JP6523737B2 - Seat with detector - Google Patents

Description

  The present invention relates to a seat with a detector, and more particularly, to a seat provided with a detector that detects an object value that changes when a seated person sits on the seat.

  A seat provided with a detector such as a sensor is already known. For example, a seat provided with a pressure sensor for detecting the pressure (seating pressure) applied to each part of the seating surface when a seated person is seated on the seat is known. ing. In such a seat, a pressure sensor is usually disposed directly below the seating surface. On the other hand, an apparatus (signal receiving unit) that receives a signal output when the pressure sensor detects a seating pressure is disposed at a position away from the pressure sensor, and for example, the back side of the pad material that constitutes the seating surface The case where it arrange | positions on the opposite side to a surface can be considered. In such a case, it is possible to adopt a configuration in which a through hole is formed in the pad material and the transmission path is passed through the through hole, for example, because the transmission path of the signal output from the pressure sensor is shortened as much as possible. reference).

JP, 2013-95373, A

  By the way, about said transmission path, it may be divided into the part extended from the pressure sensor, and the part extended from the signal receiving part. In such a case, there will be a connecting portion connecting the two portions constituting the transmission path. It is conceivable that this connection portion is disposed in the above-mentioned through hole in order to avoid damage due to interference with peripheral members and the like. However, even if the connection portion is disposed in the through hole, when a relatively large load is applied around the through hole, the load is transmitted to the connection portion, whereby the connection portion may be bent and damaged.

  Therefore, the present invention has been made in view of the above problems, and its object is to arrange a connection portion in a through hole provided in a pad material in a transmission path of a signal output from a detector. To provide a sheet with a detector capable of properly regulating the bending of the connection portion.

According to the sheet with a detector of the present invention, the subject outputs a detector that detects a target value that changes when a seated person sits on the seat, and outputs when the detector detects the target value. A first transmission path forming portion forming a portion extending from the detector among the transmission paths of signals, and a second portion forming a portion extending from a signal receiving portion receiving the signal among the transmission paths A bending control member for restricting bending of a connection portion between a transmission path forming portion, a portion formed by the first transmission path forming portion and a portion formed by the second transmission path forming portion of the transmission path; A pad member provided in the inside, and a through hole formed from one end to the other end in the thickness direction of the pad member, the transmission path being inserted by inserting the bending restricting member into the through hole Passes through the through hole, and the first transmission path forming portion, Second channel forming portion, further comprising a holding film for holding the connecting portion, the holding film, by being fixed on the outer surface of said bending regulating member in a state of being wound around the bending regulating member, wherein The bending restricting member is solved by restricting the bending of the connection portion.

In the sheet with the detector of the present invention configured as described above, the bending restricting member may bend a connecting portion between a portion extending from the detector and a portion extending from the signal receiving portion in the transmission path. Regulated by Further, the bending restricting member is to be inserted into the through hole provided in the pad material. Thus, the connection portion is disposed in the through hole in a state of being restricted by the bending restriction member so as not to bend.
Further, in the above configuration, each transmission path forming portion is fixed to the outer surface of the bending restriction member by winding the holding film around the bending restriction member. With such a configuration, it becomes easy to fix each transmission path forming portion on the outer surface of the bending restricting member.

Further, in the above-mentioned sheet with a detector, the connection portion is a fastening member to which both ends of the first transmission path forming portion and the second transmission path forming portion are fastened, and the bending restricting member is The bending of the connection portion may be restricted by fixing the fastening member and the both ends on the outer surface of the bending restricting member.
In the above configuration, the bending of the connecting portion is restricted by fixing the fastening member and the end of each transmission path forming portion on the outer surface of the bending restricting member. With such a configuration, bending of the connection portion can be restricted with a simpler configuration.

Further, in the above-described sheet with a detector, the bending regulating member may be made of a resin material and have the outer surface curved in an elliptical shape.
In the above configuration, the bending restricting member is formed of a resin molded product having an elliptically curved outer surface. With such a configuration, when fixing the end portions of the fastening member and each transmission path forming portion, there is no angularly extended portion on the outer surface of the bending restricting member. It is possible to suppress the occurrence of damage when coming into contact with the end.

In the sheet with the above-described detector, a plurality of the detectors are provided, and the first transmission path forming unit, the second transmission path forming unit, and the fastening member are provided for each of the detectors. The holding film is attached to each of the first transmission path forming portion, the second transmission path forming portion, and the fastening member for each of the detectors, holds each of the holding film , and the holding member is the fastening member. And the portion attached to the both ends is fixed on the outer surface in a state of being wound around the bend restricting member along the outer surface, so that the bend restricting member bends the connection portion. You should regulate.
In the above configuration, by winding the portion of the holding film to which the fastening member and the end of each transmission path forming portion are attached around the bending restricting member, the end of the fastening member and each transmission path forming portion is the bending restricting member. It is fixed to the outer surface. With such a configuration, it becomes easy to fix the fastening member and the end of each transmission path forming portion on the outer surface of the bending restricting member.

In the above-mentioned sheet with a detector, the holding film has a first portion and a second portion which have different widths and are adjacent to each other, and the first portion having a wider width is the fastening member and the above-mentioned. The second portion, which is a portion attached to both ends and is wound around the bending restricting member along the outer surface, is attached to the first transmission path forming portion for each of the detectors. The bending restricting member is provided at its end with a partially cut-out hook-like portion, and in a state in which the first portion is wound around the bending restricting member, the second portion is the hook It is good if it has entered in the crevice formed by cutting out the above-mentioned portion of a part.
In the above configuration, when the wider first portion of the holding film is wound around the bending restricting member, the narrower second portion enters the recess of the hook-like portion. With such a configuration, when the first portion is wound around the bending restricting member, the second portion enters into the recess and is locked to the inner wall of the recess, thereby suppressing the positional deviation of the first portion. It is possible to As a result, the first portion can be favorably wound around the bending restricting member.

In the above-mentioned sheet with a detector, the bending restricting member is inserted into the through hole in a state along a partial region in the inner wall surface of the through hole, and the inside of the through hole is It is good for the said one part area | region in a wall surface to be an inclined surface.
In the above configuration, in the inner wall surface of the through hole, the region along which the bending restricting member is formed is an inclined surface. Thus, the bending restricting member can be easily accommodated in the through hole, and it is possible to suppress a problem that may occur when the bending restricting member protrudes from the through hole, for example, giving a feeling of foreign matter when the seat is seated. .

In the above-mentioned sheet with a detector, an end closer to the detector is one of both ends of the part in the thickness direction of the partial area in the inner wall surface of the through hole. It may be an inclined surface which is inclined so as to be located forward of the end farther from the detector.
In the above configuration, in the partial region which is an inclined surface in the inner wall surface of the through hole, the end closer to the detector in the partial region is the end closer to the detector Located more forward than. With such a configuration, when the seated person is seated on the seat, the bending restricting member inserted into the through hole, the fastening member, and the end portion of each transmission path forming portion are from the rear end portion of the buttocks of the seated person I will be more apart. As a result, it becomes possible to more effectively suppress giving a seated person a foreign body feeling when the seat is seated.

Further , according to the seat with a detector of the present invention, a detector that detects an object value that changes when a seated person sits on a seat, and a signal that is output when the detector detects the object value A first transmission path forming portion forming a portion extending from the detector among the transmission paths, and a second transmission path forming a portion extending from the signal receiving portion receiving the signal among the transmission paths A bending restricting member for restricting bending of a connecting portion between a forming portion, and a portion formed by the first transmission path forming portion and a portion formed by the second transmission path forming portion among the transmission paths; The provided pad member includes a through hole formed from one end to the other end in the thickness direction of the pad member, and the transmission path is formed by inserting the bending restricting member into the through hole. It passes through the through hole, the connecting portion, the first transmission line And two end portions of the second transmission path forming portion are fastened to each other, and a plurality of the detectors are provided at mutually different positions, and the plurality of detectors may include the plurality of detectors. The first detector and the second detector are arranged side by side in the state of leaving a space in the width direction of the sheet, and the first transmission path forming portion, the second transmission path forming portion and the fastening member are provided for each of the detectors. And a holding film attached to each of the first transmission path forming portion, the second transmission path forming portion, and the fastening member for each of the detectors. In the width direction, a portion sandwiched between the first detector and the second detector is on the outer side in the width direction, and a first extension portion extending along the width direction The inner side in the width direction, And a second extension portion extending along the width direction at a position rearward of the extension portion, and the through hole is positioned forward of the second extension portion in the pad material. It is solved by being formed in .
In the above-described configuration, in the holding film, the portion sandwiched between the first detector and the second detector in the width direction is the first extension portion located outside in the width direction and the inside extending in the width direction. And a second extending portion located rearward of the protruding portion. That is, in the portion of the holding film sandwiched between the first detector and the second detector, the second extension portion located inside in the width direction is more than the first extension portion located outside in the width direction. It is offset backwards. And the through-hole is formed in the space ensured by offsetting the 2nd extension part back. That is, the space for forming the through hole can be appropriately secured by offsetting the second extending portion.

In the above-described sheet with a detector, the through hole is formed such that the rear end of the through hole is positioned rearward of the front end of the first extending portion in the front-rear direction of the sheet. Good.
In the above configuration, the through hole is formed such that the rear end of the through hole is positioned rearward of the front end of the first extending portion in the front-rear direction of the sheet. With such a configuration, it is possible to more effectively utilize the reserved space by offsetting the second extension part to the rear.

According to the present invention, in the transmission path of the signal output from the detector, the connection portion between the portion extending from the detector and the portion extending from the signal receiving portion is provided in the through hole provided in the pad material. It is also possible to arrange the connecting portion and to restrict the bending of the connection portion by the bending restricting member.
Moreover, according to the present invention, it becomes possible to control bending of the connection portion with a simpler configuration.
Further, according to the present invention, when fixing the end portions of the fastening member and each transmission path forming portion on the outer surface of the bending restricting member, damage to the end portions of the fastening member and each transmission path forming portion is suppressed. It is possible to
Further, according to the present invention, it becomes easy to fix the fastening member and the end of each transmission path forming portion on the outer surface of the bending restricting member.
Further, according to the present invention, it is possible to favorably wind the first portion around the bending restricting member while suppressing the positional deviation of the first portion.
Further, according to the present invention, the bending restricting member can be easily accommodated in the through hole, and a defect which may occur when the bending restricting member protrudes from the through hole, for example, suppressing giving a feeling of foreign matter when the seat is seated It becomes possible.
Further, according to the present invention, it is possible to more effectively suppress giving a seated person a foreign body feeling when the seat is seated.
Further, according to the present invention, in a portion of the holding film sandwiched between the first detector and the second detector, the second extension portion positioned inward in the width direction is offset rearward to form a through hole. It is possible to properly secure the space for forming the
Further, according to the present invention, it is possible to more effectively utilize the space secured by offsetting the second extension part to the rear.

FIG. 2 shows an overall view of a sheet with a detector according to an embodiment of the present invention. It is a conceptual diagram which shows the transmission line of the output signal from a detector. It is a figure showing signs that a detector was attached to pad material. It is the top view which showed the detector, the transmission path formation part, the fastening member, and the holding film. It is the top view which showed the arrangement | positioning position of a detector. It is a perspective view showing a bending control member. It is the figure which showed the sensor unit before winding around a bending control member. It is the figure which showed the sensor unit after winding around a bending control member. FIG. 9 is a view when the sensor unit shown in FIG. 8 is viewed from the direction of A-A in the figure. It is a figure when the pad material and the sensor unit which are illustrated in FIG. 5 are cut | disconnected in the BB cross section in a figure. It is a figure showing a sheet with a detector concerning a modification.

<< About a sheet with a detector according to an embodiment of the present invention >>
Hereinafter, a sheet with a detector according to an embodiment (this embodiment) of the present invention will be described. In addition, below, the vehicle seat mounted in the vehicle is mentioned as a specific example, and is demonstrated. Further, in the following description, the “front-rear direction” corresponds to the front-rear direction of the seat, which is the front-rear direction as viewed from a seated person sitting on the vehicle seat, specifically, the front-rear direction of the vehicle (in other words, Direction). Further, the “width direction” corresponds to the width direction of the seat, and is the left-right direction as viewed from a seated person sitting on the vehicle seat.

  The basic configuration of a vehicle seat (hereinafter, the present seat S) according to the present embodiment is the same as the configuration of a normal vehicle seat. That is, as shown in FIG. 1, the main seat S includes a seat cushion S1 for supporting the buttocks of the seated person from below, a seat back S2 for supporting the seated person's back from behind, and a headrest S3 for supporting the seated person's head. And. FIG. 1 is a view showing the entire image of the present sheet S. As shown in FIG.

  The seat cushion S1 and the seat back S2 are configured by setting a pad material made of urethane or the like on a seat frame (not shown) and further covering the pad material with a skin material. In each of the pad materials of the seat cushion S1 and the seat back S2, grooves (suspension grooves) for suspending the skin material are formed long along a predetermined direction.

  Further, the present sheet S is provided with a pressure sensor 1 as a detector. More specifically, the present sheet S is provided with a plurality of pressure sensors 1, and the plurality of pressure sensors 1 are provided in a unitized state directly below the seating surface of the seat cushion S 1. And each pressure sensor 1 detects the pressure (seating pressure) applied to a seating surface, when a seating person seats on this sheet S in the arrangement position. Here, the seating pressure is a value that changes in a cycle according to the physiological activity of the seated person, specifically, breathing in the state where the seated person is seated on the main sheet S, and the target detected by the pressure sensor 1 It is a value.

  The pressure sensor 1 is a known pressure sensor, and for example, a piezo sensor type pressure sensor, a semiconductor piezo resistance type pressure sensor, a strain gauge type pressure sensor, an electrostatic capacity type pressure sensor, or a silicon resonant type type. It consists of a pressure sensor etc.

  Further, in the present embodiment, a unit (hereinafter, sensor unit 10) formed of a plurality of pressure sensors 1 is provided on the rear side portion of the seat cushion S1, as shown by a broken line in FIG. Further, each pressure sensor 1 in the sensor unit 10 is disposed at a position sandwiched between the pad material constituting the seat cushion S1 and the skin material covering the pad material so that the seating pressure can be detected with high accuracy. It is done. However, the sensor arrangement position is not limited as long as the seating pressure can be accurately detected. For example, the pressure sensor 1 may be disposed on the seating surface of the seat cushion S1.

  Further, when the seating pressure is detected, the pressure sensor 1 outputs a signal according to the detection result. The output signal is received by an ECU (Electronic Control Unit) 2 as shown in FIG. That is, in the present embodiment, the ECU 2 functions as a signal receiving unit that receives the output signal from each pressure sensor 1. FIG. 2 is a conceptual view showing a transmission path of an output signal from the pressure sensor 1.

  Furthermore, the ECU 2 according to the present embodiment performs signal processing such as noise removal processing and A / D conversion processing on the received signal, and functions as a signal processing unit. Furthermore, the ECU 2 according to the present embodiment performs arithmetic processing to determine the physiological state of the seated person based on the processed signal, and functions as an arithmetic unit. "Physical condition of the seated person" means the state of the seated person's body parts (including organs and nerves) such as awakening state, mental stability state and drunk state, and normality / abnormality of functions and functions of the seated person's body (including organs and nerves). . The ECU 2 according to the present embodiment has a function of determining the awake state of the seated person.

  The hardware configuration of the ECU 2 includes an input port and a controller. The controller performs signal processing on the output signal from the pressure sensor 1 input to the input port, and executes arithmetic processing using the processed signal (strictly, digital data). As a result of such arithmetic processing, the awakening state of the seated person at the present time is determined. A known determination method can be used as a method of determining the awakening state of the seated person based on the detection result of the pressure sensor 1 (that is, the detected value of the seating pressure). For example, as identifying a waveform indicating a periodic change in seating pressure from the detection result of the pressure sensor 1 and determining the awakening state of the seat occupant from the length of the period of the waveform (intelligibly, the interval between peaks) It is also good.

  Moreover, ECU2 which concerns on this embodiment is arrange | positioned in the downward position of seat cushion S1. That is, in the present embodiment, the ECU 2 is disposed on the opposite side to the pressure sensor 1 across the pad material P of the seat cushion S1. Further, the ECU 2 according to the present embodiment is disposed rearward of any arrangement position of the plurality of pressure sensors 1.

  As described above, in the present embodiment, the ECU 2 that receives the output signal from the pressure sensor 1 is disposed on the opposite side of the pad material P to the pressure sensor 1. In this configuration, in order to lay the transmission line of the output signal from the pressure sensor 1 up to the ECU 2, in the present embodiment, the through holes 20 are formed in the pad material P as shown in FIG. Then, by passing a portion forming a signal transmission path (transmission path forming portion) in the sensor unit 10 in the through hole 20, the transmission path passes through the through hole 20, and the end of the transmission path is It becomes connected to ECU2. FIG. 3 is a view showing how the sensor unit 10 is attached to the pad material P of the seat cushion S1.

  Hereinafter, the configuration for attaching the sensor unit 10 and the sensor unit 10 to the pad material P will be described in detail. First, a configuration example of the sensor unit 10 will be described. As shown in FIG. 4, the pressure sensor 1, the lead 3 as the first transmission path forming portion, the cable 4 as the second transmission path forming portion, and the fastening member The terminal connection member 5 and the holding film 6 are components of the main sensor unit 10. FIG. 4 is a plan view showing the sensor unit 10 in a developed state.

  As described above, a plurality of pressure sensors 1 are provided in the sensor unit 10. In the present embodiment, six pressure sensors 1 are provided as shown in FIG. However, the number of pressure sensors 1 is not limited to six, and any number may be set as long as it is two or more. In the following description, when each of the six pressure sensors 1 is distinguished, they are referred to as a pressure sensor A, a pressure sensor B, a pressure sensor C, a pressure sensor D, a pressure sensor E, and a pressure sensor F.

  In a state where the sensor unit 10 is attached to the pad material P, the six pressure sensors 1 are arranged such that the coordinates of the arrangement position of each pressure sensor 1 differ from each other in the XY coordinate space as shown in FIG. There is. Here, the XY coordinate space is a two-dimensional coordinate space defined when both the width direction and the front-rear direction are taken as the axial direction of the coordinate axis. In addition, to describe the coordinates of the origin position in the XY coordinate space, the X coordinate is the central position of the seating surface in the width direction, and the Y coordinate is a position slightly behind the central position of the seating surface in the front and rear direction It has become. FIG. 5 is a plan view showing the arrangement position of each pressure sensor 1. In addition, in FIG. 5, in order to make the arrangement position of the pressure sensor 1 intelligible, some components (for example, conducting wire 3) other than the pressure sensor 1 are abbreviate | omitted.

More specifically, the six pressure sensors 1 are separately arranged in the front and back direction as shown in FIG. 5. Specifically, the four pressure sensors 1 on the rear side are arranged. However, two pressure sensors 1 are arranged in line along the width direction on the front side. In addition, the six pressure sensors 1 are disposed symmetrically with respect to the Y axis (that is, the center position in the width direction of the seating surface). Incidentally, the coordinates of the arrangement position of each pressure sensor 1 are as follows.
(Arrangement position of pressure sensor A) = (Xa, 0) Xa is any real number greater than 0 (Arrangement position of pressure sensor B) = (Xb, 0) Xb is a real number greater than 0 and less than Xa (pressure sensor C Arrangement position) = (Xb, Yc) Yc is an arbitrary real number greater than 0 (Arrangement position of pressure sensor D) = (-Xb, Yc)
(Arrangement position of pressure sensor E) = (− Xb, 0)
(Arrangement position of pressure sensor F) = (− Xa, 0)

  The conducting wire 3 forms a portion extending from the pressure sensor 1 in the transmission line of the signal output from the pressure sensor 1 and is constituted by a metal wire having a relatively small wire diameter and an insulating coating . The wire 3 is provided for each pressure sensor 1. That is, the sensor unit 10 is provided with a total of six conducting wires 3.

  The cable 4 forms a portion extending from the ECU 2 in the transmission path of the signal output from the pressure sensor 1 and is made of a wire having a wire diameter somewhat larger than that of the conducting wire 3. This cable 4 is also provided for each pressure sensor 1 as in the case of the lead 3. That is, the sensor unit 10 is provided with a total of six cables 4. The six cables 4 are bundled at a near position connected to the ECU 2 and connected to the ECU 2 as a single stranded wire.

  The terminal connection member 5 constitutes a connection portion between a portion formed by the conductor 3 and a portion formed by the cable 4 in the transmission line of the signal output from the pressure sensor 1. If it demonstrates more concretely, the terminal connection member 5 consists of a metal piece which has electroconductivity, the end part of the conducting wire 3 is fastened by one end part, and the end part of the cable 4 is fastened by the other end part. The terminal connection member 5 is provided for each pressure sensor 1. That is, the sensor unit 10 is provided with a total of six terminal connection members 5.

  The holding film 6 has a surface layer and a back layer, and sandwiches the six pressure sensors 1 and the lead wires 3 for each pressure sensor 1, the cable 4 and the terminal connecting member 5 between these two layers and holds them. It is a thing. That is, in the sensor unit 10, each pressure sensor 1, the lead wire 3 for each pressure sensor 1, the cable 4 and the terminal connection member 5 are held by the holding film 6 by being attached to the holding film 6. The holding film 6 is made of a conductive material, such as polyethylene naphthalate. In addition, the holding film 6 has a thickness and flexibility that can be easily deformed.

  Furthermore, as shown in FIG. 4, the holding film 6 according to the present embodiment is roughly divided into three regions, and specifically, is divided into a sensor attachment portion 6A, an intermediate portion 6B, and an expanded portion 6C. The sensor attachment portion 6A is an area in the holding film 6 to which the pressure sensor 1 is attached. When the sensor unit 10 is attached to the pad material P, the sensor attachment portion 6A is placed on the upper surface of the pad material P, that is, the surface on which the load from the occupant is applied.

  In addition to the pressure sensor 1, a lead 3 extending from the pressure sensor 1 is also attached to the sensor attachment portion 6 </ b> A. The conducting wire 3 extending from each pressure sensor 1 extends along the outer edge of the sensor mounting portion 6A toward the middle portion 6B as shown in FIG.

  The sensor mounting portion 6A will be described in more detail. As shown in FIG. 4, the sensor mounting portion 6A has a substantially circular portion to which the pressure sensor 1 is mounted and a substantially linear shape connecting the two pressure sensors 1 with each other. And an extended portion. Among these, as to a portion communicating between the pressure sensors 1, between the pressure sensors A and B, between the pressure sensors B and C, between the pressure sensors C and D, between the pressure sensors D and E, and the pressure sensor E. , F are provided respectively. Moreover, about the part which connects between pressure sensors C and D, as shown in FIG. 5, in the state in which the sensor unit 10 was attached to the pad material P, it has extended in the width direction. Here, the pressure sensors C and D are disposed on the front side among the six pressure sensors 1 and arranged in two spaced-apart manner in the width direction (the two pressure sensors 1 (first detector and (Corresponding to a second detector). In this sense, in the sensor mounting portion 6A, the portion communicating between the pressure sensors C and D corresponds to the portion sandwiched between the first detector and the second detector in the width direction.

  Further, as shown in FIG. 5, the portion connecting the pressure sensors C and D is a first extension portion 6m that is further outside in the width direction and a second extension portion 6n that is more inside in the width direction. And. Two first extending portions 6m are provided so as to sandwich the second extending portion 6n, and extend linearly in the width direction. The second extending portion 6n extends linearly along the width direction at a position rearward of the first extending portion 6m. That is, in the sensor attachment portion 6A of the holding film 6, the portion connecting the pressure sensors C and D has a shape in which the central portion in the width direction (portion corresponding to the second extension portion 6n) is offset somewhat backward There is.

  The middle portion 6B is a substantially strip-shaped portion extending from the second extending portion 6n described above, and the middle position of the conducting wire 3 extending from the pressure sensor 1 is attached. If it demonstrates more concretely, as shown in FIG. 4, a total of six conducting wire 3 will be attached to the intermediate part 6B so that it may arrange in parallel at equal intervals. And in the state where sensor unit 10 was attached to pad material P, middle part 6B has entered penetration hole 20 of pad material P from the halfway position.

  The extension portion 6C is a substantially rectangular portion (portion corresponding to a first portion) which is adjacent to the middle portion 6B on the opposite side to the sensor attachment portion 6A and wider than the middle portion 6B. In other words, the middle portion 6B is a portion (portion corresponding to the second portion) which is adjacent to the extension portion 6C and narrower than the extension portion 6C. Attached to the extended portion 6C are the lead 3 extending from the pressure sensor 1, the cable 4 extending from the ECU 2, and the terminal connection member 5 obtained by fastening the end of the lead 3 and the end of the cable 4 There is. More specifically, as shown in FIG. 4, in the extended portion 6C, the lead 3, cable 4 and terminal connection member 5 (hereinafter, lead 3 etc.) provided for each pressure sensor 1 are equally spaced and parallel It is arranged to become.

  The interval at which the conductors 3 and the like are arranged in the extended portion 6C is wider than the interval at which the conductors 3 are arranged in the middle portion 6B. This is to avoid contact between the adjacent terminal connection members 5 in the extended portion 6C. Further, as shown in FIG. 4, the six terminal connection members 5 are arranged so that the positions are aligned at one end in the extension direction of the extended portion 6C (the end opposite to the side where the intermediate portion 6B is located). It is done. However, the present invention is not limited to this, and the arrangement position of each terminal connection member 5 may be shifted in the extension direction of the extension portion 6C.

  Then, in the state where the sensor unit 10 is attached to the pad material P, substantially the entire expansion portion 6C is accommodated in the through hole 20 of the pad material P. On the other hand, a portion of the cable 4 located on the front side of the extension portion 6C is out of the through hole 20 from the lower end of the through hole 20 and extends to the ECU 2.

  As described above, in the present embodiment, in the state where the sensor unit 10 is attached to the pad material P, the expanded portion 6C is accommodated in the through hole 20. Therefore, the terminal connecting member 5 is also accommodated in the through hole 20. It will be done. That is, in the transmission line of the output signal from the pressure sensor 1, the connection portion between the portion formed by the conductor 3 and the portion formed by the cable 4 is located in the through hole 20. Then, the connection portion is disposed in the through hole 20 so as to be disposed at an appropriate position with respect to the pad material P.

  Specifically, when the terminal connecting member 5 forming the connecting portion is on the upper surface of the pad material P, there is a possibility that a seated person feels a foreign object feeling when seated on the main sheet S. On the other hand, when the terminal connection member 5 is located below the pad material P, the terminal connection member 5 may interfere with the seat frame supporting the pad material P from below. Further, the holding film 6 to which the terminal connection member 5 is attached is also extended to the lower position of the pad material P, and there is a possibility that the holding film 6 may be damaged similarly by interference with the seat frame. On the other hand, if the terminal connecting member 5 and the expanded portion 6C of the holding film 6 to which the terminal connecting member 5 is attached are accommodated in the through holes 20 formed in the pad material P, the above problems are suppressed. It becomes possible to protect the connection member 5 and the holding film 6 appropriately.

  However, even if the terminal connecting member 5 forming the connecting portion is disposed in the through hole 20, the load may be transmitted to the terminal connecting member 5 when a relatively large load is applied around the through hole 20. is there. In such a case, the terminal connection member 5 (that is, the connection portion of the signal transmission path) may be bent and damaged. In particular, when the seated person stands with his / her knee on the seat cushion S1, the load applied to the portion of the pad material P on which the seated person's knee is placed becomes extremely large. At this time, assuming that the knee of the seated person is placed around the through hole 20, there is a possibility that an excessive load may be applied to the terminal connecting member 5 in the through hole 20. In this case, the terminal connecting member 5 holds The film 6 will be broken and damaged.

  So, in this embodiment, in order to control the bending of the above connection parts, it uses the bending control member 12 and arranges this bending control member 12 in the through hole 20 with the terminal connection member 5. Hereinafter, the bending control member 12 will be specifically described.

  The bending control member 12 is a component made of a resin material of plastic or silicone rubber, and has a hardness sufficient to control bending of the connection portion. Further, the bending restricting member 12 has an outer shape shown in FIG. FIG. 6 is a perspective view showing the bending restricting member 12.

  In the present embodiment, the bending restricting member 12 is formed of a cylindrical body having an elliptical cross section, and has an outer surface 12 a curved in an elliptical shape. In addition, the bending control member 12 is not limited to a hollow body such as a cylindrical body, and may be a solid body. Further, the cross-sectional shape of the bending restricting member 12 is not limited to an elliptical shape, and may be a circular shape or a polygonal shape.

  Further, the bending restricting member 12 is provided with a hook-like portion 12 b radially protruding from one end of the outer surface 12 a. The collar portion 12 b is formed over the entire circumference of the bending restricting member 12. Further, as shown in FIG. 6, a part of the bowl-like portion 12b is cut out in a rectangular shape, whereby a recess 12c is formed. The width of the recess 12 c (the length in the circumferential direction of the bending restricting member 12) is slightly longer than the width of the middle portion 6 B of the holding film 6.

  The bending restricting member 12 configured as described above is fixed on the outer surface 12 a of the terminal connecting member 5 and the ends of the wires 3 and the cable 4 fastened to the terminal connecting member 5. , Regulate the bending of the connection part. Specifically, in the holding film 6, the portion where the terminal connection member 5 and the respective end portions of the lead wire 3 and the cable 4 are attached, that is, the expanded portion 6C is attached to the bending restricting member 12 along the outer surface 12a. It is wound. Thereby, the terminal connection member 5 and the respective end portions of the conducting wire 3 and the cable 4 are fixed on the outer surface 12 a of the bending restricting member 12.

  Describing in more detail, when winding the expanded portion 6C around the bending restricting member 12, as shown in FIG. 7, in the expanded portion 6C, the region where the terminal connecting members 5 are lined with the insulating tape 7 for each of the terminal connecting members 5. Be coated. This makes it possible to avoid contact between the terminal connection members 5 when the expanded portion 6C is wound around the bending restricting member 12. FIG. 7 is a view showing the sensor unit 10 before the extension portion 6C is wound around the bending restricting member 12. As shown in FIG.

  Then, the expanded portion 6C in a state in which the region where the terminal connection members 5 are lined up is covered with the insulating tape 7 is wound around the bending restricting member 12, and then the expanded portion 6C wound around the bend restricting member 12 is adhered by an adhesive tape T. Surround and fix. Thereby, as shown in FIG. 8, in the sensor unit 10, the portion attached to the extension portion 6C of the holding film 6 (specifically, the conductor 3, the cable 4 and the terminal connecting member 5) is a bending restricting member It comes to surround 12 as a core material. FIG. 8 is a view showing the sensor unit 10 in a state in which the expanded portion 6C is wound around the bending restricting member 12. As shown in FIG.

  When winding the expanded portion 6C around the bending restricting member 12, as shown in FIG. 9, the middle portion 6B of the holding film 6 is intruded in the recess 12c formed in the ridged portion 12b of the bending restricting member 12. . FIG. 9 is a view when the sensor unit 10 shown in FIG. 8 is viewed from the direction of A-A in the figure.

  Then, when the intermediate portion 6B enters the concave portion 12c, even if positional deviation of the expanded portion 6C is about to occur when the expanded portion 6C is wound around the bending restricting member 12, the side end of the intermediate portion 6B is of the concave portion 12c. Since it is locked to the inner wall, the above-mentioned positional deviation is suppressed. As a result, the expanded portion 6C can be wound around the bending restricting member 12 favorably. In addition, when the extension 6C is wound around the bending restricting member 12, the configuration for suppressing the positional deviation of the extension 6C is mentioned, but the configuration is not limited to the recess 12c formed in the hook 12b. The outer surface 12 a of the bending restricting member 12 may be provided with a projection for suppressing displacement.

  Further, by providing the recess 12c in the collar portion 12b, it is not necessary for the wire 3 attached to the middle portion 6B and the middle portion 6B to get over the collar portion 12b. Thereby, it becomes possible to suppress that the conducting wire 3 abuts on the edge or the like of the collar portion 12b and is damaged.

  Further, in the present embodiment, the outer surface 12 a of the bending restricting member 12 is curved in an elliptical shape. That is, since there is no angular portion on the outer surface 12a, when the extended portion 6C is wound around the bending restricting member 12, the occurrence of damage when the extended portion 6C abuts on the outer surface 12a is suppressed It becomes possible. However, the shape of the outer surface 12 a of the bending restricting member 12 is not particularly limited, and the outer surface 12 a may be bent in a polygonal shape and have a corner portion.

  As described above, the terminal connecting member 5 is fixed to the outer surface 12 a of the bending restricting member 12 together with the conducting wire 3, the cable 4 and the extension portion 6 </ b> C, whereby the bending restricting member 12 is reinforced. That is, even if the terminal connection member 5 is supported by the bending restricting member 12 having a sufficient hardness and the load is temporarily input to the terminal connection member 5, the terminal connection member 5 resists the input load. It becomes possible to suppress the bending of 5.

  And when attaching the sensor unit 10 to the pad material P, the bending control member 12 in which the expansion part 6C was wound is inserted in the through-hole 20. As shown in FIG. Thereby, the transmission line of the output signal from each pressure sensor 1 passes through the through hole 20. Then, in the through hole 20, bending of the terminal connection member 5 (that is, bending of the connection portion) is restricted by the bending restricting member 12.

  Further, in the present embodiment, in the state where the sensor unit 10 is attached to the pad material P, the bending regulating member 12 is completely accommodated in the through hole 20 (in other words, it does not protrude from the through hole 20). As a result, when a seated person is seated on the main seat S, it is suppressed that a foreigner feel is felt. Hereinafter, the positional relationship between the bending restriction member 12 and the through hole 20 will be described.

  In describing the positional relationship between the bending restricting member 12 and the through hole 20, first, the configuration of the through hole 20 and the periphery thereof will be described with reference to FIG. The through hole 20 is formed in the pad material P from one end (upper end) to the other end (lower end) in the thickness direction of the pad material P. The opening on the upper end side of the through hole 20 has a size one size larger than the outer edge of the bending restricting member 12 (strictly speaking, the outer edge of the hook 12b).

  In the present embodiment, as shown in FIG. 5, the through holes 20 are formed at positions forward of the sensor attachment portion 6A of the six pressure sensors 1 and the holding film 6. This is because, if the pressure sensor 1 is disposed on the rear side of the seat cushion S1 and the through hole 20 is formed on the rear side of the seat cushion S1, the seated person may feel discomfort when seated on the main sheet S. is there. Further, as shown in FIG. 5, the through hole 20 is formed in the central portion of the pad material P in the width direction. This reflects the fact that the sensor mounting portions 6A of the six pressure sensors 1 and the holding film 6 have a left-right symmetrical structure with respect to the widthwise center position of the seat cushion S1.

  Furthermore, in the present embodiment, in the pad material P, the suspension for suspending the skin material at the front and the rear of the portion where the six sensor sensors 6 and the sensor attachment portion 6A of the holding film 6 are disposed. The groove Pa is formed along the width direction. And, as shown in FIG. 5, the through hole 20 is formed at a position slightly behind the hanging groove Pa on the front side. In this case, if the through hole 20 is formed at a position forward of the front hanging groove Pa, a part of the conducting wire 3 and the holding film 6 is disposed to straddle the above hanging groove Pa. It is because there is a possibility that trouble may be caused at the time of the hanging operation of the skin material.

  On the other hand, in the sensor attachment portion 6A of the holding film 6, with respect to the portion connecting the pressure sensors C and D, as described above, the width direction central portion (portion corresponding to the second extension portion 6n) is offset backward There is. That is, a space is secured in front of the central portion in the width direction of the portion communicating between the pressure sensors C and D. And in this embodiment, as shown in FIG. 5, the through-hole 20 is formed using the secured space. That is, in the present embodiment, a space for forming the through hole 20 is appropriately secured by offsetting a part of the sensor attachment portion 6A connecting the pressure sensors C and D to the rear. There is.

  Furthermore, in the present embodiment, as shown in FIG. 5, the rear end of the through hole 20 is closer than the front end of the width direction end (portion corresponding to the first extension portion 6m) of the portion connecting the pressure sensors C and D. A through hole 20 is formed to be located rearward. As a result, it is possible to more effectively utilize the space secured by offsetting the central portion in the width direction of the portion connecting between the pressure sensors C and D to the rear as the space for forming the through hole 20.

  Next, the positional relationship between the bending restricting member 12 and the through hole 20 will be described. In the state where the sensor unit 10 is attached to the pad material P, the bending restricting member 12 is a part of the inner wall surface of the through hole 20. It is inserted in the through-hole 20 in the state which followed the area | region. More specifically, as shown in FIG. 10, in the inner wall surface of the through hole 20, the region on the rear side is the inclined surface 20a. Of the two ends of the inclined surface 20a in the thickness direction of the pad material P, the upper end (the end closer to the pressure sensor 1) is the lower end (the end farther from the pressure sensor 1). It is inclined to be more forward than it is. FIG. 10 is a schematic cross-sectional view of the pad material P and the sensor unit 10 shown in FIG. 5 taken along the line B-B in FIG.

  The bending restricting member 12 is inserted into the through hole 20 along the area of the inner wall surface of the through hole 20, which is the above-described inclined surface 20a. That is, the bending restricting member 12 is disposed in the through hole 20 in a state of being inclined with respect to the thickness direction of the pad material P (strictly speaking, it is inclined forward). Thereby, the bending control member 12 comes to be accommodated in the through hole 20. More specifically, when the thickness of the pad material P is relatively thin, when the bending restriction member 12 is inserted into the through hole 20 in a state along the thickness direction of the pad material P, a part of the bending restriction member 12 (For example, the lower end portion) may protrude from the through hole 20. On the other hand, when the bending restricting member 12 is inserted into the through hole 20 in a state of being inclined with respect to the thickness direction of the pad material P, bending is restricted in the through hole 20 even if the thickness of the pad material P is thin. It is possible to fit the entire member 12.

  Moreover, the inclined surface 20a mentioned above inclines so that it may be located back as it goes to a lower end from an upper end. Therefore, the upper end (end closer to the pressure sensor 1) of the bending restriction member 12 in the state along the inclined surface 20a is located on the front side, and the lower end (further away from the pressure sensor 1) Section) will be located on the rear side. As a result, when the seated person sits on the main sheet S, the bending restricting member 12 can effectively suppress the feeling of foreign matter.

  If it explains intelligibly, among the bending control members 12 in the through hole 20, the upper end closer to the buttocks of the seated person is positioned more on the front side in the seat cushion S1. That is, when the seated person is seated on the main seat S, the upper end portion of the bending restriction member 12 is positioned forward of the buttocks of the seated person, specifically, near the crotch. Therefore, it is avoided in advance that the seated person feels a foreign object feeling by the upper end portion of the bending restricting member 12. On the other hand, the lower end portion of the bending restricting member 12 is positioned more rearward in the seat cushion S1. However, since the lower end portion (strictly, the lower end portion and the central portion) of the bending restricting member 12 is sufficiently separated from the buttocks of the seated person, the lower end portion of the bending restricting member 12 feels a foreigner feeling Is hard to think.

  As apparent from the above reasons, according to the configuration in which the inclined surface 20a is inclined so as to be positioned rearward from the upper end toward the lower end, it is effective to give a feeling of foreign matter to the seated person when the seat is seated. It is possible to

  In addition, about the inclination pattern of the inclined surface 20a, it is not limited to the above-mentioned content, For example, you may incline so that it may be located ahead as it goes to a lower end from an upper end. Alternatively, it may be inclined to the left (or to the right) from the upper end to the lower end. However, from the viewpoint of suppressing the feeling of foreign matter at the time of sitting, it is preferable to incline as described above, that is, to be positioned forward as going from the upper end to the lower end.

<< Other Embodiments >>
In the above embodiment, the sheet with a detector of the present invention has been described by way of an example. However, the above embodiments are merely examples for facilitating the understanding of the present invention, and are not intended to limit the present invention. That is, the present invention can be modified and improved without departing from the gist thereof, and the present invention naturally includes the equivalents thereof.

  Further, in the above embodiment, the pressure sensor 1 as a detector is disposed at a position directly below the seating surface of the seat cushion S1. However, other examples may be considered as to the type of detector and the arrangement position thereof. In the case of a detector, it is sufficient to detect an object value that changes when a seated person is seated on a seat, for example, a skeleton shape of the seated person (a skeleton of a portion of the seated person's body that is in contact with the seat. A shape sensor that detects a value corresponding to the shape), a potential sensor that detects a body potential of a seated person, or the like may be used. Moreover, speaking of the arrangement position of the detector, it is not limited to the upper surface of the pad material P of the seat cushion S1, but may be a surface other than the upper surface (for example, the lower surface) of the pad material P. Alternatively, it may be the front surface or rear surface of the pad material P of the seat back S2.

  Further, in the above embodiment, in order to restrict the bending of the terminal connecting member 5, the expansion portion 6C of the holding film 6 to which the terminal connecting member 5 is attached is wound around the bending restricting member 12, and the terminal connecting member 5 is bent. It was decided to fix on the outer surface 12 a of the regulating member 12. However, the configuration for restricting the bending of the terminal connecting member 5 by the bending restricting member 12 is not limited to the above content. For example, the bending of the terminal connection member 5 may be restricted by inserting the terminal connection member 5 and the extension portion 6C into the hole of the bending restriction member 12 which is a cylindrical body.

  Moreover, in said embodiment, although the vehicle seat was mentioned as an example and demonstrated as an application example of this invention, it is not limited to this. The present invention is also applicable to the general office chair C illustrated in FIG. FIG. 11 is a diagram showing an office chair C provided with a sensor unit 10 as a sheet with a detector according to a modification. The present invention is also applicable to a vehicle seat mounted on a vehicle other than a vehicle.

1 Pressure sensor (detector)
2 ECU (signal receiver)
3 Conductor (1st transmission line formation part)
4 Cable (2nd transmission line formation part)
5 Terminal connection member (fastening member)
6 Protective film 6A Sensor mounting part 6B Intermediate part (second part)
6C extension (first part)
6m 1st extension portion 6n 2nd extension portion 7 insulation tape 12 bending control member 12a outer surface 12b ridged portion 12c recess 20 through hole 20a inclined surface P pad material Pa hanging groove C office chair (sheet with detector )
S This sheet (sheet with detector)
S1 Seat cushion S2 Seat back S3 Headrest T Adhesive tape

Claims (9)

A detector that detects an object value that changes when a seated person sits on a seat;
A first transmission path forming unit that forms a portion of the transmission path of the signal output when the detector detects the target value, the portion extending from the detector;
A second transmission path formation unit that forms a portion of the transmission path that extends from a signal reception unit that receives the signal;
A bending restricting member for restricting bending of a connection portion between a portion formed by the first transmission path forming portion and a portion formed by the second transmission path forming portion among the transmission paths;
A pad material provided in the sheet, and a through hole formed from one end to the other end in the thickness direction of the pad material;
By inserting the bending restriction member into the through hole, the transmission path passes through the through hole,
It further comprises a holding film for holding the first transmission path forming unit, the second transmission path forming unit , and the connection portion ,
A detector characterized in that the bending restricting member restricts bending of the connection portion by fixing the holding film on the outer surface of the bend restricting member in a state of being wound around the bend restricting member. Sheet. The connection portion includes a fastening member to which both ends of the first transmission path forming portion and the second transmission path forming portion are fastened;
The bending restricting member restricts bending of the connecting portion by fixing the fastening member and the both ends on the outer surface of the bending restricting member. Seat with detector.   The sheet according to claim 2, wherein the bending restricting member is made of a resin material and has the elliptically curved outer surface. A plurality of the detectors are provided,
The first transmission path forming unit, the second transmission path forming unit, and the fastening member are provided for each of the detectors.
The holding film is attached to each of the first transmission path forming portion, the second transmission path forming portion, and the fastening member for each of the detectors , and holds each of the first transmission path forming portion, the second transmission path forming portion, and the fastening member .
In the holding film, the bending restriction is achieved by fixing the fastening member and the portions attached to the both end portions on the outer surface in a state of being wound around the bending restricting member along the outer surface. The sheet with a detector according to claim 2 or 3, wherein a member regulates bending of the connection portion. The holding film has a first portion and a second portion different in width and adjacent to each other,
The wider first portion is a portion attached to the fastening member and both ends, and is wound around the bending restricting member along the outer surface;
The narrower second portion is attached to the first transmission path forming portion for each of the detectors,
The said bending control member equips the edge part with the collar-like part which the part was notched,
In a state in which the first portion is wound around the bending restricting member, the second portion is in a recess formed by cutting out the portion of the hook-like portion. The sheet | seat with a detector of Claim 4. The bending restricting member is inserted into the through hole in a state along a partial region in the inner wall surface of the through hole,
The sheet with a detector according to any one of claims 1 to 5, wherein the partial region in the inner wall surface of the through hole is an inclined surface.   The part of the region in the inner wall surface of the through hole is an end of the both ends in the thickness direction of the part of the region where the end closer to the detector is farther from the detector The sheet with a detector according to claim 6, wherein the sheet has an inclined surface which is inclined so as to be located forward of the sheet. A detector that detects an object value that changes when a seated person sits on a seat;
A first transmission path forming unit that forms a portion of the transmission path of the signal output when the detector detects the target value, the portion extending from the detector;
A second transmission path formation unit that forms a portion of the transmission path that extends from a signal reception unit that receives the signal;
A bending restricting member for restricting bending of a connection portion between a portion formed by the first transmission path forming portion and a portion formed by the second transmission path forming portion among the transmission paths;
A pad material provided in the sheet, and a through hole formed from one end to the other end in the thickness direction of the pad material;
By inserting the bending restriction member into the through hole, the transmission path passes through the through hole,
The connection portion includes a fastening member to which both ends of the first transmission path forming portion and the second transmission path forming portion are fastened;
A plurality of the detectors are provided at mutually different positions,
The plurality of detectors include a first detector and a second detector which are arranged at intervals in the width direction of the sheet,
The first transmission path forming unit, the second transmission path forming unit, and the fastening member are provided for each of the detectors.
It further comprises a holding film attached to each of the first transmission path forming portion, the second transmission path forming portion, and the fastening member for each of the detectors,
In the holding film, a portion sandwiched between the first detector and the second detector in the width direction is
A first extension portion which is further outside in the width direction and extends along the width direction;
And a second extending portion which is inside the width direction and extends along the width direction at a position rearward of the first extending portion,
The through hole detector with a sheet you characterized in that it is formed to be positioned further forward than the second extending portion in the pad material.   9. The detection according to claim 8, wherein the through hole is formed such that the rear end of the through hole is positioned rearward of the front end of the first extension in the front-rear direction of the sheet. Sheet with a bowl.

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