CN107126667B

CN107126667B - Stepping exercise body-building device

Info

Publication number: CN107126667B
Application number: CN201710232720.4A
Authority: CN
Inventors: 魏茂昌; 李同森
Original assignee: SHANDONG RELAX HEALTH INDUSTRY CO LTD
Current assignee: SHANDONG RELAX HEALTH INDUSTRY CO LTD
Priority date: 2017-04-11
Filing date: 2017-04-11
Publication date: 2023-06-06
Anticipated expiration: 2037-04-11
Also published as: CN107126667A

Abstract

The invention discloses a stepping exercise body-building device, which comprises a frame, a synchronous assembly and two pedal assemblies, wherein each pedal assembly comprises a pedal, a supporting rod, a rear swing arm, a front swing arm and a crank-slider mechanism, each crank-slider mechanism comprises a crank, a connecting rod and a sliding piece, the sliding piece is arranged on the frame in a sliding way, the pedal is arranged at the rear end part of the supporting rod, the lower end part of the rear swing arm is hinged at the middle part of the supporting rod, the lower end part of the front swing arm is hinged at the front end part of the supporting rod, and the upper end part of the front swing arm is hinged on the sliding piece; the machine frame is provided with a rotatable main shaft, and two cranks are fixed at the corresponding end parts of the main shaft; the synchronous assembly comprises a synchronous shaft and two synchronous wheels with opposite rotation directions, the synchronous shaft is rotatably arranged on the frame, the two synchronous wheels are respectively connected with the synchronous shaft in a transmission manner, the synchronous wheels are arranged at the upper end parts of the corresponding rear swing arms, and the upper end parts of the rear swing arms and the corresponding synchronous wheels are coaxially arranged and rotatably arranged on the frame. Improving the experience of the sporter.

Description

Stepping exercise body-building device

Technical Field

The invention relates to fitness equipment, in particular to a stepping exercise fitness equipment.

Background

At present, along with the improvement of the living standard of people, people pay more and more attention to the health of the people, various body-building equipment is developed and marketed, common body-building equipment on the market comprises elliptical machines, mountain climbing machines and the like, and Chinese patent numbers: 201080026684.2 discloses an exercise equipment with flexible component, and this exercise equipment can realize foot reciprocating and back-and-forth movement, and the technical scheme of above-mentioned patent disclosure, the pedal is linked each other through corresponding connecting rope about, and horizontal connecting rope realizes pedal reciprocating, and vertical connecting rope realizes pedal reciprocating, finally reaches the person of exercising can also reciprocate in the back-and-forth movement. However, due to the limitation of the length of the connecting rope, the amplitude of the front-back swing of the pedal is small, meanwhile, the height position of the pedal influences the change of the force arm, and in the movement process, the force required to be applied by the pedals at different positions is different, so that the experience of a sporter is poor. How to design a gymnastic device with better experience for a sporter is the technical problem to be solved by the invention.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: provides a stepping exercise body-building device, which improves the experience of the exerciser of the stepping exercise body-building device.

The technical scheme provided by the invention is that the stepping exercise body-building device is characterized by comprising a frame, a synchronous component and two pedal components, wherein the two pedal components are arranged left and right and are arranged on the frame;

the pedal assembly comprises a pedal, a support rod, a rear swing arm, a front swing arm and a crank slider mechanism, wherein the crank slider mechanism comprises a crank, a connecting rod and a sliding piece which are sequentially hinged together, the sliding piece is arranged on the frame in a sliding mode, the pedal is installed at the rear end portion of the support rod, the lower end portion of the rear swing arm is hinged to the middle portion of the support rod, the lower end portion of the front swing arm is hinged to the front end portion of the support rod, and the upper end portion of the front swing arm is hinged to the sliding piece; the machine frame is provided with a rotatable main shaft, and two cranks are fixed at the corresponding end parts of the main shaft;

the synchronous assembly comprises a synchronous shaft and two synchronous wheels with opposite rotation directions, the synchronous shaft is rotatably arranged on the frame, the two synchronous wheels are respectively connected with the synchronous shaft in a transmission mode, the synchronous wheels are arranged at the upper end parts of the corresponding rear swing arms, and the upper end parts of the rear swing arms and the corresponding synchronous wheels are coaxially arranged and rotatably arranged on the frame.

Further, a sliding rail which is arranged corresponding to the pedal assembly is arranged on the support, and the sliding piece is arranged on the sliding rail in a sliding manner.

Further, one end of the sliding rail is hinged to the frame, and the other end of the sliding rail is provided with a driving mechanism for driving the sliding rail to rotate.

Further, an elastic telescopic piece is arranged between the sliding rail and the frame.

Further, the sliding piece is a sliding sleeve, and the sliding sleeve is sleeved on the sliding rail; or the sliding piece comprises a mounting frame and three guide wheels rotatably mounted on the mounting frame, the connecting rod is hinged on the mounting frame, a sliding channel is formed between one guide wheel and the other two guide wheels, and the sliding rail is inserted in the sliding channel.

Further, driving wheels are respectively arranged at two ends of the synchronous shaft, a first synchronous belt is arranged between one driving wheel and the synchronous wheel at the corresponding side, and a second synchronous belt is arranged between the other driving wheel and the synchronous wheel at the corresponding side; the first synchronous belt is wound between the corresponding driving wheel and the corresponding synchronous wheel in the same winding direction, and the second synchronous belt is wound between the corresponding driving wheel and the corresponding synchronous wheel in the opposite winding direction.

Further, the first synchronous belt and the second synchronous belt are respectively fixed on the corresponding synchronous wheels, the outer circumferences of the driving wheels are all of gear structures, and the first synchronous belt and the second synchronous belt are all of rack belts.

Further, the synchronous wheel is provided with a synchronous adjusting assembly, the synchronous adjusting assembly comprises an adjusting bracket, two positioning blocks and two adjusting bolts, the two positioning blocks are arranged back to each other and are respectively and slidably arranged on the adjusting bracket, the positioning blocks are provided with slots for positioning the tooth strips, tooth structures are formed in the slots, and the adjusting bolts are in threaded connection with the corresponding end parts of the adjusting bracket and abut against the positioning blocks.

Further, the front portion of pedal is provided with the shaft hole, the rear portion of pedal is provided with the shock attenuation hole, be provided with the shock attenuation cover in the shock attenuation hole, the rear end portion of bracing piece is provided with first installation axle and second installation axle, first installation axle sets up in the shaft hole, the second installation axle sets up in the shock attenuation cover.

Further, after the crank in one crank sliding mechanism and the axis of the corresponding connecting rod are positioned on the same straight line, the crank in the other crank sliding mechanism and the axis of the corresponding connecting rod are staggered.

Compared with the prior art, the invention has the advantages and positive effects that: according to the stepping exercise body-building device, the pedals are installed through the front swing arm and the rear swing arm, so that the left pedal and the right pedal have a large enough stroke range in the front-back up-down movement process, the swing amplitude of the pedals is effectively increased to meet the maximum requirement of exercise amount of an exerciser, meanwhile, the front swing arm is connected to the sliding piece of the crank slider mechanism to realize up-down movement of the pedals, the up-down movement of the pedals is converted into rotation of the crank in the crank slider mechanism, the whole exercise process is smooth, the mechanism for guiding the left pedal and the right pedal and the up-down movement is realized in a connecting rod hinging mode, the force arm changes generated by the pedals at different positions are small, the exerciser can apply balanced force to the pedals at different positions to drive the pedals, and the use experience of the exerciser is effectively improved. Meanwhile, the swing arm and the crank block mechanism are adopted to install the pedal, so that the connection reliability and the use reliability of the whole structure are greatly improved, the whole stepping exercise body-building device runs more softly and smoothly, and better body-building experience is provided for a sporter.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a front view of an embodiment of the stepping exercise machine of the present invention

FIG. 2 is a perspective view of an embodiment of the stepping exercise machine of the present invention;

FIG. 3 is an assembled view of the slider and the track in the stepping exercise apparatus according to the embodiment of the present invention;

FIG. 4 is an exploded view of the synchronization assembly of an embodiment of the stepping exercise apparatus of the present invention;

FIG. 5 is an assembly view of a toothed belt and a synchronous adjustment assembly of an embodiment of the stepping exercise machine of the present invention;

FIG. 6 is a reference diagram of the use of the foot pedal in an embodiment of the stepping exercise apparatus of the present invention;

FIG. 7 is a second reference diagram of the use of the foot pedal in an embodiment of the stepping exercise apparatus of the present invention;

FIG. 8 is a third reference diagram of the use of the foot pedal in an embodiment of the stepping exercise apparatus of the present invention;

FIG. 9 is an assembled view of a pedal and support bar in an embodiment of the stepping exercise apparatus of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 5, the stepping exercise body-building device of the embodiment comprises a frame 1, a synchronizing assembly 2 and two pedal assemblies 3, wherein the two pedal assemblies 3 are arranged left and right and are installed on the frame 1;

the pedal assembly 3 comprises a pedal 31, a support rod 32, a rear swing arm 33, a front swing arm 34 and a crank slider mechanism 35, wherein the crank slider mechanism 35 comprises a crank 351, a connecting rod 352 and a sliding part 353 which are hinged together in sequence, the sliding part 353 is arranged on the frame 1 in a sliding way, the pedal 31 is installed at the rear end part of the support rod 32, the lower end part of the rear swing arm 33 is hinged to the middle part of the support rod 32, the lower end part of the front swing arm 34 is hinged to the front end part of the support rod 32, and the upper end part of the front swing arm 34 is hinged to the sliding part 353; a rotatable main shaft 11 is arranged on the frame 1, and two cranks 351 are fixed at corresponding ends of the main shaft 11;

the synchronous assembly 2 comprises a synchronous shaft 21 and two synchronous wheels 22 with opposite rotation directions, the synchronous shaft 21 is rotatably installed on the frame 1, the two synchronous wheels 22 are respectively in transmission connection with the synchronous shaft 21, the synchronous wheels 22 are arranged at the upper end parts of the corresponding rear swing arms 33, and the upper end parts of the rear swing arms 33 and the corresponding synchronous wheels 22 are coaxially arranged and rotatably installed on the frame 1.

Specifically, the support rod 32 for installing the pedal 31 in the stepping exercise apparatus of the present embodiment is lifted by the rear swing arm 33 and the front swing arm 34, wherein, in the actual use process, the lengths of the rear swing arm 33 and the front swing arm 34 are not changed, so that each pedal 31 can obtain a large enough movement space, and meanwhile, the situation that the force variation of the stepping process of the exerciser is overlarge due to the length variation of the force arm of the pedal 31 can be reduced. More importantly, the upper end part of the front swing arm 34 is hinged on the sliding part 353 of the crank block mechanism 35, the up-and-down motion of the pedal 31 is limited by the crank block mechanism 35, the sliding part 353 can effectively guide the motion track of the front swing arm 34, the up-and-down motion and the front-and-back motion of the pedal 31 are not affected, and the stepping exercise machine is ensured to run smoothly and softly. In addition, pedal assemblies 3 arranged left and right on the frame 1 ensure running synchronization through the synchronization assemblies 2, so that pedals 31 on one side ascend and pedals 31 on the other side synchronously move downwards, and meanwhile, two ends of the main shaft 11 are connected with corresponding cranks 351, so that the synchronous effect can be further achieved, and the stepping motion is ensured to be softer and smoother.

The support 1 is provided with a sliding rail 13 corresponding to the pedal assembly 3, the sliding member 353 is slidably disposed on the sliding rail 13, and the sliding member 353 is guided by the sliding rail 13, so as to ensure that the sliding member 353 can slide smoothly along the sliding rail 13; preferably, one end of the sliding rail 13 is hinged on the frame 1, and the other end of the sliding rail 13 is provided with a driving mechanism (not shown) for driving the sliding rail 13 to rotate, specifically, the sliding rail 13 is driven by the driving mechanism to rotate so as to change the sliding track of the sliding member 353, thereby adjusting the sliding height of the sliding member 353, and achieving the effect of indirectly adjusting the up-and-down movement amplitude of the pedal 31, so as to realize different leg lifting heights of the sporter, and meet the body-building requirements of different sporters. While there are various ways in which the slider 353 can slide on the slide rail 13, for example: the sliding member 353 may be a sliding sleeve, and the connecting rod 352 is hinged on the sliding sleeve, and the sliding sleeve is sleeved on the sliding rail 13; preferably, in order to improve sliding smoothness, the sliding member 353 includes a mounting frame 3531 and three guide wheels rotatably mounted on the mounting frame 3531, the mounting frame 3531 may be formed of two opposite mounting plates, and the mounting frame 3531 is hinged to the link 352, wherein a sliding channel is formed between one guide wheel and the other two guide wheels, and the sliding rail 13 is inserted in the sliding channel. Specifically, three guide wheels are installed between the two installation plates, and the sliding member 353 slides with respect to the slide rail 13 by the guide wheels rolling on the slide rail 13. In order to avoid collision noise caused by the movement gap between the sliding member 353 and the sliding rail 13, the outer circumferential surface of the guide wheel is provided with an elastic layer, for example: parts with elastic buffering function such as a rubber layer can be wrapped outside the guide wheels, after the guide wheels are arranged on the sliding rail 13, the sliding rail 13 is clamped between the three guide wheels, and the elastic layer is stressed to deform, so that the guide wheels can be ensured to be tightly clamped on the sliding rail 13 all the time. Or, the guiding wheel is divided into an adjustable guiding wheel 3532 and two positioning guiding wheels 3533, the two positioning guiding wheels 3533 are located at one side of the sliding rail 13, the adjustable guiding wheel 3532 is located at the other side of the sliding rail 13, a bar-shaped hole 35311 is formed in the mounting frame 3531, the positioning guiding wheels 3533 are rotatably mounted on the mounting frame 3531, a rotating shaft 35321 of the adjustable guiding wheel 3532 is disposed in the bar-shaped hole 35311, and an elastic piece 36 for applying elastic force to a rotating shaft 35321 of the adjustable guiding wheel 3532 to enable the adjustable guiding wheel to be clung to the sliding rail 13 is further disposed on the mounting frame 3531. Specifically, the elastic member 36 applies an elastic force to the rotating shaft 35321 of the adjustable guide wheel 3532, so as to ensure that the adjustable guide wheel 3532 is tightly abutted against the sliding rail 13 all the time, so as to avoid occurrence of movement clearance. The mounting frame 3531 is further provided with a flange structure 35312, the elastic member 36 is disposed between the flange structure 35312 and the rotating shaft 35321 of the adjustable guide wheel 3532, and the elastic member 36 may be a compression spring compressed between the flange structure 35312 and the rotating shaft 35321 of the adjustable guide wheel 3532; or, the elastic member 36 is an elastic ball, a positioning groove (not labeled) is provided at an end of the rotating shaft 35321 of the adjustable guide wheel 3532, the elastic ball is located in the positioning groove, a tensioning bolt 37 is connected to the flanging structure 35312 in a threaded manner, and the tensioning bolt 37 abuts against the elastic ball, so that the elastic ball is pressed between the rotating shaft 35321 and the tensioning bolt 37, and the elastic ball is ensured to exert elastic force on the rotating shaft 35312. Meanwhile, an elastic telescopic member (not shown) may be further provided between the frame 1 and the slide rail 13. Specifically, because the pedal 31 moves up and down, the sliding rail 13 is also affected by the reciprocating force, the elastic telescopic member can ensure that the sliding rail 13 is always in a state of balanced force, and well relieves the gap formed between the sliding rail 13 and the frame 1 and between other connecting members, so as to ensure that the impact noise caused by the mechanical connection gap can not occur in the process of using the fitness equipment, and the elastic telescopic member and the driving mechanism are positioned on the same side of the sliding rail 13, and the elastic telescopic member is used for applying a tensile force to the sliding rail 13, for example: the elastic telescopic piece can adopt a tension spring; alternatively, the elastic telescopic member and the driving mechanism are located at two sides of the sliding rail 13, and the elastic telescopic member is used for applying a pushing force to the sliding rail 13, for example: the elastic expansion piece can adopt a pressure spring or a gas spring.

In addition, in order to obtain damping during exercise, the stepping exercise apparatus of the present embodiment further includes a first damper 101 and a second damper 102, the main shaft 11 is connected to the first damper 101, the synchronization shaft 21 is connected to the second damper 102, during exercise of the exerciser, the forward and backward movement of the pedal 31 drives the second damper 102 to operate through the synchronization shaft 21, and the up and down movement of the pedal 31 drives the first damper 101 to operate through the main shaft 11, and the first damper 101 and the second damper 102 may take the form of dampers commonly used in exercise apparatuses in the prior art, for example: friction dampers, electromagnetic dampers, and the like; meanwhile, according to design requirements, the main shaft 11 and/or the synchronizing shaft 21 is further connected with an inertia wheel 10, wherein, taking the main shaft 11 connected with the inertia wheel 10 as an example, the inertia wheel 10 can be directly connected with the main shaft 11 or can be connected with the main shaft 11 in an indirect connection mode. Preferably, the upper end of the rear swing arm 33 is further provided with a handle 331 for the convenience of the user's hand.

The specific use process of the stepping exercise body-building device of the embodiment is as follows:

1. in the implementation process of the up-and-down motion of the stepping motion of the sporter, the foot of the sporter applies downward thrust on the pedal 31, the force is transmitted to the front swing arm 34 through the supporting rod 32, the front swing arm 34 transmits upward thrust to the sliding part 353 through the rotating shaft of the front swing arm, the sliding part 353 transmits the upward thrust to the connecting rod 352, the connecting rod 352 transmits upward tensile force to the crank 351, the other end of the crank 351 is in tight fit connection with the main shaft 11, and the main shaft 11 directly or indirectly drives the first damper 101 to operate; because one end of the crank 351 is fixed on the main shaft 11, one end is pulled upwards by the connecting rod 352, the crank 351 rotates clockwise around the main shaft 11, and because two cranks 351 are connected at two ends of the main shaft 11 in a tight fit manner, one end of the crank 351 of the main shaft 11 rotates to drive the other end of the crank 351 to rotate symmetrically, so that the pedal assembly 3 at the other side of the frame 1 moves symmetrically, the other side foot of a sporter lifts, and the up-and-down motion of stepping motion is realized. In addition, due to the inertia design of the superposition combination of the inertia of the first damper 101 and the inertia wheel 10, the stepping motion of the sporter is enabled to be free from stop, and the stepping motion is enabled to be softer and smoother.

2. The front swing arm 34 is hung on the sliding part 353 to do front-back swing arm movement, the support rod 32 is connected to the rear swing arm 33 and the front swing arm 34 to form a connecting rod structure similar to a parallelogram, and the support rod 32 is connected to the pedal 12 to do front-back movement. The other side of the frame 1 is symmetrically designed with the same structure, and the pedals 31 on the left side and the right side can realize reverse synchronous movement under the action of the synchronous component 2, thereby realizing the movement of stepping before and after the stepping movement of the sporter. In addition, by utilizing the inertia of the second damper 102, the forward and backward motion of the stepping motion of the sporter is kept without stopping, and the stepping motion is softer and smoother.

From the above, the pedal assembly 3 is a four-bar linkage mechanism except the crank block mechanism 35, the supporting rod 32, the rear swing arm 33 and the front swing arm 34 also form the four-bar linkage mechanism, and the pedal 31 can be ensured to move up and down and back and forth simultaneously by using two sets of four-bar linkage mechanisms, and the large-amplitude movement and the stress balance of the pedal 31 can be ensured, so that the experience of a sporter is effectively improved.

Furthermore, in the synchronization assembly 2 of this embodiment, the connection manner between the synchronization shaft 21 and the synchronization wheel 22 may be a conventional synchronization structure in the existing fitness equipment, preferably, two ends of the synchronization shaft 21 are respectively provided with a driving wheel 23 and a driving wheel 24, a first synchronous belt 25 is disposed between the driving wheel 23 and the synchronization wheel 22 on the corresponding side, and a second synchronous belt 26 is disposed between the other driving wheel 24 and the synchronization wheel 22 on the corresponding side; the first timing belt 25 is wound between the corresponding driving wheel 23 and the timing wheel 33 in the same winding direction, and the second timing belt 26 is wound between the corresponding driving wheel 24 and the timing wheel 22 in the opposite winding direction. Specifically, since the movement directions of the pedals 31 on the left and right sides are opposite, the first synchronous belt 25 is wound on the corresponding driving wheel 23 and the corresponding synchronous wheel 33 in the same winding direction, so that the driving wheel 23 and the corresponding synchronous wheel 33 rotate in the same direction, and the second synchronous belt 26 is wound on the corresponding driving wheel 24 and the corresponding synchronous wheel 33 in the opposite winding direction, so that the driving wheel 24 and the corresponding synchronous wheel 33 rotate in opposite directions, thereby meeting the requirement of synchronous but reverse movement of the pedals 31 on the left and right sides. In order to improve the synchronization consistency, the outer circumferences of the synchronizing wheel 33, the driving wheel 23 and the driving wheel 24 are all of gear structures, and the first synchronous belt 25 and the second synchronous belt 26 are all of rack belts; alternatively, the first timing belt 25 and the second timing belt 26 may be fixed to the corresponding timing wheel 33, respectively, so that only the outer circumferences of the driving wheel 23 and the driving wheel 24 need be provided in a gear structure. Preferably, the synchronizing wheel is provided with a synchronizing adjusting assembly 27, the synchronizing adjusting assembly 27 includes an adjusting bracket 271, two positioning blocks 272 and two adjusting bolts 273, the two positioning blocks 272 are arranged back to back and are respectively slidably arranged on the adjusting bracket 271, the positioning blocks 272 are provided with slots 270 for positioning the rack belt, the slots 270 are provided with tooth structures, and the adjusting bolts 273 are in threaded connection with corresponding ends of the adjusting bracket 271 and are abutted against the positioning blocks 272. Specifically, in the assembly process, two end portions of the toothed belt can be correspondingly connected and fixed through two positioning blocks 272, taking the first synchronous belt 25 as an example, two end portions of the first synchronous belt 25 are correspondingly inserted into the slots 270 from the side surfaces of the positioning blocks 272, teeth of the first synchronous belt 25 are meshed with tooth structures in the slots 270, so that the first synchronous belt 25 can be prevented from being separated from the slots 270, the positioning blocks 272 can slide on the adjusting support 271, and by rotating two adjusting bolts 272 simultaneously, the adjusting bolts 272 abut against the positioning blocks 272 to drive the positioning blocks 272 to move on the adjusting support 271 so as to change the positions of the positioning blocks 272, and accordingly, the relative positions of two pedals 31 can be adjusted according to requirements. The adjusting support 271 is of a pipeline structure, the positioning blocks 272 are slidably arranged in the pipeline structure, sockets (not marked) are respectively formed in two ends of the adjusting support 271, detachable baffles 274 are arranged in the sockets, threaded holes (not marked) are formed in the baffles 274, the two positioning blocks 272 are located between the two baffles 274, the adjusting bolts 273 are in threaded connection with the threaded holes, the pipeline structure is adopted to adjust the opening of the slot 270 of the positioning blocks 272, the opening of the slot 270 can be effectively limited, the situation that the opening is overlarge due to deformation caused by tensile force of the rack belt in the slot 270 is avoided, the positioning blocks 272 are placed in a pipeline formed by the adjusting support 271, on one hand, the opening of the slot 270 is prevented from being overlarge, on the other hand, the positioning blocks 272 slide in the pipeline and can be adjusted by a sporter conveniently, and the using reliability and convenience are improved. The positioning block 272 is further provided with a positioning blind hole 2721, and an end of the adjusting bolt 273 is inserted into the corresponding positioning blind hole 2721, and the end of the adjusting bolt 273 is positioned through the positioning blind hole 2721. In addition, in order to limit the swing amplitude of the pedal 31, the synchronizing shaft 21 is further provided with a limiting plate 28, the frame 1 is further provided with a limiting wheel 12 matched with the limiting plate 28, the edge of the limiting plate 28 is provided with an arc guiding portion 281 and two upturned limiting portions 282, the arc guiding portion 281 is located between the two limiting portions 282, when the pedal 31 moves in a normal range, the arc guiding portion 281 is in contact with the limiting wheel 12, and when the pedal 31 gradually moves to a limiting position, the upturned limiting portion 282 is in contact with the limiting wheel 12, and finally the maximum stroke position of the pedal 31 is limited by the cooperation of the upturned limiting portion 282 and the limiting wheel 12.

Further, in order to obtain the maximum exercise requirement to meet the needs of different exercise users, as shown in fig. 6-8, the upper surface of the pedal 31 is a cambered surface structure 310. Specifically, the upper surface of the pedal 31 adopts the arc surface structure 310, so that in the practical use process, the position of the athlete standing on the pedal 31 is different, and in the body building process, the swing angle of the foot joint is different, thereby obtaining the requirements of different exercise amounts, and the upper surface of the pedal 31 can be in a convex arc surface structure or a concave arc surface structure. Referring to fig. 8 to 9, it can be seen that the foot of the athlete adopts three different positions of the pedal 31 and A, B, C, and the angles formed between the lower leg and the instep of the athlete are different, so that different amounts of exercise can be obtained. Preferably, in order to improve the comfort of the user, as shown in fig. 9, the front portion of the pedal 31 is provided with a shaft hole (not marked), the rear portion of the pedal is provided with a shock absorbing hole (not marked), a shock absorbing sleeve 311 is disposed in the shock absorbing hole, the rear end portion of the support rod 32 is provided with a first mounting shaft 321 and a second mounting shaft 322, the first mounting shaft 321 is disposed in the shaft hole, and the second mounting shaft 322 is disposed in the shock absorbing sleeve 311. Specifically, the pedal 31 can rotate by a certain amplitude through the first mounting shaft 321, and the rear part of the pedal 31 obtains a good damping effect through the damping sleeve 311, so that when the pedal 31 is impacted by a sporter with overlarge movement amplitude, the impact force of the pedal 31 can be effectively reduced by using the damping sleeve 311 to protect the foot of the sporter. In order to adjust the force of the damping, a plurality of damping rings 3111 are formed on the outside of the damping sleeve 311 in the axial direction, and the damping sleeve 311 is axially movably disposed in the damping hole. Specifically, by adjusting the depths of the shock absorbing bushing 311 inserted into the shock absorbing holes to be different, different numbers of shock absorbing rings 3111 are introduced into the shock absorbing holes, so that shock absorbing effects of different degrees of softness can be obtained.

Still further, in order to ensure that a user can use the stepping exercise apparatus without dead points smoothly when operating the stepping exercise apparatus according to the present embodiment, the stepping exercise apparatus according to the present embodiment is configured such that when the crank 351 in one of the crank slider mechanisms 35 is positioned on the same straight line as the axis of the corresponding link 352, the crank 351 in the other crank slider mechanism 35 is staggered with the axis of the corresponding link 352. Specifically, when the left pedal 31 moves up and down to the lower limit position, the axis of the crank 351 in the left crank slider mechanism 35 is positioned in the same line as the axis of the corresponding link 352, and at this time, the right pedal 31 is positioned at the upper part and does not reach the upper limit position, and the axis of the crank 351 in the right crank slider mechanism 35 is staggered with the axis of the corresponding link 352, so that the user can move smoothly by only pressing the right pedal 31. The above-mentioned limit condition usually occurs after the exerciser finishes exercising and goes down from the stepping exercise apparatus, wherein one pedal 31 usually reaches the lower limit position, and when the other exerciser reuses the stepping exercise apparatus, the crank block mechanism 35 corresponding to the pedal 31 located at the upper part is not at the dead point position in the initial stage, so that the pedal 31 can be easily driven to run, the occurrence of the dead point of exercise is completely avoided, and the user experience is more effectively improved. According to design requirements, when the axes of the crank 351 and the corresponding connecting rod 352 in one crank slider mechanism 35 are positioned on the same straight line, an included angle formed between the axes of the two crank 35 is 5-15 degrees. The included angle formed between the axes of the two cranks 35 can be adjusted by the synchronous adjusting assembly 27, specifically, the synchronous adjusting assembly 27 can adjust the positional relationship between the two pedals 31, and before leaving the factory or in the using process, the initial positional relationship between the two pedals 31 can be adjusted by adjusting the adjusting bolt 273, so as to adjust the size of the included angle formed between the axes of the two cranks 35.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The stepping exercise body-building device is characterized by comprising a frame, a synchronous assembly and two pedal assemblies, wherein the two pedal assemblies are arranged left and right and are arranged on the frame;

the synchronous assembly comprises a synchronous shaft and two synchronous wheels with opposite rotation directions, the synchronous shaft is rotatably arranged on the frame, the two synchronous wheels are respectively connected with the synchronous shaft in a transmission way, the synchronous wheels are arranged at the upper end parts of the corresponding rear swing arms, and the upper end parts of the rear swing arms and the corresponding synchronous wheels are coaxially arranged and rotatably arranged on the frame;

the two ends of the synchronous shaft are respectively provided with a driving wheel, a first synchronous belt is arranged between one driving wheel and the synchronous wheel on the corresponding side, and a second synchronous belt is arranged between the other driving wheel and the synchronous wheel on the corresponding side; the first synchronous belt is wound between the corresponding driving wheel and the corresponding synchronous wheel in the same winding direction, and the second synchronous belt is wound between the corresponding driving wheel and the corresponding synchronous wheel in the opposite winding direction; the first synchronous belt and the second synchronous belt are respectively fixed on the corresponding synchronous wheels, the outer circumferences of the driving wheels are of gear structures, and the first synchronous belt and the second synchronous belt are of rack belts;

in addition, a synchronous adjusting assembly is arranged on the synchronous wheel and comprises an adjusting bracket, two positioning blocks and two adjusting bolts, wherein the two positioning blocks are arranged in a back direction and are respectively and slidably arranged on the adjusting bracket, a slot for positioning the tooth strip is formed in each positioning block, a tooth structure is formed in each slot, and the adjusting bolts are in threaded connection with the corresponding end parts of the adjusting bracket and are abutted against the positioning blocks;

the adjusting support is of a pipeline structure, the positioning blocks are arranged in the pipeline structure in a sliding mode, two ends of the adjusting support are respectively provided with a socket, detachable baffles are arranged in the sockets, threaded holes are formed in the baffles, the two positioning blocks are located between the two baffles, and the adjusting bolts are connected in the threaded holes in a threaded mode; the positioning block is further provided with a positioning blind hole, and the end part of the adjusting bolt is inserted into the corresponding positioning blind hole.

2. The stepping exercise machine according to claim 1, wherein the support is provided with a slide rail provided corresponding to the pedal assembly, and the slider is slidably provided on the slide rail.

3. The stepping exercise exerciser according to claim 2, wherein one end of the slide rail is hinged to the frame, and the other end of the slide rail is provided with a driving mechanism for driving the slide rail to rotate.

4. The stepping exercise machine of claim 3, wherein an elastic expansion member is further provided between the slide rail and the frame.

5. The stepping exercise machine of claim 2, wherein the slide is a sliding sleeve, the sliding sleeve being sleeved on the sliding rail; or the sliding piece comprises a mounting frame and three guide wheels rotatably mounted on the mounting frame, the connecting rod is hinged on the mounting frame, a sliding channel is formed between one guide wheel and the other two guide wheels, and the sliding rail is inserted in the sliding channel.

6. The stepping exercise machine according to claim 1, wherein the front portion of the pedal is provided with a shaft hole, the rear portion of the pedal is provided with a damper hole, a damper sleeve is provided in the damper hole, the rear end portion of the support rod is provided with a first mounting shaft and a second mounting shaft, the first mounting shaft is provided in the shaft hole, and the second mounting shaft is provided in the damper sleeve.

7. The stepping exercise machine of claim 1, wherein the cranks of one of the crank slide mechanisms are staggered with respect to the axes of the corresponding links after the cranks of the other crank slide mechanism are positioned on the same straight line as the axes of the corresponding links.