Brake mechanism for exercise bicycle

Abstract

The utility model belongs to the technical field of exercise bikes, and particularly relates to a brake mechanism for an exercise bike, which comprises a base, a rotary drum welded at the top of the base, a frame welded at the top of the rotary drum, a drum shaft mounted in the rotary drum through a bearing, pedals mounted at two ends of the drum shaft, a connecting frame welded on the frame, and a brake rod mounted on the connecting frame. A hollow shell is welded to the tail end of the connecting frame, a sliding column is slidably connected to the left side of the hollow shell, the sliding column penetrates through the hollow shell, and the sliding column penetrates through the rotary drum and is slidably connected with the rotary drum. The hollow shell is additionally arranged on the frame, the inclined plane block which is elastically supported by the spring is arranged in the hollow shell, the sliding column which is inserted into the rotary drum is arranged on the inclined plane block, the brake block is arranged at the tail end of the sliding column, the drum shaft can be locked by utilizing the friction force of the brake block, and a child is prevented from being hurt by hand cranking and pedaling.

Description

Technical Field

[0001] This utility model relates to the field of exercise bike technology, specifically a braking mechanism for exercise bikes. Background Technology

[0002] Fitness equipment is mainly divided into two categories according to its training function: single-function and multi-functional. Commonly used equipment includes rowing machines, exercise bikes, treadmills, and waist trimmers. In daily life, people often use the exercise bikes provided in their neighborhoods for physical exercise.

[0003] A search revealed that invention patent CN103751972A discloses an exercise bicycle. The frame is fixed to the base, the handlebars are installed at the front end of the frame, the seat is fixed at the rear end of the frame, the swivel wheel is connected and fixed to the connection between the base and the frame, and the pedals are installed on the swivel wheel. When using it, one holds the left and right handlebars with both hands and sits on the seat, and pedals with both feet to make cycling motion. This exercise bicycle has a simple structure, small size, is not limited by space or time, is easy to transport, easy to operate, and has a wide range of applications. It is an essential fitness equipment for schools and homes.

[0004] The existing exercise bikes are unsafe because many elderly people bring children to play in the exercise area. Children may crank the pedals with their hands or feet, which could easily cause injury to the child on the other side of the pedal. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a braking mechanism for exercise bikes, which solves the problem of insufficient safety in existing exercise bikes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a braking mechanism for an exercise bike, comprising a base, a rotating cylinder welded to the top of the base, a frame welded to the top of the rotating cylinder, a cylinder shaft mounted inside the rotating cylinder via bearings, foot pedals mounted at both ends of the cylinder shaft, a connecting frame welded to the frame, a hollow shell welded to the end of the connecting frame, a sliding column slidably connected to the left side of the hollow shell and penetrating the hollow shell, the sliding column penetrating the rotating cylinder and slidably connected to the rotating cylinder, a brake block fixedly connected to one end of the sliding column and abutting against the cylinder shaft, a hollow block fixedly connected to the other end of the sliding column, a fixed seat fixedly connected to the top of the frame, a seat cushion slidably connected to the outer side of the fixed seat, a pressure column fixedly connected to the bottom of the seat cushion, the pressure column penetrating the fixed seat and the hollow shell and slidably connected to both the fixed seat and the hollow shell, the end of the pressure column slidably connected to the hollow block, and a lubrication mechanism provided on the inner side of the hollow shell.

[0007] Preferably, a guide block is fixedly connected to the bottom of the hollow block, and a ball bearing is provided at the bottom of the guide block, with the ball bearing in contact with the inner surface of the hollow shell. A guide post is fixedly connected to the inner wall of the hollow shell, the guide post passing through the guide block and slidably connected to the guide block, and a limit block is fixedly connected to the end of the guide post, with the limit block in contact with the guide block. The guide post and guide block provide guidance for the sliding movement of the hollow block under force.

[0008] Preferably, a spring is provided on the inner side of the hollow shell, one end of which is fixedly connected to the hollow block, and the other end of which is fixedly connected to the inner surface of the hollow shell. By providing the spring, the elastic force can be applied to the brake block through the hollow block and the sliding pin, ensuring that it remains in contact with the cylinder shaft.

[0009] Preferably, the lubrication mechanism includes an oil box fixedly connected to the inner wall of the hollow shell. A sliding pin is slidably connected to the bottom of the oil box, and the sliding pin abuts against a sliding column. A pad is fixedly connected to the top of the sliding pin, and a sponge block is contacted at the upper end of the pad and slidably connected to the inner side of the oil box. A protrusion is fixedly connected to the sliding column, and the position of the protrusion corresponds to that of the sliding pin. This lubrication mechanism provides lubrication for the relative sliding points between the sliding column and the hollow shell.

[0010] Preferably, a baffle is fixedly connected to the pin body of the sliding pin, the baffle is in contact with the inner surface of the oil box, a guide rod is fixedly connected to the bottom inner side of the oil box, the guide rod passes through the baffle and is slidably connected to the baffle, and a stop block is fixedly connected to the top of the guide rod. The baffle and guide rod provide guidance for the sliding of the sliding pin under force.

[0011] Preferably, a second spring is sleeved on the outer side of the guide rod. One end of the second spring is fixedly connected to the baffle, and the other end of the second spring is fixedly connected to the stop block. By providing the second spring, the elastic force can be applied to the sliding pin through the baffle.

[0012] Preferably, the bottom of the oil box has a through hole, the sliding pin is located inside the through hole, and the diameter of the through hole is larger than that of the sliding pin. The observation hole facilitates the drainage of lubricating oil from the oil box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model adds a hollow shell to the frame, and sets an inclined block that is elastically supported by a spring inside the hollow shell. A sliding column that is inserted into the rotating cylinder is set on the inclined block, and a brake block is set at the end of the sliding column. The friction of the brake block can lock the cylinder shaft, preventing children from being injured by shaking the pedal by hand or foot.

[0015] 2. This utility model provides a lubrication mechanism on the inner wall of the hollow shell. When the sliding column slides relative to the hollow shell, the sliding pin in the lubrication mechanism will be subjected to the reaction force of the protrusion on the sliding column, thereby retracting and releasing a small amount of lubricating oil, thus lubricating the sliding column and the hollow shell. This reduces the friction between the two and increases the service life. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A partial structural diagram;

[0018] Figure 3 This utility model Figure 1 A front sectional view;

[0019] Figure 4 This utility model Figure 3 Enlarged view of point A;

[0020] Figure 5 This utility model Figure 3 Enlarged view of point B.

[0021] In the diagram: 1. Base; 2. Rotary drum; 3. Frame; 4. Axle; 5. Foot pedal; 6. Connecting frame; 7. Hollow shell; 8. Sliding column; 9. Lubrication mechanism; 10. Brake block; 11. Hollow block; 12. Guide block; 13. Guide column; 14. Limiting block; 15. Ball bearing; 16. Fixed seat; 17. Seat cushion; 18. Pressure column; 19. Spring 1; 91. Oil box; 92. Sliding pin; 93. Pad; 94. Sponge block; 95. Baffle; 96. Guide rod; 97. Stop block; 98. Spring 2; 99. Protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-3A braking mechanism for an exercise bike includes a base 1, a rotating cylinder 2 welded to the top of the base 1, a frame 3 welded to the top of the rotating cylinder 2, a cylinder shaft 4 mounted inside the rotating cylinder 2 via bearings, foot pedals 5 mounted at both ends of the cylinder shaft 4, a connecting frame 6 welded to the frame 3, a hollow shell 7 welded to the end of the connecting frame 6, a sliding column 8 slidably connected to the left side of the hollow shell 7 and passing through the hollow shell 7, the sliding column 8 passing through the rotating cylinder 2 and slidably connected to the rotating cylinder 2, a brake block 10 fixedly connected to one end of the sliding column 8 and abutting against the cylinder shaft 4, a hollow block 11 fixedly connected to the other end of the sliding column 8, a fixed seat 16 fixedly connected to the top of the frame 3, a seat cushion 17 slidably connected to the outside of the fixed seat 16, a pressure column 18 fixedly connected to the bottom of the seat cushion 17, the pressure column 18 passing through the fixed seat 16 and the hollow shell 7 and slidably connected to both the fixed seat 16 and the hollow shell 7, and the end of the pressure column 18 slidably connected to the hollow block 11.

[0024] Please see Figures 3-4 A guide block 12 is fixedly connected to the bottom of the hollow block 11. A ball bearing 15 is provided at the bottom of the guide block 12, and the ball bearing 15 contacts the inner surface of the hollow shell 7. A guide post 13 is fixedly connected to the inner wall of the hollow shell 7. The guide post 13 passes through the guide block 12 and is slidably connected to the guide block 12. A limit block 14 is fixedly connected to the end of the guide post 13, and the limit block 14 contacts the guide block 12. The guide post 13 and the guide block 12 guide the sliding of the hollow block 11 under force. A spring 19 is provided on the inner side of the hollow shell 7. One end of the spring 19 is fixedly connected to the hollow block 11, and the other end of the spring 19 is fixedly connected to the inner surface of the hollow shell 7. The spring 19 allows the elastic force to be applied to the brake block 10 through the hollow block 11 and the sliding post 8, keeping it in contact with the cylinder shaft 4.

[0025] Please see Figure 3 , Figure 5A lubrication mechanism 9 is provided on the inner side of the hollow shell 7. This mechanism lubricates the relative sliding points between the sliding column 8 and the hollow shell 7. The lubrication mechanism 9 includes an oil box 91 fixedly connected to the inner wall of the hollow shell 7. A sliding pin 92 is slidably connected to the bottom of the oil box 91, and the sliding pin 92 abuts against the sliding column 8. A pad 93 is fixedly connected to the top of the sliding pin 92, and a sponge block 94 contacts the upper end of the pad 93. The sponge block 94 is slidably connected to the inner side of the oil box 91. A protrusion 99 is fixedly connected to the sliding column 8, and the position of the protrusion 99 corresponds to that of the sliding pin 92. A baffle 95 is fixedly connected to the pin body of the sliding pin 92, and the baffle 95 contacts the inner surface of the oil box 91. A guide rod 96 is fixedly connected to the bottom inner side of the oil box 91, passing through the baffle 95 and slidably connected to it. A stop block 97 is fixedly connected to the top of the guide rod 96. The baffle 95 and guide rod 96 guide the sliding of the sliding pin 92 under force. A second spring 98 is sleeved on the outer side of the guide rod 96; one end of the second spring 98 is fixedly connected to the baffle 95, and the other end is fixedly connected to the stop block 97. The spring 98 allows the elastic force to be applied to the sliding pin 92 through the baffle 95. A through hole is provided at the bottom of the oil box 91, and the sliding pin 92 is located within this through hole, with the diameter of the through hole larger than that of the sliding pin 92. An observation hole facilitates the discharge of lubricating oil from the oil box 91.

[0026] The specific implementation process of this utility model is as follows: When in use, the user sits on the seat cushion 17, which slides on the fixed seat 16 and drives the pressure column 18 to move down. The pressure column 18 then applies a lateral pushing force to the hollow block 11, which in turn drives the sliding column 8 to move laterally, causing the brake block 10 at the end of the sliding column 8 to separate from the cylinder shaft 4. In this way, the user can move by stepping on the foot pedal 5. Similarly, after the user leaves the seat cushion 17, under the action of the spring 19, the hollow block 11 drives the sliding column 8 and the brake block 10 to return to their original positions. The brake block 10 re-fits the cylinder shaft 4 to restrict it and prevent children from shaking the foot pedal 5 and getting injured. In addition, when the sliding column 8 slides relative to the hollow shell 7, the sliding pin 92 in the lubrication mechanism 9 will be subjected to the reaction force of the protrusion 99 on the sliding column 8, thereby retracting and releasing a small amount of lubricating oil, thus lubricating the sliding column 8 and the hollow shell 7. This can reduce the friction between the two and increase the service life.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A brake mechanism for an exercise bicycle comprising a base (1), characterized in that: The top of the base (1) is welded with a rotating drum (2), the top of the rotating drum (2) is welded with a frame (3), the inside of the rotating drum (2) is mounted with a drum shaft (4) through a bearing, both ends of the drum shaft (4) are mounted with foot pedals (5), the frame (3) is welded with a connecting frame (6), the tail end of the connecting frame (6) is welded with a hollow shell (7), the left side of the hollow shell (7) is slidably connected with a slide post (8), and the slide post (8) penetrates through the hollow shell (7) and is arranged through the rotating drum (2) and is slidably connected with the rotating drum (2), one end of the slide post (8) is fixedly connected with a brake block (10), and the brake block (10) is in contact with the drum shaft (4), the other end of the slide post (8) is fixedly connected with a hollow block (11), the top of the frame (3) is fixedly connected with a fixed seat (16), the outer side of the fixed seat (16) is slidably connected with a cushion (17), the bottom of the cushion (17) is fixedly connected with a pressing post (18), the pressing post (18) penetrates through the fixed seat (16) and the hollow shell (7) and is slidably connected with the fixed seat (16) and the hollow shell (7), the tail end of the pressing post (18) is slidably connected with the hollow block (11), the inner side of the hollow shell (7) is provided with a lubricating mechanism (9).

2. The brake mechanism for an exercise bicycle according to claim 1, wherein: The bottom of the hollow block (11) is fixedly connected with a guide block (12), the bottom of the guide block (12) is provided with a ball (15), and the ball (15) is in contact with the inner surface of the hollow shell (7), the inner wall of the hollow shell (7) is fixedly connected with a guide post (13), the guide post (13) penetrates through the guide block (12) and is slidably connected with the guide block (12), the tail end of the guide post (13) is fixedly connected with a limiting block (14), and the limiting block (14) is in contact with the guide block (12).

3. The brake mechanism for the exercise bicycle according to claim 1, wherein: The inner side of the hollow shell (7) is provided with a spring (19), one end of the spring (19) is fixedly connected with the hollow block (11), and the other end of the spring (19) is fixedly connected to the inner surface of the hollow shell (7).

4. The brake mechanism for an exercise bicycle according to claim 1, wherein: The lubricating mechanism (9) comprises an oil box (91) fixedly connected to the inner wall of the hollow shell (7), the bottom of the oil box (91) is slidably connected with a slide pin (92), the slide pin (92) is in contact with the slide post (8), the top of the slide pin (92) is fixedly connected with a backing plate (93), the upper end of the backing plate (93) is in contact with a sponge block (94), the sponge block (94) is slidably connected to the inner side of the oil box (91), the slide post (8) is fixedly connected with a protruding block (99), and the position of the protruding block (99) corresponds to the slide pin (92).

5. A brake mechanism for an exercise bicycle as defined in claim 4, wherein: The pin body of the slide pin (92) is fixedly connected with a baffle (95), the baffle (95) is in contact with the inner surface of the oil box (91), the inner side of the oil box (91) is fixedly connected with a guide rod (96), the guide rod (96) penetrates through the baffle (95) and is slidably connected with the baffle (95), and the top of the guide rod (96) is fixedly connected with a stop block (97).

6. A brake mechanism for an exercise bicycle as defined in claim 5, wherein: The outer side of the rod body of the guide rod (96) is sleeved with a spring two (98), one end of the spring two (98) is fixedly connected with the baffle (95), and the other end of the spring two (98) is fixedly connected with the stop block (97).

7. The brake mechanism for the exercise bicycle according to claim 4, wherein: The bottom of the oil box (91) is provided with a through hole, the sliding pin (92) is located in the through hole, and the diameter of the through hole is greater than that of the sliding pin (92).

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