Blowing fan structure of automobile seat

Abstract

The utility model discloses an automobile seat blowing fan structure which comprises an upper shell, a lower shell, fan blades, a PCB and a blowing connecting piece, the upper shell is connected with the lower shell, an air cavity is formed between the upper shell and the lower shell, the fan blades are rotationally arranged in the air cavity, an air inlet is formed in the upper shell, and an air outlet channel is formed in one side of the upper shell and one side of the lower shell. Air enters the air cavity through the air inlet and is exhausted through the air outlet channel, a magnetic ring rotor is coaxially fixed in the fan blade, the PCB is installed on the lower shell, a fan stator is fixedly arranged on the PCB and coaxially arranged in the magnetic ring rotor, one end of the air blowing connecting piece is used for being connected with a ventilation air bag, and the other end of the air blowing connecting piece is connected to the air outlet channel. An air blowing channel in the air blowing connecting piece communicates with the air outlet channel, air enters the air cavity through the air inlet and is blown to the ventilation air bag through the air outlet channel and the air blowing channel, and a plurality of dynamic balance mud supplementing grooves are evenly formed in the fan blades in the circumferential direction. The ventilation effect of the seat can be improved, the noise of the fan is reduced, and the driving comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a car seat blowing fan structure. Background Art

[0002] With the improvement of living standards, cars have gradually become a means of transportation for the public, and people have higher and higher requirements for car comfort. Among them, the comfort of car seats has the most critical impact on use. More and more manufacturers use seats with ventilation functions, and ventilate the seats by installing fan structures on the seats. At present, how to improve the seat ventilation effect and reduce fan noise is a major research and design direction in this field. Utility Model Content

[0003] The utility model aims to provide a car seat blowing fan structure to solve the problems existing in the above-mentioned prior art, thereby improving the seat ventilation effect, reducing fan noise and improving driving comfort.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides a blower fan structure for a car seat, comprising an upper shell, a lower shell, a fan blade, a PCB board and a blower connector, wherein the upper shell is connected to the lower shell, a wind cavity is formed between the upper shell and the lower shell, the fan blade is rotatably arranged in the wind cavity, an air inlet is arranged on the upper shell, an air outlet is arranged on one side of the upper shell and the lower shell, air enters the wind cavity from the air inlet and is discharged from the air outlet, a magnetic ring rotor is coaxially fixed in the fan blade, the PCB board is mounted on the lower shell, a fan stator is fixed on the PCB board, the fan stator is coaxially arranged in the magnetic ring rotor, one end of the blower connector is used to be connected to a ventilation air bag on a seat, and the other end is connected to the air outlet, the blower channel inside the blower connector is connected to the air outlet, air enters the wind cavity from the air inlet and is blown to the ventilation air bag on the seat from the air outlet and the blower channel, and a plurality of arc-shaped dynamic balancing mud replenishing grooves are evenly arranged on the fan blade along the circumferential direction for placing balancing mud.

[0006] Preferably, the fan blade is an injection-molded part, a central shaft is pre-buried in the middle of the fan blade, and the central shaft is rotatably connected in the wind cavity via a bearing.

[0007] Preferably, a plurality of radial first reinforcing ribs are provided in the air inlet, and the first reinforcing ribs are connected by annular reinforcing ribs.

[0008] Preferably, a plurality of second reinforcing ribs are provided on the upper shell outside the air inlet.

[0009] Preferably, a plurality of heat dissipation holes are evenly arranged on the fan blade along the circumferential direction, so as to dissipate the heat generated by the winding of the fan stator.

[0010] Preferably, a compression joint is fixedly provided at one end of the central axis, the compression joint is pre-buried in the middle of the fan blade, and the compression joint is a plum blossom-shaped steel structure.

[0011] Preferably, both the upper shell and the lower shell are provided with a clamping strip, and the blowing connector is provided with a clamping block corresponding to the clamping strip, and the clamping block and the clamping strip are clamped and connected to each other.

[0012] Preferably, the blowing connector is also provided with a toggle buckle.

[0013] Preferably, a wire outlet hole is provided on the lower shell.

[0014] Preferably, a plurality of positioning posts are provided at intervals on the outer circumference of the lower shell, and a positioning groove corresponding to each of the positioning posts is provided on the outer circumference of the upper shell, and the positioning posts are installed in the positioning grooves.

[0015] Compared with the prior art, the utility model has achieved the following technical effects:

[0016] The automobile seat blowing fan structure provided by the utility model adopts a blowing ventilation method, and the human body can feel the wind volume more obviously. The fresh air can be blown onto the seat to take away the heat on the seat, thereby improving the seat ventilation effect and improving driving comfort. The air outlet channel of the fan is connected to the ventilation air bag on the seat by a blowing connector, so that the fresh air can be better guided to the ventilation air bag to ensure the ventilation effect. By evenly arranging a plurality of arc-shaped dynamic balancing mud filling grooves on the fan blades along the circumferential direction, the balancing mud can be conveniently placed to ensure the dynamic balance of the fan blades, thereby reducing the noise during operation and improving driving comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the exploded structure of the car seat air blowing fan structure provided by the utility model;

[0019] Figure 2 It is a structural schematic diagram of the upper shell in the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the fan blades in the utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the central axis and the compression joint in the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the blowing connector of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the blowing connector of the utility model from another perspective;

[0024] Figure 7 It is a structural schematic diagram of the lower shell in the utility model.

[0025] In the figure: 1-upper shell, 2-lower shell, 3-fan blades, 4-PCB board, 5-blowing connector, 6-air inlet, 7-air outlet channel, 8-magnetic ring rotor, 9-fan stator, 10-blowing channel, 11-dynamic balancing mud filling groove, 12-center axis, 13-bearing, 14-first reinforcement rib, 15-annular reinforcement rib, 16-second reinforcement rib, 17-heat dissipation hole, 18-pressing joint, 19-card block, 20-sliding buckle, 21-wire outlet hole, 22-positioning column, 23-card strip. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model aims to provide a car seat blowing fan structure to solve the problems existing in the prior art, thereby improving the seat ventilation effect, reducing fan noise and improving driving comfort.

[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] like Figure 1-Figure 7As shown, this embodiment provides a car seat air blowing fan structure, including an upper shell 1, a lower shell 2, a fan blade 3, a PCB board 4 and an air blowing connector 5, the upper shell 1 and the lower shell 2 are connected to each other, a wind cavity is formed between the upper shell 1 and the lower shell 2, the fan blade 3 is rotatably arranged in the wind cavity, an air inlet 6 is arranged on the upper shell 1, and an air outlet channel 7 is arranged on one side of the upper shell 1 and the lower shell 2, air enters the wind cavity through the air inlet 6 and is discharged through the air outlet channel 7, a magnetic ring rotor 8 is coaxially fixed in the fan blade 3, and the PCB board 4 is installed in the lower shell 2. A fan stator 9 is fixed on the PCB board 4, and the fan stator 9 is coaxially arranged in the magnetic ring rotor 8. One end of the blowing connector 5 is used to connect with the ventilation air bag on the seat, and the other end is connected to the air outlet channel 7. The blowing channel 10 inside the blowing connector 5 is connected to the air outlet channel 7. The air enters the air cavity from the air inlet 6 and is blown toward the ventilation air bag on the seat from the air outlet channel 7 and the blowing channel 10. A plurality of arc-shaped dynamic balancing mud filling grooves 11 are evenly arranged along the circumferential direction on the fan blades 3 for placing balancing mud.

[0030] When in use, the ventilation air bag on the seat is connected through the blowing connector 5, and the air enters the wind cavity through the air inlet 6 and is blown to the ventilation air bag on the seat through the air outlet channel 7 and the blowing channel 10. By adopting the ventilation method of blowing, the human body can feel the wind volume more obviously, and the fresh air can be blown to the seat to take away the heat on the seat, thereby improving the ventilation effect of the seat and improving driving comfort. The blowing connector 5 is used to connect the fan's air outlet channel 7 with the ventilation air bag on the seat, which can better guide the fresh air to the ventilation air bag and ensure the ventilation effect. By evenly arranging a plurality of arc-shaped dynamic balancing mud filling grooves 11 on the fan blades 3 along the circumferential direction, the balancing mud can be conveniently placed to ensure the dynamic balance of the fan blades, thereby reducing the noise during operation and improving driving comfort.

[0031] In this embodiment, the fan blade 3 is an injection molded part, and a central shaft 12 is pre-buried in the middle of the fan blade 3. The central shaft 12 is rotatably connected in the wind cavity through a bearing 13.

[0032] In this embodiment, a plurality of radial first reinforcing ribs 14 are provided in the air inlet 6, and the first reinforcing ribs 14 are connected by annular reinforcing ribs 15. Fewer reinforcing ribs are provided in the air inlet 6 as much as possible, so as to ensure the strength of the upper shell 1 and provide a larger air intake.

[0033] In this embodiment, a plurality of second reinforcing ribs 16 are provided on the upper shell 1 outside the air inlet 6 to further improve the strength of the upper shell 1 .

[0034] In this embodiment, a plurality of heat dissipation holes 17 are evenly arranged on the fan blades 3 along the circumferential direction, so as to dissipate the heat generated by the windings of the fan stator 9, thereby preventing the fan blades from being overheated and increasing their service life.

[0035] In this embodiment, a crimping joint 18 is fixedly provided at one end of the central axis 12. The crimping joint 18 is pre-buried in the middle of the fan blade 3. The crimping joint 18 is a plum blossom-shaped steel structure, which can increase the injection molding strength of the axis. The fan blade 3 is more stable and has better dynamic balance during high-speed rotation, thereby better reducing noise.

[0036] In this embodiment, a clamping strip 23 is provided on both the upper shell 1 and the lower shell 2, and a clamping block 19 corresponding to the clamping strip 23 is provided on the blowing connector 5, and the clamping block 19 and the clamping strip 23 are clamped and connected with each other. The clamping strip 23 is arranged at the end of the air outlet channel 7 of the upper shell 1 and the lower shell 2, and the clamping block 19 is arranged on the inner wall of the blowing connector 5. After the air outlet channel 7 of the assembled upper shell 1 and the lower shell 2 is inserted into the air outlet channel 10 of the blowing connector 5, the clamping block 19 and the clamping strip 23 are clamped and connected with each other, which can prevent the fan from falling off. The blowing connector 5 is connected with the housing (upper shell 1 and lower shell 2) by a clamping connection method, which is convenient for installation.

[0037] In this embodiment, a sliding buckle 20 is further provided on the blowing connector 5 to facilitate the disassembly and assembly of the blowing connector 5 .

[0038] In this embodiment, a wire outlet hole 21 is provided on the lower shell 2 for leading the wire harness out of the hole to prevent the wire harness arranged in the lower shell 2 from affecting the rotation of the fan blades and causing collisions and abnormal noises.

[0039] In this embodiment, a plurality of positioning posts 22 are arranged at intervals on the outer periphery of the lower shell 2, and positioning grooves are arranged on the outer periphery of the upper shell 1 corresponding to the positioning posts 22, and the positioning posts 22 are installed in the positioning grooves. The positioning posts 22 and the positioning grooves are arranged to facilitate positioning of the upper shell 1 and the lower shell 2 during installation, and secondly, the strength of the upper and lower shells can be strengthened to prevent the upper and lower shells from falling off due to insufficient strength.

[0040] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A car seat blowing fan structure, characterized in that: The invention comprises an upper shell, a lower shell, a fan blade, a PCB board and a blowing connector, wherein the upper shell and the lower shell are connected to each other, a wind cavity is formed between the upper shell and the lower shell, the fan blade is rotatably arranged in the wind cavity, an air inlet is arranged on the upper shell, an air outlet channel is arranged on one side of the upper shell and the lower shell, air enters the wind cavity through the air inlet and is discharged through the air outlet channel, a magnetic ring rotor is coaxially fixed in the fan blade, the PCB board is mounted on the lower shell, a fan stator is fixed on the PCB board, the fan stator is coaxially arranged in the magnetic ring rotor, one end of the blowing connector is used to be connected to the ventilation air bag on the seat, and the other end is connected to the air outlet channel, the blowing channel inside the blowing connector is connected to the air outlet channel, air enters the wind cavity through the air inlet and is blown toward the ventilation air bag on the seat through the air outlet channel and the blowing channel, and a plurality of arc-shaped dynamic balancing mud replenishing grooves are evenly arranged along the circumferential direction on the fan blade for placing balancing mud.

2. The automobile seat air blowing fan structure according to claim 1, characterized in that: The fan blade is an injection-molded part, a central shaft is pre-buried in the middle of the fan blade, and the central shaft is rotatably connected in the wind cavity via a bearing.

3. The automobile seat blowing fan structure according to claim 1, characterized in that: A plurality of radial first reinforcing ribs are arranged in the air inlet, and each of the first reinforcing ribs is connected by an annular reinforcing rib.

4. The automobile seat blowing fan structure according to claim 1, characterized in that: A plurality of second reinforcing ribs are provided on the upper shell outside the air inlet.

5. The automobile seat blowing fan structure according to claim 1, characterized in that: The fan blades are evenly provided with a plurality of heat dissipation holes along the circumferential direction for dissipating the heat generated by the windings of the fan stator.

6. The automobile seat blowing fan structure according to claim 2, characterized in that: A compression joint is fixedly provided at one end of the central axis, the compression joint is pre-buried in the middle of the fan blade, and the compression joint is a plum blossom-shaped steel structure.

7. The automobile seat blowing fan structure according to claim 1, characterized in that: The upper shell and the lower shell are both provided with clamping strips, the blowing connector is provided with clamping blocks corresponding to the clamping strips, and the clamping blocks and the clamping strips are clamped and connected with each other.

8. The automobile seat blowing fan structure according to claim 7, characterized in that: The blowing connector is also provided with a toggle buckle.

9. The automobile seat blowing fan structure according to claim 1, characterized in that: The lower shell is provided with a wire outlet hole.

10. The automobile seat blowing fan structure according to claim 1, characterized in that: A plurality of positioning posts are arranged at intervals on the outer circumference of the lower shell, and a positioning groove corresponding to each of the positioning posts is arranged on the outer circumference of the upper shell, and the positioning posts are installed in the positioning grooves.

Images