CN211752148U - Portable magnetic control resistance-adjusting gravity training machine - Google Patents

Portable magnetic control resistance-adjusting gravity training machine Download PDF

Info

Publication number
CN211752148U
CN211752148U CN202020025136.9U CN202020025136U CN211752148U CN 211752148 U CN211752148 U CN 211752148U CN 202020025136 U CN202020025136 U CN 202020025136U CN 211752148 U CN211752148 U CN 211752148U
Authority
CN
China
Prior art keywords
swing
synchronous
magnetic
magnetic control
chair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202020025136.9U
Other languages
Chinese (zh)
Inventor
曾乾昌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202020025136.9U priority Critical patent/CN211752148U/en
Application granted granted Critical
Publication of CN211752148U publication Critical patent/CN211752148U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Rehabilitation Tools (AREA)

Abstract

The utility model discloses a lightweight magnetic control resistance-adjusting gravity training machine, its key feature includes: a chair, which comprises a placing frame, a chair seat and a chair back; the two synchronous swinging frames are vertically arranged at the back of the chair back, the rotating support ends of the two synchronous swinging frames are pivoted on the chair back, the swinging ends of the two synchronous swinging frames are in symmetrical synchronous swinging relation by utilizing a synchronous transmission mechanism, and the chair back is provided with a swinging angle locking component for locking the synchronous swinging frames; the magnetic control resistance adjusting device comprises a magnetic control main machine and a magnetic resistance adjusting component, wherein the magnetic control main machine is arranged on the placing frame and comprises a stay cable leading-in port and a return force turntable; the two pulling components comprise two pull cables and two handles, the lower ends of the pull cables are wound on the return force rotating disc, the upper ends of the pull cables extend to the swinging ends of the synchronous swinging frames, and the handles are connected to the upper ends of the pull cables; the utility model discloses have light weight miniaturization and the adjustable function of gravity concurrently.

Description

Portable magnetic control resistance-adjusting gravity training machine
Technical Field
The utility model relates to a sports fitness equipment, in particular to an innovative portable magnetic control resistance-adjusting gravity training machine.
Background
The gravity training machine is one of the common sports fitness equipment in the market at present, and mainly utilizes the design of a counterweight mechanism to help a user to exercise body muscles such as hands or legs.
The present general gravity training machine is well known to related users, and usually a plurality of stacked weight blocks are disposed at one position of the machine body, and when the user operates the machine, the user can select the weight blocks inserted and assembled at different height positions through a bolt, so as to determine the gravity strength when operating the gravity training machine, thereby satisfying different use requirements.
However, the gravity training machine is found in practical application experience because the whole structure of the gravity training machine is limited by the necessity of arranging the counterweight block, so that the machine body is heavy and the size is difficult to further miniaturize, which causes the gravity training machine to be usually found only in the gymnasium, and the general consumers are often done based on the above problems if they want to buy, which results in the situation that the gravity training machine is difficult to popularize in the general home environment for a long time.
Although there is another gravity training machine developed in the related industry, which uses the elastic pull rope instead of the weight block to achieve the purpose of gravity training, the weight of the gravity training machine is reduced because the weight block is omitted, but the elastic pull rope cannot be adjusted due to only a single resistance in use, which results in the disadvantage that the requirement of the user for multi-level exercise cannot be met.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a lightweight magnetic control resistance-adjusting gravity training machine.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a portable magnetic control resistance-adjusting gravity training machine comprises: the chair comprises a placing frame, a chair seat and a chair back, wherein the chair seat is provided with a front side and a rear side, the placing frame is arranged and positioned below the chair seat, and the chair back is vertically arranged above the rear side of the chair seat; the two synchronous swing frames are vertically arranged at the back of the chair back and are provided with rotating support ends and swing ends, each rotating support end is pivoted on the chair back structure, each swing end extends upwards to the upper part of the chair back to form a use state that the swing ends of the synchronous swing frames can swing by taking the rotating support end as a pivot point, a synchronous transmission mechanism is arranged between the two rotating support ends arranged on the two synchronous swing frames to ensure that the two swing ends arranged on the two synchronous swing frames are in a symmetrical synchronous swing relationship, and a swing angle locking component is arranged at the back of the chair back to lock the swing angles of the two swing ends arranged on the two synchronous swing frames; a magnetic control resistance adjusting device, which comprises a magnetic control host and a magnetic resistance adjusting component, wherein the magnetic control host is arranged on the placing frame structure, the magnetic control host comprises a guy cable leading-in port and a return force turntable, the return force turntable has a return elastic force in a rotating direction, the magnetic resistance adjusting component is arranged and positioned at one part of the chair, the magnetic control host comprises a metal flywheel and a magnetic resistance component, the metal flywheel and the return force turntable are arranged at intervals, the metal flywheel and the return force turntable are connected through a linkage piece to form a synchronous rotating relation, the magnetic resistance component is arranged at one part of the metal flywheel and is in a movable state, and the magnetic resistance adjusting component is connected with and controls the position of the magnetic resistance component; two pulling members, including two pulling cables and two handles, in which every pulling cable has upper end and lower end, the lower ends of two pulling cables are extended to the leading-in mouth of pulling cable which is set on the magnetic control main machine, and are recoiled on the return force rotating disk, and the upper ends of two pulling cables are respectively extended to two swinging ends of two synchronous swinging frames so as to make two handles respectively connected with the upper ends of two pulling cables.
By means of the innovative structure and technical features, the gravity training machine of the present invention achieves practical improvement and better industrial economic benefit with light weight and miniaturization of structure and adjustable function of gravity, compared with the prior art.
The other purpose of the utility model is that the magnetic resistance adjusting component is arranged in the middle of the front side of the chair seat; the magnetic resistance adjusting part is in a rotary button shape, the middle part of the front side of the chair seat is provided with an inner notch, so that the magnetic resistance adjusting part is arranged in the inner notch and has another technical characteristic of a configuration shape which protrudes upwards and inclines forwards by a set angle, when a user sits on the chair seat towards the front, the installation position of the magnetic resistance adjusting part is just positioned between two legs of the user, and the advantages and the practical progress of facilitating the manual rotation control operation are achieved.
The present invention further provides a chair having two upper limit idlers and two lower limit idlers spaced from each other and disposed in pairs at positions corresponding to the extending paths of the two cables, wherein the upper limit idlers and the lower limit idlers are orthogonal to each other in the axial direction of the axles thereof, so as to form another technical feature that the upper limit idlers and the lower limit idlers slide against two sides of the corresponding cables, which are different from each other in the orthogonal direction, thereby stably limiting the state of the cables when being pulled and displaced.
The utility model discloses a still another purpose, it has the bottom plate to more install the location through putting the frame bottom, the bottom plate forms and steps on another technical characteristic of tread, let the user when the operation, one of them foot can step on stepping on the tread of bottom plate, with pressing down through human weight and stabilizing and putting the frame, another foot then lets one of them gloves, and the cooperation is with the swing end locking of synchronous swing span angle state down, under this state, the user can carry out the action that the back swing foot carried out shank muscle and takes exercise, thereby increase the diversity and the practical value of gravity training machine motion body-building form.
Drawings
FIG. 1 is a front perspective view of a preferred embodiment of the present invention;
FIG. 2 is a rear perspective view of the preferred embodiment of the present invention;
FIG. 3 is a side view of the preferred embodiment of the present invention;
FIG. 4 is a diagram of a preferred embodiment of the internal configuration of the magnetic control host of the present invention;
FIG. 5 is an enlarged perspective view of the embodiment of the reluctance adjusting member of the present invention in the form of a knob;
FIG. 6 is a perspective enlarged view of the swing end of the synchronous swing frame of the present invention, which is provided with an idle wheel and a limit rod;
FIG. 7 is a schematic diagram of the adjustment status of two synchronous swinging frames of the present invention in a symmetrical synchronous swinging relationship;
FIG. 8 is a perspective enlarged view of the synchronous transmission mechanism and the swing angle locking member of the present invention;
FIG. 9 is a view of the embodiment of the present invention in which the chair back is provided with an upper limit idler and a lower limit idler at the position corresponding to the extending path of the pulling cable;
FIG. 10 is a first diagram illustrating a use operation state of the preferred embodiment of the present invention;
FIG. 11 is a second diagram illustrating a second operation state of the preferred embodiment of the present invention;
FIG. 12 is a third diagram illustrating a use operation state of the preferred embodiment of the present invention;
FIG. 13 is a diagram of an embodiment of the present invention in which a bottom plate is further installed at the bottom end of the placement frame;
FIG. 14 is a functional diagram of the embodiment shown in FIG. 13.
Detailed Description
Please refer to fig. 1 to 9, which illustrate preferred embodiments of the portable magnetic control resistance-adjusting gravity training machine of the present invention, but these embodiments are only for illustrative purposes and are not limited by the structure in the patent application.
The portable magnetic control resistance-adjusting gravity training machine comprises the following components: a chair 10 comprising a resting frame 11, a seat 12 and a back 13, wherein the seat 12 has a front side 123 and a rear side 125, the resting frame 11 is disposed below the seat 12, and the back 13 is disposed upright above the rear side 125 of the seat 12; two synchronous swing frames 20 erected behind the backrest 13, each of the two synchronous swing frames 20 having a rotation support end 21 and a swing end 22, wherein each rotation support end 21 is pivotally assembled on the backrest 13 structure, each swing end 22 extends upward above the backrest 13 to form a use state that the swing end 22 of each synchronous swing frame 20 can swing with the rotation support end 21 as a pivot point, and a synchronous transmission mechanism 30 is arranged between the two rotation support ends 21 to enable the two swing ends 22 of the two synchronous swing frames 20 to have a symmetrical synchronous swing relationship (i.e. a relatively open-close type swing state), and a swing angle locking member 40 is arranged behind the backrest 13 to lock the swing angle state of the two swing ends 22 of the two synchronous swing frames 20; a magnetic control resistance adjusting device 50 comprises a magnetic control main machine 51 and a magnetic resistance adjusting component 52, wherein the magnetic control main machine 51 is arranged on the structure of the placing frame 11, the magnetic control main machine 51 comprises a cable introducing port 511 and a return force rotating disc 512 arranged in the cable introducing port 511, the return force rotating disc 512 has a return elastic force (note: can be achieved by the arrangement of a torsion spring) in the rotating direction, the magnetic resistance adjusting component 52 is arranged and positioned at one position of the chair 10, the magnetic control main machine 51 comprises a metal flywheel 513 and a magnetic resistance component 514, wherein the metal flywheel 513 and the return force rotating disc 512 are in a spaced arrangement relationship, and are connected by a connecting piece 515 (can be but not limited by a belt) to form a synchronous rotating relationship, the magnetic resistance component 514 is arranged at one position of the metal flywheel 513 to form a movable state, and the magnetic resistance adjusting component 52 is connected to control and adjust the position of the magnetic resistance component 514, thereby adjusting the resistance to rotation of the metal flywheel 513; the two pulling members 60 include two pulling cables 61 and two handles 62, wherein each pulling cable 61 has an upper end 612 and a lower end 614, the lower ends 614 of the two pulling cables 61 extend to a cable introducing port 511 (shown in fig. 4) of the magnetic control host 51, the two pulling cables are wound on the return turntable 512, and the upper ends 612 of the two pulling cables 61 extend to the two swinging ends 22 of the two synchronous swinging frames 20, respectively, so that the two handles 62 are connected to the upper ends 612 of the two pulling cables 61, respectively.
As shown in FIGS. 1 and 5, in this embodiment, the reluctance-adjusting member 52 is mounted at the middle of the front side 123 of the seat 12. The magnetic resistance adjusting component 52 is in a shape of a rotating knob, and an inner notch 127 is arranged in the middle of the front side 123 of the seat 12, so that the magnetic resistance adjusting component 52 is arranged in the inner notch 127 and is in a configuration shape of protruding upwards and inclining forwards by a set angle (such as 10 degrees to 20 degrees); the embodiment shown in this example has the advantage that the magnetic resistance adjusting member 52 is disposed between the legs of the user when the user sits on the seat 12 facing forward, thereby facilitating manual rotation.
As shown in fig. 8, in this embodiment, the synchronous transmission mechanism 30 includes two sector gears 31 respectively disposed at two rotation supporting ends 21 of the two synchronous swinging frames 20, the two sector gears 31 are engaged with each other, so that two swinging ends 22 of the two synchronous swinging frames 20 are in a symmetrical synchronous swinging relationship; the swing angle locking member 40 includes a segment positioning plate 41 and a locking button 42, wherein the segment positioning plate 41 is fixedly coupled to any one of the rotating support ends 21, the segment positioning plate 41 is formed with a plurality of pin holes 415 arranged at intervals, and the pin holes 415 are arranged along the swing of the rotating support end 21 in an arc path; a rear frame plate 14 is installed and positioned behind the backrest 13, so that the locking button 42 is installed at one position of the rear frame plate 14, and the locking button 42 has a post 425, the post 425 is inserted into one of the corresponding pin holes 415 of the segment positioning plate 41, thereby locking the swing angle state of the two swing ends 22.
In detail, as shown in fig. 6, in this embodiment, the swing end 22 of each synchronous swing frame 20 is further rotatably provided with an idle pulley 23 and a limit rod 24 located at a space above the idle pulley 23, wherein the idle pulley 23 is for the upper end 612 of the corresponding cable 61 to pass by, and the limit rod 24 is for the corresponding handle 62 to abut against when being retracted.
As shown in fig. 2 and 9, in this embodiment, two upper limit idlers 71 and two lower limit idlers 72 are installed at the extending path of the seat back 13 corresponding to the two cables 61, which are spaced up and down and are arranged in pairs, and the axial direction of the axle of the upper limit idler 71 and the axial direction of the axle of the lower limit idler 72 are orthogonal (i.e. perpendicular to each other), so as to form a limit state in which the upper limit idler 71 and the lower limit idler 72 slide against two sides of the corresponding cable 61, which are orthogonal and different from each other; in the embodiment shown in this example, the upper limit idle pulley 71 and the lower limit idle pulley 72 are arranged to stably restrict the state of the cable 61 when it is pulled and displaced.
Through the structural configuration and technical characteristics, in practical use, as shown in fig. 7, the portable magnetic control resistance-adjusting gravity training machine of the present invention is firstly adjusted and determined by the user by the swing angle of the swing end 22 of the two synchronous swing frames 20, and then locked by the swing angle locking member 40; then, as shown in fig. 10 or fig. 11, the user can sit the buttocks on the seat 12 of the chair 10, the face and the body can face forward, or face backward as shown in fig. 12, then hold the two handles 62 with both hands respectively to pull, when the two handles 62 are pulled out, the two cables 61 are pulled at the same time, and the return force dial 512 connected to the lower ends 614 of the two cables 61 is rotated, and then the return force elastic force is accumulated (please refer to fig. 4), so when the user's hand pulling force is released, the return force dial 512 reversely drives the cables 61 and the handles 62 to recover and reset, on the other hand, when the return force dial 512 rotates, the metal flywheel 513 is synchronously driven to rotate by the linking part 515, and the resistance of the metal flywheel 513 to rotate is controlled by the magnetic resistance adjusting part 52, that is, the resistance when the user's hand pulls the handle 62, that is, is adjusted and controlled by the magnetic resistance adjusting part 52, thereby realizing the requirements of different exercise strengths and different gravity training.
To sum up, it is visible to explain, compare in current gravity training machine, the utility model discloses lightweight magnetic control resistance-adjusting gravity training machine is except aforementioned adjustable function of gravity, more replaces current stack formula balancing weight through magnetic control resistance-adjusting device 50, and so, makes the utility model discloses lightweight magnetic control resistance-adjusting gravity training machine overall framework is almost not big with the shared volume of general chair and weight difference, even makes to put in general house environment, also does not lead to the worry that occupies too much the space to exist, and gravity training machine reaches the practical progressive nature that has the miniaturized and adjustable function of gravity of structure light weight concurrently, and this is a big help to the popularization of gravity training machine product undoubtedly.
As shown in fig. 13 and 14, in this embodiment, a bottom plate 80 is installed and positioned at the bottom end of the placing frame 11, the bottom plate 80 forms a stepping surface 81, and a plurality of rollers 82 are installed at intervals on one side of the bottom plate 80, and when the bottom plate 80 is in an inclined angle state, the plurality of rollers 82 are in a landing rolling state (note: the portable magnetic control resistance-adjusting gravity training machine for easily moving the whole platform); in this embodiment, the structural design of the bottom plate 80 is mainly introduced, so that a user can step on the stepping surface 81 of the bottom plate 80 as shown in fig. 14 during operation, so as to press down the stable placing frame 11 by the weight of the human body, and the other foot can be sleeved by one of the handles 62, and the swinging end 22 of the synchronous swinging frame 20 is adjusted and locked in a downward angle state in a matching manner, so that the user can do the exercise action of swinging the foot backwards to exercise the leg muscles, therefore, the practical exercise training program of the utility model is not limited to hands, and can further meet the multiple use requirements.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. The utility model provides a lightweight magnetic control resistance-adjusting gravity training machine which characterized in that includes:
the chair comprises a placing frame, a chair seat and a chair back, wherein the chair seat is provided with a front side and a rear side, the placing frame is arranged and positioned below the chair seat, and the chair back is vertically arranged above the rear side of the chair seat;
the two synchronous swing frames are vertically arranged at the back of the chair back and are provided with a rotating support end and a swing end, wherein each rotating support end is pivoted on the chair back structure, each swing end extends upwards to the upper part of the chair back to form the swing end of each synchronous swing frame which can swing by taking the rotating support end as a rotating fulcrum, a synchronous transmission mechanism is arranged between the two rotating support ends arranged on the two synchronous swing frames to ensure that the two swing ends arranged on the two synchronous swing frames are in a symmetrical synchronous swing relationship, and a swing angle locking component is arranged at the back of the chair back to lock the swing angles of the two swing ends arranged on the two synchronous swing frames;
a magnetic control resistance adjusting device, which comprises a magnetic control host machine and a magnetic resistance adjusting component, wherein the magnetic control host machine is arranged on the placing frame structure, the magnetic control host machine comprises a guy cable leading-in port and a return force turntable arranged in the guy cable leading-in port, the return force turntable has a return force in the rotating direction, the magnetic resistance adjusting component is arranged and positioned at one position of the chair, the magnetic control host machine also comprises a metal flywheel and a magnetic resistance component, the metal flywheel and the return force turntable are in interval configuration relationship, and are connected by a connecting piece to form synchronous rotating relationship, the magnetic resistance component is arranged at one position of the metal flywheel and is in a movable state, and the magnetic resistance adjusting component is connected to control and adjust the position of the magnetic resistance component; and
two pulling members, including two pulling cables and two handles, in which each pulling cable has an upper end and a lower end, the lower ends of the two pulling cables are extended to the leading-in port of the pulling cable set in the magnetic control main machine, and are wound on the return force turntable, and the upper ends of the two pulling cables are extended to the two swinging ends of the two synchronous swinging frames respectively, so that the two handles are connected to the upper ends of the two pulling cables respectively.
2. The portable magnetic control resistance-adjusting gravity training machine according to claim 1, wherein the magnetic resistance adjusting component is installed at the middle of the front side of the chair seat.
3. The portable magnetic controlled resistance-adjusting gravity training machine according to claim 2, wherein the magnetic resistance adjusting member is in the form of a knob, and an inner recess is formed in the middle of the front side of the seat, so that the magnetic resistance adjusting member is disposed in the inner recess and is in the configuration of protruding upward and inclining forward by a predetermined angle.
4. The portable magnetic control resistance-adjusting gravity training machine according to claim 3, wherein the synchronous transmission mechanism comprises two sector gears respectively disposed at two rotation support ends of the two synchronous swing frames, the two sector gears are engaged with each other to make the two swing ends of the two synchronous swing frames in a symmetrical synchronous swing relationship; the swing angle locking component comprises a subsection positioning plate and a locking button, wherein the subsection positioning plate is combined and fixed at any one of the rotation supporting ends, a plurality of pin holes which are arranged at intervals are formed in the subsection positioning plate, and the pin holes are arranged along the swing of the rotation supporting end in an arc path; a rear frame plate is arranged and positioned at the rear part of the chair back, so that the locking button is arranged at one position of the rear frame plate and is provided with an inserting column which is used for being inserted into one of the corresponding pin holes arranged on the segmented positioning plate, and the swinging angle of the two swinging ends is locked.
5. The portable magnetic controlled resistance-adjusting gravity training machine according to claim 4, wherein the swing end of each synchronous swing frame is further provided with an idler and a stop lever at a space above the idler, wherein the idler is used for the upper end of the corresponding pulling cable to pass by, and the stop lever is used for the corresponding handle to abut against when being recovered.
6. The portable magnetic controlled resistance-adjusting gravity training machine as claimed in claim 5, wherein the seat back is further provided with two upper limit idlers and two lower limit idlers at the extending path of the two cables, the upper limit idlers and the lower limit idlers being spaced up and down and arranged in pairs, and the axial direction of the axles of the upper limit idlers and the axial direction of the axles of the lower limit idlers are orthogonal to each other, so that the upper limit idlers and the lower limit idlers slide against the two sides of the corresponding cables, which are orthogonal to each other.
7. The portable magnetic controlled resistance-adjusting gravity training machine according to claim 1, wherein a bottom plate is further installed and positioned at the bottom end of the placement frame, and the bottom plate forms a tread surface.
8. The portable magnetically controlled resistance-adjusting gravity training machine according to claim 7, wherein a plurality of rollers are disposed at intervals on one side of the base plate.
CN202020025136.9U 2020-01-07 2020-01-07 Portable magnetic control resistance-adjusting gravity training machine Active CN211752148U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020025136.9U CN211752148U (en) 2020-01-07 2020-01-07 Portable magnetic control resistance-adjusting gravity training machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020025136.9U CN211752148U (en) 2020-01-07 2020-01-07 Portable magnetic control resistance-adjusting gravity training machine

Publications (1)

Publication Number Publication Date
CN211752148U true CN211752148U (en) 2020-10-27

Family

ID=72888955

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020025136.9U Active CN211752148U (en) 2020-01-07 2020-01-07 Portable magnetic control resistance-adjusting gravity training machine

Country Status (1)

Country Link
CN (1) CN211752148U (en)

Similar Documents

Publication Publication Date Title
US20050101447A9 (en) Dual-function treading exerciser
US20090111663A1 (en) Elliptical exercise machine
US7651443B1 (en) Exercise apparatus
US7976440B2 (en) Upper back exercise machine with self-aligning pivoting user support
US6652425B1 (en) Cyclocentric ergometer
US5039088A (en) Exercise machine
US7654941B2 (en) Exercise apparatus
TW201630637A (en) Rowing exercise device and method of using same
US20060148622A1 (en) Multi-functional exercising device
US20050288155A1 (en) Elliptical exerciser
CN210409377U (en) Fixed bicycle type exercising apparatus
CN113457079B (en) Sit-up trainer
CN104027930A (en) Foldable domestic exercise equipment
KR100651259B1 (en) Multi-functional weight training device
CN211752148U (en) Portable magnetic control resistance-adjusting gravity training machine
EP2000178A1 (en) Stationary exercise device
WO2003013663A1 (en) Multi-exercise cable gym system
CN219023120U (en) Exercise apparatus system
US9149679B2 (en) Elastomeric cord-resistance unit
US20190038034A1 (en) Fitness stool
CN215505345U (en) Body-building bicycle with backrest
CN202028113U (en) Linkage type multifunctional exercising device
CN212593801U (en) Sports aerobics exercises training stretching device
CN111514523B (en) Sports equipment
TWM593273U (en) Lightweight magnetic control gravity resistance training machine

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant