CN112221087A - Force arm adjusting mechanism for fitness equipment and using method thereof - Google Patents
Force arm adjusting mechanism for fitness equipment and using method thereof Download PDFInfo
- Publication number
- CN112221087A CN112221087A CN202011022686.6A CN202011022686A CN112221087A CN 112221087 A CN112221087 A CN 112221087A CN 202011022686 A CN202011022686 A CN 202011022686A CN 112221087 A CN112221087 A CN 112221087A
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- frame
- point
- pull rod
- hinged
- swing
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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
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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
- A63B21/06—User-manipulated weights
Abstract
The invention relates to a force arm adjusting mechanism for fitness equipment and a use method thereof, the mechanism comprises a rack, an operation frame hinged on the rack, a swing frame hinged on the operation frame, a load arranged on the swing frame, an operation part arranged on the operation frame, and a pull rod, wherein one end of the pull rod is hinged with the swing frame, the other end of the pull rod is hinged with the rack, and the swing frame rotates a certain angle relative to the operation frame when the operation frame rotates by arranging the pull rod, so that the length of a force arm of the load relative to the hinged point of the rack and the operation frame is changed; the mechanism can be suitable for various fitness equipment, has a simple structure, and is very suitable for fitness equipment of various specialties.
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 20 th century, 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 great business opportunities for fitness equipment manufacturers. At present, the commonly used fitness equipment overcomes the gravity of a load through pushing force or pulling force, so that a corresponding exercise effect is achieved on a muscle group, the pushing force is usually constant or uniformly changed along with the change of a pushing and pulling action stroke, and in order to achieve a better and more professional exercise effect, the loading force is changed according to the change of the pushing and pulling action stroke, so that the exercise force of muscles in different postures is adapted.
For example, in the chest pushing action, when the chest pushing action starts, the small arm is close to and perpendicular to the large arm, the hand is farthest away from the chest at the moment, the pushing is difficult, the load force is minimum at the moment, the chest pushing action is convenient to start, in the later stage of the chest pushing action, as the arms are close to straightening, the distance between the hand and the chest is reduced, the load force is rapidly increased at the moment, and therefore a better exercise effect is achieved, and if the load force is still kept in a starting state or is increased less than the starting state at the moment, the best exercise effect cannot be 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 using method thereof, which can change the magnitude of thrust according to the using state.
The invention is realized by the following technical scheme, and provides a force arm adjusting mechanism for fitness equipment, which comprises a rack, an operating frame hinged on the rack, a swinging frame hinged on the operating frame, a load arranged on the swinging frame, an operating part arranged on the operating frame, and a pull rod, wherein one end of the pull rod is hinged with the swinging frame, and the other end of the pull rod is hinged with the rack.
The load in the scheme is arranged on the swing frame, an operator pushes and pulls the operation part to enable the operation part to rotate, and exercises by overcoming the load force provided by the load; when the operation frame rotates, the hinged point of the swing frame and the operation frame makes circular motion around the hinged point of the operation frame and the rack, and the hinged point of the pull rod and the swing frame makes circular motion around the hinged point of the pull rod and the rack, 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 hinged point of the rack and the operation frame is changed; the length of the force arm of the load is changed, so that the magnitude of the push-pull force in the push-pull stroke is changed, and different exercise effects can be achieved according to different exercise actions.
As optimization, the projection of the hinged position of the operation frame and the rack on the motion plane of the operation frame is an A point, the projection of the hinged position of the operation frame and the swing frame on the motion plane of the operation frame is a B point, the projection of the hinged position of the pull rod and the swing frame on the motion plane of the operation frame is a C point, the hinged position of the pull rod and the rack on the motion plane of the operation frame is a D point, and the A point, the B point, the C point and the D point are sequentially connected end 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 reduced and the included angle ABC is increased along with the swinging of the connecting line AB to the connecting line CD, so that the load swings in the direction far away from the point A, the force arm length of the load is increased, and the push-pull force can be increased along with the increase of the push-pull stroke.
Preferably, the projection of the hinged position of the operation frame and the rack on the motion plane of the operation frame is point A, the projection of the hinged position of the operation frame and the swing frame on the motion plane of the operation frame is point B, the projection of the hinged position of the pull rod and the swing frame on the motion plane of the operation frame is point C, the projected position of the hinged position of the pull rod and the rack on the motion plane of the operation frame is point D, and the connecting line AB and the connecting line CD are arranged in a crossed mode. In the scheme, the connecting line AB and the connecting line CD are arranged in a crossed mode, and the connecting line AD keeps unchanged, so that the included angle DAB is increased and the included angle ABC is decreased along with the swinging of the connecting line AB to the C point, the load swings to the direction close to the A point, the force arm length of the load is further reduced, and the push-pull force can be reduced along with the increase of the push-pull stroke.
Preferably, the load comprises a barbell shaft fixedly connected to the swing frame, and barbell discs are arranged on the barbell shaft. The load in the scheme comprises the barbell shaft, and the size of the load can be adjusted by adjusting the barbell disc on the barbell shaft.
Preferably, the pull rod is connected with the swing frame through a spherical hinge, and the pull rod is connected with the rack through a spherical hinge. In the scheme, the pull rod is connected with the swing frame through the spherical hinge, and the pull rod is connected with the rack through the spherical hinge, so that the hinged axis of the operating frame and the rack can be crossed with the hinged axis of the operating frame and the swing frame, and the device is convenient to adapt to various devices.
Preferably, the load is arranged at one end of the swing frame far away from the hinged position of the swing frame and the operation frame. In the scheme, the load is arranged at one end, far away from the hinged part of the swing frame and the operation frame, of the swing frame, so that the distance between the load and the hinged part is increased, and when the swing frame swings for a certain angle, the moving distance of a load force arm is larger.
As optimization, the frame is hinged with two operation frames which are arranged in bilateral symmetry. Two handling frames that set up in this scheme to correspond both hands and take exercise or both legs and take exercise, can adapt to more equipment.
A use method of a force arm adjusting mechanism for fitness equipment comprises the following steps:
a. the load is arranged on the swing frame, an operator pushes and pulls the operation part to enable the operation part to rotate, and exercises by overcoming the load force provided by the load;
b. when the operation frame rotates, the hinged point of the swing frame and the operation frame makes circular motion around the hinged point of the operation frame and the rack, and the hinged point of the pull rod and the swing frame makes circular motion around the hinged point of the pull rod and the rack, 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 hinged point of the rack and the operation frame is changed;
c. the length of the force arm of the load is changed, so that the magnitude of the push-pull force in the push-pull stroke is changed, and different exercise effects can be achieved according to different exercise actions.
The invention has the beneficial effects that: according to the force arm adjusting mechanism for the fitness equipment and the using method thereof, the pull rod is arranged, so that the swinging frame rotates for a certain angle relative to the operating frame when the operating frame rotates, and the length of the force arm of the load relative to the hinged point of the rack and the operating frame is changed; the mechanism can be suitable for various fitness equipment, has a simple structure, and is very suitable for fitness equipment of various specialties.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic structural diagram of another embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of example 2 of the present invention;
FIG. 4 is a schematic structural diagram of another embodiment 2 of the present invention;
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 chest press according to embodiment 1 of the present invention;
FIG. 7 is a side view of the chest press according to embodiment 1 of the present invention;
shown in the figure:
1. frame, 2, handling frame, 3, swing frame, 4, pull rod, 5, load, 6, operation portion, 7, seat, 8, back.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
The push-pull forces described herein include, but are not limited to, push forces, pull forces, rotational forces, and the like, as is the case with various types of exercise.
Example 1:
as shown in fig. 1 to 7, the force arm adjusting mechanism for fitness equipment of the invention comprises a frame 1, an operation frame 2 hinged on the frame 1, and a swing frame 3 hinged on the operation frame 2, wherein the frame 1 is a fixed frame on the fitness equipment, and the operation frame 2 is vertically arranged and the upper end of the operation frame is hinged with the frame 1.
The frame 1 is hinged with two operation frames 2, and the two operation frames 2 are arranged in bilateral symmetry.
The swing frame 3 is transversely arranged, one end of the swing frame 3 is hinged to the middle of the operation frame 2, and the hinge axis of the swing frame 3 and the operation frame 2 can be parallel to the hinge axis of the operation frame 2 and the hinge axis of the rack 1 and can also form a certain included angle.
The load 5 is arranged at one end of the swing frame 3 away from the hinged position of the swing frame 3 and the operation frame 2.
The load 5 can be fixed on the swing frame 3 or can be a pull rope connected on the swing frame 3, the other end of the pull rope is provided with a balance weight, and the vertical distance between the hinge shaft of the operation frame 2 and the frame 1 and the load force is the force arm of the load.
The load 5 comprises a barbell shaft fixedly connected on the swing frame 3, and barbell discs are arranged on the barbell shaft.
The operation frame 2 is provided with an operation part 6, the operation part in the embodiment operates the handle, and the operation part 6 is arranged at the lower end of the operation frame 2.
The device is characterized by further comprising a pull rod 4, wherein 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 rack 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 the middle of the pull rod 4 is provided with a screw sleeve which can adjust the length of the pull rod 4. Two ends of the pull rod 4 are joint bearings.
The projection of the articulated position of the operation frame 2 and the rack 1 on the motion plane of the operation frame 2 is point A, the projection of the articulated position of the operation frame 2 and the swing frame 3 on the motion plane of the operation frame 2 is point B, the projection of the articulated position of the pull rod 4 and the swing frame 3 on the motion plane of the operation frame 2 is point C, the projection of the articulated position of the pull rod 4 and the rack 1 on the motion plane of the operation frame 2 is point D, and the point A, the point B, the point C and the point D are sequentially connected end to form a convex quadrilateral.
The sitting type chest-pushing training machine with the force arm adjusting mechanism is taken as an example for explanation.
As shown in figures 5 to 7, the sitting type chest-pushing training machine comprises a force arm adjusting mechanism, two operation frames 2 are arranged on the force arm adjusting mechanism, and the two operation frames 2 are arranged in bilateral symmetry.
The frame 1 of the force arm adjusting mechanism is the frame of the sitting type chest-pushing training machine, a seat 7 positioned between two operation frames 2 is arranged on the frame 1, a backrest 8 is arranged at the rear part of the seat, an operation part 6 at the position is an operation handle transversely arranged, an anti-skidding rubber sleeve is sleeved on the operation handle, and when in exercise, an exerciser sits on the seat 7 and leans against 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 in exercise, the operator holds the operation handle with both hands, the big arm is parallel to the body, the small arm and the big arm are close to be vertical and face forwards, and the load force is minimum at the moment, so that the operator can start conveniently.
The operating handle is pushed to operating personnel, when making handling frame 2 swing forward, because handling frame 2 is by vertical to the horizontal transformation this moment, itself can make the arm of force grow of load, but the degree of thrust grow can't satisfy 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 the load is further increased; the increasing degree of the thrust is increased until the arm is straightened, and the thrust of the arm is maximum at the moment.
A use method of a force arm adjusting mechanism for fitness equipment comprises the following steps:
a load is arranged on the swing frame 3, an operator pushes and pulls the operation part 6 to rotate the operation part, and exercises by overcoming the load force provided by the load;
when the operation frame 2 rotates, the hinged point of the swing frame 3 and the operation frame 2 makes circular motion around the hinged point of the operation frame 2 and the rack 1, and the hinged point of the pull rod 4 and the swing frame 3 makes circular motion around the hinged point of the pull rod 4 and the rack 1, so that the swing frame 3 rotates for a certain angle relative to the operation frame 2, and the force arm length of the load relative to the hinged point of the rack 1 and the operation frame 2 is changed;
the length of the force arm of the load is changed, so that the push-pull force of the exerciser is changed, and different exercise effects can be achieved according to different exercise actions.
Example 2:
this example differs from example 1 in that:
the connection line AB is crossed with the connection line CD.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a force arm guiding mechanism for body-building apparatus which characterized in that: including frame (1), articulate handling frame (2) in frame (1) and articulate swing span (3) on handling frame (2), load (5) are equipped with on swing span (3), be equipped with operation portion (6) on handling frame (2), still include pull rod (4), the one end and the swing span (3) of pull rod (4) are articulated, and the other end and frame (1) of pull rod (4) are articulated.
2. The moment arm adjustment mechanism for exercise equipment of claim 1, wherein: the articulated projection that is in handling frame (2) motion plane of handling frame (2) and frame (1) is A point, the articulated projection that is in handling frame (2) motion plane of handling frame (2) and swing span (3) is B point, the articulated projection that is in handling frame (2) motion plane of pull rod (4) and swing span (3) is C point, the articulated projection that is in handling frame (2) motion plane of pull rod (4) and frame (1) is D point, A point, B point, C point and D point constitute the convex quadrilateral end to end in proper order.
3. The moment arm adjustment mechanism for exercise equipment of claim 1, wherein: the projection of the hinged position of the operation frame (2) and the rack (1) on the motion plane of the operation frame (2) is a point A, the projection of the hinged position of the operation frame (2) and the swing frame (3) on the motion plane of the operation frame (2) is a point B, the projection of the hinged position of the pull rod (4) and the swing frame (3) on the motion plane of the operation frame (2) is a point C, the projection of the hinged position of the pull rod (4) and the rack (1) on the motion plane of the operation frame (2) is a point D, and the connecting line AB and the connecting line CD are arranged in a crossed mode.
4. The moment arm adjustment mechanism for exercise equipment of claim 1, wherein: the load (5) comprises a barbell shaft fixedly connected on the swing frame (3), and barbell discs are arranged on the barbell shaft.
5. The moment arm adjustment mechanism for exercise equipment of claim 1, wherein: the pull rod (4) is connected with the swing frame (3) through a spherical hinge, and the pull rod (4) is connected with the rack (1) through a spherical hinge.
6. The moment arm adjustment mechanism for exercise equipment of claim 1, wherein: the load (5) is arranged at one end of the swing frame (3) far away from the hinged position of the swing frame (3) and the operation frame (2).
7. The moment arm adjustment mechanism for exercise equipment of claim 1, wherein: the frame (1) is hinged with two operation frames (2), and the two operation frames (2) are arranged in a bilateral symmetry mode.
8. A use method of a force arm adjusting mechanism for fitness equipment is characterized by comprising the following steps:
a. a load is arranged on the swing frame (3), an operator pushes and pulls the operation part (6) to rotate the operation part, and exercises by overcoming the load force provided by the load;
b. when the operation frame (2) rotates, the hinged point of the swing frame (3) and the operation frame (2) makes circular motion around the hinged point of the operation frame (2) and the rack (1), the hinged point of the pull rod (4) and the swing frame (3) makes circular motion around the hinged point of the pull rod (4) and the rack (1), so that the swing frame (3) rotates for a certain angle relative to the operation frame (2), and the length of the force arm of the load relative to the hinged point of the rack (1) and the operation frame (2) is changed;
c. the length of the force arm of the load is changed, so that the push-pull force of the exerciser is changed, and different exercise effects can be achieved according to different exercise actions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011022686.6A CN112221087A (en) | 2020-09-25 | 2020-09-25 | Force arm adjusting mechanism for fitness equipment and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011022686.6A CN112221087A (en) | 2020-09-25 | 2020-09-25 | Force arm adjusting mechanism for fitness equipment and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112221087A true CN112221087A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011022686.6A Pending CN112221087A (en) | 2020-09-25 | 2020-09-25 | Force arm adjusting mechanism for fitness equipment and using method thereof |
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| Country | Link |
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| CN (1) | CN112221087A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024001928A1 (en) * | 2022-06-28 | 2024-01-04 | 山东利德体育器材有限公司 | Supine chest press machine provided with changeable power-assisting arms |
-
2020
- 2020-09-25 CN CN202011022686.6A patent/CN112221087A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024001928A1 (en) * | 2022-06-28 | 2024-01-04 | 山东利德体育器材有限公司 | Supine chest press machine provided with changeable power-assisting arms |
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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. |