TWI722425B - Elliptical machine with the function of freely controlling the lateral movement of the pedal - Google Patents

Abstract

The present invention provides an elliptical machine with the function of freely controlling the lateral movement of the pedal, which includes: a base and a transmission mechanism sets on the base, and one end of the lateral swing track on both sides is pivoted on the base, and each lateral swing track swung laterally. On both sides of the transmission mechanism set a connecting rod and a pedaling mechanism, and the front end of each connecting rod and the pedaling mechanism is pivoted on the base; a front end is connected by a universal transmission type after the front connecting rod is connected to the connecting rod. The rear connecting rod slidably disposed on the corresponding track; the free end of the rear connecting rod is pivoted with a pedal. When the pedal is stepped, the front connecting rod is reciprocatedly telescopically fitted with the transmission mechanism, and user used the swinging angle of the laterally oscillating track can be freely manipulated by the lateral force applied to the pedal.

Description

Elliptical machine with free control pedal lateral movement stroke function

The present invention relates to an elliptical machine, in particular to an innovative structural type revealing that the lateral movement stroke of the pedal can be freely controlled according to the force exerted by the user.

Due to the busy life of modern people, they are usually exhausted when they return home, so they tend to neglect exercise. However, after the gradual rise of the leisure and health-preserving style, the concept of exercise and fitness has also gradually risen. However, finding suitable sports venues is another problem for people who want to engage in sports. The most popular school playgrounds and parks, although convenient and free, are easily affected by the weather and cannot engage in sports. In view of this, some sports equipment manufacturers have developed a variety of sports fitness equipment that are convenient for indoor use, so that users can grasp the time slot and achieve the purpose of sports fitness indoors.

Among the dazzling array of sports equipment in the market, because the trajectory of the pedal of the elliptical machine can simulate the trajectory of the feet and legs of people walking, it is more ergonomic, so it is favored by many consumers. However, the trajectories of the two pedals of the currently commercially available elliptical machines are limited to two planes parallel to each other. Therefore, the part of the exercise is fixed, and the corresponding relationship of the trajectories of the two pedals cannot be changed according to the different force application methods of the user. Causes problems and shortcomings that the scope of use and exercise parts are quite limited.

The main purpose of the present invention is to provide an elliptical machine with the function of freely controlling the lateral movement of the pedal. The technical problem to be solved is how to develop a freely controllable lateral movement of the pedal, which is more ideal and practical. The new elliptical machine structure of sex is the goal to make innovation and breakthroughs.

The technical feature of the present invention to solve the problem is mainly that the elliptical machine includes: a base, which extends in the front-to-rear direction and includes a front frame part and a rear frame part, and a front-to-back axis and a rear frame are virtualized according to the type of the base. One side axis; a column, fixed on the front frame part of the base; a transmission mechanism, installed on the front frame part of the base, the transmission mechanism includes a bracket and a flywheel that is screwed on the bracket by a rotating shaft. The two ends of the rotating shaft are respectively A crank is fixedly connected, each crank has a free end, and the free end is fixedly connected with a pivot; two lateral swinging rails are separately arranged on the rear frame of the base in a left and right spaced arrangement relationship, each The lateral swing type track includes a pivot end and a swing section. The pivot end is pivotally set at a fixed position of the rear frame. The swing section is a form that extends a length along the front and rear axis and makes the swing section appear The displaceable state is placed on the rear frame and constitutes a state in which when the swing section is controlled by an external force, the pivoting end is the pivot point and the state is freely swinging to the left and right to the arc-shaped trajectory along the direction of the lateral axis ; Two connecting rods and pedaling mechanism, each connecting rod and pedaling mechanism are installed on the transmission mechanism and its corresponding side, and the two are mutually linked; each of the connecting rods and pedaling mechanism includes: a front link, Its bottom end is pivoted to the base, and the shaft side of the front link is pivoted to the pivot of the corresponding crank; a rear link whose front end is connected to the rear end of the front link in the form of a universal transmission. The rear section of the rear link is slidably arranged on the corresponding lateral swinging track; a pedal has a screw connection part to be screwed on the rear end of the corresponding rear link, and the pedal is formed by the screw connection part The rotation fulcrum is in a state of being able to rotate under force, and the pedal set is equipped with a rotation angle restraining limit device to restrain the rotation of the pedal The limit is within a set angle range.

With the above-mentioned structure and technical features, when the user steps on each pedal, each front link is used to drive the flywheel to rotate, and the front link is coordinated with the rotation angle of the flywheel and crank to make reciprocating expansion and contraction, thereby making each pedal move It presents an elliptical trajectory, and the user can selectively use the lateral force applied to the pedal by the foot to freely control the swing sections of each lateral swing track to swing to the left and right to the arc-shaped trajectory. So as to achieve the practical progress of greatly improving the use of the elliptical machine and the exercise and fitness effect, and satisfying more diverse needs.

10: Base

11: Front frame

12: Rear frame

121: curved track

L1: front and rear axis

L2: Lateral axis

20: Column

21: Cross bar

30: Transmission mechanism

301: Bracket

31: shaft

32: flywheel

33: crank

335: free end

34: pivot

40: Lateral swing track

401: Pivot

402: Swing section

41: Sideways moving roller set

50: Connecting rod and pedaling mechanism

51: Front link

511: The first elongated member

512: second elongated member

52: rear link

521: Move the wheel group forward and backward

522: Rotating connector

523: Anti-dropping limit component

524: abutment

53: Pedal

531: Rotating part

54: Corner restraint limit device

541: front rod end

542: rear rod end

60: swing arm group

61: Lower elbow

62: Upper arm shaft

625: Handle

70: Universal joint

71: Axle

72: Universal bearing

73: Bushing

80: Friction damper

81: The friction part can be raised and lowered

82: Brake component

821: Electric Drive

822: Lasso

823: Runner

85: Magnetic damper

851: Liftable magnetic part

852: Brake component

91: The second swing section

92: The second roller set

93: The second curved track

Figure 1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is a side view of the preferred embodiment of the present invention.

Figure 3 is a schematic diagram of the motion track of the preferred embodiment of the present invention.

Figure 4 is a rear view of the preferred embodiment of the present invention.

Figure 4A is a partial enlarged view of Figure 4.

Figure 5 is a rear view of the two-sided swinging track of the present invention swaying at the same angle.

Figure 5A is a partial enlarged view of Figure 5.

Fig. 6 is a rear view of the two-sided swinging track of the present invention deflected at different angles.

Figure 6A is a partial enlarged view of Figure 6.

Figure 7 is a top view of the two-sided swinging track of the present invention yaw at different angles.

Figures 8-9 are schematic diagrams of the movements of the universal joints provided between the front link and the rear link of the present invention.

Figures 10-11 are schematic diagrams of the action of the friction damper provided in the swing section set of the present invention.

Figure 12 is a diagram of an embodiment of the present invention in which the front and rear moving roller set is provided with an anti-dropping limiting member.

Fig. 13 is an embodiment diagram of the configuration of the present invention in which the pivot end is arranged at the rear end and the swing section is arranged at the front end.

Figure 14 is an embodiment diagram of the lateral swing track of the present invention further provided with a second swing section and a second arc-shaped track in cooperation with the rear frame portion.

Figure 15 is an embodiment view of the magnetic damper provided in the swing section group of the present invention.

Please refer to Figures 1 to 5, which are the preferred embodiments of the elliptical machine with the function of freely controlling the lateral movement stroke of the pedals of the present invention. However, these embodiments are for illustrative purposes only and are not subject to this patent application. Structural restrictions.

The elliptical trainer includes the following composition: a base 10, which extends in the front-to-rear direction and includes a front frame portion 11 and a rear frame portion 12, and a forward-backward axis L1 is virtualized according to the shape of the base 10 And a lateral axis L2; a column 20 fixed on the front frame portion 11 of the base 10; a transmission mechanism 30 installed on the front frame portion 11 of the base 10, the transmission mechanism 30 includes a bracket 301 And a flywheel 32 that is screwed to the bracket 301 by a rotating shaft 31, wherein two ends of the rotating shaft 31 are respectively fixedly connected with a crank 33, each of the cranks 33 has a free end 335, and the free end 335 is fixedly connected with a crank 33 Pivot 34; two lateral swing rails 40, which are separately provided on the rear frame portion 12 of the base 10 in a left and right spaced arrangement relationship, each lateral swing rail 40 includes a pivot end 401 and a swing area Section 402, wherein the pivotal end 401 is pivoted at a fixed position of the rear frame portion 12, and the swing section 402 is in the form of extending a length along the front and rear axis L1, and the swing section 402 Is placed on the rear frame portion 12 in a displaceable state, and constitutes when the swing section When 402 is controlled by an external force, the pivoting end 401 is used as the pivot point and the state of freely swinging to the left and right to an arc-shaped trajectory along the direction of the lateral axis L2; and the two links and the pedaling mechanism 50, each The connecting rod and the pedaling mechanism 50 are installed on the transmission mechanism 30 and its corresponding side, and the two are in a mutual interlocking relationship; each of the connecting rods and the pedaling mechanism 50 includes: a front link 51, which The bottom end is pivoted to the base 10, and the shaft side of the front link 51 is pivoted to the corresponding pivot 34 of the crank 33; a rear link 52 is connected with a universal transmission at the front end At the rear end of the front link 51, the rear section of the rear link 52 is slidably disposed on the corresponding lateral swing track 40; a pedal 53 having a screw connection portion 531 for screwing Corresponding to the rear end of the rear link 52, the pedal 53 is configured to be able to rotate with the screwed portion 531 as the pivot point, and the pedal 53 group is equipped with a rotation angle restraining and limiting device 54 for use In order to restrain the rotation of the pedal 53 within a set angle range.

Preferably, the front link 51 includes a first elongated member 511 and a second elongated member 512. The first elongated member 511 and the second elongated member 512 are combined axially with each other and are capable of In the telescopic state, the bottom end of the first elongated member 511 is pivoted on the base 10; one side of the second elongated member 512 is pivoted on the corresponding pivot 34 of the crank 33 to form the crank When 33 rotates, the second elongated member 512 is driven to produce axial reciprocating motion relative to the first elongated member 511, thereby changing the length of the front link 51, and the rear link 52 is connected to the first The rear end of the two elongated members 512.

With the above-mentioned structure and technical features, as shown in Figure 3 (and please match those shown in Figures 1 and 2), when the user steps on each pedal 53, the flywheel 32 is driven to rotate through each front link 51 , And the front connecting rod 51 cooperates with the rotation angle of the flywheel 32 and the crank 33 for reciprocating expansion and contraction, so that the movement of each pedal 53 presents an elliptical trajectory, and The user can selectively use the lateral force exerted on the pedal 53 by the foot to freely control the swing section 402 of each lateral swing track 40 to swing left and right to an arc-shaped trajectory (accommodated in (Detailed later); then please refer to Figure 8 further, at this time the shaft 71 of the universal joint 70 is perpendicular to the axis of the front link 51. The biggest difference between the present invention and the current commercially available elliptical machine is that it is additionally provided with the two lateral swinging rails 40, which can swing freely to the left and right to the arc-shaped trajectory along the direction of the lateral axis L2. Please refer to this part for reference. As shown in Figures 4 and 4A, it is the state between each pedal 53 and its corresponding rear link 52 when the two laterally oscillating rails 40 have not yet deflected outward. Next, please refer to Figures 5 to 7 in order. When the user is stepping on the two pedals 53, he can selectively apply lateral pushing force to one of the pedals 53 (or both pedals) at the same time. This can drive the lateral swing track 40 to swing left and right to an arc-shaped track, so as to achieve the exercise and fitness effect of synchronously training different muscle groups of the legs. In addition, since the two laterally oscillating rails 40 disclosed in the present invention are independently pivoted on the base 10, they do not interfere with each other during operation, so that the yaw angle of the two-sided oscillating rail 40 and the pedal 53 The movement trajectory can be freely deflected according to the way the user applies force. In addition, with the implementation of the pedal 53 group equipped with the rotation angle restraining and limiting device 54, the rotation restraint of the pedal 53 can be restricted within a set angle range, so as to prevent the pedal 53 from being relative to its corresponding rear link. The offset of 52 is too large, causing safety concerns.

As shown in Figure 1, in this example, the rotation angle restraining and limiting device 54 is in the form of a rod extending along the front and rear axis L1. The rotation angle restraining and limiting device 54 has a front rod end 541 and a rod end. The rear rod end 542, the front rod end 541 is connected to the rear section of the second elongated member 512 of the front link 51 in a universal transmission type, and the rear rod end 542 is connected to the corresponding one in a universal transmission type A place at the bottom of the pedal 53 and this place is the same as the pedal 53 The screw connection parts 531 are arranged at intervals. Thus, when the swing section 402 of each lateral swing track 40 swings to the left and right to an arc-shaped trajectory, the configuration and connection relationship of the limit device 54 is restrained by the rotation angle, so that the rotation of each pedal 53 The suppression limit is within a set angle range. The first elongate member 511 is a rod shape, and the second elongate member 512 is a sleeve shape sleeved on the outer periphery of the first elongate member 511.

As shown in Figures 1 and 2, in this example, a horizontal frame rod 21 is further fixed at a height position of the column 20. The two ends of the horizontal frame rod 21 extend toward the left and right sides and are equipped with two swing arms. Group 60, each of the swing arm groups 60 includes an upper arm lever portion 62 and a lower toggle lever portion 61 in a mutual elbow connection relationship, wherein the upper arm lever portion 62 is provided with a grip 625 adjacent to the upper end, and the upper arm lever portion 62 The shaft is pivoted at one end of the corresponding cross frame rod 21, and the front end of the lower toggle part 61 is pivoted to the corresponding pivot 34 of the crank 33.

As shown in Figures 1, 4, 5, and 6, in this example, the rear frame portion 12 of the base 10 is provided with an arc-shaped rail 121, and the bottom side of the swing section 402 of each lateral swing type rail 40 is provided with a The laterally moving roller set 41 (note: not limited to the single-wheel or double-wheel type), each of the laterally moving roller sets 41 is tied to the arc-shaped track 121 for rolling displacement.

As shown in Figure 4A, in this example, the rear section of each rear link 52 is equipped with a forward and backward moving roller set 521 (note: not limited to single-wheel or double-wheel type), the forward and backward moving roller set 521 is a rolling displacement on the corresponding lateral swinging track 40, and a rotating connecting member 522 is installed between the forward and backward moving roller set 521 and the rear section of the rear link 52 to make the forward and backward moving rollers When the group 521 rolls on the lateral swing track 40, it can coordinate with the lateral swing of the rear link 52 to generate a deflection synchronously.

As shown in Figures 8 and 9, in this example, the front end of the rear link 52 is connected to the rear end of the front link 51 by a universal joint 70; the universal joint 70 includes There is a shaft 71 passing through the front end of the rear connecting rod 52, a universal bearing 72 set on the shaft 71, and a shaft sleeve 73 screwed on the outer wall of the universal bearing 72. The shaft sleeve 73 is secured Set at the rear end of the front link 51. One point that needs to be added to the disclosure of this example is that the other components of the present invention are connected in the form of universal transmission, and the specific structural details and implementation types can refer to this example and be specified.

As shown in Figures 10 and 11, the swing section 402 is further provided with a friction damper 80. The friction damper 80 includes a liftable friction portion 81 and a device for controlling the lifting state of the liftable friction portion 81 A brake member 82, and when the liftable friction portion 81 is in a descending state, it is pressed downward against the corresponding arc-shaped rail 121 to generate friction, so that the rolling displacement of the laterally moving roller set 41 has Resistance; and the braking member 82 adopts either electric or manual control type. For example, the braking member 82 disclosed in this example is an electric control type, which mainly includes an electric driver 821, a cable 822, and A runner 823, wherein the rear end of the cable 822 bypasses the runner 823 and is connected to one of the liftable friction parts 81. The electric driver 821 can control the cable 822 and then link the lift friction part 81 to produce This is only a preferred embodiment and is not limited to this. The advantage of providing the friction damper 80 in this example is mainly to control the displacement of the swing section 402 relative to the arc-shaped track 121 The frictional force at the time, so as to provide users with more choices in the process of operating the elliptical machine.

As shown in Figure 12, in this example, the forward and backward moving roller set 521 is further provided with an anti-dropping limiting member 523, and the anti-dropping limiting member 523 has at least one abutting frame portion 524 for leaning against the The side portion of the laterally oscillating track 40 prevents the forward and backward moving roller set 521 from escaping from the laterally oscillating track 40 in a lateral path.

As shown in Figures 1 to 7, in this example, the pivotal end 401 and the pivotal section 402 of each laterally swinging rail 40 are arranged in such a way that the pivotal end 401 is in the front. The oscillating section 402 is a relatively rear configuration type. In addition, as shown in FIG. 13, the configuration of the pivotal end 401 and the swing section 402 is a configuration where the pivotal end 401 is at the back and the swing section 402 is relatively at the front.

As shown in Fig. 14, in this example, the pivotal end 401 of each lateral swinging rail 40 further extends at an end away from the swinging section 402 to form a second swinging section 91, and the second swinging A second roller set 92 is provided at the bottom of the section 91 so that the rear frame portion 12 of the base 10 is matched with a second arc-shaped track 93 for the second roller set 92 to roll and displace thereon.

As shown in Figure 15, in this example, the swing section 402 is further provided with a magnetic damper 85. The magnetic damper 85 includes a liftable magnetic part 851 and used to control the liftable magnetic damper. One of the braking members 852 in the lifting state of the portion 851, the arc track 121 is made of magnetically conductive material, and when the liftable magnetic attraction portion 851 is in the descending state, a magnetic force is generated with the corresponding arc track 121 (as shown in the figure) The hollow arrow indicates the difference change, so that the rolling displacement of the laterally moving roller set 41 has a resistance adjustment function; and the braking member 852 adopts either an electric or a manual control type.

10: Base

11: Front frame

12: Rear frame

121: curved track

L1: front and rear axis

L2: Lateral axis

20: Column

21: Cross bar

30: Transmission mechanism

301: Bracket

31: shaft

32: flywheel

33: crank

335: free end

34: pivot

40: Lateral swing track

401: Pivot

402: Swing section

41: Sideways moving roller set

50: Connecting rod and pedaling mechanism

51: Front link

511: The first elongated member

512: second elongated member

52: rear link

521: Move the wheel group forward and backward

53: Pedal

531: Rotating part

54: Corner restraint limit device

541: front rod end

542: rear rod end

62: Upper arm shaft

61: Lower elbow

625: Handle

Claims (12)

An elliptical machine with the function of freely controlling the lateral movement stroke of the pedal. The elliptical machine includes: a base, which is in a forward and backward extension form and includes a front frame part and a rear frame part, and is virtualized according to the shape of the base A front and rear axis and a side axis; a column fixed on the front frame portion of the base; a transmission mechanism installed on the front frame portion of the base, the transmission mechanism includes a bracket and uses a rotating shaft to rotate A flywheel installed on the bracket, wherein the two ends of the rotating shaft are respectively fixedly connected with a crank, each of the cranks has a free end, and the free end is fixedly connected with a pivot; The rear frame portion of the base is in a left and right spaced arrangement relationship, each laterally swinging track includes a pivot end and a swing section, wherein the pivot end is pivotally set at a fixed position of the rear frame portion, The swing section is in a form that extends a length along the front and rear axis, and the swing section is placed on the rear frame in a displaceable state, and constitutes when the swing section is controlled by an external force, It is a state where the pivoting end is the pivot point and the left and right side arc trajectories are freely swinging along the direction of the lateral axis; and the two connecting rods and the pedaling mechanism, each of the connecting rods and the pedaling mechanism is installed at The transmission mechanism and its corresponding side, and make the two interlocking relations with each other; each of the connecting rods and the pedaling mechanism includes: a front link, the bottom end of which is pivoted on the base, and the rod of the front link One side of the body is pivoted to the corresponding pivot of the crank; a rear link, the front end of which is connected to the front link in the form of universal transmission At the rear end, the rear section of the rear section link is slidably arranged on the corresponding lateral swinging track; and a pedal, the pedal has a screw connection part for rotating on the rear section of the corresponding rear section link The end constitutes that the pedal is able to rotate under force with the rotating fulcrum as the rotating fulcrum, and the pedal set is equipped with a rotation angle restraining limit device to limit the rotation restraint of the pedal within a set angle range; Furthermore, the front link system includes a first elongated member and a second elongated member, the first elongated member and the second elongated member are combined axially with each other and are in a telescopic state, the first The bottom end of the elongated member is pivoted on the base; one side of the second elongated member is pivoted on the corresponding pivot of the crank, so that when the crank rotates, the second elongated member is driven The member generates axial reciprocating motion relative to the first elongated member, thereby changing the length of the front link, and the rear link is connected to the rear end of the second elongated member; thereby, when the user steps on each When the pedal is used, the flywheel is driven to rotate through each of the front link rods, and the front link rod is reciprocating and retractable in accordance with the rotation angle of the flywheel and the crank, so that the motion of each pedal presents an elliptical trajectory, and the user The lateral force applied by the foot to the pedal can be selectively used to freely control the swing sections of the lateral swing track to swing left and right to the arc-shaped track. The elliptical machine with the function of freely controlling the lateral movement stroke of the pedal as described in claim 1, wherein the rotation angle restraining and limiting device is in the form of a rod extending along the front and rear axis, and the rotation angle restraining and limiting device has A front rod end and a rear rod end, the front rod end is connected to the rear section of the second elongated member of the front link in a universal transmission type, and the rear rod end is connected to the corresponding one in a universal transmission type A place at the bottom of the pedal, and that place and the pedal The screw joints are arranged at intervals. The elliptical machine with the function of freely controlling the lateral movement stroke of the pedal as described in claim 2, wherein the first elongated member is in the form of a rod, and the second elongated member is sleeved on the first A sleeve type on the outer circumference of the elongated member. The elliptical machine with the function of freely controlling the lateral movement stroke of the pedal as described in claim 3, wherein the rear frame of the base is provided with an arc-shaped track, and the bottom side of the swing section of each side-swinging track is equipped with a The laterally movable roller sets are each tied to the arc-shaped track for rolling displacement. The elliptical machine with the function of freely controlling the lateral movement stroke of the pedal as described in claim 4, wherein the rear section of each rear link is equipped with a forward and backward moving roller set, and the forward and backward moving roller set is connected to the corresponding The laterally oscillating track has a rolling displacement, and a rotating connecting piece is installed between the forward and backward moving roller set and the rear section of the rear link to make the forward and backward moving roller set roll on the laterally oscillating track At the same time, the deflection can be generated synchronously with the lateral swing of the rear link. The elliptical machine with the function of freely controlling the lateral movement stroke of the pedal as described in claim 5, wherein the forward and backward moving roller set is further provided with an anti-falling limit member, and the anti-falling limit member is provided with at least one abutting frame The part is used for leaning against the side part of the lateral swinging track, so as to prevent the forward and backward moving roller set from escaping from the lateral swinging track in a lateral path. The elliptical machine with the function of freely controlling the lateral movement stroke of the pedal as described in claim 6, The arrangement of the pivotal end and the swinging section of each of the lateral swinging rails is the arrangement of the pivotal end at the front and the swinging section at the rear. The elliptical machine with the function of freely controlling the lateral movement stroke of the pedal as described in claim 7, wherein the pivotal end of each lateral swinging track is further extended at an end away from the swinging section to form a second swinging section And the bottom of the second swing section is provided with a second roller set, so that the rear frame of the base is matched with a second arc-shaped track for the second roller set to roll and move on it. The elliptical machine with the function of freely controlling the lateral movement stroke of the pedal as described in claim 6, wherein the configuration of both the pivot end and the swing section of each lateral swing track is that the pivot end is at the rear The swing section is relatively in front of the configuration. The elliptical machine with the function of freely controlling the lateral movement stroke of the pedal as described in claim 1, wherein the front end of the rear link is connected to the rear end of the front link by a universal joint; the universal joint includes a through A shaft at the front end of the rear link, a universal bearing set on the shaft, and a shaft sleeve screwed on the outer wall of the universal bearing, and the shaft sleeve is fixed on the rear end of the front link. The elliptical machine with the function of freely controlling the lateral movement stroke of the pedal as described in claim 1, wherein the oscillating section is further provided with a friction type damper, and the friction type damper includes a lifting friction part and for controlling the The lifting friction part is one of the braking members in the lifting state, and when the lifting friction part is in the descending state, it is pressed down against the corresponding arc-shaped track to generate friction, thereby causing the laterally moving roller set to roll Displacement has resistance ; And the brake component system adopts either electric or manual control mode. The elliptical machine with the function of freely controlling the lateral movement stroke of the pedal as described in claim 1, wherein the swing section is further provided with a magnetic damper, and the magnetic damper includes a liftable magnetic A braking member that controls the lifting state of the liftable magnetic part, and the arc-shaped track is made of magnetic conductive material. When the liftable magnetic part is in a descending state, it is different from the magnetic force generated by the corresponding arc-shaped track Change, so that the rolling displacement of the laterally moving roller set has a resistance adjustment function; and the braking member adopts either electric or manual control mode.

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