A boat propeller with increased thrust

Abstract

The utility model provides a kind of ship oar of increasing thrust, including boss, the boss is arranged on the central axis of top blade surface, and the left and right sides of top blade surface are respectively equipped with top groove and are separated by boss, and two sides top groove form independent separate area by boss;The outside groove wall of the top groove is higher than the inside groove wall;The top groove is higher than the inside groove wall by its outside groove wall, and the high-low gradual change structure is cooperated with boss, so that the width direction of top blade surface forms undulating W type profile;In the process of rowing, top blade surface is centered on the surface boss to the water flow of face, and water flow is introduced into two sides top groove, and by the recessed structure of top groove, increase ship thrust is realized.The utility model, top boss and top groove, bottom groove and the water guide drag reduction structure of upper and lower cooperation of inclined surface, and then realize increasing ship thrust.

Description

Technical Field

[0001] This utility model relates to the field of ship propeller equipment technology, specifically a ship propeller that increases thrust. Background Technology

[0002] As a crucial propulsion tool for navigation, sports, and operations on water, the structural design of a paddle directly determines paddling efficiency, power loss, and user experience. To optimize water guidance, some existing paddles typically employ a grooved structure. This aims to increase thrust by guiding water flow through the inclined grooves on the paddle surface. Conversely, it aims to reduce paddling resistance by guiding water flow through the inclined grooves on the paddle surface.

[0003] V-shaped oars are one of the more common design directions. V-shaped oars typically feature a handle, shaft, blades, and a V-shaped groove (such as...). Figure 6 As shown in the diagram, the core structure of a V-shaped oar is a central ridge line on the oar surface, which divides the oar surface into two symmetrical inclined surfaces, forming a V-shaped groove.

[0004] However, when a V-shaped oar is used for propulsion, the water flow is guided by only a single inclined surface, lacking lateral restraint. Some water flow leaks to the edge of the oar blade, resulting in insufficient effective water-catching area and low water flow utilization. Furthermore, it cannot adapt to the dynamic changes in water flow from the near end to the far end of the oar blade. When the water flow impact is concentrated at the near end, the single-height channel wall is difficult to effectively restrain the water flow, making it difficult to meet users' needs for increased boat thrust and high efficiency and stability. Utility Model Content

[0005] The purpose of this invention is to provide a propeller that increases thrust in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A propeller for increasing thrust, including a boss; The device includes a boss located on the central axis of the top paddle surface. Top grooves are located on the left and right sides of the top paddle surface, separated by the boss, forming independent partitioned areas. The outer wall of the top groove is higher than the inner wall. The top grooves, with their gradually varying heights (outer wall higher than inner wall), work in conjunction with the boss to create an undulating W-shaped profile in the width direction of the top paddle surface. During paddling, the top paddle surface uses its upper surface boss to centrally divert the oncoming water flow, directing it into the top grooves on both sides. The recessed structure of the top grooves increases the boat's thrust.

[0007] Preferably, the top blade extends along the length of the blade and is integrally fitted onto the upper surface of the blade. The blade is made of flexible rubber material, which improves the connection stability between the top blade and the blade. The flexible properties of the rubber can adapt to the impact of water flow and reduce structural stress concentration.

[0008] Preferably, the boss extends along the length of the top blade surface, the raised texture on the boss surface is continuously distributed, and the height of the raised texture gradually decreases from the end of the blade near the blade rod to the end of the blade away from the blade rod, so as to achieve a smooth transition of water flow splitting and improve the continuity of the splitting.

[0009] Preferably, the top paddle surface near one end of the paddle rod is integrally formed with one end of the paddle rod, and the other end of the paddle rod is integrally formed with the handle, which reduces the loss during force transmission, improves the overall structural strength of the paddle, and prevents the connection parts from loosening.

[0010] Preferably, the bottom of the handle is provided with a grip groove that extends circumferentially to adapt to the curvature of the fingers, and the top of the handle is provided with a top protrusion. The top protrusion has an arc-shaped protrusion structure that is low on both sides and high in the middle along the width direction of the handle, which improves the fit and comfort of the hand grip, restricts axial sliding during gripping, and realizes rapid hand positioning.

[0011] Preferably, the blades are continuously provided with chamfered edges along their circumference to guide the water flow smoothly, and the chamfered edges connect the top and bottom surfaces of the blades, reducing the impact resistance of the water flow at the blade edges and preventing water flow from stagnating and forming turbulence.

[0012] Preferably, a bottom groove is provided on the central axis of the bottom propeller surface, and bottom inclined surfaces with a certain inclination are provided on the left and right sides of the bottom propeller surface. The bottom groove is used to guide the water flow along the axis of the bottom propeller surface, and the bottom inclined surfaces reduce the water flow from stagnating at the edge of the propeller blade through the inclination angle.

[0013] Preferably, the bottom paddle surface has a raised shape along the width direction of the paddle blade, with the sides of the bottom groove being higher and gradually decreasing towards the edge of the paddle blade. This height distribution is symmetrical about the central axis where the bottom groove is located, which balances the water pressure on both sides of the bottom paddle surface, optimizes the water flow distribution, and improves the stability of the paddle during the paddling process.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention increases the thrust area through a coordinated structure of top boss diversion and top groove limiting, bottom groove orientation and inclined surface diffusion.

[0015] This invention increases the thrust of a boat by utilizing the gradual change in the texture of the raised platform and the height difference of the top groove to contact water flow from different directions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall top structure of this utility model.

[0017] Figure 2 This is a top view schematic diagram of the overall structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the bottom structure of the entire utility model.

[0019] Figure 4 This is a schematic diagram of the bottom structure from another perspective of the entire utility model.

[0020] Figure 5 This is a schematic diagram of the overall W-shaped outline structure of this utility model.

[0021] Figure 6 This is a schematic diagram of a V-shaped propeller structure in the existing technology.

[0022] In the diagram: 1. Handle; 2. Grip groove; 3. Paddle shaft; 4. Paddle blade; 5. Top groove; 6. Boss; 7. Bottom groove; 8. Bottom paddle surface; 9. Top paddle surface; 10. Edge chamfer; 11. Top protrusion; 12. Bottom inclined surface; 13. V-shaped groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0024] Please see Figures 1 to 5 This utility model provides a technical solution: A propeller for increasing thrust includes a boss 6; The boss 6 is located on the central axis of the top paddle surface 9, and the top grooves 5 are symmetrically distributed on the left and right sides of the boss 6, arranged in a mirror image with the boss 6 as the center. The two side walls of the boss 6 form the inner boundaries of the two top grooves 5. The boss 6 and the top paddle surface 9 are integrally formed, ensuring the integrity of the structure and the stability of the connection, and preventing loosening or deformation of the connection due to water flow impact during paddling. The top groove 5 is an integral structure formed by the concavity of the top paddle surface 9 itself. The groove wall and bottom are smoothly transitioned with the rest of the top paddle surface 9, without obvious sharp edges or splicing marks, which not only ensures the smooth flow of water, but also strengthens the structural strength of the top paddle surface 9. The oncoming water flow first contacts the raised surface of the boss 6, smoothly diverting the water flow concentrated in the center of the top paddle surface 9 to both sides. At the same time, the multi-segment concave structure of the top groove 5 expands the effective contact area between the water flow and the paddle surface, allowing the water flow to form a stable flow path within the top groove 5, thereby increasing the thrust of the boat.

[0025] The top propeller surface 9 extends along the entire length of the blade 4, seamlessly covering its upper surface. The extension trajectory of the top propeller surface 9 is perfectly aligned with the length of the blade 4, and its coverage area corresponds to the effective action area of ​​the blade 4's upper surface, ensuring precise matching with the stress-bearing area. The top propeller surface 9 and blade 4 are integrally connected, maintaining the flatness of the blade 4's upper surface and preventing loose connections from affecting water flow and force transmission. The top propeller surface 9 uses a flexible rubber material with excellent elastic deformation capabilities. During stroke, it adapts to the impact of the water flow, closely conforming to the water flow trajectory, improving contact and adhesion, and enhancing water grip. The flexible material buffers the impact force of the water flow on the blade 4, reducing structural stress concentration, lowering the risk of wear or deformation due to long-term stress, and extending its service life.

[0026] The top grooves 5 are symmetrically distributed on the left and right sides of the boss 6. The inner wall of the top groove 5 is close to the side wall of the boss 6, and the outer wall is close to the edge of the blade 4. The height of the outer wall is higher than that of the inner wall, and the height difference between the two forms a smooth gradient transition. Together with the boss 6, they form a continuous undulating W-shaped profile in the width direction of the top blade surface 9. The top groove 5 is an integrally formed structure of the top blade surface 9, without any splicing gaps. The boss 6 and the top groove 5 are formed into a complete structure through an integral molding process. The transition between the two is natural, ensuring the structural integrity of the top blade surface 9 and preventing water flow from stagnating or resisting at the connection point. The gradient structure of the outer wall being higher than the inner wall can form a lateral blocking effect, effectively preventing water flow after being diverted by the boss 6 from leaking to the edge of the blade 4, ensuring that the water flow is always confined within the top groove 5. The W-shaped profile formed by the top groove 5 and the boss 6 not only expands the effective contact area between the water flow and the top blade surface 9, but also guides the water flow smoothly along a preset trajectory through its undulating shape.

[0027] The boss 6 extends along the entire length of the top impeller surface 9, and its extension trajectory perfectly coincides with the length of the top impeller surface 9, located at the central axis of the top impeller surface 9. The surface of the boss 6 has continuously distributed raised textures. The height of these textures gradually decreases from the end near the impeller shaft 3 towards the end of the blade 4, forming a smooth transition. The texture height near the end of the impeller shaft 3 is higher. The higher texture of the boss 6 corresponds to the near end of the groove, which can accurately guide the concentrated water flow into the depth of the top groove 5; it can effectively divert the initially contacting concentrated water flow; and the gradually decreasing height towards the end of the blade 4 conforms to the inertia of the water flow, achieving a smooth transition of the diverted water flow and reducing water flow impact. The lower texture corresponds to the far end of the top groove 5, adapting to the shallow flow state after the water flow is dispersed, preventing water from overflowing the top groove 5.

[0028] The top paddle surface 9, near one end of the paddle shaft 3, precisely aligns with that end. The paddle shaft 3 extends along its length, with its other end correspondingly connected to one end of the handle 1. The handle 1 extends coaxially with the paddle shaft 3. The top paddle surface 9 and the paddle shaft 3 are integrally molded and fixedly connected, as are the paddle shaft 3 and the handle 1, preventing interruption of force transmission due to displacement at the connection point during strokes. The force applied by the hand during strokes is directly and efficiently transmitted to the top paddle surface 9 through the paddle shaft 3, preventing force loss due to gaps or looseness in the connection and improving power generation efficiency. The robust connection structure can withstand the impact of water flow and the gripping force during strokes, reducing the risk of deformation and breakage at the connection point and extending the paddle's lifespan.

[0029] The grip groove 2 is located at the bottom of the handle 1, extending circumferentially. The groove's curvature precisely matches the natural contour of human fingers when bent, covering the grip contact area at the bottom of the handle 1. The top protrusion 11 is located at the top of the handle 1, distributed along its width, forming an arc-shaped protrusion with a symmetrical distribution of lower sides and a higher center. The grip groove 2 and handle 1 are integrally molded. The groove design, adapting to the curvature of the fingers, guides the fingers to quickly position and conform to the handle 1, limiting hand slippage along the handle 1's axis and ensuring a more stable grip. The higher center corresponds to the main force point of the palm, directly against the palm's center, concentrating and transmitting power during strokes. The lower sides follow the natural curvature of the palm's edge, avoiding additional pressure on the palm and improving grip comfort.

[0030] The chamfer 10 is continuously distributed along the entire outer periphery of the blade 4, completely surrounding the edge of the blade 4. The chamfer 10 covers the entire circumferential boundary of the blade 4. The chamfer obliquely connects the top blade surface 9 and the bottom blade surface 8 of the blade 4, smoothly transitioning from the edge of the top blade surface 9 to the edge of the bottom blade surface 8, forming an inclined transition surface surrounding the blade 4. The chamfer 10, blade 4, top blade surface 9, and bottom blade surface 8 are integrally formed structures. During paddling, the inclined transition surface of the chamfer guides the water flow to smoothly change direction, avoiding direct impact of the water flow on the blade 4. After the water flow on the top blade surface 9 is guided out through the top groove 5, when it flows towards the edge of the blade 4, it will naturally transition along the chamfer surface to the side of the bottom blade surface 8, reducing the impact when the water flow on the upper and lower blade surfaces converges at the edge. When the water flow guided by the inclined surface of the bottom blade surface 8 diffuses towards the edge, it also flows out smoothly through the chamfer surface, avoiding accumulation at the edge and forming resistance.

[0031] The bottom groove 7 runs through the central axis along the length of the bottom propeller surface 8, located at the geometric center of the bottom propeller surface 8. Bottom inclined surfaces 12 are symmetrically distributed on the left and right sides of the bottom groove 7, arranged in a mirror image with the bottom groove 7 as the center, covering the remaining area of ​​the bottom propeller surface 8 except for the bottom groove 7. The extension direction of the inclined surfaces is consistent with the length direction of the bottom groove 7 and the bottom propeller surface 8. The bottom inclined surfaces 12, the bottom propeller surface 8, and the bottom groove 7 are all integrally molded. The edges of the inclined surfaces smoothly connect with the sidewalls of the bottom groove 7 and the outer peripheral edges of the blade 4. When paddling, the water flow in contact with the bottom propeller surface 8 is limited by the concave contour of the bottom groove 7, guiding the water flow smoothly along the central axis of the bottom propeller surface 8. By fixing the tilt angle, the bottom inclined surfaces 12 guide the water flow smoothly towards the edge of the blade 4 along the tilt direction, preventing water flow from accumulating and stagnating at the edge of the blade 4, reducing additional resistance caused by water flow stagnation.

[0032] The shape of the bottom paddle surface 8 is symmetrical about the bottom groove 7 at the central axis, and is distributed along the width of the blade 4: the paddle surface areas on both sides of the bottom groove 7 are the core raised parts, gradually decreasing smoothly towards the left and right edges of the blade 4. This height distribution is symmetrical about the central axis where the bottom groove 7 is located. The bottom groove 7 guides the central water flow along the axis, while the higher areas on both sides laterally guide the water flow around the bottom groove 7, preventing excessive convergence of water into the bottom groove 7. The smoothly decreasing curved surface towards the edge guides the bottom water flow to diffuse towards the edge of the blade 4, further reducing water stagnation at the edge and lowering flow resistance in conjunction with the bottom inclined surface 12. The symmetrical arc-shaped protrusions balance the water pressure on both sides of the bottom paddle surface 8, preventing blade 4 from deflecting due to uneven pressure during strokes and improving stroke stability.

[0033] All other parts of this utility model not described herein are the same as existing technologies, or are known technologies, or can be implemented using existing technologies, and will not be described in detail here.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A propeller for increasing thrust, characterized in that, include: A boss (6) is provided on the central axis of the top paddle surface (9). The top paddle surface (9) has top grooves (5) on the left and right sides respectively and is separated by the boss (6). The top grooves (5) on both sides form independent partition areas through the boss (6). The outer groove wall of the top groove (5) is higher than the inner groove wall. The top groove (5) has a gradually changing height structure where the outer groove wall is higher than the inner groove wall. It works in conjunction with the boss (6) to make the width direction of the top paddle surface (9) form an undulating W-shaped profile. During the paddling process, the top paddle surface (9) divides the oncoming water flow in the center through the boss (6) on its upper surface. The water flow is introduced into the top grooves (5) on both sides. The concave structure of the top groove (5) increases the thrust of the boat.

2. The thrust-enhancing propeller according to claim 1, characterized in that, The top blade surface (9) extends along the length of the blade (4) and is integrally attached to the upper surface of the blade (4). The blade (4) is made of flexible rubber material.

3. A thrust-enhancing propeller according to claim 2, characterized in that, The boss (6) extends along the length of the top blade surface (9). The raised texture on the surface of the boss (6) is continuously distributed, and the height of the raised texture gradually decreases from the end of the blade (4) close to the shaft (3) to the end of the blade (4) away from the shaft (3).

4. A thrust-enhancing propeller according to claim 3, characterized in that, The top paddle surface (9) is integrally formed with one end of the paddle rod (3) near the paddle shaft (3), and the other end of the paddle shaft (3) is integrally formed with the handle (1).

5. A thrust-enhancing propeller according to claim 4, characterized in that, The bottom of the handle (1) is provided with a grip groove (2) that extends circumferentially to adapt to the bending arc of the fingers, and the top of the handle (1) is provided with a top protrusion (11). The top protrusion (11) has an arc-shaped protrusion structure with low sides and high center along the width direction of the handle (1).

6. A thrust-enhancing propeller according to claim 5, characterized in that, The blade (4) has a continuous edge chamfer (10) along its circumference to guide the water flow smoothly, and the edge chamfer (10) connects the top blade surface (9) and the bottom blade surface (8) of the blade (4).

7. A thrust-enhancing propeller according to claim 6, characterized in that, A bottom groove (7) is provided on the central axis of the bottom paddle surface (8), and bottom inclined surfaces (12) with a certain inclination are provided on the left and right sides of the bottom paddle surface (8). The bottom groove (7) is used to guide the water flow along the axis of the bottom paddle surface (8), and the bottom inclined surface (12) reduces the water flow at the edge of the blade (4) by tilting the angle.

8. A thrust-enhancing propeller according to claim 7, characterized in that, The bottom blade surface (8) is a raised shape along the width direction of the blade (4), with the bottom groove (7) being high on both sides and gradually decreasing towards the edge of the blade (4), and the height distribution is symmetrical about the central axis where the bottom groove (7) is located.

Images