Belt tightness adjusting structure

Abstract

The utility model relates to a belt tightness adjusting structure, belongs to the technical field of fitness equipment, and particularly provides a belt tightness adjusting structure which comprises a belt pressing wheel fixing seat and a belt pressing wheel, the belt pressing wheel fixing seat is provided with a limiting groove, and the belt pressing wheel is arranged in the limiting groove. The pinch roller can move up and down on the pinch roller fixing seat along the limiting groove; the pinch roller height adjusting mechanism comprises a magnetic-force-adjustable electromagnet fixed to the top of the limiting groove, and an adjusting block made of a ferromagnetic material is arranged on the pinch roller, so that the position of the adjusting block in the limiting groove can be adjusted through the change of the magnetic force of the electromagnet; and the limiting groove is internally provided with the pinch roller, so that the pinch roller can move up and down on the pinch roller fixing seat along the limiting groove, and a more convenient, intelligent and durable adjusting function can be provided.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, and specifically provides a belt tightness adjustment structure. Background Art

[0002] Belt drives are widely used in indoor exercise bikes, which are a relatively common and technically mature sports fitness equipment.

[0003] The traditional belt tightness is adjusted before assembly and cannot well meet the needs of people with different strengths for belt tightness. Although there are some devices in the prior art that can adjust the belt tightness, their adjustment devices are generally relatively single. However, the fitness equipment market is highly competitive. Therefore, it is necessary to innovate a new belt tightness adjustment structure with more functions and convenient use as the key point of product differentiation. By providing more convenient, intelligent, and durable adjustment functions, it can attract more consumers and enhance brand competitiveness. Summary of the Invention

[0004] The purpose of the present invention is to provide a belt tightness adjustment structure. By innovating a new belt tightness adjustment structure with more functions and convenient use as the key point of product differentiation. By providing more convenient, intelligent, and durable adjustment functions, it can attract more consumers and enhance brand competitiveness. The specific scheme is as follows:

[0005] A belt tightness adjustment structure, comprising:

[0006] A belt pressing wheel fixing seat: A limiting groove is provided on the belt pressing wheel fixing seat.

[0007] A belt pressing wheel: The belt pressing wheel is arranged in the limiting groove so that the belt pressing wheel can move up and down on the belt pressing wheel fixing seat along the limiting groove.

[0008] A belt pressing wheel height adjustment mechanism: The belt pressing wheel height adjustment mechanism includes an electromagnet with adjustable magnetism fixed at the top of the limiting groove. An adjustment block made of ferromagnetic material is provided on the belt pressing wheel, so that the position of the adjustment block in the limiting groove can be adjusted by changing the magnetism of the electromagnet.

[0009] A belt pressing wheel is provided in the limiting groove so that the belt pressing wheel can move up and down on the belt pressing wheel fixing seat along the limiting groove.

[0010] Further, an adjustable rheostat is connected to the electromagnet, so that the magnetism of the electromagnet can be adjusted by adjusting the resistance of the adjustable rheostat, and further the distance of the belt pressing wheel in the limiting groove can be adjusted.

[0011] Further, a pressure roller is connected to the adjusting block, enabling the pressure roller to rotate on the adjusting block. The resistance of the adjustable rheostat can be adjusted to regulate the magnetic force of the electromagnet, thereby changing the position of the adjusting block and further adjusting the position of the pressure roller in the limiting groove.

[0012] The shape of the adjusting block can be selected according to requirements and the shape of the limiting groove, as long as it is ensured that the position of the adjusting block in the limiting groove can be affected by the electromagnet.

[0013] Further, one end of the adjusting block is connected with a pressure roller, enabling the pressure roller to rotate at one end of the adjusting block. The connection method can be using a rotating shaft connection, or a connecting seat is fixed below the adjusting block at its lower part, enabling it to be connected to one end of the adjusting block through the connecting seat. It only needs to ensure that the pressure roller is fixed at one end of the adjusting block.

[0014] Further, the material of the adjusting block is a magnet. The adjusting block is a long strip magnet. One pole of the long strip magnet is set opposite to the electromagnet. The electromagnet is an electromagnet with changeable magnetic poles, enabling the position of the long strip magnet in the limiting groove to be adjusted by the electromagnet.

[0015] Further, two baffles are arranged in parallel on the pressure roller fixing seat. Two long strip through holes are vertically opened on both baffles as the limiting groove. The adjusting block is a long strip magnet. Limiting blocks are arranged on both sides at one end of the adjusting block, enabling the adjusting block to be installed into the limiting groove through the limiting blocks, enabling the adjusting block to move up and down in the limiting groove. The other end of the adjusting block is connected with a pressure roller through a rotating shaft, enabling the pressure roller to rotate at one end of the adjusting block.

[0016] Further, the adjustable rheostat includes: several resistors connected in series. Several magnetically controlled switches provided with magnets are connected in parallel on the several resistors connected in series. A slide rail is arranged at the top of the magnetically controlled switch. One end of the slide rail is connected with a tension spring. The other end of the tension spring is connected with a switch magnet. The switch magnet is slidably connected to the bottom of the slide rail. A steel cable is arranged at the other end of the switch magnet. The steel cable is connected with a switch control knob through a pulley group, enabling the length of the steel cable to be adjusted by rotating the switch control knob to adjust the position of the switch magnet on the slide rail, enabling the switch magnet to slide on the slide rail, and enabling the closing of the magnetically controlled switch to be controlled under the action of magnetic force to reduce the resistance, thereby controlling the magnitude of the magnetic force of the electromagnet.

[0017] Further, the adjustable rheostat includes three resistors connected in series. Magnetically controlled switches provided with magnets are respectively connected in parallel to two adjacent resistors among the three resistors connected in series, enabling the closing of the magnetically controlled switch to be controlled by the sliding of the switch magnet on the slide rail.

[0018] Furthermore, the power supply of the electromagnet can be a battery or an external power supply, and its specific power supply method can be selected according to needs.

[0019] Compared with the prior art, a belt tightness adjustment structure of the present utility model has the following beneficial effects:

[0020] This application innovates a new belt tightness adjustment structure with more functions and convenient use as the key point of product differentiation. By providing more convenient, intelligent and durable adjustment functions, it can attract more consumers and enhance brand competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of Embodiment 1 of the present utility model;

[0022] Figure 2 is a schematic structural diagram of Embodiment 2 of the present utility model;

[0023] Wherein, 1. Pressing wheel fixing seat, 2. Limiting groove, 3. Pressing wheel, 4. Electromagnet, 5. Adjusting block, 6. Resistor, 7. Magneto switch, 8. Slide rail, 9. Tensile spring, 10. Switch magnet, 11. Cable, 12. Pulley group, 13. Switch control knob, A. Driving wheel, B. Driven wheel, C. Belt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] Embodiment 1: A belt tightness adjustment structure, comprising:

[0027] Pressing wheel fixing seat 1: A limiting groove 2 is provided on the pressing wheel fixing seat 1,

[0028] Pressure roller 3: The pressure roller 3 is arranged in the limiting groove 2, so that the pressure roller 3 can move up and down along the limiting groove 2 on the pressure roller fixing seat 1;

[0029] Height adjusting mechanism of the pressure roller 3: The height adjusting mechanism of the pressure roller 3 includes an electromagnet 4 with adjustable magnetism fixed at the top of the limiting groove 2. An adjusting block 5 made of ferromagnetic material is arranged on the pressure roller 3, so that the position of the adjusting block 5 in the limiting groove 2 can be adjusted by the change of the magnetism of the electromagnet 4.

[0030] The pressure roller 3 is arranged in the limiting groove 2, so that the pressure roller 3 can move up and down along the limiting groove 2 on the pressure roller fixing seat 1;

[0031] An adjustable rheostat is connected to the electromagnet 4, and the pressure roller 3 is connected to the adjusting block 5, so that the pressure roller 3 can rotate on the adjusting block 5. The resistance 6 of the adjustable rheostat can be adjusted to adjust the magnetism of the electromagnet 4, change the position of the adjusting block 5, and further adjust the position of the pressure roller 3 in the limiting groove 2;

[0032] One end of the adjusting block 5 is connected to the pressure roller 3, so that the pressure roller 3 can rotate at one end of the adjusting block 5. The connection method can be using a rotating shaft connection, or a connecting seat is fixed below the adjusting block 5, so that it can be connected to one end of the adjusting block 5 through the connecting seat. It only needs to ensure that the pressure roller 3 is fixed at one end of the adjusting block 5. The material of the adjusting block 5 is a magnet. The adjusting block 5 is a long strip magnet. One pole of the long strip magnet is set opposite to the electromagnet 4. The electromagnet 4 is an electromagnet with changeable magnetic poles, so that the position of the long strip magnet in the limiting groove 2 can be adjusted by the electromagnet 4;

[0033] Two baffles are arranged in parallel on the pressure roller fixing seat 1. Two long strip through holes are vertically opened on the two baffles as the limiting groove 2. The adjusting block 5 is a long strip magnet. Limiting blocks are arranged on both sides of one end of the adjusting block 5, so that the adjusting block 5 can be installed into the limiting groove 2 through the limiting blocks, and the adjusting block 5 can move up and down in the limiting groove 2. The other end of the adjusting block 5 is connected to the pressure roller 3 through a rotating shaft, so that the pressure roller 3 can rotate at one end of the adjusting block 5.

[0034] Embodiment 2, this embodiment is a further improvement based on Embodiment 1:

[0035] The adjustable rheostat is connected in series with the electromagnet 4 through a power supply. The adjustable rheostat includes: three resistors 6 connected in series, and magnetically controlled switches 7 provided with magnets are respectively connected in parallel to two adjacent resistors 6 among the three resistors 6 connected in series. A slide rail 8 is provided at the top of the magnetically controlled switch 7. One end of the slide rail 8 is connected to a tension spring 9, and the other end of the tension spring 9 is connected to a switch magnet 10. The switch magnet 10 is slidably connected to the bottom of the slide rail 8. A steel cable 11 is provided at the other end of the switch magnet 10. The steel cable 11 is connected to a switch control knob 13 through a pulley block 12, so that the length of the steel cable 11 can be adjusted by rotating the switch control knob 13 to adjust the position of the switch magnet 10 on the slide rail 8, and the switch magnet 10 can slide on the slide rail 8, and the closing of the magnetically controlled switch 7 can be controlled under the action of magnetic force to reduce the resistor 6, thereby controlling the magnetic force of the electromagnet 4.

[0036] In addition, the following technical solutions are further disclosed based on the above embodiments of the utility model;

[0037] The solution of this application is only one of many solutions. The shape of the adjusting block 5 can be selected according to needs and the shape of the limiting groove 2, as long as it is ensured that the position of the adjusting block 5 in the limiting groove 2 can be affected by the electromagnet 4.

[0038] The solution of this application is only one of many solutions. For the electromagnet 4, as long as a suitable electromagnet 4 that can meet the requirements of having an adjustable rheostat and being able to change the magnetic pole of the magnet is selected.

[0039] The number of the resistors 6 of the adjustable resistor 6 and the number of the magnetically controlled switches 7 can be selected according to needs.

[0040] The using method of the utility model is as follows:

[0041] The belt is located on the driving wheel A and the driven wheel B. The belt pressing wheel fixing seat 1 is fixed on the upper part of the belt C between the driving wheel A and the driven wheel B, so that the belt pressing wheel 3 is in contact with the belt C. When it is desired to loosen the belt C, the switch control knob 13 is rotated to the loose position. The steel cable 11 wound inside the switch control knob 13 decreases, and the total length of the steel cable 11 increases. Under the pulling action of the tension spring 9, the switch magnet 10 moves forward to the corresponding position of the magnet-equipped magnetic control switch 7. Under the magnetic force, the magnet-equipped magnetic control switch 7 closes, the resistance 6 in the circuit decreases, and the current increases. The magnetic force of the electromagnet 4 increases, attracting the magnet of the belt pressing wheel 3 to move upward, driving the belt pressing wheel 3 to move upward, and the belt C becomes loose. The driving wheel A can rotate with a smaller force. When it is desired to make the belt C even looser, similarly, the switch control knob 13 is rotated to an even looser position. The switch magnet 10 moves forward to the corresponding position of the magnet-equipped magnetic control switch 7. The magnet-equipped magnetic control switch 7 closes, the current increases, the magnetic force of the electromagnet 4 increases, the magnet of the belt pressing wheel 3 and the belt pressing wheel 3 continue to move upward, the belt C becomes even looser, and the driving wheel A can rotate with a smaller force. Conversely, when it is desired to tighten the belt C, the switch control knob 13 is rotated to the tight position. The steel cable 11 wound inside the switch control knob 13 increases, the total length of the steel cable 11 decreases, overcoming the pulling force of the tension spring 9, the resistance 6 in the circuit increases, the current decreases, the magnetic force of the electromagnet 4 decreases, so that the belt pressing wheel 3 can drive the adjusting block 5 to move downward under the action of gravity, making the belt C tight, and the driving wheel A can rotate with a greater force;

[0042] If it is desired to further tighten the belt C, the magnetic pole of the electromagnet 4 can be controlled to change from the state of attracting the adjusting block 5 to the state of repelling it, so as to further increase the pressure of the belt pressing wheel 3 on the belt C. Furthermore, the resistance 6 can be changed by the above means to further adjust the pressure of the belt pressing wheel 3 on the belt C.

[0043] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A belt tightness adjustment structure, characterized in that: include: Belt-pressing roller fixing seat: the belt-pressing roller fixing seat is provided with a limiting groove; The belt-pressing wheel is arranged in the limiting groove, so that the belt-pressing wheel can move up and down on the belt-pressing wheel fixing seat along the limiting groove; The belt-pressing roller height adjustment mechanism includes an electromagnet with adjustable magnetic force fixed on the top of the limit slot, and an adjustment block made of ferromagnetic material is provided on the belt-pressing roller, so that the position of the adjustment block in the limit slot can be adjusted by the change of the magnetic force of the electromagnet; A belt-pressing wheel is arranged in the limiting groove, so that the belt-pressing wheel can move up and down on the belt-pressing wheel fixing seat along the limiting groove.

2. A belt tension adjustment structure according to claim 1, characterized in that: The electromagnet is connected with an adjustable rheostat, so that the magnetic force of the electromagnet can be adjusted by adjusting the resistance of the adjustable rheostat.

3. A belt tension adjustment structure according to claim 2, characterized in that: The adjusting block is connected with a belt pressing wheel so that the belt pressing wheel can rotate on the adjusting block.

4. A belt tension adjustment structure according to claim 3, characterized in that: One end of the adjusting block is connected with a belt pressing wheel, so that the belt pressing wheel can rotate at one end of the adjusting block.

5. The belt tension adjustment structure according to claim 1, characterized in that: The material of the adjustment block is a magnet, and the adjustment block is a long strip magnet. One pole of the long strip magnet is set opposite to the electromagnet, so that the position of the long strip magnet in the limiting groove can be adjusted by the electromagnet.

6. The belt tension adjustment structure according to claim 1, characterized in that: The electromagnet is an electromagnet whose magnetic poles can be changed.

7. A belt tension adjustment structure according to any one of claims 1 to 6, characterized in that: Two baffles are arranged in parallel on the belt-pressing roller fixing seat, and both of the baffles are vertically provided with long strip through holes as limiting grooves. The adjusting block is a long strip magnet, and limiting blocks are arranged on both sides of one end of the adjusting block so that the adjusting block can be installed into the limiting groove through the limiting blocks, so that the adjusting block can move up and down in the limiting groove, and the other end of the adjusting block is connected to the belt-pressing roller through a rotating shaft, so that the belt-pressing roller can rotate at one end of the adjusting block.

8. The belt tension adjustment structure according to claim 2, characterized in that: The adjustable rheostat comprises: a plurality of resistors connected in series, a plurality of magnetically controlled switches provided with magnets are connected in parallel to the plurality of resistors connected in series, a slide rail is provided on the top of the magnetically controlled switch, a tension spring is connected to one end of the slide rail, a switch magnet is connected to the other end of the tension spring, the switch magnet is slidably connected to the bottom of the slide rail, a steel cable is provided at the other end of the switch magnet, the steel cable is connected to a switch control knob through a pulley block, so that the length of the steel cable can be controlled by rotating the switch control knob to adjust the position of the switch magnet on the slide rail, so that the switch magnet can slide on the slide rail to control the closing of the magnetically controlled switch under the action of magnetic force to reduce the resistance, thereby controlling the magnetic force of the electromagnet.

9. A belt tightness adjustment structure according to claim 2, characterized in that: The adjustable rheostat comprises three resistors connected in series, wherein two adjacent resistors of the three resistors in series are respectively connected in parallel with a magnetically controlled switch provided with a magnet, so that the closing of the magnetically controlled switch can be controlled by sliding the switch magnet on the slide rail.

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