Exercise machine and movable frame and mobile wheel adjustment device thereof

Abstract

The utility model relates to the technical field of body -building equipment, concretely relates to a body -building equipment and mobile rack and mobile wheel adjusting device thereof. Mobile wheel adjusting device includes swing wheel seat, push wheel group and mobile wheel, swing wheel seat swings up and down around first axis and has the action surface that resists with push wheel group, push wheel group swings between push position and retreat position around second axis, and the push position of push wheel group is set with first rolling body and second rolling body along its swing direction from push position to retreat position in proper order, first rolling body and second rolling body are in contact with the action surface and roll at the same time when in push position, and second rolling body is away from the action surface when in retreat position. The utility model discloses when in push position, first rolling body and second rolling body of push wheel group are in contact with the action surface of swing wheel seat and roll and realize interlock, strengthen the stability of mobile wheel under push position, and it is convenient to shift without the need to tilt the one side of rack and lift off the ground.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, specifically to a fitness equipment and its movable frame and adjustable wheels. Background Technology

[0002] Fitness equipment, such as treadmills, typically uses movable frames for easy transport and to restrict movement in designated locations. Currently, the most common movable frame design features casters at one end of the frame body and fixed support legs at the other. When relocation is needed, the support leg side is manually lifted to tilt the frame off the ground, using the casters for support and pushing / pulling for easy movement. However, the weight of the frame makes lifting difficult or requires two people to lift it simultaneously. Utility Model Content

[0003] The purpose of this utility model is to provide a fitness equipment and its movable frame and moving wheel adjustment device, which can be kept in a designated position and can be easily moved without being lifted off the ground, and the moving wheels are stably kept in the top position during the transfer.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A movable wheel adjustment device includes a swing wheel seat, a push wheel assembly, and a movable wheel installed at the bottom of the swing wheel seat. The swing wheel seat swings up and down around a first axis and has a working surface that abuts against the push wheel assembly. The push wheel assembly swings between a push position and a retract position around a second axis. The push wheel assembly has a push part that abuts against the working surface. The push part has a first rolling element and a second rolling element arranged sequentially along its swing direction from the push position to the retract position. In the push position, the first rolling element and the second rolling element simultaneously roll and contact the working surface. In the retract position, the second rolling element, located downstream of the push part in the swing direction from the push position to the retract position, moves away from the working surface.

[0006] Preferably, the movable wheel adjustment device further includes a fixed base, the swing wheel base is rotatably connected to the fixed base via a first rotating shaft, and the push wheel assembly is rotatably connected to the fixed base via a second rotating shaft.

[0007] Preferably, a reset element is also connected between the swing wheel seat and the fixed seat; the reset element is a tension spring.

[0008] Preferably, the moving wheel adjustment device further includes a drive mechanism that drives the jacking wheel assembly to swing between a jacking position and a retracting position around a second axis.

[0009] Preferably, the drive mechanism is a manual drive mechanism, an electric drive mechanism, a pneumatic drive mechanism, or a hydraulic drive mechanism.

[0010] Preferably, the manual drive mechanism includes an operating lever and a movable linkage assembly. The operating lever rotates around a third axis, and the end of the operating lever is movably connected to the push wheel assembly. The movable linkage assembly has the degree of freedom to allow the push wheel assembly to swing between the push position and the retract position, and to allow the operating lever to rotate around the third axis.

[0011] Preferably, the movable link assembly includes a link and a cross coupling or a universal coupling located at both ends of the link.

[0012] This utility model also provides a movable frame for fitness equipment, including a frame body and the aforementioned movable wheel adjustment device, wherein the movable wheel adjustment device is disposed on one side of the frame body.

[0013] This utility model further provides fitness equipment, including the aforementioned movable frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model's movable frame includes a movable wheel adjustment device, which includes a swing wheel assembly and a push wheel assembly. The push wheel assembly swings around a second axis between a retracted position and a push position. When in the push position, the first and second rolling elements of the push wheel assembly simultaneously roll and engage with the working surface of the swing wheel seat to achieve interlocking, thereby enhancing the stability of the movable wheel in the push position. This allows for convenient transfer without tilting one side of the frame off the ground. When the push wheel assembly is in the retracted position, the movable wheel does not touch the ground below the support components of the frame, thus maintaining it in a designated position. Attached Figure Description

[0016] Figure 1 This utility model is a three-dimensional fitness equipment. Figure 1 .

[0017] Figure 2 This utility model is a three-dimensional fitness equipment. Figure 2 .

[0018] Figure 3 for Figure 2 The enlarged view of P shown in the figure.

[0019] Figure 4 This is an exploded view of the movable wheel adjustment device of this utility model.

[0020] Figure 5 This is a schematic diagram of the rear end of the frame in the recessed position of this utility model.

[0021] Figure 6 This is a schematic diagram of the movable wheel adjustment device in the yielding position of this utility model.

[0022] Figure 7 This is a schematic diagram of the rear end of the frame in the pushing position of this utility model.

[0023] Figure 8 This is a schematic diagram of the adjusting device for the moving wheel at the pushing position of this utility model.

[0024] The markings in the diagram are: 101, main frame; 102, roller assembly; 103, support assembly; 10, moving wheel; 20, swing wheel seat; 30, fixed seat; 40, push wheel assembly; 41, first rolling element; 42, second rolling element; 50, reset component; 61, operating lever; 62, movable linkage assembly. Detailed Implementation

[0025] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0026] like Figures 1-8 As shown, this embodiment provides a fitness equipment, specifically a treadmill, including a movable frame, a running belt mounted on the movable frame, and a running belt motor for driving the running belt. This embodiment improves upon the movable frame; the running belt, running belt motor, and their transmission relationship are conventional structures and will not be described in detail here. It should be noted that the movable frame is also applicable to other fitness equipment.

[0027] The movable frame includes a frame body 101, a roller assembly 102 installed at the front end of the frame body 101, and a support assembly 103 installed at the rear end of the frame body 101. It further includes a moving wheel adjustment device located at the rear end of the frame body 101. The moving wheels 10 of the moving wheel adjustment device can be raised and lowered to change different heights. When the moving wheels 10 are lower than the ground contact point of the support assembly 103, the rear end of the frame body 101 is grounded and supported by the moving wheel adjustment device, which facilitates movement. When the moving wheels 10 are higher than or level with the ground contact point of the support assembly 103, the rear end of the frame body 101 is mainly grounded and supported by the support assembly 103, which restricts movement.

[0028] In this embodiment, the movable wheel adjustment device includes a fixed base 30, a swing wheel base 20, a push wheel assembly 40, and a movable wheel 10 installed at the bottom of the swing wheel base 20. The push wheel assembly 40 includes two opposing push plates and a first rolling element 41 and a second rolling element 42 installed between the two push plates. The fixed base 30 is welded and fixed to the crossbeam at the rear end of the frame body 101. The swing wheel base 20 is rotatably connected to the fixed base 30 via a horizontally set first rotating shaft. The push plates of the push wheel assembly 40 are rotatably connected to the fixed base 30 via a horizontally set second rotating shaft. The horizontal height of the second rotating shaft is greater than the horizontal height of the first rotating shaft. Thus, the swing wheel base 20 swings up and down around the first axis where the first rotating shaft is located, and the push wheel assembly 40 swings between the push position and the retract position around the second axis where the second rotating shaft is located.

[0029] In this embodiment, the swing wheel seat 20 has a working surface that abuts against the push wheel assembly 40. The push wheel assembly 40 is arranged around a second axis and has a push portion that abuts against the working surface. The first rolling body 41 and the second rolling body 42 are located at the push portion. The first rolling body 41 and the second rolling body 42 are arranged sequentially along the swing direction of the push portion from the push position to the retraction position. In the push position, the first rolling body 41 and the second rolling body 42 simultaneously roll and contact the working surface. In the retraction position, the second rolling body 42, located downstream of the push portion in the swing direction from the push position to the retraction position, is away from the working surface. In this embodiment, the first rolling body 41 and the second rolling body 42 are both rollers mounted on a central shaft by ball bearings.

[0030] When the jacking part is in the retracted position, the weight of the frame causes the moving wheel 10 to experience a reaction force from the ground, ensuring it does not fall below the support assembly 103. This switches the system so that the support assembly 103 primarily provides ground support and restricts the movement of the frame body 101. Furthermore, to facilitate better upward movement of the moving wheel 10 in the retracted position, a reset member 50 is connected between the swing wheel seat 20 and the fixed seat 30. The reset member 50 is specifically a tension spring, with hooks at both ends that hook into a first hook hole on the swing wheel seat 20 and a second hook hole on the fixed seat 30, respectively. The upward pull of the tension spring causes the swing wheel seat 20 to swing upward, at which point the first rolling element 41 rests against the action surface, and the moving wheel 10 is higher than the ground contact point of the support assembly 103. The reset member 50 may be omitted in some other examples.

[0031] To facilitate the control of the jacking wheel assembly 40 swinging between the jacking position and the retracting position around the second axis, the moving wheel adjustment device also includes a drive mechanism. The drive mechanism can be a manual drive mechanism, an electric drive mechanism, a pneumatic drive mechanism, or a hydraulic drive mechanism. Specifically, in this embodiment, a manual drive mechanism is used. Figure 4 As shown.

[0032] The manual drive mechanism includes an operating lever 61 and a movable linkage assembly 62. The operating lever 61 is rotatably mounted on the frame body 101 via a hinge seat and a hinge shaft, allowing the operating lever 61 to rotate around a third axis where the hinge shaft is located. The end of the operating lever 61 is movably connected to the push wheel assembly 40 via the movable linkage assembly 62. The movable linkage assembly 62 has the freedom to allow the push wheel assembly 40 to swing between the push position and the retract position, and to allow the operating lever 61 to rotate around the third axis. Specifically, the movable linkage assembly 62 includes a connecting rod and cross couplings located at both ends of the connecting rod (in some other examples, universal couplings can be used instead of cross couplings). The connecting rod slides through a through hole in the rear crossbeam of the frame body 101. The push plate is connected to the cross coupling on the corresponding side via a first pin and a pin hole. The operating lever 61 is connected to the cross coupling on the corresponding side via a second pin and a pin hole. When the operating lever 61 is manually moved, it rotates around the third axis, causing its end to move away from the push wheel assembly 40. This rotation, transmitted via the movable linkage assembly 62, drives the push wheel assembly 40 to swing around the second axis towards the push position. In the push position, the first rolling element 41 and the second rolling element 42 of the push wheel assembly 40 roll and adhere to the action surface of the swing wheel seat 20, forming an interlock and locking it in the push position. Conversely, when the operating lever 61 is moved in the opposite direction, the movable linkage assembly 62 drives the push wheel assembly 40 to swing around the second axis towards the retracted position. Because of the degree of freedom of the movable linkage assembly 62 and its movable connection to both the push wheel assembly 40 and the operating lever 61, there is no interference during the process.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A movable wheel adjustment device, characterized in that: The device includes a swing wheel seat, a push wheel assembly, and a movable wheel installed at the bottom of the swing wheel seat. The swing wheel seat swings up and down around a first axis and has a working surface that abuts against the push wheel assembly. The push wheel assembly swings between a push position and a retract position around a second axis. The push wheel assembly has a push part that abuts against the working surface. The push part has a first rolling element and a second rolling element arranged sequentially along its swing direction from the push position to the retract position. In the push position, the first rolling element and the second rolling element simultaneously roll and contact the working surface. In the retract position, the second rolling element, which is located downstream of the push part in the swing direction from the push position to the retract position, moves away from the working surface.

2. The movable wheel adjustment device according to claim 1, characterized in that: The movable wheel adjustment device also includes a fixed base, the swing wheel base is rotatably connected to the fixed base via a first rotating shaft, and the push wheel assembly is rotatably connected to the fixed base via a second rotating shaft.

3. The movable wheel adjustment device according to claim 2, characterized in that: A reset component is also connected between the swing wheel seat and the fixed seat.

4. The movable wheel adjustment device according to claim 3, characterized in that: The reset component is a tension spring.

5. The movable wheel adjustment device according to claim 1, characterized in that: The moving wheel adjustment device also includes a drive mechanism that drives the push wheel assembly to swing between a push position and a retract position around a second axis.

6. The movable wheel adjustment device according to claim 5, characterized in that: The drive mechanism can be a manual drive mechanism, an electric drive mechanism, a pneumatic drive mechanism, or a hydraulic drive mechanism.

7. The movable wheel adjustment device according to claim 6, characterized in that: The manual drive mechanism includes an operating lever and a movable linkage assembly. The operating lever rotates around a third axis, and the end of the operating lever is movably connected to the push wheel assembly. The movable linkage assembly has the freedom to allow the push wheel assembly to swing between the push position and the retract position, and to allow the operating lever to rotate around the third axis.

8. The movable wheel adjustment device according to claim 7, characterized in that: The movable link assembly includes a link and a cross coupling or a universal coupling located at both ends of the link.

9. A movable frame for fitness equipment, characterized in that: It includes a frame body and a caster wheel adjustment device as described in any one of claims 1 to 8, wherein the caster wheel adjustment device is disposed on one side of the frame body.

10. Fitness equipment, characterized in that: Includes the movable rack as described in claim 9.

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