Pressing type quick release locking mechanism, propeller device and application method thereof

Abstract

The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and relates to the technical field of propeller devices. The application discloses a press type quick-release locking mechanism, a propeller device and an application method thereof, and

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of quick-release locking mechanisms, in particular to a press-type quick-release locking mechanism, a propeller device and an application method thereof. BACKGROUND

[0002] The propeller cover of a conventional powered water surfboard is generally installed by screws. Although it can achieve the intended fixed connection function, it still has at least the following two problems:

[0003] 1. During factory assembly, the screw assembly labor cost is increased;

[0004] 2. User use requirements are improved, especially high-level players pursue stronger power performance. In the prior art, the power performance can be enhanced by replacing the propeller cover and changing the shape of the duct to improve the experience of high-level players. Therefore, stable locking and quick disassembly have become increasingly concerned demand points. SUMMARY

[0005] Therefore, the present application provides a press-type quick-release locking mechanism, a propeller device and an application method thereof to solve the technical problems of increased assembly labor cost and difficulty in quick disassembly by screw installation of the cover in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] A press-type quick-release locking mechanism, comprising:

[0008] a locking and limiting structure;

[0009] a disassembly and assembly driving structure, which is slidingly assembled between the locking and limiting structure, and the disassembly and assembly driving structure comprises a quick-release and reverse groove and a locking and pressing protrusion which are fixedly connected;

[0010] a state switching structure, which is assembled between the locking and limiting structure and the disassembly and assembly driving structure, and the state switching structure comprises an elastic extension part and a pressing protrusion part, the pressing protrusion part is fixedly connected to one end of the elastic extension part, and the pressing protrusion part can be elastically bent based on the elastic extension part;

[0011] the pressing protrusion part is correspondingly and adaptively arranged between the quick-release and reverse groove or the locking and pressing protrusion; when the pressing protrusion part and the locking and pressing protrusion correspondingly and adaptively press, the pressing protrusion part is elastically bent and arranged in the locking and limiting structure based on the elastic extension part; when the pressing protrusion part and the quick-release and reverse groove correspondingly and adaptively engage, the pressing protrusion part is elastically unbent, and the pressing protrusion part and the locking and limiting structure are in a non-pressing state.

[0012] A propeller device comprising the pressing quick-release locking mechanism.

[0013] On the basis of the above technical solutions, the application is further described as follows:

[0014] As a further scheme of the application, it further comprises:

[0015] The cover structure has a cover body space inside, and a cylindrical pressing slide is formed at one end of the cover structure and communicates with the cover body space; the pressing slide and the cover body space are connected through the cover structure along the axis of the cylindrical pressing slide.

[0016] The fixed seat structure is a convex table structure, and the outer wall of the fixed seat structure is fixedly connected to the inner wall of the cover structure corresponding to the side of the cover body space away from the pressing slide.

[0017] The propeller shaft structure extends through the pressing slide, the cover body space and the center of the convex table fixed seat structure in sequence.

[0018] The locking limiting structure is fixed between the state switching structure and the fixed seat structure, or the locking limiting structure and the fixed seat structure are integrally formed; and the outer wall of the locking limiting structure is arranged in abutment with the inner wall of the cover body space.

[0019] The elastic extension part of the state switching structure is fixedly connected to the cover structure.

[0020] The disassembly and assembly driving structure is slidingly assembled with the pressing slide, and the disassembly and assembly driving structure is sleeved on the outer side of the propeller shaft structure.

[0021] As a further scheme of the application, the state switching structure further comprises a cover connecting part.

[0022] The cover connecting part is fixedly connected to the inner wall of the cover structure corresponding to the cover body space, and the cover connecting part is fixedly connected to the outer edge of one end of the pressing slide.

[0023] The elastic extension part is provided with a plurality of groups, the plurality of groups of elastic extension parts are uniformly and interval distributed around the axis of the cylindrical pressing slide, and one end of each of the plurality of groups of elastic extension parts is fixedly connected to the cover connecting part.

[0024] The other end side of each of the plurality of groups of elastic extension parts is fixedly connected with the touch pressure protruding part, and the touch pressure protruding part corresponding to each of the plurality of groups of elastic extension parts faces the axis of the cylindrical pressing slide.

[0025] As a further scheme of the present application, the central part of the locking and limiting structure is formed with an assembly channel and a spring mounting cavity in the axial direction of the pressing slide within the shell body space.

[0026] The pressing slide, the assembly channel and the spring mounting cavity are sequentially connected and communicated, and the elastic extension part of the state switching structure extends to the inside of the spring mounting cavity through the assembly channel.

[0027] The paddle shaft structure sequentially extends through the fixed seat body structure, the spring mounting cavity and the assembly channel of the locking and limiting structure, and the pressing slide of the shell structure.

[0028] As a further scheme of the present application, the locking and limiting structure is provided with a chamfered surface at a position corresponding to the assembly channel and the spring mounting cavity.

[0029] As a further scheme of the present application, the locking and limiting structure is provided with a chamfered surface at a position corresponding to the assembly channel and the spring mounting cavity.

[0030] The pressing force direction vector formed between the locking and limiting structure, the pressing protrusion part and the chamfered surface is set to be acute with the pressing opposite direction vector of the pressing part.

[0031] As a further scheme of the present application, the disassembly and assembly driving structure further comprises a pressing part and an extension part.

[0032] The pressing part is slidably arranged in the pressing slide, one end of the extension part is fixedly connected to the pressing part, and the extension part is slidably arranged in the pressing slide, the assembly channel and the spring mounting cavity; one end of the extension part away from the pressing part is sequentially provided with the quick disassembly and assembly reverse recess and the locking and limiting protrusion, and the size of the quick disassembly and assembly reverse recess and the size of the locking and limiting protrusion are respectively matched with the size of the pressing protrusion part of the state switching structure.

[0033] As a further scheme of the present application, it further comprises:

[0034] A supporting pad structure and a spring structure.

[0035] The supporting base plate structure and the spring structure are arranged in the spring mounting cavity, and the supporting base plate structure and the spring structure are arranged on the outer side of the propeller shaft structure; the supporting base plate structure is arranged in sliding fit with the inner wall of the spring mounting cavity, and the supporting base plate structure is arranged to support the locking contact protrusion away from one end of the quick release back-to-normal groove; the spring structure is arranged between the supporting base plate structure and the end face of the fixed seat structure towards the spring mounting cavity.

[0036] When the locking contact protrusion is in contact with the contact protrusion part to form locking, the pressing surface of the pressing part in the locking state is arranged in flush with the end face of the outer edge of the pressing slide.

[0037] When the spring structure is in the initial state, the pressing surface of the pressing part is flush with the end face of the outer edge of the pressing slide.

[0038] A method for applying the propeller device, comprising the following steps:

[0039] The pressing part of the pressing disassembly and assembly driving structure is pressed to synchronously move the locking contact protrusion of the disassembly and assembly driving structure, and the locking contact protrusion is in contact with one side end face of the contact protrusion part of the state switching structure to form a contact action, so that the contact protrusion part is expanded outward based on the elastic action of the state switching structure, and then the other side end face of the contact protrusion part is tightly pressed against the locking limiting structure, the state switching structure is locked by the clamping action formed by the reaction force of the locking limiting structure and the contact pressure of the locking contact protrusion, so as to synchronously complete the locking and fixing of the cover structure.

[0040] In the locking state, the pressing part of the pressing disassembly and assembly driving structure is continuously pressed to continuously move the locking contact protrusion, and the quick release back-to-normal groove of the disassembly and assembly driving structure is correspondingly matched and engaged with the contact protrusion part, so that the contact protrusion part after expansion rebounds to the inside of the quick release back-to-normal groove to reach a natural state or at least a state that the contact protrusion part does not interfere with the locking limiting structure, so as to realize unlocking.

[0041] The present application has the following beneficial effects:

[0042] The device is provided with a dismounting driving structure arranged in a slidable manner, different positions of the dismounting driving structure correspond to touch pressure or decompression state switching structures respectively, so that the state switching structure can be clamped between the locking limiting structure to form a locking effect when being touched, and the state switching structure can be disengaged from the locking limiting structure to realize quick dismounting when being decompressed, so that the quick dismounting function of the state switching structure is effectively realized; and then the transmission and fixation between the cover structure and the state switching structure can realize the quick dismounting function of the propeller cover structure, and the functional practicability and convenience of the whole device are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read. Any modification of the structure, change of the proportion relationship or adjustment of the size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0044] Figure 1 The overall external axial structure schematic diagram of the press-type quick-release locking mechanism and the propeller device in the locked state is provided for the embodiments of the present application.

[0045] Figure 2 The internal axial structure schematic diagram of the press-type quick-release locking mechanism and the propeller device in the locked state is provided for the embodiments of the present application.

[0046] Figure 3 The internal axial structure schematic diagram of the press-type quick-release locking mechanism and the propeller device in the locked state is provided for the embodiments of the present application.

[0047] Figure 4 The internal cross-sectional structure schematic diagram of the press-type quick-release locking mechanism and the propeller device in the locked state is provided for the embodiments of the present application.

[0048] Figure 5 The internal cross-sectional structure schematic diagram of the press-type quick-release locking mechanism and the propeller device in the locked state is provided for the embodiments of the present application. Figure 4 The local structure enlarged schematic diagram of the press-type quick-release locking mechanism and the propeller device in the locked state is provided for the embodiments of the present application.

[0049] Figure 6 The overall external axial structure schematic diagram of the press-type quick-release locking mechanism and the propeller device in the quick-release state is provided for the embodiments of the present application.

[0050] Figure 7The second external axis measurement structure schematic diagram of the press type quick release locking mechanism and propeller device in the quick release state is provided for the embodiment of the application.

[0051] Figure 8 The internal cross section structure schematic diagram of the press type quick release locking mechanism and propeller device in the quick release state is provided for the embodiment of the application.

[0052] In the drawings, the component list represented by each sign is as follows:

[0053] Cover structure 1: cover main body space 11, press slide 12;

[0054] State switching structure 2: cover connecting part 21, elastic extension part 22, touch pressure protruding part 23;

[0055] Fixed seat body structure 3;

[0056] Locking limiting structure 4: assembly channel 41, chamfer surface 411, spring mounting cavity 42:

[0057] Propeller shaft structure 5;

[0058] Disassembly and assembly driving structure 6: press part 61, extension part 62, quick release back to normal recess 63, locking touch pressure protruding part 64;

[0059] Support pad structure 7;

[0060] Spring structure 8. DETAILED DESCRIPTION

[0061] The embodiments of the present application will be described in detail by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. Obviously, the described embodiments are part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0062] The terms such as "upper", "lower", "left", "right", "middle" and the like cited in the specification are only for the convenience of clear description, not to limit the scope of the application which can be implemented. The change or adjustment of the relative relationship without substantial change of the technical content is also regarded as the scope of the application which can be implemented.

[0063] As Figures 1 to 8As shown, this embodiment of the invention provides a propeller device, including a housing structure 1, a propeller shaft structure 5, and a press-type quick-release locking mechanism assembled between the housing structure 1 and the propeller shaft structure 5. The press-type quick-release locking mechanism includes a state switching structure 2, a locking limit structure 4, and a disassembly / assembly drive structure 6. The disassembly / assembly drive structure 6, which can be slidably positioned, corresponds to pressing or depressing the state switching structure 2. This allows the state switching structure 2 to engage with the locking limit structure 4 when pressed, forming a locking effect. Simultaneously, the state switching structure 2 can disengage from the locking limit structure 4 when depressurized, enabling quick disassembly. This effectively realizes the quick disassembly / assembly function of the state switching structure 2. Furthermore, the quick disassembly / assembly function of the propeller housing structure 1 can be achieved through the transmission connection between the housing structure 1 and the state switching structure 2. The specific configuration is as follows:

[0064] Please refer to Figure 4 , Figure 5 and Figure 8 The cover structure 1 has a cover body space 11 inside, and one end of the cover structure 1 is provided with a cylindrical pressing slide 12 that communicates with the cover body space 11. The pressing slide 12 and the cover body space 11 are connected through the cover structure 1 along the axial direction of the cylindrical pressing slide 12, so as to serve as the assembly space of the pressing quick-release locking mechanism through the cover body space 11 and the pressing slide 12 respectively.

[0065] The state switching structure 2 includes a cover connecting part 21, an elastic extension part 22, and a touch protrusion part 23; wherein, the cover connecting part 21 is fixedly connected to the inner wall of the cover structure 1 corresponding to the cover body space 11, and the cover connecting part 21 is fixedly located at one end of the outer edge of the pressing slide 12; the elastic extension part 22 is provided in several groups, and the several groups of elastic extension parts 22 are evenly spaced around the axis of the cylindrical pressing slide 12, and one of the several groups of elastic extension parts 22 Each end is integrally fixed to the cover connecting part 21, so that the several sets of elastic extensions 22 can be elastically bent under pressure based on the cover connecting part 21; the other side of the several sets of elastic extensions 22 is integrally fixed with the pressing protrusion 23, and the pressing protrusion 23 corresponding to the several sets of elastic extensions 22 are all facing the axis of the cylindrical pressing slide 12, so as to adapt to different positions of the slidable disassembly and assembly drive structure 6 by means of the pressing protrusion 23 to achieve the pressing bending or decompression return state.

[0066] Specifically, the connection structure between the cover structure 1 and the cover connection part 21 of the state switching structure 2 can be, but is not limited to, an integral connection structure or a bolt-detachable connection structure.

[0067] Please continue to refer to Figure 4 、 Figure 5 and Figure 8 , the fixed seat structure 3 is a convex table structure, and the outer wall of the convex table fixed seat structure 3 is fixedly connected with the inner wall of the shell structure 1 corresponding to the shell main body space 11 away from the pressing slide 12; The locking and limiting structure 4 is clamped between the state switching structure 2 and the fixed seat structure 3, and the outer wall of the locking and limiting structure 4 is arranged in close contact with the inner wall of the shell main body space 11; Specifically, the central part of the locking and limiting structure 4 is formed with an assembly channel 41 and a spring mounting cavity 42 in the shell main body space 11 along the axis direction of the pressing slide 12, the pressing slide 12, the assembly channel 41 and the spring mounting cavity 42 are sequentially connected and communicated, and the elastic extension part 22 of the state switching structure 2 extends to the inside of the spring mounting cavity 42 through the assembly channel 41, so that the side surface of the touch pressure convex part 23 of the state switching structure 2 can be synchronously extruded to form a line contact with the locking and limiting structure 4 corresponding to the position of the assembly channel 41 and the spring mounting cavity 42 after being touched by the disassembly and assembly driving structure 6, and then the clamping effect is formed by the reaction force of the locking and limiting structure 4 and the touch pressure of the disassembly and assembly driving structure 6 to realize effective locking of the state switching structure 2.

[0068] Preferably, the locking and limiting structure 4 is provided with a chamfer surface 411 at the position corresponding to the assembly channel 41 and the spring mounting cavity 42, so that the other side surface of the touch pressure convex part 23 can be adapted to extrude the chamfer surface 411 to form a face contact effective locking, which significantly improves the locking stability.

[0069] It should be noted that the fixed seat structure 3 and the locking and limiting structure 4 can also be integrally formed based on a specific processing process.

[0070] Please refer to Figures 1 to 8The paddle shaft structure 5 extends through the fixed seat structure 3, the spring mounting cavity 42 and the assembly channel 41 of the locking limiting structure 4, and the pressing slide 12 of the cover structure 1 in sequence. The disassembly and assembly driving structure 6 is arranged on the outer side of the paddle shaft structure 5. Specifically, the disassembly and assembly driving structure 6 comprises a pressing part 61, an extension part 62, a quick-release back concave groove 63 and a locking touch-pressing convex 64. The pressing part 61 is slidingly arranged in the pressing slide 12. One end of the extension part 62 is integrally connected to the pressing part 61, and the extension part 62 is slidingly arranged in the pressing slide 12, the assembly channel 41 and the spring mounting cavity 42. The diameter and width of the pressing part 61 are larger than those of the extension part 62 and the assembly channel 41, so that the outer edge of the assembly channel 41 can block the pressing part 61, thereby effectively preventing the pressing part 61 from sliding into the assembly channel 41, and facilitating operation. The quick-release back concave groove 63 and the locking touch-pressing convex 64 are arranged on the outer side of the end of the extension part 62 away from the pressing part 61 in sequence. The size of the quick-release back concave groove 63 and the size of the locking touch-pressing convex 64 are matched with the size of the touch-pressing convex part 23 of the state switching structure 2, so that the touch-pressing convex part 23 can be pressed by the locking touch-pressing convex 64, thereby making the touch-pressing convex part 23 in a touch-pressing locking state, and the contact between the convexes can significantly improve the pressing force. When the touch-pressing convex part 23 is matched with the quick-release back concave groove 63, the touch-pressing convex part 23 can be in a decompression back state.

[0071] Preferably, the locking touch-pressing convex 64 and the quick-release back concave groove 63 have a transition part arranged in a water drop shape. The curvature radius of the transition part near the locking touch-pressing convex 64 is greater than the curvature radius of the transition part near the quick-release back concave groove 63, so that the mutual switching of the touch-pressing convex part 23 between the quick-release back concave groove 63 and the locking touch-pressing convex 64 is smoother.

[0072] Preferably, when the locking touch-pressing convex 64 and the touch-pressing convex part 23 are in a touch-pressing locking state, the pressing surface of the pressing part 61 in the locking state is flush with the end surface of the outer edge of the pressing slide 12, so that it is easier to judge whether the locking state is reached in the locking state, thereby avoiding the misoperation of unlocking after locking caused by excessive pressing, and effectively improving the functional stability of the structure.

[0073] Further preferably, the extrusion force direction vector formed between the locking contact protrusion 64, the contact protrusion part 23 and the chamfer surface 411 and the opposite direction vector of the pressing of the pressing part 61 correspond to an acute angle, so as to further form an extrusion force in another direction based on the friction direction formed by the sliding of the pressing part 61, thereby effectively improving the locking stability and enhancing the functional practicability.

[0074] As a preferred scheme of the embodiment, please continue to refer to Figure 4 and Figure 8 The spring mounting cavity 42 is further provided with a supporting pad structure 7 and a spring structure 8, which are sleeved on the outer side of the propeller shaft structure 5, wherein the supporting pad structure 7 is slidingly arranged between the spring mounting cavity 42 and the spring structure 8, and the supporting pad structure 7 is arranged on the end of the locking contact protrusion 64 away from the quick-release back groove 63; the spring structure 8 is arranged between the supporting pad structure 7 and the end face of the fixed seat structure 3 towards the spring mounting cavity 42, so that the supporting pad structure 7 can apply a counter force to the locking contact protrusion 64 by the elastic support of the spring structure 8, thereby reducing the possibility of unlocking caused by the displacement of the locking contact protrusion 64, and effectively improving the locking stability in the vibration state.

[0075] More preferably, when the spring structure 8 is in the initial state, the pressing surface of the pressing part 61 is flush with the end face of the outer edge of the pressing slide 12, so that the locking state can be more easily determined and maintained in the flush state, and the locking state stability is further improved.

[0076] The embodiment of the application further provides an application method of the propeller device, which specifically includes the following steps:

[0077] The pressing part 61 of the pressing and disassembling driving structure 6 is pressed to synchronously move the locking contact protrusion 64 of the disassembling driving structure 6, and the contact protrusion part 23 of the state switching structure 2 is outwardly expanded based on the elastic action of the state switching structure 2 by the contact action between the locking contact protrusion 64 and the one side end face of the contact protrusion part 23, so that the other side end face of the contact protrusion part 23 tightly presses the locking limiting structure 4, and the state switching structure 2 is locked by the clamping action formed by the counter force of the locking limiting structure 4 and the contact pressure of the locking contact protrusion 64, thereby synchronously completing the locking and fixing of the cover structure 1.

[0078] In the locked state, continue to press the pressing part 61 of the disassembly and assembly driving structure 6 to make the locking pressing protrusion 64 continue to move, the quick disassembly and assembly reverse groove 63 of the disassembly and assembly driving structure 6 and the pressing protrusion part 23 correspond to adapt to engage, because the quick disassembly and assembly reverse groove 63 cannot apply enough extrusion force to the pressing protrusion part 23, so that the pressing protrusion part 23 after the strutting rebounds to the inside of the quick disassembly and assembly reverse groove 63 to reach the natural state or at least to the state that the pressing protrusion part 23 does not interfere with the locking limiting structure 4, thereby realizing unlocking, that is, the quick disassembly and assembly driving structure 6 can be disassembled and assembled.

[0079] Although the present application has been described in detail with general description and specific embodiments above, some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the present application, all belong to the scope of protection required by the present application.

Claims

1. A propeller device, characterized in that, Including a press-type quick-release locking mechanism; The press-type quick-release locking mechanism includes: Locking and limiting structure; The disassembly and assembly drive structure is slidably assembled with the locking and limiting structure, and the disassembly and assembly drive structure includes a quick-release return groove and a locking contact protrusion that are fixedly connected to each other. A state switching structure is assembled between the locking limiting structure and the disassembly and assembly driving structure. The state switching structure includes an elastic extension and a pressure protrusion. The pressure protrusion is fixed to one end of the elastic extension and can be elastically bent based on the elastic extension. The pressure protrusions are respectively matched and adapted to the quick-release return groove or the locking pressure protrusion; when the pressure protrusions are matched and adapted to the locking pressure protrusions, the pressure protrusions are pressed against the locking limiting structure based on the elastic extension; when the pressure protrusions are matched and engaged with the quick-release return grooves, the pressure protrusions release their elastic bending, and the pressure protrusions and the locking limiting structure are in a non-pressing state. The press-type quick-release locking mechanism further includes: The cover structure has an internal main cover space, and one end of the cover structure has a cylindrical pressing slide that communicates with the main cover space; the pressing slide and the main cover space are connected through the cover structure along the axial direction of the cylindrical pressing slide. The fixed base structure is a convex platform structure, and the outer wall of the fixed base structure is fixedly connected to the inner wall of the cover structure on the side of the main space of the cover away from the pressing slide. The propeller shaft structure extends sequentially through the center positions of the pressing slide, the main body space of the cover, and the fixed base structure. The locking and limiting structure is fixed between the state switching structure and the fixed base structure, or the locking and limiting structure and the fixed base structure are integrally formed; and the outer wall of the locking and limiting structure is fitted to the inner wall of the main body space of the cover. The elastic extension of the state switching structure is fixedly connected to the cover structure. The disassembly and assembly drive structure is slidably assembled with the pressing slide, and the disassembly and assembly drive structure is sleeved on the outer side of the propeller shaft structure; The central part of the locking and limiting structure forms an assembly channel and a spring mounting cavity respectively within the main body space of the cover along the axial direction of the pressing slide. The locking and limiting structure has a chamfered surface at the position corresponding to the connection between the assembly channel and the spring mounting cavity; The disassembly / assembly drive structure includes a pressing part; The locking contact protrusion and the quick-release return groove have a transition portion that is connected in a teardrop-shaped arc. The radius of curvature of the transition portion on the side closer to the locking contact protrusion is greater than the radius of curvature on the side closer to the quick-release return groove. The direction vector of the pressing force formed between the locking pressure protrusion, the pressure protrusion portion, and the chamfered surface is set at an acute angle to the opposite direction vector of the pressing portion.

2. The propeller device according to claim 1, characterized in that, The state switching structure also includes a cover connection part; The cover connecting part is fixedly connected to the inner wall of the cover structure corresponding to the main body space of the cover, and the cover connecting part is fixedly connected to one end of the outer edge of the pressing slide. The elastic extension is provided in several groups, and the several groups of elastic extensions are evenly distributed around the axis of the cylindrical pressing slide, and one end of each of the several groups of elastic extensions is fixed to the cover connecting part. The other side of each of the several sets of elastic extensions is fixed with the pressure protrusion, and the pressure protrusions corresponding to the several sets of elastic extensions are all oriented toward the axis of the cylindrical pressing slide.

3. The propeller device according to claim 2, characterized in that, The pressing slide, the assembly channel, and the spring mounting cavity are sequentially connected and connected, and the elastic extension of the state switching structure extends into the spring mounting cavity through the assembly channel; The propeller shaft structure extends sequentially through the fixed base structure, the spring mounting cavity and assembly channel of the locking and limiting structure, and the pressing slide of the cover structure.

4. The propeller device according to claim 3, characterized in that, The disassembly / assembly drive structure also includes an extension; The pressing part is slidably disposed on the pressing slide, one end of the extension is fixedly connected to the pressing part, and the extension is slidably disposed on the pressing slide, the assembly channel and the spring mounting cavity; the outer side of the end of the extension away from the pressing part is provided with the quick-release return groove and the locking contact protrusion in sequence, and the size of the quick-release return groove and the size of the locking contact protrusion are respectively adapted to the size of the contact protrusion of the state switching structure.

5. The propeller device according to claim 3, characterized in that, Also includes: Support plate structure and spring structure; Both the support pad structure and the spring structure are assembled inside the spring mounting cavity, and the support pad structure and the spring structure are sleeved on the outer side of the propeller shaft structure; the support pad structure is slidably assembled with the inner wall of the spring mounting cavity, and the support pad structure supports the end of the locking contact protrusion away from the quick-release return groove; the spring structure is assembled between the support pad structure and the end face of the fixed base structure facing the spring mounting cavity; When the locking contact protrusion and the contact protrusion form a lock, the pressing surface of the pressing part in the locked state is flush with the end face of the outer edge of the pressing slide. When the spring structure is in its initial state, the pressing surface of the pressing part is flush with the end face of the outer edge of the pressing slide.

6. A method for using a propeller device as described in any one of claims 1-5, characterized in that, Includes the following steps: Pressing the pressing part of the disassembly and assembly drive structure causes the locking contact protrusion of the disassembly and assembly drive structure to move synchronously. The locking contact protrusion and the contact protrusion of the state switching structure form a contact pressure action, causing the contact protrusion to be pushed outward based on the elasticity of the state switching structure itself. This causes the other end face of the contact protrusion to press tightly against the locking limit structure. The state switching structure is locked by the clamping action formed by the reaction force of the locking limit structure and the contact pressure of the locking contact protrusion, thereby simultaneously completing the locking and fixing of the cover structure. In the locked state, continue pressing the pressing part of the disassembly and assembly drive structure to make the locking contact protrusion continue to move. The quick-release return groove of the disassembly and assembly drive structure and the contact protrusion should be matched and engaged. Since the quick-release return groove cannot apply enough squeezing force to the contact protrusion, the opened contact protrusion will spring back into the quick-release return groove to a natural state or at least to a state where the contact protrusion does not interfere with the locking limit structure, thereby unlocking.

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