Automobile seat provided with flexible pressure sensor

Abstract

The utility model relates to the technical field of automobile seats, and discloses an automobile seat provided with a flexible pressure sensor, which comprises a seat cushion, a flexible pressure sensor and a flexible pressure sensor, the backrest is rotatably arranged on the seat cushion, the backrest comprises a backrest main body and a shoulder support, a backrest main body surface sleeve is arranged on the outer surface of the backrest main body, and a shoulder support surface sleeve is arranged on the outer surface of the shoulder support; the headrest is arranged on the backrest, and a headrest surface cover is arranged on the outer surface of the headrest; wherein flexible pressure sensors are arranged on the inner side surfaces or interlayers of the seat cushion surface cover, the backrest main body surface cover, the shoulder supporting surface cover and the headrest surface cover. The passenger detection device has the advantages that passengers with different body types and heights can be stably detected, and the detection precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to an automobile seat equipped with a flexible pressure sensor. Background Art

[0002] People have higher and higher requirements for the function, safety and comfort of car seats. Some car seats are equipped with pressure sensors to detect the position of the driver and passengers in the vehicle, and then adjust the position of the car seat according to the pressure of the occupants' own weight on the car seat to improve the comfort of the occupants.

[0003] Traditional pressure sensors take up installation space in car seats, and cannot stably make comfort adjustments and intelligent seat position adjustments for passengers of different body shapes, and their detection accuracy is generally low. If capacitive pressure sensors and pressure-sensitive sensors are used to detect passenger information, there are problems such as high cost, complex installation process, and difficulty in mass production. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a car seat equipped with a flexible pressure sensor that can stably detect occupants of different body shapes and heights with high detection accuracy.

[0005] The utility model solves the technical problem by adopting a technical solution of providing a car seat equipped with a flexible pressure sensor, comprising:

[0006] A seat cushion, wherein the outer surface of the seat cushion has a seat cushion cover;

[0007] A backrest, rotatably arranged above the seat cushion, the backrest comprising a backrest body and a shoulder support, wherein the outer surface of the backrest body has a backrest body cover, and the outer surface of the shoulder support has a shoulder support cover;

[0008] A headrest, arranged on the backrest, wherein the outer surface of the headrest has a headrest cover;

[0009] Wherein, flexible pressure sensors are arranged in the inner side surfaces or interlayers of the seat cushion cover, the backrest main body cover, the shoulder support cover and the headrest cover.

[0010] Furthermore, the flexible pressure sensor is a resistive thin film flexible pressure sensor.

[0011] Further, the seat cushion, the backrest and the headrest all include foam, the seat cushion cover is coated on the foam of the seat cushion; the backrest main body cover and the shoulder support cover are coated on the foam of the backrest; the headrest cover is coated on the foam of the headrest;

[0012] The flexible pressure sensor is adhered and fixed on the foam and is attached to the inner surface of the seat cushion cover or the backrest main body cover or the shoulder support cover or the headrest cover.

[0013] Furthermore, the flexible pressure sensor is adhesively fixed on the inner surfaces of the seat cushion cover, the backrest main body cover, the shoulder support cover and the headrest cover.

[0014] Furthermore, the seat cushion cover, the backrest main body cover, the shoulder support cover and the headrest cover all include a cover leather layer and a cover composite layer, and the flexible pressure sensor is arranged between the leather layer and the cover composite layer.

[0015] Furthermore, the flexible pressure sensor includes a first adhesion layer, an X-direction electrode, an intermediate layer, a Y-direction electrode and a second adhesion layer, the X-direction electrode is arranged on the first adhesion layer, the Y-direction electrode is arranged on the second adhesion layer, the intermediate layer is arranged between the first adhesion layer and the second adhesion layer, and the X-direction electrode and the Y-direction electrode are both electrically connected to the intermediate layer.

[0016] Furthermore, the intermediate layer is a graphene film, which includes conductive carbon black and a TPU film.

[0017] Furthermore, the X-direction electrode and the Y-direction electrode each include a plurality of copper wires or silver wire conductive fabrics.

[0018] Furthermore, the backrest body has backrest side wings on both sides, the seat cushion has seat cushion side wings on both sides, and the seat cushion is provided with a leg rest;

[0019] The flexible pressure sensor is disposed on the cover of the side wings of the backrest, the cover of the side wings of the seat cushion, and the cover of the leg rest.

[0020] Furthermore, a control module is disposed on the vehicle, and the flexible pressure sensor is communicatively connected with the control module on the vehicle.

[0021] Compared with the prior art, the utility model has at least the following beneficial effects:

[0022] In the utility model, flexible pressure sensors are arranged on the inner side or interlayer of the seat cushion cover, the backrest main body cover, the shoulder support cover and the headrest cover. They are arranged in multiple directions and can detect passengers of different heights, weights and body shapes with high detection accuracy. In addition, during use, each flexible pressure sensor can feed back the information obtained to the control module on the car, which can be used for automatic adjustment of seat posture, for detecting whether the occupant has fastened the seat belt, and for controlling the explosion amount of the airbag according to the detection information of the flexible pressure sensor when the airbag explodes on the car seat. The flexible pressure sensor in this scheme can be glued and fixed to the foam, or glued and fixed to the inner surface of the cover or sewn in the interlayer of the cover. The assembly process is simple and easy to mass produce, and it does not need to occupy additional installation space on the car seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an exploded schematic diagram of the automobile seat of the utility model;

[0024] Figure 2 is a schematic diagram of an exploded view of a flexible pressure sensor;

[0025] Figure 3 It is a schematic diagram of the arrangement of the flexible pressure sensor on the seat cushion;

[0026] Figure 4 A schematic diagram of another arrangement of the flexible pressure sensor on the seat cushion;

[0027] Figure 5 is a schematic diagram of the arrangement of the flexible pressure sensor on the backrest;

[0028] Figure 6 It is a schematic diagram of the arrangement of the flexible pressure sensor on the headrest;

[0029] Figure 7 This is a schematic diagram of the arrangement of the flexible pressure sensor on the car seat (indicated by the dotted box).

[0030] In the figure:

[0031] 1. Seat cushion; 10. Seat cushion cover; 11. Seat cushion side wing;

[0032] 2. Backrest; 20. Backrest body; 21. Shoulder support; 200. Backrest body cover; 210. Shoulder support cover; 22. Backrest body side wing;

[0033] 3. Headrest; 30. Headrest cover;

[0034] 4. Flexible pressure sensor; 41. First attachment layer; 42. X-direction electrode; 43. Intermediate layer; 44. Y-direction electrode; 45. Second attachment layer;

[0035] 5. Leg support;

[0036] 50. Surface leather layer; 51. Surface composite layer; 52. Foaming;

[0037] 6. Seat cushion massage system;

[0038] 7. Backrest massage system. DETAILED DESCRIPTION

[0039] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0040] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] like Figure 1-Figure 7 As shown, a car seat equipped with a flexible pressure sensor mainly comprises: a seat cushion 1, a backrest 2, a headrest 3 and flexible pressure sensors 4 arranged at various positions.

[0045] The outer surface of the seat cushion 1 has a seat cushion cover 10. Specifically, the seat cushion 1 includes a seat cushion foam 52, and the seat cushion cover 10 is covered on the seat cushion foam 52. The seat cushion 1 has a seat cushion side wing 11 on each side, and the cover at the seat cushion side wing 11 and the cover in the middle of the seat cushion 1 are both provided with a flexible pressure sensor 4. Among them, the seat cushion 1 is provided with a leg rest 5, which is used to support the legs of the passenger, and the leg rest 5 can be extended and folded on the seat cushion 1. A flexible pressure sensor 4 is also provided on the cover of the leg rest 1 to ensure the detection range and detection accuracy of the flexible pressure sensor 4.

[0046] The backrest 2 is rotatably arranged on the seat cushion 1, and the backrest 2 includes a backrest main body 20 and a shoulder support 21, and the outer surface of the backrest main body 20 has a backrest main body surface cover 200, and the outer surface of the shoulder support 21 has a shoulder support surface cover 210. A backrest main body side wing 22 is also provided on both sides of the backrest main body 20, and flexible pressure sensors 4 are arranged on the backrest main body surface cover 200 and the shoulder support surface cover 210, wherein a flexible pressure sensor 4 is also arranged on the surface cover of the backrest main body side wing 22.

[0047] The headrest 3 is arranged on the backrest 2. Specifically, the headrest 3 can be lifted and lowered (two-way headrest) or can be arranged as a four-way headrest on the backrest 2. The outer surface of the headrest 3 has a headrest cover 30, and a flexible pressure sensor 4 is arranged on the headrest cover 30.

[0048] That is, in this embodiment, the flexible pressure sensor 4 is disposed at least on the inner side or interlayer of the seat cushion cover 10 , the backrest main body cover 200 , the shoulder support cover 210 and the headrest cover 30 .

[0049] like Figure 3-Figure 7 As shown, the flexible pressure sensor 4 of this embodiment is a resistive thin film flexible pressure sensor. The flexible pressure sensor 4 can be configured in the car seat in the following ways:

[0050] The first method: the structures on the car seat such as the seat cushion 1, the backrest 2 and the headrest 3 all include foam 52, the seat cushion cover 10 is covered on the foam of the seat cushion 1; the backrest main body cover 200 and the shoulder support cover 210 are covered on the foam of the backrest 2; the headrest cover 30 is covered on the foam of the headrest 3. The flexible pressure sensor 4 is glued and fixed on the foam 52, and is attached to the inner surface of the seat cushion cover 10, the backrest main body cover 200, the shoulder support cover 210 or the headrest cover 30. It is equivalent to the flexible pressure sensor 4 being indirectly configured on the inner surface of the cover.

[0051] The second method is that the flexible pressure sensor 4 is glued and fixed on the inner surfaces of the seat cushion cover 10, the backrest main body cover 200, the shoulder support cover 210 and the headrest cover 30, which is equivalent to the flexible pressure sensor 4 being directly glued on the inner surface of the cover. The flexible pressure sensor 4 can also be directly sewn on the inner surface of the corresponding cover.

[0052] The third mode: the seat cushion cover 10 , the backrest main body cover 200 , the shoulder support cover 210 and the headrest cover 30 all include a cover leather layer 50 and a cover composite layer 51 , and the flexible pressure sensor 4 is arranged between the cover leather layer 50 and the cover composite layer 51 .

[0053] No matter which of the above methods is selected to install the flexible pressure sensor 4 , the installation process of the flexible pressure sensor 4 can be ensured to be simple and easy to implement.

[0054] like Figure 2 As shown, the flexible pressure sensor 4 of this embodiment includes a first attachment layer 41, an X-direction electrode 42, an intermediate layer 43, a Y-direction electrode 44 and a second attachment layer 45. The X-direction electrode 42 is arranged on the first attachment layer 41, and the Y-direction electrode 44 is arranged on the second attachment layer 45. The first attachment layer 41 and the second attachment layer 45 can strengthen the structural strength of the X-direction and Y-direction electrodes, and as a carrier of the two, they have a protective effect on the two. The first attachment layer and the second attachment layer can be cloth. The intermediate layer 43 is arranged between the first attachment layer 41 and the second attachment layer 45, and the X-direction electrode 42 and the Y-direction electrode 44 are both electrically connected to the intermediate layer 43. Among them, the intermediate layer 43 is a graphene film, which includes conductive carbon black and TPU film. The X-direction electrode 42 and the Y-direction electrode 44 are cloths including multiple copper wires or multiple silver wires. The graphene film is electrically connected to the X-direction electrode 42 and the Y-direction electrode 44, and can play the role of the flexible pressure sensor 4 by detecting the resistance change on the graphene film. The X-direction electrode 42 and the Y-direction electrode 44 are connected to the seat module (or the vehicle control module) through the sensor driving module. The driving module of the flexible pressure sensor 4 is connected to the seat module (or the vehicle control module) through a communication protocol.

[0055] like Figure 1 As shown, optionally, the automobile seat of this embodiment further includes a seat cushion massage system 6 and a backrest massage system 7. The seat cushion massage system 6 includes multiple air bag massages and seat cushion side airbags, and the backrest massage system 7 includes multiple air bag lumbar supports and backrest side airbags.

[0056] In this solution, flexible pressure sensors 4 are arranged on the inner side or interlayer of the seat cushion cover 10, the backrest main body cover 200, the shoulder support cover 210 and the headrest cover 30. They are arranged in multiple directions, and can detect passengers of different heights, weights and body shapes with high detection accuracy. In addition, during use, each flexible pressure sensor 4 can feed back the acquired information to the control module on the car, which can be used for automatic adjustment of seat posture, for detecting whether the passenger has fastened the seat belt, and for controlling the explosion amount of the airbag according to the detection information of the flexible pressure sensor 4 when the airbag explodes on the car seat. The flexible pressure sensor 4 in this solution can be glued and fixed to the foam 52, or glued and fixed to the inner surface of the cover or sewn in the interlayer of the cover. The assembly process is simple and easy to mass produce, and it does not need to occupy other installation space on the car seat.

[0057] During use, in conjunction with the car's control module, the car seat of this embodiment can achieve long-term and stable prediction of human body shape (including weight and height, etc.). Based on the accurate prediction of body shape, the driving scene is simulated, and the accurate fatigue level is calculated to be the optimal seat posture. According to the classification of the occupants, whether there are passengers, and other information, it is transmitted to the vehicle control unit, and combined with whether the seat belt lock is buckled, a safety reminder is given. According to the classification of the occupants, the information is transmitted to the car control module, and the setting of the airbag explosion amount is accurately controlled to avoid secondary injuries. And according to the classification of the occupants, logical judgment input information is provided when the vehicle is automatically driving.

Claims

1. A car seat equipped with a flexible pressure sensor, characterized in that: include: A seat cushion, wherein the outer surface of the seat cushion has a seat cushion cover; A backrest, rotatably arranged on the seat cushion, the backrest comprising a backrest body and a shoulder support, wherein the outer surface of the backrest body has a backrest body cover, and the outer surface of the shoulder support has a shoulder support cover; A headrest, arranged on the backrest, wherein the outer surface of the headrest has a headrest cover; Wherein, flexible pressure sensors are arranged in the inner side surfaces or interlayers of the seat cushion cover, the backrest main body cover, the shoulder support cover and the headrest cover.

2. The vehicle seat equipped with a flexible pressure sensor according to claim 1, characterized in that: The flexible pressure sensor is a resistive thin film flexible pressure sensor.

3. The vehicle seat equipped with a flexible pressure sensor according to claim 1 or 2, characterized in that: The seat cushion, the backrest and the headrest all include foam, the seat cushion cover is coated on the foam of the seat cushion; the backrest main body cover and the shoulder support cover are coated on the foam of the backrest; the headrest cover is coated on the foam of the headrest; The flexible pressure sensor is adhered and fixed on the foam and is attached to the inner surface of the seat cushion cover or the backrest main body cover or the shoulder support cover or the headrest cover.

4. The vehicle seat equipped with a flexible pressure sensor according to claim 1 or 2, characterized in that: The flexible pressure sensor is adhesively fixed on the inner surfaces of the seat cushion cover, the backrest main body cover, the shoulder support cover and the headrest cover.

5. The vehicle seat equipped with a flexible pressure sensor according to claim 1 or 2, characterized in that: The seat cushion cover, the backrest main body cover, the shoulder support cover and the headrest cover all include a cover leather layer and a cover composite layer, and the flexible pressure sensor is arranged between the cover leather layer and the cover composite layer.

6. The vehicle seat equipped with a flexible pressure sensor according to claim 1, characterized in that: The flexible pressure sensor includes a first adhesion layer, an X-direction electrode, an intermediate layer, a Y-direction electrode and a second adhesion layer, wherein the X-direction electrode is arranged on the first adhesion layer, the Y-direction electrode is arranged on the second adhesion layer, the intermediate layer is arranged between the first adhesion layer and the second adhesion layer, and the X-direction electrode and the Y-direction electrode are both electrically connected to the intermediate layer.

7. The vehicle seat equipped with a flexible pressure sensor according to claim 6, characterized in that: The middle layer is a graphene film, which includes conductive carbon black and a TPU film.

8. The vehicle seat equipped with a flexible pressure sensor according to claim 6, characterized in that: The X-direction electrodes and the Y-direction electrodes each include a plurality of copper wires or silver wire conductive fabrics.

9. The vehicle seat equipped with a flexible pressure sensor according to claim 1, characterized in that: The backrest body has backrest side wings on both sides, the seat cushion has seat cushion side wings on both sides, and the seat cushion is provided with a leg support; The flexible pressure sensor is disposed on the cover of the side wings of the backrest, the cover of the side wings of the seat cushion, and the cover of the leg rest.

10. The vehicle seat equipped with a flexible pressure sensor according to claim 1, characterized in that: The car is equipped with a control module, and the flexible pressure sensor is communicatively connected with the control module on the car.

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