Upper limb strength training device

Abstract

The utility model relates to an upper limb strength training device which comprises a bottom frame assembly, two power arms and a handle rod, the bottom frame assembly is arranged on a bearing plane, the two power arms are oppositely arranged on the bottom frame assembly in a spaced and rotating mode, the handle rod is arranged on the two power arms, and the handle rod is arranged to be a curved rod. A user pulls the handle rod to drive the power arm to rotate relative to the bottom frame assembly to do work so as to conduct upper limb strength training. The curved bar comprises two connecting sections arranged in a mirror image mode and bending structures, one ends of the two connecting sections are connected with the two power arms respectively, the other ends of the two connecting sections extend oppositely to be connected with the two bending structures respectively, the ends, away from the connecting sections, of the two bending structures are connected with each other, and the bending structures are used for providing at least two grabbing positions for a user; at least two grabbing positions are provided for a user through the bending structure, the user can conveniently grab the correct positions, the bending structure prevents the resistance direction on the handle rod from being parallel to the axis of the arm of the user, and therefore the grabbing experience of the user is enhanced.

Description

Technical Field

[0001] This application belongs to the field of fitness equipment technology, and in particular relates to an upper limb strength training device. Background Technology

[0002] In recent years, with the popularization of fitness awareness, the number of people exercising has continued to rise, which in turn has led to a continuous increase in the demand for fitness equipment.

[0003] Existing biceps or triceps training devices typically include a base frame, a swing frame, and handles. The swing frame is rotatably mounted on the base frame, and the handles are fixed to the swing frame. Users grip the handles to rotate the swing frame relative to the base frame for biceps or triceps training.

[0004] However, the handles in the above-mentioned technical solutions are usually straight bars. When the resistance on the handle is parallel to the axis of the user's arm, it is easy to pull the user's palm and cause the wrist to rotate excessively inward, resulting in an uncomfortable gripping experience. Furthermore, due to the improper gripping position, other muscles are easily used to assist the user, resulting in poor training effect. Utility Model Content

[0005] To address the shortcomings of related technologies, this application provides an upper limb strength training device that offers users at least two grip positions through a bending structure. This allows users to grip the correct positions for training, and the bending structure prevents the resistance direction on the handle from being parallel to the user's arm axis, thereby enhancing the user's grip experience and achieving better training results.

[0006] This application provides an upper limb strength training device, comprising:

[0007] A base frame assembly, wherein the base frame assembly is disposed on a bearing plane;

[0008] The two power arms are relatively spaced apart and rotatably mounted on the base frame assembly;

[0009] A handle bar is provided on the second power arm. The handle bar is configured as a curved bar. The user pulls the handle bar to drive the power arm to rotate relative to the base frame assembly to perform work, thereby conducting upper limb strength training.

[0010] The crank includes two mirror-arranged connecting sections and a bending structure. One end of each connecting section is connected to one of the two power arms, and the other end extends toward each other to connect to the two bending structures. The ends of the two bending structures away from the connecting sections are connected to each other. The bending structure is used to provide the user with at least two grip positions.

[0011] In some embodiments, the second bending structure is mirror-imaged, wherein the first bending structure includes:

[0012] The connecting segment extends from one of the power arms toward the other power arm, bends in a first direction to form a first gripping segment, and then bends in a second direction to form a second gripping segment. The first gripping segment and the second gripping segment constitute a first bending portion. The first gripping segment is used to provide a first gripping position for the user, and the second gripping segment is used to provide a second gripping position for the user.

[0013] In some embodiments, the second bending structure is mirror-imaged, wherein the first bending structure further includes:

[0014] The second gripping segment extends in a third direction to form a third gripping segment; the two third gripping segments are connected by a transition segment, and the transition segment and the third gripping segment form a second bend, and the two third gripping segments provide a third gripping position for the user; the first gripping position, the second gripping position and the third gripping position respectively provide the user with a wide-distance, medium-distance and narrow-distance gripping position.

[0015] In some embodiments, the transition segment and the connecting segment are coaxially arranged, and the first direction intersects the second direction, and the third direction intersects the second direction.

[0016] In some embodiments, the bending direction of the first bend is opposite to that of the bending direction of the second bend on the same plane.

[0017] In some embodiments, the upper limb strength training device further includes:

[0018] A connector is provided between the power arm and the handle bar, and both ends of the connector are rotatably connected to the power arm and the handle bar, respectively.

[0019] In some embodiments, the upper limb strength training device further includes:

[0020] A transmission assembly is connected to the power arm and the resistance source respectively. The transmission assembly is used to drive the resistance source to do work when the power arm rotates relative to the base frame assembly.

[0021] In some embodiments, the transmission assembly of the upper limb strength trainer includes:

[0022] The swing frame has one end rotatably mounted on the base frame assembly, and the other end connected to the resistance source;

[0023] Synchronous pulley, which is coaxially rotatably mounted on the base frame assembly with the power arm;

[0024] A transmission belt, one end of which is wound around the synchronous pulley, and the other end of which is rotatably connected to the swing frame;

[0025] The synchronous pulley and the power arm rotate synchronously relative to the base frame assembly, so that the synchronous pulley wraps around or unwraps the transmission belt, thereby driving the swing frame to swing back and forth.

[0026] In some embodiments, the upper limb strength training device further includes:

[0027] Elbow pad, the elbow pad being disposed on the base frame assembly;

[0028] A first adjustment component is disposed between the elbow pad and the base frame assembly, and the first adjustment component is used to adjust the setting angle of the elbow pad relative to the base frame assembly.

[0029] In some embodiments, the upper limb strength training device further includes:

[0030] A seat cushion, which is slidably disposed on the base frame assembly and slides away from or towards the bearing plane;

[0031] A second adjustment component is used to adjust the distance between the seat cushion and the bearing surface.

[0032] In summary, this application provides an upper limb strength training device that provides users with at least two grip positions through a bending structure, facilitating correct gripping for training. The bending structure also prevents the resistance direction on the handle from being parallel to the user's arm axis, thereby enhancing the user's gripping experience and achieving better training results. By providing a first, second, and third grip section, respectively offering a first, second, and third grip position, it facilitates wide, medium, and narrow gripping positions. Furthermore, by coaxially aligning the transition section and connecting section and restricting the relative relationships of the first, second, and third directions, the bending angles of the three grip positions on the handle are optimized. Different shapes stimulate different muscle groups; by making the openings formed by the first and second bends face opposite directions, a symmetrical bending structure is created, making the device more stable when gripped, and ensuring the user's wrist maintains a natural angle throughout training, reducing wrist joint pressure and fatigue; by setting up connecting parts, the resistance arm is adaptively adjusted according to the user's arm length during training, reducing user grip discomfort; the cooperation of the synchronous pulley and the transmission belt allows for more freedom in the relative positioning of the swing frame and the power arm; the first adjustment component adjusts the setting angle of the elbow pad relative to the base frame component to adapt to different user training postures; the second adjustment component adjusts the distance between the seat cushion and the bearing plane to adapt to different user sitting postures.

[0033] Other features and advantages of this application will be set forth in the description which follows, and in part will be obvious from the description or may be learned by practicing the invention. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0034] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0035] Figure 1 This is a perspective view of the upper limb strength training device of this application;

[0036] Figure 2 This is a front view of the upper limb strength training device of this application;

[0037] Figure 3 This is a side view of the upper limb strength training device of this application.

[0038] In the picture:

[0039] 100. Base frame assembly; 200. Bending structure; 201. First bending section; 202. Second bending section; 300. Power arm; 400. Handle bar; 401. Connecting section; 402. First gripping section; 403. Second gripping section; 404. Third gripping section; 405. Transition section; 500. Connector; 600. Transmission assembly; 601. Swing frame; 602. Transmission belt; 700. Elbow pad; 800. Seat cushion; 900. Second adjustment assembly; 901. Sliding sleeve; 902. Sliding rod. Detailed Implementation

[0040] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0041] In the description of this application, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0042] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific Implementation

[0045] Reference Appendix Figure 1 To be continued Figure 3 , Figure 1 This is a perspective view of the upper limb strength training device of this application; Figure 2 This is a front view of the upper limb strength training device of this application; Figure 3 This is a side view of the upper limb strength training device of this application; the following is in conjunction with the attached... Figure 1 To be continued Figure 3 Specific embodiments are described below.

[0046] Reference Appendix Figure 1 To be continued Figure 3 This application provides an upper limb strength training device, including a base frame assembly 100, two power arms 300, and a handle bar 400. The base frame assembly 100 is disposed on a bearing plane, and the two power arms 300 are rotatably disposed on the base frame assembly 100 with relative spacing. The handle bar 400 is disposed on the two power arms 300 and is configured as a curved bar. The user pulls the handle bar 400 to drive the power arms 300 to rotate relative to the base frame assembly 100 to perform work, thereby conducting upper limb strength training.

[0047] Reference Appendix Figure 1 With appendix Figure 2 The crank includes two mirror-image connecting sections 401 and a bending structure 200. One end of the two connecting sections 401 is connected to two power arms 300 respectively, and the other end extends towards each other to connect to two bending structures 200 respectively. The ends of the two bending structures 200 away from the connecting sections 401 are connected to each other. The bending structure 200 is used to provide at least two grip positions for the user.

[0048] Specifically, based on the mirror-image configuration of the two connecting segments 401 and the mirror-image configuration of the two bending structures 200, the axes of the two connecting segments 401 coincide, one end of the two connecting segments 401 is used to connect to the two power arms 300 respectively, and the other end extends towards each other to connect to the mirror-image configuration of the two bending structures 200 respectively, and the ends of the two bending structures 200 away from the connecting segments 401 are connected to each other.

[0049] The axis of the bending structure 200 is inclined to the axis of the connecting section 401, meaning that the axes of the two do not coincide. The bending structure 200 is used to provide the user with at least two grip positions. When the user pulls the handle 400 to rotate the power arm 300 relative to the base frame assembly 100, and the direction of resistance on the handle 400 is perpendicular to the axis of the connecting section 401, the axis of the bending structure 200 is inclined to the axis of the connecting section 401. This avoids the direction of resistance on the handle 400 being parallel to the user's arm axis, thereby enhancing the user's grip experience and achieving better training results.

[0050] Reference Appendix Figure 2 In some embodiments, the two bending structures 200 are mirror images of each other. One bending structure 200 includes a connecting segment 401 extending from one power arm 300 toward the other power arm 300, bending in a first direction to form a first gripping segment 402, and then bending in a second direction to form a second gripping segment 403. The first gripping segment 402 and the second gripping segment 403 form a V-shaped first bending portion 201. The first gripping segment 402 is used to provide a first gripping position for the user, and the second gripping segment 403 is used to provide a second gripping position for the user.

[0051] Specifically, the two grip positions on the bending structure 200 are provided by the first bending part 201. The first bending part 201 includes two first grip sections 402 to provide the user with a first grip position and two second grip sections 403 to provide the user with a second grip position.

[0052] It should be noted that the first bending part 201 is composed of a first gripping section 402 and a second gripping section 403. The first bending part 201 is V-shaped. The ends of the first gripping section 402 and the second gripping section 403 that are far apart from each other are provided with a first preset interval. Based on the different sizes of the first preset interval, the inclination of the first gripping section 402 and the second gripping section 403 relative to the connecting section 401 is different, and the angle between the resistance direction on the handle 400 and the axis of the user's arm is different. The first preset interval should be set according to the actual situation.

[0053] A second preset interval is provided between the two first bends 201 in the mirror setting. Based on the different sizes of the second preset interval, the user's grip will vary.

[0054] The first gripping section 402 and the second gripping section 403 are configured for wide-grip gripping and narrow-grip gripping;

[0055] The first gripping section 402 and the second gripping section 403 are configured for wide-grip gripping and medium-grip gripping;

[0056] The first gripping section 402 and the second gripping section 403 are configured for medium-distance gripping and narrow-distance gripping;

[0057] Therefore, based on the regulations in the fitness field regarding wide, medium, and narrow spacing, the second preset interval should be set according to the actual situation.

[0058] Reference Appendix Figure 2 In some embodiments, the two bending structures 200 are mirror images of each other, wherein one bending structure 200 includes a second gripping segment 403 extending in a third direction to form a third gripping segment 404; the two and third gripping segments 404 are connected by a transition segment 405, the transition segment 405 and the third gripping segment 404 forming a U-shaped second bending portion 202, and the second and third gripping segments 404 provide a third gripping position for the user; the first gripping position, the second gripping position and the third gripping position respectively provide the user with a wide-spaced, medium-spaced and narrow-spaced gripping position.

[0059] Specifically, the three gripping positions on the bending structure 200 are provided by the first bending part 201 and the second bending part 202. The second bending part 202 includes a transition section 405 and a third gripping section 404, wherein the third gripping section 404 is used for the user to grip.

[0060] Since the axis of the transition section is parallel or coincident with the axis of the connecting section 401, the process of extending from the third gripping section 404 to the transition section tends to be gentle, and the second bending part 202 is U-shaped.

[0061] Based on the different distribution positions of the first, second, and third grip positions on the crank bar, users are provided with wide, medium, and narrow grip positions, respectively, thus providing users with a wider range of grip postures and achieving a more efficient training experience.

[0062] Reference Appendix Figure 1 To be continued Figure 3 Specifically, the base frame assembly 100 includes a base frame, two support frames, a connecting frame, and two auxiliary frames. The base frame is laid on a bearing plane. One end of each of the two support frames is fixed to the base frame, and the other end of each support frame is rotatably connected to two power arms 300. The connecting frame is fixed to the base frame and located between the two support frames. The connecting frame is used to connect the swing frame 601. The two auxiliary frames are respectively located between the two support frames and the base frame to assist the support frames in providing support.

[0063] One end of the swing frame 601 is rotatably mounted on the connecting frame, and the other end of the swing frame 601 is used to load a counterweight to adjust the swing resistance of the swing frame 601. The position between the two ends of the swing frame 601 is connected to the second power arm 300.

[0064] The handlebar 400 is made of lightweight aluminum, which is high-strength and corrosion-resistant. The handlebar 400 provides three grip options: wide, medium, and narrow, to meet the training needs of users who want to stimulate different muscle groups.

[0065] Based on the settings of the first grip segment 402, the second grip segment 403, and the third grip segment 404, three grip methods are provided for users: wide grip, medium grip, and narrow grip. Users can choose the wide grip, medium grip, or narrow grip position according to their own training needs, thereby specifically training different parts of the biceps. The diverse grip methods can more comprehensively train the biceps and improve the training effect.

[0066] Compared to the single grip method of a straight bar, which may lead to unnatural wrist and arm postures, when the resistance direction on the bar 400 is parallel to the user's arm axis, it is easy to pull the user's palm down along the arm axis, causing excessive internal rotation of the wrist. This unnatural posture increases the pressure on the wrist joint, and fatigue or injury is likely to occur during long-term training. Based on the first bending part 201 and the second bending part 202, this application enables the first gripping section 402, the second gripping section 403, and the third gripping section 404 of the bar 400 to form a certain angle with the arm axis, thereby preventing the user's palm from drooping. Furthermore, by adjusting the wrist angle, the force can be transmitted more directly to the biceps, improving training efficiency.

[0067] Reference Appendix Figure 2 In some embodiments, the transition segment 405 is coaxially arranged with the connecting segment 401, and the first direction intersects the second direction, and the third direction intersects the second direction.

[0068] Specifically, the coaxial setting of the transition section 405 and the connecting section 401 means that the center line of the transition section 405 coincides with the center line of the connecting section 401, so as to ensure that when the user makes a narrow grip, the transition section 405 can smoothly connect the two third grip sections 404, avoiding stress concentration or instability caused by different axis settings.

[0069] By setting the first direction to intersect with the second direction, the bending angle between the first gripping segment 402 and the second gripping segment 403 is not zero, thereby enabling users to naturally adjust their hand posture when performing wide-grip and medium-grip gripping, reducing wrist and arm fatigue.

[0070] By setting the second direction to intersect with the third direction, the bending angle between the second gripping segment 403 and the third gripping segment 404 is not zero, thereby enabling the user to better concentrate the force on the biceps when performing a narrow grip and improving the training effect.

[0071] Reference Appendix Figure 2 In some embodiments, the bending direction of the first bending portion 201 is opposite to that of the bending direction of the second bending portion 202 on the same plane, and the opening formed by the first bending portion 201 is opposite to the opening formed by the second bending portion 202.

[0072] Specifically, the first bend 201 is located between the connecting section 401 and the third grip section 404 of the handle 400, with its opening facing away from the user's body, while the second bend 202 is located between the first grip section 402 and the transition section 405, with its opening facing towards the user's body; or, the first bend 201 is located between the connecting section 401 and the third grip section 404 of the handle 400, with its opening facing towards the user's body, while the second bend 202 is located between the first grip section 402 and the transition section 405, with its opening facing away from the user's body.

[0073] Through the synergistic effect of the first bending part 201 and the second bending part 202, the wrist maintains a natural angle throughout the training process, reducing pressure and fatigue on the wrist joint. Furthermore, the symmetrical bending structure 200 on the handle 400 avoids force dispersion and improves training efficiency.

[0074] It should be noted that the first direction, second direction, and third direction should be set based on the actual situation; the two power arms 300 are set as a first arm and a second arm that are relatively spaced apart on the base frame assembly 100. When the connecting section 401 extends from the first arm to the second power arm, the first direction refers to any direction in which the end of the connecting section 401 away from the first arm extends towards the second arm; the second direction refers to any direction in which the end of the first gripping section 402 away from the connecting section 401 extends away from the first arm and towards the second arm; the third direction refers to any direction in which the end of the second gripping section 403 away from the first gripping section 402 extends away from the first arm and towards the second arm.

[0075] When the connecting segment 401 extends from the second arm to the first lever arm, the situation is the opposite of that described above, and will not be repeated here.

[0076] Reference Appendix Figure 1 To be continued Figure 3 In some embodiments, the upper limb strength trainer is also provided with a connector 500, which is located between the power arm 300 and the handle bar 400. The two ends of the connector 500 are rotatably connected to the power arm 300 and the handle bar 400, respectively.

[0077] Specifically, the connector 500 is an I-shaped connector located between the power arm 300 and the handlebar 400. Its two ends are respectively sleeved on the pivots of the power arm 300 and the handlebar 400 to rotatably connect with them. The connector 500 is used to make the movement between the power arm 300 and the handlebar 400 smoother, reduce friction and jamming during the movement, and improve the user experience.

[0078] Furthermore, the connector 500 increases the relative degree of freedom between the power arm 300 and the handle bar 400. Based on the different arm lengths of users, during training, the connector 500 can adaptively adjust the resistance arm according to the different arm lengths of different users, reducing the grip discomfort caused by the fixed resistance arm.

[0079] In some embodiments, the upper limb strength training device is further provided with a transmission assembly 600, which is connected to the power arm 300 and the resistance source respectively. The transmission assembly 600 is used to synchronously drive the resistance source to rotate relative to the base frame assembly 100 when the power arm 300 rotates relative to the base frame assembly 100. The transmission assembly 600 includes a swing frame 601, one end of which is rotatably mounted on the base frame assembly, and the other end of which is connected to the resistance source. The power arm 300 is connected to the swing frame 601 so that the resistance source can be driven to do work through the swing frame 601.

[0080] Specifically, the transmission method of the transmission component 600 includes, but is not limited to, gear transmission, synchronous belt or chain transmission, linkage transmission, hydraulic transmission, and pneumatic transmission.

[0081] The gear transmission method includes at least one set of gears connecting the power arm 300 and the swing frame 601. The rotation of the power arm 300 is transmitted to the swing frame 601 through the gears to ensure that the two move synchronously.

[0082] The linkage transmission method includes a connection between the power arm 300 and the swing frame 601 via a linkage, and the rotation of the power arm 300 drives the swing frame 601 to rotate synchronously through the mechanical linkage of the linkage.

[0083] The hydraulic or pneumatic transmission method includes connecting the power arm 300 and the swing frame 601 via a hydraulic or pneumatic device, and the rotation of the power arm 300 drives the swing frame 601 to rotate synchronously through hydraulic or pneumatic transmission.

[0084] Reference Appendix Figure 1 With appendix Figure 3In some embodiments, the transmission assembly 600 includes a synchronous pulley and a transmission belt 602. The synchronous pulley and the power arm 300 are coaxially rotatably mounted on the base frame assembly 100. One end of the transmission belt 602 is wound around the synchronous pulley, and the other end is rotatably connected to the swing frame 601. The synchronous pulley and the power arm 300 rotate synchronously relative to the base frame assembly 100, so that the synchronous pulley wraps around or unwraps the transmission belt 602, thereby driving the swing frame 601 to swing back and forth.

[0085] Specifically, the synchronous pulley and the power arm 300 are fixed on the same rotating shaft to ensure that the rotation of the power arm 300 can directly drive the synchronous pulley to rotate synchronously, thereby ensuring the precise synchronous movement of the power arm 300 and the swing frame 601.

[0086] One end of the transmission belt 602 is wound around the synchronous pulley, and the other end is rotatably connected to the swing frame 601 through the connector 500. The transmission belt 602 includes, but is not limited to, synchronous belts, toothed belts or high-strength flexible belts, to ensure the stability and durability of the transmission. In addition, the flexibility of the transmission belt 602 makes the reciprocating swing of the swing frame 601 smoother, reducing the impact and vibration in mechanical motion and improving the comfort of user training.

[0087] When the power arm 300 rotates, the synchronous pulley rotates accordingly, and the transmission belt 602 wraps around or unwraps on the synchronous pulley, thereby driving the swing frame 601 to swing back and forth. The winding and unwinding mechanism of the transmission belt 602 makes the swing of the swing frame 601 perfectly match the rotation of the power arm 300, thus achieving efficient power transmission.

[0088] Optionally, the transmission belt 602 is equipped with a tension adjustment device, which includes, but is not limited to, a tension wheel or a spring. The tension adjustment device is used to adjust the tension of the transmission belt 602 to ensure transmission efficiency and reduce slippage.

[0089] Reference Appendix Figure 1 To be continued Figure 3 In some embodiments, the upper limb strength trainer further includes an elbow pad 700 and a first adjustment component. The elbow pad 700 is disposed on the base frame assembly 100, and the first adjustment component is disposed between the elbow pad 700 and the base frame assembly 100. The first adjustment component is used to adjust the setting angle of the elbow pad 700 relative to the base frame assembly 100.

[0090] Specifically, the elbow pad 700 is positioned at the other end of the connecting frame relative to the base frame. The elbow pad 700 is used to support the user's upper arm to keep the upper arm stable and make it easier for the user to use the biceps to drive the forearm to grip the handle 400 for training.

[0091] The elbow pad 700 is connected to the connecting frame via the first adjustment component. The connection method includes, but is not limited to, bolt fixing, snap-fit ​​connection or slide rail installation, to ensure the stability and adjustability of the elbow pad 700. The first adjustment component is used to support the user to adjust the angle of the elbow pad 700 according to their own height, arm length and training habits, to ensure the correctness and effectiveness of the training posture.

[0092] In some embodiments, the elbow pad 700 is rotatably mounted on the base assembly 100. The first adjustment assembly includes a turntable and a pin. The turntable is fixed on the base assembly 100. The turntable and the elbow pad 700 are provided with a plurality of locking points. The pin is used to extend into or disengage from the locking points on the turntable and the elbow pad 700, thereby locking or releasing the relative rotation between the elbow pad 700 and the base assembly.

[0093] Specifically, the connecting frame is equipped with a rotating shaft. The rotating shaft structure is made of high-strength materials such as stainless steel or aluminum alloy to ensure the stability and durability of rotation. The elbow pad 700 is connected to the connecting frame through the rotating shaft, so that the elbow pad 700 can rotate and be adjusted around the rotating shaft.

[0094] The turntable is fixed on the connecting frame and is coaxial with the rotation axis of the elbow pad 700. The turntable has multiple evenly distributed locking points to achieve fine adjustment of the elbow pad 700 angle. The turntable is made of high-strength wear-resistant material to ensure that it can maintain its accuracy after long-term use.

[0095] The pin is used to insert or release the locking point on the turntable and elbow pad 700. The user inserts or releases the pin by pulling or pressing it.

[0096] The design of the locking pin and the locking point ensures the stability of the elbow pad 700 in the locked state, preventing accidental movement of the elbow pad 700 during training. This allows the elbow pad 700 to be adjusted at different angles to adapt to different training goals, making it convenient for users to switch between high-intensity training, low-intensity training, and rehabilitation training.

[0097] Optionally, the end of the pin may be designed to be tapered or spherical for quick alignment and insertion of the locking point.

[0098] Reference Appendix Figure 3 In some embodiments, the upper limb strength trainer also includes a seat 800 and a second adjustment component 900. The seat 800 is disposed on the base frame assembly 100, and the second adjustment component 900 is used to adjust the distance between the seat 800 and the bearing plane.

[0099] Specifically, the seat cushion 800 is slidably connected to the connecting frame via a slide rail or guide groove, ensuring that the seat cushion 800 can move smoothly when adjusting its height, and that the seat cushion 800 can slide away from or towards the bearing surface.

[0100] The second adjustment component 900 is located between the base frame assembly 100 and the seat cushion 800 to support the height adjustment of the seat cushion 800 in the direction away from or towards the bearing surface, ensuring that users of different heights can find a suitable sitting position and improve the comfort and effectiveness of training.

[0101] Reference Appendix Figure 3 In some embodiments, the second adjustment component 900 includes a sliding sleeve 901, a sliding rod 902, and a power device. The sliding sleeve 901 is hollow inside and open at one end. The sliding sleeve 901 is disposed on the base frame assembly 100 or the seat cushion 800. One end of the sliding rod 902 is slidably disposed inside the sliding sleeve 901, and the other end is disposed on the seat cushion 800 or the base frame assembly 100 relative to the sliding sleeve 901. The power device is used to control the relative sliding distance between the sliding sleeve 901 and the sliding rod 902 to adjust the distance between the seat cushion 800 and the bearing plane.

[0102] Specifically, the slide sleeve 901 is made of high-strength metal material, hollow inside and open at one end. The slide sleeve 901 is fixed to the base frame assembly 100 or the seat cushion 800 by bolts or welding to ensure its stability. The slide sleeve 901 is provided with guide grooves or ball bearings inside to guide the sliding rod 902 and reduce friction.

[0103] The slide bar 902 is made of the same high-strength metal material as the slide sleeve 901. One end of the slide bar 902 is slidably disposed inside the slide sleeve 901, and the other end is rotatably connected to the seat cushion 800 or the base frame assembly 100 relative to the slide sleeve 901. The surface of the slide bar 902 is hardened to improve wear resistance and service life.

[0104] Optionally, the slide bar 902 is equipped with scale markings to allow users to intuitively understand the adjustable height of the seat cushion 800.

[0105] The power equipment includes, but is not limited to, electric push rods, hydraulic cylinders, or pneumatic devices, used to control the relative sliding distance between the sliding sleeve 901 and the sliding rod 902; wherein, the electric push rod consists of a motor, a screw, and a nut, and the relative sliding between the sliding rod 902 and the sliding sleeve 901 is achieved by the forward and reverse rotation of the motor; the hydraulic cylinder consists of a cylinder body, a piston, and hydraulic oil, and the piston is controlled by a hydraulic pump to drive the sliding rod 902 to slide relative to the sliding sleeve 901; the pneumatic device consists of a cylinder, a piston, and compressed air, and the piston is controlled by an air pump to drive the sliding rod 902 to slide relative to the sliding sleeve 901.

[0106] The power unit is operated by a controller, which includes, but is not limited to, buttons, remote controls, and push rods. Users can adjust the height of the seat cushion 800 simply by using the controller. The precise control of the power unit makes the adjustment of the seat cushion 800 height more accurate. Users can select the appropriate height according to the scale markings on the slider 902 or the display on the controller.

[0107] This application provides an upper limb strength training device. By providing a first gripping section 402, a second gripping section 403, and a third gripping section 404, respectively offering wide, medium, and narrow gripping positions, it facilitates correct gripping for training. Furthermore, the first bending section 201 and the second bending section 202 prevent the resistance direction on the handle 400 from being parallel to the user's arm axis, thereby enhancing the user's gripping experience and achieving better training results. By coaxially arranging the transition section 405 and the connecting section 401, and restricting the relative relationships of the first, second, and third directions, the bending angles of the three gripping positions on the handle 400 are different, corresponding to the stimulation of different muscle groups. The first bending section 201 and the second bending section 404... The openings formed by the bending section 202 face opposite directions, creating a symmetrical bending structure 200, which makes the device more stable when gripped, and the user's wrist maintains a natural angle throughout the training process, reducing wrist joint pressure and fatigue. By setting the connector 500, the resistance arm is adaptively adjusted according to the user's arm length during training, reducing user grip discomfort. The cooperation between the synchronous pulley and the transmission belt 602 allows for more freedom in the relative positioning of the swing frame 601 and the power arm 300. The first adjustment component adjusts the setting angle of the elbow pad 700 relative to the base frame assembly 100 to adapt to different user training postures. The second adjustment component 900 adjusts the distance between the seat cushion 800 and the bearing plane to adapt to different user sitting postures.

[0108] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0109] The above embodiments are only used to illustrate the technical solutions of this application and not to limit them; although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this application or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in this application.

Claims

1. An upper limb strength training device, characterized in that, include: A base frame assembly, wherein the base frame assembly is disposed on a bearing plane; The two power arms are relatively spaced apart and rotatably mounted on the base frame assembly; A handle bar is provided on the second power arm. The handle bar is configured as a curved bar. The user pulls the handle bar to drive the power arm to rotate relative to the base frame assembly to perform work, thereby conducting upper limb strength training. The crank includes two mirror-arranged connecting sections and a bending structure. One end of each connecting section is connected to one of the two power arms, and the other end extends toward each other to connect to the two bending structures. The ends of the two bending structures away from the connecting sections are connected to each other. The bending structure is used to provide the user with at least two grip positions.

2. The upper limb strength training device according to claim 1, characterized in that, The second bending structure is mirrored, wherein the first bending structure includes: The connecting segment extends from one of the power arms toward the other power arm, bends in a first direction to form a first gripping segment, and then bends in a second direction to form a second gripping segment. The first gripping segment and the second gripping segment constitute a first bending portion. The first gripping segment is used to provide a first gripping position for the user, and the second gripping segment is used to provide a second gripping position for the user.

3. The upper limb strength training device according to claim 2, characterized in that, The second bending structure is mirrored, and the first bending structure further includes: The second gripping segment extends in a third direction to form a third gripping segment; the two third gripping segments are connected by a transition segment, and the transition segment and the third gripping segment form a second bend, and the two third gripping segments provide a third gripping position for the user; the first gripping position, the second gripping position and the third gripping position respectively provide the user with a wide-distance, medium-distance and narrow-distance gripping position.

4. The upper limb strength training device according to claim 3, characterized in that, The transition section is coaxially arranged with the connecting section, and the first direction intersects the second direction, while the third direction intersects the second direction.

5. The upper limb strength training device according to claim 4, characterized in that, The bending direction of the first bend is opposite to that of the bending direction of the second bend on the same plane.

6. The upper limb strength training device according to any one of claims 1 to 5, characterized in that, Also includes: A connector is provided between the power arm and the handle bar, and both ends of the connector are rotatably connected to the power arm and the handle bar, respectively.

7. The upper limb strength training device according to claim 6, characterized in that, Also includes: A transmission assembly is connected to the power arm and the resistance source respectively. The transmission assembly is used to drive the resistance source to do work when the power arm rotates relative to the base frame assembly.

8. The upper limb strength training device according to claim 7, characterized in that, The transmission assembly includes: The swing frame has one end rotatably mounted on the base frame assembly, and the other end connected to the resistance source; Synchronous pulley, which is coaxially rotatably mounted on the base frame assembly with the power arm; A transmission belt, one end of which is wound around the synchronous pulley, and the other end of which is rotatably connected to the swing frame; The synchronous pulley and the power arm rotate synchronously relative to the base frame assembly, so that the synchronous pulley wraps around or unwraps the transmission belt, thereby driving the swing frame to swing back and forth.

9. The upper limb strength training device according to any one of claims 1 to 5, characterized in that, Also includes: Elbow pad, the elbow pad being disposed on the base frame assembly; A first adjustment component is disposed between the elbow pad and the base frame assembly, and the first adjustment component is used to adjust the setting angle of the elbow pad relative to the base frame assembly.

10. The upper limb strength training device according to any one of claims 1 to 5, characterized in that, Also includes: A seat cushion, which is slidably disposed on the base frame assembly and slides away from or towards the bearing plane; The second adjustment component is used to adjust the distance between the seat cushion and the bearing plane.

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