Multi-touch sensing seat back plate

Abstract

The utility model provides a multi-touch sensing seat back plate which comprises a polyurethane foaming layer and an epidermal layer, the epidermal layer comprises a fabric layer, a composite cotton layer and a plastic film layer which are sequentially arranged from outside to inside, the epidermal layer is laid on the inner surface of a lower mold cavity of the seat back plate, the plastic film layer is in contact with the polyurethane foaming layer, and the polyurethane foaming layer is in contact with the composite cotton layer. The seat back plate further comprises a gesture grabbing inductive switch, and the polyurethane foaming layer is formed in the seat back plate upper mold cavity and the seat back plate lower mold cavity in a pouring mode through sectional density foaming. The segmented density foaming polyurethane foaming layer serves as a main body of the seat back plate, multiple soft touch of the seat back plate is guaranteed, customization of different hardness of the seat back plate can be conducted according to the requirements of a user, and the use experience of the user is improved; the surface layer is arranged, so that the basic performances of the seat back plate, such as wear resistance, shock absorption, ventilation and waterproofness, are ensured; a gesture grabbing inductive switch is arranged on the rear side, when nobody sits on the front seat, a passenger on the rear seat can conveniently adjust the position of the seat, a larger space is obtained, and use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related technical field of automobile seat back plate, especially a kind of multi-touch sensing seat back plate. BACKGROUND

[0002] At present, the automobile chair back plate on market mainly has following several forms: face cover sewing type back plate, injection type back plate and injection+cladding back plate.Face cover sewing type back plate is difficult to realize complex modeling, sewing time is too long, labor cost is higher, and surface is prone to wrinkle.Injection type back plate is formed by PP, ABS and other materials injection molding, overall cost is higher, mold cost is also higher, and texture is relatively hard, cannot protect passenger's body more.Further, injection+cladding back plate overall cost is also higher, mold cost is also higher, and surface is cladded with a layer of soft fabric to achieve the purpose of multi-touch sensing seat back plate, the glue used in cladding will also greatly influence the odor and volatile organic matter, artificial cost and material cost will also greatly increase, adjustment button is mostly on the side of front row seat, and rear row personnel is not convenient to operate. SUMMARY

[0003] The utility model aims at providing a kind of multi-touch sensing seat back plate with low cost, simple manufacturing process and convenient adjustment.

[0004] Therefore, the utility model adopts the technical scheme as follows: a kind of multi-touch sensing seat back plate, including polyurethane foaming layer and the skin layer of the back side outer surface of polyurethane foaming layer, the skin layer includes sequentially arranged from front to back plastic film layer, composite cotton layer and fabric layer, the seat back plate further includes embedded in the gesture capture sensing switch for adjusting seat position of the back side of polyurethane foaming layer, the polyurethane foaming layer adopts sectional density foaming, and the density of the left and right sides of the polyurethane foaming layer is greater than the middle density.

[0005] As preferred of the above scheme, the fabric layer is made of light-transmitting fabric.

[0006] Further preferably, the composite cotton layer is made of polyurethane soft foam composite cotton with thickness between 1-6mm.

[0007] Further preferably, flame composite or glue spraying, glue film pasting composite are used between the fabric layer, composite cotton layer and plastic film layer.

[0008] Further preferably, the polyurethane foaming layer is further provided with lamp strip controlled by gesture capture sensing switch inside.

[0009] The utility model discloses a beneficial effect: polyurethane foaming layer adopts sectional type density foaming, and the density of both sides is greater than the density of the middle, the knee of the passenger of back seat is placed in the middle position of seat backboard, is more comfortable, and the density of both sides can protect the knee, protect the knee of back seat passenger, and different density can realize the different touch of the different parts of seat backboard, the skin layer is set to the rear side outer surface of polyurethane foaming layer, and the skin layer is sewn together with seat cover, guarantees the basic performance of seat backboard, such as wear resistance, shock attenuation, ventilation, waterproofness etc., gesture grabbing sensing switch is set to the rear side of polyurethane foaming layer, can identify the gesture of back seat passenger, adjusts the position of seat, obtains greater space, and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structure schematic diagram of the utility model.

[0011] Figure 2 It is the seat backboard installation state schematic diagram of the utility model. DETAILED DESCRIPTION

[0012] The utility model will be further described below in combination with the drawings and examples.

[0013] As Figures 1-2 The utility model discloses a kind of multi-touch sensing seat backboards, including polyurethane foaming layer 1 and the skin layer of the rear side outer surface of polyurethane foaming layer 1, fabric layer 2 is made of light-transmitting fabric.Light-transmitting fabric can use light-transmitting leather, polyurethane foaming layer 1 inside is further provided with the light strip 6 controlled by gesture grabbing sensing switch 5.Pattern is set on light-transmitting leather, when light is bright, pattern can appear, more beautiful, gesture grabbing sensing switch 5 is controlled by the light strip 6 set in polyurethane foaming layer 1, realize the lighting and closing of light.

[0014] The gesture grabbing sensing switch 5 is used to adjust the forward and backward movement of the seat and the up and down rotation of the seat backrest, so as to facilitate the rear passengers to adjust the position of the front seat and obtain more space. The gesture grabbing sensing switch 5 is a prior art, which can be realized in the following ways: ① A specific frequency of infrared signal is emitted through an infrared emitter tube, and when the gesture (such as grabbing or waving) blocks or reflects the signal, the receiving tube detects the change of the signal. ② The radar sensing switch emits microwave signals, and the air disturbance or object movement caused by the gesture action changes the frequency of the reflected signal (Doppler effect), and the action recognition is realized by calculating the frequency difference. This technology can penetrate obstacles such as glass and thin wood, and is suitable for complex environments. ③ The camera captures the gesture image, and the gesture contour and motion trajectory are extracted through image processing algorithms (such as edge detection and motion tracking). For example, when the gesture controls the car navigation, the system identifies the finger direction or grabbing action through the camera. ④ The ultrasonic sensor emits sound waves, and the gesture action causes the change of the reflection time or intensity of the sound waves, and the gesture position and action are judged by calculating the time difference or amplitude change.

[0015] The skin layer includes a plastic film layer 4, a composite cotton layer 3 and a fabric layer 2 arranged in sequence from front to back, and the seat backrest further includes a gesture grabbing sensing switch 5 embedded in the rear side of the polyurethane foam layer 1 for adjusting the position of the seat. The polyurethane foam layer 1 adopts segmented density foaming, and the density of the left and right sides of the polyurethane foam layer is greater than the middle density. The hardness of the left and right sides of the polyurethane foam layer is greater than the middle hardness, which can protect the knees of the rear passengers.

[0016] The composite cotton layer 3 adopts polyurethane soft foam composite cotton with a thickness of 1-6mm. The thickness of the composite cotton layer 3 is customized according to the user's needs. Flame lamination or glue spraying and film bonding are used between the fabric layer 2, the composite cotton layer 3 and the plastic film layer 4.

[0017] The flame lamination process has good environmental protection, does not need glue or chemical adhesive, and only realizes lamination through the viscosity generated by sponge combustion, reduces harmful gas and VOC emissions, and meets environmental protection requirements; and the material after lamination has natural soft touch, the combination between materials is tight, and delamination is not easy; and has good washing and dry cleaning performance.

[0018] The glue spraying process can realize efficient and uniform bonding, the glue spraying has high bonding strength, strong glue permeability, stable bonding force and high temperature and moisture resistance; can support customized glue film thickness and viscosity, and is compatible with various substrates (such as plastic, non-woven fabric and aluminum plated film).

[0019] The film pasting process is simple and efficient, and the film is combined by hot pressing or coating, without the need for complex equipment and with a short production cycle. The film has good durability and stability, and the hot melt adhesive or PUR film has excellent tensile strength and temperature resistance after curing. The new film (such as low VOC polyurethane composite agent) can reduce smoke and harmful substances, meeting the strict environmental protection standards of automotive interiors. The film supports multi-layer composite (such as cloth + film + cloth), and can improve the surface friction coefficient or flame retardance through techniques such as powdering and rolling.

[0020] In the process of making the seat back plate, the fabric layer 2, the composite cotton layer 3 and the plastic film layer 4 are all flame-combined or glued and film-pasted to form a skin layer. The skin layer is laid on the inner surface of the lower mold cavity of the seat back plate, and the plastic film layer 4 is in contact with the polyurethane foam layer 1, which can prevent the polyurethane foam material from penetrating into the composite cotton layer 3 and the fabric layer 2, thereby avoiding the influence of the polyurethane foam material on the hardness of the composite cotton layer 3 and the fabric layer 2. The gesture grabbing sensing switch 5 and the lamp strip are fixedly arranged in the lower mold cavity of the seat back plate, and then the mold is closed and poured. The polyurethane foam layer is poured by using a segmented density foaming method to adjust the different densities of different positions of the seat back plate, so that different positions of the seat back plate have different hardness. The specific hardness is customized according to the customer's requirements. The gesture grabbing sensing switch 5 is arranged in the polyurethane foam layer 1. When the front seat is not occupied, the rear seat passenger can adjust the seat position of the front seat through the gesture grabbing sensing switch 5, thereby obtaining more space.

[0021] As shown in Figure 2 After the seat back plate is made, the polyurethane foam layer 1 is placed inside the seat cover towards the front side of the seat, and then the skin layer is sewn with the seat cover to complete the installation of the seat back plate.

[0022] After the seat back plate is installed in the seat cover, the two side positions of the seat back plate made by the segmented density foaming method are higher than the middle position, and the density of the polyurethane foam layer 1 at the two side positions is large and the hardness is high, serving as a support area 7. The density of the polyurethane foam layer 1 at the middle position is small and the hardness is low, being relatively soft, serving as a comfortable area 8, which is convenient for protecting the knees of the passenger placed in the middle position. The gesture grabbing sensing switch 5 includes an inductive area 501 arranged at the upper right corner of the back of the car seat. The gesture grabbing sensing switch 5 identifies the gesture through the inductive area 501 and controls the car seat to move.

[0023] The segmented density foaming polyurethane foaming layer 1 is used for pouring and forming, and is used as the main body of the seat back plate, so that the different touch of different parts of the seat back plate is realized, the multiple soft touch of the seat back plate is ensured, the seat back plate with different softness can be customized according to the needs of users when the seat back plate is manufactured, and the use experience of users is improved; the skin layer is arranged on the front side outer surface of the polyurethane foaming layer 1, and the basic performance of the seat back plate is ensured, such as wear resistance, shock absorption, air permeability, waterproofness and the like; the gesture grabbing sensing switch 5 is arranged on the rear side of the polyurethane foaming layer 1, when the front seat is not occupied, the rear seat passenger can conveniently adjust the seat position to obtain a larger space and use conveniently.

[0024] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A multi-touch sensing seat back panel, characterized by: The seat back plate comprises a polyurethane foaming layer (1) and a skin layer arranged on the outer surface of the rear side of the polyurethane foaming layer (1), the skin layer comprises a plastic film layer (4), a composite cotton layer (3) and a fabric layer (2) arranged in sequence from front to back, the seat back plate further comprises a gesture grabbing sensing switch (5) embedded and arranged on the rear side of the polyurethane foaming layer (1) for adjusting the position of the seat, the polyurethane foaming layer (1) is foamed in a segmented density, and the density of the left and right sides of the polyurethane foaming layer (1) is greater than the density of the middle.

2. The multi-touch sensing seat back panel of claim 1, wherein: The fabric layer (2) is made of light-transmitting fabric.

3. A multi-touch sensing seat back panel according to claim 2, wherein: The composite cotton layer (3) is made of polyurethane soft foam composite cotton with a thickness of 1-6 mm.

4. The multi-touch sensing seat back panel of claim 3, wherein: The fabric layer (2), the composite cotton layer (3) and the plastic film layer (4) are all flame-combined or sprayed, glued and film-pasted.

5. The multi-touch sensing seat back panel of claim 2, wherein: The polyurethane foaming layer (1) is further provided with a lamp strip (6) controlled to be turned on or off by the gesture grabbing sensing switch (5).

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