Fan for seat ventilation, seat ventilation system, and automobile seat

Abstract

A fan for seat ventilation, a seat ventilation system, and an automobile seat. The fan comprises a fan mechanism, a first connector (3) and at least one driving mechanism, wherein the fan mechanism is provided with an air inlet (1) and an air outlet (2); the first connector is provided with a first connection port (31) and a second connection port (32) in communication with the first connection port, the second connection port being configured to be in communication with a ventilation mechanism of a seat; the first connector is provided with an air intake station and an air output station; when the first connector is located at the air intake station, the first connection port is in communication with the air inlet, such that an airflow in the ventilation mechanism flows from the air inlet to the fan mechanism and is discharged from the air outlet; and when the first connector is located at the air output station, the first connection port is in communication with the air outlet, such that the airflow in the fan mechanism flows to the ventilation mechanism. By means of the structure, the comfort of occupants can be improved; in addition, the structure has a low space occupation rate and is easy to control.

Description

Fan for seat ventilation, seat ventilation system and car seat

[0001] Cross-references to related publications

[0002] This disclosure claims priority to Chinese patent disclosure with application number 2023111035978, filed with the Chinese Patent Office on August 30, 2023, and entitled “A fan for seat ventilation”, and Chinese patent disclosure with application number 2023111033629, filed with the Chinese Patent Office on August 30, 2023, and entitled “A seat ventilation system and a car seat”, the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure generally relates to the technical field of seat ventilation, and in particular to a fan for seat ventilation, a seat ventilation system, and a car seat. Background Art

[0004] With technological advancements in the automotive industry, people's demands for ride comfort are increasing. Close contact between the human body and the seat can hinder air circulation, hindering sweat excretion and causing discomfort. Ventilation effectively improves air flow between the human body and the seat, keeping the body dry and comfortable.

[0005] In existing technology, seats are typically integrated with ventilation systems, using a mechanism to blow air toward or draw air from the seat surface to achieve cooling and air circulation. However, blowing air can easily direct damp, cold air toward the body, causing back discomfort after prolonged use. Drawing air, on the other hand, offers lower cooling efficiency and takes longer to achieve cooling effects. Furthermore, using a single fan on a single seat cannot achieve both blowing and drawing air simultaneously.

[0006] Summary of the Invention

[0007] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a fan for seat ventilation, a seat ventilation system and a car seat that can solve the above-mentioned technical problems.

[0008] In the first aspect, the present disclosure provides a fan for seat ventilation, comprising a fan mechanism, a first connecting member and at least one driving mechanism; the fan mechanism has an air inlet configured to absorb air volume and an air outlet configured to discharge air volume; the first connecting member has a first connecting port and a second connecting port connected to the first connecting port; the second connecting port is configured to be connected to the ventilation mechanism of the seat; the first connecting member has an air inlet position and an air outlet position; when the first connecting member is in the air inlet position, the first connecting port is connected to the air inlet, so that the airflow in the ventilation mechanism flows from the air inlet to the fan mechanism and is discharged from the air outlet; when the first connecting member is in the air outlet position, the first connecting port is connected to the air outlet, so that the airflow in the fan mechanism flows to the ventilation mechanism; the driving mechanism is connected to the first connecting member, and is configured to drive the first connecting member to switch to the air inlet position or the air outlet position.

[0009] Optionally, the fan mechanism includes: a shell and fan blades; the air inlet and air outlet are arranged on the shell; the fan blades are installed in the shell; the fan blades have an air inlet portion and an air outlet portion, an air inlet channel is formed between the air inlet portion and the air inlet, and an air outlet channel is formed between the air outlet portion and the air outlet; when the first connecting member is in the air inlet position, the first connecting port moves to a position opposite to the air inlet; when the first connecting member is in the air outlet position, the first connecting port moves to a position opposite to the air outlet.

[0010] Optionally, the shell includes a lower shell, an intermediate shell and an upper shell arranged in sequence; the fan blades are installed on the lower shell, and the air outlet channel is formed between the lower shell, the air outlet portion of the fan blades and the bottom of the intermediate shell; a channel connected to the air inlet portion of the fan blades is opened on the intermediate shell; the air inlet channel is formed between the upper shell and the intermediate shell.

[0011] Optionally, the air inlet and the air outlet are arranged in a straight line, and the driving mechanism includes a second driving device arranged on the fan mechanism, and the second driving device drives the first connecting member to slide in a straight line to adjust the first connecting member to be connected with the air inlet or the air outlet.

[0012] Optionally, a mounting groove is provided on the fan mechanism along the arrangement direction of the air inlet and the air outlet; and the second driving device is provided in the mounting groove.

[0013] Optionally, the edges of the air inlet and the air outlet are arranged along an arc shape, and the driving structure includes a first driving device arranged on the fan mechanism, which drives the first connecting member to rotate along the arc shape to adjust the first connecting member to be connected with the air inlet or the air outlet.

[0014] Optionally, a rack structure is provided on the first connecting member, and the first driving device is connected to the rack structure through a worm gear and a worm transmission.

[0015] Optionally, a slide groove is provided on the fan mechanism, and the first connecting member is slidably arranged in the slide groove.

[0016] Optionally, the driving mechanism is mounted on the housing via a fastener or a clip.

[0017] Optionally, the driving mechanism includes at least one of a motor, a cylinder, an airbag and a memory alloy.

[0018] In the second aspect, the present disclosure provides a seat ventilation system, comprising: a fan for seat ventilation as described in any one of the above items, a second connecting member and a seat ventilation structure; the second connecting member is a bendable structure, and the first end of the second connecting member is connected to the second connecting port; the seat ventilation structure is connected to the second end of the second connecting member and is configured for seat ventilation.

[0019] Optionally, the second connecting member is a flexible space bag; or the second connecting member is a tubular structure, and the material of the second connecting member is a flexible material.

[0020] Optionally, a mounting hole is provided on the seat ventilation structure, and the mounting hole is configured to communicate with the second end of the second connecting member.

[0021] Optionally, the seat ventilation structure includes a ventilation unit, which includes at least one of an air bag, a three-dimensional knitted mesh and an air guide groove. The ventilation unit has a ventilation cavity, and the mounting hole is connected to the ventilation cavity.

[0022] Optionally, the ventilation unit is arranged on the side of the seat foam close to the human body, the seat foam is arranged on the seat body, and a through hole is opened on the seat foam. The opening of the through hole close to the human body is connected to the mounting hole, and the opening of the through hole away from the human body is connected to the second end of the second connecting member.

[0023] Optionally, the ventilation unit is arranged on the side of the seat foam away from the human body, the seat foam is arranged on the seat body, and the seat foam is provided with through holes; the ventilation unit is provided with a plurality of ventilation holes, and the ventilation holes are connected with the ventilation cavity; the mounting hole is arranged on the side of the ventilation unit close to the seat frame, and the ventilation hole is arranged on the side of the ventilation unit close to the seat foam; the ventilation holes are arranged corresponding to the through holes, and are connected with the opening of the through holes on the side away from the human body.

[0024] Optionally, a control module is further included, and the control module is configured to: control the driving mechanism to drive the first connecting member to switch to the air inlet position or the air outlet position.

[0025] Optionally, the control module is specifically configured to: in response to a manual control signal, control the driving mechanism to drive the first connecting member to switch to the air inlet position or the air outlet position.

[0026] Optionally, a sensor module is further included, which is configured to detect the temperature and humidity inside the vehicle; the control module is specifically configured to: receive the temperature and humidity data detected by the sensor module in response to an automatic control signal; when it is judged that the temperature is greater than or equal to a first threshold and / or the humidity is greater than or equal to a second threshold, control the drive mechanism to drive the first connecting member to switch to the air inlet position; when it is judged that the temperature is less than the first threshold and / or the humidity is less than the second threshold, control the drive mechanism to drive the first connecting member to switch to the air outlet position.

[0027] In a third aspect, the present disclosure further proposes a car seat, comprising the seat ventilation system, seat cushion and backrest described in any one of the above items, wherein the seat ventilation system is arranged on the seat cushion and / or the backrest.

[0028] The beneficial effects of the present disclosure are as follows: Based on the technical solution provided by the present disclosure, by controlling the driving mechanism to drive the first connecting member to switch to the air inlet position, the first connecting port is connected to the air inlet; the fan mechanism is turned on, and the system is in the suction mode, that is, the moist and cold air on the side of the seat close to the user's body is discharged to the side of the seat away from the user's body through the seat's ventilation mechanism, air inlet, and air outlet; then, by controlling the driving mechanism to drive the first connecting member to switch to the air outlet position, the first connecting port is connected to the air outlet, and the system is switched to the blowing mode, that is, the air on the side of the seat away from the user's body is introduced to the seat surface through the air inlet, air outlet, and ventilation mechanism, thereby improving the air circulation between the seat surface and the user. This helps to avoid discomfort to the human body (especially to the waist and back) and improve the comfort of the occupant. In addition, during the above process, the system can also be controlled to continuously switch between the suction mode and the blowing mode (control the first connecting member to continuously switch between the air inlet position and the air outlet position), further preventing the moist and cold air from entering the human body for a long time. At the same time, in a fan for seat ventilation provided by the present invention, the air path relationship between the input and output of the fan mechanism and the seat ventilation mechanism is switched through the mutual cooperation of the fan mechanism, and only one fan mechanism is required to realize the suction and blowing functions, with a simple structure, low space occupancy, and easy control. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Other features, objects and advantages of the present disclosure will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

[0030] FIG1 is a schematic structural diagram of a fan for seat ventilation provided by the present disclosure;

[0031] FIG2 is a schematic structural diagram of the first connecting member and the air inlet shown in FIG1 being connected;

[0032] FIG3 is a schematic structural diagram of the first connecting member and the air outlet shown in FIG1 being connected;

[0033] FIG4 is an exploded view of the fan for seat ventilation shown in FIG1 ;

[0034] FIG5 is a partial enlarged view of portion D shown in FIG4 ;

[0035] FIG6 is a schematic structural diagram of the intermediate housing shown in FIG4 ;

[0036] FIG7 is a schematic structural diagram of the installation slot shown in FIG3 being arranged in the middle position;

[0037] FIG8 is a schematic diagram of the structure in which the first connecting member shown in FIG7 is switched to communicate with the air inlet;

[0038] FIG9 is an exploded view of the fan for seat ventilation shown in FIG7 ;

[0039] FIG10 is a schematic structural diagram of a fan for seat ventilation using a rotary blowing and suction structure;

[0040] FIG11 is a schematic structural diagram of the first connecting member shown in FIG10 being switched to communicate with the air inlet;

[0041] FIG12 is an exploded view of the fan for seat ventilation shown in FIG10 ;

[0042] FIG13 is a schematic structural diagram of the rack structure shown in FIG12;

[0043] FIG14 is a schematic structural diagram of the fan for seat ventilation shown in FIG1 equipped with an air bag;

[0044] FIG15 is a schematic structural diagram of a seat ventilation system provided by the present disclosure;

[0045] FIG16 is a side structural schematic diagram of the seat ventilation system shown in FIG15;

[0046] FIG17 is a schematic structural diagram of the second connecting member shown in FIG15;

[0047] FIG18 is a schematic structural diagram of the second connecting member shown in FIG1 being configured as a bellows;

[0048] FIG19 is a schematic structural diagram of the fan for seat ventilation shown in FIG1 being mounted on the seat body;

[0049] FIG20 is a partial enlarged view of portion C shown in FIG19;

[0050] FIG21 is a schematic structural diagram of the first connecting member shown in FIG19 when it is switched to the air outlet position;

[0051] FIG22 is a partial enlarged view of portion B shown in FIG21;

[0052] FIG23 is a schematic diagram of the structure of the second connecting member disposed in the air bag;

[0053] FIG24 is a schematic diagram of the structure of the ventilation unit provided with an air guide groove;

[0054] FIG25 is a schematic diagram showing the structure of a ventilation unit configured as a three-dimensional knitted mesh;

[0055] FIG26 is a schematic diagram showing the structure of the air bag arranged on the side of the seat foam close to the human body;

[0056] FIG27 is an enlarged view of the seat cushion portion shown in FIG26;

[0057] FIG28 is a schematic diagram of the state in which the suction station is switched to FIG27;

[0058] FIG29 is a schematic diagram showing a structure in which an air guide groove is provided on the side of the seat foam away from the human body;

[0059] FIG30 is an enlarged view of the seat cushion portion shown in FIG29;

[0060] FIG31 is a schematic diagram of the state of switching to the suction station shown in FIG30.

[0061] Reference numerals in the figure: 1, air inlet; 2, air outlet; 3, first connecting member; 31, first connecting port; 32, second connecting port; 33, rack structure; 34, worm gear; 35, worm; 4, second connecting member; 41, connecting unit; 42, first interface; 43, second interface; 44, adapter; 5, housing; 51, lower housing; 510, chute; 52, intermediate housing; 520, channel; 521, recess; 53, upper housing; 6, fan blade; 61, air inlet; 62, air outlet 610. Air inlet channel; 620. Air outlet channel; 71. First drive device; 72. Installation space; 73. Upper plate; 74. Second motor; 75. Screw rod; 76. Slider; 77. Drive housing; 78. Guide rod; 79. Matching structure; 8. Air bag; 81. Installation hole; 82. Ventilation hole; 801. Air guide groove; 802. Three-dimensional knitted mesh; 803. Sealing layer; 9. Installation slot; 91. Second drive device; 10. Seat body; 101. Through hole; 102. Soft layer. DETAILED DESCRIPTION

[0062] The present disclosure is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant disclosure and are not intended to limit the disclosure. It should also be noted that, for ease of description, only portions relevant to the disclosure are shown in the accompanying drawings.

[0063] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0064] Conventional seats often incorporate ventilation features, using a mechanism to blow air onto or draw air from the seat surface to achieve cooling and air circulation. However, blowing air can easily direct damp, cold air toward the body, causing back discomfort after prolonged use. Drawing air, on the other hand, offers lower cooling efficiency and takes longer to achieve cooling. Furthermore, using a single fan on a single seat prevents both blowing and drawing air simultaneously.

[0065] Based on this, the present disclosure proposes a fan, a seat ventilation system and a car seat for seat ventilation. First, it abandons the traditional ventilation method (i.e., a single blowing and sucking method), and instead combines the blowing and sucking modes. During use, the fan first sucks air to discharge the wet and cold air, and then blows air to avoid causing discomfort to the human body; secondly, the present disclosure also optimizes the structure of the fan, so that the fan has both suction and blowing functions, and has a simple and clever structure, low space occupancy, and is easy to control.

[0066] Please refer to Figures 1 to 13, which are schematic structural diagrams of a fan for seat ventilation provided by the present disclosure.

[0067] As shown in Figure 1, the present embodiment provides a fan for seat ventilation, comprising: a fan mechanism, a first connecting member 3 and at least one driving mechanism; the fan mechanism has an air inlet 1 configured to absorb air volume and an air outlet 2 configured to discharge air volume; the first connecting member 3 has a first connecting port 31 and a second connecting port 32 connected to the first connecting port 31; the second connecting port 32 is configured to be connected to the ventilation mechanism of the seat; the first connecting member 3 has an air inlet position and an air outlet position; when the first connecting member 3 is in the air inlet position, the first connecting port 31 is connected to the air inlet 1, so that the air flow in the ventilation mechanism flows from the air inlet 1 to the fan mechanism and is discharged from the air outlet 2; when the first connecting member 3 is in the air outlet position, the first connecting port 31 is connected to the air outlet 2, so that the air flow in the fan mechanism flows to the ventilation mechanism; the driving mechanism is connected to the first connecting member 3, and is configured to drive the first connecting member 3 to switch to the air inlet position or the air outlet position.

[0068] To facilitate understanding by those skilled in the art, the working principle of a fan configured for seat ventilation provided by the present disclosure is as follows: by controlling the driving mechanism to drive the first connecting member 3 to switch to the air inlet position, the first connecting port 31 is connected to the air inlet 1; the fan mechanism is turned on, and the system is in the suction mode (as shown in Figures 2, 8, and 11), that is, the moist and cold air on the side of the seat close to the human body is discharged to the side of the seat away from the human body through the ventilation mechanism, air inlet 1, and air outlet 2 of the seat; then, the driving mechanism is controlled to drive the first connecting member 3 to switch to the air outlet position, and the first connecting port 31 is connected to the air outlet 2. At this time, the system is switched to the blowing mode (as shown in Figures 3, 7, and 10), that is, the air on the side of the seat away from the human body is introduced into the seat surface through the air inlet 1, air outlet 2, and ventilation mechanism, thereby improving the air circulation between the seat surface and the human body. This is conducive to avoiding discomfort to the human body (especially to the waist and back) and improving the comfort of the occupants. In addition, during the above process, the system can also be controlled to continuously switch between the suction mode and the blowing mode (control the first connecting member to continuously switch between the air inlet position and the air outlet position), further preventing the wet and cold air from entering the human body for a long time.

[0069] In a fan for seat ventilation provided by the present disclosure, the air path relationship between the input and output of the fan mechanism and the seat ventilation mechanism is switched through the mutual cooperation of the fan mechanism, and only one fan mechanism is required to realize the suction and blowing functions, with a simple structure, low space occupancy, and easy control.

[0070] In this embodiment, the fan mechanism includes a housing 5 and fan blades 6 .

[0071] In which, the air inlet 1 and the air outlet 2 are arranged on the shell; the fan blade 6 is installed in the shell 5; the fan blade 6 has an air inlet portion 61 and an air outlet portion 62, an air inlet channel 610 is formed between the air inlet portion 61 and the air inlet 1, and an air outlet channel 620 is formed between the air outlet portion 62 and the air outlet 2; when the first connecting member 3 is in the air inlet position, the first connecting port 31 moves to a position opposite to the air inlet 1; when the first connecting member 3 is in the air outlet position, the first connecting port 31 moves to a position opposite to the air outlet 2.

[0072] In some embodiments, as shown in Figure 6, the fan blade 6 can be a ring structure; the inner ring of the fan blade serves as the air inlet 61, and the outer ring of the fan blade serves as the air outlet 62; the gas enters the fan blade 6 through the air inlet 61 and is then discharged through the air outlet 62.

[0073] In some embodiments, as shown in Figures 4, 9, and 12, the shell 5 includes a lower shell 51, an intermediate shell 52, and an upper shell 53 arranged in sequence; the fan blade 6 is installed on the lower shell 51, and the air outlet channel 620 is formed between the lower shell 51, the air outlet portion 62 of the fan blade 6, and the bottom of the intermediate shell 52; a channel 520 connected to the air inlet portion 61 of the fan blade 6 is opened on the intermediate shell 52; the air inlet channel 610 is formed between the upper shell 53 and the intermediate shell 52.

[0074] Specifically, the air inlet 1 can be arranged between the upper shell 53 and the middle shell 52 , and the air outlet 2 can be arranged between the middle shell 52 and the lower shell 51 . The cross-sectional area of ​​the air inlet 1 is larger than that of the air outlet 2 .

[0075] Optionally, the lower shell 51, the middle shell 52, and the upper shell 53 can be split structures, fixedly connected by a detachable structure (such as a snap, screw connection, etc.); of course, an integrated structure can also be adopted and formed as a whole.

[0076] Optionally, as shown in FIG6 , the intermediate shell 52 is provided with a 1-5 mm recessed portion 521 at the bottom of the air inlet 1 , which is configured to change the wind direction and balance the proportional relationship between the cross-sectional areas of the air inlet and the air outlet.

[0077] It is worth mentioning that the positions of the air inlet 1 and the air outlet 2 can also be set according to actual needs. For example, guide joints can be installed at the air outlet 1 and the air outlet 2 to adjust the position of the air outlet to adapt to the position switching method of the first connecting member 3, so as to facilitate the driving mechanism to drive the first connecting member 3 to switch the air path state.

[0078] It is worth mentioning that the air inlet 1 and the air outlet 2 can be arranged along a straight line. Of course, the edges of the air inlet 1 and the air outlet 2 can also be arranged along an arc. Depending on the location of the air inlet 1 and the air outlet 2, different drive mechanisms are provided accordingly. Please refer to the following embodiments for details.

[0079] In this embodiment, as shown in Figures 2-9, the air inlet 1 and the air outlet 2 are arranged in a straight line. The drive mechanism includes a second drive device 91 provided on the fan mechanism. The second drive device 91 drives the first connecting member 3 to slide along a straight line to adjust the first connecting member 3 to communicate with the air inlet 1 or the air outlet 2.

[0080] It can be understood that the second driving device 91 has a driving end, which is configured to drive the first connecting member 3 to move along the arrangement direction of the air inlet 1 and the air outlet 2; when the first connecting member 3 moves to the air inlet 1 position, the air inlet 1 is connected to the first connecting member 3, and when the first connecting member 3 moves to the air outlet 2 position, the air outlet 2 is connected to the first connecting member 3.

[0081] Optionally, the second driving device 91 may be a linear motor, a cylinder, an air bag or a memory alloy.

[0082] In this embodiment, as shown in Figure 5, the second drive device 91 includes a second motor 74, a screw rod 75, a slider 76, and a guide rod 78. The screw rod 75 is connected to the output end of the second motor 74; the slider 76 is threadedly connected to the screw rod 75; the second motor 74 is mounted on a drive housing 77, and a guide rod 78 is provided on the drive housing 77 in a direction parallel to the screw rod 75. The slider 76 is slidably mounted on the guide rod 78.

[0083] Optionally, the first connecting member 3 is provided with a matching structure 79 that matches the slider 16 .

[0084] In this embodiment, the shell 5, the first connecting member 3, and the second driving device 91 together form a sliding blowing and suction structure, which drives the first connecting member 3 to extend and slide and adjust its position relative to the air inlet 1 and the air outlet 2, thereby switching the first connecting member 3 to the air inlet position or the air outlet position.

[0085] In this embodiment, as shown in Figures 7-9, the fan mechanism is provided with a mounting slot 9 along the arrangement direction of the air inlet 1 and the air outlet 2; the second drive device 91 is disposed within the mounting slot 9. The mounting slot 9 extends through the middle of the air inlet 1 and the air outlet 2; the fixed end of the second drive device 91 is fixedly mounted within the mounting slot 9.

[0086] Of course, in other embodiments, the mounting slot 9 can also be installed at other locations of the fan mechanism according to actual needs. As shown in Figures 2 to 5, mounting slots 9 are provided on opposite sides of the air inlet 1 and the air outlet 2, and a second drive device 91 is provided in the mounting slots 9 accordingly.

[0087] In some optional embodiments, as shown in Figures 10-13 , the edges of the air inlet 1 and the air outlet 2 are arranged along an arc. The drive structure then includes a first drive device 71 disposed on the fan mechanism. The first drive device 71 drives the first connecting member 3 to rotate along the arc to adjust the first connecting member 3 to communicate with the air inlet 1 or the air outlet 2.

[0088] Specifically, the shell 5, the first connecting member 3, and the first driving device 71 together form a rotating blowing and suction structure. The first driving device 71 is installed on the shell 5. The output end of the first driving device 71 is connected to the first connecting member 3. By driving the first connecting member 3 to rotate, its position relative to the air inlet 1 and the air outlet 2 is adjusted, and then the first connecting member 3 is switched to the air inlet position or the air outlet position.

[0089] Optionally, as shown in Figures 10-13, the first drive device 71 is, for example, a first motor. A worm 35 is provided at the output end of the first motor, and the worm 35 is connected to the rack structure 33 via the worm 35. The fan mechanism is provided with a slot, on which an upper plate 73 is detachably mounted. A mounting space 72 for mounting the first motor is formed between the upper plate and the slot. An opening is provided on one side of the slot, through which the worm gear 34 and worm 35 are connected to the rack structure 33.

[0090] Optionally, a rack structure 33 is provided on the first connecting member 3 , and the first driving device 71 is connected to the rack structure 33 through a worm gear 34 and a worm 35 .

[0091] Optionally, as shown in FIG12 , a slide groove 510 is provided on the fan mechanism, and the first connecting member 3 is slidably disposed in the slide groove 510 .

[0092] Optionally, the driving mechanism is mounted on the housing 5 via a fastener or a clip.

[0093] Optionally, the driving mechanism includes at least one of a motor, a cylinder, an airbag and a memory alloy.

[0094] In some application scenarios, the active end of the driving mechanism is mounted on the housing 5 , and the driven end is connected to the first connector 3 ; in other application scenarios, the positions of the active end and the driven end of the driving mechanism can also be interchanged.

[0095] Based on the fan for seat ventilation proposed in the above embodiment, this embodiment further proposes a seat ventilation system.

[0096] As shown in Figures 15 and 16, the seat ventilation system proposed in this embodiment includes: the above-mentioned fan for seat ventilation, a second connecting member 4 and a seat ventilation structure; the second connecting member 4 is a bendable structure, and the first end of the second connecting member 4 is connected to the second connecting port 32; the seat ventilation structure is connected to the second end of the second connecting member 4 and is configured for seat ventilation.

[0097] It can be understood that when the first connecting member 3 is in the air inlet position, the first connecting port 31 is connected with the air inlet 1, so that the air flow in the seat ventilation structure flows from the air inlet 1 to the fan mechanism and is discharged from the air outlet 2; when the first connecting member 3 is in the air outlet position, the first connecting port 31 is connected with the air outlet 2, so that the air flow in the fan mechanism flows to the seat ventilation structure.

[0098] The working principle of the seat ventilation system provided in this embodiment is as follows:

[0099] Suction mode: As shown in Figures 11, 14 and 19, the first connecting member 3 is driven to switch to the air inlet position by controlling the driving mechanism. At this time, the first connecting port 31 is connected to the air inlet 1; the fan mechanism is turned on, and the system switches to the suction mode, that is, the air is introduced from the seat surface close to the human body (the seat surface in contact with the human body) along the seat ventilation structure, the second connecting member 4, and into the first connecting port 31, and then discharged to the seat surface away from the human body through the first connecting member 3, the air inlet 1, the fan mechanism, and the air outlet 2.

[0100] Blowing mode: As shown in Figures 10, 13 and 18, the first connecting member 3 is driven to switch to the air outlet position by controlling the driving mechanism. At this time, the first connecting port 31 is connected to the air outlet 2; the fan mechanism is turned on, and the system switches to the blowing mode, that is, the air on the seat surface away from the human body is introduced into the first connecting port 31 through the fan mechanism and the air outlet 2, and then blown into the seat surface close to the human body (the seat surface in contact with the human body) along the first connecting member 3, the second connecting member 4, and the seat ventilation structure in sequence.

[0101] The second connecting member 4 is configured as a bendable structure, thereby ensuring that the first connecting member 3 can achieve stable switching when switching the working position state.

[0102] It is not difficult to see from this that the use of a single fan in the above system realizes both blowing and suction modes, that is, through the mutual cooperation of the fan mechanism, the first connecting member 3, the second connecting member 4, the driving mechanism and the seat ventilation structure, the wind path relationship between the input and output of the fan mechanism and the seat ventilation structure is switched. Only one fan mechanism is required to realize the suction and blowing functions, which has a simple structure, low space occupancy and is easy to control.

[0103] More importantly, the seat ventilation system combines suction and blowing modes, enabling the removal of damp, cold air before blowing. This improves air circulation between the seat surface and the human body, reducing the impact of damp, cold air on the human body, preventing discomfort (particularly in the lower back) and enhancing occupant comfort. During this process, the system can also be controlled to continuously switch between suction and blowing modes (by switching the first connector 3 between the air inlet and air outlet positions), further preventing prolonged exposure of damp, cold air to the human body.

[0104] In some embodiments, the second connecting member 4 is a flexible space bag. To facilitate implementation and understanding by those skilled in the art, a specific embodiment is provided for description:

[0105] In a first optional embodiment, as shown in FIG. 17 and FIG. 18 , the flexible space bag body includes a plurality of connecting units 41 hinged in sequence and a flexible bag body covering the outside thereof.

[0106] As shown in Figure 17 , the first end of the connecting unit 41 is provided with a first interface 42 configured to connect to the second connection port 32, and the second end of the connecting unit 41 is provided with a second interface 43 configured to connect to the seat ventilation structure. An air path is defined through the middle of the connecting unit 41 (i.e., it provides a support space in the middle, minimizing wind resistance), and hinged structures are provided at both ends. These hinged structures are configured to articulate with adjacent connecting units. Multiple connecting units 41 are hinged end to end in sequence, forming a chain of air paths. This ensures that the second connecting member 4 maintains unobstructed air flow in both workstation states and during switching.

[0107] Optionally, the flexible bag body can be integrated with the seat ventilation structure (such as the air bag 8) or independently provided. For example, as shown in FIG23 , the second connecting member 4 is accommodated in the air bag 8.

[0108] In the second optional embodiment, the flexible space bag body includes a three-dimensional knitted mesh or breathable sponge with pressure-bearing and wind-guiding functions, or a plastic or rubber part with multiple gaps, and a flexible bag body covering the outside thereof; the three-dimensional knitted mesh, breathable sponge, plastic or rubber part mentioned above is softer than the connecting unit 41, and it is easier to switch workstations.

[0109] Optionally, the flexible bag body can be provided integrally with the seat ventilation structure (eg, the air bag 8) or independently.

[0110] In a third optional embodiment, the flexible space bag body includes a flexible bag body covered with the above-mentioned air-guiding and pressure-bearing material (such as a three-dimensional knitted mesh or a breathable sponge or a plastic or rubber part with multiple gaps) and a connecting unit 41; the flexible bag body can be integrated with the seat ventilation structure (such as an air bag 8) or independently set.

[0111] In a fourth optional embodiment, the flexible space bag body includes a combination of two or more structures of the first optional embodiment, the second optional embodiment and the third optional embodiment.

[0112] Of course, the above embodiments are only for further illustrating several implementation methods of the flexible space bag body, and are not intended to limit the same.

[0113] Furthermore, in some other embodiments, as shown in FIG18 , the second connecting member 4 may be a tubular structure, and the material of the second connecting member 4 may be a flexible material, such as a corrugated tube, a rubber tube, or the like.

[0114] Optionally, as shown in FIG. 18 , the second connecting member 43 is connected to the seat ventilation structure via an adapter 44 .

[0115] In some embodiments, as shown in FIG. 14 , FIG. 24 and FIG. 25 , a mounting hole 81 is provided on the seat ventilation structure, and the mounting hole 81 is configured to communicate with the second end of the second connecting member 4 .

[0116] Optionally, the seat ventilation structure includes a ventilation unit. The ventilation unit includes at least one of an air bag 8, a three-dimensional knitted mesh, and an air guide groove. The ventilation unit has a ventilation cavity, and is provided with a plurality of ventilation holes 82. The mounting hole 81 and the ventilation holes 82 communicate with the ventilation cavity. The ventilation unit has a first end surface, and the ventilation holes 82 are provided on the first end surface. Optionally, a plurality of ventilation holes 82 are arranged in an array on the first end surface.

[0117] Alternatively, as shown in Figures 14, 24 and 25, the structure of the air bag 8 may be a rectangular structure. As shown in Figures 15, 18 and 23, the structure of the air bag 8 may also be a rectangular structure with an avoidance opening structure, wherein the avoidance opening is configured to provide the second connecting member.

[0118] In some optional embodiments, the ventilation unit includes an air bag 8 , a ventilation cavity is provided inside the air bag 8 , and the mounting hole 81 and the ventilation hole 82 on the air bag 8 are in communication with the ventilation cavity.

[0119] Optionally, the position of the mounting hole 81 is set according to the actual requirements when the air bag 8 is connected to the second end of the second connector 4. As shown in FIG24 , the mounting hole 81 can be set on the side of the air bag 8; as shown in FIG25 , it can also be set at any position on the bottom surface of the air bag 8.

[0120] In some optional embodiments, as shown in Figure 25, the ventilation unit includes a three-dimensional knitted mesh 802 arranged on the seat foam 10, and a sealing layer 803 is provided on the outside of the three-dimensional knitted mesh 802, so that the space enclosed in the sealing layer 803 forms the ventilation cavity; the ventilation holes 82 and the mounting holes 81 are provided on the corresponding positions of the sealing layer 803 or the seat foam 10.

[0121] In some optional embodiments, as shown in Figure 24, the ventilation unit includes an air guide groove 801 arranged on the seat foam 10, the seat foam 10 is arranged on the seat body, and a sealing layer 803 is arranged on the outside of the air guide groove, thereby forming the ventilation cavity between the sealing layer 803 and the air guide groove 801; the ventilation hole 82 and the mounting hole 81 are arranged at the corresponding position of the sealing layer 803 or the seat foam 10.

[0122] Of course, in some optional embodiments, the ventilation unit may also include two or three of the air bag 8, the three-dimensional knitted mesh 802, and the air guide groove 801 at the same time.

[0123] In some embodiments, as shown in Figures 26 to 28, the ventilation unit is arranged on the side of the seat foam 10 close to the human body, and the seat foam 10 is arranged on the seat body. A through hole 101 is opened on the seat foam 10, and the opening of the through hole 101 close to the human body is connected to the mounting hole 81, and the opening of the through hole 101 away from the human body is connected to the second end of the second connecting member 4.

[0124] Optionally, a soft layer 102 is provided on the side of the ventilation unit away from the seat foam 10. The second end of the second connecting member 4 can be connected to the opening of the through hole 101 away from the human body; of course, the second connecting member 4 can also pass through the through hole 101 and connect to the mounting hole 81.

[0125] In some embodiments, as shown in Figures 29 to 31, the ventilation unit is arranged on the side of the seat foam 10 away from the human body, the seat foam 10 is arranged on the seat body, and the seat foam 10 is provided with a through hole 101; the ventilation unit is provided with a plurality of ventilation holes 82, and the ventilation holes 82 are connected with the ventilation cavity; the mounting hole 81 is arranged on the side of the ventilation unit close to the seat frame, and the ventilation hole 82 is arranged on the side of the ventilation unit close to the seat foam 10; the ventilation hole 82 is arranged corresponding to the through hole 101, and is connected with the opening of the through hole 101 on the side away from the human body.

[0126] Optionally, the number of the ventilation holes 82 is the same as that of the through holes 101 , and the positions are correspondingly arranged.

[0127] In some embodiments, the seat ventilation system further includes a control module, and the control module is configured to control the driving mechanism to drive the first connecting member 3 to switch to an air inlet position or an air outlet position.

[0128] In some embodiments, the control module is specifically configured to: in response to a manual control signal, control the driving mechanism to drive the first connecting member 3 to switch to the air inlet position or the air outlet position.

[0129] Optionally, the manual control signal includes, for example, a first signal; and the control module controls the driving mechanism to drive the first connecting member 3 to switch to the air inlet position in response to the first signal.

[0130] Optionally, the manual control signal includes, for example, a second signal; and the control module controls the driving mechanism to drive the first connecting member 3 to switch to the air outlet position in response to the second signal.

[0131] Optionally, the manual control signal includes, for example, a third signal; the control module responds to the third signal, controls the driving mechanism to drive the first connecting member 3 to switch to the air inlet position, and after a set time, controls the driving mechanism to drive the first connecting member 3 to switch to the air outlet position.

[0132] Optionally, the manual control signal includes, for example, a fourth signal; and the control module controls the driving mechanism to alternately adjust the first connecting member 3 in response to the fourth signal, so as to switch the first connecting member 3 between the air inlet position and the air outlet position.

[0133] In some embodiments, the seat ventilation system also includes a sensor module, which is configured to detect the temperature and humidity in the vehicle; the control module is specifically configured to: receive the temperature and humidity data detected by the sensor module in response to an automatic control signal; when it is judged that the temperature is greater than or equal to the first threshold and / or the humidity is greater than or equal to the second threshold, control the drive mechanism to drive the first connecting member 3 to switch to the air inlet position; when it is judged that the temperature is less than the first threshold and / or the humidity is less than the second threshold, control the drive mechanism to drive the first connecting member 3 to switch to the air outlet position.

[0134] As shown in Figures 19 to 22, which are schematic structural diagrams of a car seat provided by this embodiment, based on the fan for seat ventilation and the seat ventilation system proposed in the above embodiments, this embodiment further provides a car seat.

[0135] The automobile seat proposed in this embodiment includes a seat cushion and a backrest, and the seat ventilation system as described above, which is arranged on the seat cushion and / or the backrest.

[0136] In some embodiments, the seat body (seat cushion and backrest) includes a seat frame and a seat foam 10 arranged on the seat frame, the fan mechanism is fixedly mounted on the side of the seat frame away from the seat foam 10, the seat ventilation structure is arranged on the seat foam 10, and the first connecting member 3 and the second connecting member 4 connect the seat ventilation structure with the fan mechanism.

[0137] The above description is merely a preferred embodiment of the present disclosure and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to technical solutions formed by a specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the disclosed concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in the present disclosure. Industrial Applicability

[0138] The present invention switches the air path relationship between the input and output of the fan mechanism and the seat ventilation mechanism through the mutual cooperation of the fan mechanism, the first connecting member, and the driving mechanism. Only one fan mechanism is needed to realize the suction and blowing functions. It has a simple structure, low space occupancy, and is easy to control, while preventing wet and cold air from penetrating into the human body for a long time.

Claims

1. A fan for seat ventilation, characterized in that: include: A fan mechanism, the fan mechanism comprising an air inlet (1) configured to absorb air volume and an air outlet (2) configured to discharge air volume; A first connecting member (3), the first connecting member (3) having a first connecting port (31) and a second connecting port (32) connected to the first connecting port (31); the second connecting port (32) is configured to be connected to a ventilation mechanism of the seat; the first connecting member (3) has an air inlet position and an air outlet position; when the first connecting member (3) is in the air inlet position, the first connecting port (31) is connected to the air inlet (1), so that the airflow in the ventilation mechanism flows from the air inlet (1) to the fan mechanism and is discharged from the air outlet (2); when the first connecting member (3) is in the air outlet position, the first connecting port (31) is connected to the air outlet (2), so that the airflow in the fan mechanism flows to the ventilation mechanism; At least one driving mechanism, the driving mechanism is connected to the first connecting member (3) and is configured to drive the first connecting member (3) to switch to an air inlet position or an air outlet position.

2. The fan for seat ventilation according to claim 1, characterized in that: The fan mechanism comprises: A housing (5), wherein the air inlet (1) and the air outlet (2) are arranged on the housing (5); A fan blade (6), the fan blade (6) being installed in the housing (5); the fan blade (6) having an air inlet portion (61) and an air outlet portion (62); an air inlet channel (610) being formed between the air inlet portion (61) and the air inlet (1); and an air outlet channel (620) being formed between the air outlet portion (62) and the air outlet (2); When the first connecting member (3) is in the air inlet position, the first connecting port (31) moves to a position opposite to the air inlet (1); when the first connecting member (3) is in the air outlet position, the first connecting port (31) moves to a position opposite to the air outlet (2).

3. The fan for seat ventilation according to claim 2, characterized in that: The housing (5) comprises a lower housing (51), an intermediate housing (52) and an upper housing (53) which are arranged in sequence; The fan blade (6) is mounted on the lower shell (51), and the air outlet channel (620) is formed between the lower shell (51), the air outlet portion (62) of the fan blade (6), and the bottom of the intermediate shell (52); The intermediate shell (52) is provided with a hole (520) communicating with the air inlet portion (61) of the fan blade (6); the air inlet channel (610) is formed between the upper shell (53) and the intermediate shell (52).

4. The fan for seat ventilation according to any one of claims 1 to 3, characterized in that: The air inlet (1) and the air outlet (2) are arranged in a straight line, and the driving mechanism comprises a second driving device (91) arranged on the fan mechanism, and the second driving device (91) drives the first connecting member (3) to slide along a straight line to adjust the first connecting member (3) to be connected with the air inlet (1) or the air outlet (2).

5. The fan for seat ventilation according to claim 4, characterized in that: The fan mechanism is provided with a mounting groove (9) along the arrangement direction of the air inlet (1) and the air outlet (2); the second driving device (91) is arranged in the mounting groove (9).

6. The fan for seat ventilation according to any one of claims 1 to 3, characterized in that: The edges of the air inlet (1) and the air outlet (2) are arranged along an arc shape, and the driving structure comprises a first driving device (71) arranged on the fan mechanism, and the first driving device (71) drives the first connecting member (3) to rotate along the arc shape to adjust the first connecting member (3) to be connected with the air inlet (1) or the air outlet (2).

7. The fan for seat ventilation according to claim 6, characterized in that: The first connecting member (3) is provided with a rack structure (33), and the first driving device (71) is connected to the rack structure (33) through a worm wheel (34) and a worm (35).

8. The fan for seat ventilation according to any one of claims 1 to 7, characterized in that: The fan mechanism is provided with a slide groove (510), and the first connecting member (3) is slidably arranged in the slide groove (510).

9. The fan for seat ventilation according to claim 2, characterized in that: The driving mechanism is mounted on the housing (5) via a fastener or a clamping member.

10. The fan for seat ventilation according to any one of claims 1 to 9, characterized in that: The driving mechanism includes at least one of a motor, a cylinder, an air bag and a memory alloy.

11. A seat ventilation system, characterized in that: include: A fan for seat ventilation according to any one of claims 1 to 10; A second connecting member (4), the second connecting member (4) being a bendable structure, and a first end of the second connecting member (4) being in communication with the second connecting port (32); A seat ventilation structure, the seat ventilation structure is connected to the second end of the second connecting member (4) and is used for seat ventilation.

12. The seat ventilation system according to claim 11, characterized in that: The second connecting member (4) is a flexible space bag; Or the second connecting member (4) is a tubular structure, and the material of the second connecting member (4) is a flexible material.

13. The seat ventilation system according to claim 11 or 12, characterized in that: The seat ventilation structure is provided with a mounting hole (81), and the mounting hole (81) is arranged to be in communication with the second end of the second connecting member (4).

14. The seat ventilation system according to claim 13, characterized in that: The seat ventilation structure comprises a ventilation unit, which comprises at least one of an air bag (8), a three-dimensional knitted mesh (802) and an air guide groove (801), and the ventilation unit has a ventilation cavity, and the mounting hole (81) is connected to the ventilation cavity.

15. The seat ventilation system according to claim 14, characterized in that: The ventilation unit is arranged on the side of the seat foam (10) close to the human body. The seat foam (10) is arranged on the seat body. A through hole (101) is opened on the seat foam. The opening of the through hole (101) close to the human body is connected to the mounting hole (81), and the opening of the through hole (101) away from the human body is connected to the second end of the second connecting member (4).

16. The seat ventilation system according to claim 14, characterized in that: The ventilation unit is arranged on the side of the seat foam (10) away from the human body, the seat foam (10) is arranged on the seat body, and the seat foam (10) is provided with a through hole (101); the ventilation unit is provided with a plurality of ventilation holes (82), and the ventilation holes (82) are communicated with the ventilation cavity; the mounting hole (81) is arranged on the side of the ventilation unit close to the seat frame, and the ventilation hole (82) is arranged on the side of the ventilation unit close to the seat foam (10); the ventilation hole (82) is arranged corresponding to the through hole (101), and is communicated with the opening of the through hole (101) on the side away from the human body.

17. The seat ventilation system according to any one of claims 11 to 16, characterized in that: It also comprises a control module, which is configured to control the driving mechanism to drive the first connecting member (3) to switch to an air inlet position or an air outlet position.

18. The seat ventilation system according to any one of claims 11 to 17, characterized in that: The control module is specifically configured to: in response to a manual control signal, control the drive mechanism to drive the first connecting member (3) to switch to an air inlet position or an air outlet position.

19. The seat ventilation system according to any one of claims 11 to 18, characterized in that: Also included is a sensor module, the sensor module is configured to detect the temperature and humidity inside the vehicle; The control module is specifically configured at: In response to the automatic control signal, receiving the temperature and humidity data detected by the sensing module; When it is determined that the temperature is greater than or equal to a first threshold value and / or the humidity is greater than or equal to a second threshold value, controlling the driving mechanism to drive the first connecting member (3) to switch to the air inlet position; When it is determined that the temperature is less than a first threshold value and / or the humidity is less than a second threshold value, the driving mechanism is controlled to drive the first connecting member (3) to switch to the air outlet position.

20. A car seat, characterized in that: It comprises the seat ventilation system, seat cushion and seat backrest according to any one of claims 11 to 19, wherein the seat ventilation system is arranged on the seat cushion and / or the backrest.

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