Resistance adjustable water resistance rowing machine

Abstract

This utility model discloses an adjustable resistance water rowing machine, including a rowing machine body and a water tank fixed to the rowing machine body. A tank cover is threaded to the top of the water tank, and a rotating rod is rotatably connected to the middle of the water tank. An adjustable-angle paddle is mounted on the outer wall of the rotating rod. The top of the tank cover is equipped with an overflow prevention structure that prevents water from overflowing and allows overflowing water to flow back into the water tank by lifting it upwards. This utility model adjusts the resistance in real time by changing the angle of the paddle in the water, without the need for adding or draining water. The paddle is connected to an extension rod on the rotating rod via a rotating shaft and a driven bevel gear. With the adjustment drive, the angle can be quickly changed without affecting the continuity of training, making operation convenient. The limiting structure can fix the paddle angle at three different levels to meet different training intensities and adapt to the real-time intensity adjustment needs of different users.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, specifically to a water resistance rowing machine with adjustable resistance. Background Technology

[0002] In the fitness equipment field, water resistance rowing machines are widely favored because they can simulate the paddling experience of a real rowing machine. Water resistance rowing machines primarily rely on the resistance generated by the rotation of paddles within a closed water tank. Their movement pattern is similar to that of a kayak. During the rowing process, users coordinate a series of movements, including leg extension, leaning back, and arm pulling, to simulate the actions of rowing on water. This allows for effective muscle training in a short time by utilizing water resistance and changes in flywheel speed.

[0003] A search revealed a patent application with publication number CN206007976U that discloses an adjustable water resistance device for fitness equipment, belonging to the field of fitness equipment technology. The device includes a housing with a horizontally arranged partition dividing it into an upper chamber and a lower chamber. A vertically arranged rotating shaft is located at the center of the housing, and several water resistance plates are arranged at the bottom of the rotating shaft within the lower chamber. An upper water pipe with its upper surface higher than the partition is located near the edge of the partition, and a lower water control unit is located near the center of the partition.

[0004] The aforementioned patent controls the resistance of the exercise machine by adjusting the amount of water in the lower chamber. However, this adjustment method requires manual filling or emptying of water, which is cumbersome and affects the continuity of training. This may negatively impact the experience for users who need to adjust their exercise intensity in real time. Furthermore, traditional water resistance rowing machines lack overflow protection devices in their water tanks, requiring visual monitoring of the water level. During vigorous rowing, excessive filling can cause water to overflow from the tank's edge, affecting the equipment's lifespan and the cleanliness of the environment. Frequent refilling can also cause additional inconvenience for users. Utility Model Content

[0005] The purpose of this invention is to provide a water resistance rowing machine with adjustable resistance, in order to solve the problems of existing water resistance rowing machines where resistance adjustment requires manual water filling or draining, which is cumbersome and affects the continuity of training, water overflows easily during vigorous rowing, and may also cause additional trouble for users due to frequent water replenishment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable resistance water rowing machine, comprising a rowing machine body and a water tank fixed to the rowing machine body, a tank cover threaded to the top of the water tank, a rotating rod rotatably connected to the middle of the water tank, an angle-adjustable paddle mounted on the outer wall of the rotating rod, an adjustment drive for adjusting the paddle angle provided at the top of the rotating rod, and an anti-overflow structure provided at the top of the tank cover to prevent water from overflowing and to allow overflowing water to flow back into the water tank by lifting it upwards.

[0007] Preferably, the oar includes a paddle body and a rotating shaft fixed to one end of the paddle body. A driven bevel gear is fixed to the outer wall of the rotating shaft, and an extension rod is fixed to the outer wall of the rotating shaft. The rotating shaft is rotatably connected inside the extension rod.

[0008] Preferably, the adjustment drive includes a sleeve rotatably connected to the outer wall of the rotating rod, a driving bevel gear is fixed to the outer wall at the bottom end of the sleeve, the driving bevel gear meshes with the driven bevel gear, two grips for holding and rotating the sleeve are fixed to the top end of the sleeve, and a limiting structure for limiting the rotation of the grips is provided on the top of the box cover.

[0009] Preferably, the limiting structure includes two sets of arc-shaped grooves through which the grip rod passes, the arc-shaped grooves are opened on the upper surface of the box cover, and the arc-shaped grooves are provided with three sets of slots.

[0010] Preferably, a crossbar connecting the two sets of grips is fixed between the tops of the two grips, and a ring is provided in the middle of the crossbar to avoid axial deviation of the rotating rod.

[0011] Preferably, the anti-overflow structure includes an anti-overflow opening on the top of the box lid, an acrylic bend tube is fixed to the top of the box lid, the anti-overflow opening is connected to the acrylic bend tube, one end of the acrylic bend tube is connected to an acrylic expansion ball through a rubber ring, and the two sides of the rubber ring are respectively glued to the acrylic bend tube and the acrylic expansion ball.

[0012] Preferably, the adjustable resistance water rowing machine also includes a water inlet located on the top of the water tank, the top of which is threaded with a cap.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This invention adjusts the resistance area of ​​the paddle in the water by changing its angle, allowing for real-time resistance adjustment without the need for water injection or drainage. The paddle is connected to an extension rod on a rotating shaft via a rotating shaft, a driven bevel gear, and an adjustment drive, enabling rapid angle changes without affecting training continuity and providing convenient operation. A limiting structure allows the paddle angle to be fixed at three different positions to meet varying training intensities and adapt to the real-time intensity adjustment needs of different users.

[0015] 2. The overflow prevention structure of this utility model is achieved through an overflow outlet, an acrylic bend, a rubber ring, and an acrylic expansion ball: When water overflows from the water tank due to violent splashing, the water flows through the overflow outlet into the acrylic bend and is eventually temporarily stored in the acrylic expansion ball. Users can lift the acrylic expansion ball upwards to allow the water inside to flow back to the water tank through the rubber ring and the acrylic bend, thus avoiding water waste and equipment moisture. Attached Figure Description

[0016] Figure 1 This is an isometric view of the water tank of this utility model;

[0017] Figure 2 This is a schematic diagram of the anti-overflow structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the adjustment drive structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the card slot structure of this utility model.

[0020] In the diagram: 1. Water tank; 2. Cap; 3. Tank cover; 4. Rotary rod; 5. Oar; 6. Adjustment drive; 7. Overflow prevention structure; 8. Water inlet;

[0021] 501. Slurry; 502. Shaft; 503. Driven bevel gear; 504. Extension rod;

[0022] 601. Sleeve; 602. Drive bevel gear; 603. Handle; 604. Limiting structure;

[0023] 6041, arc groove; 6042, slot; 6043, crossbar; 6044, ring;

[0024] 701. Overflow prevention outlet; 702. Acrylic bend; 703. Expansion ball; 704. Rubber ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4This utility model provides a technical solution: an adjustable resistance water rowing machine, including a rowing machine body and a water tank 1 fixed on the rowing machine body. The top of the water tank 1 is threadedly connected to a tank cover 3. A rotating rod 4 is rotatably connected to the middle of the water tank 1. The rotating rod 4 is connected to a pull rope or pull rod assembly outside the rowing machine body and is driven to rotate by the user. An angle-adjustable paddle 5 is installed on the outer wall of the rotating rod 4. An adjustment drive 6 for adjusting the angle of the paddle 5 is provided on the top of the rotating rod 4. An anti-overflow structure 7 is provided on the top of the tank cover 3 to prevent water from overflowing and to allow overflowing water to flow back into the water tank 1 by lifting it upwards.

[0027] The paddle 5 includes a paddle body 501 and a rotating shaft 502 fixed to one end of the paddle body 501. A driven bevel gear 503 is fixed to the outer wall of the rotating shaft 502. An extension rod 504 is fixed to the outer wall of the rotating rod 4. The rotating shaft 502 is rotatably connected to the extension rod 504.

[0028] The adjustment drive 6 includes a sleeve 601 rotatably connected to the outer wall of the rotating rod 4. A driving bevel gear 602 is fixed to the outer wall at the bottom end of the sleeve 601. The driving bevel gear 602 meshes with the driven bevel gear 503. Two grips 603 for holding and rotating the sleeve 601 are fixed to the top end of the sleeve 601. A limiting structure 604 for limiting the rotation of the grips 603 is provided on the top of the box cover 3.

[0029] When the user rotates the two levers 603, the levers 603 drive the sleeve 601 to rotate synchronously around the rotating rod 4. The driving bevel gear 602 at the bottom of the sleeve 601 and the driven bevel gear 503 on the rotating shaft 502 of the paddle 5 cause the driven bevel gear 503 to rotate, which in turn drives the rotating shaft 502 to rotate, thus deflecting the angle of the paddle 501. The change in the angle of the paddle 501 directly changes its resistance area in the water: the larger the angle, the larger the resistance area and the stronger the water resistance; conversely, the water resistance decreases, thus achieving water resistance adjustment.

[0030] The limiting structure 604 includes two sets of arc-shaped grooves 6041 through which the grip rod 603 passes. The arc-shaped grooves 6041 are formed on the upper surface of the cover 3. The arc-shaped grooves 6041 are provided with slots 6042. The slots 6042 provide feedback on the jolt and a gear locking function, so that when the rotating rod 4 rotates normally, the sleeve 601 does not rotate. There are three sets of slots 6042.

[0031] When the lever 603 is rotated to the arc-shaped slot 6042 within the arc-shaped groove 6041, a noticeable jerking sensation is produced, indicating to the user that the corresponding gear has been switched. The three slots 6042 correspond to the low, medium, and high resistance gears, respectively.

[0032] A crossbar 6043 connecting the two sets of grips 603 is fixed between the tops of the two grips 603. A ring 6044 is provided in the middle of the crossbar 6043 to avoid axial deviation of the rotating rod 4. The design of the crossbar 6043 enhances the synchronization of the two grips 603 and avoids adjustment deviation caused by uneven force on a single rod; the structure of the ring 6044 ensures normal axial rotation of the rotating rod 4.

[0033] The overflow prevention structure 7 includes an overflow prevention opening 701 on the top of the lid 3. An acrylic bend 702 is fixed to the top of the lid 3. The acrylic bend 702 has a certain supporting performance and can guide water smoothly into the acrylic expansion ball 703. The overflow prevention opening 701 is connected to the acrylic bend 702. One end of the acrylic bend 702 is connected to the acrylic expansion ball 703 through a rubber ring 704. The two sides of the rubber ring 704 are respectively glued to the acrylic bend 702 and the acrylic expansion ball 703. The width of the rubber ring 704 is less than 1cm to prevent deformation and seal the connection between the acrylic bend 702 and the acrylic expansion ball 703, while allowing the acrylic expansion ball 703 to rise.

[0034] The adjustable resistance water rowing machine also includes a water inlet 8 located on the top of the water tank 1, and a cap 2 is threadedly connected to the top of the water inlet 8.

[0035] When using, open the cap 2 of the water inlet 8 on the top of the water tank 1, and inject an appropriate amount of water into the water tank 1 through the water inlet 8. After filling the water, tighten the cap 2 to prevent water from overflowing from the water inlet 8 during training.

[0036] According to their own training needs, the user holds two grips 603 and rotates them synchronously. The sleeve 601 rotates around the rotating rod 4 with the grips 603. The driving bevel gear 602 at the bottom of the sleeve 601 meshes with the driven bevel gear 503 on the rotating shaft 502 of the paddle 5, transmitting the rotational motion to the rotating shaft 502. The rotating shaft 502 drives the paddle 501 to rotate within the extension rod 504, changing the angle between the paddle 501 and the water surface: the larger the angle, the larger the area of ​​resistance encountered by the paddle 501 in the water, and the stronger the water resistance; conversely, the water resistance is reduced.

[0037] When the lever 603 is rotated to the slot 6042 in the arc groove 6041 of the cover 3, the lever 603 will be engaged in the slot 6042 and produce a jerking sensation, indicating to the user that the current resistance level has been locked.

[0038] When the water level in tank 1 is too high or the slurry 501 rotates violently, causing water to impact the tank cover 3, the overflowing water enters the acrylic bend 702 through the overflow port 701 at the top of the tank cover 3. The overflowing water is temporarily stored in the acrylic expansion ball 703, allowing for direct observation of the water accumulation. When the slurry 501 rotates violently, a momentary pressure fluctuation occurs in tank 1. The overflow port 701 balances the pressure through the connection between the acrylic bend 702 and the acrylic expansion ball 703, preventing water pressure from directly acting on the gaps in the tank cover 3 and causing leakage. When it is necessary to collect the accumulated water, the user lifts the expansion ball 703 upwards, using gravity to allow the water to flow back to tank 1 through the acrylic bend 702 and the overflow port 701.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water resistance rowing machine with adjustable resistance, characterized in that: The system includes a rowing machine body and a water tank (1) fixed to the rowing machine body. The top of the water tank (1) is threaded with a tank cover (3). A rotating rod (4) is rotatably connected to the middle of the water tank (1). An angle-adjustable paddle (5) is installed on the outer wall of the rotating rod (4). An adjustment drive (6) for adjusting the angle of the paddle (5) is provided on the top of the rotating rod (4). An anti-overflow structure (7) is provided on the top of the tank cover (3) to prevent water from overflowing and to allow overflowing water to flow back into the water tank (1) by lifting it upwards.

2. The water resistance rowing machine with adjustable resistance according to claim 1, characterized in that: The paddle (5) includes a paddle body (501) and a rotating shaft (502) fixed to one end of the paddle body (501). A driven bevel gear (503) is fixed to the outer wall of the rotating shaft (502), and an extension rod (504) is fixed to the outer wall of the rotating rod (4). The rotating shaft (502) is rotatably connected to the extension rod (504).

3. The water resistance rowing machine with adjustable resistance according to claim 2, characterized in that: The adjustment drive (6) includes a sleeve (601) rotatably connected to the outer wall of the rotating rod (4). A driving bevel gear (602) is fixed on the outer wall at the bottom end of the sleeve (601). The driving bevel gear (602) meshes with the driven bevel gear (503). Two grips (603) for holding and rotating the sleeve (601) are fixed at the top end of the sleeve (601). A limiting structure (604) for limiting the rotation of the grips (603) is provided on the top of the box cover (3).

4. The water resistance rowing machine with adjustable resistance according to claim 3, characterized in that: The limiting structure (604) includes two sets of arc-shaped grooves (6041) through which the grip rod (603) passes. The arc-shaped grooves (6041) are opened on the upper surface of the box cover (3). The arc-shaped grooves (6041) are provided with slots (6042), and there are three sets of slots (6042).

5. The water resistance rowing machine with adjustable resistance according to claim 4, characterized in that: A crossbar (6043) connecting the two sets of grips (603) is fixed between the tops of the two grips (603), and a ring (6044) is provided in the middle of the crossbar (6043) to avoid axial movement of the rotating rod (4).

6. The water resistance rowing machine with adjustable resistance according to claim 1, characterized in that: The overflow prevention structure (7) includes an overflow prevention opening (701) opened on the top of the box cover (3). An acrylic bend (702) is fixed on the top of the box cover (3). The overflow prevention opening (701) is connected to the acrylic bend (702). One end of the acrylic bend (702) is connected to an acrylic expansion ball (703) through a rubber ring (704). The two sides of the rubber ring (704) are respectively glued to the acrylic bend (702) and the acrylic expansion ball (703).

7. The water resistance rowing machine with adjustable resistance according to claim 1, characterized in that: The adjustable resistance water rowing machine also includes a water inlet (8) located on top of the water tank (1), and a cap (2) is threaded onto the top of the water inlet (8).

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