JP5890161B2 - Seat device - Google Patents

Description

  The present invention relates to a seat device such as a vehicle, and is suitable in the technical field of detecting seating.

  As one of safety systems in vehicles, an alarm system for warning that a seat belt is not worn when riding is put into practical use. In this alarm system, a warning is issued when seat belt wearing is not detected in the state where seating of a person is detected. As a seat device used for such an alarm system, the following Patent Document 1 has been proposed.

  The seat device of Patent Document 1 includes a cushion pad made of foaming resin and a seating sensor that detects the seating of a person, and the cushion pad is foamed integrally with the seating sensor. As this molding technique, a support material, a seating sensor for detecting seating of a person, and a plate are sequentially laminated in a mold for molding a cushion pad, and a method of firing after supplying a urethane source liquid into the mold is exemplified. ing.

International Publication No. 2004/107919

  However, since the seating sensor of Patent Document 1 is integrated with the cushion pad, the seating sensor and the cushion pad are always in contact with each other. Therefore, even when an object lighter than a person is placed on the cushion pad, the seating sensor tends to malfunction due to the pressing force of the object.

  Therefore, an object of the present invention is to provide a seat device that can reduce erroneous detection.

  In order to solve such a problem, the present invention provides a seat device having a seating sensor having a cushion pad and at least one pressure-sensitive switch for detecting a load applied from the seating surface of the cushion pad, on the lower surface of the cushion pad. Has a recess formed at a position including the upper portion of the pressure sensitive switch, and the seating sensor is disposed below the bottom of the concave portion, and the bottom portion of the concave portion above the pressure sensitive switch, the seating sensor, A gap is formed between the seating sensor and the seating sensor is fixed directly or indirectly to at least a part of the lower surface of the cushion pad other than the bottom part of the concave portion above the pressure sensitive switch. To do.

  In such a seat device, a gap is formed between the seating sensor disposed below the bottom of the recess formed on the lower surface of the cushion pad and the bottom portion of the recess above the pressure-sensitive switch in the seating sensor. Is done. For this reason, compared with the case where the gap is not formed, it is possible to reduce the fact that the pressure sensitive switch is turned on by a load applied to the cushion pad when a load lighter than a person is placed. . In addition, the sensitivity of the pressure sensitive switch can be adjusted depending on the size of the gap. As described above, the erroneous detection can be structurally reduced without depending on the fact that the erroneous detection is electrically determined. On the other hand, in this seat device, since the seating sensor is directly or indirectly fixed to at least a part of the lower surface of the cushion pad other than the bottom portion of the concave portion above the pressure-sensitive switch, the lower surface of the cushion pad is It functions as a stopper that prevents the seating sensor from moving above the pad. Therefore, for example, even when the cushion pad moves up and down due to vibration or the like, it is possible to prevent the seating sensor and the cushion pad from contacting each other due to the vertical movement and the pressure sensitive switch from being turned on. Can do.

  The concave portion includes a first concave portion formed on a lower surface of the cushion pad and a second concave portion formed in a part of a bottom of the first concave portion, and the pressure-sensitive switch includes the second concave portion. Preferably, the seating sensor is directly or indirectly fixed to at least a part of the bottom of the first recess.

  In such a seat device, since the pressure-sensitive switch is arranged with a gap from the bottom of the second recess, as in the case described above, even if it does not depend on electrical misjudgment, it is structural. In addition, false detection can be reduced. In this seat device, since the seating sensor is fixed directly or indirectly to at least a part of the bottom of the first recess, the bottom of the first recess prevents the seating sensor from moving above the cushion pad. It functions as a stopper. Therefore, similarly to the above, it can be avoided that the seating sensor and the cushion pad come into contact with each other due to the vertical movement of the cushion pad and the pressure sensitive switch is turned on.

  Moreover, it is preferable that the said seating sensor is stored in the space of the said 1st recessed part or the space of the said 1st recessed part and the said 2nd recessed part.

  In such a seat device, when the cushion pad is placed on the placement surface of the placement member, when a load is applied to the cushion pad, it receives a pressing force from both the seat surface side and the lower surface side of the cushion pad. However, since the seating sensor is accommodated in the space of the recess, the seating sensor is not in contact with the placement member. Accordingly, the pressure-sensitive switch of the seating sensor is turned on by the pressing force from the seating surface side without being substantially affected by the pressing force on the bottom surface side. In general, the shape of the cushion pad on the seat surface side and the lower surface side is different, and due to this difference, the pressing force received from the seat surface side and the pressing force received from the lower surface side tend to be uneven. . In this regard, as described above, the pressure sensitive switch is turned on by the pressing force from the seating surface side, so that the pressing force received from the seating surface side and the pressing force received from the lower surface side are not uniform. However, it is not affected by the effect. Therefore, the sensitivity of the pressure sensitive switch can be easily adjusted.

  In addition, a space adjustment spacer that is adhered to at least a portion other than a bottom portion of the recess that is above the pressure-sensitive switch is further provided, and the seating sensor is directly or indirectly attached to at least a portion of the space adjustment spacer. It is preferable to be fixed.

  In such a seat device, the gap between the bottom of the recess and the pressure sensitive switch is the thickness of the space adjusting spacer. Therefore, similarly to the above, it is possible to structurally reduce false detections without relying on the determination of electrical false detections. In this seat device, since the seating sensor is directly or indirectly fixed to at least a part of the space adjustment spacer, the space adjustment spacer is a stopper that prevents the seating sensor from moving above the cushion pad. Function as. Therefore, similarly to the above, it can be avoided that the seating sensor and the cushion pad come into contact with each other due to the vertical movement of the cushion pad and the pressure sensitive switch is turned on.

  The fixing is preferably an adhesive fixing.

  With such fixing, the seating sensor can be held at a fixed position in the space of the recess even when the opening of the recess is not closed.

  The pressure-sensitive switch has a first insulating sheet, a second insulating sheet that is flexible and is disposed closer to the seating surface side of the cushion pad than the first insulating sheet, and the first insulating sheet. And a sheet-like spacer interposed between the second insulating sheets and having at least one opening formed thereon, and disposed on the spacer side surface of the first insulating sheet and the second insulating sheet, respectively. And at least part of the surface of the spacer facing the second insulating sheet is exposed from the second insulating sheet, and the exposed portion of the pressure-sensitive switch It is preferable that the adhesive is fixed to at least a part other than the bottom part of the recess corresponding to the upper part.

  In such a pressure sensitive switch, when a load is applied to the cushion pad, the cushion pad is deformed and presses the second insulating sheet disposed on the seat surface side of the cushion pad. Since the second insulating sheet has flexibility, it bends so as to enter the opening of the spacer interposed between the second insulating sheet and the first insulating sheet in response to the pressing of the cushion pad. By bending in this way, a pair of electrodes opposed to each other through the opening are electrically connected and become conductive, and the pressure sensitive switch is turned on. In addition, at least a part of the surface of the spacer facing the second insulating sheet is exposed from the second insulating sheet, and the exposed part is fixed to at least a part of the bottom of the recess with an adhesive. For this reason, even if the bonding between the second insulating sheet and the spacer is omitted, the second insulating sheet and the spacer can be arranged at fixed positions, so that the cost of the adhesive can be suppressed.

  Further, the fixing is performed when the seating sensor is clamped with a member provided below the seating sensor in a state in which the seating sensor is in contact with at least a part other than the bottom part of the recess that is above the pressure-sensitive switch. It is preferable that

  Such fixing can avoid using an adhesive for the cushion pad. When the seating sensor is bonded to the cushion pad, the cushioning property of the cushion pad may be changed depending on the type of adhesive. Therefore, the seating sensor can be held at a fixed position in the space of the recess while avoiding such a possibility. Further, the cushion pad and the seating sensor can be firmly fixed without peeling off the cushion pad and the seating sensor as in the case of using an adhesive.

  Moreover, it is preferable that the said seating sensor further has a cushion member which covers at least one part of the said pressure sensitive switch used as the seating surface side of the said cushion pad.

  In general, since the hardness of the cushion pad varies depending on the type of vehicle, etc., the degree of elastic deformation of the cushion pad varies depending on the type of the cushion pad depending on the person sitting. On the other hand, in this seat device, since there is a cushion member that covers at least a part of the pressure-sensitive switch on the seat surface side of the cushion pad, the cushion member is deformed in the same manner regardless of the hardness of the cushion pad. The pressure switch can be pressed. Therefore, even if there is a gap between the cushion member and the cushion pad, the pressure sensitive switch can be appropriately turned on. Further, the sensitivity of the pressure sensitive switch can be adjusted by the thickness of the cushion member.

  The pressure-sensitive switch has a first insulating sheet, a second insulating sheet that is flexible and is disposed closer to the seating surface side of the cushion pad than the first insulating sheet, and the first insulating sheet. And a sheet-like spacer interposed between the second insulating sheets and having at least one opening formed thereon, and disposed on the spacer side surface of the first insulating sheet and the second insulating sheet, respectively. Preferably, the first insulating sheet is harder than the second insulating sheet.

  According to such a seat device, when the second insulating sheet bends, the first insulating sheet has a smaller amount of bending than the second insulating sheet, and therefore the position of the electrode disposed on the first insulating sheet is approximately. Retained. For this reason, compared with the case where the flexible 1st insulating sheet is employ | adopted, even if the pressing force from a seat surface side is small, it arrange | positions at the electrode and 2nd insulating sheet which are arrange | positioned at a 1st insulating sheet. It becomes easy to contact an electrode. Therefore, the sensitivity of the pressure sensitive switch itself can be further improved.

  Moreover, it is preferable to further provide a reinforcing member provided on at least a part of the lower surface of the seating sensor.

  According to such a seat device, even when the space below the seating sensor is a space, the durability of the seating sensor itself can be improved.

  As described above, according to the seat device of the present invention, erroneous detection can be reduced.

It is a perspective view which shows the seat apparatus of 1st Embodiment. It is a perspective view which shows the structure of a seating sensor. It is a figure which shows a mode that the seating sensor was seen from the upper side, and the mode of the cross section of a seating sensor. It is a figure which shows the equivalent circuit of a seating sensor. It is a figure which shows the mode that the seat apparatus was seen from the upper side, and the mode of the cross section of a seat apparatus. It is a conceptual diagram which shows distribution of the load given to the base by which the seat part of a cushion pad is mounted from the person who seats normally on a cushion pad in three steps. It is a figure which shows a mode that a pressure sensitive switch turns on from the same viewpoint as (B) of FIG. It is a figure which shows the seat apparatus of 2nd Embodiment from the viewpoint similar to (B) of FIG. It is a figure which shows the seat apparatus of 3rd Embodiment from the viewpoint similar to (B) of FIG. It is a figure which shows the seat apparatus of 4th Embodiment from the viewpoint similar to (B) of FIG. It is a figure which shows the seat apparatus of 5th Embodiment from the viewpoint similar to (B) of FIG. It is a figure which shows the seat apparatus of 6th Embodiment from the viewpoint similar to (B) of FIG. It is the schematic where it uses for description of the relationship between the opening of a spacer, and a cushion pad.

  Hereinafter, a preferred embodiment of a seat device according to the present invention will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 is a perspective view showing a seat device 1 according to the first embodiment. As shown in FIG. 1, the seat device 1 of the present embodiment includes a seating sensor 7 and a cushion pad 8 as main components.

  FIG. 2 is a perspective view showing the structure of the seating sensor 7. The seating sensor 7 includes the first electrode sheet 10, the second electrode sheet 20, the spacer 30, and the cushion member 40 as main components.

  The first electrode sheet 10 includes a first insulating sheet 11, a plurality of first electrodes 12A to 12D, and a pair of terminals 13A and 13B. The first insulating sheet 11 has a flexible film shape and is connected to a substantially rectangular main block B1 and one end of the main block B1 in the short direction, and is a substantially rectangular sub-block smaller than the main block B1. B2. Examples of the material of the first insulating sheet 11 include resins such as PET, PBT, and PEN.

  The first electrodes 12 </ b> A to 12 </ b> D each have a substantially circular shape and are arranged on one surface of the first insulating sheet 11 in a state of being aligned in the same straight line. Each of the pair of terminals 13A and 13B has a substantially rectangular shape, and is disposed on the same surface as the surface on which the first electrodes 12A to 12D are disposed in the sub-block B2.

  The first electrode 12A and the first electrode 12B are electrically connected by the first wiring 14A, and the first electrode 12C and the first electrode 12D are electrically connected by the first wiring 14B. The first wiring 14A and the terminal 13A are electrically connected by the first wiring 14C, and the first wiring 14B and the terminal 13B are electrically connected by the first wiring 14D.

  The second electrode sheet 20 includes a second insulating sheet 21 and second electrodes 22A to 22D. The second insulating sheet 21 has a flexible film shape and has the same shape and size as the main block B <b> 1 in the first insulating sheet 11. Examples of the material of the second insulating sheet 21 include resins such as PET, PBT, and PEN.

  The second electrodes 22 </ b> A to 22 </ b> D each have a substantially circular shape and are arranged on one surface of the second insulating sheet 21 in a state of being aligned in the same straight line. In the present embodiment, the size of the second electrodes 22A to 22D is the same as that of the first electrodes 12A to 12D, and the arrangement positions of the second electrodes 22A to 22D are the positions of the first electrodes 12A to 12D with respect to the main block B1. It is relatively the same as the arrangement position.

  The second electrode 22A and the second electrode 22B are electrically connected by the second wiring 24A, and the first electrode 22C and the second electrode 22D are electrically connected by the second wiring 24B. The second wiring 24A and the second wiring 24B are electrically connected by the second wiring 24C.

  The spacer 30 has the same shape and size as the main block B1 in the first insulating sheet 11, and has a plurality of openings 31A to 31D. Examples of the material of the spacer 30 include resins such as PET, PBT, and PEN. These openings 31A to 31D have a substantially circular periphery, and the diameters of the openings 31A to 31D are slightly smaller than the diameters of the first electrodes 12A to 12D. In addition, the arrangement positions of the openings 31A to 31D are relatively the same as the arrangement positions of the first electrodes 12A to 12D with respect to the main block B1.

  In each of the openings 31A to 31D, slits 32A to 32D that are spatially connected to the outside of the spacer 30 are formed. That is, one end of each of the slits 32 </ b> A to 32 </ b> D is connected to the corresponding opening 31 </ b> A to 31 </ b> D, and the other end is opened to the side of the spacer 30.

  The cushion member 40 is an elastic member that deforms so as to be crushed when pressure is applied, and is formed of, for example, a sponge-like resin provided with a large number of holes, a nonwoven fabric in which resin fibers are entangled, rubber, or the like. . The cushion member 40 in the present embodiment has a substantially rectangular parallelepiped shape, and its wide surface is smaller than the wide surface of the second insulating sheet 21.

  FIG. 3 is a diagram illustrating a state of the seating sensor 7 as viewed from above and a cross-sectional state of the seating sensor 7. Specifically, FIG. 3A is a view showing the seating sensor 7 as viewed from above, and FIG. 3B is a cross-sectional view taken along line VV in FIG. It is a figure which shows a mode.

  As shown in FIG. 3B, the first electrode sheet 10 is affixed to one surface of the spacer 30 and the second electrode sheet 20 is affixed to the other surface of the spacer 30 to form one structure. SSB (hereinafter referred to as sheet structure).

  In this sheet structure SSB, a part of a pair of insulating sheets 11 and 21, a spacer 30 interposed between these sheet portions, and a pair of electrodes 12 A and 22 A facing each other through an opening 31 A provided in the spacer 30. A pressure sensitive switch SW1 is configured. In the present embodiment, the pair of electrodes 12A and 22A are opposed to each other with a predetermined distance while being accommodated in the opening 31A.

  In the sheet structure SSB, the pressure sensitive switches SW2 to SW4 shown in FIG. 3A are configured in the same manner as the pressure sensitive switch SW1. In this embodiment, the insulating sheets and spacers that are constituent elements of each of the pressure sensitive switches SW1 to SW4 are a part of one insulating sheet 11, 21 and spacer 30, but they may be separate from each other. good.

  Further, in the second insulating sheet 21 of the sheet structure SSB, the cushion member 40 that covers the openings 31A to 31D via the second insulating sheet 21 is provided in a substantially central region of the surface opposite to the surface facing the spacer 30. Is pasted. In addition, the area | region which is not covered with the cushion member 40 among the one surfaces of this 2nd insulating sheet 21 is the peripheral area | region AR of the 2nd insulating sheet 21. FIG.

  Thus, the seating sensor 7 has a structure in which the first electrode sheet 10, the spacer 30, the second electrode sheet 20, and the cushion member 40 are integrally laminated in this order.

  The seat device 1 according to the present embodiment includes a reinforcing tape 50 that improves the durability of the seating sensor 7. The reinforcing tape 50 is, for example, an adhesive tape having a base material of cloth, paper, metal, or the like, and is one surface of the first insulating sheet 11 on the lower side of the seating sensor 7 (the surface facing the spacer 30). Affixed to the opposite side). The reinforcing tape 50 may be the same size as the first insulating sheet 11 or a different size.

  FIG. 4 is a diagram showing an equivalent circuit of the seating sensor 7. As shown in FIG. 4, the set STA of the pressure sensitive switch SW1 and the pressure sensitive switch SW2 and the set STB of the pressure sensitive switch SW3 and the pressure sensitive switch SW4 are connected in parallel. Moreover, these sets STA and STB are connected in series, and are arrange | positioned between a pair of terminals 13A and 13B.

  FIG. 5 is a diagram illustrating a state in which the seat device 1 is viewed from above and a cross-sectional state of the seat device 1. Specifically, FIG. 5A is a view showing the seat device 1 as viewed from above, and FIG. 5B is a cross-sectional view taken along the line WW in FIG. It is a figure which shows a mode.

  As shown to (A) of FIG. 5, the cushion pad 8 is provided with the backrest part 8A and the seat part 8B as main components. The backrest 8A and the seat 8B are elastic members that deform so as to be crushed when pressure is applied, and are formed of, for example, urethane foam.

  As shown in FIGS. 5A and 5B, a groove-shaped first recess (hereinafter referred to as a shallow recess) 61 is 1 along the width direction of the cushion pad 8, for example, at the bottom of the seat 8B. It is formed as a step. In addition, a groove-shaped second concave portion (hereinafter referred to as a deep concave portion) 62 that is narrower than the width of the shallow concave portion 61 along the longitudinal direction of the shallow concave portion 61 is formed in a second stage at a part of the bottom of the shallow concave portion 61. Formed as.

  As shown in FIG. 5B, the depth DP1 of the shallow recess 61 is greater than the thickness TH1 of the sheet structure SSB and the reinforcing tape 50. The space SP1 of the shallow recess 61 includes the sheet structure SSB and A reinforcing tape 50 is accommodated. The peripheral area AR (FIG. 3A) of the second insulating sheet 21 and the bottom surface of the shallow recess 61 are attached by an adhesive AD, and the seating sensor 7 is fixed to the cushion pad 8. In addition, although the side surface of the shallow recessed part 61 shown by FIG. 5 (B) and the side surface of the sheet | seat structure SSB and the reinforcement tape 50 are in contact state, you may be in the state with a gap | interval. However, it is preferable that the seat structure SSB and the side surface of the reinforcing tape 50 are in contact with each other in terms of preventing the displacement of the seating sensor 7 and strengthening the fixing state of the seat portion 8B and the seating sensor 7. .

  The depth DP2 of the deep recess 62 is larger than the thickness TH2 of the cushion member 40. In the space SP2 of the deep recess 62, a gap GP is formed between the bottom surface of the deep recess 62 and the top surface of the cushion member 40 facing the bottom surface. The cushion member 40 is accommodated in a certain state. In addition, although the side surface of the deep recessed part 62 shown by FIG. 5 (B) and the side surface of the cushion member 40 have a gap, they may be in a contact state.

  As shown in FIG. 5A, the shallow recess 61 and the deep recess 62 in this embodiment are formed in front of the hip point HP of the person who normally sits on the cushion pad 8. For this reason, each pressure-sensitive switch SW1 to SW4 of the seating sensor 7 accommodated in the space SP1 of the shallow recess 61 is disposed in front of the hip point HP of the person who normally sits on the cushion pad 8.

  “Regular seating” means sitting with the back in contact with the backrest and the buttocks located deep in the seat, and “hip point” means the hips of a person who is seated It means the part that is at the bottom.

  FIG. 6 is a conceptual diagram showing, in three stages, the distribution of the load applied to the placement member PT on which the seat 8B of the cushion pad 8 is placed by a person who is normally seated on the cushion pad 8. Specifically, in FIG. 6, a region that receives the highest pressing force from the cushion pad 8 is indicated by a right diagonal line, a region that receives a pressing force smaller than the right diagonal region is indicated by a left diagonal line, and a region that receives a lower pressing force than the left diagonal region. A region that receives a small pressing force is indicated by a dot. In addition, the range width in each stage is comparable. Further, the right diagonal line is a line along the line connecting the upper right side of the paper and the lower left side of the paper surface, and the left diagonal line is a line along the line connecting the upper left side of the paper surface and the lower right side of the paper surface.

  The load applied by the person who normally sits on the cushion pad 8 is concentrated on the hip point on the seating surface of the seat portion 8B, but on the pedestal on which the cushion pad 8 is placed, as shown in FIG. The front is larger than the point HP.

  This is because the gravity of the thigh extending forward from the buttocks of the person who normally sits works in the vertical direction, and the gravity of the buttocks works in the forward direction in addition to the vertical direction. It is considered that the force that the gravity of the thigh and buttocks works in the forward direction is the force by which the backrest pushes the back. That is, when a person normally sits on the cushion pad 8, the back part 8A (FIG. 5A) pushes the back in contact with the back part 8A, and the force applied to the back pushes the person forward. thinking.

  Therefore, when the seat apparatus 1 is placed on a predetermined placement member in a vehicle or the like, as shown in FIG. 5A, the pressure sensitive switches SW1 to SW4 arranged in front of the hip point HP are As compared with the case where it is arranged in the vertical direction of the hip point HP, it receives a large pressing force. Thus, the sensitivity of the pressure sensitive switches SW1 to SW4 can be improved.

  The pressure sensitive switches SW <b> 1 to SW <b> 4 are disposed on the lower surface side of the seat portion 8 </ b> B in the cushion pad 8. Therefore, compared with the case where it arrange | positions to the seat surface side of the seat part 8B, the discomfort of the seating resulting from arrangement | positioning of the seating sensor 7 can be reduced.

  The pressure sensitive switches SW1 and SW2 are arranged on the right side and the pressure sensitive switches SW3 and SW4 are arranged on the left side with respect to the vertical plane VF passing through the center of the cushion pad 8 in the width direction. While the buttock of a person sitting on the cushion pad 8 is generally located on the left and right with respect to the vertical plane VF, the luggage is not necessarily located on the left and right with respect to the vertical plane VF. Therefore, it is more erroneous than when both the pressure sensitive switches SW1 and SW2 and the pressure sensitive switches SW3 and SW4 are arranged on the left side or the right side, or when the pressure sensitive switches SW1 to SW4 are arranged in a vertical plane VF. Detection can be suppressed.

  It is preferable that the pressure sensitive switch SW1 arranged on the left side of the vertical plane VF and the pressure sensitive switch SW4 arranged on the right side of the vertical plane VF are arranged symmetrically with respect to the vertical plane VF. The same applies to the pressure-sensitive switch SW2 disposed on the left side of the vertical plane VF and the pressure-sensitive switch SW3 disposed on the right side of the vertical plane VF.

  The pressure sensitive switches SW <b> 1 to SW <b> 4 are arranged on the same line in the width direction of the cushion pad 8. The pelvis of a person sitting on the cushion pad 8 is generally spread in the width direction of the cushion pad 8. Therefore, the sensitivity of the pressure sensitive switches SW1 to SW4 can be improved as compared with the case where the pressure sensitive switches SW1 to SW4 are arranged on the same line in the front-rear direction.

  FIG. 7 is a diagram illustrating a state in which the pressure-sensitive switch SW1 is turned on from the same viewpoint as FIG. As shown in FIG. 7, when a person sits on the cushion pad 8 of the seat device 1 placed on the placement member PT, the cushion pad 8 is pushed from both the seat surface side and the lower surface side of the seat portion 8B. Pressure is applied (see arrow).

  In this embodiment, since the space between the seating sensor 7 accommodated in the spaces SP1 and SP2 of the recesses 61 and 62 of the seat 8B and the placement surface of the placement member PT is a space, the seating sensor 7 is mainly used. Receives pressing force from the seat side. In the cushion pad 8 that has received such a pressing force, the cushion pad portion above the cushion member 40 is deformed so as to be bent and comes into contact with the upper surface of the cushion member 40 to press the cushion member 40. Due to this pressing force, the cushion member 40 is deformed to be crushed, and the second insulating sheet 21 is also pressed by this deformation.

  Since the second insulating sheet 21 is flexible, the second insulating sheet 21 enters the opening 31 </ b> A of the spacer 30 interposed between the second insulating sheet 21 and the first insulating sheet 11 in response to the pressing of the cushion pad 8. Bend. By bending in this way, the first electrode 12A and the second electrode 22A facing each other through the opening 31A are electrically connected and become conductive. Thus, the pressure sensitive switch SW1 is turned on.

  Note that a slit 32A (FIG. 2) that connects the opening to the outside is formed in the opening 31A in the present embodiment. For this reason, when the 1st insulating sheet 11 and the 2nd insulating sheet 21 bend, the air of 31 A of opening is discharged | emitted through the slit 32A, without staying in an opening. That is, it is avoided that the bending of the first insulating sheet 11 and the second insulating sheet 21 is suppressed by the air in the opening 31. Therefore, compared with the case where the slit 32A is not formed, the first electrode 12A and the second electrode 22A are easily in contact with each other, and the sensitivity of the pressure sensitive switch SW1 itself can be improved.

  By the way, when the thickness which the cushion member 40 is crushed is in the relation to be more than half of the distance between the first electrode 12A and the second electrode 22A, the cushion member 40 is deformed to be crushed without bending. The pressure sensitive switch SW1 can be turned on. Therefore, when such a relationship is adopted, the sensitivity of the pressure sensitive switch SW1 itself can be further improved.

  Moreover, although the 1st insulating sheet 11 has flexibility, it can employ | adopt the 1st insulating sheet hardened to such an extent that it does not have flexibility (it does not deform | transform even if a load is added). When such a 1st insulating sheet is employ | adopted, when the 2nd insulating sheet 21 bends, the position of 1st electrode 12A arrange | positioned at the 1st insulating sheet is hold | maintained, without a 1st insulating sheet bending. The For this reason, compared with the case where the first insulating sheet 11 having flexibility is employed, the second electrode 22A can easily come into contact with the first electrode 12A even if the pressing force from the seat surface side is small, and the pressure sensitive switch The sensitivity of SW1 itself can be further improved. However, the degree of hardness may be at least harder than the second insulating sheet 21. In addition, in the method of making the first insulating sheet 11 harder than at least the second insulating sheet 21, for example, a method of producing the first insulating sheet 11 with a material harder than the material of the second insulating sheet 21, or There is a method for producing the first insulating sheet 11 with a thickness larger than the thickness of the second insulating sheet 21. As a material of the 1st insulating sheet 11 in the case of making it harder than the 2nd insulating sheet 21, a metal etc. can be mentioned besides resin, such as PET mentioned above, PBT, or PEN.

  The matters described for the pressure sensitive switch SW1 are the same for the other pressure sensitive switches SW2 to SW4.

  As described above, in the seat device 1 according to the present embodiment, the gap GP is formed from the bottom of the deep recess 62 in the space perpendicular to the opening surface of the shallow recess 61 as shown in FIG. A pressure sensitive switch SW1 is arranged at a distance.

  When there is no gap GP, the pressure sensitive switch SW1 tends to be turned on only by applying a slight pressing force to the cushion pad 8. Therefore, in the seat device 1 of the present embodiment, the pressure-sensitive switch SW1 is turned on by the pressing force applied to the cushion pad 8 when a baggage lighter than a person is placed, as compared with the case where there is no gap GP. This can be reduced. Further, the size of the gap GP can be adjusted so that the pressure sensitive switch SW1 is turned on by the pressing force applied to the cushion pad 8 when a person is seated. As described above, the erroneous detection can be structurally reduced without depending on the fact that the erroneous detection is electrically determined.

  In the case of this embodiment, the seating sensor 7 is fixed to the lower surface of the cushion pad 8 (the bottom surface of the shallow recess 61) other than the bottom portion of the deep recess 62 facing the pressure sensitive switch SW1. Specifically, the peripheral region AR (FIG. 3A) opposite to the surface facing the spacer 30 in the second insulating sheet 21 and the bottom surface of the shallow recess 61 face each other without a gap.

  For this reason, the bottom of the shallow recess 61 functions as a stopper that prevents the seating sensor 7 from moving above the cushion pad 8. Therefore, for example, even when the cushion pad 8 moves up and down due to vibration or the like, the seating sensor 7 and the cushion pad 8 come into contact with each other due to the vertical movement and the pressure sensitive switch SW1 is turned on. It can be avoided in advance.

  In the case of the present embodiment, the peripheral area AR (FIG. 3A) of the second insulating sheet 21 and the cushion pad 8 are bonded by an adhesive AD. For this reason, even when the opening of the shallow recess 61 is not closed, the seating sensor 7 can be held at a fixed position in the space SP1 of the shallow recess 61.

  By the way, since the hardness of the cushion pad 8 varies depending on the type of the vehicle type and the like, the degree of elastic deformation of the cushion pad 8 varies depending on the type of the cushion pad 8 due to the seating of the person. In the case of this embodiment, a cushion member 40 that covers the opening 31 </ b> A via the second insulating sheet 21 is provided on the surface of the second insulating sheet 21 opposite to the surface facing the spacer 30.

  For this reason, the cushion member 40 can be deformed in the same manner regardless of the hardness of the cushion pad, and the second insulating sheet 21 can enter the opening 31 </ b> A of the spacer 30. Therefore, even if there is a gap GP between the cushion member 40 and the cushion pad 8, the insulating sheet can be appropriately bent. Further, the sensitivity of the pressure sensitive switch SW1 can be adjusted by the thickness of the cushion member 40.

  Moreover, when the cushion pad 8 of this embodiment is mounted on the mounting surface of the mounting member, when a load is applied to the cushion pad 8, a pressing force is applied from both the seat surface side and the lower surface side of the cushion pad 8. receive. In this respect, the seating sensor 7 of this embodiment is housed in the spaces SP1 and SP2 of the shallow recess 61 and the deep recess 62, and the cushion pad 8 is placed on the lower side of the seating sensor 7 as a space. It becomes non-contact with respect to the mounting member.

  Accordingly, the pressure-sensitive switch SW1 of the seating sensor 7 is turned on by the pressing force from the seating surface side without being substantially affected by the pressing force on the lower surface side. In general, the shape of the cushion pad 8 on the seat surface side and the lower surface side is different, and due to this difference, the pressing force received from the seat surface side and the pressing force received from the lower surface side tend to be non-uniform. is there. In this respect, since the pressure sensitive switch SW1 of the present embodiment is turned on by the pressing force from the seating surface side, the pressing force received from the seating surface side and the pressing force received from the lower surface side were not uniform. However, it is almost unaffected. Therefore, the sensitivity of the pressure sensitive switch SW1 can be easily adjusted.

(Second Embodiment)
The second embodiment will be described in detail with reference to FIG. Note that, unless otherwise specified, the same or equivalent components as those in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted. FIG. 8 is a diagram illustrating the seat device 2 according to the second embodiment from the same viewpoint as in FIG.

  As shown in FIG. 8, the seat device 2 of the present embodiment is the first in that a deep recess 63 different from the deep recess 62 of the first embodiment is provided as a component, and the cushion member 40 is omitted. Different from the seat device 1 of the embodiment.

  Specifically, in the first embodiment, the deep recess 62 has a depth DP1 larger than the thickness TH1 of the cushion member 40, and there is a gap GP between the bottom surface of the deep recess 62 and the top surface of the cushion member 40 facing the bottom surface. In the state, the cushion member 40 is accommodated in the space SP <b> 2 of the deep recess 62.

  On the other hand, in this embodiment, since the cushion member 40 is omitted, the depth DP3 of the deep recess 63 is smaller than the depth DP2 ((B) of FIG. 5) of the deep recess 62 of the first embodiment. It is in. The space of the deep recess 63 is a gap GP between the bottom surface of the deep recess 63 and the upper surface of the cushion member 40 facing the bottom surface. That is, the deep recess 63 is formed to obtain a gap GP between the bottom surface of the deep recess 63 and the upper surface of the cushion member 40 facing the bottom surface.

  As described above, in the seat device 2 of the present embodiment, the second recess 62 is located in the space SP1 of the shallow recess 61 with the space of the deep recess 62 positioned as the gap GP above the opening 31A via the second insulating sheet 21. Two insulating sheets 21 are arranged.

  For this reason, similarly to the seat device 1 of the first embodiment, it is possible to reduce the pressure-sensitive switch SW1 from being turned on by the pressing force applied to the cushion pad 8 when a load lighter than a person is placed. it can. Similarly to the seat device 1 of the first embodiment, the pressure sensitive switch SW1 can be adjusted to be turned on when a person is seated depending on the size of the gap GP. As described above, the erroneous detection can be structurally reduced without depending on the fact that the erroneous detection is electrically determined.

  Further, in the seat device 2 of the present embodiment, as in the case of the first embodiment, the peripheral area AR ((A) of FIG. 3) on the opposite side to the surface of the second insulating sheet 21 that faces the spacer 30. The bottom surface of the shallow recess 61 is bonded to the adhesive AD.

  For this reason, the bottom of the shallow recess 61 functions as a stopper that prevents the seating sensor 7 from moving above the cushion pad 8, and even when the opening of the shallow recess 61 is not closed, the shallow recess 61. The seating sensor 7 can be held at a fixed position in the space SP1.

(Third embodiment)
The third embodiment will be described in detail with reference to FIG. Note that, unless otherwise specified, the same or equivalent components as those in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted. FIG. 9 is a diagram illustrating the seat device 3 according to the third embodiment from the same viewpoint as in FIG.

  As shown in FIG. 9, the seat device 3 according to the present embodiment includes a one-step recess 64 instead of the two-step recesses 61 and 62 in the first embodiment, and a space adjustment spacer 70. Is different from the seat device 1 according to the first embodiment in that it is newly provided as a component.

  The formation position and shape of the concave portion 64 are the same as the shallow concave portion 61 in the first embodiment, and the depth DP4 of the concave portion 64 is the same as the depth DP1 of the shallow concave portion 61 (FIG. 5B) in the first embodiment. The depth DP2 of the deep recessed portion 62 ((B) in FIG. 5) is the total depth. That is, this corresponds to a state in which the space SP1 of the shallow recess 61 in the first embodiment is enlarged to the bottom surface position of the deep recess 62.

  The space adjusting spacer 70 has a substantially rectangular parallelepiped shape and is hard and does not deform due to the pressing force from the cushion pad 8. The thickness of the space adjusting spacer 70 is larger than the thickness TH2 of the cushion member 40 (FIG. 5B), and the space adjusting spacer 70 has a through hole HL for accommodating the cushion member 40. It is formed.

  One wide surface of the space adjusting spacer 70 is fixed to the bottom surface of the concave portion 64 by the adhesive AD1, and the other wide surface is the peripheral area AR of the second insulating sheet 21 by the adhesive AD2 (FIG. 3A). Fixed to. Thus, the space adjusting spacer 70 changes the space SP4 of the concave portion 64 into the space SP1 (FIG. 5B) of the shallow concave portion 61 and the space SP2 of the deep concave portion 62 (FIG. 5B) in the first embodiment. It is formed as a corresponding space.

  As described above, in the seat device 3 of the present embodiment, the space adjustment spacer 70 has the through hole HL positioned above the opening 31A via the second insulating sheet 21, and the space SP4 of the recess 64 is Two insulating sheets 21 are arranged.

  Therefore, a space corresponding to the thickness of the space adjusting spacer 70 (a space corresponding to the space SP2 of the deep recess 62 ((B) in FIG. 5)) is formed above the opening 31A. Therefore, compared with the case where there is no space, it is possible to reduce erroneous detection such that the pressure sensitive switch SW1 is turned on by the pressing force applied to the cushion pad when a load lighter than a person is placed. Further, the pressure adjustment switch SW1 can be adjusted to be turned on when a person is seated depending on the thickness of the space adjusting spacer 70. As described above, the erroneous detection can be structurally reduced without depending on the fact that the erroneous detection is electrically determined.

  In the seat device 3 of the present embodiment, since the space adjusting spacer 70 is interposed between the second insulating sheet 21 and the bottom of the recess 64, the space adjusting spacer 70 is positioned above the cushion pad 8. It functions as a stopper that prevents 7 from moving. Therefore, similarly to the first embodiment, it is possible to avoid erroneous detection of the pressure sensitive switch SW1 due to vibration of the cushion pad 8 or the like.

  Further, in the seat device 3 of the present embodiment, the cushion member 40 that covers the opening 31 </ b> A via the second insulating sheet 21 is provided on the surface of the second insulating sheet 21 opposite to the surface facing the spacer 30. For this reason, as in the case of the first embodiment, the cushion member 40 can be deformed in the same manner regardless of the hardness of the cushion pad 8, and the second insulating sheet 21 can enter the opening 31 </ b> A of the spacer 30. it can.

  The cushion member 40 may be omitted. When the cushion member 40 is omitted, it is preferable to make the thickness of the space adjustment spacer 70 smaller than that in the third embodiment from the viewpoint of improving the sensitivity of the pressure sensitive switch SW1.

(Fourth embodiment)
The fourth embodiment will be described in detail with reference to FIG. Note that, unless otherwise specified, the same or equivalent components as those in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted. FIG. 10 is a diagram illustrating the seat device 4 according to the fourth embodiment from the same viewpoint as in FIG.

  As shown in FIG. 10, the seat device 4 of the present embodiment brings the peripheral region AR (FIG. 3A) of the second insulating sheet 21 into contact with the cushion pad 8 without bonding with the adhesive AD. This is different from the seat device 1 of the first embodiment in that the holding member 80 is newly provided as a constituent element.

  The holding member 80 is a member that holds and holds the sheet structure SSB and the reinforcing tape 50 accommodated in the space of the shallow recess 61 with a cushion pad portion that is a bottom surface portion of the shallow recess 61. The opening 61 is closed.

  The holding member 80 may be integrally formed as a part of the cushion pad 8, or may be connected to the cushion pad 8 as a member different from the cushion pad 8. Further, the outer surface of the holding member 80 and the lower surface of the seat portion 8B shown in FIG.

  As described above, in the seat device 4 of this embodiment, the holding member 80 sandwiches the seat structure SSB and the reinforcing tape 50 with the cushion pad 8. For this reason, the seating sensor 7 (seat structure SSB) is positioned at a fixed position in the space SP1 of the shallow recess 61 without adhering the peripheral region AR (FIG. 3A) of the second insulating sheet 21 and the cushion pad 8. And the reinforcing tape 50) can be held.

  By the way, when the peripheral area AR (FIG. 3A) of the second insulating sheet 21 and the cushion pad 8 are bonded, there is a possibility that the cushioning property of the cushion member 40 may be changed depending on the type of adhesive. Can occur. According to the seat device 4 of the present embodiment, the seating sensor 7 (the seat structure SSB and the reinforcing tape 50) can be held at a fixed position in the space SP1 of the shallow recess 61 while avoiding such a possibility. it can.

  Note that the holding member 80 of the present embodiment may be applied to the seat device 2 of the second embodiment or the seat device 3 of the third embodiment. When the holding member 80 is applied to the seat device 2 of the second embodiment or the seat device 3 of the third embodiment, the peripheral area AR ((A) of FIG. 3) of the second insulating sheet 21 and the cushion pad 8 The adhesive AD can be omitted.

(Fifth embodiment)
The fifth embodiment will be described in detail with reference to FIG. Note that, unless otherwise specified, the same or equivalent components as those in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted. FIG. 11 is a diagram illustrating the seat device 5 according to the fifth embodiment from the same viewpoint as in FIG.

  As shown in FIG. 11, the seat device 5 of the present embodiment brings the peripheral area AR (FIG. 3A) of the second insulating sheet 21 into contact with the cushion pad 8 without bonding with the adhesive AD. This is different from the seat device 1 of the first embodiment in that the holding member 90 is newly provided as a constituent element.

  The holding member 90 holds and holds the sheet structure SSB and the reinforcing tape 50 accommodated in the space SP1 of the shallow recess 61 with a cushion pad portion that is a bottom surface portion of the shallow recess 61. It consists of members 90A and 90B. The pair of members 90A and 90B has flexibility, protrudes from both side portions in the longitudinal direction of the shallow recess 61 toward the space SP1 of the shallow recess 61, and is pressure sensitive in the holding member 80 of the fourth embodiment. This corresponds to the part below the switch omitted.

  The pair of members 90 </ b> A and 90 </ b> B may be integrally formed as a part of the cushion pad 8 or may be connected to the cushion pad 8 as a member different from the cushion pad 8. Moreover, although the outer surface of a pair of member 90A, 90B shown in FIG. 11 and the lower surface of the seat part 8B are the same surfaces, it does not need to be the same surface.

  As described above, in the seat device 5 of the present embodiment, the holding member 90 sandwiches the seat structure SSB and the reinforcing tape 50 with the cushion pad 8. For this reason, as in the fourth embodiment, the peripheral region AR (FIG. 3A) of the second insulating sheet 21 and the cushion pad 8 are not bonded to each other at a fixed position in the space SP1 of the shallow recess 61. The seating sensor 7 (the sheet structure SSB and the reinforcing tape 50) can be held.

  Note that the holding member 90 of the present embodiment may be applied to the seat device 2 of the second embodiment or the seat device 3 of the third embodiment. When the holding member 80 is applied to the seat device 2 of the second embodiment or the seat device 3 of the third embodiment, the peripheral area AR ((A) of FIG. 3) of the second insulating sheet 21 and the cushion pad 8 The adhesive AD can be omitted.

(Sixth embodiment)
The sixth embodiment will be described in detail with reference to FIG. Note that, unless otherwise specified, the same or equivalent components as those in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted. FIG. 12 is a diagram illustrating the seat device 6 according to the sixth embodiment from the same viewpoint as in FIG.

  As shown in FIG. 12, the seat device 6 of the present embodiment is different from the seat device 1 of the first embodiment in that a second insulating sheet 101 having a structure different from that of the second insulating sheet 21 is provided as a constituent element.

  Specifically, in the first embodiment, the second insulating sheet 21 has the same size as the main block B1 (FIG. 2) of the first insulating sheet 11, and the peripheral area AR (FIG. 3) on one surface of the second insulating sheet. (A)) and the bottom surface of the shallow concave portion 61 were attached with an adhesive AD ((B) of FIG. 5).

  On the other hand, in the present embodiment, the second insulating sheet 101 is smaller than the main block B1 (FIG. 2) of the first insulating sheet 11 and has the same size as the outer shape of the cushion member 40. That is, the 2nd insulating sheet 101 is corresponded to the site | part from which the peripheral area | region AR ((A) of FIG. 3) in the 2nd insulating sheet 21 of 1st Embodiment was abbreviate | omitted. Therefore, as shown in FIG. 12, the peripheral region of one surface of the spacer 30 facing the second insulating sheet 101 is exposed from the second insulating sheet 101, and the exposed portion and the bottom surface of the shallow recess 61 are separated from each other. Affixed with adhesive AD.

  As described above, in the seat device 6 of the present embodiment, the peripheral region of the spacer 30 is exposed from the second insulating sheet 101, and the exposed region is bonded to the cushion pad portion that becomes the bottom surface of the shallow recess 61. .

  For this reason, even if the bonding between the second insulating sheet 101 and the spacer 30 is omitted, the second insulating sheet 101 and the spacer 30 can be arranged at fixed positions, so that the cost of the adhesive can be suppressed.

  In the present embodiment, the peripheral region of the spacer 30 is exposed from the second insulating sheet 101 by making the second insulating sheet 101 smaller than the first insulating sheet 11. However, for example, by providing one or a plurality of through holes in the peripheral area AR ((A) of FIG. 3) of the second insulating sheet 21 of the first embodiment, the area other than the peripheral edge of the spacer 30 is the second insulating sheet. 101 may be exposed. In short, it is sufficient that a part of the spacer 30 is exposed from the second insulating sheet.

  Thus, the form which exposes a part of spacer 30 from a 2nd insulating sheet, and adhere | attaches the exposed part and the cushion pad 8 is applicable to any of 1st Embodiment-5th Embodiment.

  As mentioned above, although 1st Embodiment-6th Embodiment was demonstrated to this invention as an example, this invention is not limited to these embodiment.

  For example, in the above-described embodiment, the second insulating sheet 21 is bonded or fixed to the bottom of the first recess 61 or the space adjusting spacer 70. However, at least a part of the peripheral area AR (FIG. 3A) and the like of the second insulating sheet 21 may be bonded or clamped to the lower surface of the cushion pad 8 other than the recesses 61 to 64. The seating sensor 7 may be fixed by other methods. For example, the seating sensor 7 may be fixed to the bottom of the first recess 61 or the space adjusting spacer 70 with a plurality of pins or the like that penetrate the periphery of each pressure-sensitive switch and are pierced by the cushion pad 8.

  In the above embodiment, the reinforcing tape 50 may be replaced with a reinforcing member other than the tape. Moreover, although the reinforcement tape 50 was affixed on the whole surface of the 1st insulating sheet 11, it may be affixed on one part area | region and may be abbreviate | omitted. However, when the lower side of the first insulating sheet 11 is a space, it is desirable that a reinforcing member is provided from the viewpoint of improving the durability of the seating sensor 7.

  In the said embodiment, the shape of the seating sensor 7, the 1st electrode sheet 10, the 2nd electrode sheet 20, and the spacer 30 is not limited to the said embodiment, Various shapes can be applied. Moreover, although the electrode of the 1st electrode sheet 10 and the 2nd electrode sheet 20 and the opening of the spacer 30 were made into circular shape, it can also be set as shapes other than the said circular shape.

  Moreover, in the said embodiment, although the number of pressure sensitive switches was four, three or less may be sufficient and five or more may be sufficient.

  In the above embodiment, the set STA of the pressure sensitive switch SW1 and the pressure sensitive switch SW2 and the set STB of the pressure sensitive switch SW3 and the pressure sensitive switch SW4 are connected in parallel, and the sets STA and STB are connected in series. Connected to. However, all of the pressure sensitive switches SW1 to SW4 may be connected in series or in parallel.

  Moreover, in the said embodiment, the shape and magnitude | size of 1st electrode 12A-12D and 2nd electrode 22A-22D corresponded, and it was supposed that it mutually overlapped completely. However, as long as the pressing force can be detected, the size, shape, and the like may differ between the first electrodes 12A to 12D and the second electrodes 22A to 22D, and may not completely overlap each other.

  Moreover, in the said embodiment, although the magnitude | size of opening 31A-31D of pressure sensitive switch SW1-SW4 was made the same, you may be made into the opening which has a 2 or more types of magnitude | size. In this case, the insulating sheet of the pressure sensitive switch having a large opening is more flexible than the insulating sheet of the pressure sensitive switch having a small opening, and the sensitivity of the pressure sensitive switch having the large opening is a pressure sensitive having a small opening. Improved compared to the switch. In general, the pressing force applied to the cushion pad 8 when a person is seated tends to decrease as the distance from the center of the cushion pad 8 in the width direction increases. Therefore, for example, the opening of the pressure sensitive switches SW1 and SW4 arranged farther from the center of the cushion pad 8 than the pressure sensitive switches SW2 and SW3 is compared with the opening of the pressure sensitive switches SW2 and SW3. If the state is large, variations in sensitivity of the pressure sensitive switches SW1 to SW4 can be suppressed.

  Moreover, in the said embodiment, the cushion member 40 which covers the opening 31A-31D in the spacer 30 collectively through the insulating sheet 21 or 101 was applied. However, a cushion member that individually covers each of the openings 31A to 31D may be applied. Moreover, although the cushion member 40 which covers the whole opening was applied, as shown, for example in FIG. 13, the cushion member 41 which covers a part of opening 31A-31D may be applied. Or although not shown in figure, the cushion member which covers a part of opening 31A and 31D and covers the whole other opening 31B and 31D may be applied. In short, it may be a cushion member that covers at least a part of the pressure sensitive switches SW1 to SW4 (more specifically, the openings 31A to 31D via the insulating sheet 21 or 101). In addition, as described above, when an opening having two or more types of sizes is applied, the ratio of the cushion member covering the opening (the closing amount of the cushion member with respect to the opening) is different for each different type of opening. The sensitivity of the pressure sensitive switches SW1 to SW4 can be adjusted. For example, either one of the pressure-sensitive switch having the larger opening and the pressure-sensitive switch having the smaller opening is covered with a cushion member, and a part of the other opening is covered with the cushion member. In this way, even if there is a difference in the pressing force applied from the cushion pad 8 to the pressure sensitive switches SW1 to SW4, the uniformity (balance) at which these pressure sensitive switches SW1 to SW4 are turned on can be improved.

  Moreover, in the said embodiment, the sheet-like space adjustment spacer 70 which has at least 1 through-hole HL was applied. However, the structure of the space adjusting spacer 70 is not limited to the above embodiment. For example, a pair of space adjusting spacers that are rod-shaped can be applied. When these space adjustment spacers are applied, each space adjustment spacer is fixed with the adhesive AD2 in the longitudinal direction of the peripheral area AR (FIG. 3) of the second insulating sheet 21, and the bottom of the shallow recess 61 with the adhesive AD1. Fix it. If fixed in this way, the gap GP can be obtained between the bottom of the shallow recess 61 and the pressure sensitive switch SW1 by the space adjusting spacer, as in the third embodiment. As another example, two or more space adjusting spacers having a frustum shape can be applied. When applying these space adjustment spacers, the bottom surface of each space adjustment spacer or the plane directly opposite thereto is fixed to the peripheral area AR (FIG. 3) of the second insulating sheet 21 with an adhesive AD2 at predetermined intervals. The flat surface or the bottom surface is fixed to the bottom of the shallow recess 61 with the adhesive AD1. If fixed in this way, the gap GP can be obtained between the bottom of the shallow recess 61 and the pressure sensitive switch SW1 by the space adjusting spacer, as in the third embodiment.

  The seat device according to the present invention includes a seating sensor having a cushion pad and at least one pressure-sensitive switch for detecting a load applied from the seating surface of the cushion pad, and the pressure-sensitive switch is provided on a lower surface of the cushion pad. The seating sensor is disposed below the bottom of the recess, and a gap is formed between the seating sensor and the bottom part of the recess that is above the pressure-sensitive switch. As long as the seating sensor is directly or indirectly fixed to at least a part of the lower surface of the cushion pad other than the bottom portion of the recess that is above, the components of the seat device are appropriately combined in addition to those described above be able to.

  The present invention is applicable to a seat of a vehicle such as a vehicle, and is particularly applicable to a seat to which a seat belt is to be worn.

DESCRIPTION OF SYMBOLS 1-6 ... Seat apparatus 7 ... Seating sensor 8 ... Cushion pad 8A ... Backrest part 8B ... Seat part 10 ... 1st electrode sheet 11 ... 1st insulating sheet 12A- 12D ... 1st electrode 13A, 13B ... Terminal 14A-14D ... Wiring 20 ... 2nd electrode sheet 21, 101 ... 2nd insulation sheet 22A-22D ... 2nd electrode 24A- 24C ... 2nd wiring 30 ... Spacer 31A-31D ... Opening 32A-32D ... Slit 40, 41 ... Cushion member 50 ... Reinforcement tape 61 ... Shallow recess 62, 63 ··· Deep recess 64 ·························· Space adjustment spacer 80, 90 ··· Holding member GP ··· Gap HP ··· Hip point SP1 to SP4 ··· Space SSB ··· Seat structure SW1 〜SW4 ・ ・ ・ Pressure sensitive switch

Claims (9)

A seat device comprising a seating sensor having a cushion pad and at least one pressure-sensitive switch for detecting a load applied from a seating surface of the cushion pad,
On the lower surface of the cushion pad, a recess is formed at a position including the upper side of the pressure sensitive switch,
The seating sensor is disposed below the bottom of the recess,
A gap is formed between the bottom portion of the concave portion above the pressure sensitive switch and the seating sensor,
The seating sensor is fixed directly or indirectly to at least a part of the lower surface of the cushion pad other than the bottom part of the recess that is above the pressure-sensitive switch, and a space is formed below the seating sensor. A seat device characterized by that. The seating sensors, seating apparatus according to claim 1, characterized in that it is housed in the space of the front Ki凹 portion. The recess comprises a first recess formed on the lower surface of the cushion pad and a second recess formed on a part of the bottom of the first recess,
The pressure sensitive switch is disposed with a gap from the bottom of the second recess,
The seating device according to claim 1 or 2 , wherein the seating sensor is fixed directly or indirectly to at least a part of a bottom of the first recess. A space adjusting spacer that is adhered to at least a portion other than the bottom portion of the concave portion above the pressure sensitive switch;
The seating sensor is
The seat device according to claim 1 , wherein the seat device is fixed directly or indirectly to at least a part of the space adjusting spacer. The seat device according to any one of claims 1 to 4, wherein the fixing is fixing by an adhesive. The pressure sensitive switch is
Between the first insulating sheet and the second insulating sheet, the second insulating sheet having flexibility and being disposed closer to the seating surface side of the cushion pad than the first insulating sheet A pair of sheet-like spacers that are interposed between the first insulating sheet and the second insulating sheet and that face each other through the openings. An electrode,
At least a part of the surface of the spacer that faces the second insulating sheet is exposed from the second insulating sheet, and the exposed part is at least a part other than the bottom part of the recess that is above the pressure sensitive switch. The seat device according to claim 5, wherein the seat device is fixed with an adhesive. The seating sensor is
The seat device according to any one of claims 1 to 6 , further comprising a cushion member that covers at least a part of the pressure-sensitive switch on a seating surface side of the cushion pad. The pressure sensitive switch is
Between the first insulating sheet and the second insulating sheet, the second insulating sheet having flexibility and being disposed closer to the seating surface side of the cushion pad than the first insulating sheet A pair of sheet-like spacers that are interposed between the first insulating sheet and the second insulating sheet and that face each other through the openings. An electrode,
The seat device according to any one of claims 1 to 7, wherein the first insulating sheet is harder than the second insulating sheet. The seating sensor is
Seat device according to any one of claims 1 to claim 8, wherein the further Yusuke Rukoto a reinforcing member provided on at least part of the lower surface of the seating sensor.

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