CN112221087B - A force arm adjustment mechanism for fitness equipment and use method thereof - Google Patents
A force arm adjustment mechanism for fitness equipment and use method thereof Download PDFInfo
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- CN112221087B CN112221087B CN202011022686.6A CN202011022686A CN112221087B CN 112221087 B CN112221087 B CN 112221087B CN 202011022686 A CN202011022686 A CN 202011022686A CN 112221087 B CN112221087 B CN 112221087B
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- frame
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- pull rod
- swing
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- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 abstract description 11
- 230000008859 change Effects 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 2
- 230000036544 posture Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/12—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles
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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
- A63B21/00058—Mechanical means for varying the resistance
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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
- A63B21/00058—Mechanical means for varying the resistance
- A63B21/00069—Setting or adjusting the resistance level; Compensating for a preload prior to use, e.g. changing length of resistance or adjusting a valve
- A63B21/00072—Setting or adjusting the resistance level; Compensating for a preload prior to use, e.g. changing length of resistance or adjusting a valve by changing the length of a lever
-
- 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
- A63B21/06—User-manipulated weights
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Rehabilitation Tools (AREA)
- Pivots And Pivotal Connections (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to a force arm adjusting mechanism for body-building equipment and a using method thereof, wherein the mechanism comprises a frame, an operating frame hinged on the frame, and a swinging frame hinged on the operating frame, wherein a load is arranged on the swinging frame, an operating part is arranged on the operating frame, the mechanism further comprises a pull rod, one end of the pull rod is hinged with the swinging frame, the other end of the pull rod is hinged with the frame, when the operating frame rotates, the swinging frame rotates by a certain angle relative to the operating frame by arranging the pull rod, so that the length of a force arm of the load relative to the hinge point of the frame and the operating frame is changed, and the size of a push-pull force in a push-pull stroke is changed by changing the length of the force arm of the load, so that different exercise effects can be achieved for different exercise actions.
Description
Technical Field
The invention relates to the technical field of fitness equipment, in particular to a force arm adjusting mechanism for fitness equipment and a using method thereof.
Background
The development of the Chinese fitness equipment industry starts at the end of the 80 th century, and with the success of adding WTO and Beijing Shenao in China, favorable conditions and development opportunities are provided for the development of the fitness equipment industry, and the continuous expansion of fitness teams brings a thick business opportunity for fitness equipment manufacturers. The existing common fitness equipment overcomes the gravity of the load through pushing force or pulling force, so that a corresponding exercise effect is achieved on the muscle groups with the force, the pushing and pulling force is always constant or uniformly changed along with the change of the pushing and pulling action stroke, and in order to achieve better and more professional exercise effect, the load force is changed according to the change of the pushing and pulling action stroke, so that the exercise force under different postures of muscles is adapted.
For example, in the chest pushing action, when the chest pushing action starts, the small arm is close to the large arm, at the moment, the hand is farthest from the chest, pushing is difficult, at the moment, the load force is required to be minimum, the chest pushing action is convenient to start, at the later stage of the chest pushing action, the arm is close to be straightened, the distance between the hand and the chest becomes small, at the moment, the load force is required to be rapidly increased, so that a better exercise effect is achieved, and if at the moment, the load force is still kept in a starting state or is increased slightly in a starting state, and the best exercise effect is not achieved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a force arm adjusting mechanism for fitness equipment and a use method thereof, and the force arm adjusting mechanism can change the thrust according to the use state.
The invention is realized by the following technical scheme, and provides a force arm adjusting mechanism for fitness equipment, which comprises a frame, an operating frame hinged on the frame, and a swinging frame hinged on the operating frame, wherein a load is arranged on the swinging frame, the operating frame is provided with an operating part, and the force arm adjusting mechanism also comprises a pull rod, one end of the pull rod is hinged with the swinging frame, and the other end of the pull rod is hinged with the frame.
The load in this scheme is installed on the swinging frame, operating personnel push-and-pull operation portion makes the operation portion rotate, exercise through overcoming the load power that the load provided, when the operation frame rotates, the articulated point of swinging frame and operation frame is circular motion around the articulated point of operation frame and frame, the articulated point of pull rod and swinging frame is circular motion around the articulated point of pull rod and frame, make the swinging frame rotate certain angle relative to the operation frame, thereby change the arm of force length of load relative to the articulated point of frame and operation frame, through changing the arm of force length of load, thereby change the magnitude of push-and-pull force in the push-and-pull stroke, thereby can play different exercise effects to different exercise actions.
As optimization, the projection of the hinge position of the operating frame and the frame on the moving plane of the operating frame is the point A, the projection of the hinge position of the operating frame and the swinging frame on the moving plane of the operating frame is the point B, the projection of the hinge position of the pull rod and the swinging frame on the moving plane of the operating frame is the point C, the projection of the hinge position of the pull rod and the frame on the moving plane of the operating frame is the point D, and the points A, B, C and D are connected end to end in sequence to form a convex quadrilateral. In the scheme, the point A, the point B, the point C and the point D are sequentially connected end to form a convex quadrilateral, and as the connecting line AD is kept unchanged, the included angle DAB is smaller and the included angle ABC is larger along with the swinging of the connecting line AB to the direction of the connecting line CD, so that the load swings in the direction away from the point A, the arm length of the load is further increased, and the push-pull force can be increased along with the increase of the push-pull stroke.
As optimization, the projection of the hinge position of the operating frame and the frame on the moving plane of the operating frame is the point A, the projection of the hinge position of the operating frame and the swinging frame on the moving plane of the operating frame is the point B, the projection of the hinge position of the pull rod and the swinging frame on the moving plane of the operating frame is the point C, the projection of the hinge position of the pull rod and the frame on the moving plane of the operating frame is the point D, and the connecting line AB and the connecting line CD are arranged in a crossing way. In this scheme, link AB and line CD alternately set up, because link AD keeps unchanged, along with link AB to C point direction swing, contained angle DAB grow, contained angle ABC diminishes to make the load swing to the direction that is close to A point, and then reduce the arm of force length of load, make push-pull force can reduce along with push-pull stroke's increase.
Preferably, the load comprises a barbell shaft fixedly connected to the swinging frame, and a barbell disc is arranged on the barbell shaft. The load in this solution comprises a barbell axis, the size of which can be adjusted by adjusting the disc on the barbell axis.
As optimization, the pull rod is connected with the swinging frame through a spherical hinge, and the pull rod is connected with the frame through a spherical hinge. In the scheme, the pull rod is connected with the swinging frame through the spherical hinge, and the pull rod is connected with the frame through the spherical hinge, so that the hinge axis of the operating frame and the frame can be crossed with the hinge axis of the operating frame and the swinging frame, and various equipment can be conveniently adapted.
As an optimization, the load is arranged at one end of the swing frame far away from the hinge joint of the swing frame and the operation frame. In this scheme, the load setting is kept away from the one end of swing frame and handling frame articulated department at the swing frame to increase the distance of load and articulated department, when the swing frame swings certain angle, make the travel distance of load arm of force bigger.
As optimization, two operation frames are hinged on the frame, and the two operation frames are symmetrically arranged left and right. Two operation frames that set up in this scheme to correspond both hands exercise or both legs exercise, can adapt to more equipment.
The application method of the arm adjusting mechanism for the body-building equipment comprises the following steps:
a. the load is arranged on the swinging frame, an operator pushes and pulls the operation part to rotate the operation part, and exercises are performed by overcoming the load force provided by the load;
b. When the operation frame rotates, the hinge point of the swing frame and the operation frame moves circularly around the hinge point of the operation frame and the frame, and the hinge point of the pull rod and the swing frame moves circularly around the hinge point of the pull rod and the frame, so that the swing frame rotates for a certain angle relative to the operation frame, and the length of a force arm of a load relative to the hinge point of the frame and the operation frame is changed;
c. By changing the length of the arm of force of the load, the magnitude of the push-pull force in the push-pull stroke is changed, so that different exercise effects can be achieved for different exercise actions.
The arm adjusting mechanism for the body-building equipment and the use method thereof have the advantages that when the operating frame rotates through the pull rod, the swinging frame rotates by a certain angle relative to the operating frame, so that the arm length of a load relative to the hinge point of the frame and the operating frame is changed, and the magnitude of push-pull force in a push-pull stroke is changed through changing the arm length of the load, so that different exercise effects can be achieved for different exercise actions.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the structure of another embodiment 1 of the present invention;
FIG. 3 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 4 is a schematic view showing the structure of another embodiment 2;
Fig. 5 is a schematic structural diagram of a chest-pushing training machine according to embodiment 1 of the present invention;
FIG. 6 is a front view of the invention of example 1 applied to a chest push trainer;
FIG. 7 is a side view of example 1 of the present invention applied to a chest push trainer;
the figure shows:
1. The device comprises a frame, 2, an operation frame, 3, a swing frame, 4, a pull rod, 5, a load, 6, an operation part, 7, a seat, 8 and a backrest.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
The push-pull force described in the present invention includes, but is not limited to, push force, pull force, rotational force, etc. of various exercises.
Example 1:
as shown in fig. 1 to 7, the arm adjusting mechanism for the exercise equipment comprises a frame 1, an operating frame 2 hinged on the frame 1 and a swinging frame 3 hinged on the operating frame 2, wherein the frame 1 is a fixed frame on the exercise equipment, the operating frame 2 is vertically arranged, and the upper end of the operating frame is hinged with the frame 1.
Two operation frames 2 are hinged on the frame 1, and the two operation frames 2 are symmetrically arranged left and right.
The swinging frame 3 is transversely arranged, one end of the swinging frame 3 is hinged with the middle position of the operating frame 2, and the hinge axis of the swinging frame 3 and the operating frame 2 can be parallel to the hinge axis of the operating frame 2 and the frame 1 or can have a certain included angle.
The load 5 is arranged at the end of the swing frame 3 away from the hinge of the swing frame 3 and the operation frame 2.
The load 5 can be fixed on the swinging frame 3, or can be a pull rope connected to the swinging frame 3, the other end of the pull rope is provided with a counterweight, and the vertical distance from the hinge shaft of the operating frame 2 and the frame 1 to the load force is the arm of the load.
The load 5 comprises a barbell shaft fixedly connected to the swinging frame 3, and a barbell disc is arranged on the barbell shaft.
The operating frame 2 is provided with an operating portion 6, and in this embodiment, the operating portion operates the handle, and the operating portion 6 is provided at the lower end of the operating frame 2.
The swing mechanism further comprises a pull rod 4, one end of the pull rod 4 is hinged with the swing frame 3 through a spherical hinge, and the other end of the pull rod 4 is hinged with the frame 1 through a spherical hinge. The pull rod 4 is connected to one end of the swing frame 3 close to the load 5, and a spiral sleeve is arranged in the middle of the pull rod 4, so that the length of the pull rod 4 can be adjusted. The two ends of the pull rod 4 are knuckle bearings.
The projection of the operation frame 2 on the movement plane of the operation frame 2, which is hinged with the frame 1, is a point A, the projection of the operation frame 2, which is hinged with the swinging frame 3, on the movement plane of the operation frame 2 is a point B, the projection of the pull rod 4, which is hinged with the swinging frame 3, on the movement plane of the operation frame 2 is a point C, the projection of the pull rod 4, which is hinged with the frame 1, on the movement plane of the operation frame 2 is a point D, and the points A, B, C and D are sequentially connected end to form a convex quadrangle.
The following describes a sitting chest pushing training machine with the arm adjusting mechanism.
As shown in fig. 5 to 7, the sitting type chest pushing training machine comprises a force arm adjusting mechanism, wherein two operation frames 2 are arranged on the force arm adjusting mechanism, and the two operation frames 2 are symmetrically arranged left and right.
The frame 1 of arm of force guiding mechanism is the frame of sitting posture chest push training machine, is equipped with the seat 7 that is located between two operation frames 2 on the frame 1, and the back 8 is equipped with to the rear of seat, and the operating portion 6 of here is the operating handle of horizontal setting, and the cover has anti-skidding rubber sleeve on the operating handle, and during the exercise, the exercise personnel sits on seat 7, leans on the back.
As shown in fig. 6, the swing frame 3, the load 5 and the pull rod 4 are all arranged in front of the operation frame 2, the load 5 is arranged at the front end of the swing frame 3, when the user exercises, the user holds the operation handle by both hands, the big arm is parallel to the body, the small arm is close to the big arm and vertical to the big arm and faces to the front, and the load force is minimum at the moment, so that the user can start conveniently.
When the operator pushes the operation handle to enable the operation frame 2 to swing forwards, the operation frame 2 is changed from vertical to horizontal, so that the arm of force of the load can be increased, but the degree of the increased thrust cannot meet the requirement.
When the operation frame 2 swings forwards, the pull rod 4 pushes the swing frame 3 to enable the swing frame 3 to rotate towards the operation handle relative to the operation frame 2, so that the length of a force arm of a load is further increased, the degree of thrust is increased until the arm straightens, and the thrust of the arm is maximum at the moment.
The application method of the arm adjusting mechanism for the body-building equipment comprises the following steps:
A load is mounted on the swinging frame 3, and an operator pushes and pulls the operation part 6 to rotate the operation part, so that exercise is performed by overcoming the load force provided by the load;
When the operating frame 2 rotates, the hinge point of the swinging frame 3 and the operating frame 2 moves circularly around the hinge point of the operating frame 2 and the frame 1, and the hinge point of the pull rod 4 and the swinging frame 3 moves circularly around the hinge point of the pull rod 4 and the frame 1, so that the swinging frame 3 rotates for a certain angle relative to the operating frame 2, and the arm length of a load relative to the hinge point of the frame 1 and the operating frame 2 is changed;
by changing the length of the force arm of the load, the push-pull force of the exerciser is changed, and different exercise effects can be achieved for different exercise actions.
Example 2:
this embodiment differs from embodiment 1 in that:
The connection line AB is arranged to intersect with the connection line CD.
It should be understood that the foregoing embodiments and the accompanying drawings are only for illustrating the technical aspects of the present invention, but not for limiting the present invention, and that the present invention is not limited to the preferred embodiments, and that the changes, modifications, additions or substitutions made by those skilled in the art within the spirit and scope of the present invention will not depart from the spirit and scope of the present invention as defined in the appended claims.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011022686.6A CN112221087B (en) | 2020-09-25 | 2020-09-25 | A force arm adjustment mechanism for fitness equipment and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011022686.6A CN112221087B (en) | 2020-09-25 | 2020-09-25 | A force arm adjustment mechanism for fitness equipment and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112221087A CN112221087A (en) | 2021-01-15 |
| CN112221087B true CN112221087B (en) | 2025-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011022686.6A Active CN112221087B (en) | 2020-09-25 | 2020-09-25 | A force arm adjustment mechanism for fitness equipment and use method thereof |
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| CN (1) | CN112221087B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4324532A4 (en) * | 2022-06-28 | 2024-10-09 | Shandong Li De Fitness Co., Ltd | SUPINE POSITION CHEST PRESS MACHINE WITH ADJUSTABLE POWER ASSIST ARM |
| CN218420842U (en) * | 2022-06-28 | 2023-02-03 | 山东利德体育器材有限公司 | Supine chest pushing training machine with variable force arm |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4357010A (en) * | 1980-11-07 | 1982-11-02 | Telle Jerome R | Multipurpose exercising machine |
| CN213375003U (en) * | 2020-09-25 | 2021-06-08 | 山东利德体育器材有限公司 | Arm of force adjustment mechanism for fitness equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4447031A (en) * | 1981-04-13 | 1984-05-08 | Positioning Devices, Inc. | Spring counterbalanced support arm system |
| US5135456A (en) * | 1991-04-25 | 1992-08-04 | Hammer Strength Corporaation | Low row exercise machine |
| TW441362U (en) * | 2000-10-03 | 2001-06-16 | Joong Chenn Industry Co Ltd | Multifunctional exercise machine |
| CN108211212A (en) * | 2018-04-15 | 2018-06-29 | 佛山瑞箭体育器材有限公司 | A kind of plain type pushes away chest health and fitness facilities |
| CN108499014A (en) * | 2018-06-05 | 2018-09-07 | 佛山瑞箭体育器材有限公司 | A kind of swinging body-building instrument of excercising muscle at abdominal part |
-
2020
- 2020-09-25 CN CN202011022686.6A patent/CN112221087B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4357010A (en) * | 1980-11-07 | 1982-11-02 | Telle Jerome R | Multipurpose exercising machine |
| CN213375003U (en) * | 2020-09-25 | 2021-06-08 | 山东利德体育器材有限公司 | Arm of force adjustment mechanism for fitness equipment |
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| Publication number | Publication date |
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| CN112221087A (en) | 2021-01-15 |
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Effective date of registration: 20210331 Address after: 271200 No.18, Bishan Road, high tech Development Zone, Xintai City, Tai'an City, Shandong Province Applicant after: SHANDONG LIDE SPORTS EQUIPMENT Co.,Ltd. Address before: 271200 No.18, Bishan Road, high tech Development Zone, Xintai City, Tai'an City, Shandong Province Applicant before: Shandong ruilida sports equipment Co.,Ltd. |
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