Magnetic climbing device for feet and use method of magnetic climbing device

Abstract

The invention relates to the technical field of climbing devices, in particular to a foot magnetic climbing device and a using method thereof, the foot magnetic climbing device comprises a foot front pedal, a first permanent magnet group and a second permanent magnet group which are fixedly arranged at the front end of the foot front pedal and are used for being adsorbed on an iron climbing surface, and a first lever unit and a second lever unit which are arranged on the two side surfaces of the foot front pedal; and the first lever unit and the second lever unit are rotationally connected with the front foot pedal through a pin shaft. The lever support is driven to rotate through downward pressing and lifting of the heels of a user, and the lever support is switched between the working position and the non-working position under the cooperation of the tension spring and the limiting block. At the working position, all the permanent magnets are tightly adsorbed on a climbing surface to generate strong magnetic force; and in a non-working position, the cam pushes the lower permanent magnet, and meanwhile, the top block pushes the upper permanent magnet, so that the permanent magnets are separated from the climbing surface together, and easy struggling is realized. The climbing device can be controlled to be switched between a firm adsorption state and an easy separation state only by means of fine transfer of the gravity center of the climbing device and conventional rotation of ankles.

Description

Technical Field

[0001] This invention relates to the field of climbing device technology, and in particular to a foot-operated magnetic climbing device and its method of use. Background Technology

[0002] In industrial fields such as ship repair, large storage tank inspection, and power tower maintenance, workers frequently need to climb large iron or steel structures. Magnetic climbing devices are one of the key pieces of equipment to ensure the safety and efficiency of such high-altitude operations. Existing magnetic climbing devices are mainly divided into two categories according to their working principle: electromagnet adsorption type and permanent magnet adsorption type.

[0003] Electromagnetic adsorption climbing devices generate a magnetic field through an energized coil. Their advantage lies in the precise control of the adsorption force via current, and the ability to easily detach from the climbing surface when power is cut off or a reverse current is applied. However, their inherent drawbacks are also significant: First, they heavily rely on a continuous and stable power supply, whether using a towed cable or an internal battery, which greatly limits their applicability and mobility in the wild, at high altitudes, or in complex environments. Second, their electrical control system (including power supply, switches, wiring, etc.) is complex, has a relatively high failure rate, and poses safety hazards in harsh industrial environments such as humid or explosive conditions. Finally, the entire system is typically heavy, increasing the physical burden on the user.

[0004] Permanent magnet climbing devices utilize high-performance permanent magnet materials such as neodymium iron boron, making them an attractive alternative due to their lack of electricity requirements, simple structure, and high safety. However, the extremely strong magnetic attraction generated by high-performance permanent magnets presents a core challenge: how to efficiently and effortlessly overcome this attraction with the limited force and range of motion provided by the human foot when the user needs to lift their foot to move, thus achieving rapid separation of the climbing device from the iron surface. Some existing permanent magnet climbing devices attempt to alter the magnetic field distribution using mechanical structures such as lever shifting and rotating magnetic circuits. However, these structures often suffer from cumbersome operation, incomplete switching, easy jamming of mechanisms, or excessive weight and size. They fail to achieve seamless and intuitive coordination with the natural foot movements (stepping and lifting), resulting in laborious operation, low efficiency, and even inability to quickly detach in emergencies, posing safety risks.

[0005] Therefore, there is an urgent need in this field for a design of a foot-mounted magnetic climber that can retain all the advantages of permanent magnets, such as being power-free and highly reliable, while also using a clever and efficient purely mechanical structure to transform the user's natural foot movements into reliable switching control of strong magnetic attraction, thereby achieving the effect of being firmly attached and easy to separate. Summary of the Invention

[0006] The purpose of this invention is to provide a cleverly designed, intuitively operated, effortless to separate, and safe and reliable magnetic foot climber. This climber uses a lever-cam-top block composite mechanism to directly convert the pressing and lifting motions of the heel into switching between the adsorption state between the permanent magnet assembly and the climbing surface, thus solving the problem of difficult separation in permanent magnet climbers.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a foot magnetic climbing device, comprising a front foot pedal, a first permanent magnet assembly and a second permanent magnet assembly fixedly disposed at the front end of the front foot pedal for adsorption onto an iron climbing surface, and a first lever unit and a second lever unit disposed on both sides of the front foot pedal; the first lever unit and the second lever unit are both rotatably connected to the front foot pedal via a pin; the first lever unit includes a first tension spring, a first limiting block disposed on the front foot pedal, a first lever bracket rotatably connected to the front foot pedal, and a first cam located at the front end of the first lever bracket, with one end of the first tension spring connected to the front foot pedal and the other end connected to the first lever bracket and located at the end away from the first cam; the second lever unit includes a second tension spring, a first limiting block disposed on the front foot pedal, a first lever bracket fixedly disposed at the front end of the front foot pedal, and a first lever unit located at the front end of the first lever bracket; the second lever unit includes a second tension spring, a first lever bracket fixedly disposed on the front end of the front foot pedal, a first lever bracket fixedly disposed on the front end of the front foot pedal, and a first lever unit located at the front end of the first lever bracket ... The system includes a second limiting block on the front pedal, a second lever bracket rotatably connected to the front pedal, and a second cam located at the front end of the second lever bracket. One end of a second tension spring is connected to the front pedal, and the other end is connected to the second lever bracket and located away from the second cam. The first and second limiting blocks are symmetrically arranged on both sides of the front pedal to limit the rotation angle of the corresponding lever brackets, so that the corresponding lever brackets have working and non-working positions. When the first and second lever brackets are in the working position, the first and second permanent magnet groups can be tightly attracted to the iron climbing surface. When the first and second lever brackets are in the non-working position, the first and second permanent magnet groups can be easily separated from the iron climbing surface.

[0008] Preferably, the first permanent magnet group includes a first permanent magnet and a second permanent magnet arranged from top to bottom; the second permanent magnet group includes a third permanent magnet and a fourth permanent magnet arranged from top to bottom; the first permanent magnet group and the second permanent magnet group are respectively provided with a first top block and a second top block; the first top block is located above the first permanent magnet, and the second top block is located above the third permanent magnet.

[0009] Preferably, the first, second, third, and fourth permanent magnets are all ring-shaped and are locked to the foot pedal by screws; the first and second top blocks are locked to the foot pedal by screws.

[0010] Preferably, the foot pedal is connected to the rear end of the first lever bracket and the second lever bracket.

[0011] Preferably, the foot pedal is equipped with an ankle strap for securing the user's foot.

[0012] Preferably, the front inner side of the foot pedal is provided with a toe plate that provides a support point for the user's instep.

[0013] Preferably, the first limiting block has a first limiting surface and a second limiting surface, and the second limiting block has a third limiting surface and a fourth limiting surface. The first limiting surface and the second limiting surface correspond to the working position and non-working position of the first lever support; the third limiting surface and the fourth limiting surface correspond to the working position and non-working position of the second lever support.

[0014] A method for using a foot-operated magnetic climber includes the following steps. S1: Adsorption stage, the foot magnetic climber is placed on the iron climbing surface. The user presses down with their foot, driving the first lever bracket and the second lever bracket to overcome the restoring torque of the first and second tension springs, rotating from the non-working position to the working position limited by the first and second limiting blocks respectively; at this time, the first cam moves away from the iron climbing surface, and the second cam moves away from the iron climbing surface, so that the permanent magnets in the first permanent magnet group and the second permanent magnet group are tightly adsorbed onto the iron climbing surface. S2: Holding phase. After step S1, the user maintains the downward pressing posture of the feet, the first lever support and the second lever support are stabilized in the working position, and the first permanent magnet group and the second permanent magnet group provide continuous maximum magnetic attraction force to support the user in climbing. S3: Lift your foot and move to the next adsorption point; when you need to move your foot, lift your heel, and the reset torque of the first and second tension springs drives the first and second lever brackets to rotate from the working position to the non-working position; during this process, the first cam pushes the second permanent magnet in the first permanent magnet group, and the second cam pushes the fourth permanent magnet in the second permanent magnet group; at the same time, the first and second top blocks abut against the iron climbing surface and push the first and third permanent magnets in the first and second permanent magnet groups respectively, so that a gap is created between the first and second permanent magnet groups and the iron climbing surface, the magnetic adsorption force is significantly weakened, thereby realizing the easy separation of the climber.

[0015] Preferably, in the S1 adsorption stage, the user presses down on their heel, which drives the first lever bracket and the second lever bracket to rotate simultaneously to the working position via the foot pedal.

[0016] Preferably, in step S3, when the user lifts their heel, the instep acts on the toe plate, using the toe plate as a fulcrum to exert force and assist in lifting the heel.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows: This invention creatively combines the magnetic separation process with the most natural heel-pressing and heel-lifting posture of human walking. Users require no special training, no additional upper limb manipulation, or large body movements; they can reliably control the climbing device between secure attachment and easy separation simply by subtly shifting their center of gravity and rotating their ankles. This ergonomic design significantly reduces the operator's physical exertion and psychological burden, while improving climbing efficiency.

[0018] The core actuation mechanism of the entire device consists only of basic mechanical components such as lever supports, tension springs, limit blocks, and cams. It eliminates traditional circuits and electronic control components, thus avoiding the power supply problems, control failures, and safety restrictions associated with electromagnetic solutions in certain special environments. The purely mechanical structure possesses extremely high inherent reliability and environmental adaptability, capable of withstanding harsh working environments such as impact, vibration, high and low temperatures, humidity, and corrosive atmospheres.

[0019] This invention utilizes a detachment structure formed by a cam pushing the lower permanent magnet and a top block pushing the upper permanent magnet. In the non-operating state, this structure almost simultaneously and effectively disrupts the magnetic circuit between the permanent magnet and the iron plate. This ensures that even when the permanent magnet provides a strong attraction force, the user only needs to apply a small lifting force to break free, solving the problem of easy attraction but difficult separation in traditional permanent magnet climbers.

[0020] In operation, the lever support is stabilized in a precise working position by the preload of the tension spring and the mechanical limit of the limiting block. This ensures that the permanent magnet assembly always maintains a tight fit with the climbing surface with the maximum area, providing a continuous, stable, and powerful adsorption force. This effectively prevents slippage accidents caused by accidental loosening of the device or fluctuations in adsorption force during climbing, providing a solid safety guarantee for workers at heights. Attached Figure Description

[0021] Figure 1 A top view of a foot-mounted magnetic climbing device is provided for this invention; Figure 2 This is a schematic diagram of the working structure of the magnetic foot climber of the present invention. Figure 3 This is a schematic diagram of the foot magnetic climber of the present invention in a free state; Figure 4 This is a schematic diagram of the limiting block structure of the foot magnetic climber of the present invention; Figure 5 This is a schematic diagram showing the second lever bracket and the limiting block engaging in the working state of the foot magnetic climber of the present invention. Figure 6 This is a schematic diagram showing the engagement of the second lever bracket and the limiting block in the free state of the foot magnetic climber of the present invention. Figure 7This is a schematic diagram of the first lever bracket and the limiting block cooperating in the working state of the foot magnetic climber of the present invention; Figure 8 This is a three-dimensional structural diagram of the foot magnetic climber of the present invention during use; Figure 9 for Figure 8 An enlarged diagram of the magnetic climbing device for the feet; Figure 10 for Figure 4 A three-dimensional structural diagram of the magnetic climbing device for the feet from another angle; Figure 11 This is a flowchart illustrating the use of the magnetic foot climber of the present invention. Explanation of reference numerals in the attached drawings: 1. Forefoot pedal; 11. Toeboard; 2. First permanent magnet assembly; 21. First permanent magnet; 22. Second permanent magnet; 3. First top block; 4. Second permanent magnet assembly; 41. Third permanent magnet; 42. Fourth permanent magnet; 5. Second top block; 6. Rear foot pedal; 61. Strap; 7. First lever unit; 71. First tension spring; 72. First limiting block; 721. First limiting surface; 722. Second limiting surface; 73. First... Lever support; 731, First rod; 732, Second rod; 733, First tension spring connecting hole; 74, First cam; 8, Pin; 9, Second lever unit; 91, Second tension spring; 92, Second limiting block; 921, Third limiting surface; 922, Fourth limiting surface; 93, Second lever support; 931, Third rod; 932, Fourth rod; 933, Second tension spring connecting hole; 94, Second cam; 10, Iron climbing surface; 101, Foot. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] To address the problems mentioned in the background art, the purpose of this invention is to provide a design for a lever-type magnetic foot climber; it includes a front foot pedal 1, a first permanent magnet group 2 and a second permanent magnet group 4 fixedly disposed at the front end of the front foot pedal 1 for adsorption onto an iron climbing surface 10, and a first lever unit 7 and a second lever unit 9 disposed on both sides of the front foot pedal 1; the first permanent magnet group 2 and the second permanent magnet group 4 generate an adsorption force, which is the power source for realizing the climbing function; the inner front end of the front foot pedal 1 is provided with a toe plate 11 that provides a force support point for the user's instep; when it is necessary to lift the foot to separate, the user can intentionally use the instep to press against the toe plate 11; at this time, the user's foot itself becomes a lever with the toe plate 11 as the fulcrum, which can more easily and effortlessly lift the heel, thereby more effectively initiating the separation step. The rear foot pedal 6 is connected to the first lever unit 7 and the second lever unit 9; the rear foot pedal 6 is provided with an ankle strap 61 for binding the user's ankle. The first lever unit 7 and the second lever unit 9 are both rotatably connected to the foot pedal 1 via a pin 8. The first lever unit 7 includes a first tension spring 71, a first limiting block 72 disposed on the foot pedal 1, a first lever bracket 73 rotatably connected to the foot pedal 1, and a first cam 74 located at the front end of the first lever bracket 73. One end of the first tension spring 71 is connected to the foot pedal 1, and the other end is connected to the first lever bracket 73 and located at the end away from the first cam 74. The second lever unit 9 includes a second tension spring 91, a second limiting block 92 disposed on the foot pedal 1, a second lever bracket 93 rotatably connected to the foot pedal 1, and a second cam 94 located at the front end of the second lever bracket 93. One end of the second tension spring 91 is connected to the foot pedal 1, and the other end is connected to the second lever bracket 93 and located at the end away from the second cam 94. The first tension spring 71 and the second tension spring 91 provide the driving force to return the lever support to the non-working position. When the user presses down on the heel, the first tension spring 71 and the second tension spring 91 are stretched and store elastic potential energy. When the heel is lifted and the external stepping force is removed, the stored potential energy is immediately released and converted into a restoring torque that drives the lever support to rotate, which is consistent with the direction of the user's heel lifting. This is the key to achieving rapid and automatic separation. The first limiting block 72 and the second limiting block 92 are symmetrically arranged on both sides of the foot pedal 1 to limit the rotation angle of the corresponding lever support, so that the corresponding lever support has a working position and a non-working position. When the first lever support 73 and the second lever support 93 are in the working position, the first permanent magnet group 2 and the second permanent magnet group 4 can be tightly attracted to the iron climbing surface 10. When the first lever support 73 and the second lever support 93 are in the non-working position, the first permanent magnet group 2 and the second permanent magnet group 4 can be easily separated from the iron climbing surface 10.The first limiting block 72 has a first limiting surface 721 and a second limiting surface 722, and the second limiting block 92 has a third limiting surface 921 and a fourth limiting surface 922. The first limiting surface 721 and the second limiting surface 722 correspond to the working position and non-working position of the first lever support 73; the third limiting surface 921 and the fourth limiting surface 922 correspond to the working position and non-working position of the second lever support 93.

[0024] The first permanent magnet group 2 includes a first permanent magnet 21 and a second permanent magnet 22 arranged from top to bottom; the second permanent magnet group 4 includes a third permanent magnet 41 and a fourth permanent magnet 42 arranged from top to bottom; the first permanent magnet group 2 and the second permanent magnet group 4 are respectively provided with a first top block 3 and a second top block 5; the first top block 3 is located above the first permanent magnet 21, and the second top block 5 is located above the third permanent magnet 41. Optionally, the first permanent magnet 21, the second permanent magnet 22, the third permanent magnet 41 and the fourth permanent magnet 42 are all in the shape of rings and are locked to the foot pedal 1 by screws; the first top block 3 and the second top block 5 are locked to the foot pedal 1 by screws. The height of the first top block 3 and the second top block 5 is slightly higher than that of the permanent magnet above (such as the first permanent magnet 21 and the third permanent magnet 41). In the adsorption state, there is a gap between the first top block 3 and the second top block 5 and the iron climbing surface 10. When the user lifts his foot, the entire front foot pedal 1 tilts up with the front end as the fulcrum. The first top block 3 and the second top block 5 will first come into contact with the iron climbing surface 10 and be blocked. As the user continues to lift his foot, the fixed first top block 3 and the second top block 5, relative to the moving front foot pedal 1, are equivalent to a downward protrusion, which abuts against the permanent magnet above (such as the first permanent magnet 21 and the third permanent magnet 41) and pushes it away from the iron climbing surface 10.

[0025] like Figure 1 , Figure 2 , Figure 3As shown, the foot-operated magnetic climbing device includes a front foot pedal 1, a first permanent magnet assembly 2 and a second permanent magnet assembly 4 disposed on the front end of the front foot pedal 1, and a first lever unit 7 and a second lever unit 9 disposed on both sides of the front foot pedal 1. The first lever unit 7 and the second lever unit 9 are spaced apart in the Y direction, and the front foot pedal 1 and the rear foot pedal 6 are spaced apart in the X direction. The first lever bracket 73 and the second lever bracket 93 in the first lever unit 7 and the second lever unit 9 are connected to the front foot pedal 1 through a pin 8 passing through the front foot pedal 1. The rear foot pedal 6 is provided with a strap 61 that limits the ankle position of the foot 101. The first permanent magnet assembly 2 includes a first permanent magnet 21 and a second permanent magnet 22 disposed from top to bottom in the Z direction. A first top block 3 is provided above the first permanent magnet 21. The first top block 3 is fixedly connected to the front end of the front foot pedal 1, and the first top block 3 can abut against the iron climbing surface 10 when the foot is lifted, helping the first permanent magnet 21 to disengage from the iron climbing surface 10. The second permanent magnet assembly 4 includes a third permanent magnet 41 and a fourth permanent magnet 42 arranged from top to bottom in the Z direction; a second top block 5 above the third permanent magnet 41; and the second top block 5 is fixedly connected to the front end of the foot pedal 1. The second top block 5, when the foot is lifted, can abut against the iron climbing surface 10, helping the third permanent magnet 41 to disengage from the iron climbing surface 10. The first lever unit 7 also includes a first tension spring 71 connected at both ends to the foot pedal 1 and the first lever bracket 73 respectively, and a first limiting block 72 fixedly connected to the side of the foot pedal 1 and located above the first lever bracket 73. The first lever unit 7 and the second lever unit 9 transmit the stepping or lifting action of the foot to the first cam 74 and the second cam 94.

[0026] Combination Figure 4 As shown, the first limiting block 72 includes a first limiting surface 721 and a second limiting surface 722; the inclination angle of the second limiting surface 722 is γ, and the inclination angle of the first limiting surface 721 is ω; the first lever support 73 includes a first rod 731 and a second rod 732; the angle between the first rod 731 and the second rod 732 is... The first cam 74 is connected to the end of the second rod 732 and can abut against the iron climbing surface 10 when the foot is lifted, helping the second permanent magnet 22 to disengage from the iron climbing surface 10. The first tension spring connecting hole 733 on the first rod 731 is used to connect one end of the first tension spring 71. Figure 5 As shown, the second lever unit 9 includes a second tension spring 91 connected at both ends to the foot pedal 1 and the second lever bracket 93 respectively; a second limiting block 92 is fixedly connected to the side of the foot pedal 1 and located above the second lever bracket 93; the second limiting block 92 includes a third limiting surface 921 and a fourth limiting surface 922; the inclination angle of the third limiting surface 921 is ω, and the inclination angle of the fourth limiting surface 922 is γ; the second lever bracket 93 includes a third rod 931 and a fourth rod 932; the angle between the third rod 931 and the fourth rod 932 is... The second cam 94 is connected to the end of the fourth rod 932 and can abut against the iron climbing surface 10 when the foot is lifted, helping the fourth permanent magnet 42 to disengage from the iron climbing surface 10. The second tension spring connecting hole 933 on the third rod 931 is used to connect one end of the second tension spring 91.

[0027] Combination Figure 3 , Figure 5 , Figure 6 , Figure 7 As shown, the rotation angle of the foot pedal 1 relative to the iron climbing surface 10 is β, and the rotation angle of the foot pedal 1 relative to the horizontal plane is also β. The rotation angle of the first rod 731 and the third rod 931 relative to the horizontal plane is θ. The tilt angle of the first limiting surface 721 and the third limiting surface 921 is ω, and the tilt angle of the second limiting surface 722 and the fourth limiting surface 922 is γ. Since the fourth limiting surface 922 cooperates with the shorter fourth rod 932 and the third limiting surface 921 cooperates with the longer third rod 931, γ needs to be greater than ω. The overall configuration and lever arm ratio of the lever support are determined, affecting the conversion relationship between the degree of effort-saving operation and the cam stroke. When the user lifts his foot, the angle β of the rotation of the foot pedal 1 around the contact point between its front end and the iron climbing surface 10 is reflected by the natural height of the user's foot. The included angle θ reflects the actual rotation amplitude of the lever support during the stepping and lifting process. ω ensures that when the user lifts his foot to a specific angle β, the lever support can accurately and reliably reach the non-working position under the action of the tension spring, and ensures that the cam (first cam 74, second cam 94) has sufficient stroke to effectively lift the permanent magnet (second permanent magnet 22, fourth permanent magnet 42) below, achieving reliable separation. The tilt angle of the second limiting surface 722 and the fourth limiting surface 922 is designed to be γ, so that when the lever support is in the non-working position, it can fit with the first limiting surface 721 and the third limiting surface 921. The value of the angle γ is determined by the gap (or pre-tightening amount) between the cam and the permanent magnet in the non-working position required by the design. The range of α is 120~150°, preferably 130°; when the climber is in the working position adsorbed state, β=0°; when in the non-working position separated state, the maximum angle of β is 24°, and β will vary between 0-24°; θ varies with β and lever position, the range of θ is 0° in the working position, and the maximum value of θ is 40° in the non-working state; the magnitude of ω is the difference between the maximum value of θ (40°) in the non-working position and the maximum value of β (24°) in the non-working position, which is 16°; the range of γ is 25-45°, preferably 40°. The first permanent magnet 21, the second permanent magnet 22, the third permanent magnet 41 and the fourth permanent magnet 42 can be selected as model N48; the first tension spring 71 and the second tension spring 91 are model d2-D14-L100.

[0028] When the second lever 732 is in contact with the second limiting surface 722 and the fourth lever 932 is in contact with the fourth limiting surface 922, the first lever support 73 and the second lever support 93 are restricted to the working positions of the first limiting block 72 and the second limiting block 92. When the first lever 731 is in contact with the first limiting surface 721 and the third lever 931 is in contact with the third limiting surface 921, the first lever support 73 and the second lever support 93 are restricted to the non-working positions of the first limiting block 72 and the second limiting block 92. The switching between the working and non-working positions of the lever support can control the strength of the magnetic climbing device's attraction to the iron climbing surface 10. When the tension spring is in a free state, the lever support is in a non-working position, the four permanent magnets are not completely in contact with the iron climbing surface 10, and the magnetic attraction is weak.

[0029] like Figure 8 , Figure 9 , Figure 10 As shown, the toe plate 11 is located inside the foot pedal 1, providing a fulcrum for foot rotation. The first lever bracket 73 and the second lever bracket 93 change the strength of the attraction force of the first permanent magnet group 2 and the second permanent magnet group 4 to the climbing iron climbing surface 10 when the first tension spring 71 and the second tension spring 91 are reset and the operator steps on it. Figure 8 When the first tension spring 71 and the second tension spring 91 are in the stretched state, the first lever support 73 and the second lever support 93 are in the working position of the limiting block, and the first permanent magnet 21, the second permanent magnet 22, the third permanent magnet 41 and the fourth permanent magnet 42 are completely attached to the iron climbing surface 10, with the strongest magnetic attraction. The two sides of the foot pedal 6 are connected to the two ends of the first lever support 73 and the second lever support 93 respectively; when the operator lifts the heel of the foot 101, the first tension spring 71 and the second tension spring 91 are in the free state, and the first permanent magnet 21, the second permanent magnet 22, the third permanent magnet 41 and the fourth permanent magnet 42 are not all attached to the iron climbing surface 10, the magnetic attraction is weakened, and it is convenient to lift the foot and move upward.

[0030] A method for using a foot-operated magnetic climber includes the following steps. S1: Adsorption stage. The foot magnetic climber is placed on the iron climbing surface 10. The user presses down with their foot, driving the first lever bracket 73 and the second lever bracket 93 to overcome the restoring torque of the first tension spring 71 and the second tension spring 91, rotating from the non-working position to the working position limited by the first limiting block 72 and the second limiting block 92 respectively. At this time, the first cam 74 moves away from the iron climbing surface 10, and the second cam 94 moves away from the iron climbing surface 10, so that the permanent magnets in the first permanent magnet group 2 and the second permanent magnet group 4 are tightly adsorbed to the iron climbing surface 10. The user drives the first lever bracket 73 and the second lever bracket 93 to rotate simultaneously to the working position by pressing down with their heel and through the foot pedal 6.

[0031] S2: Holding phase. After step S1, the user maintains the downward pressing posture of the feet, and the first lever support 73 and the second lever support 93 are stabilized in the working position. The first permanent magnet group 2 and the second permanent magnet group 4 provide continuous maximum magnetic attraction force to support the user in climbing. S3: Lift your foot and move to the next adsorption point; when you need to move your foot, lift your heel, and the reset torque of the first tension spring 71 and the second tension spring 91 drives the first lever bracket 73 and the second lever bracket 93 to rotate from the working position to the non-working position; during this process, the first cam 74 pushes the second permanent magnet 22 in the first permanent magnet group 2, and the second cam 94 pushes the fourth permanent magnet 42 in the second permanent magnet group 4; at the same time, the first top block 3 and the second top block 5 abut against the iron climbing surface 10 and push the first permanent magnet 21 and the third permanent magnet 41 in the first permanent magnet group 2 and the second permanent magnet group 4 respectively, so that a gap is created between the first permanent magnet group 2 and the second permanent magnet group 4 and the iron climbing surface 10, and the magnetic adsorption force is significantly weakened, thereby realizing the easy separation of the climber. When the user lifts his heel, the instep acts on the toe pressure plate 11, and the toe pressure plate 11 is used as a fulcrum to exert force to assist the heel in lifting.

[0032] In step S3, the first cam 74 pushes the second permanent magnet 22 in the first permanent magnet group 2, causing the second permanent magnet 22 to separate from the iron climbing surface 10; the second cam 94 pushes the fourth permanent magnet 42 in the second permanent magnet group 4, causing the fourth permanent magnet 42 to separate from the iron climbing surface 10; at the same time, the first top block 3 abuts against the iron climbing surface 10, pushing the first permanent magnet 21 in the first permanent magnet group 2 to separate it from the iron climbing surface 10; the second top block 5 abuts against the iron climbing surface 10, pushing the third permanent magnet 41 in the second permanent magnet group 4 to separate it from the iron climbing surface 10.

[0033] In summary, the magnetic climbing device for feet provided by this invention utilizes a mechanical mechanism of levers, cams, and top blocks. The pressing and lifting motion of the heel drives the first lever support 73 and the second lever support 93 to move between two extreme positions defined by the first and second limiting blocks 72 and 92. Furthermore, through the pushing action of the first cam 74 and the second cam 94 at the ends of the first and second lever supports 73 and 93, and the pushing action of the first and second top blocks 3 and 5, the device efficiently and reliably switches between two states: a tight fit (generating strong attraction) and a gapped separation (allowing easy escape) between the first permanent magnet assembly 2 and the second permanent magnet assembly 4 and the iron climbing surface 10. This design unifies the high reliability and strong attraction of permanent magnets with extreme convenience and effortlessness in operation, resulting in a relatively safe, efficient, and durable magnetic climbing solution.

Claims

1. A magnetic climbing device for feet, characterized in that: The front foot pedal (1), a first permanent magnet group (2) and a second permanent magnet group (4) fixedly disposed at the front end of the front foot pedal (1) for adsorption onto the iron climbing surface (10), and a first lever unit (7) and a second lever unit (9) disposed on both sides of the front foot pedal (1); the first lever unit (7) and the second lever unit (9) are rotatably connected to the front foot pedal (1) by a pin (8); the first lever unit (7) includes a first tension spring (71), a first limiting block (72) disposed on the front foot pedal (1), a first lever bracket (73) rotatably connected to the front foot pedal (1), and a first cam (74) located at the front end of the first lever bracket (73), one end of the first tension spring (71) is connected to the front foot pedal (1), and the other end is connected to the first lever bracket (73) and located away from the first cam (74); the second lever unit (9) includes a second tension spring (91), a second limiting block (91) disposed on the front foot pedal (1), and a second limiting block (92) rotatably connected to the front foot pedal (1). 92) A second lever bracket (93) rotatably connected to the foot pedal (1) and a second cam (94) located at the front end of the second lever bracket (93); a second tension spring (91) is connected at one end to the foot pedal (1) and at the other end to the second lever bracket (93) and located at the end away from the second cam (94); a first limiting block (72) and a second limiting block (92) are symmetrically arranged on both sides of the foot pedal (1) to limit the rotation angle of the corresponding lever bracket, so that the corresponding lever bracket has a working position and a non-working position; wherein, when the first lever bracket (73) and the second lever bracket (93) are in the working position, the first permanent magnet group (2) and the second permanent magnet group (4) can be tightly attracted to the iron climbing surface (10); when the first lever bracket (73) and the second lever bracket (93) are in the non-working position, the first permanent magnet group (2) and the second permanent magnet group (4) can be easily separated from the iron climbing surface (10).

2. The magnetic climbing device for feet according to claim 1, characterized in that: The first permanent magnet group (2) includes a first permanent magnet (21) and a second permanent magnet (22) arranged from top to bottom; the second permanent magnet group (4) includes a third permanent magnet (41) and a fourth permanent magnet (42) arranged from top to bottom; the first permanent magnet group (2) and the second permanent magnet group (4) are respectively provided with a first top block (3) and a second top block (5); the first top block (3) is located above the first permanent magnet (21), and the second top block (5) is located above the third permanent magnet (41).

3. The magnetic climbing device for feet according to claim 2, characterized in that: The first permanent magnet (21), the second permanent magnet (22), the third permanent magnet (41) and the fourth permanent magnet (42) are all ring-shaped and are locked to the foot pedal (1) by screws; the first top block (3) and the second top block (5) are locked to the foot pedal (1) by screws.

4. The magnetic climbing device for feet according to claim 1, characterized in that: The foot pedal (6) is connected to the rear end of the first lever bracket (73) and the second lever bracket (93).

5. The magnetic climbing device for feet according to claim 1, characterized in that: An ankle strap (61) for binding the user's foot is provided on the foot pedal (6).

6. The magnetic climbing device for feet according to claim 1, characterized in that: The front inner side of the foot pedal (1) is provided with a toe pressure plate (11) that provides a force support point for the user's instep.

7. The magnetic climbing device for feet according to claim 1, characterized in that: The first limiting block (72) has a first limiting surface (721) and a second limiting surface (722), and the second limiting block (92) has a third limiting surface (921) and a fourth limiting surface (922). The first limiting surface (721) and the second limiting surface (722) correspond to the working position and non-working position of the first lever support (73); the third limiting surface (921) and the fourth limiting surface (922) correspond to the working position and non-working position of the second lever support (93).

8. A method of using a foot-operated magnetic climbing device, characterized in that: Includes the following steps, S1: Adsorption stage, the foot magnetic climber is placed on the iron climbing surface (10), the user presses down with his foot, driving the first lever bracket (73) and the second lever bracket (93) to overcome the reset torque of the first tension spring (71) and the second tension spring (91), and rotate from the non-working position to the working position limited by the first limit block (72) and the second limit block (92); at this time, the first cam (74) moves away from the iron climbing surface (10), and the second cam (94) moves away from the iron climbing surface (10), so that the permanent magnets in the first permanent magnet group (2) and the second permanent magnet group (4) are tightly adsorbed on the iron climbing surface (10). S2: Holding phase. After step S1, the user maintains the downward pressure posture of the feet. The first lever support (73) and the second lever support (93) are stabilized in the working position. The first permanent magnet group (2) and the second permanent magnet group (4) provide continuous maximum magnetic attraction force to support the user in climbing. S3: Lift your foot and move to the next adsorption point; when you need to move your foot, lift your heel, and the reset torque of the first tension spring (71) and the second tension spring (91) drives the first lever bracket (73) and the second lever bracket (93) to rotate from the working position to the non-working position; during this process, the first cam (74) pushes the second permanent magnet (22) in the first permanent magnet group (2), and the second cam (94) pushes the fourth permanent magnet (42) in the second permanent magnet group (4); at the same time, the first top block (3) and the second top block (5) abut against the iron climbing surface (10) and push the first permanent magnet (21) and the third permanent magnet (41) in the first permanent magnet group (2) and the second permanent magnet group (4) respectively, so that a gap is generated between the first permanent magnet group (2) and the second permanent magnet group (4) and the iron climbing surface (10), and the magnetic adsorption force is significantly weakened, thereby realizing the easy separation of the climber.

9. The method of using the foot magnetic climber according to claim 8, characterized in that: In the S1 adsorption process, the user presses down on the heel, and the foot pedal (6) drives the first lever bracket (73) and the second lever bracket (93) to rotate simultaneously to the working position.

10. The method of using the foot magnetic climber according to claim 8, characterized in that: In step S3, when the user lifts his heel, the instep acts on the toe plate (11), and the toe plate (11) is used as a fulcrum to exert force to assist in lifting the heel.

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