Wear-resistant roller of treadmill

Abstract

The utility model discloses a wear-resistant roller of a treadmill, and belongs to the technical field of treadmills, the wear-resistant roller of the treadmill comprises a roller shaft, and four fan-shaped long grooves and four first fan-shaped long blocks are uniformly distributed on the circumference of the roller shaft; the roller shaft is sleeved with a wear-resisting body, four second fan-shaped long blocks are installed on the inner circumference of the wear-resisting body, and the second fan-shaped long blocks are evenly distributed on the circumference; and the second fan-shaped long block is in sliding connection with the fan-shaped long groove. The wear resistance, safety and user experience of the treadmill under high load can be improved.

Description

TECHNICAL FIELD

[0001] The application relates to a running machine wear-resistant roller, and belongs to the technical field of running machines. BACKGROUND

[0002] With the popularization of fitness consciousness, more and more people choose to use running machines for exercise. The friction between the roller and the running belt is one of the key factors to ensure the normal operation of the running machine. Although the surface material of the existing roller has certain wear resistance and grip, under high load conditions, especially for users with heavy weight, the friction may decrease sharply, and the existing running machine is prone to overload and skidding when used at high intensity or for a long time, which not only affects the user's exercise experience, but also may cause safety hazards. Overload and skidding refer to when the user's weight exceeds the designed carrying capacity of the running machine, the friction between the roller and the running belt is not enough to support the user's exercise demand, resulting in the sliding of the running belt, unstable speed or even stop. This phenomenon not only interrupts the user's training, but also may cause accidents such as falling.

[0003] In order to increase the wear resistance, safety and user experience of the running machine, a running machine wear-resistant roller is essential. CONTENT OF THE INVENTION

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a running machine wear-resistant roller which can increase the wear resistance, safety and user experience of the running machine under high load.

[0005] The technical solution adopted by the present application to solve the existing problems is:

[0006] A running machine wear-resistant roller, comprising a roller shaft, the roller shaft is circumferentially provided with four fan-shaped long grooves and four first fan-shaped long blocks;

[0007] A wear-resistant body is sleeved on the roller shaft, four second fan-shaped long blocks are mounted on the inner circumference of the wear-resistant body, and the second fan-shaped long blocks are circumferentially distributed;

[0008] The second fan-shaped long blocks are in sliding connection with the fan-shaped long grooves.

[0009] Preferably, the roller shaft is provided with a main air hole, a plurality of branch air holes are arranged on each fan-shaped long groove, and one end of the branch air hole is in communication with the main air hole.

[0010] Preferably, the second fan-shaped long block is provided with a plurality of convex cylinders, and the convex cylinders are provided with through holes; the second fan-shaped long block is also provided with a plurality of sliding holes, and one end of the sliding hole is in communication with the through hole.

[0011] Preferably, the wear-resistant body is provided with a plurality of elastic membranes and elastic membrane cavities, the elastic membranes are recessed into the elastic membrane cavities, and the convex cylinders extend into the elastic membrane cavities.

[0012] Preferably, the other end of the sliding hole is communicated with the other end of the gas distribution hole; a telescopic rod is mounted in the sliding hole, one end of the telescopic rod is slidingly connected with the sliding hole and the through hole respectively, and the other end of the telescopic rod extends into the elastic membrane cavity and is fixedly connected with the elastic membrane.

[0013] Preferably, a reset spring is sleeved on the telescopic rod, and the reset spring is fixedly connected with the telescopic rod and the sliding hole respectively.

[0014] Preferably, one end of the roller shaft is provided with a first blocking ring, and the other end of the roller shaft is sleeved with a second blocking ring, a pneumatic valve is mounted on the second blocking ring, and the roller shaft is further provided with a switch hole, the switch hole penetrates the main gas hole, and a valve rod of the pneumatic valve extends into the switch hole.

[0015] Preferably, the wear-resistant body and the elastic membrane are made of rubber material.

[0016] Compared with the prior art, the application has the beneficial effects that:

[0017] The modular design of the application, the wear-resistant body with the second fan-shaped long block only needs to be gently pushed in or pulled out on the roller shaft to complete the installation or disassembly, which is convenient to disassemble and assemble or maintain, and if a part is damaged, it can be replaced alone without the need to replace all parts, thereby saving cost.

[0018] The design of the elastic membrane greatly increases the friction between the wear-resistant roller and the running belt, so that the treadmill is not prone to overload and skidding when used at high intensity or for a long time, and the wear resistance, safety and user experience of the treadmill are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a wear-resistant roller structure diagram of the application;

[0020] Figure 2 It is a roller shaft structure diagram of the wear-resistant roller of the application;

[0021] Figure 3 It is a second fan-shaped long block structure diagram of the wear-resistant roller of the application;

[0022] Figure 4 It is a partial cross-sectional front view of the wear-resistant roller of the application;

[0023] Figure 5 It is a partial enlarged view of A in the partial cross-sectional front view of the wear-resistant roller of the application.

[0024] In the drawings:

[0025] 1. Roller shaft; 11. Main air hole; 12. Switch hole; 13. Sector-shaped long slot; 14. Air distribution hole; 15. First sector-shaped long block; 16. First retaining ring; 2. Second sector-shaped long block; 21. Convex cylinder; 22. Through hole; 23. Sliding hole; 24. Telescopic rod; 25. Return spring; 3. Wear-resistant body; 31. Elastic diaphragm; 32. Elastic diaphragm cavity; 4. Second retaining ring; 5. Pneumatic valve; 51. Valve stem. Detailed Implementation

[0026] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0027] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] like Figures 1-5 The illustrated wear-resistant roller for a treadmill includes a roller shaft 1. The roller shaft 1 has four evenly distributed fan-shaped grooves 13 and four first fan-shaped blocks 15 around its circumference. One end of the roller shaft 1 is provided with a first retaining ring 16 for axial positioning. A wear-resistant body 3 is mounted on the roller shaft 1. Four second fan-shaped blocks 2 are evenly distributed around the inner circumference of the wear-resistant body 3. The second fan-shaped blocks 2 are slidably connected to the fan-shaped grooves 13.

[0030] The drum shaft 1 is provided with a main air hole 11 connected with compressed air, and each fan-shaped long slot 13 is provided with a plurality of branch air holes 14, one end of which is communicated with the main air hole 11.

[0031] The second fan-shaped long block 2 is provided with a plurality of convex cylinders 21, and the convex cylinders 21 are provided with through holes 22. The second fan-shaped long block 2 is also provided with a plurality of sliding holes 23, one end of which is communicated with the through holes 22.

[0032] The wear-resistant body 3 is provided with a plurality of elastic membranes 31 and elastic membrane cavities 32, and the elastic membranes 31 are recessed into the elastic membrane cavities 32. The convex cylinders 21 extend into the elastic membrane cavities 32, and can limit the axial and circumferential displacement of the second fan-shaped long block 2.

[0033] The other end of the sliding hole 23 is communicated with the other end of the branch air hole 14. The sliding hole 23 is installed with a telescopic rod 24, one end of which is respectively slidably connected with the sliding hole 23 and the through hole 22, and the other end of the telescopic rod 24 extends into the elastic membrane cavity 32 and is fixedly connected with the elastic membrane 31.

[0034] The telescopic rod 24 is sleeved with a reset spring 25, which is fixedly connected with the telescopic rod 24 and the sliding hole 23.

[0035] One end of the drum shaft 1 is provided with a first stop ring 16, and the other end is sleeved with a second stop ring 4, and the second stop ring 4 is installed with a pneumatic valve 5. The other end of the drum shaft 1 is also provided with a switch hole 12, which penetrates the main air hole 11. The valve stem 51 of the pneumatic valve 5 extends into the switch hole 12, and the first stop ring 16 and the second stop ring 4 are used for axial positioning.

[0036] The wear-resistant body 3 and the elastic membrane 31 are made of rubber material, which has good softness, wear resistance, tear resistance, good elastic recovery, strong grip, and certain shock absorption effect.

[0037] The wear-resistant roller is modularly designed, with the roller shaft 1, the second sector-shaped long block 2, and the wear-resistant body 3 being independent units. During installation, the second sector-shaped long block 2 is first installed on the inner circumference of the wear-resistant body 3. Since the second sector-shaped long block 2 is slidably connected to the sector-shaped long groove 13, the wear-resistant body 3 with the second sector-shaped long block 2 is aligned with the sector-shaped long groove 13 on the roller shaft 1 and pushed in from the end of the roller shaft 1 without the first retaining ring 16 until one end of the wear-resistant body 3 abuts against the first retaining ring 16. Then, the second retaining ring 4 is installed on the end without the first retaining ring 16, and the second retaining ring 4 abuts against the other end of the wear-resistant body 3. Finally, the pneumatic valve 5 is installed on the second retaining ring 4, and the valve stem 51 of the pneumatic valve 5 extends into the switch hole 12. The second retaining ring 4 and the pneumatic valve 5 cooperate to complete the axial positioning of the wear-resistant body 3 on the roller shaft 1. The wear-resistant body 3, equipped with the second sector-shaped long block 2, can be installed or removed from the roller shaft 1 by simply pushing it in or pulling it out. This makes installation and removal convenient, improving assembly or maintenance efficiency. If a part is damaged, it can be removed and replaced individually, without having to replace all of them, thus saving costs.

[0038] like Figure 4 As shown, when the treadmill is used at high intensity or for a long time, the pneumatic valve 5 is activated, the valve stem 51 moves upward, opening the main air port 11. Compressed air enters through the main air port 11 and then enters each of the branch air ports 14. From the branch air ports 14, it enters the corresponding sliding holes 23. The compressed air acts on the telescopic rod 24 in the sliding hole 23, pushing the telescopic rod 24 upward. The return spring 25 is compressed, and the telescopic rod 24 pushes the concave elastic membrane 31 out of the outer surface of the wear-resistant body 3, so that the elastic membrane 31 comes into contact with the running belt of the treadmill. This greatly increases the friction between the wear-resistant roller and the running belt, making it less prone to overload and slippage when the treadmill is used at high intensity or for a long time. This improves the wear resistance, safety, and user experience of the treadmill. When the above-mentioned function of increasing wear resistance is not needed, the pneumatic valve 5 is stopped, the valve stem 51 moves downward, closes the main air port 11, thereby stopping the supply of compressed air, the return spring 25 is reset, and the telescopic rod 24 is pulled downward, and the telescopic rod 24 pulls the elastic diaphragm 31 back to the concave state.

[0039] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A wear-resistant roller for a treadmill, characterized in that: Includes a roller shaft (1), which has four fan-shaped long grooves (13) and four first fan-shaped long blocks (15) evenly distributed around its circumference; The roller shaft (1) is fitted with a wear-resistant body (3), and four second sector-shaped long blocks (2) are installed on the inner circumference of the wear-resistant body (3), and the second sector-shaped long blocks (2) are evenly distributed around the circumference; The second sector-shaped long block (2) is slidably connected to the sector-shaped long groove (13).

2. The wear-resistant roller for a treadmill according to claim 1, characterized in that: The roller shaft (1) is provided with a main air hole (11), which is connected to compressed air. Each fan-shaped long slot (13) is provided with multiple air distribution holes (14), one end of which is connected to the main air hole (11).

3. The wear-resistant roller for a treadmill according to claim 2, characterized in that: The second sector-shaped long block (2) is provided with multiple convex cylinders (21), and the convex cylinders (21) are provided with through holes (22); the second sector-shaped long block (2) is also provided with multiple sliding holes (23), one end of the sliding hole (23) is connected to the through hole (22).

4. The wear-resistant roller for a treadmill according to claim 3, characterized in that: The wear-resistant body (3) is provided with multiple elastic membranes (31) and elastic membrane cavities (32), the elastic membranes (31) are recessed into the elastic membrane cavities (32); the convex cylinder (21) extends into the elastic membrane cavity (32).

5. A wear-resistant roller for a treadmill according to claim 4, characterized in that: The other end of the sliding hole (23) is connected to the other end of the air distribution hole (14); a telescopic rod (24) is installed in the sliding hole (23), one end of the telescopic rod (24) is slidably connected to the sliding hole (23) and the through hole (22) respectively, and the other end of the telescopic rod (24) extends into the elastic membrane cavity (32) and is fixedly connected to the elastic membrane (31).

6. A wear-resistant roller for a treadmill according to claim 5, characterized in that: A return spring (25) is fitted on the telescopic rod (24), and the return spring (25) is fixedly connected to the lower part of the telescopic rod (24) and the upper part of the sliding hole (23).

7. A wear-resistant roller for a treadmill according to claim 6, characterized in that: One end of the roller shaft (1) is provided with a first retaining ring (16), and the other end is provided with a second retaining ring (4). A pneumatic valve (5) is installed on the second retaining ring (4). The other end of the roller shaft (1) is also provided with a switch hole (12). The switch hole (12) passes through the main air hole (11), and the valve stem (51) of the pneumatic valve (5) extends into the switch hole (12).

8. A wear-resistant roller for a treadmill according to claim 7, characterized in that: Both the wear-resistant body (3) and the elastic membrane (31) are made of rubber.

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