Running machine

Abstract

The invention provides a running machine which comprises a running belt, a running plate, a bottom frame assembly and a buffering device, and the buffering device is arranged between the running plate and a bottom frame of the bottom frame assembly. Only two ends of the running plate of the running machine are supported, and the force applied to the running belt and the running plate by an exerciser is weakened by the buffer device, so that a good training effect is provided.

Description

Technical Field

[0001] The present invention relates to the field of exercise equipment, and in particular to a treadmill. Background Art

[0002] Treadmills are fitness equipment commonly found in homes and gyms, and are one of the simplest types of home fitness equipment, making them one of the best choices for home fitness. A treadmill generally includes a chassis, on which a running board frame is provided. The running board frame is used to mount a running board around which a running belt is wound. During use, the exerciser runs on the running belt. Since the running board and the running board frame are in hard contact without buffering, the reaction force received by the exerciser during running is relatively large, and it is easy to damage joints, bones (especially the knees), etc.

[0003] Existing treadmills usually include a running belt, a chassis, and a running board, where the running board is directly fixed to the chassis. With the continuous development of treadmills, currently, a buffer pad is provided between the running board and the chassis.

[0004] Patent document CN213432784U discloses a shock-absorbing structure for a treadmill running board and a treadmill including it. The shock-absorbing structure includes a shock-absorbing pad provided between the running board and the running frame. The shock-absorbing pad is provided with an intermediate cavity to achieve a good buffer and vibration isolation effect. A clamping portion is provided at the lower part of the shock-absorbing pad, and the clamping portion is clamped with a support on the running frame to realize the installation of the shock-absorbing pad and the support.

[0005] Patent document CN108245833A discloses a buffer shock-absorbing running board for a treadmill, which includes a substrate and a running belt. The substrate is fixed on the chassis of the treadmill, and the running belt is rotatably sleeved on the substrate through a front roller and a rear roller of the treadmill. The substrate includes a PP board layer on the surface, an EVA soft material sheet layer in the middle, and an elastic rod body layer at the bottom. The PP board layer is fixed on the chassis of the treadmill, and the EVA soft material sheet layer is firmly adhered to the lower surface of the PP board layer.

[0006] In the treadmills disclosed in the above patent documents, the running board is actually directly fixed to the chassis on both sides. This results in that although a buffer pad is provided between the chassis and the running board, due to the two side parts of the running board being directly fixed to the chassis, the pressure exerted by the user during running will be directly transmitted to the chassis fixed to the running board without being buffered by the buffer pad. The central area of the running board is deformed by the force, but the ends and sides are fixed, which makes the buffer pads arranged at the two side positions of the running board unable to play a buffering function, and such buffer pads are only regarded as decorative components.

[0007] Therefore, a treadmill with enhanced buffering effect is needed. Summary of the Invention

[0008] To overcome the above problems, the present application provides a treadmill, which includes: a running belt; a running board; a chassis assembly including a bottom frame, upright members extending upward from the bottom frame, limit members fixed to the upright members, and a plurality of running board fixing devices; and a buffer device disposed between the running board and the bottom frame of the chassis assembly, wherein the plurality of running board fixing devices include a first group of running board fixing devices and a second group of running board fixing devices, the first group of running board fixing devices is located at the first end of the running board, and the second group of running board fixing devices is located at the second end of the running board opposite to the first end; and the first group of running board fixing devices and the second group of running board fixing devices are spaced apart from each other by a first predetermined distance.

[0009] In some embodiments, the first predetermined distance is 70%-95% of the length of the running board.

[0010] In some embodiments, the running board is at a predetermined angle with respect to the bottom frame of the chassis assembly, and the predetermined angle is in the range of 2-30°, such as 3° and 5°.

[0011] In some embodiments, two adjacent limit members along the length direction of the treadmill are spaced apart from each other by a second predetermined distance, and the second predetermined distance is 50%-90% of the length of the running board.

[0012] In some embodiments, the first group of running board fixing devices includes running board fixing devices on the first side of the running board and running board fixing devices on the second side of the running board opposite to the first side; and the second group of running board fixing devices includes running board fixing devices on the first side of the running board and running board fixing devices on the second side of the running board opposite to the first side.

[0013] In some embodiments, the running board fixing devices are distributed near the four corners of the treadmill.

[0014] In some embodiments, when viewed along the length direction of the treadmill, the middle area of the running board is not supported.

[0015] In some embodiments, the chassis assembly further includes a bottom plate, and the running board fixing devices are fixed to the bottom plate of the chassis assembly.

[0016] In some embodiments, the buffer device includes a supporting surface and a plurality of positioning portions extending from the supporting surface.

[0017] The running board of the treadmill according to the present application is only supported at both ends, and the forces exerted by the exerciser on the running belt and the running board are weakened by the buffer device, thereby providing a good training effect. This design avoids the problem that it is difficult to achieve the buffer function due to the running board of the traditional treadmill being directly fixed to the chassis assembly on both sides.

[0018] The treadmill according to the present application also provides a running belt and a running board with a certain inclination angle, thereby enhancing the training effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be discussed in more detail based on the exemplary embodiments in the drawings.

[0020] Figure 1 A perspective view of a treadmill according to an embodiment is shown.

[0021] Figure 2 A side cross-sectional view of a treadmill according to an embodiment is shown.

[0022] Figure 3 A treadmill according to an embodiment is shown, in which a shield is omitted.

[0023] Figure 4 Shown is Figure 3 a treadmill, in which a limiting member is omitted.

[0024] Figure 5 A drive unit is shown.

[0025] Figure 6 A top view of a treadmill with the running belt and the running board omitted is shown.

[0026] Figure 7 Shown is Figure 6 a three-dimensional perspective view of a treadmill. DETAILED DESCRIPTION

[0027] Specific embodiments of the present invention will now be described with reference to the accompanying drawings. However, the present invention can be embodied in many different forms and should not be construed as limited to the embodiments described herein; rather, these embodiments are provided so that the content of the present invention is thorough and complete, and the scope of the present invention is fully conveyed to those skilled in the art. In the drawings, like or similar numerals represent like elements.

[0028] Figure 1 A perspective view of a treadmill 1 according to an embodiment is shown. The treadmill 1 includes a pair of shields 81, 82, which are used to shield some components of the treadmill 1 (such as at least a part of the chassis assembly 30) and are configured to contact the upper surface of the running board 20.

[0029] Figure 2 A side cross-sectional view of a treadmill according to an embodiment is shown. The treadmill 1 includes a running belt 10, a running board 20 surrounded by the running belt 10, and a chassis assembly 30. In Figure 2In this case, the running board 20 forms a predetermined angle with respect to the chassis assembly 30 (particularly the bottom frame of the chassis assembly 30, which will be described in detail later). This predetermined angle can be in the range of 2 - 30°, preferably in the range of 2 - 15°, and more preferably in the range of 3 - 10°. This inclined running board 20 and thus the inclined running belt 10 advantageously increase the resistance of the exercise, thereby enhancing the exercise effect. In some embodiments, the running board 20 is substantially parallel to the chassis assembly 30.

[0030] Figure 3 A treadmill according to an embodiment is shown, in which a single shield 81 is omitted so that more details of the chassis assembly 30 are shown. The chassis assembly 30 includes a bottom frame 310, upright members 331, 332 extending upward from the bottom frame 310, and limit members 351, 352 fixed to the upright members.

[0031] Each of the limit members 351, 352 (including the limit members on the other side not shown) is used to limit the movement of the running board 20 in the length direction of the treadmill (i.e., the traveling direction of the running belt 10) and the width direction (i.e., the direction perpendicular to the traveling direction of the running belt 10). Two limit members 351, 352 adjacent to each other in the length direction of the treadmill are spaced apart by a predetermined distance, which can be 50% - 90% of the length of the running board 20, preferably 60% - 80%, and more preferably 70% or 75%.

[0032] Figure 4 A treadmill is shown Figure 3 in which the limit members 351, 352 are not shown. The chassis assembly 30 further includes a plurality of running board fixing devices 361, 362 for fixing the running board 20. The plurality of running board fixing devices are preferably distributed near the four corners of the treadmill 1. In some embodiments, the four running board fixing devices are distributed at the four corners of the treadmill 1, for example Figure 4 the two running board fixing devices 361, 362 shown on one side of the treadmill and the two hidden running board fixing devices on the other side. In some embodiments, more running board fixing devices are possible, such as six, eight, etc. In some embodiments, the running board fixing devices are arranged only at the first end (near the limit member 351) and the opposite second end (near the limit member 352) of the running board 20, and the central region and the two side regions (i.e., the region between the first end and the second end) of the running board 20 are not supported. In some embodiments, the distance between the first group of running board fixing devices located at the first end of the running board 20 and the second group of running board fixing devices located at the second end of the running board 20 is 70% - 95% of the length of the running board 20, preferably 80% - 90%, and more preferably 85%.

[0033] The treadboard fixing device of the chassis assembly 30 can be fixed to the bottom plate 380 of the chassis assembly 30, or fixed to the bottom frame 310 in other ways. The treadboard fixing devices 361, 362 can be in the form of solid or hollow support blocks or support columns. The treadboard 20 is fixed to each of the plurality of treadboard fixing devices, for example, by pins passing through the holes 220 of the treadboard 20 and the corresponding holes of the treadboard fixing device 361, or by screws passing through the threaded holes 240 of the treadboard 20 and the corresponding threaded holes of the treadboard fixing device 362. Conventional fixing connection methods in the art are also possible.

[0034] It should be understood that when the treadboard 20 according to the present application is supported only by the treadboard fixing devices at its two ends (or when the middle region of the treadboard 20 along the length direction is not supported or directly supported), the forces applied by the user to the running belt 10 and the treadboard 20 will be mainly transmitted to the chassis assembly 30 via the buffer device (which will be shown later).

[0035] Figure 4 Rollers 41, 43 are also shown, which are respectively located at the first end and the opposite second end of the treadmill 1. By the rotation of the rollers, the running belt 10 at least partially wound around the rollers 41, 43 can move along a substantially circular path.

[0036] Figure 5 The drive unit is shown. The treadmill 1 further includes a main shroud 50, which can accommodate a drive unit 60 (such as an electric motor) for driving the roller 41. The drive unit 60 can have an output shaft 612, such as the output shaft of an electric motor or a bushing attached to the output shaft of the electric motor. The output shaft 612 can be power-related to the roller 41. In some embodiments, the output shaft 612 is connected to an additional bushing 414 sleeved on the central shaft 412 of the roller 41 by means of, for example, a belt connection or a gear connection. The transmission ratio between the output shaft 612 and the roller 41 is adjustable, for example, by changing the outer diameter of the additional bushing 414 and / or the outer diameter of the output shaft 612.

[0037] Figure 6 A top view of the treadmill with the running belt and the treadboard omitted is shown. Figure 7 Shown is Figure 6 A three-dimensional perspective view of the treadmill. A buffer device 70 is placed on the bottom frame 310 of the chassis assembly 30. The buffer device 70 can be made of an elastic material such as silica gel, rubber, PVC, etc. In some embodiments, the buffer device 70 includes a support surface 720 and a plurality of positioning portions 710 (such as in the form of columns or pins) extending from the support surface 720 for cooperating with the corresponding holes on the treadboard 20. In some embodiments, the buffer device 70 further includes a stop portion 730 extending from the support surface 720, and the stop portion 730 can be used to shield the positioning portions 710 from the side.

[0038] The contour of the buffer device 70 is designed to cooperate with the running board 20 and the bottom frame of the chassis assembly 30. When the running board 20 is at a predetermined angle relative to the chassis assembly 30, the buffer device 70 has an inclined upper surface. It can be understood that the arrangement of the rollers 41, 43, the upright members 331, 332 and the limit members 351, 352 of the treadmill 1 is adapted to the running board 20 at a predetermined angle relative to the chassis assembly 30.

[0039] Although the present invention has been described above according to specific embodiments, it should be understood that the present invention is not limited to these disclosed embodiments. After reading the teachings of the present disclosure, those skilled in the art to which the present invention pertains will think of many modifications and other embodiments of the present invention, and they are covered by the present disclosure and the appended claims.

Claims

1. A treadmill, characterized in that, The treadmill includes: A running belt; A running board; A chassis assembly, which includes a bottom frame, upright members extending upward from the bottom frame, limit members fixed to the upright members, and a plurality of running board fixing devices; and A buffer device, which is arranged between the running board and the bottom frame of the chassis assembly, wherein the plurality of running board fixing devices include a first group of running board fixing devices and a second group of running board fixing devices, the first group of running board fixing devices is located at the first end of the running board, and the second group of running board fixing devices is located at the second end of the running board opposite to the first end; and the first group of running board fixing devices and the second group of running board fixing devices are spaced apart from each other by a first predetermined distance.

2. The treadmill according to claim 1, wherein the first predetermined distance is 70%-95% of the length of the running board.

3. The treadmill according to claim 1, wherein the running board forms a predetermined angle with the bottom frame of the chassis assembly, and the predetermined angle is in the range of 2-30°.

4. The treadmill according to claim 1, wherein two adjacent limit members along the length direction of the treadmill are spaced apart from each other by a second predetermined distance, and the second predetermined distance is 50%-90% of the length of the running board.

5. The treadmill according to claim 1, wherein the first group of running board fixing devices includes running board fixing devices on the first side of the running board and running board fixing devices on the second side of the running board opposite to the first side; and wherein the second group of running board fixing devices includes running board fixing devices on the first side of the running board and running board fixing devices on the second side of the running board opposite to the first side.

6. The treadmill according to claim 5, wherein the running board fixing devices are distributed near the four corners of the treadmill.

7. The treadmill according to claim 5, wherein when viewed along the length direction of the treadmill, the middle area of the running board is not supported.

8. The treadmill according to claim 1, wherein the chassis assembly further includes a bottom plate, and the running board fixing devices are fixed to the bottom plate of the chassis assembly.

9. The treadmill according to claim 1, wherein the buffer device includes a supporting surface and a plurality of positioning portions extending from the supporting surface.

Images