Folding treadmill

Abstract

The utility model discloses a folding treadmill which comprises a foldable treadmill platform, the treadmill platform comprises a middle frame assembly and a rear frame assembly, and the middle frame assembly and the rear frame assembly are hinged through a hinge assembly; a first abutting block is arranged on the side, close to the rear frame assembly, of the middle frame assembly, a second abutting block is arranged on the side, close to the middle frame assembly, of the rear frame assembly, a gap is formed between the middle frame assembly and the rear frame assembly after the treadmill is opened, and the first abutting block and the second abutting block abut against each other at the gap position. The first abutting block and the second abutting block extrude each other in the transverse direction, and downward impact force is converted into transverse extrusion force. When the treadmill is used, the treadmill table cannot deform and retract, foot feelings such as offset and the like are avoided, meanwhile, the treadmill table can be protected, the reliability of the treadmill is improved, and the service life of the treadmill is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment, and in particular to a folding treadmill. Background Technology

[0002] As living standards continue to improve, people are paying more and more attention to physical exercise, and running is the simplest and most effective way to stay fit, making treadmills increasingly popular. For easier storage, some users choose foldable treadmills, which can be folded for storage to save space.

[0003] Currently, there are very few treadmills on the market with a folding running platform. This is because, in order to ensure the precision of the running platform, most running platforms are made of cast aluminum, which is expensive and involves even higher mold costs. Secondly, there are usually unevenness or gaps at the folding point of the running platform, resulting in a poor foot feel and a poor customer experience. Utility Model Content

[0004] This invention provides a folding treadmill to solve the problem that existing folding treadmills often have unevenness or gaps at the folding point. The specific technical solution is as follows:

[0005] A folding treadmill includes a foldable running platform. The running platform includes a middle frame assembly and a rear frame assembly, which are hinged together by a hinge assembly. A first abutment block is provided on the side of the middle frame assembly near the rear frame assembly, and a second abutment block is provided on the side of the rear frame assembly near the middle frame assembly. When the running platform is opened, a gap is formed between the middle frame assembly and the rear frame assembly. The first abutment block and the second abutment block abut against each other at the gap. When the running platform is subjected to a downward impact force, the first abutment block and the second abutment block compress against each other in the lateral direction, converting the downward impact force into a lateral compressive force.

[0006] Furthermore, both the first abutting block and the second abutting block are stepped structures including convex and concave surfaces, and the convex surface of the first abutting block abuts against the concave surface of the second abutting block, and the convex surface of the second abutting block abuts against the concave surface of the first abutting block.

[0007] Furthermore, the upper surfaces of the first and second abutment blocks are approximately flush with the rotation center of the hinge assembly to avoid interference between the first and second abutment blocks when the running platform is opened or folded.

[0008] Furthermore, the height of the step where the convex surface of the first abutting block and the second abutting block are located is shorter than the height of the step where the concave surface is located, so that when the first abutting block and the second abutting block abut against each other, there is a gap in the vertical direction between the step where the convex surface of the first abutting block and the step where the convex surface of the second abutting block are located.

[0009] Furthermore, after the treadmill is opened, the gap between the middle frame assembly and the rear frame assembly is 15mm-30mm.

[0010] Furthermore, the width of the first abutting block and the second abutting block is 10mm-30mm, the height is 20mm-40mm, the height difference between the step where the concave surface is located and the step where the convex surface is located is 2mm-5mm, and the thickness difference between the step where the convex surface is located and the step where the concave surface is located is 0.5mm-3mm.

[0011] Furthermore, the first abutment block is disposed on the edge of the middle frame assembly near the rear frame assembly, and the second abutment block is disposed on the edge of the rear frame assembly near the middle frame assembly, so that when the running platform is opened, the first abutment block and the second abutment block are accommodated in the gap between the middle frame assembly and the rear frame assembly.

[0012] Furthermore, there are two first abutting blocks and two second abutting blocks. The first abutting blocks are symmetrically distributed on both sides of the middle frame assembly near the border of the rear frame assembly, and the second abutting blocks are symmetrically distributed on both sides of the rear frame assembly near the border of the middle frame assembly.

[0013] Furthermore, the middle frame assembly includes a middle frame structure composed of four interconnected side frames, with a middle frame running plate mounted on the upper surface of the middle frame structure. Front mounting brackets extend forward from the side frames on both sides of the middle frame assembly, and front rollers are mounted on the front mounting brackets. The rear frame assembly includes a rear frame structure composed of four interconnected side frames, with a rear frame running plate mounted on the upper surface of the rear frame structure. Rear mounting brackets extend backward from the side frames on both sides of the rear frame assembly, and rear rollers are mounted on the rear mounting brackets. A running belt is installed between the front rollers and the rear rollers.

[0014] Furthermore, the front end of the front roller also includes a front frame assembly connected to the front mounting bracket, the front frame assembly being detachably mounted on the front mounting bracket.

[0015] The folding treadmill provided by this utility model features small abutment blocks between the middle frame assembly and the rear frame assembly. Due to the small area of ​​these two abutment blocks, compared to a larger mounting frame, it is easier to ensure processing and installation accuracy, thus effectively guaranteeing a tight fit between the first and second abutment blocks. While ensuring the fitting accuracy between the middle and rear frame assemblies, this significantly reduces the overall processing and material costs of the running platform. Furthermore, the two abutment blocks, which abut against each other in the lateral direction, can also convert downward impact forces into lateral compressive forces when the running platform is subjected to downward impact. This prevents the running platform from deforming and contracting, eliminating any discontinuity in the foot feel, and also protects the running platform, improving the reliability and lifespan of the treadmill. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the folding treadmill after it has been opened according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the folding treadmill after it has been folded according to an embodiment of the present invention;

[0018] Figure 3 This is an exploded view of the folding treadmill according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram showing the connection relationship between the front frame assembly and the middle frame assembly in an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram showing the connection relationship between the middle frame component and the rear frame component in an embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram showing the mutual contact of the first and second abutting blocks in an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram showing the force relationship between the first abutting block and the second abutting block in an embodiment of the present utility model. Detailed Implementation

[0023] To better understand the purpose, function, and specific design of this utility model, the folding treadmill of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] like Figures 1-3 As shown, the folding treadmill of this utility model includes a foldable running platform, which includes a front frame assembly 5, a middle frame assembly 3, and a rear frame assembly 4. A front roller 31 is provided at the front end of the middle frame assembly 3, and a rear roller 41 is provided at the rear end of the rear frame assembly 4. A running belt 6 is disposed between the front roller 31 and the rear roller 41. The front frame assembly 5 is connected to the middle frame assembly 3, and a front roller drive device 7 is provided between the front frame assembly 5 and the middle frame assembly 3 to drive the front roller 31 to rotate, thereby driving the running belt 6 to rotate on the running platform.

[0025] Furthermore, a hinge component 2 is provided between the middle frame assembly 3 and the rear frame assembly 4, and the middle frame assembly 3 and the rear frame assembly 4 are hinged together by the hinge component 2. In this embodiment of the present invention, the rear frame assembly 4 can be folded and opened around the rotation center of the hinge component 2, thereby realizing the folding of the running platform.

[0026] Furthermore, a first abutting block 11 is provided on the side of the middle frame assembly 3 near the rear frame assembly 4, and a second abutting block 12 is provided on the side of the rear frame assembly 4 near the middle frame assembly 3. After the running platform is opened, a gap is formed between the middle frame assembly 3 and the rear frame assembly 4. The first abutting block 11 and the second abutting block 12 abut against each other at the gap position. As shown in the figure, the first abutting block 11 and the second abutting block 12 have the same height and abut against each other in the lateral direction of the running platform.

[0027] Compared to traditional foldable treadmills, this embodiment of the invention further widens the gap between the middle frame assembly 3 and the rear frame assembly 4, preventing collisions between them during running. Small abutment blocks are placed between the gaps. Due to the small area of ​​the two abutment blocks, compared to a large mounting frame, it is easier to ensure processing and installation accuracy, thus effectively ensuring a tight fit between the first abutment block 11 and the second abutment block 12. While maintaining the fitting accuracy between the middle frame assembly 3 and the rear frame assembly 4, this significantly reduces the processing and material costs of the entire running platform. Furthermore, when the running platform is subjected to a downward impact, the two abutment blocks 11 and 12 can compress each other in the lateral direction, converting the downward impact force into a lateral compressive force. At this time, the two running platforms will not deform or shrink inward, thus eliminating any discontinuity in the foot feel. On the other hand, the conversion of vertical impact force into lateral compressive force protects the running platform, improving the reliability and service life of the treadmill.

[0028] Specifically, such as Figure 7 As shown, when moving on the running board, stepping down on the running board will generate downward impact forces on the middle frame assembly 3 and the rear frame assembly 4 successively. At this time, since the middle frame assembly 3 and the rear frame assembly 4 are rotatably connected, they will inevitably generate forces around their center, such as... Figure 7 The deformation direction is inward rotation, as shown. However, because the first abutment block 11 and the second abutment block 12 press against each other in the lateral direction along the deformation trend path, the deformation direction of the middle frame assembly 3 and the rear frame assembly 4 inward rotation is canceled out, and is converted into the compressive force between the contact surfaces of the two abutment blocks, that is, the compressive force in the lateral direction. Since the two abutment blocks have a tight fit relationship like a mortise and tenon structure, the two abutment blocks will not have relative movement due to the compressive force, thus ensuring the stability of the running board.

[0029] In an optional embodiment of this utility model, the first abutting block 11 and the second abutting block 12 are both small metal blocks that have been precision machined. The two blocks can have the same shape. In this case, the first abutting block 11 and the second abutting block 12 abut against each other at the bending center of the running plate. They can also have a difference in thickness. In this case, the position of the mutual pressing force of the first abutting block 11 and the second abutting block 12 is deviated from the bending center of the running plate. The downward impact force can also be converted into a lateral pressing force.

[0030] like Figure 5 , Figure 6 As shown, in a preferred embodiment of this utility model, the first abutting block 11 and the second abutting block 12 are stepped structures including convex and concave surfaces, and the convex surface of the first abutting block 11 abuts against the concave surface of the second abutting block 12, and the convex surface of the second abutting block 12 abuts against the concave surface of the first abutting block 11. At this time, the fit between the two abutting blocks is similar to a mortise and tenon structure. Through the mutual fit of the convex and concave surfaces, the stress points of the first abutting block 11 and the second abutting block 12 can be misaligned with the bending center of the running board in different directions, further dispersing the compressive force on the first abutting block 11 and the second abutting block 12, and thus having better resistance to deformation.

[0031] Furthermore, the height of the step where the convex surface of the first abutment block 11 and the second abutment block 12 is located is shorter than the height of the step where the concave surface is located, so that when the first abutment block 11 and the second abutment block 12 abut against each other, there is a gap between the step where the convex surface of the first abutment block 11 is located and the step where the convex surface of the second abutment block 12 is located. This ensures that the two abutment blocks will not interfere with each other during the folding and unfolding of the running board, and ensures a tight fit between the two abutment blocks. It should be noted that in this embodiment of the present invention, the first abutment block 11 and the second abutment block 12 can be step structures with completely identical structures, or they can be appropriately adjusted according to actual needs, and their structures do not have to be completely identical.

[0032] In a preferred embodiment of this invention, after the running platform is opened, the gap between the middle frame assembly and the rear frame assembly is 15mm-30mm. The first abutting block 11 and the second abutting block 12 abut against each other, matching the gap between the middle frame assembly and the rear frame assembly.

[0033] Furthermore, the first abutment block 11 and the second abutment block 12 are identical in size, with a width of 10mm-30mm and a height of 20mm-40mm. The height difference between the concave and convex steps is 2mm-5mm, and the thickness difference is 0.5mm-3mm. The height difference ensures that when the first abutment block 11 and the second abutment block 12 abut against each other, there is a gap in the height direction between the concave and convex steps. The thickness difference ensures that when the first abutment block 11 and the second abutment block 12 abut against each other, there are two abutment surfaces offset from the center line. The width direction corresponds to the left-right direction of the running platform, the thickness direction to the front-back direction, and the height direction to the up-down direction.

[0034] Furthermore, in a specific embodiment of this utility model, the gap between the middle frame assembly and the rear frame assembly is 22mm, the step where the convex surface is located has a width of 20mm, a height of 12mm, and a thickness of 10.8mm, and the step where the concave surface is located has a width of 20mm, a height of 15mm, and a thickness of 9.3mm.

[0035] Furthermore, in this embodiment of the invention, the middle frame assembly 3 includes a middle frame structure composed of four interconnected side frames, and the middle frame running board is mounted on the upper surface of the middle frame frame structure; the rear frame assembly 4 includes a rear frame structure composed of four interconnected side frames, and the rear frame running board is mounted on the upper surface of the rear frame frame structure. Supporting the running board with the four side frames significantly reduces the overall weight of the running board, making the treadmill lighter and easier to transport and fold.

[0036] Furthermore, such as Figure 4 As shown, the treadmill provided by this utility model also includes a front frame assembly 5. Specifically, the side frames of the middle frame assembly 3 extend forward to form a front mounting bracket, on which a front roller 31 is provided; the side frames of the rear frame assembly 4 extend backward to form a rear mounting bracket, on which a rear roller 41 is provided; a running belt 6 is installed between the front roller 31 and the rear roller 41.

[0037] Furthermore, a front roller drive device 7 is also installed on one side of the front mounting bracket extending forward from the front edge of the front roller 31 and the side edges of the middle frame assembly 3. The front roller drive device 7 can drive the front roller 31 to rotate, thereby driving the entire running belt 6 to rotate.

[0038] In a specific embodiment of this utility model, the front roller drive device 7 is a drive motor, and a drive shaft is provided on the front roller 31. The rotating part of the drive motor and the drive shaft are connected by a belt, and the belt drives the drive shaft to rotate, thereby driving the front roller 31 to rotate.

[0039] Furthermore, a front mounting head is connected to the front mounting bracket at the front end of the front roller drive device 7. A front frame assembly 5 is mounted on the front mounting head, and the front frame assembly 5 is detachably mounted on the front mounting bracket. The front frame assembly 5 includes a horizontal frame located at the front end of the running board, and a bracket 52 connected to the crossbeam. The bracket 52 extends towards the middle frame assembly 3 to support the front roller drive device 7. In this embodiment of the invention, the front frame assembly 5 is detachably mounted on the front mounting bracket, which facilitates the installation of the running belt. The running board structure provided by this invention supports the front roller drive device 7 only through the frame, further reducing the material usage of the treadmill and making the treadmill more portable.

[0040] Furthermore, in a specific embodiment of this utility model, the front frame assembly 5 has two threaded holes 51 on each side, and the middle frame assembly 3 has two through holes 32 on each side, so that the front frame assembly 5 and the rear frame assembly 4 can be connected and fixed by bolts.

[0041] Furthermore, the hinge assembly 2 includes a first hinge portion 21 and a second hinge portion 22 that are hinged together; grooves are formed on the side frames of the middle frame assembly 3, and L-shaped gaskets are installed in the grooves to form a front hinge groove, in which the first hinge portion 21 is disposed. Grooves are formed on the side frames of the rear frame assembly 4, and L-shaped gaskets are installed in the grooves to form a rear hinge groove, in which the second hinge portion 22 is disposed in the front hinge groove. The hinge assembly 2 rotates around its hinge axis, thereby realizing the folding of the middle frame assembly 3 and the rear frame assembly 4. In this embodiment of the present invention, the hinge assembly 2 is disposed in the groove, which can keep the upper surface of the hinge assembly 2 roughly flush with the upper surface of the running board, avoiding the impact of the hinge assembly 2 being too high or too low on the running belt 6.

[0042] Furthermore, the first abutment block 11 is disposed on the side of the middle frame assembly 3 near the rear frame assembly 4, and the second abutment block 12 is installed on the side of the rear frame assembly 4 near the middle frame assembly 3, so that when the running platform is opened, the first abutment block 11 and the second abutment block 12 are accommodated in the gap between the middle frame assembly 3 and the rear frame assembly 4. The first abutment block 11 is disposed near the first hinge portion 21, and the second abutment block 12 is disposed near the second hinge portion 22. Correspondingly, the running platform is provided with notches for accommodating the hinge assembly 2 and the first abutment block 11 and the second abutment block 12, so that the rotation center of the hinge assembly 2 is approximately flush with the upper surface of the running platform, and the upper surfaces of the first abutment block 11 and the second abutment block 12 are approximately flush with the rotation center of the hinge assembly 2. This can prevent interference between the first abutment block 11 and the second abutment block 12 when the running platform is folded.

[0043] Furthermore, the width of the step where the convex surface of the first abutting block 11 and the second abutting block 12 is located is shorter than the width of the step where the concave surface is located, so that when the first abutting block 11 and the second abutting block 12 abut against each other, a gap is maintained between the step where the convex surface of the first abutting block 11 is located and the step where the convex surface of the second abutting block is located. This also avoids interference between the first abutting block 11 and the second abutting block 12.

[0044] Compared to traditional foldable treadmills, this embodiment of the invention features smaller abutment blocks between the middle frame assembly 3 and the rear frame assembly 4. Due to the smaller area of ​​these two abutment blocks, it is easier to ensure processing and installation accuracy compared to a larger mounting frame. This effectively guarantees a tight fit between the first abutment block 11 and the second abutment block 12. While ensuring the fit accuracy between the middle frame assembly 3 and the rear frame assembly 4, this significantly reduces the processing and material costs of the entire running platform. Furthermore, when the running platform is subjected to a downward impact, the two abutment blocks 11 and 12 can press against each other in the lateral direction, converting the downward impact force into a lateral compressive force. This prevents the running platform from deforming and collapsing, thus eliminating any treadmill-like unevenness. On the other hand, the conversion of vertical impact force into lateral compressive force protects the running platform, improving the reliability and lifespan of the treadmill.

[0045] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A foldable treadmill characterized by, The folding treadmill comprises a middle frame assembly and a rear frame assembly, and the middle frame assembly is hinged to the rear frame assembly through a hinge assembly; a first abutting block is arranged on the side of the middle frame assembly close to the rear frame assembly, and a second abutting block is arranged on the side of the rear frame assembly close to the middle frame assembly; a gap is formed between the middle frame assembly and the rear frame assembly when the treadmill is opened, and the first abutting block and the second abutting block abut each other at the position of the gap; when the treadmill is impacted by a downward force, the first abutting block and the second abutting block are pressed in the transverse direction to convert the downward impact force into a transverse pressing force.

2. The folding treadmill of claim 1, wherein, The first abutting block and the second abutting block are both stepped structures comprising convex surfaces and concave surfaces, and the convex surface of the first abutting block and the concave surface of the second abutting block abut each other, and the convex surface of the second abutting block and the concave surface of the first abutting block abut each other.

3. The folding treadmill of claim 2, wherein, The upper surfaces of the first abutting block and the second abutting block are substantially flush with the center of rotation of the hinge assembly, so as to avoid interference between the first abutting block and the second abutting block when the treadmill is opened or folded.

4. The folding treadmill of claim 2 or 3, wherein, The height of the step where the convex surface of the first abutting block is located is shorter than the height of the step where the concave surface is located, so that when the first abutting block and the second abutting block abut each other, the step where the convex surface of the first abutting block is located and the step where the convex surface of the second abutting block is located keep a gap in the vertical direction.

5. The folding treadmill of any one of claims 1-3, wherein, The gap between the middle frame assembly and the rear frame assembly is 15-30 mm when the treadmill is opened.

6. The folding treadmill of any one of claims 1-3, wherein, The width of the first abutting block and the second abutting block is 10-30 mm, the height is 20-40 mm, the height difference between the step where the convex surface is located and the step where the concave surface is located is 2-5 mm, and the thickness difference between the step where the convex surface is located and the step where the concave surface is located is 0.5-3 mm.

7. The folding treadmill of any one of claims 1-3, wherein, The first abutting block is arranged on the frame of the middle frame assembly close to the rear frame assembly, and the second abutting block is arranged on the frame of the rear frame assembly close to the middle frame assembly, so that the first abutting block and the second abutting block are accommodated in the gap between the middle frame assembly and the rear frame assembly when the treadmill is opened.

8. The folding treadmill of claim 5 wherein, The first abutting block and the second abutting block are both two, and the first abutting blocks are symmetrically distributed on both sides of the frame of the middle frame assembly close to the rear frame assembly, and the second abutting blocks are symmetrically distributed on both sides of the frame of the rear frame assembly close to the middle frame assembly.

9. The folding treadmill of claim 5 wherein, The middle frame assembly comprises a middle frame structure composed of four frames connected to each other, and a middle frame running board is arranged on the upper surface of the middle frame structure; the frames on both sides of the middle frame assembly extend forward to form front mounting supports, and front rollers are arranged on the front mounting supports; the rear frame assembly comprises a rear frame structure composed of four frames connected to each other, and a rear frame running board is arranged on the upper surface of the rear frame structure; the frames on both sides of the rear frame assembly extend backward to form rear mounting supports, and rear rollers are arranged on the rear mounting supports; and a running belt is arranged between the front rollers and the rear rollers.

10. The folding treadmill of claim 9, wherein, The front end of the front roller further comprises a front frame assembly connected to the front mounting support, and the front frame assembly is detachably mounted on the front mounting support.

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