A seat ventilation system and fan-embedded seat back

Abstract

This utility model discloses a seat ventilation system and a fan-embedded seat back, relating to the field of vehicle technology. The fan-embedded seat back includes a frame, a foam layer, and a fabric layer. The foam layer, on its B-side (relative to the occupant), has a fan mounting cavity for installing a cooling fan and an air duct for communicating with the fabric layer. The air duct connects to the fan mounting cavity, allowing cooling airflow to enter the A-side (relative to the occupant) and then exit through the fabric layer. The foam layer is connected to a sealing plate to seal the air duct, and the sealing plate has a fan inlet for the cooling fan. This fan-embedded seat back embeds the cooling fan into the B-side of the foam layer and uses the air duct to guide the cooling airflow to the A-side of the foam layer for ventilation and cooling. It features a simple structure, convenient assembly, and low cost.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and more specifically, to a fan-embedded seat back. Furthermore, this utility model also provides a seat ventilation system including the aforementioned fan-embedded seat back. Background Technology

[0002] Seat ventilation systems are used to cool vehicle occupants through air convection. Existing seat ventilation systems mostly employ a ventilation bag structure. This involves a cooling fan creating negative pressure, drawing in outside air that passes through ventilation ducts and ventilation bags into the ventilation holes of a foam layer. The airflow is then guided from side B of the foam layer to side A, and finally blown through the fabric layer to the area around the occupant, completing heat exchange and achieving ventilation and cooling. However, these seat ventilation structures are complex, require complex assembly processes, and are costly.

[0003] In conclusion, how to reduce the cost of seat ventilation systems is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a fan-embedded seat back, in which a cooling fan is embedded and installed on the B side of the foam layer, and the cooling airflow is guided to the A side of the foam layer through the air duct to achieve ventilation and cooling. The structure is simple, the assembly is convenient, and the cost is low.

[0005] In addition, this utility model also provides a seat ventilation system including the above-mentioned fan-embedded seat back.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A fan-embedded seat back includes a frame, a foam layer, and a fabric layer. The foam layer has a fan mounting cavity for mounting a cooling fan and an air duct for communicating with the fabric layer on the B side, which is relatively far away from the occupant. The air duct is connected to the fan mounting cavity so that the cooling airflow enters the A side, which is relatively close to the occupant, through the air duct and then exits through the fabric layer.

[0008] The foam layer is connected to the sealing plate to seal the air duct, and the sealing plate is provided with a fan inlet for the cooling fan to enter.

[0009] Preferably, the fan mounting cavity is located in the upper middle part of the foam layer so that the cooling fan avoids the human body support area in the lower middle part of the foam layer for passengers to lean on.

[0010] Preferably, the air duct includes an annular air duct and a connecting air duct. The annular air duct is arranged around the fan mounting cavity, and the annular air duct is connected to the fan mounting cavity through the connecting air duct. One end of the connecting air duct is connected to the side wall of the fan mounting cavity.

[0011] Preferably, the depth of the annular air duct, the depth of the connecting air duct, and the depth of the fan mounting cavity are all the same, and the depth of the fan mounting cavity is greater than the height of the cooling fan.

[0012] Preferably, the connecting air ducts are evenly arranged along the circumferential direction of the fan mounting cavity, so that the connecting air ducts are radially arranged on the outer edge of the fan mounting cavity.

[0013] Preferably, both the annular air duct and the connecting air duct are arranged symmetrically with respect to the vertical plane of the fan mounting cavity, and both the annular air duct and the connecting air duct are arranged symmetrically with respect to the horizontal plane of the fan mounting cavity.

[0014] Preferably, the air duct is provided with a plurality of ventilation holes for communicating with the fabric layer, and the ventilation holes are all the same in shape and size.

[0015] Preferably, the size of the sealing plate is larger than the outer edge size of the air duct, and the sealing plate is bonded to the B side of the foam layer.

[0016] Preferably, the B side of the foam layer is provided with a sealing plate mounting groove for positioning the sealing plate, and the sealing plate is engaged in the sealing plate mounting groove.

[0017] A seat ventilation system includes a seat cushion and a seat back, wherein the seat back is a fan-embedded seat back as described in any of the preceding claims.

[0018] The fan-embedded seat back provided by this utility model embeds a cooling fan into the B side of the foam layer. The cooling airflow is guided to the A side of the foam layer through the air duct to achieve ventilation and cooling. This eliminates the need for existing ventilation pipes and ventilation bags, resulting in a simple structure, convenient assembly, and low cost.

[0019] In addition, this utility model also provides a seat ventilation system including the above-mentioned fan-embedded seat back. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of a specific embodiment of the fan-embedded seat back provided by this utility model.

[0022] Figure 1 middle:

[0023] 10-Foaming layer; 101-Fan mounting cavity; 102-Air duct; 103-Ventilation hole; 1-Cooling fan; 2-Sealing plate; 21-Fan air inlet. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The core of this utility model is to provide a fan-embedded seat back, in which a cooling fan is embedded and installed on the B side of the foam layer, and the cooling airflow is guided to the A side of the foam layer through the air duct to achieve ventilation and cooling. The structure is simple, easy to assemble, and low in cost.

[0026] In addition, this utility model also provides a seat ventilation system including the above-mentioned fan-embedded seat back.

[0027] The fan-embedded seat back provided by this utility model includes a frame, a foam layer 10 and a fabric layer. The foam layer 10 has a fan mounting cavity 101 for installing a cooling fan 1 and an air duct 102 for communicating with the fabric layer on the B side, which is relatively far away from the occupant. The air duct 102 is connected to the fan mounting cavity 101 so that the cooling airflow enters the A side, which is relatively close to the occupant, through the air duct 102 and then exits through the fabric layer.

[0028] The foam layer 10 is connected to the sealing plate 2 to seal the air duct 102. The sealing plate 2 is provided with a fan inlet 21 for the cooling fan 1 to enter.

[0029] The seat back includes a frame, a foam layer 10, and a fabric layer, wherein the frame is the supporting base of the seat back; the foam layer 10 fills the outside of the frame to provide a cushioning effect and improve the feel of the seat back; the fabric layer covers the outside of the foam layer 10 and is used to contact the occupant's skin or clothing.

[0030] The specific materials, structures, dimensions, and connection methods of the skeleton, foam layer 10, and fabric layer are determined based on the actual production needs and with reference to existing technologies, and will not be elaborated here.

[0031] The foam layer 10 includes an A side that is relatively close to the occupant and a B side that is relatively far away from the occupant. The A side is used for the occupant to lean against, and the B side is arranged opposite to the A side. Considering comfort and heat dissipation, the B side of the foam layer 10 is provided with a cooling fan 1 so as to blow ambient air that is relatively far away from the occupant to the occupant, thereby achieving the purpose of ventilation and cooling and improving the comfort of the occupant.

[0032] The model, type, and power of cooling fan 1 are determined based on the design flow rate of the cooling airflow of the seat back in actual production, and will not be elaborated here.

[0033] The cooling fan 1 can be clamped into the fan mounting cavity 101 of the foam layer 10 by interference fit, or it can be connected to the foam layer 10 on the outer edge of the fan mounting cavity 101 by common detachable connection methods such as bolt connection or pin connection, or it can be bonded into the fan mounting cavity 101.

[0034] In order to guide the cooling airflow of the cooling fan 1 to the A side of the foam layer 10, the B side of the foam layer 10 is provided with an air duct 102. The air duct 102 is connected to both the fabric layer and the fan mounting cavity 101. Therefore, the cooling airflow in the fan mounting cavity 101 can flow through the air duct 102 to the fabric layer on the A side, and finally blow towards the occupant through the fabric layer. It can be understood that the occupant here refers to the occupant space in front of the A side of the seat back.

[0035] Considering that the air duct 102 is set through the thickness direction of the foam layer 10, it has a significant impact on the strength and function of the foam layer 10 itself. In order to ensure the strength of the foam layer 10, it is preferable to set the air duct 102 to have a number of ventilation holes 103 for communicating with the fabric layer. The ventilation holes 103 are all the same in shape and size to facilitate the processing and manufacturing of the foam layer 10.

[0036] To reduce leakage of heat dissipation airflow, the B side of the foam layer 10 is connected to the sealing plate 2 to seal the air duct 102. The material of the sealing plate 2 is usually the same as that of the foam layer 10. At the same time, in order to enable the cooling fan 1 to work normally, the sealing plate 2 is provided with a fan inlet 21 for the cooling fan 1 to enter the air.

[0037] It is preferable to set the shape and size of the fan inlet 21 to be the same as the shape and size of the air inlet of the cooling fan 1, so as to avoid the sealing plate 2 blocking the air inlet of the cooling fan 1, which would reduce the actual power of the cooling fan 1 and affect its ventilation and cooling effect.

[0038] The sealing plate 2 can be connected to the foam layer 10 by adhesive bonding or by detachable connection methods such as bolt connection or pin connection, so as to facilitate the maintenance and replacement of the cooling fan 1.

[0039] In this embodiment, the cooling fan 1 is embedded and installed on the B side of the foam layer 10, and the cooling airflow is guided to the A side of the foam layer 10 through the air duct 102 to achieve ventilation and cooling. This eliminates the need for the existing ventilation pipe and ventilation bag structure, resulting in a simple structure, convenient assembly, and low cost.

[0040] For preferred options, please refer to [the provided text]. Figure 1 The fan mounting cavity 101 is located in the upper middle part of the foam layer 10 so that the cooling fan 1 avoids the human body support area in the lower middle part of the foam layer 10 for the occupant's waist to lean against, thereby improving the comfort of use and preventing the cooling fan 1 from colliding with the seat back panel in the lower middle part of the seat back. This effectively prevents the cooling fan 1 from being damaged by impact and helps to improve the service life of the cooling fan 1.

[0041] Based on the above embodiments, the structure of the air duct 102 is defined. The air duct 102 includes an annular air duct and a connecting air duct. The annular air duct is arranged around the fan mounting cavity 101. The annular air duct is connected to the fan mounting cavity 101 through the connecting air duct. One end of the connecting air duct is connected to the side wall of the fan mounting cavity 101.

[0042] It should be noted that the annular air duct here is not limited to a circular annular groove structure, but can also be set as a rectangular annular groove structure, a triangular annular groove structure, or any groove structure with the ends connected.

[0043] In this embodiment, the annular air duct surrounds the fan mounting cavity 101, which can expand the heat dissipation airflow outlet area corresponding to the A side of the foam layer 10. This not only makes the heat dissipation airflow blowing towards the occupants more uniform and reduces the unevenness of the heat dissipation airflow, but also helps to improve the ventilation and heat dissipation effect and further improve the comfort of the occupants.

[0044] Based on the above embodiments, in order to reduce the flow resistance of the cooling airflow, the depth of the annular air duct, the depth of the connecting air duct, and the depth of the fan mounting cavity 101 can all be the same, and the depth of the fan mounting cavity 101 is greater than the height of the cooling fan 1.

[0045] Considering that the flow channel length of the annular air duct is usually greater than that of the connecting air duct, the annular air duct has a greater impact on the structural strength of the foam layer 10. Therefore, the number of annular air ducts should not be too large. Usually, the foam layer 10 is provided with one or two annular air ducts, and adjacent two annular air ducts are connected by connecting air ducts.

[0046] The number of connecting air ducts is unlimited and can be set to one, two or more. The specific number is related to factors such as the size of the connecting air duct, the distance between the annular air duct and the fan mounting cavity 101, and the structural strength requirements of the foam layer 10.

[0047] When the number of connecting air ducts is greater than 1, preferably, the connecting air ducts can be arranged evenly along the circumference of the fan mounting cavity 101 so that the connecting air ducts are arranged radially on the outer edge of the fan mounting cavity 101, thereby improving the directional uniformity of the heat dissipation airflow in the annular air duct.

[0048] Therefore, it avoids the wind resistance caused by the height difference at the connection between the fan mounting cavity 101 and the connecting air duct, as well as the wind resistance caused by the height difference at the connection between the connecting air duct and the annular air duct. Under the premise that the power of the cooling fan 1 remains unchanged, it can effectively reduce the flow dissipation of the cooling airflow, increase the outlet wind speed of the cooling airflow, and thus improve the ventilation and cooling effect.

[0049] Preferably, both the annular air duct and the connecting air duct can be arranged symmetrically with respect to the vertical plane of the fan mounting cavity 101, and both the annular air duct and the connecting air duct can be arranged symmetrically with respect to the horizontal plane of the fan mounting cavity 101, such as... Figure 1 As shown, this is to improve the airflow uniformity of the air duct 102.

[0050] Based on the above embodiments, the connection method of the sealing plate 2 is limited. The size of the sealing plate is larger than the outer edge size of the air duct 102. The sealing plate 2 is bonded to the B side of the foam layer 10. The connection structure is simple, the assembly is convenient, and the sealing performance is good.

[0051] Preferably, the B side of the foam layer 10 can be provided with a sealing plate mounting groove for positioning the sealing plate 2. The sealing plate 2 is snapped into the sealing plate mounting groove, which can shorten the alignment process of the sealing plate 2 and effectively prevent the glue from overflowing when bonding the sealing plate 2.

[0052] In addition to the aforementioned fan-embedded seat backrest, this utility model also provides a seat ventilation system that includes the fan-embedded seat backrest disclosed in the above embodiments. The seat ventilation system includes a seat cushion and a seat backrest. For the structure of the seat cushion and other parts, please refer to the prior art, which will not be described in detail here.

[0053] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0054] The seat ventilation system and fan-embedded seat back provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A fan-embedded seat back, comprising a frame, a foam layer (10), and a fabric layer, characterized in that, The foam layer (10) has a fan mounting cavity (101) for installing a cooling fan (1) and an air duct (102) for communicating with the fabric layer on the B side, which is relatively far away from the occupant. The air duct (102) is connected to the fan mounting cavity (101) so that the cooling airflow enters the A side, which is relatively close to the occupant, through the air duct (102) and then exits through the fabric layer. The foam layer (10) is connected to the sealing plate (2) to seal the air duct (102), and the sealing plate (2) is provided with a fan inlet (21) for the cooling fan (1) to enter.

2. The fan-embedded seat backrest according to claim 1, characterized in that, The fan mounting cavity (101) is located in the upper middle part of the foam layer (10) so that the cooling fan (1) avoids the human body support area in the lower middle part of the foam layer (10) for the occupant's waist to lean against.

3. The fan-embedded seat backrest according to claim 1, characterized in that, The air duct (102) includes an annular air duct and a connecting air duct. The annular air duct is arranged around the fan mounting cavity (101). The annular air duct is connected to the fan mounting cavity (101) through the connecting air duct. One end of the connecting air duct is connected to the side wall of the fan mounting cavity (101).

4. The fan-embedded seat backrest according to claim 3, characterized in that, The depth of the annular air duct, the depth of the connecting air duct, and the depth of the fan mounting cavity (101) are all the same, and the depth of the fan mounting cavity (101) is greater than the height of the cooling fan (1).

5. The fan-embedded seat backrest according to claim 3, characterized in that, The connecting air ducts are uniformly arranged along the circumferential direction of the fan mounting cavity (101) so that the connecting air ducts are radially arranged on the outer edge of the fan mounting cavity (101).

6. The fan-embedded seat backrest according to claim 3, characterized in that, Both the annular air duct and the connecting air duct are arranged symmetrically with respect to the vertical plane of the fan mounting cavity (101), and both the annular air duct and the connecting air duct are arranged symmetrically with respect to the horizontal plane of the fan mounting cavity (101).

7. The fan-embedded seat back according to any one of claims 1-6, characterized in that, The air duct (102) is provided with a plurality of ventilation holes (103) for communicating with the fabric layer, and the ventilation holes (103) are all the same in shape and size.

8. The fan-embedded seat back according to any one of claims 1-6, characterized in that, The size of the sealing plate (2) is larger than the outer edge size of the air duct (102), and the sealing plate (2) is bonded to the B side of the foam layer (10).

9. The fan-embedded seat back according to claim 8, characterized in that, The B side of the foam layer (10) is provided with a sealing plate mounting groove for positioning the sealing plate (2), and the sealing plate (2) is engaged in the sealing plate mounting groove.

10. A seat ventilation system, characterized in that, It includes a seat cushion and a seat back, wherein the seat back is the fan-embedded seat back as described in any one of claims 1-9.

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