Improved stepless resistance adjustment structure for water resistance tank

Abstract

An improved stepless resistance adjustment structure for a water resistance tank, comprising: a water tank main body (10), in which a water storage tub (20) is provided to divide the interior space of the water tank main body (10) into a water storage cavity (30) and a resistance cavity (40), the water storage tub (20) being provided with a water inlet channel (14) at a higher position, the bottom of the water storage tub (20) protruding upwards to form an overflow wall (60) that extends into the water storage cavity (30), an overflow channel (61) leading to the resistance cavity (40) being formed on the inner side of the overflow wall (60), and an overflow port (62) being provided to pass through the part of an edge wall (63) of the overflow wall (60) located within the water storage cavity (30); and an adjustment member (50), which is rotatably arranged within the water storage cavity (30), is located on a side of the overflow wall (60), and comprises a shielding structure (70) for shielding the overflow port (62), an overflow lip for an outflow of a liquid from the water storage cavity (30) being formed between the top of the shielding structure (70) and the overflow port (62).

Description

An improved water resistance box resistance stepless adjustment structure Technical Field

[0001] This utility model relates to the technical field of water resistance box structure, and in particular to an improved water resistance box resistance stepless adjustment structure. Background Technology

[0002] Water resistance systems, as an advanced resistance generation mechanism, have been widely used in fitness equipment, especially in rowing machines (also known as rowing paddle machines, rowing boat machines, etc.). These systems precisely control resistance by adjusting the water volume and the rotational speed of the paddles or flywheel, thus providing a workout effect that closely resembles the experience of real rowing. Water resistance rowing machines, due to their unique simulation technology, can reproduce the visual, auditory, and tactile sensations of rowing in water, and have quickly gained market favor.

[0003] The advantage of a water resistance system lies in its ability to adjust resistance in real time according to user needs. Through dynamic changes in the liquid and control of the wheel speed, it effectively stimulates more than 80% of the body's muscle groups, with a particular focus on strengthening the leg, waist, upper limb, chest, and back muscles. Each complete cycle ensures that muscles receive a comprehensive aerobic workout, improving cardiovascular function and endurance.

[0004] However, despite the significant fitness benefits of water resistance systems, existing systems still have certain issues with resistance adjustment:

[0005] 1. Traditional water resistance systems typically require adjusting the resistance level by increasing or decreasing the amount of liquid in the container. This physical operation is time-consuming and difficult to perform during exercise, limiting the user's ability to flexibly adjust the resistance according to their individual condition or training goals.

[0006] 2. Existing systems often fail to achieve smooth, stepless adjustment within a certain range, which means that users may encounter discontinuous adjustment issues in certain resistance ranges, affecting the exercise experience.

[0007] In view of this, the inventors have designed an improved water resistance box resistance stepless adjustment structure, which leads to this invention. Utility Model Content

[0008] To solve the above problems, the technical solution of this utility model is as follows:

[0009] An improved water resistance box resistance stepless adjustment structure includes:

[0010] The water tank body has a water storage tank inside, which divides the inner space of the water tank body into a water storage cavity located inside the water storage tank and a resistance cavity located between the water storage tank and the water tank body. The side wall of the water storage tank has a water inlet channel at a high position. The bottom of the water storage tank protrudes upward to form an overflow wall that penetrates into the water outlet cavity. An overflow channel connecting the resistance cavity is formed on the inner side of the overflow wall. An overflow port is provided through the part of the side wall of the overflow wall located in the water outlet cavity.

[0011] An adjusting component, rotatably disposed within the water storage cavity and located on one side of the overflow wall, includes a shielding structure for shielding the overflow port, wherein the top of the shielding structure and the overflow port form an overflow port for the liquid in the water storage cavity to flow out.

[0012] The shielding structure is configured such that the height of the lowest position of the overflow port changes linearly as its main body rotates.

[0013] Preferably, the overflow wall includes a pair of side walls arranged in parallel to each other and a U-shaped wall connecting the two side walls on the same side, with the overflow outlet formed on the side of the two side walls away from the U-shaped wall.

[0014] Preferably, the center of the U-shaped wall is positioned opposite the center of the water storage tank to form a through-axis channel running vertically through the tank.

[0015] Preferably, the top of the U-shaped wall and side wall extends to a position flush with the upper edge of the water storage tank.

[0016] Preferably, the adjusting component further includes a connecting shaft and a knob located at the top of the connecting shaft to control the rotation of the connecting shaft, and the shielding structure is arranged around the outer periphery of the connecting shaft.

[0017] Preferably, the shielding structure includes a fan-shaped base plate and a shielding plate extending upward around the circular periphery of the base plate. The top of the shielding plate is a spiral shape with increasing height so that the shielding plates at different positions and the overflow port form overflow edges with different height positions.

[0018] Preferably, the highest position of the shield is provided with a horizontal section of consistent height so that the shield opposite the horizontal section forms the initial end with the largest overlapping shielding area with the overflow port.

[0019] Preferably, a connecting piece is provided between the baffle plate and the connecting shaft, and the highest position of any of the connecting pieces coincides with the top of the baffle plate.

[0020] Preferably, a rotating protrusion is provided at the bottom of the water storage tank and on the side of the overflow port, and a rotating hole that cooperates with the rotating protrusion is provided at the lower end of the rotating shaft.

[0021] Preferably, the base plate is D-shaped with a central angle of 180°.

[0022] This invention overcomes the shortcomings of traditional water resistance systems in resistance adjustment, achieving rapid and smooth stepless adjustment, greatly improving user experience and training effectiveness. Specifically, its main advantages include:

[0023] 1. The height of the overflow outlet can be controlled by rotating the adjustment component, eliminating the need to manually add or remove water from the tank. This allows users to adjust the resistance in real time during exercise to meet different intensity requirements, improving the flexibility and efficiency of exercise.

[0024] 2. The special design of the shielding structure allows for a linear change in the height of the overflow outlet, enabling continuous and smooth adjustment of resistance within a certain range. This avoids the discontinuous adjustment that may occur in traditional systems, ensuring the smoothness and comfort of the exercise process.

[0025] In summary, this invention not only solves the problems of inconvenient adjustment, lack of positioning, and limitations of stepless adjustment in existing water resistance systems, but also improves the convenience, accuracy, and safety of resistance adjustment, providing users with a more efficient and personalized fitness solution. Attached Figure Description

[0026] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0027] in:

[0028] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 is a partial cross-sectional view of the present invention;

[0030] Figure 3 is a partial structural schematic diagram of the water storage tank in this utility model;

[0031] Figure 4 is a schematic diagram of a partial exploded structure of the water storage tank in this utility model;

[0032] Figure 5 is a partial structural schematic diagram of the overflow channel in this utility model;

[0033] Figure 6 is one of the partial structural schematic diagrams of the adjustment component in this utility model;

[0034] Figure 7 is a second partial structural schematic diagram of the adjustment component in this utility model;

[0035] Figure 8 is a partial structural schematic diagram of the adjustment component in this utility model.

[0036] Label Explanation:

[0037] 10. Water tank body; 11. Upper tank; 12. Lower tank; 13. Connecting edge; 14. Water inlet channel; 20. Water storage tank; 21. Locking pin; 22. Rotating protrusion; 30. Water storage cavity; 40. Resistance cavity; 50. Adjusting component; 51. Knob; 52. Connecting shaft; 60. Overflow wall; 61. Overflow channel; 62. Overflow port; 63. Side wall; 64. U-shaped wall; 70. Shielding structure; 71. Base plate; 72. Shielding plate; 73. Connecting piece; 74. Initial end; 75. Terminal end; 80. Blade. Detailed Implementation

[0038] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0039] Please refer to Figures 1 to 8, which illustrate an improved water resistance tank resistance stepless adjustment structure as a preferred embodiment of this utility model, comprising:

[0040] The water tank body 10 has a water storage tank 20 inside, which divides the inner space of the water tank body 10 into a water storage cavity 30 located inside the water storage tank 20 and a resistance cavity 40 located between the water storage tank 20 and the water tank body 10. The side wall 63 of the water storage tank 20 has a water inlet channel 14 at a high position. The bottom of the water storage tank 20 protrudes upward to form an overflow wall 60 that penetrates into the water outlet cavity. An overflow channel 61 that connects to the resistance cavity 40 is formed on the inner side of the overflow wall 60. An overflow port 62 is provided through the side wall 63 of the overflow wall 60 located in the water outlet cavity.

[0041] Specifically, as shown in Figures 1 and 2, in this embodiment, the main body 10 of the water tank is a split cylindrical shape, including a lower tank 12 and an upper tank 11. The bottom of the upper tank 11 is surrounded by a ring-shaped connecting edge 13. The connecting edge 13 is adapted to the outer diameter of the top of the water storage tank 20 and is provided with a number of locking holes (not shown in the figure) for installing bolts. The water storage tank 20 is a cylindrical shape with an open top. Its inner wall is surrounded by a number of locking pins 21 that correspond one-to-one with the locking holes and are locked and fixed to the connecting edge 13 by bolts.

[0042] Specifically, as shown in Figure 2, there is at least a partial notch along the connecting edge 13 so that a gap is formed between the top of the water storage tank 20 and the inner wall of the upper box 11, which is the water inlet channel 14.

[0043] Furthermore, as shown in Figures 3 and 4, in this embodiment, the overflow port 62 is formed by setting an overflow wall 60 inside the water storage cavity 30. The outer wall of the overflow wall 60 and the water storage cavity 30 form a water storage space for containing liquid. An opening is formed on the overflow wall 60, so that the liquid in the water storage space can flow along the opening to the overflow channel 61, and finally enter the resistance cavity 40 through the bottom of the overflow channel 61, thereby forming an overflow path for the liquid in the water storage cavity 30, so that the corresponding liquid can smoothly enter the resistance cavity 40 and cooperate with the blade 80, generating resistance as the blade 80 rotates.

[0044] It also includes an adjusting component 50, which is rotatably disposed in the water storage cavity 30 and located on one side of the overflow wall 60. It includes a shielding structure 70 for shielding the overflow port 62. An overflow edge is formed between the top of the shielding structure 70 and the overflow port 62 for the liquid in the water storage cavity 30 to flow out. An installation opening (not shown in the figure) is provided on the upper housing 11 specifically reserved for the adjusting component 50.

[0045] The shielding structure 70 is configured such that the height of the lowest position of the overflow port 62 changes linearly as its main body rotates.

[0046] The working principle of the water resistance box is described below:

[0047] Referring to Figure 2, after the water storage tank is installed, there is a certain height gap between its lower end and the lower tank body 12. A paddle 80 connected to an external drive source is pivotally connected within this gap to agitate the liquid in the resistance chamber 40. In the working state, the external drive source (i.e., when pulled by the user) drives the paddle 80 to rotate around its axis. The liquid in the resistance chamber 40 generates a certain resistance to the rotation of the paddle 80, which is transmitted to the user's hand. Under the continuous agitation of the paddle 80, a portion of the liquid in the resistance chamber 40 is continuously thrown into the water storage chamber 30 through the water inlet channel 14. The liquid in the water storage chamber 30 is adjusted by rotating the adjusting component 50 to adjust the height of the lowest position of the overflow port 62, thereby controlling the liquid capacity in the water storage chamber 30. Increasing or decreasing the liquid capacity in the water storage chamber 30 can achieve the adjustment of the resistance of the paddle 80.

[0048] Preferably, as shown in Figures 3, 4, and 5, the overflow wall 60 includes a pair of relatively parallel side walls 63 and a U-shaped wall 64 connecting the two side walls 63 on the same side. The side of the two side walls 63 away from the U-shaped wall 64 forms an overflow port 62. The center of the U-shaped wall 64 is opposite to the center of the water storage tank 20 to form a through-shaft channel (not shown in the figure, but integrated with the overflow channel 61). Thus, by aligning the overflow wall 60 with the center of the water storage tank 20, the through-shaft channel of the overflow wall 60 can smoothly pass through the corresponding drive shaft used to control the rotation of the blade 80, while the liquid can normally enter the resistance chamber 40 along the overflow channel 61 inside the overflow wall 60. This combines the water inlet and outlet structure of the water storage tank 20 with the drive structure of the blade 80, achieving a higher degree of integration.

[0049] Furthermore, the top of the U-shaped wall 64 and the side wall 63 extends to a position flush with the upper edge of the water storage tank 20. In this embodiment, the gap formed by the water inlet channel 14 is still located above the top of the water storage tank 20, thus forming a vertical height difference between it and the overflow port 62 of the overflow wall 60, preventing the liquid in the water storage tank 20 from being unable to remain.

[0050] Preferably, as shown in Figures 6, 7, and 8, the adjusting member 50 further includes a connecting shaft 52 and a knob 51 located at the top of the connecting shaft 52 to control its rotation. The shielding structure 70 is arranged around the outer periphery of the connecting shaft 52. In this embodiment, the upper edge of the connecting shaft 52 extends to the inner top wall of the upper housing 11. The knob 51 passes through the upper housing 11 and connects to the connecting shaft 52. A corresponding driving part can also be provided on the knob 51. For example, manual driving can be achieved by rotating the knob 51 directly, while electronic driving can be achieved by connecting the knob 51 to an external drive motor. In addition, to further enhance the adjustment effect of the knob 51, a corresponding locking structure can be added inside the knob 51 so that the shielding structure 70 can be locked at any position, making its stepless adjustment process more stable and controllable.

[0051] Preferably, as shown in Figures 6, 7, and 8, the shielding structure 70 includes a fan-shaped base plate 71 and a shielding plate 72 extending upward around the circular periphery of the base plate 71. The top of the shielding plate 72 is spirally shaped with increasing height so that the shielding plates 72 at different positions and the overflow port 62 form overflow edges with different height positions. In this embodiment, the outer surface of the shielding plate 72 is in close contact with the edges of the two side walls 63 so that the shielding plate 72 and the overflow port 62 can form a sealing part and an overflow edge located above the sealing part.

[0052] Preferably, as shown in Figures 6, 7, and 8, the highest position of the baffle plate 72 is provided with a horizontal section of consistent height so that the baffle plate 72 opposite to the horizontal section forms an initial end 74 with the largest overlapping and shielding area with the overflow port 62. In this embodiment, the horizontal height of the initial end 74 is slightly lower than the upper edge of the water storage tank 20. This position is the starting position of adjustment and corresponds to the highest water storage position in the water storage tank 20. As the connecting shaft 52 rotates, the overlapping area between the baffle plate 72 and the overflow port 62 gradually decreases, and the position of the lowest end of the overflow port 62 also becomes lower and lower. This corresponds to the water level in the water storage tank 20 gradually decreasing, while the liquid in the resistance chamber 40 gradually increases, and the resistance also gradually increases, forming a linear resistance adjustment process that changes with the baffle structure 70.

[0053] In this embodiment, the lowest position of the shielding plate 72 is slightly higher than the bottom plate 71, forming a terminal end 75 corresponding to the initial end 74. The shielding plate 72 with a linear height change is between the initial end 74 and the terminal end 75.

[0054] Preferably, as shown in Figures 6, 7, and 8, a connecting piece 73 is provided between the baffle plate 72 and the connecting shaft 52. The highest position of any connecting piece 73 is consistent with the top of the baffle plate 72. The connecting piece 73 can further enhance the connection strength between the baffle plate 72 and the connecting shaft 52.

[0055] Preferably, as shown in Figure 4, a rotating protrusion 22 is provided at the bottom of the water storage tank 20 and on the side of the overflow port 62. A rotating hole (not shown in the figure) is provided at the lower end of the rotating shaft to cooperate with the rotating protrusion 22. Through the cooperation of the rotating protrusion 22 and the rotating hole, the connecting shaft 52 of the adjusting member 50 is restricted between the rotating protrusion 22 and the installation opening reserved for the adjusting member 50 in the upper box 11, so that the rotation process of the adjusting member 50 is more stable and controllable.

[0056] Preferably, as shown in Figures 7 and 8, the base plate 71 is D-shaped with a central angle of 180°.

[0057] In particular, as an alternative to the regulating component, the shielding structure can also be achieved through a rack and pinion structure, such as an arc-shaped rack with a linearly varying edge. Its front side overlaps with the overflow port to intercept the liquid in the water storage chamber, while its back side forms grooves along its arc-shaped surface. The main body of the regulating component meshes with the grooves on the back of the arc-shaped rack through a gear mounted on the connecting shaft. Thus, when the knob of the regulating component is turned, the arc-shaped rack moves along its arc-shaped extension direction through the meshing of the gear and the groove. At this time, the edge of the arc-shaped rack on the overflow port changes height due to its linearly varying edge, thereby achieving adjustment of the overflow height. In addition, other similar structures with linearly varying edges can also be used, without limitation.

[0058] This invention overcomes the shortcomings of traditional water resistance systems in resistance adjustment, achieving rapid and smooth stepless adjustment, greatly improving user experience and training effectiveness. Specifically, its main advantages include:

[0059] 1. The height of the overflow port 62 is controlled by rotating the adjustment component 50, eliminating the need to manually add or remove water from the tank. This allows users to adjust the resistance in real time during exercise to meet different intensity requirements, improving the flexibility and efficiency of exercise.

[0060] 2. The special design of the shielding structure 70 allows the height of the overflow port 62 to change linearly, achieving continuous and smooth adjustment of resistance within a certain range. This avoids the discontinuous adjustment phenomenon that may occur in traditional systems, ensuring the smoothness and comfort of the exercise process.

[0061] In summary, this invention not only solves the problems of inconvenient adjustment, lack of positioning, and limitations of stepless adjustment in existing water resistance systems, but also improves the convenience, accuracy, and safety of resistance adjustment, providing users with a more efficient and personalized fitness solution.

[0062] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. An improved water resistance tank resistance stepless adjustment structure, characterized in that, include: The main body of the water tank (10) is provided with a water storage tank (20) to divide the inner space of the main body of the water tank (10) into a water storage cavity (30) located inside the water storage tank (20) and a resistance cavity (40) located between the water storage tank (20) and the main body of the water tank (10). The side wall (63) of the water storage tank (20) is provided with a high-level water inlet channel (14). The bottom of the water storage tank (20) protrudes upward to form an overflow wall (60) that penetrates into the water outlet cavity. An overflow channel (61) connecting the resistance cavity (40) is formed on the inner side of the overflow wall (60). An overflow port (62) is provided through the side wall (63) of the overflow wall (60) located in the water outlet cavity. The adjusting member (50) is rotatably disposed in the water storage cavity (30) and located on one side of the overflow wall (60), including a shielding structure (70) for shielding the overflow port (62), wherein the top of the shielding structure (70) and the overflow port (62) form an overflow port (62) for the liquid in the water storage cavity (30) to flow out. The shielding structure (70) is configured such that the height of the lowest position of the overflow port (62) changes linearly as its main body rotates.

2. The improved water resistance box resistance stepless adjustment structure according to claim 1, characterized in that, The overflow wall (60) includes a pair of side walls (63) arranged in parallel with each other and a U-shaped wall (64) connecting the two side walls (63) on the same side. The overflow outlet (62) is formed on the side of the two side walls (63) away from the U-shaped wall (64).

3. The improved water resistance tank resistance stepless adjustment structure according to claim 2, characterized in that, The center of the U-shaped wall (64) is opposite to the center of the water storage tank (20) to form a through-axis channel that runs vertically through the shaft.

4. The improved water resistance tank resistance stepless adjustment structure according to claim 2, characterized in that, The top of the U-shaped wall (64) and the side wall (63) extends to a position flush with the upper edge of the water storage tank (20).

5. The improved water resistance tank resistance stepless adjustment structure according to claim 2, characterized in that, The adjusting member (50) also includes a connecting shaft (52) and a knob (51) located at the top of the connecting shaft (52) to control the rotation of the connecting shaft (52). The shielding structure (70) is arranged around the outer periphery of the connecting shaft (52).

6. The improved water resistance tank resistance stepless adjustment structure according to claim 5, characterized in that, The shielding structure (70) includes a fan-shaped base plate (71) and a shielding plate (72) extending upward around the circular periphery of the base plate (71). The top of the shielding plate (72) is spirally increasing in height so that the shielding plates (72) at different positions and the overflow port (62) form an overflow edge with different height positions.

7. The improved water resistance tank resistance stepless adjustment structure according to claim 6, characterized in that, The highest position of the shield (72) is provided with a horizontal section with a consistent height so that the shield (72) opposite the horizontal section forms the initial end (74) with the largest overlapping shielding area with the overflow port (62).

8. The improved water resistance tank resistance stepless adjustment structure according to claim 6, characterized in that, A connecting piece (73) is provided between the shield (72) and the connecting shaft (52), and the highest position of any of the connecting pieces (73) is consistent with the top of the shield (72).

9. The improved water resistance tank resistance stepless adjustment structure according to claim 6, characterized in that, A rotating protrusion (22) is provided at the bottom of the water storage tank (20) and on the side of the overflow port (62). A rotating hole that cooperates with the rotating protrusion (22) is provided at the lower end of the rotating shaft.

10. The improved water resistance tank resistance stepless adjustment structure according to claim 1, characterized in that, The base plate (71) is D-shaped with a central angle of 180°.

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