CN116474312A - Multifunctional body-building device - Google Patents

Abstract

The utility model provides a multifunctional body-building device which can easily realize multiple body-building functions and strength training functions. The multi-functional exercise machine includes an exercise machine body having a force source and having a rowing machine combination mode in which a rowing machine is also included, the rowing machine including: the rowing machine comprises a front support frame, a rear support frame, a guide rail supported by the front support frame and the rear support frame and extending in the front-rear direction, a pair of foot pedals mounted on the front support frame, a seat slidably mounted on the guide rail, and at least any one of a high-position lower pull rod capable of being docked with a force source and a long straight rod capable of being docked with the force source, wherein in the rowing machine combination mode, the rowing machine is arranged in a mode that the front support frame of the rowing machine is close to the lower part of a body-building machine main body, and the high-position lower pull rod is docked with the force source, so that a racing boat training function can be realized; the long straight rod is in butt joint with a force source, so that the kayak training function can be realized; the function of the leg kicking machine can be realized by butting the seat with the force generating source.

Description

Multifunctional body-building device

Technical Field

The utility model relates to the technical field of body-building equipment, in particular to a multifunctional body-building device capable of providing multiple body-building training functions.

Background

In recent years, with the acceleration of the pace of life, the physical quality of people is greatly reduced, with the continuous improvement of the living standard of people, the quality of life is gradually improved, and the concept of people is gradually changed into healthy life. The awareness of the body exercise is gradually improved, and people often choose to go to a gymnasium or purchase body-building equipment at home to exercise; exercise equipment is favored by more and more people with its unique advantages.

The prior indoor body-building device has comprehensive training equipment disclosed in patent document CN 112384288A. In addition, there is a rowing machine type exercise machine disclosed in patent document CN 103537071B.

Disclosure of Invention

Technical problem to be solved

Along with the demands of people for body building diversification, integration of body building equipment is occasionally required to conduct diversified body building. At present, the body-building apparatus on the market is generally simple in structure and single in function, and cannot meet the requirement of body-building crowd on body-building training. The existing indoor fitness equipment, such as the comprehensive training equipment disclosed in the above patent document CN112384288A, has not been compatible with the rowing machine function. However, the existing rowing machines, such as rowing machines disclosed in patent document CN103537071B, are mostly capable of performing the training mode of the racing boat in the rowing machine only singly, and cannot be compatible with other strength training modes.

The present utility model has been made to solve the above-mentioned problems, and an object of the present utility model is to provide a multifunctional body-building apparatus capable of providing various body-building training functions including rowing training.

Further, the present utility model provides a multifunctional body-building apparatus including a rowing function, which is capable of properly controlling output resistance to simulate resistance of a paddle in water.

Means for solving the technical problems

In order to solve the above technical problems, the present utility model provides a multifunctional exercise machine, including an exercise machine body including a force source, arranged in an upright manner, characterized in that the multifunctional exercise machine has a rowing machine combination mode, in which a rowing machine is further included, comprising: the rowing machine comprises a front support frame, a rear support frame, a guide rail supported by the front support frame and the rear support frame and extending in the front-rear direction, a pair of foot pedals mounted on the front support frame, a seat slidably mounted on the guide rail, and at least any one of a high-position lower pull rod capable of being docked with the power source and a long straight rod capable of being docked with the power source, wherein in the rowing machine combination mode, the rowing machine is arranged in a mode that the front support frame of the rowing machine is close to the lower part of the body-building machine, and the high-position lower pull rod is docked with the power source, so that a racing boat training function can be realized; the long straight rod is in butt joint with the force source, so that the kayak training function can be realized; by interfacing the seat with the force source, a leg kicking function can be achieved.

Preferably, the body-building apparatus main body further comprises: a pair of shorter upper swing arms and a pair of longer lower swing arms provided on left and right sides of the body-building body, wherein each of the upper swing arms is slidable in a height direction of the body-building body to change a height position thereof, and a pair of the lower swing arms is provided at a position near a lower end of the body-building body to protrude forward from the body-building body; a resistance mechanism; and at least 2 pull ropes, one ends of the pull ropes are fixed to the resistance mechanism, the other ends of the pull ropes can be pulled out from the positions of a pair of upper swing arms and a pair of lower swing arms respectively after passing through a plurality of pulleys, the force sources comprise upper force sources formed by pulling out the pull ropes from the pair of upper swing arms after passing through the plurality of pulleys, and lower force sources formed by pulling out the pull ropes from the pair of lower swing arms after passing through the plurality of pulleys, the rowing training function is realized by butting the approximately middle positions of the high-position lower pull rods with the upper force sources, the kayaking training function is realized by butting the two ends of the long straight rods with the upper force sources and the lower force sources, and the leg kicking machine function is realized by butting the handrails on the left side and the right side of the seat with the upper force sources.

Preferably, the core member of the resistance mechanism is a motor, and the resistance of the resistance mechanism can be adjusted by adjusting the current flowing through the motor so that the output resistances of the upper and lower force sources have predetermined magnitudes.

Preferably, the multi-functional exercise machine has a single exercise machine mode in which the multi-functional exercise machine includes at least any one of a handle, the high-position drop bar, a V-shaped handle, the long straight bar, a pull cord component, and a strap, at least one strength training function being enabled by interfacing the handle or the long straight bar with the force-generating source.

Preferably, the body of the exercise machine is capable of dynamically adjusting the output resistance of the force-generating source according to the position of one end of the long straight bar, the angle of the pull cord connected to that end from the force-generating source, and the angle of rotation of the long straight bar about its axis.

Preferably, the body of the body-building device is configured to enable the force source to dynamically provide different resistances based on the angle of the pull rope detected in real time, the angle representing the water inlet critical value of the one end of the long straight rod, the rotation angle of the long straight rod around the axis of the long straight rod detected in real time, and the obtained information of resistances of paddles at different positions and water grabbing angles in water, so as to simulate the resistance change in the real rowing process.

Preferably, the angle of the pull string is obtained according to a distance between the upper force source and the lower force source, a length of the pull string connected from the upper force source to the one end of the long straight rod detected in real time, and a length of the pull string connected from the lower force source to the one end of the long straight rod detected in real time.

Preferably, two ends of the long straight rod are provided with connecting pieces rotatable relative to the long straight rod, the pull rope is in butt joint with the long straight rod through the connecting pieces, the connecting pieces are provided with angle sensors, and the rotation angle of the long straight rod around the axis of the long straight rod is obtained based on the measured value of the angle sensors.

Advantageous effects

One of the advantages of the multifunctional body-building apparatus of the present utility model is that various body-building functions can be easily achieved by combining the body-building apparatus body with the rowing machine and properly interfacing it with the up-down force source of the body-building apparatus body by properly selecting the high-position down-draw bar and the long straight bar. In addition, the multifunctional body-building device also has an independent body-building device training mode, and can realize various strength training functions by properly selecting different parts such as a handle, a long straight rod and the like and properly docking the parts with an up-down force source of the body-building device main body.

Moreover, since the force source of the body-building apparatus body can adjust the resistance, the user can easily select the exercise intensity suitable for himself for each of the body-building functions.

In addition, when combining the body-building apparatus main part with the rowing machine, not only can realize multiple rowing training function, can also utilize the resistance control mechanism of body-building apparatus main part to provide different resistance dynamically, simulate the resistance variation when the paddle blade is in different states in real water. Thus, a rowing training mode which is closer to the actual rowing exercise can be provided.

Drawings

FIGS. 1A and 1B are schematic views showing basic components of a multi-functional exercise machine according to an embodiment of the present utility model, wherein FIG. 1A is a schematic view showing basic components of the multi-functional exercise machine in a rowing machine combination mode, and FIG. 1B is a schematic view showing basic components of the multi-functional exercise machine in a stand-alone exercise machine mode;

FIGS. 2A and 2B are schematic views showing the structure of a rowing machine in the multi-functional exercise machine of the present utility model;

FIG. 3 is a schematic view showing the structure and functions of the multi-functional exercise machine (implementing the racing function) according to one embodiment of the present utility model;

FIG. 4 is a schematic view showing the structure and function of the multifunctional body-building apparatus (implementing the kayak function) according to one embodiment of the present utility model;

FIG. 5 is a schematic view showing the structure and function of a multi-functional exercise machine embodying the present utility model (performing the function of a leg-press machine);

FIG. 6 is a schematic diagram illustrating the functionality of a single exercise mode of one embodiment of the present utility model (single exercise training mode 1);

FIG. 7 is a schematic diagram illustrating the functionality of a single exercise mode of one embodiment of the present utility model (single exercise training mode 2);

FIG. 8 is a schematic diagram illustrating the functionality of a single exercise mode of one embodiment of the present utility model (single exercise training mode 3);

FIG. 9 is a schematic diagram for explaining dynamic control of resistance by the calculated angle in one embodiment of the present utility model;

fig. 10A and 10B are schematic views of an angle sensor in an embodiment of the present utility model.

Detailed Description

Hereinafter, a specific embodiment of the present utility model will be described with reference to the accompanying drawings.

Fig. 1A and 1B are diagrams illustrating basic components of a multi-functional body-building apparatus according to an embodiment of the present utility model, wherein fig. 1A is a diagram illustrating basic components of the multi-functional body-building apparatus in a rowing machine combination mode, and fig. 1B is a diagram illustrating basic components of the multi-functional body-building apparatus in a stand-alone body-building apparatus mode. As shown in fig. 1A, the multi-functional exercise machine in a rowing machine combination mode of an embodiment of the present utility model includes an exercise machine main body 1 including force sources 11, 12 arranged in an upright manner; a rowing machine 2; a high-position lower pull rod 3 capable of being docked with the force sources 11, 12; and a long straight rod 4 capable of interfacing with said force sources 11, 12. Here, fig. 1A shows that the multi-functional body-building apparatus in the rowing machine combination mode includes the high-level lower tie rod 3 and the long straight rod 4, but they are not all necessary accessories, as shown in the following embodiments, at least one rowing machine training mode can be realized as long as at least either one of the high-level lower tie rod 3 and the long straight rod 4 is provided. In addition, the rowing machine 2 may be partially directly connected to the power sources 11 and 12 without the high-position lower tie rod 3 and the long straight rod 4 to realize the function of a leg kicker. As shown in fig. 1B, the multi-functional exercise machine in the individual exercise machine mode of one embodiment of the present utility model includes an exercise machine body 1 including force-generating sources 11, 12 arranged in an upright manner; a handle 5 capable of interfacing with the force sources 11, 12, a high pull down bar 3, a V-handle 6, a long straight bar 4, a pull cord member 7 and a strap 8. Although fig. 1B shows the multi-functional exercise machine in the stand alone exercise machine mode including the handle 5, the high-end pull rod 3, the V-handle 6, the long straight rod 4, the pull string component 7, and the strap 8, they are not all necessary accessories, as shown in the later embodiments, as long as at least any one of the handle 5, the high-end pull rod 3, the V-handle 6, the long straight rod 4, the pull string component 7, and the strap 8 can be implemented in at least one strength training mode. The body-building device main body 1 is also provided with a microcomputer (not shown) and a display 13 with a touch function, so that intelligent control and man-machine interaction can be realized.

The body-building apparatus body may be, for example, a multifunctional body-building apparatus as described in chinese patent application publication No. 113181592a, including a pair of shorter upper swing arms and a pair of longer lower swing arms provided on left and right sides, wherein each upper swing arm is slidable in a height direction of the body-building apparatus body so as to change its height position, and the pair of lower swing arms are provided at positions near a lower end of the body-building apparatus body so as to protrude forward from the body-building apparatus body. The body-building apparatus is characterized in that a resistance mechanism is arranged in the body-building apparatus main body, one end of each of at least 2 pull ropes is fixed to the resistance mechanism, and the other end of each pull rope can be pulled out from the positions of the pair of upper swing arms and the pair of lower swing arms respectively after passing through a plurality of pulleys. The core member of the resistance mechanism is a motor, and the resistance of the resistance mechanism can be adjusted by adjusting the current flowing through the motor so that the resistance of the rope becomes a predetermined value. The resistance of the pull cord may be set by the user, for example, between 1 and 50Kgf, or may be set and adjusted by the body of the exercise machine according to the kind of exercise to be performed, or the like.

In the present utility model, the force source includes an upper force source 11 in which one end of a pull rope is fixed to the resistance mechanism and the other end is pulled out of the pair of upper swing arms via a plurality of pulleys, and a lower force source 12 in which one end of the pull rope is fixed to the resistance mechanism and the other end is pulled out of the pair of lower swing arms via a plurality of pulleys.

The force sources 11 and 12 can be abutted against the handle 5, the high-position lower link 3, and the like by using, for example, a "handle connecting device" described in chinese patent publication No. 2149131620U ("abutting" is an important feature of the present utility model, and thus a "connecting device for abutting" is specifically described). Specifically, the handle connecting device comprises a sleeve assembly and an end assembly, wherein the end assembly is detachably connected with the sleeve assembly in a rotary clamping manner. The abutment of each other can be achieved by mounting either one of the sleeve assembly and the end assembly at the output end of the force sources 11, 12 and mounting the other one of the sleeve assembly and the end assembly at the handle 5, the upper lower tie rod 3, etc.

Fig. 2A and 2B are schematic views showing the structure of a rowing machine in a multi-functional exercise machine according to an embodiment of the present utility model, wherein fig. 2A shows an opened state of the rowing machine and fig. 2B shows a folded state of the rowing machine. The rowing machine is foldable, as shown in fig. 2A, and includes: a front support 21, a foldable rail 25, a seat 26 slidably mounted to the rail 25, and a rear support 27 mounted to the rear end of the rail 25. The front support frame 21 is mounted with a high-position lower-pull-rod placement frame 22, a pair of pedals 24 are mounted to the front support frame 21 via pedal-bearing shafts 28, and the front ends of foldable guide rails 25 are mounted to the front support frame 21 via hinges 23. As shown in fig. 1 and 2A, in the opened state of the rowing machine, the guide rail 25 is supported by the front support frame 21 and the rear support frame 27 to extend in the front-rear direction, and as shown in fig. 2B, in the folded state of the rowing machine, the guide rail 25 can be folded upward with the front end to which the hinge 23 is attached as the lower end.

Next, several specific examples of the functions realized by the multi-function exercise machine in the rowing machine combination mode of the present utility model will be described with reference to fig. 3 to 5.

Fig. 3 is a schematic view showing the structure and functions of the multi-functional exercise machine (implementing the racing boat function) according to one embodiment of the present utility model. As shown in fig. 3, when the rowing machine 2 is installed with the front support frame of the rowing machine 2 close to the lower side of the body-building machine body 1, the user sits on the seat to pedal the pedals with both hands to grasp the vicinity of both ends of the high-level lower tie rod 3 by docking the approximately middle position of the high-level lower tie rod 3 with the left and right 2 upper force sources 11, so that the racing training function can be achieved. Specifically, before the training starts, the user can appropriately select the output resistance of the force source 11 of the body of the exercise machine as needed. The selection of the output resistance can be performed by, for example, operating the touch-enabled display 13 of the body-building main body. The training using rowers can be divided into two parts: drive and resume. When the racing boat function is used, in the driving preparation stage, the two hands grip the high-position lower pull rod 3 to be as wide as the shoulders, the two arms straighten the neck and relax the shoulders, the head is kept at the neutral position, and the lower legs are nearly vertical to the ground; when the chair is driven, the legs are firstly stepped to drive the chair to slide backwards on the guide rails, then the body is inclined backwards, the high-position lower pull rod 3 is parallel to the wrist, and the chair is completed by pulling the high-position lower pull rod 3 to the lower rib; in the recovery phase, the arms are stretched, the body tilts forward, and the recovery force of the force source and the inertia of the force source are relied on to return to the initial driving preparation phase to prepare for the next driving.

Fig. 4 is a schematic view showing the structure and functions of the multi-functional exercise machine in a rowing machine combination mode according to one embodiment of the present utility model (implementing a kayak function). As shown in fig. 4, when the rowing machine 2 is disposed with the front support frame of the rowing machine 2 close to the lower side of the body-building machine body 1, a user sits on a seat to hold the long straight bar 4 near both ends by both hands by docking both ends of the long straight bar 4 with the upper and lower force sources 11 and 12 on the left and right sides, and can exercise the kayak. Specifically, before the training starts, the user can appropriately select the output resistances of the upper and lower force sources 11 and 12 of the body of the exercise machine as needed. The selection of the output resistance can be performed, for example, by operating the touch-enabled display 13 of the body-building apparatus main body. In addition, as will be described later, the body of the exercise machine can dynamically provide different resistances according to different states of the paddle blades simulated by the rotation angle of the long straight rod 4. The training using rowers can be divided into two parts: drive and resume. When the kayak is used, in the driving preparation stage, the long straight rod 4 is gripped by two hands, the two arms straighten the neck and relax with the shoulders, the head is kept at a neutral position, and the lower legs are nearly vertical to the ground; when the device is driven, the legs are firstly stepped to drive the seat to slide backwards on the guide rail, then the body is inclined backwards, the left hand and the right hand alternately exchange the high position and the low position, the action of paddle rowing is simulated, and the force is applied to the lower back of the body. In the recovery phase, the arms are stretched, the body tilts forward, and the recovery force of the force source and the inertia of the force source are relied on to return to the initial driving preparation phase to prepare for the next driving.

Fig. 5 is a schematic view showing the structure and functions of the multi-functional exercise machine in a rowing machine combination mode according to one embodiment of the present utility model (implementing the function of a leg-kicker). As shown in fig. 5, when the rowing machine 2 is disposed with the front support frame of the rowing machine 2 close to the lower side of the body-building machine body 1, the user sits on the seat 26 while holding one of the seat armrests on the foot pedals with both hands by docking the seat 26 (here, the seat armrests on both sides of the seat) with the 2 upper force sources 11 on the left and right sides, so that the function of the leg-kicking machine can be achieved. Specifically, before the training starts, the user can appropriately select the output resistance of the upward force source 11 of the body of the exercise machine as needed. The selection of the output resistance can be performed, for example, by operating the touch-enabled display 13 of the body-building apparatus main body. The training using rowers can be divided into two parts: drive and resume. When the function of the leg kicking machine is used, the two hands grip the armrests of the seat with the same width as the shoulders in the driving preparation stage, the upper half body slightly leans forward or keeps vertical to the ground, and the legs are simultaneously used for pedaling with force to drive the seat 26 to slide backwards together with the legs until the legs are completely straightened; during the recovery phase, the slow unloading force of the two legs depends on the recovery force of the force source, and the legs smoothly return to the driving preparation phase.

As described above, the multifunctional body-building apparatus of the present utility model can realize a racing boat function, a kayak function, and a leg-kicking machine function by properly selecting a high-position lower tie rod and a long straight rod to be appropriately docked with the up-and-down force source of the body-building apparatus main body when the body-building apparatus main body is combined with the rowing machine. Of course, the functions to be achieved by the multi-functional exercise machine of the present utility model when the exercise machine body is combined with the rowing machine are not limited to the specific examples described above. Moreover, since the force source of the body-building apparatus main body can adjust the magnitude of the output resistance, the user can easily select the exercise intensity suitable for himself for each of the body-building functions.

The multifunctional body-building device not only can combine the body-building device main body with the rowing device to realize the functions, but also can provide a plurality of body-building functions in a single body-building device mode. Several specific examples of strength training in the individual exercise mode are described below.

Fig. 6 is a schematic diagram showing the function of the individual exerciser mode of one embodiment of the utility model (individual exerciser exercise mode 1). In the individual exercise training mode, the rowing machine 2 is removed from beside the exercise machine body 1 because the rowing machine 2 is not used. As shown in fig. 6, as the individual exercise machine training mode 1, two handles 5 are connected to 2 upward force sources 11 on the left and right sides of the exercise machine main body, and a user stands back on the exercise machine main body 1, and holds one handle 5 with both hands, respectively, to perform upper limb strength training. Specifically, before the training starts, the user can appropriately select the output resistance of the force source 11 of the body of the exercise machine as needed. The selection of the output resistance can be performed by, for example, operating the touch-enabled display 13 of the body-building main body. During the driving preparation phase, the left hand and the right hand simultaneously exert force to pull the handle 5 to the forefront end of the body. During the recovery phase, the force of the two arms is slowly released by the recovery force of the force source 11, and the arms smoothly return to the driving preparation phase.

Fig. 7 is a schematic diagram showing the function of the individual exerciser mode of one embodiment of the utility model (individual exerciser exercise mode 2). As shown in fig. 7, as the individual exercise machine training mode 2, two handles 5 are connected to 2 downward force sources 12 on the left and right sides of the exercise machine main body 1, and a user stands on the exercise machine main body 1 while grasping one handle 5 with both hands, respectively, to perform upper limb strength training. Specifically, before the training is started, the user can appropriately select the output resistance of the force source 12 of the body of the exercise machine as desired. The selection of the output resistance can be performed by, for example, operating the touch-enabled display 13 of the body-building main body. In the driving preparation stage, right and left feet are opposite to a force source, stand side by side, two feet are as wide as shoulders, two hands respectively grasp one handle 5, and in the driving stage, the handle 5 is pushed up from the lowest position of the natural extension of the arms to the highest position of the natural extension by the crossed force of the right and left arms. During the recovery phase, the arms are gradually released in sequence by the recovery force of the force source 12, and the arms smoothly return to the driving preparation phase.

Fig. 8 is a schematic diagram showing the function of the individual exerciser mode of one embodiment of the utility model (individual exerciser exercise mode 3). As shown in fig. 8, as the individual exercise machine training mode 3, two ends of the long straight bar 4 are connected to 2 downward force sources 12 on the left and right sides of the exercise machine main body 1, and a user stands on the exercise machine main body 1, and grips the long straight bar 4 with both hands to perform upper limb strength training. Specifically, before the training is started, the user can appropriately select the output resistance of the force source 12 of the body of the exercise machine as desired. The selection of the output resistance can be performed, for example, by operating the touch-enabled display 13 of the body-building apparatus main body. During the driving preparation stage, the front side stands in front of the body-building device, the two feet are as wide as the shoulders, the long straight rod 4 is tightly held by the two hands and is as wide as the shoulders, the palm center is upward, and during the driving stage and the recovery stage, the large arm and the shoulders are tightened to keep the condition of being hung on the ground as much as possible, and the small arm performs up-and-down circular motion by taking the elbow joint as the axis.

As described above, when the body-building apparatus body 1 of the present utility model is used alone, various strength training modes can be realized by appropriately selecting different components such as the handle 5 and the long rod 4 and appropriately docking them with the up-and-down force sources 11 and 12 of the body-building apparatus body 1. Of course, the above description is merely three specific strength training modes of the individual fitness machine, and the multifunctional fitness machine of the present utility model can also implement multiple strength training modes, which are not listed here.

An example of dynamic control of the output resistance of the multi-function exercise machine according to one embodiment of the present utility model will be described with reference to fig. 4 and 9 to 10B.

As shown in fig. 4, the long straight bar 4 for rowing exercise is butted with the upper force source 11 and the lower force source 12 through 4 pulling ropes extended from the body-building apparatus body 1, a person sits on a sliding seat, two feet are fixed on pedals, and two hands pull the long straight bar 4 to perform rowing action similar to a kayak exercise. The body-building device main body 1 monitors the lengths of the two pull ropes of the upper force source 11 and the two pull ropes of the lower force source 12 in real time, and can obtain the approximate position of one end of the long straight rod 4 and the angle of the pull rope of the lower force source 12 connected to the end through three-dimensional space conversion, so as to be used as the basis for calculating the current output resistance. In addition, as shown in fig. 10, an angle sensor 41 may be provided on the long straight rod 4 to detect the rotation angle of the long straight rod 4 about its axis, thereby obtaining the water grabbing angle of the paddle in the water, and calculating the output resistance according to the water grabbing angle.

Specifically, fig. 9 is a schematic diagram for explaining dynamic resistance control by the calculated angle in one embodiment of the present utility model. As shown in fig. 9, the kayak mode requires the use of 4 pull cords to connect the upper and lower force sources 11, 12. Here, the positions of the upper and lower force sources 11, 12 refer to the front end positions of the upper swing arm and the front end positions of the lower swing arm of the body-building apparatus body 1. Since the positions of the upper and lower force sources 11, 12 are fixed, the length of a fixed side b of the triangle ABC (for example 1034.4 mm) can be obtained, and the lengths of the pull ropes a, c can be detected in real time by the position sensor of the body 1 from the pull rope a and the pull rope c of the upper and lower force sources 11, 12 connected to one end of the long straight rod 4, so that the lengths of the pull ropes a, c are also known. Knowing the length of the three sides a, b, c of triangle ABC, the trigonometric function formula is applied: cosc= (a) ² +b ² －c ² ) And (2 ab) obtaining the real-time angle value of the angle C (the included angle between the side a and the side b) of one end of the long straight rod 4.

As also shown in fig. 9, the plane defining the guideway is a horizontal plane simulating reality, and when the rowing machine 2 is used, the stage of the paddle entering water is defined when one end of the long straight rod 4 in the hand is lower than the plane of the guideway. When the angle of C is gradually increased and exceeds the guide rail plane, water starts to enter, and the practical product design parameters can know that the critical value of the pull rope a and the guide rail plane is C=135 DEG at the nearest end and C=132 DEG at the farthest end.

In this embodiment, the force source can dynamically provide different resistances based on the angle C of one end of the long straight rod 4 detected in real time, the angle of the above-mentioned water inlet critical value, and the information of resistances of different positions and water grabbing angles of the paddle in the water, which are obtained in advance, stored in the microcomputer of the body-building apparatus main body 1, so as to simulate the resistance change in the real rowing process. For example, it is defined that when C >135 DEG, the paddle starts to go into the water, the resistance provided by the motor increases with the increase of C, and when C > 145 DEG, the paddle blade is completely immersed in the water, the resistance provided by the motor is not increased any more due to the increase of C, but different resistances are provided by simulating different states of the paddle blade in the water according to the rotation angle of the long straight rod. In reality, both ends of the paddle are provided with paddles, when the paddles are completely vertical to water flow, the resistance of the water flow to the paddles is maximum, the output of athletes is maximum, the kayak obtains the maximum advancing power, and the force source is required to provide the maximum resistance at the moment; when the blade is not perpendicular to the water flow and gradually changes from 90 degrees to 0 degrees, the resistance of the force generating source is gradually smaller. The angle sensor 41 of the present utility model is provided to simulate this blade change process.

Fig. 10A and 10B are schematic views of an angle sensor in an embodiment of the present utility model.

As shown in fig. 10A, the long straight rod 4 is provided at both ends with a connector 40 rotatable with respect to the long straight rod 4 (only 1 connector 40 provided at one end of the long straight rod 4 is shown in fig. 10), the pull rope a and the pull rope c are butted with the long straight rod 4 via the connector 40, and an angle sensor 41 capable of detecting a relative rotation angle between the long straight rod 4 and the connector 40 is provided on the connector 40 (in fig. 10A, P1 indicates that the angle sensor 41 is in a first position, and P2 indicates that the angle sensor 41 is in a second position), whereby a water gripping angle of the paddle is obtained. Specifically, when C <135 °, the paddle is not in the water, the angle sensor 41 is not active, when C >135 °, the paddle starts to enter the water, and when the arm wrist is defined to be on the same line with the two end connectors and the pull rope (as shown in fig. 10B), the reading value of the angle sensor is 90 °, and the movement direction of the blade is consistent with the water grabbing angle, and the output resistance is maximum; in the dynamic movement process, the angle between the arm wrist and the connecting pieces at the two ends can be changed along with the change of the movement posture, the angle sensor reads different values, and the output resistance is correspondingly adjusted.

As described above, the multifunctional exercise machine of the present utility model can not only realize various rowing training functions when combining the exercise machine body with the rowing machine, but also dynamically provide different resistances by using the resistance control mechanism of the exercise machine body to simulate the resistance change of the paddle blades in different states in real water. Thus, a rowing training mode which is closer to the actual rowing exercise can be provided.

Claims (8)

1. A multifunctional body-building apparatus comprises a body-building apparatus main body, wherein the body-building apparatus main body comprises a force source, is arranged in an upright mode, and is characterized in that,

the multifunctional body-building device has a rowing machine combination mode, and the rowing machine combination mode further comprises

A rowing machine, comprising: a front support frame, a rear support frame, guide rails supported by the front support frame and the rear support frame and extending in the front-rear direction, a pair of footrests mounted to the front support frame, and a seat slidably mounted to the guide rails, and

at least any one of a high-position drop rod capable of being docked with the force generating source and a long straight rod capable of being docked with the force generating source,

in the rowing machine combination mode, the rowing machine is arranged in a mode that the front support frame of the rowing machine is close to the lower part of the body-building machine main body, and the high-position lower pull rod is in butt joint with the force source, so that the racing boat training function can be realized; the long straight rod is in butt joint with the force source, so that the kayak training function can be realized; by interfacing the seat with the force source, a leg kicking function can be achieved.

2. The multi-functional exercise machine of claim 1, wherein,

the body-building apparatus main body further includes:

a pair of shorter upper swing arms and a pair of longer lower swing arms provided on left and right sides of the body-building body, wherein each of the upper swing arms is slidable in a height direction of the body-building body to change a height position thereof, and a pair of the lower swing arms is provided at a position near a lower end of the body-building body to protrude forward from the body-building body;

a resistance mechanism; and

at least 2 pull ropes, one ends of which are fixed on the resistance mechanism, the other ends of which can be pulled out from the positions of a pair of upper swing arms and a pair of lower swing arms respectively after passing through a plurality of pulleys,

the force source comprises an upper force source formed by pulling the pull rope out of the pair of upper swing arms through a plurality of pulleys and a lower force source formed by pulling the pull rope out of the pair of lower swing arms through a plurality of pulleys,

the rowing training function is achieved by abutting the approximately middle position of the high-position lower pull rod with the upper force source, the kayak training function is achieved by abutting the two ends of the long straight rod with the upper force source and the lower force source, and the leg kicking machine function is achieved by abutting the armrests on the left side and the right side of the seat with the upper force source.

3. The multi-functional exercise machine of claim 2, wherein,

the core component of the resistance mechanism is a motor, and the resistance of the resistance mechanism can be adjusted by adjusting the current flowing in the motor so that the output resistance of the upper force source and the lower force source is of a prescribed magnitude.

4. A multi-functional exercise machine according to any one of claim 1 to 3, wherein,

the multi-functional exercise machine has a single exercise machine mode in which the multi-functional exercise machine includes at least any one of a handle, the high-position lower link, a V-shaped handle, the long straight bar, a pull rope member, and a strap,

at least one strength training function can be achieved by interfacing the handle or the long straight bar with the force source.

5. The multi-functional exercise machine of claim 3, wherein,

the exercise machine body is capable of dynamically adjusting the output resistance of the force-generating source according to the position of one end of the long straight rod, the angle of the pull rope connected to the one end from the force-generating source, and the rotation angle of the long straight rod around the axis thereof.

6. The multi-functional exercise machine of claim 5, wherein,

the body-building device main body is configured to enable the force source to dynamically provide different resistances based on the angle of the pull rope detected in real time, the angle of the water inlet critical value representing one end of the long straight rod, the rotation angle of the long straight rod around the axis of the long straight rod detected in real time and the obtained resistance information of different positions and water grabbing angles of the paddle in water in advance, so as to simulate the resistance change in the real rowing process.

7. The multi-functional exercise machine of claim 5 or 6, wherein,

the angle of the pull rope is obtained according to the distance between the upper force source and the lower force source, the length of the pull rope connected to the end of the long straight rod from the upper force source detected in real time, and the length of the pull rope connected to the end of the long straight rod from the lower force source detected in real time.

8. The multi-functional exercise machine of claim 5 or 6, wherein,

the two ends of the long straight rod are provided with connecting pieces which can rotate relative to the long straight rod, the pull rope is in butt joint with the long straight rod through the connecting pieces, the connecting pieces are provided with angle sensors, and the rotation angle of the long straight rod around the axis of the long straight rod is obtained based on the measured value of the angle sensors.