CN107185161B

CN107185161B - Pedal assembly and fitness equipment

Info

Publication number: CN107185161B
Application number: CN201710485859.XA
Authority: CN
Inventors: 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: 2017-06-23
Publication date: 2022-08-12
Anticipated expiration: 2037-06-23
Also published as: CN108355305B; CN107185161A; CN208130336U; CN108404352B; CN208389256U; CN108379782B; CN108379782A; CN207323946U; CN108404352A; CN108355305A; CN208145314U

Abstract

The invention discloses a pedal assembly and a body builder. Be provided with ARC structure through the upper surface with pedal, the sporter stands the position difference on pedal for the contained angle that forms between sporter's shank and the foot face is different, and finally in the motion process, the articulated amplitude of rotation of foot is just different, thereby can obtain the requirement of different amount of exercise, realizes that the user can be through pedal alright simple regulation amount of exercise, has realized richening pedal assembly's function, with the experience nature that improves body-building equipment.

Description

Pedal assembly and fitness equipment

Technical Field

The invention relates to fitness equipment, in particular to a pedal assembly and a fitness device.

Background

At present, with the improvement of living standard of people, people pay more and more attention to their health, various fitness equipment is developed and marketed, common fitness equipment in the market comprises an elliptical machine, a mountain-climbing machine, a body-type machine and the like, fitness equipment such as the elliptical machine, the mountain-climbing machine or the body-type machine and the like usually has pedals, the pedals of the conventional fitness equipment are usually of a flat plate structure, the pedals only serve as players to place the feet, and players step on the pedals to realize corresponding fitness exercises. The pedal has a single function in the actual use process, so that the experience is poor. How to design a pedal with better experience and multiple functions for sporters is a technical problem to be solved by the invention.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the utility model provides a pedal assembly and fitness equipment, the function of having realized richening pedal assembly to improve the experience nature of fitness equipment.

The technical scheme provided by the invention is that the pedal assembly comprises a pedal and a supporting rod, wherein the pedal is arranged on the supporting rod, and the upper surface of the pedal is of an arc surface structure.

Further, the upper surface of the pedal is of a convex cambered surface structure, or the upper surface of the pedal is of a concave cambered surface structure.

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

Further, a plurality of damping rings are formed on the outer portion of the damping sleeve along the axial direction, and the damping sleeve is axially movably arranged in the damping hole.

Furthermore, the pedal assembly further comprises a rear swing arm, the lower end of the rear swing arm is hinged to the support rod, the lower portion of the pedal is hinged to the support rod, and a connecting rod is hinged between the rear swing arm and the pedal.

The invention also provides a body-building device which comprises a frame and the two pedal assemblies, wherein the two pedal assemblies are arranged on the left side and the right side of the frame, and a supporting rod and a rear swing arm in each pedal assembly are arranged on the frame.

Furthermore, the pedal assembly further comprises a front swing arm and a connecting rod mechanism, the connecting rod mechanism comprises a crank, a connecting rod and a rocker which are sequentially hinged together, the rocker is hinged to the rack, a pedal in the pedal assembly is mounted at the rear end of the supporting rod, the lower end of the rear swing arm is hinged to the middle of the supporting rod, the lower end of the front swing arm is hinged to the front end of the supporting rod, and the upper end of the front swing arm is hinged to the rocker; the frame is provided with a rotatable main shaft, and the two cranks are fixed at the corresponding end parts of the main shaft;

the exercise machine further comprises a synchronization assembly; the synchronous component comprises a synchronous shaft and two synchronous wheels with opposite rotating directions, the synchronous shaft is rotatably arranged on the rack, the two synchronous wheels are respectively in transmission connection with the synchronous shaft, 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 rack.

Furthermore, the pedal assembly further comprises a front swing arm and a connecting rod mechanism, the connecting rod mechanism comprises a crank, a connecting rod and a rocker which are sequentially hinged together, a pedal in the pedal assembly is installed at the rear end part of the supporting rod, the lower end part of the rear swing arm is hinged to the middle part of the supporting rod, and the lower end part of the front swing arm is hinged to the front end part of the supporting rod; the frame is provided with a rotatable main shaft, and the two cranks are fixed at the corresponding end parts of the main shaft;

the exercise machine further comprises a synchronization assembly and a height adjustment assembly;

the synchronous assembly comprises a synchronous shaft and two synchronous wheels with opposite rotating directions, the synchronous shaft is rotatably arranged on the rack, the two synchronous wheels are respectively in transmission connection with the synchronous shaft, 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 rack;

the height adjusting assembly comprises a rotating frame, a guide rod, a sliding piece and a driving mechanism used for driving the rotating frame to rotate, the rotating frame is hinged to the rack, the guide rod is hinged to the rack, the sliding piece is slidably mounted on the guide rod, the rocker is hinged to the rotating frame, the upper end portion of the front swing arm is hinged to the guide rod, and the sliding piece is hinged to the rocker.

Further, the height adjusting assembly comprises an elastic telescopic piece, and the elastic telescopic piece is connected between the rack and the rotating frame.

Compared with the prior art, the invention has the advantages and positive effects that: according to the pedal assembly and the body builder provided by the invention, the cambered surface structure is arranged on the upper surface of the pedal, so that the positions of a sporter standing on the pedal are different, the included angles formed between the shanks and the foot surfaces of the sporter are different, and finally, the rotation amplitudes of the foot joints are different in the movement process, so that different requirements on the amount of exercise can be obtained, the user can simply adjust the amount of exercise through the pedal, the functions of the pedal assembly are enriched, and the experience of the body builder is improved.

Drawings

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

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

Figure 2 is a perspective view of an embodiment of the exercise apparatus of the present invention.

Figure 3 is an exploded view of an embodiment of the exercise apparatus of the present invention.

Figure 4 is an exploded view of the synchronizing assembly in an embodiment of the exercise machine of the present invention.

Fig. 5 is an assembly view of a rack belt and a synchronization adjustment assembly in an embodiment of an exercise machine of the present invention.

FIG. 6 is a first view showing a state of use of the foothold of the embodiment of the exercise apparatus of the present invention.

Fig. 7 is a view showing a state of use of the foothold of the embodiment of the exercise apparatus of the present invention with reference to fig. two.

Fig. 8 is a view showing a state of use of the foothold in the embodiment of the exercise apparatus of the present invention with reference to fig. three.

FIG. 9 is an assembly view of the footrest and the supporting rod in the embodiment of the exercise device of the present invention.

Figure 10 is a front view of another embodiment of the exercise apparatus of the present invention.

Figure 11 is a rear elevational view of another embodiment of the exercise machine of the present invention.

Fig. 12 is a first perspective view of another embodiment of the exercise apparatus of the present invention.

Fig. 13 is a second perspective view of another embodiment of the exercise machine of the present invention.

Figure 14 is an exploded view of another embodiment of the exercise apparatus of the present invention.

Fig. 15 is an assembly view of the guide bar and the slider in another embodiment of the exercise machine of the present invention.

FIG. 16 is an assembly view of the footrest and the supporting rod in the embodiment of the exercise apparatus of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

The invention provides a pedal assembly which comprises a pedal and a supporting rod, wherein the pedal is installed on the supporting rod, and the upper surface of the pedal is of an arc surface structure. The pedal with the arc surface structure is utilized to realize different exercise and fitness effects of different pedaling positions of a sporter, and the exercise machine adopting the pedal assembly with the structure is specifically described by taking the exercise machine with the attached drawings as an example.

As shown in fig. 1-9, the exercise machine of the present embodiment comprises a frame 1 and two pedal assemblies 3, wherein the two pedal assemblies 3 are arranged left and right and are mounted on the frame 1;

the pedal assembly 3 comprises a pedal 31 and a support rod 32; the support rod 32 is rotatably mounted on the frame 1, and the pedals 31 can move back and forth and up and down according to the exercise requirements of different exercise machines. In order to obtain the maximum exercise requirement to meet the needs of different exercisers, as shown in fig. 6-8, the upper surface of the foothold 31 is a cambered surface structure 310. Specifically, the upper surface of the pedal 31 adopts the arc-shaped structure 310, so that in the actual use process, the positions of the sporter standing on the pedal 31 are different, and in the body building process, the swing angles of the joints of the feet are different, so that different requirements on the amount of exercise can be obtained, and the upper surface of the pedal 31 can be a convex arc-shaped structure or a concave arc-shaped structure. Referring to fig. 8-10, the foot of the exerciser adopts A, B, C different positions on the pedal 31, and the angle formed between the lower leg and the foot surface of the exerciser is different, so that different amounts of exercise can be obtained.

Preferably, in order to improve the comfort of the sporter, as shown in fig. 9, a shaft hole (not marked) is provided at the front portion of the foothold 31, a shock absorbing hole (not marked) is provided at the rear portion of the foothold 31, a shock absorbing sleeve 311 is provided in the shock absorbing hole, a first mounting shaft 321 and a second mounting shaft 322 are provided at the rear end portion of the support bar 32, the first mounting shaft 321 is provided in the shaft hole, and the second mounting shaft 322 is provided in the shock absorbing sleeve 311. Specifically, the pedals 31 can rotate with a certain amplitude through the first mounting shaft 321, and the rear part of the pedals 31 can obtain a good damping effect through the damping sleeve 311, so that when the sporter has an excessive motion amplitude and impacts the pedals 31, the impact force of the pedals 31 can be effectively reduced by using the damping sleeve 311 to protect the feet of the sporter. In order to adjust the damping force, a plurality of damping rings 3111 are formed on the outer portion of the damping sleeve 311 in the axial direction, and the damping sleeve 311 is axially movably disposed in the damping holes. Specifically, the depth of inserting the shock absorbing hole is different through adjusting the shock absorbing sleeve 311 for the shock absorbing rings 3111 of different quantity enter into the shock absorbing hole, and thus the shock absorbing effect of different soft and hard degrees can be obtained.

Similarly, as shown in fig. 16, the pedals 31 can be installed in the following manner: the footrest assembly 3 can further comprise a rear swing arm 33, the lower end of the rear swing arm 33 is hinged to the support rod 32, the lower portion of the footrest 31 is hinged to the support rod 32, and a connecting rod 312 is hinged between the rear swing arm 33 and the footrest 32. Specifically, a four-bar linkage is formed between the support rod 32, the connecting rod 312, the rear swing arm 33 and the pedal 32, and in the moving process, the connecting rod 312 drives the pedal 32 to rotate, so that the walking posture of a person on the land can be simulated, and the connecting rods 312 with different lengths can provide different experience body-building effects according to the requirements of different users.

According to the pedal assembly provided by the invention, the cambered surface structure is arranged on the upper surface of the pedal, so that the positions of a sporter standing on the pedal are different, the included angles formed between the shanks and the foot surfaces of the sporter are different, and finally, the rotation amplitudes of the foot joints are different in the exercise process, so that different exercise amounts can be obtained, the exercise amount can be simply adjusted by a user through the pedal, the functions of the pedal assembly are enriched, and the experience of a body-building device is improved.

Based on the above technical solution, optionally, the pedal assembly 3 further includes a front swing arm 34 and a link mechanism 35, the link mechanism 35 includes a crank 351, a link 352 and a rocker 353 which are sequentially hinged together, the rocker 353 is hinged on the frame 1, the pedal 31 is installed at the rear end of the support rod 32, the middle part of the support rod 32 is rotatably installed on the frame 1, the lower end of the front swing arm 34 is hinged at the front end of the support rod 32, and the upper end of the front swing arm 34 is hinged on the rocker 353; the frame 1 is provided with a rotatable main shaft 11, and the two cranks 351 are fixed at corresponding ends of the main shaft 11. The player can move the pedals 31 up and down by stepping on the pedals 31.

This embodiment fitness equipment still includes synchronizing assembly 2, and synchronizing assembly 2 includes synchronizing shaft 21 and two synchronizing wheel 22 that rotate opposite direction, synchronizing shaft 21 is rotatable install in on the frame 1, two synchronizing wheel 22 respectively with synchronizing shaft 21 transmission is connected, synchronizing wheel 22 sets up correspondingly the upper end of back swing arm 33, the upper end of back swing arm 33 with correspond synchronizing wheel 22 coaxial setting and rotatable installation in on the frame 1.

Specifically, the support rod 32 with pedals 31 installed therein in the exercise apparatus of the present embodiment is suspended 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 at the same time, the situation that the stress variation of the exerciser in the stepping process is too large due to the length variation of the force arm of the pedal 31 can be reduced. More importantly, the upper end of the front swing arm 34 is hinged to the rocker 353 of the link mechanism 35, the up-and-down movement of the pedal 31 is limited by the link mechanism 35, the link mechanism 35 can effectively guide the movement track of the front swing arm 34, the up-and-down movement and the back-and-forth movement of the pedal 31 are not affected by each other, and the smooth and soft operation of the exercise machine is ensured. In addition, the pedal assemblies 3 arranged on the left and right of the frame 1 ensure synchronous operation through the synchronizing assembly 2, so that the pedals 31 on one side move downwards synchronously while the pedals 31 on the other side move downwards, meanwhile, the two ends of the main shaft 11 can further play a role in synchronization through being connected with the corresponding cranks 351, and the stepping movement is ensured to be softer and smoother. In order to obtain damping during exercise, the exercise machine of this embodiment further includes a first damper 101 and a second damper 102, the main shaft 11 is connected to the first damper 101, the synchronizing shaft 21 is connected to the second damper 102, during stepping exercise of the exerciser, the back and forth movement of the pedals 31 will drive the second damper 102 to operate through the synchronizing shaft 21, and the up and down movement of the pedals 31 will drive the first damper 101 to operate through the main shaft 11, while the first damper 101 and the second damper 102 may be in the form of dampers commonly used in the exercise machines in the prior art, for example: friction dampers, electromagnetic dampers, etc.; meanwhile, according to design requirements, the main shaft 11 and/or the synchronizing shaft 21 are further connected with an inertia wheel 10, wherein, taking the case that the main shaft 11 is 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, an armrest 331 is further provided at an upper end of the rear swing arm 33 to facilitate grasping by a sporter.

The specific use process of the exercise machine of the embodiment is as follows:

firstly, the up-down motion realization process of the stepping motion of a sporter, wherein the foot of the sporter steps on the pedal 31 to apply downward thrust, the force is transmitted to the front swing arm 34 through the supporting rod 32, the front swing arm 34 transmits the upward thrust to the rocker 353 through the rotating shaft of the front swing arm, the rocker 353 transmits the upward thrust to the connecting rod 352, the connecting rod 352 transmits the upward tension to the crank 351, the other end of the crank 351 is tightly matched and connected 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, and one end of the crank 351 is pulled upwards by the connecting rod 352, the crank 351 rotates clockwise around the main shaft 11, and because the two ends of the main shaft 11 are tightly matched and connected with the two cranks 351, the crank 351 at one end of the main shaft 11 rotates to drive the crank 351 at the other end to rotate symmetrically, so that the pedal assembly 3 at the other side of the rack 1 moves symmetrically, the foot at the other side of a sporter is lifted, and the up-and-down action of the stepping motion is realized. In addition, the inertia design of the superposition combination of the inertia of the first damper 101 and the inertia wheel 10 makes the up-and-down movement of the stepping movement of the exerciser have no pause, and the stepping movement is softer and smoother.

Secondly, the process of realizing the forward and backward movement of the stepping movement of the sporter is that the rear swing arm 33 and the corresponding synchronizing wheel 22 are fixed on the same shaft and are rotatably installed on the frame 1 through the shaft, meanwhile, the front swing arm 34 is hung on the rocker 353 to move forward and backward in a swing arm manner, the support rod 32 is connected with the rear swing arm 33 and the front swing arm 34 to form a connecting rod structure similar to a parallelogram, and the pedal 12 is connected through the support rod 32 to move forward and backward. The other side of the frame 1 is symmetrically designed with the same structure, and the pedals 31 on the left and right sides can reversely and synchronously move under the action of the synchronous component 2, thereby realizing the movement of stepping before and after the stepping movement of a sporter. In addition, the inertia of the second damper 102 is utilized to make the back and forth movement of the stepping movement of the exerciser have no pause, so that the stepping movement is softer and smoother.

It can be known from the above that, except that the connecting rod mechanism 35 itself is the connecting rod structure, the supporting rod 32, the rear swing arm 33 and the front swing arm 34 also form the connecting rod structure, and two sets of connecting rod structures can be utilized to ensure that the pedal 31 can simultaneously move up and down and back and forth, and can also ensure the large-amplitude movement and the stress balance of the pedal 31, thereby effectively improving the experience of the sporter.

Further, the connection manner between the synchronizing shaft 21 and the synchronizing wheel 22 in the synchronizing assembly 2 in this embodiment may adopt a conventional synchronizing structure in the existing fitness equipment, preferably, two end portions of the synchronizing shaft 21 are respectively provided with a transmission wheel 23 and a transmission wheel 24, a first synchronizing belt 25 is arranged between the transmission wheel 23 and the synchronizing wheel 22 on the corresponding side, and a second synchronizing belt 26 is arranged between the other transmission wheel 24 and the synchronizing wheel 22 on the corresponding side; the first timing belts 25 are wound in the same winding direction between the corresponding driving pulley 23 and the timing pulley 33, and the second timing belts 26 are wound in the opposite winding direction between the corresponding driving pulley 24 and the timing pulley 22. Specifically, since the left and right pedals 31 move in opposite directions, the first timing belt 25 is wound around the corresponding driving wheel 23 and synchronizing wheel 33 in the same winding direction, so that the driving wheel 23 and the corresponding synchronizing wheel 33 rotate in the same direction, and the second timing belt 26 is wound around the corresponding driving wheel 24 and synchronizing wheel 33 in opposite winding directions, so that the driving wheel 24 and the corresponding synchronizing wheel 33 rotate in opposite directions, thereby satisfying the requirement of synchronous but opposite movement of the left and right pedals 31. In order to improve the synchronization consistency, the outer circumferences of the synchronizing wheel 33, the transmission wheel 23 and the transmission wheel 24 are all in gear structures, and the first synchronizing belt 25 and the second synchronizing belt 26 are both in toothed belt; alternatively, the first timing belt 25 and the second timing belt 26 may be fixed to the corresponding timing wheels 33, respectively, so that it is only necessary to provide the outer circumferences of the driving wheel 23 and the driving wheel 24 with gear structures. Preferably, a synchronous adjusting assembly 27 is arranged on the synchronizing wheel, the synchronous adjusting assembly 27 includes an adjusting bracket 271, two positioning blocks 272 and two adjusting bolts 273, the two positioning blocks 272 are oppositely arranged and respectively slidably arranged on the adjusting bracket 271, an insertion slot 270 for positioning the rack belt is formed in the positioning block 272, a tooth structure is formed in the insertion slot 270, and the adjusting bolts 273 are threadedly connected to corresponding ends of the adjusting bracket 271 and abut against the positioning blocks 272. Specifically, in the assembling process, two end portions of the fixed rack belt can be correspondingly connected through two positioning blocks 272, taking the first synchronous belt 25 as an example, the 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 bracket 271, and by simultaneously rotating the two adjusting bolts 272, the adjusting bolts 272 abut against the positioning blocks 272 to drive the positioning blocks 272 to move on the adjusting bracket 271, so as to change the positions of the positioning blocks 272, and thus the relative positions of the two pedals 31 can be adjusted according to needs. Wherein, the adjusting bracket 271 is a pipe structure, the positioning block 272 is slidably disposed in the pipe structure, the two ends of the adjusting bracket 271 are respectively provided with a socket (not marked), in which a detachable baffle 274 is provided, threaded holes (not marked) are formed in the baffle plates 274, the two positioning blocks 272 are positioned between the two baffle plates 274, adjusting bolt 273 threaded connection in the screw hole, adopt pipeline structure to adjust support 271 can be effectual carry on spacingly to the opening of slot 270 of locating piece 272, avoid taking place to warp at slot 270 and lead to the too big rack area of opening to break away from by rack area pulling force, locating piece 272 is placed in the pipeline that adjusts support 271 formed, can avoid slot 270 opening too big on the one hand, and on the other hand locating piece 272 slides in the pipeline and can make things convenient for the sporter to adjust, has improved use reliability and convenience. The positioning block 272 is further provided with a positioning blind hole 2721, the 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, a limit plate 28 is further disposed on the synchronizing shaft 21, a limit wheel 12 matched with the limit plate 28 is further disposed on the frame 1, an arc guide portion 281 and two upturned limit portions 282 are formed at the edge of the limit plate 28, the arc guide portion 281 is located between the two limit portions 282, when the pedal 31 moves within a normal range, the arc guide portion 281 contacts with the limit wheel 12, the upturned limit portions 282 contact with the limit wheel 12 in the process that the pedal 31 gradually moves to a limit position, and finally the maximum stroke position of the pedal 31 is limited by the cooperation of the gradually upturned limit portions 282 and the limit wheel 12.

Still further, in order to ensure smooth use without dead points when the exerciser operates the exercise machine of the present embodiment, the exercise machine of the present embodiment is configured such that the cranks 351 of one of the link mechanisms 35 are disposed on the same straight line as the axes of the corresponding links 352, and the cranks 351 of the other link mechanism 35 are disposed on the same straight line as the axes of the corresponding links 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 link mechanism 35 and the axis of the corresponding link 352 are located on the same straight line, and at this time, the right pedal 31 is located at the upper portion and does not reach the upper limit position, and the axis of the crank 351 in the right link mechanism 35 and the axis of the corresponding link 352 are arranged in a staggered manner, so that the exerciser can move smoothly only by pressing the right pedal 31. The above-mentioned limit condition usually occurs after the exerciser gets up and down from the exercise machine after exercising, one of the pedals 31 usually reaches the lower limit position, and when another exerciser uses the exercise machine again, the link mechanism 35 corresponding to the upper pedal 31 is not in the dead point position in the initial stage, so that the pedal 31 can be easily driven to operate, the occurrence of the exercise dead point is completely avoided, and the user experience is more effectively improved. According to design requirements, after the axes of the crank 351 and the corresponding connecting rod 352 in one of the connecting rod mechanisms 35 are located on the same straight line, the included angle formed between the axes of the two cranks 35 is 5-15 degrees. The included angle formed between the axes of the two cranks 35 can be adjusted through the synchronous adjusting assembly 27, specifically, the synchronous adjusting assembly 27 can adjust the position relationship between the two pedals 31, and before leaving the factory or in the using process, the initial position 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.

Based on the above technical solution, optionally, as shown in fig. 10 to fig. 15, the exercise machine of this embodiment further includes a height adjustment assembly 4 for adjusting the up-and-down movement stroke of the pedals 31, the height adjustment assembly 4 includes a rotating frame 41, a guide rod 42, a sliding member 43 and a driving mechanism 40 for driving the rotating frame 41 to rotate, the rotating frame 41 is hinged to the frame 1, the guide rod 42 is hinged to the frame 1, the sliding member 43 is slidably mounted on the guide rod 42, the rocker 353 is hinged to the rotating frame 41, the upper end of the front swing arm 34 is hinged to the guide rod 42, and the sliding member 43 is hinged to the rocker 353. Specifically, the front swing arm 34 is indirectly hinged to the rocker 353 through the guide rod 42 and the sliding member 43, the driving mechanism 40 drives the rotating frame 41 to rotate, and the rocker 353 can drive the sliding member 43 to move on the guide rod 42 so as to change the position of the sliding member 43 on the guide rod 42, and meanwhile, after the rotating frame 41 rotates, the height position of the hinged portion of the rocker 353 and the rotating frame 41 is correspondingly changed, so that the limit position of the up-and-down movement of the pedal 31 can be adjusted, the effect of adjusting the up-and-down movement stride of the pedal 31 is realized, and the body building requirements of different sporters are met.

Further, there are various ways in which the sliding member 43 can slide on the guide rod 42, such as: the sliding piece 43 may be a sliding sleeve, the sliding sleeve is rotatably installed on the rocker 353, and the sliding sleeve is sleeved on the guide rod 42; preferably, in order to improve the sliding smoothness, the sliding member 43 includes a mounting frame 431 and three guide wheels rotatably mounted on the mounting frame, the mounting frame 431 may be composed of two opposite mounting plates 4310, and the mounting frame 431 is rotatably mounted on the rocker 353, wherein a sliding channel is formed between one of the guide wheels and the other two guide wheels, and the guide rod 42 is inserted in the sliding channel. In particular, three guide wheels are mounted between the two mounting plates 4310, and the sliding of the slider 43 with respect to the guide rod 42 is achieved by the rolling of the guide wheels on the guide rod 42.

In order to avoid the impact noise caused by the movement gap between the sliding member 43 and the guide rod 42, an elastic layer is disposed on the outer circumferential surface of the guide wheel, for example: the guide wheels can be wrapped with components with elastic buffering functions such as rubber layers and the like, after the guide wheels are arranged on the guide rod 42, the guide rod 42 is clamped between the three guide wheels, and the elastic layers deform under stress, so that the guide wheels can be ensured to clamp the guide rod 42 tightly all the time. Or, the guide wheel is divided into an adjustable guide wheel 432 and two positioning guide wheels 433, the two positioning guide wheels 433 are located on one side of the guide rod 42, the adjustable guide wheel 432 is located on the other side of the guide rod 42, a strip-shaped hole 4311 is formed in the mounting frame 431, the positioning guide wheels 433 are rotatably mounted on the mounting frame 431, a rotating shaft 4321 of the adjustable guide wheel 432 is arranged in the strip-shaped hole 4311, and the mounting frame 431 is further provided with an elastic piece 44 for applying elastic force to the rotating shaft 4321 of the adjustable guide wheel 432 so that the adjustable guide wheel is tightly attached to the guide rod 42. Specifically, the elastic member 44 applies an elastic force to the rotating shaft 4321 of the adjustable guide wheel 432, so as to ensure that the adjustable guide wheel 432 is always tightly abutted against the guide rod 42, thereby avoiding the occurrence of a movement gap. The mounting frame 431 is further provided with a flange structure 4312, the elastic element 44 is arranged between the flange structure 4312 and the rotating shaft 4321 of the adjustable guide wheel 432, and the elastic element 44 may be a compression spring compressed between the flange structure 4312 and the rotating shaft 4321 of the adjustable guide wheel 432; or, the elastic element 44 is an elastic ball, a positioning groove (not marked) is arranged at the end of the rotating shaft 4321 of the adjustable guide wheel 432, the elastic ball is located in the positioning groove, a tensioning bolt 45 is connected to the flange structure 4312 through a thread, and the tensioning bolt 45 abuts against the elastic ball, so that the elastic ball is squeezed between the rotating shaft 4321 and the tensioning bolt 45, and the elastic ball is ensured to apply elasticity to the rotating shaft 4312.

Further, the height adjustment assembly 4 includes an elastic expansion member 46, and the elastic expansion member 46 is connected between the frame 1 and the rotating frame 41. Specifically, because the rotating frame 41 is also affected by the reciprocating acting force during the up-and-down movement of the pedals 31, the elastic telescopic element 46 can ensure that the rotating frame 41 is always in a state of force balance, so as to well alleviate the gap formed between the rotating frame 41 and the frame 1 and other connecting members, and ensure that the impact noise caused by the mechanical connection gap does not occur during the use of the exercise equipment by the sporter, while the elastic telescopic element 46 and the driving mechanism 40 are located on the same side of the rotating frame 41, and the elastic telescopic element 46 is used for applying a pulling force to the rotating frame 41, for example: the elastic expansion piece 46 can adopt a tension spring; alternatively, the elastic expansion members 46 and the driving mechanism 40 are located at both sides of the rotating frame 41, and the elastic expansion members 46 are used for applying thrust to the rotating frame 41, such as: the elastic expansion element 46 may be a compressed spring or a gas spring.

firstly, the up-down motion realization process of the stepping motion of a sporter, wherein the foot of the sporter steps on the pedal 31 to apply downward thrust, the force is transmitted to the front swing arm 34 through the supporting rod 32, the front swing arm 34 transmits the upward thrust to the rocker 353 through the guide rod 42 and the sliding piece 43, the rocker 353 transmits the upward thrust to the connecting rod 352, the connecting rod 352 transmits the upward tension to the crank 351, the other end of the crank 351 is tightly matched and connected 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, and one end of the crank 351 is pulled upwards by the connecting rod 352, the crank 351 rotates clockwise around the main shaft 11, and because the two ends of the main shaft 11 are tightly matched and connected with the two cranks 351, the crank 351 at one end of the main shaft 11 rotates to drive the crank 351 at the other end to rotate symmetrically, so that the pedal assembly 3 at the other side of the rack 1 moves symmetrically, the foot at the other side of a sporter is lifted, and the up-and-down action of the stepping motion is realized. In addition, the inertia of the first damper 101 and the inertia design of the superposition combination of the inertia wheel 10 make the up-and-down movement of the stepping movement of the sporter have no pause, and the stepping movement is softer and smoother.

Secondly, the process of realizing the forward and backward movement of the stepping movement of the sporter is that the rear swing arm 33 and the corresponding synchronizing wheel 22 are fixed on the same shaft and are rotatably arranged on the frame 1 through the shaft, meanwhile, the front swing arm 34 is hung on the guide rod 42 to do forward and backward swing arm movement, the support rod 32 is connected on the rear swing arm 33 and the front swing arm 34 to form a connecting rod structure similar to a parallelogram, and the pedal 12 is connected through the support rod 32 to do forward and backward movement. The other side of the frame 1 is symmetrically designed with the same structure, and the pedals 31 on the left and right sides can reversely and synchronously move under the action of the synchronous component 2, thereby realizing the movement of stepping before and after the stepping movement of a sporter. In addition, the inertia of the second damper 102 is utilized to make the back and forth movement of the stepping movement of the exerciser have no pause, so that the stepping movement is softer and smoother.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An exercise machine comprises a frame, and is characterized by further comprising two pedal assemblies and a height adjusting assembly;

the two pedal assemblies are arranged on the left side and the right side of the rack, each pedal assembly comprises a pedal and a support rod, the pedals are mounted on the support rods, the upper surfaces of the pedals are of cambered surface structures, and the support rods are mounted on the rack; the pedal assembly further comprises a front swing arm and a connecting rod mechanism, the connecting rod mechanism comprises a crank, a connecting rod and a rocker which are sequentially hinged together, the rocker is hinged to the rack, a pedal in the pedal assembly is mounted at the rear end of the supporting rod, the lower end of the front swing arm is hinged to the front end of the supporting rod, and the upper end of the front swing arm is hinged to the rocker; the frame is provided with a rotatable main shaft, and the two cranks are fixed at the corresponding end parts of the main shaft;

the height adjusting assembly comprises a rotating frame, a guide rod, a sliding piece and a driving mechanism for driving the rotating frame to rotate, the rotating frame is hinged to the rack, the guide rod is hinged to the rack, the sliding piece is slidably mounted on the guide rod, the rocker is hinged to the rotating frame, the upper end of the front swing arm is hinged to the guide rod, and the sliding piece is hinged to the rocker; the sliding part comprises a mounting rack and three guide wheels which are rotatably arranged on the mounting rack, the mounting rack is rotatably arranged on the rocker, a sliding channel is formed between one guide wheel and the other two guide wheels, and the guide rod is inserted into the sliding channel; the guide wheel is divided into an adjustable guide wheel and two positioning guide wheels, the two positioning guide wheels are located on one side of the guide rod, the adjustable guide wheels are located on the other side of the guide rod, strip-shaped holes are formed in the mounting frame, the positioning guide wheels are rotatably mounted on the mounting frame, rotating shafts of the adjustable guide wheels are arranged in the strip-shaped holes, and the mounting frame is further provided with elastic pieces used for applying elastic force to the rotating shafts of the adjustable guide wheels to enable the adjustable guide wheels to be tightly attached to the guide rod.

2. The exercise apparatus of claim 1, wherein the upper surface of the foothold is a convex arc or the upper surface of the foothold is a concave arc.

3. The exercise apparatus of claim 1, wherein the front portion of the foot pedal is provided with a shaft hole, the rear portion of the foot pedal is provided with a shock absorbing hole, a shock absorbing sleeve is provided in the shock absorbing hole, and the rear end portion of the support bar is provided with a first mounting shaft and a second mounting shaft, the first mounting shaft being disposed in the shaft hole, the second mounting shaft being disposed in the shock absorbing sleeve.

4. The exercise machine of claim 3, wherein the outer portion of the shock sleeve is formed with a plurality of shock rings in the axial direction, the shock sleeve being axially movably disposed in the shock aperture.

5. The exercise apparatus of claim 1, wherein the foot pedal assembly further comprises a rear swing arm, a lower end of the rear swing arm is hinged to the support rod, a lower portion of the foot pedal is hinged to the support rod, a connecting rod is hinged between the rear swing arm and the foot pedal, and the rear swing arm is mounted on the frame.

6. The exercise machine of claim 5, further comprising a synchronizing assembly; the synchronous component comprises a synchronous shaft and two synchronous wheels with opposite rotating directions, the synchronous shaft is rotatably arranged on the rack, the two synchronous wheels are respectively in transmission connection with the synchronous shaft, 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 rack.

7. The exercise machine of claim 1, wherein the height adjustment assembly comprises a resilient telescoping member connected between the frame and the turret.