Pedal structure and kayak

Abstract

The utility model discloses a pedal structure and a canoe, and belongs to the technical field of power structures of canoes. The pedal structure comprises a transmission structure, a first pedal connecting rod assembly and a second pedal connecting rod assembly, wherein the first pedal connecting rod assembly and the second pedal connecting rod assembly are installed on the transmission structure. The transmission structure comprises a first rotating wheel and a second rotating wheel which are rotationally installed. Webs are mounted on the first rotating wheel and the second rotating wheel. Each web piece is provided with an installation end and a swing end, and a notch structure located on one side of the installation end is arranged on each web piece. The gap structures are formed in the mounting ends of the flipper pieces, and when the swing ends of the flipper pieces paddling, water flow rapidly flows at the gap structures, so that resistance to the whole flipper pieces is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power structures of kayaks, in particular to a pedal structure and a kayak. Background Art

[0002] Kayaking as an exercise program has been brought into the lives of more and more people. People can not only exercise their bodies through kayaking, but also enjoy the beautiful scenery of the lake. Some kayaks can also be used for fishing. In order to facilitate the control of the kayak and save the operator's arm strength, a foot-operated paddle blade structure is installed in front of the kayak seat, and the foot-operated paddle blade structure is used to achieve paddling to drive the kayak to move.

[0003] For example, Chinese patents CN205952267U and CN11055986A both disclose a pedal-type paddle structure, which utilizes reciprocating pedaling of both feet to realize reciprocating swinging of the paddle to achieve paddling action. However, the paddle structure used in the above-mentioned prior art has great resistance during the paddling process. In the process of driving the paddle to swing reciprocally, the paddle is affected by the resistance of the water flow, resulting in a slower swinging speed, which in turn consumes more human energy. Utility Model Content

[0004] 1. Technical issues

[0005] The utility model aims to provide a pedal structure and a kayak, which solve the problem that the paddle blades used in the existing pedal blade structure have large water resistance during the swinging process, resulting in a slow swinging speed and consumption of physical strength.

[0006] (II) Technical solution

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A pedal structure includes a transmission structure and a first pedal connecting rod assembly and a second pedal connecting rod assembly installed on the transmission structure. The transmission structure includes a first rotating wheel and a second rotating wheel that are rotatably installed. The first rotating wheel and the second rotating wheel are both installed with a paddle, and the paddle has a mounting end and a swing end. The paddle is provided with a notch structure located on one side of the mounting end.

[0009] Preferably, the fin comprises a first surface and a second surface, and a distance between the first surface and the second surface gradually decreases from the first side to the second side.

[0010] Preferably, the notch structure is arranged on the second side of the fin.

[0011] Preferably, the swing end of the paddle is provided with an arc structure extending from the second side to the first side.

[0012] Preferably, connecting blocks are provided at intervals at the mounting ends of the paddles, mounting blocks engaged with the connecting blocks are provided on the first rotating wheel and the second rotating wheel, and fasteners passing through the connecting blocks are provided on the mounting blocks; a plug-in hole extending from the mounting end to the swing end is provided on the first side of the paddle, and a plug-in rod for inserting into the plug-in hole is provided on the first rotating wheel and the second rotating wheel.

[0013] Preferably, the transmission structure includes a main frame and a rotating shaft arranged on the main frame, a first rotating disk and a second rotating disk are rotatably mounted on the rotating shaft, and the first rotating disk and the second rotating disk are both provided with a plurality of adjustment holes evenly distributed along the circumferential direction; the first foot-operated connecting rod assembly includes a first foot-operated rod, a first foot pedal is rotatably mounted on one end of the first foot-operated rod, and the other end is rotatably mounted on the first rotating disk; the second foot-operated connecting rod assembly includes a second foot-operated rod, a second foot pedal is rotatably mounted on one end of the second foot-operated rod, and the other end is rotatably mounted on the second rotating disk; the first foot-operated rod and the second foot-operated rod are both provided with a limit pin that cooperates with the adjustment hole, and an adjustment structure for driving the limit pin to slide out of the adjustment hole.

[0014] Preferably, the adjustment structure includes an adjustment rod that slides relative to the first foot rod and the second foot rod, and the lower end of the adjustment rod is provided with a wedge-shaped surface for pushing the limit pin to slide out of the adjustment hole; it also includes a first spring and a second spring, the first spring is used to push the adjustment rod to reset, and the second spring is used to push the limit pin to insert into the adjustment hole.

[0015] Preferably, the first rotating disk and the second rotating disk both have a right side arc surface and a left side arc surface that are oppositely arranged; a guide wheel is rotatably mounted on the main frame, and a transmission belt is sleeved on the guide wheel, one end of the transmission belt passes through the left side arc surface of the first rotating disk and is fixed on the first rotating disk, and the other end of the transmission belt passes through the right side arc surface of the second rotating disk and is fixed on the second rotating disk.

[0016] Preferably, the first rotating wheel is provided with a first toothed disc, the second rotating wheel is provided with a second toothed disc, the first toothed disc is connected to a first rack belt, and the second toothed disc is connected to a second rack belt; the first rack belt is connected to the right arc surface of the first rotating disc and the second rotating disc, and the second rack belt is connected to the left arc surface of the first rotating disc and the second rotating disc.

[0017] The utility model also provides a kayak, comprising the pedal structure as described above.

[0018] By providing a notch structure at the mounting end of the paddle, when paddling at the swinging end of the paddle, water flows quickly at the notch structure to reduce the resistance formed on the entire paddle, so that the resistance of the transmission structure driven by stepping on the first pedal connecting rod assembly and the second pedal connecting rod assembly is reduced, so that the first rotating wheel and the second rotating wheel drive the paddle to swing back and forth quickly, thereby accelerating the swinging speed and saving human energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the explosion structure of an embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0022] Figure 4 It is a side view structural schematic diagram of an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of installing a fin on the first rotating wheel or the second rotating wheel in an embodiment of the utility model;

[0024] Figure 6 for Figure 5 A schematic cross-sectional structure diagram of ;

[0025] Figure 7 This is a schematic diagram of the structure of the fin in the embodiment of the utility model;

[0026] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure.

[0027] exist Figures 1 to 8 In the figure, the corresponding relationship between the component names or lines and the figure numbers is as follows:

[0028] Transmission structure 1, main skeleton 101, rotating shaft 102, first rotating disk 103, second rotating disk 104, adjusting hole 105, right arc surface 106, left arc surface 107, guide wheel 108, transmission belt 109, first toothed disk 110, second toothed disk 111, first rack belt 112, second rack belt 113, first pedal connecting rod assembly 2, first pedal rod 21, first foot pedal 22, second pedal connecting rod assembly 3, second pedal rod 31, second foot pedal 32, first rotating wheel 4, second rotating wheel 5, paddle 6, notch structure 60, first surface 61, second surface 62, arc structure 63, connecting block 64, plug hole 65, mounting block 7, plug rod 8, limit pin 9, adjusting rod 10. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] See also Figure 1-Figure 4 As shown, in the embodiment of the utility model, a pedal structure is proposed, which is installed on the kayak when in use, so as to realize the kayak being pushed and moved on the water flow by the driving force generated by the reciprocating pedaling of the two feet. The specific pedal structure includes a transmission structure 1 and a first pedal connecting rod assembly 2 and a second pedal connecting rod assembly 3 installed on the transmission structure 1. The transmission structure 1 includes a first rotating wheel 4 and a second rotating wheel 5 which are rotatably installed. The transmission structure 1 is driven to reciprocate by the first pedal connecting rod assembly 2 and the second pedal connecting rod assembly 3, and the first rotating wheel 4 and the second rotating wheel 5 are swung in opposite directions at the same time.

[0031] Paddles 6 are installed on both the first rotating wheel 4 and the second rotating wheel 5. The two paddles 6 are driven to swing back and forth in opposite directions to generate power to drive the kayak forward. The power comes from water resistance, but when the water resistance is too large, the paddles 6 cannot swing quickly, resulting in a slow kayak speed and a large consumption of human energy. In order to improve the water resistance of the paddles 6 and not affect the driving force, the paddles 6 have a mounting end and a swinging end. The paddles 6 are provided with a notch structure 60 located on one side of the mounting end. The notch structure 60 can be V-shaped or in other shapes. The mounting end enables the paddles 6 to be installed or removed relative to the first rotating wheel 4 and the second rotating wheel 5, while the swinging end is mainly used for paddling to form a driving force. During paddling, water flows along the surface of the swinging end to form water resistance. Therefore, after the notch structure 60 is opened at the mounting end, the water flowing on the surface can flow quickly without forming a large resistance at the mounting end, and the water resistance of the mounting end is reduced without affecting the driving force formed at the swinging end, so that the water resistance of the entire paddle 6 is reduced, the reciprocating swinging speed of the paddle 6 is accelerated, and human strength is reduced.

[0032] Among them, Figure 2-Figure 4 As shown, the transmission structure 1 includes a main frame 101 and a rotating shaft 102 arranged on the main frame 101, and a first rotating disk 103 and a second rotating disk 104 are rotatably mounted on the rotating shaft 102. At the same time, the first rotating disk 103 and the second rotating disk 104 both have a right side arc surface 106 and a left side arc surface 107 arranged oppositely, and the right side arc surface 106 of the first rotating disk 103 and the right side arc surface 106 of the second rotating disk 104 are located on the same side, and the left side arc surface 107 of the first rotating disk 103 and the left side arc surface 107 of the second rotating disk 104 are located on the same side.

[0033] In addition, a guide wheel 108 is rotatably installed on the main frame 101, and a transmission belt 109 is sleeved on the guide wheel 108. One end of the transmission belt 109 passes through the left arc surface 107 of the first rotating disk 103 and is fixed on the first rotating disk 103, and the other end of the transmission belt 109 passes through the right arc surface 106 of the second rotating disk 104 and is fixed on the second rotating disk 104. The transmission belt 109 is used to form a reset force when the first rotating disk 103 and the second rotating disk 104 rotate in opposite directions.

[0034] Meanwhile, a first toothed disc 110 is provided on the first rotating wheel 4, and a second toothed disc 111 is provided on the second rotating wheel 5. A first rack belt 112 is connected to the first toothed disc 110, and a second rack belt 113 is connected to the second toothed disc 111. The first rack belt 112 is connected to the right arc surface 106 of the first rotating disc 103 and the second rotating disc 104, and the second rack belt 113 is connected to the left arc surface 107 of the first rotating disc 103 and the second rotating disc 104. When the first rotating disc 103 and the second rotating disc 104 rotate in opposite directions, the first rack belt 112 and the second rack belt 113 move back and forth, so that the first rack belt 112 cooperates with the first toothed disc 110 to make the first rotating wheel 4 reciprocate. The second rack belt 113 cooperates with the second toothed disc 111 to make the second rotating wheel 5 reciprocate. The above structure enables the first rotating wheel 4 and the second rotating wheel 5 to rotate in opposite directions at the same time, thereby achieving the reciprocating swing of the paddle 6 in opposite directions.

[0035] The first rack belt 112 includes a first chain meshed with the first toothed disc 110, and one end of the first chain is provided with a first connecting rope passing through the right side arc surface 106 of the first rotating disc 103 and fixed on the first rotating disc 103. The other end of the first chain is provided with a second connecting rope passing through the right side arc surface 106 of the second rotating disc 104 and fixed on the second rotating disc 104. The second rack belt 113 includes a second chain meshed with the second toothed disc 111, and one end of the second chain is provided with a third connecting rope passing through the left side arc surface 107 of the first rotating disc 103 and fixed on the first rotating disc 103, and the other end of the second chain is provided with a fourth connecting rope passing through the left side arc surface 107 of the second rotating disc 104 and fixed on the second rotating disc 104. Therefore, when the first rotating disc 103 and the second rotating disc 104 rotate in opposite directions relative to each other, the first rack belt 112 and the second rack belt 113 can realize stable reciprocating swinging motion.

[0036] The rotating shaft 102 of the first rotating disk 103 and the second rotating disk 104 is coaxial with the first axis, the rotating shaft 102 of the first rotating wheel 4 and the second rotating wheel 5 is coaxial with the second axis, and the first axis and the second axis are vertical in space.

[0037] Of course, in addition to adopting the above-mentioned transmission structure 1, an existing mature transmission structure 1 can also be adopted.

[0038] Specifically, Figure 2 , Figure 3 As shown, the first pedal link assembly 2 is mounted on the first rotating disk 103, and the second pedal link assembly 3 is mounted on the second rotating disk 104. Specifically, a plurality of adjustment holes 105 uniformly distributed along the circumferential direction are provided on the first rotating disk 103 and the second rotating disk 104, and the first pedal link assembly 2 includes a first pedal rod 21. A first pedal board 22 is rotatably mounted on one end of the first pedal rod 21, and the other end is rotatably mounted on the first rotating disk 103.

[0039] The second pedal connecting rod assembly 3 includes a second pedal rod 31, one end of which is rotatably mounted with a second foot pedal 32, and the other end is rotatably mounted on the second rotating disk 104. By stepping on the first foot pedal 22 and the second foot pedal 32 with both feet, the first pedal rod 21 and the second pedal rod 31 swing back and forth, so as to drive the first rotating disk 103 and the second rotating disk 104 to reciprocate.

[0040] In order to adapt to users with different leg lengths, the angles of the first pedal rod 21 and the second pedal rod 31 can be adjusted to the best force point, and can be adjusted and locked relative to multiple adjustment holes 105. The first pedal rod 21 and the second pedal rod 31 are both provided with a limit pin 9 that matches the adjustment hole 105, and an adjustment structure for driving the limit pin 9 to slide out of the adjustment hole 105. When the limit pin 9 matches the adjustment holes 105 at different positions, the angle of the first pedal rod 21 relative to the first rotating disk 103 and the angle of the second pedal rod 31 relative to the second rotating disk 104 can be adjusted.

[0041] The adjustment structure is used to adjust the limit pin 9 to slide out of the adjustment hole 105 or to insert into the adjustment hole 105. Specifically, the adjustment structure is an adjustment rod 10 that is slidably matched with the first pedal rod 21 and the second pedal rod 31. The lower end of the adjustment rod 10 is provided with a wedge-shaped surface for pushing the limit pin 9 to slide out of the adjustment hole 105. The wedge-shaped surface is the inclined surface of the oblique slide groove. The limit pin 9 is provided with a sliding shaft that is slidably matched with the oblique slide groove. When the adjustment rod 10 is pushed downward to slide, the wedge-shaped surface is used to push the limit pin 9 to slide inward and escape from the adjustment hole 105, so as to facilitate the adjustment of the angle of the first pedal rod 21 relative to the first rotating disk 103.

[0042] The second pedal rod 31 adjusts the angle relative to the second rotating disk 104. Specifically, the adjustment structure further includes a first spring and a second spring, wherein the first spring is used to push the adjustment rod 10 to reset, and the second spring is used to push the limit pin 9 to insert into the adjustment hole 105. The first spring is used to realize the reset of the adjustment rod 10 after sliding, so that the second spring can push the limit pin 9 to insert into the corresponding adjustment hole 105.

[0043] Specifically, Figure 8 As shown, the paddle 6 includes a first surface 61 and a second surface 62. The distance between the first surface 61 and the second surface 62 gradually decreases from the first side to the second side, so that the first surface 61 and the second surface 62 are arc-shaped structures, which makes it easier for water to flow from the surface, thereby increasing the paddling speed and reducing water resistance.

[0044] Among them, the notch structure 60 is arranged on the second side of the paddle 6, so that the water flowing from the surface can quickly flow out from the notch structure 60 when being drained by the surface, thereby accelerating the reciprocating swinging speed of the paddle 6, reducing the swinging resistance of the paddle 6, and reducing human consumption.

[0045] At the same time, an arc structure 63 extending from the second side to the first side is provided at the swinging end of the paddle 6, so as to further accelerate the paddling action of the swinging end of the paddle 6 and realize water diversion.

[0046] After the paddle 6 is installed on the first rotating wheel 4 and the second rotating wheel 5, it needs to withstand the reaction force of the water flow, so the paddle 6 needs to have stable bearing strength and installation stability. Figure 5-Figure 7 As shown, connecting blocks 64 are provided at intervals at the mounting ends of the paddle 6, and mounting blocks 7 engaged with the connecting blocks 64 are provided on the first rotating wheel 4 and the second rotating wheel 5, and fasteners passing through the connecting blocks 64 are provided on the mounting blocks 7. At the same time, a plug-in hole 65 extending from the mounting end to the swing end is provided on the first side of the paddle 6, and a plug-in rod 8 for inserting into the plug-in hole 65 is provided on the first rotating wheel 4 and the second rotating wheel 5. By inserting the plug-in rod 8 into the plug-in hole 65, the first rotating wheel 4 and the second rotating wheel 5 can have good bearing strength during the stable reciprocating swing of the paddle 6, and at the same time, the connecting block 64 and the mounting block 7 are fixed by fasteners to achieve a quick fixed connection under the first rotating wheel 4 and the second rotating wheel 5.

[0047] A gap is formed between the two spaced connection blocks 64 to facilitate avoiding the corresponding first toothed disc 110 and second toothed disc 111 .

[0048] Specifically, when using the pedal structure in this embodiment, after the user steps on the first foot pedal 22 and the second foot pedal 32 with both feet, the first foot pedal 21 drives the first rotating disk 103, and the second foot pedal 31 drives the second rotating disk 104 to achieve reverse reciprocating rotation, so that the first rotating wheel 4 and the second rotating wheel 5 reciprocate in opposite directions, and the paddles 6 respectively installed on the first rotating wheel 4 and the second rotating wheel 5 achieve reciprocating swinging and paddling to form a power that drives the kayak to slide.

[0049] On the basis of the above embodiments, the utility model further proposes a kayak, on which the pedal structure in the above embodiments is installed to generate power to drive the kayak to move on the water surface.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0052] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A pedal structure, characterized in that: It includes a transmission structure and a first pedal connecting rod assembly and a second pedal connecting rod assembly installed on the transmission structure. The transmission structure includes a first rotating wheel and a second rotating wheel that are rotatably installed. The first rotating wheel and the second rotating wheel are both installed with a paddle, and the paddle has a mounting end and a swinging end. The paddle is provided with a notch structure located on one side of the mounting end.

2. A pedal structure according to claim 1, characterized in that: The fin comprises a first surface and a second surface, and the distance between the first surface and the second surface gradually decreases from the first side to the second side.

3. A footrest structure according to claim 2, characterized in that: The notch structure is arranged on the second side of the fin.

4. A pedal structure according to claim 2, characterized in that: The swing end of the paddle is provided with an arc structure extending from the second side to the first side.

5. A footrest structure according to any one of claims 2 to 4, characterized in that: The mounting ends of the paddles are provided with connecting blocks at intervals, the first rotating wheel and the second rotating wheel are both provided with mounting blocks engaged with the connecting blocks, and the mounting blocks are provided with fasteners passing through the connecting blocks; A plug-in hole extending from the mounting end to the swing end is provided on the first side of the paddle, and a plug-in rod for inserting into the plug-in hole is provided on the first rotating wheel and the second rotating wheel.

6. A footrest structure according to any one of claims 1 to 4, characterized in that: The transmission structure comprises a main frame and a rotating shaft arranged on the main frame, a first rotating disk and a second rotating disk are rotatably mounted on the rotating shaft, and a plurality of adjustment holes uniformly distributed along the circumferential direction are opened on the first rotating disk and the second rotating disk; The first pedal connecting rod assembly comprises a first pedal rod, one end of which is rotatably mounted with a first pedal, and the other end of which is rotatably mounted on the first rotating disk; The second pedal connecting rod assembly comprises a second pedal rod, one end of which is rotatably mounted with a second pedal, and the other end of which is rotatably mounted on the second rotating disk; The first pedal rod and the second pedal rod are both provided with a limit pin matched with the adjustment hole, and an adjustment structure for driving the limit pin to slide out of the adjustment hole.

7. A pedal structure according to claim 6, characterized in that: The adjustment structure comprises an adjustment rod that is slidably matched with the first pedal rod and the second pedal rod, and a wedge-shaped surface is provided at the lower end of the adjustment rod for pushing the limit pin to slide out of the adjustment hole; It also includes a first spring and a second spring, wherein the first spring is used to push the adjusting rod to reset, and the second spring is used to push the limiting pin to insert into the adjusting hole.

8. A pedal structure according to claim 6, characterized in that: The first rotating disk and the second rotating disk both have a right side arc surface and a left side arc surface which are arranged opposite to each other; A guide wheel is rotatably mounted on the main frame, and a transmission belt is sleeved on the guide wheel. One end of the transmission belt passes through the left arc surface of the first rotating disk and is fixed on the first rotating disk, and the other end of the transmission belt passes through the right arc surface of the second rotating disk and is fixed on the second rotating disk.

9. A footrest structure according to claim 8, characterized in that: The first rotating wheel is provided with a first toothed disc, the second rotating wheel is provided with a second toothed disc, the first toothed disc is connected to a first rack belt, and the second toothed disc is connected to a second rack belt; The first rack belt is connected to the right arc surface of the first rotating disk and the second rotating disk, and the second rack belt is connected to the left arc surface of the first rotating disk and the second rotating disk.

10. A kayak, characterized in that: It comprises a pedal structure as described in any one of claims 1-9.

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