Treadmill and base frame folding mechanism thereof

Abstract

The utility model relates to the technical field of treadmills, in particular to a treadmill and a base frame folding mechanism thereof, the treadmill is arranged between a fixed base frame and a movable base frame of a base frame, the movable base frame turns over up and down relative to the fixed base frame through the folding mechanism, and the base frame folding mechanism comprises two hinge assemblies and two plug pin assemblies. The movable bottom frame is hinged to the fixed bottom frame through the two hinge assemblies, and the relative positions of the movable bottom frame and the fixed bottom frame are locked and kept through the two plug pin assemblies. After the technical scheme is adopted, the movable underframe can turn over up and down relative to the fixed underframe, or be put down to be in a supporting working state, or be put up to be in a storage folding state, so that a user can make the treadmill more compact when not in use according to own requirements or space limitation, and the occupied space is reduced; meanwhile, flexibility and convenience in use are improved, the problem that a supporting part of the treadmill base frame occupies a large space is effectively solved, and the whole treadmill is convenient to carry, store and place.

Description

Technical Field

[0001] The utility model relates to the technical field of treadmills, in particular to a treadmill and a folding mechanism of its base frame. Background Art

[0002] Treadmills are fitness equipment commonly used in families and gyms. Moreover, they are the simplest type of home fitness equipment and the best choice for home fitness machines. To facilitate storage, most users will choose a foldable treadmill. After folding the upright column close to the machine base, the treadmill is stored upright to save space.

[0003] Chinese Patent Publication Document (CN202199033U) discloses a treadmill with a folding limit mechanism, including a base and a running platform. One end of the running platform is hinged to the base, and also includes a gas spring and a limit tube. By lifting the running platform, it is supported by the gas spring and cooperates with the limit tube to provide stable support, so that the running platform can be lifted and placed.

[0004] Chinese Patent Publication Document (CN113274695A) discloses a folding structure and its treadmill, including a chassis, a main frame rotatably connected to the chassis, and a folding assembly provided between the chassis and the main frame. By using the position of the folding assembly on the center line of the main frame and the chassis, the entire folding structure operates more stably, and it is possible to achieve a stable folding effect without left and right connecting rods, and there will be no problem of yaw.

[0005] Although the running platform or the main frame has achieved the function of upward folding and storage through the folding mechanism, there is still a problem that the support part of the chassis occupies a large space. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a treadmill and a folding mechanism of its base frame, which can choose to fold or unfold the base frame according to its own needs or space limitations.

[0007] To achieve the above purpose, the technical solution adopted by the utility model is:

[0008] The folding mechanism of the base frame of the treadmill is arranged between the fixed chassis and the movable chassis of the base frame. The movable chassis is turned up and down relative to the fixed chassis through the folding mechanism. The base frame folding mechanism includes two hinge assemblies and two pin assemblies. The movable chassis is hinged to the fixed chassis through the two hinge assemblies and is locked by the two pin assemblies to maintain the relative positions of the movable chassis and the fixed chassis.

[0009] Preferably, the hinge assembly includes a hinge seat and a hinge rod, the hinge seat is fixedly mounted on a fixed base frame and has a hinge hole horizontally opened thereon, the movable base frame has a through hole at a position corresponding to the hinge hole, the hinge rod passes through the through hole and the hinge hole and limit members are provided at both ends of the hinge rod for limiting the axial displacement of the hinge rod.

[0010] Preferably, the hinged rod comprises a rod body and a head at one end of the rod body, the rod body passes through the through hole and the hinge hole and is locked by a nut, and nylon washers are respectively arranged between the movable base frame and the head and the nut.

[0011] Preferably, a stopper for limiting the flipping range of the movable chassis is provided on the articulated seat.

[0012] Preferably, the two latch assemblies are located between the two hinge assemblies, and the latch assembly includes a keyhole plate, a latch seat, a latch, a compression spring and a driving member. The latch seat is fixedly mounted on the fixed base frame and is provided with a slideway therein, and a slideway opening is provided on the side of the slideway close to the keyhole plate, the latch is slidably fitted in the slideway, the compression spring is located in the slideway and abuts against the latch, and the action direction of the compression spring causes the latch to extend out of the slideway opening and the latch seat, and the driving member drives the latch to overcome the compression spring and retract into the slideway; the keyhole plate is fixedly mounted on the movable base frame and is provided with a lock hole, and the moving path of the latch intersects with the rotation path of the lock hole as the movable base frame flips up and down.

[0013] Preferably, an L-shaped slot is provided on the latch seat, the L-shaped slot consists of a transverse slot and a vertical slot, the vertical slot is connected and arranged on a side of the transverse slot away from the slide opening; the driving member passes through the L-shaped slot and is connected to the latch.

[0014] Preferably, a threaded hole is provided on the latch pin, and one end of the driving member passes through the L-shaped slot and is threadedly engaged in the threaded hole.

[0015] Preferably, there are two lock holes on the lock hole plate, and the two lock holes are distributed on the same circumference, one of the lock holes is used to be plugged into and cooperate with the latch when the movable base frame is retracted upward, and the other lock hole is used to be plugged into and cooperate with the latch when the movable base frame is lowered downward; or, there is one lock hole on the lock hole plate, which is used to be plugged into and cooperate with the latch when the movable base frame is lowered downward.

[0016] The utility model also provides a treadmill, comprising a base frame, wherein the base frame comprises a fixed base frame, a movable base frame and a base frame folding mechanism arranged between the fixed base frame and the movable base frame of the base frame, and the movable base frame is turned up and down relative to the fixed base frame through the base frame folding mechanism.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model sets the base frame as a fixed base frame and a movable base frame, and a base frame folding mechanism is arranged between the fixed base frame and the movable base frame, so that the movable base frame can be turned up and down relative to the fixed base frame, or lowered to a supporting working state, or retracted to a storage and folding state. Users can choose to support, fold or unfold the base frame according to their own needs or space limitations, which can make the treadmill more compact when not in use, reduce the occupied space, and at the same time increase the flexibility and convenience during use, effectively solving the problem that the supporting part of the treadmill base frame occupies a large space and facilitating the handling, storage and placement of the whole treadmill.

[0019] In addition, the pin assembly of this embodiment includes a pin seat, a driving member and a pin. The pin slides axially in the pin seat. An L-shaped card slot communicated with the internal slideway is formed on the pin seat. The driving member passes through the L-shaped card slot and is connected to the pin. On the one hand, operating the driving member to move in the L-shaped card slot can drive the pin to slide in the slideway, or the pin can be retracted in the slideway and use the horizontal block of the L-shaped card slot to maintain the compressed state of the compression spring, or one end of the pin extends out of the slideway and enters the lock hole. On the other hand, after increasing the locking force between the driving member and the pin, it can also play a role in pressing and maintaining the position of the pin on the pin seat, avoiding the phenomenon that the pin accidentally disengages from the lock hole and improving the use safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the utility model when the movable base frame is lowered.

[0021] Figure 2 It is a schematic structural diagram of the utility model when the movable base frame is retracted.

[0022] Figure 3 It is an exploded view of the base frame folding mechanism of the utility model.

[0023] Figure 4 It is an exploded view of the pin assembly (the lock hole plate is not shown) of the utility model.

[0024] Figure 5 It is a schematic structural diagram of the lock hole plate in Embodiment 2 of the utility model.

[0025] Markings in the figure: 10, fixed base frame; 20, movable base frame; 31, hinge seat; 32, hinge rod; 33, nut; 34, nylon washer; 35, stop block; 41, compression spring; 42, pin; 43, driving member; 44, lock hole plate; 45, square tube; 46, round tube; 47, U-shaped plate; 48, lock hole; 49, L-shaped card slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the above features and advantages of the utility model more obvious and understandable, specific embodiments are hereby given and detailed descriptions are made below in conjunction with the accompanying drawings.

[0027] Embodiment 1

[0028] As Figures 1 - 4 shown, this embodiment provides a treadmill, including a base frame, the base frame includes a fixed bottom frame 10, a movable bottom frame 20, and a base frame folding mechanism disposed between the fixed bottom frame 10 and the movable bottom frame 20. The movable bottom frame 20 is turned up and down relative to the fixed bottom frame 10 through the base frame folding mechanism.

[0029] In this embodiment, the fixed bottom frame 10 is in a rectangular frame shape, the movable bottom frame 20 is in a U-shaped frame shape, the base frame folding mechanism includes two hinge assemblies and two pin assemblies. The two pin assemblies are located between the two hinge assemblies. The movable bottom frame 20 is hinged to the fixed bottom frame 10 through the two hinge assemblies and is locked by the two pin assemblies to maintain the relative positions of the movable bottom frame 20 and the fixed bottom frame 10.

[0030] In this embodiment, the hinge assembly includes a hinge seat 31 and a hinge rod 32. The hinge seat 31 is fixedly installed on the fixed bottom frame 10 and is horizontally provided with a hinge hole thereon. A through hole is penetrated through the position of the movable bottom frame 20 corresponding to the hinge hole. The hinge rod 32 passes through the through hole and the hinge hole. The hinge rod 32 includes a rod body and a head located at one end of the rod body. After the rod body passes through the through hole and the hinge hole, it is locked by a nut 33. The axial displacement of the hinge rod 32 is restricted by the head of the hinge rod 32 and the nut 33, so that the movable bottom frame 20 turns up and down around the hinge rod 32.

[0031] Furthermore, a stop block 35 for restricting the turning range of the movable bottom frame 20 is provided on the hinge seat 31. When the movable bottom frame 20 is turned up and folded, it abuts against the stop block 35. Nylon washers 34 are respectively provided between the movable bottom frame 20 and the head and the nut 33. The nylon washers 34 can produce a damping effect between the movable bottom frame 20 and the two ends of the hinge rod 32, and the damping is used to maintain the upward folding state of the movable bottom frame 20 and restrict the lateral movement of the movable bottom frame 20.

[0032] In this embodiment, the pin assembly includes a lock hole plate 44, a pin seat, a pin 42, a compression spring 41, and a driving member 43. The lock hole plate 44 is fixedly installed on the movable bottom frame 20. When the movable bottom frame 20 turns up and down, it will also drive the lock hole plate 44 to turn up and down around the hinge rod 32 synchronously. The pin seat is fixedly installed on the fixed bottom frame 10. The two pin seats are both located between the two lock hole plates 44 at both ends of the movable bottom frame 20. A slideway is provided in the pin seat, and a slideway opening is provided on one side of the slideway close to the lock hole plate 44.

[0033] The latch seat can specifically adopt the following structure: the latch seat includes a square tube 45, a round tube 46 and a U-shaped plate 47, the square tube 45 is welded and fixed to the side wall of the fixed base frame 10, both ends of the U-shaped plate 47 are fixedly welded to the side wall of the square tube 45, the round tube 46 is located between the U-shaped plate 47 and the square tube 45 and is welded and fixed to the U-shaped plate 47, and the slideway is opened in the round tube 46.

[0034] The latch 42 is slidably fitted in the slideway, and the latch 42 is a stepped shaft structure. The compression spring 41 is located in the slideway and abuts against the latch 42. The action direction of the compression spring 41 causes the latch 42 to extend out of the slideway opening from the latch seat. The lock hole plate 44 is provided with a lock hole 48. The moving path of the latch 42 intersects with the rotation path of the lock hole 48 as the movable chassis 20 turns up and down. There is one lock hole 48 on the lock hole plate 44, which is used to be plugged and matched with the latch 42 when the movable chassis 20 is lowered. When the movable chassis 20 is lowered, the latch 42 can be inserted into the lock hole 48 after adjusting the angle, thereby maintaining the relative position of the movable chassis 20 and the fixed chassis 10.

[0035] The driving member 43 drives the latch pin 42 to overcome the compression spring 41 and retract into the slideway. Specifically, an L-shaped slot 49 is provided on the latch pin seat. The L-shaped slot 49 is composed of a horizontal slot and a vertical slot. The vertical slot is connected and arranged on the side of the horizontal slot away from the slideway opening. A threaded hole is provided on the latch pin 42. One end of the driving member 43 passes through the L-shaped slot 49 and is threadedly engaged in the threaded hole. After the driving member 43 is locked into the threaded hole on the latch pin 42, the driving member 43 is connected to the latch pin 42 as a whole. The driving member 43 is operated in the L-shaped slot. The movement in the card slot 49 can drive the latch 42 to slide in the slide, or be retracted in the slide (at this time, the driving member 43 is located in the vertical groove and the compression spring 41 is kept in a compressed state by the lateral obstruction of the vertical groove), or one end of the latch 42 extends out of the slide and enters the lock hole 48 (at this time, the driving member 43 is located at the end of the horizontal groove close to the slide opening). On the other hand, increasing the locking force between the driving member 43 and the latch 42 can also play a role in compressing and maintaining the position of the latch 42 on the latch seat, thereby avoiding the phenomenon that the latch 42 accidentally disengages from the lock hole 48, thereby improving the safety of use.

[0036] Example 2

[0037] The difference between this embodiment and the above-mentioned embodiment 1 is only that the number of the locking holes 48 on the locking hole plate 44 is different. Figure 5 As shown, in this embodiment, there are two locking holes 48 on the locking hole plate 44, and the two locking holes 48 are distributed on the same circumference. One of the locking holes 48 is used to be plugged into and matched with the latch 42 when the movable base frame 20 is retracted upward, and the other locking hole 48 is used to be plugged into and matched with the latch 42 when the movable base frame 20 is lowered.

[0038] The process of retracting and extending the base frame in the above-mentioned Embodiments 1 and 2 is as follows: To lower the movable base frame 20, the two side driving members 43 need to be loosened and then respectively pulled downward along the L-shaped card slot 49 into the horizontal slot. While stepping on the movable base frame 20, the fixed base frame 10 is tilted forward by a certain angle. When the bolt 42 is inserted into the lock hole 48 of the lock hole plate 44, the driving member 43 is tightened. The driving member 43 is preferably a bolt with a knob; To retract the movable base frame 20, while the fixed base frame 10 is tilted forward by a certain angle, the driving member 43 is loosened and then respectively pulled upward along the L-shaped card slot 49 into the vertical slot. The bolt 42 is kept retracted by the horizontal block of the vertical slot. Then the movable base frame 20 is lifted, and the posture is maintained by the damping of the nylon washer 34 or the driving member 43 is pushed backward to the horizontal slot to make the bolt 42 enter another lock hole 48 and then tightened to complete the folding.

[0039] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments. What is described in the above-mentioned embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present invention, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. The folding mechanism of the base frame of the treadmill is characterized by: The base frame folding mechanism is arranged between the fixed base frame and the movable base frame of the base frame, and the movable base frame is flipped up and down relative to the fixed base frame through the folding mechanism. The base frame folding mechanism includes two hinge assemblies and two latch assemblies. The movable base frame is hinged to the fixed base frame through the two hinge assemblies and the relative position of the movable base frame and the fixed base frame is locked and maintained through the two latch assemblies.

2. The folding mechanism of the base frame of the treadmill according to claim 1, characterized in that: The hinge assembly includes a hinge seat and a hinge rod. The hinge seat is fixedly installed on a fixed base frame and has a hinge hole horizontally opened thereon. A through hole is penetrated at the position of the movable base frame corresponding to the hinge hole. The hinge rod passes through the through hole and the hinge hole and limit members for limiting the axial displacement of the hinge rod are provided at both ends of the hinge rod.

3. The folding mechanism of the base frame of the treadmill according to claim 2, characterized in that: The hinged rod comprises a rod body and a head at one end of the rod body. The rod body is locked by a nut after passing through a through hole and a hinge hole. Nylon washers are respectively arranged between the movable base frame and the head and the nut.

4. The folding mechanism of the base frame of the treadmill according to claim 2, characterized in that: The hinged seat is provided with a stopper for limiting the turning range of the movable chassis.

5. The folding mechanism of the base frame of the treadmill according to claim 1, characterized in that: The two latch assemblies are located between the two hinge assemblies, and the latch assemblies include a lock hole plate, a latch seat, a latch, a compression spring and a driving member. The latch seat is fixedly mounted on the fixed base frame and is provided with a slideway therein. A slideway opening is provided on the side of the slideway close to the lock hole plate. The latch is slidably fitted in the slideway. The compression spring is located in the slideway and abuts against the latch. The action direction of the compression spring causes the latch to extend out of the slideway opening and out of the latch seat, and the driving member drives the latch to overcome the compression spring and retract into the slideway. The lock hole plate is fixedly mounted on the movable base frame and is provided with a lock hole. The moving path of the latch intersects with the rotation path of the lock hole as the movable base frame flips up and down.

6. The folding mechanism of the base frame of the treadmill according to claim 5, characterized in that: The latch seat is provided with an L-shaped slot, which consists of a transverse slot and a vertical slot, and the vertical slot is connected and arranged on a side of the transverse slot away from the slideway opening; the driving member passes through the L-shaped slot and is connected to the latch.

7. The folding mechanism of the base frame of the treadmill according to claim 6, characterized in that: A threaded hole is provided on the latch pin, and one end of the driving member passes through the L-shaped slot and is threadedly engaged in the threaded hole.

8. The folding mechanism of the base frame of the treadmill according to claim 5, characterized in that: There are two lock holes on the lock hole plate, and the two lock holes are distributed on the same circumference. One of the lock holes is used to be plugged into and matched with the latch when the movable base frame is retracted upward, and the other lock hole is used to be plugged into and matched with the latch when the movable base frame is lowered downward; or, there is one lock hole on the lock hole plate, which is used to be plugged into and matched with the latch when the movable base frame is lowered downward.

9. A treadmill, comprising a base frame, characterized in that: The base frame comprises a fixed base frame, a movable base frame and a base frame folding mechanism arranged between the fixed base frame and the movable base frame of the base frame. The movable base frame is turned up and down relative to the fixed base frame through the base frame folding mechanism.

10. The treadmill according to claim 9, characterized in that: The base frame folding mechanism is the base frame folding mechanism according to any one of claims 1 to 8.

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