A heating pad with occupant sensors

Abstract

This application relates to a heated pad with an occupant sensor, comprising a first thin film layer, an occupant sensor, a second thin film layer, and a spacer. The first thin film layer has a heating coating applied to the side facing the second thin film layer. The spacer is used to adhere the first thin film layer to the second thin film layer. The occupant sensor is located between the first and second thin film layers. This application effectively reduces the space occupied by the heated pad and occupant sensor on the seat foam.

Description

Technical Field

[0001] This application relates to the field of automotive parts, and more particularly to a heating pad with an occupant sensor. Background Technology

[0002] A car heating pad is a functional seat cushion for heating car seats, mainly used to improve riding comfort in winter. It uses internal heating elements to adjust the temperature levels to meet different needs.

[0003] Currently, car seat heating pads and occupant sensors are usually placed as two separate products on the seat foam. The separate placement of the heating pad and occupant sensor occupies a large space on the seat foam, and the multiple components make the seat installation process complicated, resulting in low production line efficiency and increased production costs. Utility Model Content

[0004] To reduce the space occupied by the heating pad and occupant sensor in the seat foam, this application provides a heating pad with an occupant sensor.

[0005] This application provides a heating pad with an occupant sensor, which adopts the following technical solution:

[0006] A heating pad with an occupant sensor includes a first thin film layer, an occupant sensor, a second thin film layer, and a spacer. The first thin film layer is coated with a heating coating for heating on the side facing the second thin film layer. The spacer is used to adhere the first thin film layer to the second thin film layer. The occupant sensor is located between the first thin film layer and the second thin film layer.

[0007] By adopting the above technical solution, the first film layer, the occupant sensor, and the second film layer are integrated, enabling the heating pad to simultaneously possess heating and occupant sensing functions. This achieves the integrated integration of heating and sensing functions, resulting in space saving and reduced costs for subsequent seat production lines. The spacer adhesive improves the connection strength between the first and second film layers, thereby enhancing the reliability of the occupant sensor.

[0008] Optionally, the heating coating includes silver paste and self-regulating carbon paste, wherein the silver paste of the heating coating is a conductive path and the self-regulating carbon paste of the heating coating is a heating element.

[0009] By adopting the above technical solution, silver paste, as a conductive material, conducts electrical energy evenly to all parts of the heating pad through its good conductivity, ensuring uniform current distribution. Carbon paste is mainly responsible for converting electrical energy into heat energy, and the self-regulating carbon paste can reduce overheating during the heating process.

[0010] Optionally, the occupant sensor includes a bottom layer circuit and a top layer circuit, wherein the top layer circuit is disposed on the side of the heating coating facing the second thin film layer, and the bottom layer circuit is disposed on the side of the second thin film layer facing the first thin film layer.

[0011] By adopting the above technical solution, the bottom circuit is the base electrode of the sensor, while the top circuit is the surface electrode that comes into contact with the occupant. Through the combined action of the bottom circuit and the top circuit, the pressure signal can be conducted and the signal change can be detected.

[0012] Optionally, a first insulating layer, which is an insulating ink, is provided between the heating coating and the top layer circuit.

[0013] By adopting the above technical solution, the insulating ink can effectively isolate the heating coating from the top circuit, reduce electrical interference between the heating coating and the top circuit, ensure the normal operation of the occupant sensor, and ensure that the sensing accuracy is not affected by the electrical properties of the heating part.

[0014] Optionally, a second insulating layer is provided between the first insulating layer and the top layer circuit. The second insulating layer is an insulating ink, and the area of ​​the second insulating layer is smaller than the area of ​​the first insulating layer.

[0015] By adopting the above technical solution, the first insulating layer will produce holes during the actual printing process, which cannot guarantee the insulation effect. Printing a second insulating layer further enhances the insulation effect between the heating coating and the top circuit, more reliably avoiding electrical interference from the heating part to the sensing circuit, and improving the stability of the occupant sensor operation.

[0016] Optionally, a spacer is provided on the side of the second film layer facing the first film layer, and the spacer is used for the second film layer to adhere to the first film layer.

[0017] By adopting the above technical solution, the second film layer is adhered to the first film layer by a spacer adhesive. This connection method is simple and reliable, which can not only ensure a solid bond between the two film layers, but also provide suitable installation space for the occupant sensor and heating coating in the middle, which facilitates the integrated assembly of various components.

[0018] Optionally, the spacer adhesive has a clearance groove, which is used for electrical connection between the top layer circuit and the bottom layer circuit.

[0019] By adopting the above technical solution, the clearance slot provides a channel for the electrical connection between the top-level circuit and the bottom-level circuit, ensuring the integrity and normal operation of the occupant sensor circuit.

[0020] Optionally, the first and second film layers are made of PET film.

[0021] By adopting the above technical solutions, PET film has good insulation, heat resistance and mechanical properties, making it suitable as a substrate for heating pads and sensors, and ensuring the stability and service life of the overall structure.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By integrating the heating pad and the occupant sensor between the first and second thin film layers, the problem of large space occupation and complicated installation process caused by the separate setting of the two in the traditional technology is solved. The number of parts and assembly steps are reduced, thereby reducing production costs and saving space used for seat foam.

[0024] 2. The heating coating uses silver paste and self-regulating carbon paste, which enables stable heating of the heating pad, and the self-regulating carbon paste reduces the occurrence of overheating of the heating pad;

[0025] 3. The spacer not only ensures the stable adhesion of the thin film layer, but also guarantees the electrical connection of the sensor circuit through the clearance groove. The overall structure is reasonably laid out, which improves the assembly convenience and service life of the product. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a heating pad with occupant sensors.

[0027] Reference numerals: 1. First thin film layer; 2. Occupant sensor; 21. Bottom layer circuit; 22. Top layer circuit; 3. Second thin film layer; 4. Spacer adhesive; 41. Clearance groove; 5. Heating coating; 6. First insulating layer; 7. Second insulating layer. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0029] This application discloses a heating pad with an occupant sensor. (See also...) Figure 1 A heating pad with an occupant sensor includes a first thin film layer 1, an occupant sensor 2, a second thin film layer 3, and a spacer 4. The occupant sensor 2 is located between the first thin film layer 1 and the second thin film layer 3, and the spacer 4 is used to adhere the first thin film layer 1 to the second thin film layer 3.

[0030] Reference Figure 1 The first film layer 1 and the second film layer 3 are PET films. A heating coating 5 is coated on the sidewall of the first film layer 1 facing the second film layer 3. The heating coating 5 is silver paste and self-regulating carbon paste, wherein the silver paste is a conductive path and the self-regulating carbon paste is a heating element.

[0031] Reference Figure 1The occupant sensor 2 includes a bottom circuit 21 and a top circuit 22. The bottom circuit 21 is fixedly disposed on the side of the second thin film layer 3 facing the heating coating 5. The top circuit 22 is located on the side of the bottom circuit 21 away from the second thin film layer 3. The spacer 4 is located between the top circuit 22 and the bottom circuit 21. The spacer 4 is adhered to the second thin film layer 3 and covers the bottom circuit 21. A clearance groove 41 is provided on the spacer 4. The top circuit 22 is adhered to the spacer 4 and is electrically connected to the bottom circuit 21 through the clearance groove 41.

[0032] Reference Figure 1 A first insulating layer 6 is applied to the sidewall of the heating coating 5 facing the second thin film layer 3. The first insulating layer 6 is an insulating ink. The first insulating layer 6 covers the heating coating 5. A second insulating layer 7 is applied to the side of the first insulating layer 6 facing away from the heating coating 5. The second insulating layer 7 is an insulating ink. The area of ​​the second insulating layer 7 is smaller than the area of ​​the first insulating layer 6. The second insulating layer 7 covers the top circuit 22. The spacer 4 is adhered to the first thin film layer 1.

[0033] The implementation principle of a heating pad with occupant sensor 2 in this application embodiment is as follows: the worker first installs the bottom circuit 21 onto the second thin film layer 3, then adheres the spacer 4 onto the second thin film layer 3 and covers the bottom circuit 21, then installs the top circuit 22 onto the spacer 4, and achieves electrical connection between the top circuit 22 and the bottom circuit 21 through the clearance groove 41 of the spacer 4.

[0034] Then, a heating coating 5 is applied to the first thin film, with silver paste as a conductive path and carbon paste as a heating element. Next, a first insulating layer 6 and a second insulating layer 7 are applied sequentially to the heating coating 5. The second insulating layer 7 is used to cover the holes in the first insulating layer 6. Finally, the first thin film is adhered to the second thin film, so that the second insulating layer 7 covers the upper circuit.

[0035] By integrating the heating coating 5, the occupant sensor 2, the first thin film layer 1, and the second thin film layer 3, the heating pad can simultaneously perform heating and occupant sensing functions, solving the problems of occupying a large space in the seat foam, complicated installation process, and high production cost.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A heating pad with an occupant sensor, characterized in that: The device includes a first thin film layer (1), an occupant sensor (2), a second thin film layer (3), and a spacer (4). The first thin film layer (1) is coated with a heating coating (5) for heating on the side facing the second thin film layer (3). The spacer (4) is used to adhere the first thin film layer (1) to the second thin film layer (3). The occupant sensor (2) is located between the first thin film layer (1) and the second thin film layer (3).

2. A heating pad with an occupant sensor according to claim 1, characterized in that: The heating coating (5) includes silver paste and self-regulating carbon paste. The silver paste of the heating coating (5) is a conductive path, and the self-regulating carbon paste of the heating coating (5) is a heating element.

3. A heating pad with an occupant sensor according to claim 1, characterized in that: The occupant sensor (2) includes a bottom circuit (21) and a top circuit (22). The top circuit (22) is disposed on the side of the heating coating (5) facing the second thin film layer (3), and the bottom circuit (21) is disposed on the side of the second thin film layer (3) facing the first thin film layer (1).

4. A heating pad with an occupant sensor according to claim 3, characterized in that: A first insulating layer (6) is provided between the heating coating (5) and the top circuit (22), and the first insulating layer (6) is insulating ink.

5. A heating pad with an occupant sensor according to claim 4, characterized in that: A second insulating layer (7) is provided between the first insulating layer (6) and the top circuit (22). The second insulating layer (7) is an insulating ink, and the area of ​​the second insulating layer (7) is smaller than the area of ​​the first insulating layer (6).

6. A heating pad with an occupant sensor according to claim 3, characterized in that: The second film layer (3) is provided with a spacer (4) on the side facing the first film layer (1), and the spacer (4) is used for the second film layer (3) to adhere to the first film layer (1).

7. A heating pad with an occupant sensor according to claim 1, characterized in that: The spacer (4) has a clearance groove (41) for electrical connection between the top layer circuit (22) and the bottom layer circuit (21).

8. A heating pad with an occupant sensor according to claim 3, characterized in that: The first film layer (1) and the second film layer (3) are made of PET film.

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