Paddle with non-linear paddle rod
By designing a paddle with a non-linear paddle, the yaw problem caused by traditional paddle design is solved, and the configuration of the blade close to the center line is realized, reducing yaw and improving paddling efficiency.
Patent Information
- Application Number
- CN202380061013.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-06-24
- Filing Date
- 2023-06-23
- Publication Date
- 2025-04-08
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The paddles of traditional standing paddle boards (SUP) and other water transportation vehicles have obvious yaws every time they paddle due to the straight paddle design, and users need to frequently change hands to hold the paddle, further aggravating unwanted yaws and lateral drifts.
A paddle with a non-linear paddle is designed, which includes a gripping section and a displacement section, which extends laterally from the axis of the paddle, and the blades are connected to the end of the displacement section so that the blades can extend laterally from both sides of the axis of the paddle when rowing linearly and further extend in a direction perpendicular to the lateral extension.
With this design, the blades can be located close to or directly below the centerline of the water vehicle, minimizing undesirable yaw, and the user can operate a virtual straight paddle, improving the efficiency and stability of paddling.
Smart Images
Figure CN119790002A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to paddles for human-powered water vehicles, and more particularly to paddles for stand-up paddle boards (SUPs) and the like. Background Art
[0002] Traditional paddles used to propel watercraft, including those used in stand-up paddle boards (SUPs), typically have a straight paddle shaft connected to a paddle blade. The user stands on the paddle board, holds the paddle shaft with both hands and applies force to the paddle. Typically, on a paddle- or scull-driven boat, the paddle blade always strokes to the side of the hull. For watercraft that require unilateral paddling, placing the paddle blade on one side of the board is a disadvantage because it causes a significant yaw with each stroke. This yaw is unnecessary and inefficient if the user intends to go in a straight line.
[0003] Additionally, on SUP watercraft, users must switch hands to hold the paddle, shifting the paddle from one side to the other. As a result, SUP users often paddle multiple times in a row on one side before switching to the other side, further exacerbating unwanted yaw and lateral drift. While paddling with the paddle as close to the SUP board as possible can prevent yaw to some extent, doing so can cause the paddle shaft to come into contact with the board, interfering with the paddling action and, over time, potentially damaging the board. Summary of the invention
[0004] In order to solve the above technical problems, the utility model provides a paddle with a non-linear paddle shaft.
[0005] The present application provides a paddle with a non-straight paddle shaft, comprising:
[0006] A paddle shaft having a grip section and a displacement section, the grip section defining a paddle axis and including a first grip structure for holding the paddle shaft in a given position, the displacement section extending transversely from the paddle axis;
[0007] a paddle connected to the end of the displacement section, wherein the paddle axis is vertical when viewed from the rear cross section, and the paddle blade extends laterally from both sides of the paddle axis when in a straight-ahead paddling state;
[0008] And, wherein the blade further extends in a direction perpendicular to the lateral extension direction.
[0009] Optionally, wherein when the paddle axis is vertical and the paddle is viewed in rear cross-section, the paddle axis intersects the paddle blade in a straight line stroke.
[0010] Optionally, when the propeller axis is vertical, the pitch angle of the best fit plane of the blade relative to the vertical direction is less than + / - 25 degrees.
[0011] Optionally, the best fit plane of the displacement portion and the best fit plane of the blade are arranged in one of the following ways:
[0012] coplanar;
[0013] parallel;
[0014] And, when the propeller axis is vertical, the yaw angle relative to each other can vary by up to + / - 30 degrees.
[0015] Optionally, the best fit plane of the displacement portion and the best fit plane of the blade are arranged in one of the following ways:
[0016] coplanar;
[0017] parallel;
[0018] And, when the propeller axis is vertical, the pitch angle variation relative to each other can reach + / - 30 degrees.
[0019] Optionally, wherein the gripping portion has a front facing forward and a rear facing rearward, the first gripping structure has a shaped surface extending laterally from the paddle axis and fixedly aligned with the paddle blade when the paddle axis is substantially vertical and the paddle is positioned in a given watercraft for straight paddling.
[0020] Optionally, the extension length of the paddle in a direction perpendicular to the transverse extension direction is greater than twice the horizontal cross-sectional dimension DS of the grip portion.
[0021] Optionally, the extension length of the paddle in the direction perpendicular to the transverse extension direction is greater than four times the horizontal cross-sectional dimension DS of the grip portion.
[0022] Optionally, wherein, vertically below the displacement portion extending from the paddle axis, the displacement portion extends laterally back to the paddle axis.
[0023] The present invention also provides a paddle device for human-powered water vehicles, comprising:
[0024] a first paddle shaft segment defining a paddle axis and configured to perform a paddling motion when gripped by a user;
[0025] a second oar shaft segment connected to the first oar shaft segment, extending from the oar axis, and configured to fit around the water vehicle when the user paddles forward;
[0026] a paddle blade connected to a distal end of the second paddle shaft segment and aligned with the first paddle shaft segment;
[0027] Therein, when the paddle axis is vertical and the paddle is viewed from a rear cross-section, the paddle axis intersects the paddle blade during a straight stroke.
[0028] Optionally, the best fit plane of the displacement portion and the best fit plane of the blade are arranged in one of the following ways:
[0029] coplanar;
[0030] parallel; and
[0031] The angle variation between them can be up to + / - 30 degrees.
[0032] Optionally, the yaw angle variation of the best fit plane of the displacement portion and the best fit plane of the blade when the propeller axis is vertical can reach + / - 30 degrees.
[0033] Optionally, the pitch angle variation of the best fit plane of the displacement portion and the best fit plane of the blade when the propeller axis is vertical can reach + / - 30 degrees.
[0034] Optionally, the first paddle shaft segment has a shaped surface located within the first paddle shaft segment and indicating the orientation of the paddle by touch when the user holds the paddle; and
[0035] The surface is fixedly aligned with the paddle so that, given the orientation of the shaped surface location, a similar orientation of the paddle can be achieved.
[0036] Optionally, wherein the first paddle shaft section has a front portion facing forward and a rear portion facing rearward, when the paddle axis is substantially vertical and the paddle is positioned for a water vehicle to perform straight paddling, the first gripping structure has a shaped surface extending laterally from the paddle axis and fixedly aligned with the paddle blade.
[0037] Optionally, wherein, when viewed from a rear cross-section, the paddle axis is vertical and paddling in a straight line, the configuration of the first paddle shaft section and the paddle blade causes the paddle blade to extend laterally from both sides of the paddle axis; and the paddle blade further extends in a direction perpendicular to the lateral extension direction.
[0038] Optionally, the vertically extending length of the blade in the lateral extension direction is three times or more of the horizontal cross-sectional dimension DS of the first blade shaft segment.
[0039] In summary, the advantages and beneficial effects of the utility model are:
[0040] The present invention provides a paddle with a non-linear paddle shaft that enables the paddle blade to be positioned below the watercraft during paddling. Because the non-linear paddle shaft is not obstructed by the sides of the hull, the paddle blade can be positioned very close to or even directly below the centerline of the watercraft, with the user's hands holding the paddle shaft close to the centerline. This configuration has the effect of allowing the user to operate a virtual straight paddle that passes through the body of the watercraft so that the paddle blade is nearly close to or directly below the centerline of the vehicle during paddling, thereby minimizing undesirable yaw.
[0041] Modern materials allow paddles with non-straight paddle shafts to be strong and lightweight, and therefore effective and practical. The invention can be used in stand-up paddle boards, kayaks and other watercraft that use paddles or oars for propulsion, especially those that are typically operated by single-sided paddling.
[0042] The objects of the present invention and related objects are achieved by using a paddle having a non-straight paddle shaft as described herein. BRIEF DESCRIPTION OF THE DRAWINGS
[0043] Figure 1 and Figure 2 3 and 4, respectively, a perspective view and a rear view of a paddle according to an embodiment of the present invention.
[0044] Figure 3 is a rear view of a paddle according to another embodiment of the present invention. DETAILED DESCRIPTION
[0045] See also Figure 1 and Figure 2 , FIG2 shows an embodiment of a paddle 100 according to the present invention. This embodiment is designed for use with a stand-up paddle board (SUP) 130. The paddle 100 includes a paddle shaft 110 and a paddle blade 120. In this embodiment, the paddle shaft 110 has a substantially straight section 111 and a curved section 112. The paddle blade 120 is connected to the end of the curved section 112, and the curved plane of the curved section 112 can be substantially coplanar with the best fit plane of the paddle blade 120.
[0046] A handle, grip, surface or other structure 115 is preferably provided at the top or slightly below the straight section of the paddle shaft to allow the user to flexibly adjust the orientation of the paddle blade relative to the water surface. The grip structure 115 is preferably perpendicular to the straight-ahead direction of the paddle (when rowing a straight line) and can vary within a range of ±10, 15, 20 or even 25 degrees or more without departing from the scope of the present invention. This is the change in the yaw angle of the paddle when the paddle axis is vertical. The grip structure 115 can have different configurations, including a surface shape along the paddle shaft to identify the orientation of the paddle blade when the user grips it (i.e., the alignment between the grip surface and the paddle blade).
[0047] When the user operates the paddle 100 to propel the stand-up paddle board 130, the user holds the straight section 111 of the paddle shaft with both hands and applies the stroke force through the paddle shaft 110. In a typical stroke, the paddle blade 120 is inserted into the water at the side of the paddle board 130 and in front of the user, and then the paddle blade is pulled backward relative to the paddle board 130 to push the board forward. At the end of the stroke, the paddle blade 120 is removed from the water and moves forward on the surface of the water to start the next stroke. During the stroke, the straight section 111 of the paddle shaft is located above the paddle board 130, the curved section 112 bypasses the paddle board 130, and the paddle blade 120 is located below the paddle board 130 (such as Figure 2 This allows the user to operate a virtual straight paddle across the board, allowing the blade to be very close to or directly under the centerline of the board, greatly reducing unwanted yaw.
[0048] In one embodiment, the center of area 121 of the paddle blade 120 may intersect with the straight section 111 of the paddle shaft or an imaginary line or "paddle axis" of the straight section 111 of the paddle shaft held by the user's hands. The water-contacting surface or "face" of the paddle blade 120 is configured to have (nearly) maximum water resistance to propel the water vehicle forward. Such a face may be provided on both sides of the paddle blade 120 to support left-hand and right-hand use.
[0049] When the paddle axis is vertical, the face of the blade and the blade itself may be vertical, but may vary within a pitch angle range of ±10, 15, 20, 25 degrees or more without departing from the scope of the invention. Similarly, while the blade (and / or the face of the blade) may be perpendicular to the straight-ahead direction, the face / blade may also vary within a yaw angle range of ±10, 15, 20, 25 degrees or more (similar to the angular variation of the grip structure 115).
[0050] like Figure 2 As shown, the paddle may extend transversely to both sides of the paddle axis and may also extend perpendicular to the transverse extension direction. The diameter or other horizontal cross-sectional dimension DS of the first paddle shaft segment 111 (if not circular) is relatively thin relative to the paddle blade. For example, the extension of the paddle blade in the direction perpendicular to the transverse extension direction may be 2, 3, 4, 5, 6-10 times or more of DS.
[0051] The shape of the curved section 112 is selected to fit a typical SUP board. A paddle designed for a wide or narrow board should ideally have a paddle shaft shape that fits the board type. Figure 1-Figure 2 In the embodiment of the present invention, the paddle shaft 110 has a straight section 111 and a curved section 112 to enable the user's hands and the paddle blade 120 to be close to the centerline of the paddle board 130 during paddling, although other embodiments may have different shapes without departing from the scope of the invention. For example, the curved section 112 may be replaced by a plurality of short straight sections connected at angles; or the straight section 111 may be replaced by one or more non-straight paddle shaft sections to accommodate ergonomic or aesthetic purposes.
[0052] The bend or displacement section 112 may have a best fit plane, and the blade may have a similar plane. In one embodiment, the two planes may be parallel or coplanar. However, in other embodiments, the arrangement of the two best fit planes may be different in pitch and yaw angles (when the propeller axis is vertical). This variation may vary within a range of ±10, 15, 20, 25 degrees or more without departing from the scope of the invention.
[0053] The paddle shaft 110 is made of a rigid material that is not easily deformed during paddling. Carbon fiber is a suitable material, which is also very light. The rigidity of the material allows the paddling force applied to the straight section 111 to be effectively transferred to the paddle blade 120 through the curved section 112.
[0054] This embodiment shows the invention being used to propel a SUP board, but the paddle of the invention can also be used in other paddle or oar driven water vehicles.
[0055] Figure 3 Another embodiment of a paddle according to the present invention is shown. This embodiment is designed for use with a kayak 230. The paddle 200 includes a paddle shaft 210 and two paddle blades 220. The paddle shaft 210 has a substantially linear straight section 211 and two curved sections 212, which are respectively connected to both ends of the straight section 211. The paddle blades 220 are connected to the curved sections 212. The user holds the straight section 211 and paddles alternately on both sides of the kayak 230. During the paddling process, the curved section 212 currently in contact with the water surface bypasses the cross section of the kayak 230, allowing the paddle blades 220 to move like Figure 1-2 The paddle is located below the kayak 230 like a SUP paddle.
[0056] Although the present invention has been described in conjunction with its specific embodiments, it should be understood that the present invention can be further modified. This application is intended to cover all variants, uses or adaptations based on the principles of the present invention, including any deviations from the contents described in this specification but belonging to the known or conventional practices in the art, and these variants or improvements can be applied to the aforementioned basic features and fall within the scope of the present invention and the limitations of the appended claims.
Claims
1. A paddle for propelling a water vehicle, characterized in that: include: A paddle shaft having a grip section and a displacement section, the grip section defining a paddle axis and including a first grip structure for holding the paddle shaft in a given position, the displacement section extending transversely from the paddle axis; a paddle connected to the end of the displacement section, wherein the paddle axis is vertical when viewed from the rear cross section, and the paddle blade extends laterally from both sides of the paddle axis when in a straight-ahead paddling state; And, wherein the blade further extends in a direction perpendicular to the lateral extension direction.
2. The paddle according to claim 1, characterized in that: in, When the paddle axis is vertical and the paddle is viewed in rear cross-section, the paddle axis intersects the paddle blade during a straight stroke.
3. The paddle according to claim 1, characterized in that: in, When the propeller axis is vertical, the pitch angle of the best fit plane of the blade relative to the vertical direction is less than + / -25 degrees.
4. The paddle according to claim 2, characterized in that: The best fit plane of the displacement part and the best fit plane of the blade are arranged in one of the following ways: coplanar; parallel; And, when the propeller axis is vertical, the yaw angle relative to each other can vary by up to + / - 30 degrees.
5. The paddle according to claim 2, characterized in that: The best fit plane of the displacement part and the best fit plane of the blade are arranged in one of the following ways: coplanar; parallel; And, when the propeller axis is vertical, the pitch angle variation relative to each other can reach + / - 30 degrees.
6. The paddle according to claim 1, characterized in that: The grip portion has a front facing forward and a rear facing rearward, and when the paddle axis is substantially vertical and the paddle is positioned in a given water vehicle for straight paddling, the first grip structure has a shaped surface extending laterally from the paddle axis and fixedly aligned with the paddle blade.
7. The paddle according to claim 1, characterized in that The extension length of the blade in the direction perpendicular to the transverse extension direction is greater than twice the horizontal cross-sectional dimension DS of the gripping portion.
8. The paddle according to claim 1, characterized in that The extension length of the blade in the direction perpendicular to the transverse extension direction is greater than four times the horizontal cross-sectional dimension DS of the gripping portion.
9. The paddle according to claim 1, characterized in that in, Vertically below the displacement portion extending from the paddle axis, the displacement portion extends laterally back to the paddle axis.
10. A paddle device for human-powered water vehicles, characterized in that: include: a first paddle shaft segment defining a paddle axis and configured to perform a paddling motion when gripped by a user; a second oar shaft segment connected to the first oar shaft segment, extending from the oar axis, and configured to fit around the water vehicle when the user paddles forward; a paddle blade connected to a distal end of the second paddle shaft segment and aligned with the first paddle shaft segment; Therein, when the paddle axis is vertical and the paddle is viewed from a rear cross-section, the paddle axis intersects the paddle blade during a straight stroke.
11. The paddle device according to claim 10, characterized in that The best fit plane of the displacement part and the best fit plane of the blade are arranged in one of the following ways: coplanar; parallel; and The angle variation between them can be up to + / - 30 degrees.
12. The paddle device according to claim 11, characterized in that The yaw angle variation of the best fitting plane of the displacement part and the best fitting plane of the blade when the propeller axis is vertical can reach + / -30 degrees.
13. The paddle device according to claim 11, characterized in that The best fitting plane of the displacement part and the best fitting plane of the blade can vary in pitch angle by + / -30 degrees when the propeller axis is vertical.
14. The paddle device according to claim 10, characterized in that wherein the first paddle shaft segment has a shaped surface located within the first paddle shaft segment and indicating the orientation of the paddle by touch when the user grasps the paddle; and The surface is fixedly aligned with the paddle so that, given the orientation of the shaped surface location, a similar orientation of the paddle can be achieved.
15. The paddle device according to claim 10, characterized in that The first paddle shaft section has a front facing forward and a rear facing rearward, and when the paddle axis is basically vertical and the paddle is positioned to give the water vehicle a straight line stroke, the first gripping structure has a shaped surface extending laterally from the paddle axis, and the surface is fixedly aligned with the paddle blade.
16. The paddle device according to claim 10, characterized in that in, When viewed from the rear cross section, when the paddle axis is vertical and paddling in a straight line, the configuration of the first paddle shaft section and the paddle blades causes the paddle blades to extend laterally from both sides of the paddle axis; and the paddle blades further extend in a direction perpendicular to the lateral extension direction.
17. The paddle device according to claim 16, characterized in that The vertically extending length of the blade in the transverse extension direction is three times or more of the horizontal cross-sectional dimension DS of the first blade shaft segment.