Multi-functional boat paddle with quickly replaceable blade

Abstract

This application discloses a multi-functional boat propeller with quick blade replacement, belonging to the field of boat propeller technology. It includes a propeller shaft, with a mounting head fixedly connected to the lower end of the shaft. Two elastic clips are symmetrically connected to the bottom of the mounting head, and a propeller blade is clamped between the two elastic clips. A locking collar is sleeved on the outside of the mounting head, and both elastic clips have external threads on their outer walls. This application utilizes two symmetrically connected elastic clips at the bottom of the mounting head. Because the elastic clips have a certain elastic deformation capability, the propeller blade can be clamped and placed between the two elastic clips. Since the external threads on the outer walls of the elastic clips are compatible with the internal threads on the inner walls of the locking collar, the locking collar can be rotated to engage the threads on the outer walls of the elastic clips, thereby clamping and fixing the elastic clips. This allows for the fixing or removal of the propeller blade, enabling users to quickly replace the propeller blade according to the characteristics of the water area.

Description

Technical Field

[0001] This application relates to the field of propeller technology, and in particular to a multi-functional propeller with quick-change blades. Background Technology

[0002] Oars are one of the most important tools for rowing. Oars mimic the pectoral and pelvic fins of a fish, using the lever principle to propel the boat forward with a gentle, rhythmic motion. The upper part of the oar is a round shaft for easy gripping, called the oar shaft, while the lower part is a plate-like blade used to propel the boat forward, utilizing Newton's third law of motion—the reaction force of the water waves.

[0003] Traditional oars use a fixed blade structure, with the blade and shaft molded as one piece. This structure is simple and has low manufacturing cost, but it cannot adapt to different waters (e.g., wide blades are suitable for still water propulsion, narrow blades are suitable for racing, and icebreakers are suitable for icy waters). Multiple specialized oars are required. Therefore, improvements have been made to create multi-functional oars with quick blade replacement. Utility Model Content

[0004] In view of the shortcomings of the prior art, this application provides a multi-functional propeller with quick blade replacement, which overcomes the shortcomings of the prior art and aims to solve the problem that traditional propellers cannot replace blades in a timely manner according to different waters.

[0005] To achieve the above objectives, this application provides the following technical solution: a multi-functional propeller with quickly replaceable blades, including a propeller shaft, a mounting head fixedly connected to the lower end of the propeller shaft, two elastic clips symmetrically connected to the bottom of the mounting head, a propeller blade clamped between the two elastic clips, a locking collar sleeved on the outside of the mounting head, external threads provided on the outer walls of the two elastic clips, internal threads provided on the inner wall of the locking collar, and the internal threads are adapted to the external threads, the locking collar being threadedly sleeved on the outer walls of the elastic clips.

[0006] By adopting the above technical solution, two elastic clips are symmetrically connected at the bottom of the mounting head. Since the elastic clips have a certain elastic deformation capability, the blade can be clamped and placed between the two elastic clips. Since the external thread on the outer wall of the elastic clip matches the internal thread on the inner wall of the locking collar, the locking collar can be rotated to thread it onto the outer wall of the elastic clip, thereby clamping and fixing the elastic clip through the locking collar. This completes the fixing or disassembly of the blade, allowing users to quickly replace the blade according to the characteristics of the water area.

[0007] As a preferred technical solution of this application, the mounting head is tapered in shape, and the bottom diameter of the mounting head is the same as the inner diameter of the locking collar, and the inner wall of the locking collar abuts against the outer wall of the elastic clip.

[0008] By adopting the above technical solution, the tapered mounting head plays a guiding role, and the inner diameter of the locking collar is the same as the bottom diameter of the mounting head, ensuring that the inner wall of the locking collar can completely fit the outer wall of the elastic clip when the threads are engaged, forming a uniform annular pressure distribution.

[0009] As a preferred technical solution of this application, the outer surface of the blade is symmetrically provided with limiting holes on both sides, and the inner walls of the two elastic clips are fixedly connected with limiting blocks. The limiting blocks are slidably inserted into the inside of the limiting holes, and the limiting holes are adapted to the limiting blocks.

[0010] By adopting the above technical solution, the blade can be completely locked between the two elastic clamps through the cooperation between the limiting hole and the limiting block, and the installation accuracy of the blade can be guaranteed.

[0011] As a preferred technical solution of this application, a positioning block is fixedly connected to the bottom of the elastic clip, and the top of the positioning block is in contact with the bottom of the locking collar.

[0012] By adopting the above technical solution, the locking collar is blocked by the positioning block to prevent the locking collar from detaching from the elastic clip.

[0013] As a preferred technical solution of this application, the outer walls of the locking collar are symmetrically connected with protrusions on both sides.

[0014] By adopting the above technical solution, the friction between the locking collar and the user's hand is increased by setting a convex strip, making it easier for the user to rotate the locking collar.

[0015] As a preferred technical solution of this application, the paddle rod includes a lower rod and an upper rod. The lower end of the lower rod is fixedly connected to the upper end of the mounting head. The upper end of the lower rod is provided with a threaded slot. The lower end of the upper rod is fixedly connected with a threaded connector. The threaded connector is threaded into the inside of the threaded slot. The upper end of the upper rod is fixedly connected with a handle.

[0016] By adopting the above technical solution, the lower rod and the upper rod are threaded together to form a complete propeller rod through the cooperation between the threaded connector and the threaded slot, so that the propeller rod can be disassembled when not in use for easy storage.

[0017] As a preferred technical solution of this application, the propeller shaft and the propeller blade are both carbon fiber components, and the outer surfaces of the propeller shaft and the propeller blade are coated with a matte paint coating.

[0018] By adopting the above technical solutions, the propeller shaft and blades made of carbon fiber materials are lightweight and have high strength. The waterproof ability of the propeller shaft and blades can be increased and the gliding resistance can be reduced by spraying a matte paint coating.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In this utility model, two elastic clips are symmetrically connected to the bottom of the mounting head. Since the elastic clips have a certain elastic deformation capability, the blade can be clamped and placed between the two elastic clips. Since the external thread on the outer wall of the elastic clip matches the internal thread on the inner wall of the locking collar, the locking collar can be rotated to thread it onto the outer wall of the elastic clip, thereby clamping and fixing the elastic clip through the locking collar. This completes the fixing or disassembly of the blade, allowing users to quickly replace the blade according to the characteristics of the water area.

[0020] 2. In this utility model, the blade can be completely locked between the two elastic clamps through the cooperation between the limiting hole and the limiting block, and the installation accuracy of the blade can be guaranteed. The locking ring is blocked by the positioning block to prevent the locking ring from coming off the elastic clamp.

[0021] With reference to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the ways in which the principles of the present invention can be adopted. It should be understood that the scope of the embodiments of the present invention is not limited thereto. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the split structure of this application; Figure 3 This is a partial structural diagram of this application; Figure 4 This is a schematic diagram of the composition of the propeller shaft in this application.

[0023] In the diagram: 1. Paddle shaft; 101. Lower shaft; 102. Upper shaft; 103. Handle; 104. Threaded slot; 105. Threaded connector; 2. Mounting head; 3. Elastic clamp; 4. Paddle blade; 5. Locking collar; 6. External thread; 7. Internal thread; 8. Limiting block; 9. Limiting hole; 10. Positioning block; 11. Raised bar. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1 - Figure 4 As shown, the multi-functional propeller with quick-change blades provided in this embodiment includes a propeller shaft 1. A mounting head 2 is fixedly connected to the lower end of the propeller shaft 1. Two elastic clips 3 are symmetrically connected to the bottom of the mounting head 2. A propeller blade 4 is clamped between the two elastic clips 3. A locking collar 5 is sleeved on the outside of the mounting head 2. External threads 6 are provided on the outer walls of both elastic clips 3, and internal threads 7 are provided on the inner wall of the locking collar 5. The internal threads 7 are compatible with the external threads 6. The locking collar 5 is threaded onto the outer walls of the elastic clips 3. During use, the blade is quickly replaced by... Two elastic clips 3 are symmetrically connected to the bottom of the head 2. Since the elastic clips 3 have a certain elastic deformation capability, the blade 4 can be clamped and placed between the two elastic clips 3. Since the external thread 6 on the outer wall of the elastic clip 3 is compatible with the internal thread 7 on the inner wall of the locking collar 5, the thread can be threaded onto the outer wall of the elastic clip 3 by rotating the locking collar 5. Thus, the elastic clip 3 is clamped and fixed by the locking collar 5, which can complete the fixing or disassembly of the blade 4. This allows users to quickly replace the blade 4 according to the characteristics of the water area.

[0026] In this embodiment, as Figure 1 and 3 As shown, the mounting head 2 is tapered in shape, and the bottom diameter of the mounting head 2 is the same as the inner diameter of the locking collar 5. The inner wall of the locking collar 5 abuts against the outer wall of the elastic clamp 3. In use, the tapered mounting head 2 acts as a guide. The inner diameter of the locking collar 5 is the same as the bottom diameter of the mounting head 2, ensuring that the inner wall of the locking collar 5 can completely fit the outer wall of the elastic clamp 3 when the threads are engaged, forming a uniform annular pressure distribution.

[0027] In this embodiment, as Figure 1 and 3 As shown, limit holes 9 are symmetrically opened on both sides of the outer surface of the blade 4. Limit blocks 8 are fixedly connected to the inner walls of the two elastic clips 3. The limit blocks 8 are slidably inserted into the inside of the limit holes 9, and the limit holes 9 and the limit blocks 8 are adapted to each other. In use, the blade 4 can be completely locked between the two elastic clips 3 through the cooperation between the limit holes 9 and the limit blocks 8, and the installation accuracy of the blade 4 can be guaranteed.

[0028] In this embodiment, as Figure 1 and 3 As shown, a positioning block 10 is fixedly connected to the bottom of the elastic clip 3. The top of the positioning block 10 fits against the bottom of the locking collar 5. In use, the positioning block 10 blocks the locking collar 5 to prevent the locking collar 5 from coming off the elastic clip 3.

[0029] In this embodiment, as Figure 3As shown, the outer walls of the locking collar 5 are symmetrically connected with protrusions 11. During use, the protrusions 11 increase the friction between the locking collar 5 and the user's hand, making it easier for the user to rotate the locking collar 5.

[0030] In this embodiment, as Figure 4 As shown, the paddle 1 includes a lower rod 101 and an upper rod 102. The lower end of the lower rod 101 is fixedly connected to the upper end of the mounting head 2. The upper end of the lower rod 101 is provided with a threaded slot 104. The lower end of the upper rod 102 is fixedly connected to a threaded connector 105, which is threaded into the threaded slot 104. The upper end of the upper rod 102 is fixedly connected to a handle 103. In use, the lower rod 101 and the upper rod 102 are threaded together to form a complete paddle 1 through the cooperation between the threaded connector 105 and the threaded slot 104. This allows the paddle 1 to be disassembled and stored when not in use.

[0031] In this embodiment, as Figure 1 As shown, both the propeller shaft 1 and the propeller blade 4 are carbon fiber components, and the outer surfaces of both the propeller shaft 1 and the propeller blade 4 are coated with a matte paint coating. In use, the propeller shaft 1 and the propeller blade 4 made of carbon fiber material are lightweight and have high strength. The matte paint coating can increase the waterproof ability of the propeller shaft 1 and the propeller blade 4 and reduce the gliding resistance.

[0032] The working principle of this utility model is as follows: When using the multi-functional paddle with quick-change blades of this application, first select a suitable blade 4 according to the characteristics of the water area. Before installing the blade 4, slightly pry open the two elastic clips 3, then place the blade 4 between the two elastic clips 3 and align it with the position of the limiting block 8 and the limiting hole 9. At this time, release the elastic clips 3. As the elastic clips 3 rebound, the limiting block 8 slides into the limiting hole 9. Then, by rotating the locking collar 5, thread it onto the outer wall of the elastic clip 3. The locking collar 5 can clamp and fix the elastic clip 3, thereby completing the fixed installation of the blade 4.

[0033] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., 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 utility model 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. A multi-purpose boat paddle with quick-change blade, comprising a paddle shaft (1), characterized in that, The lower end of the propeller (1) is fixedly connected to an installation head (2). Two elastic clips (3) are symmetrically connected to the bottom of the installation head (2). The propeller blade (4) is clamped between the two elastic clips (3). A locking collar (5) is sleeved on the outside of the installation head (2). The outer walls of the two elastic clips (3) are provided with external threads (6). The inner wall of the locking collar (5) is provided with internal threads (7). The internal threads (7) are adapted to the external threads (6). The locking collar (5) is threaded onto the outer wall of the elastic clips (3).

2. The multi-functional propeller with quick-change blades according to claim 1, characterized in that, The mounting head (2) is tapered in shape, and the bottom diameter of the mounting head (2) is the same as the inner diameter of the locking collar (5). The inner wall of the locking collar (5) abuts against the outer wall of the elastic clip (3).

3. The multi-functional propeller with quick-change blades according to claim 1, characterized in that, The blade (4) has symmetrically arranged limit holes (9) on both sides of its outer surface. The inner walls of the two elastic clips (3) are fixedly connected to limit blocks (8). The limit blocks (8) are slidably inserted into the inside of the limit holes (9), and the limit holes (9) are adapted to the limit blocks (8).

4. The multi-functional propeller with quick-change blades according to claim 1, characterized in that, The bottom of the elastic clip (3) is fixedly connected to a positioning block (10), and the top of the positioning block (10) is in contact with the bottom of the locking collar (5).

5. The multi-functional propeller with quick-change blades according to claim 1, characterized in that, The locking collar (5) has symmetrically connected protrusions (11) on both outer walls.

6. The multi-functional propeller with quick-change blades according to claim 1, characterized in that, The paddle (1) includes a lower rod (101) and an upper rod (102). The lower end of the lower rod (101) is fixedly connected to the upper end of the mounting head (2). The upper end of the lower rod (101) is provided with a threaded slot (104). The lower end of the upper rod (102) is fixedly connected with a threaded connector (105). The threaded connector (105) is threaded into the inside of the threaded slot (104). The upper end of the upper rod (102) is fixedly connected with a handle (103).

7. The multi-functional propeller with quick-change blades according to claim 1, characterized in that, Both the propeller shaft (1) and the blade (4) are carbon fiber components, and the outer surfaces of both the propeller shaft (1) and the blade (4) are coated with a matte paint coating.

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