Angle adjustment structure and hair dryer
By designing a detachable angle adjustment structure and utilizing the rotational connection between the first and second mating parts and the support hole design, the problems of difficult assembly and complex maintenance of the fan head angle adjustment structure are solved, achieving a more efficient assembly and maintenance process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2021-01-26
- Publication Date
- 2026-07-24
AI Technical Summary
The existing fan head angle adjustment structure suffers from problems such as high assembly difficulty, low assembly efficiency, and complex maintenance and replacement.
An angle adjustment structure is adopted, in which the first and second mating parts are rotatably connected. The first mating part is detachably connected to the machine head, and the second mating part is detachably connected to the bracket. The relative rotation angle is controlled by a motor. Combined with the design of support holes and guide grooves, the assembly process is simplified and the stress condition is improved.
It improves assembly efficiency, simplifies maintenance and replacement processes, reduces assembly difficulty, improves the stress distribution on parts, and prevents parts from bending.
Smart Images
Figure CN119244578B_ABST
Abstract
Description
[0001] This application is a divisional application of Chinese invention patent application filed by the applicant on January 26, 2021, entitled "Angle Adjustment Structure and Blowing Device", application number 202110105847.6. Technical Field
[0002] This invention relates to the field of blower technology, and in particular to an angle adjustment structure and a blower. Background Technology
[0003] With the continuous development of technology, the types of equipment used for cooling are constantly increasing. However, among household appliances, fans, as appliances that cool and increase indoor air circulation, still have advantages such as low price and ease of use, and there is still a large demand for them.
[0004] A fan typically consists of a body and a fan head. The fan head is mounted on the body via a fan head angle adjustment mechanism. However, existing fan head angle adjustment mechanisms suffer from structural defects, resulting in problems such as difficult assembly, low assembly efficiency, and complex maintenance and replacement. Summary of the Invention
[0005] Based on this, the present invention aims to overcome the shortcomings of existing fan head angle adjustment structures, which are difficult to assemble, maintain and replace, and are complex, and to provide an angle adjustment structure and blowing device that are easy to assemble, maintain and replace.
[0006] The technical solution is as follows:
[0007] An angle adjustment structure includes a first mating component and a second mating component. The first mating component has a first rotating connection hole, and the second mating component passes through the first rotating connection hole. The first mating component and the second mating component are rotatably connected. The relative rotation angle between the first mating component and the second mating component is adjustable. The first mating component is detachably connected to the machine head, and the second mating component is detachably connected to the bracket.
[0008] The bracket includes a first part with a support hole, and one end of the second mating member extends into the support hole.
[0009] In one embodiment, the inner wall of the support hole is provided with a guide groove, and the second mating part is provided with a protrusion that matches the guide groove.
[0010] In one embodiment, the inner wall of the first rotating connecting hole is provided with a relief groove, and the second mating member is provided with a protrusion corresponding to the relief groove, the protrusion being able to pass through the first mating member along the relief groove.
[0011] In one embodiment, the first mating part is provided with a corner limiting part, and the first split part is provided with an angle limiting groove on the side near the machine head. The corner limiting part is used to extend into the angle limiting groove and slide along the angle limiting groove. The angle that the corner limiting part can rotate along the angle limiting groove is less than 360°.
[0012] In one embodiment, the first rotating connecting hole includes a first hole segment and a second hole segment arranged sequentially along the direction away from the machine head. The diameter of the first hole segment is larger than the diameter of the second hole segment. The second mating member includes a mating end and a stop end. The mating end passes through the second hole segment, and the outer diameter of the stop end is larger than the diameter of the second hole segment.
[0013] In one embodiment, the outer diameter of the stop end is smaller than the diameter of the first hole section and passes through the first hole section.
[0014] In one embodiment, one end of the second mating member is provided with an outward flange, the outward flange is located outside the first mating member, the outward flange is provided with a fastening hole, and the angle adjustment structure further includes a stud, the stud passing through the fastening hole and abutting against the first mating member.
[0015] In one embodiment, the mating end includes a protrusion located at one end of the mating end away from the stop end, the protrusion being used to extend out of the first rotatable connection hole and into the support hole.
[0016] In one embodiment, a bearing is provided between the first mating member and the second mating member, and the bearing is sleeved on the second mating member.
[0017] In one embodiment, the relative rotation angle between the first mating member and the second mating member is controlled by a motor.
[0018] A blower device includes a head, a bracket, and the aforementioned angle adjustment structure. The head includes a duct component for forming an air duct. A first mating component is detachably connected to the head, and a second mating component is detachably connected to the bracket.
[0019] The bracket includes a first part, on which the support hole is provided, and one end of the second mating member extends into the support hole.
[0020] In one embodiment, the bracket includes a second part, and a first mounting part and a second mounting part are respectively provided on both sides of the machine head;
[0021] The first split body and the first mounting part are interconnected via the angle adjustment structure; the first mounting part is detachably connected to the first mating component; and the first split body is detachably connected to the second mating component; and / or
[0022] The second split body and the second mounting part are interconnected through the angle adjustment structure. The second mounting part is detachably connected to the first mating part, and the second split body is detachably connected to the second mating part.
[0023] In one embodiment, the first split body and the first mounting part are interconnected by the angle adjustment structure, the support hole is provided in the first split body, and one end of the second mating member extends into the support hole and is detachably connected to the first split body.
[0024] In one embodiment, the device further includes a first fixing member and a second fixing member. The first split body and the first mounting part are interconnected by the angle adjustment structure. The first mating member has a first through hole, and the first mounting part has a first threaded hole. The first fixing member passes through the first through hole and is threadedly engaged with the first threaded hole. The first split body has a second through hole, and the second mating member has a second threaded hole. The second fixing member passes through the second through hole and is threadedly engaged with the second threaded hole.
[0025] The aforementioned angle adjustment structure, with its detachable connection between the first mating component and the machine head, and its detachable connection between the second mating component and the support, and its adjustable relative rotation angle, allows for the adjustment of the angle between the machine head and the support after assembly. Furthermore, the assembly of the first and second mating components can be performed independently of the machine head and support, simplifying the assembly process. Compared to traditional equipment where angle adjustment components are directly mounted on the machine head and support before assembling, this angle adjustment structure only requires the first and second mating components to be assembled separately with the machine head and support. This simplifies assembly, improves efficiency, and facilitates maintenance and replacement in case of malfunction.
[0026] Furthermore, by inserting the second mating part into the support hole, the inner wall of the support hole can contact the second mating part and assist the second mating part in bearing the pressure of the machine head, thereby improving the stress condition of the second mating part and making it less prone to bending. Attached Figure Description
[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.
[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0029] Figure 1 This is a partial structural schematic diagram of the blower device described in an embodiment of the present invention;
[0030] Figure 2 for Figure 1 An explosion diagram;
[0031] Figure 3 This is a perspective view of the first mating component according to an embodiment of the present invention;
[0032] Figure 4 This is a perspective view of the second mating component according to an embodiment of the present invention;
[0033] Figure 5 This is a longitudinal sectional view of the angle adjustment structure described in an embodiment of the present invention;
[0034] Figure 6 This is a cross-sectional view of the first mating component according to an embodiment of the present invention;
[0035] Figure 7 This is a partial structural diagram of the machine head described in an embodiment of the present invention;
[0036] Figure 8 This is a partial structural diagram of the bracket described in an embodiment of the present invention;
[0037] Figure 9 This is a perspective view of the angle adjustment structure described in an embodiment of the present invention;
[0038] Figure 10 for Figure 8 Enlarged view of point A in the middle;
[0039] Figure 11 This is a partial structural diagram of the first component described in an embodiment of the present invention;
[0040] Figure 12 This is a side view of the first mating component according to an embodiment of the present invention.
[0041] Explanation of reference numerals in the attached figures:
[0042] 100. First mating part; 101. First rotating connecting hole; 101a. First hole section; 101b. Second hole section; 103. First through hole; 130. Corner limiting part; 200. Second mating part; 202. Second threaded hole; 210. Butt end; 220. Stop end; 230. Protrusion; 240. Extension; 300. Head; 310. First mounting part; 311. First threaded hole; 320. Air duct component; 321. Air duct; 400. Bracket; 410. First split part; 411. Support hole; 412. Angle limiting groove; 413. Guide groove; 414. Second through hole; 420. Second split part. Detailed Implementation
[0043] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0044] like Figure 1 and Figure 2 As shown in the figure, an embodiment of this application discloses a blower device. Optionally, the blower device can be a fan, a circulating fan, or other device capable of blowing air.
[0045] The blower includes a head 300, a bracket 400, and an angle adjustment structure. The head 300 is detachably mounted on the bracket 400 via the angle adjustment structure. The angle adjustment structure includes a first mating part 100 and a second mating part 200. The first mating part 100 and the second mating part 200 are rotatably connected. The first mating part 100 is detachably connected to the head 300, and the second mating part 200 is detachably connected to the bracket 400.
[0046] Specifically, such as Figures 3 to 5 As shown, the bracket 400 includes a first part 410 and a second part 420. The first part 410 has a support hole 411, and the first mating member 100 has a first rotating connection hole 101. The second mating member 200 passes through the first rotating connection hole 101, and one end of the second mating member 200 extends into the support hole 411 and is detachably connected to the first part 410. The relative rotation angle between the first mating member 100 and the second mating member 200 is controlled by a motor, which can be a stepper motor, adjusting a certain rotation angle each time.
[0047] The aforementioned angle adjustment structure, since the first mating component 100 is detachably connected to the machine head 300 and the second mating component 200 is detachably connected to the bracket 400, and the relative rotation angle of the first mating component 100 and the second mating component 200 is adjustable, can be used to adjust the angle of the machine head 300 relative to the bracket 400 after the first mating component 100 and the second mating component 200 are assembled with the machine head 300 and the bracket 400. Furthermore, the assembly of the first mating component 100 and the second mating component 200 can be performed independently of the machine head 300 and the bracket 400, simplifying the assembly process. Compared to traditional equipment where angle adjustment components are directly mounted on the machine head 300 and the bracket 400, and then the machine head 300 and the bracket 400 are assembled, the aforementioned angle adjustment structure only requires the first mating component 100 and the second mating component 200 to be assembled with the machine head 300 and the bracket 400 separately. This simplifies the assembly process, improves assembly efficiency, and facilitates maintenance and replacement in case of malfunction.
[0048] Furthermore, by extending the second mating part 200 into the support hole 411, the inner wall of the support hole 411 can contact the second mating part 200 and assist the second mating part 200 in bearing the pressure of the machine head 300, thereby improving the stress condition of the second mating part 200 and making it less prone to bending.
[0049] Optionally, the relative rotation angle adjustment between the first mating part 100 and the second mating part 200 is to adjust the pitch angle of the machine head 300 relative to the support 400.
[0050] Optionally, a bearing is provided between the first mating part 100 and the second mating part 200, with the bearing sleeved on the second mating part 200, to reduce the frictional force when the first mating part 100 and the second mating part 200 rotate relative to each other, thereby reducing wear.
[0051] Specifically, such as Figure 4 , Figure 5 and Figure 6 As shown, the first rotating connection hole 101 includes a first hole section 101a and a second hole section 101b arranged sequentially in a direction away from the machine head 300. The diameter of the first hole section 101a is larger than the diameter of the second hole section 101b. The second mating member 200 includes a docking end 210 and a stop end 220. The docking end 210 passes through the second hole section 101b, and the outer diameter of the stop end 220 is larger than the diameter of the second hole section 101b. The end of the first mating member 100 with the first hole section 101a is detachably connected to the machine head 300, and the docking end 210 is connected to the bracket 400.
[0052] In another embodiment, one end of the second mating member 200 is provided with an outward flange, which is located outside the first mating member 100. The outward flange is provided with a fastening hole, and the stud is threaded into the fastening hole. The part of the stud that passes through the fastening hole can abut against the first mating member 100. At this time, by tightening the stud, the stud can be pressed against the first mating member 100, so that the first mating member 100 and the second mating member 200 remain relatively fixed. By loosening the stud, the stud can be separated from the first mating member 100 or no longer pressed. At this time, the first mating member 100 and the second mating member 200 can rotate relative to each other, and the relative rotation angle of the first mating member 100 and the second mating member 200 can be adjusted.
[0053] In one embodiment, such as Figure 2 and Figure 7 As shown, the bracket 400 includes a first part 410 and a second part 420. The machine head 300 has a first mounting part 310 and a second mounting part on both sides respectively. The first part 410 and the first mounting part 310 are connected to each other through an angle adjustment structure, and / or the second part 420 and the second mounting part are connected to each other through an angle adjustment structure.
[0054] Specifically, in one embodiment, the first split body 410 and the first mounting part 310, and the second split body 420 and the second mounting part are respectively connected to each other through an angle adjustment structure. The first mounting part 310 is detachably connected to the first mating part 100, the first split body 410 is detachably connected to the second mating part 200, the second mounting part is detachably connected to the first mating part 100, and the second split body 420 is detachably connected to the second mating part 200. As a preferred embodiment, the first split body 410 and the second split body 420 are spaced apart on both sides of the machine head 300.
[0055] The first component 410 and the second component 420 jointly support the nose cone 300, sharing its weight. The center of gravity of the nose cone 300 can be located between the first component 410 and the second component 420, thus maintaining better stability. The pitch angle of the nose cone 300 can be adjusted using the first mating part 100 and the second mating part 200. It can be understood that the center of gravity of the nose cone 300 is not limited to being between the first component 410 and the second component 420; it can be set at different positions according to actual conditions to maintain the stability of the nose cone 300.
[0056] Optionally, such as Figure 7 As shown, the head unit 300 includes a duct component 320 for forming an air duct 321. A first mounting part 310 and a second mounting part are respectively disposed on both sides of the duct component 320, so that the air outlet direction of the head unit 300 can be adjusted.
[0057] In other embodiments, the first split 410 is detachably connected to the first mating member 100, the first mounting part 310 is detachably connected to the second mating member 200, and / or the second split 420 is detachably connected to the first mating member 100, and the second mounting part is detachably connected to the second mating member 200.
[0058] In other embodiments, the support 400 may also be a single-rod support 400, with the head 300 mounted on the support 400. The head 300 and the support 400 are connected by a first mating member 100 and a second mating member 200 to adjust the pitch angle of the head 300.
[0059] In one embodiment, such as Figures 9 to 12 As shown, the first mating component 100 has a corner limiting part 130 on the side near the first split part 410 or the second split part 420. Both the first split part 410 and the second split part 420 have an angle limiting groove 412 on the side near the machine head 300. The corner limiting part 130 is used to extend into the angle limiting groove 412 and slide along it. The angle at which the corner limiting part 130 can rotate along the angle limiting groove 412 is less than 360°. At this time, the angle of rotation of the machine head 300 relative to the bracket 400 can be controlled by the cooperation of the corner limiting part 130 and the angle limiting groove 412, preventing the machine head 300 from rotating more than one revolution relative to the bracket 400, thus avoiding damage due to excessive twisting of the wiring. In a preferred embodiment, the angle limiting groove 412 is arranged around the support hole 411.
[0060] Optionally, the angle limiting groove 412 has a first position. When the angle limiting part 130 rotates to the first position, the air outlet of the head 300 is oriented horizontally. In addition, the angle limiting groove 412 also has a second position and a third position, which are located on both sides of the first position. When the angle limiting part 130 rotates to the second position, the air outlet of the head 300 is oriented diagonally downward. When the angle limiting part 130 rotates to the third position, the air outlet of the head 300 is oriented diagonally upward. The second position and the third position are located at the two ends of the angle limiting groove 412, respectively.
[0061] Optionally, the angle limiting part 130 can rotate along the angle limiting groove 412 by an angle greater than 160° and less than 200°. This can prevent excessive twisting of the wires caused by excessive rotation of the machine head 300 relative to the support 400, while still meeting the needs of adjusting the pitch angle of the machine head 300. Specifically, the angle limiting part 130 can rotate along the angle limiting groove 412 by an angle of 180°.
[0062] In one embodiment, such as Figures 9 to 11As shown, a guide groove 413 is provided on the inner wall of the support hole 411, and a protrusion 230 matching the guide groove 413 is provided on the second mating part 200. Through the cooperation of the guide groove 413 and the protrusion 230, the second mating part 200 can be guided to extend into the support hole 411, ensuring that the second mating part 200 extends into the support hole 411 in the correct posture, preventing incorrect assembly of the second mating part 200 and the first split part 410, and facilitating assembly.
[0063] Optionally, there are two guide grooves 413, which are respectively located on opposite side walls inside the support hole 411. This results in a better guiding effect.
[0064] Optionally, such as Figures 8 to 12 As shown, the inner wall of the first rotating connection hole 101 is provided with a clearance groove, which is correspondingly provided with the protrusion 230. The docking end 210 includes a protrusion 240, which is located at the end of the docking end 210 away from the stop end 220. The protrusion 240 is used to extend out of the first rotating connection hole 101 and into the support hole 411. The protrusion 230 is provided on the outer surface of the protrusion 240.
[0065] During the assembly process of the first mating part 100 and the second mating part 200, the second mating part 200 can be passed through the first rotating connection hole 101 first, wherein the protrusion 230 passes through the first mating part 100 along the relief groove, so that the protrusion 240 passes through the first rotating connection hole 101 and is located outside the first mating part 100. Then, the first mating part 100 and the second mating part 100 can be rotated relative to each other, so that the protrusion 230 and the relief groove are misaligned in the circumferential direction and abut against one end face of the first mating part 100. Subsequently, the protrusion 240 can continue to extend into the support hole 411, allowing the protrusion 230 to engage with the guide groove 413, and connecting the first part 410 or the second part 420 with the second mating member 200. At this point, the assembly of the first mating member 100 and the second mating member 200, as well as the assembly of the second mating member 200 with the first part 410 or the second part 420, are completed. Simultaneously, the first mating member 100 and the second mating member 200 can still rotate relative to each other. Because the second mating member 200 abuts against the first mating member 100 through the protrusion 230, it prevents the first mating member 100 and the second mating member 200 from moving relative to each other axially and separating.
[0066] In other embodiments, only the first component 410 and the head 300 may be interconnected via an angle adjustment structure, while the second component 420 and the head 300 may be connected only by hinges or through bearings, with the pitch angle of the head 300 adjusted using the angle adjustment structure between the first component 410 and the head 300. In still other embodiments, only the second component 420 and the head 300 may be interconnected via an angle adjustment structure, while the first component 410 and the head 300 may be connected only by hinges or through bearings, with the pitch angle of the head 300 adjusted using the angle adjustment structure between the second component 420 and the head 300.
[0067] In one embodiment, such as Figure 7 , Figure 9 and Figure 11 As shown, the aforementioned blower device also includes a first fixing member and a second fixing member. The first mating member 100 has a first through hole 103, and the first mounting portion 310 has a first threaded hole 311. The first fixing member passes through the first through hole 103 and is threadedly engaged with the first threaded hole 311. The first split body 410 or the second split body 420 has a second through hole 414, and the second mating member 200 has a second threaded hole 202. The second fixing member passes through the second through hole 414 and is threadedly engaged with the second threaded hole 202. Through the threaded connection of the first and second fixing members, a detachable connection can be achieved between the first mating member 100 and the first mounting portion 310, and between the first split body 410 or the second split body 420 and the second mating portion. Assembly and disassembly are simple, the fixing stability is good, and the cost is low.
[0068] Optionally, such as Figure 10 and Figure 11 As shown, the second through hole 414 is provided on the bottom surface of the support hole 411, and the second threaded hole 202 is provided on the end face of the second mating part 200 away from the machine head 300. This makes it easier for the second fixing part to pass through the second through hole 414 from the side of the first split 410 or the second split 420 away from the machine head 300 and to be threadedly engaged with the second mating part 200, making the operation simpler.
[0069] Optionally, such as Figure 3 , Figure 7 and Figure 9 As shown, there are multiple first through holes 103. The first through holes 103 are spaced apart on the first mating member 100 along the circumferential direction of the first rotating connection hole 101. The number of first mounting parts 310 corresponds to the number of first through holes 103.
[0070] Optionally, the first and second fasteners can be bolts, screws, etc.
[0071] In other embodiments, the second mating member 200 includes a first end and a second end. The first end passes through a first rotating connecting portion and is rotatably mated with the first mating member 100. The second end is inclined relative to the first end. The first split body 410 or the second split body 420 is provided with a functional hole for insertion into the second end. The functional hole is arranged in a downward inclined direction. The second end may be provided with a first locking portion on the outside and a second locking portion in the functional hole. The first locking portion and the second locking portion are a concave-convex mating structure. After the second end is inserted into the functional hole, the first end is arranged in a horizontal direction. At this time, the second mating member 200 and the first split body 410 or the second split body 420 can be detachably connected by inserting or withdrawing the second end into the functional hole.
[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.
[0073] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.
[0074] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0075] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0076] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0077] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0078] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening 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 possible implementation.
Claims
1. An angle adjustment structure, characterized in that, It includes a first mating component and a second mating component. The first mating component is provided with a first rotating connection hole, and the second mating component passes through the first rotating connection hole. The first mating component and the second mating component are rotatably connected. The relative rotation angle between the first mating component and the second mating component is adjustable. The first mating component is used for detachable connection with the machine head, and the second mating component is used for detachable connection with the bracket. The first rotating connecting hole includes a first hole segment and a second hole segment. The diameter of the first hole segment is larger than the diameter of the second hole segment. The second mating component includes a mating end and a stop end. The mating end passes through the second hole segment. The outer diameter of the stop end is larger than the diameter of the second hole segment. The bracket includes a first split body. The first split body is provided with a support hole. One end of the second mating component extends into the support hole.
2. The angle adjustment structure according to claim 1, characterized in that, The inner wall of the support hole is provided with a guide groove, and the second mating part is provided with a protrusion that matches the guide groove.
3. The angle adjustment structure according to claim 1, characterized in that, The inner wall of the first rotating connection hole is provided with a relief groove, and the second mating part is provided with a protrusion corresponding to the relief groove. The protrusion can pass through the first mating part along the relief groove.
4. The angle adjustment structure according to claim 1, characterized in that, The first mating part is provided with a corner limiting part, and the first split part is provided with an angle limiting groove on the side near the machine head. The corner limiting part is used to extend into the angle limiting groove and slide along the angle limiting groove. The angle that the corner limiting part can rotate along the angle limiting groove is less than 360°.
5. The angle adjustment structure according to claim 1, characterized in that, The first hole section and the second hole section are arranged sequentially in a direction away from the machine head.
6. The angle adjustment structure according to claim 5, characterized in that, The outer diameter of the stop end is smaller than the diameter of the first hole section and it passes through the first hole section.
7. The angle adjustment structure according to claim 5, characterized in that, One end of the second mating part is provided with an outward flange, which is located outside the first mating part. The outward flange is provided with a fastening hole. The angle adjustment structure also includes a stud, which passes through the fastening hole and abuts against the first mating part.
8. The angle adjustment structure according to claim 5, characterized in that, The docking end includes a protrusion located at the end of the docking end away from the stop end, and the protrusion is used to extend out of the first rotating connection hole and into the support hole.
9. The angle adjustment structure according to claim 1, characterized in that, A bearing is provided between the first mating component and the second mating component, and the bearing is sleeved on the second mating component.
10. The angle adjustment structure according to any one of claims 1-9, characterized in that, The relative rotation angle between the first mating component and the second mating component is controlled by a motor.
11. A blower device, characterized in that, The device includes a head unit, a support frame, and an angle adjustment structure as described in any one of claims 1-10. The head unit includes a duct component for forming an air duct. The first mating component is detachably connected to the head unit, and the second mating component is detachably connected to the support frame. The bracket includes a first part, on which the support hole is provided, and one end of the second mating member extends into the support hole.
12. The blower according to claim 11, characterized in that, The bracket includes a second part, and a first mounting part and a second mounting part are respectively provided on both sides of the machine head; The first split body and the first mounting part are interconnected via the angle adjustment structure; the first mounting part is detachably connected to the first mating component; and the first split body is detachably connected to the second mating component; and / or The second split body and the second mounting part are interconnected through the angle adjustment structure. The second mounting part is detachably connected to the first mating part, and the second split body is detachably connected to the second mating part.
13. The blower according to claim 12, characterized in that, The first split part and the first mounting part are interconnected through the angle adjustment structure. The support hole is provided in the first split part, and one end of the second mating part extends into the support hole and is detachably connected to the first split part.
14. The blower according to claim 12, characterized in that, It also includes a first fixing member and a second fixing member. The first split body and the first mounting part are connected to each other through the angle adjustment structure. The first mating member is provided with a first through hole. The first mounting part is provided with a first threaded hole. The first fixing member passes through the first through hole and is threadedly engaged with the first threaded hole. The first split body is provided with a second through hole. The second mating member is provided with a second threaded hole. The second fixing member passes through the second through hole and is threadedly engaged with the second threaded hole.