A pressure pad, a seat comfort system and a seat

Abstract

This application relates to a pressure pad, a seat comfort system, and a seat. The pressure pad includes a first conductive layer, a pressure-sensitive layer, and a second conductive layer. The first conductive layer includes a first carrier, a first insulating wire, and a first conductive wire. The first conductive wire is wound and fixed to the first carrier by the first insulating wire. The first insulating wire includes a first fixed section and a second fixed section. The stitch spacing of the first fixed section is greater than the stitch spacing of the second fixed section. When the pressure pad is subjected to external force, at least a portion of the first conductive wire located in the first fixed section passes through the stitch gap of the first fixed section and is electrically connected to the second conductive layer to form a sensing point. The second fixed section always separates the first conductive wire in the second fixed section from the pressure-sensitive layer, thereby keeping the first conductive wire in the second fixed section insulated from the second conductive layer and ensuring that the function of the pressure pad is not sacrificed due to the presence of the first insulating wire. In addition, at non-sensing points, the first conductive wire and the second conductive layer are insulated to reduce crosstalk.

Description

Technical Field

[0001] This application relates to the field of seat technology, and more particularly to a pressure pad, a seat comfort system, and a seat. Background Technology

[0002] In existing technology, vehicle seat cushions are typically equipped with pressure pads. These pressure pads determine the pressure on their surface by detecting changes in capacitance or resistance at several sensing points, thereby analyzing changes in the user's posture so that the user can adjust their sitting, standing, or lying posture accordingly. When a specific area of ​​the pressure pad is subjected to pressure, the sensing points in that area will generate a significant change in electrical signal, thus enabling pressure detection.

[0003] The pressure pad comprises two conductive layers. One conductive layer has transverse conductive lines, and the other conductive layer has longitudinal conductive lines. Both transverse and longitudinal conductive lines are connected to the PCB (Printed Circuit Board) control motherboard via an FPC (Flexible Printed Circuit). In existing technologies, electrical connection is achieved by the conductive lines on the flexible circuit board (e.g., gold fingers) making contact with the conductive lines.

[0004] However, the way the wires and conductive lines are connected on the flexible circuit board, such as by bonding or direct soldering, makes the connection between them prone to falling off under stress, which means that the connection between the two is not reliable and the pressure pad has poor stability in use.

[0005] Later improvements involved sewing conductive wires into the conductive layer using insulating wires, thereby indirectly improving the reliability of the connection between the conductors and conductive wires on the flexible circuit board.

[0006] However, the applicant of this application discovered in the process of implementing this application that: currently, the conductive lines in the two conductive layers are electrically connected at the sensing point through the gap in the traces of the insulating wires; however, the conductive lines in the two conductive layers at the non-sensing point will generate crosstalk through the gap in the traces of the insulating wires and the varistor layer. Utility Model Content

[0007] In view of the above problems, embodiments of this application provide a pressure pad, a seat comfort system, and a seat, which overcome or at least partially solve the above problems.

[0008] According to one aspect of the embodiments of this application, a pressure pad is provided, including a first conductive layer, a pressure-sensitive layer, and a second conductive layer; the first conductive layer includes a first carrier, a first insulating wire, and a first conductive wire, the first conductive wire being wound and fixed to the first carrier by the first insulating wire, the first insulating wire including a first fixed segment and a second fixed segment, the stitch spacing of the first fixed segment being greater than the stitch spacing of the second fixed segment; the pressure-sensitive layer is disposed between the first conductive layer and the second conductive layer; when the pressure pad is subjected to an external force, at least a portion of the first conductive wire located in the first fixed segment passes through the stitch gap of the first fixed segment and is electrically connected to the second conductive layer through the pressure-sensitive layer to form a sensing point, the second fixed segment always separates the first conductive wire in the second fixed segment from the pressure-sensitive layer, thereby keeping the first conductive wire in the second fixed segment insulated from the second conductive layer.

[0009] In one alternative embodiment, the second conductive layer includes a second carrier, a second insulating wire, and a second conductive wire. The second conductive wire is wound and fixed to the second carrier by the second insulating wire. The second insulating wire includes a third fixed segment and a fourth fixed segment. The stitch spacing of the third fixed segment is greater than the stitch spacing of the fourth fixed segment. When the pressure pad is subjected to external force, at least a portion of the first conductive wire located in the first fixed segment passes through the stitch gap of the first fixed segment and is electrically connected to at least a portion of the second conductive wire located in the third fixed segment through the stitch gap of the third fixed segment to form the sensing point. The fourth fixed segment always separates the second conductive wire from the pressure-sensitive layer, thereby keeping the second conductive wire in the fourth fixed segment insulated from the first conductive wire.

[0010] In one optional embodiment, the number of first conductive wires is M, and the M first conductive wires are spaced apart along a first direction; the number of first insulating wires is M, and one of the first conductive wires is wound and fixed to the first carrier by one of the first insulating wires; the number of second conductive wires is N, and the N second conductive wires are spaced apart along a second direction; the number of second insulating wires is N, and one of the second conductive wires is wound and fixed to the second carrier by one of the second insulating wires; the M first conductive wires are electrically connected through the stitch gaps of the first fixed segment and the N second conductive wires are electrically connected through the stitch gaps of the third fixed segment to form M*N sensing points.

[0011] In an alternative embodiment, the pressure pad further includes a connecting terminal, wherein both the first conductive wire and the second conductive wire are in communication with the connecting terminal.

[0012] In one alternative embodiment, the stitch spacing of the first fixed segment is between 1.5 mm and 2.5 mm, and the stitch spacing of the second fixed segment is less than or equal to 0.5 mm; and / or, the stitch spacing of the third fixed segment is between 1.5 mm and 2.5 mm, and the stitch spacing of the fourth fixed segment is less than or equal to 0.5 mm.

[0013] In one alternative embodiment, the first conductive wire includes a first portion, a second portion, and a third portion connected together. The first portion is disposed on the side of the first carrier facing the pressure-sensitive layer, the second portion penetrates the first carrier, and the third portion is disposed on the side of the first carrier facing away from the pressure-sensitive layer. The first portion is wound and fixed to the first carrier by a first fixing segment, and the first portion is electrically connected to the second conductive wire through the stitch gap of the first fixing segment and through the stitch gap of the third fixing segment to form the sensing point. The third portion is wound and fixed to the first carrier by the second fixing segment, and the second fixing segment and the first carrier insulate the third portion and the second conductive wire.

[0014] In one alternative embodiment, the second conductive wire includes a first segment, a second segment, and a third segment connected together. The first segment is disposed on the side of the second carrier facing the pressure-sensitive layer, the second segment penetrates the second carrier, and the third segment is disposed on the side of the second carrier facing away from the pressure-sensitive layer. The first segment is wound and fixed to the second carrier by the third fixing segment. The first portion is electrically connected to the first segment through the stitch gap of the first fixing segment and the first segment through the stitch gap of the third fixing segment to form the sensing point. The third segment is wound and fixed to the second carrier by the fourth fixing segment. The second fixing segment and the fourth fixing segment insulate the third portion and the third segment.

[0015] In one optional embodiment, the pressure pad further includes ventilation holes that penetrate the first carrier, the pressure-sensitive layer, and the second carrier, and that avoid the first and second conductive wires. The pressure pad also includes a first waterproof layer and a second waterproof layer. The first waterproof layer is located on the side of the first conductive layer facing away from the pressure-sensitive layer, and the second waterproof layer is located on the side of the second conductive layer facing away from the pressure-sensitive layer. The first and second waterproof layers contact each other through the ventilation holes to form a waterproof portion. The waterproof portion includes vent holes located within the ventilation holes, and the vent holes are spaced apart from the ventilation holes.

[0016] According to one aspect of the embodiments of this application, a seat comfort system is provided, including the aforementioned pressure pad.

[0017] According to one aspect of the embodiments of this application, a seat is provided, including the aforementioned seat comfort system.

[0018] The beneficial effects of this application embodiment are as follows: A pressure pad is provided, including a first conductive layer, a pressure-sensitive layer, and a second conductive layer. The first conductive layer includes a first carrier, a first insulating wire, and a first conductive wire. The first conductive wire is wound and fixed to the first carrier by the first insulating wire. The first insulating wire includes a first fixed segment and a second fixed segment. The stitch spacing of the first fixed segment is greater than the stitch spacing of the second fixed segment. The pressure-sensitive layer is disposed between the first conductive layer and the second conductive layer. When the pressure pad is subjected to external force, at least a portion of the first conductive wire located in the first fixed segment passes through the stitch gap of the first fixed segment and is electrically connected to the second conductive layer through the pressure-sensitive layer to form a sensing point. The second fixed segment always separates the first conductive wire in the second fixed segment from the pressure-sensitive layer, thereby keeping the first conductive wire in the second fixed segment insulated from the second conductive layer. Through this pressure pad, the first insulating wire fixes the first conductive wire to the first carrier, thus indirectly improving the connection reliability of the first conductive wire when connected to external devices.

[0019] In addition, the first conductive wire is electrically connected to the second conductive layer through the gap in the stitches of the first fixed section of the first insulating wire to form a sensing point, so that the function of the pressure pad is not sacrificed due to the setting of the first insulating wire.

[0020] Equally important, the second fixed section of the first insulating wire insulates the first conductive wire and the second conductive layer, thereby insulating the first conductive wire and the second conductive layer at non-inductive sites, reducing the risk of crosstalk and improving the sensitivity of the pressure pad.

[0021] Equally important, when an occupant acts on the pressure pad, the first conductive wire and the second conductive layer come into contact to form a sensing point, ensuring the function of the pressure pad. When the occupant leaves the pressure pad, the presence of the first insulating wire provides a restoring force, reducing the risk that the pressure pad will still generate sensing data when the occupant leaves the pressure pad. Attached Figure Description

[0022] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0023] Figure 1 This is a schematic diagram of one implementation of the pressure pad provided in the embodiments of this application;

[0024] Figure 2This is an exploded view of one implementation of the pressure pad provided in the embodiments of this application;

[0025] Figure 3 This is a wireframe diagram of one implementation of the pressure pad provided in the embodiments of this application;

[0026] Figure 4 This is a cross-sectional view of one implementation of the first conductive layer provided in the embodiments of this application;

[0027] Figure 5 This is an exploded view of another implementation of the pressure pad provided in the embodiments of this application;

[0028] Figure 6 This is a cross-sectional view of one implementation of the second conductive layer provided in the embodiments of this application;

[0029] Figure 7 This is an exploded view of another implementation of the pressure pad provided in the embodiments of this application;

[0030] Figure 8 This is a schematic diagram of yet another implementation of the pressure pad provided in the embodiments of this application;

[0031] Figure 9 This is an exploded view of another implementation of the pressure pad provided in the embodiments of this application;

[0032] Figure 10 This is a schematic diagram of the seat provided in an embodiment of this application.

[0033] The labels in the attached diagram are as follows:

[0034] 100. Pressure pad;

[0035] 10. First conductive layer; 20. Pressure-sensitive layer; 30. Second conductive layer; 40. Connecting terminal; 50. Controller; 60. First waterproof layer; 70. Second waterproof layer; 60a. First protective layer; 70a. Second protective layer; 80. Suture thread;

[0036] 100a, Ventilation hole; 100b, Waterproof section; 100c, Breathing hole;

[0037] 11. First carrier; 12. First insulating wire; 13. First conductive wire;

[0038] 121. First fixed segment; 122. Second fixed segment; d1. Stitch spacing of the first fixed segment; d2. Stitch spacing of the second fixed segment;

[0039] 131. Part One; 132. Part Two; 133. Part Three;

[0040] 31. Second carrier; 32. Second insulating wire; 33. Second conductive wire;

[0041] 321. Third fixed segment; 322. Fourth fixed segment; d3. Stitch gap of the third fixed segment; d4. Stitch gap of the fourth fixed segment;

[0042] 331. First section; 332. Second section; 333. Third section;

[0043] 200. Seat comfort system;

[0044] 201. Air bag; 202. Air source; 203. Control system;

[0045] 1000, Seat; 300, Backrest; 400, Seat Cushion. Detailed Implementation

[0046] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.

[0047] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0048] Please see Figures 1 to 3 The pressure pad 100 includes a first conductive layer 10, a pressure-sensitive layer 20, and a second conductive layer 30, wherein the pressure-sensitive layer 20 is disposed between the first conductive layer 10 and the second conductive layer 30. The first conductive layer 10 and the second conductive layer 30 are electrically connected through the pressure-sensitive layer 20 to form a sensing point, which is used to generate changes in electrical signals, thereby enabling the pressure pad 100 to detect pressure.

[0049] In some embodiments, the first conductive layer 10 includes a first carrier 11, a first insulating wire 12, and a first conductive wire 13. The first conductive wire 13 is wound and fixed to the first carrier 11 by the first insulating wire 12. The first insulating wire 12 includes a first fixed section 121 and a second fixed section 122. The stitch spacing d1 of the first fixed section 121 is greater than the stitch spacing d2 of the second fixed section 122. When the pressure pad 100 is subjected to external force, at least a portion of the first conductive wire 13 located in the first fixed section 121 passes through the stitch gap of the first fixed section 121 and is electrically connected to the second conductive layer 30 through the pressure-sensitive layer 20 to form a sensing point. The second fixed section 122 always separates the first conductive wire 13 in the second fixed section 122 from the pressure-sensitive layer 20, thereby keeping the first conductive wire 13 in the second fixed section 122 insulated from the second conductive layer 30. Through the pressure pad 100, the first insulating wire 12 fixes the first conductive wire 13 to the first carrier 11, thereby indirectly improving the connection reliability of the first conductive wire 13 when connected to external devices. Furthermore, at least a portion of the first conductive wire 13 is electrically connected to the second conductive layer 30 through the stitch gaps of the first fixing segment 121 of the first insulating wire 12, forming a sensing point, ensuring that the function of the pressure pad 100 is not sacrificed due to the presence of the first insulating wire 12. Equally important, the second fixing segment 122 of the first insulating wire 12 separates the first conductive wire 13 and the pressure-sensitive layer 20 within the second fixing segment 122, insulating the first conductive wire 13 and the second conductive layer 30. This ensures that at non-sensing points, the first conductive wire 13 and the second conductive layer 30 are insulated, reducing the risk of crosstalk and improving the sensitivity of the pressure pad 100. Equally important, when an occupant applies pressure pad 100, the first conductive wire 13 and the second conductive layer 30 come into contact to form a sensing point, ensuring the function of pressure pad 100. When the occupant leaves pressure pad 100, the presence of the first insulating wire 12 provides restoring force, reducing the risk that pressure pad 100 will still generate sensing data when the occupant leaves pressure pad 100.

[0050] It is worth noting that in some embodiments, the stitch spacing d1 of the first fixed segment 121 is between 1.5 mm and at least 2.5 mm, and the stitch spacing d2 of the second fixed segment 122 is less than or equal to 0.5 mm.

[0051] It is worth noting that in some embodiments, the first insulating wire 12 is used to wrap and fix the first conductive wire 13 to the first carrier 11 by sewing.

[0052] Among them, the stitch spacing is the distance between two adjacent stitches, and the stitch gap is the space between two adjacent stitches.

[0053] It is worth noting that in some embodiments, the first carrier 11 is a woven fabric layer.

[0054] It is worth noting that in some embodiments, there are multiple first fixed segments 121, so that the first conductive lines 13 in multiple first fixed segments 121 pass through the line gaps of the first fixed segments 121 and the pressure-sensitive layer 20, thereby electrically communicating with the second conductive layer 30 to form multiple sensing sites.

[0055] It is understood that when there are multiple first fixed segments 121, there are multiple second fixed segments 122. The number of second fixed segments 122 and the number of first fixed segments 121 can be the same or different. For example, the number of second fixed segments 122 is one more than the number of first fixed segments 121, or the number of second fixed segments 122 is one less than the number of first fixed segments 121.

[0056] It is worth noting that in some embodiments, please refer to [link / reference]. Figure 4 and Figure 5 The first conductive line 13 includes a first portion 131, a second portion 132, and a third portion 133 connected together. The first portion 131 is disposed on the side of the first carrier 11 facing the pressure-sensitive layer 20, the second portion 132 penetrates the first carrier 11, and the third portion 133 is disposed on the side of the first carrier 11 facing away from the pressure-sensitive layer 20. The first portion 131 is electrically connected to the second conductive layer 30 through the pressure-sensitive layer 20 to form a sensing point. Specifically, the first portion 131 is electrically connected to the second conductive layer 30 through the gap in the stitch of the first fixed segment 121 and the pressure-sensitive layer 20 to form the sensing point. Through this pressure pad 100, the first portion 131 of the first conductive line 13 is electrically connected to the second conductive layer 30 through the pressure-sensitive layer 20 to form a sensing point, ensuring the function of the pressure pad 100. The third portion 133 (non-sensing point) of the first conductive line 13, because it is disposed on the side of the first carrier 11 facing away from the pressure-sensitive layer 20, reduces the risk of crosstalk at non-sensing points and improves the sensitivity of the pressure pad 100.

[0057] It is worth noting that there can be multiple first portions 131, which can be electrically connected with the second conductive layer 30 to form multiple sensing sites. It is understood that when there are multiple first portions 131, there are multiple second portions 132, and multiple third portions 133; the number of second portions 132 and the number of third portions correspond to the number of first portions 131, so that the first portions 131, second portions 132, and third portions 133 are connected to form a continuous first conductive line 13.

[0058] It is understood that when the first conductive line 13 includes the first part 131, the second part 132 and the third part 133, the first insulating line 12 may not be provided, which can also reduce the risk of crosstalk at non-inductive points and improve the sensitivity of the pressure pad 100.

[0059] The pressure-sensitive layer 20 is a material layer with pressure-responsive characteristics; its resistance changes when subjected to external force. In this embodiment, the pressure-sensitive layer 20 can be made of polyimide film, which has good flexibility and pressure-responsive characteristics, effectively converting pressure changes into electrical signal changes. The pressure-sensitive layer 20 is disposed between the first conductive layer 10 and the second conductive layer 30. When the pressure pad 100 is subjected to external force, the pressure-sensitive layer 20 deforms, causing a change in the contact area between the first conductive layer 10 and the second conductive layer 30, thereby changing the resistance value of the sensing point and generating an electrical signal change. This electrical signal change can be collected and converted into a digital signal, thereby achieving accurate pressure detection.

[0060] In some embodiments, the second conductive layer 30 includes a second carrier 31, a second insulating wire 32, and a second conductive wire 33. The second conductive wire 33 is wound and fixed to the second carrier 31 by the second insulating wire 32. The second insulating wire 32 includes a third fixing segment 321 and a fourth fixing segment 322. The stitch spacing of the third fixing segment 321 is greater than the stitch spacing of the fourth fixing segment 322. When the pressure pad 100 is subjected to external force, at least a portion of the first conductive wire 13 located in the first fixing segment 121 passes through the stitch gap of the first fixing segment 121 and is electrically connected to at least a portion of the second conductive wire 33 located in the third fixing segment 321 through the stitch gap of the third fixing segment 321 to form the sensing point. The fourth fixing segment 322 always separates the second conductive wire 33 from the pressure-sensitive layer 20, thereby keeping the second conductive wire 33 in the fourth fixing segment 322 insulated from the first conductive wire 13. With this configuration, the second insulating wire 32 fixes the second conductive wire 33 to the second carrier 31, thus indirectly improving the connection reliability of the second conductive wire 33 when connected to external devices. Furthermore, the first conductive wire 13 forms a sensing point through the stitch gap of the first fixed segment 121 of the first insulating wire 12 and the second conductive wire 33 through the stitch gap d3 of the third fixed segment 321 of the second insulating wire 32, ensuring that the function of the pressure pad 100 is not sacrificed due to the configuration of the first insulating wire 12 and the second insulating wire 32. Equally important, the second fixed segment 122 of the first insulating wire 12 and the fourth fixed segment 322 of the second insulating wire 32 insulate the first conductive wire 13, the pressure-sensitive layer 20, and the second conductive wire 33. Therefore, at non-sensing points, the first conductive wire 13 and the second conductive wire 33 are insulated, reducing the risk of crosstalk and further improving the sensitivity of the pressure pad 100. Equally important, when an occupant applies pressure pad 100, the first conductive wire 13 forms a sensing point through the stitch gap of the first fixed segment 121 of the first insulating wire 12 and the second conductive wire 33 forms a contact point through the stitch gap d3 of the third fixed segment 321 of the second insulating wire 32, ensuring the function of pressure pad 100. When the occupant leaves pressure pad 100, the presence of the first insulating wire 12 and the second insulating wire 32 provides restoring force, further reducing the risk that pressure pad 100 will still generate sensing data when the occupant leaves pressure pad 100.

[0061] It is worth noting that in some embodiments, the stitch spacing d3 of the third fixed segment 321 is between 1.5 mm and at least 2.5 mm, and the stitch spacing d4 of the fourth fixed segment 322 is less than or equal to 0.5 mm.

[0062] It is worth noting that in some embodiments, the second insulating wire 32 is used to wrap and fix the second conductive wire 33 to the second carrier 31 by sewing.

[0063] It is worth noting that in some embodiments, the second carrier 31 is a woven fabric layer.

[0064] It is worth noting that in some embodiments, there are multiple third fixed segments 321, so that the second conductive lines 33 in multiple third fixed segments 321 are electrically connected with the first conductive lines 13 through the line gaps d3 of the third fixed segments 321 and the pressure-sensitive layer 20 to form multiple sensing sites.

[0065] It is understood that when there are multiple third fixed segments 321, there are also multiple fourth fixed segments 322. The number of fourth fixed segments 322 and the number of third fixed segments 321 can be the same or different. For example, the number of fourth fixed segments 322 is one more than the number of third fixed segments 321, or the number of fourth fixed segments 322 is one less than the number of third fixed segments 321.

[0066] It is worth noting that in some embodiments, please refer to [link / reference]. Figure 5 and Figure 6 The second conductive line 33 includes a first segment 331, a second segment 332, and a third segment 333 connected together. The first segment 331 is disposed on the side of the second carrier 31 facing the pressure-sensitive layer 20, the second segment 332 penetrates the second carrier 31, and the third segment 333 is disposed on the side of the second carrier 31 facing away from the pressure-sensitive layer 20. The first portion 131 is electrically connected to the first segment 331 through the pressure-sensitive layer 20 to form the sensing point. Specifically, the first portion 131 of the first conductive line 13 is electrically connected to the first segment 331 of the second conductive line 33 through the stitch gap d3 of the third fixed segment 321 via the stitch gap d3 of the first fixed segment 121 and the pressure-sensitive layer 20 to form the sensing point. Through the pressure pad 100, the first part 131 of the first conductive line 13 is electrically connected to the first section 331 through the pressure-sensitive layer 20 to form a sensing point, ensuring the function of the pressure pad 100. The third part 133 (non-sensing point) of the first conductive line 13 is located on the side of the first carrier 11 away from the pressure-sensitive layer 20, and the third section 333 (non-sensing point) of the second conductive line 33 is located on the side of the second carrier 31 away from the pressure-sensitive layer 20, reducing the risk of crosstalk at non-sensing points and improving the sensitivity of the pressure pad 100.

[0067] It is worth noting that there can be multiple first segments 331, which can be electrically connected with the second conductive layer 30 to form multiple sensing sites. It is understood that when there are multiple first segments 331, there are multiple second segments 332, and multiple third segments 333; the number of second segments 332 and the number of third segments correspond to the number of first segments 331, so that the first segments 331, second segments 332, and third segments 333 are connected to form a continuous second conductive line 33.

[0068] It is understood that when the second conductive line 33 includes the connected first section 331, second section 332 and third section 333, the second insulating line 32 may not be provided. This can also achieve the technical effect of reducing the risk of crosstalk at non-inductive points and improving the sensitivity of the pressure pad 100.

[0069] In some embodiments, the number of first conductive lines 13 and second conductive lines 33 is M, and these M lines are spaced apart along a first direction; the number of second conductive lines 33 is N, and these N lines are spaced apart along a second direction; the M first conductive lines 13 and the N second conductive lines 33 are electrically connected through the pressure-sensitive layer 20 to form M*N sensing points. This design allows for a greater number of deployable pressure sensing points, such as M*N sensing points, which facilitates high-precision acquisition of pressure signals in the area and makes the acquired pressure sensing data more reliable.

[0070] It is understood that when the first conductive line 13 includes the first part 131, the second part 132 and the third part 133, and the second conductive line 33 includes the first segment 331, the second segment 332 and the third segment 333, the first parts 131 of M first conductive lines 13 and the first segments 331 of N second conductive lines 33 are electrically connected through the pressure-sensitive layer 20 to form M*N sensing sites.

[0071] It is understood that when the first conductive layer 10 includes the first insulating wire 12 and the second conductive layer 30 includes the second insulating wire 32, a first conductive wire 13 is wound and fixed to the first carrier 11 by a first insulating wire 12, and a second conductive wire 33 is wound and fixed to the second carrier 31 by a second insulating wire 32; M first conductive wires 13 are electrically connected to N second conductive wires 33 through the stitch gap of the first fixed segment 121 and through the stitch gap d3 of the third fixed segment 321 to form M*N sensing points.

[0072] Understandably, please refer to Figure 7 and combined Figure 4 and Figure 6 When the first conductive wire 13 includes a first portion 131, a second portion 132, and a third portion 133, and the second conductive wire 33 includes a first section 331, a second section 332, and a third section 333, the first portion 131 is wound and fixed to the first carrier 11 by the first fixing section 121. The first portion 131 is electrically connected to the second conductive wire 33 through the stitch gap of the first fixing section 121 and through the stitch gap d3 of the third fixing section 321 to form the sensing point. The third portion 133 is wound and fixed to the first carrier 11 by the second fixing section 122. The second fixing section 122 and the first carrier 11 insulate the third portion 133 and the second conductive wire 33, thereby further reducing the risk of crosstalk generated at non-sensing points. The first segment 331 is wound and fixed to the second carrier 31 by the third fixing segment 321. The first part 131 is electrically connected to the first segment 331 through the stitch gap of the first fixing segment 121 and the first segment 331 through the stitch gap d3 of the third fixing segment 321 to form the sensing point. The third segment 333 is wound and fixed to the second carrier 31 by the fourth fixing segment 322. The second fixing segment 122, the first carrier 11, the fourth fixing segment 322 and the second carrier 31 insulate the third part 133 and the third segment 333, thereby further reducing the risk of crosstalk generated by non-sensing points.

[0073] It is worth noting that in some embodiments, the pressure pad 100 further includes a connecting terminal 40, and the first conductive wire 13 and the second conductive wire 33 are both connected to the connecting terminal 40 to realize the external connection of the first conductive wire 13 and the second conductive wire 33.

[0074] It is worth noting that in some embodiments, the pressure pad 100 further includes a controller 50. The controller 50 is connected to the first conductive line 13 and the second conductive line 33 respectively through the connection terminal 40. The controller 50 is used to receive the sensing signals from the sensing points. When an occupant applies pressure to the pressure pad 100, when a certain area is compressed, the first conductive layer 10 and the second conductive layer 30 move closer to each other in that area. The first conductive line 13 and the second conductive line 33 form an electrical connection at the corresponding sensing point through the pressure-sensitive layer 20, generating a significant electrical signal (e.g., voltage, current, capacitance, resistance, etc.), which can then be displayed on the controller 50 as a signal of pressure in the corresponding area. The signals of pressure at each sensing point constitute the sensing data of the pressure pad 100 regarding pressure distribution. This sensing data can be used for occupant posture analysis, occupant classification, etc.

[0075] It is worth noting that when the number of first conductive lines 13 is M and the number of second conductive lines 33 is N, every 'a' of the first conductive lines 13 converges to form a first main line, and every 'b' of the second conductive lines 33 converges to form a second main line. Both the first and second main lines are connected to the connection terminal 40. This design facilitates centralized signal transmission through the first and second main lines, improving the efficiency and stability of signal transmission.

[0076] In some embodiments, the pressure pad 100 further includes a first protective layer 60a and a second protective layer 70a. The first protective layer 60a is located on the side of the first conductive layer 10 facing away from the pressure-sensitive layer 20, and the second protective layer 70a is located on the side of the second conductive layer 30 facing away from the pressure-sensitive layer 20. This arrangement can achieve protection for the first conductive layer 10, the pressure-sensitive layer 20, and the second conductive layer 30, thereby improving the environmental adaptability of the pressure pad 100.

[0077] In some embodiments, please refer to Figure 8 and Figure 9 The pressure pad 100 further includes a first waterproof layer 60 and a second waterproof layer 70. The first waterproof layer 60 is located on the side of the first conductive layer 10 facing away from the pressure-sensitive layer 20, and the second waterproof layer 70 is located on the side of the second conductive layer 30 facing away from the pressure-sensitive layer 20. With this arrangement, the pressure pad 100 can be waterproofed, thereby improving the pressure pad 100's adaptability to the environment.

[0078] In some embodiments, the pressure pad 100 is further provided with a ventilation hole 100a, which penetrates the first carrier 11, the pressure-sensitive layer 20 and the second carrier 31, and is provided to avoid the first conductive wire 13 and the second conductive wire 33; the first waterproof layer 60 and the second waterproof layer 70 contact each other through the ventilation hole 100a to form a waterproof part 100b; the waterproof part 100b is provided with a vent hole 100c, which is located inside the ventilation hole 100a and is spaced apart from the ventilation hole 100a. This design allows for ventilation through the vent 100c, improving user comfort when using the pressure pad 100. The waterproof portion 100b, located outside the vent 100c and inside the ventilation hole 100a, ensures the pressure pad 100 itself is waterproof, reducing the risk of the first conductive layer 10, pressure-sensitive layer 20, and second conductive layer 30 failing due to water. Therefore, the pressure pad 100 provided in this embodiment has both breathable and waterproof functions, providing a good user experience.

[0079] In some embodiments, the first waterproof layer 60 and the second waterproof layer 70 are both made of thermoplastic polyurethane elastomer, so that the first waterproof layer 60 and the second waterproof layer 70 are heat-fused together through the ventilation hole 100a to form the waterproof part 100b. When forming the pressure pad 100, the first waterproof layer 60, the first conductive layer 10, the pressure-sensitive layer 20, the second conductive layer 30 and the second waterproof layer 70 are first stacked, and then the first waterproof layer 60 and the second waterproof layer 70 are heat-fused together through the ventilation hole 100a by hot pressing to form the waterproof part 100b. Then, a vent hole 100c is formed in the waterproof part 100b, thereby achieving that the pressure pad 100 is both waterproof and breathable.

[0080] It is understood that when the pressure pad 100 includes the first waterproof layer 60 and the second waterproof layer 70, the first conductive layer 10 may not have the first insulating wire 12, and the first conductive wire 13 in the first conductive layer 10 may not have adopted the above-mentioned arrangement including the first portion 131, the second portion 132, and the third portion 133. Similarly, the second conductive layer 30 may not have the second insulating wire 32, and the second conductive wire 33 in the second conductive layer 30 may not have adopted the above-mentioned arrangement including the first segment 331, the second segment 332, and the third segment 333.

[0081] It is worth noting that in some embodiments, the pressure pad 100 further includes a suture 80, which stitches and secures the first waterproof layer 60, the first conductive layer 10, the pressure-sensitive layer 20, the second conductive layer 30, and the second waterproof layer 70. The suture 80 further enhances the connection stability and structural strength between the layers. Specifically, the suture 80 can penetrate the first waterproof layer 60, the first conductive layer 10, the pressure-sensitive layer 20, the second conductive layer 30, and the second waterproof layer 70 along a predetermined path, firmly stitching them together. This stitching method not only helps maintain the relative stability of the layers, preventing displacement or detachment during long-term use, but also effectively improves the overall durability and reliability of the pressure pad 100. Furthermore, the selection and layout of the suture 80 can be adjusted according to actual conditions to minimize the impact on the sensitivity and comfort of the pressure pad 100 while meeting strength requirements.

[0082] For example, in some embodiments, the suture 80 is arranged around M of the first conductive wires 13 and around N of the second conductive wires 33. With this arrangement, the suture 80 not only firmly fixes each layer, but also ensures that when the occupant leaves the pressure pad 100, the arrangement of the suture 80 does not affect the separation of the first conductive layer 10 and the second conductive layer 30, thus ensuring that the pressure pad 100 does not generate sensing data when the occupant leaves the pressure pad 100, thereby improving the reliability and accuracy of the pressure pad 100.

[0083] In some implementations of this application, the pressure pad 100 includes a first conductive layer 10, a pressure-sensitive layer 20, and a second conductive layer 30. The first conductive layer 10 includes a first carrier 11, a first insulating wire 12, and a first conductive wire 13. The first conductive wire 13 is wound and fixed to the first carrier 11 by the first insulating wire 12. The first insulating wire 12 includes a first fixed segment 121 and a second fixed segment 122. The stitch spacing d1 of the first fixed segment 121 is greater than the stitch spacing d2 of the second fixed segment 122. The pressure-sensitive layer 20 is disposed between the first conductive layer 10 and the second conductive layer 30. The first conductive wire 13 located in the first fixed segment 121 is electrically connected to the second conductive layer 30 through the stitch gap of the first fixed segment 121 to form a sensing point. The second fixed segment 122 insulates the first conductive wire 13 and the second conductive layer 30 located in the second fixed segment 122. Through the pressure pad 100, the first insulating wire 12 fixes the first conductive wire 13 to the first carrier 11, thus indirectly improving the connection reliability of the first conductive wire 13 when connected to external devices. Furthermore, the first conductive wire 13 forms a sensing point by electrically communicating with the second conductive layer 30 through the stitch gap of the first fixed segment 121 of the first insulating wire 12, ensuring that the function of the pressure pad 100 is not sacrificed due to the presence of the first insulating wire 12. Equally important, the second fixed segment 122 of the first insulating wire 12 insulates the first conductive wire 13 and the second conductive layer 30, thereby isolating the first conductive wire 13 and the second conductive layer 30 at non-sensing points, reducing the risk of crosstalk and improving the sensitivity of the pressure pad 100. Also importantly, when an occupant applies pressure to the pressure pad 100, the first conductive wire 13 and the second conductive layer 30 contact to form a sensing point, ensuring the function of the pressure pad 100. When the occupant leaves the pressure pad 100, the presence of the first insulating wire 12 provides restoring force, reducing the risk that the pressure pad 100 will still generate sensing data when the occupant leaves.

[0084] In some implementations of this application, the pressure pad 100 includes a first conductive layer 10, a pressure-sensitive layer 20, and a second conductive layer 30. The first conductive layer 10 includes a first carrier 11 and a first conductive line 13. The first conductive line 13 includes a first portion 131, a second portion 132, and a third portion 133 connected together. The first portion 131 is disposed on the side of the first carrier 11 facing the pressure-sensitive layer 20, the second portion 132 penetrates the first carrier 11, and the third portion 133 is disposed on the side of the first carrier 11 facing away from the pressure-sensitive layer 20. The first portion 131 is electrically connected to the second conductive layer 30 through the pressure-sensitive layer 20 to form a sensing point. Through this pressure pad 100, the first portion 131 of the first conductive line 13 is electrically connected to the second conductive layer 30 through the pressure-sensitive layer 20 to form a sensing point. The third portion 133 (non-sensing point) of the first conductive line 13, being disposed on the side of the first carrier 11 facing away from the pressure-sensitive layer 20, reduces the risk of crosstalk at non-sensing points and improves the sensitivity of the pressure pad 100.

[0085] In some implementations of this application, the pressure pad 100 includes a first waterproof layer 60, a first conductive layer 10, a pressure-sensitive layer 20, a second conductive layer 30, and a second waterproof layer 70 stacked sequentially; the first conductive layer 10 includes a first carrier 11 and a first conductive wire 13 disposed on the first carrier 11, the second conductive layer 30 includes a second carrier 31 and a second conductive wire 33 disposed on the second carrier 31, and the first conductive wire 13 and the second conductive layer 30 are electrically connected through the pressure-sensitive layer 20 to form a sensing point; the pressure pad 100 also... A ventilation hole 100a is provided, which penetrates the first carrier 11, the pressure-sensitive layer 20 and the second carrier 31, and avoids the first conductive line 13 and the second conductive line 33; the first waterproof layer 60 and the second waterproof layer 70 contact each other through the ventilation hole 100a to form a waterproof part 100b; the waterproof part 100b is provided with a vent hole 100c, which is located inside the ventilation hole 100a and is spaced apart from the ventilation hole 100a.

[0086] This application also provides a seat comfort system 200, such as Figure 10As shown, the seat comfort system 200 includes the pressure pad 100. The seat comfort system 200 may also include an air bag 201, an air source 202, a control system 203, and a valve body (not shown). The air bag 201 provides support and a comfortable massage experience for the occupant's back, waist, and / or hips and legs. The air bag 201 is connected to the air source 202 via the valve body. The control system 203 is connected to the valve body and is used to control the air source 202 to inflate / deflate the air bag 201 via the valve body. The structure and function of the pressure pad 100 can be referred to in the above embodiments and will not be repeated here.

[0087] Understandably, there can be multiple airbags 201, which can provide support and a comfortable massage experience for the occupant's back, waist and / or hips and legs respectively.

[0088] This application also provides a seat comfort system 200, such as Figure 10 As shown, the seat 1000 includes the seat comfort system 200. The seat 1000 can be installed in any vehicle, or it can be an office chair or a home chair. The seat 1000 also includes a backrest 300 and a seat cushion 400. The backrest 300 is connected to the seat cushion 400. The airbags 201 are distributed in the backrest 300 and / or the seat cushion 400. When an occupant sits on the seat cushion 400, the seat cushion 400 supports the pressure of the occupant's buttocks, and the backrest 300 supports the pressure of the occupant's back, waist, and tailbone from the shoulders down.

[0089] It should be noted that while preferred embodiments of this application are provided in the specification and accompanying drawings, this application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this application; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this application. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this application's specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A pressure pad, characterized in that, include: First conductive layer, pressure-sensitive layer, and second conductive layer; The first conductive layer includes a first carrier, a first insulating wire, and a first conductive wire. The first conductive wire is wound and fixed to the first carrier by the first insulating wire. The first insulating wire includes a first fixed section and a second fixed section. The stitch spacing of the first fixed section is greater than the stitch spacing of the second fixed section. The pressure-sensitive layer is disposed between the first conductive layer and the second conductive layer; When the pressure pad is subjected to external force, at least a portion of the first conductive wire located in the first fixed section passes through the thread gap of the first fixed section and is electrically connected to the second conductive layer through the pressure-sensitive layer to form a sensing point. The second fixed section always separates the first conductive wire in the second fixed section from the pressure-sensitive layer, thereby keeping the first conductive wire in the second fixed section insulated from the second conductive layer.

2. The pressure pad according to claim 1, characterized in that, The second conductive layer includes a second carrier, a second insulating wire, and a second conductive wire. The second conductive wire is wound and fixed to the second carrier by the second insulating wire. The second insulating wire includes a third fixed section and a fourth fixed section. The stitch spacing of the third fixed section is greater than the stitch spacing of the fourth fixed section. When the pressure pad is subjected to external force, at least a portion of the first conductive wire located in the first fixed section passes through the stitch gap of the first fixed section and is electrically connected to at least a portion of the second conductive wire located in the third fixed section through the stitch gap of the third fixed section to form the sensing point. The fourth fixed section always separates the second conductive line from the pressure-sensitive layer, thereby keeping the second conductive line in the fourth fixed section insulated from the first conductive line.

3. The pressure pad according to claim 2, characterized in that, The number of first conductive wires is M, and the M first conductive wires are spaced apart along the first direction. The number of first insulating wires is M, and one first conductive wire is wound and fixed to the first carrier by one first insulating wire. The number of the second conductive wires is N, and the N second conductive wires are spaced apart along the second direction. The number of the second insulating wires is N, and one of the second conductive wires is wrapped and fixed to the second carrier by one of the second insulating wires. M first conductive lines are electrically connected through the stitch gaps of the first fixed segment and N second conductive lines are electrically connected through the stitch gaps of the third fixed segment to form M*N sensing points.

4. The pressure pad of claim 3, wherein, The pressure pad also includes a connecting terminal, and both the first conductive wire and the second conductive wire are connected to the connecting terminal.

5. The pressure pad of claim 2, wherein, The stitch spacing of the first fixed segment is between 1.5 mm and 2.5 mm, and the stitch spacing of the second fixed segment is less than or equal to 0.5 mm; And / or, The stitch spacing of the third fixed segment is between 1.5 mm and 2.5 mm, and the stitch spacing of the fourth fixed segment is less than or equal to 0.5 mm.

6. The pressure pad of any of claims 2-5, wherein, The first conductive line includes a first part, a second part, and a third part connected together. The first part is disposed on the side of the first carrier facing the pressure-sensitive layer, the second part passes through the first carrier, and the third part is disposed on the side of the first carrier away from the pressure-sensitive layer. The first part is wound and fixed to the first carrier by the first fixing segment, and the first part is electrically connected to the second conductive line through the stitch gap of the first fixing segment and through the stitch gap of the third fixing segment to form the sensing point; The third part is wound and fixed to the first carrier by the second fixing segment, and the second fixing segment and the first carrier insulate the third part and the second conductive wire.

7. The pressure pad of claim 6, wherein, The second conductive line includes a first segment, a second segment, and a third segment connected together. The first segment is disposed on the side of the second carrier facing the pressure-sensitive layer, the second segment penetrates the second carrier, and the third segment is disposed on the side of the second carrier facing away from the pressure-sensitive layer. The first section is wound and fixed to the second carrier by the third fixing section, and the first part is electrically connected to the first section through the stitch gap of the first fixing section and the first section through the stitch gap of the third fixing section to form the sensing point; The third section is wound and fixed to the second carrier by the fourth fixing section, and the second fixing section and the fourth fixing section insulate the third part and the third section.

8. The pressure pad of any of claims 2-5, wherein, The pressure pad is also provided with ventilation holes, which penetrate the first carrier, the pressure-sensitive layer and the second carrier, and are arranged to avoid the first conductive wire and the second conductive wire; The pressure pad further includes a first waterproof layer and a second waterproof layer. The first waterproof layer is located on the side of the first conductive layer that is opposite to the pressure-sensitive layer, and the second waterproof layer is located on the side of the second conductive layer that is opposite to the pressure-sensitive layer. The first waterproof layer and the second waterproof layer are in contact through the ventilation hole to form a waterproof part. The waterproof part is provided with a vent hole, which is located inside the ventilation hole and is spaced apart from the ventilation hole.

9. A seat comfort system characterized by, Includes the pressure pad as described in any one of claims 1-8.

10. A seat, characterized by Includes the seating comfort system as described in claim 9.

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