Carbon fiber paddle

Abstract

The utility model relates to a carbon fiber paddle which comprises a first paddle body and a second paddle body, the first paddle body comprises a first paddle board and a first paddle rod which are connected, a connecting column is arranged at the end, away from the first paddle board, of the first paddle rod, and an anti-disengaging protrusion is arranged on the cylindrical surface of the connecting column in a protruding mode; the second paddle body comprises a second paddle plate and a second paddle rod which are connected, a connecting hole is formed in the end, away from the second paddle plate, of the second paddle rod in an inward concave mode, an in-out sliding groove is formed in the hole wall of the connecting hole in a concave mode and extends in the length direction of the second paddle rod, and a limiting protrusion is further arranged on the hole wall of the connecting hole in a protruding mode. The limiting protrusion and the in-out sliding groove are arranged in a staggered mode in the circumferential direction of the second paddle rod, and the in-out sliding groove is of a through groove structure with the two ends penetrating through, so that the anti-disengaging protrusion can move and be switched between the limiting protrusion and the in-out sliding groove. And the shielding ring sleeve is movably arranged on the first paddle rod, and after the connecting column is installed in the connecting hole, the shielding ring sleeve can move and cover the outer portion of the joint of the first paddle rod and the second paddle rod.

Description

Technical Field

[0001] The utility model relates to the technical field of rowing tools, in particular to a carbon fiber oar. Background Art

[0002] ‌An oar is a rowing tool. The upper end is a round rod for easy gripping, and the lower end is a plate for water scooping. Using Newton's third law in physics, when the oar scoops water, it advances the boat by means of the reaction force of the water wave. There are various types of oars, including flat-blade whitewater oars, crank whitewater oars, spoon oars, Greenland oars, and semi-carbon whitewater oars, etc. Different types of oars are suitable for different rowing needs and environments. For example, spoon oars are suitable for racing and long-distance cruising, while Greenland oars are suitable for sliding in the water to provide efficient propulsion.

[0003] Compared with a single-headed spoon oar, which can only row the boat once in one action cycle, a double-headed spoon oar can continuously row left and right twice in one action cycle, so it has a stronger rowing efficiency for the boat and is more widely used in boat racing events such as dragon boats and kayaks. However, existing oars are generally made of materials such as wood and metal and are of an integral structure, which are heavy, laborious to operate, and not convenient for storage and carrying; although there are also some detachable and assembled split oars on the market, the two parts of the oar body are only assembled and fixed by a simple interference fit of inserting a post into a socket or a threaded connection of a threaded post and a threaded hole. When the post is inserted into the socket and disassembled and assembled repeatedly, the two parts will not be able to be effectively fastened due to the deformation of the post and / or the socket, resulting in the loosening or even falling off of the two parts of the oar body, affecting normal use; when the threaded hole is screwed with the threaded post, when the user rotates and flips the oar in the air multiple times, torque will be applied to the two parts of the oar body, which is also likely to cause the loosening of the threaded hole and the threaded post and affect the connection reliability. The gap formed by the loosening is also prone to the problem of pinching hands, affecting the safety and experience of using the oar. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a carbon fiber oar to solve the problems of loosening or even falling off of the connection, affecting normal use, and pinching hands, etc., which affect the safety and experience of use.

[0005] According to one aspect of the utility model, a carbon fiber oar is provided, which includes:

[0006] A first oar body, the first oar body includes a first oar blade and a first oar rod connected to each other. A connecting post is provided at one end of the first oar rod away from the first oar blade, and a retaining protrusion is convexly provided on the column surface of the connecting post;

[0007] A second paddle body, the second paddle body includes a connected second paddle board and a second paddle rod. One end of the second paddle rod away from the second paddle board is recessed inwardly to form a connection hole. A through chute is recessed on the hole wall of the connection hole. The through chute extends along the length direction of the second paddle rod. A limiting protrusion is also protruded on the hole wall of the connection hole. The limiting protrusion and the through chute are arranged out of alignment in the circumferential direction of the second paddle rod. The through chute is provided with a through groove structure that penetrates at both ends, so that the anti-disengagement protrusion can move and switch between the limiting protrusion and the through chute; and

[0008] A shielding ring sleeve, the shielding ring sleeve is movably arranged on the first paddle rod, and after the connecting column is inserted into the connection hole, the shielding ring sleeve can move and cover the outside of the joint of the first paddle rod and the second paddle rod.

[0009] In one embodiment, the limiting protrusion and the through chute are distributed at 90° in the circumferential direction of the second paddle rod.

[0010] In one embodiment, two anti-disengagement protrusions, through chutes and limiting protrusions are provided, and they are assembled and matched in a separable manner one by one.

[0011] In one embodiment, both the anti-disengagement protrusion and the limiting protrusion are spherical protrusions.

[0012] In one embodiment, a stepped surface is formed between the connecting column and the end surface of the first paddle rod facing the second paddle rod. A receiving hole is provided on the stepped surface. An elastic pressing member is inserted inside the receiving hole. A part of the elastic pressing member extends out of the receiving hole, and the part extending out of the receiving hole elastically abuts against the end surface of the second paddle rod.

[0013] In one embodiment, an external thread structure is provided on the outer peripheral wall of one end of the first paddle rod close to the second paddle rod. An internal thread structure is provided on the inner ring wall of the shielding ring sleeve. The internal thread structure is threadedly engaged with the external thread structure.

[0014] In one embodiment, an annular card slot is formed on the outer peripheral wall of the second paddle rod corresponding to the limiting protrusion. An annular clamping protrusion is protruded on the inner ring wall of the shielding ring sleeve. The annular clamping protrusion is clamped in the annular card slot.

[0015] In one embodiment, anti-slip lines are provided on the outer ring wall of the shielding ring sleeve.

[0016] In one embodiment, a first water diversion rib is provided on the water pushing surface of the first paddle board. The first water diversion rib extends along the length direction of the first paddle board.

[0017] In one embodiment, a second water-dividing rib is provided on the water-pushing surface of the second paddle blade, and the second water-dividing rib extends along the length direction of the second paddle blade.

[0018] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0019] When the carbon fiber oar of this solution is in use, the user holds the first oar body and the second oar body with both hands respectively, then aligns the connecting column with the connecting hole, and then applies an inward thrust towards the middle to the first oar body and the second oar body, so that the connecting column is inserted into the connecting hole and slides along the access chute. When the connecting column moves to the end of the access chute (i.e., the end far from the first oar body) under the guiding action of the access chute, then rotate the first oar rod and / or the second oar rod, so that the anti-detachment protrusion rotates a preset angle along the circumferential direction of the second oar rod, and can be clamped and fixed with the limit protrusion, thereby axially limiting the first oar rod and the second oar rod, ensuring the connection and fixation of the first oar body and the second oar body. Since the clamping force between the anti-detachment protrusion and the limit protrusion is large enough, the first oar rod and the second oar rod are not prone to looseness, and because the access chute and the limit protrusion are arranged in a circumferentially misaligned manner, even if the anti-detachment protrusion and the limit protrusion become loose, the anti-detachment protrusion is not easy to move into the access chute, and then it can prevent the first oar body and the second oar body from completely detaching; further, push the shielding ring sleeve pre-installed on the first oar rod parallel towards the second oar body, so that the shielding ring sleeve moves to cover the outside of the joint of the first oar rod and the second oar rod, realizing the shielding of the assembly gap between the oar rod and the second oar rod. In this way, by axially clamping the anti-detachment protrusion and the limit protrusion, it can ensure the stable and reliable connection of the first oar body and the second oar body, and by relatively rotating the first oar rod and the second oar rod in the circumferential direction, the anti-detachment protrusion can be flexibly switched between the limit protrusion and the access chute, facilitating the assembly or disassembly of the first oar body and the second oar body; furthermore, by covering the joint of the first oar rod and the second oar rod with the shielding ring sleeve, it can avoid pinching the hand by the assembly gap, improving the safety and experience of using the carbon fiber oar. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is an assembly structure diagram of a carbon fiber oar in an embodiment;

[0022] Figure 2 For Figure 1Explosion structure diagram of a carbon fiber oar.

[0023] Among them:

[0024] 100, carbon fiber oar; 10, first oar body; 11, first oar blade; 12, first oar shaft; 13, connecting column; 14, anti - detachment protrusion; 20, second oar body; 21, second oar blade; 22, second oar shaft; 221, annular card slot; 23, connecting hole; 24, inlet - outlet chute; 25, limiting protrusion; 30, shielding ring sleeve; 31, anti - slip pattern; 40, first water - dividing rib; 50, second water - dividing rib. Specific embodiments

[0025] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate 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 intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0028] Please refer to Figure 1 - Figure 2, a carbon fiber oar 100 according to an embodiment, which comprises: a first oar body 10, the first oar body 10 includes a connected first oar blade 11 and a first oar rod 12, a connecting column 13 is arranged at one end of the first oar rod 12 away from the first oar blade 11, and an anti-detachment protrusion 14 is convexly arranged on the column surface of the connecting column 13; a second oar body 20, the second oar body 20 includes a connected second oar blade 21 and a second oar rod 22, a connecting hole 23 is concavely arranged at one end of the second oar rod 22 away from the second oar blade 21, an access chute 24 is concavely formed on the hole wall of the connecting hole 23, the access chute 24 extends along the length direction of the second oar rod 22, a limiting protrusion 25 is also convexly arranged on the hole wall of the connecting hole 23, the limiting protrusion 25 and the access chute 24 are arranged in a dislocation manner in the circumferential direction of the second oar rod 22, and the access chute 24 is set as a through groove structure with both ends penetrating, so that the anti-detachment protrusion 14 can move and switch between the limiting protrusion 25 and the access chute 24; and a shielding ring sleeve 30, the shielding ring sleeve 30 is movably arranged on the first oar rod 12, and after the connecting column 13 is inserted into the connecting hole 23, the shielding ring sleeve 30 can move and cover the outside of the joint of the first oar rod 12 and the second oar rod 22.

[0029] Implementing the embodiments of the present invention will have the following beneficial effects:

[0030] When the carbon fiber oar 100 of this solution is in use, the user holds the first oar body 10 and the second oar body 20 with both hands respectively. Then, align the connecting column 13 with the connecting hole 23. Immediately afterwards, apply an inward thrust towards the middle to the first oar body 10 and the second oar body 20, so that the connecting column 13 is inserted into the connecting hole 23 and slides along the access chute 24. When the connecting column 13 moves to the end of the access chute 24 (i.e., the end far from the first oar body 10) under the guiding action of the access chute 24, then rotate the first oar rod 12 and / or the second oar rod 22, so that the anti-disengagement protrusion 14 rotates a preset angle along the circumferential direction of the second oar rod 22, and can be engaged and fixed with the limit protrusion 25. Thus, the first oar rod 12 and the second oar rod 22 are axially limited, ensuring that the first oar body 10 and the second oar body 20 are connected and fixed. Since the clamping force between the anti-disengagement protrusion 14 and the limit protrusion 25 is large enough, the first oar rod 12 and the second oar rod 22 are not prone to looseness. And because the access chute 24 and the limit protrusion 25 are arranged in a circumferentially offset manner, even if the anti-disengagement protrusion 14 and the limit protrusion 25 become loose, the anti-disengagement protrusion 14 is not easily moved into the access chute 24, thereby preventing the first oar body 10 and the second oar body 20 from completely separating; further, push the shielding ring sleeve 30 pre-installed on the first oar rod 12 parallel towards the second oar body 20, so that the shielding ring sleeve 30 moves to cover the outside of the joint of the first oar rod 12 and the second oar rod 22, realizing the shielding of the assembly gap between the oar rod and the second oar rod 22. In this way, with the axial clamping of the anti-disengagement protrusion 14 and the limit protrusion 25, it can be ensured that the first oar body 10 and the second oar body 20 are stably and reliably connected. And by relatively rotating the first oar rod 12 and the second oar rod 22 in the circumferential direction, the anti-disengagement protrusion 14 can be flexibly switched between the limit protrusion 25 and the access chute 24, facilitating the assembly or disassembly of the first oar body 10 and the second oar body 20; moreover, by covering the joint of the first oar rod 12 and the second oar rod 22 with the shielding ring sleeve 30, it can avoid pinching the hand by the assembly gap, improving the safety and experience of using the carbon fiber oar 100.

[0031] For example, in this application, the limit protrusion 25 and the access chute 24 are distributed at 90° in the circumferential direction of the second oar rod 22. The 90° distribution along the circumferential direction is convenient for forming a safety distance between the limit protrusion 25 and the access chute 24, so that they do not interfere with each other during processing. On the other hand, it is easier for the user to accurately control the rotation angle of the first oar rod 12 or the second oar rod 22, so as to accurately and effectively realize the assembly or disassembly of the first oar body 10 and the second oar body 20.

[0032] Furthermore, there are two anti-loosening protrusions 14, access chutes 24 and limiting protrusions 25, and they are assembled and matched in a separable manner one by one. It can be understood that the two anti-loosening protrusions 14, the two access chutes 24 and the two limiting protrusions 25 are arranged in a 180° straight line. After the first paddle body 10 and the second paddle body 20 are assembled, the two anti-loosening protrusions 14 are respectively clamped with the corresponding limiting protrusions 25 one by one to form a greater clamping force, further improving the connection firmness between the first paddle body 10 and the second paddle body 20 and preventing the first paddle body 10 and the second paddle body 20 from loosening or even detaching during use.

[0033] In order to reduce the frictional resistance and wear during mutual rotation during installation or disassembly, both the anti-loosening protrusion 14 and the limiting protrusion 25 are spherical protrusions.

[0034] In one embodiment, a stepped surface is formed between the connecting column 13 and the end surface of the first paddle rod 12 facing the second paddle rod 22. A receiving hole is provided in the stepped surface, and an elastic pressing member is inserted into the interior of the receiving hole. A part of the elastic pressing member extends out of the receiving hole, and the part extending out of the receiving hole elastically abuts against the end surface of the second paddle rod 22. After the first paddle body 10 and the second paddle body 20 are assembled, by means of the elastic pressing member abutting against the end surface of the second paddle rod 22, the generated elastic pressing force can form an elastic pre-tightening effect, generating an elastic thrust force that moves the first paddle rod 12 and the second paddle rod 22 away from each other, thereby increasing the clamping force between the anti-loosening protrusion 14 and the limiting protrusion 25, and further effectively preventing the first paddle body 10 and the second paddle body 20 from relatively rotating and loosening or even detaching.

[0035] For example, the elastic pressing member can be one of a spring, an elastic column, a spring piece, etc.

[0036] In one embodiment, an external thread structure is provided on the outer peripheral wall of one end of the first paddle rod 12 close to the second paddle rod 22, and an internal thread structure is provided on the inner peripheral wall of the shielding ring sleeve 30. The internal thread structure is threadedly engaged with the external thread structure. On the one hand, by means of the threaded engagement between the internal thread structure and the external thread structure, the shielding ring sleeve 30 is conveniently and firmly installed on the first paddle rod 12. On the other hand, after the first paddle rod 12 and the second paddle rod 22 are inserted and rotated into place, by screwing the shielding ring sleeve 30, relying on the transmission characteristics of the thread pair, the shielding ring sleeve 30 can conveniently move axially and quickly move to the joint of the first paddle rod 12 and the second paddle rod 22, with convenient, labor-saving and efficient operation; furthermore, the thread pair also has a self-locking effect, which can ensure the stable installation position of the shielding ring sleeve 30 and prevent it from shifting and loosening due to external forces during the use of the oar.

[0037] Please refer to Figure 2, in one embodiment, an annular card slot 221 is formed on the outer peripheral wall of the second paddle rod 22 corresponding to the position of the limit projection 25. An annular clamping projection protrudes from the inner ring wall of the shielding ring sleeve 30, and the annular clamping projection is clamped in the annular card slot 221. When the shielding ring sleeve 30 is screwed and moved to the joint of the first paddle rod 12 and the second paddle rod 22, the annular clamping projection will automatically be clamped into the annular card slot 221. On the one hand, the annular clamping projection is clamped and fixed with the annular card slot 221, which improves the connection strength and stability between the shielding ring sleeve 30 and the second paddle rod 22. On the other hand, the annular gap between the shielding ring sleeve 30 and the second paddle rod 22 is blocked, preventing water and impurities such as fine gravel in the water from entering the shielding ring sleeve 30 during use, causing frictional wear and erosion damage to the shielding ring sleeve 30, the first paddle rod 12 and the second paddle rod 22 assembly, and reducing the service life of the carbon fiber oar 100.

[0038] To avoid slipping when screwing the shielding ring sleeve 30 and affecting the effective operation, anti-slip patterns 31 are provided on the outer ring wall of the shielding ring sleeve 30.

[0039] For example, the anti-slip patterns 31 can be multiple strip-shaped protrusions arranged side by side at intervals along the circumferential direction, protrusions arranged in an array, etc., which can effectively increase the friction with the palm and reduce the probability of slipping.

[0040] Please refer to Figure 2 , in another embodiment, a first water diversion rib 40 is provided on the water pushing surface of the first paddle board 11, and the first water diversion rib 40 extends along the length direction of the first paddle board 11. Similarly, a second water diversion rib 50 is provided on the water pushing surface of the second paddle board 21, and the second water diversion rib 50 extends along the length direction of the second paddle board 21.

[0041] The water pushing surface can refer to the front or back surface of the first paddle board 11 and the second paddle board 21, specifically the side surfaces in contact with water when the first paddle board 11 and the second paddle board 21 move, and obtain a reverse acting force applied by the water by pushing the water, so that the boat swims forward or backward. By providing the first water diversion rib 40 and the second water diversion rib 50 on the water pushing surface, the water can be diverted, making it easier for the water to flow through the water pushing surface when being pushed by the first paddle board 11 and the second paddle board 21, thereby reducing the resistance received by the first paddle board 11 and the second paddle board 21, making the operation more labor-saving and reducing the burden on the rowing personnel.

[0042] The above embodiments only represent several implementation manners of the present utility model, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

Claims

1. A carbon fiber oar, characterized in that, Comprising: A first paddle body, the first paddle body includes a first paddle board and a first paddle rod connected to each other. A connecting column is provided at one end of the first paddle rod away from the first paddle board, and a retaining protrusion is convexly provided on the column surface of the connecting column; A second paddle body, the second paddle body includes a second paddle board and a second paddle rod connected to each other. A connecting hole is concavely provided at one end of the second paddle rod away from the second paddle board, and an access chute is concavely formed on the hole wall of the connecting hole. The access chute extends along the length direction of the second paddle rod. A limiting protrusion is also convexly provided on the hole wall of the connecting hole. The limiting protrusion and the access chute are arranged in a staggered manner in the circumferential direction of the second paddle rod. The access chute is provided with a through groove structure that penetrates at both ends, so that the retaining protrusion can move and switch between the limiting protrusion and the access chute; And A shielding collar, the shielding collar is movably provided on the first paddle rod, and after the connecting column is inserted into the connecting hole, the shielding collar can move and cover the outside of the joint of the first paddle rod and the second paddle rod.

2. The carbon fiber oar according to claim 1, characterized in that, The limiting protrusion and the access chute are distributed at 90° in the circumferential direction of the second paddle rod.

3. The carbon fiber oar according to claim 2, characterized in that, There are two retaining protrusions, access chutes and limiting protrusions respectively, and they are assembled and matched in a separable manner one by one.

4. The carbon fiber oar according to claim 1, characterized in that, Both the retaining protrusion and the limiting protrusion adopt spherical protrusions.

5. The carbon fiber oar according to claim 1, wherein A stepped surface is formed between the connecting column and the end surface of the first paddle rod facing the second paddle rod. A receiving hole is provided in the stepped surface, and an elastic pressing member is inserted into the interior of the receiving hole. A part of the elastic pressing member extends out of the receiving hole, and the part extending out of the receiving hole elastically abuts against the end surface of the second paddle rod.

6. The carbon fiber oar according to claim 1, characterized in that An external thread structure is provided on the outer peripheral wall of the first paddle rod near the second paddle rod, and an internal thread structure is provided on the inner ring wall of the shielding collar. The internal thread structure is adapted to be screwed with the external thread structure.

7. The carbon fiber oar according to claim 1, wherein An annular card slot is formed on the outer peripheral wall of the second paddle rod corresponding to the limiting protrusion, and an annular clamping protrusion is convexly provided on the inner ring wall of the shielding collar. The annular clamping protrusion is clamped in the annular card slot.

8. The carbon fiber oar according to claim 1, wherein, An anti-slip pattern is provided on the outer ring wall of the shielding collar.

9. The carbon fiber oar according to claim 1, wherein, A first water dividing rib is provided on the water pushing surface of the first paddle board, and the first water dividing rib extends along the length direction of the first paddle board.

10. The carbon fiber oar according to claim 1, characterized in that, A second water dividing rib is provided on the water pushing surface of the second paddle board, and the second water dividing rib extends along the length direction of the second paddle board.

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