Vehicle-mounted fan for back of automobile seat

By designing a car fan including a base, side panel and multi-angle rotating connection components, the problem of difficulty in installing existing car fans to the back of new energy vehicle seats is solved, and the blowing needs of rear passengers and drivers are met.

CN119934050APending Publication Date: 2025-05-06深圳市喀特科技有限公司
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Patent Information

Application Number
CN202510090543.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-21
Publication Date
2025-05-06

AI Technical Summary

Technical Problem

The existing on-board fans are difficult to install on the back of seats of new energy vehicles such as Tesla cars, resulting in limited application scope and cannot effectively meet the blowing needs of rear passengers.

Method used

A car-mounted fan for the back of a car seat is designed, and a slot is formed through the base, the first side plate and the second side plate, and combined with a connecting component that drives the fan head to rotate from multiple angles, the multi-directional adjustment and installation of the fan head is realized.

Benefits of technology

This design makes the on-board fan easy to be installed on the back of seats such as Tesla cars, provided for rear passengers to use, and the fan head is adjusted by multi-angle fan head to meet the comfortable blowing needs of drivers or co-drivers.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of vehicle-mounted fans, and provides a vehicle-mounted fan for the back of an automobile seat, the vehicle-mounted fan comprises a base, a first side plate and a second side plate, the upper end of the first side plate and the upper end of the second side plate are both arranged on the lower surface of the base, and the first side plate and the second side plate are parallel to each other; a clamping groove is formed between the opposite side faces of the first side plate and the second side plate and the lower surface of the base. At least one connecting assembly is arranged on the upper surface of the base, and a fan head is arranged at the end, away from the base, of any connecting assembly. Any connecting assembly is configured to drive the fan head on the connecting assembly to rotate at multiple angles; the overall structural design is simple, the fan head is conveniently installed on the back of an automobile seat, the fan head can be used by passengers in the back row to meet the blowing requirement of the passengers in the back row, the blowing angle of the fan head can be adjusted in multiple directions so that comfortable blowing experience can be provided for a driver or a co-driver, and the using effect is good.
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Description

Technical Field

[0001] The invention relates to the technical field of vehicle-mounted fans, and more particularly to a vehicle-mounted fan for a car seat back. Background Art

[0002] With the popularity of automobiles, many car accessories for automobiles have appeared on the market, such as car fans. However, most of the existing car fans can only be fixed to the center console of the car through a flat base, which is not convenient to be installed on the back of the car seat for use by the back row personnel. Its blowing effect is better for the front row personnel, but poor for the back row personnel. Especially for the application of existing car fans in new energy vehicles, such as Tesla cars, which are relatively well-known in the market, Tesla cars have abandoned the traditional car seat design and do not have a headrest rod, resulting in the inability to fix the existing car fan on the back of its seat through auxiliary parts such as straps, and the application range is limited. It is known that the back of the seat of Tesla cars is composed of a leather back plate and a plastic back plate, and there is a card seam between the leather back plate and the plastic back plate. Therefore, it is very necessary to design a car fan that can be adapted to the card seam to be installed on the back of the Tesla car seat to meet the blowing needs of each driver and passenger. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a vehicle-mounted fan for the back of a car seat in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a car-mounted fan for the back of a car seat, comprising a base, a first side panel and a second side panel, the upper ends of the first side panel and the second side panel are both arranged on the lower surface of the base, the first side panel and the second side panel are parallel to each other, and a slot is formed between the opposite sides of the first side panel and the second side panel and the lower surface of the base; at least one connecting component is provided on the upper surface of the base, and a fan head is provided at one end of any connecting component away from the base; any connecting component is configured to drive the fan head thereon to rotate at multiple angles.

[0005] In some embodiments, the base or the first side plate is provided with a locking assembly, the locking assembly comprising a locking adjustment portion and a pressing piece connected to the locking adjustment portion; the second side plate is provided with an avoidance opening corresponding to the pressing piece;

[0006] When the locking adjustment part is arranged on the base, the pressing piece is located at the avoidance opening, and the locking adjustment part is used to drive the pressing piece to move toward or away from the first side plate;

[0007] When the locking adjustment part is arranged on the first side plate, the pressing piece is located in the slot, and the locking adjustment part is used to drive the pressing piece to move toward or away from the avoidance opening.

[0008] In some embodiments, the locking adjustment portion includes a first knob and a screw disposed in the base, the outer peripheral portion of the first knob extends out of the base, and the screw is fixedly connected to the first knob; the pressing piece is provided with a screw hole column and a guide column extending into the base, and the end of the screw away from the first knob is threadedly connected to the screw hole column.

[0009] In some embodiments, the locking adjustment portion includes a second knob and a guide block movably arranged on the first side panel, the second knob is located on the side of the first side panel facing away from the second side panel, the interior of the second knob is hollow and its inner wall is provided with an internal thread; the guide block has two relatively distributed straight edges and two relatively distributed arc-shaped convex edges, and the side surfaces opposite to each other of the two arc-shaped convex edges are provided with external threads; one end of the guide block located in the slot is fixedly connected to the pressing piece, and the other end of the guide block located outside the slot extends into the second knob, and the external threads on the two arc-shaped convex edges of the guide block are threadably connected with the internal threads on the inner wall of the second knob.

[0010] In some embodiments, two baffles that are inserted into the second knob are detachably connected to the first side panel, and the opposite side surfaces of the two baffles correspond to the two straight edges of the guide block one by one, and the side surfaces of the two baffles that are opposite to the inner wall of the second knob are both arc-shaped convex surfaces; the ends of the two baffles away from the first side panel are both arranged on a mounting platform, and the side of the mounting platform facing away from the two baffles is detachably connected to a universal ball bearing.

[0011] In some embodiments, a magnetic bracket is provided on a side surface of the first side panel facing away from the second side panel; the magnetic bracket includes a fixed portion and a magnetic portion connected to the fixed portion, the fixed portion is rotatably disposed on the first side panel through a rotating assembly, and the magnetic portion is used to magnetically attract electronic equipment.

[0012] In some embodiments, the magnetic part is connected to the fixed part through the supporting part, and the two ends of the supporting part are rotatably connected to the magnetic part and the fixed part through a rotating shaft respectively, and the fixed part and the supporting part, and the supporting part and the magnetic part can be folded or unfolded with each other.

[0013] In some embodiments, the rotating assembly includes a disc and a gear ring disposed on the disc, and the disc is fixed to the first side plate via a fastening assembly; the fixing portion cover is buckled on the disc and rotationally cooperates with the gear ring via a locking assembly.

[0014] In some embodiments, any of the connecting components includes a supporting hose and a U-shaped mounting frame arranged at the upper end of the supporting hose; the lower end of the supporting hose is fixedly arranged on the upper surface of the base, and the fan head is rotatably mounted on the U-shaped mounting frame via a rotating shaft.

[0015] In some embodiments, the upper surface of the base is further provided with at least one convex portion with a hollow interior, and the lower end of any of the supporting hoses is fixedly inserted into the corresponding convex portion.

[0016] In some embodiments, at least one hook is further provided on a side surface of the first side panel facing away from the second side panel, and any of the hooks is rotatably arranged via a rotating shaft so as to be flipped, unfolded or folded relative to the first side panel.

[0017] The beneficial effects of the present invention are: different from the prior art, the car-mounted fan for the back of a car seat of the present invention is formed with a slot through the base, the first side panel and the second side panel, and is easy to install; the base is also configured with a fan head through a connecting component; any connecting component can drive the fan head thereon to rotate at multiple angles; it can not only be used by rear passengers to meet the blowing needs of the rear passengers, but also the blowing angle of the fan head can be adjusted in multiple directions to provide the driver or the co-driver with a comfortable blowing experience, the overall structural design is simple, and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front view schematic diagram of a vehicle-mounted fan in the first embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of an exploded structure of a vehicle-mounted fan in Embodiment 1 of the present invention;

[0020] Figure 3 is another exploded structural schematic diagram of the vehicle-mounted fan in the first embodiment of the present invention;

[0021] Figure 4 is a schematic upward side view of the vehicle-mounted fan in the second embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of an exploded structure of a vehicle-mounted fan in Embodiment 2 of the present invention;

[0023] Figure 6 is another exploded structural schematic diagram of the vehicle-mounted fan in the second embodiment of the present invention;

[0024] Figure 7 is a front side schematic diagram of a vehicle-mounted fan in Embodiment 3 of the present invention;

[0025] Figure 8 is a left side schematic diagram of a vehicle-mounted fan in Embodiment 3 of the present invention;

[0026] Fig. 9 It is a schematic diagram of an exploded structure of the magnetic bracket in the third embodiment of the present invention;

[0027] Fig.10 is another schematic diagram of the exploded structure of the magnetic bracket in the third embodiment of the present invention;

[0028] The names and serial numbers in the figure are as follows: base 1; first side plate 2; second side plate 3; slot 10; fan head 5; support hose 41; U-shaped mounting frame 42; protrusion 11; hook 21; accommodating groove 201; locking adjustment part 61; pressing piece 62; avoidance opening 301; first knob 611; screw rod 612; screw hole column 621; guide column 622; second knob 613; guide block 614; baffle 22; mounting table 23; universal ball support 24; magnetic bracket 7; fixing part 71; magnetic part 72; supporting part 73; disc 81; gear ring 82; concave cavity 710; mounting groove 91; elastic member 92; positioning block 93; through hole 810; protrusion 7101. DETAILED DESCRIPTION

[0029] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0032] Moreover, the terms "up, down, front, back, left, right, upper end, lower end" and the like indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0034] Embodiment 1: The embodiment of the present invention provides a car seat back fan, such as Figures 1 to 3 As shown in the figure, the car fan for the back of a car seat includes a base 1, a first side panel 2 and a second side panel 3. The upper ends of the first side panel 2 and the second side panel 3 are both arranged on the lower surface of the base 1. The first side panel 2 and the second side panel 3 are parallel to each other. A card slot 10 is formed between the opposite sides of the first side panel 2 and the second side panel 3 and the lower surface of the base 1; at least one connecting component is provided on the upper surface of the base 1, and a fan head 5 is provided at one end of any connecting component away from the base 1; any connecting component is configured to drive the fan head 5 thereon to rotate at multiple angles.

[0035] In this embodiment, the first side plate 2, the second side plate 3 and the base 1 are all integrally connected, and the side surfaces of the first side plate 2 and the second side plate 3 facing away from each other are flush with the two outer side surfaces of the base 1. Specifically, there are two groups of connection components, each of which includes a support hose 41 and a U-shaped mounting frame 42 provided at the upper end of the support hose 41; the lower end of the support hose 41 is fixedly provided on the upper surface of the base 1, and the fan head 5 is rotatably mounted on the U-shaped mounting frame 42 through a rotating shaft. The support hose 41 can drive the fan head 5 to rotate at multiple angles, thereby adjusting the blowing angle of the fan head 5. For example, one of the support hoses 41 supports the fan head 5 backwards, so that air can be blown to the rear passengers, and the other support hose 41 is rotated to drive the fan head 5 to rotate forward to a suitable position, so that air can be blown to the driver or the co-pilot.

[0036] Furthermore, the upper surface of the base 1 is provided with two hollow convex parts 11, which are spaced apart on the left and right sides, and the lower ends of the two supporting hoses 41 are fixedly inserted into the two convex parts 11 one by one. The interiors of the two supporting hoses 41 are both hollow for wiring; the base 1 should be provided with an electric control component and a power supply component electrically connected to the electric control component, and the electric control component is also electrically connected to the fan head 5 through a wire, which passes through the convex parts 11 and the supporting hoses 41 in turn.

[0037] In this embodiment, two hooks 21 are provided on one side of the first side plate 2 facing away from the second side plate 3, and the two hooks 21 are also spaced apart on the left and right sides. Two receiving grooves 201 are also provided on one side of the first side plate 2 facing away from the second side plate 3, and the two hooks 21 are respectively rotatably arranged in the two receiving grooves 201 through a rotating shaft. When the hooks 21 are turned over and unfolded, they can be used to hook objects, and when the hooks 21 are turned over and retracted, they are stored in the receiving grooves 201, and the overall appearance is beautiful.

[0038] In this embodiment, the locking assembly includes a locking adjustment part 61 and a pressing piece 62 connected to the locking adjustment part 61; the second side plate 3 is provided with an escape opening 301 corresponding to the pressing piece 62. Specifically, the locking adjustment part 61 is provided on the base 1, and the pressing piece 62 is located at the escape opening 301. The locking adjustment part 61 is used to drive the pressing piece 62 to move in a direction close to or away from the first side plate 2. When the second side plate 3 is inserted into the slot, the pressing piece 62 is also located on the inner side of the plastic back plate, and the corresponding part of the top of the plastic back plate is inserted into the slot 10, and the first side plate 2 is located on the outer side of the plastic back plate. Then, the pressing piece 62 is driven to move by the locking adjustment part 61, so that the pressing piece 62 and the first side plate 2 are relatively clamped at the corresponding positions of the inner and outer sides of the plastic back plate, so as to further increase the stability of the installation. The pressing piece 62 is in the shape of a plate. In order to further increase the stability of clamping on the plastic back plate, an anti-slip pad should be provided on the contact surface of the pressing piece 62 and / or the first side plate 2. It can be understood that the "contact surface" refers to the surface that contacts the inner and outer sides of the plastic back plate.

[0039] The locking adjustment part 61 includes a first knob 611 and a screw rod 612 disposed in the base 1. The outer peripheral portion of the first knob 611 extends out of the base 1 to facilitate the operation of the first knob 611 to rotate. The screw rod 612 is fixedly connected to the first knob 611. The pressure piece 62 is provided with a screw hole column 621 and a guide column 622 extending into the base 1. One end of the screw rod 612 away from the first knob 611 is threadedly connected to the screw hole column 621. When the first knob 611 is rotated, the screw rod 612 also rotates synchronously. Under the guide limit of the guide column 622, the screw hole column 621 can be driven to move by the screw rod 612, so as to achieve the purpose of moving the driving end pressure piece 62.

[0040] Embodiment 2: The embodiment of the present invention provides a car seat back fan, such as Figures 4 to 6 As shown in , the structure of the vehicle-mounted fan for the back of the vehicle seat is basically the same as that described in the first embodiment, except that the setting position of the locking assembly is different:

[0041] In this embodiment, the locking assembly also includes a locking adjustment portion 61 and a pressure piece 62 connected to the locking adjustment portion 61. Specifically, the locking adjustment portion 61 is provided on the first side panel 2, the pressure piece 62 is located in the card slot 10, and the locking adjustment portion 61 is used to drive the pressure piece 62 to move toward or away from the avoidance opening 301. When the second side panel 3 is inserted into the card slot, the corresponding part of the top of the plastic back panel will be inserted into the card slot 10, and the first side panel 2 and the pressure piece 62 are both located on the outside of the plastic back panel. Then, the pressure piece 62 is driven to move by the locking adjustment portion 61, so that the pressure piece 62 and the second side panel 3 are relatively clamped at the corresponding positions of the outer and inner sides of the plastic back panel, so as to further increase the stability of the installation.

[0042] The locking and adjusting part 61 includes a second knob 613 and a guide block 614 movably arranged on the first side plate 2. The second knob 613 is located on the side of the first side plate 2 facing away from the second side plate 3. The outer periphery of the second knob 613 also partially extends out of the lower edge of the first side plate 2, so as to facilitate the operation of the second knob 613 to rotate. The interior of the second knob 613 is hollow and its inner wall is provided with internal threads; the guide block 614 has two relatively distributed straight edges and two relatively distributed arc-shaped convex edges, and the two arc-shaped convex edges are provided with external threads on the opposite sides; one end of the guide block 614 located in the card slot 10 is fixedly connected with the pressing piece 62, and the other end of the guide block 614 located outside the card slot 10 extends into the second knob 613, and the external threads on the two arc-shaped convex edges of the guide block 614 are threadedly connected with the internal threads on the inner wall of the second knob 613. When the second knob 613 is rotated, the guide block 614 can be driven to move, thereby driving the pressing piece 62 to move. Correspondingly, a through hole for the guide block 614 to penetrate is provided on the first side plate 2, and the through hole is adapted to the guide block 614, so that the guide block 614 can move along a predetermined direction under the drive of the second knob 613. It should be noted that the distance that the pressing piece 62 can move in the card slot 10 should be less than the length of the threaded engagement between the second knob 613 and the guide block 614, so as to ensure that a part of the guide block 614 is always located in the second knob 613.

[0043] Further, the first side plate 2 is detachably connected with two baffles 22 that penetrate the second knob 613. For example, the ends of the two baffles 22 close to the first side plate 2 are mounted on the first side plate 2 by screws or other fasteners. The ends of the two baffles 22 away from the first side plate 2 pass through the interior of the second knob 613, wherein the opposite side surfaces of the two baffles 22 are both planes and correspond to the two straight edges of the guide block 614 one by one, and the side surfaces of the two baffles 22 opposite to the inner wall of the second knob 613 are both arc-shaped convex surfaces, so as to ensure that the second knob 613 can rotate smoothly and the guide block 614 can move between the two baffles 22. The ends of the two baffles 22 away from the first side plate 2 are both arranged on a mounting platform 23, and the side of the mounting platform 23 facing away from the two baffles 22 is detachably connected with a universal ball bearing 24, for example, the universal ball bearing 24 is mounted on the mounting platform 23 by screws or other fasteners. The universal ball support 24 is used to connect an electronic device bracket with a universal ball clamp, so as to achieve the purpose of clamping electronic devices such as mobile phones. It should be noted that the structure of the electronic device bracket with a universal ball clamp is relatively existing. In actual application, it can refer to the existing technology. This embodiment does not make specific limitations, and it should be based on actual application.

[0044] Embodiment 3: The embodiment of the present invention provides a car seat back fan, such as Figures 7 to 10 As shown in the figure, the structure of the vehicle-mounted fan for the back of the vehicle seat is basically the same as that described in the first embodiment, except that:

[0045] In this embodiment, the upper end of the support hose 41 is directly fixedly connected to the rear seat of the fan head 5 .

[0046] In this embodiment, a magnetic bracket 7 is further provided on one side of the first side plate 2 facing away from the second side plate 3. Specifically, the magnetic bracket 7 includes a fixing portion 71 and a magnetic portion 72 connected to the fixing portion 71. The fixing portion 71 is rotatably disposed on the first side plate 2 through a rotating assembly and is located between the two hooks 21. The magnetic portion 72 is used to magnetically attract electronic devices such as mobile phones.

[0047] Specifically, the magnetic part 72 is connected to the fixed part 71 through the supporting part 73, and the two ends of the supporting part 73 are rotatably connected to the magnetic part 72 and the fixed part 71 through a rotating shaft respectively. The fixed part 71 and the supporting part 73, and the supporting part 73 and the magnetic part 72 can be folded or unfolded with each other, for example, in a Z-shape.

[0048] In this embodiment, the rotating assembly includes a disk 81 and a gear ring 82 disposed on the disk 81, and the disk 81 is fixed to the first side plate 2 by a fastening assembly; specifically, the fastening assembly includes screws and nuts, and the disk 81 is fastened to the first side plate 2 by screws and nuts. The fixing portion 71 is buckled on the disk 81 and rotates with the gear ring 82 through the locking assembly, so that the fixing portion 71 can rotate at a suitable angle relative to the disk 81 under the rotational cooperation with the gear ring 82. Furthermore, a concave cavity 710 for accommodating the disc 81 and the gear ring 82 is provided on one side surface of the fixing portion 71 facing the first side plate 2, and two groups of the locking components are provided, and the two groups of the locking components are relatively distributed and arranged in the concave cavity 710; when the disc 81 and the gear ring 82 are located in the concave cavity 710, the two groups of the locking components are relatively located on the outer periphery of the gear ring 82 and correspondingly engage with the gear teeth on the gear ring 82, so as to form a relative locking force on the gear ring 82, and effectively ensure the stability of the locking cooperation between the fixing portion 71 and the gear ring 82. Each of the locking components includes a mounting groove body 91 disposed in the concave cavity 710, an elastic member 92 and a positioning block 93 disposed in the mounting groove body 91, one end of the positioning block 93 is connected to the elastic member 92, and the other end of the positioning block 93 extends out of the mounting groove body 91 and engages with the gear teeth on the gear ring 82. Under the action of the elastic member 92, the positioning block 93 is movable, and when the fixing portion 71 rotates relative to the disk 81, the positioning block 93 can mesh with the corresponding gear teeth on the gear ring 82 as the fixing portion 71 rotates. The elastic member 92 is, for example, a spring.

[0049] In order to ensure the rotational stability between the fixing part 71 and the disk 81, a through hole 810 is provided at the central position of the disk 81, and a convex column 7101 is provided at the central position of the side of the cavity 710 opposite to the disk 81; when the disk 81 and the gear ring 82 are located in the cavity 710, the convex column 7101 is inserted into the through hole 810, so that the fixing part 71 can rotate stably with the center position of the matching convex column 7101 and the through hole 810 as the center of the circle.

[0050] It should be understood that, for ordinary technical workers in the field, improvements or changes can be made based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A car fan for the back of a car seat, characterized in that: It includes a base, a first side plate and a second side plate, the upper ends of the first side plate and the second side plate are both arranged on the lower surface of the base, the first side plate and the second side plate are parallel to each other, and a slot is formed between the opposite sides of the first side plate and the second side plate and the lower surface of the base; at least one connecting component is provided on the upper surface of the base, and a fan head is provided at one end of any connecting component away from the base; any connecting component is configured to drive the fan head thereon to rotate at multiple angles.

2. The vehicle-mounted fan for the back of a vehicle seat according to claim 1, characterized in that: The base or the first side plate is provided with a locking assembly, the locking assembly comprising a locking adjustment portion and a pressing piece connected to the locking adjustment portion; the second side plate is provided with an avoidance opening corresponding to the pressing piece; When the locking adjustment part is arranged on the base, the pressing piece is located at the avoidance opening, and the locking adjustment part is used to drive the pressing piece to move toward or away from the first side plate; When the locking adjustment part is arranged on the first side plate, the pressing piece is located in the slot, and the locking adjustment part is used to drive the pressing piece to move toward or away from the avoidance opening.

3. The vehicle-mounted fan for the back of a vehicle seat according to claim 2, characterized in that: The locking adjustment part includes a first knob and a screw rod arranged in the base, the outer peripheral part of the first knob extends out of the base, and the screw rod is fixedly connected to the first knob; the pressing piece is provided with a screw hole column and a guide column extending into the base, and the end of the screw rod away from the first knob is threadedly connected to the screw hole column.

4. The vehicle-mounted fan for the back of a vehicle seat according to claim 2, characterized in that: The locking adjustment part includes a second knob and a guide block movably arranged on the first side plate, the second knob is located on the side of the first side plate facing away from the second side plate, the interior of the second knob is hollow and its inner wall is provided with an internal thread; the guide block has two relatively distributed straight edges and two relatively distributed arc-shaped convex edges, and the side surfaces opposite to each other of the two arc-shaped convex edges are provided with external threads; one end of the guide block located in the slot is fixedly connected to the pressing piece, and the other end of the guide block located outside the slot extends into the second knob, and the external threads on the two arc-shaped convex edges of the guide block are threadably connected with the internal threads on the inner wall of the second knob.

5. The vehicle-mounted fan for the back of a vehicle seat according to claim 4, characterized in that: The first side plate is detachably connected to two baffles which are inserted into the second knob, and the opposite side surfaces of the two baffles correspond to the two straight edges of the guide block one by one, and the side surfaces of the two baffles which are opposite to the inner wall of the second knob are both arc-shaped convex surfaces; the ends of the two baffles which are away from the first side plate are arranged on a mounting platform, and the side of the mounting platform which is away from the two baffles is detachably connected to a universal ball bearing.

6. The vehicle-mounted fan for the back of a vehicle seat according to claim 1, characterized in that: A magnetic bracket is provided on one side surface of the first side plate facing away from the second side plate; the magnetic bracket includes a fixing portion and a magnetic portion connected to the fixing portion, the fixing portion is rotatably arranged on the first side plate through a rotating assembly, and the magnetic portion is used to magnetically attract electronic equipment.

7. The vehicle-mounted fan for the back of a vehicle seat according to claim 6, characterized in that: The magnetic part is connected to the fixed part through the supporting part, and the two ends of the supporting part are rotatably connected to the magnetic part and the fixed part through a rotating shaft respectively. The fixed part and the supporting part, and the supporting part and the magnetic part can be folded or unfolded with each other.

8. The vehicle-mounted fan for the back of a vehicle seat according to claim 6 or 7, characterized in that: The rotating assembly comprises a disc and a gear ring arranged on the disc, and the disc is fixed on the first side plate through a fastening assembly; the fixing portion cover is buckled on the disc and rotatably cooperates with the gear ring through a locking assembly.

9. The vehicle-mounted fan for the back of a vehicle seat according to claim 1, characterized in that: Any of the connecting components comprises a supporting hose and a U-shaped mounting frame arranged at the upper end of the supporting hose; the lower end of the supporting hose is fixedly arranged on the upper surface of the base, and the fan head is rotatably mounted on the U-shaped mounting frame via a rotating shaft.

10. The vehicle-mounted fan for the back of a vehicle seat according to claim 9, characterized in that: The upper surface of the base is also provided with at least one convex portion with a hollow interior, and the lower end of any of the supporting hoses is fixedly inserted in the corresponding convex portion.

11. The vehicle-mounted fan for the back of a vehicle seat according to any one of claims 1-7, 9 and 10, characterized in that: At least one hook is also provided on a side surface of the first side plate facing away from the second side plate, and any of the hooks is rotatably arranged via a rotating shaft so as to be flipped, unfolded or folded relative to the first side plate.