Pressure sensor and seat assembly of vehicle

Abstract

The invention discloses a pressure sensor and a seat assembly of a vehicle, and relates to the technical field of sensors. Comprising a pressure-sensitive unit, the pressure-sensitive unit comprises a pressure-sensitive body, the pressure-sensitive body comprises a first base material and a plurality of pressure-sensitive parts, the first base material forms an avoiding opening, and the plurality of pressure-sensitive parts are arranged on the surface of the first base material and correspond to the avoiding opening; each conductive assembly is in contact with all the pressure-sensitive parts, the conductive assemblies are isolated from one another, each conductive assembly at least comprises an electrode, each electrode at least correspondingly contacts with one pressure-sensitive part, and the electrodes of the same conductive assembly correspondingly contact with different pressure-sensitive parts; and pressure detection points are formed by the pressure-sensitive pieces and the electrodes correspondingly contacted with the pressure-sensitive pieces. Therefore, the plurality of pressure-sensitive parts can be arranged on the surface of the first substrate to form the pressure-sensitive body, and then the pressure-sensitive body is connected with the conductive assembly, so that the placing process of the plurality of pressure-sensitive parts can be moved out of the main production line, the main production line does not need to be shut down and then the plurality of pressure-sensitive parts are placed, and the production takt is improved and the productivity is improved.

Description

Technical Field

[0001] This invention relates to the field of sensor technology, and in particular to a pressure sensor and a vehicle seat assembly. Background Technology

[0002] In related technologies, the manufacturing process of flexible pressure sensors is relatively complicated. During the production process on the main production line, the main production line needs to be shut down, and then the scattered pressure-sensitive materials need to be placed manually, which seriously affects the production cycle of flexible pressure sensors and wastes some production capacity. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a pressure sensor that, through structural improvements, allows the placement process of multiple pressure-sensitive components to be moved off the main production line, eliminating the need to stop the main production line to place multiple pressure-sensitive components, thereby improving production cycle time and increasing capacity.

[0004] The present invention further proposes a vehicle seat assembly.

[0005] The pressure sensor according to the present invention includes: a pressure-sensitive unit, the pressure-sensitive unit including: a pressure-sensitive body including: a first substrate and a plurality of pressure-sensitive elements, the first substrate having a clearance opening, the plurality of pressure-sensitive elements being disposed on the surface of the first substrate and corresponding to the clearance opening; two conductive components, each of the conductive components being in contact with all the pressure-sensitive elements, the conductive components being isolated from each other, each conductive component including at least one electrode, each electrode corresponding to at least one pressure-sensitive element, the pressure-sensitive elements corresponding to the electrodes of the same conductive component being different; each pressure-sensitive element and the corresponding electrode of each pressure-sensitive element forming a pressure detection point.

[0006] According to the pressure sensor of the present invention, multiple pressure-sensitive elements can be first disposed on the surface of a first substrate to form a pressure-sensitive body, and then the pressure-sensitive body can be connected to a conductive component. This allows the placement process of multiple pressure-sensitive elements to be moved off the main production line, eliminating the need to stop the main production line and then place multiple pressure-sensitive elements, which is beneficial for improving production cycle time and increasing production capacity.

[0007] In some examples of the present invention, the pressure sensor further includes: a second substrate, the second substrate and the pressure-sensitive body being arranged along the thickness direction of the first substrate, and at least one of the conductive components being located between the second substrate and the pressure-sensitive body.

[0008] In some examples of the present invention, both conductive components are located between the second substrate and the pressure-sensitive body, and the orthographic projections of the electrodes of different conductive components on the first substrate are staggered; or, one of the conductive components is located between the second substrate and the pressure-sensitive body, and the other conductive component is located on the side of the pressure-sensitive body away from the second substrate.

[0009] In some examples of the present invention, the electrode is composed of planar conductive elements and / or linear conductive elements.

[0010] In some examples of the present invention, at least one pressure-sensitive element is provided corresponding to the clearance opening, the electrode includes a planar conductive element and a linear conductive element, the planar conductive element at least covers the clearance opening, and the linear conductive element contacts the pressure-sensitive element through the planar conductive element.

[0011] In some examples of the present invention, the electrodes disposed on the same side of the first substrate have the same composition and structure.

[0012] In some examples of the present invention, the planar conductive element and / or the linear conductive element are wavy, square, rectangular, or S-shaped at the clearance opening.

[0013] In some examples of the present invention, the planar conductive element is a flexible conductive plate or conductive cloth, and the linear conductive element is a wire.

[0014] In some examples of the present invention, the pressure sensor further includes: a connector and a connecting member, wherein the number of the connecting members is the same as the number of the electrodes and they are connected in a one-to-one correspondence, and multiple connecting members are connected to the connector. And / or, further comprising: two insulating layers, wherein the pressure-sensitive unit is located between the two insulating layers, and the edges of the two insulating layers are abutted against each other to insulate the pressure-sensitive unit from the outside world.

[0015] The vehicle seat assembly according to the present invention includes the pressure sensor described above.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an exploded schematic diagram of the pressure sensor according to the present invention; Figure 2 This is a partial cross-sectional schematic diagram of the pressure sensor according to the present invention; Figure 3 This is an exploded view of the pressure sensor according to the present invention (connectors and connecting parts omitted). Figure 4 This is a schematic diagram of multiple pressure-sensitive elements and two conductive components according to the present invention (electrodes include linear conductive elements). Figure 5 This is a schematic diagram of multiple pressure-sensitive elements and two conductive components according to the present invention (the electrodes include linear conductive elements and planar conductive elements). Figure 6 yes Figure 5 A partial cross-sectional schematic diagram of an embodiment of the pressure sensor shown; Figure 7 This is a schematic diagram of multiple pressure-sensitive elements and two conductive components according to the present invention (electrodes include planar conductive elements); Figure 8 yes Figure 7 A partial cross-sectional schematic diagram of an embodiment of the pressure sensor shown; Figure 9 This is an exploded view of the pressure sensor according to the present invention (both conductive components are located between the pressure-sensitive body and the second substrate, and the electrodes include linear conductive elements). Figure 10 This is an exploded view of the pressure sensor according to the present invention (two conductive components are disposed on both sides of the pressure-sensitive body, and the electrodes include linear conductive elements). Figure 11 yes Figure 10 A schematic diagram showing the interaction between multiple pressure-sensitive elements and two conductive components in a pressure sensor. Figure 12 This is an exploded view of the pressure sensor according to the present invention (both conductive components are located between the pressure-sensitive body and the second substrate, and the electrodes include planar conductive elements). Figure 13 This is an exploded view of the pressure sensor according to the present invention (two conductive components are disposed on both sides of the pressure-sensitive body, and the electrodes include planar conductive parts). Figure 14 yes Figure 12 A schematic diagram showing the interaction between multiple pressure-sensitive elements and two conductive components in a pressure sensor. Figure 15 This is a circuit diagram of the pressure sensor according to the present invention.

[0018] Figure label: Pressure sensor 100; 10 pressure-sensitive unit; 11 pressure-sensitive body; 111 pressure-sensitive element; 12 conductive component; 121 electrode; 1212 planar conductive element; 1213 linear conductive element; First substrate 13; clearance 131; Connector 20; Connector 21; Insulation layer 22; Second substrate 30. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The following is for reference. Figures 1-15 A pressure sensor 100 and a vehicle seat assembly are described according to an embodiment of the present invention.

[0021] like Figure 1 , Figure 3 , Figure 9 , Figure 10 , Figure 12 , Figure 13 As shown, the pressure sensor 100 according to an embodiment of the present invention includes: a pressure-sensitive unit 10, the pressure-sensitive unit 10 including: a pressure-sensitive body 11 and two conductive components 12.

[0022] The pressure-sensitive body 11 includes: a first substrate 13 and a plurality of pressure-sensitive elements 111. The first substrate 13 has a clearance opening 131. The plurality of pressure-sensitive elements 111 are disposed on the surface of the first substrate 13 and correspond to the clearance opening 131. Each conductive component 12 is in contact with all pressure-sensitive elements 111. Each conductive component 12 is isolated from each other. Each conductive component 12 includes at least one electrode 121. Each electrode 121 is in contact with at least one pressure-sensitive element 111. The pressure-sensitive elements 111 contacted by the electrodes 121 of the same conductive component 12 are different. Each pressure-sensitive element 111 and the corresponding electrode 121 form a pressure detection point.

[0023] The number of clearance openings 131 can be one or more. The number of pressure-sensitive elements 111 can be greater than or equal to the number of clearance openings 131. When the number of pressure-sensitive elements 111 is greater than the number of clearance openings 131, at least one clearance opening 131 corresponds to multiple pressure-sensitive elements 111. When the number of pressure-sensitive elements 111 is equal to the number of clearance openings 131, multiple pressure-sensitive elements 111 correspond one-to-one with multiple clearance openings 131. By providing clearance openings 131, conductive components 12 located on the side of the first substrate 13 facing away from a certain pressure-sensitive element 111 can contact that pressure-sensitive element 111 through the clearance openings 131.

[0024] Multiple pressure-sensitive elements 111 are disposed on the surface of the first substrate 13. In some embodiments of this application, multiple pressure-sensitive elements 111 are disposed on the same side surface of the first substrate 13. In other embodiments, some pressure-sensitive elements 111 are disposed on one side surface of the first substrate 13, and other pressure-sensitive elements 111 are disposed on the other side surface of the first substrate 13. It can be understood that one side surface and the other side surface of the first substrate 13 are along the thickness direction of the first substrate 13 (i.e.,...). Figure 1 The pressure-sensitive element 111 can be disposed on the surface of the first substrate 13 by means of, but not limited to, sewing, gluing, heat pressing, etc.

[0025] Each conductive component 12 is isolated from the others; in other words, each conductive component 12 does not make direct electrical contact. Each conductive component 12 includes at least one electrode 121. That is, a conductive component 12 may include one electrode 121, or it may include multiple electrodes 121. This application describes the case where a conductive component 12 includes multiple electrodes 121 as an example. Each electrode 121 is in contact with at least one pressure-sensitive element 111. The pressure-sensitive elements 111 contacted by the electrodes 121 of the same conductive component 12 are different. That is, the same conductive component 12 is in contact with all pressure-sensitive elements 111, and the electrodes 121 of the same conductive component 12 are in contact with different pressure-sensitive elements 111.

[0026] Each pressure-sensitive element 111 and the corresponding electrode 121 that contacts each pressure-sensitive element 111 form a pressure detection point to realize the detection function of the pressure sensor 100. Specifically, the change in resistance of the pressure-sensitive element 111 under pressure causes a change in the circuit current, thereby realizing the sensing function. After the pressure-sensitive element 111 is pressed, its resistance can change regularly with the magnitude of the pressure.

[0027] As some embodiments of this application, the pressure-sensitive element 111 is made of a conductive flexible material, including but not limited to composite fabric materials, carbon-based composite materials, organosilicon materials and pressure-sensitive adhesives, etc., and the pressure-sensitive element 111 can be shaped as needed while ensuring its function.

[0028] As some embodiments of this application, the material of the first substrate 13 is any non-conductive flexible material, including but not limited to natural flexible materials, synthetic polymer materials, foams and porous materials, etc. As some embodiments of this application, the first substrate 13 may be adhesive-coated for bonding to the pressure-sensitive element 111 and / or the conductive component 12.

[0029] As some embodiments of this application, the shape of the clearance opening 131 can be selected according to design needs, including but not limited to circles, squares, polygons, etc.

[0030] As some embodiments of this application, the electrode 121 of the conductive component 12 is made of any flexible conductive material, including but not limited to metal foil tape, metal cloth and wires, etc. The electrode 121 of the same conductive component 12 can be made of one material or multiple materials.

[0031] It should be noted that, during the production process, the preparation process of the pressure-sensitive body 11 can be independent of the assembly process of the pressure sensor 100. Specifically, multiple pressure-sensitive elements 111 can be first disposed on the surface of the first substrate 13 to form the pressure-sensitive body 11, and then the pressure-sensitive body 11 can be assembled with other components of the pressure sensor 100. This eliminates the need to stop the main production line to place multiple pressure-sensitive elements 111 during the main production line operation, reducing the complexity of the process and improving production capacity. Furthermore, by having the pressure-sensitive elements 111 supported by the first substrate 13, the flexibility of the pressure sensor 100 can be improved, giving the pressure sensor 100 higher durability and extending its service life.

[0032] Therefore, multiple pressure-sensitive elements 111 can be first placed on the surface of the first substrate 13 to form a pressure-sensitive body 11, and then the pressure-sensitive body 11 can be connected to the conductive component 12. This allows the placement process of multiple pressure-sensitive elements 111 to be moved out of the main production line, eliminating the need to stop the main production line and place multiple pressure-sensitive elements 111. This helps to improve the production cycle and increase production capacity.

[0033] In some embodiments of the present invention, such as Figure 1 , Figure 3 , Figure 9 , Figure 10 , Figure 12 , Figure 13 As shown, the pressure sensor 100 further includes: a second substrate 30, the second substrate 30 and the pressure-sensitive body 11 along the thickness direction of the first substrate 13 (i.e., Figure 1 The components are arranged in the Z direction as shown, and at least one conductive component 12 is located between the second substrate 30 and the pressure-sensitive body 11.

[0034] Wherein, the thickness direction of the first substrate 13 (i.e. Figure 1 The Z direction shown can be understood as the up and down direction of the pressure sensor 100. The second substrate 30 can be disposed above the pressure-sensitive body 11, or the second substrate 30 can be disposed below the pressure-sensitive body 11. One conductive component 12 is located between the second substrate 30 and the pressure-sensitive body 11, or both conductive components 12 are located between the second substrate 30 and the pressure-sensitive body 11.

[0035] Among them, as some embodiments of this application, such as Figures 1-3 , Figure 10 , Figure 13As shown, one conductive component 12 is located between the second substrate 30 and the pressure-sensitive body 11, and another conductive component 12 is located on the side of the pressure-sensitive body 11 facing away from the second substrate 30. Alternatively, as in some embodiments of this application, such as Figure 9 , Figure 12 As shown, both conductive components 12 are located between the second substrate 30 and the pressure-sensitive body 11. The conductive component 12 located between the second substrate 30 and the pressure-sensitive body 11 can be disposed on the second substrate 30, and can be fixed to the second substrate 30 by means of, but not limited to, sewing, gluing, or heat pressing.

[0036] By providing the second substrate 30, the conductive component 12 located between the second substrate 30 and the pressure-sensitive body 11 can be supported. This provides a fixing point for the conductive component 12, allowing the fixing process of the conductive component 12 between the second substrate 30 and the pressure-sensitive body 11 to be completely separated from and synchronized with the manufacturing process of the pressure-sensitive body 11. This improves production cycle time and increases capacity. Furthermore, it allows for a flatter arrangement of the conductive component 12 between the second substrate 30 and the pressure-sensitive body 11, reducing the risk of wrinkles or displacement of the conductive component 12 due to the opening structure of the first substrate 13, and reducing the risk of short circuits caused by structural deformation of the conductive component 12, thus improving the structural stability of the pressure sensor 100. In addition, providing the second substrate 30 improves the flexibility of the pressure sensor 100, giving it higher durability and extending its service life.

[0037] As some embodiments of this application, the material of the second substrate 30 is any non-conductive flexible material, including but not limited to natural flexible materials, synthetic polymer materials, foam and porous materials, etc.

[0038] In some embodiments of the present invention, such as Figure 9 , Figure 12 As shown, both conductive components 12 are located between the second substrate 30 and the pressure-sensitive body 11, and the orthographic projections of the electrodes 121 of the different conductive components 12 on the first substrate 13 are staggered.

[0039] By placing both conductive components 12 between the second substrate 30 and the pressure-sensitive body 11, the second substrate 30 can support the two conductive components 12 and provide fixing points for them. This allows the fixing process of the two conductive components 12 to be completely separated from the manufacturing process of the pressure-sensitive body 11 and carried out synchronously, which helps to improve production cycle and increase capacity. By making the orthographic projections of the electrodes 121 of different conductive components 12 on the first substrate 13 staggered, the risk of short circuit between the two conductive components 12 can be reduced. In addition, this arrangement has fewer steps, simplifies the process, and facilitates production.

[0040] In some embodiments of the present invention, such as Figures 1-3 , Figure 10 , Figure 13 As shown, one conductive component 12 is located between the second substrate 30 and the pressure-sensitive body 11, and the other conductive component 12 is located on the side of the pressure-sensitive body 11 opposite to the second substrate 30. This arrangement allows the conductive component 12 located between the second substrate 30 and the pressure-sensitive body 11 to be supported by the second substrate 30, and the two conductive components 12 can be separated by the first substrate 13, reducing the risk of short circuit between the two conductive components 12 and improving the reliability of the pressure sensor 100.

[0041] In some embodiments of the present invention, such as Figures 1-14 As shown, electrode 121 is composed of planar conductive element 1212 and / or linear conductive element 1213.

[0042] As some embodiments of this application, such as Figure 7 , Figure 8 , Figures 12-14 As shown, electrode 121 is composed of planar conductive element 1212. As some embodiments of this application, such as... Figures 1-4 , Figures 9-11 As shown, electrode 121 is composed of linear conductive element 1213. This is one of the embodiments of this application, such as... Figure 5 , Figure 6 As shown, electrode 121 is composed of planar conductive element 1212 and linear conductive element 1213.

[0043] As some embodiments of this application, the planar conductive element 1212 can be at least one of a flexible electrode plate and a conductive cloth, and the linear conductive element 1213 can be a conductive yarn.

[0044] By composing the electrode 121 with a planar conductive element 1212, the contact between the electrode 121 and the pressure-sensitive element 111 can be surface contact, resulting in high sensing accuracy and strong stability. Furthermore, the force is uniform, which helps improve the durability of the pressure sensor 100 and adapts it to long-term cyclic pressure. Alternatively, by composing the electrode 121 with a linear conductive element 1213, the linear conductive element 1213 can be arranged in any direction according to design requirements, offering flexibility. Moreover, the linear conductive element 1213 is made of a softer material, is thinner, and has less foreign body sensation, improving the feel of the pressure sensor 100. In addition, the linear conductive element 1213 uses less material, which helps save costs.

[0045] By making electrode 121 consist of planar conductive element 1212 and linear conductive element 1213, the advantages of planar conductive element 1212 and linear conductive element 1213 can be fully utilized. The part of electrode 121 that contacts pressure-sensitive element 111 can be constructed as planar conductive element 1212, so that the contact between electrode 121 and pressure-sensitive element 111 is surface contact, resulting in high sensing accuracy and strong stability. Furthermore, the part of electrode 121 that does not contact pressure-sensitive element 111 can be constructed as linear conductive element 1213, which allows for flexible arrangement and helps save costs.

[0046] In some embodiments of the present invention, such as Figure 5 , Figure 6 As shown, at least one pressure-sensitive element 111 is provided corresponding to the clearance opening 131. The electrode 121 includes a planar conductive element 1212 and a linear conductive element 1213. The planar conductive element 1212 at least covers the clearance opening 131, and the linear conductive element 1213 contacts the pressure-sensitive element 111 through the planar conductive element 1212.

[0047] In this embodiment, a pressure-sensitive element 111 is correspondingly provided at the clearance opening 131, or multiple pressure-sensitive elements 111 are correspondingly provided at the clearance opening 131. The conductive component 12 located on the side of the first substrate 13 facing away from a certain pressure-sensitive element 111 can contact the pressure-sensitive element 111 through the clearance opening 131. As some embodiments of this application, at least a portion of the planar conductive element 1212 is located at the clearance opening 131. As some embodiments of this application, the planar conductive element 1212 completely covers the clearance opening 131, that is, the planar conductive element 1212 corresponds to the clearance opening 131, and the area of ​​the planar conductive element 1212 facing the clearance opening 131 is greater than or equal to the open area of ​​the clearance opening 131. The linear conductive element 1213 contacts the pressure-sensitive element 111 through the planar conductive element 1212. As some embodiments of this application, the linear conductive element 1213 is located on the side of the planar conductive element 1212 facing away from the corresponding pressure-sensitive element 111.

[0048] This arrangement can fully utilize the advantages of the planar conductive element 1212 and the linear conductive element 1213. By making the planar conductive element 1212 at least partially cover the clearance opening 131, the contact between the electrode 121 and the pressure-sensitive element 111 can be a surface contact, resulting in high sensing accuracy and strong stability. By making the linear conductive element 1213 contact the pressure-sensitive element 111 through the planar conductive element 1212, the arrangement is flexible and helps to save costs.

[0049] In some embodiments of the present invention, such as Figures 1-14 As shown, the electrodes 121 disposed on the same side of the first substrate 13 have the same composition structure. The number of conductive components 12 disposed on the same side of the first substrate 13 can be one, or the number of conductive components 12 disposed on the same side of the first substrate 13 can be two, and each conductive component 12 includes at least one electrode 121.

[0050] When the number of conductive components 12 disposed on the same side of the first substrate 13 is one, and the conductive component 12 includes multiple electrodes 121, the multiple electrodes 121 of the conductive component 12 have the same composition structure. When the number of conductive components 12 disposed on the same side of the first substrate 13 is two, the electrodes 121 of the two conductive components 12 have the same composition structure.

[0051] The identical composition of electrodes 121 can be understood as having the same construction. For example, they can all be planar conductive elements 1212, or all be linear conductive elements 1213, or all be both planar conductive elements 1212 and linear conductive elements 1213. This arrangement allows all electrodes 121 on the same side of the first substrate 13 to be manufactured using the same processing steps and fixing methods. Electrodes 121 with the same structure can share a set of production equipment, which can significantly reduce the manufacturing difficulty and cost of the conductive component 12. Moreover, it can also ensure that the performance of electrodes 121 on the same side of the first substrate 13 is consistent, which is beneficial to improving sensing accuracy and stability.

[0052] As some embodiments of this application, such as Figures 1-14 As shown, electrode 121 can be constructed in various shapes. For example, at least a portion of electrode 121 can be constructed as a straight line, a curve, a wave, a U-shape, a spiral, etc. This application does not limit this.

[0053] In some embodiments of the present invention, such as Figures 1-4 , Figures 9-11 As shown, the planar conductive element 1212 and / or the linear conductive element 1213 are wavy, square, rectangular, or S-shaped at the clearance opening 131.

[0054] As some embodiments of this application, the planar conductive element 1212 is wavy, square, rectangular, or S-shaped at the clearance opening 131. As some embodiments of this application, the linear conductive element 1213 is wavy, square, rectangular, or S-shaped at the clearance opening 131. As some embodiments of this application, both the planar conductive element 1212 and the linear conductive element 1213 are wavy, square, rectangular, or S-shaped at the clearance opening 131.

[0055] By making the planar conductive element 1212 and / or the linear conductive element 1213 wavy, square, U-shaped, or S-shaped at the clearance opening 131, the electrode 121 can have a variety of selectable shapes, which can be selected according to actual production needs, and has a wide range of adaptability. In addition, this arrangement can make the contact area between the electrode 121 and the pressure-sensitive element 111 larger, resulting in high sensing accuracy and strong stability. Moreover, this arrangement can make the electrode 121 have a bending section at the clearance opening 131, which can provide a buffer margin for the deformation of the electrode 121, reduce the risk of the electrode 121 breaking under pressure, and improve the reliability of the pressure sensor 100.

[0056] In some embodiments of the present invention, the planar conductive element 1212 is a flexible conductive plate or conductive cloth, and the linear conductive element 1213 is a wire. Exemplarily, the wire can be conductive yarn, and the specific type of wire can be selected according to actual needs; this embodiment does not limit this.

[0057] By constructing the planar conductive element 1212 as a flexible conductive plate or conductive cloth, surface contact between the electrode 121 and the pressure-sensitive element 111 can be effectively achieved, resulting in high sensing accuracy and strong stability. Furthermore, the flexible conductive plate and conductive cloth have good flexibility and durability. By constructing the linear conductive element 1213 as a wire, the direction of the linear conductive element 1213 can be arranged according to design requirements, resulting in flexible arrangement, low foreign object sensation, and less material usage.

[0058] In some embodiments of the present invention, such as Figure 1 As shown, the pressure sensor 100 further includes: a connector 20 and connecting pieces 21. The number of connecting pieces 21 is the same as the number of electrodes 121, and they are connected one-to-one. Multiple connecting pieces 21 are all connected to the connector 20. Specifically, the number of connecting pieces 21 is the same as the total number of electrodes 121 of the two conductive components 12, and they are connected one-to-one. Each connecting piece 21 is electrically connected to its corresponding electrode 121, and multiple connecting pieces 21 are connected to the connector 20. The connection methods between the connecting pieces 21 and the electrodes 121, and between the connecting pieces 21 and the connector 20, can be, but are not limited to, terminal crimping, welding, or wire wrapping. The connector 20 can be used to connect to a controller, enabling the pressure sensor 100 to be connected to the controller. This configuration allows multiple electrodes 121 to be connected to the controller via multiple connectors 21. The sensing signal of each electrode 121 is transmitted through an independent connector 21, reducing the risk of signal aliasing and interference between multiple electrodes 121 during transmission, improving the accuracy of sensing data. Moreover, even if a pressure-sensitive element 111, electrode 121, or connector 21 fails, it will only affect the signal of the corresponding channel and will not cause an overall signal interruption. This ensures that a partial failure of the pressure sensor 100 does not affect the overall operation and improves the fault tolerance of signal transmission.

[0059] In some embodiments of the present invention, such as Figure 1 , Figure 3 , Figure 9 , Figure 10 , Figure 12 , Figure 13 As shown, the pressure sensor 100 also includes two insulating layers 22, with the pressure-sensitive unit 10 located between the two insulating layers 22, and the edges of the two insulating layers 22 are attached to each other to insulate and isolate the pressure-sensitive unit 10 from the outside of the insulating layers 22.

[0060] In some embodiments of this application, the pressure-sensitive unit 10 and the second substrate 30 are both located between two insulating layers 22, and the edges of the two insulating layers 22 are attached to each other so that the pressure-sensitive unit 10 and the second substrate 30 are both insulated and isolated from the outside of the insulating layer 22.

[0061] As some embodiments of this application, the material of the insulating layer 22 is a flexible waterproof material, including but not limited to thermoplastic polyurethane elastomer, rubber, polyvinyl chloride, waterproof and breathable membrane, etc. The shape of the insulating layer 22 can be manufactured according to actual needs, as long as it can completely isolate the pressure-sensitive unit 10 from the outside world after the edges of the two insulating layers 22 are attached to each other.

[0062] As some embodiments of this application, the two insulating layers 22 can be bonded together by means of, but not limited to, hot pressing, bonding, sewing, etc. As some embodiments of this application, the insulating layer 22 can be used in combination with a substrate, and the material of the substrate can be the same as that of the first substrate 13.

[0063] By bonding the edges of the two insulating layers 22 together to insulate the pressure-sensitive unit 10 from the outside world, a closed physical isolation can be achieved between the pressure-sensitive unit 10 and the outside world. This reduces the risk of pressure sensor 100 malfunctioning due to external impurities such as moisture, dust, and metal debris coming into contact with the pressure-sensitive element 111 and electrode 121, and improves the reliability of the pressure sensor 100.

[0064] As some embodiments of this application, the number of pressure-sensitive bodies 11, the number of second substrates 30, and the number of conductive components 12 can be increased according to design requirements.

[0065] The vehicle seat assembly according to an embodiment of the present invention includes the pressure sensor 100 of the above embodiment. The pressure sensor 100 of the above embodiment can first have multiple pressure-sensitive elements 111 disposed on the surface of a first substrate 13 to form a pressure-sensitive body 11, and then the pressure-sensitive body 11 is connected to a conductive component 12. This allows the placement process of the multiple pressure-sensitive elements 111 to be moved off the main production line, eliminating the need to stop the main production line to place the multiple pressure-sensitive elements 111, thus improving production cycle time and increasing capacity.

[0066] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0067] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0068] In the description of this invention, "a plurality of" means two or more.

[0069] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0070] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pressure sensor (100), characterized in that, include: Pressure-sensitive unit (10), the pressure-sensitive unit (10) includes: The pressure-sensitive body (11) includes: a first substrate (13) and a plurality of pressure-sensitive elements (111). The first substrate (13) has a clearance opening (131), and the plurality of pressure-sensitive elements (111) are disposed on the surface of the first substrate (13) and correspond to the clearance opening (131). Two conductive components (12) are provided, each of which is in contact with all of the pressure-sensitive elements (111). The conductive components (12) are isolated from each other. Each conductive component (12) includes at least one electrode (121), and each electrode (121) is in contact with at least one pressure-sensitive element (111). The pressure-sensitive elements (111) contacted by the electrodes (121) of the same conductive component (12) are different. Each pressure-sensitive element (111) and the corresponding electrode (121) that contacts each pressure-sensitive element (111) form a pressure detection point.

2. The pressure sensor (100) according to claim 1, characterized in that, Also includes: The second substrate (30) and the pressure-sensitive body (11) are arranged along the thickness direction of the first substrate (13), and at least one of the conductive components (12) is located between the second substrate (30) and the pressure-sensitive body (11).

3. The pressure sensor (100) according to claim 2, characterized in that, Both conductive components (12) are located between the second substrate (30) and the pressure-sensitive body (11), and the orthographic projections of the electrodes (121) of different conductive components (12) on the first substrate (13) are staggered. Alternatively, one of the conductive components (12) is located between the second substrate (30) and the pressure-sensitive body (11), and the other conductive component (12) is located on the side of the pressure-sensitive body (11) away from the second substrate (30).

4. The pressure sensor (100) according to any one of claims 1-3, characterized in that, The electrode (121) is composed of a planar conductive element (1212) and / or a linear conductive element (1213).

5. The pressure sensor (100) according to claim 4, characterized in that, The clearance opening (131) is provided with at least one pressure-sensitive element (111). The electrode (121) includes a planar conductive element (1212) and a linear conductive element (1213). The planar conductive element (1212) at least partially covers the clearance opening (131). The linear conductive element (1213) contacts the pressure-sensitive element (111) through the planar conductive element (1212).

6. The pressure sensor (100) according to claim 4, characterized in that, The electrodes (121) disposed on the same side of the first substrate (13) have the same composition and structure.

7. The pressure sensor (100) according to claim 4, characterized in that, The planar conductive element (1212) and / or the linear conductive element (1213) are wavy, square, rectangular, or S-shaped at the clearance opening (131).

8. The pressure sensor (100) according to claim 4, characterized in that, The planar conductive element (1212) is a flexible conductive plate or conductive cloth, and the linear conductive element (1213) is a wire.

9. The pressure sensor (100) according to claim 1, characterized in that, Also includes: Connector (20), connector (21), the number of connector (21) is the same as the number of electrodes (121) and they are connected one-to-one, and multiple connectors (21) are connected to the connector (20); And / or, further comprising: two insulating layers (22), wherein the pressure-sensitive unit (10) is located between the two insulating layers (22), and the edges of the two insulating layers (22) are abutted against each other to insulate the pressure-sensitive unit (10) from the outside of the insulating layers (22).

10. A vehicle seat assembly, characterized in that, Includes a pressure sensor (100) according to any one of claims 1-9.

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