor 30 is fixed, it is possible to obtain a good seating comfort without causing discomfort to the seated person.

  The present invention is not limited to the embodiment described above. For example, the fixture 50 may be as shown in FIG. Specifically, the front and rear leg portions 52 and 52 are composed of left and right leg portions 52a and 52b that sandwich the locking wire 22 from the left and right (four-leg structure). The left and right leg portions 52a and 52b have a predetermined interval, and hook portions 51a and 51b that are opposed to each other are provided at the tips.

  Guide inclined surfaces 52c and 52d approaching upward are formed on the lower surfaces (tip surfaces) of the hook portions 51a and 51b. Therefore, when the fixing tool 50 is locked to the locking wire 22, when the fixing tool 50 is pushed along the locking wire 22, the guide inclined surfaces 52 c and 52 d slide the locking wire 22. The left and right leg portions 52a and 52b are slightly separated from each other against the elastic force, and the locking wire 22 can be positioned between the left and right leg portions 52a and 52b. Thereafter, the hooks 51 a and 51 b are prevented from being detached from the locking wire 22, so that the fixing tool 50 is not detached, and the fixing tool 50 can be reliably locked to the locking wire 22.

  9 has guide inclined surfaces 52c and 52d provided on the leg portions 52a and 52b facing each other with the locking wire 22 as the center, the guide body 43 is provided on the pad main body 10. 44 need not be provided.

  Although the front edge portion of the seating sensor 30 is illustrated as being fixed by a single fixing tool 50, it is also possible to fix the seating sensor 30 with a predetermined interval in the left-right direction. is there. In such a case, a plurality of locking wires 22 are embedded in the pad main body 10.

  In addition, the fixture 50 is not limited to the front edge portion of the seating sensor 30, and can also fix the rear edge portion and the left and right edge portions. 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. (A) It is sectional drawing which shows the principal part just before locking the fixing tool to the locking wire, (b) It is sectional drawing which shows the principal part in the state which locked the fixing tool to the locking wire. . (A) The perspective view which shows the principal part just before locking the fixing tool to the locking wire, (b) The perspective view which shows the main part in the state which locked the fixing tool to the locking wire. . (A)-(d) is sectional drawing which each shows the process of latching the fixing tool to the wire for latching. It is the perspective view which latched the fixing tool which concerns on other embodiment of this invention to the wire for latching. It is a cross-sectional perspective view of the conventional seat cushion pad.

Explanation of symbols

10 Pad Main Body 20 Locked Member 20A Vertical Lined Part 21 Locked Member 22 Middle Lined Part (Locked Member)
30 Seat sensor 43, 44 Guide part 50 Fixing tool 51 Hook part 52 Leg part 52a, 52b Left and right leg part 53 Connection part

Claims (6)

A pad body made of a foam having elasticity, and a flexible seating sensor provided on a surface of the pad body, and a member to be locked is embedded in the pad body, and the member to be locked In the cushion pad with a seating sensor for connecting the edge of the seating sensor to the pad body by locking the fixing tool to the pad body,
The locked member includes a pair of left and right vertical line parts and a middle line part located between the vertical line parts, and the left and right edges of the seating sensor are connected via a fixture. A seat cushion pad with a seating sensor, wherein the seat cushion pad is connected to a vertical line portion, and a front edge portion of the seating sensor is connected to a middle line portion via a fixture.   The fixture for fixing the front edge portion of the seating sensor includes front and rear leg portions having a hook portion at a tip, and a connecting portion for connecting both leg portions, and the both leg portions are part of the front edge portion of the seating sensor. The seat cushion pad with a seating sensor according to claim 1, wherein the hook portion is engaged with the middle line-shaped portion so that the connecting portion presses a part of the front edge portion.   A groove extending in the front-rear direction is provided on the surface of the pad main body, and the vertical line portions are embedded in the groove intermittently exposed along the groove, and the hook portion of the fixing tool is embedded in the exposed portion. The seat cushion pad according to claim 2 to be locked.   The seat cushion pad according to claim 3, wherein when the fixing tool is pushed in, a guide portion that guides the fixing tool extends from the groove.   A seating sensor provided on the surface of the pad body by embedding a locked member made of a linear material in a pad body made of a foam having elasticity, and locking a fixture to the locked member In the mounting structure of the seating sensor for connecting the edge of the leg to the pad main body, the fixture comprises a pair of leg portions having hook portions at the tips, and a connecting portion for connecting the upper ends of the both leg portions. The hook portion is locked to the member to be locked so as to straddle the edge portion of the seating sensor and a part of the pad main body and so that the connecting portion presses a part of the front edge portion of the seating sensor. The mounting structure of the seating sensor.   The seating sensor mounting structure according to claim 5, wherein a part of the pad main body located between both legs of the fixing member is urged by an elastic force in a direction in which the hook portion is locked to the locked member. .

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