Brake device, wheel body assembly, and walking aid

Abstract

The present invention discloses a braking device, a wheel body assembly, and a walking aid, the braking device comprising a shaft, a housing, a magnetic induction member, and a magnet assembly, the housing is sleeved on the shaft and arranged coaxially with the shaft, the housing is rotatable relative to the shaft, the magnetic induction member is wound with a coil, and the magnet assembly comprises a plurality of magnets arranged at intervals along the circumferential direction of the shaft, wherein one of the magnetic induction member and the magnet assembly is connected to the shaft and the other is connected to the housing, so that when the housing rotates relative to the shaft, the coil can cut the magnetic field formed by the magnet assembly and generate resistance in a direction opposite to the rotation direction of the housing or the shaft, thereby playing a role of braking for the wheel body formed integrally with the braking device or connected to the braking device, and the braking force is not friction braking but is related to the rotation of the housing or the shaft, so that no emergency stop effect is generated, safety is higher, wear can be reduced, and the service life of the braking device is extended, while the structure of the braking device is simple and easy to manufacture.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a braking device, a wheel body assembly, and a walking aid.

Background Art

[0002] An assisted walking device such as a walking aid can assist the walking of people with limited motor ability, such as patients with lesions in the lower limbs and the elderly. For example, a walking aid is a support frame, and the user supports the support frame with both hands, lifts the support frame during walking and moves it, and can achieve the purpose of moving the body.

[0003] As a result of long-term research and development, the applicant of the present invention has discovered that the user always needs to lift the support frame during walking, which is more burdensome, has a slower moving speed, and is inconvenient to use. Currently, although wheels are provided at the bottom of the support frame to increase flexibility, the supporting force and speed given to the user during the moving process cannot be controlled, so the user is prone to falling and the safety is worse. When braking through a braking device, the operation requirements of the user become higher, and an emergency stop of the brake is also dangerous.

Summary of the Invention

[0004] In order to solve the technical problem of the prior art that the safety is reduced when wheels are provided on devices such as walking aids, the present invention provides a braking device, a wheel body assembly, and a walking aid.

[0005] In order to solve the above technical problem, one technical solution adopted in the present invention is to provide a braking device, which includes a shaft body, a housing sleeved on the shaft body and arranged coaxially with the shaft body, the housing being rotatable relative to the shaft body, a magnetic induction member around which a coil is wound, and a magnet assembly including a plurality of magnets arranged at intervals along the circumferential direction of the shaft body. When the housing rotates relative to the shaft body, the coil can cut the magnetic field formed by the magnet assembly to generate a resistance in a direction opposite to the rotation direction of the housing or the shaft body. One of the magnetic induction member and the magnet assembly is connected to the shaft body, and the other is connected to the housing.

[0006] To solve the above technical problem, another technical solution adopted in the present invention is to provide a wheel body assembly, and the wheel body assembly includes equipped with a braking device as described above. Here, since the housing is used as a wheel body, it is provided in an annular shape, or equipped with a braking device and a wheel body as described above, and the wheel body is connected to the housing or the shaft body.

[0007] To solve the above technical problem, another technical solution adopted in the present invention is to provide a walking aid, and the walking aid includes a main body frame and a wheel body assembly as described above, and the wheel body assembly is rotatably connected to the bottom of the main body frame.

[0008] The braking device of the present invention includes a shaft body, a housing, a magnetic induction member, and a magnet assembly. The housing is sleeved on the shaft body and arranged coaxially with the shaft body. The housing is rotatable relative to the shaft body. A coil is wound around the magnetic induction member. The magnet assembly includes a plurality of magnets arranged at intervals along the circumferential direction of the shaft body. Here, one of the magnetic induction member and the magnet assembly is connected to the shaft body, and the other is connected to the housing. When the housing rotates relative to the shaft body, the coil cuts the magnetic field formed by the magnet assembly, generating a resistance in the direction opposite to the rotation direction of the housing or the shaft body, and can play a braking role for the wheel body integrally formed with or connected to the braking device. Moreover, its braking force is not frictional braking and is related to the rotation of the housing or the shaft body, so it does not generate an emergency stop effect, has higher safety, can also reduce wear, and extend the service life of the braking device. At the same time, the structure of the braking device is simple and easy to manufacture.

Brief Description of the Drawings

[0009] To more clearly explain the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings that need to be used in the description of the embodiments. However, the drawings in the following description are only some embodiments of the present invention. It is obvious that those skilled in the art can obtain other drawings based on these drawings without creative effort.

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Modes for Carrying Out the Invention

[0010] Hereinafter, together with the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. However, it is obvious that the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention shall fall within the protection scope of the present invention.

[0011] The terms "first" and "second" in the present invention are used for illustrative purposes only and are not to be construed as indicating or implying relative importance, nor do they implicitly specify the number of the technical features shown. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless explicitly and specifically limited. In addition, the terms "comprising" and "including" and all their variations are intended to cover non-exclusive inclusion. For example, a process, method, system, product or apparatus that includes a series of steps or units is not limited to the listed steps or units, and may optionally include steps or units not listed, or may optionally include other steps or units inherent to the process, method, product or apparatus. On the other hand, the term "and / or" is merely an explanation of the relationship of related objects and indicates that there are three possible relationships. For example, A and / or B can represent A alone, both A and B, and B alone. Also, the symbol " / " in this specification generally indicates that the related objects before and after are in an "or" relationship.

[0012] Referring to FIGS. 1 to 4, a first embodiment of the braking device 10 of the present invention includes a shaft body 100, a housing 200, a magnetic induction member 310, and a magnet assembly 320. The housing 200 is sleeved on the shaft body 100 and is arranged coaxially with the shaft body 100. The housing 200 is rotatable relative to the shaft body 100. A coil 311 is wound around the magnetic induction member 310. The magnet assembly 320 includes a plurality of magnets arranged at intervals along the circumferential direction of the shaft body 100. Here, one of the magnetic induction member 310 and the magnet assembly 320 is connected to the shaft body 100, and the other is connected to the housing 200. When the housing 200 rotates relative to the shaft body 100, the coil 311 cuts the magnetic field formed by the magnet assembly 320, generating a resistance opposite to the rotation direction of the housing 200 or the shaft body 100, enabling the braking device 10 to play a braking role. Moreover, its braking force is not frictional braking and is related to the rotation of the housing 200 or the shaft body 100, so it does not produce an emergency stop effect, has higher safety, can also reduce wear, extend the service life of the braking device 10, and at the same time, its structure is simple and easy to manufacture.

[0013] In this embodiment, the braking device 10 may further include a tire 400. The tire 400 is sleeved on the housing 200 and can play a role in vibration damping.

[0014] Specifically, referring to FIG. 5, the magnet may include a first magnet 321 and a second magnet 322. In this embodiment, the first magnet 321 and the second magnet 322 are taken as examples for description. The magnet assembly 320 is rotated counterclockwise in FIG. 5 at a speed v, the magnetic induction member 310 is stationary, the magnetic field intensities generated by the first magnet 321 and the second magnet 322 are B1 and B2 respectively, the magnetic pole of the first magnet 321 facing the magnetic induction member 310 is the north pole, the magnetic pole of the second magnet 322 facing the magnetic induction member 310 is the south pole, the portions cutting the magnetic induction lines of the coil 311 are the c-side portion and the d-side portion, the length of the projection in the direction of cutting the magnetic induction lines of the coil 311 (i.e., the circumferential direction of the shaft body 100) (i.e., the length of the c-side portion or the d-side portion along the axial direction of the shaft body 100) is denoted as L, the direction of the induced current generated by the c-side portion is taken as the forward direction shown in FIG. 5, and the direction of the induced current generated by the d-side portion is taken as the reverse direction shown in FIG. 5. Then, the Ampere force generated by the c-side portion is Fc = nB1Lv, and the Ampere force generated by the d-side portion is Fd = nB2Lv. Here, n is the number of turns of the coil 311. Since the directions of both Ampere forces are clockwise, the resultant force of the two is F resultant = nB1Lv + nB2Lv. Since the magnetic field intensities generated by the first magnet 321 and the second magnet 322 are equal, i.e., B1 = B2 = B, F resultant = 2 * nBLv.

[0015] In this embodiment, the resistance is in a forward relationship with the rotational speed of the housing 200 or the shaft body 100, and can also be obtained from F resultant = 2 * nBLv. That is, the higher the rotational speed of the housing 200, the greater the resistance in the direction opposite to the rotational direction of the housing 200 generated by the coil 311 cutting the magnetic field formed by the magnet assembly 320. Therefore, when the rotational speed of the braking device 10 remains unchanged, a certain braking force can be provided, and the stability is better. On the other hand, when the rotational speed of the braking device 10 increases, a greater braking force can be provided, so that it can prevent the moving speed of the braking device 10 from becoming too fast and improve the safety.

[0016] In this embodiment, the number of magnets is an even number, and the plurality of magnets are arranged symmetrically with respect to the axis of the shaft body 100. Therefore, the distribution of the magnetic field formed by the magnet assembly 320 can be made more uniform, and thus, the resistance generated by the coil 311 cutting the magnetic field formed by the magnet assembly 320 can be made more stable.

[0017] In this embodiment, the magnetic poles of two magnets symmetrical with respect to the axis 100 are set in the same direction, and the magnetic poles of two adjacent magnets are set in opposite directions. Here, if the mounting direction of the magnetic poles of the magnets is defined as the direction facing the axis of the shaft body 100 and the direction facing away from the axis of the shaft body 100, the magnetic poles of the two magnets are in the same direction, that is, the magnetic poles of the two magnets all face the axis of the shaft body 100 or face away from the axis of the shaft body 100, and the magnetic poles of the two magnets are in opposite directions, that is, one magnetic pole of the two magnets faces the axis of the shaft body 100 and the other magnetic pole faces away from the axis of the shaft body 100. With the above setting of the magnets, the distribution of the magnetic field formed by the magnet assembly 320 can be made more uniform, and thus, the resistance generated by the coil 311 cutting the magnetic field formed by the magnet assembly 320 can be made more stable.

[0018] In this embodiment, the magnetic induction member 310 includes a main body portion 312 and a plurality of mounting portions 313 provided at intervals along the outer periphery of the main body portion 312. Since the coil 311 is wound around the mounting portions 313, the relative position between the coil 311 and the magnetic induction member 310 can be made more stable.

[0019] In this embodiment, the mounting portion 313 may be provided in an "I" shape, which can facilitate the winding of the coil 311, limit the position of the coil 311, prevent the coil 311 from falling off from the mounting portion 313 in a direction away from the shaft body 100, and make the overall structure of the coil 311 and the magnetic induction member 310 more stable.

[0020] In other embodiments, the mounting portion 313 may be provided linearly to enable winding of the coil 311, and is not limited herein.

[0021] In this embodiment, the maximum width of the coil 311 on the mounting portion 313 along the circumferential direction of the shaft body 100 is equal to the width of the magnet along the circumferential direction of the shaft body 100, and the maximum length of the coil 311 on the mounting portion 313 along the axial direction of the shaft body 100 is greater than or equal to the length along the axial direction of the magnet shaft body 100. Thus, the coil 311 can continuously cut the magnetic field formed by the magnet assembly 320 during movement relative to the magnet, thereby continuously generating resistance and improving the stability of the resistance.

[0022] In other embodiments, the maximum width of the coil 311 on the mounting portion 313 along the circumferential direction of the shaft body 100 can also be made larger than the width of the magnet along the circumferential direction of the shaft body 100, and is not limited herein.

[0023] In this embodiment, the difference between the maximum width of the coil 311 on the mounting portion 313 along the circumferential direction of the shaft body 100 and the width of the magnet along the circumferential direction of the shaft body 100 is a, and the width of the magnet along the circumferential direction of the shaft body 100 is b. Here, the ratio of a to b is 10% or less, for example, 10%, 8% or 5%. When a is 0, the coil 311 can continuously cut the magnetic field formed by the magnet assembly 320 during movement relative to the magnet. When a is greater than 0, both sides of the coil 311 will be in the regions corresponding to the same magnetic pole simultaneously for a certain period of time, the current generated in the coil 311 will be 0, and the resistance will be intermittent.

[0024] In this embodiment, the number of magnets is greater than the number of mounting portions 313, and the difference between the number of magnets and the number of mounting portions 313 is a positive integer. Thus, the role of the magnetic field generated by the magnets on the coil 311 can be made continuous without interruption, thereby continuously generating resistance and improving the stability of the resistance.

[0025] In this embodiment, all the coils 311 on the plurality of mounting portions 313 are combined to form a closed loop. Specifically, all the coils 311 can be short-circuited and not connected to other devices. In other embodiments, devices such as switches and resistors can also be externally connected. However, the closed loop in this embodiment does not include devices such as drivers, that is, the current generated by the coils 311 in this embodiment is only used to generate Ampere force or mainly used to generate Ampere force.

[0026] In other embodiments, the coils 311 on each of the plurality of mounting portions 313 may form a closed loop, or the coils 311 on at least two of the plurality of mounting portions 313 may be combined to form a closed loop, which is not limited here.

[0027] In this embodiment, a receiving space is formed in the housing 200, and an opening (not shown) is formed on one side of the housing 200 in the receiving space. The magnetic induction member 310 and the magnet assembly 320 are provided in the receiving space. The braking device 10 further includes a cover plate 510. The cover plate 510 covers the opening, plays a role in protecting components such as the magnetic induction member 310 and the magnet assembly 320, and makes the braking device 10 have a more regular appearance.

[0028] In this embodiment, between the cover plate 510 and the shaft body 100, and between the cover plate 510 and the housing 200, they can be fixedly connected by screws respectively. In other embodiments, between the cover plate 510 and the housing 200, they can also be connected by snaps, welding, or pastes, etc., which is not limited here.

[0029] In this embodiment, the braking device 10 may further include a first bearing 520 and a second bearing 530. The first bearing 520 is provided between the shaft body 100 and the housing 200, and the second bearing 530 is provided between the shaft body 100 and the cover plate 510. By providing the first bearing 520 and the second bearing 530, the frictional force between the shaft body 100 and the housing 200, and between the shaft body 100 and the cover plate 510 can be reduced, and it also plays a role in supporting the shaft body 100, and the service life of the shaft body 100, the housing 200, and the cover plate 510 can be prolonged.

[0030] Referring to FIGS. 1, 6 and 7, a second embodiment of the braking device 10 of the present invention includes a shaft body 100, a housing 200, a magnetic induction mechanism 300, and an adjustment mechanism 610. The magnetic induction mechanism 300 is provided in the housing 200 and is used to generate a resistance opposite to the rotation direction of the housing with respect to the housing or a resistance opposite to the rotation direction of the shaft body with respect to the shaft body through magnetic field reaction when the housing 200 is rotated. The adjustment mechanism 610 is connected to the magnetic induction mechanism 300 and is used to adjust the magnitude of the resistance. Here, the magnetic induction mechanism 300 includes a magnetic induction member 310 and a magnet assembly 320. The structures of the shaft body 100, the housing 200, the magnetic induction member 310, and the magnet assembly 320 can refer to the first embodiment of the braking device 10 described above, and will not be described repeatedly here. By providing the adjustment mechanism 610 to automatically adjust the resistance, the application range of the braking device 10 can be made wider and more intelligent.

[0031] Referring to FIGS. 8 to 12 together, in this embodiment, the adjustment mechanism 610 includes an adjustment member 611 and at least one resistor 612. The adjustment member 611 is electrically connected to the magnetic induction mechanism 300 and is provided with a first connection portion 6111. At both ends of at least one resistor 612, at least two second connection portions 6121 are respectively provided. The adjustment member 611 is movable relative to the resistor 612, whereby the first connection portion 6111 is electrically connected to one of the at least two second connection portions 6121, so that the magnetic induction mechanism 300 can be connected to loads having different resistances, enabling adjustment of the resistance.

[0032] In this embodiment, the braking device 10 may further include a first support tube 613. At least one resistor 612 is provided on the first support tube 613. The adjustment member 611 is provided in a ring shape and can rotate relative to the first support tube 613. The first connection portion 6111 is formed in a groove on the outer periphery of the adjustment member 611. The outer peripheral surface of the adjustment member 611 is insulated except for the groove, and the groove has conductivity. The second connection portion 6121 includes a contact member 6122 and a first elastic member 6123. The contact member 6122 is electrically connected to the resistor 612. The first elastic member 6123 is used to apply an elastic force to the contact member 6122 so that the contact member 6122 contacts the outer periphery of the adjustment member 611. When the first connection portion 6111 rotates and faces the second connection portion 6121, the contact member 6122 can contact the first connection portion 6111, and the contact member 6122 can be electrically connected to the first connection portion 6111.

[0033] In this embodiment, an annular groove 6112 is formed on the outer periphery of the adjustment member 611. The first connection portion 6111 is recessed with respect to the annular groove 6112. The end of the contact member 6122 is provided to protrude in an arc shape, so that at least a part of the contact member 6122 is embedded in the annular groove 6112, realizing the limit of the contact member 6122 in the axial direction of the first support tube 613, avoiding the contact member 6122 from detaching from the adjustment member 611, and improving the reliability of the braking device 10.

[0034] In this embodiment, the braking device 10 may include a second support tube 614 and a knob 615 connected to the second support tube 614. The second support tube 614 is provided in a nested manner with the first support tube 613, and the adjusting member 611 is provided on the second support tube 614. Thereby, the adjusting member 611 can rotate together with the knob 615. The knob 615 can receive a force and rotate, and thus the adjusting member 611 can be driven to rotate to achieve adjustment. By providing the knob 615, the adjustment of the adjustment mechanism 610 can be realized, the adjustment operation can be made more convenient, the occupied space of the knob 615 is small, and the overall structure of the adjustment mechanism 610 becomes more compact.

[0035] Referring also to FIG. 13, in this embodiment, the braking device 10 may further include a casing 616. The adjusting member 611 and the resistor 612 are provided in the casing 616. An opening 6161 is formed at one end of the casing 616 away from the knob 165. The opening 6161 is provided in a polygonal shape. A limiting member 6141 and a second elastic member 6142 are provided at one end of the second support tube 614 away from the knob 615. The second elastic member 6142 is used to apply an elastic force to the limiting member 6141 so that the limiting member 6141 can abut against the casing 616 during the rotation of the second support tube 614.

[0036] Specifically, in this embodiment, the opening 6161 includes a plurality of receiving ports 6162 arranged at intervals along the circumferential direction of the first support tube 613. When the limit member 6141 is rotated to the receiving port 6162, the compression distance of the second elastic member 6142 becomes 0, so that the limit member 6141 is separated from the casing 616, or the limit member 6141 abuts against the casing 616, but the force acting on the casing 616 becomes 0. At this time, the first connection portion 6111 abuts against one of the second connection portions 6121. When the limit member 6141 is rotated between the two receiving ports 6162, the limit member 6141 abuts against the casing 616, but the force acting on the casing 616 becomes greater than 0. At this time, the first connection portion 6111 does not abut against one of the second connection portions 6121 either. In the process of rotating the knob 615, the user can sense whether the knob 615 has been rotated to a predetermined gear.

[0037] In other embodiments, the adjusting member 611 may be a sliding body provided linearly or arcuately. The adjusting member 611 may slide relative to the resistor 612 so that the second connection portion 6121 is electrically connected to the first connection portion 6111.

[0038] In this embodiment, the number of the resistors 612 is plural. The plural resistors 612 form a plurality of resistor groups. Each resistor group includes at least one resistor 612. The plural resistor groups are provided at intervals along the axial direction of the first support tube 613. The number of the adjusting members 611 is plural and is the same as the number of the resistor groups. The plural adjusting members 611 are provided at intervals along the axial direction of the first support tube 613 and correspond one-to-one to the resistor groups respectively. Therefore, the magnetic induction mechanism 300 is connected to loads having different resistances, and the adjustment of the resistance becomes more flexible, with a wider range and more adaptability.

[0039] Referring to FIG. 14 together, for example, in this embodiment, the number of resistor groups is 3, which are used to be respectively connected to the three wirings of the magnetic induction mechanism 300. Each resistor group includes four resistors 612. The four resistors 612 are located in the same plane perpendicular to the axial direction of the first support tube 613. The four resistors 612 in each resistor group are connected in series. One ends of the three resistor groups are connected to each other. Second connection portions 6121 corresponding to a plurality of gears are respectively provided between the respective resistors 612 and at the other end of the resistor group. For example, three resistors 612 can be connected in the first speed gear, and six resistors 612 can be connected in the second speed gear.

[0040] In other embodiments, the magnetic induction mechanism 300 may be directly connected to the adjustment mechanism 610 by guiding two wirings, or the magnetic induction mechanism 300 may be connected to the adjustment mechanism 610 via two wirings after guiding two or three wirings and passing through a rectification mechanism (not shown), which is not limited herein.

[0041] Referring to FIGS. 1, 15 to 17, a third embodiment of the braking device 10 of the present invention includes a shaft body 100, a housing 200, a magnetic induction mechanism 300, and an adjustment mechanism 620. The structures of the shaft body 100, the housing 200, and the magnetic induction mechanism 300 may refer to the second embodiment of the braking device 10 described above, and will not be repeatedly described here. The adjustment mechanism 620 is connected to the magnetic induction mechanism 300 and is used to adjust the magnitude of resistance.

[0042] In this embodiment, the adjustment mechanism 620 includes an adjustment member and at least one resistor 622. The adjustment member includes at least one key 621, and a conduction portion 6211 is provided on the key 621. The braking device 10 further includes a first connection portion 6221 and a second connection portion 6222 that are arranged at intervals. The first connection portion 6221 is electrically connected to one end of the magnetic induction mechanism 300 through the resistor 622, and the second connection portion 6222 is electrically connected to the other end of the magnetic induction mechanism 300. The key 621 can be pressed, so that the conduction portion 6211 conducts the first connection portion 6221 and the second connection portion 6222, and the corresponding resistor 622 as a load can be connected to the magnetic induction mechanism 300 to realize the change of resistance. By providing the key 621, the adjustment of the adjustment mechanism 620 can be realized, the touch feeling of adjustment can be made clearer, and the gear adjustment can be made more reliable.

[0043] In other embodiments, one end of the resistor 622 may be connected to one end of the magnetic induction mechanism 300 through the first connection portion 6221, and the other end of the resistor 622 may be connected to the other end of the magnetic induction mechanism 300 through the second connection portion 6222. The key 621 can be pressed, so that the conduction portion 6211 conducts the first connection portion 6221 and the second connection portion 6222, short-circuits the resistor 622, realizes the change of the load connected to the magnetic induction mechanism 300, and can realize the change of resistance.

[0044] In this embodiment, the adjustment member includes at least two keys 621, and a conduction portion 6211 is provided on the keys 621. The number of the first connection portion 6221 and the second connection portion 6222 is at least two. The two first connection portions 6221 are respectively connected to both ends of at least one resistor 622, so that when one of the at least two keys 621 is pressed, the conduction portion 6211 conducts one of the at least two first connection portions 6221 and the second connection portion 6222, and the corresponding resistor 622 as a load can be connected to the magnetic induction mechanism 300 to realize the change of resistance.

[0045] In this embodiment, at least two keys 621 may be arranged at intervals along a straight line. In other embodiments, at least two keys 621 may be arranged along a curve or other line, which is not limited herein.

[0046] Referring to FIGS. 18 and 19 together, in this embodiment, the adjustment mechanism 620 may further include an elastic return assembly. The elastic return assembly will act on at least two keys 621 respectively. When one of the at least two keys 621 is pressed, the other keys 621 can be bounced, so that the number of connected resistors 622 corresponds to the gears, no interference occurs between the gears, and the circuit is not easily short-circuited, so the reliability and safety are higher.

[0047] In this embodiment, the key 621 includes a key body 6212 and a button 6213 provided at one end of the key body 6212. The conduction part 6211 is provided at the other end of the key body 6212. The elastic return assembly may include a carrier plate 623 and a first limit plate 624. The first limit plate 624 is formed with a first limit slot 6241 in an inverted "L" shape or similar to an inverted "L" shape. The first limit plate 624 includes a limit part 6242 corresponding to the first limit slot 6241. A first elastic member 6244 is provided between the carrier plate 623 and the first limit plate 624. The key body 6212 is further provided with a limit block 6214, and a second elastic member 6215 is sleeved on the key body 6212. Specifically, when the key 621 is not pressed, the limit block 6214 is located above the limit part 6242. During the process of pressing the key 621, the second elastic member 6215 is compressed and deformed. The limit block 6214 acts on the limit part 6242 to cause deformation of the first elastic member 6244. The first limit plate 624 slides relative to the carrier plate 623 (for example, slides to the left in FIG. 23), and the limit block 6214 can enter into the first limit slot 6241. After the first limit plate 624 reaches the bottom of the first limit slot 6241, the first limit plate 624 slides relative to the carrier plate 623 under the action of the first elastic member 6244 (for example, slides to the right in FIG. 23), and the limit block 6214 is restricted below the limit part 6242. When another key 621 is pressed, the first limit plate 624 slides relative to the carrier plate 623 again (for example, slides to the left in FIG. 23), and the limit block 6214 of the key 621 with a limit disengages from the corresponding limit part 6242, and the key 621 can spring back under the action of the second elastic member 6215.

[0048] In this embodiment, the first limit plate 624 is provided with an inclined surface 6243 corresponding to the first limit slot 6241. The inclined surface 6243 can be used to guide the limit block 6214, facilitating the limit block 6214 to slide down along the inclined surface 6243 and engage into the first limit slot 6241, and making the process of pressing the key 621 smoother.

[0049] In this embodiment, a receiving groove 6245 is further formed in the first limit plate 624, and a contact post 6231 is provided on the carrier plate 623. Both the first elastic member 6244 and the contact post 6231 are received in the receiving groove 6245. Since the contact post 6231 is used to contact the first elastic member 6244, the structure and position of the first elastic member 6244 are more stable during the process of being compressed.

[0050] Referring to FIG. 20, in another specific embodiment, the first elastic member 6246 may be further provided at one end of the first limit plate 624 and contact the inner wall of the carrier plate 623, thereby applying an elastic force to the first limit plate 624, with a simpler structure and easier manufacturing.

[0051] In this embodiment, a second limit slot 6232 may be further formed in the carrier plate 623. The limit block 6214 can be received in the second limit slot 6232 and is used to realize the limit on the key 621 in a plane perpendicular to the pressing direction of the key 621 (the horizontal plane shown in FIG. 20). For example, the second limit slot 6232 can realize the limit on the key 621 in the extending direction of the carrier plate 623 (the left - right direction shown in FIG. 20).

[0052] In this embodiment, the key body 6212 is provided in a cylindrical shape, and the second limit slot 6232 can further limit the rotation of the key body 6212. By the rotation of the key body 6212, it is avoided that the limit block 6214 is displaced from the corresponding first limit slot 6241. Consequently, the limit block 6214 is not pushed into the first limit slot 6241, and the reliability of the elastic return assembly can be improved.

[0053] In other embodiments, a corresponding limit slot and a limit protrusion (not shown) may be provided on the key housing 626 carrying the key body 6212 and the key body 6212 respectively, thereby realizing the limit for the key 621 in a plane perpendicular to the pressing direction.

[0054] In other embodiments, in order to prevent the rotation of the key body 6212, the key body 6212 may be directly provided as a rectangular column or a column of other shapes, which is not limited herein.

[0055] Referring to FIG. 20, in another specific embodiment, the elastic return assembly may further include a plurality of second limit plates 625. The plurality of second limit plates 625 are sequentially arranged along the extending direction of the first limit plate 624. A third limit slot 6251 can be formed between two adjacent second limit plates 625, thereby realizing the limit for the key 621 in a plane perpendicular to the pressing direction. Specifically, after the key 621 is pressed, the limit block 6214 acts on two adjacent second limit plates 625, pushing the two adjacent second limit plates 625 out to both sides of the limit block 6214, and the other second limit plates 625 are close to and in contact with each other, thereby forming a third limit slot 6251 for accommodating the limit block 6214 and realizing the limit for the limit block 6214.

[0056] In this embodiment, an inclined surface 6252 may be further formed on the second limit plate 625. The inclined surface 6252 can be used to guide the limit block 6214, facilitating the limit block 6214 to slide down along the inclined surface 6252 and engage into the third limit slot 6251, and enabling the process of pressing the key 621 to be smoother.

[0057] Referring to FIG. 21, in other embodiments, the number of resistors 622 may be plural. The plural resistors 622 form plural resistor groups, each resistor group includes at least one resistor 622, and the plural resistor groups are provided at intervals along a direction perpendicular to the extending direction of the first limit plate 624. The conducting portion 6211 can conduct the corresponding resistors 622 among the plural resistor groups. Therefore, the corresponding resistor 622 as a load can be connected to the magnetic induction mechanism 300, and the change of resistance can be realized.

[0058] Referring to FIGS. 1, 22 to 24, a fourth embodiment of the braking device 10 of the present invention includes a shaft body 100, a housing 200, a magnetic induction mechanism 300, and an adjusting mechanism 630. The structures of the shaft body 100, the housing 200, and the magnetic induction mechanism 300 may refer to the second embodiment of the above braking device 10, and will not be described repeatedly here. The adjusting mechanism 630 is connected to the magnetic induction mechanism 300 and is used to adjust the magnitude of resistance.

[0059] In this embodiment, the adjusting mechanism 630 includes a resistor body 631, a contacting member 632 that slides and contacts the resistor body 631, and an adjusting member 633 connected to the contacting member 632. The resistor body 631 and the adjusting member 633 are respectively electrically connected to the magnetic induction mechanism 300. The resistor body 631 is integrally provided, and stepless adjustment of the resistance value connected to the resistor body 631 is realized by the sliding contact between the contacting member 632 and the resistor body 631, so that stepless adjustment of the resistance can be realized, and the application range of the braking device 10 can be further expanded.

[0060] In this embodiment, the braking device 10 further includes a support member 634, the resistor body 631 is provided on the support member 634, and an opening 6341 for passing a wiring for connecting the resistor body 631 and the magnetic induction mechanism 300 is formed in the support member 634, so as to avoid interference between the wiring and the resistor body 631, and further short circuit, etc., and the safety of the braking device 10 can be improved.

[0061] In this embodiment, the braking device 10 may further include a limit member 635. The limit member 635 is provided corresponding to the opening 6341 for limiting the contact member 632, so that the state where the contact member 632 is in contact with the resistor body 631 can be maintained, and it is possible to avoid problems such as the contact member 632 coming off from the resistor body 631 and the circuit being disconnected, thereby improving the reliability of the braking device 10.

[0062] In this embodiment, the support member 634 may be provided in a tubular shape, and the resistor body 631 may be provided in a sector-annular shape. The resistor body 631 is wound around the support member 634, thereby making the structure of the adjustment mechanism 630 compact and reducing the occupied space.

[0063] In this embodiment, the contact member 632 is an elastic sheet that can elastically contact the resistor body 631, so that the state where the contact member 632 is in contact with the resistor body 631 can be maintained and it is not easily detached.

[0064] In this embodiment, the contact member 632 is provided so as to extend along the circumferential direction of the support member 634, which is more advantageous for maintaining the state where the contact member 632 is in contact with the resistor body 631 during the process of the contact member 632 rotating relative to the resistor body 631, with higher reliability and making the rotation of the contact member 632 relative to the resistor body 631 easier.

[0065] In this embodiment, the adjusting member 633 may include a knob. The knob is provided at one end of the supporting member 634 and can rotate relative to the supporting member 634, thereby driving the abutting member 632 to slide relative to the resistor body 631, realizing the adjustment of the resistance value of the resistor connected to the magnetic induction mechanism 300. By providing a knob to realize the adjustment of the adjusting mechanism 630, the adjustment operation becomes easier. Furthermore, the occupied space of the knob is small, and the overall structure of the adjusting mechanism 630 becomes more compact.

[0066] In this embodiment, the braking device 10 may further include a casing 636. The casing 636 is sleeved on the supporting member 634. The knob is provided on the casing 636. An overhaul 6361 is formed on the end face of the casing 636 where the knob is provided. The knob is connected to the abutting member 632 through a connecting member 637 passing through the overhaul 6361. Therefore, it is possible to avoid the connecting member 637 interfering with other components and make the rotation process of the knob smoother.

[0067] In this embodiment, the braking device 10 may further include a cover body (not shown). The cover body covers the casing 636, which can play a role in protecting and dust-proofing the adjusting mechanism 630, and can make the braking device 10 have a more regular appearance.

[0068] Referring to FIGS. 25 and 26, in other embodiments, the number of resistor bodies 631 may be a plurality such as two or three. The plurality of resistor bodies 631 are connected in parallel, and a plurality of abutting members 632 for respectively abutting against the corresponding resistor bodies 631 are connected to the connecting member 637, thereby realizing stepless adjustment of the resistance value.

[0069] Referring to FIGS. 1, 27, and 28, a fifth embodiment of the braking device 10 of the present invention includes a shaft body 100, a housing 200, a magnetic induction mechanism 300, and an adjustment mechanism 640. The structures of the shaft body 100, the housing 200, and the magnetic induction mechanism 300 may be referred to the second embodiment of the braking device 10 described above, and will not be repeatedly described here. The adjustment mechanism 640 is connected to the magnetic induction mechanism 300 and is used to adjust the magnitude of the resistance.

[0070] In this embodiment, the adjustment mechanism 640 includes a resistor body 641, a contact member 642 that slides and contacts the resistor body 641, and an adjustment member 643 connected to the contact member 642. The contact member 642 is electrically connected to one end of the magnetic induction mechanism 300. One end of the resistor body 641 is electrically connected to one end of the magnetic induction mechanism 300. The resistor body 641 is integrally provided. By the sliding contact between the contact member 642 and the resistor body 641, stepless adjustment of the resistance value connected to the resistor body 641 is realized, stepless adjustment of the resistance can be realized, and the application range of the braking device 10 can be further expanded.

[0071] In other embodiments, both ends of the resistor body 641 may be electrically connected to both ends of the magnetic induction mechanism 300 respectively, and are not limited here.

[0072] In this embodiment, the braking device 10 may further include a casing 644 for forming a housing space for accommodating the resistor body 641. A slide groove 6441 is formed in the casing 644. The adjustment member 643 includes a handle. The adjustment member is provided outside the casing 644 and is connected to the contact member 642 through a connecting rod 645 penetrating the slide groove 6441. Thereby, the adjustment member 643 receives a force to drive the contact member 642 to move along the slide groove 6441, realizes adjustment of the resistance value of the resistor body 641, realizes adjustment of the adjustment mechanism 640 by providing the sliding adjustment member 643, can be easily held by the user by hand, and the adjustment operation becomes more convenient.

[0073] In this embodiment, the contact member 642 may be electrically connected to the magnetic induction mechanism 300 via a conductive slide (not shown) provided in the casing 644, or may be directly electrically connected to the magnetic induction mechanism 300 via wiring, and is not limited herein.

[0074] Referring to FIGS. 26, 29, and 30, the number of resistor bodies 641 may be a plurality such as three, and three contact members 642 may be connected to the adjusting member 643. Each contact member 642 is respectively in contact with the corresponding resistor body 641 to achieve stepless adjustment of the resistance value.

[0075] Referring to FIGS. 1, 31 to 33, a sixth embodiment of the braking device 10 of the present invention includes a shaft body 100, a housing 200, a magnetic induction mechanism 300, and an adjusting mechanism 650. The structures of the shaft body 100, the housing 200, and the magnetic induction mechanism 300 may be referred to the second embodiment of the braking device 10 described above and will not be repeatedly described herein. The adjusting mechanism 650 is connected to the magnetic induction mechanism 300 and is used to adjust the magnitude of the resistance.

[0076] In this embodiment, the adjusting mechanism 650 includes a resistor body 651, a contact member 652 for contacting the resistor body 651, and an adjusting member connected to the contact member 652. The contact member 652 is electrically connected to one end of the magnetic induction mechanism 300, and one end of the resistor body 651 is electrically connected to one end of the magnetic induction mechanism 300. The resistor body 651 is integrally provided, and by contacting the contact member 652 with the resistor body 651, the magnitude of the resistance value connected to the resistor body 651 can be changed. Thus, compared with the mode of providing a plurality of resistors and contacting and conducting through contacts, in this embodiment, by providing an arc-shaped contact point on the outer periphery of the resistor body 651 without interruption, the contact area between the contact member 652 and the resistor body 651 becomes larger, the reliability is higher, and the subsequent change in the magnitude of the resistance value connected to the resistor body 651 becomes easier. For example, by changing the position of the contact portion between the contact member 652 and the resistor body 651, the magnitude of the resistance value connected to the resistor body 651 can be changed.

[0077] In other embodiments, the resistor body 651 may be electrically connected to both ends of the magnetic induction mechanism 300 at both ends respectively, but is not limited herein.

[0078] In this embodiment, the adjusting member includes at least one key 653. The at least one key 653 is connected to a corresponding abutting member 652. The abutting member 652 is electrically connected to one end of the magnetic induction mechanism 300. One end of the resistor body 651 is electrically connected to one end of the magnetic induction mechanism 300. Thereby, when the at least one key 653 is pressed, the abutting member 652 can be conducted with the resistor body 651. Consequently, at least a part of the corresponding resistor body 651 as a load can be electrically connected to the magnetic induction mechanism 300, and the change of resistance can be realized. By providing the key 653 to realize the adjustment of the adjusting mechanism 650, the touch feeling of adjustment can be made clearer, and the gear adjustment can be made more reliable.

[0079] In other embodiments, both ends of the resistor body 651 may be electrically connected to both ends of the magnetic induction mechanism 300 respectively, but is not limited herein.

[0080] In this embodiment, the braking device 10 further includes a support member 654. The support member 654 is provided in a tubular shape. The resistor body 651 may be provided in a fan-shaped annular shape. The resistor body 651 is wound around the support member 654, thereby making the structure of the adjusting mechanism 650 compact and reducing the occupied space.

[0081] In this embodiment, an opening 6541 for passing a wiring for connecting the resistor body 651 and the magnetic induction mechanism 300 is formed in the support member 654, which can avoid the interference between the wiring and the resistor body 651, and further avoid short circuits, etc., and improve the safety of the braking device 10.

[0082] In this embodiment, the adjustment mechanism 650 may further include an elastic return assembly. The elastic return assembly includes a first limit plate 655 provided on the support member 654, a first limit slot 6551 on the first limit plate 655, a first elastic member 6552 between the support member 654 and the first limit plate 655, a limit block 6531 provided on the key 653, and a second elastic member 6532 sleeved on the key 653, so as to realize the limit and springback of the key 653. Specifically, reference may be made to the elastic return assembly in the third embodiment of the braking device 10 described above, and details will not be repeated here.

[0083] Referring to FIG. 34, in other embodiments, the number of resistor bodies 651 may be a plurality such as three, and a plurality of corresponding contact members 652 for respectively contacting the corresponding resistor bodies 651 are connected to the key 653, thereby realizing the adjustment of the resistance value.

[0084] Referring to FIGS. 1, 35 and 36, the seventh embodiment of the braking device 10 of the present invention includes a shaft body 100, a housing 200, a magnetic induction mechanism 300, and an adjustment mechanism 660. The structures of the shaft body 100, the housing 200, and the magnetic induction mechanism 300 may refer to the second embodiment of the braking device 10 described above, and details will not be repeated here. The adjustment mechanism 660 is connected to the magnetic induction mechanism 300 and is used to adjust the magnitude of the resistance.

[0085] In this embodiment, the adjustment mechanism 660 includes a resistor body 661, a contact member 662 that abuts against the resistor body 661, and an adjustment member connected to the contact member 662. The contact member 662 is electrically connected to one end of the magnetic induction mechanism 300, and one end of the resistor body 661 is electrically connected to one end of the magnetic induction mechanism 300. The resistor body 661 is integrally provided. By the abutment of the contact member 662 and the resistor body 661, the magnitude of the resistance value connected to the resistor body 661 can be changed. The contact area between the contact member 662 and the resistor body 661 is larger, the reliability is higher, and furthermore, the subsequent change of the magnitude of the resistance value connected to the resistor body 661 becomes easier. For example, the magnitude of the resistance value connected to the resistor body 661 can be changed by changing the position of the contact portion between the contact member 662 and the resistor body 661.

[0086] In this embodiment, the adjustment member includes at least two keys 663. The at least two keys 663 are respectively connected to the corresponding contact members 662. The at least two keys 663 are respectively provided with conduction portions 6631. The braking device further includes a connection portion 6611. The connection portion 6611 is electrically connected to one end of the magnetic induction mechanism 300. The resistor body 661 is electrically connected to one end of the magnetic induction mechanism 300. Thereby, when one of the at least two keys 663 is pressed, the conduction portion 6631 can be conducted with the connection portion 6611. By providing the keys 663, the adjustment of the adjustment mechanism 660 can be realized, the touch feeling of the adjustment can be made clearer, and the gear adjustment can be made more reliable.

[0087] In other embodiments, both ends of the resistor body 661 may be electrically connected to both ends of the magnetic induction mechanism 300 respectively, which is not limited herein.

[0088] In this embodiment, the at least two keys 663 may be arranged at intervals along a straight line, and the resistor body 661 is provided linearly. In other embodiments, the at least two keys 663 may be arranged along a curve or other linear shape, which is not limited herein.

[0089] In other embodiments, the adjusting member may include only one key 663. The key 663 is provided with a conduction part 6631. The braking device 10 further includes a connection part 6611. The connection part 6631 is electrically connected to one end of the magnetic induction mechanism 300. Both ends of the resistor body 661 are electrically connected to both ends of the magnetic induction mechanism 300 respectively. Thereby, when at least one key 663 is pressed, the conduction part 6631 can be conducted with the connection part 6631. Consequently, at least a part of the resistor body 661 corresponding to the load can be connected to the magnetic induction mechanism 300, and the change of resistance can be realized.

[0090] In this embodiment, the braking device 10 may further include an elastic return assembly. The elastic return assembly acts on at least two keys 663 respectively, so that when one of the at least two keys 663 is pressed, the other keys 663 can be bounced. Here, the elastic return assembly may include a carrier plate 664 and a first limit plate 665. For its specific structure, reference may be made to the elastic return assembly in the third embodiment of the braking device 10 described above, and it will not be repeatedly described here.

[0091] Referring to FIG. 37, in other embodiments, the number of resistor bodies 661 may be a plurality such as three. The plurality of resistor bodies 661 are provided at intervals. The key 663 is connected with a corresponding plurality of abutting members 662 to abut against the corresponding resistor bodies 661 respectively, thereby realizing the adjustment of the resistance value.

[0092] Referring to FIGS. 1, 38 and 39, the eighth embodiment of the braking device 10 of the present invention includes a shaft body 100, a housing 200, a magnetic induction mechanism 300 and an adjustment mechanism 670. For the structures of the shaft body 100, the housing 200 and the magnetic induction mechanism 300, reference may be made to the second embodiment of the braking device 10 described above, and it will not be repeatedly described here. The adjustment mechanism 670 is connected to the magnetic induction mechanism 300 and is used to adjust the magnitude of the resistance.

[0093] In this embodiment, the adjustment mechanism 670 may include a sensitive resistor 671. Both ends of the sensitive resistor 671 are electrically connected to both ends of the magnetic induction mechanism 300 respectively. The sensitive resistor 671 may be a piezoresistor, a photosensitive resistor, a humidity-sensitive resistor, a magnetic-sensitive resistor, or a force-sensitive resistor, etc., and its resistance value can be changed by the received changes in voltage, light, humidity, magnetic field strength, or force, thereby realizing the change in resistance. By providing the sensitive resistor 671, the adjustment of the adjustment mechanism 670 is realized, the structure of the adjustment mechanism 670 is simpler, the manufacturing is easier, the occupied space is smaller, and the structure of the braking device 10 becomes more compact.

[0094] In this embodiment, the adjustment mechanism 670 may further include a casing 672. Heat dissipation holes 6721 for dissipating the heat of the sensitive resistor 671 are formed in the casing 672, and problems such as the resistance value of the sensitive resistor 671 becoming unstable due to temperature rise can be avoided.

[0095] In this embodiment, the sensitive resistor 671 may be a force-sensitive resistor. By forming a pressing plate 6722 having a certain elasticity between the plurality of heat dissipation holes 6721, the pressing plate 6722 is deformed when receiving a force, and the force is transmitted to the sensitive resistor 671, thereby realizing the adjustment of the resistance value of the sensitive resistor 671.

[0096] Referring to FIGS. 1 and 40, a ninth embodiment of the braking device 10 of the present invention includes a shaft body 100, a housing 200, a magnetic induction mechanism 300, a rectifying mechanism 700, and an adjusting mechanism 680. The structures of the shaft body 100, the housing 200, and the magnetic induction mechanism 300 may be referred to the second embodiment of the braking device 10 described above, and will not be repeatedly described here. The rectifying mechanism 700 is electrically connected to the magnetic induction mechanism 300 to rectify the current of the magnetic induction mechanism 300. The adjusting mechanism 680 is connected to the magnetic induction mechanism 300 to adjust the magnitude of the resistance. By providing the rectifying mechanism 700, the outputs of a plurality of wirings of the magnetic induction mechanism 300 can be rectified, the structure of the adjusting mechanism 680 is simplified, the overall structure of the braking device 10 becomes simpler and more compact, and the occupied space is smaller.

[0097] In this embodiment, the magnetic induction mechanism 300 guides at least two wirings, and the rectifying mechanism 700 is electrically connected to at least two wirings to rectify the current on the at least two wirings. The first end of the rectifying mechanism 700 is electrically connected to the first end of the adjusting mechanism 680, and the second end of the rectifying mechanism 700 is electrically connected to the second end of the adjusting mechanism 680, thereby supplying the rectified current to the adjusting mechanism 680, and further using the adjusting mechanism 680 to adjust the resistance value connected to the rectifying mechanism 700.

[0098] In this embodiment, the rectifying mechanism 700 may include two first diodes 710 and two second diodes 720. The first ends of the two first diodes 710 are electrically connected to each other and electrically connected to the first end of the adjusting mechanism 680. The second ends of the two first diodes 710 are respectively electrically connected to two wirings. The first ends of the two second diodes 720 are respectively electrically connected to the two wirings. The second ends of the two second diodes 720 are electrically connected to each other and electrically connected to the second end of the adjusting mechanism 680, thereby rectifying the current output by the magnetic induction mechanism 300. For example, the alternating current power output by the magnetic induction mechanism 300 can be rectified into direct current power, and the adjustment process of the adjusting mechanism 680 can be made more stable.

[0099] Referring to FIGS. 41 and 42, in another specific embodiment, the rectifying mechanism 700 may include three first diodes 710 and three second diodes 720. The first ends of the three first diodes 710 are electrically connected to each other and electrically connected to the first end of the adjusting mechanism 680. The second ends of the three first diodes 710 are electrically connected to three wires respectively. The first ends of the three second diodes 720 are electrically connected to the three wires respectively. The second ends of the three second diodes 720 are electrically connected to each other and electrically connected to the second end of the adjusting mechanism 680. Thereby, the current output by the magnetic induction mechanism 300 can be rectified. For example, the three-phase output of the magnetic induction mechanism 300 can be rectified into a two-phase output, and adjustment can be realized by one resistor, and the structure of the adjusting mechanism 680 can be simplified.

[0100] In other embodiments, the rectifying mechanism 70 may include three or more first diodes 710 and second diodes 720, whereby the three-phase or more output of the magnetic induction mechanism 300 can be rectified, which is not limited herein.

[0101] In this embodiment, the adjusting mechanism 680 is provided with a sensitive resistor. The first end of the rectifying mechanism 700 is connected to the first end of the sensitive resistor, and the second end of the rectifying mechanism 700 is connected to the second end of the sensitive resistor. The sensitive resistor can change its resistance value, thereby realizing the change of the resistance. By providing the sensitive resistor, the adjustment of the adjusting mechanism 680 can be realized.

[0102] In other embodiments, the adjustment mechanism 680 may further include an adjustment member and a resistor, such as in the second and third embodiments of the braking device 10 as described above, or the adjustment mechanism 680 may further include a resistor body, a contact member that slides and contacts the resistor body, and an adjustment member connected to the contact member, such as in the fourth, fifth, sixth, and seventh embodiments of the braking device 10 as described above, which will not be repeatedly described herein.

[0103] Referring to FIGS. 1, 43, and 44, the tenth embodiment of the braking device 10 of the present invention includes a shaft body 100, a housing 200, a magnetic induction mechanism 300, an adjustment mechanism 690, a control mechanism 810, and a power storage mechanism 820. The structures of the shaft body 100, the housing 200, and the magnetic induction mechanism 300 may refer to the first embodiment of the braking device 10 described above, which will not be repeatedly described herein. The adjustment mechanism 690 is connected to the magnetic induction mechanism 300 to adjust the magnitude of the resistance. The control mechanism 810 is respectively connected to the adjustment mechanism 690 and the power storage mechanism 820. The control mechanism 810 is used to control the adjustment of the resistance of the adjustment mechanism 690 and can supply and store current to the power storage mechanism 820 when the current is equal to or greater than the current threshold value. By providing the control mechanism 810, automatic adjustment of the adjustment mechanism 690 can be realized, the intelligence level of the braking device 10 can be further improved, the application range of the braking device 10 becomes wider, the power storage mechanism 820 can be provided to store current, and when the power supplied by the magnetic induction mechanism 300 is insufficient, the control mechanism 810 supplies current to the control mechanism 810, so that the reliability of the braking device 10 is higher and the safety is better.

[0104] In this embodiment, a casing 691 may be further provided, and the adjustment mechanism 690, the control mechanism 810, and the power storage mechanism 820 may all be provided in the casing 691.

[0105] In this embodiment, the control mechanism 810 includes a main controller 811 and a power controller 812. The main controller 811 is connected to the adjustment mechanism 690. The power controller 812 is connected to the main controller 811 and is also connected to the magnetic induction mechanism 300 and the power storage mechanism 820 respectively. The power controller 812 receives the current supplied by the magnetic induction mechanism 300 and is used to supply at least a part of the current to the main controller 811, thereby maintaining the normal operation of the main controller 811. When the current is equal to or greater than the current threshold, another part of the current is supplied to the power storage mechanism 820 to realize power storage.

[0106] In this embodiment, the braking device 10 may further include a speed detection mechanism (not shown). The speed detection mechanism is connected to the control mechanism 810 via a wiring 813 and is used to detect the rotational speed of the housing 200. The control mechanism 810 is used to control the adjustment of the resistance of the adjustment mechanism 690 based on the rotational speed, thereby making the braking device 10 more intelligent.

[0107] In this embodiment, the speed detection mechanism may be provided on the housing 200 or on the braking device 10. The speed detection mechanism may be a pressure sensor, an image sensor, a photoelectric sensor, etc., and can detect the rotational speed of the housing 200 based on the magnitude of the received pressure, an image, a video, a light beam, etc.

[0108] In this embodiment, the adjustment mechanism 690 may include a resistor body and a contact member (not shown) that slides and contacts the resistor body. The first end of the magnetic induction mechanism 300 is connected to the first end of the resistor body, the second end of the magnetic induction mechanism 300 is connected to the contact member, or the second end of the magnetic induction mechanism 300 is connected to the contact member and the second end of the resistor body. The control mechanism 810 can control the sliding of the contact member relative to the resistor body to change the resistance value of the resistor body connected to the magnetic induction mechanism 300. Specifically, for the structure of the adjustment mechanism 690, reference may be made to the fourth, fifth, sixth, and seventh embodiments of the braking device 10 described above, and details will not be repeated here.

[0109] In other embodiments, the adjustment mechanism 690 may further include at least one resistor and an adjustment member. The first end of the at least one resistor is connected to the first end of the magnetic induction mechanism 300, the adjustment member is connected to the second end of the magnetic induction mechanism 300, and the control mechanism 810 controls the connection between the adjustment member and the first or second end of the at least one resistor to change the total resistance value of the resistor connected to the magnetic induction mechanism 300. Specifically, for the structure of the adjustment mechanism 690, reference may be made to the second and third embodiments of the braking device 10 described above, and details will not be repeated here.

[0110] In other embodiments, the adjustment mechanism 690 may further include a sensitive resistor and an adjustment member (not shown). Both ends of the magnetic induction mechanism 300 are respectively connected to both ends of the sensitive resistor, and the control mechanism 810 controls the adjustment member to change the resistance value of the sensitive resistor connected to the magnetic induction mechanism 300.

[0111] Referring to FIGS. 45 and 46, in other embodiments, the braking device 10 may further include a rectifying mechanism 700. The rectifying mechanism 700 is respectively connected to the magnetic induction mechanism 300 and the adjustment mechanism 690 and is used to rectify the current output by the magnetic induction mechanism 300. Here, for the structure of the rectifying mechanism 700, reference may be made to the ninth embodiment of the braking device 10 described above, and details will not be repeated here.

[0112] In this embodiment, the rectifying mechanism 700 rectifies at least two wires introduced from the magnetic induction mechanism 300 and then guides the two wires, which are electrically connected to both ends of the adjusting mechanism 690. In other embodiments, instead of providing the rectifying mechanism 700, three sets of resistors, resistor bodies or varistors may be directly provided on the adjusting mechanism 690 and electrically connected to the three wires led from the magnetic induction mechanism 300. Specifically, reference may be made to the above-described embodiments of the braking device 10, which will not be repeatedly described here.

[0113] Referring to FIGS. 1, 2 and 47, the eleventh embodiment of the braking device 10 of the present invention includes a shaft body 100, a housing 200, a magnetic induction member 310 and a magnet assembly 320. The housing 200 is sleeved on the shaft body 100 and arranged coaxially with the shaft body 100. The housing 200 is rotatable relative to the shaft body 100. A coil 311 is wound around the magnetic induction member 310. The magnet assembly 320 includes a plurality of magnets arranged at intervals along the circumferential direction of the shaft body 100. Here, one of the magnetic induction member 310 and the magnet assembly 320 is connected to the shaft body 100, and the other is connected to the housing 200. By detachably connecting the magnetic induction member 310 and / or the magnet assembly 320 to the shaft body 100 or the housing 200, when the housing 200 rotates relative to the shaft body 100, the coil 311 cuts the magnetic field formed by the magnet assembly 320, and a resistance opposite to the rotation direction of the housing 200 or the shaft body 100 can be generated. Moreover, by replacing the magnetic induction member 310 and / or the magnet assembly 320, the magnitude of the resistance can be changed, thereby adapting to the needs of different users and different environments and broadening the application range of the braking device 10.

[0114] In this embodiment, the braking device 10 may further include a carrier 330. The carrier 330 is detachably connected to the inside of the housing 200. A plurality of mounting grooves 331 are formed inside the carrier 330. The plurality of magnets of the magnet assembly 320 are respectively provided in the plurality of mounting grooves 331. By replacing the carrier 330 and the magnet assembly 320 carried thereon, the number, size, and arrangement structure of the magnets in the magnet assembly 320 can be changed, thereby changing the magnetic field generated by the magnet assembly 320, and further changing the resistance generated by the interaction between the magnetic induction member 310 and the magnet assembly 320 to realize the adjustment of the resistance.

[0115] In this embodiment, a first limit portion is provided on the carrier 330, and a second limit portion is provided on the housing 200. The first limit portion and the second limit portion cooperate to limit the carrier 330, avoiding the rotation of the carrier 330 relative to the housing 200 during the rotation process of the housing 200, making the magnetic field generated by the magnet assembly 320 more stable, and thus making the resistance generated by the interaction between the magnetic induction member 310 and the magnet assembly 320 more stable.

[0116] In this embodiment, the first limit portion may be a limit slot 332, and the second limit portion may be a limit protrusion 210. The limit protrusion 210 and the limit slot 332 extend along the axial direction of the housing 200, thereby realizing the limit of the carrier 330 along the circumferential direction of the shaft body 100. Its structure is simple, easy to manufacture, and has higher reliability.

[0117] In other embodiments, the first limit portion may be a limit protrusion, and the second limit portion may be a corresponding limit slot, which is not limited herein.

[0118] In this embodiment, the braking device 10 may further include a fixed ring 340. The fixed ring 340 covers one end of the carrier member 330 and is used to hold the magnet assembly 320 in the mounting groove 331, thereby realizing the limit of the magnet assembly 320 along the axial direction of the shaft body 100 and avoiding the magnets of the magnet assembly 320 from coming out of the mounting groove 331.

[0119] Referring to FIGS. 1, 2 and 48, the twelfth embodiment of the braking device 10 of the present invention includes a shaft body 100, a housing 200, a magnetic induction member 310, and a magnetic induction assembly 320. The housing 200 is sleeved on the shaft body 100 and is arranged coaxially with the shaft body 100. The housing 200 is rotatable relative to the shaft body 100. A coil 311 is wound around the magnetic induction member 310. The magnet assembly 320 includes a plurality of magnets arranged at intervals along the circumferential direction of the shaft body 100. Here, one of the magnetic induction member 310 and the magnet assembly 320 is connected to the shaft body 100, and the other is connected to the housing 200. By detachably connecting the magnetic induction member 310 and / or the magnet assembly 320 to the shaft body 100 or the housing 200, when the housing 200 rotates relative to the shaft body 100, the coil 311 cuts the magnetic field formed by the magnet assembly 320, generates a resistance opposite to the rotation direction of the housing 200, and the magnitude of the resistance can be changed by replacing the magnetic induction member 310 and / or the magnet assembly 320, thereby adapting to the needs of different users and different environments and expanding the application range of the braking device 10.

[0120] In this embodiment, the braking device 10 may further include a fixing member 110. The fixing member 110 is fixed on the shaft body 100, and the magnetic induction member 310 is detachably connected to the fixing member 110. Thereby, the magnetic induction member 310 can be disassembled and replaced from the shaft body 100 to change the number, size and arrangement structure of the magnets in the magnet assembly 320, change the magnetic field generated by the magnet assembly 320, and further change the resistance generated by the interaction between the magnetic induction member 310 and the magnet assembly 320, so as to realize the adjustment of the resistance.

[0121] In this embodiment, a first connection part is provided on the fixing member 110, and a second connection part is provided on the magnetic induction member 310. The first connection part and the second connection part cooperate to connect the fixing member 110 and the magnetic induction member 310, and it can be avoided that the magnetic induction member 310 rotates relative to the shaft body 100 during the rotation process of the housing 200. Thereby, the interaction between the magnetic induction member 310 and the magnet assembly 320 becomes more stable, and thus the generated resistance becomes more stable.

[0122] Referring also to FIG. 49, in this embodiment, the first connection part may be a connection groove 111, and the second connection part may be a connection protrusion 314. A first connection hole 315 is formed in the connection protrusion 314, and a second connection hole 112 is formed in the connection groove 111. Thereby, after the connection protrusion 314 and the connection groove 111 are cooperatively connected, they are fixed by a connection member (not shown) passing through the first connection hole 315 and the second connection hole 112. Its structure is simple, easy to manufacture, and has higher reliability.

[0123] In this embodiment, the opening direction of the connection groove 111 may be provided parallel to the circumferential direction of the shaft body 100, thereby facilitating the snap-fitting of the magnetic induction member 310 with the fixing member 110 after the magnetic induction member 310 is sleeved on the shaft body 100.

[0124] In other embodiments, the opening direction of the connection groove 111 may be further provided parallel to the axial direction of the shaft body 100, thereby facilitating the direct snap-fastening of the magnetic induction member 310 along the axial direction of the shaft body 100 together with the fixing member 110.

[0125] In this embodiment, both the first connection hole 315 and the second connection hole 112 may be threaded holes, and the connection member may be a screw.

[0126] In other embodiments, the first connection portion may be a connection protrusion, and the second connection portion may be a corresponding connection groove, which is not limited herein.

[0127] In other embodiments, the fixing member 110 and the magnetic induction member 310 may be connected by other detachable mechanisms such as snaps, which is not limited herein.

[0128] In other embodiments, both the magnetic induction member 310 and the magnet assembly 320 may have a detachable structure. For the specific structure, reference may be made to the 11th and 12th embodiments of the braking device 10 above, which is not limited herein.

[0129] Referring to FIGS. 1 and 2, the first embodiment of the wheel body assembly of the present invention includes a braking device 10. For the structure of the braking device 10, reference may be made to the embodiments of the braking device 10 above, and it will not be described repeatedly herein.

[0130] Here, the housing 200 of the braking device 10 is provided in an annular shape and can be used as the wheel body of the wheel body assembly. The braking device 10 can directly generate resistance to the wheel body to achieve a braking effect. Its braking force is not frictional braking and is related to the rotation of the housing 200, so it does not generate an emergency stop effect, has higher safety, can also reduce wear, and prolong the service life of the braking device 10. At the same time, its structure is simple and easy to manufacture.

[0131] Referring to FIG. 50, a second embodiment of the wheel body assembly of the present invention includes a braking device 10 and a wheel body 20. The wheel body 20 is connected to the housing 200 or the shaft body 100 of the braking device 10. The braking device 10 generates resistance against the wheel body by means of the housing 200 or the shaft body 100 to achieve a braking effect.

[0132] In this embodiment, since the braking device 10 and the wheel body 20 can be detachably connected, the user can choose whether to attach the braking device 10 as needed, and the applicable range can be made wider.

[0133] In this embodiment, since the braking device 10 can be directly connected to the wheel body 20 by the connecting rod 201, the braking effect on the wheel body 20 can be directly realized.

[0134] In other embodiments, since the braking device 10 can be connected to the wheel body 20 by a transmission device (not shown), it can adapt to different braking needs and broaden the applicable range.

[0135] Referring to FIG. 51, a first embodiment of the walking aid of the present invention includes a braking device 10 and a main body frame 30. The braking device 10 is rotatably connected to the bottom of the main body frame 30 and is used to move together with the main body frame 30 and / or drive the movement of the main body frame 30. In this embodiment, the number of the braking devices 10 is 2 because it is used as the front wheels of the walking aid. The walking aid further includes two casters 40 as the rear wheels. By using the braking device 10 as the front wheels, the steering operation of the walking aid can be made more energy-efficient. By using the casters 40 as the rear wheels, it can be facilitated that the casters 40 rotate flexibly together with the steering of the main body frame 30.

[0136] In other embodiments, by using two braking devices 10 as the rear wheels (not shown) and two casters 40 as the front wheels at the same time, the problem that the resistance instantaneously generated by the braking device 10 is too large and causes forward tipping or lateral tipping can be avoided.

[0137] In other embodiments, the number of the braking devices 10 may be four, that is, it can be used as the front wheel of the walking aid and also as the rear wheel of the walking aid, and the braking effect can be further improved.

[0138] When the housing 200 of the braking device 10 in this embodiment rotates relative to the shaft body 100, the coil 311 cuts the magnetic field formed by the magnet assembly 320, generates a resistance opposite to the rotation direction of the housing 200, and can play a braking role for the braking device 10. Also, its braking force is not frictional braking and is related to the rotation of the housing 200, so it does not generate an emergency stop effect, has higher safety, can also reduce wear, extends the service life of the braking device 10, and at the same time, its structure is simple and easy to manufacture.

[0139] Referring to FIG. 52, the second embodiment of the walking aid of the present invention includes a braking device 10 and a main body frame 50. The braking device 10 is rotatably connected to the bottom of the main body frame 50 and is used to move together with the main body frame 50 and / or is used to drive the movement of the main body frame 50.

[0140] In this embodiment, the braking device 10 can function as either the front wheel of the walking aid or the rear wheel of the walking aid. Specifically, reference can be made to the first embodiment of the above-mentioned walking aid, and the description will not be repeated here.

[0141] When the housing 200 of the braking device 10 in this embodiment rotates relative to the shaft body 100, the coil 311 cuts the magnetic field formed by the magnet assembly 320, generates a resistance opposite to the rotation direction of the housing 200, and can play a braking role for the braking device 10. Also, its braking force is not frictional braking and is related to the rotation of the housing 200, so it does not generate an emergency stop effect, has higher safety, can also reduce wear, extends the service life of the braking device 10, and at the same time, its structure is simple and easy to manufacture.

[0142] In other embodiments, the braking device 10 can also be applied to other types of walking aids and is not limited herein.

[0143] The above are only embodiments of the present invention and do not limit the patent scope of the present invention. Equivalent structures or equivalent process conversions made using the content of the specification and drawings of the present invention, or equivalent structures or equivalent process conversions directly or indirectly applied to other related technical fields, are all similarly included in the patent protection scope of the present invention.

Claims

1. A shaft body, A housing sleeved on the shaft body and arranged coaxially with the shaft body, which is rotatable relative to the shaft body, A magnetic induction mechanism including a magnetic induction member around which a coil is wound and a magnet assembly including a plurality of magnets arranged at intervals along the circumferential direction of the shaft body, When the housing rotates relative to the shaft body, the coil can cut the magnetic field formed by the magnet assembly to generate a resistance in a direction opposite to the rotation direction of the housing or the shaft body. One of the magnetic induction member and the magnet assembly is connected to the shaft body, and the other is a braking device connected to the housing, Further comprising an adjustment mechanism, the adjustment mechanism is connected to the magnetic induction mechanism and is used to adjust the magnitude of the resistance, The adjustment mechanism includes an adjustment member and at least one resistor. The adjustment member is electrically connected to the magnetic induction mechanism. A first connection portion is provided on the adjustment member, and a second connection portion is provided at one end of at least one of the resistors. The adjustment member can move relative to the resistor so that the first connection portion can be electrically connected to the second connection portion, Or The adjustment mechanism includes an adjustment member and at least one resistor. The adjustment member includes at least one key, and a conduction portion is provided on the key. The braking device further includes a first connection portion and a second connection portion arranged at intervals. The first connection portion and the second connection portion are electrically connected to both ends of the magnetic induction mechanism respectively. At least one of the resistors is electrically connected to the first connection portion. The key can be pressed so that the conduction portion conducts the first connection portion and the second connection portion, Or The adjustment mechanism includes a sensitive resistor, and both ends of the sensitive resistor are electrically connected to both ends of the magnetic induction mechanism respectively, Or The adjustment mechanism includes a resistor body, a contact member for contacting the resistor body, and an adjustment member connected to the contact member. The resistor body and the adjustment member are electrically connected to the magnetic induction mechanism respectively. The adjustment mechanism is used to adjust the magnitude of the resistance, A braking device characterized by the above.

2. The resistance has a forward relationship with the rotational speed of the housing or the shaft body The braking device according to claim 1, characterized in that...

3. The number of the magnets is an even number, and the plurality of magnets are arranged symmetrically with respect to the axis of the shaft body. The braking device according to claim 1, characterized in that...

4. The magnetic poles of the two magnets arranged symmetrically with respect to the axis are set in the same direction, and the magnetic poles of two adjacent magnets are set in opposite directions. The braking device according to claim 3, characterized in that...

5. The magnetic induction member includes a main body portion and a plurality of mounting portions provided at intervals along the outer periphery of the main body portion. The coil is wound around the mounting portion, and the maximum width of the coil on the mounting portion along the circumferential direction of the shaft body is equal to or greater than the width of the magnet along the circumferential direction of the shaft body, and the maximum length of the coil on the mounting portion along the axial direction of the shaft body is greater than or equal to the length of the magnet along the axial direction of the shaft body. The braking device according to claim 1, characterized in that...

6. The difference between the maximum width of the coil on the mounting portion along the circumferential direction of the shaft body and the width of the magnet along the circumferential direction of the shaft body is a, the width of the magnet along the circumferential direction of the shaft body is b, and the ratio of a to b is 10% or less. The braking device according to claim 5, characterized in that...

7. The number of the magnets is greater than the number of the mounting portions, and the difference between the number of the magnets and the number of the mounting portions is a positive integer. The braking device according to claim 5, characterized in that...

8. The coils on each of the mounting portions among the plurality of mounting portions form a closed loop, or the coils on at least two of the mounting portions among the plurality of mounting portions together form a closed loop, or all the coils on the plurality of mounting portions together form a closed loop. The braking device according to claim 5, characterized in that...

9. The mounting portion is provided in a shape of "I" or linearly. The braking device according to claim 5, characterized in that...

10. An opening is formed in the housing, and the braking device further includes a cover plate covering the opening. The braking device according to claim 1, characterized in that...

11. An opening is formed in the housing, and the cover plate is fixedly connected to the shaft body and the housing by screws respectively. The braking device according to claim 10, characterized in that...

12. Further comprising a first bearing and a second bearing, wherein the first bearing is provided between the shaft body and the housing, and the second bearing is provided between the shaft body and the cover plate. The braking device according to claim 10, characterized in that...

13. The magnetic induction member and / or the magnet assembly is detachably connected to the shaft body or the housing so that the magnitude of the resistance can be changed by replacing the magnetic induction member and / or the magnet assembly. The braking device according to claim 2, characterized in that...

14. Further comprising a rectifying mechanism, the rectifying mechanism being electrically connected to the magnetic induction member and the adjusting mechanism respectively for rectifying the current of the magnetic induction member. The braking device according to claim 1, characterized in that...

15. Further comprising a control mechanism and a power storage mechanism, the control mechanism being connected to the adjusting mechanism and the power storage mechanism respectively, the control mechanism being used to control the adjusting mechanism to adjust the resistance, and capable of supplying and storing current to the power storage mechanism when the current is equal to or greater than a current threshold value. The braking device according to claim 14, characterized in that...

16. Comprising the braking device according to claim 1, wherein the housing is provided in an annular shape for use as a wheel body. A wheel body assembly, characterized in that...

17. Comprising a main body frame and the wheel body assembly according to claim 16, wherein the wheel body assembly is rotatably connected to the bottom of the main body frame. An assistive walking device, characterized in that...

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