A pressure pad, a seat comfort system and a seat

Abstract

The embodiment of the present application relates to a pressure pad, a seat comfort system and a seat, the pressure pad comprising a first conductive layer, a pressure-sensitive layer and a second conductive layer; the first conductive layer comprises a first carrier and a first conductive wire; the first conductive wire comprises a first part, a second part and a third part connected, the first part is arranged on the side of the first carrier facing the pressure-sensitive layer, the second part penetrates through the first carrier, and the third part is arranged on the side of the first carrier away from the pressure-sensitive layer; the first part is electrically connected with the second conductive layer through the pressure-sensitive layer to form a sensing point. Through the pressure pad, the first part of the first conductive wire is electrically connected with the second conductive layer through the pressure-sensitive layer to form a sensing point, and the third part (non-sensing point) of the first conductive wire is arranged on the side of the first carrier away from the pressure-sensitive layer, thereby reducing the risk of non-sensing point crosstalk and improving the sensitivity of the pressure pad.

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 consists of two conductive layers. The two conductive layers are electrically conductive at the sensing points. However, the two conductive layers at the non-sensing points will generate crosstalk through the pressure-sensitive layer. Utility Model Content

[0004] 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.

[0005] 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 and a first conductive wire; the first conductive wire includes a first portion, a second portion, and a third portion connected together, the first portion being disposed on the side of the first carrier facing the pressure-sensitive layer, the second portion penetrating the first carrier, and the third portion being disposed on the side of the first carrier facing away from the pressure-sensitive layer; the first portion is electrically connected to the second conductive layer through the pressure-sensitive layer to form a sensing point.

[0006] In one alternative embodiment, the second conductive layer includes a second carrier and a second conductive line; the second conductive line includes a first segment, a second segment, and a third segment connected together, the first segment being disposed on the side of the second carrier facing the pressure-sensitive layer, the second segment penetrating the second carrier, and the third segment being disposed on the side of the second carrier facing away from the pressure-sensitive layer; the first segment is electrically connected to the first segment through the pressure-sensitive layer to form the sensing point.

[0007] In one alternative embodiment, the number of first conductive lines is M, and the M first conductive lines are spaced apart along a first direction; the number of second conductive lines is N, and the N second conductive lines are spaced apart along a second direction; the first portions of the M first conductive lines are electrically connected to the first sections of the N second conductive lines through the pressure-sensitive layer to form M*N sensing sites.

[0008] 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.

[0009] In an alternative embodiment, the pressure pad further includes a controller, which is connected to the first conductive wire and the second conductive wire respectively via the connection terminal.

[0010] In one alternative approach, each a first conductive line converges to form a first main line, and each b second conductive line converges to form a second main line, with both the first and second main lines connected to the connection terminal.

[0011] In one alternative embodiment, the pressure pad further includes a first waterproof layer and a second waterproof layer, wherein the first waterproof layer is located on the side of the first conductive layer opposite to the pressure-sensitive layer, and the second waterproof layer is located on the side of the second conductive layer opposite to the pressure-sensitive layer.

[0012] In one alternative embodiment, the pressure pad is further provided with ventilation holes that penetrate the first carrier, the pressure-sensitive layer, and the second carrier, and the ventilation holes are arranged to avoid the first conductive wire and the second conductive wire; the first waterproof layer and the second waterproof layer contact each other through the ventilation holes to form a waterproof part; the waterproof part is provided with vent holes that are located inside the ventilation holes and are spaced apart from the ventilation holes.

[0013] According to one aspect of the embodiments of this application, a seat comfort system is provided, including the aforementioned pressure pad.

[0014] According to one aspect of the embodiments of this application, a seat is provided, including the aforementioned seat comfort system.

[0015] 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 and a first conductive wire. 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 electrically connected to the second conductive layer through the pressure-sensitive layer to form a sensing point. Through this pressure pad, the first portion of the first conductive wire is electrically connected to the second conductive layer through the pressure-sensitive layer to form a sensing point. The third portion of the first conductive wire (non-sensing point), because it is disposed on the side of the first carrier facing away from the pressure-sensitive layer, reduces the risk of crosstalk at non-sensing points and improves the sensitivity of the pressure pad. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of one implementation of the pressure pad provided in the embodiments of this application;

[0018] Figure 2 This is an exploded view of one implementation of the pressure pad provided in the embodiments of this application;

[0019] Figure 3 This is a wireframe diagram of one implementation of the pressure pad provided in the embodiments of this application;

[0020] Figure 4 This is a cross-sectional view of one implementation of the first conductive layer provided in the embodiments of this application;

[0021] Figure 5 This is an exploded view of another implementation of the pressure pad provided in the embodiments of this application;

[0022] Figure 6 This is a cross-sectional view of one implementation of the second conductive layer provided in the embodiments of this application;

[0023] Figure 7 This is an exploded view of another implementation of the pressure pad provided in the embodiments of this application;

[0024] Figure 8 This is a schematic diagram of yet another implementation of the pressure pad provided in the embodiments of this application;

[0025] Figure 9 This is an exploded view of another implementation of the pressure pad provided in the embodiments of this application;

[0026] Figure 10 This is a schematic diagram of the seat provided in an embodiment of this application.

[0027] The labels in the attached diagram are as follows:

[0028] 100. Pressure pad;

[0029] 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;

[0030] 100a, Ventilation hole; 100b, Waterproof section; 100c, Breathing hole;

[0031] 11. First carrier; 12. First insulating wire; 13. First conductive wire;

[0032] 121. First fixed segment; 122. Second fixed segment; d1. Stitch spacing of the first fixed segment; d2. Stitch spacing of the second fixed segment;

[0033] 131. Part One; 132. Part Two; 133. Part Three;

[0034] 31. Second carrier; 32. Second insulating wire; 33. Second conductive wire;

[0035] 321. Third fixed segment; 322. Fourth fixed segment; d3. Stitch gap of the third fixed segment; d4. Stitch gap of the fourth fixed segment;

[0036] 331. First section; 332. Second section; 333. Third section;

[0037] 200. Seat comfort system;

[0038] 201. Air bag; 202. Air source; 203. Control system;

[0039] 1000, Seat; 300, Backrest; 400, Seat Cushion. Detailed Implementation

[0040] 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.

[0041] 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.

[0042] Please see Figures 1 to 3The 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] Among them, the stitch spacing is the distance between two adjacent stitches, and the stitch gap is the space between two adjacent stitches.

[0047] It is worth noting that in some embodiments, the first carrier 11 is a woven fabric layer.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] It is worth noting that in some embodiments, the second carrier 31 is a woven fabric layer.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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 and a first conductive line; 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 forms a sensing site by being electrically connected to the second conductive layer through the pressure-sensitive layer.

2. The pressure pad according to claim 1, characterized in that, The second conductive layer includes a second carrier and a second conductive line; 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 part is electrically connected to the first segment through the pressure-sensitive layer to form the sensing site.

3. The pressure pad according to claim 2, characterized in that, 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 second conductive wires is N, and the N second conductive wires are spaced apart along the second direction; The first portion of the M first conductive lines is electrically connected to the first section of the N second conductive lines through the pressure-sensitive layer to form M*N sensing sites.

4. The pressure pad according to claim 3, characterized in that, 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 according to claim 4, characterized in that, The pressure pad also includes a controller, which is connected to the first conductive wire and the second conductive wire respectively through the connection terminal.

6. The pressure pad according to claim 5, characterized in that, Each 'a' of the first conductive wires converges to form a first main line, and each 'b' of the second conductive wires converges to form a second main line. Both the first main line and the second main line are connected to the connection terminal.

7. The pressure pad according to any one of claims 2-6, characterized in that, The pressure pad further includes a first waterproof layer and a second waterproof layer, wherein the first waterproof layer is located on the side of the first conductive layer opposite to the pressure-sensitive layer, and the second waterproof layer is located on the side of the second conductive layer opposite to the pressure-sensitive layer.

8. The pressure pad according to claim 7, characterized in that, 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 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 a vent hole, which is located inside the ventilation hole and is spaced apart from the ventilation hole.

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

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

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