A rowing machine

Abstract

The present invention discloses a rowing machine, comprising: a machine head, comprising a frame and a reel structure, a flywheel structure, a brake structure and an adjustment structure installed on the frame, wherein the flywheel structure is transmission-connected with the reel structure, the brake structure has a first connection end and a first free end flexibly connected with the first connection end, a friction block and a magnetic block are arranged on the inner side of the first free end for preventing the flywheel structure from rotating, the adjustment structure adjusts the first free end to swing toward the direction close to the outside of the flywheel structure to increase the resistance between the friction block and the magnetic block and the flywheel structure, and swings toward the direction away from the outside of the flywheel structure to reduce the resistance between the friction block and the magnetic block and the flywheel structure; a slide, the front end of which is connected to the frame, and a cushion structure that can reciprocate along its length direction is slidably connected to the slide. The rowing machine can perform dual resistance adjustment of friction resistance and magnetic resistance, and the resistance form is more diverse, which has strong practicality.

Description

Technical Field

[0001] The present invention relates to the field of fitness equipment, and particularly to a rowing machine. Background Art

[0002] A rowing machine, also known as a rowing oar, rowing machine, and rowing oar machine, is a fitness equipment used to simulate the water rowing sport for the purpose of fitness exercise, which has a good effect on strengthening the muscles of the legs, waist, upper limbs, chest, and back. Each time of rowing, the upper limbs, lower limbs, waist and abdomen, and back will complete a complete contraction and extension during the process, and a full-body aerobic exercise effect of muscles can be achieved. In recent years, with the booming development of the sports fitness industry, the types and styles of rowing machines have become more and more diverse, including various types such as fan magnetic control dual-system rowing machines, hydraulic resistance rowing machines, air resistance rowing machines, magnetic resistance rowing machines, water resistance rowing machines, and left-right swing rowing machines.

[0003] The resistance of the existing rowing machine is usually one of various resistances such as air resistance, magnetic resistance, water resistance, frictional resistance, and hydraulic resistance, and the resistance form is relatively single. For example, a utility model patent (publication number: CN208405901U) named "Magnetic Control Inertia Wheel Structure of Rowing Machine" authorized and publicly disclosed on January 22, 2019 in China includes an aluminum part fixed shaft. A plane fixed to the magnet fixed disk is provided at the maximum outer diameter of the aluminum part fixed shaft. Multiple magnets are evenly distributed on the outer diameter of the magnet fixed disk. A locking piece is on the right side of the magnet fixed disk; an aluminum ring is on the outer diameter of the magnet fixed disk. The aluminum ring and the steel plate wheel are fixed together. On the steel plate wheel, a fixed outer ring protrudes on the side facing the magnet fixed disk; a force-applying locking piece is on the right side of the steel plate wheel. The left half part of the force-applying locking piece is an insertion end, and the right half part is a threaded end. This technical solution drives the swing block to rotate by pulling the pulling hole with a steel cable. The swing block drives the movable block to move up and down under the limitation of the positioning groove through the force-applying rod, so as to adjust the gap between the magnet and the aluminum ring, and thus realize the resistance size of the aluminum ring cutting the magnetic field, so as to provide different magnitudes of magnetic resistance during the user's rowing exercise.

[0004] It can be seen that the existing rowing machine still has the following deficiencies: the provided resistance is usually only one kind, and the resistance form is relatively single. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a rowing machine that can perform dual resistance adjustment of frictional resistance and magnetic resistance, with a more diverse resistance form and strong practicability.

[0006] To solve the above technical problems, the present invention is solved by the following technical solutions:

[0007] A rowing machine, characterized in that it includes:

[0008] A machine head, comprising a frame and a reel structure, a flywheel structure, a brake structure and an adjustment structure mounted on the frame, wherein the flywheel structure is transmission-connected to the reel structure and can rotate synchronously with the reel structure when the reel structure rotates in a first direction to release a pull rope, wherein the brake structure comprises a first connecting end and a first free end flexibly connected to the first connecting end, wherein a friction block and a magnetic block for preventing the flywheel structure from rotating are arranged on the inner side of the first free end, and wherein the adjustment structure increases the resistance between the friction block and the magnetic block and the flywheel structure by regulating the first free end to swing toward a direction close to the outer side of the flywheel structure, and reduces the resistance between the friction block and the magnetic block and the flywheel structure by swinging toward a direction away from the outer side of the flywheel structure;

[0009] The front end of the slide is connected to the frame, and the slide is slidably connected with a cushion structure which can move back and forth along the length direction thereof.

[0010] Preferably, when the first free end swings until the friction block abuts against the outer side of the flywheel structure, a friction resistance for preventing the flywheel structure from rotating is generated between the friction block and the outer side of the flywheel structure, and the magnetic block is arranged at an interval with the outer side of the flywheel structure and generates a magnetic resistance for preventing the flywheel structure from rotating;

[0011] When the first free end swings until the friction block is separated from the outer side of the flywheel structure, the magnetic block is spaced apart from the outer side of the flywheel structure and generates a second magnetic resistance force for preventing the flywheel structure from rotating, and the second magnetic resistance force is smaller than the first magnetic resistance force.

[0012] Preferably, the first free end is configured as an arc-shaped plate structure arranged along the outer side of the flywheel structure, the friction block and the magnetic block are fixedly arranged along the inner concave surface of the arc-shaped plate structure, and the friction block is arranged on an end of the first free end away from the first connecting end, the magnetic block is arranged on an end of the first free end close to the first connecting end, and the adjustment structure is arranged close to an end of the outer side of the first free end away from the first connecting end.

[0013] Preferably, the adjustment structure includes an extrusion member and an adjustment member, the outer side of the first free end and the inner side of the adjustment member can respectively abut against the inner and outer sides of the extrusion member, the extrusion member has a second connecting end and a movable second free end, the abutment surface on the extrusion member for contacting the outer side of the first free end is located between the second connecting end and the second free end, the second free end can rotate along axis one relative to the first free end and push the first free end to swing toward or away from the outer side of the flywheel structure, the adjustment member can move along axis two relative to the second free end and push the second free end to swing toward or away from the outer side of the flywheel structure, the axis one is arranged on the second connecting end, and the axis one is located on the plane between the first free end and the adjustment member, and the axis two is arranged perpendicular to the axis one.

[0014] Preferably, the extrusion member is arranged perpendicular to the braking structure, the first axis is arranged parallel to the braking structure, the adjusting structure further includes a fixing member arranged between the extrusion member and the adjusting member, the second connection end is rotatably connected to the fixing member along the first axis, and the adjusting member is telescopically connected to the fixing member along the second axis.

[0015] Preferably, the machine head further includes a machine shell having a front shell plate and a rear shell plate. The upper end of the rear shell plate is arranged to incline forward and forms a first angle with the medium surface. The upper end of the front shell plate is arranged to incline backward and forms a second angle with the medium surface. An installation area for installing the frame is provided between the front and rear shell plates. The reel structure, the flywheel structure, the braking structure, and the adjusting structure are arranged near the bottom of the installation area.

[0016] Preferably, a part of the structure on the outer wall of the rear shell plate forms a foot pedal area. A rope body channel through which the pull rope can pass out to the outside and an adjusting channel through which the outer end of the adjusting member can pass out to the outside are also provided through the rear shell plate. The rope body channel is arranged above the foot pedal area and the adjusting channel.

[0017] Preferably, a handle is connected to the outer end of the pull rope. A bracket is further arranged on the outer wall of the rear shell plate. The bracket includes two handle bases respectively arranged near the left and right sides of the outside of the rope body channel and a mobile device base connected to the upper ends of the two handle bases. The handle base is recessed inward from the outer end face to form a handle groove for positioning the handle. When the handle is in the retracted state, the positions on both sides of the pull rope are respectively abutted against the handle grooves of the two handle bases.

[0018] Preferably, the width of the front shell plate is equal to the width of the rear shell plate. The machine shell further includes a left shell plate connected between the left sides of the front and rear shell plates and a right shell plate connected between the right sides of the front and rear shell plates. The carriage includes two parallel and spaced rail rods. The front ends of the two rail rods are respectively rotatably connected to the outside of the left and right shell plates through a rotating assembly. When the rail rods rotate relative to the machine head to stand up, the carriage is in the retracted state.

[0019] Preferably, the rotating assembly includes:

[0020] A hinged structure. The first position at the front end of the rail rod is connected to the third position of the frame through the hinged structure and can rotate relative to the machine head around the hinge axis of the hinged structure;

[0021] A telescopic gas spring. The gas spring includes a cylinder body and a piston rod that are piston-connected to each other. The other ends of the cylinder body and the piston rod are respectively rotatably connected to the second position at the front end of the rail rod and the fourth position of the frame. When the rail rod rotates around the hinge axis, the piston rod makes a piston movement relative to the rod body under the push or pull of the air pressure in the cylinder body;

[0022] The second position is located at a side of the first position away from the front end of the slide rail rod and is spaced apart from the first position. The fourth position is located at the rear side of the third position and is spaced apart from the third position.

[0023] The present invention achieves the following beneficial effects: the rowing machine provided by the present invention comprises a head and a sliding frame connected to a frame inside the head at the front end, the head comprising a frame and a reel structure, a flywheel structure, a brake structure and an adjustment structure installed on the frame, the flywheel structure is transmission-connected to the reel structure, and can rotate synchronously with the reel structure when the reel structure rotates in a first direction to release a pull rope, the brake structure has a first connecting end and a first free end flexibly connected to the first connecting end, a friction block and a magnetic block are arranged on the inner side of the first free end for preventing the flywheel structure from rotating, when the user pulls out the pull rope, the reel structure rotates in the first direction to release the pull rope wound thereon, and at the same time, the flywheel structure rotates under the resistance of the friction block and the magnetic block, thereby providing a fitness resistance for the reel structure rotating synchronously therewith to prevent the pull rope from being pulled out, and the first free end is regulated by the adjustment structure. The first free end swings toward the direction close to the outer side of the flywheel structure, thereby increasing the contact area between the friction block and the outer side of the flywheel structure, thereby increasing the friction resistance between the friction block and the flywheel structure, and reducing the distance between the magnetic block and the outer side of the flywheel structure, thereby increasing the magnetic resistance between the magnetic block and the flywheel structure. Similarly, the first free end is regulated by the adjustment structure to swing toward the direction away from the outer side of the flywheel structure, thereby reducing or even eliminating the contact area between the friction block and the outer side of the flywheel structure, thereby reducing or even eliminating the friction resistance between the friction block and the outer side of the flywheel structure, and increasing the distance between the magnetic block and the outer side of the flywheel structure, thereby reducing the magnetic resistance between the magnetic block and the flywheel structure. Therefore, friction resistance and magnetic resistance are provided at the same time and dual resistance size is adjusted. The resistance form is more diverse, which is suitable for fitness needs of various resistance intensities and has strong practicality.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 The figure is a schematic diagram of the overall structure of a rowing machine according to an embodiment of the present invention.

[0027] Figure 2 for Figure 1 Exploded diagram.

[0028] Figure 3Structural schematic of the frame according to an embodiment of the present invention Figure 1 .

[0029] Figure 4 Structural schematic of the flywheel structure, braking structure and adjustment structure according to an embodiment of the present invention

[0030] Figure 5 It is Figure 4 exploded view of

[0031] Figure 6 Structural schematic of the braking structure and adjustment structure according to an embodiment of the present invention

[0032] Figures 7 - 8 Structural schematic of the machine head according to an embodiment of the present invention

[0033] Figure 9 It is Figure 7 exploded view of

[0034] Figure 10 Structural schematic of the frame according to an embodiment of the present invention Figure 2 .

[0035] Figure 11 Exploded structural schematic of the second housing and the bracket according to an embodiment of the present invention

[0036] Figures 12 - 13 Structural schematic of the bracket according to an embodiment of the present invention

[0037] Figure 14 Exploded partial structural schematic of the rowing machine according to an embodiment of the present invention

[0038] Figure 15 Schematic diagram of the storage state of the sliding carriage of the rowing machine according to an embodiment of the present invention

[0039] Figure 16 Structural schematic of the movable structure according to an embodiment of the present invention

[0040] Figure 17 Structural schematic of the control device according to an embodiment of the present invention Detailed implementation manners

[0041] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0043] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0045] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second" and similar terms used in the specification and claims of the present invention for patent application do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "one" do not denote a quantity limitation, but mean that there is at least one.

[0046] Such as Figures 1 - 17As shown, as an embodiment of the present invention, a rowing machine is disclosed, including a head 1 and a slide 2 whose front end is connected to a frame 11 in the head 1, and a cushion structure 5 that can make a reciprocating motion along its length direction is slidably connected to the slide 2 for human body to sit on. The head 1 includes a frame 11 and a reel structure 31, a flywheel structure 43, a brake structure 41 and an adjustment structure 42 installed on the frame 11, wherein the flywheel structure 43 is made of a magnetic material that can be attracted by a magnet, which is a prior art commonly used in magnetic resistance rowing machines and will not be described in detail. The flywheel structure 43 is transmission-connected to the reel structure 31, and can rotate synchronously with the reel structure 31 when the reel structure 31 rotates in a first direction to release the pull rope 32. The braking structure 41 is arranged close to the flywheel structure 43, and has a first connecting end 411 and a first free end 412 flexibly connected to the first connecting end 411, that is, the first free end 412 can be slightly deflected relative to the first connecting end 411 and return to the position before the deflection under the elastic force. Preferably, the braking structure 41 is made of metal material, which is strong and durable. Of course, in other embodiments, the braking structure 41 can also be made of other flexible materials such as plastic. A friction block 413 and a magnetic block 414 for preventing the flywheel structure 43 from rotating are provided on the inner side of the first free end 412. When the user pulls out the pull rope 32, the reel structure 31 rotates along a first direction to release the pull rope 32 wound thereon. At the same time, the flywheel structure 43 rotates under the resistance of the friction block 413 and the magnetic block 414, thereby providing a fitness resistance for the reel structure 31 rotating synchronously therewith to prevent the pull rope 32 from being pulled outward. When the user loosens the pull rope 32, the reel structure 31 rotates along a second direction opposite to the first direction driven by its internal retraction structure to wind the pull rope 32 thereon, thereby completing a rowing action. The first free end 412 is regulated by the adjustment structure 42 to swing toward the direction close to the outer side of the flywheel structure 43, thereby increasing the contact area between the friction block 413 and the outer side of the flywheel structure 43, thereby increasing the friction resistance between the friction block 413 and the flywheel structure 43, and at the same time reducing the distance between the magnetic block 414 and the outer side of the flywheel structure 43, thereby increasing the magnetic resistance between the magnetic block 414 and the flywheel structure 43. Similarly, the first free end 412 is regulated by the adjustment structure 42 to swing toward the direction away from the outer side of the flywheel structure 43, thereby reducing or even eliminating the contact area between the friction block 413 and the outer side of the flywheel structure 43, thereby reducing or even eliminating the friction resistance between the friction block 413 and the outer side of the flywheel structure 43, and at the same time increasing the distance between the magnetic block 414 and the outer side of the flywheel structure 43, thereby reducing the magnetic resistance between the magnetic block 414 and the flywheel structure 43, thereby providing friction resistance and magnetic resistance at the same time and adjusting the size of dual resistance, so that the resistance form is more diverse, suitable for fitness needs of various resistance intensities, and has strong practicality.In this embodiment, the friction block 413 is configured as a structure capable of generating frictional force, such as wool felt, rubber, silica gel, or cowhide, and the magnetic block 414 is configured as a structure capable of generating magnetic force, such as a magnet. The structure is simple and the cost is low.

[0047] As Figure 3 shown, in some specific embodiments, the flywheel structure 43 is drivingly connected to the reel structure 31 through a transmission shaft 44. Specifically, the reel structure 31 is rotatably connected to the transmission shaft 44 through a one-way bearing, and the flywheel structure 43 is non-rotatably connected to the transmission shaft 44. The setting of the one-way bearing enables the reel structure 31 to rotate in the first direction to release the drawstring 32 wound thereon, that is, when pulling out the drawstring 32 outward, the one-way bearing is non-rotatably connected to the transmission shaft 44, so as to drive the flywheel structure 43 to rotate synchronously under frictional resistance and / or magnetic resistance through the transmission shaft 44. When the reel structure 31 rotates in the second direction opposite to the first direction to wind the drawstring 32 thereon, that is, when retracting the drawstring 32 inward, the one-way bearing is rotatably connected to the transmission shaft 44, so that only the reel structure 31 itself rotates around the transmission shaft 44. At this time, no resistance is generated between the flywheel structure 43 and the friction block 413 or the magnetic block 414, and rapid recovery of the drawstring 32 can be achieved.

[0048] As Figures 3 - 5 shown, in some specific embodiments, when the first free end 412 swings to abut against the outer side of the friction block 413 and the flywheel structure 43, the friction block 413 and the outer side of the flywheel structure 43 come into contact with each other and generate a frictional resistance for preventing the flywheel structure 43 from rotating. At the same time, a first magnetic resistance for preventing the flywheel structure 43 from rotating is generated between the magnetic block 414 and the outer side of the flywheel structure 43. Thus, a certain intensity of fitness resistance is provided during the rotation of the flywheel structure 43 through the combined action of the frictional resistance and the first magnetic resistance. When the first free end 412 swings to abut against the outer side of the friction block 413 and the flywheel structure 43, the magnetic block 414 and the outer side of the flywheel structure 43 are arranged at intervals, that is, the magnetic block 414 always maintains a distance from the outer side of the flywheel structure 43, so as to prevent the flywheel structure 43 from being magnetically attracted to the magnetic block 414 or rubbing against the magnetic block 414, thereby hindering the rotational movement of the flywheel structure 43.

[0049] As Figures 3 - 5As shown, in some specific embodiments, when the first free end 412 swings to a position where the friction block 413 is separated from the outer side of the flywheel structure 43, the frictional resistance decreases to zero. At the same time, a second magnetic resistance is generated between the magnetic block 414 and the outer side of the flywheel structure 43 to prevent the flywheel structure 43 from rotating. At this time, a certain intensity of fitness resistance can be provided only by this second magnetic resistance during the rotation of the flywheel structure 43. And because the distance between the magnetic block 414 and the outer side of the flywheel structure 43 increases, this second magnetic resistance is less than the first magnetic resistance, that is, only this second magnetic resistance provides a very slight resistance during the rotation of the flywheel structure 43, which is suitable for children's fitness and has a wide range of applications. Of course, in some other embodiments, when the first free end 412 swings to a position where the friction block 413 is separated from the outer side of the flywheel structure 43, the magnetic resistance between the magnetic block 414 and the outer side of the flywheel structure 43 can also be set to decrease to zero, so that the flywheel structure 43 is not affected by resistance during rotation.

[0050] As Figure 4 shown in FIG. 5 or 6, in some specific embodiments, the first free end 412 is arranged as an arc-shaped plate structure along the outer side of the flywheel structure 43. Compared with a straight plate structure, the contact area and resistance can be larger to provide a greater intensity of fitness resistance. The friction block 413 and the magnetic block 414 are fixedly arranged along the concave surface of the arc-shaped plate structure and can be fixedly connected to the arc-shaped plate structure by means such as bonding or connecting with connectors, and the connection is stable and not easy to fall off. Of course, in some other embodiments, the friction block 413 or the magnetic block 414 can also be detachably connected to the arc-shaped plate structure by means of a snap structure, etc., which is convenient for replacement. The two sides of the arc-shaped plate structure also extend towards the concave surface to be provided with retaining pieces to prevent the friction block 413 or the magnetic block 414 from shifting towards the two sides of the arc-shaped plate structure, and the connection stability is better. The friction block 413 is arranged at one end of the first free end 412 away from the first connection end 411, and the magnetic block 414 is arranged at one end of the first free end 412 close to the first connection end 411. The adjusting structure 42 is arranged close to one end of the outer side of the first free end 412 away from the first connection end 411. Compared with arranging the adjusting structure 42 close to one end of the outer side of the first free end 412 close to the first connection end 411, according to the lever principle, it is more labor-saving for the adjusting structure 42 to drive the first free end 412 to swing, which is convenient for easily adjusting the magnitudes of the frictional resistance and the magnetic resistance. And the adjusting structure 42 is arranged close to the friction block 413, and can apply a more positive driving force to the friction block 413, making the frictional resistance more stable. The first connection end 411 is arranged as a sleeve structure with internal threads, and the axis direction of this sleeve structure is perpendicular to the braking structure 41 and can be installed on the frame 11 through a bolt with external threads, with a simple structure and convenient assembly.

[0051] As Figure 6As shown, in some specific embodiments, a plurality of friction blocks 413 are provided. In this embodiment, four friction blocks 413 are provided, and the four friction blocks 413 are arranged in sequence along the length direction of the concave surface of the arc-shaped plate structure. One magnetic block 414 is provided, and the magnetic block 414 is arranged along the length direction of the concave surface of the arc-shaped plate structure of the friction block 413 closest to the most distal end. When the adjusting structure 42 drives the first free end 412 to swing towards the flywheel structure 43, the friction blocks 413 on the concave surface of the arc-shaped plate structure are successively abutted against the outer side of the flywheel structure 43 one by one, thereby gradually increasing the frictional resistance between the friction block 413 and the flywheel structure 43, and at the same time increasing the magnetic resistance between the magnetic block 414 and the flywheel structure 43. When the adjusting structure 42 drives the first free end 412 to swing away from the flywheel structure 43, the friction blocks 413 on the concave surface of the arc-shaped plate structure are successively separated from the outer side of the flywheel structure 43 one by one, thereby gradually reducing the frictional resistance between the friction block 413 and the flywheel structure 43, and at the same time reducing the magnetic resistance between the magnetic block 414 and the flywheel structure 43. Compared with the gear-type adjustment method, the resistance size changes linearly, so that the resistance size can be adjusted step by step, there are more resistance values, and the applicable range is wider. Of course, in other embodiments, the friction block 413 may also be provided with only one or two, three or other numbers, and the magnetic block 414 may also be provided with two, three or other numbers to meet different requirements.

[0052] As Figures 4 - 5As shown, in some specific embodiments, the adjusting structure 42 includes a pressing member 421 and an adjusting member 422. The outer side of the first free end 412 and the inner side of the adjusting member 422 can respectively abut against the inner and outer sides of the pressing member 421. The adjusting member 422 can be used to push the pressing member 421 to swing, and then the pressing member 421 can be used to push the first free end 412 to swing, so as to adjust the magnitudes of the frictional resistance and the magnetic resistance. Specifically, the first free end 412 can be slightly deflected under the thrust of the pressing member 421 to swing in a direction away from the pressing member 421, and under the elastic action of the flexible connection, it can return to the position before deflection and push the pressing member 421 to move in a direction away from the first connection end 411. The setting of the flexible connection is simple and practical in structure and low in cost. In this embodiment, the separate structural design of the adjusting structure 42 and the braking structure 41 enables the braking structure 41 not to easily drive the adjusting structure 42 to deflect when deflecting under the reaction force of the flywheel structure 43, thereby improving the stability of the adjusting structure 42, ensuring the smoothness of the adjustment process, and being more durable. In addition, the pressing member 421 has a second connection end 4211 and a movable second free end 4212. The second free end 4212 can rotate relative to the first free end 412 along the axis 100 and push the first free end 412 to swing in a direction close to or away from the outer side of the flywheel structure 43. The adjusting member 422 can move relative to the second free end 4212 along the axis 200 and push the second free end 4212 to swing in a direction close to or away from the outer side of the flywheel structure 43. The axis 100 is provided on the second connection end 4211 and is located on the plane between the first free end 412 and the adjusting member 422, so that the second free end 4212 can swing along the axis 100 to be close to and press the first free end 412 or away from the first free end 412. The axis 200 is perpendicularly arranged to the axis 100, which is convenient for pushing the second free end 4212 to swing. Compared with directly applying a force on the first free end 412 by the adjusting member 422, in this embodiment, through the setting of the intermediate pressing member 421, by applying a force on the second free end 4212 of the intermediate pressing member 421 by the adjusting member 422, and then applying a force on the first free end 412 by the intermediate pressing member 321. Since the abutting surface of the pressing member 421 for contacting the outer side of the first free end 412 is located between the second connection end 4211 and the second free end 4212, the force arm of the pressing member 421 for receiving the force is long. According to the principle that the moment is equal to the product of the force and the force arm, therefore, when the required force of the first free end 412 is the same, the force application requirement for the adjusting member 422 is smaller, and the resistance adjustment is easier and more labor-saving.Moreover, the abutting surface on the pressing member 421 for contacting the outside of the first free end 412 is located between the second connecting end 4211 and the second free end 4212. That is, the second connecting end 4211 and the second free end 4212 apply forces to the first free end 412 respectively. Compared with the way of directly applying force to the first free end 412 through the adjusting member 422 without setting the pressing member 421, the force application direction of the adjusting structure 42 and the direction of the reaction force it receives are more stable and less likely to tilt. Thus, it is convenient to stably adjust the magnitudes of the frictional resistance and the magnetic resistance. Moreover, the second connecting end 4211 and the second free end 4212 of the pressing member 421 jointly bear the reaction force of the first free end 412, and relatively reduce the reaction force received by the adjusting member 422, making the structure of the adjusting member 422 more stable and durable.

[0053] As Figure 4 shown, in some specific embodiments, the pressing member 421 is perpendicularly arranged with respect to the braking structure 41, and the axis 100 is parallel to the braking structure 41, making the thrust of the pressing member 421 on the first free end 412 more direct, powerful, and uniform, and the structure is simple and convenient for assembly. The pressing member 421 is arranged in a rod structure, and the second connecting end 4211 and the second free end 4212 are respectively the two ends of the rod structure, with a simple structure and convenient for processing. Of course, in other embodiments, the pressing member 421 can also be arranged at other angles with respect to the braking structure 41 and can also be used to push the first free end 412 to move.

[0054] As Figure 5As shown, in some specific embodiments, the adjusting structure 42 further includes a fixing member 423 disposed between the pressing member 421 and the adjusting member 422. The second connection end 4211 is rotatably connected to the fixing member 423 through a first connecting member 4213, and the adjusting member 422 is telescopically connected to the fixing member 423 through a first sleeve 4223. The fixing member 423 is provided as a horizontal bar and a vertical bar arranged perpendicular to each other. The second connection end 4211 is rotatably connected to the vertical bar through the first connecting member 4213, and the adjusting member 422 is telescopically connected to the horizontal bar through the first sleeve 4223. The structure is simple and cost-saving. Of course, in some other embodiments, the fixing member 423 can also be provided with only a horizontal bar, so that the second connection end 4211 and the adjusting member 422 are both connected to the horizontal bar, or provided in other shapes and structures, which can also be used for the installation of the pressing member 421 and the adjusting member 422. The first connecting member 4213 is provided in a U-shaped plate structure, including two spaced-apart hinge plates one and a connecting plate one connected between one ends of the two hinge plates one. The outer wall of the connecting plate one is fixedly connected to the inner side of the fixing member 423, preferably by welding, and the structure is more stable. An articulated shaft one is provided between the two hinge plates one, and the articulated shaft one is arranged along axis one 100. The second connection end 4211 is hinged on the articulated shaft one and is rotatably connected to the fixing member 423, so that the pressing member 421 as a whole can rotate along axis one 100. In this embodiment, the fixing member 423 is provided as a part of the frame 11, thus simplifying the structure and facilitating assembly. The first connection end 411 is fixedly connected to the frame 11 through a second connecting member 127. The second connecting member 127 is provided in a U-shaped plate structure, including two spaced-apart hinge plates two and a connecting plate two connected between one ends of the two hinge plates two. The outer wall of the connecting plate two is fixedly connected to the frame 11, preferably by welding, and the structure is more stable. The first connection end 411 is located between the two hinge plates two and is fixedly connected to the frame 11 by fastening connection with the two hinge plates two through a bolt with an external thread. The structure is simple and the assembly is convenient.The first sleeve 4223 penetrates through the inner and outer sides of the fixing member 423 and is fixedly connected to the fixing member 423. The first sleeve 4223 is arranged along the second axis 200. The adjusting member 422 extends into the first sleeve 4223 and is threadedly connected to the first sleeve 4223. By rotating the adjusting member 422 forward or backward, the adjusting member 422 can perform telescopic movement relative to the fixing member 423. Specifically, by rotating the adjusting member 422 forward, the adjusting member 422 moves in the direction of extending into the fixing member 423 and pushes the second free end 4212 in the direction away from the fixing member 423, and then the pressing member 421 pushes the first free end 412 in the direction away from the pressing member 421, thereby increasing the frictional resistance and magnetic resistance. Or by rotating the adjusting member 422 backward, the adjusting member 422 moves in the direction of extending out of the fixing member 423, reducing the thrust of the adjusting member 422 on the pressing member 421. Under the reaction force of the flexible connection between the first free end 412 and the first connection end 411, the pressing member 421 is pushed to move in the direction away from the first free end 412, that is, the second free end 4212 moves in the direction close to the fixing member 423, thereby reducing the frictional resistance and magnetic resistance. The adjusting member 422 and the fixing member 423 are connected by a threaded connection, which makes its structure simple and practical. The telescopic length of the adjusting member 422 relative to the fixing member 423 can be locked at any position through thread matching, and the resistance can be adjusted arbitrarily within the resistance adjustment range, meeting various different resistance requirements. Of course, in some other embodiments, the second connection end 4211 can also be rotatably connected to the fixing member 423 along the first axis 100 through other connecting members or directly, or the adjusting member 422 can also be threadedly connected to the fixing member 423 through other connecting members or directly, or connected by other telescopic structures, which can also make the pressing member 421 rotate along the first axis 100 and the adjusting member 422 perform telescopic movement along the second axis 200.

[0055] Such as Figure 2As shown in FIGS. 4 or 5, in some specific embodiments, the head 1 further includes a housing 12, and the frame 11 is arranged inside the housing 12. The housing 12 is used for dust prevention and isolation of the frame 11 and components such as the reel structure 31, the flywheel structure 43, the braking structure 41, and the adjusting structure 42 mounted on the frame 11. The adjusting member 422 includes an adjusting portion 4221 and a knob portion 4222. Among them, the adjusting portion 4221 penetrates through the fixing member 423 along the axis 200. The adjusting portion 4221 is arranged as a threaded rod structure with an external thread and is threadedly connected to the internal thread provided on the inner wall of the first sleeve 4223 through the external thread. The inner side of the adjusting member 422 can abut against the outer side of the second free end 4212 to push the second free end 4212 and the pressing member 421 as a whole to rotate around the axis 100. In this embodiment, by the way that the adjusting member 422 abuts against the second free end 4212 to push the second free end 4212 to swing, compared with the way of rotatably connecting the inner end of the adjusting member 422 to the second free end 4212 or other movable connection ways to push the second free end 4212 to move, the structure of the adjusting member 422 is relatively simple, which is convenient for assembly and production and saves costs. Of course, in some other embodiments, the inner end of the adjusting member 422 can also be set to be rotatably connected to the second free end 4212 or connected through other movable connection structures, which can also push the second free end 4212 to move. The knob portion 4222 is connected to the outer end of the adjusting portion 4221, and the knob portion 4222 is located outside the housing 12, which is convenient for the user to control the rotation of the adjusting portion 4221 to adjust the magnitudes of the frictional resistance and the magnetic resistance.

[0056] As Figure 4 shown, in some specific embodiments, the axis 100 is spaced from the fixing member 423, and when the pressing member 421 rotates to be parallel to the inner side of the fixing member 423, the pressing member 421 exerts a thrust on the first free end 412. That is, the hinge axis 1 provided between the two first hinge plates is arranged at a distance from the first connecting plate and the fixing member 423, and the vertical distance between the plane where the pressing member 421 is located when it rotates to be parallel to the inner side of the fixing member 423 and the inner side of the fixing member 423 is greater than the vertical distance between the first free end 412 and the inner side of the fixing member 423 when the first free end 412 is not under the thrust of the pressing member 421. That is, the position of the axis 100 is closer to the perpendicular bisector of the nearest position and the farthest position where the first free end 412 can move, so that the distance that the first free end 412 displaces along the abutting surface on the pressing member 421 for contacting the outer side of the first free end 412 when the pressing member 421 pushes the first free end 412 to move is shorter, so that the stability of the pushing process is better. At the same time, the adjusting portion 4221 can be set shorter, so that the stability of the structure of the adjusting member 422 is also better, which is convenient for adjusting the resistance. Of course, in some other embodiments, the axis 100 can also be directly arranged on the fixing member 423 or arranged adjacent to the fixing member 423, and it can also make the rotatably arranged pressing member 421 on it rotate around the axis 100.

[0057] As Figure 5 shown, in some specific embodiments, the outer end of the first sleeve 4223 protrudes outside the fixing member 423. On the one hand, it can extend the connection area between the adjusting portion 4221 and the first sleeve 4223 and increase the contact area therebetween, improving the stability during the adjustment process. On the other hand, the part of the outer end of the first sleeve 4223 protruding outside the fixing member 423 can also extend into the adjustment channel 1222 of the machine housing 12, preventing the adjusting portion 4221 from directly contacting the machine housing 12 and the adjustment channel 1222, thus avoiding wear or other damages and prolonging the service life of the rowing machine. Of course, in some other embodiments, the outer end of the first sleeve 4223 may not protrude outside the fixing member 423 and can also be used for threaded connection with the adjusting portion 4221.

[0058] As Figure 5As shown, in some specific embodiments, the adjusting structure 42 further includes a positioning member 424. The outer end of the positioning member 424 is fixedly connected to the fixing member 423, and a U-shaped groove is formed outwardly at the inner end for limiting the swinging direction of the first free end 412. That is, the first free end 412 is located in the U-shaped groove and is limited on both sides by the U-shaped groove. Under the thrust of the pressing member 421 or the reaction force of its flexible connection, both sides of the first free end 412 approach or move away from the fixing member 423 along the U-shaped groove. That is, the U-shaped groove defines the movement path of the first free end 412, which can prevent the movement path of the first free end 412 from shifting with the rotation of the pressing member 421, so as to stably adjust the swinging direction of the braking structure 41 and the magnitudes of the frictional resistance and magnetic resistance. In addition, the adjusting structure 42 further includes a supporting member 425. The outer end of the supporting member 425 is fixedly connected to the fixing member 423, and the inner end extends inwardly. The bottom surface of the second free end 4212 abuts against the surface of the inner end of the supporting member 425. That is, the bottom surface of the second free end 4212 is placed on the surface of the inner end of the supporting member 425. When the second free end 4212 moves under the thrust of the adjusting member 422 or the reaction force of the flexible connection of the first free end 412, its bottom surface slides on the surface of the inner end of the supporting member 425. The supporting member 425 is used for supporting the second free end 4212 to prevent the pressing member 421 from affecting its stable rotation about the axis 100 due to its own gravity. Preferably, the positioning member 424 and the supporting member 425 are arranged as plate structures, and the fixing connection between the positioning member 424 and the fixing member 423 and between the supporting member 425 and the fixing member 423 is achieved by welding, which has good connection firmness. Of course, in some other embodiments, bonding, screws and other connecting members or other fixing connection methods can also be used to achieve the fixed connection between the positioning member 424 or the supporting member 425 and the fixing member 423. In this embodiment, the positioning member 424 is arranged on the top side of the pressing member 421, and the supporting member 425 is arranged on the bottom side of the pressing member 421. That is, the pressing member 421 is limited between the positioning member 424 and the supporting member 425, so that the movement path of the pressing member 421 is limited within the plane between the positioning member 424 and the supporting member 425, further improving the stability of the rotation path of the pressing member 421 about the axis 100. Of course, in some other embodiments, only any one of the positioning member 424 or the supporting member 425 can be provided, so that the adjusting structure 42 has partial above effects.

[0059] As Figures 7 - 8As shown, in some specific embodiments, the housing 12 includes a front housing plate 121 and a rear housing plate 122. The upper end of the rear housing plate 122 is arranged to incline forward and forms a first angle A with a medium surface such as the ground or the floor surface. The upper end of the front housing plate 121 is arranged to incline backward and forms a second angle B with a medium surface such as the ground or the floor surface. An installation area 300 for installing the frame 11 is provided between the front and rear housing plates. In this embodiment, the distance between the front and rear housing plates gradually increases from top to bottom, and the installation area 300 between the front and rear housing plates is a triangular space or a space similar to a triangle, enhancing the stability when the whole head 1 is placed on a medium surface such as the ground. The reel structure 31, the flywheel structure 43, the braking structure 41, and the adjustment structure 42 are arranged near the bottom of the installation area 300. Since the space at the bottom of the installation area 300 is relatively large, components such as a relatively large-sized reel structure 31, flywheel structure 43, braking structure 41, and adjustment structure 42 can be installed. A guide wheel 14 is arranged between the upper rear of the reel structure 31 and the rope passage 1221. The guide wheel 14 is installed on the frame 11 and is used to guide the pulling rope 32 to move along its path. In this embodiment, relatively large-sized components such as the reel structure 31, flywheel structure 43, braking structure 41, and adjustment structure 42 are arranged in the lower part of the installation area 300, and the movement path of the pulling rope 32 is arranged in the upper part of the installation area 300, which can make full use of the space of the installation area 300, make the spatial arrangement between various parts compact, thereby reducing the volume of the head 1 and facilitating storage, packaging, or transportation.

[0060] As Figure 7As shown, in some specific embodiments, a partial structure on the outer wall of the rear shell plate 122 forms a footrest area 13, that is, the footrest and the rear shell plate 122 are set as an integral structure, thus greatly simplifying the structure and saving the manufacturing cost. At the same time, the footrest area 13 is not easy to move during the movement process, the structure has better stability, is not easy to be damaged, extends the service life, and has strong practicability. The upper end of the footrest area 13 is arranged to incline forward and forms a first included angle A with the surface of a medium such as the ground, which conforms to the human body structure and is convenient for a person to pedal on the footrest area 13 during the movement process. The first included angle A and the second included angle B are less than or equal to 70°, preferably set to 45° - 65°, especially 60°, so that the size of the installation area 300 is just able to accommodate various components such as the frame 11 and the reel structure 31, the flywheel structure 43, the braking structure 41, and the adjusting structure 42 installed on the frame 11. Moreover, the included angle between the footrest area 13 and the surface of a medium such as the ground conforms to the human body structure, ensuring the comfort during pedaling. In this embodiment, both the first included angle A and the second included angle B are set to 60°, making the installation area 300 an isosceles triangle structure or a structure similar to an isosceles triangle structure, with a simple structure, being convenient for production, and having good stability when placed on the surface of a medium such as the ground. Of course, in some other embodiments, the first included angle A or the second included angle B can also be set to different angles, or set to other angles less than or equal to 70°, which can also make the size of the placement area 300 appropriate and ensure the comfort during pedaling.

[0061] As Figure 9 shown, in some specific embodiments, a rope body channel 1221 through which a pull rope 32 can pass to the outside, an adjustment channel 1222 through which the outer end of an adjustment member 422 can pass to the outside, and a strap channel 1223 through which a strap 131 can pass to the outside are also provided through the rear shell plate 122. Among them, the strap 131 is used to tie on the foot to fix the foot on the footrest area 13 for convenient movement. The rope body channel 1221, the adjustment channel 1222, and the strap channel 1223 are all arranged on the rear shell plate 122, with a simple structure and being convenient for production and processing. In addition, the rope body channel 1221 is arranged above the footrest area 13 and the adjustment channel 1222, the strap channel 1223 and the adjustment channel 1222 are arranged on the footrest area 13, and the adjustment channel 1223 is arranged between the two strap channels 1223, making the layout of each part of the structure compact, thereby saving the area size of the rear shell plate 122, so that the machine shell 12 can be set to be relatively small and is convenient for storage, packaging, or transportation.

[0062] As Figures 11 - 13As shown, in some specific embodiments, the outer end of the pull cord 32 is connected to a handle 33, and a bracket 6 is further provided on the outer wall of the rear shell plate 122. The bracket 6 includes two handle bases 61 respectively arranged near the outer left and right sides of the cord passage 1221 and a mobile device base 62 connected to the upper ends of the two handle bases 61. The bracket 6 can be used to position the handle 33 and support mobile devices such as mobile phones and tablet computers at the same time, with diverse functions. The handle base 61 is recessed inward from the outer end face to form a handle groove 611 for positioning the handle 33. When the handle 33 is in the stored state, the positions on both sides of the pull cord 32 are respectively abutted against the handle grooves 611 of the two handle bases 61, and the handle 33 can be positioned in the handle groove 611 to store the handle 33 when not in use. The design of symmetrically arranging the two handle bases 61 has better stability when abutting against the handle compared to only setting one handle base 61, is not easy to shake, and is convenient for storage, packaging or transportation. The two handle bases 61 are arranged in parallel at intervals to form an interval space 612, and the cord passage 1221 communicates with the interval space 612. The mobile device base 62 is located above the cord passage 1221, and the pull cord 32 can move in the interval space 612. In this embodiment, the mobile device base 62 is connected to the upper end of the handle base 61 and integrally formed with the handle base 61, thus simplifying the structure, enabling the handle base 61 and the mobile device base 62 to be assembled on the rear shell plate 122 at the same time, facilitating assembly, improving the assembly efficiency, and allowing users or manufacturers to perform rapid assembly, with strong practicability.

[0063] As Figure 12As shown, in some specific embodiments, the mobile device base 62 includes a support back plate 621 for supporting the back of the mobile device, a support bottom plate 622 for supporting the bottom of the mobile device, and a support front plate 623 for supporting the front of the mobile device. Among them, the support bottom plate 622 extends outward from the lower part of the support back plate 621. Preferably, the support bottom plate 622 extends outward from the lower end of the support back plate 621, so that the outer end face of the support back plate 621 can be used to abut against the back of the mobile device, increasing the contact area for supporting the back of the mobile device and having good support stability. The support front plate 623 and the support back plate 621 are arranged in parallel at intervals to form a receiving groove 624 for placing the mobile device. Both the left and right sides of the receiving groove 624 are set as open structures, that is, no other connection structures are provided between the support front plate 623 and the support back plate 621 at the left and right ends of the receiving groove 624, so that the left and right ends of the mobile device can extend beyond the receiving groove 623 for placement, and the support of mobile devices of various sizes can be realized, with a wide range of applications. The support bottom plate 622 and the handle base 61 are integrally formed. Compared with only integrally forming and connecting the lower end of the support back plate 621 with the handle base 61, the front and rear connection area between the support bottom plate 622 and the handle base 61 is wider, and the connection is stronger, making the overall structure of the bracket 6 more durable. Of course, in some other embodiments, the lower end of the support back plate 621 can also be integrally formed and connected with the upper end of the handle base 61 to further enhance the firmness of the connection between the mobile device base 62 and the handle base 61, or only integrally forming and connecting the lower end of the support back plate 621 with the upper end of the handle base 61 can also integrally form the connection between the mobile device base 62 and the handle base 61.

[0064] As Figure 13As shown, in some specific embodiments, the inner end surface of the handle base 61 and the inner end surface of the support back plate 621 are located on the same plane, that is, the inner end surface of the bracket 6 is a planar structure, which is simple in structure and convenient for production. The inner end surface of the handle base 61 and the inner end surface of the support back plate 621 abut against the outer surface of the rear shell plate 112, so that there is a large contact area between the bracket 6 and the rear shell plate 112, that is, the support area for the bracket 6 is increased, and the connection stability is good. A positioning post 6211 is convexly provided on the support back plate 621 from the inner end surface inward, and is used for mating connection with a positioning groove 1224 which is recessed inward on the surface of the rear shell plate 122 corresponding to the positioning post 6211, so as to accurately position and install the whole bracket 6 on the rear shell plate 122, which is convenient for positioning and assembly. Preferably, two positioning posts 6211 are arranged at intervals. Compared with only setting one, the positioning stability is better, it is not easy to shake, and the positioning is more accurate. The positioning groove 1224 is set as a through-hole structure penetrating the rear shell plate 122, which is simple in structure and has a wide application range. Of course, in some other embodiments, three, four or even more positioning posts 6211 can also be provided to further enhance the positioning stability and accuracy. A positioning plate 613 extends from the inner end surface of the handle base 61 towards the side close to the spaced space 612, thereby increasing the contact area between the handle base 61 and the surface of the rear shell plate 122, improving the connection stability. At the same time, an accommodation space for placing part of the structure of the handle 33 is still reserved outside the spaced space 612, making full use of the space in the spaced space 612, so that the spatial arrangement between the structures in this part of the area is relatively compact, thereby reducing the setting of the spaced space 612, that is, reducing the overall structure of the bracket 6 and saving costs. And the support bottom plate 622 is integrally formed and connected to the upper end of the positioning plate 613, further increasing the connection area between the mobile device base 62 and the handle base 61, and enhancing the firmness of the connection between the mobile device base 62 and the handle base 61.

[0065] As Figures 7 - 8As shown, in some specific embodiments, the width of the front housing plate 121 is equal to the width of the rear housing plate 122, such that the internal space of the installation area 300 is relatively large, facilitating the accommodation of a larger frame 11 and more various components mounted on the frame 11. The housing 12 further includes a left housing plate 123 connected between the left sides of the front and rear housing plates, a right housing plate 124 connected between the right sides of the front and rear housing plates, a bottom housing plate 125 connected between the bottom sides of the front and rear housing plates, and a top housing plate 126 connected between the top sides of the front and rear housing plates. The provision of the top housing plate 126 makes the connection between the top sides of the front and rear housing plates smoother compared to directly connecting the top sides of the front and rear housing plates, less likely to bump into the human body, and with better connection stability. Of course, in some other embodiments, the top sides of the front and rear housing plates can also be directly connected without providing the top housing plate 126, and the installation area 300 can still be enclosed within the housing 12. The carriage 2 includes two parallel and spaced-apart slide rail rods 21, and the seat structure 5 is slidably connected to both slide rail rods 21 simultaneously. Compared with a single slide rail rod, the seat structure 5 is more stable during the sliding process. The front ends of the two slide rail rods 21 are respectively rotatably connected to the left and right sides of the machine head 1 through a rotating assembly 7, as Figure 15 shown. When the slide rail rods 21 are rotated relative to the machine head 1 to be erected, the carriage 2 is in the storage state. At this time, the rotating assembly 7 and the slide rail rods 21 are located within the vertical space where the machine head 1 is located. At the same time, all or part of the support structure used to support the rear ends of the slide rail rods 21 can also be located within the vertical space where the machine head 1 is located, thus greatly shortening the overall space length occupied after the rowing machine is stored, making the structure between the carriage 2 and the machine head 1 more compact, occupying less space, and being more convenient for storage. In addition, the slide rail rods 21 can be directly rotated relative to the machine head 1 through the rotating assembly 7 to switch the carriage 2 between the use state and the storage state. The operation is simple, time-saving, and labor-saving, enabling a quick conversion between the use state and the storage state, and being more convenient and fast to use. Additionally, since the width of the front housing plate 121 is equal to the width of the rear housing plate 122, the left housing plate 123 and the right housing plate 124 are arranged in parallel and spaced apart. In this embodiment, the left and right housing plates are perpendicular to the front and rear housing plates. On the one hand, wider components can be accommodated within the installation area 300. On the other hand, the two slide rail rods 21 can rotate unobstructedly on the left and right sides of the machine head 1 respectively.

[0066] As Figure 9As shown, in some specific embodiments, the housing 12 is formed by enclosing a first housing 12a and a second housing 12b. The first housing 12a and the second housing 12b are detachably connected. The front housing plate 121, the front part of the left housing plate 123, the front part of the right housing plate 124, the front part of the bottom housing plate 125, and the front part of the top housing plate 126 are set as partial structures of the first housing 12a. The rear housing plate 122, the rear part of the left housing plate 123, the rear part of the right housing plate 124, the rear part of the bottom housing plate 125, and the front part of the top housing plate 126 are set as partial structures of the second housing 12b, thus simplifying the structure and facilitating the assembly or disassembly of the housing 12.

[0067] In some specific embodiments, a footrest plate (not shown in the figure) for supporting the heel is further provided behind the rear housing plate 122, arranged below the pedal area 13. There are two footrest plates, corresponding to the two straps 131 respectively. The front end of the footrest plate is fixedly connected to the bottom housing plate 125, and a limiting edge for preventing the heel from detaching is provided by extending upward at the rear end. A roller channel 1211 through which the roller 15 can extend to the outside is provided on the front housing plate 121. The roller channel 1211 is arranged on the bottom side of the front housing plate 121 to facilitate dragging the rowing machine to move its position. The handle 33 is preferably an intelligent handle, which can be used to display information such as time, pulling force value, distance, calories, frequency, number of times, and heart rate, facilitating use.

[0068] As Figures 9 - 10As shown, in some specific embodiments, the footrest area 13 is further provided with anti-slip stripes for anti-slip when pedaling. The frame 11 includes a bottom rod 111, a rear diagonal rod 112, a left side rod 113, a right side rod 114, and a top rod 115. The bottom rod 111 is arranged along the front-rear direction inside the bottom shell plate 125, the rear diagonal rod 112 is arranged along the front-rear direction inside the rear shell plate 122, the left side rod 113 is arranged along the front-rear direction inside the left shell plate 123, the right side rod 114 is arranged along the front-rear direction inside the right shell plate 124, and the top rod 115 is arranged along the left-right direction inside the top shell plate 126. Two bottom rods 111 and rear diagonal rods 112 are arranged in parallel at intervals. Two connecting rods 116 are respectively vertically arranged outward from the middle of the two bottom rods 111. The left and right side rods are respectively connected to the two connecting rods 116. The upper ends of the two rear diagonal rods 112 are respectively connected to the two ends of the top rod 115, and the lower ends are respectively connected to the two ends of the connecting rod 117. The rear ends of the two bottom rods 111 are respectively connected to the connecting rod 117. The two rollers 15 are respectively rotatably connected to the front ends of the bottom rods 111. The guide wheel 14 is rotatably connected to the middle position at the bottom of the top rod 115. The reel structure 31 and the flywheel structure 43 are rotatably connected to the bottom rod 111 and / or the left and right side rods. The vertical rod of the fixing member 423 is set as one of the rear diagonal rods 112. The front ends of the two slide rail rods 21 respectively pass through the left shell plate 123 and the right shell plate 124 through a rotating assembly 7 and are rotatably connected to the left side rod 113 and the right side rod 114 arranged inside. Hinge channels 17 through which the rotating assembly 7 can extend into the interior of the machine shell 12 are respectively arranged on the left and right shell plates.

[0069] As Figures 14 - 15As shown, in some specific embodiments, the rotating assembly 7 includes a hinged structure 71. The first position M at the front end of the slide rail rod 21 is connected to the third position E on the left or right side of the machine head 1 through the hinged structure 71 and can rotate relative to the machine head 1 around the hinge axis 400 of the hinged structure 71. The hinge axis 400 is arranged parallel to the ground, the bottom plate surface and other medium surfaces in the left-right direction of the machine head 1, so that the carriage 2 can be quickly switched between the use state and the storage state. The hinged structure 71 includes a hinge shaft 711 arranged along the hinge axis 400. The inner end of the hinge shaft 711 extends into the first hinge hole 16 opened at the third position E on the left or right side of the machine head 1 and is fixedly connected to the first hinge hole 16. In this embodiment, the first hinge hole 16 is arranged on the left rod 113 or the right rod 114 and is correspondingly arranged with the hinge channel 17 on the left shell plate 123 or the right shell plate 124. The outer end of the hinge shaft 711 extends into the second hinge hole 211 opened at the first position M at the front end of the slide rail rod 21 and is rotatably connected to the second hinge hole 211, so as to fixedly connect the hinge shaft 711 to the machine head 1 and rotatably connect the slide rail rod 21 to the hinge shaft 711. By rotating the slide rail rod 21 relative to the hinge shaft 711, the carriage 2 rotates relative to the machine head 1, and the connection is stable. Of course, in some other embodiments, the hinge shaft 711 can also be set to be rotatably connected to the first hinge hole 16 and fixedly connected to the second hinge hole 211, or set to be rotatably connected to both the first hinge hole 16 and the second hinge hole 211, which can also make the slide rail rod 21 rotatably connected to the machine head 1. Preferably, the second hinge hole 211 and the outer end of the hinge shaft 711 are tightly connected through fasteners such as screws arranged along the hinge axis 400. The tightness of the rotatable connection between the second hinge hole and the hinge shaft 711 can be controlled by adjusting the fasteners, so as to realize the rotatable connection with different tightness. In addition, the hinged structure 71 further includes a first bushing 712 and a second bushing 713. Among them, the first bushing 712 is fixedly connected in the first hinge hole 16, the inner end of the hinge shaft 711 extends into the first bushing 712 and is fixedly connected to the first bushing 712, the second bushing 713 is fixedly connected in the second hinge hole 211, the outer end of the hinge shaft 711 extends into the second bushing 713 and is rotatably connected to the second bushing 713. The settings of the first bushing 712 and the second bushing 713 increase the contact area between the first hinge hole 16, the second hinge hole 211 and the hinge shaft 711, which is convenient for stable connection and assembly. Of course, in some other embodiments, the first bushing 712 or the second bushing 713 may not be provided, and the rotatable connection between the slide rail rod 21 and the machine head 1 can also be realized.

[0070] As Figures 14 - 15As shown, in some specific embodiments, the rotating assembly 7 further includes a movable structure 72. The movable structure 72 is arranged as a telescopic structure. The two ends of the movable structure 72 are respectively rotatably connected to the second position N at the front end of the slide rail rod 21 and the fourth position F on the left or right side of the machine head 1. When the slide rail rod 21 rotates around the hinge axis 400 of the hinge structure 71, the two ends of the movable structure 72 respectively rotate relative to the second position N at the front end of the slide rail rod 21 and the fourth position F on the left or right side of the machine head 1, and adjust the length by its own telescopic movement to adapt to the different distance changes between the second position N and the fourth position F during the rotation of the slide rail rod 21. Among them, the second position N is located on the side of the first position M away from the front end of the slide rail rod 21 and is arranged at an interval from the first position M. The fourth position F is located behind the third position E and is arranged at an interval from the third position E. Both the first position M and the third position E are arranged along the hinge axis 400, so that when the carriage 2 is in the retracted state, the first position M, the second position N, the third position E, and the fourth position F form a triangular area, that is, the movable structure 72 can be used for the stable support of the carriage 2 when the carriage 2 is in the retracted state, keeping the carriage 2 in the retracted state, thus facilitating storage. The first position M is arranged at the front end of the slide rail rod 21, so that the slide rail rod 21 can rotate freely without being interfered by the surfaces of media such as the ground and the bottom plate surface during the rotation process.

[0071] As Figure 16 shown, in some specific embodiments, the movable structure 72 is arranged as a telescopic gas spring. The gas spring includes a cylinder body 721 and a piston rod 722 that are piston-connected to each other. The other ends of the cylinder body 721 and the piston rod 722 are respectively rotatably connected to the second position N and the fourth position F. According to the characteristics of the gas spring, when the carriage 2 rotates around the hinge axis 400 towards the retracted state, the piston rod 722 makes a piston movement relative to the cylinder body 721 under the push of the air pressure in the cylinder body 721, providing a thrust for the rotation of the carriage 2. When the carriage 2 rotates around the hinge axis 400 towards the use state, the piston rod 722 makes a piston movement relative to the cylinder body 721 under the pull of the air pressure in the cylinder body 721, providing a pulling force for the rotation of the carriage 2. Thus, it can assist the rotation when the carriage 2 switches between the use state and the retracted state, making the operation easier and more labor-saving, and enabling the quick switching between the use state and the retracted state. In this embodiment, the free end of the cylinder body 721 is rotatably connected to the fourth position F, and the free end of the piston rod 722 is rotatably connected to the second position N. Of course, in some other embodiments, the free end of the cylinder body 721 can also be rotatably connected to the second position N, and the free end of the piston rod 722 can be rotatably connected to the fourth position F, which also has the same effect.

[0072] As Figure 16As shown, in some specific embodiments, a locking valve 723 and a control device 724 for locking and / or unlocking the locking valve 723 are provided at the end of the piston rod 722. The locking valve 723 is used to lock and / or unlock the relative movement between the piston rod 722 and the cylinder block 721. By adjusting the control device 724 to the locked state, the locking valve 723 can be in the locked state, thereby making the piston rod 722 and the cylinder block 721 unable to perform telescopic movement, locking the carriage 2 in the stored state or the use state, which is convenient for stable storage or use. Similarly, by adjusting the control device 724 to the unlocked state, the locking valve 723 can be in the unlocked state, and then the piston rod 722 and the cylinder block 721 can perform free telescopic movement, enabling the carriage 2 to freely rotate between the use state and the stored state.

[0073] As Figure 17As shown, in some specific embodiments, the control device 724 includes a control housing 7241 and a control body 7242. The control housing 7241 is rotatably connected to the second position N. One side of the control housing 7241 is provided with a first channel 72411, and the other side is provided with a second channel 72412. The first channel 72411 and the second channel 72412 are arranged perpendicular to each other. The end of the piston rod 722 extends into the first channel 72411 and is threadedly connected to the first channel 72411, which is convenient for assembly. Of course, in some other embodiments, the piston rod 722 can also be detachably connected or fixedly connected to the first channel 72411 through other connecting parts such as pins. The locking valve 723 extends into the interior of the control housing 7241 and is movably connected to the end of the piston rod 722. The control body 7242 includes a positioning shaft 72421, a triggering member 72422, and a holding member 72423. One end of the positioning shaft 72421 passes through the second channel 72412 and extends into the interior of the control housing 7241. An axial base 72413 for installing and positioning the positioning shaft 72421 is provided inside the control housing 7241. The triggering member 72422 protrudes outward from the side wall of the positioning shaft 72421. The holding member 72423 is connected to the outer end of the positioning shaft 72421, and the triggering member 72422 is located inside the control housing 7241. A rotating space is provided inside the control housing 7241 for the triggering member 72422 to rotate around the positioning axis 500 of the positioning shaft 72421. The holding member 72423 is located outside the control housing 7241 and is used to drive the control body 7242 to rotate around the positioning axis 500 of the positioning shaft 72421. When the control body 7242 rotates to the position where the triggering member 72422 presses the locking valve 723, the locking valve 723 is triggered to be in the unlocked state. At this time, the piston rod 722 and the cylinder block 721 are in the unlocked state, and the carriage 2 can freely rotate between the use state and the storage state. When the control body 7242 rotates to the position where the triggering member 72422 releases the locking valve 723, the locking valve 723 returns to the locked state. At this time, the piston rod 722 and the cylinder block 721 are in the locked state, and the carriage 2 can be locked in the use state or the storage state, which is convenient for stable use or storage.

[0074] As Figure 17As shown, in some specific embodiments, the trigger member 72422 includes a locking portion 724221 and an unlocking portion 724222. The distance between the outer end surface of the locking portion 724221 and the axis of the positioning shaft 72421 is greater than the distance between the outer end surface of the unlocking portion 724222 and the axis of the positioning shaft 72421. Thus, when the trigger member 72422 rotates to a position where the locking portion 724221 and the locking valve 723 are on the same straight line, the locking valve 723 can be squeezed and unlocked, and when the trigger member 72422 rotates to a position where the unlocking portion 724222 and the locking valve 723 are on the same straight line, the locking valve 723 can be released and locked. The structure is simple. In this embodiment, the trigger member 72422 is set to an elliptical structure. The unlocking portion 724222 is at both ends of the elliptical structure, and the locking portion 724221 is in the middle of the elliptical structure. In the normal state, both the control device 724 and the locking valve 723 are in the locked state, that is, the end surface of the locking valve 723 abuts against the outer surface of the locking portion 724221. When the driving control body 7242 rotates, the end surface of the locking valve 723 slides along the arc surface of the elliptical structure under the extrusion of the trigger member 72422. When the control body 7242 rotates to a position where the end surface of the unlocking portion 724222 abuts against the end surface of the locking valve 723, the locking valve 723 is converted to the unlocked state under the pressure applied by the trigger member 72422. When the control body 7242 rotates to a position where the outer surface of the locking portion 724221 abuts against the end surface of the locking valve 723, the locking valve 723 is converted to the locked state under the release of the pressure of the trigger member 72422, realizing the locking or unlocking of the gas spring. In addition, the locking portion 724221 and the unlocking portion 724222 are respectively recessed inward from their outer end surfaces to form arc-shaped grooves matching the ends of the locking valve 723, which can limit the ends of the locking valve 723 in the arc-shaped grooves, preventing the locking valve 723 from being locked or unlocked due to accidental contact, and the stability of locking or unlocking is better.

[0075] As Figure 15 shown, in some specific embodiments, the movable structure 72 is arranged between the inner side of the slide rail rod 21 and the machine head 1. The movable structure 72 can be hidden inside the slide rail rod 21, avoiding pinching the human body, with higher safety, and making the structure between the movable structure 72, the slide rail rod 21 and the machine head 1 more compact, thereby reducing the overall space occupied by the rowing machine. It is also convenient for the movable structure 72 to be connected to the slide rail rod 21 and the machine head 1. The slide rail rod 21 and the machine head 1 are arranged at intervals on the left or right side to form a movable space for accommodating the movable structure 72 and allowing the movable structure 72 to move therein.

[0076] As Figure 14As shown, in some specific embodiments, the rear end of the slide rail rod 21 is bent downward to form a bent rod 22. A support cross bar 23 is arranged between the lower ends of the two bent rods 22. The bent rod 22 and the support cross bar 23 are used for supporting the rear end of the slide rail rod 21. The structure is simple and has good stability. The slide rail rod 21 itself and its connection with the bent rod 22 and the support cross bar 23 are arranged as a split structure, which can be disassembled for storage, further reducing space occupation and being convenient for packaging or transportation. Of course, in some other embodiments, the slide rail rod 21 itself or its connection with the bent rod 22 and the support cross bar 23 can also be arranged as an integral structure to enhance the structural stability.

[0077] As Figure 14 shown, in some specific embodiments, three spaced pulleys 51 are respectively arranged on both sides of the bottom of the seat cushion structure 5. The slide rail rod 21 is clamped between the three pulleys 51. The inner ends of the respective pulleys 51 are respectively connected to the vertical plates at the bottom of the seat cushion structure 5. Among them, two pulleys 51 are arranged on the upper side of the slide rail rod 21, and one pulley 51 is arranged on the lower side of the slide rail rod 21. The three pulleys 51 are arranged in an inverted triangle, so that the seat cushion structure 5 is stably slidably connected to the slide rail rod 21 and the seat cushion structure 5 can move back and forth along the length direction of the slide rail rod 21. Of course, in some other embodiments, two spaced pulleys 51 can also be respectively arranged on both sides of the bottom of the seat cushion structure 5, so that the slide rail rod 21 is clamped between the two pulleys 51, or four, five or even more spaced pulleys 51 can be respectively arranged on both sides of the bottom of the seat cushion structure 5; the pulleys 51 can also be respectively arranged on the inner and outer sides of the slide rail rod 21 or on the upper, lower, inner and outer sides; the vertical plates can also be connected to the outer ends of the respective pulleys 51 or to both the inner and outer ends of the pulleys 51. These embodiments can also clamp the slide rail rod 21 therebetween and be slidably connected to the slide rail rod 21. A first limiting member 212 for preventing the seat cushion structure 5 from sliding backward is arranged at a position on the slide rail rod 21 close to the bent rod 22, and a second limiting member 213 for preventing the seat cushion structure 5 from sliding forward is arranged at a position on the slide rail rod 21 close to the second position N. The second limiting member 213 and the first limiting member 212 are respectively used for limiting the front and rear ends of the seat cushion structure 5 when it moves back and forth on the slide rail rod 21, and the safety performance is good. In addition, both the first limiting member 212 and the second limiting member 213 are arranged on the inner side of the slide rail rod 21, so as to reduce space occupation, be convenient for storage, and avoid bumping into the human body. Of course, in some other embodiments, only one of the first limiting member 212 or the second limiting member 213 can also be arranged, and the first limiting member 212 or the second limiting member 213 can also be arranged on the outer side, upper side, lower side or a combination of several sides of the slide rail rod 21, and can also be used for limiting the front or rear end of the seat cushion structure 5 when it moves back and forth on the slide rail rod 21.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0079] In summary, the above are only the preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the patent of the present invention.

Claims

1. A rowing machine, It is characterized in that include: A machine head, comprising a frame and a reel structure, a flywheel structure, a brake structure and an adjustment structure mounted on the frame, wherein the flywheel structure is transmission-connected to the reel structure and can rotate synchronously with the reel structure when the reel structure rotates in a first direction to release a pull rope, wherein the brake structure comprises a first connecting end and a first free end flexibly connected to the first connecting end, wherein a friction block and a magnetic block for preventing the flywheel structure from rotating are arranged on the inner side of the first free end, and wherein the adjustment structure increases the resistance between the friction block and the magnetic block and the flywheel structure by regulating the first free end to swing toward a direction close to the outer side of the flywheel structure, and reduces the resistance between the friction block and the magnetic block and the flywheel structure by swinging toward a direction away from the outer side of the flywheel structure; A slide, the front end of which is connected to the frame, and a cushion structure is slidably connected to the slide and can move back and forth along its length direction; The adjusting structure comprises an extrusion member and an adjusting member, the outer side of the first free end and the inner side of the adjusting member can respectively abut against the inner and outer sides of the extrusion member, the extrusion member has a second connecting end and a movable second free end, the abutting surface on the extrusion member for contacting the outer side of the first free end is located between the second connecting end and the second free end, the second free end can rotate along axis one relative to the first free end and push the first free end to swing toward or away from the outer side of the flywheel structure, the adjusting member can move along axis two relative to the second free end and push the second free end to swing toward or away from the outer side of the flywheel structure, the axis one is arranged on the second connecting end, and the axis one is located on the plane between the first free end and the adjusting member, and the axis two is arranged perpendicular to the axis one.

2. The rowing machine according to claim 1, Features: When the first free end swings until the friction block abuts against the outer side of the flywheel structure, a friction resistance for preventing the flywheel structure from rotating is generated between the friction block and the outer side of the flywheel structure, and the magnetic block is arranged at an interval with the outer side of the flywheel structure and generates a magnetic resistance for preventing the flywheel structure from rotating; When the first free end swings until the friction block is separated from the outer side of the flywheel structure, the magnetic block is spaced apart from the outer side of the flywheel structure and generates a second magnetic resistance force for preventing the flywheel structure from rotating, and the second magnetic resistance force is smaller than the first magnetic resistance force.

3. The rowing machine according to claim 2, Features: The first free end is configured as an arc-shaped plate structure arranged along the outer side of the flywheel structure, the friction block and the magnetic block are fixedly arranged along the inner concave surface of the arc-shaped plate structure, and the friction block is arranged on an end of the first free end away from the first connecting end, the magnetic block is arranged on an end of the first free end close to the first connecting end, and the adjustment structure is arranged close to an end of the outer side of the first free end away from the first connecting end.

4. The rowing machine according to claim 3, Features: The extrusion member is arranged perpendicular to the braking structure, the first axis is arranged parallel to the braking structure, the adjusting structure further includes a fixing member arranged between the extrusion member and the adjusting member, the second connection end is rotatably connected to the fixing member along the first axis, and the adjusting member is telescopically connected to the fixing member along the second axis.

5. The rowing machine according to claim 4, wherein: The machine head further includes a machine shell having a front shell plate and a rear shell plate. The upper end of the rear shell plate is arranged to incline forward and forms a first angle with the medium surface. The upper end of the front shell plate is arranged to incline backward and forms a second angle with the medium surface. An installation area for installing the frame is provided between the front and rear shell plates. The reel structure, the flywheel structure, the braking structure, and the adjusting structure are arranged near the bottom of the installation area.

6. The rowing machine according to claim 5, wherein: A part of the structure on the outer wall of the rear shell plate forms a foot pedal area. A rope body passage through which the pull rope can pass to the outside and an adjustment passage through which the outer end of the adjusting member can pass to the outside are also provided through the rear shell plate. The rope body passage is arranged above the foot pedal area and the adjustment passage.

7. The rowing machine according to claim 6, wherein: The outer end of the pull rope is connected to a handle. A bracket is further provided on the outer wall of the rear shell plate. The bracket includes two handle bases respectively arranged near the left and right sides outside the rope body passage and a mobile device base connected to the upper ends of the two handle bases. The handle base is recessed inward from the outer end face to form a handle groove for positioning the handle. When the handle is in the storage state, the positions on both sides of the pull rope are respectively abutted against the handle grooves of the two handle bases.

8. The rowing machine according to any one of claims 5-7, wherein: The width of the front shell plate is equal to the width of the rear shell plate. The machine shell further includes a left shell plate connected between the left sides of the front and rear shell plates and a right shell plate connected between the right sides of the front and rear shell plates. The sliding frame includes two parallel and spaced rail rods. The front ends of the two rail rods are respectively rotatably connected to the outside of the left and right shell plates through a rotating assembly. When the rail rods rotate relative to the machine head to stand up, the sliding frame is in the storage state.

9. The rowing machine according to claim 8, wherein, The rotating assembly includes: A hinged structure. The first position at the front end of the rail rod is connected to the third position of the frame through the hinged structure and can rotate relative to the machine head around the hinge axis of the hinged structure; A telescopic gas spring. The gas spring includes a cylinder body and a piston rod that are piston-connected to each other. The other ends of the cylinder body and the piston rod are respectively rotatably connected to the second position at the front end of the rail rod and the fourth position of the frame. When the rail rod rotates around the hinge axis, the piston rod makes a piston movement relative to the rod body under the push or pull of the air pressure in the cylinder body; The second position is located on the side of the first position away from the front end of the rail rod and is spaced from the first position. The fourth position is located behind the third position and is spaced from the third position.

Images