Shock absorption and buffer device for treadmill with better efficiency

Abstract

Shock absorption and buffer device for treadmill with better efficiency (2), comprising a frame (10); a plurality of support elements (20) fixed at intervals to the two inner sides of the frame (10); a running board (30) consisting of a composite wood board; and a plurality of shock absorbing blocks (40) made of elastic plastic and having the shape of a quadrangular ring body (41) having an upper side (411), a lower side (412), a left side (413), and a right side (414), wherein the upper side (411), the lower side (412), the left side (413), and the right side (414) are connected to one another by a plurality of outwardly curved corners (415), wherein the upper side (411) and the lower side (412) are each provided with a fastening hole (42), and their cross sections have an outwardly curved arc shape, while the cross sections of the left side (413) and the right side (414) have an inwardly curved arc shape, wherein the lower side (412) is fastened to the upper side of the support element (20), and the upper side (411) is fastened to the running board (30), and the underside of the running board (30) supports upwards,wherein when the footboard (30) is pressed, the top side (411) and the bottom side (412) of the shock absorbing block (40) are compressed, while at the same time the left side (413) and the right side (414) are compressed and stretch outwards.

Description

Technical area

[0001] The invention relates to a shock absorbing and buffering device for treadmill with better efficiency (2), which has a plurality of novel shock absorbing blocks between the frame and the footboard to effectively absorb the pedaling force on the footboard, reduce the vibration of the frame and achieve the shock absorbing and buffering effect of the footboard. State of the art

[0002] The conventional shock absorption structure of a treadmill, as shown in the Fig. 1 and Fig. 2, consists of a frame 1 in which a running board 2 is provided, around which a belt 3 circulates. The user runs and steps on the belt 3. Elastic shock-absorbing blocks 5 made of rubber are fixed to the inside of the frame 1 with screws 4. The shock-absorbing blocks 5 support the running board 2 from below to buffer the shocks when the user runs and steps, thus achieving a buffering and shock-absorbing effect. However, this structure has the following disadvantages: (1) The shock-absorbing blocks 5 are in the shape of a solid straight cylinder and therefore have low elasticity. They cannot adjust the force elasticity according to the user's weight and the magnitude of the running and stepping force.(2) The direction in which the user steps on the running board 2 is not completely vertically downward, so the shock-absorbing blocks 5, which are shaped like a straight cylinder, are easily deformed and bent into a curved cylinder during actual use. This deformation is irreversible and permanent, resulting in poor cushioning and shock-absorbing effects, making the shock-absorbing blocks 5 easily damaged.

[0003] Therefore, the development of a shock absorption structure that is different from the shock absorption structure of traditional treadmills and has better shock absorption effect is a goal of this industry. Object of the invention

[0004] The shock absorption structure of conventional treadmills has problems such as twisting and deformation, poor shock absorption effect and easy damage due to the straight cylindrical shock absorption block.

[0005] The invention provides a treadmill shock absorbing and buffering device with improved efficiency, comprising: a frame; a plurality of support members fixed at intervals on the two inner sides of the frame; a running board made of a composite wood board; and a plurality of shock absorbing blocks made of elastic plastic and having the shape of a quadrangular ring body having a top, a bottom, a left side, and a right side, the top, bottom, left side, and right side being connected to each other by a plurality of outwardly curved corners, the top and bottom each being provided with a mounting hole, and their cross sections having an outwardly curved arc shape, while the cross sections of the left and right sides have an inwardly curved arc shape, the bottom being fixed to the top of the support member.and the top is attached to the running board and supports the bottom of the running board from below, whereby when the running board is pressed, the top and bottom of the shock absorption block are compressed, while at the same time the left side and the right side are compressed and stretch outwards.

[0006] The advantages of the invention are as follows: (1) When the shock absorbing block is compressed and deformed, the top and bottom, as well as the left and right sides, which are curved in opposite directions, are evenly stressed. Through the restoring force, it can quickly return to its original normal state. Therefore, it is not easy to twist arbitrarily during long-term repeated use, and has the advantage of extending its service life. (2) When assembling the shock absorption block, the blade of the screwdriver can be conveniently passed through, so the structure of the shock absorption block is convenient for assembly. Short description of the drawings Fig. 1 an exploded view of the conventional shock absorption structure, Fig. 2 a sectional view of the conventional shock absorption structure according to Fig. 1, Fig. 3 an exploded view of the invention, Fig. 4 a sectional view of the invention, Fig. 5 is a perspective view of the shock absorbing block of the invention, Fig. 6 a front view of the shock absorbing block of the invention, Fig. 7 is a side view of the shock absorbing block of the invention, Fig. 8 a representation of the 3 mm compression of the invention, Fig. 9 a representation of the compression by 7 mm of the invention, Fig. 10 is a representation of the 12 mm compression of the invention, Fig. 11 a representation of the screwing of the shock absorbing block on the support element of the invention. Ways to implement the invention

[0007] Fig. 3 to 11 show a shock absorbing and buffering device for treadmill with better efficiency (2), which comprises: a frame 10; a plurality of support elements 20 which are fixed at intervals to the two inner sides of the frame 10; a running board 30 consisting of a composite wood board; and a plurality of shock-absorbing blocks 40 made of elastic plastic and having the shape of a quadrangular ring body 41 having an upper surface 411, a lower surface 412, a left side 413, and a right side 414. The upper surface 411, the lower surface 412, the left side 413, and the right side 414 are connected to each other by a plurality of outwardly curved corners 415. The upper surface 411 and the lower surface 412 are each provided with a mounting hole 42, and their cross sections have an outwardly curved arc shape, while the cross sections of the left side 413 and the right side 414 have an inwardly curved arc shape. The lower surface 412 is attached to the upper surface of the support member 20, and the upper surface 411 is attached to the running board 30 and supports the underside of the running board 30 from below.When the footboard 30 is pressed, the top side 411 and the bottom side 412 of the shock absorbing block 40 are compressed, while at the same time the left side 413 and the right side 414 are compressed and stretch outwards.

[0008] The diameter of the mounting hole 42 of the top side 411 of the shock absorbing block 40 is larger than the diameter of the mounting hole 42 of the bottom side 412.

[0009] Based on the structure of the above specific embodiment, assembly and use of the present invention are described as follows: (1) First, in the actual implementation of the shock absorbing block 40, the wall thickness A of the annular body 41, the maximum outer diameter BB of the longitudinal section, the maximum outer diameter CC of the cross-sectional section, and the axial length DD can be set to 3.5 to 6.5 mm, 25 to 45 mm, 20 to 30 mm, and 20 to 30 mm, respectively. However, the above dimensions are only for the following clear description of a preferred embodiment of the present invention and should not be used to limit the implementation scope of the present invention, and can be adjusted according to customer needs. (2) When all the shock absorbing blocks 40 are actually assembled as shown in Fig. 11, the blade of a screwdriver 60 is first passed through the mounting hole 42 of the top of the shock absorbing block 40, and then a screw 61 is used to fix the mounting hole 42 of the bottom of the shock absorbing block 40 to the top of the support member 20. (3) Second, after all the shock absorbing blocks 40 are assembled with the tops of the support members 20, the footboard 30 is placed on top of all the shock absorbing blocks 40. A screw 62 is used to fix the footboard 30 to the fixing hole 42 of the top of each shock absorbing block 40 through a U-shaped fixing plate 63 having a screw hole 64, thus completing the assembly between the footboard 30, all the shock absorbing blocks 40, and the support members 20. (4) In addition, the different downward forces on a single shock absorbing block 40 are described below: 1. In Fig. 8, the footboard 30 is pressed down with a force of 48 to 53 kg and the shock absorbing block 40 is compressed by 3 mm. 2. In Fig. 9, the footboard 30 is pressed down with a force of 85 to 89 kg and the shock absorbing block 40 is compressed by 7 mm. 3. In Fig. 10, the footboard 30 is pressed down with a force of 132 ~ 136 kg and the shock absorption block 40 is compressed by 12 mm.

[0010] By constructing the embodiment described above, the invention achieves the following advantages: (1) As in Fig. As shown in Figures 8 to 10, when the user steps on the footboard 30, the shock absorbing block 40 is compressed and deformed by the instantaneous downward force of the footboard 30. First, the positions of the two central mounting holes 42 are compressed, and then the outwardly curved arcuate top surface 411 and bottom surface 412 are gradually and simultaneously compressed, so that the top and bottom surfaces are evenly stressed during compression and are less likely to bend and twist. At the same time, the inwardly curved arcuate left side 413 and right side 414 are compressed and stretched outward, so that the left and right sides are evenly stressed and less likely to bend and twist. (2) Continuing the description in the preceding paragraph (1): When the shock absorbing block 40 is continuously subjected to a stronger downward pressure by the footboard 30 and is compressed and deformed until the footboard 30 is pressed downward more strongly, as in Fig. As shown in Figure 10, the outwardly curved arcuate top surface 411 and bottom surface 412 and the inwardly curved arcuate left side 413 and right side 414 form an approximately rectangular shape, with the left side 413 and right side 414 being in the shape of a vertical straight line, so that the shock absorbing block 40 exhibits the maximum supporting force. At this time, the top surface 411, bottom surface 412, left side 413, and right side 414 are subjected to the maximum bending force against the spring force, and a restoring force occurs at the same time. When the user's foot momentarily leaves the footboard 30 and the pressure on the footboard 30 momentarily disappears, the top surface 411 and bottom surface 412, as well as the left and right sides 413 and 414 of the shock absorbing block 40, quickly recover and return to their original starting positions. They are less likely to deform during repeated use than conventional shock absorbing blocks with the same arc shape (e.g., hollow circle) or straight cylindrical shape. Therefore, the shock absorbing block 40 of the present invention exhibits better wear resilience and recovery performance during repeated long-term use, offering the advantage of a longer service life. (3) If the user wants to adjust the shock absorption effect of the footboard 30, the number of mounted shock absorption blocks 40 can be increased or reduced, or the composition of the plastic used to manufacture the shock absorption blocks 40 can be changed to achieve different softness and elasticity. (4) When assembling the shock absorbing block 40 as shown in Fig. As shown in Figure 11, the blade of the screwdriver 60 and a screw 61 can be passed through the larger-diameter mounting hole 42 of the top surface of the shock absorbing block 40, allowing the screw 61 to be simultaneously screwed into the mounting hole 42 of the bottom surface of the shock absorbing block 40 and the support member 20, so that the structure of the shock absorbing block 40 does not interfere with the connection of the bottom surface of the shock absorbing block 40 and the support member 20. Therefore, the invention also provides convenient assembly. List of reference symbols

[0011] (State of the art) 1 frame 2 running boards 3 volumes 4 screw 5 Shock absorption block (the invention) 10 frames 20 support element 30 running board 40 shock absorption block 41 ring bodies 411 top 412 subpage 413 left side 414 right side 415 outwardly curved corner 42 mounting hole 60 screwdrivers 61 Screw 62 screw 63 U-shaped mounting plate 64 screw hole A wall thickness BB outer diameter CC outer diameter DD axial length

Claims

[1] Shock absorption and buffer device for treadmill with better efficiency (2), comprising a frame (10); a plurality of support elements (20) fixed at intervals to the two inner sides of the frame (10); a running board (30) consisting of a composite wood board; and a plurality of shock absorbing blocks (40) made of elastic plastic and having the shape of a quadrangular ring body (41) having an upper side (411), a lower side (412), a left side (413), and a right side (414), wherein the upper side (411), the lower side (412), the left side (413), and the right side (414) are connected to one another by a plurality of outwardly curved corners (415), wherein the upper side (411) and the lower side (412) are each provided with a fastening hole (42), and their cross sections have an outwardly curved arc shape, while the cross sections of the left side (413) and the right side (414) have an inwardly curved arc shape, wherein the lower side (412) is fastened to the upper side of the support element (20), and the upper side (411) is fastened to the running board (30), and the underside of the running board (30) supports upwards,wherein when the footboard (30) is pressed, the top side (411) and the bottom side (412) of the shock absorbing block (40) are compressed, while at the same time the left side (413) and the right side (414) are compressed and stretch outwards. [2] Shock absorbing and buffering device for treadmill with better efficiency (2) according to claim 1, characterized by that the underside of the shock absorbing block (40) is fixed to the top of the support element (20) by a screw (61). [3] Shock absorbing and buffering device for treadmill with better efficiency (2) according to claim 1, characterized by that the top of the shock absorbing block (40) is attached to the underside of the footboard (30) by a screw (62) and a U-shaped fastening plate (63). [4] Shock absorbing and buffering device for treadmill with better efficiency (1) according to claim 1, characterized bythat the diameter of the mounting hole (42) of the top of the shock absorbing block (40) is larger than the diameter of the mounting hole (42) of the bottom of the shock absorbing block (40). [5] Shock absorbing and buffering device for treadmill with better efficiency (1) according to claim 1, characterized by that the wall thickness (A), the maximum outer diameter (BB) of the longitudinal section, the maximum outer diameter of the cross section (CC) and the axial length (DD) of the shock absorbing block (40) are 3.5 to 6.5 mm, 25 to 45 mm, 20 to 30 mm and 20 to 30 mm.

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