CN114225301A

CN114225301A - Leg beautifying device

Info

Publication number: CN114225301A
Application number: CN202210035380.7A
Authority: CN
Inventors: 王晓娇
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-03-25
Anticipated expiration: 2042-01-13
Also published as: CN114225301B

Abstract

The invention belongs to the technical field of fitness equipment, and particularly relates to a leg beautifying device which comprises a connecting shaft, a left support and a right support, wherein a rear cover, a rotating part, a torsion spring, a limiting part, a first elastic part and a front cover are sequentially sleeved on the connecting shaft; the arc-shaped working groove is formed in the right support, the button matched with the arc-shaped working groove is arranged on the left support, when the button is separated from the arc-shaped working groove, the left support can drive the rotating piece to rotate, the rotating piece rotates to push the limiting piece away to enable the latch sets to be separated from each other, the torsional spring drives the limiting piece to rotate, and the first elastic piece drives the latch sets to be meshed with each other. Has the advantages that: the leg beautifying device ingeniously realizes the adjustment of the torsion force of the torsion spring, and has the advantages of simple and reliable structure, convenient and humanized operation, reasonable and compact layout, and small size and portability.

Description

Leg beautifying device

Technical Field

The invention belongs to the technical field of fitness equipment, and particularly relates to a leg beautifying device.

Background

With the improvement of living standard of people, the enthusiasm of national fitness keeps rising, various fitness equipment is continuously updated, and a great deal of market demands are also made on local fitness equipment such as buttocks, legs, pelvic floor muscles and the like. The pelvic floor muscle is a muscle group closing the pelvic floor, the muscle group is like a 'hanging net', and organs such as urethra, bladder, vagina, uterus, rectum and the like are tightly hung by the 'net', so that the normal position is maintained to perform the function of the muscle group.

The existing leg beautifying device has the functions of exercising legs, buttocks, pelvic floor muscles and the like, is a local fitness device advocated by modern people and is particularly popular to women, such as a multifunctional fitness device disclosed in the prior patent 202023277566.9 and a leg beautifying device disclosed in the prior patent 200920243636.3. However, the existing leg beautifying device has a big defect that the resistance between two force arms is fixed and unadjustable, some trainees with small strength train hard, and trainees needing high-strength training cannot achieve good training effect, so that the application range is small, and the resistance cannot be gradually adjusted, so that the trainees cannot perform individual advanced training.

Disclosure of Invention

In order to solve the problem that the resistance between two force arms of the leg beautifying device in the prior art is fixed and cannot be adjusted, the invention provides the leg beautifying device.

In order to solve the technical problems, the technical scheme adopted by the invention is that the leg beautifying device comprises a connecting shaft, a left support and a right support, wherein a rear cover, a rotating piece, a torsion spring, a limiting piece, a first elastic piece and a front cover are sequentially sleeved on the connecting shaft;

the arc work groove has been seted up on the right branch frame, be provided with on the left branch frame with arc work groove complex button, work as when the button breaks away from arc work groove, the left branch frame can drive the rotating member rotatory, just the rotating member is rotatory to be pushed away the locating part and makes latch group break away from each other, and torsional spring drive locating part is rotatory, first elastic component drive latch group intermeshing.

As preferred, the one end of right branch frame is run through there is the control chamber, the control chamber cover is established on the locating part, latch group is including intermeshing's first latch and second latch, first latch sets up in the control chamber, the second latch sets up on the locating part, the periphery of locating part is provided with the second elastic component, it is protruding to have the circular arc around its circumference extension on the inside wall in control chamber, the inclined plane extension setting of the last tooth of first latch makes the second elastic component rises to the bellied top of circular arc and pops open, just the second latch breaks away from first latch. The second elastic component rises to the upper side of the arc protrusion and springs open, the latch groups are separated from each other, the arc protrusion limits the latch groups to be meshed again, after the limiting component rotates around to reset, the second elastic component descends to the lower side of the arc protrusion and contracts, the latch groups can be meshed again, and resetting of the latch groups is ingeniously achieved.

Preferably, a spring cavity penetrates through one end of the left support, the spring cavity is sleeved on the rotating part, an arc virtual position is formed in the rotating part, a force adjusting protrusion extends from the left support, the force adjusting protrusion is located in the arc virtual position, and when the button is separated from the arc working groove, the force adjusting protrusion is in contact with the end portion of the arc virtual position to enable the left support to drive the rotating part to rotate. Simple structure is reliable, design benefit, the assembly and the control of left socle and rotating member of being convenient for.

Preferably, a first arc-shaped inclined surface extends from the rotating member, a second arc-shaped inclined surface extends from the limiting member, and when the rotating member rotates, the first arc-shaped inclined surface and the second arc-shaped inclined surface cooperate to axially push away the limiting member so that the latch sets are disengaged from each other. The structure is simple and reliable, the design is ingenious, and the rotating piece can be pushed away from the limiting piece in the axial direction conveniently.

Preferably, the top end of the limiting member is provided with an arc-shaped force adjusting groove, the front cover extends to form a safety protrusion, the first elastic member is in a compressed state, and when the safety protrusion is opposite to the arc-shaped force adjusting groove, the rotating member rotates to push the limiting member away so that the latch sets are separated from each other. When the safety protrusion presses the limiting piece, the rotating piece rotates to push the limiting piece away, and only when the safety protrusion is opposite to the arc-shaped force adjusting groove, the rotating piece rotates to push the limiting piece away to enable the clamping tooth groups to be separated from each other, and the arrangement of the safety protrusion effectively prevents misoperation.

Preferably, the connecting shaft is further sleeved with a first bearing and a second bearing, bearing locking pieces are arranged at two ends of the connecting shaft, the rear cover is connected with an outer ring of the first bearing, and the front cover is connected with an outer ring of the second bearing. The first bearing and the second bearing are arranged, so that the leg beautifying device can run more smoothly, and noise is effectively prevented from being generated during use.

Further, the bearing locking piece comprises a screw and a gasket, the screw is fixedly connected with the end part of the connecting shaft in a threaded mode, and the gasket is located between the screw and the inner ring of the bearing. The bearing locking piece is simple and reliable in structure, convenient to assemble and low in cost.

Further, the first latch and the second latch are sequentially arranged around the rotation direction of the limiting part, and one side of each of the first latch and the second latch is provided with a guide inclined plane, so that the limiting part rotates in a single direction. The torsional spring drives the locating part to rotate, and because the locating part can only rotate unidirectionally on the guide inclined plane, when the locating part circles round, then need the second latch to break away from first latch, guarantee the reliability of second latch and first latch meshing.

Furthermore, the number of the first clamping teeth is consistent with that of the second clamping teeth, and force adjusting gears are formed between the adjacent teeth. The force-adjusting gears are sequentially marked as a first gear, a second gear, a third gear and a fourth gear along the clockwise direction, and the number of the gears is reasonably and reliably set.

Further, along the one-way rotation direction of the limiting piece, the radial thickness of the arc protrusion is gradually increased. The second elastic part rises to the upper part of the arc bulge and springs open, the second latch is separated from the first latch, and when the limiting part rotates to reset, the arc bulge is convenient for the second elastic part to reset.

Further, the second elastic piece is arc-shaped, an arc-shaped opening is formed in the second elastic piece, and the arc-shaped opening faces towards the one-way rotation direction of the limiting piece. The second elastic piece has ingenious structural design and is convenient for the return operation of the second elastic piece.

Preferably, the first elastic part is a first pressure spring, and the tail end of the first pressure spring is fixedly connected with the second elastic part. The first pressure spring is always in a compressed state, and effective meshing of the latch group is guaranteed.

Preferably, the supporting plate is rotatably arranged, and the rotating axis is perpendicular to the connecting shaft; the supporting plate is provided with a plurality of concave points which are sequentially arranged around the rotating axis of the supporting plate, the left support and the right support are both provided with a second pressure spring and a steel ball, and the steel ball is clamped into the corresponding concave points. The supporting plate is convenient to adjust the rotating angle, the supporting plate is in a fixed state after being adjusted in a rotating mode, the supporting plate is convenient to match with different parts such as legs and arms, the use comfort and the use reliability are improved, and the use range is enlarged.

Further, a counting sensor is arranged between the left bracket and the right bracket; and a counting display screen is arranged on the right bracket. The training measurement is convenient, and the user experience degree is improved.

Furthermore, the rear cover and the front cover are both provided with decorative covers, and the decorative covers are used for covering the first bearing and the second bearing. Effectively prevent dust and the like from damaging the leg beautifying device and improve the beauty of the leg beautifying device.

Furthermore, the decorative cover of the front cover is provided with marks of a training mode and a torque force adjusting mode, when the front cover is rotated to indicate the training mode, the button is positioned in the arc-shaped working groove, and when the front cover is rotated to indicate the torque force adjusting mode, the button is separated from the arc-shaped working groove. And more humanized display and debugging are realized.

Has the advantages that: according to the leg beautifying device, the left support can rotate reversely after the button is pushed down, the rotating piece is driven to push the limiting piece away while rotating, the torsion spring rotates to drive the limiting piece to rotate to the next clamping point, the first elastic piece acts on the limiting piece, the clamping tooth group returns to the position and is clamped into the next clamping point, one-time torsion force adjustment is completed, and adjustment of the torsion force of the torsion spring is ingeniously achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a front view of the leg beautifying device of the present invention;

FIG. 2 is a perspective view of the leg beautifying device of the present invention;

FIG. 3 is a schematic perspective view of another leg beautifying device according to the present invention;

FIG. 4 is an exploded view of the leg exerciser of the present invention;

FIG. 5 is an exploded view of another angle of the leg beautifying device of the present invention;

FIG. 6 is a schematic perspective view of a leg beautifying device according to the present invention;

FIG. 7 is a schematic perspective view of a limiting member and a rotating member of the leg beautifying device according to the present invention;

FIG. 8 is a perspective view of the right frame of the leg beautifying device of the present invention;

FIG. 9 is a schematic perspective view of another embodiment of the right stand of the leg beautifying device of the present invention;

in the figure: 1. the device comprises a connecting shaft, 2, a left support, 2-1, a spring cavity, 2-2, a force adjusting bulge, 3, a right support, 3-1, a control cavity, 3-2, a first latch, 3-21, a guide inclined plane, 3-22, a force adjusting gear, 3-3, an arc bulge, 3-4, an arc working groove, 4, a first bearing, 5, a rear cover, 6, a rotating piece, 6-1, an arc virtual position, 6-2, a first arc inclined plane, 7, a torsion spring, 8, a limiting piece, 8-1, a second arc inclined plane, 8-2, a second latch, 8-3, an arc force adjusting groove, 9, a first pressure spring, 10, a front cover, 10-1, a safety bulge, 11, a second bearing, 12, a bearing piece, 12-1, a screw, 12-2, a gasket, 13, a supporting plate, 13-1, a spring cavity, 2-2, a force adjusting bulge, a force adjusting groove, a spring, a second arc inclined plane, a spring, a gasket, a spring, a second arc bulge, a spring, a washer, a support, concave points, 14, a second elastic piece, 14-1, an arc-shaped opening, 15, a button, 16, a steel ball, 17, a second pressure spring, 18, a counting display screen, 19, a decorative cover, 20, a third pressure spring, 21 and foamed cotton.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

For convenience of description, in the present embodiment, the supporting plate 13 on the left bracket 2 is the left supporting plate 13, the supporting plate 13 on the right bracket 3 is the right supporting plate 13, and the present embodiment is described by taking the left thigh in contact with the left supporting plate 13, the right thigh in contact with the right supporting plate 13, and the front cover 10 facing upward as an example.

As shown in fig. 1 to 9, a leg beautifying device comprises a connecting shaft 1, a left bracket 2 and a right bracket 3, wherein a rear cover 5, a rotating member 6, a torsion spring 7, a limiting member 8, a first elastic member and a front cover 10 are sequentially sleeved on the connecting shaft 1, supporting plates 13 matched with limbs are respectively arranged on the left bracket 2 and the right bracket 3, the right bracket 3 is connected with the limiting member 8 through a clamping tooth group, the left bracket 2 is connected with the rotating member 6, and two ends of the torsion spring 7 are respectively fixedly connected with the left bracket 2 and the limiting member 8; the right support 3 is provided with arc-shaped working grooves 3-4, the left support 2 is provided with a button 15 matched with the arc-shaped working grooves 3-4, a third pressure spring 20 is arranged between the button 15 and the left support 2, when the button 15 is separated from the arc-shaped working grooves 3-4, the left support 2 can drive a rotating piece 6 to rotate, the rotating piece 6 rotates to push a limiting piece 8 away to enable a latch set to be separated from each other, a torsion spring 7 drives the limiting piece 8 to rotate, and the first elastic piece drives the latch sets to be meshed with each other.

In order to facilitate the reset of the latch set, in this embodiment, as shown in fig. 4 to 9, a control cavity 3-1 penetrates through one end of the right bracket 3, the control cavity 3-1 is sleeved on the limiting piece 8, the latch group comprises a first latch 3-2 and a second latch 8-2 which are meshed with each other, the first latch 3-2 is arranged in the control cavity 3-1, the second latch 8-2 is arranged on the limiting piece 8, a second elastic part 14 is arranged on the periphery of the limiting part 8, an arc protrusion 3-3 extends around the circumferential direction of the inner side wall of the control cavity 3-1, the inclined plane of the last tooth of the first latch 3-2 is extended, so that the second elastic part 14 rises above the arc protrusion 3-3 and springs open, and the second latch 8-2 is separated from the first latch 3-2; in this embodiment, in the counterclockwise one-way rotation direction of the limiting member 8, the radial thickness of the arc protrusion 3-3 gradually increases; in this embodiment, the second elastic element 14 is provided with an arc-shaped opening 14-1, and the arc-shaped opening 14-1 faces the counterclockwise one-way rotation direction of the limiting element 8; in a further embodiment, the first elastic member is a first compression spring 9, and a tail end of the first compression spring 9 is fixedly connected with a second elastic member 14.

In order to ensure reliable meshing of the latch set, in the present embodiment, as shown in fig. 8 and 9, the first latch 3-2 and the second latch 8-2 are sequentially arranged around the rotation direction of the limiting member 8, and one side of each of the first latch 3-2 and the second latch 8-2 is provided with a guiding inclined surface 3-21, so that the limiting member 8 rotates counterclockwise in one direction; further, in this embodiment, the number of the first latch 3-2 and the number of the second latch 8-2 are equal to five, a force-adjusting gear 3-22 is formed between adjacent latches, and the force-adjusting gear 3-22 is sequentially marked as a first gear, a second gear, a third gear and a fourth gear along the clockwise direction.

In order to facilitate assembly and control of the left bracket 2 and the rotating member 6, in this embodiment, as shown in fig. 4 to 9, a spring cavity 2-1 penetrates through one end of the left bracket 2, the spring cavity 2-1 is sleeved on the rotating member 6, an arc-shaped virtual position 6-1 is formed on the rotating member 6, a force adjusting protrusion 2-2 extends from the left bracket 2, the force adjusting protrusion 2-2 is located in the arc-shaped virtual position 6-1, and when the button 15 is separated from the arc-shaped working groove 3-4, the force adjusting protrusion 2-2 contacts with the end of the arc-shaped virtual position 6-1 to enable the left bracket 2 to drive the rotating member 6 to rotate; further, in this embodiment, a first arc-shaped inclined surface 6-2 extends from the rotating member 6, a second arc-shaped inclined surface 8-1 extends from the limiting member 8, and when the rotating member 6 rotates, the first arc-shaped inclined surface 6-2 and the second arc-shaped inclined surface 8-1 cooperate to push the limiting member 8 axially away, so that the latch sets are disengaged from each other.

In order to make the leg beautifying device operate more smoothly, in the embodiment, as shown in fig. 4 to 6, a first bearing 4 and a second bearing 11 are further sleeved on the connecting shaft 1, bearing locking members 12 are respectively arranged at two ends of the connecting shaft 1, the rear cover 5 is connected with an outer ring of the first bearing 4, and the front cover 10 is connected with an outer ring of the second bearing 11; in the embodiment, the bearing locking piece 12 comprises a screw 12-1 and a gasket 12-2, the screw 12-1 is fixedly connected with the end of the connecting shaft 1 in a threaded mode, and the gasket 12-2 is located between the screw 12-1 and the inner ring of the bearing.

In order to prevent the misoperation of adjusting the torque force, in this embodiment, as shown in fig. 4 to 6, an arc-shaped force-adjusting groove 8-3 is formed at the top end of the limiting member 8, a safety protrusion 10-1 extends from the front cover 10, the first elastic member is in a compressed state, and when the safety protrusion 10-1 is opposite to the arc-shaped force-adjusting groove 8-3, the rotating member 6 rotates to push the limiting member 8 open so as to separate the latch sets from each other.

In order to expand the application range and the use comfort of the support plate 13, in the embodiment, as shown in fig. 4 and 5, the support plate 13 is rotatably disposed, and the rotation axis is perpendicular to the connecting shaft 1; one surface of the supporting plate 13, which is in contact with the limb, is provided with foam cotton 21; the supporting plate 13 is provided with a plurality of concave points 13-1, the concave points 13-1 are sequentially arranged around the rotating axis of the supporting plate 13, the left support 2 and the right support 3 are respectively provided with a second pressure spring 17 and a steel ball 16, and the steel ball 16 is clamped in the corresponding concave point 13-1, so that the supporting plate 13 can be conveniently matched with different parts such as legs and arms.

In order to be more humanized and improve the user experience, in the embodiment, as shown in fig. 1 to 5, the rear cover 5 and the front cover 10 are both provided with a decorative cover 19, and the decorative cover 19 is used for covering the first bearing 4 and the second bearing 11; the decoration cover 19 of the front cover 10 is provided with marks of a training mode and a torque force adjusting mode, when the front cover 10 is rotated to indicate the training mode, the button 15 is positioned in the arc-shaped working groove 3-4, and when the front cover 10 is rotated to indicate the torque force adjusting mode, the button 15 is separated from the arc-shaped working groove 3-4; a counting sensor is arranged between the left bracket 2 and the right bracket 3, and the counting sensor is a Hall sensor; and a counting display screen 18 is arranged on the right bracket 3, so that the training and metering are facilitated.

The working principle is as follows:

a torsion adjusting mode:

firstly, rotating a front cover 10 until the front cover 10 drives a safety protrusion 10-1 to rotate to a position opposite to an arc-shaped force adjusting groove 8-3 of a limiting piece 8, and indicating a torque force adjusting mode by a mark on the front cover 10; then the button 15 is pressed, and the button 15 is separated from the arc-shaped working groove 3-4 of the right bracket 3; rotating the left support 2 counterclockwise, enabling a force adjusting bulge 2-2 of the left support 2 to be in contact with the end part of the arc-shaped virtual position 6-1 and continue to rotate counterclockwise, enabling the rotating piece 6 to rotate counterclockwise under the drive of the force adjusting bulge 2-2, enabling the latch groups to be separated from each other by pushing the limiting piece 8 away in the axial direction through the matching of the first arc-shaped inclined surface 6-2 and the second arc-shaped inclined surface 8-1, enabling the left support 2 to sequentially drive the torsion spring 7 and the limiting piece 8 to rotate counterclockwise, enabling the limiting piece 8 to drive the second latch 8-2 and the first latch 3-2 to be matched to the next gear, repeating the adjusting step, sequentially adjusting from one gear to four gears, rotating the left support 2 clockwise to reset after the adjustment is completed, and reinserting the button 15 into the arc-shaped working groove 3-4 of the right support 3 to complete the torsion adjustment of the torsion spring 7; the gear adjustment can be performed only from first gear to fourth gear in sequence, so that the torsion of the torsion spring 7 is continuously increased, the limiting part 8 continues to rotate anticlockwise after the fourth gear is adjusted, the inclined surface of the last tooth is extended, the second elastic part 14 rises above the arc protrusion 3-3 and springs open, the second latch 8-2 is separated from the first latch 3-2, the limiting part 8 rotates clockwise under the action of the torsion spring 7 and the first compression spring 9 to reset to the first gear, and the second elastic part 14 descends below the arc protrusion 3-3 and contracts to reset.

And (3) a normal working mode:

after the required torque is adjusted according to the torque adjusting process, the front cover 10 is rotated, so that the safety protrusion 10-1 presses the limiting piece 8 to prevent the limiting piece 8 from bouncing up, and the mark on the front cover 10 indicates a training mode; at the moment, the button 15 is inserted into the arc-shaped working groove 3-4 of the right bracket 3 and can move along the arc-shaped working groove 3-4; with left thigh and the contact of left branch fagging 13, right thigh and the contact of right branch fagging 13, and protecgulum 10 is up, the torsional spring 7 realizes the closed function of opening of left branch fagging 13 and right branch fagging 13, effectual shank, buttock and pelvic floor muscle of taking exercise.

It should be noted that this embodiment only gives an example of the leg beautifying device, and the leg beautifying device can also be used for exercising other body parts such as arms, thighs, and calves.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. A leg beautifying device is characterized in that: the limb fixing device comprises a connecting shaft (1), a left support (2) and a right support (3), wherein a rear cover (5), a rotating part (6), a torsion spring (7), a limiting part (8), a first elastic part and a front cover (10) are sequentially sleeved on the connecting shaft (1), supporting plates (13) matched with limbs are respectively arranged on the left support (2) and the right support (3), the right support (3) is connected with the limiting part (8) through a clamping tooth group, the left support (2) is connected with the rotating part (6), and two ends of the torsion spring (7) are respectively fixedly connected with the left support (2) and the limiting part (8);

arc work groove (3-4) have been seted up on right branch frame (3), be provided with on left branch frame (2) with arc work groove (3-4) complex button (15), work as when button (15) break away from arc work groove (3-4), left branch frame (2) can drive rotating member (6) rotatory, just rotating member (6) are rotatory to be pushed away locating part (8) and make latch group break away from each other, and torsional spring (7) drive locating part (8) are rotatory, first elastic component drive latch group intermeshing.

2. The leg beautifying device according to claim 1, wherein: one end of the right bracket (3) is penetrated with a control cavity (3-1), the control cavity (3-1) is sleeved on the limiting piece (8), the latch group comprises a first latch (3-2) and a second latch (8-2) which are meshed with each other, the first latch (3-2) is arranged in the control cavity (3-1), the second latch (8-2) is arranged on the limiting piece (8), a second elastic part (14) is arranged on the periphery of the limiting part (8), an arc bulge (3-3) extends on the inner side wall of the control cavity (3-1) around the circumferential direction thereof, the inclined plane of the last tooth of the first latch tooth (3-2) is arranged in an extending mode, so that the second elastic piece (14) rises above the arc protrusion (3-3) and springs open, and the second latch tooth (8-2) is separated from the first latch tooth (3-2).

3. The leg beautifying device according to claim 1, wherein: one end of the left support (2) penetrates through a spring cavity (2-1), the spring cavity (2-1) is sleeved on the rotating part (6), an arc virtual position (6-1) is arranged on the rotating part (6), a force adjusting protrusion (2-2) extends on the left support (2), the force adjusting protrusion (2-2) is located in the arc virtual position (6-1), and when the button (15) is separated from the arc working groove (3-4), the force adjusting protrusion (2-2) is in contact with the end of the arc virtual position (6-1) to enable the left support (2) to drive the rotating part (6) to rotate.

4. A leg beautifying device according to claim 3, characterized in that: the rotating piece (6) is extended with a first arc-shaped inclined surface (6-2), the limiting piece (8) is extended with a second arc-shaped inclined surface (8-1), and when the rotating piece (6) rotates, the first arc-shaped inclined surface (6-2) and the second arc-shaped inclined surface (8-1) are matched with each other to axially push away the limiting piece (8) so that the latch sets are mutually separated.

5. The leg beautifying device according to claim 1, wherein: the top end of the limiting piece (8) is provided with an arc-shaped force adjusting groove (8-3), the front cover (10) extends to form a safety protrusion (10-1), the first elastic piece is in a compressed state, and when the safety protrusion (10-1) is opposite to the arc-shaped force adjusting groove (8-3), the rotating piece (6) rotates to push the limiting piece (8) away so that the latch sets are separated from each other.

6. The leg beautifying device according to claim 1, wherein: still the cover is equipped with first bearing (4) and second bearing (11) on connecting axle (1), the both ends of connecting axle (1) all are provided with bearing locking piece (12), back lid (5) are connected with the outer lane of first bearing (4), protecgulum (10) are connected with the outer lane of second bearing (11).

7. The leg beautifying device according to claim 6, wherein: the bearing locking piece (12) comprises a screw (12-1) and a gasket (12-2), the screw (12-1) is fixedly connected with the end part of the connecting shaft (1) in a threaded mode, and the gasket (12-2) is located between the screw (12-1) and an inner ring of the bearing.

8. The leg beautifying device according to claim 2, wherein: the first latch (3-2) and the second latch (8-2) are sequentially arranged around the rotation direction of the limiting part (8), and one side of each of the first latch (3-2) and the second latch (8-2) is provided with a guide inclined plane (3-21), so that the limiting part (8) rotates in a single direction.

9. The leg beautifying device according to claim 8, wherein: the number of the first clamping teeth (3-2) is consistent with that of the second clamping teeth (8-2), and five force-adjusting gears (3-22) are formed between the adjacent teeth.

10. The leg beautifying device according to claim 8, wherein: and along the unidirectional rotation direction of the limiting part (8), the radial thickness of the arc bulge (3-3) is gradually increased.

11. The leg beautifying device according to claim 8, wherein: the second elastic piece (14) is arc-shaped, an arc-shaped opening (14-1) is formed in the second elastic piece (14), and the arc-shaped opening (14-1) faces to the one-way rotation direction of the limiting piece (8).

12. The leg beautifying device according to claim 2, wherein: the first elastic piece is a first pressure spring (9), and the tail end of the first pressure spring (9) is fixedly connected with a second elastic piece (14).

13. A leg beautifying device according to any one of claims 1 to 11, characterized in that: the support plate (13) is rotatably arranged, and the rotating axis is vertical to the connecting shaft (1); the supporting plate (13) is provided with a plurality of concave points (13-1), the concave points (13-1) are sequentially arranged around the rotating axis of the supporting plate (13), the left support (2) and the right support (3) are respectively provided with a second pressure spring (17) and a steel ball (16), and the steel ball (16) is clamped into the corresponding concave point (13-1).

14. A leg beautifying device according to any one of claims 1 to 11, characterized in that: a counting sensor is arranged between the left bracket (2) and the right bracket (3); and a counting display screen (18) is arranged on the right bracket (3).

15. A leg beautifying device according to claim 6 or 7, characterized in that: and the rear cover (5) and the front cover (10) are both provided with a decorative cover (19), and the decorative cover (19) is used for covering the first bearing (4) and the second bearing (11).

16. The leg beautifying device according to claim 15, wherein: the front cover (10) is provided with a mark of a training mode and a torque adjusting mode on a decorative cover (19), when the front cover (10) is rotated to indicate the training mode, the button (15) is positioned in the arc-shaped working groove (3-4), and when the front cover (10) is rotated to indicate the torque adjusting mode, the button (15) is separated from the arc-shaped working groove (3-4).