Folding mechanism and folding handrail and treadmill having the same

Abstract

This utility model relates to the field of fitness equipment technology, specifically to a folding mechanism and a folding handrail and treadmill incorporating the folding mechanism. The folding mechanism includes a fixed component and a swinging component. The swinging component has a rotation center hole, an arc-shaped limiting hole, and a locking hole on its connecting end. A limiting shaft is located within the arc-shaped limiting hole, and a central shaft is located within the rotation center hole, with a press cover and a locking cover connected to both ends of the central shaft. The fixed component has a first embedding groove and a second embedding groove recessed at the positions corresponding to the press cover and the locking cover. The second embedding groove has an eccentric hole with the same radius as the locking hole. The locking cover protrudes and has a locking shaft. When the swinging component rotates to the working state, the locking shaft passes through the eccentric hole and inserts into the locking hole on the swinging component. When the swinging component rotates to the folded state, the locking shaft disengages from the locking hole. Visually, the arc-shaped limiting hole is not visible; only the press cover, the locking cover, the first fixing seat, and the second fixing seat are visible.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, specifically to a folding mechanism and a folding handrail and treadmill having the folding mechanism. Background Technology

[0002] Fitness equipment, such as treadmills, typically employs folding mechanisms in the handrails to facilitate switching between working and folded states. For example, Chinese patent publication (CN223158757U) discloses a treadmill handrail device with folding and locking functions, which includes a handrail tube, a folding structure, and a handrail frame connected by a connecting module. The folding structure has an arc-shaped through hole and a second through hole. A knob module is movably inserted through the handrail tube and the folding structure. When switching states, pressing the knob module releases its locking relationship with the folding structure, allowing the handrail tube to rotate. However, the arc-shaped through hole of this type of folding mechanism is exposed, making it susceptible to interference from foreign objects, which can affect the rotation. It is also visually unappealing. Utility Model Content

[0003] The purpose of this invention is to provide a folding mechanism that can maintain a folding function with a controllable rotation range while having a neat and aesthetically pleasing appearance and reducing interference from foreign objects on the swing.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The folding mechanism includes a fixed component and a swing component. The swing component is provided with a rotation center hole, at least one arc-shaped limiting hole and at least one locking hole respectively arranged concentrically with the rotation center hole on the connecting end of the fixed component. Each of the arc-shaped limiting holes has a sliding fit with a limiting shaft, and both ends of each limiting shaft are fixedly connected to a fixed component. A central shaft is slidably fitted inside the rotating center hole, and both ends of the central shaft pass through the fixing component and are fixedly connected to a pressing cover and a locking cover located on both sides of the fixing component, respectively. The outer side of the fixing component is recessed at the position corresponding to the press cover, and a reset component is provided between the press cover and the first embedding groove; The outer side of the fixed component is recessed at the position corresponding to the locking cover. An eccentric hole coaxial with the locking hole and located on the same radius is provided through the second embedding groove. A locking shaft is provided protruding from the inner end of the locking cover facing the second embedding groove at the position corresponding to the eccentric hole. When the swing component rotates to the working state, the locking shaft passes through the eccentric hole on the fixed component and is inserted into the locking hole on the swing component. When the swing component rotates to the folded state, the locking shaft leaves the locking hole on the swing component.

[0005] Preferably, the reset element is a compression spring.

[0006] Preferably, the central shaft and the pressing cover are integrally formed, the end of the central shaft has an internal threaded hole, the locking cover has a countersunk hole through the central shaft at the position corresponding to the central shaft and a countersunk bolt is inserted in the countersunk hole, the head of the countersunk bolt abuts in the countersunk hole and the stud thread of the countersunk bolt is engaged with the internal threaded hole of the central shaft.

[0007] Preferably, the fixing component includes a first fixing seat and a second fixing seat, and a U-shaped space is formed between the first fixing seat and the second fixing seat to insert the connecting end of the swing component. The first fixing seat is provided with a first embedding groove for the pressing cover to be movably embedded, and the second fixing seat is provided with a second embedding groove for the locking cover to be movably embedded and an eccentric hole for the locking shaft to be movably passed through.

[0008] Preferably, the connecting end of the swing component is recessed with a positioning groove, and the rotation center hole, the arc limiting hole and the locking hole all penetrate the positioning grooves on both sides and the positioning grooves are concentric with the rotation center hole; the first fixed seat is also provided with a first positioning protrusion that is embedded in the positioning groove and faces the first embedded groove, and a first through hole for the central shaft to pass through is opened on the first positioning protrusion at the position corresponding to the rotation center hole; and / or, the second fixed seat is also provided with a second positioning protrusion that is embedded in the positioning groove and faces the second embedded groove, and a second through hole for the central shaft to pass through is opened on the second positioning protrusion at the position corresponding to the rotation center hole.

[0009] Preferably, the first fixing seat has a first threaded hole at the position corresponding to the arc-shaped limiting hole, which is connected to the first embedding groove; the second fixing seat has a second threaded hole at the position corresponding to the arc-shaped limiting hole, which is connected to the second embedding groove; the limiting shaft is a locking bolt, and the two ends of the limiting shaft are respectively threaded into the first threaded hole and the second threaded hole.

[0010] Preferably, the outer contour of the first embedding groove is the same as the outer contour of the press cover, and the outer contour of the second embedding groove is the same as the outer contour of the locking cover.

[0011] Preferably, thrust pads are provided between the connection end of the first fixed seat and the swing component and between the connection end of the second fixed seat and the swing component.

[0012] This utility model also provides a folding handrail, including a handrail frame and the aforementioned folding mechanism installed and fixed on the handrail frame, wherein the swinging component is a movable handrail and the fixing component is fixedly installed on the handrail frame.

[0013] This utility model further provides a treadmill, including the above-mentioned folding handrail.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This utility model's folding mechanism is applicable to the folding and storage of various fitness equipment, such as folding handrails for treadmills. The folding mechanism includes a swinging component, a fixing component, a locking cover, a pressing cover, a central shaft, and a resetting component. The connecting end of the swinging component is provided with a rotation center hole, an arc-shaped limiting hole, and a locking hole. The central shaft passes through the rotation center hole as the rotation axis of the swinging component, and both ends of the central shaft extend to connect the locking cover and the pressing cover. The pressing cover and the locking cover are respectively movably embedded into the first and second embedding grooves on the fixing component. Visually, only the pressing cover, locking cover, first fixing seat, and second fixing seat are visible, not the arc-shaped limiting hole. The stop cover and the pressing cover are connected as one unit through a central shaft and necessary connecting parts. When the pressing cover is pressed, it overcomes the reset part and drives the locking cover to move away from the second embedded groove. This causes the locking shaft on the locking cover to leave the locking hole on the swinging part. This allows the swinging part to swing up and down and release the pressing cover. Since the locking shaft and the locking hole are misaligned, the swinging part is not restricted. When the swinging part rotates to the working state, the locking shaft passes through the eccentric hole on the fixed part and inserts into the locking hole on the swinging part. When the swinging part rotates to the folded state, the locking shaft leaves the locking hole on the swinging part.

[0015] This invention allows the treadmill to be more compact when not in use, reducing space occupation, according to one's own needs or space limitations. It also increases the flexibility and convenience of use, effectively solving the problem of excessively long treadmill handrails taking up too much space, and facilitating the transportation and storage of the entire treadmill. Attached Figure Description

[0016] Figure 1 The folding mechanism of this utility model explodes Figure 1 .

[0017] Figure 2 The folding mechanism of this utility model explodes Figure 2 .

[0018] Figure 3 This is a schematic diagram of the separate structure of the swing component, the first fixed base, and the second fixed base of this utility model. Figure 1 .

[0019] Figure 4 This is a schematic diagram of the separate structure of the swing component, the first fixed base, and the second fixed base of this utility model. Figure 2 .

[0020] Figure 5 This is a schematic diagram of the separate structure of the switch assembly, the first fixing base, and the second fixing base of this utility model.

[0021] Figure 6 This is a schematic diagram of the connecting end structure of the swing component of this utility model.

[0022] Figure 7 This is a schematic diagram of the working structure of the folding handrail of the treadmill according to this utility model.

[0023] Figure 8 This is a schematic diagram of the folded handrail structure of the treadmill of this utility model in its folded state.

[0024] Figure 9 This is a cross-sectional view of the folding mechanism of this utility model at the positions of the two limiting shafts.

[0025] The markings in the diagram are as follows: 101, First fixed seat; 102, Second fixed seat; 103, Thrust flat pad; 1011, First positioning protrusion; 1012, First through hole; 1014, First embedded groove; 1015, First threaded hole; 1021, Second positioning protrusion; 1022, Second through hole; 1023, Eccentric hole; 1024, Second embedded groove; 1025, Second threaded hole; 200, Swinging component; 201, Rotation center hole; 202, Arc-shaped limiting hole; 203, Locking hole; 204, Positioning circular groove; 31, Press cover; 32, Central shaft; 33, Locking cover; 34, Countersunk bolt; 35, Locking shaft; 36, Reset component; 40, Limiting shaft; 300, Handrail frame. Detailed Implementation

[0026] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation. Example 1

[0027] like Figures 1-6 As shown, this embodiment provides a folding mechanism, including a fixed component and a swing component 200. The fixed component remains relatively stationary during use, while the swing component 200 swings up and down relative to the fixed component and changes its relative angle according to the user's actions during use. For example, when the relative angle between the swing component 200 and the fixed component is at a first angle, the swing component 200 is in the working state, and when the relative angle between the swing component 200 and the fixed component is at a second angle, the swing component 200 is in the folded state.

[0028] The swing component 200 of this embodiment has a connecting end that is movably connected to the fixed component. When the swing component 200 swings up and down, the connecting end is used as the fulcrum for rotation. The connecting end is provided with a rotation center hole 201 and at least one arc-shaped limiting hole 202 and at least one locking hole 203 respectively arranged concentrically with the rotation center hole 201. Preferably, there are two arc-shaped limiting holes 202 and two locking holes 203.

[0029] Wherein: the rotation center hole 201 extends laterally through the connecting end and serves as the axis of rotation of the swing component 200; a central shaft 32 passes through the rotation center hole 201 and is movably connected to the fixed component through the central shaft 32.

[0030] Wherein: the arc-shaped limiting hole 202 is concentric with the rotation center hole 201 and has a central angle that allows the swinging component 200 to swing between the first angle and the second angle. Preferably, the central angle of the arc-shaped limiting hole 202 is 90°. The limiting shaft 40 is slidably fitted in the arc-shaped limiting hole 202 and then the two ends of the limiting shaft 40 are fixedly connected to the fixed component, so that the swinging component 200 is also limited by the angle of the limiting shaft 40 in the arc-shaped limiting hole 202 when swinging.

[0031] Among them, the locking hole 203 is provided to keep the swing component 200 in the working state or the folded state. In this embodiment, the two locking holes 203 are centrally symmetrical about the rotation center hole 201. They cooperate with the locking shaft 35 on the switch assembly to keep the swing component 200 in the working state but not in the folded state. (Of course, in some other examples, the locking hole 203 and the arc limiting hole 202 can be located at different radii of circles and do not interfere with each other. In this way, two more locking holes 203 can be set to correspond to the swing component 200 at the second angle to keep the swing component 200 in the folded state.)

[0032] In this embodiment, the fixing component includes a first fixing seat 101 and a second fixing seat 102. One end of the first fixing seat 101 and one end of the second fixing seat 102 are engaged with each other and locked together by fasteners. The mating surfaces of the first fixing seat 101 and the second fixing seat 102 are provided with convex and concave-convex convex strips and grooves to further enhance the structural stability of the two.

[0033] A U-shaped space is formed between the other end of the first fixed seat 101 and the other end of the second fixed seat 102 to insert the connecting end of the swing component 200. The connecting end of the swing component 200 is located in the U-shaped space. A thrust flat pad 103 is provided between the connecting end of the first fixed seat 101 and the swing component 200 and between the connecting end of the second fixed seat 102 and the swing component 200, respectively.

[0034] To further enhance the centering stability of the swing component 200 rotating around the rotation center hole 201 and its central axis 32, the left and right sides of the connecting end of the swing component 200 in this embodiment are respectively provided with positioning circular grooves 204. The rotation center hole 201, the arc-shaped limiting hole 202 and the locking hole 203 all pass through the positioning circular grooves 204 on both sides, and the positioning circular grooves 204 are concentrically arranged with the rotation center hole 201. The first fixed seat 101 is provided with a first positioning protrusion 1011 embedded in the positioning circular groove 204 on the same side, and the second fixed seat 102 is also provided with a second positioning protrusion 1021 embedded in the positioning circular groove 204 on the same side. The positioning circular grooves 204 are the circumcircles of the first positioning protrusion 1011 and the second positioning protrusion 1021 or concentric circles of equal diameter. That is, the first positioning protrusion 1011 and the second positioning protrusion 1021 rotate around the central axis 32 in their respective positioning circular grooves 204. Preferably, the first positioning protrusion 1011 and the second positioning protrusion 1021 are circular. It should be noted that the first positioning protrusion 1011 and the second positioning protrusion 1021 and their respective positioning grooves 204 are not required to be present on both the left and right sides. In some other examples, there may only be the first positioning protrusion 1011 and its positioning groove 204, or only the second positioning protrusion 1021 and its positioning groove 204.

[0035] The first positioning protrusion 1011 has a first through hole 1012 at the position corresponding to the rotation center hole 201 for the central shaft 32 to pass through. The second positioning protrusion 1021 has a second through hole 1022 at the position corresponding to the rotation center hole 201 for the central shaft 32 to pass through. The two ends of the central shaft 32 pass through the first through hole 1012 and the second through hole 1022 respectively and are fixedly connected to the pressing cover 31 and the locking cover 33. The pressing cover 31 is on the side of the first fixed seat 101 away from the U-shaped space, and the locking cover 33 is on the side of the second fixed seat 102 away from the U-shaped space. The pressing cover 31, the central shaft 32 and the locking cover 33 are integrated as a component of the aforementioned switch assembly.

[0036] The connection between the pressing cover 31, the central shaft 32 and the locking cover 33 is as follows: the central shaft 32 and the pressing cover 31 are integrally formed, the end of the central shaft 32 has an internal threaded hole, the locking cover 33 has a countersunk hole through the central shaft 32 at the position corresponding to the countersunk hole and a countersunk bolt 34 is inserted in the countersunk hole, the head of the countersunk bolt 34 abuts in the countersunk hole and the stud thread of the countersunk bolt 34 is engaged with the internal threaded hole of the central shaft 32.

[0037] The first fixing seat 101 has a first embedding groove 1014 on the side away from the U-shaped space, and the second fixing seat 102 has a second embedding groove 1024 on the side away from the U-shaped space. The first embedding groove 1014 is directly opposite to the first positioning protrusion 1011 and the first through hole 1012 is connected to the first embedding groove 1014. The second embedding groove 1024 is directly opposite to the second positioning protrusion 1021 and the second through hole 1022 is connected to the second embedding groove 1024. The pressing cover 31 is movably embedded in the first embedding groove 1014, and the locking cover 33 is movably embedded in the second embedding groove 1024. In this way, the arc-shaped limiting hole 202 is not visible in appearance, and only the pressing cover 31, the locking cover 33, the first fixing seat 101 and the second fixing seat 102 are visible. For aesthetic purposes, the outer contour of the first embedding groove 1014 is the same as the outer contour of the pressing cover 31, and the outer contour of the second embedding groove 1024 is the same as the outer contour of the locking cover 33. Preferably, a circle coaxial with the positioning circular groove 204 is adopted.

[0038] The second embedding groove 1024 is also provided with an eccentric hole 1023, which extends laterally to the other side of the second positioning protrusion 1021 and is not concentric with the second through hole 1022. Since there are two locking holes 203 in this embodiment, there are also two eccentric holes 1023 in this embodiment, which are also centrally symmetrical. Each eccentric hole 1023 is coaxial with the corresponding locking hole 203 and is located on the same radius circle. The locking cover 33 has a locking shaft 35 protruding from the inner end of the second embedding groove 1024 corresponding to the position of the eccentric hole 1023. When the swinging component 200 swings to the first angle, the eccentric hole 1023 is directly connected to the corresponding locking hole 203. At this time, the locking shaft 35 is inserted into the locking hole 203 and can maintain the working state. When the swinging component 200 swings to the second angle, the eccentric hole 1023 is misaligned with the locking hole 203. At this time, the locking shaft 35 is not inserted into the locking hole 203.

[0039] The switch assembly also includes a reset member 36 between the press cover 31 and the first embedding groove 1014. The reset member 36 is a compression spring. When the press cover 31 is pressed, it overcomes the reset member 36 and drives the locking cover 33 to move away from the second embedding groove 1024 via the central shaft 32. This causes the locking shaft 35 on the locking cover 33 to leave the locking hole 203 on the swing member 200. In this way, the swing member 200 can be swung up and down to release the press cover 31. Since the locking shaft 35 is misaligned with the locking hole 203, the swing of the swing member 200 is unrestricted. When an external force drives the swing member 200 to rotate and causes the locking hole 203 to return to its original position and be aligned with the eccentric hole 1023, the reset member 36 causes the locking cover 33 to retract into the second embedding groove 1024 and the locking shaft 35 to re-insert into the locking hole 203. When the swing component 200 rotates to the working state, the locking shaft 35 passes through the eccentric hole 1023 on the fixed component and is inserted into the locking hole 203 on the swing component 200. When the swing component 200 rotates to the folded state, the locking shaft 35 leaves the locking hole 203 on the swing component 200.

[0040] The two ends of the two limiting shafts 40 are respectively fixedly connected to the fixing components. Specifically, the first positioning protrusion 1011 has a first threaded hole 1015 that communicates with the first embedding groove 1014 at the position corresponding to the arc limiting hole 202, and the second positioning protrusion 1021 has a second threaded hole 1025 that communicates with the second embedding groove 1024 at the position corresponding to the arc limiting hole 202. The limiting shaft 40 is a locking bolt, and the two ends of the limiting shaft 40 are respectively threaded into the first threaded hole 1015 and the second threaded hole 1025. Example 2

[0041] like Figures 1-9 As shown, this embodiment provides a treadmill including a folding handrail. The folding handrail includes a handrail frame 300 and a folding mechanism. The folding mechanism adopts the structure of Embodiment 1 above. The swinging component 200 is a movable handrail. The handrail frame 300 is provided with fastening holes. The fixing component is provided with mating holes corresponding to the fastening holes. That is, one end of the first fixing seat 101 and one end of the second fixing seat 102 are respectively provided with mating holes. The fixing component is installed on the handrail frame 300 by fasteners passing through the fastening holes and mating holes.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A folding mechanism, characterized in that: It includes a fixed component and a swing component. The swing component is provided with a rotation center hole, at least one arc-shaped limiting hole and at least one locking hole respectively arranged concentrically with the rotation center hole on the connecting end of the swing component that is movably connected to the fixed component. Each of the arc-shaped limiting holes has a sliding fit with a limiting shaft, and both ends of each limiting shaft are fixedly connected to a fixed component. A central shaft is slidably fitted inside the rotating center hole, and both ends of the central shaft pass through the fixing component and are fixedly connected to a pressing cover and a locking cover located on both sides of the fixing component, respectively. The outer side of the fixing component is recessed at the position corresponding to the press cover, and a reset component is provided between the press cover and the first embedding groove; The outer side of the fixed component is recessed at the position corresponding to the locking cover. An eccentric hole coaxial with the locking hole and located on the same radius is provided through the second embedding groove. A locking shaft is provided protruding from the inner end of the locking cover facing the second embedding groove at the position corresponding to the eccentric hole. When the swing component rotates to the working state, the locking shaft passes through the eccentric hole on the fixed component and is inserted into the locking hole on the swing component. When the swing component rotates to the folded state, the locking shaft leaves the locking hole on the swing component.

2. The folding mechanism according to claim 1, characterized in that: The reset element is a compression spring.

3. The folding mechanism according to claim 1, characterized in that: The central shaft and the pressing cover are integrally formed. The end of the central shaft has an internal threaded hole. The locking cover has a countersunk hole through it at the position corresponding to the central shaft, and a countersunk bolt is inserted in the countersunk hole. The head of the countersunk bolt rests in the countersunk hole, and the stud thread of the countersunk bolt is engaged with the internal threaded hole of the central shaft.

4. The folding mechanism according to claim 1, characterized in that: The fixing component includes a first fixing seat and a second fixing seat, and a U-shaped space is formed between the first fixing seat and the second fixing seat to insert the connecting end of the swing component. The first fixing seat is provided with a first embedding groove for the pressing cover to be movably embedded, and the second fixing seat is provided with a second embedding groove for the locking cover to be movably embedded and an eccentric hole for the locking shaft to be movably passed through.

5. The folding mechanism according to claim 4, characterized in that: The connecting end of the swing component is recessed with a positioning groove. The rotation center hole, the arc limiting hole, and the locking hole all penetrate the positioning grooves on both sides, and the positioning grooves are concentric with the rotation center hole. The first fixed base is also provided with a first positioning protrusion that is embedded in the positioning groove and faces the first embedded groove. The first positioning protrusion has a first through hole for the central shaft to pass through at the position corresponding to the rotation center hole. And / or, the second fixed base is also provided with a second positioning protrusion that is embedded in the positioning groove and faces the second embedded groove. The second positioning protrusion has a second through hole for the central shaft to pass through at the position corresponding to the rotation center hole.

6. The folding mechanism according to claim 5, characterized in that: The first fixed seat has a first threaded hole that communicates with the first embedded groove at the position corresponding to the arc-shaped limiting hole. The second fixed seat has a second threaded hole that communicates with the second embedded groove at the position corresponding to the arc-shaped limiting hole. The limiting shaft is a locking bolt, and the two ends of the limiting shaft are respectively threaded into the first threaded hole and the second threaded hole.

7. The folding mechanism according to claim 4, characterized in that: The outer contour of the first embedding groove is the same as the outer contour of the press cover, and the outer contour of the second embedding groove is the same as the outer contour of the locking cover.

8. The folding mechanism according to claim 4, characterized in that: A thrust pad is provided between the connection end of the first fixed seat and the swing component and between the connection end of the second fixed seat and the swing component.

9. A folding armrest, characterized in that, The invention includes a handrail frame and a folding mechanism as described in any one of claims 1 to 8, which is mounted and fixed on the handrail frame. The swinging component is a movable handrail, and the fixed component is fixedly mounted on the handrail frame.

10. A treadmill, characterized in that, Including the folding armrest as described in claim 9.

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