Strength training instrument

Abstract

The utility model discloses a strength training apparatus and relates to the technical field of fitness equipment, the strength training apparatus comprises a vertical frame, a pedal, an adjusting mechanism and a pull rope connection mechanism, the adjusting mechanism is movably arranged on the pedal and has a locking state and an unlocking state; under the condition that the adjusting mechanism is in the locking state, the adjusting mechanism and the pedal are relatively fixed in the preset direction; under the condition that the adjusting mechanism is in the unlocking state, the adjusting mechanism can be movably adjusted in the preset direction relative to the pedal, and the pull rope connection mechanism is detachably installed on the vertical frame or the adjusting mechanism. When the pull rope connection mechanism is installed on the adjusting mechanism, on the premise that the size of the strength training instrument does not need to be greatly changed, a trainer can correspondingly adjust the position of the pull rope connection mechanism on the pedal according to corresponding training requirements, the applicable crowd and the applicable training items of the strength training instrument are expanded, and the training efficiency is improved. And the training effect is correspondingly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a strength training device. Background Art

[0002] The application range of strength training equipment is very wide. It can provide users with a variety of training modes according to the training devices equipped. Among them, the stand and pedal of the strength training equipment are important components of the strength training station. The stand is usually the main structure of the strength training equipment, while the pedal is the part of the strength training equipment used to support the user's feet.

[0003] At present, some strength training equipment is limited by cost and space, so the frames and pedals are designed to be relatively small. However, this also restricts the user's movements during related training programs, making it impossible to adapt to the requirements of different training programs for the force application position, thus affecting the training effect. Utility Model Content

[0004] The purpose of the embodiments of the utility model is to provide a strength training device to solve the problem that the application range of the device is small and the training movements of users are greatly limited.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Provided is a strength training device, comprising:

[0007] Stand;

[0008] A pedal connected to the stand and arranged at an angle to the stand;

[0009] An adjusting mechanism, one end of which is movably disposed on the pedal and has a locked state and an unlocked state; when the adjusting mechanism is in the locked state, the adjusting mechanism and the pedal are relatively fixed in a preset direction; when the adjusting mechanism is in the unlocked state, the adjusting mechanism can be movably adjusted relative to the pedal in a preset direction;

[0010] The pull rope connection mechanism is arranged at the other end of the adjustment mechanism.

[0011] The pull rope connection mechanism can adjust its position on the pedal through the adjustment mechanism according to the trainee's physical adjustment, training program and other requirements, thereby improving the versatility of the strength training equipment.

[0012] The beneficial effects of the utility model are as follows: the strength training device is provided with an adjustment mechanism on the pedal that can be movably adjusted relative to the pedal, so that when the pull-cord connecting mechanism is installed on the adjustment mechanism, the trainee can also make corresponding adjustments to the position of the pull-cord connecting mechanism on the pedal according to corresponding training needs without making a major change to the volume of the strength training device. In particular, in devices with relatively small pedal sizes, the pull-cord connecting mechanism can be movably adjusted along the width direction of the pedal with the help of the adjustment mechanism, so that the position of the force-applying component can meet the requirements of different trainees' body shapes and different training programs for the position of the force-applying component, thereby reducing the limitations of the device on the trainees, expanding the applicable population and applicable training programs of the strength training device, and correspondingly improving the training effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described in detail below based on the drawings and embodiments.

[0014] Figure 1 This is one of the structural schematic diagrams of the strength training device described in the embodiment of the utility model;

[0015] Figure 2 This is the second structural schematic diagram of the strength training device described in the embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the pedal structure described in an embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the adjustment seat according to the embodiment of the utility model;

[0018] Figure 5 This is an exploded view of the adjustment mechanism described in the embodiment of the utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the moving parts and the pull rope connection mechanism according to the embodiment of the utility model;

[0020] Figure 7 This is one of the cross-sectional views of the moving parts and the pull rope connection mechanism described in the embodiment of the utility model;

[0021] Figure 8 This is the second cross-sectional view of the moving component and the pull rope connection mechanism described in the embodiment of the utility model;

[0022] Fig. 9 This is a schematic diagram of the structure of the adjustment seat and the adjustment mechanism according to the embodiment of the utility model;

[0023] Fig.10 This is one of the cross-sectional views of the adjustment seat and the adjustment mechanism described in the embodiment of the utility model (locked position);

[0024] Fig.11This is the second cross-sectional view of the adjustment seat and the adjustment mechanism according to the embodiment of the utility model (unlocked position);

[0025] Fig.12 This is an exploded view of the pull rope connection mechanism described in the embodiment of the utility model;

[0026] Fig.13 This is a cross-sectional view of the pull rope connection mechanism described in an embodiment of the utility model.

[0027] In the figure: 10, stand; 12, adjustment seat; 13, lead mechanism; 20, pedal; 30, adjustment mechanism; 31, moving part; 32, constraint assembly; 321, first adjustment structure; 3211, first limiting part; 3212, shaft hole; 3213, pin hole; 322, second adjustment structure; 3221, second limiting part; 3222, holding part; 323, elastic holding device; 324, locking member; 3241, locking part; 3242, first operating part; 3243, first limiting boss; 325, limiting part; 40, pull rope connection mechanism; 41, lead part; 411, winding groove; 42, limiting assembly; 421, limiting rod; 4211, second operating part; 4212, second limiting boss; 422, elastic reset part; 43, transition bracket; 50, sling. DETAILED DESCRIPTION

[0028] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model are further described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] The application range of strength training equipment is very wide. It can provide users with a variety of training modes according to the training devices it is equipped with. The stand and pedal of the strength training equipment are important components of the strength training station.

[0032] The stand is usually the main structure of the strength training equipment. The stand is usually equipped with adjustment holes at different heights, so that the trainer can flexibly adjust the height and angle of the force application position according to his or her height and the needs of the training project. The state of the force application component on the stand allows the strength training equipment to be compatible with a variety of different training accessories, such as barbells, dumbbells, pullers, etc., so that the equipment can meet the needs of standing training projects as much as possible.

[0033] The pedal is the part of the strength training equipment that supports the trainee's feet, ensuring that the trainee can keep himself and the equipment relatively stable when performing the movements.

[0034] From the background technology, it can be seen that at present, some strength training equipment is limited by cost and space, and the frame and pedals are designed to be relatively small. However, this also restricts the user's movements during related training programs. For example, due to the small width of the pedal, the installation position of the resistance handle in the width direction of the pedal is also subject to corresponding constraints and restrictions, which cannot adapt to the requirements of different training programs for the force application position, ultimately affecting the training effect.

[0035] In view of this, the present embodiment provides a strength training device, which solves a series of problems such as the poor versatility of strength training devices and the small scope of applicability to different training programs by adjustably arranging a rope connecting mechanism 40 for constraining the position of the resistance handle on the pedal 20 to adapt to the requirements of different trainees and different training programs for the force application position.

[0036] Please refer to the attached Figure 1-Figure 11The strength training device includes a stand 10 and a pedal 20, wherein the stand 10 is connected to the stand 10 and is set at an angle to the stand 10, so that the strength training device can better adapt to the movement biomechanics of the human body and meet different training needs, so that the strength training device has more space and position for setting the force position, so that it can provide more training options and flexibility.

[0037] It should be noted that, since the above-mentioned related contents have made a preliminary description of the basic structure of the strength training equipment, the stand 10 and the pedal 20 of the strength training equipment will not be further detailed or elaborated here.

[0038] In order to achieve the above-mentioned adjustment of the force application position, the strength training equipment also includes an adjustment mechanism 30 on the basis of the above. The adjustment mechanism 30 can be movably arranged on the pedal 20. The adjustment mechanism 30 can provide an installation position for the pull-cord connecting mechanism 40, so that the pull-cord connecting mechanism 40 can be movably adjusted relative to the pedal 20 with the help of the adjustment mechanism 30, so that the force-applying component (such as a barbell, handle, etc.) can be adjusted in position relative to the pedal 20 in at least one dimension to adapt to trainees of different heights, body shapes and training goals, and meet the diverse needs during training.

[0039] Specifically, the relative position adjustment between the adjustment mechanism 30 and the pedal 20 includes but is not limited to the following forms:

[0040] Height adjustment: Through structures such as swing arms, slide rails, slots or telescopic rods, the pull rope connection mechanism 40 can be moved up and down in a direction vertical or nearly vertical to the surface of the pedal 20. This adjustment method can ensure that the pull rope connection mechanism 40 is at a suitable height when the trainer performs training items such as squats and deadlifts, thereby improving the training effect and comfort.

[0041] Front and rear adjustment: The pull rope connection mechanism 40 is moved back and forth along the length direction of the pedal 20 in a direction parallel to or close to the surface of the pedal 20 through the adjustment mechanism 30, so that the trainee can adjust the relative position of the force application position and the body according to his or her needs and habits, which helps to ensure the correctness and stability of the training movements.

[0042] Width adjustment: The pull rope connection mechanism 40 moves forward and backward along the width direction of the pedal 20 in a direction parallel to or close to the surface of the pedal 20 through the adjustment mechanism 30, so that the trainee can adjust the relative position of the force application position and the body according to his own needs and habits, and also make the force application position and the force application component match each other to improve the training effect.

[0043] In one embodiment, the relative position of the adjusting mechanism 30 and the pedal 20 can be adjusted manually.

[0044] In some other embodiments, the strength training device may also use electric or pneumatic adjustment to make corresponding adjustments to the adjustment mechanism 30, so that the position adjustment of the pull rope connection mechanism 40 is more convenient and accurate.

[0045] Specifically, the adjustment mechanism 30 has a locked state and an unlocked state on the pedal 20. When the adjustment mechanism 30 is in the locked state, the adjustment mechanism 30 and the pedal 20 are relatively fixed in a preset direction, preventing the adjustment mechanism 30 from moving relative to the pedal 20 in the preset direction, and fixing the relative position of the pull rope transition mechanism (force application position) and the pedal 20. When the adjustment mechanism 30 is in the unlocked state, the adjustment mechanism 30 can be adjusted relative to the pedal 20 in a preset direction, so that the pull rope connection mechanism 40 can adjust its position on the pedal 20.

[0046] It needs to be explained that the preset directions for adjustment of the adjustment mechanism 30 on the pedal 20 may include but are not limited to the above-mentioned height direction, front-to-back direction and width direction. That is to say, when the adjustment mechanism 30 is in a locked state, the adjustment mechanism 30 and the pedal 20 are not necessarily completely fixed. It is sufficient as long as they are relatively fixed in a certain specific direction to ensure that the pull-cord connecting mechanism 40 can be locked by the adjustment mechanism 30 in the preset direction when the trainee is performing the corresponding training program.

[0047] In connection with the above-mentioned embodiments, it can be understood that the pull rope connecting mechanism 40 is a key mechanism for connecting the pull rope (steel cable) and the device body (such as a resistance source). In the actual application scenario of the strength training device, the pull rope connecting mechanism 40 is specifically used to support the pull rope and, in some embodiments, change the extension direction of the pull rope (change the direction of the force applied by the resistance source to the force-applying component) so as to enhance the stability of the pull rope and improve the force transmission effect by constraining the layout of the pull rope on the device, and determine the training items that the device can currently provide.

[0048] In some embodiments, the pull rope connection mechanism 40 can also constrain the limit position of the pull rope in the recovery direction through the force-applying component, thereby achieving the following effects:

[0049] Protect user safety: prevent trainers from over-stretching or suddenly releasing the rope, thereby avoiding strain, sprain or other injuries;

[0050] Protect the device itself: prevent the device from being damaged due to excessive stretching or sudden release of the pull cord;

[0051] Ensure training effectiveness: Ensure trainees are training within the correct range;

[0052] Provide a stable training environment: It helps maintain the stability and balance of the equipment and ensures that the trainees will not be affected by the instability of the equipment during training.

[0053] For example, in conjunction with the attached Figure 1 , Figure 10-11 In a reference embodiment, a sling 50 for mounting a force-applying component is provided at one end of the pull rope away from the equipment. When the pull rope is wound around the pull rope connecting mechanism 40, the pull rope passes through the pull rope connecting mechanism 40 and can be unwound and reeled along the direction constrained by the pull rope connecting mechanism 40 under the action of the resistance source and the trainee, and the pull rope connecting mechanism 40 can constrain the sling 50 (the sling 50 cannot pass through the pull rope connecting mechanism 40 along the direction constrained by the pull rope connecting mechanism 40), so that the sling 50 can be constrained on one side of the pull rope connecting mechanism 40, and the position of the sling 50 is used to limit the extreme position of the pull rope in the reeling direction.

[0054] On the basis of the above-mentioned embodiment, the pull-cord connecting mechanism 40 can be detachably installed on the stand 10 or the adjusting mechanism 30. Specifically, the pull-cord connecting mechanism 40 can be selectively installed on the stand 10 or the adjusting mechanism 30 through the adjusting seat 12 according to the corresponding training needs. In this way, the training programs that can be provided by the strength training equipment can be richer and have a wider range of applications, which reduces the cost of purchasing different training equipment and saves the space required for placing different training equipment, which is conducive to enhancing the user experience.

[0055] Please continue to refer to the attached Figure 3 , Figure 5-Figure 11 In one embodiment, the adjustment mechanism 30 includes a moving component 31 and a constraint component 32.

[0056] Among them, the moving part 31 is the part in the adjustment mechanism 30 that is responsible for actual movement and positioning. In the actual application scenario of the strength training equipment, the moving part 31 can be movably arranged on the pedal 20 and is used to provide a position for installing the pull rope connection mechanism 40. The installation of the moving part 31 on the pedal 20 can be directly supported on the pedal 20 through a movable structure, or can be movably arranged on the pedal 20 through a constraint component 32. It can be understood that the movement mode of the moving part 31 on the pedal 20 determines the adjustment form that the above-mentioned adjustment mechanism 30 can provide to meet the needs of different trainers.

[0057] The constraint component 32 serves to limit and stabilize the moving part 31, ensuring that the moving part 31 does not exceed a predetermined range or position during the adjustment process. In the actual application scenario of the strength training equipment, the constraint component 32 is arranged between the moving part 31 and the pedal 20. The constraint component 32 prevents the moving part 31 in the locked state from moving in a preset direction by providing resistance or limiting the stroke, thereby ensuring the safety and stability of the training process.

[0058] In the adjustment mechanism 30, the moving component 31 and the constraint component 32 are interrelated and interact with each other. The moving component 31 is responsible for realizing the adjustment of the pull-cord connecting mechanism 40 (force-applying component), while the constraint component 32 ensures that such adjustment is carried out within a safe and controllable range, so that the trainee can adjust the position of the pull-cord connecting mechanism 40 according to his or her own needs, so as to obtain the best training effect.

[0059] Continuing with the above embodiment, the constraint assembly 32 and the moving part 31 can move relative to each other between a locked position and an unlocked position. When the constraint assembly 32 and the moving part 31 are in the locked position, the adjustment mechanism 30 is correspondingly in a locked state, and the constraint assembly 32 limits the movement of the moving part 31 in a preset direction, stabilizing the relative position of the pull cord connection mechanism 40 and the pedal 20. When the constraint assembly 32 and the moving part 31 are in the unlocked position, the adjustment mechanism 30 is correspondingly in an unlocked state, and the constraint assembly 32 releases the restriction on the moving part 31 in the preset direction, allowing the pull cord connection mechanism 40 to adjust its position relative to the pedal 20.

[0060] It can be understood that the matching relationship between the moving component 31 and the constraint component 32 can be adaptively adjusted according to the design requirements of the strength training equipment and other conditions. In one embodiment, the moving component 31 can move between a locked position and an unlocked position relative to the constraint component 32, and the constraint component 32 is relatively fixed to the pedal 20. It needs to be explained here that in the embodiment in which the moving component 31 has the ability to move between a locked position and an unlocked position, the movement direction of the moving component 31 adjusted relative to the pedal 20 and the direction of its movement between the locked position and the unlocked position are two non-parallel directions, thereby avoiding the trainer from making misoperations during the process of adjusting and locking the moving component 31; in another embodiment, the constraint component 32 can move between a locked position and an unlocked position relative to the moving component 31, and the moving component 31 is fixed relative to the pedal 20 in the movement direction of the locked position and the unlocked position, and it only has the ability to move along a preset direction.

[0061] That is to say, the user can unlock or lock the moving part 31 by operating the moving part 31 or the restraining component 32 according to the specific form of the adjustment mechanism 30, and this embodiment is not strictly limited here.

[0062] By setting the adjustment mechanism 30 as a moving component 31 and a constraint component 32 respectively, and setting the constraint component 32 between the moving component 31 and the pedal 20, the process steps in the process of processing the pedal 20 and the subsequent assembly steps between the pedal 20 and the adjustment mechanism 30 can be effectively reduced. The constraint component 32 can be pre-installed on the pedal 20 to provide a corresponding installation position for the moving component 31, or the moving component 31 can be pre-installed on the pedal 20 so that the constraint component 32 can be installed between the pedal 20 and the moving component 31 through a subsequent assembly process, thereby realizing a modular design between components, improving the production efficiency of the strength training equipment, reducing the difficulty of processing and assembly, and ultimately improving the yield rate of the equipment.

[0063] For example, in a specific application scenario of a strength training device, the direct or indirect active connection between the moving component 31 and the pedal 20 may be determined according to the adjustment form of the adjustment component and the design requirements of the device and other relevant requirements. The types of active connections include but are not limited to:

[0064] A rotational connection allows rotational movement between the moving part 31 and the pedal 20 at a specific point;

[0065] Sliding connection: the moving part 31 and the pedal 20 are respectively designed with a slide rail and a slider, and the position of the device in the horizontal or vertical direction can be adjusted by sliding the slider on the slide rail;

[0066] The moving component 31 and the pedal 20 are connected through a ball joint and a ball socket. The moving component 31 can be flexibly adjusted in multiple directions through the rotation and swing of the ball joint in the ball socket.

[0067] As an optional implementation of the constraint component 32, the constraint component 32 includes a first adjustment structure 321 and a second adjustment structure 322. The constraint component 32 achieves locking and unlocking of the moving part 31 through the mutual cooperation and release of the first adjustment structure 321 and the second adjustment structure 322, so as to ensure that sufficient stability can be provided in the locked state to prevent the moving part 31 from accidentally moving during training.

[0068] Specifically, the first adjustment structure 321 and the second adjustment structure 322 cooperate to achieve the function of jointly assuming the constraint and positioning, and either a mechanical locking mechanism or an electrically driven locking mechanism can be used between the two. In the following, the first adjustment structure 321 is provided on the moving component 31, and the second adjustment structure 322 is provided on the pedal 20 as an example, wherein the first adjustment structure 321 is provided with a first limiting portion 3211, and the second adjustment structure 322 is provided with a corresponding second limiting portion 3221. It can be understood that the first adjustment structure 321 and the second adjustment structure 322 can achieve relative position locking through the mutual cooperation of the first limiting portion 3211 and the second limiting portion 3221, thereby achieving the purpose of locking the moving component 31 with the pedal 20 in a preset direction, and in order to allow the first adjustment structure 321 to be suitable for the moving component 31, the second adjustment structure 322 can be provided with a first limiting portion 3211 and a second limiting portion 3221 to be suitable for the moving component 31. For the movement adjustment of the component 31 on the pedal 20, at least one of the first limiting portion 3211 and the second limiting portion 3221 is multiple, and the first limiting portion 3211 and the second limiting portion 3221 are both located on the movement trajectory between each other, so that in the process of the movable adjustment of the moving component 31 and the pedal 20 within a preset range, the first adjustment structure 321 that moves with the moving component 31, or the second adjustment structure 322 located on the pedal 20 still has the first limiting portion 3211 and the second limiting portion 3221 that can relatively produce a matching relationship, thereby locking the moving component 31 in the corresponding position.

[0069] As an exemplary description of the locking method of the first adjustment structure 321 and the second adjustment structure 322, the two can be locked in the following ways but are not limited to:

[0070] Mechanical locking: The moving part 31 is fixed in a specific position by using a mechanical structure, such as a locking pin, a buckle or a thread. For example, in an embodiment in which the mechanical structure is used as a locking method for the first adjustment structure 321 and the second adjustment structure 322, when the locking pin, buckle, bolt or other structures are used as the first limiting part 3211, the second limiting part 3221 located on the second adjustment structure 322 is correspondingly set to a plurality of pin holes 3213, slots, threaded holes and other structures, so as to be suitable for locking the moving part 31 after it moves relative to the pedal 20 in a preset direction.

[0071] Electromagnetic locking: Using the electromagnetic principle, the moving part 31 is locked in a predetermined position through the magnetic force generated by the electromagnet. Exemplarily, in an embodiment in which the electromagnetic principle is used as the locking method of the first adjustment structure 321 and the second adjustment structure 322, the first limiting portion 3211 and the second limiting portion 3221 are respectively the first magnetic member and the second magnetic member that can generate magnetic attraction force to each other, and at least one of the first magnetic member and the second magnetic member is multiple, so as to ensure that the first magnetic member and the second magnetic member can lock the moving part 31 in the verified position.

[0072] Pneumatic or hydraulic locking: utilizing pneumatic or hydraulic principles to lock the moving part 31 through devices such as a pneumatic cylinder or a hydraulic cylinder. It should be understood that, taking the pneumatic cylinder or a hydraulic cylinder as the second limiting portion 3221 as an example, the first limiting portion 3211 is configured as a stop portion for providing the action of the pneumatic cylinder or the hydraulic rod, and the stop portion is configured in plurality on the first adjustment structure 321.

[0073] Friction locking: locking is achieved by increasing the friction between the moving component 31 and the constraint component 32, and the first limiting portion 3211 and the second limiting portion 3221 can be configured as components such as dampers and friction plates that can generate friction between each other.

[0074] It should be noted that different locking methods should be selected according to specific application scenarios and requirements, and this implementation is not strictly limited here.

[0075] It should be noted that, in the embodiment provided above, when the constraint assembly 32 is in the locked position, at least any one of the first limiting portions 3211 cooperates with at least any one of the second limiting portions 3221 to constrain the movement of the moving component 31 in a preset direction; and when the constraint assembly 32 is in the unlocked position, each first limiting portion 3211 and each second limiting portion 3221 are disengaged from each other, so that the moving component 31 can be movably adjusted along the preset direction.

[0076] As a specific structural form in the above embodiment, the first adjustment structure 321 and the second adjustment structure 322 provide the following specific implementations:

[0077] 1. There are multiple first limiting parts 3211, and the multiple first limiting parts 3211 are arranged at intervals along the movement trajectory of the moving part 31. For example, in the case where the moving part 31 can rotate relative to the pedal 20, multiple first limiting parts 3211 are arranged at intervals around the rotation axis of the moving part 31 to define multiple locking positions of the moving part 31 in the rotation direction, and in the case of linear motion, multiple first limiting parts 3211 are arranged at intervals along the movement direction of the moving part 31 to define multiple locking positions of the moving part 31 in the linear motion direction. Correspondingly, there is one second limiting part 3221, and the second limiting part 3221 is arranged to be located on the movement trajectory of each first limiting part 3211, so as to ensure that the moving part 31 is within the preset range of motion, and the second limiting part 3221 can form a limiting matching relationship with the corresponding first limiting part 3211, so as to lock the moving part 31 at the current position, and ensure that the moving part 31 can be relatively locked with the pedal 20 within the preset range of motion;

[0078] There are multiple second limiting parts 3221, and the multiple second limiting parts 3221 are arranged at intervals along the movement trajectory of the moving part 31. For example, in the case where the moving part 31 can rotate relative to the pedal 20, the multiple second limiting parts 3221 are arranged at intervals around the rotation axis of the moving part 31 to define multiple locking positions of the moving part 31 in the rotation direction, and in the case of linear motion, the multiple second limiting parts 3221 are arranged at intervals along the movement direction of the moving part 31 to define multiple locking positions of the moving part 31 in the linear motion direction. Correspondingly, there is one first limiting part 3211, and the first limiting part 3211 is arranged to be located on the movement trajectory of each second limiting part 3221, so as to ensure that the moving part 31 is within the preset movement range, and the first limiting part 3211 can form a limiting matching relationship with the corresponding second limiting part 3221, so as to lock the moving part 31 at the current position, and ensure that the moving part 31 can be relatively locked with the pedal 20 within the preset movement range;

[0079] Please refer to the attached Figure 5-Figure 11 There are multiple first limiting portions 3211 and multiple second limiting portions 3221, and each first limiting portion 3211 and each second limiting portion 3221 are arranged at intervals along the movement trajectory of the moving component 31, and the movement trajectories of each first limiting portion 3211 and each second limiting portion 3221 overlap. In this way, when the moving component 31 moves to a suitable position relative to the pedal 20, the first adjustment structure 321 and the second adjustment structure 322 can be locked and cooperated with each other by multiple first limiting portions 3211 and multiple second limiting portions 3221 to improve the locking strength of the moving component 31 on the pedal 20 and ensure the stability of the moving component 31 on the pedal 20.

[0080] Based on the above implementation of the constraint assembly 32 including the first adjustment structure 321 and the second adjustment structure 322, please refer to the attached Figure 5-Figure 11The adjustment mechanism 30 also includes an elastic retaining device 323, which is disposed between the moving component 31 and the constraint assembly 32. The elastic retaining device 323 is used to act on the moving component 31 and the constraint assembly 32, and continuously applies elastic force to the constraint assembly 32 (the first adjustment structure 321 and the second adjustment structure 322) to move in the direction of the locking position, so that the two have a tendency to move relative to each other in the direction of the locking position. In this way, the moving component 31 and the pedal 20 (the first adjustment structure 321 and the second adjustment structure 322) can be kept in the locking position without the action of external forces other than the elastic force provided by the elastic retaining device 323, that is, the adjustment mechanism 30 is kept in a locked state, ensuring the stability of the strength training device during training. When the moving part 31 needs to be adjusted (the constraint assembly 32 needs to be operated from the locked position to the unlocked position, and the adjustment mechanism 30 needs to be switched from the locked state to the unlocked state), the trainee can overcome the elastic force applied by the elastic retaining device 323 to the moving part 31 by operating the moving part 31 or the constraint assembly 32 to unlock the moving part 31. After the moving part 31 is adjusted, the trainee can directly release the moving part 31 or the constraint assembly 32 to allow the elastic retaining device 323 to act on the moving part 31, so that the constraint assembly 32 is reset to the locked position, thereby ensuring that the adjustment assembly is in a locked state during training.

[0081] As can be seen from the above, the elastic retaining device 323 is mainly used to continuously apply elastic force to the restraining assembly 32 to move from the unlocking position to the locking position. Here, the elastic force provided by the elastic retaining device 323 can be either a thrust or a pull. It should be understood that the elastic retaining device 323 can be a component that uses the elastic properties of the material to achieve the above function, and can be, but not limited to, a spring, a tension spring, rubber, silicone, polyurethane, etc.

[0082] Please continue to refer to the attached Figure 1-Figure 3 , Figure 5-Figure 12 Based on the implementation method in which the above-mentioned activity type is a rotational connection, the moving component 31 of this embodiment is a swing arm, and the swing arm can be set to be a long strip structure extending in a straight line direction, or, in other implementation methods, the swing arm can also be an arc-shaped strip structure.

[0083] One end of the swing arm is rotatably set on the pedal 20, and the other end of the swing arm is used to provide a position for installing the pull-cord connecting mechanism 40. That is to say, the rotational connection between the swing arm and the pedal 20 needs to be staggered with the position of the swing arm used to provide the pull-cord connecting mechanism 40, so that when one end of the swing arm rotates relative to the pedal 20, the other end of the swing arm can change its relative position with respect to the pedal 20 around the rotation axis of the swing arm, so as to meet different training programs and individual differences.

[0084] Of course, in some embodiments, the pull cord connection mechanism 40 can also be as follows Figure 2 As shown, the adjustment assembly is detachably arranged on the stand 10 , that is, in this embodiment, the adjustment mechanism 30 is arranged to be detachably mounted on the stand 10 or the pedal 20 .

[0085] The strength training device can achieve at least one of the above-mentioned front-to-back adjustment, width adjustment and height adjustment by adjusting the swing arm on the pedal 20. It only needs to adjust the rotation axis between the swing arm and the pedal 20 accordingly according to the adjustment requirements. For example, in the present embodiment, the rotation axis of the swing arm on the pedal 20 is perpendicular or nearly perpendicular to the surface of the pedal 20. At this time, when the swing arm moves relative to the pedal 20, the end of the swing arm used to provide the pull rope connection mechanism 40 will produce corresponding position changes along the width and front-to-back direction of the pedal 20; in other embodiments, if the rotation axis of the swing arm on the pedal 20 is set to be parallel or nearly parallel to the surface of the pedal 20, when the swing arm moves relative to the pedal 20, the end of the swing arm used to provide the pull rope connection mechanism 40 will produce corresponding position changes along the front-to-back direction and height direction of the pedal 20.

[0086] Of course, the adjustment method and structure of the moving component 31 on the pedal 20 are not limited to this. In other embodiments, the moving component 31 can also be set as a turntable or other moving component 31 that can be rotatably arranged on the pedal 20. As long as it conforms to the above-mentioned adjustment of staggering the rotation center and the pull-cord connecting mechanism 40, it can meet the need for corresponding adjustment of the position of the pull-cord connecting mechanism 40 relative to the pedal 20.

[0087] Below, the moving component 31 is continued to be used as an implementation of a swing arm, and the application of the above-mentioned series of features such as the first adjustment structure 321, the second adjustment structure 322 and the elastic retaining device 323 on the swing arm is further explained.

[0088] Among them, the constraint component 32 serving as the swing arm includes a swivel sleeve and a rotating shaft. The swivel sleeve and the rotating shaft can be understood as the first adjustment structure 321 and the second adjustment structure 322 mentioned in the above embodiment. That is to say, the swivel sleeve is arranged at one end of the swing arm, and the rotating shaft is correspondingly connected to the pedal 20. Of course, in other embodiments, the swivel sleeve can also be installed on the pedal 20, and correspondingly, a matching rotating shaft is arranged at one end of the swing arm. However, the constraint component 32 of this embodiment is more difficult to assemble than the embodiment in which the swivel sleeve is arranged on the swing arm and the rotating shaft is connected to the pedal 20 in this embodiment, which is not conducive to improving the production efficiency of the equipment and the subsequent inspection and maintenance.

[0089] Specifically, an axial hole 3212 is provided on the rotating sleeve, and the rotating sleeve can be rotatably mounted on the rotating shaft through the axial hole 3212, and the rotating sleeve can move axially relative to the rotating shaft. That is to say, in addition to the relative rotation between the rotating sleeve and the rotating shaft to achieve the purpose of active adjustment of the pull rope connecting mechanism 40 on the pedal 20, the rotating sleeve and the rotating shaft can also achieve relative axial movement to achieve the switching of the constraint assembly 32 between the locked position and the unlocked position.

[0090] It is worth mentioning that the design of the swivel sleeve usually takes into account wear resistance, stability and flexibility, and is usually made of a material with relatively high structural strength so that the constraint assembly 32 can withstand the force generated by the trainee during strength training. The shaft is the fixed point connecting the swing arm and the pedal 20. In order to ensure that it can withstand a high-intensity torque and has excellent stability and durability, the shaft is usually also made of a material with high structural strength.

[0091] Through the combination of the rotating sleeve and the rotating shaft, the swing arm and pedal 20 of the strength training equipment can achieve flexible adjustment and stable support. The trainee can adjust the angle of the swing arm on the pedal 20 according to his or her training needs and physical conditions, thereby achieving adjustment of at least one of the front and back, width, and height directions on the pedal 20.

[0092] Taking the above-mentioned embodiment, in which the rotation axis of the swing arm is set to be perpendicular to the pedal 20 as an example, when the pedal 20 is provided with swing arms on both sides of the opposite sides in the width direction, the two swing arms can be rotated relative to the pedal 20 to adjust the distance between the pull rope connecting mechanisms 40 thereon, so as to solve the problem that the width of the pedal 20 is too narrow, which also causes the training movements of the trainee to be limited. At the same time, after the training, the swing arm can also be rotated towards the pedal 20 to facilitate the subsequent storage of the equipment, thereby ensuring the compactness and portability of the equipment.

[0093] In the present embodiment, the first limiting portion 3211 is arranged on the hole wall of the shaft hole 3212, and the second limiting portion 3221 is correspondingly arranged on the outer periphery of the rotating shaft so that when the rotating sleeve is sleeved on the rotating shaft, the first limiting portion 3211 located on the hole wall of the shaft hole 3212 can achieve the effect of aligning and matching with the second limiting portion 3221 located on the outer periphery of the rotating shaft. Similar to the above-mentioned embodiment, at least one of the first limiting portion 3211 and the second limiting portion 3221 needs to be ensured to be multiple, so as to meet the requirement of multi-level adjustment between the rotating sleeve (swing arm) and the rotating shaft (pedal 20).

[0094] Exemplarily, in an embodiment where the first limiting portion 3211 and the second limiting portion 3221 are respectively a buckle and a slot with matching structures, one of the buckle and the slot is set to multiple, and under the action of the swing arm, the buckle / slot on the rotating sleeve will produce a relative displacement with the slot / buckle set on the outer periphery of the rotating shaft, and when the rotating sleeve and the rotating shaft are rotated to a position where one of the buckles and the slot is relative, the rotating sleeve and the rotating shaft can achieve locking of the swing arm at a corresponding angle through the relative cooperation of the buckle and the slot, and when the trainer needs to adjust the swing arm again, the trainer can apply a force in the direction of rotation to the swing arm to disengage the buckle from the slot, thereby unlocking the swing arm and the pedal 20, so that it can be locked again through the buckle and the slot at the next preset position.

[0095] Of course, the structure adopted between the first limiting portion 3211 and the second limiting portion 3221 is not limited to this. This embodiment is described by way of example in the above content, so it will not be described in detail in this embodiment.

[0096] In the above-mentioned embodiment, it is mentioned that in the embodiment using the rotating sleeve and the rotating shaft as the constraint component 32, the rotating sleeve can switch the locking position and the unlocking position of the constraint component 32 by relative movement with the rotating shaft in the axial direction. Therefore, in this embodiment, when the constraint component 32 is in the locking position, the first limiting portion 3211 and the second limiting portion 3221 are axially close to each other and are in a limited fit between the rotating sleeve and the rotating shaft; and when the constraint component 32 is in the unlocking position, the first limiting portion 3211 and the second limiting portion 3221 are axially far away from each other and are out of fit between the rotating sleeve and the rotating shaft. That is to say, when the rotating sleeve and the rotating shaft generate relative movement in the axial direction, the first limiting portion 3211 and the second limiting portion 3221 located on the rotating sleeve and the rotating shaft respectively will also move in the direction of approaching or moving away from each other. When the first limiting portion 3211 and the second limiting portion 3221 are close enough in the axial direction, the two can achieve locking cooperation. When the distance between the two is far enough in the axial direction, the first limiting portion 3211 and the second limiting portion 3221 will disengage from each other, finally realizing the switching of the adjustment mechanism 30 between the locked state and the unlocked state.

[0097] Through the above-mentioned implementation mode, the trainee can lock, unlock and adjust the activity of the swing arm relative to the pedal 20 by only operating the swing arm. The trainee can achieve relative locking or unlocking with the pedal 20 by pressing and pulling along the axial direction, and achieve rotational adjustment of the swing arm by pushing and pulling along the circumferential direction, which greatly simplifies the operating procedures during the swing arm adjustment process. In addition, the movement directions of locking, unlocking and activity adjustment are different, which also reduces the risk of trainee's misoperation to a certain extent. While improving the convenience of swing arm adjustment, it also ensures the safety of the equipment and the trainee.

[0098] Please continue to refer to the attached Figure 5-Figure 11 From the above content, it can be understood that the first limiting portion 3211 and the second limiting portion 3221 are both arranged around the rotation axis between the rotating sleeve and the rotating shaft, and when there are multiple first limiting portions 3211, multiple first limiting portions 3211 are distributed on the hole wall of the shaft hole 3212 around the rotation axis of the rotating sleeve at intervals; correspondingly, when there are multiple second limiting portions 3221, multiple second limiting portions 3221 are distributed on the outer periphery of the rotating shaft around the rotation axis of the rotating shaft at intervals, and the spacing between any two adjacent second limiting portions 3221 is consistent with the spacing between any two adjacent first limiting portions 3211, so as to ensure that the first limiting portion 3211 and the second limiting portion 3221 can lock the swing arm on the pedal 20 by locking cooperation within the preset adjustment range.

[0099] For example, in the present embodiment, the first limiting portion 3211 and the second limiting portion 3221 are both provided with multiple implementations. The first adjustment structure 321 may be a first gear disposed in the shaft hole 3212 of the rotating sleeve, and the first limiting portion 3211 is a tooth disposed on the hole wall of the shaft hole 3212. Correspondingly, the second adjustment structure 322 is a second gear disposed on the rotating shaft, and the second gear is also formed by a plurality of teeth surrounding the rotating shaft, that is, the first gear is an internal gear, and the second gear is an external gear. A tooth groove is formed between the teeth of the second gear for the first limiting portion 3211 to be placed in, and a tooth groove is also formed between the teeth of the first gear for the second limiting portion 3221 to be placed in. The rotating sleeve and the rotating shaft can be provided with the first gear sleeved on the second gear, so that the teeth and tooth grooves between the first gear and the second gear cooperate with each other, thereby achieving relative fixation of the two in the direction of rotation. In addition, due to the structural consistency of the gears and tooth grooves in the axial direction, the rotating sleeve and the rotating shaft can also relatively easily move along the axial direction to allow the first gear and the second gear to disengage along the axial direction, thereby unlocking the rotating sleeve and the rotating shaft.

[0100] Of course, in other embodiments, when there are multiple first limiting portions 3211 and second limiting portions 3221, the first limiting portions 3211 and the second limiting portions 3221 can also adopt but are not limited to cooperating slots and buckles, magnetic components, friction components and other cooperating methods.

[0101] In order to enable the constraint assembly 32 to switch between the locked position and the unlocked position by axial relative movement between the rotating sleeve and the rotating shaft, when the rotating sleeve is arranged on the swing arm, a movable gap is formed between the rotating sleeve and the pedal 20, and the rotating sleeve can move axially along the rotating shaft to lock the first limit portion 3211 and the second limit portion 3221 into or disengage from each other.

[0102] Illustratively, in the present embodiment, the swing arm is arranged in a manner in which its rotation axis is perpendicular or close to perpendicular to the surface of the pedal 20, the rotating shaft is arranged on the pedal 20 perpendicular or close to perpendicular to the surface of the pedal 20, and one end of the swing arm is arranged on the rotating shaft through a rotating sleeve. The swing arm realizes its own locking and unlocking by moving closer to and away from the surface of the pedal 20.

[0103] The elastic retaining device 323 is arranged in the movable gap. The elastic retaining device 323 is used to apply a force to the rotating sleeve and the pedal 20 to move away from each other, so that the first limiting portion 3211 has a tendency to move toward the second limiting portion 3221. In this way, when there is no other external force on the swing arm, the first limiting portion 3211 can maintain a locked fit with the second limiting portion 3221, ensuring the relative locking of the swing arm and the pedal 20, thereby ensuring the stability of the strength training equipment during training.

[0104] In one embodiment, the end of the shaft hole 3212 on the rotating sleeve away from the pedal 20 is provided with the first limiting portion 3211, and the end of the rotating shaft away from the pedal 20 is provided with the second limiting portion 3221. The axial dimensions of the first limiting portion 3211 and the second limiting portion 3221 are both smaller than the maximum movable gap between the rotating sleeve and the pedal 20. In this way, when the trainer drives the swing arm and allows the swing arm to drive the rotating sleeve to overcome the force of the elastic retaining device 323 and move toward the pedal 20, it can ensure that the first limiting portion 3211 can be separated from the second limiting portion 3221, so that the swing arm is unlocked, and the swing arm can be rotated around the rotating shaft in the subsequent unlocked state. After the swing arm activity adjustment is completed, the trainer can release the swing arm, so that the elastic retaining device 323 drives the rotating sleeve to move away from the pedal 20 to reset, and finally the first limiting portion 3211 and the second limiting portion 3221 are re-locked and matched, completing the locking of the swing arm.

[0105] It can be understood that, taking the above-mentioned implementation method in which the rotating shaft is perpendicular to the surface of the pedal 20 as an example, the unlocking method of the swing arm described in the above exemplary embodiment is a method of pressing from top to bottom. In this way, when the strength training equipment is in use, the pull rope will apply a bottom-up force to the swing arm through the pull rope connecting mechanism 40 (the trainee will use the training accessories (hanging device 50) and the pull rope to perform training projects such as bench press and squat to apply an upward force to the pull rope connecting mechanism 40). Therefore, the swing arm will also apply a force to the rotating sleeve in the direction away from the pedal 20, ensuring that the rotating shaft can always be in a position relatively away from the pedal 20 along the axial direction, which helps to keep the constraint assembly 32 in the locked position, avoid the situation where the swing arm suddenly loosens during training, protect the safety of the equipment and the trainee, and allow the pull rope connecting mechanism 40 to always maintain a relative position with the pedal 20, thereby ensuring that the force application position can meet the requirements of the current training project.

[0106] Of course, in other embodiments, the swing arm may also be unlocked in other ways, for example, a pulling method as opposed to the above-mentioned pressing method. In this way, the first limit portion 3211 is arranged at the end of the shaft hole 3212 close to the pedal 20, and the second limit portion 3221 is arranged at the end of the shaft close to the pedal 20. The first limit portion 3211 and the second limit portion 3221 are locked together when the rotating sleeve is close to the pedal 20, and the movable gap of the rotating sleeve is at the end away from the pedal 20, so as to achieve unlocking by pulling the swing arm to move in a direction away from the pedal 20.

[0107] Continuing on the basis of the above implementation method, Figure 5 , Figure 9-11 As shown in the figure, a limiting component 325 is also provided between the rotating sleeve and the rotating shaft. The limiting component 325 is provided at the end of the rotating sleeve away from the pedal 20 and is connected to the rotating shaft, and is used to constrain the rotating sleeve to move to the extreme position away from the pedal 20, so as to prevent the swing arm from being separated from the rotating shaft under the action of the elastic retaining device 323.

[0108] In one embodiment, the limiting component 325 may be a bolt screwed to the end of the rotating shaft.

[0109] As can be seen from the above, the elastic retaining device 323 is mainly used to continuously apply elastic force to the restraining assembly 32 to move from the unlocking position to the locking position. Here, the elastic force provided by the elastic retaining device 323 can be either a thrust or a pull. It should be understood that the elastic retaining device 323 can be a component that uses the elastic properties of the material to achieve the above function, and can be, but not limited to, a spring, a tension spring, rubber, silicone, polyurethane, etc.

[0110] In one embodiment, the elastic retaining device 323 is a compression spring, which is sleeved on the rotating shaft. A step structure for providing a compression spring to abut against may be provided in the rotating sleeve, or the compression spring may directly act on the first limiting portion 3211. The opposite ends of the compression spring respectively abut on the pedal 20 and the rotating sleeve, thereby continuously applying an elastic force to the rotating sleeve to move away from the pedal 20. By setting the elastic retaining device 323 as a compression spring that can be sleeved on the rotating shaft, and integrating the relevant structures and components (the first limiting portion 3211, the second limiting portion 3221 and the elastic retaining device 323) between the rotating sleeve and the rotating shaft, the compactness of the structure between the rotating sleeve and the rotating shaft can be effectively improved, and the interference of the adjustment mechanism 30 on the standing area of ​​the pedal 20 can be reduced, so that the trainee can stand more freely on the basis of adjusting the position of the pull rope connecting mechanism 40 through the adjustment mechanism 30, and avoid the adjustment mechanism 30 constraining the trainee's movements.

[0111] It can be understood from the above-mentioned embodiments that the rotating sleeve and the rotating shaft are locked in the axial direction by applying corresponding forces (elastic force of the elastic retaining device 323) to the two.

[0112] Please refer to the attached Figure 6-Figure 11 , based on the implementation method in which the above-mentioned constraint component 32 includes a swivel sleeve and a rotating shaft, the swivel sleeve and the rotating shaft in this embodiment are constrained from relative movement in the axial direction by means of a locking member 324. The difference from the above-mentioned implementation method is that the above-mentioned implementation method applies a force to the swivel sleeve and the pedal 20 (rotating shaft) to maintain the locked position, while the present implementation method interferes with the movement trajectory of the swivel sleeve and the rotating shaft toward the unlocking position, thereby unlocking the swivel sleeve and the rotating shaft.

[0113] Specifically, a movable locking member 324 is disposed on the circumference of the rotating sleeve. The circumference here refers to the outer periphery of the rotating shaft when it moves along its rotation direction, and the locking member 324 can be disposed at any position on the circumference.

[0114] The locking member 324 is formed with a locking portion 3241 and a first operating portion 3242. Generally, the first operating portion 3242 is used to provide a position for the trainee to control the locking portion 3241. It is usually composed of a raised head. Its main function is to provide a convenient handle during the installation process so that the trainee can hold and operate the locking member 324. As for the specific structural form of the first operating portion 3242, this embodiment has no strict limitation, so it will not be further described here.

[0115] A retaining portion 3222 is provided on the circumferential side of the rotating shaft, and the retaining portion 3222 and the first operating portion 3242 are configured so that, during the relative movement of the rotating sleeve and the rotating shaft along the axial direction, the two can move towards or away from each other, and while being kept in a state of being close to each other along the axial direction with the first operating portion 3242, the locking portion 3241 can be locked and unlocked with the retaining portion 3222 under the action of the first operating portion 3242, thereby restricting the relative movement of the rotating sleeve and the rotating shaft in the axial direction.

[0116] It can be understood that the locking portion 3241 and the retaining portion 3222 can be respectively configured as components such as buckles and slots, magnetic components, friction components, pins and slots, keys and keyways that produce mutual cooperation and unlocking in the axial direction of the rotating sleeve and the rotating shaft.

[0117] In this embodiment, in order to facilitate the trainee's operation of locking and unlocking the swing arm, the first operating part 3242 is exposed on the outside of the rotating sleeve, and, when the locking part 3241 and the retaining part 3222 are axially close to each other, the trainee can drive the locking part 3241 to move between positions close to and away from the retaining part 3222 through the first operating part 3242, so that the locking part 3241 and the retaining part 3222 are locked and matched, locking the axial movement of the rotating sleeve and the rotating shaft, and disengaging the locking part 3241 from the retaining part 3222 to unlock the rotating sleeve and the rotating shaft.

[0118] It is worth mentioning that when the locking portion 3241 and the retaining portion 3222 are in a locked state, the constraint assembly 32 is in a locked position, that is, the locking portion 3241 and the retaining portion 322 can constrain the first adjustment structure 321 and the second adjustment structure 322 in a limited position matching state to prevent the swing arm and the pedal 20 from rotating relative to each other. When the locking portion 3241 and the retaining portion 322 are in a disengaged state, the constraint assembly 32 can switch between a locked position and an unlocked position, that is, the rotating sleeve can generate relative displacement with the rotating shaft along the axial direction at this time, thereby realizing the movable adjustment and locking of the swing arm.

[0119] In some embodiments, in order to ensure that the swing arm can be stably locked on the pedal 20 in the absence of other external forces and to constrain its movement in the rotation direction (preset direction), the locking portion 3241 has a tendency to move toward the retaining portion 3222.

[0120] Please continue to refer to the attached Figure 6-Figure 11 In one embodiment, the locking member 324 is a positioning pin, and correspondingly, the retaining portion 3222 is a slot opened on the circumferential side of the rotating shaft. The opposite ends of the positioning pin respectively form the above-mentioned locking portion 3241 and the first operating portion 3242. The positioning pin is movably connected to the rotating sleeve along the radial direction of the rotating sleeve. The first operating portion 3242, which can be used as a handle, is located outside the rotating sleeve, and the locking portion 3241 is located in the shaft hole 3212. When the trainee operates the positioning pin through the first operating portion 3242, the positioning pin can move relative to the rotating sleeve along the radial direction of the rotating sleeve, so that the locking portion 3241 can be inserted and pulled out of the shaft hole 3212, and the locking portion 3241 can be inserted into or pulled out of the slot.

[0121] This implementation achieves locking and matching of the rotating sleeve and the rotating shaft in axial movement through the positioning pin and the slot, which can effectively prevent the rotating sleeve and the rotating shaft from loosening or sliding along the axial direction during training, ensuring that the swing arm can stably maintain the selected position during training.

[0122] At the same time, because the unlocking direction of the positioning pin and the axial direction of the rotating shaft are two non-parallel movement directions, when the trainee needs to adjust the swing arm, he needs to operate the positioning pin in the radial direction to unlock the axial freedom of movement of the rotating sleeve and the rotating shaft, which reduces the possibility of user misoperation, makes the coordination relationship between the swing arm and the pedal 20 more stable and reliable, effectively avoids the sudden loosening of the swing arm during training, and effectively protects the trainee and the equipment itself.

[0123] In one embodiment, an elastic retaining device 323 is provided between the positioning pin and the rotating sleeve. From the above embodiment, it can be seen that the elastic retaining device 323 is used to act on the positioning pin so that the positioning pin has a tendency to move in the direction of the insertion shaft hole 3212 to ensure stable cooperation between the positioning pin and the slot.

[0124] Please continue to refer to the attached Figure 6-Figure 7 , Figure 10-11 In an embodiment in which an elastic retaining device 323 is provided between the positioning pin and the rotating sleeve, the elastic retaining device 323 can be a compression spring, which is sleeved on the positioning pin and acts on the positioning pin and the rotating sleeve to continuously provide elastic force for the locking portion 3241 in the direction of being inserted into the slot.

[0125] As an optional embodiment, in order to ensure that the compression spring can maintain a stable assembly relationship between the rotating sleeve and the locating pin, the locating pin is located between the first operating part 3242 and the locking part 3241 and is provided with a first limiting boss 3243, and a pin hole 3213 whose size is larger than the locating pin is opened on the side of the rotating sleeve. The pin hole 3213 can be arranged along the radial direction of the rotating sleeve so that the locating pin can be inserted into the pin hole 3213 in a manner that it can move along its own axial direction. The compression spring is sleeved on the pin body of the locating pin and is located in the pin hole 3213, one end of which abuts against the first limiting boss 3243, and the other end of the compression spring abuts against the rotating sleeve, so as to continuously apply a force to the locating pin through the first limiting boss 3243 in the direction of further inserting it into the shaft hole 3212.

[0126] As can be seen from the above, the elastic retaining device 323 is mainly used to continuously apply elastic force to the restraining assembly 32 to move from the unlocking position to the locking position. Here, the elastic force provided by the elastic retaining device 323 can be either a thrust or a pull. It should be understood that the elastic retaining device 323 can be a component that uses the elastic properties of the material to achieve the above function, and can be, but not limited to, a spring, a tension spring, rubber, silicone, polyurethane, etc.

[0127] As described above, when the trainee needs to make an active adjustment to the swing arm, the trainee holds the first operating portion 3242 of the positioning pin and pulls the positioning pin to disengage the locking portion 3241 from the slot, thereby achieving axial unlocking of the swivel sleeve and the rotating shaft; then, the trainee uses the swing arm to apply an axial force toward the pedal 20 to the swivel sleeve, so that the first adjustment structure 321 and the second adjustment structure 322 are disengaged, thereby achieving circumferential unlocking of the swivel sleeve and the rotating shaft, allowing the swing arm to rotate relative to the pedal 20 around the rotating shaft; after the swing arm activity adjustment is completed, the trainee needs to use the swing arm to apply an axial force away from the pedal 20 to the swivel sleeve, so that the first adjustment structure 321 and the second adjustment structure 322 are reset to a locked and matched state, thereby achieving relative locking of the swivel sleeve and the rotating shaft in the circumferential rotation direction; finally, the trainee releases the positioning pin to reinsert the locking portion 3241 into the slot, thereby achieving axial locking of the swivel sleeve and the rotating shaft.

[0128] It can be understood from the above content that, in addition to the swing arm as described above, the moving component 31 can also adjust the relative position of the pull cord connection mechanism 40 and the pedal 20 by telescoping. In one embodiment, the moving component 31 is an example of a telescopic rod, wherein the first end of the telescopic rod is mounted on the pedal 20, and the second end of the telescopic rod can perform telescopic movement relative to the first end thereof, and is used to provide a position for the pull cord connection mechanism 40 to be installed.

[0129] It is understandable that the telescopic rod can be composed of a plurality of telescopically matched parts, and by adjusting the number and arrangement of each part, the relative position of the pull cord connection mechanism 40 and the pedal 20 can be precisely adjusted. By increasing or decreasing the number of parts in the telescopic rod, the limit distance between the tension connection mechanism and the pedal 20 can be easily changed. This adjustment method enables the strength training device to adapt to the height, body shape and training needs of different users, providing a more personalized training experience.

[0130] First, the design of the telescopic rod allows the trainee to adjust its length as needed, so that the pull rope adjustment mechanism 30 can be adjusted in at least one direction of the width, front-to-back direction, and height direction on the pedal 20 according to the adjustment direction of the telescopic rod.

[0131] It should be noted that telescopic rods can be used in different structural forms to meet the needs of different applications and functions, such as:

[0132] Multi-stage telescopic structure: It is composed of multiple overlapping rod segments, and the length of the rod segment is adjusted by sliding or rotating mechanism to adjust the relative position of the pull rope adjustment mechanism 30 and the pedal 20. In this embodiment, each rod segment can also be fixed to each other by the constraint assembly 32 mentioned above, so as to ensure the stability of the telescopic rod in a specific position.

[0133] Pneumatic or hydraulic telescopic structure: The telescopic rod is filled with gas or liquid, and the telescopic function is achieved by controlling the internal pressure. The trainee can adjust the pressure of the gas or liquid inside the telescopic rod manually or electrically to change the length of the telescopic rod.

[0134] Spiral telescopic structure: adopts a spiral design, and the length of each component is adjusted by a rotating mechanism. The spiral structure enables the telescopic rod to maintain stability and strength during the telescopic process, which is conducive to maintaining the stability of the pull rope connection mechanism 40 on the pedal 20.

[0135] Of course, the above-mentioned embodiment of providing the swing arm as the moving part 31 and the embodiment of using the telescopic rod as the moving part 31 can be used in combination, for example:

[0136] One end of the telescopic rod is mounted on the basis of the pedal 20, and the swing arm is mounted on the other end of the telescopic rod, and a position for mounting the pull rope connection mechanism 40 is provided through the end of the swing arm away from the telescopic rod;

[0137] One end of the swing arm is mounted on the basis of the pedal 20, and the telescopic rod is mounted on the other end of the swing arm, and a position for mounting the pull rope connection mechanism 40 is provided through one end of the telescopic rod away from the telescopic rod.

[0138] The pull cord connection mechanism 40 can be adjusted on the pedal 20 through the cooperation of the swing arm and the telescopic rod, so as to further improve the adjustment freedom of the pull cord connection mechanism 40 on the pedal 20.

[0139] According to any of the above embodiments, Figure 12-13 As shown, as a specific structural form of the pull rope connection mechanism 40, it includes a lead component 41 and a limit assembly 42. The lead component 41 is provided with a winding groove 411 for providing a pull rope to resist winding, so that the pull rope (or steel cable) can be placed in the winding groove 411 to achieve the support, steering and other effects mentioned in the above embodiment. The limit assembly 42 is used to constrain the pull rope to be placed in the winding groove 411, and release the constraint on the pull rope in the winding groove 411, so that the pull rope can be separated from the lead component 41 through the notch of the winding groove 411. Here, the limit assembly 42 can be movably arranged on one side of the lead component 41, and the limit assembly 42 can move relative to the lead component 41, and move in the direction of blocking the notch of the winding groove 411 and avoiding the notch of the winding groove 411, so as to adjust the notch size of the winding groove 411.

[0140] It should be explained that the limiting component 42 can adjust the size of the notch of the winding groove 411 to be larger than the diameter of the drawstring, or smaller than the diameter of the drawstring. When the notch of the winding groove 411 is adjusted by the limiting component 42 to be larger than the diameter of the drawstring, the drawstring can be inserted into the winding groove 411 through the notch of the winding groove 411, and the drawstring can be separated from the lead component 41 through the notch of the winding groove 411; when the notch of the winding groove 411 is adjusted by the limiting component 42 to be smaller than the diameter of the drawstring, the drawstring cannot be separated from the notch of the winding groove 411, and the drawstring cannot be inserted into the winding groove 411 through the notch of the winding groove 411, thereby preventing the drawstring from being separated from the drawstring connection mechanism 40, ensuring the stable layout of the drawstring on the strength training device, and providing effective protection for the trainer and the device itself.

[0141] In one embodiment, the lead component 41 can be configured as a pulley that can rotate relative to the adjustment mechanism 30 so as to rotate along with the movement of the pull rope during strength training equipment training, thereby reducing the friction between the pull rope and the lead component 41 and maintaining the stability of the pull rope on the pedal 20 and the stand 10.

[0142] It can be understood that in this embodiment, the winding groove 411 is recessed on the pulley surface in the circumferential direction of the pulley, and the opposite sides of the winding groove 411 are constrained by the groove wall of the winding groove 411. The limiting component 42 can move towards and away from the winding groove 411 in the radial, axial and circumferential directions of the pulley, thereby adjusting the size of the notch of the winding groove 411.

[0143] In one embodiment, in order to improve the stability of the pull rope docking mechanism 40 on the adjustment mechanism 30 (moving component 31), the pull rope docking mechanism 40 further includes a transition bracket 43. The transition bracket 43 is a supporting body of the pull rope docking mechanism 40 and is rotatably disposed on the stand 10 or the adjustment mechanism 30, and the lead component 41 as a pulley is rotatably disposed on the transition bracket 43, and the rotation axis of the lead component 41 is perpendicular to the rotation axis of the transition bracket 43. In this way, during the use of the strength training device, the transition bracket 43 can compensate for the shaking of the pull rope during the activity and the differences in position and direction caused by different training movements of the trainer through its relative rotation relative to the adjustment mechanism 30 (moving component 31), thereby ensuring the stability of the pull rope on the stand 10 and the pedal 20, further reducing the friction generated between the pull rope and the lead component 41, making the movement of the pull rope smoother and improving the training effect.

[0144] Correspondingly, the limiting assembly 42 includes a limiting rod 421, which can be movably inserted into the transition bracket 43. The limiting rod 421 can move in the direction of blocking the notch of the winding groove 411 and avoiding the notch of the limiting groove. It can be understood from the above that the movement direction of the limiting rod 421 can be but is not limited to being set to be parallel to the axial direction and radial direction of the lead component 41.

[0145] In this embodiment, the limiting rod 421 is arranged on one side of the lead component 41, and the limiting rod 421 can move in a direction parallel to the axial direction of the lead component 41 to adjust the size of the grass wire groove in a manner similar to opening and closing the groove of the winding groove 411.

[0146] In this embodiment, the limit assembly 42 also includes an elastic reset component 422, which is arranged between the transition bracket 43 and the limit rod 421, and is used to act on the limit rod 421 so that the limit rod 421 has a tendency to move in the direction of the notch of the blocking limit groove, so that the limit rod 421 can remain in the state of constraining the pull rope in the absence of other external forces, thereby preventing the pull rope from detaching from the lead component 41.

[0147] It is worth mentioning that the state in which the above-mentioned limiting component 42 blocks the notch of the winding groove 411 does not mean that the limiting component 42 completely blocks the notch of the limiting groove, but means that the notch is in a state smaller than the diameter of the pull rope, and the limiting component 42 avoids / opens the notch of the limiting groove, which does not mean that the limiting component 42 completely avoids the notch of the limiting groove or that the notch of the limiting groove is completely open, but means that the notch of the limiting groove is in a state larger than the diameter of the pull rope.

[0148] In one embodiment, the limiting rod 421 also has a second operating portion 4211 that can be operated by the trainer. The trainer can apply a corresponding force to the limiting rod 421 through the second operating portion 4211, and finally achieve the limiting rod 421 to move from the state of blocking the notch of the winding groove 411 to the state of avoiding the notch of the winding groove 411 by overcoming the elastic force of the elastic reset component 422. After the trainer releases the second operating portion 4211, the elastic reset component 422 acts on the limiting rod 421, so that the limiting rod 421 moves and resets to the state where the rod body blocks the notch of the winding groove 411, thereby limiting the pull rope from being disengaged.

[0149] In order to constrain the position of the limit rod 421 on the transition bracket 43, a second limit boss 4212 is also provided at the other end of the limit rod 421, under the premise that the limit groove is provided with a second operating part 4211 at one end thereof. The second operating part 4211 and the second limit boss 4212 are respectively located on the opposite sides of the transition bracket 43, and the sizes of the second limit boss 4212 and the second operating part 4211 are larger than the size of the through hole opened on the transition bracket 43 for the movably connected limit rod 421, so that the second limit boss 4212 cooperates with the second operating part 4211 to constrain the axial limit position of the limit rod 421 on the transition bracket 43. The elastic reset component 422 can be arranged between the second limiting boss 4212 and the transition bracket 43, and the force it applies to the limiting rod 421 can be a pulling force or a pushing force, and the operation mode of the second operating part 4211 can be adaptively set to a pressing operation or a pulling operation according to the force applied by the elastic reset component 422 to the limiting rod 421.

[0150] Please refer to the attached Figure 1-Figure 2 It can be understood from the above content that the stand 10 is provided with an adjustment seat 12 that can be movably adjusted along the height direction, and the pull rope connecting mechanism 40 can be selectively set on the stand 10 or the pedal 20 according to the training program.

[0151] In one embodiment, a wire guide mechanism 13 that can move relative to the frame 10 is provided at one end of the frame 10 close to the pedal 20. The pull rope extending from the chassis of the strength training equipment can successively abut against the wire guide mechanism 13 and the pull rope connecting mechanism 40 to ensure the stability of the pull rope when the pull rope connecting mechanism 40 is set on the pedal 20.

[0152] Specifically, the direction of movement of the guide mechanism 13 relative to the stand 10 can be but is not limited to the direction around a vertically set rotation axis, or it can be around a horizontally set rotation axis, which can be determined according to the specific layout of the pull rope between the stand 10 and the pedal 20.

[0153] In this embodiment, the guide mechanism 13 is configured to be a structure that can swing around a vertically arranged rotation axis to compensate for the shaking of the pull rope during its movement relative to the stand 10 and the pedal 20, as well as the differences in position and direction caused by different training movements of the trainee, thereby ensuring the stability of the pull rope on the stand 10 and the pedal 20.

[0154] For example, when the pull cord connection mechanism 40 is set on the pedal 20 through the adjustment mechanism 30, the distance between the pull cord connection mechanisms 40 located on opposite sides of the pedal will be greater than the width of the pedal 20 under the adjustment of the swing arm. Therefore, the distance between the two lead mechanisms 13 installed on the stand 10 will be less than the distance between the two pull cord connection mechanisms 40. This will cause the pull cord to be stuck when the lead direction from the lead mechanism 13 to the pull cord connection mechanism 40 changes. There is a risk that the pull cord will be stuck at the lead mechanism 13 and difficult to reel in and out smoothly. By movably setting the lead mechanism 13 on the stand 10, the lead mechanism 13 can change its angle relationship with the stand 10 in accordance with the change of the lead direction of the pull cord, thereby meeting the requirements under different lead directions and ensuring the smooth movement of the pull cord between the lead mechanism 13 and the pull cord lead mechanism 13.

[0155] As shown in Figure 1- Figure 2 The wire guide mechanism 13 includes a wheel frame arranged on the frame 10 and a pulley rotatably arranged on the wheel frame. According to the above embodiment, the wheel frame can be arranged on the frame 10 by a rotational connection, and the rotation axis of the wheel frame relative to the frame 10 and the rotation axis of the pulley arranged on the wheel frame are not parallel to each other, ensuring that the movement of the wheel frame can compensate for the force generated by the pull rope in the axial direction of the pulley.

[0156] Please continue to refer to the attached Figure 1-Figure 2 From the above content, it can be seen that the stand 10 of the strength training equipment is an important structure for supporting and fixing the training components. Its parameters such as height, width and angle can be adjusted according to training needs to adapt to the body shape and training goals of different users. It can also be equipped with various training accessories, such as barbells, dumbbells, pullers, etc., to meet diverse training needs.

[0157] The stand 10 usually has a relatively stable basic structure to support the entire device and withstand the forces generated during training. Generally, the stand 10 includes the following main components:

[0158] Based on the above embodiment, the pedal 20 can be provided with adjustment mechanisms 30 on both sides along its width direction to compensate for the relatively small size of the pedal 20. The pull rope connection mechanism 40 is installed on the pedal 20 through the adjustment mechanisms 30 respectively located on both sides of the pedal 20.

[0159] It can be understood from the above-mentioned embodiment that the pull-cord connecting mechanism 40 can realize adjustment of its relative position with the pedal 20 through the adjustment mechanism 30, that is, the pull-cord connecting mechanism 40 located on both sides of the pedal 20 can be synchronously adjusted through the corresponding adjustment mechanism 30, for example, synchronously adjusted relative to the pedal 20 along the width direction to narrow or widen the distance between the two pull-cord connecting mechanisms 40 in the width direction of the pedal 20, or synchronously adjusted relative to the pedal 20 along the front-to-back direction to adjust the force position provided by the two pull-cord connecting mechanisms 40 and adjust the standing posture of the trainee on the pedal 20, or synchronously adjusted relative to the pedal 20 along the height direction to adjust the height position of the two pull-cord connecting mechanisms 40 on the pedal 20, which is suitable for more different training items, etc.

[0160] In summary, in the strength training equipment provided by the utility model, the pull-cord connecting mechanism 40 is movably arranged on the pedal 20 through the adjusting mechanism 30, and the pull-cord connecting mechanism 40 is optionally installed on the pedal 20 and the stand 10, thereby greatly improving the versatility of the equipment and the types of trainees it is suitable for. On the basis of ensuring the compactness and miniaturization of the strength training equipment, the limitations of the equipment on training objectives and training movements are reduced as much as possible, and the needs of trainees of different body shapes for different training programs are met.

[0161] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0162] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0163] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0164] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A strength training device, characterized in that: include: Stand (10); A pedal (20) connected to the stand (10) and arranged at an angle to the stand (10); An adjusting mechanism (30), one end of which is movably disposed on the pedal (20) and has a locked state and an unlocked state; when the adjusting mechanism (30) is in the locked state, the adjusting mechanism (30) and the pedal (20) are relatively fixed in a preset direction; when the adjusting mechanism (30) is in the unlocked state, the adjusting mechanism (30) can be movably adjusted relative to the pedal (20) in a preset direction; A pull rope connection mechanism (40) is arranged at the other end of the adjustment mechanism (30).

2. The strength training device according to claim 1, characterized in that: The regulating mechanism (30) comprises: A moving component (31) is movably disposed on the pedal (20) and is used to provide a position for installing the pull rope connection mechanism (40); A constraint assembly (32) is arranged between the moving component (31) and the pedal (20), and the constraint assembly (32) and the moving component (31) can move relative to each other between a locked position and an unlocked position; in the locked position, the adjustment mechanism (30) is in a locked state, and the constraint assembly (32) limits the movement of the moving component (31) in a preset direction; in the unlocked position, the adjustment mechanism (30) is in an unlocked state, and the constraint assembly (32) releases the restriction on the moving component (31) in the preset direction.

3. The strength training device according to claim 2, characterized in that: The restraining component (32) comprises: A first adjustment structure (321), arranged on the moving component (31), the first adjustment structure (321) being provided with a first limiting portion (3211); a second adjustment structure (322), arranged on the pedal (20) and movably connected to the first adjustment structure (321), the second adjustment structure (322) being provided with a second limiting portion (3221), at least one of the first limiting portion (3211) and the second limiting portion (3221) being plural; When the constraint assembly (32) is in a locked position, the first limiting portion (3211) and the second limiting portion (3221) are in limiting cooperation; when the constraint assembly (32) is in an unlocked position, the first limiting portion (3211) and the second limiting portion (3221) are disengaged.

4. The strength training device according to claim 2, characterized in that: The adjustment mechanism (30) further comprises: An elastic retaining device (323), wherein the elastic retaining device (323) is arranged between the moving component (31) and the restraining component (32), and the elastic retaining device (323) is used to act on the moving component (31) and the restraining component (32) so that the two have a tendency to move relative to each other in the direction of the locking position.

5. The strength training apparatus according to any one of claims 2 to 4, characterized in that: The moving part (31) is a swing arm; One end of the swing arm is rotatably arranged on the pedal (20), and the other end of the swing arm is used to provide a position for installing the pull rope connection mechanism (40); The restraining component (32) comprises: A rotating sleeve, arranged at one end of the swing arm; A rotating shaft connected to the pedal (20), the rotating sleeve being rotatably sleeved on the rotating shaft through an axial hole (3212), and the rotating sleeve being movable relative to the rotating shaft in an axial direction; A first limiting portion (3211) is provided on the hole wall of the shaft hole (3212), a second limiting portion (3221) is provided on the outer periphery of the rotating shaft, and at least one of the first limiting portion (3211) and the second limiting portion (3221) is provided in plurality; When the constraint assembly (32) is in the locked position, the first limiting portion (3211) and the second limiting portion (3221) are axially close to each other and are limitedly engaged; when the constraint assembly (32) is in the unlocked position, the first limiting portion (3211) and the second limiting portion (3221) are axially away from each other and are disengaged.

6. The strength training apparatus according to claim 5, characterized in that: There are a plurality of the first limiting portions (3211), and the plurality of the first limiting portions (3211) are spaced apart and distributed around the rotation axis of the rotating sleeve; and / or There are a plurality of the second limiting portions (3221), and the plurality of the second limiting portions (3221) are spaced apart around the rotation axis of the rotating shaft, and the distance between any two adjacent second limiting portions (3221) is consistent with the distance between any two adjacent first limiting portions (3211).

7. The strength training apparatus according to claim 5, characterized in that: A movable gap is formed between the rotating sleeve and the pedal (20); An elastic retaining device (323) is provided in the movable gap, and the elastic retaining device (323) is used to apply a force to the rotating sleeve and the pedal (20) to move in directions away from each other, so that the first limiting portion (3211) has a tendency to move in a direction close to the second limiting portion (3221).

8. The strength training apparatus according to claim 5, characterized in that: A movable locking member (324) is arranged on the circumferential side of the rotating sleeve, and the locking member (324) device is formed with a locking portion (3241) and a first operating portion (3242), and a retaining portion (3222) is arranged on the circumferential side of the rotating shaft; The first operating portion (3242) is exposed on the outside of the rotating sleeve, and can drive the locking portion (3241) to move between positions close to and away from the retaining portion (3222), so that the locking portion (3241) and the retaining portion (3222) are locked and matched to lock the axial movement of the rotating sleeve and the rotating shaft; and, the locking portion (3241) is disengaged from the retaining portion (3222) to unlock the rotating sleeve and the rotating shaft.

9. The strength training apparatus according to claim 8, characterized in that: The locking member (324) is a positioning pin, and the opposite ends of the positioning pin respectively form the locking portion (3241) and the first operating portion (3242), and the positioning pin is movably connected to the rotating sleeve along the radial direction of the rotating sleeve; An elastic retaining device (323) is provided between the positioning pin and the rotating sleeve, and the elastic retaining device (323) is used to act on the positioning pin so that the positioning pin has a tendency to move in a direction of being inserted into the shaft hole (3212); The retaining portion (3222) is a slot provided on the circumferential side of the rotating shaft.

10. The strength training apparatus according to any one of claims 2 to 4, characterized in that: The moving part (31) is a telescopic rod; The first end of the telescopic rod is mounted on the pedal (20), and the second end of the telescopic rod can perform telescopic movement relative to the first end thereof, and is used to provide a position for installing the pull rope connection mechanism (40).

11. The strength training apparatus according to any one of claims 1 to 4, characterized in that: The pull rope connection mechanism (40) is detachably mounted on the adjustment mechanism (30) or the stand (10).

12. The strength training apparatus according to any one of claims 1 to 4, characterized in that: A wire guide mechanism (13) movable relative to the stand (10) is provided at one end of the stand (10) close to the pedal (20).

13. The strength training apparatus according to any one of claims 1 to 4, characterized in that: The pedal (20) is provided with the adjustment mechanism (30) on both opposite sides along the width direction thereof.

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