A seat ventilation system, a seat cushion assembly and a seat cushion ventilation device

Abstract

This utility model discloses a seat ventilation system, a seat cushion assembly, and a seat cushion ventilation device, relating to the field of automotive technology. The seat cushion ventilation device includes a cooling fan and a ventilation bag disposed on the bottom surface of a foam layer. The top surface of the ventilation bag has ventilation holes for gas exchange with the foam layer, and the bottom surface of the ventilation bag has an air inlet. The cooling fan is sealed to the air inlet via a seat cushion suspension spring. The sealed connection between the cooling fan and the air inlet of the ventilation bag, compared to existing flexible ventilation duct connections, not only simplifies the structure of the ventilation device but also significantly reduces the wind resistance of the ventilation device by shortening the airflow path, thereby reducing flow loss, improving energy utilization, and effectively reducing power consumption.

Description

Technical Field

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

[0002] Seat ventilation systems can ventilate and cool occupants through air convection, and mainly consist of two parts: the seat cushion assembly and the backrest assembly.

[0003] The seat cushion assembly includes a ventilation module, a frame, a foam layer covering the frame, a seat cushion suspension spring located at the bottom of the foam layer, and a fabric layer covering the foam layer. The existing ventilation module includes a cooling fan, a flexible ventilation duct, and a ventilation bag. The cooling fan is fixedly mounted on the base suspension spring, and the ventilation bag is adhered to the bottom of the foam layer and connected to it. The air outlet of the cooling fan is connected to the air inlet of the ventilation bag through the flexible ventilation duct. The flexible ventilation duct increases the resistance of the ventilation module, requiring higher air pressure from the cooling fan and resulting in higher power consumption.

[0004] In conclusion, how to reduce the power consumption of the seat cushion assembly ventilation module is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a seat cushion ventilation device, in which the cooling fan and the air inlet of the ventilation bag are sealed together. The connection structure is simple and easy to assemble, and the airflow path is shortened. By reducing wind resistance, power consumption is effectively reduced.

[0006] In addition, this utility model also provides a seat cushion assembly including the above-mentioned seat cushion ventilation device and a seat ventilation system including the above-mentioned seat cushion assembly.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A seat cushion ventilation device includes a cooling fan and a ventilation bag disposed on the bottom surface of a foam layer. The top surface of the ventilation bag is provided with ventilation holes for gas exchange with the foam layer, and the bottom surface of the ventilation bag is provided with an air inlet. The cooling fan is sealed to the air inlet through a seat cushion suspension spring.

[0009] Preferably, the bottom surface of the seat cushion suspension spring is provided with bolt mounting holes for installing fastening screws, and the mounting plate of the cooling fan is provided with bolt connection holes for installing fastening screws.

[0010] Preferably, the bottom surface of the seat cushion suspension spring is provided with at least two positioning posts, the mounting plate is provided with positioning holes that engage with the positioning posts, and the center lines of at least two of the positioning holes are not parallel to the edge lines of the mounting plate.

[0011] Preferably, the positioning holes and the bolt connection holes are evenly arranged along the circumference of the mounting plate, and the positioning holes and the bolt connection holes are diagonally arranged.

[0012] Preferably, a first sealing ring is provided between the bottom surface of the seat cushion suspension spring and the air outlet of the cooling fan, and the first sealing ring is snapped into the first sealing groove of the seat cushion suspension spring.

[0013] Preferably, a second sealing ring is provided between the top surface of the seat cushion suspension spring and the bottom surface of the ventilation bag, and the second sealing ring is snapped into the second sealing groove of the seat cushion suspension spring.

[0014] Preferably, the ventilation bag includes a main body with ventilation holes and an adhesive edge on the outer edge of the main body, and the ventilation bag is bonded to the bottom surface of the foam layer through the adhesive edge.

[0015] Preferably, the ventilation bag array has a plurality of ventilation holes, and the ventilation holes of the ventilation bag correspond one-to-one with the ventilation holes of the foam layer.

[0016] A seat cushion assembly includes a frame, a seat cushion spring, a foam layer, a fabric layer, and a ventilation module. The foam layer is sleeved outside the frame, the seat cushion spring is disposed at the bottom of the foam layer, the fabric layer is sleeved outside the foam layer, and the ventilation module is any of the seat cushion ventilation devices described above.

[0017] A seat ventilation system includes a seat cushion assembly and a backrest assembly, wherein the seat cushion assembly is the seat cushion assembly described above.

[0018] The seat cushion ventilation device provided by this utility model has a sealed connection between the cooling fan and the air inlet of the ventilation bag. Compared with the existing flexible ventilation pipe connection, it not only simplifies the structure of the ventilation device, but also significantly reduces the wind resistance of the ventilation device by shortening the airflow path of the cooling airflow, thereby reducing the flow loss of the ventilation device, improving the energy utilization rate of the ventilation device, and effectively reducing the power consumption of the ventilation device.

[0019] In addition, this utility model also provides a seat assembly including the above-mentioned seat cushion ventilation device and a seat ventilation system including the above-mentioned seat cushion assembly. 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 An exploded view of a specific embodiment of the seat cushion ventilation device provided by this utility model.

[0022] Figure 1 middle:

[0023] 10-Foam layer; 20-Seat cushion suspension spring; 1-Cooling fan; 2-Ventilation bag. 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 seat cushion ventilation device, in which the cooling fan and the air inlet of the ventilation bag are sealed together. The connection structure is simple and easy to assemble, and the airflow path is shortened. By reducing wind resistance, power consumption is effectively reduced.

[0026] In addition, this utility model also provides a seat cushion assembly including the above-mentioned seat cushion ventilation device and a seat ventilation system including the above-mentioned seat cushion assembly.

[0027] The seat cushion ventilation device provided by this utility model includes a cooling fan 1 and a ventilation bag 2 disposed on the bottom surface of the foam layer 10. The top surface of the ventilation bag 2 is provided with ventilation holes for gas exchange with the foam layer 10, and the bottom surface of the ventilation bag 2 is provided with an air inlet. The cooling fan 1 is sealed to the air inlet through a seat cushion suspension spring 20.

[0028] The cooling fan 1 is installed in the fan mounting hole of the seat cushion spring 20. The air outlet of the cooling fan 1 is fitted into the fan mounting hole of the seat cushion spring 20. The fan mounting hole is connected to the air inlet of the ventilation bag 2. Therefore, when the cooling fan 1 and the seat cushion spring 20 are installed in place, the cooling fan 1 and the air inlet of the ventilation bag 2 are sealed together.

[0029] The cooling fan 1 and the seat cushion suspension spring 20 can be connected by non-removable methods such as welding and bonding, or by common detachable connection methods such as screw connection and pin connection, so as to facilitate the maintenance and replacement of the cooling fan 1.

[0030] The specific type, model, and power of the cooling fan 1 are determined based on factors such as the design airflow speed of the seat cushion assembly, the internal structure and air resistance of the ventilation bag 2, and the internal structure and air resistance of the foam layer 10 and the upper fabric layer in actual production, so as to ensure that the cooling fan 1 can meet the ventilation and cooling needs.

[0031] Ventilation bag 2 is located on the bottom surface of foam layer 10. Preferably, ventilation bag 2 is designed to conform to the shape of foam layer 10, so that the shape of ventilation bag 2 is adapted to the shape of foam layer 10, and the ventilation bag 2 is not affected by the flatness of foam layer 10 and the fabric layer above it, thereby affecting the comfort and aesthetics of the seat cushion assembly.

[0032] The ventilation bag 2 can be adhered to the bottom surface of the foam layer 10, or it can be detachably connected to the foam layer 10 or even the skeleton inside the foam layer 10 by fastening screws, connecting pins, etc.

[0033] The bottom surface of the ventilation bag 2 abuts against the top surface of the seat cushion spring 20, and the air inlet of the ventilation bag 2 is set directly opposite the fan mounting hole of the seat cushion spring 20 so that the heat dissipation airflow can enter the ventilation bag 2 through the air outlet of the cooling fan 1, the fan mounting hole of the seat cushion spring 20 and the air inlet of the ventilation bag 2.

[0034] Since the ventilation bag 2 is located between the foam layer 10 and the seat cushion spring 20, under the weight of the ventilation bag 2 itself, the weight of the foam layer 10 and the upper fabric layer, and the downward pressure of the occupant, the ventilation bag 2 is tightly attached to the top surface of the seat cushion spring 20. It can be roughly regarded as the ventilation bag 2 sealingly abutting against the outer edge of the fan mounting hole of the seat cushion spring 20, so that the air inlet of the ventilation bag 2 is sealed and connected to the fan mounting hole of the seat cushion spring 20. Usually, there are no fastening screws, connecting pins or other connecting parts between the ventilation bag 2 and the seat cushion spring 20.

[0035] The top surface of the ventilation bag 2 is provided with several ventilation holes, which are connected to the ventilation holes of the foam layer 10. Therefore, the heat dissipation airflow can flow through the ventilation holes of the ventilation bag 2 and the ventilation holes of the foam layer 10 to the A side of the foam layer 10 that is in contact with the occupants, and then blown to the occupant area through the fabric layer, achieving the ventilation and cooling effect through airflow exchange.

[0036] The specific shape of the ventilation holes is not limited; they can be round, elliptical, rectangular, etc. The distribution of the ventilation holes will affect the uniformity of airflow from the seat assembly. The size and distribution of the ventilation holes are determined based on factors such as the design airflow speed of the seat assembly in actual production, and will not be elaborated here.

[0037] Preferably, the ventilation bag 2 can be provided with a number of ventilation holes in the hole array. The ventilation holes of the ventilation bag 2 are provided in a one-to-one correspondence with the ventilation holes of the foam layer 10. Typically, the shape, size and distribution of the ventilation holes of the ventilation bag 2 are the same as the shape, size and distribution of the ventilation holes of the foam layer 10, so as to reduce airflow loss at the connection between the ventilation holes and the ventilation holes.

[0038] In this embodiment, the cooling fan 1 and the air inlet of the ventilation bag 2 are sealed together. Compared with the existing flexible ventilation duct connection, this not only simplifies the structure of the ventilation device, but also significantly reduces the wind resistance of the ventilation device by shortening the airflow path of the cooling airflow, thereby reducing the flow loss of the ventilation device, improving the energy utilization rate of the ventilation device, and effectively reducing the power consumption of the ventilation device.

[0039] Based on the above embodiments, the connection method between the seat cushion suspension spring 20 and the cooling fan 1 is defined. The bottom surface of the seat cushion suspension spring 20 is provided with bolt mounting holes for installing fastening screws, and the mounting plate of the cooling fan 1 is provided with bolt connection holes for installing fastening screws, such as... Figure 1 As shown, the connection structure is simple, easy to disassemble and assemble, which is beneficial for future maintenance and replacement, and the connection strength is high, ensuring the installation stability of the cooling fan 1.

[0040] Preferably, in order to facilitate the quick alignment of the cooling fan 1 and the seat cushion spring 20, the bottom surface of the seat cushion spring 20 can be provided with at least two positioning posts, the mounting plate is provided with positioning holes that engage with the positioning posts, and the center lines of at least two positioning holes are not parallel to the edge lines of the mounting plate.

[0041] The shape of the positioning post is not limited, and it can be set as a cylindrical positioning post, a frustum positioning post, a prism positioning post, etc. The shape of the positioning hole is adapted to the shape of the positioning post. The specific dimensions of both need to be determined according to the size of the mounting plate of the cooling fan 1 in actual production. On the basis of ensuring the connection strength, the setting position of the positioning hole should be avoided from affecting the structural strength of the mounting plate or even the cooling fan 1.

[0042] Considering that the cooling fan 1 is usually rectangular, in order to effectively position it in both the length and width directions, the center lines of at least two positioning holes on the mounting plate of the cooling fan 1 are not parallel to the edge lines of the mounting plate, so as to avoid the two positioning holes being located on the same side of the positioning plate, so that the positioning holes can only effectively position the positioning plate in one direction.

[0043] Preferably, the positioning holes and bolt connection holes can be evenly arranged along the circumference of the mounting plate, and the positioning holes and bolt connection holes are all diagonally arranged.

[0044] Based on the above embodiments, in order to improve the sealing performance between the seat cushion spring 20 and the cooling fan 1, a first sealing ring can be provided between the bottom surface of the seat cushion spring 20 and the air outlet of the cooling fan 1, and the first sealing ring is engaged in the first sealing groove of the seat cushion spring 20.

[0045] By utilizing the snap-fit ​​between the first sealing ring and the first sealing groove, the gap between the bottom surface of the seat cushion suspension spring 20 and the air outlet of the cooling fan 1 can be effectively sealed, preventing the cooling airflow from leaking out of the gap between the two, which helps to reduce the loss of cooling airflow and thus reduce the power consumption of the cooling fan 1.

[0046] Preferably, a second sealing ring can be provided between the top surface of the seat cushion spring 20 and the bottom surface of the ventilation bag 2. The second sealing ring is snapped into the second sealing groove of the seat cushion spring 20 so as to effectively prevent the heat dissipation airflow from leaking from the gap between the two by using the second sealing ring to seal the gap between the ventilation bag 2 and the seat cushion spring 20, which is conducive to further reducing the power consumption of the cooling fan 1.

[0047] The first and second sealing rings can be specifically set as rubber sealing rings, sponge sealing rings, etc. The specific dimensions of the two sealing rings are determined according to the specific structure and dimensions of the ventilation bag 2, seat cushion suspension spring 20 and cooling fan 1 in actual production, which will not be elaborated here.

[0048] Based on the above embodiments, the connection method between the ventilation bag 2 and the foam layer 10 is defined. The ventilation bag 2 includes a main body with ventilation holes and an adhesive edge located on the outer edge of the main body. The ventilation bag 2 is bonded to the bottom surface of the foam layer 10 through the adhesive edge. By reserving the adhesive edge, the problem of glue clogging the ventilation holes is reduced or avoided.

[0049] This utility model also provides a seat cushion assembly including the seat cushion ventilation device disclosed in the above embodiments. The seat cushion assembly includes a frame, a seat cushion suspension spring 20, a foam layer 10, a fabric layer, and a ventilation module. The foam layer 10 is sleeved outside the frame, the seat cushion suspension spring 20 is disposed at the bottom of the foam layer 10, the fabric layer is sleeved outside the foam layer 10, and the ventilation module is the seat cushion ventilation device disclosed in the above embodiments. For the structure of other parts of the seat cushion assembly, please refer to the prior art, which will not be described in detail here.

[0050] In addition, this utility model also provides a seat ventilation system including the seat cushion assembly disclosed in the above embodiments. The seat ventilation system includes a seat cushion assembly and a backrest assembly. The seat cushion assembly is the seat cushion assembly disclosed in the above embodiments. The structure of the backrest assembly is determined by referring to the prior art, and will not be described in detail here.

[0051] It should be noted that the references to the first sealing ring and the second sealing ring, and the first and second sealing grooves in the first sealing groove and the second sealing groove, are only used to distinguish the different positions and do not limit the order.

[0052] 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.

[0053] The seat ventilation system, seat cushion assembly, and seat cushion ventilation device 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 seat cushion ventilation device, characterized in that, It includes a cooling fan (1) and a ventilation bag (2) located on the bottom surface of the foam layer (10). The top surface of the ventilation bag (2) is provided with ventilation holes for gas exchange with the foam layer (10), and the bottom surface of the ventilation bag (2) is provided with an air inlet. The cooling fan (1) is sealed to the air inlet through a seat cushion suspension spring (20).

2. The seat cushion ventilation device according to claim 1, characterized in that, The bottom surface of the seat spring (20) is provided with bolt mounting holes for installing fastening screws, and the mounting plate of the cooling fan (1) is provided with bolt connection holes for installing fastening screws.

3. The seat cushion ventilation device according to claim 2, characterized in that, The bottom surface of the seat cushion suspension spring (20) is provided with at least two positioning posts, the mounting plate is provided with positioning holes that engage with the positioning posts, and the center lines of at least two of the positioning holes are not parallel to the edge lines of the mounting plate.

4. The seat cushion ventilation device according to claim 3, characterized in that, The positioning holes and the bolt connection holes are evenly arranged along the circumference of the mounting plate, and the positioning holes and the bolt connection holes are all diagonally arranged.

5. The seat cushion ventilation device according to any one of claims 1-4, characterized in that, A first sealing ring is provided between the bottom surface of the seat cushion spring (20) and the air outlet of the cooling fan (1), and the first sealing ring is snapped into the first sealing groove of the seat cushion spring (20).

6. The seat cushion ventilation device according to claim 5, characterized in that, A second sealing ring is provided between the top surface of the seat cushion spring (20) and the bottom surface of the ventilation bag (2), and the second sealing ring is snapped into the second sealing groove of the seat cushion spring (20).

7. The seat cushion ventilation device according to any one of claims 1-4, characterized in that, The ventilation bag (2) includes a main body with ventilation holes and an adhesive edge on the outer edge of the main body. The ventilation bag (2) is bonded to the bottom surface of the foam layer (10) through the adhesive edge.

8. The seat cushion ventilation device according to any one of claims 1-4, characterized in that, The ventilation bag (2) array is provided with a plurality of ventilation holes, and the ventilation holes of the ventilation bag (2) are provided in a one-to-one correspondence with the ventilation holes of the foam layer (10).

9. A seat cushion assembly, characterized in that, The device includes a frame, a seat spring (20), a foam layer (10), a fabric layer, and a ventilation module. The foam layer (10) is fitted over the frame, the seat spring (20) is located at the bottom of the foam layer (10), the fabric layer is fitted over the foam layer (10), and the ventilation module is the seat ventilation device according to any one of claims 1-8.

10. A seat ventilation system, characterized in that, It includes a seat cushion assembly and a backrest assembly, wherein the seat cushion assembly is the seat cushion assembly as described in claim 9.

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