A folding treadmill

Abstract

The utility model discloses a folding treadmill, including front frame subassembly, middle frame subassembly and folding unlocking mechanism, and folding unlocking mechanism includes the ejector assembly of middle frame subassembly front end, and the ejector assembly includes the pin and elastic piece, and the elastic piece provides the elastic force of pin close to front frame subassembly, and folding unlocking mechanism still includes the horizontal fixed hole and folding fixed hole of setting up on front frame subassembly, and the front frame subassembly and middle frame subassembly are unfolded and are placed when pin is connected with horizontal fixed hole, and the front frame subassembly and middle frame subassembly are folded and are placed when pin is connected with folding fixed hole, and the lateral connection of pin has the connecting plate, and the connecting plate extends to the direction away from front frame subassembly, and the pulling connecting plate can make pin move to the direction away from front frame subassembly to make pin pull out from horizontal fixed hole or folding fixed hole, and the front frame subassembly and middle frame subassembly can rotate relative to the rotation axis. The utility model makes the folding treadmill occupy smaller volume, and the storage of treadmill is convenient.

Description

Technical Field

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

[0002] Treadmills are very popular fitness equipment, and more and more families want to own a home treadmill so they can achieve their fitness goals at home. However, treadmills generally take up a lot of space, making them difficult to store. As a result, more and more folding treadmills have appeared on the market. In current folding treadmills, the front and middle frames are usually integrated, and folding is achieved by folding the middle and rear frames of the running platform. Even after folding, the running platform and the handrails and uprights are still perpendicular, making the treadmill still take up a lot of space. The entire treadmill cannot be stored in a very small space, which affects the user experience. Utility Model Content

[0003] The purpose of this utility model is to provide a folding treadmill to solve the problem that existing treadmills still occupy a large area after folding and cannot be stored in a very small space. The specific technical solution is as follows:

[0004] This utility model provides a folding treadmill, including a front frame assembly, a middle frame assembly, and a folding unlocking mechanism. The folding unlocking mechanism includes a spring pin assembly at the front end of the middle frame assembly. The spring pin assembly includes a pin and an elastic element. The pin is located at the front edge of the middle frame assembly. The elastic element abuts against the pin behind the pin, providing the pin with elastic force to protrude beyond the front edge of the middle frame assembly and approach the front frame assembly. The folding unlocking mechanism also includes a flat fixing hole parallel to the plane of the front frame assembly and a folding fixing hole perpendicular to the plane of the front frame assembly. When the pin is connected to the flat fixing hole, the front frame assembly and the middle frame assembly are unfolded. When the pin is connected to the folding fixing hole, the front frame assembly and the middle frame assembly are folded. A connecting plate is connected to the side of the pin. The connecting plate extends away from the front frame assembly. Pulling the connecting plate can move the pin away from the front frame assembly, so that the pin can be pulled out from the flat fixing hole or the folding fixing hole. The front frame assembly and the middle frame assembly can be rotated by a rotating shaft.

[0005] Furthermore, the spring pin assembly also includes a sleeve fixedly connected to the middle frame assembly. The sleeve contains a spring and a pin. The two ends of the spring abut against the bottom ends of the pin and the sleeve, respectively. The front edge of the sleeve is positioned close to the front edge of the middle frame assembly so that the pin protrudes beyond the front edge of the middle frame assembly under the action of the spring force. The sleeve is provided with a pull groove extending along the axial direction of the pin. The connecting plate passes through the pull groove and connects to the pin in the sleeve.

[0006] Furthermore, the connecting plate includes a first connecting plate and a second connecting plate respectively connected to both sides of the pin, with a clearance hole formed between the first connecting plate and the second connecting plate to allow the rotating shaft to pass through the clearance hole. The connecting plate also includes a pull plate, with the ends of the first connecting plate and the second connecting plate connected to each other and connected to the pull plate, the pull plate extending away from the front frame assembly.

[0007] Furthermore, the mid-frame assembly is provided with a long groove, and the pull plate bends into the long groove towards the center of the mid-frame assembly to enter the inner side of the frame of the mid-frame assembly.

[0008] Furthermore, a middle frame fixing seat is provided on the middle frame assembly. The middle frame fixing seat includes a fixing plate and a middle frame connecting seat. The middle frame connecting seat is fixedly connected to the upper or lower side of the middle frame assembly frame. The fixing plate is perpendicular to the middle frame connecting seat and is laterally positioned against the front end of the middle frame assembly. A sleeve is fixedly connected to the front end of the fixing plate. A through hole for the rotating shaft to pass through is provided in the middle of the fixing plate. An elongated groove is provided on the rear side of the through hole.

[0009] Furthermore, the rear end of the connecting plate is also connected to a fine-tuning line, the other end of which extends to the rear end of the frame of the middle frame component. The rear end of the middle frame component is provided with a handle connected to the fine-tuning line. Pulling the handle can cause the fine-tuning line to move the connecting plate.

[0010] Furthermore, the folding treadmill is equipped with folding unlocking mechanisms on both sides. The handle includes a crossbar extending to both sides of the middle frame assembly and a handle connected to the crossbar. Each end of the crossbar is connected to a fine-tuning line. Pulling the handle causes the fine-tuning lines at both ends of the crossbar to move synchronously.

[0011] Furthermore, the folding unlocking mechanism also includes a limiting block assembly. One end of the limiting block assembly is connected to the end of the handle, and the other end is rotatably connected to the bottom surface of the middle frame assembly. A first connecting hole is provided in the middle area of ​​the limiting block assembly, and a fine-tuning line is connected to the first connecting hole. Pulling the handle causes the limiting block assembly to rotate on the bottom surface of the middle frame assembly, so that the first connecting hole drives the fine-tuning line to move away from the front frame assembly.

[0012] Furthermore, the limiting block assembly is a bent structure connected at a preset angle. One end of the bent structure is rotatably connected to the middle frame assembly, and the other end of the bent structure is provided with a second connecting hole. A first limiting block is provided laterally to the second connecting hole. A limiting connecting shaft is provided at the end of the handle crossbar, and a second limiting block is provided laterally to the limiting connecting shaft. The limiting connecting shaft is connected to the second connecting hole, and the first limiting block and the second limiting block abut against each other.

[0013] Furthermore, the folding unlocking mechanism also includes a fine-tuning line connector, which includes a connecting base and a support base protruding from the connecting base. The connecting base is connected to the bottom surface of the middle frame assembly, and the support base is provided with a support hole. The height of the support hole from the bottom surface of the middle frame assembly is the same as the height of the first connecting hole of the limiting block assembly from the bottom surface of the middle frame assembly. The fine-tuning line is connected in the support hole so that the fine-tuning line maintains a preset distance from the bottom surface of the middle frame assembly.

[0014] Furthermore, a pivot connection hole is provided on the side of the connecting base, and one end of the bending structure of the limiting block assembly is rotatably connected to the pivot connection hole.

[0015] Furthermore, the folding treadmill also includes a rear frame assembly, which is connected to the middle frame assembly via a hinge, allowing the rear frame assembly and the middle frame assembly to be folded or unfolded.

[0016] The folding treadmill of this invention has the following advantages:

[0017] 1. The front frame and middle frame are set separately, and the folding and unfolding of the front frame and middle frame can be realized through the folding unlocking mechanism, so that the treadmill occupies a smaller volume after folding and is easier to store.

[0018] 2. By using the spring-loaded pin assembly at the front end of the middle frame assembly and the flat fixing holes and folding fixing holes on the front frame assembly, the middle frame assembly and the front frame assembly can be fixed in different states. The overall structure is simple and the operation is reliable.

[0019] 3. The pull plate bends towards the center of the middle frame assembly, and a long slot is set on the middle frame assembly, which allows the pull plate to enter the long slot, thereby hiding the pull plate inside the middle frame assembly and improving the overall aesthetics of the treadmill.

[0020] 4. The fine-tuning line extends the unlocking control to the end of the mid-frame component, and a pull handle is set at the end, which makes it easier for users to perform smooth unlocking operations on the mid-frame component and the front frame component, improving the user experience;

[0021] 5. The connection between the limit block component and the handle is set so that users can unlock the spring pin component by sliding the handle or rotating the handle, which adapts to the usage habits of different users and further improves the user experience. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the treadmill unfolded according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the treadmill rear frame assembly and middle frame assembly folded according to an embodiment of the present utility model.

[0024] Figure 3 This is a schematic diagram of the treadmill in a three-fold configuration according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram showing the connection relationship between the middle frame component and the front frame component in an embodiment of this utility model.

[0026] Figure 5 This is an exploded view showing the connection relationship between the middle frame component and the front frame component in an embodiment of this utility model.

[0027] Figure 6 This is an embodiment of the present utility model. Figure 5 An enlarged view of region A within the middle circle.

[0028] Figure 7 This is a schematic diagram of the front frame assembly according to an embodiment of the present utility model.

[0029] Figure 8 This is an embodiment of the present utility model. Figure 7 An enlarged view of region B within the middle circle.

[0030] Figure 9 This is a structural schematic diagram of the middle frame fixing seat according to an embodiment of the present utility model.

[0031] Figure 10 This is an exploded view of the middle frame fixing seat according to an embodiment of the present utility model.

[0032] Figure 11 This is a schematic diagram of the folding unlocking mechanism according to an embodiment of the present invention.

[0033] Figure 12 This is a schematic diagram showing the structural relationship between the pull handle and the fine-tuning line on the middle frame assembly of this utility model embodiment.

[0034] Figure 13 This is a schematic diagram of the structure of the limiting block assembly according to an embodiment of the present utility model.

[0035] Figure 14 This is a schematic diagram of the structural relationship of the fine-tuning line fixing seat according to an embodiment of the present utility model.

[0036] Figure 15 This is a schematic diagram of the handle structure according to an embodiment of the present utility model.

[0037] Figure 16 This is a schematic diagram showing the relationship between the fine-tuning line and the handle's movement when rotating the handle according to an embodiment of this utility model.

[0038] Figure 17 This is an embodiment of the present utility model. Figure 16 An enlarged view of the area C circled in the middle.

[0039] Figure 18This is a schematic diagram showing the relationship between the fine-tuning line and the handle's movement when the handle is moved in accordance with an embodiment of this utility model.

[0040] Figure 19 This is an embodiment of the present utility model. Figure 18 An enlarged schematic diagram of the central circle region D.

[0041] Figure 20 This is a schematic diagram of the hinge assembly according to an embodiment of the present utility model.

[0042] Figure 21 This is a schematic diagram of the hinge assembly folded at 90° according to an embodiment of the present invention.

[0043] Figure 22 This is a schematic diagram of the hinge assembly after it is fully folded according to an embodiment of the present invention. Detailed Implementation

[0044] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0045] The folding treadmill provided in this embodiment of the utility model is as follows: Figures 1-3 As shown, it specifically includes a front frame assembly 02, a middle frame assembly 01, a rear frame assembly 03, and a column 04 perpendicularly connected to the front frame assembly 02, wherein... Figure 1 This is the treadmill when fully extended. Figure 2 This is the state after the rear frame component 03 and the middle frame component 01 are folded. Figure 3 The treadmill is in the state after the middle frame assembly 01 and the front frame assembly 02 are folded together. At this time, the middle frame assembly 01 and the upright column 04 are parallel to each other. The space occupied by the treadmill is greatly reduced. The front frame assembly 02 and the middle frame assembly 01 of the treadmill provided in this embodiment are foldable. The treadmill can be placed upright by the three folds. The treadmill's footprint is greatly reduced when it is stored. Compared with the solution of folding the handrail 2 downward, the folding action of this utility model is more continuous and easier to operate.

[0046] Understandably, in this embodiment of the present invention, the treadmill is transformed from a large three-dimensional volume to a smaller volume by folding the front frame and the running platform at a 90° angle. Therefore, in an optional embodiment of the present invention, the front frame assembly 02 and the running platform can be folded together as a whole. When the running platform is small, only the middle frame assembly 01 can be set. In this case, a good folding and storage effect can also be achieved.

[0047] Furthermore, referring to Figures 4-10The present invention implements the unfolding or folding of the front frame assembly 02 and the middle frame assembly 01 through a folding unlocking mechanism between the front frame assembly 02 and the middle frame assembly 01, and can be fixedly connected to each other when unfolded and folded, thereby improving the stability of the treadmill.

[0048] Furthermore, the folding unlocking mechanism provided in this embodiment includes a spring-loaded pin assembly 1 at the front end of the middle frame assembly 01. The spring-loaded pin assembly 1 includes a pin 11 and an elastic element. The pin 11 is located at the front edge of the middle frame assembly, and the elastic element abuts against the pin 11 behind it, providing the pin 11 with a spring force that protrudes beyond the front edge of the middle frame assembly 01 and approaches the front frame assembly 02. The folding unlocking mechanism also includes a connecting limiting structure 2 on the front frame assembly 02. The connecting limiting structure 2 specifically includes a flat fixing hole 21 parallel to the plane of the front frame assembly 02 and a folding fixing hole 22 perpendicular to the plane of the front frame assembly 02. In this embodiment, when the pin 11 is connected to the flat fixing hole 21, the front frame assembly 02 and the middle frame assembly 01 are placed parallel to each other, realizing the unfolding of the treadmill. When the pin 11 is connected to the folding fixing hole 22, the front frame assembly 02 and the middle frame assembly 01 are folded, realizing the folding of the treadmill.

[0049] Furthermore, in this embodiment of the invention, a connecting plate 12 is also laterally connected to the pin 11. The connecting plate 12 extends away from the front frame assembly 02. Pulling the connecting plate 12 can move the pin 11 away from the front frame assembly 02, so that the pin 11 can be pulled out from the flat fixing hole 21 or the folding fixing hole 22. The front frame assembly 02 and the middle frame assembly 01 can rotate relative to the rotation axis. Since the elastic element provides elastic force to the pin 11 near the front frame assembly 02, in the natural state, the pin 11 is held in the flat fixing hole 21 or the folding fixing hole 22, so that the middle frame assembly 01 and the front frame assembly 02 are maintained in a connected state. When it is necessary to change the state of the treadmill, by pulling the connecting plate 12, since the connecting plate 12 is connected to the pin 11, the pin 11 can resist the elastic force of the elastic element and be pulled out from the flat fixing hole 21 or the folding fixing hole 22, thereby unlocking the middle frame assembly 01 and the front frame assembly 02. At this time, it is possible to control the rotation between the middle frame assembly 01 and the front frame assembly 02 via the rotating shaft.

[0050] Furthermore, since the middle frame assembly 01 is provided with a front roller connecting the running belt, and the front roller's rotating shaft is connected to the middle frame assembly 01, in a preferred embodiment of this utility model, the front roller's rotating shaft is used as the rotation axis between the middle frame assembly 01 and the front frame assembly 02 to reduce the complexity of the treadmill's mechanical structure. It is understood that for certain requirements regarding folded positions, other points can also be set as rotation points between the middle frame assembly 01 and the front frame assembly 02. Therefore, the front roller's rotating shaft is not the only rotation axis between the middle frame assembly 01 and the front frame assembly 02. This utility model uniformly refers to the shafts set at the rotation points between the middle frame assembly 01 and the front frame assembly 02 as rotation axes.

[0051] Furthermore, referring to Figures 9-10 In one specific embodiment of this utility model, a middle frame fixing seat 19 is used to fix the spring pin assembly 1 to the side frame of the middle frame assembly 01. In other embodiments, the spring pin assembly 1 of this utility model can also be directly fixed to the side frame of the middle frame assembly 01.

[0052] Specifically, in this embodiment of the present invention, the spring pin assembly 1 further includes a sleeve 15 fixedly connected to the middle frame assembly 01. A spring and a pin 11 are provided inside the sleeve 15. The two ends of the spring abut against the bottom ends of the pin 11 and the sleeve 15, respectively. The front edge of the sleeve 15 is located close to the front edge of the middle frame assembly 01 so that the pin 11 protrudes from the front edge of the middle frame assembly 01 under the action of the spring force. A pull groove 16 extending along the axial direction of the pin 11 is provided on the side of the sleeve 15. The connecting plate 12 passes through the pull groove 16 and is connected to the pin 11 in the sleeve 15.

[0053] Furthermore, the connecting plate 12 includes a first connecting plate 131 and a second connecting plate 132 respectively connected to both sides of the pin 11. An avoidance hole is formed between the first connecting plate 131 and the second connecting plate 132 to allow the rotation shaft on the middle frame assembly 01 to pass through. The connecting plate 12 also includes a pull plate 14. The ends of the first connecting plate 131 and the second connecting plate 132 are connected to each other and connected to the pull plate 14. The pull plate 14 extends in a direction away from the front frame assembly 02.

[0054] Specifically, as shown in the attached diagram, the pin 11 has a threaded hole on its side for screw connection. Both the first connecting plate 131 and the second connecting plate 132 include side plates parallel to the two side planes of the sleeve 15. Each side plate also has a channel for screw connection. During the installation of the spring-loaded pin assembly 1, after the spring and pin 11 are sequentially placed inside the sleeve 15, the screws on both sides pass through the through holes on the side plates, the pull groove 16 on the sleeve 15, and then connect with the threaded hole on the pin 11. At this time, both the pin 11 and the spring are confined inside the sleeve 15. The spring force causes the pin 11 to move away from the bottom end of the sleeve 15. When the connecting plate 12 is pulled, the screw connecting the pin 11 drives the entire pin 11 to move closer to the bottom end of the sleeve 15.

[0055] Furthermore, in this embodiment of the present invention, the first connecting plate 131 and the second connecting plate 132 are connected to each other at their ends to form a U-shaped structure as shown in the attached figure. The first connecting plate 131 and the second connecting plate 132 of this U-shaped structure can not only be connected to the upper and lower sides of the sleeve 15 respectively, but also avoid the rotation axis on the middle frame assembly 01. In a specific embodiment of the present invention, the pull plate 14 can be connected to the bottom middle position of the U-shaped structure by screws, and the pull plate 14 is set closer to the inside of the middle frame assembly 01, so that an inwardly bent step is formed between the pull plate 14 and the first connecting plate 131 and the second connecting plate 132.

[0056] In other embodiments, the pull plate 14 is an integral structure with the first connecting plate 131 and the second connecting plate 132 of the U-shaped structure, making the whole structure Y-shaped. In this case, the pull plate 14 can be bent closer to the center of the middle frame assembly 01 by bending the pull plate 14 itself.

[0057] Specifically, in this embodiment of the invention, the middle frame assembly 01 is provided with an elongated groove 17, one end of which is close to the rotation axis, and the other end extends away from the front frame assembly 02; the pull plate 14 is bent into the elongated groove 17 towards the center of the middle frame assembly 01 to enter the inner side of the frame of the middle frame assembly 01. In this embodiment of the invention, by bending the pull plate 14 into the elongated groove 17, the entire pull plate 14 is inserted into the inner side of the frame of the middle frame assembly 01, improving the overall aesthetics of the treadmill.

[0058] Furthermore, in one embodiment of this utility model, the spring pin assembly 1 is connected to the middle frame via the middle frame fixing seat 19. Specifically, the middle frame fixing seat 19 includes a fixing plate and a middle frame connecting seat. The middle frame connecting seat is fixedly connected to the upper side of the middle frame assembly 01's frame. The fixing plate is perpendicular to the fixing plate and is laterally positioned against the front end of the middle frame assembly 01. The sleeve 15 is fixedly connected to the front end of the fixing plate. A through hole for the rotating shaft to pass through is provided in the middle of the fixing plate, and an elongated groove 17 is provided behind the through hole. This utility model fixes the spring pin assembly 1 to the middle frame via the middle frame fixing seat 19, enabling the folding of the middle frame and front frame without changing the original structure of the middle frame assembly 01, thus making the overall structure of the treadmill more stable. It should be noted that when the middle frame assembly 01 does not have a middle frame fixing seat 19, the sleeve 15 and the elongated groove 17 can be provided on the middle frame assembly's frame.

[0059] Furthermore, in this embodiment of the present invention, a fine-tuning line 18 is also connected to the rear end of the connecting plate 12. The other end of the fine-tuning line 18 extends to the rear end of the frame of the middle frame assembly 01. A handle 3 connected to the fine-tuning line 18 is provided at the rear end of the middle frame assembly 01. Pulling the handle 3 can cause the fine-tuning line 18 to move the connecting plate 12. In a specific embodiment of the present invention, by providing a handle 31 at the rear end of the middle frame assembly 01 that can pull the pull plate 14, the unlocking and folding actions are completed at the same position, improving the smoothness of treadmill folding and enhancing the overall user experience.

[0060] Furthermore, in a specific embodiment of this utility model, the folding treadmill is provided with folding unlocking mechanisms on both sides. The handle 3 includes a crossbar 32 extending to both sides of the middle frame assembly 01 and a handle 31 connected to the crossbar 32. Both ends of the crossbar 32 are connected to a fine-tuning line 18. Pulling the handle 3 causes the fine-tuning lines 18 at both ends of the crossbar 32 to move simultaneously. By placing the handle in the middle of the middle frame assembly 01 and providing folding unlocking mechanisms on both sides, this utility model not only makes the folding unlocking function of the entire treadmill more reliable but also makes the unlocking operation more convenient.

[0061] Furthermore, to facilitate the connection of the handle 3, this embodiment of the utility model also provides a limiting block assembly 4, such as... Figure 13 As shown, one end of the limiting block assembly 4 is connected to the end of the handle 3, and the other end is rotatably connected to the middle frame assembly 01. The middle area of ​​the limiting block assembly 4 is provided with a first connecting hole 41, and the fine adjustment line 18 is connected to the first connecting hole 41. Pulling the handle 3 causes the limiting block assembly 4 to rotate on the base, so that the first connecting hole 41 drives the fine adjustment line 18 to move away from the front frame assembly 02.

[0062] Specifically, in a specific embodiment of this utility model, the limiting block component 4 is a bent structure as shown in the attached figure. One end of the bent structure is provided with a third connecting hole 44, which is rotatably connected to the middle frame component 01. A first connecting hole 41 is provided at the middle bending position of the bent structure, which is connected to the fine-tuning line 18. The other end of the bent structure bends away from the front frame component 02, and a second connecting hole 42 is provided thereon. The handle 3 is connected to the second connecting hole 42.

[0063] Furthermore, a first limiting block 43 is provided on the circumferential side of the second connecting hole 42, and a second limiting block 34 corresponding to the first limiting block 43 is provided at the end of the handle 3. A limiting connecting shaft 33 is provided at the end of the handle 3, and the second limiting block 34 is provided on the side of the limiting connecting shaft 33. When the limiting connecting shaft 33 is connected to the second connecting hole 42, the first limiting block 43 and the second limiting block 34 abut against each other to limit the relative position between the limiting connecting shaft 33 and the limiting block.

[0064] Furthermore, to facilitate the connection of the fine-tuning line 18, this embodiment of the invention also provides, as follows: Figure 14 The fine-tuning line connector 5 shown specifically includes a connecting base 51 and a support base 52 protruding from the connecting base 51. The support base 52 is provided with a support hole 53, through which the fine-tuning line 18 can pass to control the fine-tuning line 18 in a suitable position. Correspondingly, the connecting base 51 is also provided with a rotating shaft connecting hole 54 on its side. The third connecting hole 44 of the limiting block assembly 4 is positioned opposite to the rotating shaft connecting hole 54, and the limiting block assembly 4 is rotated around the rotating shaft connecting hole 54 by connecting the rotating shaft.

[0065] In a specific embodiment of this utility model, the height of the support base 52 from the bottom surface of the middle frame assembly is the same as the height of the first connecting hole 41 from the bottom surface of the middle frame assembly 01, so that when the fine-tuning line 18 is connected to the first connecting hole 41 at the middle bend position of the limiting block assembly 4, the fine-tuning line 18 remains parallel to the middle frame assembly 01, and a preset distance is maintained between the fine-tuning line 18 and the middle frame assembly 01, so as to facilitate pulling and controlling the fine-tuning line 18.

[0066] This utility model, through the reasonable arrangement of the limiting block assembly 4 and the fixing seat of the fine-tuning line 18, allows for two operating modes for pulling the fine-tuning line 18. Specifically, Figures 16-17To explain the relationship between the fine-tuning line 18 and the handle 3 when rotating the handle 3, the user can move the handle 3 towards the middle frame assembly 01 after grasping it. During use, the user can grasp the upper side of the middle frame assembly 01 and the lower side of the handle 3 respectively, bringing them closer together. At this time, due to the mutual abutment between the first limiting block 43 on the limiting block assembly 4 and the second limiting block 34 on the side of the handle 3, the limiting block assembly 4 rotates as a whole towards the middle frame assembly 01, and the fine-tuning line 18 moves, thereby unlocking the spring pin assembly 1.

[0067] Furthermore, Figure 18-19 To explain the relationship between the fine-tuning line 18 and the handle 3 when the user pulls the handle 3 outward, the lateral limiting connecting shaft 33 of the handle 3 abuts against the third connecting hole of the limiting block assembly 4. At this time, the limiting block assembly 4 rotates towards the middle frame assembly 01 under the drive of the limiting connecting shaft 33, and the fine-tuning line 18 moves to unlock the spring pin assembly 1. It can be seen that the crossbar 32 of the handle 3 does not rotate with the limiting block assembly 4.

[0068] By rationally setting the structure of the limiting block component 4 and its connection with the handle 3, this utility model can simultaneously satisfy both rotation unlocking and translation unlocking methods, adapting to the operating habits of different users and making the folding function of the folding treadmill more practical.

[0069] Furthermore, in some specific embodiments of this utility model, the treadmill further includes a rear frame assembly 03, which is connected to the middle frame assembly 01 via a hinge 6. Specifically, the hinge 6 includes a first connecting block 61 and a second connecting block 62. The first connecting block is connected to the rear end of the middle frame assembly 01, and the second connecting block is connected to the front end of the rear frame assembly 03. Figures 20-22 The hinge 6 can fold at 90° and 180°, thereby allowing the middle frame assembly 01 and the rear frame assembly 03 to fold together. Since the structure of the hinge 6 is existing technology and not the focus of this invention, it will not be described in detail here.

[0070] This utility model embodiment provides a folding treadmill with the following advantages:

[0071] 1. The front frame assembly 02 and the middle frame assembly 01 are set separately, and the folding and unfolding between the front frame assembly 02 and the middle frame assembly 01 can be realized through the folding unlocking mechanism, so that the treadmill occupies a smaller volume after folding and is easier to store.

[0072] 2. By using the spring pin assembly 1 set at the front end of the middle frame assembly 01 and the flat fixing hole 21 and folding fixing hole 22 set on the front frame assembly 02, the middle frame assembly 01 and the front frame assembly 02 can be fixed in different states. The overall structure is simple and the operation is reliable.

[0073] 3. The pull plate 14 is bent towards the center of the middle frame assembly 01, and a long slot is provided on the middle frame assembly 01 so that the pull plate 14 can enter the long slot, thereby hiding the pull plate 14 inside the middle frame assembly 01 and improving the overall aesthetics of the treadmill.

[0074] 4. The fine-tuning line 18 extends the unlocking control to the end of the middle frame component 01, and sets a handle 3 at the end, which makes it easier for users to perform a smooth unlocking operation between the middle frame component 01 and the front frame component 02, thus improving the user experience.

[0075] 5. The connection between the limit block component 4 and the handle 3 is set so that users can unlock the spring pin component 1 by either sliding the handle 3 or rotating the handle 3, which adapts to the usage habits of different users and further improves the user experience.

[0076] 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 to the above embodiments by those skilled in the art after reading this specification are all within the scope of protection of the present invention. The various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0077] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

Claims

1. A foldable treadmill characterized by, The device includes a front frame assembly, a middle frame assembly, and a folding unlocking mechanism. The folding unlocking mechanism includes a spring-loaded pin assembly at the front end of the middle frame assembly. The spring-loaded pin assembly includes a pin and an elastic element. The pin is located at the front edge of the middle frame assembly. The elastic element abuts against the pin behind the pin, providing the pin with a spring force that protrudes beyond the front edge of the middle frame assembly to approach the front frame assembly. The folding unlocking mechanism also includes a flat mounting hole parallel to the plane of the front frame assembly and a folding mounting hole perpendicular to the plane of the front frame assembly. When the pin is connected to the flat mounting hole, the front frame assembly and the middle frame assembly are unfolded. When the pin is connected to the folding mounting hole, the front frame assembly and the middle frame assembly are folded. A connecting plate is connected to the side of the pin. The connecting plate extends away from the front frame assembly. Pulling the connecting plate can move the pin away from the front frame assembly, so that the pin can be pulled out from the flat mounting hole or the folding mounting hole. The front frame assembly and the middle frame assembly can be rotated by a rotating shaft.

2. The folding treadmill of claim 1, wherein, The spring pin assembly also includes a sleeve that is fixedly connected to the middle frame assembly. A spring and a pin are provided inside the sleeve. The two ends of the spring abut against the bottom end of the pin and the sleeve, respectively. The front edge of the sleeve is located near the front edge of the middle frame assembly so that the pin protrudes from the front edge of the middle frame assembly under the action of the spring force. A pull groove is provided on the side of the sleeve that extends along the axial direction of the pin. A connecting plate passes through the pull groove and connects to the pin in the sleeve.

3. The folding treadmill of claim 2, wherein, The connecting plate includes a first connecting plate and a second connecting plate respectively connected to both sides of the pin. A clearance hole is formed between the first connecting plate and the second connecting plate to allow the rotating shaft to pass through the clearance hole. The connecting plate also includes a pull plate. The ends of the first connecting plate and the second connecting plate are connected to each other and connected to the pull plate. The pull plate extends in a direction away from the front frame assembly.

4. The folding treadmill of claim 3, wherein, The mid-frame assembly has a long slot, and the pull plate bends into the long slot towards the center of the mid-frame assembly to enter the inner side of the mid-frame assembly's frame.

5. The folding treadmill of claim 4, wherein, The middle frame assembly is provided with a middle frame fixing seat, which includes a fixing plate and a middle frame connecting seat. The middle frame connecting seat is fixedly connected to the upper or lower side of the middle frame assembly frame. The fixing plate is perpendicular to the middle frame connecting seat and is set to fit the side of the front end of the middle frame assembly. The sleeve is fixedly connected to the front end of the fixing plate. A through hole for the rotation shaft to pass through is provided in the middle of the fixing plate, and an elongated groove is provided on the rear side of the through hole.

6. The folding treadmill of any one of claims 1-5, wherein, The rear end of the connecting plate is also connected to a fine-tuning line, the other end of which extends to the rear end of the frame of the middle frame component. The rear end of the middle frame component is provided with a handle connected to the fine-tuning line. Pulling the handle can cause the fine-tuning line to move the connecting plate.

7. The folding treadmill according to claim 6, characterized in that, The folding treadmill has folding unlocking mechanisms on both sides. The handle includes a crossbar extending to both sides of the middle frame assembly and a handle connected to the crossbar. Each end of the crossbar is connected to a fine-tuning line. Pulling the handle causes the fine-tuning lines at both ends of the crossbar to move synchronously.

8. The folding treadmill according to claim 7, characterized in that, The folding unlocking mechanism also includes a limiting block assembly. One end of the limiting block assembly is connected to the end of the handle, and the other end is rotatably connected to the bottom surface of the middle frame assembly. A first connecting hole is provided in the middle area of ​​the limiting block assembly, and a fine-tuning line is connected to the first connecting hole. Pulling the handle causes the limiting block assembly to rotate on the bottom surface of the middle frame assembly, so that the first connecting hole drives the fine-tuning line to move away from the front frame assembly.

9. The folding treadmill according to claim 8, characterized in that, The limiting block assembly is a bent structure connected at a preset angle. One end of the bent structure is rotatably connected to the middle frame assembly, and the other end of the bent structure is provided with a second connecting hole. A first limiting block is provided on the side of the second connecting hole. A limiting connecting shaft is provided at the end of the handle crossbar. A second limiting block is provided on the side of the limiting connecting shaft. The limiting connecting shaft is connected to the second connecting hole, and the first limiting block and the second limiting block abut against each other.

10. The folding treadmill according to claim 8, characterized in that, The folding unlocking mechanism also includes a fine-tuning line connector, which includes a connecting base and a support base protruding from the connecting base. The connecting base is connected to the bottom surface of the middle frame assembly. The support base is provided with a support hole. The height of the support hole from the bottom surface of the middle frame assembly is the same as the height of the first connecting hole of the limiting block assembly from the bottom surface of the middle frame assembly. The fine-tuning line is connected in the support hole so that the fine-tuning line and the bottom surface of the middle frame assembly maintain a preset distance.

11. The folding treadmill according to claim 10, characterized in that, The connecting base is provided with a rotating shaft connection hole on the side, and one end of the bending structure of the limiting block assembly is rotatably connected to the rotating shaft connection hole.

12. The folding treadmill according to claim 1, characterized in that, The folding treadmill also includes a rear frame assembly, which is connected to the middle frame assembly by a hinge, allowing the rear frame assembly and the middle frame assembly to be folded or unfolded.

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