JP5844209B2 - 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.

  In the seat device of Patent Document 1, a slit having a thickness larger than the thickness of the sensor is formed in the seat cushion, and the sensor is inserted into the slit by a jig and fixed. In this sensor, an upper film and a lower film are integrated with an insulating spacer interposed therebetween, and a plurality of pairs of electrodes arranged on each film are in contact with each other when a load is applied.

  Such a seat device can fix the sensor in the slit without requiring a process such as peeling off the release paper, so that it is easier to assemble the sensor to the seat cushion as compared with the case of using a double-sided tape. 1 is described.

JP-A-2005-152426

  However, in the seat device of Patent Document 1, the upper surface of the slit and the upper surface of the sensor are in contact with each other due to the weight of the seat cushion even when no load is received from the seat cushion.

  In such a state, there is a problem that even when the seat cushion is not seated, the sensor is turned on, and the seating sensor tends to malfunction.

  Then, an object of this invention is to provide the seat apparatus which can reduce a misdetection more.

  In order to solve such a problem, the present invention is provided on a cushion pad having a slit formed from a side surface of the seat portion to the inside of the seat portion, a seating sensor having a pressure-sensitive switch, and a peripheral edge of the pressure-sensitive switch. A frame member, and the frame member is provided at a position opposite to each other across at least the pressure sensitive switch at an upper peripheral edge of the pressure sensitive switch, and has an upper end on the seat surface side of the seat portion from the upper surface of the seating sensor. The seating sensor and the frame member are accommodated in the slit.

  In such a seat device, the frame member functions as a member that supports the cushion pad portion on the upper side of the slit. For this reason, it is possible to prevent the pressure-sensitive switch from being pressed against the seat of the cushion pad in a state where no load is received or a load lighter than a person is placed. In this way, it is possible to provide a seat device that can further reduce erroneous detection.

  Moreover, the said frame member is provided in the peripheral periphery of the area | region which has the said pressure sensitive switch.

  When such a frame member is employed, the frame member is more stable as a member that supports the cushion pad portion on the upper side of the slit than the frame member that does not surround the entire circumference of the peripheral edge on the upper side of the pressure sensitive switch. Can be improved. Further, such a frame member functions as a member that guides the cushion pad portion from four directions to the pressure-sensitive switch when a load is applied to the seat portion of the cushion pad and the cushion pad portion on the upper side of the slit bends. For this reason, it can suppress that a cushion pad part presses against a pressure-sensitive switch, and can turn on the said pressure-sensitive switch appropriately.

  Moreover, it is preferable that at least a part of the frame member is provided on the upper surface of the seating sensor.

  When such a frame member is employed, the distance between the frame member and the pressure-sensitive switch when viewed in plan from the upper surface side of the seating sensor, compared to the case where the frame member is not provided on the upper surface of the seating sensor. Can be close. In other words, the distance between the frame members provided in the mutually facing portions can be shortened, and the pressure sensitive switch is pressed against the seat of the cushion pad in a state where no load is received or a load lighter than a person is placed. Can be prevented more. In addition, since the frame member is securely disposed between the seating sensor and the cushion pad, the frame member is compared with the case where the frame member is not provided on the upper surface of the seating sensor, and the pressure sensitive switch. The relative position of can be prevented from shifting. As a result, the pressure sensitive switch can be more reliably prevented from being pressed against the cushion pad seat.

  The frame member is preferably fixed to the upper surface of the seating sensor.

  For example, when the frame member is fixed only to the cushion pad portion on the upper side of the slit, there is a possibility that the position of the seating sensor is shifted in the slit. In this regard, when the frame member is fixed to the upper surface of the seating sensor, it is possible to prevent relative displacement between the seating sensor and the frame member.

  Further, the frame member is provided at a portion facing each other across at least the pressure-sensitive switch at a lower peripheral edge of the pressure-sensitive switch, and a lower end is positioned on the lower surface side of the seat portion with respect to the lower surface of the seating sensor. It is preferable to further have a lower frame member.

  In this case, the upper frame member functions as a member that supports the cushion pad portion that is the upper side of the slit, and the lower frame member functions as a member that supports the cushion pad portion that is the lower side of the slit. For this reason, it is possible to further prevent the pressure-sensitive switch from being pressed from the cushion pad portion below the slit in a state where no load is received or a load lighter than a person is placed.

  Moreover, it is preferable that a reinforcing member having rigidity higher than that of the cushion pad is provided at a lower portion of the pressure sensitive switch.

  When such a reinforcing member is provided, it can be suppressed by the reinforcing member that the pressure sensitive switch is pressed from the cushion pad portion below the slit. For this reason, the contact pressure of the pressure-sensitive switch can be adjusted only by the pressing force from the cushion pad portion that is generally above the slit, and the sensitivity of the pressure-sensitive switch can be further improved.

  Moreover, it is preferable that the said frame member is provided to the side of the said pressure sensitive switch, and is connected with the said reinforcement member.

  In this case, not only can the decrease in the durability of the pressure-sensitive switch described above be reduced, but also the strength of the frame member itself can be increased.

  Moreover, it is preferable that the upper end of the said frame member is fixed to the cushion pad part which becomes the upper side of the said slit.

  In this case, since the cushion pad and the seating sensor are connected through the frame member, even if there is a large dimensional difference between the seating sensor and the slit in which the seating sensor is accommodated, Misalignment can be reliably prevented.

  As described above, according to the present invention, it is possible to realize a seat device that can further reduce erroneous detection.

It is a perspective view showing roughly the seat device in a 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 perspective view which shows the mode of arrangement | positioning of a frame member. 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 figure which shows a mode that a pressure sensitive switch turns on from the same viewpoint as (B) of FIG. It is a perspective view which shows the mode of arrangement | positioning of the frame member in 2nd Embodiment from the same viewpoint as FIG. It is a figure which shows the mode of the cross section of the seat apparatus in 2nd Embodiment from the same viewpoint as (B) of FIG. It is a perspective view which shows the mode of arrangement | positioning of the frame member in 3rd Embodiment from the same viewpoint as FIG. It is a perspective view which shows the mode of arrangement | positioning of the frame member in 4th Embodiment from the same viewpoint as FIG. It is a figure which shows a mode that the pressure-sensitive switch in 4th Embodiment turns on from the same viewpoint as (B) of FIG. It is a perspective view which shows the mode of arrangement | positioning of the frame member in 5th Embodiment from the same viewpoint as FIG. It is a perspective view which shows the mode of arrangement | positioning of the frame member in 6th Embodiment from the same viewpoint as FIG. It is a perspective view which shows the mode of arrangement | positioning of the frame member in 7th Embodiment from the same viewpoint as FIG. It is a perspective view which shows the mode of arrangement | positioning of the frame member in 8th Embodiment from the same viewpoint as FIG. It is a figure which shows a mode that the pressure-sensitive switch in 8th Embodiment turns on from the same viewpoint as (B) of FIG.

(1) 1st Embodiment 1st Embodiment suitable for the seat apparatus which concerns on this invention is described in detail, using drawing.

  FIG. 1 is a perspective view schematically showing a seat device 1 according to the first embodiment. As shown in FIG. 1, the seat apparatus 1 in 1st Embodiment is provided with the cushion pad 2 and the seating sensor 3 as main components.

  The cushion pad 2 has a seat part 2A and a backrest part 2B, and is connected by a predetermined connector. The seat portion 2A and the backrest portion 2B are elastic members that deform so as to be crushed when pressure is applied. In addition, examples of the material of the elastic member include urethane foam.

  A slit 2 </ b> C is formed in the seat portion 2 </ b> A of such a cushion pad 2. In the case of the present embodiment, the slit 2C is formed from the side surface of the seat portion 2A toward the inside of the seat portion 2A. In the case of this embodiment, it is formed in parallel with the horizontal plane (the lower surface of the seat portion 2A) from the lower region of the left side surface of the seat portion 2A to the seat portion central region serving as the detection region. The slit has a substantially rectangular parallelepiped shape, for example.

  FIG. 2 is a perspective view showing a configuration of the seating sensor 3. As shown in FIG. 2, the seating sensor 3 includes a first electrode sheet 10, a second electrode sheet 20, and a spacer 30 as main components.

  The first electrode sheet 10 includes a first insulating sheet 11, a plurality of first electrodes 12A and 12B, and a pair of terminals 13A and 13B.

  The first insulating sheet 11 is a flexible film-like insulating sheet, and a first main block B1 and B2 in which the first electrodes 12A and 12B are to be disposed, and the main blocks B1 and B2 are connected to each other. It consists of a sub-block B3 and a second sub-block B4 where the terminal 13 is to be placed. The main blocks B1 and B2 are, for example, substantially circular blocks. On the other hand, the first sub-block B3 is a substantially rectangular block whose width is smaller than the diameter of the main blocks B1 and B2, for example. On the other hand, the second sub-block B4 is smaller than the first sub-block B3 and is a substantially rectangular block protruding from one end in the longitudinal direction of the first sub-block B3. Examples of the material of the first insulating sheet 11 include resins such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and polyethylene naphthalate (PEN).

  The first electrodes 12A and 12B are, for example, substantially circular metal layers, and are disposed on one surface of each main block B1 and B2. In the case of this embodiment, the first electrodes 12A and 12B are arranged in the same straight line.

  The terminals 13A and 13B are, for example, substantially rectangular metal layers, and are disposed on the same surface of the second sub-block B3 as the surface on which the first electrodes 12A and 12B are disposed.

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

  The second electrode sheet 20 includes a second insulating sheet 21 and a plurality of second electrodes 22A and 22B.

  The second insulating sheet 21 is a flexible film-like insulating sheet, and a pair of main blocks B11 and B12 in which the second electrodes 22A and 22B are to be disposed, and the first blocks that connect the main blocks B11 and B12 to each other. It consists of sub-block B13. In the present embodiment, the main blocks B11 and B12 have the same shape and size as the main blocks B1 and B2 in the first insulating sheet 11, and the first subblock B13 has the same size as the first subblock B3 in the first insulating sheet 11. It is said to be the same size. As the material of the second insulating sheet 21, like the first insulating sheet 11, a resin such as PET, PBT, or PEN can be used. However, the material of the second insulating sheet 21 may be the same as or different from the material of the first insulating sheet 11.

  The second electrodes 22A and 22B are, for example, substantially circular metal layers, and are disposed on one surface of each main block B11 and B12. In the present embodiment, the size of the second electrodes 22A and 22B is the same as that of the first electrodes 12A and 12B, and the arrangement position of the second electrodes 22A and 22B is the arrangement of the first electrodes 12A and 12B with respect to the main block B1. The position is the same as the position.

  The second electrode 22A and the second electrode 22B are electrically connected by the second wiring 24A.

  The spacer 30 is a film-like insulating sheet and includes a pair of main blocks B21 and B22 and a first sub-block B23 that connects the main blocks B21 and B22. In the present embodiment, the main blocks B21 and B22 have the same shape and size as the main blocks B1 and B2 in the first insulating sheet 11, and the first subblock B23 has the same size as the first subblock B3 in the first insulating sheet 11. It is said to be the same size.

  Examples of the material of the spacer 30 include resins such as PET, PBT, and PEN, as in the first insulating sheet 11 and the second insulating sheet 21. However, the material of the spacer 30 may be the same as or different from the material of the first insulating sheet 11 or the second insulating sheet 21.

  Openings 31A and 31B are formed in each main block B21. The peripheral shapes of the openings 31A and 31B are, for example, substantially circular, and the diameters of the openings 31A and 31B are slightly smaller than the diameters of the first electrodes 12A and 12B. Further, the arrangement positions of the openings 31A and 31B are relatively the same positions as the arrangement positions of the first electrodes 12A and 12B with respect to the main block B1.

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

  The first electrode sheet 10 is attached to one surface of the spacer 30 and the second electrode sheet 20 is attached to the other surface of the spacer 30 to constitute the seating sensor 3.

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

  As shown in FIG. 3B, the seating sensor 3 is connected to a part of a pair of insulating sheets 11 and 21, a spacer part interposed between the sheet parts, and an opening 31A provided in the spacer part. A pressure sensitive switch SW1 including a pair of electrodes 12A and 22A facing each other is provided. A part of the insulating sheets 11 and 21 is a portion where at least a pair of electrodes 12A and 22A is disposed.

  The seating sensor 3 has a pressure sensitive switch SW2 shown in FIG. 3A in the same manner as the pressure sensitive switch SW1.

  FIG. 4 is a diagram showing an equivalent circuit of the seating sensor 3. As shown in FIG. 4, the pressure sensitive switches SW1 and SW2 in the seating sensor 3 are connected in series and are disposed between a pair of terminals 13A and 13B.

  By the way, the seat apparatus 1 of this embodiment is provided with a frame member as a component in addition to the cushion pad 2 and the seating sensor 3 described above.

  FIG. 5 is a perspective view showing the arrangement of the frame members. As shown in FIG. 5, the frame member 40 is a member provided on the peripheral edge of the pressure-sensitive switch SW <b> 1, and includes an upper frame member 41 in the present embodiment.

  The upper frame member 41 is a member that surrounds the entire periphery of the region AR having the pressure-sensitive switch SW1 on the upper surface of the seating sensor 3, and is fixed to the peripheral portion of the region AR with, for example, an adhesive. . In the present embodiment, the upper surface of the seating sensor 3 is the surface opposite to the surface facing the spacer 30 in the second insulating sheet 21.

  The shape of the upper frame member 41 is, for example, a tubular shape, and the rigidity of the upper frame member 41 is greater than the rigidity of the cushion pad 2. The material of the upper frame member 41 can be a resin such as PET, PBT, or PEN, as in the first insulating sheet 11, and can be a metal.

  In FIG. 5, only the upper frame member 41 that surrounds the entire periphery of the area AR having the pressure sensitive switch SW1 is shown, but the pressure sensitive switch SW2 is also the area of the area having the pressure sensitive switch SW2. The upper frame member 41 that surrounds the entire periphery is fixed to the periphery of the area AR.

  FIG. 6 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. 6A is a view showing the seat device 1 as viewed from above, and FIG. 6B is a cross-sectional view taken along line YY in FIG. It is a figure which shows a mode.

  As shown in FIG. 6A, the seating sensor 3 is accommodated in a slit 2C formed in the cushion pad 2, and the pressure sensitive switches SW1 and SW2 in the seating sensor 3 are in the width direction of the cushion pad 2. They are arranged symmetrically with respect to a vertical plane VF passing through the center.

  Further, the pressure sensitive switches SW1 and SW2 are arranged in front of the hip point HP of the person who normally sits on the cushion pad 2. “Regular seating” means sitting with the back in contact with the backrest 2B and the buttocks located deep in the seat 2A. “Hip point” means the hips of a person in the sitting state. It means the part that appears on the lowermost side.

  In FIG. 6A, the side surface of the seating sensor 3 corresponding to the front-rear direction of the seat portion 2A and the front-rear side surface of the slit 2C are in contact with each other, but have a gap. May be. However, from the viewpoint of preventing the displacement of the seating sensor 3 in the front-rear direction in the slit 2C, it is preferable to be in a contact state.

  Further, although not shown in FIG. 6A, a lid member for closing the opening of the slit 2C may be provided. However, from the viewpoint of preventing the displacement of the seating sensor 3 in the left-right direction in the slit 2C, the side surface of the seating sensor 3 corresponding to the left-right direction of the seat portion 2A, the right side surface of the slit 2C, and the inner surface of the lid member Is preferably in a contact state.

  As shown in FIG. 6B, the upper end of the upper frame member 41 is fixed to a cushion pad portion on the upper side of the slit 2C by, for example, an adhesive, and is fixed to the seat 2A rather than the upper surface of the seating sensor 3. Located on the seat side. The space SP surrounded by the upper frame member 41 is located above the pressure sensitive switch SW1 and is a gap between the pressure sensitive switch SW1 and the cushion pad portion on the upper side of the slit 2C.

  In the present embodiment, the height H1 of the slit 2C is approximately the same as the sum of the height H2 of the seating sensor 3 and the height H3 of the upper frame member 41. Note that the height H1 of the slit 2C when the seating sensor 3 is not accommodated in the slit 2C may be zero.

  FIG. 7 is a diagram illustrating a state in which the pressure-sensitive switch SW1 is turned on from the same viewpoint as that in FIG. 6B. As shown in FIG. 7, when a person sits on the cushion pad 2 of the seat device 1 in the present embodiment, pressure is applied to the seat portion 2A of the cushion pad 2 from both the seat surface side and the lower surface side (arrows). reference).

  In the seat portion 2A to which such pressure is applied, the cushion pad portion that is the upper side of the slit 2C and the cushion pad portion that is the lower side of the slit 2C are deformed so as to be bent. Then, the cushion pad portion on the upper side of the slit 2C enters the space SP surrounded by the upper frame member 41 and presses the second insulating sheet 21 on the upper side in the seating sensor 3 downward. On the other hand, the cushion pad portion on the lower side of the slit 2C presses the lower first insulating sheet 11 in the seating sensor 3 upward.

  Since the first insulating sheet 11 and the second insulating sheet 21 have flexibility, the first insulating sheet 11 and the second insulating sheet 21 bend so as to enter the opening 31 </ b> A of the spacer 30 according to the pressing of the cushion pad portion. 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.

  In the case of the present embodiment, a slit 32A (FIG. 2) that connects the opening to the outside is formed in the opening 31A of the spacer 30 sandwiched between the first electrode 12A and the second electrode 22A. 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.

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

  In the above embodiment, as shown in FIG. 1, the seating sensor 3 is accommodated in the slit 2 </ b> C formed in the seat portion 2 </ b> A of the cushion pad 2. As shown in FIG. 5, an upper frame member 41 is provided on the upper surface of the seating sensor 3 so as to surround the entire periphery of the region AR having the pressure sensitive switch SW1. Further, as shown in FIG. 6B, the upper end of the upper frame member 41 is positioned closer to the seat surface side of the seat portion 2 </ b> A than the upper surface of the seat sensor 3.

  In such a seat device 1, the upper frame member 41 functions as a member that supports the cushion pad portion on the upper side of the slit 2 </ b> C. For this reason, it is possible to prevent the pressure-sensitive switch SW1 from being pressed by the seat portion 2A in a state where no load is received or a load lighter than a person is placed. In this way, the seat apparatus 1 that can further reduce false detection can be provided.

  In addition to this, the upper frame member 41 surrounds the entire periphery of the region AR having the pressure sensitive switch SW1, and therefore is a cushion on the upper side of the slit 2C as compared with a case where the frame member does not surround the entire periphery. Stability as a member for supporting the pad portion can be improved. The upper frame member 41 functions as a member that guides the cushion pad portion from four directions to the pressure sensitive switch SW1 when a load is applied to the seat portion 2A and the cushion pad portion on the upper side of the slit 2C is bent. To do. For this reason, it is possible to suppress the cushion pad portion from being biased and pressed against the pressure sensitive switch SW1, and to turn on the pressure sensitive switch SW1 appropriately.

  In the case of this embodiment, the upper frame member 41 is provided on the upper surface of the seating sensor 3 as shown in FIG.

  For this reason, compared with the case where it is not provided on the upper surface of the seating sensor 3, the distance between the upper frame member 41 and the pressure sensitive switch SW1 when viewed from the upper surface side of the seating sensor 3 can be reduced. That is, the distance between the opposing portions of the upper frame member 41 can be shortened, and the pressure is applied to the cushion pad portion on the upper side of the slit 2C in a state where no load is applied or a load lighter than a person is placed. It is possible to further prevent the switch SW1 from being pressed. In addition to this, the upper frame member 41 is surely positioned between the seating sensor 3 and the cushion pad 2, and the upper frame member 41 is higher than the case where the upper frame member 41 is not provided on the upper surface of the seating sensor 3. A relative positional shift between the frame member 41 and the pressure sensitive switch SW1 can be suppressed.

  In the case of this embodiment, as shown in FIG. 6B, the upper frame member 41 is fixed to the peripheral portion of the region AR having the pressure sensitive switch SW1 on the upper surface of the seating sensor 3 with an adhesive or the like. .

  For example, when the upper frame member 41 is fixed only to the cushion pad portion on the upper side of the slit, there is a possibility that the upper frame member 41 is positioned on the pressure sensitive switch SW1 due to the displacement of the seating sensor 3 in the slit. Can occur. In this regard, when the upper frame member 41 is fixed to the peripheral portion of the region AR having the pressure sensitive switch SW1 on the upper surface of the seating sensor 3, the seating sensor 3 and the upper side are secured while ensuring a region where the pressure sensitive switch SW1 can be pressed. A relative displacement with respect to the frame member 41 can be prevented.

  In the case of the present embodiment, the upper end of the upper frame member 41 fixed to a part of the upper surface of the seating sensor 3 is fixed to the cushion pad portion on the upper side of the slit 2C.

  For this reason, since the cushion pad 2 and the seating sensor 3 are connected through the upper frame member 41, even if there is a large dimensional difference between the seating sensor 3 and the slit 2C in which the seating sensor 3 is accommodated, Therefore, the displacement of the seating sensor 3 can be reliably prevented.

(2) 2nd Embodiment Next, 2nd Embodiment suitable for the seat apparatus which concerns on this invention is described in detail, using drawing. However, among the constituent elements of the seat device in the second embodiment, constituent elements that are the same as or equivalent to those in the first embodiment are assigned the same reference numerals, and redundant descriptions are omitted as appropriate.

  FIG. 8 is a perspective view showing the arrangement of the frame members in the second embodiment from the same viewpoint as FIG. As shown in FIG. 8, in this embodiment, the frame member 40 of a seat apparatus differs from the seat apparatus of 1st Embodiment by the point provided with the lower frame member 42 as a new component.

  The lower frame member 42 is a member that surrounds the entire periphery of the region having the pressure-sensitive switch SW1 on the lower surface of the seating sensor 3, and is fixed to the periphery of the region with an adhesive, for example.

  The shape and rigidity of the lower frame member 42 may be the same as or different from those of the upper frame member 41.

  FIG. 9 is a diagram illustrating a cross-sectional state of the seat device in the second embodiment from the same viewpoint as that in FIG. As shown in FIG. 9, the upper end of the upper frame member 41 is fixed to a cushion pad portion on the upper side of the slit 2 </ b> C by, for example, an adhesive, and is fixed to the seat surface side of the seat portion 2 </ b> A with respect to the upper surface of the seat sensor 3. Located in. A space SP1 surrounded by the upper frame member 41 is located above the pressure sensitive switch SW1 and becomes a gap between the pressure sensitive switch SW1 and a cushion pad portion on the upper side of the slit 2C.

  On the other hand, the lower end of the lower frame member 42 is fixed to a cushion pad portion on the lower side of the slit 2C by, for example, an adhesive, and is positioned on the lower surface side of the seat portion 2A from the lower surface of the seating sensor 3. A space SP2 surrounded by the lower frame member 42 is located below the pressure sensitive switch SW1 and becomes a gap between the pressure sensitive switch SW1 and a cushion pad portion below the slit 2C.

  According to the above embodiment, the upper frame member 41 functions as a member that supports the cushion pad portion that is the upper side of the slit 2C, and the lower frame member 42 supports the cushion pad portion that is the lower side of the slit. It functions as a member. For this reason, it is possible to further prevent the pressure-sensitive switch SW1 from being pressed against the seat portion 2A in a state where no load is received or a load lighter than a person is placed.

(3) Third Embodiment Next, a third embodiment suitable for the seat device according to the present invention will be described in detail with reference to the drawings. However, among the constituent elements of the seat device in the third embodiment, constituent elements that are the same as or equivalent to those in the above-described embodiment are given the same reference numerals, and redundant descriptions are omitted as appropriate.

  FIG. 10 is a perspective view showing the arrangement of the frame members in the third embodiment from the same viewpoint as FIG. As shown in FIG. 10, in this embodiment, the frame member 40 of a seat apparatus differs from the seat apparatus of 1st Embodiment by the point provided with the side frame member 43 as a new component.

  The side frame member 43 is a member surrounding the entire circumference of the side of the pressure sensitive switch SW1, and is connected to the upper frame member 41 by integral molding.

  The shape of the side frame member 43 is, for example, a tubular shape, and the rigidity of the side frame member 43 is greater than the rigidity of the cushion pad 2. The material of the side frame member 43 can be the same as that of the upper frame member 41. The upper frame member 41 and the side frame member 43 are not limited to being connected by integral molding, and may be connected by a predetermined connector.

  Further, the side frame member 43 is formed with a groove 53 through which the first insulating sheet 11, the second insulating sheet 21, and the first sub-blocks B3, B13 and B23 of the spacer 30 constituting the seating sensor 3 are passed. Further, the inner diameter of the side frame member 43 and the outer diameters of the first insulating sheet 11, the second insulating sheet 21, and the main blocks B1, B11, and B21 of the spacer 30 are set to be approximately the same.

  Such a frame member 40 is placed on the seating sensor portion having the pressure-sensitive switch SW1, and the peripheral portion of the region AR having the pressure-sensitive switch SW1 on the upper surface of the seating sensor 3 and the upper frame member 41 facing the peripheral portion. The inner surface is attached and fixed with an adhesive or the like. Further, the outer surface of the upper frame member 41 is fixed to a cushion pad portion on the upper side of the slit 2C as in the case of the first embodiment.

  The frame member 40 of the present embodiment as described above connects the upper frame member 41 that surrounds the entire circumference of the region AR having the pressure sensitive switch SW1 and the side frame member 43 that surrounds the entire lateral circumference of the pressure sensitive switch SW1. It is supposed to be configured. For this reason, the strength of the frame member itself can be improved as compared with the frame member 40 of the first embodiment corresponding to only the upper frame member 41. Further, the relative position between the side frame member 43 and the pressure sensitive switch SW1 can be made difficult to shift.

(4) 4th Embodiment Next, 4th Embodiment suitable for the seat apparatus which concerns on this invention is described in detail, using drawing. However, among the constituent elements of the seat device in the fourth embodiment, constituent elements that are the same as or equivalent to those in the above embodiment are given the same reference numerals, and redundant descriptions are omitted as appropriate.

  FIG. 11 is a perspective view showing the arrangement of the frame members in the third embodiment from the same viewpoint as FIG. As shown in FIG. 11, in the present embodiment, the seat device frame member 40 includes the side frame member 43 and the reinforcing member 50 of the third embodiment, and the seat device of the first embodiment. Different.

  The reinforcing member 50 is a member that makes the lower side rigidity stronger than the upper side rigidity with the spacer 30 constituting the pressure sensitive switch SW1 as a boundary, and is connected to the side frame member 43 by integral molding.

  The rigidity of the reinforcing member 50 is at least greater than that of the cushion pad 2. In addition to the resin such as PET, PBT, or PEN, examples of the material of the reinforcing member 50 include metals. Note that it is preferable to use the reinforcing member 50 having rigidity higher than that of the second insulating sheet 21 from the viewpoint of strengthening the lower rigidity more than the upper rigidity with the spacer 30 in the pressure sensitive switch SW1 as a boundary.

  On such a frame member 40, a seating sensor part having a pressure sensitive switch SW1 is placed, and the first insulating sheet 11 on the lower side of the pressure sensitive switch SW1 is opposed to the first insulating sheet 11. The upper surface of the reinforcing member 50 is attached and fixed with an adhesive or the like. Moreover, it fixes to the cushion pad site | part used as the upper end of the frame member 40, and the slit 2C facing the upper end. Thus, the seat 2A and the seating sensor 3 are connected through the frame member 40.

  FIG. 12 is a diagram illustrating a state in which the pressure-sensitive switch SW1 is turned on in the fourth embodiment from the same viewpoint as that in FIG. 6B. As shown in FIG. 12, in the case of the present embodiment, when a person sits on the cushion pad 2, the seat portion 2A of the cushion pad 2 receives pressure from both the seat surface side and the lower surface side as described above. Join (see arrow).

  When such a pressure is applied to the seat portion 2A, in the first embodiment, as shown in FIG. 6B, the second upper side of the seating sensor 3 in accordance with the pressure from the seat portion 2A. Both the insulating sheet 21 and the lower first insulating sheet 11 entered the opening 31 </ b> A of the spacer 30.

  On the other hand, in the case of the present embodiment, the rigidity of the lower part of the pressure sensitive switch SW1 is made stronger than the rigidity of the upper part by the reinforcing member 50 in the lower part of the pressure sensitive switch SW1.

  For this reason, when the 1st insulating sheet 11 is pressed from the seat part 2A and bends, the bending amount is suppressed. Therefore, in the case of this embodiment, the second electrode 22A comes into contact with the first electrode 12A due to the bending of the second insulating sheet, and the pressure sensitive switch SW1 is turned on.

  In the above-described embodiment, the reinforcing member 50 that strengthens the rigidity of the lower part of the pressure sensitive switch SW1 than the rigidity of the upper part is provided at the lower part of the pressure sensitive switch SW1.

  When the rigidity of the lower part of the pressure-sensitive switch SW1 is made stronger than the rigidity of the upper part by the reinforcing member 50, the reinforcing member 50 suppresses the pressure-sensitive switch SW1 from being pressed from the cushion pad portion below the slit. To do. For this reason, it becomes possible to adjust the contact pressure of the pressure-sensitive switch SW1 only by the pressing force from the cushion pad portion generally above the slit, and the sensitivity of the pressure-sensitive switch SW1 can be further improved.

  Further, in the case of the present embodiment, such a reinforcing member 50 and the frame member 70 that surrounds the entire side periphery of the pressure sensitive switch SW1 are connected. Therefore, the reinforcing member 50 can not only reduce the decrease in durability of the pressure sensitive switch SW1, but also increase the strength of the frame member 70.

  In addition, when the height H1 of the slit 2C ((B) in FIG. 6) is larger than the sum of the height H2 of the seating sensor 3 and the height H3 of the frame member 40, the frame member 40 is interposed. A gap is formed below the seating sensor 3 fixed to the cushion pad portion on the upper side of the slit 2C.

  In such a case, the pressure-sensitive switch SW1 does not receive pressure from the cushion pad portion on the lower side of the slit 2C, but receives pressure from the cushion pad portion on the upper side of the slit 2C, and the second insulating sheet 21 bends. . At this time, if the reinforcing member 50 is not provided below the pressure sensitive switch SW1, the first insulating sheet 11 is also bent in the same manner as the second insulating sheet 21, and the first insulating sheet 11 is bent between the first electrode 12A and the second electrode 22A. The distance hardly changes between when the insulating sheet is not bent and when the insulating sheet is bent, and the tendency that the electrodes are difficult to contact with each other increases.

  On the other hand, when the reinforcing member 50 is provided, the amount of bending of the first insulating sheet 11 is significantly smaller than the amount of bending of the second insulating sheet 21, and between the first electrode 12 </ b> A and the second electrode 22 </ b> A. The distance varies greatly depending on whether the insulating sheet is bent or not. Therefore, even if the pressing force from the seat surface side is small, the first electrode 12A and the second electrode 22A can easily come into contact with each other, and the sensitivity of the pressure sensitive switch SW1 itself can be improved.

  Accordingly, it is particularly useful to provide the reinforcing member 50 when a gap is formed below the seating sensor 3.

(5) Fifth Embodiment Next, a fifth embodiment suitable for the seat device according to the present invention will be described in detail with reference to the drawings. However, among the constituent elements of the seat device in the fifth embodiment, constituent elements that are the same as or equivalent to those in the above embodiment are given the same reference numerals, and redundant descriptions are omitted as appropriate.

  FIG. 13 is a perspective view showing the arrangement of the frame members in the fifth embodiment from the same viewpoint as FIG. As shown in FIG. 13, in this embodiment, the frame member 40 of a seat apparatus differs from the seat apparatus of 3rd Embodiment by the point provided with the reinforcement member 50 as a new component.

  The reinforcing member 50 and the side frame member 43 are connected to each other by a hinge 60 so as to be freely opened and closed. A seating sensor portion having a pressure-sensitive switch SW1 is sandwiched between the side frame member 43 and the reinforcing member 50 of the frame member 40, and the side frame member 43 and the reinforcing member 50 are, for example, an adhesive tape or the like. It is fixed with. Further, the outer surface of the upper frame member 41 in the frame member 40 is fixed to a cushion pad portion on the upper side of the slit 2C as in the case of the third embodiment.

  According to the present embodiment, the side frame member 43 can obtain the same effect as that described in the third embodiment, and the reinforcing member 50 can have the same effect as that described in the fourth embodiment. Can be obtained.

(6) Sixth Embodiment Next, a sixth embodiment suitable for the seat device according to the present invention will be described in detail with reference to the drawings. However, among the components of the seat device in the sixth embodiment, components that are the same as or equivalent to those in the above embodiment are given the same reference numerals, and redundant descriptions are omitted as appropriate.

  FIG. 14 is a perspective view showing the arrangement of the frame members in the sixth embodiment from the same viewpoint as FIG. As shown in FIG. 14, in this embodiment, the frame member 40 of a seat apparatus differs from the seat apparatus of 5th Embodiment by the point which replaced the side frame member 43 with the side frame member 44. As shown in FIG.

  The side frame member 44 is formed with a groove 54 through which the main blocks B1, B11, and B21 are passed, and the side frame member is formed with a groove 53 through which the first sub-blocks B3, B13, and B23 are passed. 43 is different.

  The upper end of the side frame member 44 is connected to the lower surface peripheral part of the upper frame member 41 by integral molding, and the lower end of the side frame member 44 is connected to the upper peripheral part of the reinforcing member 50 by integral molding. . The side frame member 44 and the upper frame member 41 or the reinforcing member 50 are not limited to being connected by integral molding, but may be connected by a predetermined connector.

  From such a groove 54 of the side frame member 44 in the frame member 40, the seating sensor portion having the pressure sensitive switch SW <b> 1 is accommodated in a space surrounded by the upper frame member 41 and the side frame member 44. And like the case of 2nd Embodiment, the inner surface of the upper side frame member 41 and the peripheral part of the area | region which has pressure-sensitive switch SW1 are fixed, and it becomes the outer surface of the said upper side frame member 41, and the upper side of the slit 2C. The cushion pad part is fixed.

  According to the above embodiment, the side frame member 44 can obtain the same effect as that described in the third embodiment, and the reinforcing member 50 can have the same effect as that described in the fourth embodiment. Can be obtained.

(7) 7th Embodiment Next, 7th Embodiment suitable for the seat apparatus which concerns on this invention is described in detail, using drawing. However, among the components of the seat device according to the seventh embodiment, the same or equivalent components as those of the above-described embodiment are denoted by the same reference numerals, and redundant descriptions are omitted as appropriate.

  FIG. 15 is a perspective view showing the arrangement of the frame members in the seventh embodiment from the same viewpoint as FIG. As shown in FIG. 15, the seat device of the present embodiment is different from the seat device of the second embodiment in that the lower frame member 42 of the second embodiment is replaced with a reinforcing member 50 of the fourth embodiment.

  One surface of the reinforcing member 50 is fixed to the lower surface of the first insulating sheet 11 by, for example, an adhesive, and the other surface is bonded to the cushion pad portion below the slit 2C by, for example, an adhesive. Fixed.

  According to the above embodiment, the upper frame member 41 can obtain the same effects as those described in the first embodiment and the second embodiment, and the reinforcing member 50 is described in the fourth embodiment. The same effect can be obtained.

(8) Eighth Embodiment Next, an eighth embodiment suitable for the seat device according to the present invention will be described in detail with reference to the drawings. However, among the components of the seat device according to the eighth embodiment, the same or equivalent components as those of the above embodiment are denoted by the same reference numerals, and redundant description will be omitted as appropriate.

  FIG. 16 is a perspective view showing the arrangement of the frame members in the eighth embodiment from the same viewpoint as FIG. As shown in FIG. 15, the seat device of the present embodiment is different in that the cushion member 70 interposed between the first insulating sheet 11 and the reinforcing member 50 of the fourth embodiment is provided as a new component. Different from the seat device of the fourth embodiment.

  The cushion member 70 is an elastic member that deforms so as to be crushed when pressure is applied. For example, the cushion member 70 is formed of a sponge-like resin provided with a large number of pores, a nonwoven fabric in which resin fibers are intertwined, rubber, or the like. The

  In the case of the present embodiment, the cushion member 70 has, for example, a thin cylindrical shape, and the wide surface thereof is, for example, the same as the wide surface of the first insulating sheet 11.

  One surface of the cushion member 70 is fixed to the lower surface of the first insulating sheet 11 by, for example, an adhesive, and the other surface is fixed to the surface of the reinforcing member 50 by, for example, an adhesive. .

  By the way, as shown in FIG. 12, when the reinforcing member 50 is provided, the pressure-sensitive switch SW1 does not receive a pressure from the cushion pad portion on the lower side of the slit 2C, and the cushion on the upper side of the slit 2C. The second insulating sheet 21 is bent by receiving pressure from the pad portion. At this time, if the cushion member 70 is not provided between the first insulating sheet 11 and the reinforcing member 50, the stress from the reinforcing member side caused by the bending of the second insulating sheet 21 is hardly received. Therefore, the first insulating sheet 11 is not generally bent.

  On the other hand, as shown in FIG. 17, when the cushion member 70 is provided, the stress from the reinforcing member side caused by the bending of the second insulating sheet 21 by the cushion member 70 causes the pressure-sensitive switch SW1 to be stressed. Given from the lower side, the first insulating sheet 11 bends.

  Therefore, compared with the fourth embodiment in which the cushion member 70 is not provided between the first insulating sheet 11 and the reinforcing member 50, the pressure applied from the cushion pad 2 can be transmitted to the pressure sensitive switch SW1 more greatly. .

  In addition, the stress from the reinforcing member side caused by the bending of the second insulating sheet 21 is given from the lower side of the pressure sensitive switch SW1 almost evenly by the cushion member 70. Therefore, as in the case of the fourth embodiment, due to the difference between the pressing force applied to the upper side of the pressure sensitive switch SW1 and the pressing force applied to the lower side of the pressure sensitive switch SW1, the pressure sensitive switch SW1 is Pressing in a distorted state can be suppressed.

  In addition, you may make it provide such a cushion member 70 between the 1st insulating sheet 11 and the reinforcement member 50 in the above-mentioned 5th Embodiment-7th Embodiment. Moreover, it is also possible to provide between the 1st insulating sheet 11 in 1st Embodiment and 3rd Embodiment, and the cushion pad site | part used as the lower side of 2 C of slits. Furthermore, it is also possible to provide between the first insulating sheet 11 and the lower frame member 42 and between the second insulating sheet 21 and the upper frame member 41 in the second embodiment.

(9) Other Embodiments The first to eighth embodiments have been described above as examples, but the present invention is not limited to these embodiments.

  For example, in the above embodiment, the upper frame member 41, the lower frame member 42, and the side frame members 43 and 44 surround the entire circumference of the pressure sensitive switch SW1, but the portions of the pressure sensitive switch SW1 that face each other. It may be a frame member located at the position. In short, any frame member may be used as long as it is provided at the periphery of the pressure-sensitive switch and provided at least at portions facing each other.

  In the above embodiment, the upper side of the frame member is fixed to the cushion pad portion that is the upper side of the slit 2C. However, the lower side of the frame member may be fixed to the cushion pad portion that is the lower side of the slit 2C. The member may not be fixed to the cushion pad part.

  Moreover, in the said embodiment, fixation with the cushion pad site | part which becomes the upper side of a frame member and slit 2C, and fixation with the upper surface of the frame member and the seating sensor 3 were performed with the adhesive agent. However, these fixations may be performed by pressing a cushion pad portion on the upper side of the slit 2C.

  For example, when the height H1 of the slit 2C is smaller than the height H2 of the seating sensor 3, the frame member and the cushion pad above the slit 2C are pressed by pressing the cushion pad portion above the slit 2C. The part, the frame member, and the seating sensor can be fixed.

  Thus, when the frame member and the seating sensor are pressed from the cushion pad portion on the upper side of the slit 2C to the cushion pad portion on the lower side of the slit 2C, the seating is performed without using other members such as an adhesive. A relative positional shift between the sensor and the frame member can be prevented. By the way, when the frame member is fixed to the cushion pad with an adhesive, the cushioning property of the cushion pad may be changed depending on the type of the adhesive. Therefore, it is possible to prevent the relative displacement between the seating sensor and the frame member while avoiding such a possibility.

  Moreover, in the said embodiment, although the number of the pressure sensitive switches in the seating sensor 3 was two, one may be sufficient and three or more may be sufficient. When the number of pressure sensitive switches is two or more, it is essential to arrange all or part of the pressure sensitive switches symmetrically with respect to the vertical plane VF passing through the center of the cushion pad 2 in the width direction. It will not be. When the number of pressure sensitive switches is two or more, all or part of the pressure sensitive switches may be arranged in the front-rear direction of the seat portion 2A.

  In the above embodiment, the seating sensor 3 has the two pressure-sensitive switches SW1 and SW2. However, a plurality of seating sensors are configured with the seating sensor having one pressure-sensitive switch as a unit, and these are connected to the cable. You may make it connect via.

  Moreover, in the said embodiment, the shape and magnitude | size of 1st electrode 12A and 12B and 2nd electrode 22A and 22B 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 be different between the first electrodes 12A and 12B and the second electrodes 22A and 22B, and may not completely overlap each other.

  Moreover, in the said embodiment, although the magnitude | size of opening 31A and 31B was made the same, you may be set as 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. Therefore, by varying the sizes of the openings in two or more pressure sensitive switches arranged at different positions, it is possible to suppress variations in sensitivity in these pressure sensitive switches. In addition, the pressure distribution applied to the seat 2A on which a person is seated tends to be different in the front-rear direction of the seat 2A. Therefore, when a plurality of pressure-sensitive switches are arranged in the front-rear direction of the seat portion 2A, it is particularly useful to have openings having two or more sizes.

  Moreover, in the said 4th Embodiment-8th Embodiment, the reinforcement member 50 which strengthens the rigidity of the lower part of pressure sensitive switch SW1 or SW2 rather than the rigidity of upper part was provided. However, instead of the reinforcing member 50, the first insulating sheet 11 is made of a material having rigidity higher than that of the second insulating sheet 21, or the first insulating sheet has a thickness larger than the thickness of the second insulating sheet 21. By configuring the seat 11, the lower rigidity of the pressure sensitive switch SW1 or SW2 may be made stronger than the upper rigidity.

  Moreover, the shape of each component in the said embodiment is an example to the last, and various shapes can be applied.

  In addition, each component of the seat device is appropriately combined, omitted, modified, or well-known in the scope of the present application other than the contents shown in the first to eighth embodiments or other embodiments. Additions can be made.

  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 ... Seat apparatus 2 ... Cushion pad 2A ... Seat part 2B ... Backrest part 2C ... Slit 3 ... Seating sensor 10 ... 1st electrode sheet 11 ... 1st insulation Sheet 12A, 12B ... 1st electrode 13A, 13B ... Terminal 14A, 14B ... Wiring 20 ... 2nd electrode sheet 21 ... 2nd insulation sheet 22A, 22B ... 2nd electrode 24A ... Second wiring 30 ... Spacers 31A, 31B ... Openings 32A, 32B ... Slits 40 ... Frame members 41 ... Upper frame members 42 ... Lower frame members 43,44 ..Side frame member 50 ... Reinforcing member 60 ... Hinge 70 ... Cushion member SW1, SW2 ... Pressure sensitive switch

Claims (5)

A cushion pad having a slit formed from the side surface of the seat portion to the inside of the seat portion;
A seating sensor having a pressure sensitive switch;
A frame member provided at the periphery of the pressure sensitive switch,
The frame member is provided on a portion of the upper peripheral edge of the pressure-sensitive switch facing each other across at least the pressure-sensitive switch, and an upper frame whose upper end is located on the seating surface side of the seat portion with respect to the upper surface of the seating sensor. The seating sensor and the frame member are housed in the slit ,
A reinforcement member having a rigidity higher than that of the cushion pad is provided at a lower portion of the pressure sensitive switch,
The seat device according to claim 1, wherein the frame member is provided up to a side of the pressure sensitive switch and is connected to the reinforcing member . The seat device according to claim 1, wherein the frame member is provided around the entire periphery of the region having the pressure-sensitive switch. The seat device according to claim 1, wherein at least a part of the frame member is provided on an upper surface of the seating sensor. The seat device according to claim 3, wherein the frame member is fixed to an upper surface of the seating sensor. The seat device according to any one of claims 1 to 4 , wherein an upper end of the frame member is fixed to a cushion pad portion on the upper side of the slit.

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