CN212941212U

CN212941212U - Sitting posture trainer with magnetorheological adjustable damping

Info

Publication number: CN212941212U
Application number: CN202021430248.9U
Authority: CN
Inventors: 黄恺
Original assignee: Hunan Bohai New Materials Co ltd
Current assignee: Shenzhen Bohai New Material Technology Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-04-13
Anticipated expiration: 2030-07-20

Abstract

The utility model relates to a body-building apparatus field, more specifically relate to a take position of sitting training ware of magnetic current becomes adjustable damping. The utility model provides a take position of sitting training ware of magneto rheological adjustable damping, include: a main body support; a seat, a load device and a load traction device which are arranged on the main body bracket; and an exerciser force application device connected to the load device by the load traction device; the load device is an adjustable magnetorheological damper. By arranging the adjustable magnetorheological damper, the problems that in the prior art, the load of a sitting posture trainer is adjusted inconveniently, noise exists, potential safety hazards exist and the like are solved.

Description

Sitting posture trainer with magnetorheological adjustable damping

Technical Field

The utility model relates to a body-building apparatus field, more specifically relate to a take position of sitting training ware of magnetic current becomes adjustable damping.

Background

In the prior art fitness sitting posture trainer, the weight of the load for exercise is usually applied through a dumbbell sheet or a weight plate, and the increase and decrease of the dumbbell sheet or the weight plate are generally determined through the insertion of a bolt, so that the load during exercise is adjusted. The exercise load applying means in the prior art has the defects of large noise and slightly larger weight, and requires a fitness coach to assist or nurse nearby so as to avoid possible physical damage caused by misoperation or exhaustion of a body builder when weight is increased for estimation error. In addition, the trainer is very heavy and troublesome to carry and move due to the arrangement of a plurality of weight plates.

The information included in this background section of the specification of the present invention, including any references cited herein and any descriptions or discussions thereof, is included for technical reference purposes only and is not to be considered subject matter which would limit the scope of the present invention.

SUMMERY OF THE UTILITY MODEL

The present invention has been developed in view of the above-mentioned and other more recent concepts. The utility model discloses aim at solving above technical defect and other technical problem.

For solving among the prior art load regulation trouble, have the noise, have defects such as potential safety hazard, the utility model provides a following technical scheme:

an aspect of the utility model provides a take position of sitting training ware of magneto rheological adjustable damping, include: a main body support; a seat, a load device and a load traction device which are arranged on the main body bracket; and an exerciser force device configured to be connected to the load device through the load traction device so as to apply the load of the load device to an exerciser through the load traction device and the exerciser force device for training; the adjustable magnetorheological damper is characterized in that the load device is an adjustable magnetorheological damper which can be controlled by a control device, and the damping of magnetorheological fluid in the adjustable magnetorheological damper is adjustable, so that the load applied to the exerciser by the load traction device and the exerciser stressing device is also adjustable.

The utility model discloses another aspect provides a take position of sitting training ware of magnetic current becomes adjustable damping, include: a main body support; a seat mounted on the main body bracket, wherein the seat is fixed to the main body bracket; and a load traction device; the sitting posture trainer with the magnetorheological adjustable damping is characterized by further comprising an adjustable magnetorheological damper and a control device, wherein the adjustable magnetorheological damper is positioned behind the seat or positioned on either side or both sides of the seat; and a exerciser force application device connected to the adjustable magnetorheological damper through the load traction device; the control device is configured to be operatively and electrically coupled to the adjustable magnetorheological damper to vary the magnitude of the damping thereof by controlling the magnitude of the excitation current in the adjustable magnetorheological damper, thereby varying the magnitude of the load applied by the adjustable magnetorheological damper to the exerciser via the load traction device and the exerciser force application device.

In one embodiment, the seating trainer with the magnetorheological adjustable damping further comprises a traction force feedback meter, and the traction force feedback meter is arranged at one end of the load traction device connected with the adjustable magnetorheological damper.

In one embodiment, the adjustable magnetorheological damper comprises a cylinder barrel, a floating piston, a working piston and a piston rod fixedly connected with the working piston, wherein the working piston divides a space for containing magnetorheological fluid serving as working fluid in the cylinder barrel into a rod-containing magnetorheological fluid bin close to one side of the top of the cylinder barrel and a rod-free magnetorheological fluid bin close to one side of the bottom of the cylinder barrel in the length direction of the cylinder barrel; one end of the piston rod is fixedly connected with the working piston, and the other end of the piston rod penetrates through a sealing upper end cover arranged at the top of the cylinder barrel and extends out of the cylinder barrel; the working piston comprises a magnetic conduction core and a magnetic conduction outer wall, a liquid passing gap for magnetorheological fluid to pass through is arranged between the magnetic conduction core and the magnetic conduction outer wall, and the liquid passing gap is communicated with the rod-type magnetorheological fluid bin and the rodless magnetorheological fluid bin; and during the working period of the adjustable magnetorheological damper, the current applied to the excitation coil positioned at or near the working piston is changed to change the magnetic field intensity applied to at least the position of the liquid passing gap, so that the flow resistance of the magnetorheological liquid flowing between the rod-type magnetorheological liquid cabin and the rodless magnetorheological liquid cabin through the liquid passing gap is adjusted, the damping force of the piston movement of the working piston in the cylinder barrel is adjusted, and the damping provided by the adjustable magnetorheological damper is adjustable.

In an embodiment, the adjustable magnetorheological damper further comprises a nitrogen bin located at the bottom of the cylinder, wherein the nitrogen bin is arranged between the floating piston and the bottom of the cylinder.

In one embodiment, the exerciser's stress device is a grip device, a foot pedal device, or a body part load traction device.

In one embodiment, the control device comprises a control knob on a control box, wherein the control knob can be used for adjusting the magnitude of the exciting current applied to the adjustable magnetorheological damper.

In one embodiment, the exerciser force enhancing device comprises a pull-down trainer connected to the adjustable magnetorheological damper by a first pull cord over a series of pulleys, the pull-down trainer suspended above the seat and including a first handle.

In one embodiment, the sitting posture trainer with the magnetorheological adjustable damping further comprises a foot fixing frame, the foot fixing frame is connected to the bottom of the main body support through a second traction rope and spans a series of pulleys, and the second traction rope and the first traction rope are connected through a first pulley block.

In one embodiment, the sitting posture trainer with the magnetorheological adjustable damping further comprises a horizontal pushing trainer, the top of the horizontal pushing trainer is slidably connected to a top cross rod of the main body support, two ends of the rear part of the horizontal pushing trainer span a series of pulleys through a third traction rope and are connected, the horizontal pushing trainer is suspended above the seat and comprises a second pull handle, and the third traction rope and the second traction rope are connected through a second pulley block.

In the prior art, most of load devices are load plates or dumbbell pieces, the load increasing process is troublesome, noisy and easy to cause personnel injury, the load is adjusted through the adjustable magnetorheological damper, stepless adjustment can be realized, and no noise is generated in the adjusting process. The load can be increased or reduced by adjusting the current in the adjustable magnetorheological damper, and the self weight of the device is not increased. The application of the magnetorheological fluid damper can effectively reduce the number of the load plates and avoid accidental injury caused by exhaustion or improper operation of a body builder during training.

Further embodiments of the present invention are also capable of achieving other advantageous technical effects not listed, which other technical effects may be partially described hereinafter, and which are anticipated and understood by those skilled in the art upon reading the present invention.

The section "summary" is intended to introduce a selection of concepts and options in a simplified form that are further described below in the detailed description of the invention to assist the reader in understanding the invention. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. All of the above features are to be understood as exemplary only and further features and objects, both as to structure and method, may be gleaned from the present disclosure. A more complete appreciation of the features, details, utilities, and advantages of the present invention will be provided in the following written description of various embodiments of the present invention, illustrated in the accompanying drawings, and defined in the appended claims. Accordingly, many limiting explanations of the disclosure may not be understood without further reading the entire specification, claims and drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below.

The above features and advantages and other features and advantages of these embodiments, and the manner of attaining them, will become more apparent and the embodiments of the invention will be better understood by reference to the following description, taken in conjunction with the accompanying drawings, wherein:

fig. 1 exemplarily shows a sitting posture trainer with magnetorheological adjustable damping according to an exemplary embodiment of the present invention.

FIG. 2 schematically illustrates a cross-sectional view of the adjustable magnetorheological damper shown in FIG. 1.

Wherein the reference numerals in the figures are as follows:

1-an adjustable magnetorheological damper; 2-a load traction device; 3-traction force feedback meter; 4-control knob; 5-a control box; 6-main body support; 7-a first handle; 8-a second handle; 9-a seat; 10-foot fixing frame; 01-a cylinder barrel; 02-working piston; 03-a piston rod; 04-a floating piston; 05-sealing the upper end cover; 06-nitrogen filling port; 07-a nitrogen gas bin; 08-rodless magnetorheological fluid tanks; 09-a rod magnetorheological fluid chamber; 041-sealing ring; 021-a magnetically permeable core; 022-a magnetically permeable outer wall; 023-liquid passing gap; 024-field coil; 025-top end cap; 026 bottom end cap.

Detailed Description

The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the invention will be apparent from the description and drawings, and from the claims.

It is to be understood that the embodiments illustrated and described are not limited in application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The illustrated embodiments are capable of other embodiments and of being practiced or of being carried out in various ways. Examples are provided by way of explanation of the disclosed embodiments, not limitation.

Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the scope or spirit of the disclosure. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. Accordingly, the present disclosure covers such modifications and variations as come within the scope of the appended claims and their equivalents.

Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. For example, the use of "including," "having," or "provided" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.

It will be understood that when an element is referred to as being "secured to," "connected to," "mounted to" or "disposed on" another element, it can be directly or indirectly secured to the other element.

It should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the 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.

The present invention will be explained and explained in more detail with reference to specific embodiments thereof, and the accompanying drawings.

The conventional sitting posture training machine includes: the exercise device comprises a bracket, a seat, a load device, a load traction device and a body builder stressing device, wherein the seat, the load device and the load traction device are arranged on the bracket, and the body builder stressing device is connected to the load device through the load traction device and is used for exercising the strength of the upper body or legs. The load device of traditional position of sitting training ware is load board or dumbbell piece usually, the embodiment of the utility model provides an in, replace the load device in the traditional position of sitting training ware with adjustable magnetic current becomes attenuator to solve among the prior art load board and adjust troublesome, have the noise and have potential safety hazard scheduling problem. The seating trainer with magnetorheological adjustable damping may include various trainer components known in the art so that an exerciser may use the seating trainer to exercise muscles in one or more parts of the body simultaneously or separately.

The utility model provides a take position of sitting training ware of magnetic current becomes adjustable damping, include: a main body bracket 6, a seat 9 arranged on the main body bracket 6, a load device and a load traction device 2, and a force applying device for a body builder. An exerciser force application device is configured to be coupled to the load device via the load traction device 2 so that the load of the load device is applied to the exerciser via the load traction device 2 and the exerciser force application device for exercise. The load device is an adjustable magnetorheological damper 1 which can be controlled by a control device, the damping of the magnetorheological fluid in the adjustable magnetorheological damper 1 is adjustable, and the load applied to the exerciser by the load traction device 2 and the exerciser stressing device is also adjustable.

Referring to fig. 1, the utility model provides a take position of sitting training ware of magneto rheological adjustable damping, include: a main body bracket 6, a seat 9 mounted on the main body bracket 6, and a load traction apparatus 2, wherein the seat 9 is fixed on the main body bracket 6. The sitting posture trainer with the magnetorheological adjustable damping further comprises an adjustable magnetorheological damper 1 and a control device, wherein the adjustable magnetorheological damper 1 is located behind the seat 9 or located on either side or both sides of the seat 9. The sitting posture trainer with the magnetorheological adjustable damping further comprises a body builder stress application device, and the body builder stress application device is connected to the adjustable magnetorheological damper 1 through a load traction device 2. The control device is arranged to be operatively and electrically coupled to the adjustable magnetorheological damper 1 to change the magnitude of the damping thereof by controlling the magnitude of the excitation current in the adjustable magnetorheological damper 1, thereby changing the magnitude of the load applied to the exerciser by the adjustable magnetorheological damper 1 via the load traction device 2 and the exerciser force applying device.

In one embodiment, the number of adjustable magnetorheological dampers 1 is one or two.

In one embodiment, the load traction device 2 comprises: a traction rope, a movable pulley and a fixed pulley fixed on the main body bracket 6, wherein the traction rope crosses a series of fixed pulleys and movable pulleys and is connected to a force applying device of a body builder to draw a load.

In one embodiment, the sitting posture trainer with the magneto rheological adjustable damper further comprises a traction force feedback meter 3, and the traction force feedback meter 3 is arranged at one end of the load traction device 2 connected with the adjustable magneto rheological damper 1. Alternatively, the traction force feedback meter 3 may be provided at other positions of the load traction device 2 to measure the magnitude of the traction force of the load traction device 2. Alternatively, the measurement result of the traction force feedback meter 3 may be fed back to the control device in real time.

Referring to fig. 2, in an embodiment, the adjustable magnetorheological damper 1 includes a cylinder 01, a floating piston 04, a working piston 02, and a piston rod 03 fixedly connected to the working piston 02. The working piston 02 divides a space for containing magnetorheological fluid serving as working fluid in the cylinder 01 into a rod-containing magnetorheological fluid chamber 09 close to the top side of the cylinder 01 and a rodless magnetorheological fluid chamber 08 close to the bottom side of the cylinder 01 in the length direction of the cylinder 01. Wherein, one end of the piston rod 03 is fixedly connected with the working piston 02, and the other end thereof passes through the upper sealing end cover 05 arranged at the top of the cylinder barrel 01 and extends out of the cylinder barrel 01. The working piston 02 comprises a magnetic core 021 and a magnetic outer wall 022, a liquid passing gap 023 through which magnetorheological liquid passes is arranged between the magnetic core 021 and the magnetic outer wall 022, and the liquid passing gap 023 is communicated with a rod magnetorheological liquid bin 09 and a rodless magnetorheological liquid bin 08. Magnetorheological fluid serving as working fluid is filled in the rod-type magnetorheological fluid chamber 09 and the rod-free magnetorheological fluid chamber 08, and can flow between the rod-type magnetorheological fluid chamber 09 and the rod-free magnetorheological fluid chamber 08 through the fluid passing gap 023. The conductor of the excitation coil 024 is led out through the central opening of the piston rod 03. During the operation of the adjustable magnetorheological damper 1, the flow resistance of the magnetorheological fluid flowing between the rod-type magnetorheological fluid chamber 09 and the rodless magnetorheological fluid chamber 08 through the fluid passing gap 023 is adjusted by changing the current applied to the excitation coil 024 positioned at or near the working piston 02 to change the magnetic field strength applied to at least the fluid passing gap 023, thereby adjusting the damping force of the piston movement of the working piston 02 in the cylinder 01, so that the damping provided by the adjustable magnetorheological damper 1 is adjustable. In one embodiment, a sealing ring 041 is disposed between the floating piston 04 and the outer wall of the cylinder 01. In one embodiment, working piston 02 further includes a top end cap 025 and a bottom end cap 026, with top end cap 025 and bottom end cap 026 fluidly sealing magnetically permeable core 021 of working piston 02 from the outside. In one embodiment, the excitation coil 024 is installed in a coil slot formed outside the magnetically permeable core 021.

In one embodiment, the adjustable magnetorheological damper 1 further comprises a nitrogen bin 07 positioned at the bottom of the cylinder 01, wherein the nitrogen bin 07 is arranged between the floating piston 04 and the bottom of the cylinder 01. The nitrogen gas container 07 is filled with nitrogen gas or a gas equivalent thereto such as inert gas or carbon dioxide, etc. In one embodiment, the bottom of the cylinder 01 is provided with a nitrogen filling port 06.

In one embodiment, the adjustable magnetorheological damper 1 further comprises a guide ring disposed between the upper seal cover 05 and the piston rod 03. In one embodiment, the adjustable magnetorheological damper 1 further comprises a guide piston ring disposed between the magnetically conductive outer wall 022 and the outer wall of the cylinder 01.

In one embodiment, the adjustable magnetorheological damper 1 further comprises a wire injection chamber located inside the magnetically permeable core 021.

In one embodiment, the exerciser's force application device is a grip device, a foot pedal device, or a body part load traction device 2. In other embodiments, the seating trainer with magnetorheological adjustable damping may also include other basic training devices. The exerciser can separately or simultaneously perform one or more exercises with adjustable load through current.

In an embodiment, the control device comprises a control knob 4 on a control box 5, wherein the magnitude of the excitation current applied to the adjustable magnetorheological damper 1 can be adjusted by the control knob 4. In a preferred embodiment, the control box 5 is located below the seat 9 and the control knobs 4 are located above or to the side of the control box 5 to facilitate the adjustment of the load by the exerciser.

In one embodiment, the magnitude of the current in the adjustable magnetorheological damper 1 is adjusted by manually rotating the adjustment control knob 4, and the maximum adjustable value of the current is set to a reasonable range, such as the human body is approximately equal to the load limit of the human body or less than the load limit of the load traction device 2.

In one embodiment, a load scale is provided around the control knob 4, and the load scale is configured to correspond to the magnitude of the load applied by the adjustable magnetorheological damper 1. This operation is typically done before the trainer is brought out of production or put into use. The scale marking of the control knob 4 is realized by measuring the damping of the adjustable magnetorheological damper 1 while the current of the control knob 4 is changed by manual adjustment.

In one embodiment, the traction force feedback meter 3 feeds back the tension force of the load traction device 2 to the control box 5 in real time, and when the tension force is instantaneously reduced in a large range, the control box 5 actively controls the current magnitude, so that the damping of the adjustable magnetorheological damper 1 is slowly rebounded. The traction force feedback meter 3 feeds the tension force back to the control box 5 in real time, if misoperation or sudden drop of hand slipping occurs to a body builder, the tension force is instantly reduced in a large range, the control box 5 actively controls the current magnitude, the magnetorheological damping is enabled to slow the rebound speed, and personal injury of the body builder is avoided.

In one embodiment, the exerciser's force application device comprises a pull-down trainer connected to the adjustable magnetorheological damper 1 by a first pull cord over a series of pulleys, the pull-down trainer suspended above the seat 9 and including a first handle 7. The exerciser can perform pull-down training by pulling down the first handle 7 with both hands.

In one embodiment, the sitting trainer with the magneto rheological adjustable damping further comprises a foot fixing frame 10, the foot fixing frame 10 is connected to the bottom of the main body bracket 6 by a second traction rope across a series of pulleys, and the second traction rope and the first traction rope are connected by a first pulley block. The exerciser can perform leg exercise by pedaling the foot fixing frame 10. Alternatively, the pull-down training and the leg training may be performed simultaneously.

In one embodiment, the sitting posture trainer with the magneto rheological adjustable damping further comprises a horizontal pushing trainer, the top of the horizontal pushing trainer is connected with the top cross rod of the main body support 6 in a sliding mode, two ends of the rear part of the horizontal pushing trainer span a series of pulleys through a third traction rope, the horizontal pushing trainer is suspended above the seat 9 and comprises a second pull handle 8, and the third traction rope and the second traction rope are connected through a second pulley block. The exerciser can do the flat push training by holding the second handle 8 and pushing forwards. Alternatively, the flat push training and the leg training may be performed simultaneously.

In the embodiment of the present invention, the current level in the adjustable magnetorheological damper 1 can be adjusted by electrically controlling "stiffness" of the magnetorheological fluid passing through the fluid gap 023 (the larger the current is, the larger the "stiffness" of the magnetorheological fluid is), so as to adjust the motion resistance of the working piston 02, and the adjustable damping force is transmitted to the exerciser via the piston rod 03 and other components as the exercise load.

In the present invention, the term "exerciser" should be understood in a broad sense, that is, not only the exerciser, but also some group or patient who needs rehabilitation training. The utility model can be used for general body-building purposes, but also can be used for rehabilitation training purposes of partial patients, and is used for training arm strength, wrist strength, leg strength and the like.

The utility model discloses use the adjustable characteristic of resistance of one or two less adjustable magnetorheological damper, replace traditional dumbbell piece or bogie plate in order to increase and decrease the load. The weight and the volume of the whole device can be reduced. The coil current in the adjustable magneto-rheological damper is controlled by the control device to adjust the load, and the whole adjusting process is continuous and has no noise. Moreover, the magnetorheological fluid belongs to an automatic protection device, and the body cannot be pulled to be injured due to sudden falling of the load bearing plate if the hands of a exerciser slide suddenly carelessly in the using process. In addition, the control knob of the control device is provided with a weight mark and rotates to different positions to display different weights, so that the load visualization is realized.

The foregoing description of several embodiments of the invention has been presented for the purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the invention to the precise features and/or forms disclosed.

Obviously, many modifications and variations are possible in light of the above teaching and are within the scope of the invention. The scope of the present invention is limited only by the appended claims.

Claims

1. A sitting posture trainer with magnetorheological adjustable damping, comprising:

a main body support;

a seat, a load device and a load traction device which are arranged on the main body bracket; and

an exerciser force device configured to be connected to the load device through the load traction device so as to apply a load of the load device to an exerciser through the load traction device and the exerciser force device for exercise;

it is characterized in that the preparation method is characterized in that,

the load device is an adjustable magnetorheological damper which can be controlled by a control device, and the damping of magnetorheological fluid in the adjustable magnetorheological damper is adjustable, so that the load applied to the exerciser by the load traction device and the exerciser stressing device is also adjustable.

2. A sitting posture trainer with magnetorheological adjustable damping, comprising:

a main body support;

a seat mounted on the main body bracket, wherein the seat is fixed to the main body bracket; and

a load traction device;

it is characterized in that the preparation method is characterized in that,

the sitting posture trainer with the magnetorheological adjustable damping further comprises an adjustable magnetorheological damper and a control device, wherein the adjustable magnetorheological damper is positioned behind the seat or positioned on either side or both sides of the seat; and

the body builder stressing device is connected to the adjustable magnetorheological damper through the load traction device;

the control device is configured to be operatively and electrically coupled to the adjustable magnetorheological damper to vary the magnitude of the damping thereof by controlling the magnitude of the excitation current in the adjustable magnetorheological damper, thereby varying the magnitude of the load applied by the adjustable magnetorheological damper to the exerciser via the load traction device and the exerciser force application device.

3. The adjustable damped magneto rheological trainer as claimed in claim 1 or 2, wherein the adjustable damped magneto rheological trainer further comprises a traction force feedback meter disposed at an end of the load traction device connected to the adjustable magneto rheological damper.

4. The sitting trainer with magnetorheological adjustable damping as claimed in claim 1 or 2, wherein the adjustable magnetorheological damper comprises a cylinder barrel, a floating piston, a working piston and a piston rod fixedly connected with the working piston,

the working piston divides a space for containing magnetorheological fluid serving as working fluid in the cylinder barrel into a rod magnetorheological fluid bin close to one side of the top of the cylinder barrel and a rodless magnetorheological fluid bin close to one side of the bottom of the cylinder barrel in the length direction of the cylinder barrel;

one end of the piston rod is fixedly connected with the working piston, and the other end of the piston rod penetrates through a sealing upper end cover arranged at the top of the cylinder barrel and extends out of the cylinder barrel;

the working piston comprises a magnetic conduction core and a magnetic conduction outer wall, a liquid passing gap for magnetorheological fluid to pass through is arranged between the magnetic conduction core and the magnetic conduction outer wall, and the liquid passing gap is communicated with the rod-type magnetorheological fluid bin and the rodless magnetorheological fluid bin;

and during the working period of the adjustable magnetorheological damper, the current applied to the excitation coil positioned at or near the working piston is changed to change the magnetic field intensity applied to at least the position of the liquid passing gap, so that the flow resistance of the magnetorheological liquid flowing between the rod-type magnetorheological liquid cabin and the rodless magnetorheological liquid cabin through the liquid passing gap is adjusted, the damping force of the piston movement of the working piston in the cylinder barrel is adjusted, and the damping provided by the adjustable magnetorheological damper is adjustable.

5. The adjustable magnetorheological damping sitting trainer as claimed in claim 4, wherein the adjustable magnetorheological damper further comprises a nitrogen bin at the bottom of the cylinder, wherein the nitrogen bin is disposed between the floating piston and the bottom of the cylinder.

6. A sitting trainer with adjustable damping of magnetorheological fluid as claimed in claim 1 or 2 wherein the exerciser's stress applying means is a grip means, a foot pedal means or a body part load traction means.

7. A sitting trainer with magnetorheological adjustable damping as claimed in claim 1 or 2, wherein the control device comprises a control knob on a control box, wherein the magnitude of the exciting current applied to the adjustable magnetorheological damper can be adjusted by the control knob.

8. The adjustable damping sitting trainer as claimed in claim 1 or claim 2, wherein the exerciser's force means comprises a pull-down trainer connected to the adjustable magnetorheological damper by a first pull-cord over a series of pulleys, the pull-down trainer suspended above the seat and comprising a first handle.

9. The adjustable damped magnetorheological damping sitting trainer as claimed in claim 8, further comprising a foot mount connected to the bottom of the body bracket by a second pull line over a series of pulleys, the second pull line and the first pull line connected by a first pulley block.

10. The adjustable damped seating trainer of claim 9, further comprising a push trainer, the top of the push trainer being slidably connected to the top rail of the body frame, the ends of the rear portion of the push trainer being connected across a series of pulleys by a third pull line, the push trainer being suspended above the seat and including a second pull handle, the third pull line and the second pull line being connected by a second pulley block.