Step pitch increasing mechanism of elliptical machine

Abstract

The utility model discloses a step pitch increasing mechanism of an elliptical machine. The step pitch increasing mechanism comprises a pedal part, a crank part and a connecting rod arranged between the pedal part and the crank part in a matched mode. One end of the connecting rod is fixed to the crank component, and the other end of the connecting rod can be movably matched with the rear end of the pedal piece in the length direction of the pedal piece. A rotating disc is fixedly connected in the connecting rod, a limiting rail is arranged at the rear end of the pedal piece, and the rotating disc is arranged in the limiting rail in a matched mode. The step pitch of the pedal is increased, so that the movement effect of the elliptical machine is greatly improved, meanwhile, the knees of a user can be prevented from being injured, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to fitness equipment, in particular to a stride lengthening mechanism of an elliptical machine. Background Art

[0002] There are many kinds of existing fitness equipment, and the elliptical machine is one of them. Unlike the circular motion of the pedals of the fitness bike, the characteristic of the elliptical machine is that the pedal position of the pedal member moves in an elliptical shape during the exercise. Since the elliptical machine can provide good exercise training for the user's heart and lungs, it is loved by a large number of users. The elliptical machine of the prior art usually includes a front bracket, a main frame, left and right pedal members, left and right cranks, rotating wheels, left and right swing arms and other components. The main frame includes a bottom bracket and a mounting frame. The mounting frame is used to install the rotating wheel and the inertia wheel, etc. The mounting frame is usually fixed on the bottom bracket, and the front bracket is fixed to the front part of the bottom bracket. The left and right cranks are connected to the rotating wheel. The upper ends of the left and right swing arms are rotatably connected to the upper part of the front bracket. The bottom ends of the left and right swing arms are respectively connected to the front ends of the left and right pedal members, and the rear ends of the left and right pedal members are respectively connected to the left and right cranks. In the prior art, the elliptical machine usually increases the stride size by increasing the crank length. However, when increasing the stride in this way, the height of the user's legs will also increase accordingly, which may easily cause knee injuries and is less practical. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a stride lengthening mechanism for an elliptical machine. By improving the structure, the stride length of the pedals is increased, so that the exercise effect of the elliptical machine is greatly improved, and at the same time, knee injuries of the user can be avoided, and the elliptical machine is highly practical.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a stride lengthening mechanism of an elliptical machine, comprising a pedal member, a crank member and a connecting rod matched between the pedal member and the crank member; one end of the connecting rod is fixed to the crank member, and the other end of the connecting rod can be movably matched to the rear end of the pedal member along the length direction of the pedal member; a turntable is fixedly connected to the connecting rod, and a limiting track is provided at the rear end of the pedal member, and the turntable is matched in the limiting track.

[0005] The limiting track is circular, and the rotating disk is fixedly connected to the connecting rod in an eccentric state.

[0006] The limiting track includes a transition ring, the periphery of which is provided with fixing holes, and the side of the rear end of the pedal member is provided with a plug-in rod, and the plug-in rod of the pedal member is matched with the fixing hole of the transition ring to fix the transition ring and the pedal member.

[0007] The limiting track also includes two guiding rings and two baffles, which are respectively fixed to the transition ring at both end surfaces of the transition ring to form a circular limiting track.

[0008] A supporting roller is also arranged at the other end of the connecting rod, and a bearing is also arranged between the supporting roller and the connecting rod.

[0009] The bottom surface of the pedal member is provided with a U-shaped member, and the supporting roller is matched between the bottom surface of the pedal member and the U-shaped member.

[0010] The support roller is provided with an annular convex ring, the bottom surface of the pedal is provided with a concave channel along the length direction of the pedal, the U-shaped member is provided with a strip slide, and the annular convex ring of the support roller is matched between the concave channel of the pedal and the strip slide of the U-shaped member.

[0011] The support roller is provided with an annular convex ring, the bottom surface of the pedal is provided with a recessed groove along the length direction of the pedal, the U-shaped part is in the shape of a thin plate, the annular convex ring of the support roller cooperates with the strip slide of the U-shaped part, and the bottom surface of the support roller cooperates with the U-shaped part.

[0012] The limiting track is elliptical, and the rotating disk is coaxially fixedly connected to the connecting rod.

[0013] The limiting track includes a rack plate, the rack plate is provided with an elliptical inner hole, the upper and lower sides of the elliptical inner hole are respectively provided with a first rack segment, the turntable is provided with a second rack segment, and the second rack segment of the turntable corresponds to the first rack segment of the rack plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Due to the use of a pedal member, a crank member and a connecting rod matched between the pedal member and the crank member; one end of the connecting rod is fixed to the crank member, and the other end of the connecting rod can be matched with the rear end of the pedal member movably along the length direction of the pedal member; a turntable is fixed in the connecting rod, and a limiting track is provided at the rear end of the pedal member, and the turntable is matched in the limiting track. This structure of the utility model allows the turntable to rotate in the limiting track while the pedal member drives the crank member to rotate. The moving distance of the connecting rod in the limiting track increases the step distance of the pedal, thereby greatly improving the exercise effect of the elliptical machine, and at the same time can avoid knee injuries to the user. It is highly practical, and the utility model has a simple structure and is easy to manufacture.

[0016] 2. Since the supporting roller is provided with an annular convex ring, and the bottom surface of the pedal is provided with a concave channel along the length direction of the pedal, the structure of the utility model can limit the supporting roller to prevent the supporting roller from being separated from the pedal during use.

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the stride length increasing mechanism of the elliptical machine of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a partial exploded schematic diagram of the elliptical machine of the first embodiment of the utility model;

[0019] Figure 2 It is an exploded schematic diagram of the step lengthening mechanism of the utility model in the first embodiment;

[0020] Figure 3 It is a side view of the elliptical machine of the utility model in the first embodiment;

[0021] Figure 4 yes Figure 3 Schematic diagram of the cross section along AA in FIG.

[0022] Figure 5 yes Figure 4 An enlarged schematic diagram of point B;

[0023] Figure 6 It is a partial exploded schematic diagram of the elliptical machine of the second embodiment of the utility model;

[0024] Figure 7 It is an exploded schematic diagram of the step lengthening mechanism of the utility model in the second embodiment;

[0025] Figure 8 It is a side view of the elliptical machine of the second embodiment of the utility model;

[0026] Fig. 9 yes Figure 8 Schematic diagram of the cross section along CC;

[0027] Fig.10 yes Fig. 9 Enlarged schematic diagram of point D. DETAILED DESCRIPTION

[0028] Embodiment 1

[0029] See also Figures 1 to 5As shown, a stride lengthening mechanism of an elliptical machine of the utility model comprises a pedal member 1, a crank member 2 and a connecting rod 3 fitted between the pedal member 1 and the crank member 2; one end of the connecting rod 3 is fixed to the crank member 2, and the other end of the connecting rod 3 can be movably fitted to the rear end of the pedal member 1 along the length direction of the pedal member 1; a turntable 31 is fixedly connected to the connecting rod 3, and a limiting track 4 is provided at the rear end of the pedal member 1, and the turntable 31 is fitted in the limiting track 4.

[0030] In this embodiment, the limiting track 4 is circular, and the turntable 3 is fixedly connected to the connecting rod 3 in an eccentric state.

[0031] In this embodiment, the limiting track 4 includes a transition ring 41, and a fixing hole 411 is provided around the periphery of the transition ring 41. A plug-in rod 11 is installed on the side of the rear end of the pedal member 1. The plug-in rod 11 of the pedal member 1 cooperates with the fixing hole 411 of the transition ring 41 to fix the transition ring 41 to the pedal member 1.

[0032] In this embodiment, the limiting track 4 further includes two guide rings 42 and two baffles 43 , which are respectively fixed to the transition ring 41 at both end surfaces of the transition ring 41 to form a circular limiting track 4 .

[0033] In this embodiment, a supporting roller 5 is further installed at the other end of the connecting rod 3 , and a bearing 6 is further installed between the supporting roller 5 and the connecting rod 3 .

[0034] In this embodiment, a U-shaped member 7 is installed on the bottom surface of the pedal member 1 , and the supporting roller 5 is fitted between the bottom surface of the pedal member 1 and the U-shaped member 7 .

[0035] In this embodiment, the support roller 5 is provided with an annular convex ring 51, the bottom surface of the pedal member 1 is provided with a recessed channel 12 along the length direction of the pedal member 1, and the U-shaped member 7 is provided with a strip slide 71. The annular convex ring 51 of the support roller 5 is fitted between the recessed channel 12 of the pedal member 1 and the strip slide 71 of the U-shaped member 7.

[0036] In this embodiment, the support roller 5 is provided with an annular convex ring 51, the bottom surface of the pedal member 2 is provided with a recessed groove 12 along the length direction of the pedal member 1, the U-shaped member 7 is in the shape of a thin plate, the annular convex ring of the support roller cooperates with the strip slide of the U-shaped member, and the bottom surface of the support roller cooperates with the U-shaped member.

[0037] The utility model discloses a stride lengthening mechanism for an elliptical machine, which comprises a pedal member 1, a crank member 2, and a connecting rod 3 fitted between the pedal member 1 and the crank member 2; one end of the connecting rod 3 is fixed to the crank member 2, and the other end of the connecting rod 3 can be fitted to the rear end of the pedal member 1 movably along the length direction of the pedal member 1; a rotating disk 31 is fixedly connected to the connecting rod 3, and a limiting track 4 is provided at the rear end of the pedal member 1, and the rotating disk 31 is fitted in the limiting track 3. With this structure of the utility model, when the pedal member 1 drives the crank member 2 to rotate, the rotating disk 31 is rotated in the limiting track 4, and the stride length of the pedal 1 is increased by the moving distance of the connecting rod 3 in the limiting track 4, thereby greatly improving the exercise effect of the elliptical machine, and at the same time, it can avoid knee injuries of the user, and the utility model has strong practicality, and the utility model has a simple structure and is easy to manufacture.

[0038] The stride lengthening mechanism of the elliptical machine of the utility model adopts that the support roller 5 is provided with an annular convex ring 51, and the bottom surface of the footrest 1 is provided with a concave channel 12 along the length direction of the footrest. This structure of the utility model can limit the support roller 5 to prevent the support roller 5 from being separated from the footrest 1 during use.

[0039] Embodiment 2

[0040] See also Figures 6 to 10 As shown, a stride lengthening mechanism of an elliptical machine of the present invention is different from that of the first embodiment in that the limiting track 4 is elliptical, and the turntable 31 is coaxially fixedly connected to the connecting rod 3 .

[0041] In this embodiment, the position limiting track 4 includes a rack plate 44, the rack plate 44 is provided with an elliptical inner hole 441, the upper and lower sides of the elliptical inner hole 441 are respectively provided with a first rack segment 442, the turntable 31 is provided with a second rack segment 311, and the second rack segment 311 of the turntable 31 is matched with the first rack segment 442 of the rack plate 44. The position limiting track 4 also includes two fixing plates 45, and the two fixing plates 45 are respectively fixed to the rack plate 44 at both end surfaces of the rack plate 44.

[0042] Another difference from the first embodiment is that there is no strip-shaped slideway on the bottom surface of the support roller to cooperate with it. One of the two fixed plates 45 is frame-shaped and cooperates with the end surface of the rack plate 44. The other fixed plate 45 is U-shaped and cooperates with the bottom surface of the pedal member 1 to limit the support roller 5.

[0043] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with the field can use the technical content disclosed above to make many possible changes and modifications to the technical solution of the utility model without departing from the scope of the technical solution of the utility model, or modify it into an equivalent equivalent embodiment. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model should fall within the scope of protection of the technical solution of the utility model.

Claims

1. A stride lengthening mechanism for an elliptical machine, comprising a pedal member, a crank member, and a connecting rod fitted between the pedal member and the crank member; characterized in that: One end of the connecting rod is fixed to the crank component, and the other end of the connecting rod can be movably engaged with the rear end of the pedal member along the length direction of the pedal member; a turntable is fixedly connected in the connecting rod, and a limiting track is provided at the rear end of the pedal member, and the turntable is engaged in the limiting track.

2. The stride lengthening mechanism of the elliptical machine according to claim 1, characterized in that: The limiting track is circular, and the rotating disk is fixedly connected to the connecting rod in an eccentric state.

3. The stride lengthening mechanism of the elliptical machine according to claim 2, characterized in that: The limiting track includes a transition ring, the periphery of which is provided with fixing holes, and the side of the rear end of the pedal member is provided with a plug-in rod, and the plug-in rod of the pedal member is matched with the fixing hole of the transition ring to fix the transition ring and the pedal member.

4. The stride lengthening mechanism of the elliptical machine according to claim 3, characterized in that: The limiting track also includes two guiding rings and two baffles, which are respectively fixed to the transition ring at both end surfaces of the transition ring to form a circular limiting track.

5. The stride lengthening mechanism of the elliptical machine according to claim 1, characterized in that: A supporting roller is also arranged at the other end of the connecting rod, and a bearing is also arranged between the supporting roller and the connecting rod.

6. The stride lengthening mechanism of the elliptical machine according to claim 5, characterized in that: The bottom surface of the pedal member is provided with a U-shaped member, and the supporting roller is matched between the bottom surface of the pedal member and the U-shaped member.

7. The stride lengthening mechanism of the elliptical machine according to claim 6, characterized in that: The support roller is provided with an annular convex ring, the bottom surface of the pedal is provided with a concave channel along the length direction of the pedal, the U-shaped member is provided with a strip slide, and the annular convex ring of the support roller is matched between the concave channel of the pedal and the strip slide of the U-shaped member.

8. The stride lengthening mechanism of the elliptical machine according to claim 7, characterized in that: The support roller is provided with an annular convex ring, the bottom surface of the pedal is provided with a recessed groove along the length direction of the pedal, the U-shaped part is in the shape of a thin plate, the annular convex ring of the support roller cooperates with the strip slide of the U-shaped part, and the bottom surface of the support roller cooperates with the U-shaped part.

9. The stride lengthening mechanism of the elliptical machine according to claim 1, characterized in that: The limiting track is elliptical, and the rotating disk is coaxially fixedly connected to the connecting rod.

10. The stride lengthening mechanism of the elliptical machine according to claim 9, characterized in that: The limiting track includes a rack plate, the rack plate is provided with an elliptical inner hole, the upper and lower sides of the elliptical inner hole are respectively provided with a first rack segment, the turntable is provided with a second rack segment, and the second rack segment of the turntable corresponds to the first rack segment of the rack plate.

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