Water Resistance Assembly

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefits of China application serial no. 202423271850.3, filed on Dec. 30, 2024, China application serial no. 202510417868.X, filed on Apr. 3, 2025, and China application serial no. 202522041540.0, filed on Sep. 23, 2025. The entirety of the above-mentioned patent applications is hereby incorporated by reference herein and made a part of this specification.

TECHNICAL FIELD

The invention relates to the technical field of sports equipment, in particular to a water resistance assembly for a rowing machine.

BACKGROUND

The rowing machine is a piece of fitness equipment that simulates rowing motion. During each exercise cycle, the upper limbs, lower limbs, waist, abdomen, and back will complete a complete contraction and extension in the process, which can achieve the effect of exercising the muscles of the whole body.

Traditional rowing machines feature a hollow container filled with water. During the pull phase of each exercise cycle, a drive cord is pulled to rotate the paddles within the water in the hollow container, generating momentum. The water flow will provide resistance when the paddles are rotated, but the water resistance of traditional rowing machines cannot be adjusted, making it impossible for users to adjust the force according to their own individual conditions.

SUMMARY

In order to solve the above problems, the embodiments of the present invention are as follows.

In one embodiment, a water resistance assembly for a rowing machine includes a water tank, a rotating shaft assembly, a paddle part, at least two blades, and a blade adjustment mechanism. The water tank comprises a first shell and a second shell. The first shell and the second shell are sealed with each other. The rotating shaft assembly passes through the first shell and the second shell. The rotating shaft assembly has a rotating shaft length direction. The paddle part has at least two rod portions. The rod portion has a rod length direction. The rod length direction is perpendicular to the rotating shaft length direction. The rotating shaft assembly passes through the paddle part. The at least two rod portions are arranged around the rotating shaft assembly. The rod portion has an end away from the rotating shaft assembly. The blade is arranged at the end of the rod portion. The rotating shaft assembly is adapted to drive the at least two blades to move around the rotating shaft assembly via the paddle part. The blade adjustment mechanism is connected to the blade. A portion of the blade adjustment mechanism is located inside the water tank. Another portion of the blade adjustment mechanism is located outside the water tank. The blade adjustment mechanism is suitable for moving the blade to a relative position on the corresponding rod portion along the corresponding rod length direction.

In one embodiment, the blade adjustment mechanism includes at least two sliding members, at least two pivot connecting rods and a sleeve member. The sliding member has an outer end and an inner end opposite the outer end. The pivot connecting rod has a first end and a second end opposite the first end. The sliding member is arranged in the corresponding rod portion. The outer end of the sliding member is connected to the corresponding blade. The inner end of the sliding member is pivotally connected to the first end of the corresponding pivot connecting rod. The second end of the pivot connecting rod is pivotally connected to the sleeve member. The rotating shaft assembly passes through the sleeve member. The sleeve member is suitable for moving along the rotating shaft length direction to drive the blade to move relative to the paddle part.

In one embodiment, the end of the rod portion has a clamping groove. The blade is inserted into the corresponding clamping groove and is suitable for moving in the clamping groove.

In one embodiment, a water resistance assembly for a rowing machine comprises a water tank, a rotating shaft assembly, a paddle part, at least two blades and a blade adjustment mechanism. The water tank comprises a first shell and a second shell. The first shell and the second shell are sealed with each other. The rotating shaft assembly passes through the first shell and the second shell. The rotating shaft assembly has a rotating shaft length direction. The paddle part has at least two rod portions, an outer support ring and at least two blade abutments. The rod portion has a rod length direction. The rod length direction is perpendicular to the rotating shaft length direction. The at least two rod portions are arranged around the rotating shaft assembly. The rod portion has an end away from the rotating shaft assembly. The outer support ring surrounds and connects the at least two ends. The blade abutment stands on the end along a direction parallel to the rotating shaft length direction. The blade is arranged at the end of the rod portion. The rotating shaft assembly is adapted to drive the at least two blades to move around the rotating shaft assembly in a first rotation direction via the paddle part. The blade abutment is arranged on the side of the blade facing away from the first rotation direction. The blade adjustment mechanism is connected to the blade. A portion of the blade adjustment mechanism is located inside the water tank, and another portion of the blade adjustment mechanism is located outside the water tank. The blade adjustment mechanism is suitable for moving the blade to a relative position on the corresponding rod portion along the corresponding rod length direction.

In one embodiment, the paddle part further comprises an inner ring plate. The inner ring plate surrounds and connects the at least two rod portions. The inner ring plate is arranged close to the rotating shaft assembly. The outer support ring is located at the circumference defined by the at least two rod portions. The outer support ring is separated from the inner ring plate.

The water resistance assembly of the present invention is provided with the water tank, the rotating shaft assembly, the paddle part, the at least two blades and the blade adjustment mechanism. The rotating shaft assembly passes through the water tank and the paddle part placed in the water tank. The blade is arranged at the end of the rod portion. The rotating shaft assembly is suitable for driving the blades to move around the rotating shaft assembly through the paddle part. The blade adjustment mechanism connects the blades. The blade adjustment mechanism is suitable for moving the blade to a relative position on the corresponding rod portion along the corresponding rod length direction, thereby achieving the effect of adjusting the water resistance in the water tank, so that the user can adjust the force according to his or her individual condition.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification. The drawings illustrate examples of the disclosure and, together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic structural diagram of the water resistance assembly according to an embodiment of the present invention.

FIG. 2 is a schematic view of the internal structure of the water resistance assembly according to an embodiment of the present invention.

FIG. 3 is an exploded schematic view of the blade adjustment mechanism of the water resistance assembly according to an embodiment of the present invention.

FIG. 4 is an exploded schematic view of the eccentric guide member and the knob of the water resistance assembly according to an embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view of the collar block of the water resistance assembly according to an embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view of the water resistance assembly according to an embodiment of the present invention.

FIG. 7 is a schematic cross-sectional view of the sleeve member of the water resistance assembly according to an embodiment of the present invention.

FIG. 8 is a schematic structural diagram of the paddle part of the water resistance assembly according to an embodiment of the present invention.

FIG. 9 is a schematic cross-sectional view of the water resistance assembly according to an embodiment of the present invention.

FIG. 10 is another schematic cross-sectional view of the water resistance assembly according to an embodiment of the present invention.

FIG. 11 is an exploded schematic view of the blade adjustment mechanism of the water resistance assembly according to an embodiment of the present invention.

FIG. 12 is a schematic structural diagram of the water resistance assembly according to an embodiment of the present invention.

FIG. 13 is a schematic view of the internal structure of the water resistance assembly according to an embodiment of the present invention.

FIG. 14 is an exploded schematic view of the blade adjustment mechanism of the water resistance assembly according to an embodiment of the present invention.

FIG. 15 is an exploded schematic view of the rotating shaft assembly of the water resistance assembly according to an embodiment of the present invention.

FIG. 16 a schematic structural diagram of the leading member of the water resistance assembly according to an embodiment of the present invention.

FIG. 17 is a schematic cross-sectional view of the water resistance assembly according to an embodiment of the present invention.

FIG. 18 is a schematic structural diagram of the paddle part of the water resistance assembly according to an embodiment of the present invention.

FIG. 19 is another schematic structural diagram of the paddle part of the water resistance assembly according to an embodiment of the present invention.

FIG. 20 is a schematic cross-sectional view of the paddle part of the water resistance assembly according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof, and in which are shown by way of illustration specific embodiments in which the disclosure may be practiced. In this regard, directional terminology, such as “top,” “bottom,” “front,” “back,” etc., is used with reference to the orientation of the Figure(s) being described. The components of the disclosure can be positioned in a number of different orientations. As such, directional terminology is used for purposes of illustration and is in no way limiting. On the other hand, the drawings are only schematic, and the sizes of components may be exaggerated for clarity. It is to be understood that other embodiments may be utilized, and structural changes may be made without departing from the scope of the disclosure. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless limited otherwise, the terms “connected,” “coupled,” and “mounted” and variations thereof herein are used broadly and encompass direct and indirect connections, couplings, and mountings.

Similarly, the terms “facing,” “faces” and variations thereof herein are used broadly and encompass direct and indirect facing, and “adjacent to” and variations thereof herein are used broadly and encompass directly and indirectly “adjacent to.” Therefore, the description of “A” component facing “B” component herein may contain the situations that “A” component directly faces “B” component, or one or more additional components are between “A” component and “B” component. Also, the description of “A” component “adjacent to” “B” component herein may contain the situations that “A” component “component is directly “adjacent to” “B” component or one or more additional components are between “A” component and “B” component. Accordingly, the drawings and descriptions will be regarded as illustrative in nature and not as restrictive.

Please refer to FIG. 1 to FIG. 12, the embodiments of the present invention provide the following technical solutions.

In one embodiment, referring to FIG. 1 to FIG. 8, a water resistance assembly for a rowing machine includes a water tank 1, a rotating shaft assembly 2, a paddle part 3, at least two blades 4, and a blade adjustment mechanism 5. The water tank 1 includes a first shell 11 and a second shell 12, which are sealed with each other. The rotating shaft assembly 2 passes through the first shell 11 and the second shell 12. The rotating shaft assembly 2 has a rotating shaft length direction. The paddle part 3 has at least two rod portions 31. The rod portion 31 has a rod length direction, which is perpendicular to the rotating shaft length direction. The at least two rod portions 31 are, for example, two opposing rod portions 31 along the rod length direction. The rotating shaft assembly 2 passes through the paddle part 3. The rod portion 31 has an end away from the rotating shaft assembly 2. The two rod portions 31 are arranged around the rotating shaft assembly 2. The two blades 4 are respectively arranged at the ends of the rod portions 31. The rotating shaft assembly 2 is suitable for driving the two blades 4 to move around the rotating shaft assembly 2 through the paddle part 3. The blade adjustment mechanism 5 connects the two blades 4. The blade adjustment mechanism 5 is suitable for moving the blade 4 to a relative position on the corresponding rod portion 31 along the corresponding rod length direction. When the positions of the blades 4 on the paddle part 3 are different, the distances between the blades 4 and the rotating shaft assembly 2 will also be different, and the torques generated by the blades 4 with the rotating shaft assembly 2 as the fulcrum will also be different, thereby achieving the effect of adjusting the water resistance in the water tank 1.

In one embodiment, the blade adjustment mechanism 5 includes two sliding members 51, two pivot connecting rods 52, and a sleeve member 53. The sliding member 51 has an outer end and an inner end opposite the outer end. The pivot connecting rod 52 has a first end and a second end opposite the first end. The sliding member 51 is disposed in the corresponding rod portion 31 of the paddle part 3. The outer end of the sliding member 51 is connected to the corresponding blade 4, and the inner end of the sliding member 51 is pivotally connected to the first end of the corresponding pivoting connecting rod 52. The second end of the pivot connecting rod 52 is pivotally connected to the sleeve member 53, and the rotating shaft assembly 2 passes through the sleeve member 53. The sleeve member 53 is suitable for moving along the rotating shaft length direction to drive the blade 4 to move relative to the paddle part 3. The above-mentioned pivoting method is completed by inserting the pin into the pin hole.

In one embodiment, the blade adjustment mechanism 5 also includes a collar block 54, a boss 541 and an eccentric guide member 55. The sleeve member 53 passes through the collar block 54, and the collar block 54 is suitable for rotating relative to the sleeve member 53. The boss 541 is fixedly arranged on the outer circumference of the collar block 54. The eccentric guide member 55 has an axis and an arc-shaped guide hole 551. The arc-shaped guide hole 551 surrounds the axis, and the boss 541 is located in the arc-shaped guide hole 551. The arc-shaped guide hole 551 has a starting end 5511 and a terminal end 5512. From the starting end 5511 to the terminal end 5512, the distance between the center line of the arc-shaped guide hole 551 and the axis gradually decreases. When the eccentric guide member 55 rotates about the axis 551, the arc-shaped guide hole 552 drives the boss 541 to move up and down, thereby driving the collar block 54 to move up and down, thereby driving the corresponding blade 4.

The blade adjustment mechanism 5 further includes a knob 56 having a shaft 561. The shaft 561 is fixedly connected to the axis of the eccentric guide member 55. The knob 56 is suitable for rotating the eccentric guide member 55 around the axis of the eccentric guide member 55. The knob 56 allows the user to conveniently adjust the desired force.

The blade adjustment mechanism 5 also includes a bearing ring 57. The collar block 54 has an inner surface that defines a receiving cavity 542. The sleeve member 53 is provided with a flange 531. The sleeve member 53 passes through the bearing ring 57. The bearing ring 57 is placed in the receiving cavity 542 and abuts against the flange 531. The collar block 54 can rotate relative to the sleeve member 53 to maintain the boss 541 of the collar block 54 able to move up and down in the same plane.

The sleeve member 53 also has a concave edge 532, and the blade adjustment mechanism 5 also includes an ring buckle 58, which is placed in the concave edge 532 and abuts against the collar block 54, thereby positioning the collar block 54 between the flange 531 and the concave edge 532 and allowing it to rotate relative to the sleeve member 53.

In one embodiment, the end of the rod portion 31 has a clamping groove 32, and the blade 4 is inserted into the corresponding clamping groove 32 and is suitable for moving in the clamping groove 32. This setting can not only change the torque generated by the blade 4, but also strengthen the structural strength of the blade 4 to resist water resistance.

The blade adjustment mechanism 5 also includes two guide members 59, which have a column body 591 and a guide groove 592. The column body 591 passes through the guide groove 592. One of the column body 591 and the guide groove 592 is provided in the corresponding sliding member 51. For example, the guide groove 592 is set at the sliding member 51. The other of the column body 591 and the guide groove 592 is provided in the corresponding rod portion 31 of the paddle part 3. For example, the column body 591 is provided at the rod portion 31 of the paddle part 3.

In one embodiment, referring to FIG. 9 to FIG. 12, the blade adjustment mechanism 6 is connected to the blade 4. A portion of the blade adjustment mechanism 6 is located inside water tank 1, while another portion of the blade adjustment mechanism 6 is located outside water tank 1. The blade adjustment mechanism 6 is adapted to move the blade 4 to a relative position on the corresponding rod portion 31 along the corresponding rod length direction.

The blade adjustment mechanism 6 includes at least two sliding members 61, at least two pivot connecting rods 62, and a sleeve member 63. The sliding member 61 has an outer end and an inner end opposite the outer end. The pivoting connecting rod 62 has a first end and a second end opposite the first end. The sliding member 61 is disposed in the corresponding rod portion 31. The outer end of the sliding member 61 is connected to the corresponding blade 4, and the inner end of the sliding member 61 is pivotally connected to the first end of the corresponding pivot connecting rod 62. The second end of the pivot connecting rod 62 is pivotally connected to the sleeve member 63. The rotating shaft assembly 2 passes through the sleeve member 63. The sleeve member 63 is suitable for moving along the rotating shaft length direction to drive the blade 4 to move relative to the paddle member 3.

The blade adjustment mechanism 6 also includes a collar block 64, a transmission member 65 and a rack 641. The sleeve member 63 passes through the collar block 64, and the collar block 64 is suitable for rotating relative to the sleeve member 63. The rack 641 is fixedly arranged on the outer peripheral surface of the collar block 64. The transmission member 65 is engaged with the rack 641, thereby driving the transmission member 65 to move the rack 641, so that the user can adjust the desired force.

In one embodiment, the blade adjustment mechanism 6 also includes a limiting column 70 and a limiting plate 71. The limiting plate 71 has a limiting hole 711. The limiting column 70 is perpendicular to the rotating shaft length direction and is located in the limiting hole 711. One of the limiting column 70 and the limiting plate 71 is fixedly set on the rack 641, and the other of the limiting column 70 and the limiting plate 71 is fixedly set on the water tank 1. The limiting column 70 and the limiting plate 71 limit the distance and direction of movement of the rack 641, so that it can only move within the range and direction limited by the limiting hole 711.

The transmission member 65 has a gear or a worm, which is meshed with the rack 641; alternatively, the blade adjustment mechanism 6 also includes a knob 66, which has a shaft, and the transmission member 65 has an axis. The shaft of the knob 66 is fixedly connected to the axis of the transmission member 65, and the knob 66 is suitable for rotating the transmission member 65 around the axis of the transmission member 65. When the gear is used as the transmission member 65, the water resistance in the water tank 1 can be greatly changed by rotating the knob 66 at a smaller angle, which is suitable for quickly adjusting the water resistance. If the worm is used as the transmission member 65, the water resistance in the water tank 1 can be changed less by rotating the knob 66 one circle, which is suitable for finely adjusting the water resistance.

In summary, the water resistance assembly of the present invention is provided with the water tank 1, the rotating shaft assembly 2, the paddle part 3, the at least two blades 4 and the blade adjustment mechanism 5. The rotating shaft assembly 2 passes through the water tank 1 and the paddle part 3 placed in the water tank 1. The blade 4 is arranged at the end of the rod portion 31. The rotating shaft assembly 2 is suitable for driving the blades 4 to move around the rotating shaft assembly 2 through the paddle part 3. The blade adjustment mechanism 5 connects the blades 4. The blade adjustment mechanism 5 is suitable for moving the blade 4 to a relative position on the corresponding rod portion 31 along the corresponding rod length direction, thereby achieving the effect of adjusting the water resistance in the water tank 1, so that the user can adjust the force according to his or her individual condition.

Please refer to FIG. 12 to FIG. 20, in one embodiment, a water resistance assembly for a rowing machine includes a water tank 1, a rotating shaft assembly 2, a paddle part 3, at least two blades 4, and a blade adjustment mechanism 5. The water tank 1 includes a first shell 11 and a second shell 12, which are sealed with each other. The rotating shaft assembly 2 passes through the first shell 11 and the second shell 12. The rotating shaft assembly 2 has a rotating shaft length direction. The paddle part 3 has at least two rod portions 31, an outer support ring 34 and at least two blade abutments 35. The rod portion 31 has a rod length direction. The rod length direction is perpendicular to the rotating shaft length direction. The at least two rod portions 31, for example six rod portions 31, are arranged around the rotating shaft assembly 2. The rod portion 31 has an end away from the rotating shaft assembly 2. The outer support ring 34 surrounds and connects the ends. The blade abutment 35 stands on the end along a direction parallel to the rotating shaft length direction. The at least two blades 4 are, for example, six blades, and the at least two blade abutments 35 are, for example, six blade abutments 35.

The blade 4 is arranged at the end of the rod portion 31. The rotating shaft assembly 2 is adapted to drive the at least two blades 4 to move around the rotating shaft assembly 2 in a first rotation direction via the paddle part 3. The blade abutment 35 is arranged on the side of the blade 4 facing away from the first rotation direction. The blade adjustment mechanism 5 is connected to the blade 4. A portion of the blade adjustment mechanism 5 is located inside the water tank 1, and another portion of the blade adjustment mechanism 5 is located outside the water tank. The blade adjustment mechanism 5 is suitable for moving the blade 4 to a relative position on the corresponding rod portion 31 along the corresponding rod length direction. In addition, one end of the rotating shaft assembly 2 is connected to a resetting device, which is suitable for resetting the pull rope set inside the resetting device when the user uses the resetting device.

When the positions of the blade 4 each on the paddle part 3 are different, the distances each between the blade 4 and the rotating shaft assembly 2 are also different, and the torques each generated by the blade 4 with the rotating shaft assembly 2 as the fulcrum are also different, thereby achieving the effect of adjusting the water resistance in the water tank 1. The blade 4 is supported by the outer support ring 34 and the blade abutment 35 when the blade 4 rotates around the rotating shaft assembly 2, thereby achieving the effect of improving the overall structural strength of the device.

In one embodiment, the rotating shaft assembly 2 comprises an adjusting rotating shaft 21, a resetting rotating shaft 22, a resetting transmission piece 23 and a leading member 24. The adjusting rotating shaft 21 comprises an upper end, a lower end and a connecting portion located between the upper end and the lower end. The upper end of the adjusting rotating shaft 2 passes through the first shell 11. An outer wall of the connecting portion of the adjusting rotating shaft 21 is surrounded by an external thread. An end of the resetting rotating shaft 22 away from the paddle part 3 passes through the second shell 12. The adjusting rotating shaft 21 and the resetting rotating shaft 22 are coaxially arranged along the rotating shaft length direction.

The resetting transmission piece 23 is sleeved on an outer wall of an end of the resetting rotating shaft 22 close to the paddle part 3. The leading member 24 has a fixing portion 241 and at least one limiting portion 242, for example two limiting portion 242. The limiting portion 242 is located on a side of the fixing portion 241 away from the resetting transmission piece 23. The limiting portion 242 and the fixing portion 241 are inserted into each other. The limiting portion 242 is arranged along the rotating shaft length direction. The lower end of the adjusting rotating shaft 21 passes through the fixing portion 241. An end of the limiting portion 242 away from the fixing portion 241 contacts an inner wall of the water tank 1.

In one embodiment, the paddle part 3 further comprises an inner ring plate 33. The inner ring plate 33 surrounds and connects the at least two rod portions 31. The inner ring plate 33 is arranged close to the rotating shaft assembly 2. The outer support ring 34 is located at the circumference defined by the at least two rod portions 31. The outer support ring 34 is separated from the inner ring plate 33. The inner ring plate 33 is connected to the rod portion 31 to improve the structural strength of the rod portion 31. The inner ring plate 33 is separated from the outer support ring 34 to facilitate the circulation of water in the water tank 1. The end of the rod portion 31 has a clamping groove 32. The blade 4 is inserted into the corresponding clamping groove 32 and is suitable for moving in the clamping groove 32. The blade adjustment mechanism 5 further includes at least two guide members, for example six guide members. The guide member has a guide groove 311. The guide groove 311 is provided on the rod portion 31. The six rod portions 31 are arranged around the rotating shaft assembly 2 and are provided with six groups of twelve guide grooves 311. The guide groove 311 is suitable for limiting the movement range of the corresponding blade 4 along the rod length direction.

In one embodiment, the guide member has a column body. The blade adjustment mechanism 5 includes at least two sliding members 51 and at least two pivot connecting rods 52. The at least two sliding members 51 are, for example, six sliding members 51, and the at least two pivot connecting rods 52 are, for example, six pivot connecting rods 52. The sliding member 51 has an outer end and an inner end opposite the outer end. The sliding member 51 is arranged in the corresponding rod portion 31. The outer end of the sliding member 51 is connected to the corresponding blade 4. The pivot connecting rod 52 has a first end and a second end opposite the first end. The inner end of the sliding member 51 is pivotally connected to the first end of the corresponding pivot connecting rod 51 by the column body, and the column body passes through the guide groove 311, so that the guide groove 311 limits the movement range of the sliding member 51 and the pivot connecting rod 52.

The blade adjustment mechanism 5 includes a sleeve member 53. The second end of the pivot connecting rod 52 is pivotally connected to the sleeve member 53. The sleeve member 53 is provided with an internal thread along the rotating shaft length direction. The adjusting rotating shaft 21 passes through the sleeve member 53. The internal thread of the sleeve member 53 and the external thread of the adjusting rotating shaft 21 engage together. The sleeve member 53 is set on the limiting portion. The sleeve member 53 is suitable for moving along the rotating shaft length direction to drive the blade 4 to move relative to the rod portion 31. Therefore, the limiting portion 242 restricts the moving direction of the sleeve member 53, so that the sleeve member 53 must move along the rotating shaft length direction.

In one embodiment, a connecting rod angle is formed between the first end and the second end of the pivot connecting rod 52. The connecting rod angle is an obtuse angle to improve the strength of the pivot connecting rod 52. The blade adjustment mechanism 5 further includes a knob 80 and a transmission mechanism 82. The knob 80 has a shaft and is disposed outside the water tank 1. The transmission mechanism 82 has a transmission member and an output member. The transmission member of the transmission mechanism 5 is connected to the shaft of the knob 80, and the output member of the transmission mechanism 82 is disposed at the upper end of the adjusting rotating shaft 21. The transmission member and output member of the transmission mechanism 82 can be a large gear and a small gear, so that when the knob 80 rotates around the shaft, the transmission mechanism 82 drives the adjusting rotating shaft 21 to rotate, and then the sleeve member 53 moves up and down along the adjusting rotating shaft 21 to link the corresponding blade 4.

The paddle part 3 further comprises a transmission groove 36. The transmission groove 36 is provided on a side of the paddle part 3 close to the resetting rotating shaft 22. The resetting transmission piece 23 is arranged inside the transmission groove 36. Therefore, when the blade 4 rotates, the rotation angle is transmitted to the resetting device through the transmission groove 36, the resetting transmission piece 23 and the resetting rotating shaft 22.

To sum up, the water resistance assembly of the present invention is provided with the water tank 1, the rotating shaft assembly 2, the paddle part 3, the at least two blades 4 and the blade adjustment mechanism 5. The rotating shaft assembly 2 passes through the water tank 1. The paddle part 3 is placed in the water tank 1. The blade 4 is provided at the end of the rod portion 31. The rotating shaft assembly 2 is suitable for driving the blade 4 to move around the rotating shaft assembly 2 through the paddle part 3. The outer support ring 34 and the blade abutment 35 support the blade 4 when the blade 4 rotates around the rotating shaft assembly 2, thereby achieving the effect of improving the overall structural strength of the device. The rod portion 31 is connected by the inner ring plate 33, thereby increasing the stiffness between the two rod portions 31 and reducing stress deformation.

The foregoing description of the preferred embodiments of the disclosure has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure to the precise form or to exemplary embodiments disclosed. Accordingly, the foregoing description should be regarded as illustrative rather than restrictive. Obviously, many modifications and variations will be apparent to practitioners skilled in this art. The embodiments are chosen and described in order to best explain the principles of the disclosure and its best mode practical application, thereby enabling persons skilled in the art in the art to understand the disclosure for various embodiments and with various modifications as are suited to the particular use or implementation contemplated. It is intended that the scope of the disclosure be defined by the claims appended hereto and their equivalents in which all terms are meant in their broadest reasonable sense unless otherwise indicated. Therefore, the term “the disclosure”, “the present disclosure” or the like does not necessarily limit the claim scope to a specific embodiment, and the reference to particularly preferred exemplary embodiments of the disclosure does not imply a limitation on the disclosure, and no such limitation is to be inferred. The disclosure is limited only by the spirit and scope of the appended claims. Moreover, these claims may refer to use “first,” “second,” etc. following with noun or element. Such terms should be understood as a nomenclature and should not be construed as giving the limitation on the number of the elements modified by such nomenclature unless specific number has been given. The abstract of the disclosure is provided to comply with the rules requiring an abstract, which will allow a searcher to quickly ascertain the subject matter of the technical disclosure of any patent issued from this disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. Any advantages and benefits described may not apply to all embodiments of the disclosure. It should be appreciated that variations may be made in the embodiments described by persons skilled in the art without departing from the scope of the disclosure as defined by the following claims. Moreover, no element and component in the present disclosure is intended to be dedicated to the public regardless of whether the element or component is explicitly recited in the following claims.

Having described at least one of the embodiments of the claimed invention with reference to the accompanying drawings, it will be apparent to those skills that the invention is not limited to those precise embodiments, and that various modifications and variations can be made in the presently disclosed system without departing from the scope or spirit of the invention.