Flywheel damping structure of spinning

Abstract

The utility model provides a flywheel damping structure of a spinning, relates to the technical field of fitness equipment, and solves the problems that the flywheel of the existing spinning generates abnormal riding sound during use, the service life of a flywheel part structure is shortened, and transportation, use and after-sales maintenance are not facilitated. The flywheel damping device comprises a flywheel body and a flywheel shaft arranged on the flywheel body, the left end and the right end of the flywheel shaft are installed on a left frame metal plate and a right frame metal plate of a frame body respectively, and a set of flywheel damping shaft sleeves are arranged between the two ends of the flywheel shaft and the installation position of the left frame metal plate and the installation position of the right frame metal plate. The two flywheel damping shaft sleeves are arranged on the flywheel shaft in a sleeving mode. The utility model has the beneficial effects that the assembly mode is simple and convenient, and the production cost is not increased; the service life of the spinning is prolonged; and the after-sale and maintenance times are reduced.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, specifically to a shock absorption structure for the flywheel of a stationary bike. Background Technology

[0002] Currently, the weight of the flywheels on most indoor bicycles is between 3KG and 15KG. The heavy flywheels are prone to wobbling during manufacturing, especially during transportation, due to handling, drops, and other actions. This can lead to bearing damage, manifesting as abnormal noises from the front of the indoor bicycle during riding. Even if the bearings are not damaged or abnormal noises occur during transportation, the lifespan of the flywheel structure will be shortened after unpacking and use. This places high demands on transportation methods and is not conducive to transportation, use, and after-sales maintenance. Utility Model Content

[0003] The purpose of this invention is to solve the problem that the current flywheel shaft and the frame sheet metal are in metal-to-metal contact, and the flywheel assembly will cause collision vibration when the bike is transported, which will damage the bearing, produce abnormal noise when riding the exercise bike, and shorten the service life of the flywheel structure, which is not conducive to transportation, use and after-sales maintenance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The freewheel shock absorption structure of a stationary bicycle is characterized by comprising a freewheel body and a freewheel shaft disposed on the freewheel body. The left and right ends of the freewheel shaft are respectively mounted on the left and right sheet metal of the bicycle frame body. A set of freewheel shock absorption bushings is disposed between the two ends of the freewheel shaft and the mounting points of the left and right sheet metal of the bicycle frame body, and the two freewheel shock absorption bushings are sleeved on the freewheel shaft.

[0006] A further improvement is that a gasket fitted on the flywheel shaft is provided between the flywheel damping bushing on the right and the flywheel body.

[0007] A further improvement is that a first fixing nut with a threaded connection to the left end of the flywheel shaft is provided on the left side of the left frame sheet metal.

[0008] A further improvement is that a second fixing nut with a threaded connection to the right end of the flywheel shaft is provided on the right side of the right frame sheet metal.

[0009] A further improvement is that: a left sheet metal shaft mounting groove is provided on the left frame sheet metal, and the flywheel shock absorber bushing on the left side is located on the left sheet metal shaft mounting groove; a right sheet metal shaft mounting groove is provided on the right frame sheet metal, and the flywheel shock absorber bushing on the right side is located on the right sheet metal shaft mounting groove.

[0010] A further improvement is that the flywheel damping bushing is stepped.

[0011] A further improvement is that the small-diameter ends of the two flywheel damping bushings are respectively engaged in the left sheet metal shaft mounting slot and the right sheet metal shaft mounting slot.

[0012] A further improvement is that the flywheel damping bushing is a rubber bushing.

[0013] A further improvement is that the flywheel damping bushing is made by mold.

[0014] Compared with existing technologies, the above technical solution has the following advantages:

[0015] The assembly method is simple. During the production and assembly process, you only need to put the flywheel shock absorber bushing on the flywheel shaft and then snap the stepped part of the flywheel shock absorber bushing into the frame sheet metal mounting slot. It is easy for workers to operate, does not consume time, and does not increase production costs.

[0016] This reduces vibration transmitted from the flywheel to the frame and damage to the bearings during transportation and handling, lowers the defect rate caused by transportation damage, extends the service life of the exercise bike, reduces the number of after-sales repairs, reduces after-sales costs, and increases customer satisfaction.

[0017] The manufacturing process is simple; the rubber flywheel shock-absorbing bushing is made by mold, which can ensure dimensional stability during mass production. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is an exploded three-dimensional structural diagram of the present invention;

[0021] Figure 3 This is a top-view structural diagram of the exploded structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of this utility model on a stationary bike;

[0023] Figure 5 This is a structural schematic diagram of the present invention on a stationary bicycle from another angle.

[0024] Explanation of reference numerals in the attached drawings: 1. Flywheel body; 2. Flywheel shaft; 3. Flywheel shock absorber bushing; 4. First fixing nut; 5. Washer; 6. Second fixing nut; 7. Left frame sheet metal; 71. Left sheet metal shaft mounting slot; 8. Right frame sheet metal; 81. Right sheet metal shaft mounting slot. Detailed Implementation

[0025] See Figures 1-5 As shown, the technical solution adopted in this specific embodiment is: a motion bike flywheel shock absorption structure, including a flywheel body 1 and a flywheel shaft 2 disposed on the flywheel body 1. The left and right ends of the flywheel shaft 2 are respectively installed on the left frame sheet metal 7 and the right frame sheet metal 8 of the frame body 9. A set of flywheel shock absorption bushings 3 are provided between the two ends of the flywheel shaft 2 and the installation points of the left frame sheet metal 7 and the right frame sheet metal 8. Two flywheel shock absorption bushings 3 are sleeved on the flywheel shaft 2.

[0026] Among them, the flywheel damping bushing 3 on the right side is provided with a gasket 5 sleeved on the flywheel shaft 2 between it and the flywheel body.

[0027] The left side of the left frame sheet metal 7 is provided with a first fixing nut 4 that is threaded to the left end of the flywheel shaft 2.

[0028] The right side of the right frame sheet metal 8 is provided with a second fixing nut 6 that is threaded to the right end of the flywheel shaft 2.

[0029] The left frame sheet metal 7 has a left sheet metal shaft mounting groove 71, and the flywheel shock absorber bushing 3 on the left side is located on the left sheet metal shaft mounting groove 71; the right frame sheet metal 8 has a right sheet metal shaft mounting groove 81, and the flywheel shock absorber bushing 3 on the right side is located on the right sheet metal shaft mounting groove 81.

[0030] The flywheel damping bushing 3 is stepped.

[0031] The small-diameter ends of the two flywheel damping bushings 3 are respectively inserted into the left sheet metal shaft mounting groove 71 and the right sheet metal shaft mounting groove 81.

[0032] The flywheel damping bushing 3 is a rubber bushing.

[0033] The flywheel damping bushing is made using a mold. Using a mold ensures dimensional stability during mass production.

[0034] The installation process of this utility model is as follows: After the flywheel body is assembled, since the lengths of the exposed flywheel shafts on both sides are different, a shim, a flywheel shock absorber bushing, and a second fixing nut need to be installed on the right side, while the flywheel shock absorber bushing and the first fixing nut are directly installed on the left side. Then, the assembled flywheel is assembled onto the frame. It should be noted that during assembly, the small-diameter end of the flywheel shock absorber bushing in the flywheel is inserted into the mounting groove of the frame sheet metal. The assembly method of the flywheel shock absorber bushings on both sides is the same. After assembly, the corresponding fixing nuts 3 are locked into the outside of the sheet metal on both sides of the flywheel.

[0035] The working principle of this invention is as follows: After the flywheel axle and bearing are assembled, a stepped flywheel shock-absorbing bushing is fitted onto the outside of the flywheel axles on both sides. The flywheel shock-absorbing bushing is made of rubber and serves to absorb shock. Before adding the flywheel shock-absorbing bushing, there is metal-to-metal contact between the flywheel axle and the frame sheet metal. When the bike is transported, the flywheel assembly will experience collision vibrations, which can damage the bearings and cause abnormal noises when riding the exercise bike. After adding the flywheel shock-absorbing bushing, the contact between the flywheel axle and the frame sheet metal becomes metal-to-rubber, reducing collisions. The rubber bushing cushions the vibrations generated between the flywheel assembly during transportation. This design protects the flywheel bearing and reduces the defect rate of exercise bikes. The manufacturing process is simple; the rubber flywheel sleeve is molded, ensuring dimensional stability during mass production. Assembly is easy: during production and assembly, simply place the flywheel damping sleeve onto the flywheel axle and then insert the stepped part of the flywheel damping sleeve into the mounting groove of the frame sheet metal. This is easy for workers, saves time, and does not increase production costs. It also reduces after-sales service and repair frequency. Addressing flywheel noise issues requires replacing the flywheel bearing, ensuring that the product arrives at the customer's hands without quality problems caused by transportation damage, reducing after-sales repairs and return frequency.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A flywheel damping structure for a spin bike, characterized by: The flywheel body and the flywheel shaft arranged on the flywheel body, the left and right ends of the flywheel shaft are respectively installed on the left and right frame metal sheets of the frame body, a set of flywheel damping shaft sleeves are arranged between the two ends of the flywheel shaft and the left and right frame metal sheets, and the two flywheel damping shaft sleeves are sleeved on the flywheel shaft.

2. The stationary bicycle flywheel damping structure of claim 1, wherein: The flywheel damping shaft sleeve on the right side is arranged between the flywheel body and the flywheel shaft.

3. The stationary bicycle flywheel damping structure of claim 1, wherein: The left frame metal sheet is provided with a first fixing nut which is screwed on the left end of the flywheel shaft.

4. The stationary bicycle flywheel damping structure of claim 1, wherein: The right frame metal sheet is provided with a second fixing nut which is screwed on the right end of the flywheel shaft.

5. The stationary bicycle flywheel damping structure of claim 1, wherein: The left frame metal sheet is provided with a left metal shaft mounting groove, and the flywheel damping shaft sleeve on the left side is located on the left metal shaft mounting groove; the right frame metal sheet is provided with a right metal shaft mounting groove, and the flywheel damping shaft sleeve on the right side is located on the right metal shaft mounting groove.

6. The spinning flywheel vibration mitigation structure of claim 5, wherein: The flywheel damping shaft sleeve is in a stepped shape.

7. The spinning flywheel vibration mitigation structure of claim 6, wherein: The small-diameter ends of the two flywheel damping shaft sleeves are respectively clamped into the left metal shaft mounting groove and the right metal shaft mounting groove.

8. The spinning flywheel vibration mitigation structure of claim 7, wherein: The flywheel damping shaft sleeve is a rubber sleeve.

9. The spinning flywheel vibration mitigation structure of claim 8, wherein: The flywheel damping shaft sleeve is made of a mold.

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