Training equipment

Abstract

The invention belongs to the technical field of fitness equipment, and particularly relates to training equipment. Training equipment comprises a rack and a training plate, the rack is provided with a damping training assembly and a display screen, the bottom of the rack is provided with a fixing base which extends in the front-back direction and is located below the training plate, the training plate is rotationally connected with the rack, and a locking mechanism is arranged between the training plate and the fixing base; the locking mechanism comprises a main shaft rotationally connected to the fixed seat; the control handle is rotationally arranged at the top end of the main shaft; the pressing block is arranged on the main shaft in a sleeving manner; the two ends of the connecting rod are hinged to the pressing block and the control handle respectively; the pressing block is switched between the pressing position and the unlocking position in a sliding mode along the main shaft. The training plate is provided with a first U-shaped groove with an opening towards the side of the machine frame, and the main shaft penetrates through the first U-shaped groove upwards and can swing to enter the first U-shaped groove or retreat from the first U-shaped groove. The method has the advantage of being convenient for users to use.

Description

Technical Field

[0001] The present invention belongs to the technical field of fitness equipment, and in particular relates to a training device. Background Art

[0002] Training equipment refers to equipment used for physical training or rehabilitation. It typically consists of a vertical frame fixed to the ground, a pulley assembly mounted on the frame, a motor compartment, a display screen for human-computer interaction, and a reversible training board connected to the frame via a hinge. The training board can be unfolded for use or folded and stored to save space as needed. To ensure the board remains stable during training, the equipment typically features a locking mechanism between the board and the frame.

[0003] However, existing training devices still suffer from numerous ergonomic and operational issues in practical use, resulting in a poor user experience. For example, the display screen has a fixed angle and cannot be adjusted based on the user's position or posture, limiting the user's ease of accessing information. The pulley assembly requires cumbersome and complex steps to disassemble, and the locking operation of the training board when unfolded and folded is complex. Taking the locking mechanism as an example, Chinese patent application number 202420942728.5 discloses a training device. The patented locking mechanism is designed to lock the training board in its unfolded state, but its repositioning is particularly inconvenient and dangerous. To return the training board to its horizontal or locked position at a specific angle, the user must simultaneously perform multiple operations: laboriously lifting the training board to maintain a specific position, while precisely adjusting the connecting rod and other locking components for alignment and insertion. This process is not only difficult, time-consuming, and labor-intensive, but more seriously, the operator's fingers are at risk of being pinched by the narrow gaps between the training board, frame, and connecting rod. Both safety and convenience need to be improved.

[0004] In summary, current training equipment has comprehensive inconvenience problems during use. Summary of the Invention

[0005] In order to solve the deficiencies in the prior art, a training device that is user-friendly is provided.

[0006] The present invention is implemented by the following technical solution: a training device includes a frame and a training board arranged in a front-to-back manner, the frame is provided with a damping training component and a display screen, a fixing seat extending in the front-to-back direction and located below the training board is provided at the bottom of the frame, the training board is rotatably connected to the frame and a locking mechanism is provided between the fixing seat and the training board, the locking mechanism comprising:

[0007] a main shaft, which is rotatably connected to a fixed seat of the frame and passes upward through the training plate;

[0008] a control handle, which is rotatably arranged on the top end of the main shaft;

[0009] A pressing block is sleeved on the main shaft and can slide along the main shaft to tighten or loosen the training board, including a low tightening position and a high unlocking position;

[0010] A connecting rod, whose two ends are respectively hinged to the pressing block and the operating handle, and includes a first hinged end hinged to the operating handle and a second hinged end hinged to the pressing block;

[0011] The first hinged end is offset from the rotation axis of the control handle; when the control handle is rotated, the height position of the first hinged end can be changed, driving the connecting rod to move, and then driving the pressing block to slide along the main axis between the clamping position and the unlocking position;

[0012] A first U-shaped groove opening toward the side of the frame is provided at the edge of the training board, and the main shaft passes through the first U-shaped groove upward and can swing into or out of the first U-shaped groove; when the pressure block is in the unlocked position, the main shaft can swing along the first U-shaped groove toward the inner side of the frame, so that the main shaft withdraws from the first U-shaped groove, thereby providing avoidance space for the training board when folding.

[0013] When the training board needs to be folded and stored, the user rotates the control handle to switch the pressure block from the low, clamping position to the high, unlocking position, so that the pressure block switches from the state of clamping the training board to the state of releasing the training board. The entire main shaft is then swung along the first U-shaped groove toward the inside of the frame, so that the main shaft is withdrawn from the first U-shaped groove. At this time, the entire locking mechanism will avoid the training board during rotation and folding, thereby preventing collision and allowing the training board to lean smoothly against the frame.

[0014] When the training board needs to be unfolded, the user can directly unfold the training board in the folded state downward and lay it flat. During the process of flipping from the folding state to the flat state, the entire locking mechanism will still avoid the training board, so that the training board can be laid flat smoothly. Then the swing spindle is reset, the spindle re-enters the first U-shaped groove, and the spindle passes through the first U-shaped groove from bottom to top. At this time, the control handle is rotated to switch the pressure block from the high unlocking position to the low clamping position, thereby switching the pressure block from the loose state to the clamping state.

[0015] Among them, the damping training component can be a training component possessed by any existing training device, which mainly includes a motor compartment that can generate damping force and a pulley assembly connected to the motor compartment through a traction rope.

[0016] This solution simplifies unlocking and folding operations: the user simply turns the control handle (step one) to raise the pressure block to the unlocked position, then simply swings the main shaft inward toward the frame (step two) to remove it from the first U-shaped slot in the training board. The entire process requires only two steps (turn + swing), and there's no need to rotate the locking mechanism itself to disengage it, making operation intuitive and convenient. It's also safer when repositioning and unfolding the training board. There's no need to precisely adjust or align the slots when folding the training board to unfold it flat. The user simply lowers the board, which is very convenient, eliminates the risk of pinching, and provides increased safety. This makes unfolding and folding the training board much more convenient for the user.

[0017] In this solution, the pressure block slides linearly along the axis of the main shaft to achieve vertical position switching (i.e., vertical lifting and lowering). This movement ensures that the pressure block and the training board's contact surface only contact and separate in the vertical direction, completely avoiding the continuous sliding friction caused by rotational friction (such as that caused by cam structures). This significantly reduces wear on the corresponding pressure surfaces of the pressure block and the training board, significantly improving the durability and long-term reliability of the locking mechanism. This reduces subsequent maintenance costs for users and facilitates long-term use.

[0018] Preferably, a pad is detachably fixed on the training board, and the pad is located in the contact area between the training board and the pressing block; the pad is provided with an upwardly open matching groove, and the shape of the matching groove is adapted to the outer shape of the pressing block;

[0019] When the pressing block switches between the pressing position and the unlocking position, the training board is locked or unlocked by pressing or releasing the pad.

[0020] The spacer can disperse the pressing force of the pressure block, thus preventing deformation of the training board after long-term compression. The mating groove can increase the stability between the pressure block and the spacer, and the spacer can be detachably fixed to the training board, so it can be replaced after long-term use, making it convenient for users to use it for a long time.

[0021] Preferably, the fixing seat is provided with a rotation groove extending in the front-to-back direction, and the main shaft passes through the rotation groove and the first U-shaped groove in sequence from bottom to top. When the main shaft exits the first U-shaped groove and leans against the end groove wall of the rotation groove, the locking mechanism reaches the avoidance position and provides avoidance space for the training board when it is folded.

[0022] The rotating groove is a closed groove structure, so the position of the main shaft can be limited when it swings. When the main shaft exits the first U-shaped groove and leans against the end groove wall of the rotating groove, the user can know that the entire locking mechanism is in the avoidance position at this time, and the training board can be folded, which is equivalent to a prompt, making it convenient for the user to judge whether the locking mechanism is in place and save operation time.

[0023] Preferably, a locking shaft extending in a horizontal direction is rotatably connected to the bottom plate of the frame, and the main shaft is rotatably connected to the bottom plate through the locking shaft, and the locking shaft is provided with a through-axis hole; the main shaft is arranged perpendicular to the locking shaft and passes through the axis hole and is fixedly connected to the locking shaft; the bottom end of the main shaft is provided with an external threaded section, and the threaded adjustment member is threadedly engaged with the external threaded section;

[0024] When the threaded adjustment member is rotated, it drives the main shaft to rise and fall in the vertical direction by abutting against the lower surface of the locking shaft, thereby controlling the downward pressure of the pressing block when it is in the pressing position.

[0025] The downward pressure of the pressing block can be adjusted by rotating the threaded adjustment piece.

[0026] Preferably, a plurality of U-shaped avoidance holes are opened on the bottom side wall of the threaded adjustment member along the circumferential direction, and the U-shaped avoidance holes penetrate the bottom end surface of the threaded adjustment member and are evenly spaced around the axis; a radial pin hole is provided on the outer wall of the external thread section, and the pin hole is equipped with an anti-rotation pin;

[0027] When the threaded adjustment member is rotated to a target pressure position, the anti-rotation pin passes through the U-shaped avoidance hole and is inserted into the radial pin hole for fixation, so as to prevent the threaded adjustment member from circumferential rotation.

[0028] The above solution can prevent the threaded adjustment member from loosening after long-term use, thereby ensuring that the pressure value of the pressure block is fixed, making it convenient for users to use it for a long time.

[0029] Preferably, a first spring is sleeved on the main shaft, and two ends of the first spring are respectively in contact with the bottom of the pressing block and the top of the locking shaft, and the first spring applies a force to the pressing block to move the pressing block toward the top of the main shaft;

[0030] When the operating handle is rotated to switch the pressing block from the pressing position to the unlocking position, the first spring assists in pushing the pressing block to move, so that the pressing block quickly approaches and switches to the unlocking position.

[0031] The first spring continuously provides preloaded force, allowing the pressure block to naturally tilt toward the unlocked position. When the user turns the handle to unlock, this force significantly offsets the downward pressure, significantly reducing operational resistance and achieving a smooth "light turn to unlock" experience.

[0032] Preferably, when the pressure block is in the clamping position and the unlocking position, the main shaft is arranged vertically; when the pressure block is in the clamping position, the rotation axis of the control handle, the first hinge end and the second hinge end are located on the same straight line perpendicular to the horizontal plane; the rotation axis is located at the uppermost end, and the first hinge end is located between the rotation axis and the second hinge end.

[0033] When the pressure block is in the clamping position, the rotation axis, the first hinge end and the second hinge end are in a co-vertical line and the rotation axis is at the highest position, causing the mechanism to enter the over-center dead point state: the vertical elastic force applied by the spring to the pressure block is converted into an axial thrust through the rotation axis through the transmission member. Since the action arm is zero or close to zero, it cannot drive the control handle to rotate; and the upward impact force generated by the vibration of the training board, after being transmitted through the pressure block and the transmission member, also forms an axial force through the rotation axis. Similarly, since the force arm is zero or close to zero, no unlocking torque can be generated; the system maintains static balance in the locked state, and external force cannot trigger unlocking; only when the user applies active torque to the control handle, drives the first hinge end to lift and pass the highest point of the vertical line of the rotation axis, can the mechanism leave the dead point state and complete the unlocking.

[0034] Preferably, a locking hole is provided on the side wall of the training board, and the frame is provided with an elastic latch for inserting into the locking hole and an abutment block abutting against the surface of the training board. When the training board is in the folded state, the elastic latch is inserted into the locking hole and the abutment block abuts against the surface of the training board to maintain the folded state of the training board.

[0035] The side wall of the training board is further provided with a wedge-shaped protrusion, the elastic latch is located on the turning path of the wedge-shaped protrusion, and the wedge-shaped protrusion has a guiding inclined surface. When the elastic latch contacts the guiding inclined surface, the guiding inclined surface presses the elastic latch to cause the elastic latch to contract, so that the elastic latch can be inserted into the locking hole; or

[0036] The end of the elastic latch is wedge-shaped to have a guiding inclined surface. When the training board abuts against the guiding inclined surface of the elastic latch, the elastic latch can be inserted into the locking hole after being contracted.

[0037] By setting a wedge-shaped protrusion or a wedge-shaped end of the elastic pin, the elastic pin can automatically shrink when the training board is folded, so that the elastic pin can be locked into the locking hole, making it convenient for users to lock the training board when it is folded.

[0038] Preferably, a locking mechanism for rotating and locking the display screen is provided between the display screen and the frame, and the locking mechanism comprises:

[0039] Two fixed connecting pieces fixed to the frame at intervals in the horizontal direction;

[0040] A rotating shaft, one end of which is rotatably fixed to a fixed connecting member and a rotating handle is provided at the end thereof, the other end of which has an external thread structure and is threadably engaged with another fixed connecting member, and when the rotating handle is rotated, the lateral spacing between the two fixed connecting members changes;

[0041] A support sleeve is sleeved on the rotating shaft and is transversely arranged between the two fixed connectors. The outer wall of the support sleeve is fixed to the display screen. The support sleeve can rotate circumferentially or move axially on the rotating shaft.

[0042] a first locking portion, which is provided at both axial ends of the supporting sleeve;

[0043] second locking portions, respectively fixedly disposed on the inner sides of the two fixed connectors facing the first locking portions;

[0044] The opposite end surfaces of the first locking portion and the second locking portion have concave and convex structures that can be fitted into each other to produce circumferential constraints;

[0045] When the rotating handle is rotated to increase the distance between the two fixed connecting parts, the first locking part and the second locking part are separated and the circumferential constraint is released, allowing manual adjustment of the circumferential angle of the display screen; when the rotating handle is rotated to reduce the distance between the two fixed connecting parts, the first locking part and the second locking part are engaged with each other and produce a circumferential constraint, thereby locking the display screen at the current angle.

[0046] This solution controls the locking or unlocking between the first locking part and the second locking part by rotating the handle to control the spacing between the two fixed connecting parts. When unlocked, the display screen is in a free state and can rotate freely. When locked, the display screen is in a fixed state and its angle is locked. The concave-convex structure can be an end gear disc, or a protrusion and a groove that is plugged into the protrusion, etc. The display screen of the trainer of this solution can rotate, and the user can adjust the appropriate angle so that the display screen is effectively aligned with the user's line of sight, meeting the user's needs for viewing training instructions and conducting human-computer interaction, and further facilitating the user's use of the entire training equipment.

[0047] The change in the distance between the two fixed connecting members is generated by elastic deformation of the two members themselves.

[0048] Preferably, the first locking portion, the second locking portion, the rotating shaft and the supporting sleeve are coaxially arranged;

[0049] The first locking portion and the second locking portion are both provided with a through hole for the rotating shaft to pass through;

[0050] An axially extending inner sleeve is fixedly provided inside the support sleeve, and the inner sleeve is sleeved outside the rotating shaft;

[0051] The inner wall of the inner sleeve is provided with a circle of extensions extending radially inwards, and the extensions are in contact with the outer wall of the rotating shaft, so that the supporting sleeve is rotatably supported on the rotating shaft;

[0052] The inner cavity of the inner sleeve is connected to the through hole of the first locking portion to form a cavity surrounding the rotating shaft;

[0053] A second spring sleeved on the rotating shaft is provided in the cavity, one end of the second spring abuts against the extending portion, and the other end abuts against the second locking portion.

[0054] This arrangement makes the overall structure more compact, and the elastic member does not interfere with the support member when the support member rotates. Furthermore, the provision of a second spring automatically prevents contact between the first and second locking portions when the distance between the two fixed connecting members increases, thereby maintaining the first and second locking portions in an unlocked and separated state.

[0055] Preferably, the first locking portion is configured as a first end toothed disc, and the second locking portion is configured as a second end toothed disc; the first end toothed disc and the second end toothed disc can engage with each other to provide circumferential locking.

[0056] The end gear disc has a large number of teeth, which can facilitate users to make micro-angle adjustments and precise positioning. After the support part is rotated through multiple smaller angles, the first end gear disc and the second end gear disc can be realigned and reliably engaged, which improves the adjustment accuracy. In addition, multiple meshing teeth can evenly share the circumferential load, thereby improving the stability and load-bearing capacity of the locked state.

[0057] Preferably, the damping training assembly includes a motor compartment that generates damping force and a pulley assembly that is detachably fixed to a frame or a training board, wherein the pulley assembly is provided with a training handle, and the training handle is connected to the motor compartment via a traction rope; the pulley assembly includes:

[0058] A fixing member disposed on the frame and the training board, the fixing member having a T-shaped mounting slot extending along a first direction, and a sidewall of the mounting slot having a lock hole with a lateral opening;

[0059] A movable part detachably assembled with the fixing part, the movable part comprising:

[0060] pulley block;

[0061] a locking portion having a T-shaped matching structure complementary to the shape of the mounting groove and configured to be slidably engaged with the mounting groove along a first direction;

[0062] a driving cavity extending along the first direction and disposed adjacent to the locking portion, wherein a pressing rod and an elastic member are disposed in the driving cavity, and wherein the elastic member applies an elastic force to the pressing rod to move toward the outside of the driving cavity;

[0063] an avoidance groove, which is in communication with the driving cavity and laterally penetrates the locking portion;

[0064] A locking block is rotatably connected to the avoidance groove, one end of the locking block is transmission-connected to the pressing rod, and when the pressing rod is in a natural state, the other end of the locking block extends to the outside of the avoidance groove and cooperates with the lock hole to limit the sliding of the locking part;

[0065] When the pressing rod is pressed, the locking block can be driven to rotate until it is completely retracted into the avoidance groove, thereby releasing the engagement with the lock hole.

[0066] During use, the user can directly press the pressing rod to retract the locking block into the avoidance groove and then insert the locking part into the installation groove, or directly insert the locking part of the movable part into the installation groove. When the locking block is squeezed, it will automatically retract into the avoidance groove. When the locking block passes through the lock hole area, the locking block will automatically pop out and enter the lock hole under the action of the elastic part. At this time, the locking part cannot slide in the installation groove, thereby completing the fixation of the fixed part and the movable part. Therefore, during installation, it is very simple, and only a simple insertion is required to complete the locking of the two. When disassembly is required, the user only needs to press the pressing rod, and then directly pull the movable part upwards, which makes it convenient for the user to disassemble and install the pulley assembly on the rack or training board for different training modes.

[0067] Preferably, the pressing rod is provided with a reduced diameter section, the diameter of the reduced diameter section is smaller than the diameter of the pressing rod body, so that a step surface is generated between the reduced diameter section and the pressing rod body, the reduced diameter section moves in the area where the driving cavity and the avoidance groove are connected, and one end of the locking block that is transmission-connected to the pressing rod abuts against the step surface and is provided with a snap-fit notch for the reduced diameter section to pass through, so as to realize the transmission connection between the locking block and the pressing rod;

[0068] A limiting surface that can abut against the diameter-reducing section is provided on the inner side of the engaging notch. When the pressing rod moves toward the outside of the driving cavity, the limiting surface moves toward the diameter-reducing section and abuts against the diameter-reducing section to limit the extreme position of the outward movement of the pressing rod.

[0069] The engagement notch and the reduced diameter section cooperate to enable the locking block to rotate when the push rod moves axially, allowing the other end of the locking block to extend or retract into the escape groove, thereby locking or unlocking the movable and fixed parts. Furthermore, the engagement notch can adaptively rotate at an angle, eliminating the need for an additional pivot shaft. If the push rod is pulled outward, the locking block rotates accordingly, and the limiting surface moves toward the reduced diameter section. When the push rod is pulled to a certain position, the limiting surface eventually abuts the reduced diameter section, preventing the push rod from being removed.

[0070] Preferably, the fixing member connected to the training board is arranged on the training board in a rigid fixing manner;

[0071] The fixing part connected to the frame is arranged on the frame in a sliding fit manner, and the frame is provided with a gear rod extending in the vertical direction, and the fixing part is provided with a sliding sleeve, and the sliding sleeve is sleeved and slidably fitted on the gear rod, and the gear rod is provided with a plurality of gear holes evenly spaced along the vertical direction, and the wall of the sliding sleeve is provided with an elastic latch lock inserted into the gear hole to achieve high locking of the fixing part and the gear rod, and the latch end of the elastic latch lock is provided with a rolling part or a rotating part for preventing scratches and damage to the gear rod.

[0072] Wherein, rigid fixing can be welding, screw fixing etc. By arranging a rolling piece or a rotating piece at the latch end of the elastic latch lock, it is possible to avoid scraping the gear lever of the frame when the sliding sleeve adjusts the gear along the vertical direction of the frame.

[0073] Preferably, the top end of the movable member is provided with an abutting portion that abuts against the top end of the fixed member; when the locking portion is fully embedded in the mounting groove, the abutting portion abuts against the top end of the fixed member to limit the axial sliding of the movable member;

[0074] The bottom of the locking block is provided with a guiding curved surface or a guiding inclined surface. When the locking portion is inserted into the installation groove, the guiding curved surface or the guiding inclined surface of the locking block contacts the fixing member, so that the locking block can automatically retract into the avoidance groove.

[0075] The abutment between the abutment portion and the top of the fixing member prevents the movable member from further slipping and moving in the insertion direction, causing the locking block to retract into the escape groove after being squeezed against the wall of the lock hole. This method is convenient for the user; as soon as the abutment portion and the top of the fixing member abut, installation is complete. Providing a guide bevel or curved surface at the bottom of the locking block facilitates rotation of the locking block, causing it to automatically retract into the escape groove, making it easier for the user to install the movable member and the fixing member.

[0076] Compared with the prior art, the present invention can comprehensively facilitate user use and improve user satisfaction, which is specifically reflected in the following advantages: 1. This solution is simpler in unlocking and folding operations: the user only needs to turn the control handle (first step) to raise the pressure block to the unlocking position, and then simply swing the main shaft toward the inside of the frame (second step) to make it withdraw from the first U-shaped groove of the training board. The entire process only requires two steps (rotation + swinging), and there is no need to rotate the locking mechanism itself to disengage it, so the operation is intuitive and convenient. It is also safer in the operation of resetting and unfolding the training board. When the training board is folded and unfolded flat, there is no need to accurately adjust or align the slots. The user only needs to directly lower the training board. There is no risk of pinching the hands, which is safer and more convenient for the user to operate.

[0077] 2. The movable parts with pulley sets can be quickly disassembled and assembled with the fixed parts, which is convenient for users to operate and saves installation time.

[0078] 3. The user only needs to turn the rotary handle to control the locking or unlocking between the first locking part and the second locking part, which is very convenient. When unlocked, the display screen is in a free state and can rotate freely. When locked, the display screen is fixed and its angle is locked. The user can adjust the angle to effectively align the display screen with the user's line of sight, meeting the user's needs for viewing training instructions and performing human-computer interaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] Figure 1 This is a schematic diagram of the structure of the training board when it is unfolded, laid flat and compressed;

[0080] Figure 2 It is a structural diagram of the locking mechanism in the tightening position;

[0081] Figure 3 The exploded view of the locking mechanism;

[0082] Figure 4 for Figure 2 sectional view of

[0083] Figure 5 A schematic diagram of the structure of the training board when it is unfolded and unlocked, as well as the locking mechanism;

[0084] Figure 6 It is a schematic diagram of the structure of the locking mechanism after being unlocked and swung to the avoidance position;

[0085] Figure 7 It is a structural diagram of the pad;

[0086] Figure 8 This is a schematic diagram of the structure of the training board in the folded state;

[0087] Figure 9 An enlarged view of the elastic latch and the abutment block when the training board is in a flat state and a folded state;

[0088] Figure 10 is a schematic structural diagram of a training device and a pulley assembly located on the training device;

[0089] Figure 11 for Figure 10 A sectional view at point A;

[0090] Figure 12 for Figure 10 A schematic diagram of the structure of the quick-release pulley assembly at A;

[0091] Figure 13 It is a structural diagram of the movable parts;

[0092] Figure 14 It is a structural diagram of the components inside the moving part;

[0093] Figure 15 for Figure 13 and a cross-sectional view without the locking block, the pressing rod, and the elastic member;

[0094] Figure 16 This is a schematic diagram of the structure after the movable part is fixed to the fixing part of the training board;

[0095] Figure 17 It is a schematic diagram of the structure of the back side of the training device;

[0096] Figure 18 It is a structural diagram of the back side of the display screen;

[0097] Figure 19 An exploded view of the rotation locking mechanism;

[0098] Figure 20 is a cross-sectional view of the rotation locking mechanism;

[0099] Reference numerals: 1, training board; 11, rotating arm; 111, positioning hole; 112, wedge-shaped protrusion; 12, spacer; 121, matching groove; 122, second U-shaped groove; 13, screw; 14, first U-shaped groove;

[0100] 2. Frame; 21. Bottom plate; 22. Shift lever; 23. Fixed seat; 24. Rotation slot; 25. Elastic latch; 26. Abutment block; 27. Traction rope;

[0101] 3. Control handle; 31. Rotation axis; 32. Block; 33. Handle; 34. Arc-shaped notch;

[0102] 4. Connecting rod; 41. First hinge end; 42. Second hinge end;

[0103] 5. Spindle; 51. Spring; 52. Anti-rotation pin; 53. Threaded adjustment piece; 531. U-shaped avoidance hole; 54. Flat position; 55. External thread section; 56. Pressure block;

[0104] 6. Locking shaft; 61. Top screw; 62. Shaft hole;

[0105] 7. Motor compartment;

[0106] 8. Pulley assembly; 81. Fixing member; 811. Locking hole; 8111. Wide section; 8112. Narrow section; 812. Mounting slot; 8113. Screw; 82. Movable member; 83. Sliding sleeve; 831. Sleeve hole; 84. Locking block; 841. Guide curved surface or guide inclined surface; 842. Protruding shaft; 843. Engaging notch; 844. Limiting surface; 845. Avoidance groove; 85. Pressing rod; 851. Elastic member; 852. Reduced diameter section; 853. Step surface; 86. Frame; 861. Pulley; 87. Abutment portion; 88. Locking portion; 881. Thick section; 882. Thin section; 89. Driving cavity;

[0107] 9. Display screen; 91. Fixed connector; 911. Sheet connector; 92. Connecting tube; 93. Support sleeve; 94. Nut; 95. Rotating shaft; 951. Rotating handle; 952. External thread structure; 961. First end gear disc; 962. Second end gear disc; 97. Second spring; 98. Inner sleeve; 981. Extension; 99. Rotating shaft fixing seat;

[0108] 10. Elastic latch lock; 101. Rotating part; 102. Training handle. DETAILED DESCRIPTION

[0109] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0110] like Figure 1 As shown, this embodiment discloses a training device, which includes a frame 2 and a training board 1 arranged in front and back. The training board 1 is provided with two rotating arms 11 extending toward the side of the frame 2, and the two rotating arms 11 are respectively located on the left and right sides of the rear end of the training board 1; the rotating arms 11 are rotatably connected to the bottom plate 21 of the frame 2.

[0111] The frame 2 is provided with a display screen 9, a pulley assembly 8 and a motor compartment 7, and the motor compartment 7 and the pulley assembly 8 are connected by a traction rope 27. The frame 2 includes a vertically extending gear lever 22, and the gear lever 22 is provided with a plurality of gear holes arranged vertically at intervals. The pulley assembly 8 is slidably mounted on the gear lever 22 and plugged into the gear holes through an elastic latch lock 10, so that the pulley assembly 8 can be adjusted in height on the frame 2. The pulley assembly 8 has a training handle 102, and the traction rope 27 is connected to the training handle 102, so that the motor compartment 7 provides a damping force to the training handle 102. The display screen 9 can be used for human-computer interaction, and the user can adjust the damping force of the motor compartment 7 by touching the display screen 9. Among them, the motor compartment 7 is a component possessed by any existing training device.

[0112] like Figures 1 to 8As shown, two fixing seats 23 extending toward the training board 1 are provided at the front end of the base plate 21. The fixing seats 23 are located below the training board 1, and a locking mechanism is provided between the fixing seats 23 and the training board 1. The locking mechanism includes a main shaft 5, a control handle 3, a pressure block 56, and a transmission member. The lower end of the main shaft 5 is fixedly connected to the locking shaft 6. The locking shaft 6 extends horizontally and is cylindrical and rotatably connected to the fixing seats 23. The locking shaft 6 is provided with an axial hole 62 for the main shaft 5 to pass through. The axial hole 62 is arranged in a radial direction through the locking shaft 6, and the main shaft 5 passes through the locking shaft 6. The locking shaft 6 has a set screw hole at each axial end connected to the axial hole 62. The set screw 61 is inserted into the set screw hole to support the side wall of the main shaft 5. The side wall of the main shaft 5 is provided with a flat sidewall 54. The set screw 61 supports the flat sidewall 54, thereby fixing the main shaft 5 and preventing the main shaft 5 from rotating.

[0113] The control handle 3 is rotatably disposed on the top end of the main shaft 5. The control handle 3 includes a block portion 32 and a handle portion 33.

[0114] The pressing block 56 is a columnar structure extending in the horizontal direction. The pressing block 56 is sleeved on the main shaft 5. The pressing block 56 can slide along the axial direction of the main shaft 5 on the main shaft 5. The pressing block 56 is located above the training board 1 and below the control handle 3 to tighten or loosen the training board 1. The pressing block 56 includes a tightening position at a low position and an unlocking position at a high position.

[0115] The transmission member is arranged between the pressure block 56 and the control handle 3. The transmission member is a connecting rod 4. The connecting rod 4 is in the shape of an "8". The two ends of the connecting rod 4 are respectively hinged to the pressure block 56 and the control handle 3. It includes a first hinged end 41 hinged to the control handle 3 and a second hinged end 42 hinged to the pressure block 56.

[0116] like Figures 2 to 8 As shown, the block portion 32 of the control handle 3 is rotatably connected to the top of the main shaft 5 via an existing rotating shaft, and the rotating shaft is the rotation axis 31 of the control handle 3. The first hinge end 41 deviates from the rotation axis 31 of the control handle 3; when the control handle 3 rotates, the height position of the first hinge end 41 can be changed, driving the connecting rod 4 to move, and then driving the pressure block 56 to slide along the main shaft between the clamping position and the unlocking position. The block portion 32 is provided with an arc-shaped notch 34. When the control handle 3 is rotated so that the pressure block 56 is in the low clamping position, the arc-shaped notch 34 abuts and fits with the upper surface of the pressure block 56.

[0117] When the pressure block 56 is in both the clamping and unlocking positions, the main shaft 5 is positioned vertically. When the control handle 3 is rotated, the height of the rotation axis 31 does not change, but the first hinge end 41 performs a circular motion around the rotation axis 31, causing the height of the first hinge end 41 to change, thereby driving the connecting rod 4 to move, and thus the height of the pressure block 56 to change. When the pressure block 56 is in the clamping position, the rotation axis 31, the first hinge end 41, and the second hinge end 42 of the control handle 3 are located on the same straight line perpendicular to the horizontal plane; the rotation axis 31 is at the top, and the first hinge end 41 is located between the rotation axis 31 and the second hinge end 42.

[0118] like Figures 1 to 9 As shown, a pad 12 is fixedly attached to the training board 1 via screws 13. The pad 12 is located in the contact area between the training board 1 and the pressure block 56. The pad 12 has an upwardly open mating groove 121. The mating groove 121 is an arc-shaped groove whose shape and contour match the outer shape of the pressure block 56. When the pressure block 56 switches between the tightening position and the unlocking position, the training board 1 is locked or unlocked by tightening or loosening the pad 12.

[0119] The base plate 21's mounting base 23 is provided with a rotation slot 24 extending in the front-to-back direction (the direction connecting the base plate 21 and the horizontal training board 1). A first U-shaped slot 14 is provided at the edge of the training board 1, aligned with the rotation slot 24. The first U-shaped slot is U-shaped, and a second U-shaped slot 122 is provided on the pad 12. The second U-shaped slot 122 is longitudinally aligned with and extends through the first U-shaped slot 14 at the edge of the training board 1. The spindle 5 extends through the rotation slot 24, the first U-shaped slot 14, and the second U-shaped slot 122, sequentially from bottom to top. When the pressure block 56 is in the unlocked position, the spindle 5 can swing along the rotation slot 24 toward the inside of the frame 2, exiting the first U-shaped slot 14 and resting against the end wall of the rotation slot 24, thereby providing clearance for the training board 1 when folded.

[0120] A spring 51 is mounted on the spindle 5. Its upper end abuts the bottom of the pressure block 56, while its lower end abuts the top of the locking shaft 6. The spring 51 exerts a force on the pressure block 56, tending to move it toward the top of the spindle 5. When the control handle 3 is rotated to switch the pressure block 56 from the clamping position to the unlocking position, the spring 51 assists in pushing the pressure block 56, allowing it to quickly approach and switch to the unlocking position.

[0121] The bottom end of the main shaft 5 is provided with an externally threaded section 55. The threaded adjustment member 53 is a conventional nut, and the threaded adjustment member 53 is threadedly engaged with the externally threaded section 55. When the threaded adjustment member 53 is rotated, it abuts the lower surface of the locking shaft 6, driving the main shaft 5 to rise and fall in the vertical direction, thereby controlling the downward force of the pressure block 56 when it is in the clamping position.

[0122] A plurality of U-shaped avoidance holes 531 are circumferentially provided on the bottom side wall of the threaded adjusting member 53. The U-shaped avoidance holes 531 penetrate the bottom end surface of the threaded adjusting member 53 and are evenly spaced around the axis. A radial pin hole (not shown) is provided on the outer wall of the external threaded section 55. The pin hole is equipped with an anti-rotation pin 52. When the threaded adjusting member 53 is rotated to the target pressure position, the anti-rotation pin 52 passes through the U-shaped avoidance hole 531 and is inserted into the radial pin hole for fixation, thereby preventing the threaded adjusting member 53 from circumferential rotation.

[0123] like Figure 9 As shown, a locking hole 111 is provided on the side wall of the rotating arm 11 of the training board 1. The frame 2 is provided with an elastic latch 25 for inserting into the locking hole 111 and an abutment block 26 for abutting against the surface of the rotating arm 11 of the training board 1. The abutment block 26 can be a bolt head. When the training board 1 is in the folded state, the elastic latch 25 is inserted into the locking hole 111 and the abutment block 26 abuts against the surface of the rotating arm 11 of the training board 1, thereby maintaining the folded state of the training board 1.

[0124] A wedge-shaped protrusion 112 is further provided on the side wall of the rotating arm 11. The elastic latch 25 is located on the flipping path of the wedge-shaped protrusion 112, and the wedge-shaped protrusion 112 has a guiding inclined surface. When the elastic latch 25 contacts the guiding inclined surface, the guiding inclined surface presses the elastic latch 25 so that the elastic latch 25 contracts. After the elastic latch 25 moves to align with the positioning hole, the elastic latch 25 pops out again and is inserted into the positioning hole 111.

[0125] In other embodiments, the end of the elastic latch 25 may be wedge-shaped (see the shape of the wedge-shaped protrusion 112 ), so that the end of the elastic latch 25 has a guiding slope. When the rotating arm 11 of the training board 1 abuts the guiding slope of the elastic latch 25, the elastic latch 25 will retract. After the elastic latch 25 moves to align with the locking hole 111, the elastic latch 25 will re-eject and insert into the locking hole 111. (Not shown in the figure)

[0126] Directions:

[0127] When the training board 1 needs to be folded and stored, the user rotates the control handle 3 to switch the pressure block 56 from the low, clamping position to the high, unlocking position, causing the pressure block 56 to switch from the state of compressing the training board 1 to the state of releasing the training board 1. The entire spindle 5 is then swung so that the spindle 5 swings along the rotation groove toward the inside of the frame 2, allowing the spindle 5 to withdraw from the first U-shaped groove 14 and the second U-shaped groove 122. The spindle 5 rests on the end groove wall of the rotation groove 24. At this time, the entire locking mechanism will avoid the training board 1 during rotation and folding, thereby preventing collision and allowing the training board 1 to smoothly lean against the frame. When leaning, the elastic latch 25 will automatically retract under the action of the wedge-shaped protrusion 112 and then be inserted into the locking hole 111, thereby completing the folding and storage of the training board 1.

[0128] When the training board needs to be unfolded, the user can pull the elastic latch 25 to make the elastic latch 25 exit the locking hole 111. Then the training board 1 in the folded state is directly unfolded downward and laid flat. During the process of flipping from the folded state to the flat state, the entire locking mechanism will still avoid the training board 1, so that the training board 1 can be laid flat smoothly. Then the swing spindle 5 is reset and the spindle re-enters the first U-shaped groove 14 and the second U-shaped groove 122. The spindle 5 passes through the rotating groove 24, the first U-shaped groove 14 and the second U-shaped groove 122 from bottom to top. At this time, the control handle 3 is rotated downward to switch the pressure block 56 from the high unlocking position to the low pressing position, thereby switching the pressure block from the released state to the pressed state.

[0129] Figures 10 to 16 As shown, the pulley assembly 8 includes a fixing member 81. The fixing member 81 of the quick-release pulley assembly is respectively fixed on the frame gear lever 22 and the training board 1 and can be detachably fixed to the movable member 82.

[0130] The fixing member 81 is threadedly engaged with the training board 1 via screws 8113 to achieve rigid fixation. The fixing member 81 is provided with a sliding sleeve 83, which has a vertically extending sleeve hole 831. The sliding sleeve 83 is used to be mounted on the gear lever 22 of the training device and to slide with the gear lever 22. The wall of the sliding sleeve 83 is provided with an elastic latch lock 10 that achieves a high-level locking between the fixing member 81 and the gear lever 22. The latch end of the elastic latch lock 10 is provided with a rotating member 101, which is a pulley that rotates to prevent the gear lever 22 from being scratched. The rotating member 101 can also be replaced with a rolling member (not shown in the figure). For example, the rolling member can be a ball, and a ball groove is provided at the latch end of the elastic latch lock 10, with the ball disposed in the groove.

[0131] Fixing member 81 is provided with a mounting slot 812 extending in the vertical direction (first direction). Both the upper and lower ends of mounting slot 812 extend through fixing member 81. Laterally opening locking holes 811 are defined in the sidewalls of mounting slot 812. Mounting slot 812 is a T-shaped slot, comprising, from the inside out, a wide section 8111 and a narrow section 8112 that are interconnected. The wide section 8111 is wider than the narrow section 8112, forming a T-shaped structure.

[0132] The movable member 82 includes a pulley assembly and a locking portion 88. The pulley assembly comprises a frame 86 rotatably connected to the movable member 82, within which are mounted two rotatable pulleys 861. The locking portion 88 has a complementary shape to the mounting slot 812, meaning that the locking portion 88 also has a T-shaped structure. The locking portion 88 comprises a thick section 881 that mates with the wide section 8111, and a thin section 882 that mates with the narrow section 8112. When the mounting slot 812 and the locking portion 88 engage, they provide circumferential restraint for the fixed member 81 and the movable member 82.

[0133] The movable member 82 is further provided with a drive cavity 89 extending in the vertical direction (first direction) and disposed adjacent to the locking portion 88. The middle region of the drive cavity 89 is connected to the avoidance groove 845, so that the avoidance groove 845 divides the drive cavity 89 into upper and lower portions. A pressing rod 85 and an elastic member 851 are disposed within the drive cavity 89. The bottom end of the pressing rod 85 is always located within the drive cavity 89 below and has a clearance fit with the lower drive cavity 89. The elastic member 851 is located below the pressing rod 85. The elastic member 851 is a compression spring and is coaxial with the pressing rod 85. The upper end of the elastic member 851 abuts the bottom end of the pressing rod 85, and the lower end abuts the bottom of the drive cavity 89.

[0134] An escape groove 845 in the movable member 82 laterally extends through the locking portion 88. A locking block 84 is rotatably connected to the escape groove 845 via a protruding shaft 842. One end of the locking block 84 is in transmission connection with the pressing rod 85. When the pressing rod 85 is in a neutral position, the other end of the locking block 84 extends out of the escape groove 845 and engages with the locking hole 811 to limit the sliding movement of the locking portion 88. When the pressing rod 85 is pressed, it drives the locking block 84 to rotate until it is fully retracted into the escape groove 845, releasing the engagement with the locking hole 811. A guide curved surface or guide inclined surface 841 is provided at the bottom of the locking block 84. When the locking portion 88 is inserted into the mounting groove 812, the guide curved surface or guide inclined surface 841 of the locking block 84 contacts the wall of the opening of the mounting groove 812 of the fixed member 81, allowing the locking block 84 to automatically retract into the escape groove 845.

[0135] The middle region of the pressing rod 85 is provided with a reduced diameter section 852. The diameter of this section is smaller than that of the main body of the pressing rod 85, creating two stepped surfaces 853 between the reduced diameter section 852 and the main body of the pressing rod 85. The reduced diameter section 852 moves in the area connecting the drive cavity 89 and the avoidance groove 845. One end of the locking block 84, which is transmission-connected to the pressing rod 85, abuts against the stepped surface 853 and is provided with a snap-fit notch 843 through which the reduced diameter section 852 passes, thereby achieving a transmission connection between the locking block 84 and the pressing rod 85. This allows the locking block 84 to rotate when the pressing rod 85 moves axially. A limiting surface 844 is provided inside the snap-fit notch 843, which abuts against the reduced diameter section 852. When the pressing rod 85 moves toward the outside of the driving cavity 89, the limiting surface 844 moves toward and abuts against the reduced diameter section 852, limiting the outward movement of the pressing rod 85 to its limit.

[0136] The top of the movable member 82 is provided with an abutment portion 87 that abuts the top of the fixed member 81. Abutment portion 87 is a metal plate secured to the top of the movable member 82 by screws. When the locking portion 88 is fully embedded in the mounting groove 812, the abutment portion 87 abuts the top of the fixed member 81, limiting the axial movement of the movable member 82.

[0137] When the movable member 82 and the fixed member 81 are installed, the locking portion 88 is aligned with the installation groove 812 and the locking portion 88 is inserted into the installation groove 812. During the insertion, the locking block 84 abuts against the fixed member 81 and automatically retracts into the avoidance groove 845, allowing the locking portion 88 to be smoothly inserted into the installation groove 812. When the abutting portion 87 abuts against the top of the fixed member 81, the locking portion 88 and the installation groove 812 are fully matched, and the locking block 84 moves exactly to the locking hole 811 area. Under the action of the elastic member 851, the pressing rod 85 moves, causing the locking block 84 to expose the avoidance groove 845 and extend into the locking hole 811, thereby limiting the sliding movement of the locking portion 88.

[0138] When disassembly is required, the user presses the pressing rod 85 to retract the locking block 84 into the avoidance groove 845 , and then the movable member 82 can be directly pulled out from the fixing member 81 .

[0139] like Figures 17 to 20 As shown, two downwardly extending fixed connectors 91 are provided on the frame 2 . The fixed connectors 91 are tubular and are laterally spaced apart. The lower ends of the fixed connectors 91 are connected to the display screen 9 .

[0140] An elastically deformable sheet-like connecting portion 911 extends from the lower end of the fixed connecting member 91 , and a rotation locking mechanism is provided between the sheet-like connecting portions 911 . The rotation locking mechanism is connected to the display screen 9 and realizes angular rotation and angular locking of the display screen 9 .

[0141] The rotation locking mechanism includes a support sleeve 93, which is tubular and disposed transversely between the two sheet-shaped connecting portions 911. Two connecting pipes 92 extending vertically and spaced laterally are provided on the back side of the display screen 9. The outer wall of the support sleeve 93 is welded to the two connecting pipes 92.

[0142] The rotation locking mechanism also includes a transversely arranged rotating shaft 95, which passes through two sheet-like connecting portions 911. The right end of the rotating shaft 95 is rotationally fixed to the right sheet-like connecting portion 911 via a rotating shaft fixing seat 99, which is screwed to the sheet-like connecting portion 911. The right end of the rotating shaft 95 is provided with a rotating handle 951 for rotating the rotating shaft 95. The left end of the rotating shaft 95 has an externally threaded structure 952. A nut 94 is welded to the outer wall of the left sheet-like connecting portion 911. The externally threaded structure 952 of the rotating shaft 95 and the nut 94 threadably engage with each other, thereby indirectly threading the rotating shaft 95 with the left sheet-like connecting portion 911. The shaft fixing seat 99 will limit the axial direction of the entire shaft 95, so that the shaft 95 can only rotate circumferentially but cannot move axially. Therefore, when the user rotates the rotating handle 951, the sheet-like connecting part 911 on the left will deform closer to or away from the sheet-like connecting part 911 on the right, causing the lateral spacing between the two sheet-like connecting parts 911 to become smaller or larger.

[0143] A first locking portion is welded to the left and right ends of the support sleeve 93. The first locking portion is configured as a first end toothed disc 961, which has an annular ring of racks. A second locking portion is welded to the inner side of the sheet-like connecting portion 911, facing the first end toothed disc 961. The second locking portion is configured as a second end toothed disc 962, which has an annular ring of racks. The first end toothed disc 961 and the second end toothed disc 962 can mesh with each other.

[0144] The support sleeve 93 is sleeved on the rotating shaft 95 and can move axially and rotate circumferentially on the rotating shaft 95. The support sleeve 93, the rotating shaft 95, the first end gear disc 961 and the second end gear disc 962 are all coaxially arranged, and the axis of the first end gear disc 961 and the second end gear disc 962 are both provided with a through hole for the rotating shaft 95 to pass through.

[0145] An axially extending inner sleeve 98 is fixedly mounted within the support sleeve 93. The inner sleeve 98 is welded to the axially inner end surface of the first end gear plate 961 and is sleeved onto the outside of the rotating shaft 95. The inner wall of the inner sleeve 98 is provided with a radially inwardly extending annular extension 981. The extension 981 is in contact with the outer wall of the rotating shaft 95, thereby rotatably supporting the entire support sleeve 93 on the rotating shaft 95.

[0146] The inner cavity of inner sleeve 98 mates with the through-hole of first-end toothed disc 961, forming a cavity surrounding rotating shaft 95. A second spring 97 is housed within this cavity, with one end of second spring 97 abutting extension 981 and the other end extending out of the through-hole of first-end toothed disc 961 and abutting second-end toothed disc 962. When the distance between the two sheet-like connecting portions 911 increases, second spring 97 drives first-end toothed disc 961 and second-end toothed disc 962 apart, applying a spring force toward the first and second end toothed discs 961, 962, thereby maintaining their separated and unlocked state.

[0147] During use, the user can rotate the rotary handle 951 in the positive direction to increase the distance between the two sheet-like connecting parts 911. At this time, under the action of the second spring 97, the first and second locking parts automatically separate from each other and release the circumferential constraint, allowing manual adjustment of the circumferential angle of the display screen 9. After adjusting to the desired angle, the user rotates the rotary handle in the negative direction to decrease the distance between the two sheet-like connecting parts 911. At this time, the first and second locking parts engage with each other and generate a circumferential constraint, thereby locking the display screen 9 at the current angle.

Claims

1. A training device, characterized in that: The machine comprises a frame and a training board arranged in front and back, wherein the frame is provided with a damping training component and a display screen, and a fixing seat extending in the front-to-back direction and located below the training board is provided at the bottom of the frame, the training board is rotatably connected to the frame and a locking mechanism is provided between the fixing seat and the training board, and the locking mechanism comprises: a main shaft, which is rotatably connected to a fixed seat of the frame and passes upward through the training plate; a control handle, which is rotatably arranged on the top end of the main shaft; A pressing block is sleeved on the main shaft and can slide along the main shaft to tighten or loosen the training board, including a low tightening position and a high unlocking position; A connecting rod, whose two ends are respectively hinged to the pressing block and the operating handle, and includes a first hinged end hinged to the operating handle and a second hinged end hinged to the pressing block; The first hinged end is offset from the rotation axis of the control handle; when the control handle is rotated, the height position of the first hinged end can be changed, driving the connecting rod to move, and then driving the pressing block to slide along the main axis between the clamping position and the unlocking position; A first U-shaped groove opening toward the side of the frame is provided at the edge of the training board, and the main shaft passes through the first U-shaped groove upward and can swing into or out of the first U-shaped groove; when the pressure block is in the unlocked position, the main shaft can swing along the first U-shaped groove toward the inner side of the frame, so that the main shaft withdraws from the first U-shaped groove, thereby providing avoidance space for the training board when folding.

2. The training device according to claim 1, characterized in that: A pad is detachably fixed on the training board, and the pad is located in the contact area between the training board and the pressing block; the pad is provided with an upwardly open matching groove, and the shape of the matching groove is adapted to the outer shape of the pressing block; When the pressing block switches between the pressing position and the unlocking position, the training board is locked or unlocked by pressing or releasing the pad.

3. The training device according to claim 1, characterized in that: The fixing seat is provided with a rotation groove extending in the front-to-back direction, and the main shaft passes through the rotation groove and the first U-shaped groove in sequence from bottom to top. When the main shaft exits the first U-shaped groove and leans against the end groove wall of the rotation groove, the locking mechanism reaches the avoidance position and provides avoidance space for the training board when it is folded.

4. The training device according to claim 1, characterized in that: The bottom plate of the frame is rotatably connected to a locking shaft extending in a horizontal direction, and the main shaft is rotatably connected to the bottom plate through the locking shaft, and the locking shaft is provided with a through-axis hole; the main shaft is arranged perpendicular to the locking shaft and passes through the axis hole and is fixedly connected to the locking shaft; the bottom end of the main shaft is provided with an external thread section, and the threaded adjustment member is threadedly engaged with the external thread section; When the threaded adjustment member is rotated, it drives the main shaft to rise and fall in the vertical direction by abutting against the lower surface of the locking shaft, thereby controlling the downward pressure of the pressing block when it is in the pressing position.

5. The training device according to claim 4, characterized in that: A plurality of U-shaped avoidance holes are formed on the bottom side wall of the threaded adjustment member along the circumferential direction. The U-shaped avoidance holes penetrate the bottom end surface of the threaded adjustment member and are evenly spaced around the axis. A radial pin hole is formed on the outer wall of the external thread section, and the pin hole is equipped with an anti-rotation pin. When the threaded adjustment member is rotated to a target pressure position, the anti-rotation pin passes through the U-shaped avoidance hole and is inserted into the radial pin hole for fixation, so as to prevent the threaded adjustment member from circumferential rotation.

6. The training device according to claim 4, characterized in that: A first spring is sleeved on the main shaft, and the two ends of the first spring are respectively in contact with the bottom of the pressing block and the top of the locking shaft, and the first spring applies a force to the pressing block to move the pressing block toward the top of the main shaft; When the operating handle is rotated to switch the pressing block from the pressing position to the unlocking position, the first spring assists in pushing the pressing block to move, so that the pressing block quickly approaches and switches to the unlocking position.

7. The training device according to claim 1, characterized in that: When the pressure block is in the clamping position and the unlocking position, the main shaft is arranged vertically; when the pressure block is in the clamping position, the rotation axis of the control handle, the first hinge end and the second hinge end are located on the same straight line perpendicular to the horizontal plane; the rotation axis is located at the top end, and the first hinge end is located between the rotation axis and the second hinge end.

8. The training device according to claim 1, characterized in that: The side wall of the training board is provided with a locking hole, and the frame is provided with an elastic latch for inserting into the locking hole and an abutment block abutting against the surface of the training board. When the training board is in a folded state, the elastic latch is inserted into the locking hole and the abutment block abuts against the surface of the training board to maintain the folded state of the training board. The side wall of the training board is further provided with a wedge-shaped protrusion, the elastic latch is located on the turning path of the wedge-shaped protrusion, and the wedge-shaped protrusion has a guiding inclined surface. When the elastic latch contacts the guiding inclined surface, the guiding inclined surface presses the elastic latch to cause the elastic latch to contract, so that the elastic latch can be inserted into the locking hole; or The end of the elastic latch is wedge-shaped to have a guiding inclined surface. When the training board abuts against the guiding inclined surface of the elastic latch, the elastic latch can be inserted into the locking hole after being contracted.

9. The training device according to any one of claims 1 to 8, characterized in that: A locking mechanism for rotating and locking the display screen is provided between the display screen and the frame, and the locking mechanism includes: Two fixed connecting pieces fixed to the frame at intervals in the horizontal direction; A rotating shaft, one end of which is rotatably fixed to a fixed connecting member and a rotating handle is provided at the end thereof, the other end of which has an external thread structure and is threadably engaged with another fixed connecting member, and when the rotating handle is rotated, the lateral spacing between the two fixed connecting members changes; A support sleeve is sleeved on the rotating shaft and is transversely arranged between the two fixed connectors. The outer wall of the support sleeve is fixed to the display screen. The support sleeve can rotate circumferentially or move axially on the rotating shaft. a first locking portion, which is provided at both axial ends of the supporting sleeve; second locking portions, respectively fixedly disposed on the inner sides of the two fixed connectors facing the first locking portions; The opposite end surfaces of the first locking portion and the second locking portion have concave and convex structures that can be fitted into each other to produce circumferential constraints; When the rotating handle is rotated to increase the distance between the two fixed connecting parts, the first locking part and the second locking part are separated and the circumferential constraint is released, allowing manual adjustment of the circumferential angle of the display screen; when the rotating handle is rotated to reduce the distance between the two fixed connecting parts, the first locking part and the second locking part are engaged with each other and produce a circumferential constraint, thereby locking the display screen at the current angle.

10. The training device according to claim 9, characterized in that: The first locking portion, the second locking portion, the rotating shaft and the supporting sleeve are coaxially arranged; The first locking portion and the second locking portion are both provided with a through hole for the rotating shaft to pass through; An axially extending inner sleeve is fixedly provided inside the support sleeve, and the inner sleeve is sleeved outside the rotating shaft; The inner wall of the inner sleeve is provided with a circle of extensions extending radially inwards, and the extensions are in contact with the outer wall of the rotating shaft, so that the supporting sleeve is rotatably supported on the rotating shaft; The inner cavity of the inner sleeve is connected to the through hole of the first locking portion to form a cavity surrounding the rotating shaft; A second spring sleeved on the rotating shaft is provided in the cavity, one end of the second spring abuts against the extending portion, and the other end abuts against the second locking portion.

11. The training device according to claim 9, characterized in that: The first locking portion is configured as a first end toothed disc, and the second locking portion is configured as a second end toothed disc; the first end toothed disc and the second end toothed disc can engage with each other to provide circumferential locking.

12. The training device according to any one of claims 1 to 8, characterized in that: The damping training assembly includes a motor compartment that generates damping force and a pulley assembly that is detachably fixed to a frame or a training board. The pulley assembly is provided with a training handle that is connected to the motor compartment via a traction rope. The pulley assembly includes: A fixing member disposed on the frame and the training board, the fixing member having a T-shaped mounting slot extending along a first direction, and a sidewall of the mounting slot having a lock hole with a lateral opening; A movable part detachably assembled with the fixing part, the movable part comprising: pulley block; a locking portion having a T-shaped matching structure complementary to the shape of the mounting groove and configured to be slidably engaged with the mounting groove along a first direction; a driving cavity extending along the first direction and disposed adjacent to the locking portion, wherein a pressing rod and an elastic member are disposed in the driving cavity, and wherein the elastic member applies an elastic force to the pressing rod to move toward the outside of the driving cavity; an avoidance groove, which is in communication with the driving cavity and laterally penetrates the locking portion; A locking block is rotatably connected to the avoidance groove, one end of the locking block is transmission-connected to the pressing rod, and when the pressing rod is in a natural state, the other end of the locking block extends to the outside of the avoidance groove and cooperates with the lock hole to limit the sliding of the locking part; When the pressing rod is pressed, the locking block can be driven to rotate until it is completely retracted into the avoidance groove, thereby releasing the engagement with the lock hole.

13. The training device according to claim 12, characterized in that: The pressing rod is provided with a reduced diameter section, the diameter of which is smaller than the diameter of the pressing rod body, so that a step surface is formed between the reduced diameter section and the pressing rod body, and the reduced diameter section moves in the area where the driving cavity and the avoidance groove are connected. One end of the locking block that is transmission-connected to the pressing rod abuts against the step surface and is provided with a snap-fitting notch for the reduced diameter section to pass through, so as to realize the transmission connection between the locking block and the pressing rod; A limiting surface that can abut against the diameter-reducing section is provided on the inner side of the engaging notch. When the pressing rod moves toward the outside of the driving cavity, the limiting surface moves toward the diameter-reducing section and abuts against the diameter-reducing section to limit the extreme position of the outward movement of the pressing rod.

14. The training device according to claim 12, characterized in that: The fixing member connected to the training board is arranged on the training board in a rigid fixing manner; The fixing part connected to the frame is arranged on the frame in a sliding fit manner, and the frame is provided with a gear rod extending in the vertical direction, and the fixing part is provided with a sliding sleeve, and the sliding sleeve is sleeved and slidably fitted on the gear rod, and the gear rod is provided with a plurality of gear holes evenly spaced along the vertical direction, and the wall of the sliding sleeve is provided with an elastic latch lock inserted into the gear hole to achieve high locking of the fixing part and the gear rod, and the latch end of the elastic latch lock is provided with a rolling part or a rotating part for preventing scratches and damage to the gear rod.

15. The training device according to claim 12, characterized in that: The top of the movable part is provided with an abutting portion that abuts against the top of the fixed part; when the locking part is fully embedded in the installation groove, the abutting portion abuts against the top of the fixed part to limit the axial sliding of the movable part; The bottom of the locking block is provided with a guiding curved surface or a guiding inclined surface. When the locking portion is inserted into the installation groove, the guiding curved surface or the guiding inclined surface of the locking block contacts the fixing member, so that the locking block can automatically retract into the avoidance groove.

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