Counterweight power-assisted pilates bed with adjustable angle and lying posture and adjusting method of counter weight power-assisted pilates bed

Abstract

The invention discloses a counterweight power-assisted pilates bed capable of adjusting a lying posture and an adjusting method of the counterweight power-assisted pilates bed. The pilates bed comprises a bed body supporting end portion and a bed body training portion which can rotate relatively, the bed body training portion is matched with an adjustable anti-resistance training frame, and a lying posture assisting type integrated adjusting device is installed on a frame body. The device comprises an adjustment execution structure, a manual input structure and a counterweight assistance structure. The adjusting execution structure comprises a movable assembly and a fixed sliding rail which are in sliding fit, and a multi-stage elastic clamping assembly is arranged between the movable assembly and the fixed sliding rail. The manual input structure is in transmission connection with the movable assembly through the first pulley cable assembly; the balance weight assisting structure provides assisting power for the movable assembly through the second pulley cable assembly. A trainee keeps a supine posture, the angle of the bed body can be adjusted by pulling the handle, and the bed body is automatically clamped and positioned after the handle is loosened. The in-situ lying posture of a trainer is adjusted, off-position operation is not needed, and the problems that angle adjustment of an existing pilates bed is strenuous, and training continuity is affected are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of fitness equipment technology, and in particular to a weight-assisted Pilates bed with adjustable angle for reclining posture and its adjustment method. Background Technology

[0002] Pilates, as a comprehensive exercise method that integrates strength, flexibility, and core stability training, is widely used in rehabilitation medicine, fitness shaping, and sports injury prevention. The Pilates bench is one of the most important pieces of equipment in Pilates training. Through its movable slide and adjustable resistance system, it enables a variety of training movements and is particularly suitable for spinal rehabilitation, posture correction, and core muscle strengthening.

[0003] The adjustment of the bed angle has a significant impact on the training effect. Different tilt angles can change the relative relationship between the trainee's body and gravity, thereby adjusting the training intensity, conducting precise training for different muscle groups, and meeting the needs of different rehabilitation stages or training levels.

[0004] Currently, there are several patented technologies both domestically and internationally related to the angle adjustment of Pilates equipment and fitness beds. For example, Chinese patent CN211327999U discloses a Pilates exercise device with an adjustable leg lever. This patent achieves the adjustment of the leg lever angle through an adjusting sleeve and a locking assembly. The outer circumference of the adjusting sleeve has multiple adjusting grooves, which, together with elastic positioning pins, lock the angle, allowing the angle between the leg lever and the lying board to be adjusted to multiple levels such as 90°, 115.5°, 141°, and 166.5°. However, the angle adjustment in this patent mainly targets the leg lever component. When adjusting the angle, the trainee needs to stand on one side of the bed and operate it through a foot pedal unlocking mechanism, making it impossible to achieve in-situ adjustment while lying down.

[0005] Chinese patent CN102008803A discloses a tilting fitness device that uses a tilt angle adjustment component to adjust the user's body tilt angle for balance training. This patent uses a multi-support axis or universal axis adjustment device to change the tilt angle, but its design purpose is for standing balance training, not for adjusting the angle of a supine training bed.

[0006] Furthermore, US Patent 6634997 discloses an improved Pilates chair that adjusts resistance by changing the tension of a coil spring via an adjustable slider that slides along a control lever. US Patent 6652430 describes a back and waist exercise device that alters training intensity through angle adjustment of a pivot device and resistance components. While these patents address the adjustable functions of fitness equipment, none of them solve the technical problem of allowing trainees to easily adjust the inclination angle of the bed while lying supine.

[0007] However, existing Pilates bed technology still has the following shortcomings: Angle adjustment requires manual operation: Most existing Pilates beds use manual adjustment mechanisms, with the adjustment device located at the bottom or side of the bed. Trainees need to get off the bed to make adjustments, interrupting the training movements, disrupting the continuity of training, and posing safety hazards to special groups such as rehabilitation trainees, the elderly, or pregnant women.

[0008] Unlocking and adjustment operations are cumbersome: Existing angle locking mechanisms mostly adopt pin, bolt or quick-release pin structures, which require three steps of "unlocking-adjusting-locking". This is not only cumbersome, but also makes the bed unstable in the unlocked state, posing a safety risk.

[0009] Lack of or inconvenience in folding and storage: Existing Pilates beds are bulky (occupying 1.3-2.0 square meters). Although there are folding products, they suffer from problems such as complex folding mechanisms, laborious operation, limited volume reduction, and repeated folding affecting structural stability.

[0010] Insufficient overall structural stability: Existing Pilates beds are prone to shaking and abnormal noises during large-scale dynamic movements, and after long-term use, the connecting parts are prone to loosening, deformation, or even breakage. Most Pilates beds use independent bed frames and independent resistance training racks, connected by simple bolts or clips, resulting in poor overall rigidity. Summary of the Invention

[0011] The purpose of this invention is to provide a weight-assisted Pilates bed with adjustable angle for reclining posture and its adjustment method, so as to solve the technical problems in the prior art where the angle adjustment of the Pilates bed requires the trainee to leave their position, which is laborious and affects the continuity of training.

[0012] To achieve the above objectives, the present invention adopts the following technical solution: A reclining-adjustable weight-assisted Pilates bed includes a bed support end that can rotate relative to each other and a bed training section. The bed training section is equipped with an adjustable resistance training frame. The adjustable resistance training frame includes a frame body and a weight adjustment structure. The frame body is also equipped with a reclining-assisted integrated adjustment device. The reclining-assisted integrated adjustment device includes an adjustment execution structure, a manual input structure, and a weight assistance structure. The adjustment mechanism includes a slidingly fitted movable component and a fixed slide rail. The movable component is connected to the adjustment end of the training section of the bed. The fixed slide rail is mounted on the frame. A multi-stage elastic locking component is provided between the movable component and the fixed slide rail. The manual input structure includes a handle and a first pulley cable assembly, wherein the handle is connected to the movable component via the first pulley cable assembly. The counterweight assist structure includes a counterweight connecting wheel and a second pulley cable assembly. The counterweight connecting wheel is connected to the counterweight adjustment structure and is connected to the movable component via the second pulley cable assembly to provide assistance to the movable component.

[0013] Furthermore, the multi-stage elastic locking assembly includes multi-stage positioning holes and elastic positioning pins, with the multi-stage positioning holes disposed on the fixed slide rail and the elastic positioning pins disposed on the movable component.

[0014] Furthermore, the first pulley cable assembly includes a first rope and a horizontal pulley. The horizontal pulley is disposed on the movable component and is parallel to the axis of the elastic positioning pin. The first rope passes around the horizontal pulley and is connected to the movable component, so that the force exerted by the first rope on the movable component can be decomposed into an outward component along the axis of the elastic positioning pin and an upward component.

[0015] Furthermore, the movable component includes a first force-bearing rod, a second force-bearing rod, and a connecting frame. The first force-bearing rod is connected to a first pulley cable assembly, the second force-bearing rod is connected to a second pulley cable assembly, and the connecting frame is connected to the adjusting end and slidably fitted onto the fixed slide rail.

[0016] Furthermore, the connecting frame is provided with an unlocking channel, and the first force-bearing rod is movably connected in the unlocking channel, with its direction of movement consistent with the axial direction of the elastic positioning pin; the horizontal pulley is disposed on the second force-bearing rod, and the first rope passes through the horizontal pulley and the second force-bearing rod in sequence before being connected to the first force-bearing rod.

[0017] Furthermore, the second pulley cable assembly includes a second rope, which is wound in a double-strand manner at the counterweight connecting wheel, and the second rope is connected to the movable component via a chain and an elastic band.

[0018] Furthermore, the unlocking channel is provided with an electromagnetic control structure, which includes a first magnetic block and a second magnetic block. The second magnetic block is disposed on the first force rod, and the first magnetic block is disposed in the unlocking channel and is controlled by current. A control switch for controlling the power supply to and from the first magnetic block is disposed on the handle.

[0019] Furthermore, the reclining posture assistive integrated adjustment device is symmetrically arranged, and the manual input structure and the counterweight assist structure each have two sets.

[0020] The present invention also provides a method for adjusting the angle of the above-mentioned reclining adjustable weight-assisted Pilates bed, comprising the following steps: S1: The trainee sets the amount of assistance from the weight adjustment structure by adjusting the weight; S2: The trainee remains supine on the training section of the bed and pulls the handle; S3: The tension is transmitted to the movable component through the first pulley cable assembly, thereby unlocking the multi-stage elastic locking component; S4: With the assistance of the counterweight assist structure, the movable component drives the adjustment end to move along the fixed slide rail, thereby realizing the angle adjustment of the training part of the bed relative to the support end of the bed. S5: Release the handle, and the multi-level elastic locking component will automatically lock in place, maintaining the tilt angle of the training section of the bed.

[0021] Furthermore, in step S3, when the tension transmitted by the first pulley cable assembly acts on the movable component, force decomposition occurs. The force decomposition is divided into an unlocking component force moving outward along the axial direction of the multi-stage elastic locking assembly and an upward lifting component force. First, the unlocking component force disengages the multi-stage elastic locking assembly from unlocking, and then the lifting component force and the counterweight assist structure work together to move the movable component.

[0022] Compared with the prior art, the present invention has the following beneficial effects: Achieve in-situ lying posture adjustment: Trainees can adjust the angle without leaving the bed or standing, maintaining the continuity of the training posture and greatly improving training efficiency and experience.

[0023] Weight-assisted adjustment saves effort and is convenient: The adjustable resistance training frame provides upward assistance through the weight, which greatly reduces the adjustment force that originally needed to overcome the weight of the bed and the body. Trainees only need to apply a small pulling force to complete the adjustment, making the operation easier.

[0024] Mechanical design: By arranging the first pulley cable assembly, the pulling force applied by the trainee is decomposed into an outward unlocking component and an upward lifting component, realizing the sequential action of unlocking first and then adjusting. The operation logic is clear and natural, and no additional unlocking steps are required.

[0025] Stable and reliable positioning: It adopts a multi-level elastic locking component to maintain angle stability, automatically locks after release, and has a fault-tolerant function to automatically find the nearest locking position, reducing the difficulty of operation and improving safety.

[0026] High-safety adjustment mechanism: The adjustment process of this invention has multiple safety safeguards to ensure that the user will not encounter danger under any operating conditions. Specifically: High fault tolerance: Even if a first-time user is not familiar with the operation and pulls too far or too hard, the elastic positioning pin will automatically spring back into the multi-level positioning hole under the action of elasticity. The training part of the bed will only return to its original position or stay at the nearest stable angle position, and there will be no situation of uncontrolled falling. Passive safety mechanism: The elastic positioning pins of the multi-level elastic locking components are always in an elastic pre-tight state. As long as the handle is released, the elastic positioning pins will automatically find the nearest multi-level positioning hole and lock into place. There is no need for the trainee to actively lock them, thus avoiding safety hazards caused by forgetting to lock them. No risk of sudden drop: The counterweight assist structure continuously provides upward assistance. Even if the trainee suddenly lets go during the adjustment process, the training part of the bed will not drop quickly or rebound violently. Instead, it will return to its position smoothly or lock nearby under the combined action of the counterweight and the elastic locking components. Graded stable positioning: The multi-level positioning holes ensure that the bed can only stay at the preset stable angle, and there will be no unstable hovering state in the middle. Each angle position has been mechanically verified to ensure load-bearing safety. Dual-sided synchronous protection: The reclining posture assistive integrated adjustment device is symmetrically set on both sides, and the multi-level elastic locking components on both sides work simultaneously. Even if one side fails to lock in time due to abnormal conditions, the other side can still provide support, forming a double safety guarantee. Operational reversibility: The adjustment process can be stopped at any time, and the trainee can release the device at any time to return the system to a stable state. There is no need to worry about "not being able to stop halfway through the adjustment", which greatly reduces the psychological burden of operation and is especially suitable for special groups such as the elderly and rehabilitation trainees.

[0027] Integrated structural design: The reclining posture assist adjustment device is installed on the frame of the adjustable resistance training frame, forming a stable structural combination between the adjustable resistance training frame and the Pilates bed. This not only improves the overall stability and load-bearing capacity, but also makes full use of the resistance training frame's counterweight system to achieve the assist function, eliminating the need for additional counterweight devices. At the same time, thanks to the foldable design of the bed, the whole machine can be easily stored when not in use, saving a lot of storage space, making it particularly suitable for home or small training rooms.

[0028] Flexible implementation methods: It can adopt either a purely mechanical force disintegration unlocking method or an electromagnetic control unlocking method, providing options for different application scenarios and expanding the scope of application.

[0029] Coordinated operation with both hands: The symmetrically designed integrated adjustment device for lying down position assists the trainee's use with both hands, ensuring balanced force distribution and more stable and comfortable operation.

[0030] Optimized transmission structure: The second rope adopts a double-strand winding method and is connected by a chain and elastic belt, which effectively disperses the impact load, makes the adjustment process smoother, and extends the service life of the device.

[0031] The method is simple and efficient: the adjustment steps are clear, forming a complete closed loop from weight setting to angle locking, which is easy for trainees to master. The angle of the bed can be adjusted at any time according to training needs to achieve personalized training. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure in Example 1 where the bed and the adjustable resistance training frame are separated; Figure 2This is a schematic diagram of the structure of the training section of the bed in Example 1 after adjusting it to a certain angle; Figure 3 This is a schematic diagram of the Pilates bed after it has been fully folded in Example 1; Figure 4 This is a schematic diagram of the structure of the reclining assisted integrated adjustment device and the adjustable resistance training frame in Example 1. Figure 5 This is a partial structural diagram of the reclining posture assistive integrated adjustment device installed on the frame in Example 1; Figure 6 This is a partial structural schematic diagram of the reclining posture assistive integrated adjustment device in Example 1; Figure 7 for Figure 6 A magnified view of a section at point I; Figure 8 This is a schematic diagram of the structure of the active component in Example 1.

[0033] Figure label: Bed support end 10, bed training section 20, adjustable resistance training frame 30, reclining posture assistive integrated adjustment device 40, adjustment end 21, hinge frame 22, frame 31, counterweight adjustment structure 32, adjustment execution structure 41, manual input structure 42, counterweight assist structure 43, movable component 411, fixed slide rail 412, multi-stage elastic locking component 413, handle 421, first pulley cable assembly 422, counterweight connecting wheel 431, second... Pulley cable assembly 432, first force-bearing rod 4111, second force-bearing rod 4112, connecting frame 4113, unlocking channel 4114, multi-stage positioning hole 4131, elastic positioning pin 4132, first rope 4221, horizontal pulley 4222, adaptive tensioning wheel assembly 4223, adjustable pulley frame 4224, height adjustable assembly 4225, second rope 4321, second fixed pulley 4322, chain 4323, elastic belt 4324. Detailed Implementation

[0034] Example 1: This embodiment provides a reclining-adjustable, weight-assisted Pilates bed, aiming to solve the problems of traditional Pilates beds requiring off-position operation for angle adjustment, which is laborious and affects the continuity of training. The core innovation lies in the reclining-assisted integrated adjustment device 40, which integrates three main modules: an adjustment execution structure 41, a manual input structure 42, and a weight-assisted structure 43. The trainee can maintain a supine training posture and adjust the bed angle by pulling the handle 421 via a pulley mechanism. Simultaneously, the adjustable resistance training frame 30 provides upward assistance using its weight, significantly reducing the external force required for adjustment. The device uses a multi-stage elastic locking assembly 413 (pin hole structure) to maintain angle stability, and through the ingenious arrangement of the first pulley cable assembly 422, the force can be decomposed into an outward unlocking component and an upward lifting component, achieving a sequential action of unlocking first and then adjusting. This results in a convenient and labor-saving bed angle adjustment while maintaining an in-position reclining posture.

[0035] This embodiment mainly makes further improvements to the structure of the foldable Pilates bed, referring to... Figures 1-3 This type of Pilates bed typically includes a bed support end 10, a bed training section 20 with a slide, and an adjustable resistance training frame 30 to enhance training effectiveness. The bed training section 20 can rotate relative to the bed support end 10 to form a certain angle, allowing different trainees to adjust the support angle of the bed according to their own fitness level and stage training goals, achieving precise adaptation of movement difficulty, load intensity, and force application points.

[0036] However, current Pilates bed angle adjustment mechanisms typically require the trainee to operate from a stand-up position, meaning they must stand beside the bed and lift one end to rotate and adjust it. This operation is quite strenuous, and if the angle needs to be adjusted again during training, the training session must be interrupted, and the above-mentioned stand-up operation must be repeated. This repetitive process significantly affects the continuity and efficiency of training.

[0037] Therefore, refer to Figure 1 , Figure 2 This embodiment provides a reclining-adjustable weight-assisted Pilates bed. The angle of the training section 20 can be adjusted by the trainee pulling the handle 421 while in a supine position. The handle 421 is driven by a pulley mechanism and is linked to the existing adjustable resistance training frame 30. The counterweight on the frame provides a pre-set upward assist to the training section 20, greatly reducing the external force required for adjustment. This allows for easy and convenient adjustment of the bed angle while the trainee is in the same position.

[0038] Specifically, refer to Figure 1 , Figure 2The Pilates bed includes a hinged bed support end 10 and a bed training section 20. The bed training section 20 is equipped with an adjustable resistance training frame 30 to facilitate resistance training for the trainee. The adjustable resistance training frame 30 includes a frame 31 and a counterweight adjustment structure 32. The frame 31 is also equipped with a reclining assisted integrated adjustment device 40, which is the core design of this invention. It is hinged to the adjustment end 21 of the bed training section 20 so that the bed training section 20 can rotate relative to the bed support end 10 by pulling up the end. At the same time, it cooperates with the counterweight adjustment structure 32 to provide upward assistance for the trainee to manually pull up the adjustment end 21 with the help of the counterweight of the counterweight adjustment structure 32.

[0039] The reclining posture assistive integrated adjustment device 40 is symmetrically arranged (e.g., Figure 5 (as shown), and then combined with Figure 4 It includes: The adjustment execution structure 41, as a direct execution component that drives the adjustment end 21 to move upward, includes a movable component 411 and a fixed slide rail 412 that are longitudinally slidably connected. The movable component 411 is rotatably hinged to the adjustment end 21, and the fixed slide rail 412 is fixed to the frame 31. The adjustment end 21 is moved upward by pulling the movable component 411 along the fixed slide rail 412. A multi-stage elastic locking component 413 is also provided between the movable component 411 and the fixed slide rail 412 to keep the two in a stable and firm locking state after they have completed relative sliding. The manual input structure 42 serves as an input component for the trainee to apply force to pull up the adjustment end 21. It has two sets for use with the trainee's hands. Each set includes a handle 421 for easy application of force by the trainee. The handle 421 is connected to the movable component 411 through the first pulley cable assembly 422, and the movable component 411 is subjected to an upward force from the first pulley cable assembly 422. The counterweight assist structure 43 is used to provide a certain upward assistance to the adjustment end 21, reducing the external force required by the trainee. It has two sets to cooperate with two sets of manual input structures 42. Each set includes a counterweight connecting wheel 431. The lower end of the counterweight connecting wheel 431 is connected to the counterweight adjustment structure 32. It is also connected to the movable component 411 through the second pulley cable assembly 432, so that the movable component 411 is subjected to an upward force from the second pulley cable assembly 432.

[0040] Among them, reference Figure 4 The counterweight adjustment structure 32 adopts the existing counterweight plate stack structure. The trainee can adjust the amount of assistance provided by the counterweight assistance structure 43 by selecting different numbers of counterweight metal plates according to their own needs.

[0041] The working principle of the above scheme is as follows: First, the trainee applies a suitable weight to the counterweight connecting wheel 431 using the counterweight adjustment structure 32. Then, the force of this weight is transmitted to the movable component 411 through the second pulley cable assembly 432, providing some assistance for the movable component 411 to move the adjusting end 21 upward. Next, the trainee lies supine on the bed training section 20, raises their hand towards their head and grasps the handle 421 to pull. The pulling force applied by the trainee is then transmitted to the movable component 411 through the first pulley cable assembly 422, thereby causing the adjusting end 21, which is hinged to it, to move upward along the fixed slide rail 412. This causes the adjusting end 21 of the bed training section 20 to rotate relative to the bed support end 10, thus achieving angle adjustment. After the adjustment is completed, the movable component 411 is secured to the fixed slide rail 412 by the multi-stage elastic locking assembly 413 to stably maintain the tilted state.

[0042] Furthermore, the multi-stage elastic locking assembly 413 adopts a pin hole structure, which includes detachable and engaging multi-stage positioning holes 4131 (such as...). Figure 5 (as shown) and elastic positioning pin 4132 (as shown) Figure 7 As shown in the figure, the multi-level positioning holes 4131 are multiple and are evenly distributed longitudinally on the fixed slide rail 412, and the elastic positioning pins 4132 are provided on the movable component 411.

[0043] Once the multi-stage elastic locking assembly 413 is in a securely engaged state, if the angle needs to be adjusted again, the pin hole must first be axially disengaged to unlock it before longitudinal movement can proceed. Therefore, the first pulley cable assembly 422 also needs to exert an outward force along the pin hole axis on the movable assembly 411. For this reason, the first pulley cable assembly 422 is configured as follows in this embodiment.

[0044] Specifically, refer to Figure 6 The force F2 exerted by the first rope 4221 of the first pulley cable assembly 422 on the movable assembly 411 is inclined outward. This force F2 can generate an outward component force F21 along the axial direction of the elastic positioning pin 4132 and an upward component force F22 on the movable assembly 411 (e.g., Figure 7 As shown), the outward component force can be pulled out of the multi-stage positioning hole 4131 by the movable component 411 through the elastic positioning pin 4132, and the upward component force can be combined with other longitudinal forces to move up and down along the fixed slide rail 412.

[0045] Furthermore, to ensure that the outward and upward components of the force are in a sequential order, thus achieving the process of first pulling outwards and then moving up and down. (Reference) Figure 7 , Figure 8One of the pulleys in the first pulley cable assembly 422 is a horizontal pulley 4222, which is laterally fixed to the movable component 411 and parallel to the axis of the elastic positioning pin 4132. The first rope 4221 passes around the horizontal pulley 4222 and is then laterally connected to the movable component 411. Therefore, the most direct external force exerted by the first rope 4221 on the movable component 411 is outward along the axis of the elastic positioning pin 4132. Only after the elastic positioning pin 4132 disengages from the multi-stage positioning hole 4131 does the upward component of the force begin to drive the movable component 411 to move.

[0046] The above structure causes the forces exerted on the movable component 411 by the first pulley cable assembly 422 and the counterweight assist structure 43 to be not completely in the same direction. In order to simplify the control and transmission of the two forces by the movable component 411, the two forces are applied to two independent parts of the movable component 411 respectively, and then the two parts are connected as a whole, as follows.

[0047] refer to Figure 5 , Figure 8 The movable component 411 includes a first force-bearing rod 4111, a second force-bearing rod 4112, and a connecting frame 4113. The first force-bearing rod 4111 and the second force-bearing rod 4112 are arranged horizontally parallel to each other. The first force-bearing rod 4111 is connected to a first pulley cable assembly 422, and the second force-bearing rod 4112 is connected to a second pulley cable assembly 432. The connecting frame 4113 is connected via a hinged frame 22 (e.g., ...). Figure 1 , Figure 8 (As shown) is hinged to the adjusting end 21 and is also slidably sleeved on the fixed slide rail 412.

[0048] Furthermore, the first force-bearing rod 4111 is movably connected to the unlocking channel 4114 of the connecting frame 4113 (e.g., Figure 8 As shown in the figure, refer to Figure 7 Its direction of movement is consistent with the axial direction of the elastic positioning pin 4132; the second force-bearing rod 4112 is fixedly connected to the connecting frame 4113 (e.g., Figure 8 (as shown), reference Figure 7 The horizontal pulley 4222 is horizontally arranged on the second force-bearing rod 4112. The first rope 4221 passes horizontally through the horizontal pulley 4222 and the second force-bearing rod 4112 in sequence, and is then horizontally fixed to the first force-bearing rod 4111 to keep the first rope 4221 stable in the axial direction.

[0049] In conjunction with the above scheme, the specific working process of the bed training section 20 to achieve angle adjustment is as follows: refer to Figure 6 , Figure 7Pulling the handle 421 transmits the pulling force F2 to the first force-bearing rod 4111 via the first pulley cable assembly 422. This pulling force is decomposed into outward and upward components. The outward pulling force F21 pulls the elastic positioning pin 4132 out of the multi-stage positioning hole 4131 through the first force-bearing rod 4111, thus unlocking the device. At the same time, it further stretches the tension spring in the elastic positioning pin 4132, storing elastic potential energy. The upward component F22 and the upward assistance F1 provided by the counterweight assist structure 43 work together to drive the movable component 411 and the adjustment end 21 hinged to it to move upward along the fixed slide rail 412, thereby causing the adjustment end 21 to rotate relative to the bed support end 10, thus achieving angle adjustment. Once adjusted to the appropriate angle, releasing the handle 421 causes the elastic positioning pin 4132 to automatically spring into the corresponding multi-level positioning hole 4131 under its elastic action, achieving a stable engagement between the movable component 411 and the fixed slide rail 412, thereby ensuring the bed training section 20 remains stably at the tilt angle. Even if the elastic positioning pin 4132 is not aligned with the multi-level positioning hole 4131 when the handle is released, the elastic positioning pin 4132 can still slide slightly to the nearest multi-level positioning hole 4131 under the weight of the movable component 411 and the bed training section 20, and elastically engage with the multi-level positioning hole 4131. This automatic positioning function of the multi-level positioning hole 4131 makes the operation of this embodiment more tolerant of errors, greatly reducing the difficulty of operation and fatigue.

[0050] To further improve the present invention, this embodiment further optimizes the first pulley cable assembly 422, the second pulley cable assembly 432, and the multi-stage elastic locking assembly 413.

[0051] The specific structure of the first pulley cable assembly 422 is as follows.

[0052] refer to Figure 5 , Figure 6 The first pulley cable assembly 422, along the force transmission direction of the first rope 4221, further includes, in sequence, an adaptive tensioning pulley group 4223 and an adjustable pulley frame 4224, with the horizontal pulley 4222 located between the adjustable pulley frame 4224 and the movable assembly 411. Wherein: like Figure 6 As shown, the adaptive tensioning pulley assembly 4223 has two pulleys, with a first rope 4221 passing between the two pulleys. The two pulleys are connected to the height-adjustable assembly 4225 in a movable state. Therefore, during the adjustment of the angle of the training section 20 of the bed, the adaptive tensioning pulley assembly 4223 can move up and down together, thereby optimizing the rope wrap angle, avoiding excessively small rope angles that could affect the transmission of force, and also forming a movable pulley form, which makes it labor-saving.

[0053] like Figure 6As shown, the adjustable pulley frame 4224 also employs a height-adjustable component 4225, on which two fixed pulleys are symmetrically mounted. The fixed pulleys and the horizontal pulley 4222 are located in the same longitudinal section and at an angle diagonally upward and outward from the horizontal pulley 4222. Therefore, the trainee can adjust the fixed pulleys to a suitable position using the height-adjustable component 4225 according to the required angle, rope length, etc. of the training section 20 of the bed.

[0054] The height-adjustable component 4225 is an existing structure, so it is only described in a simple way. It consists of an adjusting rod with multiple adjusting holes, a sleeve with locking holes, and an elastic pin or a threaded tightening pin. For the above two settings with different positions and different fits, the specific structure of the two height-adjustable components 4225 can also be adjusted accordingly, but the main principle is similar. The height-adjustable component 4225 at the adaptive tensioning wheel assembly 4223 does not lock the elastic pin or threaded tightening pin on it.

[0055] The specific structure of the second pulley cable assembly 432 is as follows.

[0056] refer to Figure 5 , Figure 6 The second pulley cable assembly 432 includes a second rope 4321 and a plurality of second fixed pulleys 4322. The second rope 4321 is wound in a double-strand manner at the counterweight connecting wheel 431. One end of the second rope 4321 is connected to the second force rod 4112, and the other end is detachably connected to the frame 31.

[0057] The counterweight connecting wheel 431 is wrapped with a double-strand rope, so that the counterweight weight can be distributed by the two strands of rope. When the moving component 411 moves or stops suddenly, the tension change and impact load in the rope can be dispersed and absorbed by the two strands of rope, making the whole movement process smoother.

[0058] Further, refer to Figure 5 , Figure 6 The end of the second rope 4321 is connected to the second force-bearing rod 4112 in sequence via a chain 4323 and an elastic band 4324, for reference. Figure 8 The elastic band 4324 is in the form of a sheet, which wraps around the lower end of the second force-bearing rod 4112 and joins its two ends together to connect with the chain 4323. The connection point is located directly above the middle of the second force-bearing rod 4112.

[0059] In the above connection method, the chain 4323 is composed of multiple rigid links, each of which can be bent in multiple directions while still being able to stably and smoothly transmit the tension to the elastic band 4324. Compared with direct rope connection, the chain 4323 can eliminate torsional load and stress concentration, reducing the risk of rope twisting or local bending. The elastic band 4324 is then set and connected in a wrapping manner, so that a layer of high-friction, pressure-dispersing flexible pad can be formed on the surface of the second force-bearing rod 4112. Therefore, the second force-bearing rod 4112 is not prone to swaying during force-bearing activities, ensuring that the angle adjustment process of the bed training section 20 is smooth and stable. At the same time, it is ensured that the force exerted by the elastic band 4324 on the force-bearing component is always vertically upward, so that the counterweight assist structure 43 only needs to provide upward assistance to the moving component 411.

[0060] The multi-level elastic locking assembly 413 is further configured as follows.

[0061] To ensure stable engagement of the elastic positioning pin 4132 within the multi-level positioning hole 4131 and to prevent it from automatically disengaging due to the weight of the moving component 411 and the bed training section 20, in this embodiment, when the elastic positioning pin 4132 is engaged in the multi-level positioning hole 4131, the length of the engagement portion is at least 3 / 4 of the axial length of the multi-level positioning hole 4131. Furthermore, during engagement, the tension spring in the elastic positioning pin 4132 is slightly stretched to provide a certain preload. Correspondingly, the movable distance in the unlocking channel 4114 is greater than or equal to the engagement length of the elastic positioning pin 4132 and the multi-level positioning hole 4131.

[0062] Example 2 (The structure of this example is not shown in the figure): This embodiment is an alternative to the unlocking mechanism of Embodiment 1. Its core lies in functionally separating the outward and upward forces required for unlocking the multi-stage elastic locking assembly 413, achieving this through two independent structures. Specifically, an electromagnetic control structure replaces the mechanical unlocking method in Embodiment 1, which relies on the force decomposition of the first pulley cable assembly 422. The electromagnetic attraction between the first and second magnetic blocks is used to axially pull away the elastic positioning pin 4132, thus completing the unlocking action. The first pulley cable assembly 422 focuses on providing a vertically upward pulling force to achieve bed angle adjustment. The control switch is integrated into the handle 421. By pressing to activate the unlocking and releasing to deactivate the power and automatically reset, the unlocking and pulling operations are integrated into a single action, further simplifying the trainee's operation process and improving ease of use and operational accuracy.

[0063] This embodiment adjusts the method of unlocking the multi-level elastic locking component 413 in Embodiment 1, and uses two structures to achieve the required outward force and upward force, as detailed below.

[0064] An electromagnetic control structure is provided between the inner wall of the unlocking channel 4114 and the first force rod 4111. This structure is used to drive the first force rod 4111 to move outward along the axial direction of the elastic positioning pin 4132, thereby allowing the elastic positioning pin 4132 to disengage from the multi-stage positioning hole 4131. Correspondingly, the arrangement of the first pulley cable assembly 422 is also adjusted (including canceling the setting of certain components, adjusting the position of the pulley, etc.) so that the first rope 4221 acts vertically on the first force rod 4111.

[0065] The electromagnetic control structure includes a first magnetic block and a second magnetic block arranged opposite to each other. The second magnetic block is located in the first force-bearing rod 4111, and the first magnetic block is located in the unlocking channel 4114. It is controlled by current and has an integrated elastic recovery component. When the first magnetic block is energized, the electromagnetic force overcomes the elastic force of the elastic recovery component and attracts the second magnetic block and the first force-bearing rod 4111 to move. This causes the first force-bearing rod 4111 to drive the elastic positioning pin 4132 to disengage from the multi-level positioning hole 4131. When the power is turned off, the elastic recovery component separates the second magnetic block from the first magnetic block, thereby restoring the elastic potential energy of the elastic positioning pin 4132 to a movable state. The elastic positioning pin 4132 can automatically spring into the multi-level positioning hole 4131 to achieve a stable engagement between the two.

[0066] Furthermore, a control switch for controlling the power supply to and from the first magnetic block is located on the handle 421, so as to integrate the outward pulling and upward pulling operations into one component, thereby facilitating the operation of the trainee. The control switch turns on when pressed and turns off when released.

[0067] The above description is merely a specific example of the present invention and does not constitute any limitation on the present invention. Obviously, those skilled in the art, after understanding the content and principles of the present invention, may make various modifications and changes in form and detail without departing from the principles and structure of the present invention; however, these modifications and changes based on the spirit of the present invention are still within the scope of protection of the claims of the present invention.

Claims

1. A reclining-adjustable weight-assisted Pilates bed, comprising a rotatably hinged bed support end (10) and a bed training section (20), wherein the bed training section (20) is equipped with an adjustable resistance training frame (30), characterized in that... The adjustable resistance training frame (30) is equipped with a reclining posture assist integrated adjustment device (40) on its frame (31). The reclining posture assist integrated adjustment device (40) includes: an adjustment execution structure (41), including a movable component (411) and a fixed slide rail (412). The movable component (411) is connected to the adjustment end (21) of the bed training section (20). The fixed slide rail (412) is fixed to the frame (31). A multi-stage elastic locking component (413) is provided between the movable component (411) and the fixed slide rail (412); and a manual input structure (42), including a handle (421). The handle (421) is connected to the movable component (411) through a transmission mechanism. The counterweight assist structure (43) includes a counterweight connecting wheel (431), which is connected to the counterweight adjustment structure (32) of the adjustable resistance training frame (30) and is connected to the movable component (411) through a transmission mechanism to provide upward assistance to the movable component (411).

2. The Pilates bed according to claim 1, characterized in that: The transmission mechanism of the manual input structure (42) is the first pulley cable assembly (422), and the transmission mechanism of the counterweight assist structure (43) is the second pulley cable assembly (432); the multi-stage elastic locking assembly (413) includes multi-stage positioning holes (4131) and elastic positioning pins (4132), the multi-stage positioning holes (4131) are set on the fixed slide rail (412), and the elastic positioning pins (4132) are set on the movable assembly (411).

3. The Pilates bed according to claim 2, characterized in that: The first pulley cable assembly (422) includes a first rope (4221) and a horizontal pulley (4222). The horizontal pulley (4222) is disposed on the movable component (411) and parallel to the axial direction of the elastic positioning pin (4132). The first rope (4221) passes around the horizontal pulley (4222) and is connected to the movable component (411), so that the force of the first rope (4221) acting on the movable component (411) can be decomposed into an outward component along the axial direction of the elastic positioning pin (4132) and an upward component.

4. The Pilates bed according to claim 3, characterized in that: The movable component (411) includes a first force-bearing rod (4111), a second force-bearing rod (4112), and a connecting frame (4113). The first force-bearing rod (4111) is connected to the first pulley cable assembly (422), the second force-bearing rod (4112) is connected to the second pulley cable assembly (432), and the connecting frame (4113) is connected to the adjusting end (21) and slidably fitted onto the fixed slide rail (412).

5. The Pilates bed according to claim 4, characterized in that: The connecting frame (4113) is provided with an unlocking channel (4114), and the first force rod (4111) is movably connected in the unlocking channel (4114), and its direction of movement is consistent with the axial direction of the elastic positioning pin (4132); the horizontal pulley (4222) is set on the second force rod (4112), and the first rope (4221) passes through the horizontal pulley (4222) and the second force rod (4112) in sequence and is then connected to the first force rod (4111).

6. The Pilates bed according to any one of claims 2-5, characterized in that: The second pulley cable assembly (432) includes a second rope (4321), which is wound in a double-strand manner at the counterweight connecting wheel (431), and is connected to the movable component (411) via a chain (4323) and an elastic band (4324).

7. The Pilates bed according to claim 5, characterized in that: The unlocking channel (4114) is provided with an electromagnetic control structure, which includes a first magnetic block and a second magnetic block. The second magnetic block is disposed on the first force rod (4111), and the first magnetic block is disposed in the unlocking channel (4114) and controlled by current. The control switch for controlling the power on and off of the first magnetic block is disposed on the handle (421).

8. The Pilates bed according to claim 1, characterized in that: The reclining posture assist integrated adjustment device (40) is symmetrically arranged, and the manual input structure (42) and the counterweight assist structure (43) each have two sets.

9. A method for adjusting the angle using the Pilates bed according to claim 1, characterized in that, Includes the following steps: S1: The trainee sets the amount of assistance from the weight-assisting structure (43) through the weight adjustment structure (32); S2: The trainee remains in a supine position on the training section of the bed (20) and pulls the handle (421). S3: The tension is transmitted to the movable component (411) through the first pulley cable assembly (422), thereby unlocking the multi-stage elastic locking assembly (413); S4: Under the assistance of the counterweight assist structure (43), the movable component (411) drives the adjustment end (21) to move along the fixed slide rail (412) to realize the angle adjustment of the bed training part (20) relative to the bed support end (10); S5: Release the handle (421), and the multi-level elastic locking component (413) automatically locks in place, maintaining the tilt angle of the bed training section (20).

10. The method according to claim 9, characterized in that: In step S3, when the tension transmitted by the first pulley cable assembly (422) acts on the movable component (411), the force is decomposed into an unlocking component and an upward lifting component along the axial direction of the multi-stage elastic locking assembly (413). First, the unlocking component is used to disengage the multi-stage elastic locking assembly (413), and then the lifting component and the counterweight assist structure (43) work together to move the movable component (411).

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