CN114569933A - Magnetic control resistance adjusting device for spinning - Google Patents
Magnetic control resistance adjusting device for spinning Download PDFInfo
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- CN114569933A CN114569933A CN202210195230.2A CN202210195230A CN114569933A CN 114569933 A CN114569933 A CN 114569933A CN 202210195230 A CN202210195230 A CN 202210195230A CN 114569933 A CN114569933 A CN 114569933A
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- magnetic control
- disc
- flywheel
- annular
- disk
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/005—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
- A63B22/0605—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing a circular movement, e.g. ergometers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention discloses a spinning magnetic control resistance adjusting device, which comprises a magnetic control flywheel for adjusting resistance, wherein the magnetic control flywheel comprises a metal flywheel and a magnetic control disc, the magnetic control disc and the metal flywheel form a main resistance adjusting mechanism, a magnetic control disc driving mechanism for driving the magnetic control disc to axially move along a central shaft, and a support frame for supporting the central shaft and further bearing the magnetic control flywheel and the magnetic control disc driving mechanism. The conductors are arranged on the cambered surfaces on the two sides of the magnet ring, and the radial swing of the magnet ring is changed into axial movement, so that the utilization rate of magnetic force lines is greatly improved, the magnetic field efficiency is improved, the resistance can be stably adjusted and linearly changed, the knee joint of an exerciser is protected, a protection mechanism is added, and machine damage or damage to the exerciser caused by control system failure can be prevented.
Description
Technical Field
The invention belongs to the technical field of fitness and sports equipment, and particularly relates to a magnetic control resistance adjusting device of a spinning.
Background
With the improvement of living standard, people pay more and more attention to physical health, which urges a lot of body-building sports equipment, such as spinning, elliptical machines, rowing machines and the like, which usually need to be provided with a damping device to adapt to human body exercise. The traditional damping device is mostly a magnetic control flywheel resistance adjusting device, and according to the working principle of the traditional damping device, the resistance adjustment is usually realized by adjusting the distance between a magnetic shoe and a conductor on a flywheel through a complex adjusting mechanism. In the current patent literature or other related literatures, the adjustment of the magnetic shoe is basically swing adjustment, that is, one end of the magnetic shoe is hinged and fixed, and the other end swings around a hinge shaft to a certain extent, so as to adjust the distance between the magnetic shoe and a conductor on a flywheel.
Traditional magnetic control flywheel resistance adjusting device, owing to need adjust the magnetic shoe, consequently the magnetic shoe is great apart from the distance of the conductor on the flywheel, leads to some magnetic field can not do work, influences the efficiency of resistance, and simultaneously, this kind of structure has great restriction to the control range of resistance, can only adjust in a certain extent, can not adapt to the crowd's that can not adjust the demand on a large scale. Secondly, the traditional magnetic shoe adjusting mechanism is complex, the output of the adjusting mechanism is not very stable, and no responsive protection mechanism exists, so that when some devices are out of control, the magnetic shoe is easily contacted with a conductor on the flywheel to damage the conductor.
Disclosure of Invention
The invention aims to provide a magnetic control resistance adjusting device of a spinning bicycle, which has the advantages of large resistance adjusting range, high magnetic field efficiency and safety protection mechanism.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a spinning magnetic control resistance adjusting device comprises a magnetic control flywheel, wherein the magnetic control flywheel comprises a metal flywheel and a magnetic control disc, the metal flywheel consists of a flywheel disc, a first annular cylinder seat and a second annular cylinder seat, the first annular cylinder seat and the second annular cylinder seat are positioned on one side surface of the flywheel disc, a first annular metal cylinder is fixed on the inner cylinder wall of the first annular cylinder seat, a second annular metal cylinder is fixed on the outer cylinder wall of the second annular cylinder seat, an annular groove is formed between the first annular metal cylinder and the second annular metal cylinder, the magnetic control disc consists of a disc body and a magnet ring positioned on one side of the disc body, the metal flywheel is driven by a central shaft, the magnetic control disc is axially and movably connected with the central shaft, and the magnet ring is positioned in the annular groove and moves in the depth direction of the annular groove along with the axial movement of the magnetic control disc;
the magnetic control disk driving mechanism is used for driving the magnetic control disk to move axially along the central shaft and comprises a driving motor, a lead screw driven by the driving motor and a magnetic control disk driven by the lead screw, wherein a disk body of the magnetic control disk is connected with the lead screw, the driving motor drives the lead screw to rotate, and then the lead screw drives the magnetic control disk to move along the central shaft;
and the support frame is used for supporting the central shaft and further bearing the magnetic control flywheel and the magnetic control disk driving mechanism.
Furthermore, the magnetic control disc driving mechanism further comprises a gear box, the gear box is fixed on the supporting frame and consists of a shell, a driving gear, an intermediate gear and a driven gear, the driving gear is located in the shell and is driven by a driving motor, the driving gear drives the driven gear through the intermediate gear, and the driven gear drives a lead screw so as to drive the magnetic control disc.
Furthermore, the number of the driven gears is three, the driven gears are distributed according to a regular triangle by taking the middle gear as a center, the number of the corresponding lead screws is also three, the three lead screws are all connected with the magnetic control disc body, and the center of the magnetic control disc body is distributed in a regular triangle.
Preferably, the driving motor is a stepping motor or a servo motor.
Further, the magnet ring comprises a plurality of arc-shaped magnets, and the intervals among the arc-shaped magnets are uniformly fixed on the disc body.
Preferably, the gaps between the arc surfaces on the two sides of the arc magnet and the first annular metal cylinder and the second annular metal cylinder are respectively 0.5-2 mm.
Furthermore, the magnetic control disc device further comprises a safety protection mechanism, wherein the safety protection mechanism mainly comprises two limit switches, the limit switches are fixed on the support frame and are respectively positioned on two sides below the disc body of the magnetic control disc, and when the magnetic control disc moves along the central shaft, the moving range of the magnetic control disc is limited.
Preferably, the limit switch is any one of a travel switch, a proximity switch and a photoelectric switch.
Preferably, the first annular metal cylinder and the second annular metal cylinder are made of copper.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the conductors are arranged on the cambered surfaces of the two sides of the magnet ring, and the radial swing of the magnet ring is changed into axial movement, so that the utilization rate of magnetic force lines is greatly improved, the efficiency of a magnetic field is improved, the resistance can be stably adjusted and linearly changed, the knee joint of an exerciser is protected, a protection mechanism is added, and machine damage or damage to the exerciser caused by failure of a control system can be prevented.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced to form a part of the present invention, and the exemplary embodiments and the description thereof are used for explaining the present invention, but do not constitute a limitation to the present invention.
The drawings are illustrated as follows:
FIG. 1 is a schematic sectional view of the maximum resistance state of the magnetic control resistance adjusting device according to the present invention;
FIG. 2 is a schematic front view of the metal flywheel of the present invention;
FIG. 3 is a schematic view of the front view of the disk of the present invention;
FIG. 4 is a schematic main sectional view of the gear box of the present invention;
FIG. 5 is a schematic cross-sectional view of the minimum resistance state of the magnetic control resistance adjusting device according to the present invention;
wherein: 1. the support frame, 2, a central shaft, 3, a gear box, 4, a magnetic control disc, 5, a metal flywheel, 6, a limit switch, 7, a driving motor, 31, a driving gear, 32, an intermediate gear, 331, a first driven gear, 332, a second driven gear, 333, a third driven gear, 34, a bearing, 35, a shell, 41, a magnet ring, 42, a disc body, 441, a magnet, 51, a first annular cylinder base, 52, a first annular metal cylinder, 53, a second annular metal cylinder, 54, a second annular cylinder base, 55, an annular groove, 56, a flywheel disc, 81, a first lead screw, 82, a second lead screw, 83 and a third lead screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments of the invention are only some, and not all, embodiments of the invention. Therefore, the following detailed description of the embodiments does not limit the scope of the present invention, but facilitates understanding of the present invention by those of ordinary skill in the art; all other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; unless explicitly defined otherwise.
The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; those skilled in the art will understand the specific meaning of the above terms in the present invention according to the specific embodiments and the practical applications.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless expressly stated otherwise; "plurality" means two or more.
The invention relates to a device for providing resistance for a spinning, in particular to a magnetic control resistance adjusting device, which is not only suitable for the spinning, but also suitable for other manually driven vehicles such as a mountain climbing vehicle and the like.
As shown in fig. 1 and 2, the main structure of the present invention includes:
the magnetic control flywheel comprises a metal flywheel and a magnetic control disc, the metal flywheel consists of a flywheel disc, a first annular cylinder seat and a second annular cylinder seat which are positioned on one side surface of the flywheel disc, the first annular cylinder seat and the second annular cylinder seat are integrally formed with the flywheel disc, the first annular cylinder seat, the second annular cylinder seat and the flywheel disc are concentric, wherein, a first annular metal cylinder is fixed on the inner cylinder wall of the first annular cylinder seat, a second annular metal cylinder is fixed on the outer cylinder wall of the second annular cylinder seat, an annular groove is formed between the first annular metal cylinder and the second annular metal cylinder, the magnetic control disk consists of a disk body and a magnet ring positioned on one side of the disk body, the metal flywheel is driven by a central shaft and is fixedly connected with the central shaft, the magnetic control disk is axially and movably connected with the central shaft, the magnet ring of the magnetic control disk is positioned in the annular groove and moves in the depth direction of the annular groove along with the axial movement of the magnetic control disk; the central line of the magnetic control disk is superposed with the axis of the central shaft, and the magnetic control disk is matched with the metal flywheel to form a magnetic control flywheel;
the magnetic control disk driving mechanism is used for driving the magnetic control disk to move axially along the central shaft and comprises a driving motor, a lead screw driven by the driving motor and a magnetic control disk driven by the lead screw, wherein a disk body of the magnetic control disk is connected with the lead screw, the driving motor drives the lead screw to rotate, and then the lead screw drives the magnetic control disk to move along the central shaft; in the invention, the position of the screw rod is relatively fixed relative to the central shaft, so that the position of the magnetic control disc relative to the metal flywheel is fixed in the radial direction of the central shaft;
and the support frame is used for supporting the central shaft and further bearing the magnetic control flywheel and the magnetic control disk driving mechanism.
Based on the mechanism, when the central shaft drives the metal flywheel to rotate, the first annular metal cylinder and the second annular metal cylinder on the metal flywheel rotate relative to the magnet ring, so that magnetic lines of force are cut, and resistance is formed. Therefore, the resistance of the invention is related to the depth of the magnet ring penetrating into the annular groove and is in direct proportion, and therefore, the resistance can be regulated and controlled by adjusting the position of the magnetic control disc on the central shaft. Because the conductors (namely the first annular metal cylinder and the second annular metal) are arranged on the two side surfaces of the magnet ring, compared with the traditional resistance device, the resistance value is doubled, so that the resistance can be better regulated and controlled, and the size and the volume of the device can be correspondingly reduced according to the resistance. Meanwhile, the depth of the magnet ring in the annular groove can be adjusted uniformly, so that the resistance can be adjusted smoothly and steplessly. For the present invention, the states of resistance adjustment are shown in fig. 1 and fig. 5, respectively, wherein fig. 1 is the maximum resistance state, and fig. 5 is the minimum resistance state.
For the magnetic control disk driving mechanism, in order to enable the magnetic control disk to stably and uniformly move when moving along the axis of the central shaft relative to the metal flywheel, the magnetic control disk driving mechanism is further provided with a gear box, as shown in fig. 4, the gear box is fixed on a supporting frame and consists of a shell and a driving gear, an intermediate gear and a driven gear, wherein the driving gear is driven by a driving motor, the driving gear drives the driven gear through the intermediate gear, and the driven gear drives a screw rod so as to drive the magnetic control disk. In order to enable the magnetic control disc to be stressed uniformly during moving, the number of the driven gears is three, namely a first driven gear, a second driven gear and a third driven gear, the three driven gears are arranged in a regular triangle distribution mode by taking the intermediate gear as a center and are driven by the intermediate gear to rotate along the same direction, and therefore three corresponding lead screws are also arranged, namely a first lead screw, a second lead screw and a third lead screw, are connected with the disc body of the magnetic control disc, and the center of the disc body of the magnetic control disc is in a regular triangle distribution mode. Therefore, when the three driven gears rotate, the three lead screws are driven to rotate, and the movement stress of the magnetic control disc is uniform and stable.
As a preferable technical scheme of the invention, the driving motor can adopt a stepping motor or a servo motor, so that the control is more accurate, the unit of the moving distance of the magnetic control disc can be controlled in a micron order, and the resistance adjustment is more uniform and stable.
As a preferred embodiment of the present invention, the magnet ring of the present invention is composed of a plurality of arc-shaped magnets, as shown in fig. 3, which are fixed on a disk body at uniform intervals. Therefore, the utilization rate of the magnet can be improved, and the using amount of the magnet can be reduced.
In order to ensure that the magnetic lines of force of the magnets can act, the preferred scheme of the invention is that the gaps between the arc-shaped surfaces on the two sides of the arc-shaped magnet and the first annular metal cylinder and the second annular metal cylinder are respectively 0.5-2 mm.
In order to prevent the control system (electrical part) from malfunctioning, the invention is also provided with a safety protection mechanism, the safety protection mechanism is used for protecting the driving motor and the magnetic control disk and preventing the driving motor from being burnt out and the magnetic control disk from being out of control or deformed and damaged, and the safety protection mechanism mainly comprises two limit switches, the limit switches are fixed on the supporting frame and are respectively positioned at two sides below the disk body of the magnetic control disk, and when the magnetic control disk moves along the central shaft, the movement range of the magnetic control disk is limited.
In a preferred embodiment of the present invention, the limit switch is any one of a travel switch, a proximity switch and a photoelectric switch. Of course, the limit switch may be other sensors or switches that can perform the limit protection function.
The spinning magnetic control resistance adjusting device of the embodiment of the application is described in detail, specific examples are applied in the description to explain the principle and the implementation mode of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (9)
1. The utility model provides a spinning magnetic control resistance adjusting device which characterized in that: the magnetic control flywheel comprises a metal flywheel and a magnetic control disc, wherein the metal flywheel consists of a flywheel disc, a first annular cylinder seat and a second annular cylinder seat, the first annular cylinder seat and the second annular cylinder seat are positioned on one side surface of the flywheel disc, a first annular metal cylinder is fixed on the inner cylinder wall of the first annular cylinder seat, a second annular metal cylinder is fixed on the outer cylinder wall of the second annular cylinder seat, an annular groove is formed between the first annular metal cylinder and the second annular metal cylinder, the magnetic control disc consists of a disc body and a magnet ring positioned on one side of the disc body, the metal flywheel is driven by a central shaft, the magnetic control disc is axially and movably connected with the central shaft, and the magnet ring is positioned in the annular groove and moves in the depth direction of the annular groove along with the axial movement of the magnetic control disc;
the magnetic control disk driving mechanism is used for driving the magnetic control disk to move axially along the central shaft and comprises a driving motor, a lead screw driven by the driving motor and a magnetic control disk driven by the lead screw, wherein a disk body of the magnetic control disk is connected with the lead screw, the driving motor drives the lead screw to rotate, and then the lead screw drives the magnetic control disk to move along the central shaft;
and the support frame is used for supporting the central shaft and further bearing the magnetic control flywheel and the magnetic control disk driving mechanism.
2. The spinning magnetic control resistance adjusting device of claim 1, characterized in that: the magnetic control disc driving mechanism further comprises a gear box, the gear box is fixed on the supporting frame, the gear box is composed of a shell, a driving gear, an intermediate gear and a driven gear, the driving gear is arranged in the shell and driven by a driving motor, the driving gear drives the driven gear through the intermediate gear, the driven gear drives a lead screw, and then the magnetic control disc is driven.
3. The spinning magnetic control resistance adjustment device of claim 2, characterized in that: the three driven gears are arranged and distributed according to a regular triangle by taking the middle gear as a center, the three corresponding lead screws are also arranged, the three lead screws are all connected with the disc body of the magnetic control disc, and the center of the disc body of the magnetic control disc is distributed in a regular triangle.
4. The spinning magnetic control resistance adjustment device of claim 2, characterized in that: the driving motor is a stepping motor or a servo motor.
5. The spinning magnetic control resistance adjustment device of claim 1, wherein: the magnet ring is composed of a plurality of arc magnets, and the intervals among the arc magnets are uniformly fixed on the disk body.
6. The spinning magnetic control resistance adjustment device of claim 5, characterized in that: gaps between the arc surfaces on the two sides of the arc magnet and the first annular metal cylinder and between the arc surfaces on the two sides of the arc magnet and the second annular metal cylinder are respectively 0.5-2 mm.
7. The spinning magnetic control resistance adjustment device of claim 1, wherein: the magnetic control disk is characterized by further comprising a safety protection mechanism, wherein the safety protection mechanism mainly comprises two limit switches, the limit switches are fixed on the support frame and are respectively located on two sides below the disk body of the magnetic control disk, and when the magnetic control disk moves along the central shaft, the moving range of the magnetic control disk is limited.
8. The spinning magnetic control resistance adjustment device of claim 7, wherein: the limit switch is any one of a travel switch, a proximity switch and a photoelectric switch.
9. The spinning magnetic control resistance adjustment device of claim 1, wherein: the first annular metal cylinder and the second annular metal cylinder are made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210195230.2A CN114569933B (en) | 2022-02-28 | 2022-02-28 | Magnetic control resistance adjusting device of spinning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210195230.2A CN114569933B (en) | 2022-02-28 | 2022-02-28 | Magnetic control resistance adjusting device of spinning |
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| Publication Number | Publication Date |
|---|---|
| CN114569933A true CN114569933A (en) | 2022-06-03 |
| CN114569933B CN114569933B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210195230.2A Active CN114569933B (en) | 2022-02-28 | 2022-02-28 | Magnetic control resistance adjusting device of spinning |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116099155A (en) * | 2023-01-05 | 2023-05-12 | 东台祺电电子科技有限公司 | Magnetic control brake |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6234938B1 (en) * | 1999-06-03 | 2001-05-22 | Lai-Hao Chen | Magnetic device for use in exercise bicycle or other exercise machines |
| US20020193207A1 (en) * | 2001-06-15 | 2002-12-19 | Leao Wang | Work-indicating unit of a magnetic control exercise apparatus |
| CN2566892Y (en) * | 2002-08-23 | 2003-08-20 | 惠阳国威运动器材有限公司 | Magnetic control resisting apparatus |
| CN210433896U (en) * | 2019-06-17 | 2020-05-01 | 德尔康健身器材(宁波)有限公司 | Flywheel resistance adjusting mechanism |
| CN211585054U (en) * | 2019-09-27 | 2020-09-29 | 宁波道康智能科技有限公司 | Internal magnetic control flywheel resistance adjusting device |
-
2022
- 2022-02-28 CN CN202210195230.2A patent/CN114569933B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6234938B1 (en) * | 1999-06-03 | 2001-05-22 | Lai-Hao Chen | Magnetic device for use in exercise bicycle or other exercise machines |
| US20020193207A1 (en) * | 2001-06-15 | 2002-12-19 | Leao Wang | Work-indicating unit of a magnetic control exercise apparatus |
| CN2566892Y (en) * | 2002-08-23 | 2003-08-20 | 惠阳国威运动器材有限公司 | Magnetic control resisting apparatus |
| CN210433896U (en) * | 2019-06-17 | 2020-05-01 | 德尔康健身器材(宁波)有限公司 | Flywheel resistance adjusting mechanism |
| CN211585054U (en) * | 2019-09-27 | 2020-09-29 | 宁波道康智能科技有限公司 | Internal magnetic control flywheel resistance adjusting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116099155A (en) * | 2023-01-05 | 2023-05-12 | 东台祺电电子科技有限公司 | Magnetic control brake |
| CN116099155B (en) * | 2023-01-05 | 2023-10-31 | 东台祺电电子科技有限公司 | Magnetic control brake |
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| CN114569933B (en) | 2023-08-01 |
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