Pressure pad, seat comfort system and seat

Abstract

The embodiment of the invention relates to a pressure pad, a seat comfort system and a seat. The pressure pad comprises a first conductive layer, a pressure-sensitive layer and a second conductive layer, the first conductive layer comprises a first carrier, a first insulated wire and a first conductive wire, the first conductive wire is wound and fixed on the first carrier by the first insulated wire, the first insulated wire comprises a first fixed section and a second fixed section, and the stitch interval of the first fixed section is larger than that of the second fixed section; when the pressure pad is subjected to external force, at least one part of the first conductive wire located in the first fixing section penetrates through the stitch gap of the first fixing section to be electrically communicated with the second conductive layer to form an induction site, and the second fixing section always separates the first conductive wire in the second fixing section from the pressure-sensitive layer. Therefore, the first conductive wire in the second fixed section is insulated from the second conductive layer, and the function of the pressure pad is not sacrificed due to the arrangement of the first insulated wire. In addition, at the non-sensing site, the first conductive line and the second conductive layer are insulated, and crosstalk is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of seats, and in particular to a pressure pad, a seat comfort system, and a seat. Background Art

[0002] In existing technology, vehicle seat cushions are typically equipped with pressure pads. These pads detect changes in capacitance or resistance at several sensing points to determine the pressure applied to the pad's surface. This allows the user to adjust their posture, whether sitting, standing, or lying down. When pressure is applied to a specific area of ​​the pad, the sensing points in that area produce a noticeable electrical signal change, thus enabling pressure detection.

[0003] The pressure pad includes two conductive layers, one with horizontal conductive lines and the other with vertical conductive lines. Both the horizontal and vertical conductive lines are connected to a printed circuit board (PCB) control mainboard via an FPC (Flexible Printed Circuit). Conventional technology connects the conductive lines to the FPC by connecting wires (e.g., gold fingers) on the FPC to the conductive lines.

[0004] However, the contact connection method between the wires on the flexible circuit board and the conductive wires, such as bonding or direct welding, is prone to disconnection due to stress, that is, the connection reliability between the two is poor and the stability of the pressure pad is poor.

[0005] Later, there was an improvement in that the conductive thread was sewn to the conductive layer through an insulating thread, thereby indirectly improving the connection reliability between the wires on the flexible circuit board and the conductive thread.

[0006] However, in the process of realizing the present application, the applicant of the present application discovered that: currently, the conductive wires in the two conductive layers are electrically connected through the trace gaps of the insulating wires at the sensing site, however, the conductive wires in the two conductive layers at the non-sensing site will generate crosstalk through the trace gaps of the insulating wires and the pressure-sensitive layer. Summary of the Invention

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

[0008] According to one aspect of an embodiment of the present application, a pressure pad is provided, comprising a first conductive layer, a pressure-sensitive layer, and a second conductive layer; the first conductive layer comprises 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 comprising a first fixed segment and a second fixed segment, the trace spacing of the first fixed segment being greater than the trace spacing of the second fixed segment; the pressure-sensitive layer is arranged 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 trace gap of the first fixed segment and is electrically connected to the second conductive layer through the pressure-sensitive layer to form a sensing site, and the second fixed segment always separates the first conductive wire in the second fixed segment from the pressure-sensitive layer, so that the first conductive wire in the second fixed segment remains insulated from the second conductive layer.

[0009] In an optional manner, the second conductive layer includes a second carrier, a second insulating wire and a second conductive wire, the second conductive wire is wound around the second insulating wire and fixed to the second carrier, the second insulating wire includes a third fixed segment and a fourth fixed segment, the trace spacing of the third fixed segment is greater than the trace 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 trace gap of the first fixed segment through the pressure-sensitive layer and is electrically connected to at least a portion of the second conductive wire located in the third fixed segment through the trace gap of the third fixed segment to form the sensing site; the fourth fixed segment always separates the second conductive wire and the pressure-sensitive layer, so that the second conductive wire in the fourth fixed end remains insulated from the first conductive wire.

[0010] In an optional manner, the number of the first conductive wires is M, the M first conductive wires are arranged at intervals along the first direction, the number of the first insulating wires is M, and one first conductive wire is wound around and fixed to the first carrier by one first insulating wire; the number of the second conductive wires is N, the N second conductive wires are arranged at intervals along the second direction, the number of the second insulating wires is N, and one second conductive wire is wound around and fixed to the second carrier by one second insulating wire; the M first conductive wires are electrically connected through the trace gaps of the first fixed segment and the N second conductive wires through the trace gaps of the third fixed segment to form M*N sensing sites.

[0011] In an optional manner, the pressure pad further includes a connecting terminal, and the first conductive line and the second conductive line are both connected to the connecting terminal.

[0012] In an optional embodiment, the stitch spacing of the first fixed segment is between 1.5 mm and at least 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 at least 2.5 mm, and the stitch spacing of the fourth fixed segment is less than or equal to 0.5 mm.

[0013] In an optional manner, the first conductive wire includes a first part, a second part and a third part that are connected, the first part is arranged 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 arranged on the side of the first carrier facing away from the pressure-sensitive layer; the first part is wrapped around and fixed to the first carrier by the first fixed segment, and the first part is electrically connected to the second conductive wire through the trace gap of the first fixed segment through the trace gap of the third fixed segment to form the sensing site; the third part is wrapped around and fixed to the first carrier by the second fixed segment, and the second fixed segment and the first carrier insulate the third part and the second conductive wire.

[0014] In an optional manner, the second conductive wire includes a connected first segment, a second segment and a third segment, the first segment is arranged on the side of the second carrier facing the pressure-sensitive layer, the second segment passes through the second carrier, and the third segment is arranged on the side of the second carrier facing away from the pressure-sensitive layer; the first segment is wrapped and fixed to the second carrier by the third fixed segment, and the first part is electrically connected to the first segment through the trace gap of the first fixed segment through the trace gap of the third fixed segment to form the sensing site; the third segment is wrapped and fixed to the second carrier by the fourth fixed segment, and the second fixed segment and the fourth fixed segment insulate the third part and the third segment.

[0015] In an optional manner, the pressure pad is further provided with ventilation holes, which pass through the first carrier, the pressure-sensitive layer and the second carrier, and are provided to avoid the first conductive line and the second conductive line; 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, and the first waterproof layer and the second waterproof layer are in contact through the ventilation holes to form a waterproof part; the waterproof part is provided with air holes, which are located inside the ventilation holes, and the air holes are spaced apart from the ventilation holes.

[0016] According to one aspect of an embodiment of the present application, a seat comfort system is provided, comprising the pressure pad.

[0017] According to one aspect of an embodiment of the present application, a seat is provided, comprising the seat comfort system.

[0018] The beneficial effects of the embodiments of the present application are as follows: a pressure pad is provided, comprising a first conductive layer, a pressure-sensitive layer, and a second conductive layer; the first conductive layer comprises a first carrier, a first insulating wire, and a first conductive wire, the first conductive wire being wound around the first insulating wire and fixed to the first carrier, the first insulating wire comprising a first fixed segment and a second fixed segment, the trace spacing of the first fixed segment being greater than the trace spacing of the second fixed segment; the pressure-sensitive layer being 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 within the first fixed segment passes through the trace gap of the first fixed segment and is electrically connected to the second conductive layer through the pressure-sensitive layer to form a sensing site, the second fixed segment always separating the first conductive wire within the second fixed segment from the pressure-sensitive layer, thereby maintaining insulation between the first conductive wire within the second fixed segment and the second conductive layer. Through this pressure pad, the first insulating wire secures the first conductive wire to the first carrier, thereby indirectly improving the connection reliability of the first conductive wire when subsequently connected to an external device.

[0019] In addition, the first conductive wire is electrically connected to the second conductive layer through the trace gap of the first fixed section of the first insulating wire to form a sensing site, and the function of the pressure pad is not sacrificed due to the provision of the first insulating wire.

[0020] It is also important that the second fixed section of the first insulating wire insulates the first conductive wire and the second conductive layer, so that at non-sensing locations, the first conductive wire and the second conductive layer are insulated, reducing the risk of crosstalk and improving the sensitivity of the pressure pad.

[0021] Equally importantly, when the occupant applies pressure to the pressure pad, the first conductive line contacts the second conductive layer to form a sensing site, thereby ensuring the functionality of the pressure pad. Furthermore, when the occupant leaves the pressure pad, the presence of the first insulating line provides a restoring force, thereby reducing the risk of the pressure pad still generating sensing data when the occupant leaves the pressure pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0023] Figure 1 is a schematic diagram of an implementation of a pressure pad provided in an embodiment of the present application; Figure 2 is an exploded schematic diagram of an implementation of a pressure pad provided in an embodiment of the present application; Figure 3 is a wireframe diagram of one implementation of the pressure pad provided in an embodiment of the present application; Figure 4 is a cross-sectional view of an implementation of the first conductive layer provided in an embodiment of the present application; Figure 5 is an exploded schematic diagram of another implementation of the pressure pad provided in an embodiment of the present application; Figure 6 This is a cross-sectional view of an implementation of the second conductive layer provided in an embodiment of the present application; Figure 7 is an exploded schematic diagram of another implementation of the pressure pad provided in an embodiment of the present application; Figure 8 is a schematic diagram of another implementation of the pressure pad provided in an embodiment of the present application; Figure 9 is an exploded schematic diagram of another implementation of the pressure pad provided in an embodiment of the present application; Figure 10 It is a schematic diagram of a seat provided in an embodiment of the present application.

[0024] The reference numerals in the accompanying drawings are as follows: 100. Pressure pad; 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; 100a, ventilation hole; 100b, waterproof part; 100c, air vent; 11. First carrier; 12. First insulating wire; 13. First conductive wire; 121, first fixed section; 122, second fixed section; d1, stitch spacing of the first fixed section; d2, stitch spacing of the second fixed section; 131. Part 1; 132. Part 2; 133. Part 3; 31. Second carrier; 32. Second insulating wire; 33. Second conductive wire; 321, third fixed section; 322, fourth fixed section; d3, stitch gap of the third fixed section; d4, stitch gap of the fourth fixed section; 331, first section; 332, second section; 333, third section; 200, Seat Comfort System; 201. Air bag; 202. Air source; 203. Control system; 1000, seat; 300, backrest; 400, cushion. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present application, the present application is described in more detail 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 on the other element, or one or more centered elements can 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 centered elements can exist between them. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the relevant listed items.

[0027] See also 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. 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 via the pressure-sensitive layer 20 to form a sensing site. The sensing site is used to generate an electrical signal change, thereby enabling the pressure pad 100 to detect pressure.

[0028] For the above-mentioned first conductive layer 10, 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 wrapped 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, and the trace spacing d1 of the first fixed segment 121 is greater than the trace spacing d2 of the second fixed segment 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 segment 121 passes through the trace gap of the first fixed segment 121 and is electrically connected to the second conductive layer 30 through the pressure-sensitive layer 20 to form a sensing site, and the second fixed segment 122 always separates the first conductive wire 13 in the second fixed segment 122 from the pressure-sensitive layer 20, so that the first conductive wire 13 in the second fixed segment 122 remains 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, and the connection reliability of the first conductive wire 13 when subsequently connected to an external device is indirectly improved. In addition, at least a portion of the first conductive wire 13 is electrically connected to the second conductive layer 30 through the trace gap of the first fixed section 121 of the first insulating wire 12 to form a sensing site, and the function of the pressure pad 100 is not sacrificed due to the provision of the first insulating wire 12. Equally important, the second fixed section 122 of the first insulating wire 12 separates the first conductive wire 13 and the pressure-sensitive layer 20 within the second fixed section 122, insulating the first conductive wire 13 and the second conductive layer 30. Therefore, at non-sensing sites, 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. It is also important to note that when the occupant applies pressure to the pressure pad 100 , the first conductive line 13 and the second conductive layer 30 contact to form a sensing site, thereby ensuring the functionality of the pressure pad 100 . When the occupant leaves the pressure pad 100 , the presence of the first insulating line 12 provides a restoring force, thereby reducing the risk of the pressure pad 100 still generating sensing data when the occupant leaves the pressure pad 100 .

[0029] It is worth noting that, in some embodiments, the stitch spacing d1 of the first fixing section 121 is between 1.5 mm and at least 2.5 mm, and the stitch spacing d2 of the second fixing section 122 is less than or equal to 0.5 mm.

[0030] It is worth noting that, in some embodiments, the first insulating wire 12 is wound around the first conductive wire 13 and fixed to the first carrier 11 by sewing.

[0031] The stitch spacing is the distance between two adjacent stitches, and the stitch gap is the space between two adjacent stitches.

[0032] It is worth noting that, in some embodiments, the first carrier 11 is a woven fabric layer.

[0033] It is worth noting that, in some embodiments, the number of the first fixed segments 121 is multiple, so that the first conductive wires 13 in the multiple first fixed segments 121 all pass through the trace gaps of the first fixed segments 121 and the pressure-sensitive layer 20, thereby being electrically connected to the second conductive layer 30 to form multiple sensing sites.

[0034] It can be understood that when the number of the first fixing segments 121 is multiple, the number of the second fixing segments 122 is multiple, and the number of the second fixing segments 122 and the number of the first fixing segments 121 can be the same or different. For example, the number of the second fixing segments 122 is one more than the number of the first fixing segments 121, or the number of the second fixing segments 122 is one less than the number of the first fixing segments 121.

[0035] It is worth noting that, in some embodiments, see Figure 4 and Figure 5 The first conductive line 13 includes a connected first portion 131, a second portion 132, and a third portion 133. 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 electrically connects to the second conductive layer 30 through the pressure-sensitive layer 20, forming a sensing site. Specifically, the first portion 131 electrically connects to the second conductive layer 30 through the trace gaps of the first fixing section 121 and the pressure-sensitive layer 20, thereby forming the sensing site. With this pressure pad 100, the first portion 131 of the first conductive line 13 electrically connects to the second conductive layer 30 through the pressure-sensitive layer 20, forming a sensing site, ensuring the functionality of the pressure pad 100. The third portion 133 (non-sensing site) of the first conductive line 13, disposed on the side of the first carrier 11 facing away from the pressure-sensitive layer 20, reduces the risk of crosstalk from the non-sensing site and improves the sensitivity of the pressure pad 100.

[0036] It is worth noting that the number of first portions 131 can be multiple, so as to be electrically connected to the second conductive layer 30 to form multiple sensing sites. It is understood that when the number of first portions 131 is multiple, the number of second portions 132 is also multiple, and the number of third portions 133 is also multiple; 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.

[0037] It is understandable that when the first conductive line 13 includes a connected first part 131, a second part 132 and a third part 133, the first insulating line 12 may not be provided, which can also reduce the risk of crosstalk at non-sensing points and improve the sensitivity of the pressure pad 100.

[0038] The pressure-sensitive layer 20 is a material layer with pressure-responsive characteristics. When subjected to external force, its resistance value will change. In this embodiment, the material of the pressure-sensitive layer 20 can be a polyimide film, which has good flexibility and pressure-responsive characteristics and can effectively convert pressure changes into electrical signal changes. The pressure-sensitive layer 20 is arranged 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 will deform, resulting in 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 site and generating an electrical signal change. This electrical signal change can be collected and converted into a digital signal, thereby achieving accurate detection of pressure.

[0039] For the above-mentioned second conductive layer 30, 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 fixed segment 321 and a fourth fixed segment 322, and the trace spacing of the third fixed segment 321 is greater than the trace spacing of the fourth fixed 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 fixed segment 121 passes through the trace gap of the first fixed segment 121 and passes through the pressure-sensitive layer 20 to be electrically connected with at least a portion of the second conductive wire 33 located in the third fixed segment 321 through the trace gap of the third fixed segment 321 to form the sensing site; the fourth fixed segment 322 always separates the second conductive wire 33 and the pressure-sensitive layer 20, so that the second conductive wire 33 in the fourth fixed end 322 remains insulated from the first conductive wire 13. Through this arrangement, the second insulating wire 32 secures the second conductive wire 33 to the second carrier 31, indirectly improving the connection reliability of the second conductive wire 33 when subsequently connected to an external device. Furthermore, the first conductive wire 13, through the trace gap of the first fixed segment 121 of the first insulating wire 12, is electrically connected to the second conductive wire 33, through the trace gap d3 of the third fixed segment 321 of the second insulating wire 32, to form a sensing site. The function of the pressure pad 100 is not compromised by the arrangement 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. This insulates the first conductive wire 13 from the second conductive wire 33 at non-sensing sites, reducing the risk of crosstalk and further enhancing the sensitivity of the pressure pad 100. It is also important to note that when the occupant acts on the pressure pad 100, the first conductive wire 13 contacts through the trace gap of the first fixed section 121 of the first insulating wire 12 and the second conductive wire 33 contacts through the trace gap d3 of the third fixed section 321 of the second insulating wire 32 to form a sensing site, thereby ensuring the functionality of the pressure pad 100. When the occupant leaves the pressure pad 100, the presence of the first insulating wire 12 and the second insulating wire 32 provides a restoring force, thereby further reducing the risk that the pressure pad 100 still generates sensing data when the occupant leaves the pressure pad 100.

[0040] It is worth noting that, in some embodiments, the stitch spacing d3 of the third fixing section 321 is between 1.5 mm and at least 2.5 mm, and the stitch spacing d4 of the fourth fixing section 322 is less than or equal to 0.5 mm.

[0041] It is worth noting that, in some embodiments, the second insulating wire 32 is wound around the second conductive wire 33 and fixed to the second carrier 31 by sewing.

[0042] It is worth noting that, in some embodiments, the second carrier 31 is a woven fabric layer.

[0043] It is worth noting that, in some embodiments, there are multiple third fixed segments 321, so that the second conductive wires 33 in multiple third fixed segments 321 all pass through the trace gap d3 of the third fixed segment 321 and the pressure-sensitive layer 20, thereby being electrically connected with the first conductive wire 13 through the trace gap of the first fixed segment 121 to form multiple sensing sites.

[0044] It can be understood that when the number of the third fixing segments 321 is multiple, the number of the fourth fixing segments 322 is multiple, and the number of the fourth fixing segments 322 and the number of the third fixing segments 321 can be the same or different. For example, the number of the fourth fixing segments 322 is one more than the number of the third fixing segments 321, or the number of the fourth fixing segments 322 is one less than the number of the third fixing segments 321.

[0045] It is worth noting that, in some embodiments, see Figure 5 and Figure 6 The second conductive line 33 includes a first segment 331, a second segment 332, and a third segment 333. 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 site. Specifically, the first portion 131 of the first conductive line 13 passes through the trace gap of the first fixed segment 121 and the pressure-sensitive layer 20, thereby electrically connecting to the first segment 331 of the second conductive line 33 through the trace gap d3 of the third fixed segment 321 to form the sensing site. 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 site, thereby ensuring the function of the pressure pad 100. The third part 133 (non-sensing site) of the first conductive line 13 is arranged on the side of the first carrier 11 facing away from the pressure-sensitive layer 20, and the third section 333 (non-sensing site) of the second conductive line 33 is arranged on the side of the second carrier 31 facing away from the pressure-sensitive layer 20, thereby reducing the risk of crosstalk at the non-sensing site and improving the sensitivity of the pressure pad 100.

[0046] It is worth noting that the number of first segments 331 can be multiple, thereby electrically connecting with the second conductive layer 30 to form multiple sensing sites. It is understood that when the number of first segments 331 is multiple, the number of second segments 332 is also multiple, and the number of third segments 333 is also multiple; 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, the second segments 332, and the third segments 333 are connected to form a continuous second conductive line 33.

[0047] It can be understood that when the second conductive wire 33 includes a connected first segment 331, a second segment 332 and a third segment 333, the second insulating wire 32 may not be provided, and the technical effect of reducing the risk of crosstalk at non-sensing points and improving the sensitivity of the pressure pad 100 can also be achieved.

[0048] Regarding the first conductive lines 13 and the second conductive lines 33, in some embodiments, there are M first conductive lines 13, with the M first conductive lines 13 spaced apart along the first direction; there are N second conductive lines 33, with the N second conductive lines 33 spaced apart along the second direction; the M first conductive lines 13 and the N second conductive lines 33 are electrically connected via the pressure-sensitive layer 20 to form M*N sensing sites. This design allows for more pressure-sensitive sites to be arranged, such as M*N sensing sites, facilitating high-precision acquisition of regional pressure electrical signals and ensuring more reliable pressure sensing data.

[0049] It can be 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 the M first conductive lines 13 and the first segments 331 of the N second conductive lines 33 are electrically connected through the pressure-sensitive layer 20 to form M*N sensing sites.

[0050] It can be 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 through the trace gap of the first fixed segment 121 and N second conductive wires 33 through the trace gap d3 of the third fixed segment 321 to form M*N sensing sites.

[0051] Understandably, see Figure 7 Combined with Figure 4 and Figure 6 When the first conductive wire 13 includes the first part 131, the second part 132 and the third part 133, and the second conductive wire 33 includes the first segment 331, the second segment 332 and the third segment 333, the first part 131 is wrapped around and fixed to the first carrier 11 by the first fixing segment 121, and the first part 131 is electrically connected to the second conductive wire 33 through the trace gap d3 of the third fixing segment 321 through the trace gap of the first fixing segment 121 to form the sensing site; the third part 133 is wrapped around and fixed to the first carrier 11 by the second fixing segment 122, and the second fixing segment 122 and the first carrier 11 insulate the third part 133 and the second conductive wire 33, thereby further reducing the risk of crosstalk generated at non-sensing sites. The first section 331 is wrapped and fixed to the second carrier 31 by the third fixed section 321, and the first part 131 is electrically connected to the first section 331 through the trace gap d3 of the third fixed section 321 through the trace gap of the first fixed section 121 to form the sensing site; the third section 333 is wrapped and fixed to the second carrier 31 by the fourth fixed section 322, and the second fixed section 122, the first carrier 11, the fourth fixed section 322 and the second carrier 31 insulate the third part 133 and the third section 333, thereby further reducing the risk of crosstalk generated at non-sensing sites.

[0052] It is worth noting that, in some embodiments, the pressure pad 100 further includes a connection terminal 40 , and the first conductive line 13 and the second conductive line 33 are both connected to the connection terminal 40 , thereby connecting the first conductive line 13 and the second conductive line 33 to an external connection.

[0053] It is worth noting that, in some embodiments, the pressure pad 100 further includes a controller 50, which is connected to the first conductive wire 13 and the second conductive wire 33 respectively through the connecting terminal 40, and the controller 50 is used to receive the sensing signal of the sensing site. When the occupant acts on the pressure pad 100, when a certain area is pressurized, the first conductive layer 10 and the second conductive layer 30 approach each other in this area, and the first conductive wire 13 and the second conductive wire 33 contact each other through the pressure-sensitive layer 20 at the corresponding sensing site to form electrical conduction, generating obvious electrical signals (such as voltage, current, capacitance, resistance, etc.), which can then be displayed on the controller 50 as a signal of the corresponding area being pressurized. The signals of the pressure at each sensing site constitute the sensing data of the pressure pad 100 regarding the pressure distribution. This sensing data can be used for occupant posture analysis, occupant classification, etc.

[0054] It is worth noting that when the number of the first conductive lines 13 is M and the number of the second conductive lines 33 is N, every a first conductive lines 13 converge to form a first main line, and every b second conductive lines 33 converge to form a second main line. Both the first main line and the second main line are connected to the connection terminal 40. This design facilitates centralized signal transmission via the first and second main lines, improving the efficiency and stability of signal transmission.

[0055] In some embodiments, the pressure pad 100 also 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. Through this setting, protection of the first conductive layer 10, the pressure-sensitive layer 20 and the second conductive layer 30 can be achieved, thereby improving the adaptability of the pressure pad 100 to the environment.

[0056] In some embodiments, see Figure 8 and Figure 9 The pressure pad 100 also 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. Through this arrangement, the pressure pad 100 can be waterproof and the adaptability of the pressure pad 100 to the environment can be improved.

[0057] In some embodiments, the pressure pad 100 is further provided with a ventilation hole 100a, which passes through the first carrier 11, the pressure-sensitive layer 20 and the second carrier 31, and the ventilation hole 100a is provided to avoid the first conductive line 13 and the second conductive line 33; the first waterproof layer 60 and the second waterproof layer 70 are in contact through the ventilation hole 100a to form a waterproof part 100b; the waterproof part 100b is provided with an air hole 100c, and the air hole 100c is located in the ventilation hole 100a, and the air hole 100c is spaced apart from the ventilation hole 100a. Through this arrangement, air is allowed to pass through the air holes 100c, thereby improving the comfort of users when using the pressure pad 100. By setting the waterproof part 100b outside the air holes 100c and inside the ventilation holes 100a, the pressure pad 100 itself is made waterproof, reducing the risk of the first conductive layer 10, the pressure-sensitive layer 20 and the second conductive layer 30 in the pressure pad 100 failing due to water. That is, the pressure pad 100 provided in the embodiment of the present application has the dual functions of air permeability and waterproofness, and the user experience is good.

[0058] 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 holes 100a to form the waterproof portion 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. The first waterproof layer 60 and the second waterproof layer 70 are then heat-fused together through the ventilation holes 100a to form the waterproof portion 100b through hot pressing. Then, air holes 100c are formed in the waterproof portion 100b, thereby achieving both waterproof and breathable pressure pad 100.

[0059] 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 include the first insulating wire 12, and the first conductive wire 13 in the first conductive layer 10 may not adopt the aforementioned structure including the first portion 131, the second portion 132, and the third portion 133. Similarly, the second conductive layer 30 may not include the second insulating wire 32, and the second conductive wire 33 in the second conductive layer 30 may not adopt the aforementioned structure including the first segment 331, the second segment 332, and the third segment 333.

[0060] It is worth noting that, in some embodiments, the pressure pad 100 further includes a suture 80, which sutures and fixes 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. By setting the suture 80, the connection stability and structural strength between the layers can be further enhanced. 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 preset path, and sew them together firmly. Such a suturing method not only helps to maintain the relative position stability between the layers and prevent displacement or falling off during long-term use, but also effectively improves the overall durability and reliability of the pressure pad 100. In addition, the selection and layout of the suture 80 can also be adjusted according to actual conditions to minimize the impact on the sensitivity and comfort of the pressure pad 100 while meeting the strength requirements.

[0061] For example, in some embodiments, the stitching line 80 is arranged around M first conductive lines 13, and the stitching line 80 is arranged around N second conductive lines 33. Through this arrangement, the stitching line 80 not only firmly fixes each layer, but also when the occupant leaves the pressure pad 100, the setting of the stitching line 80 does not affect the first conductive layer 10 and the second conductive layer 30 from recovering to a separated state, thereby 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.

[0062] In some implementations of the present 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 trace spacing d1 of the first fixed segment 121 is greater than the trace spacing d2 of the second fixed segment 122; the pressure-sensitive layer 20 is arranged 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 trace gap of the first fixed segment 121 to form a sensing site, and the second fixed segment 122 insulates the first conductive wire 13 and the second conductive layer 30 located in the second fixed segment 122. In this pressure pad 100, the first insulating wire 12 secures the first conductive wire 13 to the first carrier 11, indirectly improving the reliability of the connection when the first conductive wire 13 is subsequently connected to an external device. Furthermore, the first conductive wire 13 electrically connects to the second conductive layer 30 through the gaps in the traces of the first fixing segment 121 of the first insulating wire 12, forming a sensing site. The presence of the first insulating wire 12 does not compromise the functionality of the pressure pad 100. Equally important, the second fixing segment 122 of the first insulating wire 12 insulates the first conductive wire 13 from the second conductive layer 30. This insulates the first conductive wire 13 from the second conductive layer 30 at non-sensing sites, reducing the risk of crosstalk and improving the sensitivity of the pressure pad 100. Equally important, 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 site, ensuring the functionality of the pressure pad 100. Furthermore, when the occupant leaves the pressure pad 100, the presence of the first insulating wire 12 provides a restorative force, reducing the risk of the pressure pad 100 still generating sensing data.

[0063] In some implementations of the present application, a 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. The first portion 131 is disposed on the side of the first carrier 11 facing the pressure-sensitive layer 20, the second portion 132 extends through 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 site. With 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 site. Since the third portion 133 of the first conductive line 13 is disposed on the side of the first carrier 11 facing away from the pressure-sensitive layer 20, the risk of crosstalk from the non-sensing site is reduced, thereby improving the sensitivity of the pressure pad 100.

[0064] In some implementations of the present 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 in sequence; 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, the first conductive wire 13 and the second conductive layer 30 are electrically connected through the pressure-sensitive layer 20 to form a sensing site; the pressure pad 100 also includes a first conductive layer 10 and a second conductive layer 10 disposed on the first carrier 11; the first conductive layer 10 includes a first conductive layer 11 and a first conductive wire 13 disposed on the second carrier 31; the first conductive wire 13 and the second conductive layer 30 are electrically connected to form a sensing site through the pressure-sensitive layer 20; A ventilation hole 100a is provided, and the ventilation hole 100a passes through the first carrier 11, the pressure-sensitive layer 20 and the second carrier 31, and the ventilation hole 100a is provided to avoid the first conductive line 13 and the second conductive line 33; the first waterproof layer 60 and the second waterproof layer 70 are in contact through the ventilation hole 100a to form a waterproof part 100b; the waterproof part 100b is provided with an air hole 100c, and the air hole 100c is located in the ventilation hole 100a, and the air hole 100c is spaced apart from the ventilation hole 100a.

[0065] The present 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 is used to provide support and a comfortable massage experience for the occupant's back, waist, and / or buttocks and legs. The air bag 201 is connected to the air source 202 via the valve body, and the control system 203 is connected to the valve body. The control system 203 is used to control the air source 202 through the valve body to inflate and deflate the air bag 201. The structure and function of the pressure pad 100 can be referred to the above embodiment and will not be repeated here.

[0066] It is understandable that there can be multiple air bags 201, so as to provide support and a comfortable massage experience to the occupant's back, waist and / or hips and legs respectively.

[0067] The present application also provides a seat comfort system 200, such as Figure 10 As shown, seat 1000 includes the seat comfort system 200. Seat 1000 can be installed in any vehicle, or it can be an office chair or a home chair. 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 on the backrest 300 and / or the seat cushion 400. When an occupant sits on the seat cushion 400, the seat cushion 400 is used to bear the pressure of the occupant's buttocks, and the backrest 300 is used to bear the pressure of the occupant's back below the shoulders and from the waist to the coccyx.

[0068] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of this application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments are not intended to be additional limitations on the content of this application. The purpose of providing these embodiments is to make the understanding of the disclosure of this application more thorough and comprehensive. In addition, the above-mentioned technical features can be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the description of this application; further, it is obvious to those skilled in the art that improvements or changes can be made based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A pressure pad, characterized in that: include: 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 around the first insulating wire and fixed to the first carrier. The first insulating wire includes a first fixed segment and a second fixed segment. The trace spacing of the first fixed segment is greater than the trace 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 trace gap of the first fixed segment and is electrically connected to the second conductive layer through the pressure-sensitive layer to form a sensing site. The second fixed segment always separates the first conductive wire in the second fixed segment from the pressure-sensitive layer, so that the first conductive wire in the second fixed segment remains insulated from the second conductive layer.

2. The pressure pad according to claim 1, wherein The second conductive layer includes a second carrier, a second insulating wire, and a second conductive wire, wherein the second conductive wire is wound around the second insulating wire and fixed to the second carrier, the second insulating wire includes a third fixing segment and a fourth fixing segment, and the trace spacing of the third fixing segment is greater than the trace spacing of the fourth fixing segment; When the pressure pad is subjected to an external force, at least a portion of the first conductive line in the first fixed segment passes through the trace gap of the first fixed segment through the pressure-sensitive layer and is electrically connected to at least a portion of the second conductive line in the third fixed segment through the trace gap of the third fixed segment to form the sensing site; The fourth fixed section always separates the second conductive wire from the pressure-sensitive layer, so that the second conductive wire in the fourth fixed end is insulated from the first conductive wire.

3. The pressure pad according to claim 2, wherein: The number of the first conductive wires is M, and the M first conductive wires are spaced apart along the first direction. The number of the first insulating wires is M, and one first conductive wire is wound around the first insulating wire and fixed to the first carrier. 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 second conductive wire is wound around one second insulating wire and fixed to the second carrier. The M first conductive lines are electrically connected through the trace gaps of the first fixed segment and the N second conductive lines are electrically connected through the trace gaps of the third fixed segment to form M*N sensing sites.

4. The pressure pad according to claim 3, wherein: The pressure pad further includes a connection terminal, and both the first conductive line and the second conductive line are connected to the connection terminal.

5. The pressure pad according to claim 2, wherein: The stitch spacing of the first fixing section is between 1.5 mm and at least 2.5 mm, and the stitch spacing of the second fixing section is less than or equal to 0.5 mm; and / or, The stitch spacing of the third fixing section is between 1.5 mm and at least 2.5 mm, and the stitch spacing of the fourth fixing section is less than or equal to 0.5 mm.

6. The pressure pad according to any one of claims 2 to 5, characterized in that: The first conductive line includes a first portion, a second portion, and a third portion that are connected, the first portion being disposed on a side of the first carrier facing the pressure-sensitive layer, the second portion penetrating the first carrier, and the third portion being disposed on a side of the first carrier facing away from the pressure-sensitive layer; The first portion is wound around the first carrier by the first fixing segment, and the first portion is electrically connected to the second conductive wire through the trace gap of the first fixing segment through the trace gap of the third fixing segment to form the sensing site; The third portion is wound and fixed to the first carrier by the second fixing section. The second fixing section and the first carrier insulate the third portion and the second conductive wire.

7. The pressure pad according to claim 6, wherein: The second conductive line includes a first segment, a second segment, and a third segment connected to each other, the first segment being disposed on a side of the second carrier facing the pressure-sensitive layer, the second segment penetrating the second carrier, and the third segment being disposed on a side of the second carrier facing away from the pressure-sensitive layer; The first section is wound around the third fixing section and fixed to the second carrier, and the first portion is electrically connected to the first section through the trace gap of the first fixing section through the trace gap of the third fixing section to form the sensing site; 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 portion and the third section.

8. The pressure pad according to any one of claims 2 to 5, characterized in that: The pressure pad is further provided with a ventilation hole, the ventilation hole passes through the first carrier, the pressure-sensitive layer and the second carrier, and the ventilation hole is provided away from the first conductive line and the second conductive line; The pressure pad further includes a first waterproof layer and a second waterproof layer, the first waterproof layer being located on a side of the first conductive layer facing away from the pressure-sensitive layer, and the second waterproof layer being located on a side of the second conductive layer facing away from the pressure-sensitive layer, the first waterproof layer and the second waterproof layer being in contact with each other through the ventilation holes to form a waterproof portion; The waterproof portion is provided with an air hole, the air hole is located inside the ventilation hole, and the air hole is spaced apart from the ventilation hole.

9. A seat comfort system, characterized in that: Comprising a pressure pad as claimed in any one of claims 1 to 8.

10. A seat, characterized in that: Comprising the seat comfort system as claimed in claim 9.

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