Exercise bicycle with improved structure

Abstract

The utility model provides a structure improved body -building vehicle, including front support, rear support, pulley and flywheel, the front support and rear support are connected and show X, the lower left side of front support is equipped with recess, and the lower left side of front support forms with the recess and forms the space for avoiding, the bottom of front support is connected with the installation frame, the lower front end of front support is connected with the axle cylinder, the axle cylinder is equipped with the rotating shaft, the rotating shaft passes through pulley, both ends of rotating shaft are connected with the crank, the crank is connected with the footboard, the flywheel rotatably is located in the installation frame, pulley is transmission connection with flywheel.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment, specifically to a fitness bike with an improved structure. Background Technology

[0002] An exercise bike, also known as a stationary bike or indoor bike, is an indoor fitness equipment that simulates outdoor cycling. It improves cardiovascular function, strengthens lower limbs, and effectively burns fat through cycling, making it one of the most popular home aerobic fitness devices. Currently, patent CN205434815U discloses a novel exercise bike, including a first frame and a second frame connected to each other in an "X" shape. The first frame has a seat on top, and the second frame has handlebars on top. The lower part of the first frame includes two connecting plates spaced apart on the left and right sides. A pulley and a wheel are located between the two connecting plates. A pulley axle passes through the middle of the pulley, and both ends of the axle pass through the two connecting plates and are equipped with pedal cranks. The wheel is located below the right side of the pulley and is connected to the two connecting plates via a wheel axle. The wheel has a belt groove, and a belt connects the pulley and the belt groove. The left connecting plate has a belt tensioner.

[0003] In the aforementioned patent, the pulley and inertia wheel are installed between two connecting plates. However, the rear ends of the two connecting plates are relatively thin, which often results in insufficient connection strength between the two connecting plates. Furthermore, in order to meet the installation requirements of the pulley and inertia wheel, multiple installation slots need to be opened on each of the two connecting plates, which further reduces the connection strength of the connecting plates. At the same time, the connecting plates also require more time to process. Utility Model Content

[0004] This utility model provides an improved exercise bike, the main purpose of which is to overcome the problem of insufficient connection strength caused by the use of two connecting plates to install pulleys and inertia wheels in existing exercise bikes.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An improved exercise bike includes a front frame, a rear frame, a pulley, and a flywheel. The front and rear frames are connected in an X-shape. The lower left side of the front frame has a recessed portion, which creates clearance space on the lower left side of the front frame. A mounting frame is connected to the bottom of the front frame, and a seat is provided on the top of the front frame. A front support tube is connected to the bottom of the mounting frame. A cylinder is connected to the lower front end of the front frame, and a rotating shaft passes through the cylinder and is connected to the pulley. Cranks are connected to both ends of the rotating shaft, and foot pedals are connected to the cranks. The flywheel is rotatably mounted in the mounting frame, and the pulley is connected to the flywheel via a drive mechanism. A magnetic resistance device with adjustable distance between the flywheel and the pulley is provided above the flywheel.

[0006] Furthermore, the shaft sleeve is provided with multiple bearings, and the rotating shaft passes through the multiple bearings.

[0007] Furthermore, the left and right sides of the mounting frame are respectively a left connecting plate and a right connecting plate, and a shaft is provided between the left connecting plate and the right connecting plate, the shaft passing through the flywheel.

[0008] Furthermore, one end of the flywheel is provided with a belt connecting part, and a belt is provided between the pulley and the belt connecting part.

[0009] Furthermore, the speed ratio of the pulley and the flywheel is 1:9.5.

[0010] Furthermore, the front and rear supports are foldable.

[0011] Furthermore, the rear support includes two support rods arranged on the left and right, the front support is hinged between the two support rods, a U-shaped angle iron is provided between the two support rods, the front support is located inside the U-shaped angle iron, the U-shaped angle iron is provided with a front through hole and a rear through hole, the front support is provided with a pin hole, and a pin passes through the front support and the front through hole / rear through hole.

[0012] Furthermore, an arc-shaped angle iron is provided between the rear end faces of the two support rods, and a support pad is provided on the top surface of the arc-shaped angle iron. When the front bracket is opened, its rear end face abuts against the support pad.

[0013] Furthermore, the recessed portion is V-shaped.

[0014] Furthermore, the front support is provided with a cover, and the pulley and flywheel are located inside the cover.

[0015] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following advantages: The lower left side of the front support is recessed to provide clearance for the installation of the pulley. Simultaneously, the recessed lower left side of the front support does not affect the connection strength of the front support. The rotating shaft and pulley are jointly supported by the shaft sleeve and the front support, and the flywheel is supported by the mounting frame. The pulley and flywheel are connected and supported by different components, avoiding the problem of insufficient connection strength between the pulley and flywheel. Furthermore, compared with existing exercise bikes, this utility model also saves the processing time for slotting the two connecting plates, thereby improving the production efficiency of the exercise bike. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention.

[0017] Figure 2 This is a structural diagram of the present invention from another angle.

[0018] Figure 3 This is a structural diagram of the front bracket of this utility model.

[0019] Figure 4 This is a structural diagram of the present invention with a cover. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Reference Figures 1 to 3An improved exercise bike includes a front support 1, a rear support 2, a pulley 3, and a flywheel 4. The front support 1 and the rear support 2 are connected in an X-shape. The front support 1 is a square tube, and a V-shaped recess 5 is provided on the lower left side of the front support 1, creating clearance space on the lower left side of the front support 1. A mounting frame 6 is connected to the bottom of the front support 1, and a seat 7 is provided on the top of the front support 1. A front support tube 8 is connected to the bottom of the mounting frame 6, and a cylinder 9 is connected to the lower front end of the front support 1. A rotating shaft 10 passes through the cylinder 9 and is connected to the pulley 3. Cranks 11 are connected to both ends of the rotating shaft 10, and foot pedals 12 are connected to the cranks 11. The flywheel 4 is rotatably mounted in the mounting frame 6, and the pulley 3 is connected to the flywheel 4. A magnetic resistance device 13 is provided above the flywheel 4, allowing adjustment of the distance between the pulley 3 and the flywheel 4.

[0023] Reference Figure 1 and Figure 2 The shaft 9 contains multiple bearings 14, through which the rotating shaft 10 passes. In this embodiment, two bearings 14 are provided, arranged side to side. The left and right sides of the mounting frame 6 are respectively connected by a left connecting plate 15 and a right connecting plate 16. A shaft 17 is provided between the left connecting plate 15 and the right connecting plate 16. The shaft 14 passes through the flywheel 4, which can rotate around the shaft 14. One end of the flywheel 4 is provided with a belt connecting part 18. A belt 19 is provided between the pulley 3 and the belt connecting part 18. When the foot pedal 12 is pressed, the crank 11 drives the rotating shaft 10 and the pulley 3 to rotate, and the pulley 3 then drives the flywheel 4 to rotate through the belt 19. In this embodiment, the speed ratio of the pulley 3 to the flywheel 4 is 1:9.5. This speed ratio can generate the same torque as the damping mechanism composed of multiple pulleys and a flywheel.

[0024] Reference Figures 1 to 3The front support 1 and the rear support 2 are foldable. Specifically, the rear support 2 includes two support rods 20 arranged on the left and right. The front support 1 is hinged between the two support rods 20. A U-shaped angle iron 21 is provided between the two support rods 20. The front support 1 is located inside the U-shaped angle iron 21. The U-shaped angle iron 21 has a front through hole 22 and a rear through hole 23. The front support 1 has a pin hole 24. A pin 25 passes through the front support 1. The pin 25 passes through the pin hole 24, the front through hole 22 / rear through hole 23. When the front bracket 1 and the rear bracket 2 are unfolded and connected in an X shape, the pin 25 passes through the pin hole 24 and the front through hole 22. When the front bracket 1 and the rear bracket 2 need to be folded, the pin 25 is pulled out, and the front bracket 1 and the rear bracket 2 can be folded. After the front bracket 1 and the rear bracket 2 are folded, the pin 25 is passed through the pin hole 24 and the rear through hole 23, and the folded front bracket 1 and the rear bracket 2 are fixed.

[0025] Reference Figure 1 An arc-shaped angle iron 26 is provided between the rear ends of the two support rods 20. A support pad 27, which is a rubber pad, is provided on the top surface of the arc-shaped angle iron 26. When the front support 1 is opened, its rear end face abuts against the support pad 27. The support pad 27 provides support and cushioning for the front support 1 when it is deployed. A rear support tube 28 is provided between the bottoms of the two support rods 20. Both the front support tube 28 and the rear support tube 28 are in contact with the ground, providing support for the front support 1 and the rear support 2, respectively.

[0026] Reference Figure 1 and Figure 4 The front support 1 is provided with a cover 29, the pulley 3 and the flywheel 4 are located inside the cover 29, and both ends of the rotating shaft 10 extend out of the cover 29 and are connected to the crank 11. In this embodiment, a knob 30 is provided between the two support rods 20 to adjust the distance between the magnetic resistance device 13 and the flywheel 4. The knob 30 is connected to the magnetic resistance device 13 by a steel rope. The structure of the magnetic resistance device 13 and the way the knob 30 adjusts the magnetic resistance device 13 are existing technologies and will not be described in detail here. The knob 30 adjusts the distance between the magnetic resistance device 13 and the flywheel 4, thereby adjusting the resistance of the flywheel 4.

[0027] Reference Figures 1 to 3The design principle of this utility model is as follows: During the processing of the front bracket 1, its lower left side is recessed to provide clearance for the installation of the pulley 3. Simultaneously, the recessed lower left side of the front bracket 1 does not affect its connection strength. The rotating shaft 10 and the pulley 3 are jointly supported by the shaft cylinder 9 and the front bracket 1. The flywheel 4 is supported by the left connecting plate 15 and the right connecting plate 16 on the mounting frame 6. The pulley 3 and the flywheel 4 are connected and supported by different components, avoiding the problem of insufficient connection strength between the pulley 3 and the flywheel 4. Furthermore, compared to existing exercise bikes, this utility model saves the processing time required for slotting the two connecting plates in existing exercise bikes, thereby improving the production efficiency of the exercise bike.

[0028] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. An improved exercise bike, characterized in that: The device includes a front bracket, a rear bracket, a pulley, and a flywheel. The front and rear brackets are connected in an X-shape. The lower left side of the front bracket has a recessed portion, which creates clearance space on the lower left side of the front bracket. A mounting frame is connected to the bottom of the front bracket, and a seat is provided on the top of the front bracket. A front support tube is connected to the bottom of the mounting frame. A shaft is connected to the lower front end of the front bracket, and a rotating shaft passes through the shaft and is connected to the pulley. Cranks are connected to both ends of the rotating shaft, and foot pedals are connected to the cranks. The flywheel is rotatably mounted in the mounting frame, and the pulley is connected to the flywheel via a drive mechanism. A magnetic resistance device is provided above the flywheel to adjust the distance between the pulley and the flywheel.

2. The exercise bike with improved structure as described in claim 1, characterized in that: The shaft is equipped with multiple bearings, and the rotating shaft passes through the multiple bearings.

3. The exercise bike with improved structure as described in claim 1, characterized in that: The left and right sides of the mounting frame have a left connecting plate and a right connecting plate, respectively. A shaft is provided between the left and right connecting plates, and the shaft passes through the flywheel.

4. The exercise bike with improved structure as described in claim 1, characterized in that: One end of the flywheel is provided with a belt connection part, and a belt is provided between the pulley and the belt connection part.

5. The exercise bike with improved structure as described in claim 1, characterized in that: The speed ratio of the pulley to the flywheel is 1:9.

5.

6. The exercise bike with improved structure as described in claim 1, characterized in that: The front and rear supports are foldable.

7. The exercise bike with improved structure as described in claim 6, characterized in that: The rear support includes two support rods arranged on the left and right. The front support is hinged between the two support rods. A U-shaped angle iron is provided between the two support rods. The front support is located inside the U-shaped angle iron. The U-shaped angle iron has a front through hole and a rear through hole. The front support has a pin hole. A pin passes through the front support and passes through the pin hole and the front / rear through hole.

8. The exercise bike with improved structure as described in claim 7, characterized in that: An arc angle iron is provided between the rear end faces of the two support rods, and a support pad is provided on the top surface of the arc angle iron. When the front bracket is opened, its rear end face abuts against the support pad.

9. The exercise bike with improved structure as described in claim 1, characterized in that: The recessed portion is V-shaped.

10. The exercise bike with improved structure as described in claim 1, characterized in that: The front support is equipped with a cover, and the pulley and flywheel are located inside the cover.

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