Magnetic control brake mechanism for fitness equipment
By employing a magnetically controlled braking mechanism that rigidly connects the traction rope to the human body in fitness equipment, the intermediate buffer spring is eliminated. Utilizing the shape design of the cam guide groove, precise control of resistance adjustment is achieved, solving the problems of uneven resistance variation and insufficient precision control in existing technologies. This provides a wider stroke range and more uniform resistance adjustment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG TRILLION SPORTS HEALTH SERVICE CO LTD
- Filing Date
- 2023-11-14
- Publication Date
- 2026-07-28
AI Technical Summary
The magnetic control mechanisms of existing fitness equipment have problems with uneven resistance changes and insufficient precision control, especially in rope climbing machines. Uneven changes in the magnet coverage area lead to uneven resistance changes, and the rigidly connected elastic rope cannot achieve precise control through the cooperation of the tension spring and the return gravity column.
A magnetic brake mechanism for fitness equipment is adopted, which is rigidly connected to the human body through a traction rope, eliminating the intermediate buffer spring. The design of a large-stroke cam guide groove shape is used to achieve precise control of resistance adjustment. By utilizing the cooperation of the cam guide groove and the traction rope, the predetermined resistance curve can be achieved.
It achieves precise control of resistance adjustment, has a wide stroke range, more uniform resistance adjustment, and more uniform resistance change of the magnetic control mechanism, thus meeting the requirements of precise control.
Smart Images
Figure CN117323614B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of fitness equipment technology, and in particular relates to a magnetic brake mechanism for fitness equipment. Background Technology
[0002] A rope climbing machine is a fitness device that allows users to perform continuous rope climbing movements through a rotating rope. During use, a magnetic control mechanism is required to control the resistance of the moving parts connected to the aluminum disc by adjusting the area of the magnetic field lines cut by the rotating aluminum disc.
[0003] Existing magnetic control mechanisms, such as the invention patent with application number CN112891813A, provide a rope climbing machine, in which the resistance adjustment frame rotates around a certain pivot point. The disadvantage is that when the elastic rope is pulled at a uniform speed, the coverage area of the magnet on the aluminum disc changes unevenly, resulting in uneven resistance changes.
[0004] CN216497234U: It uses a parallelogram mechanism to make the magnet cut into the aluminum disc at a uniform speed. However, it has a drawback: the connection between the elastic rope at point 3 and the human body is rigid. In order to change it to a flexible connection, a tension spring is added in the middle. However, by cooperating with the return gravity column or a return tension spring with the same function as the gravity column, it is not possible to achieve precise and uniform control of the parallelogram. This mechanism can only partially improve the mechanism of "CN112891813A", but it is not thorough and cannot achieve precise control.
[0005] Therefore, how to provide a large stroke range to accurately control the resistance generated by the magnetic control mechanism is a technical problem that needs to be solved. Summary of the Invention
[0006] To address at least one of the technical problems mentioned above, this invention provides a magnetically controlled braking mechanism for fitness equipment. This mechanism features a traction rope that can be rigidly connected to the human body, eliminating the need for an additional buffer spring. The traction rope stroke can be very large; when the fixed end of the traction rope is fixed to the traction pulley, the stroke can be reduced, resulting in a wide stroke design range. Resistance adjustment is more precise, and a predetermined resistance curve can be achieved through the design of the cam guide groove shape.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: a magnetically controlled brake mechanism for fitness equipment, comprising a frame, an aluminum disc fixing shaft system, an adjustable brake pulley, a drive cam mechanism, and a traction rope. The frame includes a base, a vertical rod in the middle of the base, a first mounting plate mounted on the top of the vertical rod, a second mounting plate between the middle of the vertical rod and the middle of the first mounting plate, and a third mounting plate between the end of the first mounting plate and the end of the base. The first mounting plate is used to mount the adjustable brake pulley, the second mounting plate is used to mount the aluminum disc fixing shaft system, and the third mounting plate is used to mount the drive cam mechanism. The cam plate of the drive cam mechanism is provided with a traction rope fixing end sleeve, which is used to mount the traction rope.
[0008] Furthermore, the adjustable brake pulley includes a rocker arm, a drive linkage frame, and a drive linkage. The rocker arm is mounted on the third mounting plate of the frame via a fixed bearing sleeve. The rocker arm includes a rocker arm body plate, a rocker arm shaft one, and a rocker arm shaft two. The rocker arm shaft one is mounted on the upper end of the rocker arm body plate. One end of the rocker arm shaft one is connected to the third mounting plate, and the other end is connected to the drive linkage frame.
[0009] Furthermore, the drive linkage frame includes a drive linkage, a magnet assembly fixing frame, a track bearing, and a brake pad. The drive linkage is an inverted L-shape. One end of the drive linkage is connected to the third mounting plate of the frame via a rocker arm, and the other end of the drive linkage is connected to the second mounting plate of the frame via a brake spring. A magnet assembly fixing frame is provided in the middle of the drive linkage, and the bottom end of the drive linkage is installed in conjunction with the cam guide groove of the cam plate via a track bearing. A brake pad is installed on the magnet assembly fixing frame, and the brake pad has a set distance from the end face of the aluminum disc.
[0010] Furthermore, one end of the brake spring is fixedly mounted on the side of the second mounting plate via a brake spring fixing seat, and the other end is connected to the bottom end of the drive linkage.
[0011] Furthermore, the drive cam mechanism includes a cam plate, a cam guide groove, a traction rope fixing end sleeve, a disc edge groove plastic part, a cam flange welded shaft, a reset tension spring rope winding wheel, a reset tension spring rope fixing rotating sleeve, a reset tension spring rope, a reset rope movable pulley, and a reset tension spring; the axis of the cam plate is mounted in the middle of the third mounting plate via the cam flange welded shaft; a cam guide groove is provided at a set distance from the axis at the center of the cam plate, and a trajectory bearing for the drive connecting rod is installed in the cam guide groove; the cam guide groove is arc-shaped, and a disc edge groove plastic part is provided on the outer end face of the cam; a traction rope fixing end sleeve is installed in the disc edge groove plastic part, and one end of the traction rope is installed... The traction rope is fixed at one end and then extends a predetermined length around the outer side of the cam's disc groove plastic part to form a handle for gripping. The disc groove plastic part has a groove-shaped structure. The other end of the flange welded shaft of the cam plate is equipped with a reset spring rope winding wheel. The outer side of the reset spring rope winding wheel is provided with a reset spring rope fixing sleeve. The reset spring rope is installed on the reset spring rope fixing sleeve. The reset spring rope passes around the reset rope movable pulley and is connected to the reset spring rope mounting post. The reset rope movable pulley is installed at one end of the reset spring, and the other end of the reset spring is installed on the reset spring mounting post, which is located at the right end of the base.
[0012] Furthermore, a frame fixing bearing sleeve one is installed in the middle of the front of the second mounting plate on the frame, a frame fixing bearing sleeve two is installed on the upper part of the third mounting plate, a frame fixing bearing sleeve three is fixed on the mounting crossbar of the adjustable brake pulley, a brake spring fixing seat is installed on the lower part of the side of the second mounting plate, and a reset spring pull rope mounting post is installed on the back of the right end of the base.
[0013] The beneficial effects of this invention are:
[0014] This invention provides a magnetically controlled braking mechanism for fitness equipment, which features a traction rope that can be rigidly connected to the human body without the need for an additional buffer spring. The traction rope stroke can be very large, and when the fixed end of the traction rope is fixed to the traction pulley, the stroke can be reduced, resulting in a wide range of stroke design. The resistance adjustment is more precise, and a predetermined resistance curve can be achieved through the design of the cam guide groove shape.
[0015] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.
[0017] Figure 1This is a front structural schematic diagram of the magnetic brake mechanism for fitness equipment of the present invention;
[0018] Figure 2 This is a schematic diagram of the rear structure of the magnetic brake mechanism for fitness equipment of the present invention;
[0019] Figure 3 This is a front view of the rear of the magnetic brake mechanism for fitness equipment according to the present invention;
[0020] Figure 4 yes Figure 3 A cross-sectional view of section BB;
[0021] Figure 5 yes Figure 3 A cross-sectional view at point CC;
[0022] Figure 6 yes Figure 3 A cross-sectional view of point AA;
[0023] Figure 7 This is a front view of the initial braking state of the magnetic brake mechanism for fitness equipment of the present invention.
[0024] Figure 8 This is a schematic diagram of the rear structure of the magnetic brake mechanism for fitness equipment in the initial braking state according to the present invention.
[0025] Figure 9 This is a front view of the final state of the magnetic brake mechanism for fitness equipment of the present invention.
[0026] Figure 10 This is a schematic diagram of the rear structure of the magnetic brake mechanism for fitness equipment of the present invention in its final state;
[0027] Figure 11 This is a front view of the magnetic brake mechanism for fitness equipment of the present invention in an intermediate state.
[0028] Figure 12 This is a schematic diagram of the back structure of the magnetic brake mechanism for fitness equipment of the present invention in an intermediate state.
[0029] The components include: 1. Frame; 1.1 Frame fixing bearing sleeve one; 1.2 Frame fixing bearing sleeve two; 1.3 Frame fixing bearing sleeve three; 1.4 Brake spring fixing seat; 1.5 Return spring mounting post; 1.6 Return spring pull rope mounting post; 2. Aluminum disc fixing shaft system; 2.1 Aluminum disc; 2.2 Flange welded shaft; 2.3 Power input pulley; 3. Adjustable brake pulley; 3.1 Rocker arm; 3.1.1 Rocker arm body plate; 3.1.2 Rocker arm rotating shaft one; 3.1.3 Rocker arm rotating shaft two; 3.2 Drive linkage frame; 3.2.1 Drive linkage; 3.2.2 Magnet assembly. 3.2.3 Fixed frame; 3.2.4 Brake pad; 3.3 Brake tension spring; 4. Drive cam mechanism; 4.1 Cam plate; 4.1.1 Cam guide groove; 4.1.2 Traction rope fixing end sleeve; 4.2 Disc edge groove plastic part; 4.3 Flange welded shaft; 4.4 Spacer; 4.5 Reset tension spring rocker arm; 4.6 Reset tension spring rope winding wheel; 4.7 Reset tension spring rope fixing rotating sleeve; 4.8 Reset tension spring rope; 4.9 Reset rope movable pulley; 4.10 Reset tension spring; 5. Traction rope; 5.1 Traction rope fixing end; 5.2 Traction rope traction end. Detailed Implementation
[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0031] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0033] In this invention, terms such as "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "side," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only to facilitate the description of the structural relationships of the various components or elements of this invention and do not specifically refer to any component or element in this invention. They should not be construed as limiting the invention.
[0034] In this invention, terms such as "fixed connection," "connected," and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.
[0035] like Figures 1-12 As shown, this embodiment provides a magnetically controlled brake mechanism for fitness equipment, including a frame, an aluminum disc fixing shaft system, an adjustable brake pulley, a drive cam mechanism, and a traction rope. The frame includes a base with a vertical rod in the middle. A first mounting plate is installed at the top of the vertical rod, a second mounting plate is provided between the middle of the vertical rod and the middle of the first mounting plate, and a third mounting plate is provided between the end of the first mounting plate and the end of the base. The first mounting plate is used to install the adjustable brake pulley, the second mounting plate is used to install the aluminum disc fixing shaft system, and the third mounting plate is used to install the drive cam mechanism. The cam plate of the drive cam mechanism is provided with a traction rope fixing end sleeve, which is used to install the traction rope.
[0036] The adjustable brake pulley includes a rocker arm, a drive linkage frame, a drive linkage, a magnet assembly mounting bracket, a track bearing, a brake pad, and a brake tension spring. The rocker arm is mounted on the third mounting plate of the frame via a frame fixing bearing sleeve. There are two rocker arms: one rocker arm is mounted on the third mounting plate via a frame fixing bearing sleeve two, and the other rocker arm is mounted on the mounting crossbar via a frame fixing bearing sleeve three. The rocker arm includes a rocker arm body plate, a rocker arm pivot one, and a rocker arm pivot two. The rocker arm pivot one is mounted on the upper end of the rocker arm body plate. One end of the rocker arm pivot one is connected to the third mounting plate, and the other end is connected to the drive linkage frame. The two rocker arms are arranged in a parallelogram pattern, and the connection end of the two rocker arms is located at the top of the drive linkage of the drive linkage frame.
[0037] The drive linkage frame includes a drive linkage, a magnet assembly fixing frame, a track bearing, and a brake pad. The drive linkage is an inverted L-shape. One end of the drive linkage is connected to the third mounting plate of the frame via a rocker arm, and the other end of the drive linkage is connected to the second mounting plate of the frame via a brake spring. A magnet assembly fixing frame is provided in the middle of the drive linkage, and the bottom end of the drive linkage is installed in conjunction with the cam guide groove of the cam plate via a track bearing. A brake pad is installed on the magnet assembly fixing frame, and the brake pad has a set distance from the end face of the aluminum disc. The brake pad is used to provide friction for the rotation of the aluminum disc.
[0038] One end of the brake spring is fixedly mounted on the side of the second mounting plate via a brake spring fixing seat, and the other end is connected to the bottom end of the drive linkage; the adjustable brake pulley, driven by the brake spring, moves toward the aluminum disc, and the trajectory bearing is subjected to the action of the cam guide groove, which allows the magnet assembly fixing frame to move along a specific trajectory, and the two ends are limited.
[0039] The aluminum disc fixed shaft system includes an aluminum disc, an aluminum disc flange welded shaft, and a power input pulley. The aluminum disc is mounted on the second mounting plate via the aluminum disc flange welded shaft. A power input pulley is installed at one end of the aluminum disc flange welded shaft. The power input pulley is used to connect a motor to drive the aluminum disc to rotate.
[0040] The driving cam mechanism includes a cam plate, a cam guide groove, a traction rope fixing sleeve, a disc edge groove plastic part, a cam flange welded shaft, a spacer, a reset spring rocker, a reset spring rope winding wheel, a reset spring rope fixing rotating sleeve, a reset spring rope, a reset rope movable pulley, and a reset spring. The axis of the cam plate is mounted in the middle of the third mounting plate via the cam flange welded shaft. A cam guide groove is provided at a set distance from the axis at the center of the cam plate. The trajectory bearing of the driving connecting rod is installed in the cam guide groove. The cam guide groove is arc-shaped. A disc edge groove plastic part is provided on the outer end face of the cam. A traction rope fixing sleeve is installed in the disc edge groove plastic part. One end of the traction rope... Installed on the fixed end sleeve of the traction rope, and then extending a set length from the plastic part of the disc rim groove on the outer side of the cam to provide a handle for a person to grip. The plastic part of the disc rim groove has a groove-shaped structure. The other end of the flange welded shaft of the cam plate is equipped with a reset spring rope winding wheel. The outer side of the reset spring rope winding wheel is provided with a reset spring rope fixing sleeve. The reset spring rope is installed on the reset spring rope fixing sleeve. The reset spring rope passes around the reset rope movable pulley and is connected to the reset spring rope mounting post. The reset rope movable pulley is installed at one end of the reset spring, and the other end of the reset spring is installed on the reset spring mounting post. The reset spring mounting post is located at the right end of the base.
[0041] A frame fixing bearing sleeve one is installed in the middle of the front of the second mounting plate on the frame, a frame fixing bearing sleeve two is installed on the upper part of the third mounting plate, a frame fixing bearing sleeve three is fixed on the mounting crossbar of the adjustable brake pulley, a brake spring fixing seat is installed on the lower part of the side of the second mounting plate, and a reset spring pull rope mounting column is installed on the back of the right end of the base.
[0042] By pulling the traction end of the traction rope, the main pull rod can be moved through the traction pulley, so that the resistance adjustment brake part can move towards the aluminum disc along a specific trajectory and effectively brake in the final braking state. Note that the bearing of the braking position trajectory does not contact the frame fixed cam limit plate.
[0043] This mechanism features a traction rope that can be rigidly connected to the human body, eliminating the need for an additional buffer spring. The traction rope stroke can be very large, and when the fixed end of the traction rope is fixed to the traction pulley, the stroke can be reduced, resulting in a wide range of stroke design. Resistance adjustment is more precise, and a predetermined resistance curve can be achieved through the design of the cam guide groove shape.
[0044] like Figures 7-12As shown, the initial state is the braking state, and the final state is the state of minimum resistance. In the braking state, the track bearing separates from the cam to enable the brake spring to function. The traction rope of this application can provide a large stroke, but it can also achieve a small stroke, and it can reduce the effective radius of the plastic part of the disc edge groove.
[0045] Pulling via the traction rope end causes the adjustable brake pulley to move, allowing the magnet assembly fixing frame to follow a specific trajectory towards the aluminum disc and effectively brake in the final braking state. This mechanism features a traction rope that can be rigidly connected to the human body, eliminating the need for an additional buffer spring. The traction rope stroke can be very large; when the traction rope fixing end is fixed to the outer side of the cam plate, the stroke can be reduced, resulting in a wide stroke design range. Resistance adjustment is more precise, and a predetermined resistance curve can be achieved through the design of the cam guide groove shape.
[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A magnetically controlled braking mechanism for fitness equipment, characterized in that, The device includes a frame, an aluminum disc fixing shaft system, a resistance-adjusting brake pulley, a drive cam mechanism, and a traction rope. The frame includes a base with a vertical rod in the middle. A first mounting plate is installed at the top of the vertical rod. A second mounting plate is located between the middle of the vertical rod and the middle of the first mounting plate. A third mounting plate is located between the end of the first mounting plate and the end of the base. The first mounting plate is used to install the resistance-adjusting brake pulley, the second mounting plate is used to install the aluminum disc fixing shaft system, and the third mounting plate is used to install the drive cam mechanism. The cam plate of the drive cam mechanism is provided with a traction rope fixing end sleeve, which is used to install the traction rope. The drive cam mechanism includes a cam plate, a cam guide groove, a traction rope fixing sleeve, a disc edge groove plastic part, a cam flange welded shaft, a reset spring rope winding wheel, a reset spring rope fixing rotating sleeve, a reset spring rope, a reset rope movable pulley, and a reset spring. The axis of the cam plate is mounted in the middle of the third mounting plate via the cam flange welded shaft. A cam guide groove is provided at a set distance from the axis at the center of the cam plate. The trajectory bearing of the drive connecting rod is installed in the cam guide groove. The cam guide groove is arc-shaped. A disc edge groove plastic part is provided on the outer end face of the cam. A traction rope fixing sleeve is installed in the disc edge groove plastic part. One end of the traction rope is installed in the traction... The rope is fixed at one end and then extends a predetermined length around the outer side of the cam's disc-shaped groove plastic part to form a handle for gripping. The disc-shaped groove plastic part has a groove-shaped structure. The other end of the flange welded shaft of the cam plate is equipped with a reset spring rope winding wheel. The outer side of the reset spring rope winding wheel is provided with a reset spring rope fixing sleeve. The reset spring rope is installed on the reset spring rope fixing sleeve. The reset spring rope passes around the reset rope movable pulley and is connected to the reset spring rope mounting post. The reset rope movable pulley is installed at one end of the reset spring, and the other end of the reset spring is installed on the reset spring mounting post, which is located at the right end of the base.
2. The magnetic brake mechanism for fitness equipment as described in claim 1, characterized in that, The adjustable brake pulley includes a rocker arm, a drive linkage frame, and a drive linkage. The rocker arm is mounted on the third mounting plate of the frame via a fixed bearing sleeve. The rocker arm includes a rocker arm body plate, a rocker arm shaft one, and a rocker arm shaft two. The rocker arm shaft one is mounted on the upper end of the rocker arm body plate. One end of the rocker arm shaft one is connected to the third mounting plate, and the other end is connected to the drive linkage frame.
3. The magnetic brake mechanism for fitness equipment as described in claim 2, characterized in that, The drive linkage frame includes a drive linkage, a magnet assembly fixing frame, a track bearing, and a brake pad. The drive linkage is an inverted L-shape. One end of the drive linkage is connected to the third mounting plate of the frame via a rocker arm, and the other end of the drive linkage is connected to the second mounting plate of the frame via a brake spring. A magnet assembly fixing frame is provided in the middle of the drive linkage, and the bottom end of the drive linkage is installed in conjunction with the cam guide groove of the cam plate via a track bearing. A brake pad is installed on the magnet assembly fixing frame, and the brake pad has a set distance from the end face of the aluminum disc.
4. The magnetic brake mechanism for fitness equipment as described in claim 3, characterized in that, One end of the brake spring is fixedly mounted on the side of the second mounting plate via a brake spring fixing seat, and the other end is connected to the bottom end of the drive linkage.
5. The magnetic brake mechanism for fitness equipment as described in claim 1, characterized in that, A frame fixing bearing sleeve one is installed in the middle of the front of the second mounting plate on the frame, a frame fixing bearing sleeve two is installed on the upper part of the third mounting plate, a frame fixing bearing sleeve three is fixed on the mounting crossbar of the adjustable brake pulley, a brake spring fixing seat is installed on the lower part of the side of the second mounting plate, and a reset spring pull rope mounting column is installed on the back of the right end of the base.