Patent Application
20240277552
This application relates to the technical field of medical devices, in particular to a brake device, a wheel body assembly and a rollator.
Assistive walking devices such as walkers can assist people with mobility problems such as lower limb lesions or the elderly to walk. For example, the walker can be a support frame, the user can hold the support frame with both hands, and when walking, the user can lift the support frame to move, in order to achieve the purpose of moving the body.
The applicant of the present application has found in the long-term research and development that users need to constantly lift the support frame during walking, which is a large burden, slow moving speed and inconvenient use. At present, wheels are set at the bottom of the support frame to increase its flexibility, but the support force and speed provided to users during movement are uncontrollable, which may easily cause users to fall and have poor safety. If braking is carried out through the brake device, the operation requirements of the user are higher, and the emergency stop of the brake is also dangerous.
The present application provides a brake device, a wheel body assembly, and a rollator to solve the technical problem of the prior art of providing wheels on devices such as walkers resulting in poor safety.
To solve the above technical problems, one aspect of embodiments of the present application provides a brake device, comprising:
To solve the above technical problems, another aspect of embodiments of the present application provides a wheel body assembly, comprising:
To solve the above technical problems, another aspect of embodiments of the present application provides a rollator, including a main frame and a wheel body assembly as described above, the wheel body assembly rotatably connected to the bottom of the main frame.
The brake device of the present application includes a shaft body, a housing, a magnetic inductor and a magnet assembly, the housing sleeved outside the shaft body and configured coaxially with the shaft body, the housing being rotatable relative to the shaft body, the magnetic inductor having a coil wound thereon, the magnet assembly including a plurality of magnets spaced along the circumference of the shaft body, wherein one of the magnetic inductor and the magnet assembly is connected to the shaft body and the other is connected to the housing so that when the housing rotates relative to the shaft body, the coil is capable of cutting the magnetic field formed by the magnet assembly so as to produce resistance in the opposite direction of rotation of the housing or the shaft body, which can play a braking role on the wheel body integrated or connected with the brake device. And because the braking force is related to the rotation of the housing or shaft body, rather than friction braking, it will not produce an emergency stop effect, which is more safer and also can reduce wear and improve the service life of the brake device. Meanwhile the brake device is simple in structure and easy to prepare.
In order to illustrate the embodiments of the present application more clearly, below is a brief introduction of the accompanying drawings required for the description of the embodiments of the present application. It is evident that the accompanying drawings in the following description are only some embodiments of the present application. It will be appreciated by persons skilled in the art that other drawings can be obtained based on these drawings without any creative effort, wherein:
The following will be a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. It will be appreciated that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments described in the present application, persons of ordinary skill in the art can obtain all other embodiments without creative work, which are all within the protection scope of the embodiments of the present application.
The terms “first” and “second” in this application are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical characteristics indicated. In the description of the present application, “multiple” means at least two, e.g., two, three, etc., unless specifically specified otherwise. Furthermore, the terms “include” and “have,” and any variation thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or equipment that consists of a series of steps or units is not restricted to listed steps or units, but optionally includes steps or units that are not listed, or optionally includes additional steps or units that are inherent to these processes, methods, products, or equipment. The term “and/or”, however, is simply a description of the associated relationship of the associated objects, indicating that three relationships can exist. For example, A and/or B, which can mean: A alone, both A and B, and B alone. In addition, the character “/” in this application generally means that the associated objects are a kind of “or” relationship.
Referring to
In this embodiment, the brake device 10 may further include a tire 400. The tire 400 is sleeved outside the housing 200 and can have the effect of shock absorption.
Specifically, referring together to
In this embodiment, the resisting force is positively related to the rotation speed of the housing 200 or the shaft body 100, which can also be derived from Ftotal=2*nBLv, that is, the greater the rotation speed of the housing 200, the greater the resisting force generated by the magnetic field formed by the coil 311 cutting the magnet assembly 320 in the opposite direction of the rotation of the housing 200, which can provide constant braking force and better stability when the rotation speed of the brake device 10 is constant, and can provide greater braking force when the rotation speed of the brake device 10 becomes faster, thus preventing the brake device 10 from moving too fast and improving safety.
In this embodiment, the number of the magnets is even, and the plurality of magnets are symmetrically provided with respect to the axis of the shaft body 100, which can make the distribution of the magnetic field formed by the magnet assembly 320 more uniform, and thus make the resistance generated by the magnetic field formed by the coil 311 cutting the magnet assembly 320 more stable.
In this embodiment, the poles of the two magnets symmetrical to the shaft body 100 are set in the same direction, and the poles of the two adjacent magnets are set in the opposite direction, wherein the installation directions of the magnetic poles of the magnets are defined toward and away from the axis of the shaft body 100. That the poles of the two magnets are set in the same direction means the poles of both magnets are set toward or away from the axis of the shaft body 100, and the poles of the two magnets are set in the opposite direction means the pole of one of the two magnets is set toward the axis of the shaft body 100 and the pole of the other is set away from the axis of the shaft body 100. The above way of setting the magnets enables the magnetic field formed by the magnet assembly 320 to be distributed more evenly, which in turn makes the resisting force generated by the magnetic field formed by the coil 311 cutting the magnet assembly 320 more stable.
In this embodiment, the magnetic inductor 310 includes a main part 312 and a plurality of mounting parts 313 spaced along the outer circumference of the main part 312, and the coils 311 are wound on the mounting parts 313, which can make the relative position of the coils 311 to the magnetic inductor 310 more stable.
In this embodiment, the mounting parts 313 may be provided in an I-shaped configuration to facilitate winding of the coils 311 and to limit the coils 311 to prevent the coils 311 from falling off from the mounting parts 313 in the direction away from the shaft body 100, making the overall structure of the coils 311 and the magnetic inductor 310 more stable.
In other embodiments, the mounting parts 313 may also be provided in a linear pattern to enable winding of the coils 311, without limitation herein.
In this embodiment, the maximum width of the coils 311 on the mounting parts 313 along the circumference of the shaft body 100 is equal to the width of the magnets along the circumference of the shaft body 100, and the maximum length of the coils 311 on the mounting parts 313 along the axis of the shaft body 100 is greater than or equal to the length of the magnets along the axis of the shaft body 100, to enable the coils 311 to continuously cut the magnetic field formed by the magnet assembly 320 during movement relative to the magnets, thereby continuously generating resisting force, resulting in better stability of the resisting force.
In other embodiments, the maximum width of the coils 311 on the mounting parts 313 along the circumference of the shaft body 100 may also be greater than the width of the magnets along the circumference of the shaft body 100, without limitation herein.
In this embodiment, the difference between the maximum width of the coils 311 on the mounting parts 313 along the circumference of the shaft body 100 and the width of the magnets along the circumference of the shaft body 100 is a, and the width of the magnets along the circumference of the shaft body 100 is b, wherein the ratio of a to b is less than or equal to 10%, such as 10%, 8%, or 5%. When a is 0, the coils 311 are able to continuously cut the magnetic field formed by the magnet assembly 320 during the movement relative to the magnets; when a is greater than 0, both sides of the coils 311 will be in the area corresponding to the same magnetic poles at the same time for a certain period of time, and the current generated on the coils 311 is 0 and the resisting force is interrupted.
In this embodiment, the number of the magnets is greater than the number of the mounting parts 313, and the difference between the number of the magnets and the number of the mounting parts 313 is a positive integer, which can make the magnetic field generated by the magnets continue to act on the coils 311 without interruption, thus continuously generating resistance and making resistance more stable.
In this embodiment, all of the coils 311 on the plurality of mounting parts 313 together form a closed loop. Specifically, all the coils 311 may be connected directly without other devices. In other embodiments, external devices such as switches, resistors, etc. may also be connected, but the closed loop in this embodiment does not include devices such as drivers, i.e., the current generated by the coils 311 in this embodiment is used only or primarily for generating amperage.
In other embodiments, it is also possible to form a closed loop for the coils 311 on each of the plurality of mounting parts 313, or for the coils 311 on every at least two of the plurality of mounting parts 313 to collectively form a closed loop, without limitation herein.
In this embodiment, the housing 200 forms an accommodating space that is provided with an opening (not shown in the figure) on one side of the housing 200. The magnetic inductor 310 and the magnet assembly 320 are set inside the accommodating space. The brake device 10 further includes a cover plate 510 that covers the opening to protect the magnetic inductor 310 and the magnet assembly 320 and other components, making the appearance of the brake device 10 more regular.
In this embodiment, the connection between the cover plate 510 and the shaft body 100, and the connection between the cover plate 510 and the housing 200, can be fixed by screws, respectively. In other embodiments, the cover plate 510 and the housing 200 can also be connected by snap, welding or paste, etc., without limitation herein.
In this embodiment, the brake device 10 may further include a first bearing 520 and a second bearing 530. The first bearing 520 is arranged between the shaft body 100 and the housing 200, and the second bearing 530 is arranged between the shaft body 100 and the cover plate 510. By setting the first bearing 520 and the second bearing 530, it can not only reduce the friction between the shaft body 100 and the housing 200, and the friction between the shaft body 100 and the cover plate 510, but also support the shaft body 100, and extend the service life of the shaft body 100, the housing 200 and the cover plate 510.
Referring to
Referring to
In this embodiment, the brake device 10 may further include a first support pipe 613, wherein the at least one resistor 612 is arranged on the first support pipe 613. The adjustment member 611 is provided in a ring shape and can rotate relative to the first support pipe 613. The first connection part 6111 is a groove formed on the outer periphery of the adjustment member 611. The outer circumference surface of the adjustment member 611 is insulated except the groove. The groove is provided for electric conducting. The second connection part 6121 includes an abutting part 6122 and a first elastic part 6123, wherein the abutting part 6122 is electrically connected with the resistor 612. The first elastic part 6123 is used to provide elasticity to the abutting part 6122 so that the abutting part 6122 abuts the outer periphery of the adjustment member 611, and when the first connection part 6111 rotates opposite to the second connection part 6121, the abutting part 6122 can abut against the first connection part 6111, thus enabling the abutting part 6122 to be electrically connected to the first connection part 6111.
In this embodiment, an annular groove 6112 is formed on the outer periphery of the adjustment member 611. The first connection part 6111 is invaginated relative to the annular groove 6112, and the end of the abutting part 6122 is provided in an arc-shaped projection so that at least part of the abutting part 6122 is embedded in the annular groove 6112, which can realize the restriction of the abutting part 6122 along the axis of the first support pipe 613, preventing the abutting part 6122 from separating from the adjustment member 611 and improving the reliability of the brake device 10.
In this embodiment, the brake device 10 may further include a second support tube 614 and a knob 615 connected with the second support tube 614. The second support tube 614 is nested with the first support tube 613, and the adjustment member 611 is arranged on the second support tube 614 so that the adjustment member 611 can rotate with the knob 615, so that the knob 615 can be turned by force and then drive the adjustment member 611 to rotate to achieve adjustment. By setting the knob 615 to achieve the adjustment of the adjustment mechanism 610, it can make the adjustment operation more convenient, and the knob 615 occupies less space, making the overall structure of the adjustment mechanism 610 more compact.
Referring to
Specifically, in this embodiment, the opening 6161 includes a plurality of holding ports 6162 spaced along the circumference of the first support tube 613. When the limit part 6141 rotates to the holding port 6162, the compression distance of the second elastic part 6142 is 0, so that the limit part 6141 is separated from the shell 616, or the limit part 6141 abuts against the shell 616, but the force acting on the shell 616 is 0, and meanwhile the first connection part 6111 abuts against one of the second connection parts 6121: when the limit part 6141 rotates between the two holding ports 6162, the limit part 6141 abuts against the shell 616 and the force acting on the shell 616 is greater than 0, and meanwhile the first connection part 6111 is not in contact with one of the second connection parts 6121, so that the knob 615 is rotated in such a way that the user can perceive whether the knob 615 is turned to a predetermined gear during the process.
In other embodiments, the adjustment member 611 may also be a slideway provided in a straight or curved shape, and the adjustment member 611 may slide relative to the resistor 612 to enable the second connection parts 6121 to be electrically connected to the first connection part 6111.
In this embodiment, the number of resistors 612 is multiple, and multiple resistors 612 form multiple resistor groups. Each resistor group includes at least one resistor 612. Multiple resistor groups are spaced along the axial direction of the first support tube 613. The number of adjustment members 611 is multiple, which is the same as the number of resistor groups. The multiple adjustment members 611 are spaced along the axial direction of the first support tube 613, corresponding to the resistor groups respectively, which can access more loads with different resistance values for the magnetic induction mechanism 300, thus making the adjustment of resisting force more flexible, which has wider range and better adaptability.
Referring to
In other embodiments, the magnetic induction mechanism 300 may also directly lead out two wires to connect with the adjustment mechanism 610, or the magnetic induction mechanism 300 may also lead out two or three wires to connect with the adjustment mechanism 610 through two wires after the rectification mechanism (not shown in the figure), without limitation herein.
Referring to
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, which is provided with a conduction part 6211. The brake device 10 further includes a first connection part 6221 and a second connection 6222 part, provided at intervals. The first connection part 6221 is electrically connected to one end of the magnetic induction mechanism 300 through the resistor 622, and the second connection part 6222 is electrically connected to the other end of the magnetic induction mechanism 300. The key 621 can be pressed to make the conduction part 6211 connect the first connection part 6221 to the second connection part 6222 electrically, and then the corresponding resistor 622 can be connected to the magnetic induction mechanism 300 as a load to realize the change of resisting force. By setting the key 621 to realize the adjustment of the adjustment mechanism 620, it can make the touch of adjustment more obvious and the gear adjustment more reliable.
In other embodiments, one end of the resistor 622 can be connected to one end of the magnetic induction mechanism 300 via the first connection part 6221, and the other end of the resistor 622 is connected to the other end of the magnetic induction mechanism 300 via the second connection part 6222. The key 621 can be pressed to make the conduction part 6211 connect the first connection part 6221 to the second connection part 6222 electrically, which in turn is a short circuit for the resistor 622 to achieve a change in the load connected to the magnetic induction mechanism 300, thereby achieving the change of resisting force.
In this embodiment, the adjustment member includes at least two keys 621, which are provided with a conduction part 6211. The number of the first connection part 6221 and the second connection part 6222 is at least two. The two first connection parts 6221 are connected to the two ends of the at least one resistor 622, so that when one of the at least two keys 621 is pressed, the conduction part 6211 can make one of the at least two first connection parts 6221 connect to the second connection part 6222 electrically, and then the corresponding resistor 622 can be connected to the magnetic induction mechanism 300 as a load to achieve the change of resistance.
In this embodiment, the at least two keys 621 may be spaced along a straight line. In other embodiments, the at least two keys 621 may also be aligned along a curve or other linear pattern, without limitation herein.
Referring to
In this embodiment, the key 621 includes a key body 6212 and a button 6213 arranged at one end of the key body 6212, and the conduction part 6211 is arranged at the other end of the key body 6212. The rebound assembly may include a carrying plate 623 and a first limit plate 624. The first limit plate 624 is formed with a first limit slot 6241 which is inverted L-shaped or similar inverted L-shaped. The first limit plate 624 includes a limit part 6242 corresponding to the first limit slot 6241. A first elastic part 6244 is provided between the carrying plate 623 and the first limit plate 624. A limit block 6214 is also provided on the key body 6212, and a second elastic part 6215 is provided on the outside of 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 the key 621 being pressed, the second elastic part 6215 is compressed to produce deformation, and the limit block 6214 acts on the limit key 6242, causing the first elastic part 6244 to produce deformation, and the first limit plate 624 slides relative to the carrying plate 623 (e.g., slides to the left in
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 to facilitate the slide of the limit block 6214 along the inclined surface 6243 to snap into the first limit slot 6241, which can make the process of pressing the key 621 smoother.
In this embodiment, a holding slot 6245 is also provided on the first limit plate 624, and a touching column 6231 is provided on the carrying plate 623. The first elastic part 6244 and the touching column 6231 are both placed in the holding slot 6245, and the touching column 6231 is used to abutting against the first elastic part 6244 to make the structure and position of the first elastic part 6244 more stable during compressions.
Referring to
In this embodiment, a second limit slot 6232 may further be provided on the carrying plate 623, and the limit block 6214 can be held in the second limit slot 6232 to realize the limit on the vertical plane (horizontal plane as shown in
In this embodiment, the key body 6212 is cylindrically shaped, and the second limit slot 6232 can also limit the rotation of the key body 6212 to avoid the rotation of the key body 6212 causing the limit block 6214 to be staggered with the corresponding first limit slot 6241, thus causing the limit block 6214 to be unable to be pressed into the first limit slot 6241, which can improve the reliability of the rebound assembly.
In other embodiments, corresponding limit slots and limit bulges (not shown in the figure) may further be provided on the key shell 626 which carries the key body 6212 and the key body 6212, respectively, so as to realize the limit on the vertical plane of key 621 along its pressing direction.
In other embodiments, the key body 6212 may also be directly set as a rectangular column or other special-shaped column to prevent the key body 6212 from rotating, without limitation herein.
Referring to
In this embodiment, the second limit plate 625 may be provided with an inclined surface 6252, and the inclined surface 6252 can be used to guide the limit block 6214 to facilitate the slide of the limit block 6214 along the inclined surface 6252 to snap into the third limit slot 6251, which can make the process of pressing the key 621 smoother.
Referring to
Referring to
In this embodiment, the adjustment mechanism 630 includes a resistor body 631, an abutting member 632 sliding against the resistor body 631, and an adjustment member 633 connected to the abutting member 632. The resistor body 631 and the adjustment member 633 are electrically connected to the magnetic induction mechanism 300, respectively. The resistor body 631 is integrated and the abutting member 632 is able to be slidingly connected to the accessed resistor body 631 to achieve stepless adjustment of the resistance value of the resistor body 631 accessed, thus enabling stepless adjustment of resisting force and further expanding the range of application of the brake device 10.
In this embodiment, the brake device 10 further includes a support member 634. The resistor body 631 is arranged on the support member 634. The support member 634 is provided with an opening 6341 for the wire connecting the resistor body 631 and the magnetic induction mechanism 300 to pass through, which can avoid the wire interfering with the resistor body 631 or even causing a short circuit, etc., and improve the safety of the brake device 10.
In this embodiment, the brake device 10 may further include a limit member 635, which is provided corresponding to the opening 6341, for limiting the abutting member 632, so that the abutting member 632 can remain in contact with the resistor body 631, to avoid separating from the resistor body 631, causing problems such as circuit disconnection and improving the reliability of the brake device 10.
In this embodiment, the support member 634 can be set in a tubular shape, the resistor body 631 is set in a fan ring shape, and the resistor body 631 is wound on the support member 634, making the adjustment mechanism 630 compact and reducing the occupied space.
In this embodiment, the abutting member 632 is a resilient piece that can resiliently abut against the resistor body 631, so that the abutting member 632 can remain abutting against the resistor body 631 and is not easily detached.
In this embodiment, the abutting member 632 is provided along the circumferential extension of the support member 634, which is more conducive to the abutting member 632 remaining abutted to the resistor body 631 during rotation relative to the resistor body 631, more reliable, and more convenient for the abutting member 632 to rotate relative to the resistor body 631.
In this embodiment, the adjustment member 633 may include a knob, which is arranged at one end of the support member 634 and can rotate relative to the support member 634 to drive the abutting member 632 to slide relative to the resistor body 631, so as to adjust the magnitude of the resistor connected to the magnetic induction mechanism 300. By setting the knob to achieve the adjustment of the adjustment mechanism 630, it can make the adjustment operation more convenient, and the knob occupies less space, making the overall structure of the adjustment mechanism 630 more compact.
In this embodiment, the brake device 10 may further include a shell 636, which is sleeved outside the support member 634. The knob is arranged on the shell 636. The shell 636 is provided with a through hole 6361 formed on the end face of the knob. The knob is connected with the abutting member 632 through a connecting member 637 penetrating the through hole 6361, which can avoid the interference between the connecting member 637 and other parts, so that the knob rotation process is smoother.
In this embodiment, the brake device 10 may further include a cover body (not shown in the figure), which is arranged on the shell 636 to protect and dust-proof the adjustment mechanism 630 and to make the appearance of the brake device 10 more regular.
Referring to
Referring to
In this embodiment, the adjustment mechanism 640 includes a resistor body 641, an abutting member 642 sliding against the resistor body 641, and an adjustment member 643 connected to the abutting member 642. The abutting member 642 is electrically connected to one end of the magnetic induction mechanism 300, and one end of the resistor body 641 is electrically connected to the other end of the magnetic induction mechanism 300. The resistor body 641 is integrated and the abutting member 642 is able to be slidingly connected to the resistor body 641 to achieve stepless adjustment of the resistance value of the accessed resistor body 641, thus enabling stepless adjustment of resisting forces and further expanding the range of application of the brake device 10.
In other embodiments, both ends of the resistor body 641 may be electrically connected to each end of the magnetic induction mechanism 300 respectively, without limitation here.
In this embodiment, the brake device 10 may further include a shell 644, which is used to form a housing space to accommodate the resistor body 641. A sliding slot 6441 is provided with the shell 644. The adjustment member 643 includes a handle. The adjustment member 643 is arranged outside the shell 644, and is connected to the abutting member 642 through a connection rod 645 penetrating the sliding slot 6441, so that the adjustment member 643 can be stressed to move the abutting member 642 along the sliding slot 6441, so as to achieve the adjustment of the resistance value of the resistor body 641. By setting the adjustment member 643 sliding to realize the adjustment of the adjustment mechanism 640, it can be easily for the user to hold in hands, making the adjustment operation more convenient.
In this embodiment, the abutting member 642 may be electrically connected to the magnetic induction mechanism 300 via a conductive slide (not shown in the figure) provided in the shell 644, or it may be directly electrically connected to the magnetic induction mechanism 300 via a wire, without limitation herein.
Referring to
Referring to
In this embodiment, the adjustment mechanism 650 includes a resistor body 651, an abutting member 652 for abutting against the resistor body 651, and an adjustment member connected to the abutting member 652. The abutting 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 the other end of the magnetic induction mechanism 300. By setting the integrated resistor body 651 and the abutting member 652 abutting against the resistor body 651, the resistance value of the resistor body 651 accessed can be changed. Compared with the way of setting multiple resistors and contacting through contacts, in this embodiment, because the outer periphery of the resistor body 651 can be provided with uninterrupted arc contacts, the contact area between the abutting member 652 and the resistor body 651 is larger and more reliable, and it is easy to subsequently change the resistance value of the resistor body 651 accessed. For example, the resistance value of the resistor body 651 accessed can be changed by changing the contacting position of the abutting member 652 and the resistor body 651.
In other embodiments, both ends of the resistor body 651 may be electrically connected to each end of the magnetic induction mechanism 300 respectively, without limitation here.
In this embodiment, the adjustment member includes at least one key 653. The at least one key 653 is connected to the corresponding abutting member 652. The abutting 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 the other end of the magnetic induction mechanism 300, so that when the at least one key 653 is pressed, the abutting member 652 is connected to the resistor body 651 electrically, and then at least part of the corresponding resistor body 651 is electrically connected to the magnetic induction mechanism 300 as a load to realize the change of resisting force. By setting the key 653 to realize the adjustment of the adjustment mechanism 650, it can make the touch of adjustment more obvious and the gear adjustment more reliable.
In other embodiments, both ends of the resistor body 651 may be electrically connected to each end of the magnetic induction mechanism 300 respectively, without limitation here.
In this embodiment, the brake device 10 may further include a support member 654, which is set in a tubular shape. The resistor body 651 is set in a fan ring shape, and the resistor body 651 is wound on the support member 654, making the adjustment mechanism 650 compact and reducing the occupied space.
In this embodiment, the support member 654 is provided with an opening 6541 for the wire connecting the resistor body 651 and the magnetic induction mechanism 300 to pass through, which can avoid the wire interfering with the resistor body 651 or even causing a short circuit, etc., and improve the safety of the brake device 10.
In this embodiment, the adjustment mechanism 650 may further include a rebound assembly, which includes a first limit plate 655 provided on the support member 654. The limit and rebound of the key 653 is achieved by a first limit slot 6551 on the first limit plate 655, a first elastic part 6552 between the support member 654 and the first limit plate 655, the limit block 6531 provided on the key 653, and a second elastic part 6532 set on the key 653. Specifically, please refer to the rebound assembly in the third embodiment of the brake device 10 above, which will not be repeated here.
Referring to
Referring to
In this embodiment, the adjustment mechanism 660 includes a resistor body 661, an abutting member 662 for abutting against the resistor body 661, and an adjustment member connected to the abutting member 662. The abutting 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 the other end of the magnetic induction mechanism 300. By setting the integrated resistor body 661 and the abutting member 662 abutting against the resistor body 661 to change the resistance value of the resistor body 661 accessed, the contact area between the abutting member 662 and the resistor body 661 is larger and more reliable, thus making it easy to subsequently change the resistance value of the resistor body 661 accessed. For example, the resistance value of the resistor body 661 accessed can be changed by changing the contacting position of the abutting member 662 and the resistor body 661.
In this embodiment, the adjustment member includes at least two keys 663. The at least two keys 663 are connected to the corresponding abutting members 652 respectively. The at least two keys 663 are provided with a conduction part 6631 respectively. The brake device 10 further includes a connection part 6611. The connection part 6611 is electrically connected to one end of the magnetic induction mechanism 300, and one end of the resistor body 661 is electrically connected to the other end of the magnetic induction mechanism 300, so that when one of the at least two keys 663 is pressed, the conduction part 6631 can be connected to the connection part 6611 electrically. By setting the keys 663 to realize the adjustment of the adjustment mechanism 660, it can make the touch of adjustment more obvious and the gear adjustment more reliable.
In other embodiments, both ends of the resistor body 661 may be electrically connected to each end of the magnetic induction mechanism 300 respectively, without limitation here.
In this embodiment, the at least two keys 663 may be spaced along a straight line, and the resistor body 661 is set in a straight line. In other embodiments, the at least two keys 663 may also be aligned along a curve or other linear pattern, without limitation herein.
In other embodiments, the adjustment member may include only one key 663. The key 663 is provided with a conduction part 6631. The brake device 10 further includes a connection part 6611. The connection part 6611 is electrically connected to one end of the magnetic induction mechanism 300, and the two ends of the resistor body 661 are electrically connected to the two ends of the magnetic induction mechanism 300, so that when at least one key 663 is pressed, the conduction part 6611 can connect with the connection part 6631 electrically, and thus at least part of the corresponding resistor body 661 can be connected to the magnetic induction mechanism 300 as a load to achieve a change in resisting force.
In this embodiment, the brake device 10 may further include a rebound assembly, which can act 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 popped up, wherein the rebound assembly may include a carrying plate 664 and a first limit plate 665, the specific structure of which is described in the rebound assembly in the third embodiment of the brake device 10 above and will not be repeated here.
Referring to
Referring to
In this embodiment, the adjustment mechanism 670 can include a sensitive resistor 671, the two ends of the sensitive resistor 671 are electrically connected to the two ends of the magnetic induction mechanism 300 respectively, the sensitive resistor 671 can be a pressure-sensitive resistor, light-sensitive resistor, moisture-sensitive resistor, magnetic resistor or force-sensitive resistor, etc., which can change the resistance value according to the received voltage, light, humidity, magnetic field strength or change of force, so as to achieve a change in resisting force. By setting the sensitive resistor 671 to realize the adjustment of the adjustment mechanism 670, it can make the structure of the adjustment mechanism 670 more simple, easy to prepare, and occupy less space, making the structure of the brake device 10 more compact.
In this embodiment, the adjustment mechanism 670 may also include a shell 672, on which heat dissipation holes 6721 are provided for heat dissipation of the sensitive resistor 671 to avoid problems such as unstable resistance value due to high temperature rise of the sensitive resistor 671.
In this embodiment, the sensitive resistor 671 may be a force-sensitive resistor, and a press plate 6722 with certain elasticity may be provided between the plurality of heat dissipation holes 6721 to enable the press plate 6722 to accept a force to produce a deformation to transfer the force to the sensitive resistor 671 to achieve the adjustment of the resistance value of the sensitive resistor 671.
Referring to
In this embodiment, the magnetic induction mechanism 300 leads out at least two wires. The rectifier mechanism 700 is electrically connected to the at least two wires to rectify the current on the at least two wires. The first end of the rectifier mechanism 700 is electrically connected to the first end of the adjustment mechanism 680, and the second end of the rectifier mechanism 700 is electrically connected to the second end of the adjustment mechanism 680 for delivering the rectified current to the adjustment mechanism 680, and then the resistance value connected to the rectifier mechanism 700 can be adjusted by the adjustment mechanism 680.
In this embodiment, the rectifier 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 adjustment mechanism 680, the second ends of the two first diodes 710 are electrically connected to two wires respectively, the first ends of the two second diodes 720 are electrically connected to two wires respectively, and the second ends of the two second diodes 720 are electrically connected to each other and electrically connected to the second end of the adjustment mechanism 680, thus enabling rectification of the current output from the magnetic induction mechanism 300, such as rectification of the AC current output from the magnetic induction mechanism 300 into DC current, which can make the adjusting process of the adjustment mechanism 680 more stable.
Referring to
In other embodiments, the rectification mechanism 700 may also include more than three first diodes 710 and three second diodes 720 to rectify the output of more than three phases of the magnetic induction mechanism 300, without limitation here.
In this embodiment, the adjustment mechanism 680 includes a sensitive resistor. The first end of the rectifier mechanism 700 is connected to the first end of the sensitive resistor, and the second end of the rectifier mechanism 700 is connected to the second end of the sensitive resistor. The sensitive resistor is able to change the resistance value so as to realize the change of resistance. The adjusting of the adjustment mechanism 680 is realized by setting the sensitive resistor.
In other embodiments, the adjustment mechanism 680 may further include an adjustment member and a resistor, such as the second embodiment, the third embodiment of the brake device 10 described above; or the adjustment mechanism 680 may further include a resistor body, an abutting member sliding against the resistor body, and an adjustment member connected to the abutting member, such as the fourth embodiment, the fifth embodiment, the sixth embodiment, the seventh embodiment of the brake device 10 described above, which will not be repeated here.
Referring to
In this embodiment, a shell 691 may further be provided. The adjustment mechanism 690, the control mechanism 810 and the power storage mechanism 820 may all be arranged inside the shell 691.
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 connected to the magnetic induction mechanism 300 and the power storage mechanism 820 respectively. The power controller 812 is used to receive the current provided by the magnetic induction mechanism 300 and deliver at least a portion of the current to the main controller 811 to maintain the normal operation of the main controller 811 and deliver another portion of the current to the power storage mechanism 820 when the current is greater than or equal to the current threshold to achieve the storage of electricity.
In this embodiment, the brake device 10 may further include a speed detection mechanism (not shown in the figure), which is connected with the control mechanism 810 through the wire 813. The speed detection mechanism is for detecting the rotational speed of the housing 200, and the control mechanism 810 is for controlling the adjustment mechanism 690 to adjust resistance according to the rotational speed, which makes the brake device 10 more intelligent.
In this embodiment, the speed detection mechanism can be set on the housing 200 or the brake device 10. The speed detection mechanism can be a pressure sensor, image sensor, photoelectric sensor, etc., and the rotational speed of the housing 200 can be detected by the received pressure, pictures, videos or light, etc.
In this embodiment, the adjustment mechanism 690 may include a resistor body and an abutting member sliding against the resistor body (not shown in the figure). The first end of the magnetic induction mechanism 300 is connected to the first end of the resistor body, and the second end of the magnetic induction mechanism 300 is connected to the abutting member: or the second end of the magnetic induction mechanism 300 is connected to the abutting member and the second end of the resistor body. The control mechanism 810 controls the abutting member to slide relative to the resistor 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, it can be referred to the fourth embodiment, the fifth embodiment, the sixth embodiment, and the seventh embodiment of the brake device 10 above, and will not be repeated here.
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 adjustment member connected to the first end or the 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 adjusting mechanism 690, it can be referred to the second and third embodiments of the brake device 10 described above, and will not be repeated here.
In other embodiments, the adjustment mechanism 690 may further include a sensitive resistor and an adjustment member (not shown in the figure). The two ends of the magnetic induction mechanism 300 are connected to the two ends of the sensitive resistor respectively. The control mechanism 810 controls the adjustment member to change the resistance value of the sensitive resistor connected to the magnetic induction mechanism 300.
Referring to
In this embodiment, the rectifier mechanism 700 rectifies current form at least two wires introduced from the magnetic induction mechanism 300 and then leads out two wires to be electrically connected to the two ends of the adjustment mechanism 690. In other embodiments, instead of rectifier mechanism 700, three sets of resistors, resistor bodies or sensitive resistors may be provided directly in the adjustment mechanism 690 to electrically connect with the three wires introduced from the magnetic induction mechanism 300, specifically as described in the above-mentioned embodiment of the brake device 10, which will not be repeated here.
Referring to
In this embodiment, the brake device 10 may further include a carrying member 330, which is removably connected to the inside of the housing 200. A plurality of mounting slots 331 are provided at the inner side of the carrying member 330, and a plurality of magnets of the magnet assembly 320 are provided inside the plurality of mounting slots 331. By replacing the carrying member 330 and the magnet assembly 320 on the carrying member 330, the number, size and arrangement structure of the magnets in the magnet assembly 320 can be changed to change the magnetic field generated by the magnet assembly 320, and then change the resisting force generated by the interaction between the magnetic inductor 310 and the magnet assembly 320 to achieve the adjustment of resisting force.
In this embodiment, the carrying member 330 is provided with a first limit part, and the housing 200 is provided with a second limit part. The first limit part engages with the second limit part to limit the carrying member 330, which can avoid rotation of the carrying member 330 relative to the housing 200 in the process of rotation of the housing 200, making the magnetic field generated by the magnet assembly 320 more stable, and then making the resisting force generated by interaction of the magnetic inductor 310 and the magnet assembly 320 more stable.
In this embodiment, the first limit part may be a limit groove 332, the second limit part may be a limit bulge 210, and the limit bulge 210 and the limit groove 332 are arranged along the axial direction of the housing 200 to achieve limiting of the carrying member 330 along the circumference of the shaft body 100, which has a simple structure, is easy to prepare, and has a high reliability.
In other embodiments, the first limit part may also be a limit bulge and the second limit part may be a corresponding limit groove, without limitation herein.
In this embodiment, the brake device 10 may further include a retaining ring 340, which covers one end of the carrying member 330 to clamp the magnet assembly 320 in the mounting slot 331, to achieve an axial limit of the magnet assembly 320 along the axis of the shaft body 100 and to avoid the magnet of the magnet assembly 320 from falling out of the mounting slot 331.
Referring to
In this embodiment, the brake device 10 may further include a retainer 110 which is fixed on the shaft body 100. The magnetic inductor 310 is removably connected to the retainer 110 so that the magnetic inductor 310 can be removed from the shaft body 100 for replacement, and the number, size and arrangement structure of the magnets in the magnet assembly 320 can be changed to change the magnetic field generated by the magnet assembly 320, and then change the resistance generated by the interaction of the magnetic inductor 310 and the magnet assembly 320 to achieve the adjustment of resistance.
In this embodiment, the retainer 110 is provided with a first connection part and the magnetic inductor 310 is provided with a second connection part. The first connection part engages with the second connection part to fix the retainer 110 with the magnetic inductor 310, which can prevent the magnetic inductor 310 from rotating relative to the shaft 100 during the rotation of the housing 200, making the interaction between the magnetic inductor 310 and the magnet assembly 320 more stable, and thus making the resistance generated more stable.
Referring to
In this embodiment, the opening orientation of the connection groove 111 may be set parallel to the circumferential direction of the shaft body 100 to facilitate the snap of the magnetic inductor 310 with the retainer 110 after the magnetic inductor 310 is sleeved on the shaft body 100.
In other embodiments, the opening orientation of the connection groove 111 may also be set parallel to the axial direction of the shaft body 100 to allow the magnetic inductor 310 to snap directly to the retainer 110 along the axial direction of the shaft body 100.
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.
In other embodiments, the first connection part may also be a connection bulge and the second connection part may also be a corresponding connection groove, without limitation here.
In other embodiments, the retainer 110 and the magnetic inductor 310 may also be connected by other removable mechanisms such as snaps, which are not limited here.
In other embodiments, both the magnetic inductor 310 and the magnet assembly 320 may be of removable construction, as described in the eleventh and twelfth embodiments of the brake device 10 above, and will not be limited herein.
Referring to
The housing 200 of the brake device 10 therein is set in a circular shape, which can be used as the wheel body of the wheel body assembly. The brake device 10 can directly produce resistance to the wheel body, so as to achieve the braking effect. Because the braking force is related to the rotation of the housing 200, rather than friction braking, it will not produce an emergency stop effect, which is more safer and also can reduce wear and improve the service life of the brake device 10. Meanwhile its structure is simple and easy to prepare.
Referring to
In this embodiment, the brake device 10 may be removably connected with the wheel body 20, allowing the user to choose whether to install the brake device 10 as required, which has a wider application.
In this embodiment, the brake device 10 may be directly connected to the wheel body 20 through the connection rod 201 to directly achieve the braking effect on the wheel body 20.
In other embodiments, the brake device 10 can also be connected to the wheel body 20 via a transmission device (not shown in the figure) to accommodate different braking needs and expand the range of application.
Referring to
In other embodiments, the two brake devices 10 may also be used as rear wheels (not shown in the figure), while the two universal wheels 40 are used as front wheels, which can avoid the problem of forward or sideways rollover caused by the excessive resistance generated by the brake devices 10 instantaneously.
In other embodiments, the number of brake devices 10 may be 4, that is, as the front wheels and rear wheels of the rollator, which can further improve the braking effect.
When the housing 200 of the brake device 10 in this embodiment rotates relative to the shaft body 100, the coils 311 are capable of cutting the magnetic field formed by the magnet assembly 320, thus generating resistance in the opposite direction of the rotation of the housing 200, which can play a braking role for the brake device 10, and because the braking force is related to the rotation of the housing 200, rather than friction braking, it will not produce an emergency stop effect, which is more safer and also can reduce wear and improve the service life of the brake device 10. Meanwhile its structure is simple and easy to prepare.
Referring to
In this embodiment, the brake devices 10 can be used as both the front and rear wheels of the rollator, as described above in the first embodiment of the walker, and will not be repeated here.
When the housing 200 of the brake device 10 in this embodiment rotates relative to the shaft body 100, the coils 311 are capable of cutting the magnetic field formed by the magnet assembly 320, thus generating resistance in the opposite direction of the rotation of the housing 200, which can play a braking role for the brake device 10, and because the braking force is related to the rotation of the housing 200, rather than friction braking, it will not produce an emergency stop effect, which is more safer and also can reduce wear and improve the service life of the brake device 10. Meanwhile its structure is simple and easy to prepare.
In other embodiments, the brake device 10 may also be used in other types of mobility aids and will not be limited here.
The above mentioned is only the implementation method of the present application, and is not intended to limit the scope of the present application. Any equivalent structure or equivalent process transformation using the contents of the specification of the present application and the accompanying drawings, or any direct or indirect application in other related technical fields, is included in the protection scope of the present application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202110932033.X | Aug 2021 | CN | national |
This application claims priority to PCT Application No. PCT/CN2021/127109 filed on Oct. 28, 2021, which claims priority to Chinese Patent Application No. 202110932033.X filed on Aug. 13, 2021. The entire contents both of which are hereby incorporated by reference.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/127109 | 10/28/2021 | WO |
