Foldable locking training frame body and training equipment

Abstract

The utility model belongs to fitness equipment technical field especially relates to a training frame body and training equipment of foldable locking. A training frame body of foldable locking, including frame, training board and locking mechanism, locking mechanism includes: main shaft, the control handle of rotation connection in the top of main shaft, the pressure block of cover in main shaft, transmission spare and pressure block and control handle articulate, including first articulated end and second articulated end, first articulated end deviates the rotation axis of control handle, when control handle rotates, the pressure block slides along the main shaft and switches between the locking position and unlocking position, the edge of training board is equipped with the accommodating groove of opening to the bottom plate side, and the main shaft can swing along the accommodating groove to the inside direction of frame, makes the main shaft exit from accommodating groove, thereby provides the avoiding space for training board when folding. The utility model has the advantages of convenient user locking and unlocking, higher safety simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, and in particular relates to a foldable and lockable training frame and training equipment. Background Technology

[0002] Training equipment refers to equipment used for exercise or rehabilitation. It typically includes a training frame, which consists of a vertically supported frame on the ground and a flip-up training board that saves storage space by flipping it.

[0003] Currently, to prevent the training board from bouncing during training, a locking component is used to lock the training board. For example, Chinese Patent Application No. CN202420942564.6 discloses a locking component and training device, which includes a first locking seat set on the frame base plate, a second locking seat on the training board, and a connecting rod (with a first locking block and a cam-shaped second locking block at both ends).

[0004] The locking mechanism is as follows: the second locking seat is squeezed or released by rotating the second locking block. After releasing the second locking seat, the entire locking mechanism needs to be rotated so that the first locking block disengages from the first rod mounting hole of the first locking seat. Then, the entire training plate can be flipped over. When the training plate needs to be reset and unfolded, the first locking block needs to be precisely aligned and inserted into the first rod mounting hole of the first locking seat. Then, the connecting rod is rotated, and then the second locking block is rotated to press the second locking block against the training plate.

[0005] The above operating method has the following drawbacks: 1. Each locking / unlocking requires rotating the cam to squeeze / release the second locking seat, causing repeated friction between the cam and the second locking seat. Long-term use can easily wear down the contact surface, reducing locking force and reliability. 2. Folding requires two steps (releasing the cam + rotating the rod to disengage from the hole), and unfolding and resetting is particularly inconvenient and dangerous: the user needs to support the training plate to keep it horizontal / at a specific angle, while simultaneously and laboriously adjusting the position of the connecting rod to align the first locking block with the hole for insertion. This operation is difficult and time-consuming. More seriously, when supporting the training plate and adjusting the connecting rod for alignment, the user's fingers can easily get caught in the narrow gaps between the training plate, the frame, and the connecting rod, posing a risk of pinching the fingers. Utility Model Content

[0006] To address the shortcomings of existing technologies, a foldable locking training board is provided that is convenient for users to lock and unlock while offering enhanced security.

[0007] This utility model is achieved using the following technical solution: a foldable and lockable training frame, comprising a frame, a training plate rotatably connected to the frame, and a locking mechanism disposed between the training plate and the base plate of the frame, wherein the locking mechanism includes:

[0008] The main shaft is rotatably connected to the base plate of the frame and extends upward through the training plate;

[0009] A control handle, the rotation of which is located at the top of the main shaft;

[0010] A pressure block, which is sleeved on the main shaft, can slide along the main shaft to press or release the training plate, including a low pressing position and a high unlocking position.

[0011] A transmission component, the two ends of which are respectively hinged to a pressure block and a control handle, includes a first hinged end hinged to the control handle and a second hinged end hinged to the pressure block.

[0012] The first hinge end is offset from the rotation axis of the control handle; when the control handle is rotated, the height position of the first hinge end can be changed, which drives the transmission component to move, thereby driving the pressure block to slide and switch between the pressing position and the unlocking position along the main shaft.

[0013] The training board has a receiving groove at its edge that opens towards the bottom plate and extends through the training board. The main shaft passes upward through the receiving groove and can swing into or out of the receiving groove. When the pressure block is in the unlocked position, the main shaft can swing along the receiving groove toward the inside of the frame, so that the main shaft exits from the receiving groove, thereby providing clearance space for the training board when folding.

[0014] When the training board needs to be folded and stored, the user rotates the control handle to switch the pressure block from the low pressing position to the high unlocking position, thus releasing the training board. Then, the entire spindle is swung inwards along the receiving groove, disengaging it from the groove. At this point, the locking mechanism avoids collisions with the training board during rotation and folding, allowing it to rest comfortably against the frame.

[0015] When the training board needs to be unfolded, the user can directly unfold the training board from its folded state and lay it flat. During the flipping process from folded to flat, the entire locking mechanism will still avoid the training board, allowing it to be laid flat smoothly. Then, the swing spindle is reset and re-enters the receiving groove. The spindle passes through the receiving groove from bottom to top. At this time, rotating the control handle will switch the pressure block from the high unlocked position to the low pressing position, thus switching the pressure block from the loosened state to the pressed state.

[0016] The transmission component can be a rope, a connecting rod, or something similar.

[0017] In this design, the pressure block slides linearly only along the axial direction of the main shaft, achieving height position switching (i.e., vertical lifting). This movement method ensures that the contact surface between the pressure block and the training plate only experiences vertical contact or separation, completely avoiding continuous sliding friction caused by rotational friction (such as cam structures). This significantly reduces wear on the corresponding pressure surfaces of the pressure block and the training plate, thereby greatly improving the durability and long-term operational reliability of the locking mechanism.

[0018] Furthermore, this solution simplifies unlocking and folding operations: users only need to rotate the control handle (first step) to raise the pressure block to the unlocked position, and then simply swing the spindle inwards towards the frame (second step) to remove it from the receiving slot of the training plate. The entire process requires only two steps (rotation + swing), and there is no need to rotate the locking mechanism itself to disengage it from the hole, making the operation intuitive and convenient.

[0019] The training board is also safer to reset and unfold. When the training board is folded to unfold and laid flat, there is no need to make precise adjustments or align the slots. Users can simply place the training board down. There is no risk of pinching fingers, making it safer.

[0020] Preferably, the training plate has a pad fixed at the upper opening of the receiving groove, and the pad is located in the contact area between the training plate and the pressing block; the pad has an upward-opening mating groove, and the shape and contour of the mating groove are adapted to the shape of the pressing block.

[0021] When the pressure block switches between the pressed and unlocked positions, it locks or unlocks the training board by pressing or releasing the pad.

[0022] By adding pads, the clamping force of the pressure block can be dispersed, thus preventing the training plate from deforming after prolonged pressure. The mating grooves increase the stability between the pressure block and the pads, and the pads can be detachably fixed to the training plate, allowing for pad replacement after extended use.

[0023] Preferably, the base plate is provided with a rotating groove extending along the line connecting the base plate and the horizontal training board. The main shaft passes through the rotating groove and the receiving groove from bottom to top. When the main shaft exits the receiving groove and rests against the end wall of the rotating groove, the locking mechanism reaches the avoidance position and provides avoidance space for the training board when it is folded.

[0024] 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 receiving groove and leans against the end wall of the rotating groove, the user can know that the entire locking mechanism is in the avoidance position. The training plate can be folded, which is equivalent to a prompt, making it easy for the user to judge whether the locking mechanism has avoided the position.

[0025] Preferably, a spring is sleeved on the main shaft, and the spring applies a directional force to the pressure block to move the pressure block toward the top of the main shaft;

[0026] When the control handle is rotated to switch the pressure block from the pressed position to the unlocked position, the spring assists in pushing the pressure block to move, so that the pressure block quickly approaches and switches to the unlocked position.

[0027] The spring continuously provides preload force, allowing the pressure block to naturally tilt towards the unlock position. When the user turns the handle to unlock, this spring force significantly counteracts the downward pressure, greatly reducing operating resistance and achieving a smooth "unlock with a light turn" experience.

[0028] Preferably, the transmission component is a connecting rod.

[0029] The connecting rod has a good transmission effect.

[0030] Preferably, when the pressure block is in the pressing position and the unlocking position, the main shaft is vertically oriented; when the pressure block is in the pressing 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.

[0031] When the pressure block is in the clamped position, the three points of the rotation axis, the first hinge end, and the second hinge end are on the same vertical line, and the rotation axis is at its highest position, causing the mechanism to enter the state of passing the center dead point: 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 component. Because the lever 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 plate is transmitted through the pressure block and the transmission component, which also forms an axial force through the rotation axis. Similarly, because the lever arm is zero or close to zero, it cannot generate the unlocking torque; the system maintains static balance in the locked state, and external forces cannot trigger unlocking; only when the user applies active torque to the control handle, driving the first hinge end to rise 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.

[0032] Preferably, a locking shaft extending in a horizontal direction is rotatably connected to the base plate of the frame, and the main shaft is rotatably connected to the base plate through the locking shaft. The locking shaft has a through shaft hole. The main shaft is arranged perpendicular to the locking shaft and passes through the shaft hole and is fixedly connected to the locking shaft. The bottom end of the main shaft has an external thread section, and a threaded adjustment component is threadedly engaged with the external thread section.

[0033] When the threaded adjusting component is rotated, it drives the main shaft to move up and down in the vertical direction by abutting against the lower surface of the locking shaft, thereby controlling the downward pressure of the pressure block when it is in the pressing position.

[0034] The downward pressure of the pressure block can be adjusted by rotating the threaded adjustment component.

[0035] Preferably, the bottom sidewall of the threaded adjustment component is provided with a plurality of U-shaped clearance holes along the circumferential direction, the U-shaped clearance holes penetrating the bottom end face of the threaded adjustment component and being evenly spaced around the axis; the outer wall of the external thread section is provided with a radial pin hole, the pin hole being equipped with an anti-rotation pin.

[0036] When the threaded adjustment component is rotated to the target pressure position, the anti-rotation pin passes through the U-shaped clearance hole and is inserted into the radial pin hole to fix it, thereby preventing the threaded adjustment component from rotating circumferentially.

[0037] The above solution can prevent the threaded adjustment parts from loosening after long-term use, thus ensuring that the pressure value of the pressure block remains constant.

[0038] Preferably, the training board has a locking hole on its side wall, and the frame has an elastic pin for inserting into the locking hole and an abutting block for abutting the surface of the training board. When the training board is in a folded state, the elastic pin is inserted into the locking hole and the abutting block abuts the surface of the training board to maintain the folded state of the training board.

[0039] The training plate also has a wedge-shaped protrusion on its side wall. The elastic pin is located on the flipping path of the wedge-shaped protrusion, and the wedge-shaped protrusion has a guide slope. When the elastic pin contacts the guide slope, the guide slope presses against the elastic pin, causing the elastic pin to retract and allowing it to be inserted into the locking hole; or

[0040] The end of the elastic pin is wedge-shaped with a guide slope. When the training plate abuts against the guide slope of the elastic pin, the elastic pin retracts and can be inserted into the locking hole.

[0041] By setting wedge-shaped protrusions or making the end of the elastic pin wedge-shaped, the elastic pin can automatically retract when the training board is folded, allowing the elastic pin to lock into the locking hole, making it convenient for users to lock the training board when folding.

[0042] A training device having the aforementioned foldable and lockable training frame includes: a display screen, a pulley assembly, and a motor compartment mounted on the frame. The motor compartment and the pulley assembly are connected by a traction rope. The pulley assembly is height-adjustable on the frame. The pulley assembly includes a training handle. The traction rope is connected to the training handle, so that the motor compartment provides a damping force to the training handle.

[0043] Compared with existing technologies, the advantages of this invention are as follows: the pressure block in this design slides linearly only along the axial direction of the main shaft, achieving height position switching (i.e., vertical lifting). This movement method ensures that the contact surface between the pressure block and the training plate only experiences vertical contact or separation, completely avoiding continuous sliding friction caused by rotational friction (such as cam structures). This significantly reduces wear on the corresponding pressure surfaces of the pressure block and the training plate, thereby greatly improving the durability and long-term operational reliability of the locking mechanism.

[0044] Furthermore, this solution simplifies unlocking and folding operations: users only need to rotate the control handle (first step) to raise the pressure block to the unlocked position, and then simply swing the main shaft inwards towards the frame (second step) to remove it from the receiving slot of the training plate. The entire process requires only two steps (rotation + swing), and there is no need to rotate the locking mechanism itself to disengage it from the hole, making the operation intuitive and convenient.

[0045] The training board is also safer to reset and unfold. When the training board is folded to unfold and laid flat, there is no need to make precise adjustments or align the slots. Users can simply place the training board down. There is no risk of pinching fingers, making it safer. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the training board when it is unfolded, laid flat, and compressed.

[0047] Figure 2 for Figure 1 Side view of the area where the training board is being pressed down;

[0048] Figure 3 This is a schematic diagram of the locking mechanism in the clamping position;

[0049] Figure 4 An exploded view of the locking mechanism;

[0050] Figure 5 for Figure 2 A sectional view;

[0051] Figure 6 This is a schematic diagram of the training board when it is unfolded, laid flat, and unlocked.

[0052] Figure 7 for Figure 6 A structural diagram of the detachable locking mechanism;

[0053] Figure 8 This is a structural diagram of the locking mechanism in the unlocked position;

[0054] Figure 9 This is a schematic diagram of the locking mechanism after it has been unlocked and swung to the avoidance position.

[0055] Figure 10This is a schematic diagram of the pad block structure;

[0056] Figure 11 for Figure 10 A schematic diagram of the structure after removing the padding blocks;

[0057] Figure 12 This is a schematic diagram of the training board in its folded state.

[0058] Figure 13 for Figure 12 An enlarged view of the locking mechanism;

[0059] Figure 14 Enlarged view of the flexible pin and the abutment block;

[0060] Figure 15 This is an enlarged view of the training board in its folded state with the elastic pin inserted into the locking hole.

[0061] Reference numerals: 1. Training board; 11. Rotating arm; 111. Locking hole; 112. Wedge-shaped protrusion; 12. Pad; 121. Mating groove; 122. U-shaped groove; 13. Screw; 14. Receiving groove;

[0062] 2. Frame; 21. Base plate; 22. Display screen; 23. Pulley assembly; 24. Training handle; 25. Motor compartment; 26. Flexible pin; 27. Abutment block; 28. Fixing base; 281. Rotating groove; 29. ​​Traction rope;

[0063] 3. Control handle; 31. Rotation axis; 32. Block; 33. Handle; 34. Arc-shaped notch;

[0064] 4. Connecting rod; 41. First hinge end; 42. Second hinge end;

[0065] 5. Spindle; 51. Spring; 52. Anti-rotation pin; 53. Threaded adjustment component; 531. U-shaped clearance hole; 54. Flat part; 55. External thread section;

[0066] 6. Locking shaft; 61. Set screw; 62. Shaft hole;

[0067] 7. Pressing blocks;

[0068] 100. Locking mechanism. Detailed Implementation

[0069] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0070] like Figure 1As shown, this embodiment discloses a training device with a foldable and lockable training frame, which includes a training frame, a frame 2 and a training plate 1. The training plate 1 is provided with two rotating arms 11 extending toward the frame 2. The two rotating arms 11 are located on the left and right sides of the rear end of the training plate 1, respectively. The rotating arms 11 are rotatably connected to the base plate 21 of the frame 2.

[0071] The frame 2 is equipped with a display screen 22, a pulley assembly 23, and a motor housing 25. The motor housing 25 is connected to the pulley assembly 23 via a traction rope 29. The pulley assembly 23, display screen 22, and motor housing 25 are all components found in existing integrated training devices. The vertical rod of the frame 2 has multiple vertically spaced insertion holes. The pulley assembly 23 engages with these holes using existing operating methods, such as using existing flexible pins, allowing the height of the pulley assembly 23 to be adjusted on the frame 2. The pulley assembly 23 has a training handle 24, which is connected to the traction rope 29, providing damping force to the motor housing 25. The display screen 22 allows for human-machine interaction; users can adjust the damping force of the motor housing 25 by touching the display screen 22.

[0072] like Figures 1 to 5 , Figure 10 , Figure 11 and Figure 13 As shown, two fixed seats 28 extending towards the training plate 1 are provided at the front end of the base plate 21. The fixed seats 28 are located below the training plate 1, and a locking mechanism 100 is provided between the fixed seats 28 and the training plate 1. The locking mechanism 100 includes a main shaft 5, a control handle 3, a pressure block 7, and a transmission component. 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 is rotatably connected to the fixed seats 28. The locking shaft 6 has a shaft hole 62 through which the main shaft 5 passes. The shaft hole 62 is provided in the radial direction of the locking shaft 6, and the main shaft 5 passes through the locking shaft 6. The axial ends of the locking shaft 6 have set screw holes communicating with the shaft hole 62. The set screw 61 is inserted into the set screw hole to abut against the side wall of the main shaft 5. A flat part 54 with a flat side wall surface is provided on the side wall of the main shaft 5. The set screw 61 abuts against the flat part 54, thereby fixing the main shaft 5 and restricting the rotation of the main shaft 5.

[0073] The control handle 3 is rotatably mounted on the top of the main shaft 5. The control handle 3 includes a block portion 32 and a handle portion 33.

[0074] The pressure block 7 is a cylindrical structure extending in the horizontal direction. The pressure block 7 is sleeved on the main shaft 5. The pressure block 7 can slide along the axial direction of the main shaft 5. The pressure block 7 is located above the training plate 1 and below the control handle 3 for pressing or releasing the training plate 1. The pressure block 7 includes a pressing position at a low position and an unlocking position at a high position.

[0075] The transmission component is located between the pressure block 7 and the control handle 3. The transmission component is a connecting rod 4, which is in the shape of an "8". The two ends of the connecting rod 4 are respectively hinged to the pressure block 7 and the control handle 3. It includes a first hinge end 41 hinged to the control handle 3 and a second hinge end 42 hinged to the pressure block 7.

[0076] like Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, the block portion 32 of the control handle 3 is rotatably connected to the top of the main shaft 5 via a pivot, which is the rotation axis 31 of the control handle 3. The first hinge end 41 is offset 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, thereby driving the pressure block 7 to slide and switch between the pressing position and the unlocking position along the main shaft. The block portion 32 is provided with an arc-shaped notch 34. When the control handle 3 rotates so that the pressure block 7 is in the low pressing position, the arc-shaped notch 34 abuts and matches the upper surface of the pressure block 7.

[0077] When the pressure block 7 is in the pressed and unlocked positions, the main shaft 5 is vertically oriented. When the control handle 3 is rotated, the height of the rotation axis 31 remains unchanged, while the first hinge end 41 rotates around the rotation axis 31, causing a change in its height. This, in turn, causes the connecting rod 4 to move, which in turn causes a change in the height of the pressure block 7. When the pressure block 7 is in the pressed position, the rotation axis 31, the first hinge end 41, and the second hinge end 42 of the control handle 3 are all 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.

[0078] like Figure 1 , Figure 2 , Figure 5 , Figure 7 , Figure 9 , Figure 10 and Figure 11 As shown, a pad 12 is fixedly connected to the training plate 1 by screws 13. The pad 12 is located in the contact area between the training plate 1 and the pressure block 7. The pad 12 has an upward-opening mating groove 121, which is an arc-shaped groove whose shape and contour are adapted to the shape of the pressure block 7. When the pressure block 7 switches between the pressing position and the unlocking position, it presses or releases the pad 12 to achieve pressing and locking or releasing and unlocking of the training plate 1.

[0079] The base plate 21 has a fixed seat 28 with a rotating groove 281 extending in the front-to-back direction (the direction of the line connecting the base plate 21 and the horizontal training plate 1). The edge of the training plate 1 has a receiving groove 14 that can be aligned with the rotating groove 281. The receiving groove is U-shaped, and the pad block 12 has a U-shaped groove 122. The U-shaped groove 122 is longitudinally aligned and connected with the receiving groove 14 at the edge of the training plate 1. The main shaft 5 passes through the rotating groove 281, the receiving groove 14, and the U-shaped groove 122 from bottom to top. When the pressure block 7 is in the unlocked position, the main shaft 5 can swing inward along the rotating groove 281 towards the inside of the frame 2, so that the main shaft 5 exits from the receiving groove 14, and finally the main shaft 5 rests against the end wall of the rotating groove 281, thereby providing clearance space for the training plate 1 when folding.

[0080] like Figures 2 to 8 As shown, a spring 51 is fitted onto the main shaft 5. The upper end of the spring 51 abuts against the bottom of the pressure block 7, and the lower end of the spring 51 abuts against the top of the locking shaft 6. The spring 51 applies a directional force to the pressure block 7, causing it to move towards the top of the main shaft 5. When the control handle 3 is rotated to switch the pressure block 7 from the pressed position to the unlocked position, the spring 51 assists in pushing the pressure block 7 to move, allowing the pressure block 7 to quickly approach and switch to the unlocked position.

[0081] An external thread section 55 is provided at the bottom end of the main shaft 5. The thread adjustment component 53 is an existing nut, and the thread adjustment component 53 is threadedly engaged with the external thread section 55. When the thread adjustment component 53 is rotated, it drives the main shaft 5 to move up and down in the vertical direction by abutting against the lower surface of the locking shaft 6, thereby controlling the downward pressure of the pressure block 7 when it is in the pressing position.

[0082] The bottom sidewall of the threaded adjusting component 53 is provided with several U-shaped clearance holes 531 along the circumferential direction. The U-shaped clearance holes 531 penetrate the bottom end face of the threaded adjusting component 53 and are evenly distributed around the axis. The outer wall of the external thread section 55 is provided with a radial pin hole (not shown in the figure). The pin hole is equipped with an anti-rotation pin 52. When the threaded adjusting component 53 is rotated to the target pressure position, the anti-rotation pin 52 passes through the U-shaped clearance hole 531 and is inserted into the radial pin hole to fix it, so as to prevent the threaded adjusting component 53 from rotating circumferentially.

[0083] like Figures 12 to 15 As shown, the training board 1 has a locking hole 111 on the side wall of the rotating arm 11. The frame 2 has a resilient pin 26 for inserting into the locking hole 111 and an abutting block 27 that abuts against the surface of the rotating arm 11 of the training board 1. The abutting block 27 can be made of the head of a bolt. When the training board 1 is in a folded state, the resilient pin 26 is inserted into the locking hole 111 and the abutting block 27 abuts against the surface of the rotating arm 11 of the training board 1 to maintain the folded state of the training board 1.

[0084] The side wall of the rotating arm 11 is also provided with a wedge-shaped protrusion 112. The elastic pin 26 is located on the flipping path of the wedge-shaped protrusion 112, and the wedge-shaped protrusion 112 has a guide slope. When the elastic pin 26 contacts the guide slope, the guide slope presses the elastic pin 26, causing the elastic pin 26 to retract. After the elastic pin 26 moves to the alignment locking hole, the elastic pin 26 pops out again and is inserted into the locking hole 111.

[0085] In some other embodiments, the end of the elastic pin 26 may be wedge-shaped (refer to the shape of the wedge-shaped protrusion 112), giving the end of the elastic pin 26 a guide slope. When the rotating arm 11 of the training plate 1 abuts against the guide slope of the elastic pin 26, the elastic pin 26 retracts. After the elastic pin 26 moves to the alignment locking hole, it pops out again and inserts into the locking hole 111. (Not shown in the figure)

[0086] How to use:

[0087] When the training board 1 needs to be folded and stored, the user rotates the control handle 3 to switch the pressure block 7 from a low pressing position to a high unlocking position, thus changing the state of pressing the training board 1 to releasing it. Then, the entire main shaft 5 is swung, causing it to swing inwards along the rotating groove towards the frame 2, disengaging it from the receiving groove 14 and the U-shaped groove 122. The main shaft 5 rests against the end wall of the rotating groove 281. At this time, the entire locking mechanism 100 will avoid collisions when the training board 1 is rotated and folded, allowing the training board 1 to rest smoothly against the frame. During this resting, the elastic pin 26 automatically retracts under the action of the wedge-shaped protrusion 112 and then inserts into the locking hole 111, thus completing the folding and storage of the training board 1.

[0088] When the training board needs to be unfolded, the user can pull the elastic pin 26 to disengage it from the locking hole 111. Then, the training board 1 in the folded state can be unfolded downwards and laid flat. During the flipping process from folded to flat state, the entire locking mechanism 100 will still avoid the training board 1, allowing the training board 1 to be laid flat smoothly. Then, the swing spindle 5 is reset, and the spindle re-enters the receiving groove 14 and the U-shaped groove 122. The spindle 5 passes through the rotating groove 281, the receiving groove 14 and the U-shaped groove 122 from bottom to top. At this time, the control handle 3 is rotated downwards, causing the pressure block 7 to switch from the high unlocked position to the low pressing position, thereby changing the pressure block from the loose state to the pressing state.

Claims

1. A foldable and lockable training frame, characterized in that: The system includes a frame, a training plate rotatably connected to the frame, and a locking mechanism disposed between the training plate and the base plate of the frame. The locking mechanism includes: The main shaft is rotatably connected to the base plate of the frame and extends upward through the training plate; A control handle, the rotation of which is located at the top of the main shaft; A pressure block, which is sleeved on the main shaft, can slide along the main shaft to press or release the training plate, including a low pressing position and a high unlocking position. A transmission component, the two ends of which are respectively hinged to a pressure block and a control handle, includes a first hinged end hinged to the control handle and a second hinged end hinged to the pressure block. The first hinge end is offset from the rotation axis of the control handle; when the control handle is rotated, the height position of the first hinge end can be changed, which drives the transmission component to move, thereby driving the pressure block to slide and switch between the pressing position and the unlocking position along the main shaft. The training board has a receiving groove at its edge that opens towards the bottom plate and extends through the training board. The main shaft passes upward through the receiving groove and can swing into or out of the receiving groove. When the pressure block is in the unlocked position, the main shaft can swing along the receiving groove toward the inside of the frame, so that the main shaft exits from the receiving groove, thereby providing clearance space for the training board when folding.

2. The foldable and lockable training frame according to claim 1, characterized in that: The training plate has a pad fixed at the upper opening of the receiving groove, and the pad is located in the contact area between the training plate and the pressure block; the pad has an upward-opening mating groove, and the shape and outline of the mating groove are adapted to the shape of the pressure block. When the pressure block switches between the pressed position and the unlocked position, it locks or unlocks the training board by pressing or releasing the pad.

3. The foldable and lockable training frame according to claim 1, characterized in that: The base plate is provided with a rotating groove extending along the line connecting the base plate and the horizontal training board. The main shaft passes through the rotating groove and the receiving groove from bottom to top. When the main shaft exits the receiving groove and rests against the end wall of the rotating groove, the locking mechanism reaches the avoidance position and provides avoidance space for the training board when it is folded.

4. The foldable and lockable training frame according to claim 1, characterized in that: A spring is fitted on the main shaft, and the spring applies a directional force to the pressure block, causing the pressure block to move towards the top of the main shaft; When the control handle is rotated to switch the pressure block from the pressed position to the unlocked position, the spring assists in pushing the pressure block to move, so that the pressure block quickly approaches and switches to the unlocked position.

5. The foldable and lockable training frame according to any one of claims 1 to 4, characterized in that: The transmission component is a connecting rod.

6. The foldable and lockable training frame according to claim 5, characterized in that: When the pressure block is in the pressed position and the unlocked position, the main shaft is vertically oriented. When the pressure block is in the pressed position, the rotation axis of the control handle, the first hinge end, and the second hinge end are all 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.

7. The foldable and lockable training frame according to any one of claims 1 to 4, characterized in that: A locking shaft extending horizontally is rotatably connected to the base plate of the frame. The main shaft is rotatably connected to the base plate through the locking shaft. The locking shaft has a through shaft hole. The main shaft is perpendicular to the locking shaft, passes through the shaft hole, and is fixedly connected to the locking shaft. The bottom end of the main shaft has an external thread section, and a threaded adjustment component is threadedly engaged with the external thread section. When the threaded adjusting component is rotated, it drives the main shaft to move up and down in the vertical direction by abutting against the lower surface of the locking shaft, thereby controlling the downward pressure of the pressure block when it is in the pressing position.

8. The foldable and lockable training frame according to claim 7, characterized in that: The bottom sidewall of the threaded adjustment component is provided with a plurality of U-shaped clearance holes along the circumferential direction. The U-shaped clearance holes penetrate the bottom end face of the threaded adjustment component and are evenly spaced around the axis. The outer wall of the external thread section is provided with a radial pin hole, and the pin hole is equipped with an anti-rotation pin. When the threaded adjustment component is rotated to the target pressure position, the anti-rotation pin passes through the U-shaped clearance hole and is inserted into the radial pin hole to fix it, thereby preventing the threaded adjustment component from rotating circumferentially.

9. The foldable and lockable training frame according to any one of claims 1 to 4, characterized in that: The training board has a locking hole on its side wall. The frame is provided with an elastic pin for inserting into the locking hole and an abutting block for abutting the surface of the training board. When the training board is in a folded state, the elastic pin is inserted into the locking hole and the abutting block abuts the surface of the training board to maintain the folded state of the training board. The training plate also has a wedge-shaped protrusion on its side wall. The elastic pin is located on the flipping path of the wedge-shaped protrusion, and the wedge-shaped protrusion has a guide slope. When the elastic pin contacts the guide slope, the guide slope presses against the elastic pin, causing the elastic pin to retract and allowing it to be inserted into the locking hole; or The end of the elastic pin is wedge-shaped with a guide slope. When the training plate abuts against the guide slope of the elastic pin, the elastic pin retracts and can be inserted into the locking hole.

10. A training device having a foldable and lockable training frame as described in any one of claims 1 to 9, characterized in that, include: The machine includes a display screen, a pulley assembly, and a motor housing mounted on the frame. The motor housing is connected to the pulley assembly via a traction rope. The pulley assembly is height-adjustable on the frame and includes a training handle. The traction rope is connected to the training handle, allowing the motor housing to provide damping force to the training handle.

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