Automotive seat ventilation system

Abstract

To provide a ventilation system that improves the ventilation effect of an automobile seat. [Solution] The automobile seat has a first ventilation section (4) on the side closest to the human body and a first space on the other side, both of which communicate with a ventilation system, a fan structure installed inside the automobile seat and including a first fan (1) and a second fan (2) connected in a stacked manner, the first fan configured to blow air into the first ventilation section and the second fan configured to draw air from the first ventilation section into the interior of the automobile seat, and a ventilation structure is also installed inside the automobile seat, the ventilation structure including a first communication section (3) with one end communicating with the first ventilation section and the other end communicating with the first and second fans. When the ventilation system is in use, the ventilation system can be freely switched between an air intake state and an air blowing state by controlling the on / off of the first and second fans.

Description

[Technical Field]

[0001] The present application is in the technical field of vehicle seat ventilation, and specifically relates to a vehicle seat ventilation system. [Background technology]

[0002] With the development of science and technology, the demand for comfort in daily life is increasing. When air circulation is restricted in a space with limited volume due to weather or environmental factors, it is difficult to expel sweat and causes discomfort to the human body. In such cases, a ventilation system is needed to promote air circulation within the space.

[0003] Currently, an integrated ventilation fan that can achieve both blowing and suction modes is installed inside the ventilation system to ventilate the car seats, but the fan cannot achieve optimal results in the two modes when switching between blowing and suction, resulting in poor ventilation efficiency and effectiveness. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of the above deficiencies or shortcomings in the prior art, there is a need for a ventilation system for an automobile seat that can solve the above technical problems. [Means for solving the problem]

[0005] The present application provides a ventilation system for a vehicle seat, the vehicle seat being provided with a first ventilation part on a side close to a human body and a first space on a side away from the human body, the first ventilation part and the first space both communicating with the ventilation system, the ventilation system for the vehicle seat including a fan structure and a ventilation structure, the fan structure being installed inside the vehicle seat and including a first fan and a second fan, the first fan and the second fan being stacked and fixed and communicating with each other through air passages, the first fan being configured to blow air to the first ventilation part, and the second fan being configured to suck air from the first ventilation part into the first space, the ventilation structure being installed inside the vehicle seat. a ventilation system having a first state and a second state, wherein when the ventilation system is in the first state, the first fan is off and the second fan is on, and airflow is driven by the second fan to flow from the first ventilation part to the first space via the first fan and the second fan; and when the ventilation system is in the second state, the first fan is on and the second fan is off, and airflow is driven by the first fan to flow from the first space to the first ventilation part via the second fan and the first fan.

[0006] Based on the technical solution of the present application, an occupant support layer is installed inside the automobile seat, and the ventilation structure includes a first communication part, which is provided in the occupant support layer and located on the side of the occupant support layer away from the human body, and one side of the first communication part is connected to the first fan and the second fan, and the other side is connected to the first ventilation part.

[0007] According to the technical solution of the present application, the ventilation structure further includes a second communication portion, the second communication portion penetrates the occupant support layer, one side of the second communication portion communicates with the first ventilation portion and the other side of the second communication portion communicates with the first communication portion, when the ventilation system is in the first state, the airflow is driven by the second fan and flows from the first ventilation portion to the first space via the second communication portion, the first communication portion, the first fan and the second fan in this order, and when the ventilation system is in the second state, the airflow is driven by the first fan and flows from the first space via the second fan, the first fan, the first communication portion and the second communication portion in this order to the first ventilation portion.

[0008] Based on the technical solution of the present application, the first fan is installed in the first communication portion and fixedly connected to the occupant support layer, and the first fan and the second fan are connected by a connection structure, which is intended to ensure airtightness and stability of the connection between the first fan and the second fan.

[0009] Based on the technical proposal of the present application, the connection structure is a first blind rivet, the first blind rivet is installed by penetrating the first fan and the second fan, and the first blind rivet is for fixedly connecting the first fan and the second fan.

[0010] Based on the technical solution of the present application, an elastic sealing member is installed between the first fan and the second fan, and the elastic sealing member is for ensuring airtightness between the first fan and the second fan.

[0011] Based on the technical solution of the present application, a back spring is installed on the side of the automobile seat away from the human body, the second fan is installed on the side of the back spring away from the first fan, the connection structure is a connecting pipe and a second blind rivet, one end of the second blind rivet is connected to the first fan through the connecting pipe, and the other end penetrates the back spring and is connected to the second fan.

[0012] According to the technical solution of the present application, the second fan and the back spring are fixedly connected.

[0013] According to the technical solution of the present application, the fan structure has a housing, and the first fan and the second fan are connected by the housing.

[0014] According to the technical solution of the present application, the first fan is an axial fan or a centrifugal fan, and the second fan is the axial fan or the centrifugal fan. [Effects of the Invention]

[0015] The present application has the following beneficial effects:

[0016] This application provides a ventilation system for a vehicle seat. The vehicle seat has a first ventilation section on a side close to the human body and a first space on a side away from the human body, both of which communicate with the ventilation system. A fan structure is installed inside the vehicle seat and includes a first fan and a second fan, the first fan and the second fan being fixedly connected, the first fan configured to blow air into the first ventilation section, and the second fan configured to draw air from the first ventilation section into the interior of the vehicle seat. A ventilation structure is also installed inside the vehicle seat, one end of the ventilation structure communicating with the first ventilation section and the other end communicating with the first fan and the second fan. When using the ventilation system, the ventilation system can be freely switched between an intake state and a blowing state by controlling the on / off of the first fan and the second fan. Compared with the prior art, the present application has an optimized design of installing two independent fans for air blowing and air suction respectively, which can achieve optimal effects in both modes, thereby ensuring ventilation efficiency and improving ventilation effect.

[0017] Other features, objects and advantages of the present application will become more apparent from the detailed description of the non-limiting examples which follow and which are considered in conjunction with the drawings in which: [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic diagram of a ventilation system for a vehicle seat according to the present application; [Figure 2] 1 is a schematic diagram of the ventilation system of the first type automobile seat according to the present application in an air intake state. [Figure 3] 1 is a schematic diagram of a ventilation system of a first type automobile seat according to the present application in a blowing state. [Figure 4] 4A and 4B are schematic diagrams illustrating the first and second fans operating in a first state and a second state, respectively. [Figure 5] 2 is a schematic diagram showing a state in which the first fan and the second fan in FIG. 1 are connected to each other. FIG. [Figure 6] FIG. 2 is a schematic exploded view of the ventilation system of the second type automobile seat according to the present application in a blowing state. [Figure 7] FIG. 4 is a schematic exploded view of the first fan and the second fan in FIG. 3 in a state where they are connected by a first blind rivet. [Figure 8] FIG. 2 is a schematic exploded view of the ventilation system of the third type automobile seat according to the present application in a blowing state. [Figure 9] FIG. 10 is a schematic exploded view of the ventilation system of the third type automobile seat according to the present application in an air intake state. [Figure 10] FIG. 4 is a schematic diagram of a combination of a first fan and a second fan. [Figure 11] FIG. 4 is a schematic diagram showing the connection between first centrifugal fans. [Figure 12] FIG. 2 is a schematic diagram of a configuration in which a first centrifugal fan and a second centrifugal fan are connected by a housing. [Figure 13] FIG. 4 is a schematic diagram showing the connection between the first centrifugal fan and the second centrifugal fan. [Figure 14] FIG. 2 is a schematic diagram of a configuration in which a first centrifugal fan and a second centrifugal fan are connected by a housing. [Figure 15] FIG. 4 is a schematic diagram showing the connection between the axial fan and the second centrifugal fan. [Figure 16] FIG. 10 is a schematic diagram of a configuration in which an axial fan and a second centrifugal fan are connected by a housing. [Figure 17] FIG. 4 is a schematic diagram showing the connection between the axial fan and the first centrifugal fan. [Figure 18] FIG. 2 is a schematic diagram of a configuration in which an axial fan and a first centrifugal fan are connected by a housing. DETAILED DESCRIPTION OF THE INVENTION

[0019] The present application will be described in more detail below with reference to the drawings and examples. The specific examples described herein are merely for the purpose of illustrating the related inventions, and are not intended to limit the inventions. For the sake of convenience, only parts relevant to the inventions are shown in the drawings.

[0020] The embodiments of the present application and the features in the embodiments can be combined with each other unless there is a contradiction.The present application will be described in detail below using examples with reference to the drawings.

[0021] Example 1 As shown in Figures 1 to 18, the present application provides a ventilation system for a vehicle seat. A vehicle seat 15 is provided with a first ventilation section 4 on the side close to the human body and a first space on the side away from the human body, and both the first ventilation section 4 and the first space communicate with the ventilation system. The ventilation system includes a fan structure and a ventilation structure.

[0022] The fan structure is installed inside the automobile seat 15 and includes a first fan 1 and a second fan 2, the first fan 1 and the second fan 2 being stacked and fixed together and communicating with each other through an air passage, the first fan 1 being configured to blow air to the first ventilation section 4, and the second fan 2 being configured to suck air from the first ventilation section 4 into the inside of the first space.

[0023] The ventilation structure is installed inside the automobile seat 15, and has one end communicating with the first ventilation part 4 and the other end communicating with the first fan 1 and the second fan 2.

[0024] The ventilation system has a first state and a second state. When the ventilation system is in the first state, the first fan 1 is off and the second fan 2 is on, and airflow is driven by the second fan 2 and flows from the first vent 4 to the first space via the first fan 1 and the second fan 2. When the ventilation system is in the second state, the first fan 1 is on and the second fan 2 is off, and airflow is driven by the first fan 1 and flows from the first space to the first vent 4 via the second fan 2 and the first fan 1.

[0025] In some embodiments, the first fan 1 and the second fan 2 are aligned along a first direction, stacked and fixedly connected, and have air passages that communicate with each other, as shown in Figure 5. In this embodiment, the first direction is the horizontal direction.

[0026] In this embodiment, the first fan 1 and the second fan 2 share one circuit board, and both sides of the circuit board are connected to the stator coil of the first fan 1 and the stator coil of the second fan 2, respectively. By controlling two fans with one circuit board, the present application reduces the complexity of wiring, lowers the system failure rate, and makes maintenance and upgrades easier.

[0027] Specifically, in some embodiments, the first ventilation part 4 is a breathable cover, and in some cases, a lining may be provided inside the breathable cover, or the breathable cover may have a lining and ventilation holes in the lining. The lining is a relatively thin sponge layer sewn to the cover, which improves the comfort of the seat and provides ventilation. If the lining also has ventilation holes, the airflow will be smoother and the air will be more easily diffused.

[0028] Specifically, in some embodiments, the first ventilation part 4 is a breathable cover filled with a soft sponge, and in some cases, the breathable cover may be filled with a soft sponge with ventilation holes provided in the soft sponge. The soft sponge may be a relatively soft sponge that is installed in the occupant support layer 6, and can improve the comfort of the seating surface. In this embodiment, the first ventilation part 4 is a breathable cover filled with a soft sponge with ventilation holes provided in the soft sponge.

[0029] Specifically, in some embodiments, the first ventilation part 4 is a breathable cover, and both a soft sponge and a lining are filled in the breathable cover.

[0030] Working principle: When the ventilation system is in use, the ventilation system can be freely switched between the intake and output states by controlling the on / off of the first fan 1 and the second fan 2. Compared to the prior art, this application has an optimized design that installs two independent fans for intake and output, respectively, which can achieve optimal results in both modes, thereby ensuring ventilation efficiency and improving ventilation effect.

[0031] In some embodiments, an occupant support layer 6 is installed inside the automobile seat 15. The ventilation structure includes a first communication part 3, which is provided in the occupant support layer 6 and located on the side of the occupant support layer 6 away from the human body, and one side of the first communication part 3 communicates with the first fan 1 and the second fan 2 and the other side communicates with the first ventilation part 4.

[0032] Specifically, as shown in FIG. 1 , an occupant support layer 6 is installed inside an automobile seat 15. In this embodiment, the occupant support layer 6 is foam. The ventilation structure includes a first communication part 3, which is provided in the occupant support layer 6 and located on the side of the occupant support layer 6 away from the human body. The first communication part 3 has an air guide passage therein, and the first communication part 3 connects the space around the passenger with the first fan 1 or the second fan 2 for ventilation. Specifically, a sealing layer 11 is provided on the side of the occupant support layer 6 away from the human body. The sealing layer 11 ensures the airtightness of the first communication part 3 and prevents airflow from leaking from the connection point between the first connection part and the first fan 1, thereby ensuring a better ventilation effect. In this embodiment, the first fan 1 is located within the first communication section 3, and in this case, the sealing layer 11 is located between the first fan 1 and the second fan 2 to ensure airtightness between the first fan 1 and the second fan 2, and the part of the sealing layer 11 located between the first fan 1 and the second fan 2 has a first through hole for connecting the air passages of the first fan 1 and the second fan 2.

[0033] Specifically, when the ventilation system is in the air intake state (i.e., the first state) as shown in Fig. 2, the air flow direction is as shown in Fig. 4, with the first fan 1 off and the second fan 2 on, and the second fan 2 communicates with the first ventilation part 4 through the communication passage. At this time, the air outside the automobile seat 15 is driven by the second fan 2 and flows into the first space via the first ventilation part 4, the first communication part 3, the first fan 1, and the second fan 2 in this order, thereby achieving the air intake effect.

[0034] Specifically, when the ventilation system is in the blowing state (i.e., the second state) as shown in Fig. 3, the air flows in the direction shown in Fig. 4, with the first fan 1 turned on and the second fan 2 turned off, and the first fan 1 communicates with the first ventilation section 4 through the communication passage. At this time, the air in the first space is driven by the first fan 1 and flows in order through the second fan 2, the first fan 1, the first communication section 3, and the first ventilation section 4 into the space around the passenger, thereby achieving the blowing effect.

[0035] Specifically, the first communication portion 3 is a ventilating bag or a foam groove.

[0036] In some embodiments, the first communication part 3 is a ventilation bag, which is made of PU or TPU material and has excellent abrasion resistance and corrosion resistance, allowing the ventilation bag to be used for a long time even in harsh environments, is not easily damaged, and has high strength and toughness, allowing it to withstand relatively large pressures and impacts, effectively protecting the normal operation of the seat ventilation system. A three-dimensional mesh knit fabric structure is installed inside the ventilation bag, which has a unique three-dimensional structure and provides good elasticity and breathability, allowing the ventilation bag to maintain its shape and ventilation performance even when subjected to pressure, preventing airflow blockage even when subjected to pressure, and ensuring effective ventilation. Furthermore, the three-dimensional mesh knit fabric structure has good breathability and moisture absorption, allowing it to effectively expel moisture from the seat and allow ventilation, providing a better riding experience.

[0037] In some embodiments, the first communication section 3 is a foam groove, i.e., a groove provided in the foam, and a communication passage is formed inside the foam groove, which connects the first fan 1 or the second fan 2 to the first ventilation section 4.

[0038] In some embodiments, the ventilation structure further includes a second communication portion 5, which penetrates the occupant support layer 6 and has one side communicating with the first ventilation portion 4 and the other side communicating with the first communication portion 3. When the ventilation system is in the first state, airflow is driven by the second fan 2 and flows from the first ventilation portion 4 to the first space via the second communication portion 5, the first communication portion 3, the first fan 1, and the second fan 2 in this order. When the ventilation system is in the second state, airflow is driven by the first fan 1 and flows from the first space via the second fan 2, the first fan 1, the first communication portion 3, and the second communication portion 5 in this order to the first ventilation portion 4.

[0039] Specifically, as shown in Figures 1, 2, 3, 6, 8 and 9, the first communication part 3 is provided on the side of the occupant support layer 6 that is away from the human body, and the ventilation structure further includes a second communication part 5 that penetrates the occupant support layer 6 to communicate between the first communication part 3 and the first ventilation part 4. A plurality of second communication parts 5 are provided, and each of the second communication parts 5 communicates with the first ventilation part 4 on one side and is connected to the first communication part 3 on the other side.

[0040] Specifically, when the ventilation system is in the air-blowing state (i.e., the second state), the air flows in the direction shown in Fig. 3, with the first fan 1 turned on and the second fan 2 turned off, and the first fan 1 communicates with the first ventilation section 4 through the communication passage. At this time, the air in the first space is driven by the first fan 1 and flows in order from the second fan 2, the first fan 1, the first communication section 3, the second communication section 5, and the first ventilation section 4 into the space around the passenger, thereby achieving the air-blowing effect.

[0041] Specifically, when the ventilation system is in the air intake state (i.e., the first state), the air flows in the direction shown in Fig. 2, with the first fan 1 off and the second fan 2 on, and the communication passage connects the second fan 2 to the first ventilation part 4. At this time, the air outside the automobile seat 15 is driven by the second fan 2 and flows into the first space via the first ventilation part 4, the second communication part 5, the first communication part 3, the first fan 1, and the second fan 2 in this order, thereby achieving the air intake effect.

[0042] In some embodiments, the first fan 1 is installed in the first communication portion 3 and fixedly connected to the occupant support layer 6, and the first fan 1 and the second fan 2 are connected by a connection structure 17, which is intended to ensure airtightness and stability of the connection between the first fan 1 and the second fan 2.

[0043] In some embodiments, the connection structure 17 is a fixed connection structure, such as a screw, and the first fan 1 and the second fan 2 are connected by the screw to ensure the stability of the connection between the first fan 1 and the second fan 2.

[0044] Specifically, the housing of the first fan 1 and the housing of the second fan 2 are different in size. If the housing of the first fan 1 is relatively large, the area for gas flow between the first fan 1 and the first communication part 3 will also be correspondingly large, resulting in a better ventilation effect. The impeller sizes of the first fan 1 and the second fan 2 are also different, and the ventilation system can determine whether to provide strong airflow or strong air suction as needed. Since the cooling effect of air suction is better, the ventilation system is generally set to provide stronger air suction. In this case, the impeller of the first fan 1 is larger than the impeller of the second fan 2.

[0045] In some embodiments, the connecting structure 17 is a first blind rivet 7, which is installed by penetrating the first fan 1 and the second fan 2, and the first blind rivet 7 is for fixedly connecting the first fan 1 and the second fan 2.

[0046] 6 and 7 , in some embodiments, the connection structure 17 is an engaging connection structure, for example a first blind rivet 7, and two first blind rivets 7 are installed, thereby improving the stability of the connection between the first fan 1 and the second fan 2. The first blind rivets 7 are installed to extend along a first direction, and each of the first blind rivets 7 has a first engaging portion 71 and a second engaging portion 72 along the first direction. The first blind rivets 7 are installed to penetrate the first fan 1 and the second fan 2, and the first engaging portion 71 and the second engaging portion 72 engage with the first fan 1 and the second fan 2, respectively, thereby fixedly connecting the first fan 1 and the second fan 2. In this embodiment, the first blind rivet 7 is made of soft rubber, which has a certain degree of elasticity and vibration-damping effect, and can effectively reduce the vibration and noise generated when the first fan 1 and the second fan 2 are operating. This also reduces wear caused by vibration of the first fan 1 and the second fan 2, and extends the service life of the first fan 1 and the second fan 2.

[0047] In this embodiment, a back spring 10 is installed on the side of the second fan 2 away from the first fan 1, and the second fan 2 and the back spring 10 are fixedly connected to each other, thereby improving the stability when the first fan 1 and the second fan 2 are installed inside the automobile seat 15.

[0048] In some embodiments, an elastic sealing member is installed between the first fan 1 and the second fan 2, and the elastic sealing member is intended to ensure airtightness between the first fan 1 and the second fan 2 and ensure smooth airflow.

[0049] In some embodiments, a back spring 10 is installed in the first space, and a second fan 2 is installed on the side of the back spring 10 that is spaced apart from the first fan 1. The connection structure 17 is a connecting pipe 8 and a second blind rivet 9, one end of the second blind rivet 9 being connected to the first fan 1 via the connecting pipe 8, and the other end penetrating the back spring 10 and connecting to the second fan 2.

[0050] Specifically, as shown in Figures 8 and 9, two connection structures 17 are installed to connect the first fan 1 and the second fan 2, thereby improving the stability of the connection between the first fan 1 and the second fan 2. The connection structures 17 are a connection pipe 8 and a second blind rivet 9. The connection pipe 8 has a wave-shaped structure and is connected to the first fan 1. The second blind rivet 9 is installed to extend along the first direction and is provided with a third engagement portion. One end of the second blind rivet 9 is connected to the connection pipe 8 and the other end passes through the back spring 10 to connect to the second fan 2, with the third engagement portion engaging with the second fan 2, thereby fixedly connecting the first fan 1 and the second fan 2. In this embodiment, the connecting pipe 8 is a soft pipe that connects the air passages of the first fan 1 and the second fan 2. It ensures communication between the air passages of the first fan 1 and the second fan 2 and provides ample space between the first fan 1 and the second fan 2, preventing noise caused by the first fan 1 and the second fan 2 colliding when the seat cushion of the car is compressed. The second blind rivet 9 is made of soft rubber and effectively reduces vibration and noise generated when the first fan 1 and the second fan 2 are operating. It also reduces wear caused by vibration of the first fan 1 and the second fan 2 and extends the service life of the first fan 1 and the second fan 2.

[0051] In some embodiments, the connecting tube 8 and the second blind rivet 9 are of one-piece construction.

[0052] In this embodiment, the second fan 2 and the back spring 10 are fixedly connected, which can improve the stability when the first fan 1 and the second fan 2 are installed inside the car seat 15.

[0053] In some embodiments, the fan structure comprises a housing 16, with the first fan 1 and the second fan 2 connected by the housing 16.

[0054] Specifically, as shown in Figures 12, 14, 16 and 18, the fan structure has a housing 16, and the first fan 1 and the second fan 2 are connected by the housing 16, thereby realizing airtightness and stability of the connection between the first fan 1 and the second fan 2.

[0055] In some embodiments, the housing 16 is a one-piece structure, which connects the first fan 1 and the second fan 2 and can improve the stability of the connection between the first fan 1 and the second fan 2 .

[0056] In some embodiments, the first fan 1 is an axial fan 12 or a second centrifugal fan 14, and the second fan 2 is an axial fan 12 or a second centrifugal fan 14.

[0057] Specifically, as shown in FIGS. 11 to 18, the first fan 1 is an axial fan 12 or a centrifugal fan, and the second fan 2 is an axial fan 12 or a centrifugal fan. The centrifugal fan includes two types of structures, a first centrifugal fan 13 and a second centrifugal fan 14, as shown in FIG. 10. During use, a combination of any one type of first fan 1 and any one type of second fan 2 is selected according to the use environment and the characteristics of the fans. (As shown in FIG. 10, in this embodiment, there are nine combinations of the first fan 1 and the second fan 2: 1. The first fan 1 is an axial fan 12, and the second fan 2 is an axial fan 12; 2. The first fan 1 is an axial fan 12, and the second fan 2 is a first centrifugal fan 13; 3. The first fan 1 is an axial fan 12, and the second fan 2 is a second centrifugal fan 14; 4. The first fan 1 is the first centrifugal fan 13 and the second fan 2 is the axial fan 12, 5. The first fan 1 is the first centrifugal fan 13 and the second fan 2 is the first centrifugal fan 13, 6. The first fan 1 is the first centrifugal fan 13 and the second fan 2 is the second centrifugal fan 14, 7. The first fan 1 is the second centrifugal fan 14 and the second fan 2 is the axial fan 12, 8. The first fan 1 is the second centrifugal fan 14 and the second fan 2 is the first centrifugal fan 13, 9. The first fan 1 is the second centrifugal fan 14 and the second fan 2 is the second centrifugal fan 14).

[0058] Specifically, the axial fan 12 is suitable for applications requiring relatively high airflow and relatively low air pressure, where airflow is required but high pressure is not. The first centrifugal fan 13 provides a good balance between airflow and air pressure, and has a higher pressure coefficient and a relatively higher flow coefficient than the axial fan. The second centrifugal fan 14 provides high air pressure and a relatively low airflow, and is suitable for applications requiring high-pressure airflow cooling for a specific area.

[0059] The above merely describes the preferred embodiments and technical principles used in the present application. As those skilled in the art will appreciate, the scope of the present invention is not limited to the specific combination of the above technical features, but also includes other solutions that combine any of the above technical features or equivalent features without departing from the spirit of the present invention. For example, the above features may be substituted with (but not limited to) technical features having similar functions disclosed in the present application. [Explanation of symbols]

[0060] 1. First Fan 2. Second Fan 3 1st communication part 4 First ventilation section 5 2nd communication part 6. Passenger support layer 7. First blind rivet 71 First engagement portion 72 second engagement portion 8 Connecting pipe 9 Second blind rivet 10 Back Spring 11 Sealing layer 12 Axial fan 13 First centrifugal fan 14 Second centrifugal fan 15 Car seats 16 Housing 17 Connection structure

Claims

1. A ventilation system for an automobile seat, comprising: The automobile seat (15) has a first ventilation part (4) on a side close to the human body and a first space on a side away from the human body, and both the first ventilation part (4) and the first space are in communication with the ventilation system; The ventilation system of the automobile seat includes a fan structure and a vent structure; The fan structure is installed inside the automobile seat (15) and includes a first fan (1) and a second fan (2), the first fan (1) and the second fan (2) are stacked and fixed and have air passages communicating with each other, the first fan (1) is configured to send air to the first ventilation section (4), and the second fan (2) is configured to draw air from the first ventilation section (4) into the first space, The ventilation structure is installed inside the automobile seat (15), one end of which communicates with the first ventilation part (4) and the other end of which communicates with the first fan (1) and the second fan (2); The ventilation system has a first state and a second state, and when the ventilation system is in the first state, the first fan (1) is off and the second fan (2) is on, and airflow is driven by the second fan (2) and flows from the first ventilation section (4) to the first space via the first fan (1) and the second fan (2), and when the ventilation system is in the second state, the first fan (1) is on and the second fan (2) is off, and airflow is driven by the first fan (1) and flows from the first space to the first ventilation section (4) via the second fan (2) and the first fan (1). A ventilation system for an automobile seat.

2. An occupant support layer (6) is installed inside the automobile seat (15), and the ventilation structure includes a first communication part (3), which is provided in the occupant support layer (6) and is located on a side of the occupant support layer (6) that is away from the human body, and one side of the first communication part (3) communicates with the first fan (1) and the second fan (2), and the other side communicates with the first ventilation part (4).

2. The ventilation system for an automobile seat according to claim 1.

3. The ventilation structure further includes a second communication part (5), the second communication part (5) penetrates the occupant support layer (6), one side of the second communication part (5) communicates with the first ventilation part (4) and the other side of the second communication part (5) communicates with the first communication part (3), when the ventilation system is in the first state, the airflow is driven by the second fan (2) and flows from the first ventilation part (4) to the first space via the second communication part (5), the first communication part (3), the first fan (1) and the second fan (2) in this order, and when the ventilation system is in the second state, the airflow is driven by the first fan (1) and flows from the first space via the second fan (2), the first fan (1), the first communication part (3) and the second communication part (5) in this order to the first ventilation part (4).

3. The ventilation system for an automobile seat according to claim 2.

4. The first fan (1) is installed in the first communication portion (3) and is fixedly connected to the occupant support layer (6). The first fan (1) and the second fan (2) are connected by a connection structure (17), and the connection structure (17) is for realizing airtightness and stability of the connection between the first fan (1) and the second fan (2).

4. The ventilation system for an automobile seat according to claim 3.

5. The connecting structure (17) is a first blind rivet (7), which is installed by penetrating the first fan (1) and the second fan (2), and the first blind rivet (7) is for fixedly connecting the first fan (1) and the second fan (2).

5. The ventilation system for an automobile seat according to claim 4.

6. An elastic sealing member is installed between the first fan (1) and the second fan (2), and the elastic sealing member is for ensuring airtightness between the first fan (1) and the second fan (2).

6. A ventilation system for an automobile seat according to claim 5.

7. A back spring (10) is installed in the first space, and the second fan (2) is installed on the side of the back spring (10) that is spaced apart from the first fan (1), and the connection structure (17) is a connecting pipe (8) and a second blind rivet (9), one end of the second blind rivet (9) is connected to the first fan (1) via the connecting pipe (8) and the other end penetrates the back spring (10) and is connected to the second fan (2).

5. The ventilation system for an automobile seat according to claim 4.

8. The second fan (2) and the back spring (10) are fixedly connected.

8. A ventilation system for an automobile seat according to claim 5 or 7.

9. The fan structure has a housing (16), and the first fan (1) and the second fan (2) are connected by the housing (16).

4. The ventilation system for an automobile seat according to claim 3.

10. The first fan (1) is an axial fan (12) or a centrifugal fan, and the second fan (2) is the axial fan (12) or the centrifugal fan.

2. The ventilation system for an automobile seat according to claim 1.

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