Blower facility

Abstract

The utility model relates to air supply equipment which comprises a main machine body, an air supply device and an air supply device. The bracket is rotatably mounted on the mounting seat in a first direction; the air supply device is mounted on the bracket; and the folding driving assembly is installed at the joint of the support and the air supply device, and the folding driving assembly is used for driving the support to rotate in the first direction so that the air supply device can be switched between the unfolded state away from the main machine body and the folded state close to the main machine body. According to the air supply equipment, due to the fact that the support is automatically driven by the folding driving assembly to rotate in the first direction so that the air supply device can be switched between the unfolded state and the folded state, folding and storage operation can be carried out instead of the two hands of a user, and folding and storage of the air supply equipment are facilitated; and potential safety hazards in the manual folding process are eliminated.

Description

Technical Field

[0001] The present application relates to the technical field of cooling equipment, and in particular to an air supply device. Background Art

[0002] With the development of science and technology and the improvement of living standards, people's requirements for living environment comfort are gradually increasing. Electric fans use motors to drive the blades to accelerate air circulation, providing cooling and air circulation. They are widely used in people's production and daily life, effectively improving people's living and working environments.

[0003] Electric fans typically consist of a main body and a head mounted on the main body. To improve storage convenience, some fans feature a foldable design, allowing users to flip the head upside down to fold it for easier storage. However, during the folding process, the head can easily pinch a user's hand if they are not careful, posing a safety hazard and impacting the user experience. Utility Model Content

[0004] The present application provides an air supply device to address the potential safety hazard of an electric fan during its folding process.

[0005] According to one aspect of the present application, there is provided an air supply device, comprising:

[0006] A main body, one end of which is provided with a mounting seat;

[0007] a bracket, rotatably mounted on the mounting seat around a first direction;

[0008] an air supply device, mounted on the bracket; and

[0009] A folding drive assembly is installed at the connection between the bracket and the air supply device. The folding drive assembly is used to drive the bracket to rotate around the first direction so that the air supply device switches between an unfolded state away from the main body and a folded state close to the main body.

[0010] In one embodiment, the folding drive assembly includes:

[0011] A driving member fixedly connected to the mounting seat; and

[0012] The gear transmission mechanism is configured to connect the driving member and the bracket, and the driving member drives the bracket to rotate around the first direction through the gear transmission mechanism.

[0013] In one embodiment, the mounting seat includes an assembly wall, the assembly wall is provided with a connecting hole, the driving member includes a driving member body and an output shaft, the driving member body is supported by the assembly wall, and the output shaft passes through the connecting hole and is connected to the gear transmission mechanism.

[0014] In one embodiment, a positioning groove is provided on the edge of the assembly wall, and a positioning member is provided on the driving member body, and the positioning member is fixed in the positioning groove.

[0015] In one embodiment, the gear transmission mechanism includes:

[0016] a first bevel gear, connected to the driving member, and driven by the driving member to rotate in a second direction perpendicular to the first direction; and

[0017] The second bevel gear is fixed to the bracket and meshes with the first bevel gear. The second bevel gear rotates around the first direction under the drive of the first bevel gear.

[0018] In one embodiment, the mounting seat is provided with two rotating shaft grooves spaced apart in the first direction, the bracket has a first rotating shaft and a second rotating shaft spaced apart in the first direction, the first rotating shaft and the second rotating shaft are respectively limited in one of the rotating shaft grooves, and the second bevel gear is fixed between the first rotating shaft and the second rotating shaft.

[0019] In one embodiment, the second bevel gear is provided with two spaced-apart fixing screw columns on one end face in the axial direction, and the second bevel gear is provided with a connecting screw column on the other end face in the axial direction. The two fixing screw columns are inserted into the first rotating shaft, and the connecting screw column is inserted into the second rotating shaft.

[0020] In one embodiment, the air supply device further includes an outer cover, which is disposed on the mounting seat. The outer cover and the mounting seat together form an accommodating space for accommodating the folding drive assembly.

[0021] In one embodiment, the outer cover is provided with two rotation axis limiting portions spaced apart in the first direction, and each of the rotation axis limiting portions is correspondingly inserted into one of the rotation axis grooves to limit the first rotation axis and the second rotation axis.

[0022] In one embodiment, the mounting seat is provided with a fixing buckle, and the outer cover is provided with a snap buckle, and the fixing buckle and the snap buckle are engaged with each other so that the mounting seat and the outer cover are matched with each other.

[0023] In one embodiment, the mounting seat is provided with a mounting seat screw column, and the outer cover is provided with an outer cover screw column, and the outer cover screw column is correspondingly connected to the mounting seat screw column.

[0024] In the above-mentioned air supply device, the folding drive component automatically drives the bracket to rotate around the first direction to realize the switching of the air supply device between the unfolded state and the folded state, thereby replacing the user's hands to perform the folding and storage operation, facilitating the folding and storage of the air supply device and eliminating safety hazards during manual folding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of an air supply device of an embodiment of the present application when the air supply device is in an unfolded state.

[0026] Figure 2 This is a structural schematic diagram of an air supply device of an embodiment of the present application when the air supply device is in a folded state.

[0027] Figure 3 This is a partial structural diagram of an air supply device according to an embodiment of the present application.

[0028] Figure 4 This is a top view of the air supply device of an air supply equipment according to an embodiment of the present application when the air supply device is in a folded state.

[0029] Figure 5 for Figure 4 A partial enlarged schematic diagram of point A of the air supply equipment shown.

[0030] Figure 6 This is a structural schematic diagram of a mounting base for air supply equipment according to an embodiment of the present application.

[0031] Figure 7 for Figure 6 A schematic structural diagram of the mounting base shown in another angle.

[0032] Figure 8 for Figure 6 A schematic structural diagram of the mounting base shown in another angle.

[0033] Figure 9 This is a schematic structural diagram of a bracket for air supply equipment according to an embodiment of the present application.

[0034] Figure 10 for Figure 9 A schematic structural diagram of the bracket shown at another angle.

[0035] Figure 11 Schematic diagram of the structure of the first bevel gear according to an embodiment of the present application.

[0036] Figure 12Schematic diagram of the structure of the second bevel gear according to an embodiment of the present application.

[0037] Figure 13 Schematic diagram of the structure of an outer cover according to an embodiment of the present application.

[0038] Description of Figure Numbers:

[0039] 100, air supply device; 10, main body; 12, mounting base; 121, first mounting portion; 121a, mating groove; 123, second mounting portion; 1232, mounting bottom wall; 1232a, mounting base screw column; 1234, mounting side wall; 1234a, rotating shaft groove; 1236, assembly wall; 1236a, communicating hole; 1236b, positioning groove; 125, fixing buckle; 30, air supply device; 50, bracket; 52, bracket mounting portion; 521, first rotating shaft; 523, second rotating shaft; 54, support arm; 70, folding drive assembly; 72, drive member; 721, drive member body; 723, output shaft; 74, gear transmission mechanism; 741, first bevel gear; 7412, mounting sleeve; 743, second bevel gear; 7432, fixing screw column; 7434, connecting screw column; 90, outer cover; 92, shaft limiter; 94, buckle; 96, outer cover screw column. DETAILED DESCRIPTION

[0040] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0043] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0044] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0045] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0046] See Figure 1 The embodiment of the present application provides an air supply device 100, comprising a main body 10 and an air supply device 30. The main body 10 is a generally vertically extending cylindrical structure. The air supply device 30 is mounted at one end of the main body 10 and comprises an air supply housing, blades disposed within the air supply housing, and a blade drive member. The blades can rotate under the drive of the blade drive member 72, thereby forming a directional airflow to achieve a cooling effect. It is understood that the overall structure of the air supply device 100 is not limited to this and can be configured as needed to meet different cooling requirements.

[0047] like Figure 1 and Figure 2 As shown, in order to achieve foldable storage of the air supply device 100, the air supply device 100 further includes a bracket 50 and a folding drive assembly 70. Specifically, a mounting base 12 is provided at one end of the main body 10, and the bracket 50 is rotatably mounted on the mounting base 12 about a first direction. The folding drive assembly 70 is installed at the connection between the bracket 50 and the air supply device 30. The folding drive assembly 70 is used to drive the bracket 50 to rotate about the first direction, so that the air supply device 30 switches between an expanded state away from the main body 10 and a folded state close to the main body 10.

[0048] In the above-mentioned air supply device 100, the bracket 50 is automatically driven to rotate around the first direction by the folding drive component 70 to enable the air supply device 30 to switch between the unfolded state and the folded state, thereby replacing the user's hands to perform the folding and storage operation, facilitating the folding and storage of the air supply device 100, and eliminating safety hazards during manual folding.

[0049] In the following embodiments, the vertical direction is defined as Figure 2 The Z direction in the first direction is Figure 4 The X direction in the second direction is Figure 2 In the Y direction, the first direction and the second direction extend horizontally, and the first direction, the second direction and the vertical direction are perpendicular to each other.

[0050] When the air supply device 30 is in the unfolded state, it is located directly above the main body 10 in the vertical direction, and the axis of the air supply device 30 is parallel to the second direction. When the air supply device 30 is in the folded state, it rotates downward to one side of the main body 10 in the second direction, and the axis of the air supply device 30 remains parallel to the second direction.

[0051] See also Figures 3 to 5 In some embodiments, the folding drive assembly 70 includes a drive member 72 and a gear transmission mechanism 74. The drive member 72 is fixed to the mounting base 12, and the gear transmission mechanism 74 is connected to the drive member 72 and the bracket 50. The drive member 72 drives the bracket 50 to rotate about the first direction through the gear transmission mechanism 74.

[0052] Unlike the manual folding solution, which requires the use of bolts and nuts to fix and increase damping to achieve the folding positioning function, resulting in the failure of the folding mechanism after long-term folding use, this application uses the cooperation of the driving member 72 and the gear transmission mechanism 74 to achieve the folding function, which is unlikely to fail even after long-term use, effectively improving the user experience of the air supply equipment 100.

[0053] Please combine Figures 6 to 8As shown, the mounting base 12 includes a first mounting portion 121 and a second mounting portion 123. The first mounting portion 121 is a hollow cylindrical structure. The first mounting portion 121 can be vertically mounted on one end of the main body 10 or can be integrally formed with the main body 10. One end of the second mounting portion 123 is connected to the first mounting portion 121, and the other end of the second mounting portion 123 extends obliquely upward away from the first mounting portion 121. The bracket 50 is rotatably mounted on the end of the second mounting portion 123 away from the first mounting portion 121. The folding drive assembly 70 is disposed within the mounting base 12.

[0054] Furthermore, the second mounting portion 123 includes a mounting bottom wall 1232, two mounting side walls 1234, and an assembly wall 1236. One end of the mounting bottom wall 1232 is connected to the first mounting portion 121, and the other end of the mounting bottom wall 1232 extends obliquely upward in a direction away from the first mounting portion 121. The two mounting side walls 1234 are respectively disposed on opposite sides of the mounting bottom wall 1232 in the first direction. Each end of the two mounting side walls 1234, which is away from the first mounting portion 121, defines a rotation axis slot 1234a. The two rotation axis slots 1234a are spaced apart in the first direction for mounting the bracket 50. The assembly wall 1236 is disposed on a side of the mounting bottom wall 1232 away from the main body 10 and is located between the two mounting side walls 1234. The assembly wall 1236 defines a connecting hole 1236a. The driving member 72 of the folding drive assembly 70 is fixed to the mounting base 12 through the mounting wall 1236 and is transmission-connected to the bracket 50 through the connecting hole 1236a.

[0055] See also Figure 5 、 Figure 9 as well as Figure 10 The bracket 50 generally includes a bracket mounting portion 52 and two support arms 54. The bracket mounting portion 52 is rotatably mounted about a first direction on the second mounting portion 123 of the mounting base 12 at an end away from the main body 10. The two support arms 54 are located on opposite sides of the bracket mounting portion 52 in the first direction, and one end of each support arm 54 is connected to the bracket mounting portion 52, and the other end of the support arm 54 is bent and extended toward the end away from the connection bracket 50. The two support arms 54 together form a semicircular structure, and the air supply device 30 is installed between the two support arms 54.

[0056] Specifically, the bracket mounting portion 52 includes two first rotating shafts 521 and second rotating shafts 523 that are arranged opposite to each other in the first direction. The central axes of the first rotating shaft 521 and the second rotating shaft 523 extend along the first direction. The first rotating shaft 521 and the second rotating shaft 523 are respectively limited in a rotating shaft groove 1234a of the mounting base 12, so that the bracket 50 can be rotatably installed on the mounting base 12 around the first direction.

[0057] like Figure 5 and Figure 6 As shown, the driving member 72 includes a driving member body 721 and an output shaft 723. The driving member body 721 is supported on the side of the assembly wall 1236 of the mounting seat 12 close to the first mounting portion 121. One end of the output shaft 723 is connected to the driving member body 721, and the other end of the output shaft 723 passes through the connecting hole 1236a along the second direction to be connected to the gear transmission mechanism 74. The output shaft 723 can rotate around its own central axis under the drive of the driving member body 721 to output torque.

[0058] Furthermore, the assembly wall 1236 of the mounting seat 12 is provided with positioning grooves 1236b on the opposite side edges in the first direction, and the driving member body 721 is provided with a positioning member, the shape of which matches the shape of the positioning groove 1236b, and is fixed in the positioning groove 1236b by fasteners such as screws.

[0059] See also Figure 3 and Figure 6 The gear transmission mechanism 74 includes a first bevel gear 741 and a second bevel gear 743, which mesh with each other, thereby connecting the driving member 72 to the bracket 50 and converting the rotation of the output shaft 723 of the driving member 72 about the second direction into the rotation of the bracket 50 about the first direction.

[0060] like Figure 6 and Figure 11 As shown, specifically, a mounting sleeve 7412 is protruding from one end of the first bevel gear 741, and the mounting sleeve 7412 is sleeved on the output shaft 723 of the driving member 72 along the second direction, so that the first bevel gear 741 is matched with the driving member 72 and can rotate around the second direction under the drive of the driving member 72.

[0061] like Figure 6 and Figure 12 As shown, the second bevel gear 743 is provided with two spaced-apart fixing screw columns 7432 on one end face in the axial direction, and the second bevel gear 743 is provided with a connecting screw column 7434 on the other end face in the axial direction. The two fixing screw columns 7432 are inserted into the first rotating shaft 521 of the bracket 50, and the connecting screw column 7434 is inserted into the second rotating shaft 523 of the bracket 50, so that the second bevel gear 743 is fixed between the first rotating shaft 521 and the second rotating shaft 523, and is located at an end portion of the second mounting portion 123 of the mounting seat 12 away from the first mounting portion 121.

[0062] In this way, the second bevel gear 743 is fixed to the bracket 50 and can engage with the first bevel gear 741. The first bevel gear 741 rotates around the second direction under the drive of the driving member 72, and the second bevel gear 743 rotates around the first direction under the drive of the first bevel gear 741, thereby driving the bracket 50 to rotate synchronously around the first direction.

[0063] Please combine Figure 3 、 Figure 6 as well as Figure 13 As shown, in some embodiments, the air supply device 100 also includes an outer cover 90, which has a "V"-shaped structure and is arranged on the mounting seat 12. The outer cover 90 and the mounting seat 12 together form a accommodating space for accommodating the folding drive assembly 70, thereby protecting the folding drive assembly 70 and preventing foreign objects in the external environment from entering the folding drive assembly 70.

[0064] Furthermore, the outer cover 90 is provided with two rotation axis stoppers 92 spaced apart in the first direction. Each rotation axis stopper 92 is inserted into a corresponding rotation axis slot 1234a to stop the first rotation axis 521 and the second rotation axis 523, ensuring that the first rotation axis 521 and the second rotation axis 523 can rotate smoothly within the rotation axis slot 1234a. In a preferred embodiment, the end surface of the rotation axis stopper 92 that contacts the first rotation axis 521 or the second rotation axis 523 is arc-shaped, thereby matching the shape of the outer circumferential surface of the first rotation axis 521 and the second rotation axis 523.

[0065] In some embodiments, the mounting base 12 is provided with a fixing buckle 125, and the outer cover 90 is provided with a snap 94. The fixing buckle 125 and the snap 94 engage with each other to mate the mounting base 12 with the outer cover 90. It will be understood that the number and location of the fixing buckles 125 and the number and location of the snap 94 can be set as needed and are not limited here to meet different mating requirements.

[0066] Furthermore, a mounting base screw column 1232a (such as a screw column 1232a) is protruded on the side of the mounting bottom wall 1232 of the second mounting portion 123 of the mounting base 12 facing away from the assembly wall 1236. Figure 8 As shown), the outer cover 90 is provided with an outer cover screw column 96 protruding from one side, and the outer cover screw column 96 is correspondingly connected to the mounting base screw column 1232a, so that fasteners such as screws can pass through the outer cover screw column 96 and be fixed in the mounting base screw column 1232a, thereby fixing the mounting base 12 and the outer cover 90 to each other.

[0067] As a preferred embodiment, one end edge of the mounting seat 12 is in the shape of an inwardly concave arc, and the first mounting portion 121 of the mounting seat 12 has a matching groove 121a on one end edge facing the main body 10, and the arc-shaped end edge of the mounting seat 12 is inserted into the matching groove 121a, thereby ensuring the overall beauty of the appearance.

[0068] The air supply device 100 is assembled as follows:

[0069] First, the driving member 72 is installed on the assembly wall 1236 of the second mounting portion 123 of the mounting seat 12. The positioning member of the driving member 72 is located in the positioning groove 1236b and fixed by fasteners. The output shaft 723 of the driving member 72 passes through the connecting hole 1236b.

[0070] Then, the mounting sleeve 7412 of the first bevel gear 741 is sleeved on one end of the output shaft 723 passing through the communicating hole 1236 b , and the mounting sleeve 7412 and the output shaft 723 are interference fit, thereby fixing the first bevel gear 741 to the output shaft 723 .

[0071] Afterwards, the second bevel gear 743 is inserted into the bracket mounting portion 52 of the bracket 50, the two fixing screw columns 7432 of the second bevel gear 743 are inserted into the first rotating shaft 521 of the bracket mounting portion 52 and fixed by fasteners, and the connecting screw column 7343 of the second bevel gear 732 is inserted into the second rotating shaft 523 of the bracket mounting portion 52 and fixed by fasteners, so that the second bevel gear 743 is fixed to the bracket mounting portion 52.

[0072] Finally, the fixed bracket 50 and the second bevel gear 732 are placed as a whole into the mounting base 12 on which the driving member 72 and the first bevel gear 741 are installed. The first rotating shaft 521 and the second rotating shaft 523 of the bracket 50 are respectively limited in the two rotating shaft grooves 1234a of the mounting base 12. Then the outer cover 90 is installed on the mounting base 12, and the rotating shaft limiting portion 92 of the outer cover 90 extends into the rotating shaft groove 1234a. The buckle 94 of the outer cover 90 and the fixing buckle 125 of the mounting base 12 are matched with each other, and the outer cover screw column 96 and the mounting base screw column 1232a are fixed to each other through fasteners, and finally the entire assembly step is completed.

[0073] The above-mentioned air supply device 100 drives the gear transmission mechanism 74 through the driving member 72 to drive the air supply device 30 to rotate, thereby realizing automatic switching of the air supply device 30 between the unfolded state and the folded state, eliminating the safety hazards caused by manual operation, and will not fail after long-term use. Moreover, the entire folding drive component 70 adopts a modular assembly design, which has a higher assembly effect.

[0074] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An air supply device, characterized in that: include: A main body (10), wherein one end of the main body (10) is provided with a mounting seat (12); A bracket (50) is rotatably mounted on the mounting seat (12) about a first direction; an air supply device (30), mounted on the bracket (50); and A folding drive assembly (70) is installed at the connection between the bracket (50) and the air supply device (30), and the folding drive assembly (70) is used to drive the bracket (50) to rotate around the first direction, so that the air supply device (30) switches between an unfolded state away from the main body (10) and a folded state close to the main body (10).

2. The air supply device according to claim 1, characterized in that The folding drive assembly (70) comprises: A driving member (72) is fixedly connected to the mounting seat (12); and A gear transmission mechanism (74) is configured to transmission-connect the driving member (72) and the bracket (50), wherein the driving member (72) drives the bracket (50) to rotate about the first direction via the gear transmission mechanism (74).

3. The air supply device according to claim 2, characterized in that: The mounting seat (12) includes an assembly wall (1236), the assembly wall (1236) is provided with a connecting hole (1236a), the driving member (72) includes a driving member body (721) and an output shaft (723), the driving member body (721) is supported on the assembly wall (1236), and the output shaft (723) passes through the connecting hole (1236a) and is connected to the gear transmission mechanism (74).

4. The air supply device according to claim 3, characterized in that: A positioning groove (1236b) is provided on the edge of the assembly wall (1236), and a positioning member (7212) is provided on the driving member body (721), wherein the positioning member (7212) is fixedly connected in the positioning groove (1236b).

5. The air supply device according to claim 2, characterized in that: The gear transmission mechanism (74) comprises: a first bevel gear (741) coupled to the driving member (72), wherein the first bevel gear (741) rotates in a second direction perpendicular to the first direction under the drive of the driving member (72); and The second bevel gear (743) is fixed to the bracket (50) and meshes with the first bevel gear (741). The second bevel gear (743) rotates in the first direction under the drive of the first bevel gear (741).

6. The air supply device according to claim 5, characterized in that: The mounting seat (12) is provided with two rotating shaft grooves (1234a) spaced apart in the first direction, the bracket (50) has a first rotating shaft (521) and a second rotating shaft (523) spaced apart in the first direction, the first rotating shaft (521) and the second rotating shaft (523) are respectively limited in one of the rotating shaft grooves (1234a), and the second bevel gear (743) is fixed between the first rotating shaft (521) and the second rotating shaft (523).

7. The air supply device according to claim 6, characterized in that: The second bevel gear (743) is provided with two spaced-apart fixing screw columns (7432) on one end face in the axial direction, and the second bevel gear (743) is provided with a connecting screw column (7434) on the other end face in the axial direction. The two fixing screw columns (7432) are inserted into the first rotating shaft (521), and the connecting screw column (7434) is inserted into the second rotating shaft (523).

8. The air supply device according to claim 6, characterized in that: The air supply device further comprises an outer cover (90), wherein the outer cover (90) is arranged on the mounting seat (12), and the outer cover (90) and the mounting seat (12) together form an accommodating space for accommodating the folding drive assembly (70).

9. The air supply device according to claim 8, characterized in that: The outer cover (90) is provided with two rotating shaft limiting portions (92) spaced apart in the first direction, and each rotating shaft limiting portion (92) is correspondingly inserted into one of the rotating shaft grooves (1234a) to limit the first rotating shaft (521) and the second rotating shaft (523).

10. The air supply device according to claim 9, characterized in that: The mounting seat (12) is provided with a fixing buckle (125), and the outer cover (90) is provided with a snap buckle (94), and the fixing buckle (125) and the snap buckle (94) are mutually engaged so that the mounting seat (12) and the outer cover (90) are mutually engaged.

11. The air supply device according to claim 10, characterized in that: The mounting seat (12) is provided with a mounting seat screw column (1232a), and the outer cover (90) is provided with an outer cover screw column (96), and the outer cover screw column (96) is correspondingly connected to the mounting seat screw column (1232a).

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