Resistance system of rowing machine

Abstract

The utility model discloses a resistance system of a rowing machine, which belongs to the technical field of fitness equipment and comprises an upper shell and a lower shell, the upper shell and the lower shell are spliced through a plurality of connecting pieces, a plurality of first reinforcing ribs are uniformly formed on the inner wall of the upper shell, and second reinforcing ribs are arranged at positions, corresponding to the first reinforcing ribs, of the inner wall of the lower shell. A rotating shaft body is rotationally arranged between the upper shell and the lower shell, blades are symmetrically arranged on the peripheral side of the rotating shaft body along the central axis of the rotating shaft, and arc-shaped rotation stopping surfaces are formed on the sides, away from the rotating shaft body, of the blades. According to the resistance system of the rowing machine, when a consumer uses the rowing machine to do exercises, the rotating shaft body rotates to drive the paddles, so that water rotates to provide resistance, the flow direction of the water is changed through the first reinforcing rib, the second reinforcing rib and the rotation stopping face, and the situation that the resistance is reduced due to the change of the flow direction of the water is avoided; and a better exercise effect is achieved.

Description

Technical Field

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

[0002] Rowing machines are designed for training purposes and are used to simulate rowing on water. They are effective in strengthening the muscles of the legs, waist, upper limbs, chest, and back.

[0003] Existing water resistance rowing machines work by rotating the water within the resistance system through pulling the paddle pole, thus creating resistance and achieving the purpose of exercise. However, with prolonged pulling, due to the inertia of the water, the water in the resistance system will continuously rotate in one direction, resulting in reduced resistance for the exerciser in the later stages of the workout, thus failing to achieve the optimal training effect.

[0004] Based on the above problems, a technical solution for the resistance system of a rowing machine is proposed. Utility Model Content

[0005] The purpose of this invention is to solve the problems in the prior art by proposing a resistance system for a rowing machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rowing machine resistance system, comprising an upper shell and a lower shell, wherein the upper shell and the lower shell are spliced ​​together by a plurality of connecting parts, wherein a plurality of first reinforcing ribs are uniformly formed on the inner wall of the upper shell, and a second reinforcing rib is provided on the inner wall of the lower shell corresponding to the position of the first reinforcing ribs, wherein a rotating shaft is rotatably provided between the upper shell and the lower shell, and blades are symmetrically arranged on the periphery of the rotating shaft along the central axis of the rotating shaft, wherein an arc-shaped anti-rotation surface is formed on the side of the blades away from the rotating shaft.

[0007] The present invention is further configured such that: a plurality of water-blocking ridges are uniformly formed on the blade, and the water-blocking ridges extend from the side of the blade near the rotating shaft to the side of the blade near the inner wall of the housing.

[0008] The present invention is further configured such that: the height of the water-blocking ridge is 1-3mm, and the spacing between adjacent water-blocking ridges is 3-7mm.

[0009] The present invention is further configured such that: the anti-rotation surface has a gap between the first reinforcing rib and the second reinforcing rib, the gap being 5-10mm.

[0010] The present invention is further configured such that: the connecting member includes a cross screw and a nut; the lower housing is formed with a plurality of positioning grooves; the upper housing is provided with an opening corresponding to the positioning groove; the cross screw passes through the opening and the positioning groove and engages with the nut through a threaded connection.

[0011] The present invention is further configured such that: the upper housing is provided with a water inlet, and the water inlet is detachably provided with a rubber plug.

[0012] The present invention is further configured such that: the upper shell, the lower shell, the rotating shaft and the blade are all made of high-performance PP composite material, and a metal ring is nested in the rotating area of ​​the rotating shaft.

[0013] In summary, this utility model has the following beneficial effects: when consumers use the rowing machine for exercise, the rotation of the shaft drives the paddle blades, thereby causing the water to rotate and providing resistance. The first reinforcing rib, the second reinforcing rib, and the anti-rotation surface change the direction of water flow, avoiding a decrease in resistance due to the change in water flow direction, thus achieving a better exercise effect. Attached Figure Description

[0014] Figure 1 This is a partial cross-sectional view of the present invention;

[0015] Figure 2 This is an exploded view of the structure of this utility model;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a schematic diagram of the structure of the blade and shaft of this utility model.

[0018] In the diagram: 1. Upper shell; 11. First reinforcing rib; 12. Opening; 13. Water inlet; 2. Lower shell; 21. Second reinforcing rib; 22. Positioning groove; 3. Shaft; 4. Blade; 41. Anti-rotation surface; 42. Water-blocking ridge; 5. Phillips head screw; 6. Nut; 7. Rubber plug. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] A rowing machine's resistance system, such as Figure 1-4As shown, the device includes an upper shell 1 and a lower shell 2, which are connected by several connectors. The inner wall of the upper shell 1 is uniformly formed with several first reinforcing ribs 11, and the inner wall of the lower shell 2 is provided with second reinforcing ribs 21 corresponding to the positions of the first reinforcing ribs 11. A rotating shaft 3 is rotatably provided between the upper shell 1 and the lower shell 2. Blades 4 are symmetrically arranged around the circumference of the rotating shaft 3 along the central axis of the rotating shaft. The side of the blades 4 away from the rotating shaft 3 is formed with an arc-shaped anti-rotation surface 41. Specifically, there is a gap of 5-10mm between the anti-rotation surface 41 and the first reinforcing ribs 11 and the second reinforcing ribs 21.

[0021] The first reinforcing rib 11 and the second reinforcing rib 21 not only increase the structural strength of the upper shell 1 and the lower shell 2, but also generate a certain resistance to the water when it hits the first reinforcing rib 11 and the second reinforcing rib 21 as the water rotates with the blade 4. This prevents the water from flowing continuously in one direction during long-term exercise, and guides the water flow through the anti-rotation surface 41 to form a swirling vortex, reducing the inertial force of the water in the direction of rotation, thereby ensuring that the water can provide stable resistance.

[0022] Practical effect: When consumers use the rowing machine for exercise, the rotation of the pivot 3 drives the paddle 4, which in turn rotates the water to provide resistance. The first reinforcing rib 11, the second reinforcing rib 21 and the anti-rotation surface 41 change the direction of water flow, preventing the resistance from decreasing due to the change in water flow direction, thus achieving a better exercise effect.

[0023] Furthermore, several water-blocking ridges 42 are uniformly formed on the blade 4. The water-blocking ridges 42 extend from the side of the blade 4 near the shaft body 3 to the side of the blade 4 near the inner wall of the housing. The height of the water-blocking ridges 42 is 1-3mm, and the distance between adjacent water-blocking ridges 42 is 3-7mm.

[0024] During the rotation of the paddle 4, the water-blocking ridge 42 can cut the water flow, further change the direction of the water flow, and further increase the resistance of the rowing machine to achieve a better exercise effect.

[0025] like Figures 1-3 As shown, the connector includes a cross screw 5 and a nut 6. The lower housing 2 is formed with several positioning grooves 22. The upper housing 1 is provided with an opening 12 corresponding to the positioning groove 22. The cross screw 5 passes through the opening 12 and the positioning groove 22 and is threadedly engaged with the nut 6.

[0026] This connection method is simple in structure and easy to install. The positioning groove 22 can ensure the accurate position of the upper and lower shells 2 when splicing, making the connection more stable.

[0027] like Figure 1 as well as Figure 2As shown, the upper housing 1 is provided with a water inlet 13, and a rubber plug 7 is detachably provided on the water inlet 13. The rubber plug 7 can tightly seal the water inlet 13 to prevent water from leaking out during the use of the rowing machine. When water needs to be added or maintenance is required, the consumer can easily remove the rubber plug 7, making the operation convenient and quick.

[0028] In this embodiment, the upper shell 1, lower shell 2, shaft 3, and blade 4 are all made of high-performance PP composite material. High-performance PP composite material has the characteristics of high strength, high toughness, and wear resistance, and can better withstand the various stresses generated by the water caused by the rotation of the blade 4 with the shaft 3, ensuring that the rowing machine can maintain stable performance under long-term high-intensity use.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rowing machine resistance system, comprising an upper housing (1) and a lower housing (2), characterized in that: The upper shell (1) and the lower shell (2) are spliced ​​together by several connecting parts. The inner wall of the upper shell (1) is uniformly formed with several first reinforcing ribs (11). The inner wall of the lower shell (2) is provided with second reinforcing ribs (21) corresponding to the positions of the first reinforcing ribs (11). A rotating shaft (3) is rotatably provided between the upper shell (1) and the lower shell (2). The rotating shaft (3) is symmetrically provided with blades (4) on its periphery along the central axis of the rotating shaft. The side of the blades (4) away from the rotating shaft (3) is formed with an arc-shaped anti-rotation surface (41).

2. The resistance system of a rowing machine according to claim 1, characterized in that: The blade (4) is uniformly formed with several water-blocking ridges (42), which extend from the side of the blade (4) near the shaft body (3) to the side of the blade (4) near the inner wall of the housing.

3. The resistance system of a rowing machine according to claim 2, characterized in that: The height of the water-blocking rib (42) is 1-3mm, and the distance between adjacent water-blocking ribs (42) is 3-7mm.

4. The resistance system of a rowing machine according to claim 1, characterized in that: The anti-rotation surface (41) has a gap of 5-10 mm between it and the first reinforcing rib (11) and the second reinforcing rib (21).

5. The resistance system of a rowing machine according to claim 1, characterized in that: The connector includes a cross screw (5) and a nut (6). The lower housing (2) is formed with several positioning grooves (22). The upper housing (1) is provided with an opening (12) corresponding to the positioning groove (22). The cross screw (5) passes through the opening (12) and the positioning groove (22) and is threadedly engaged with the nut (6).

6. The resistance system of a rowing machine according to claim 1, characterized in that: The upper housing (1) is provided with a water inlet (13), and the water inlet (13) is detachably provided with a rubber plug (7).

7. The resistance system of a rowing machine according to claim 1, characterized in that: The upper housing (1), lower housing (2), rotating shaft (3), and blades (4) are all made of high-performance PP composite material.

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