Water resistance assembly for rowing machine

Abstract

A water resistance assembly for a rowing machine comprises a water tank, a rotating shaft, a paddle rod piece, at least two paddles and a paddle adjusting mechanism piece, the water tank comprises a first shell and a second shell, and the first shell and the second shell are sealed with each other; the rotating shaft penetrates through the first shell and the second shell and has a rotating shaft length direction; the paddle rod piece is provided with at least two half parts, the half parts have rod piece length directions, the rod piece length directions are perpendicular to the rotating shaft length direction, the rotating shaft penetrates through the paddle rod piece, the at least two half parts are arranged around the rotating shaft, and the half parts are provided with ends away from the rotating shaft; the blades are arranged at the end parts of the half parts; the rotating shaft is suitable for driving at least two blades to move around the rotating shaft through the paddle rod pieces; the paddle adjusting mechanism part is connected with the paddle, one part of the paddle adjusting mechanism part is located in the water tank, the other part of the paddle adjusting mechanism part is located outside the water tank, and the paddle adjusting mechanism part is suitable for moving the paddle to the relative position of the corresponding half part in the length direction of the rod piece, so that the effect of adjusting the water resistance is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of sports equipment accessories, in particular to a water resistance assembly for a rowing machine. Background Art

[0002] 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.

[0003] The traditional rowing machine is characterized by having a hollow container filled with water. In each exercise cycle, the paddle located in the water of the hollow container rotates by pulling a drive rope to generate momentum. The water flow will provide resistance to the rotation of the paddle, but the water resistance of the traditional rowing machine cannot be adjusted, so that the user cannot adjust the force according to his or her individual condition. Summary of the invention

[0004] In order to solve the above problems, the technical solution of the present invention is as follows: A water resistance assembly for a rowing machine comprises a water tank, a rotating shaft, a paddle rod, at least two paddles and a paddle blade adjustment mechanism, wherein the water tank comprises a first shell and a second shell, and the first shell and the second shell are sealed with each other; the rotating shaft passes through the first shell and the second shell, and the rotating shaft has a rotating shaft length direction; the paddle rod has at least two halves, and the halves have a rod length direction, and the rod length direction is perpendicular to the rotating shaft length direction, the rotating shaft passes through the paddle rod, and at least two halves are arranged around the rotating shaft, and the halves have ends away from the rotating shaft; the paddle blades are arranged at the ends of the halves, and the rotating shaft is suitable for driving at least two paddle blades to move around the rotating shaft through the paddle rod; the paddle blade adjustment mechanism connects the paddle blades, a part of the paddle blade adjustment mechanism is located inside the water tank, and another part of the paddle blade adjustment mechanism is located outside the water tank, and the paddle blade adjustment mechanism is suitable for moving the paddle blades to relative positions on the corresponding halves according to the rod length direction.

[0005] Furthermore, the paddle adjustment mechanism includes at least two sliding members, at least two pivot links and a sleeve member, the sliding member has an outer end and an inner end relative to the outer end, the pivot link has a first end and a second end relative to the first end, the sliding member is arranged in the corresponding half, the outer end of the sliding member is connected to the corresponding paddle, the inner end of the sliding member is pivotally connected to the first end of the corresponding pivot link, the second end of the pivot link is pivotally connected to the sleeve member, the rotating shaft passes through the sleeve member, and the sleeve member is suitable for moving along the length direction of the rotating shaft to drive the paddle to move relative to the paddle rod member.

[0006] Further, the blade adjusting mechanism further includes a collar block, a convex post, and an eccentric guide. The socket member passes through the collar block, and the collar block is adapted to rotate relative to the socket member. The convex post is fixedly disposed on the outer peripheral surface of the collar block. The eccentric guide has an axis and an arc-shaped guide hole. The arc-shaped guide hole surrounds the axis, and the convex post is located in the arc-shaped guide hole. The arc-shaped guide hole has a starting end and an ending end. From the starting end to the ending end, the distance between the center line of the arc-shaped guide hole and the axis gradually decreases.

[0007] Further, the blade adjusting mechanism further includes a collar block, a transmission member, and a rack. The socket member passes through the collar block, and the collar block is adapted to rotate relative to the socket member. The rack is fixedly disposed on the outer peripheral surface of the collar block, and the transmission member meshes with the rack.

[0008] Further, the blade adjusting mechanism further includes a limit post and a limit piece. The limit piece is provided with a limit hole. The limit post is perpendicular to the length direction of the rotating shaft and is located in the limit hole. One of the limit post and the limit piece is fixedly disposed on the rack, and the other of the limit post and the limit piece is fixedly disposed on the water tank.

[0009] Further, the transmission member has a gear or a worm, and the gear or the worm meshes with the rack; alternatively, the blade adjusting mechanism further includes a knob. The knob has a shaft portion, the transmission member has an axis, and the shaft portion of the knob is fixedly connected to the axis of the transmission member. The knob is adapted to rotate the transmission member around the axis.

[0010] Further, the blade adjusting mechanism further includes a bearing ring. The collar block has an inner surface, and the inner surface defines a receiving cavity. The socket member is provided with a flange. The socket member passes through the bearing ring, and the bearing ring is placed in the receiving cavity and abuts against the flange.

[0011] Further, the socket member is further provided with a recessed flange, and the blade adjusting mechanism further includes a ring-shaped buckle. The ring-shaped buckle is placed in the recessed flange and abuts against the collar block.

[0012] Further, the blade adjusting mechanism further includes at least two guiding members. The guiding member has a column body and a guiding groove. The column body passes through the guiding groove. One of the column body and the guiding groove is disposed on the corresponding sliding member, and the other of the column body and the guiding groove is disposed in the corresponding half part.

[0013] Further, the end of the half part has a clamping groove, and the blade is inserted into the corresponding clamping groove and is adapted to move in the clamping groove; alternatively, at least two half parts include three half parts or five half parts.

[0014] The water resistance assembly of the present invention is provided with a water tank, a rotating shaft, a paddle rod, at least two paddles and a paddle blade adjustment mechanism. The rotating shaft passes through the water tank and the paddle rod placed in the water tank. The paddle blade is arranged at the end of the half. The rotating shaft is suitable for driving the two paddle blades to move around the rotating shaft through the paddle rod. The paddle blade adjustment mechanism connects the paddle blades. The paddle blade adjustment mechanism is suitable for moving the position of the paddle blade relative to the paddle rod along the length direction of the rod, so as to achieve 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

[0015] The present invention will be further described below with reference to the accompanying drawings in conjunction with embodiments: Figure 1 It is a structural schematic diagram of the water resistance structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the internal structure of the first embodiment of the present invention.

[0017] Figure 3 It is an exploded schematic diagram of some blade adjustment mechanism components in the first embodiment of the present invention.

[0018] Figure 4 It is an exploded schematic diagram of an eccentric guide and a knob in Example 1 of the present invention.

[0019] Figure 5 It is a schematic cross-sectional view of a ring block in an embodiment of the present invention.

[0020] Figure 6 It is an overall cross-sectional view of the first embodiment of the present invention.

[0021] Figure 7 It is a schematic cross-sectional view of the sleeve connector in the present invention.

[0022] Figure 8 It is a structural schematic diagram of the paddle rod member in the present invention.

[0023] Fig. 9 It is a schematic diagram of the internal structure of the second embodiment of the present invention.

[0024] Fig.10 It is an overall cross-sectional view of the second embodiment of the present invention.

[0025] Fig.11 It is an overall cross-sectional view of another direction of the second embodiment of the present invention.

[0026] Fig.12 It is an exploded schematic diagram of some blade adjustment mechanism components in Example 2 of the present invention.

[0027] Fig.13 It is a schematic diagram of the internal structure of the second embodiment of the present invention in which the worm is a transmission member. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] See also Figure 1-13 , the present invention provides the following technical solutions: Example 1, see Figure 1-8 A water resistance assembly for a rowing machine includes a water tank 1, a rotating shaft 2, a paddle rod 3, two paddle blades 4 and a paddle blade adjustment mechanism 5. The water tank 1 includes a first shell 11 and a second shell 12, the first shell 11 and the second shell 12 are sealed with each other, the rotating shaft 2 passes through the first shell 11 and the second shell 12, the rotating shaft 2 has a rotating shaft 2 length direction, the paddle rod 3 has a rod length direction, the rod length direction is perpendicular to the rotating shaft 2 length direction, the rotating shaft 2 passes through the paddle rod 3, and the paddle rod 3 has two opposite halves according to the rod length direction. The half has an end away from the rotating shaft 2, and the two paddles 4 are respectively arranged at the opposite ends of the paddle rod member 3. The rotating shaft 2 is suitable for driving the two paddles 4 to move around the rotating shaft 2 through the paddle rod member 3. The paddle adjustment mechanism member 5 connects the two paddles 4. The paddle adjustment mechanism member 5 is suitable for moving the positions of the two paddles 4 relative to the paddle rod member 3 along the length direction of the rod. When the positions of the paddles on the paddle rod member 3 are different, the distances between the paddles and the rotating shaft 2 will also be different, and the torques generated by the paddles with the rotating shaft 2 as the fulcrum will also be different, thereby achieving the effect of adjusting the water resistance in the water tank 1.

[0031] In the first embodiment, the paddle adjustment mechanism 5 includes two sliding members 51, two pivot connecting rods 52 and a sleeve 53. The sliding member 51 has an outer end and an inner end relative to the outer end. The pivot connecting rod 52 has a first end and a second end relative to the first end. The sliding member 51 is arranged in the corresponding half of the paddle rod 3. The outer end of the sliding member 51 is connected to the corresponding paddle. The inner end of the sliding member 51 is pivotally connected to the first end of the corresponding pivot connecting rod 52. The second end of the pivot connecting rod 52 is pivotally connected to the sleeve 53. The rotating shaft 2 passes through the sleeve 53. The sleeve 53 is suitable for moving along the length direction of the rotating shaft 2 to drive the paddle to move relative to the paddle rod 3. The aforementioned pivoting method is completed by inserting a pin into a pin hole.

[0032] In the first embodiment, the blade adjustment mechanism 5 also includes a collar block 54, a boss 541 and an eccentric guide 55. The sleeve 53 passes through the collar block 54, and the collar block 54 is suitable for rotating relative to the sleeve 53. The boss 541 is fixedly arranged on the outer peripheral surface of the collar block 54. The eccentric guide 55 has an axis and an arc guide hole 551. The arc guide hole 551 surrounds the axis. The boss 541 is located in the arc guide hole 551. The arc guide hole 551 has a starting end 5511 and an end 5512. From the starting end 5511 to the end 5512, the distance between the center line of the arc guide hole 551 and the axis gradually decreases, so that when the eccentric guide 55 rotates around the axis 551, the arc guide hole 552 drives the boss 541 to move up and down, thereby driving the collar block 54 to move up and down to link the corresponding blade.

[0033] In the first embodiment, the blade adjustment mechanism 5 further includes a knob 56 having a shaft 561, the shaft 561 being fixedly connected to the axis of the eccentric guide 55, the knob 56 being suitable for rotating the eccentric guide 55 around the axis, and the knob 56 being convenient for the user to adjust the desired force.

[0034] In the first embodiment, the blade adjustment mechanism 5 also includes a bearing ring 57, the collar block 54 has an inner surface, the inner surface defines a receiving cavity 542, the sleeve 53 is provided with a flange 531, the sleeve 53 passes through the bearing ring 57, the bearing ring 57 is placed in the receiving cavity 542 and abuts against the flange 531, whereby the collar block 54 can rotate relative to the sleeve 53 to maintain the boss 541 of the collar block 54 to move up and down in the same plane.

[0035] In the first embodiment, the sleeve 53 is further provided with a recessed edge 532 , and the paddle adjustment mechanism 5 further includes an annular buckle 58 , which is inserted into the recessed edge 532 and abuts against the collar block 54 , whereby the collar block 54 is positioned between the flange 531 and the recessed edge 532 and can rotate relative to the sleeve 53 .

[0036] In the first embodiment, the end of the half 31 has a clamping groove 32, and the paddle 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 paddle 4, but also strengthen the structural strength of the paddle 4 to resist water resistance.

[0037] In the first embodiment, refer to Fig.13 At least two halves 31 include three halves 31 or five halves 31, and the three halves 31 or five halves 31 are evenly arranged around the rotating shaft 2 at equal angles. Through this configuration, the paddle rod 3 and the paddle blade 4 will be more stable when rotating and reduce the overall vibration of the water tank, thereby improving the user experience.

[0038] In embodiment one, the paddle adjustment mechanism 5 also includes two guide members 59, the guide members 59 have a column 591 and a guide groove 592, the column 591 passes through the guide groove 592, one of the column 591 and the guide groove 592 is arranged in the corresponding sliding member 51, for example, the guide groove 592 is opened in the sliding member 51, and the other of the column 591 and the guide groove 592 is arranged in the corresponding half 31 of the paddle rod member 3, for example, the column 591 is arranged in the half 31 of the paddle rod member 3.

[0039] Example 2, see Figure 9-13 The paddle blade adjustment mechanism 6 is connected to the paddle blade 4, a part of the paddle blade adjustment mechanism 6 is located inside the water tank 1, and another part of the paddle blade adjustment mechanism 6 is located outside the water tank 1. The paddle blade adjustment mechanism 6 is suitable for moving the relative position of the paddle blade 4 on the corresponding half 31 along the length direction of the rod.

[0040] In the second embodiment, the paddle adjustment mechanism 6 includes at least two sliding members 61, at least two pivot links 62 and a sleeve 63. The sliding member 61 has an outer end and an inner end relative to the outer end. The pivot link 62 has a first end and a second end relative to the first end. The sliding member 61 is arranged in the corresponding half portion 31. The outer end of the sliding member 61 is connected to the corresponding paddle 4. The inner end of the sliding member 61 is pivotally connected to the first end of the corresponding pivot link 62. The second end of the pivot link 62 is pivotally connected to the sleeve 63. The rotating shaft 2 passes through the sleeve 63. The sleeve 63 is suitable for moving along the length direction of the rotating shaft 2 to drive the paddle 4 to move relative to the paddle rod 3.

[0041] In the second embodiment, the paddle adjustment mechanism 6 also includes a collar block 64, a transmission member 65 and a rack 641. The sleeve block 63 passes through the collar block 64. The collar block 64 is suitable for rotating relative to the sleeve block 63. The rack 641 is fixedly arranged on the outer peripheral surface of the collar block 64. The transmission member 65 is meshed with the rack 641, so as to drive the transmission member 65 to drive the rack 641 to move, so that the user can adjust the desired force.

[0042] In the second embodiment, the paddle adjustment mechanism 6 also includes a limiting column 70 and a limiting plate 71. The limiting plate 71 is provided with a limiting hole 711. The limiting column 70 is perpendicular to the length direction of the rotating shaft and is located in the limiting hole 711. One of the limiting column 70 and the limiting plate 71 is fixedly arranged on the rack 641, and the other limiting column 70 and the limiting plate 71 is fixedly arranged on the water tank 1. The limiting column 70 and the limiting plate 71 limit the moving distance and direction of the rack 641, so that it can only move within the range and direction limited by the limiting hole 711.

[0043] In the second embodiment, the transmission member 65 has a gear or a worm, which meshes with the rack 641; or, the paddle adjustment mechanism 6 also includes a knob 66, the knob 66 ​​has an axis, the transmission member 65 has an axis, the axis 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. When a 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 a 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.

[0044] In summary, the water resistance assembly of the present invention is provided with a water tank 1, a rotating shaft 2, a paddle rod member 3, at least two paddle blades 4 and a paddle blade adjustment mechanism member 5. The rotating shaft 2 passes through the water tank 1 and the paddle rod member 3 placed in the water tank 1. The paddle blade 4 is arranged at the end of the paddle rod member 3. The rotating shaft 2 is suitable for driving the paddle blade 4 to move around the rotating shaft 2 through the paddle rod member 3. The paddle blade adjustment mechanism member 5 is connected to the paddle blade 4. The paddle blade adjustment mechanism member 5 is suitable for moving the position of the paddle blade 4 relative to the paddle rod member 3 along the length direction of the rod, so as to achieve 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.

[0045] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A water resistance assembly for a rowing machine, characterized in that: include: A water tank (1), the water tank (1) comprising a first shell (11) and a second shell (12), the first shell (11) and the second shell (12) being sealed to each other; A rotating shaft (2), the rotating shaft (2) passing through the first shell (11) and the second shell (12), the rotating shaft (2) having a length direction of the rotating shaft (2); A paddle rod member (3), the paddle rod member (3) having at least two halves (31), the halves (31) having a rod length direction, the rod length direction being perpendicular to the length direction of the rotating shaft (2), the rotating shaft (2) passing through the paddle rod member (3), the at least two halves (31) being arranged around the rotating shaft, the halves (31) having ends away from the rotating shaft (2); at least two paddles (4), the paddles (4) being arranged at the end of the half portion (31), the rotating shaft (2) being adapted to drive the at least two paddles (4) to move around the rotating shaft (2) via the paddle rod (3); as well as A paddle blade adjustment mechanism (5; 6), the paddle blade adjustment mechanism (5; 6) being connected to the paddle blade (4), a portion of the paddle blade adjustment mechanism (5; 6) being located inside the water tank (1), and another portion of the paddle blade adjustment mechanism (5; 6) being located outside the water tank (1), the paddle blade adjustment mechanism (5; 6) being suitable for moving the paddle blade (4) to a relative position on the corresponding half portion (31) along the length direction of the rod.

2. A water resistance assembly for a rowing machine according to claim 1, characterized in that: The paddle adjustment mechanism (5; 6) comprises at least two sliding members (51; 61), at least two pivot connecting rods (52; 62) and a sleeve member (53; 63), wherein the sliding member (51; 61) has an outer end and an inner end relative to the outer end, the pivot connecting rod (52; 62) has a first end and a second end relative to the first end, the sliding member (51; 61) is arranged in the corresponding half portion (31), and the outer end of the sliding member (51; 61) The inner end of the sliding member (51; 61) is pivotally connected to the first end of the corresponding pivot connecting rod (52; 62), the second end of the pivot connecting rod (52; 62) is pivotally connected to the sleeve member (53; 63), the rotating shaft (2) passes through the sleeve member (53; 63), and the sleeve member (53; 63) is suitable for moving along the length direction of the rotating shaft (2) to drive the paddle (4) to move relative to the paddle rod member (3).

3. A water resistance assembly for a rowing machine according to claim 2, characterized in that: The blade adjustment mechanism component (5) further comprises a collar block (54), a boss (541) and an eccentric guide member (55); the sleeve member (53) passes through the collar block (54); the collar block (54) is suitable for rotating relative to the sleeve member (53); the boss (541) is fixedly arranged on the outer peripheral surface 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; the boss (541) is located in the arc-shaped guide hole (551); the arc-shaped guide hole (551) has a starting end (5511) and an end end (5512); and from the starting end (5511) to the end end (5512), the distance between the center line of the arc-shaped guide hole (551) and the axis gradually decreases.

4. A water resistance assembly for a rowing machine according to claim 2, characterized in that: The blade adjustment mechanism (6) further comprises a collar block (64), a transmission member (65) and a rack (641); the sleeve member (63) passes through the collar block (64); 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); and the transmission member (65) is meshed with the rack (641).

5. A water resistance assembly for a rowing machine according to claim 4, characterized in that: The paddle adjustment mechanism (6) further comprises a limiting column (70) and a limiting plate (71); the limiting plate (71) is provided with a limiting hole (711); the limiting column (70) is perpendicular to the length direction of the rotating shaft and is located in the limiting hole (711); one of the limiting column (70) and the limiting plate (71) is fixedly arranged on the rack (641); and the other of the limiting column (70) and the limiting plate (71) is fixedly arranged on the water tank (1).

6. A water resistance assembly for a rowing machine according to claim 4, characterized in that: The transmission member (65) has a gear or a worm, and the gear or the worm is meshed with the rack (641); or the blade adjustment mechanism (6) further includes a knob (66), the knob (66) has a shaft, 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 causing the transmission member (65) to rotate around the axis.

7. A water resistance assembly for a rowing machine according to claim 3 or 4, characterized in that: The blade adjustment mechanism (5; 6) also includes a bearing ring (57; 67), the collar block (54; 64) has an inner surface, the inner surface defines a receiving cavity (542; 642), the sleeve (53; 63) is provided with a flange (531; 631), the sleeve (53; 63) passes through the bearing ring (57; 67), and the bearing ring (57; 67) is placed in the receiving cavity (542; 642) and abuts against the flange (531; 631).

8. A water resistance assembly for a rowing machine according to claim 7, characterized in that: The sleeve connector (53; 63) is also provided with a recessed edge (532; 632), and the paddle adjustment mechanism component (5; 6) further comprises an annular buckle (58; 68), wherein the annular buckle (58; 68) is inserted into the recessed edge (532; 632) and abuts against the sleeve block (54; 64).

9. A water resistance assembly for a rowing machine according to claim 2, characterized in that: The paddle adjustment mechanism (5; 6) also includes at least two guide members (59; 69), wherein the guide member (59; 69) has a column (591; 691) and a guide groove (592; 692), wherein the column (591; 691) passes through the guide groove (592; 692), and one of the column (591; 691) and the guide groove (592; 692) is arranged in the corresponding sliding member (51; 61), and the other of the column (591; 691) and the guide groove (592; 692) is arranged in the corresponding half (31).

10. The water resistance assembly for a rowing machine according to claim 1, characterized in that: The ends of the half parts (31) have clamping grooves (32), and the paddles (4) are inserted into the corresponding clamping grooves (32) and are suitable for moving in the clamping grooves (32); or, the at least two half parts (31) include three half parts (31) or five half parts (31).

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