Hub type reinforced brake

Abstract

The utility model provides a hub type reinforced brake which is characterized in that a conical anti-resonance groove and a reinforcing rib groove are formed in a reinforcing plate, the conical anti-resonance groove can effectively avoid the water accumulation problem, meanwhile, the anti-resonance effect is enhanced, and the problems of resonance and abnormal sound during braking are solved. In addition, the strength of the reinforcing plate is improved through the design of the reinforcing rib grooves, the material thickness can be reduced to 1.2 cm, the weight is reduced, and the cost is reduced. The brake further comprises an installation structure of the positioning shaft and the cam shaft, and the connection strength is enhanced through cooperation of the first riveting edge, the second riveting edge and the limiting flange circular ring. A third limiting flange circular ring is arranged on the cam shaft, so that deviation or falling is prevented. A U-shaped clamping body is arranged on the outer surface of the brake cover, external parts are convenient to install and connect, and meanwhile the structural strength is enhanced.

Description

Technical Field

[0001] The utility model particularly relates to a hub-type reinforced brake. Background Art

[0002] The main function of hub brakes is to provide braking force for various types of vehicles, including cars, trucks, motorcycles, electric bicycles, etc. They are usually installed on the wheels and generate friction by contacting the rotating brake drum of the wheel, thereby achieving deceleration or stopping.

[0003] For example, the Chinese utility model patent document with publication number "CN221824331U" discloses an iron hub reinforced brake, which includes an iron hub cover shell and a reinforcement plate arranged on the inner surface of the iron hub cover shell. Two sets of symmetrically distributed brake shoes are also installed on the inner side of the iron hub cover shell. The same end of the two sets of brake shoes are hinged to the iron hub cover shell through a positioning shaft, and the other end is linked to a camshaft. The camshaft rotates under the drive of the rear brake arm to control the two sets of brake shoes to move closer or farther away from each other for braking.

[0004] The brake has the following technical defects:

[0005] The reinforcement plate has a central through-hole in the center, a ring of central shaft reinforcement ribs around the edge, multiple secondary reinforcement ribs on the inner wall, and several anti-resonance through-holes. These anti-resonance through-holes penetrate the reinforcement plate, causing water to accumulate between the reinforcement plate and the iron hubcap shell. Because the reinforcement plate's outer periphery is welded to the iron hubcap shell, the accumulated water cannot be drained away, causing corrosion from the inside out of the brake, directly affecting braking performance. Utility Model Content

[0006] The technical problem to be solved by the present invention is to provide a hub-type reinforced brake to address the deficiencies of the above-mentioned prior art, thereby effectively avoiding the problem of water accumulation and solving the problem of resonance and abnormal noise during braking.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] The hub-type reinforced brake comprises a brake cover and a reinforcement plate installed on the inner surface of the brake cover, the brake cover is provided with a positioning shaft distributed on one side of the reinforcement plate and a cam shaft distributed on the other side of the reinforcement plate, two groups of symmetrically distributed brake shoes are provided between the positioning shaft and the cam shaft, and a tension spring is provided between the two groups of brake shoes, one end of the brake shoe is rotatably connected to the positioning shaft, and the other end is in contact with the outer surface of the cam shaft, the middle part of the brake cover is provided with an internal hollow mounting hole shaft, and the middle part of the reinforcement plate is provided with a middle sleeve through hole sleeved on the outer periphery of the mounting hole shaft, which is characterized in that: the reinforcement plate is provided with a conical anti-resonance groove distributed on the outer periphery of the middle sleeve through hole, the small end of the conical anti-resonance groove is located on the side away from the brake cover, and the large end contacts the inner surface of the brake cover, the reinforcement plate is provided with reinforcement rib grooves symmetrically distributed on both sides of the conical anti-resonance groove, the bottom surface of the reinforcement rib groove faces the side away from the brake cover, and the opening faces the brake cover.

[0009] The use of a conical anti-resonance groove, replacing the existing through-hole design, effectively prevents water accumulation. The large end of the conical anti-resonance groove contacts the inner surface of the brake cover, while the small end is welded to the mounting hole axis, creating a closed structure that prevents external moisture from penetrating the area between the reinforcement plate and the brake cover. Even if water droplets adhere to the inner surface of the brake cover, they are guided by the conical groove toward the edge of the brake cover, preventing water accumulation. Furthermore, the conical anti-resonance groove's unique shape enhances the anti-resonance effect. Specifically, when the brake vibrates during operation, the vibration waves propagate through the reinforcement plate. Due to the presence of the conical anti-resonance groove, the vibration waves are reflected and scattered when they reach the groove opening, dissipating and absorbing some of the vibration energy. Furthermore, the unique shape of the conical groove guides the vibration waves along the groove wall, further reducing impact and resonance on the entire brake, solving the problem of resonant noise during braking, and improving the stability and service life of the brake. The design of the reinforcing rib groove increases the strength of the reinforcement plate. At the same time, due to the addition of reinforcing ribs and the improvement of the anti-resonance groove structure, the existing reinforcement plate with a thickness of 1.8 cm can be replaced with the current 1.2 cm. The strength is far greater than the original 1.8 cm reinforcement plate, which reduces weight and costs at the same time.

[0010] The above-mentioned hub-type reinforced brake can be further configured as follows: a positioning shaft mounting hole is provided on the brake cover, a first cylindrical portion adapted for the positioning shaft mounting hole is provided at the lower end of the positioning shaft, a first rivet edge is connected to the bottom of the first cylindrical portion, the first rivet edge is bent toward the side away from the center line of the positioning shaft and the outer diameter of the first rivet edge is larger than the inner diameter of the positioning shaft mounting hole, a first limiting flange ring is provided above the first cylindrical portion, which is pressed on the inner surface of the brake cover, the outer diameter of the first limiting flange ring is larger than the inner diameter of the positioning shaft mounting hole, and a positioning shaft reinforcement groove is provided on one side of the reinforcement plate, which is clamped on the outside of the first limiting flange ring.

[0011] The first riveted edge cooperates with the first limiting flange to strengthen the connection between the locating shaft and the brake cover, effectively preventing the locating shaft from loosening or falling off during use. The locating shaft reinforcement groove on the reinforcement plate not only increases the connection area between the reinforcement plate and the locating shaft, improving the stability of the overall structure, but also provides guidance, making it easier to achieve precise alignment with the locating shaft during installation, thereby ensuring the overall performance of the brake.

[0012] The above-mentioned hub-type reinforced brake can be further configured as follows: a camshaft positioning hole is provided on the brake cover, a camshaft mounting seat is provided at the camshaft positioning hole, a camshaft mounting hole is provided in the camshaft mounting seat, and a camshaft mounting hole adapted to the lower end of the camshaft is provided inside the camshaft mounting seat, and a second rivet edge distributed on the outer surface of the brake cover is provided below the camshaft mounting seat, the second rivet edge is bent toward the side away from the center line of the camshaft and the outer diameter of the second rivet edge is larger than the inner diameter of the camshaft positioning hole, a second limiting flange ring is provided above the camshaft mounting seat, which is pressed on the inner surface of the brake cover, the outer diameter of the second limiting flange ring is larger than the inner diameter of the camshaft positioning hole, and a camshaft reinforcement groove is provided on the other side of the reinforcement plate, which is clamped on the outer periphery of the second limiting flange ring.

[0013] The camshaft mounting base provides a secure mounting foundation for the camshaft and facilitates camshaft replacement. The second rivet edge, in conjunction with the second retaining flange, strengthens the connection between the camshaft mounting base and the brake cover, effectively preventing the camshaft mounting base from loosening or falling off. The camshaft reinforcement grooves on the reinforcement plate not only increase the connection area between the reinforcement plate and the camshaft mounting base, improving overall structural stability, but also provide guidance, facilitating precise alignment of the reinforcement plate with the camshaft mounting base during installation, thereby ensuring the overall performance and service life of the brake.

[0014] The above-mentioned hub-type reinforced brake can be further configured as follows: the outer periphery of the camshaft is provided with a third limiting flange ring distributed above the camshaft mounting seat, the outer periphery of the third limiting flange ring is larger than the inner diameter of the camshaft mounting hole, and the lower end of the camshaft is linked to a brake arm.

[0015] The provision of a third limiting flange ring can effectively prevent the camshaft from shifting or falling off due to excessive pressure or vibration during use.

[0016] The above-mentioned hub-type reinforced brake can be further configured as follows: a U-shaped clip body is provided on the outer surface of the brake cover, the U-shaped clip body is distributed on one side of the mounting hole axis and the U-shaped clip body is arranged along the radial direction of the brake cover, and the U-shaped clip body is provided with an opening at the end away from the mounting hole axis.

[0017] The U-shaped connector facilitates the installation of the brake and the connection to external components. It also enhances the structural strength of the brake cover and prevents deformation of the outer surface of the brake cover.

[0018] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structure of the embodiment of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 The overall structure of the embodiment of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 3 This is an exploded diagram of an embodiment of the present utility model;

[0022] Figure 4 A cross-sectional view of an embodiment of the present invention Figure 1 ;

[0023] Figure 5 A cross-sectional view of an embodiment of the present invention Figure 2 .

[0024] Label annotation: brake cover 1, mounting hole shaft 1a, positioning shaft mounting hole 1b, camshaft positioning hole 1c, U-shaped clamping body 1d; reinforcement plate 2, middle sleeve through hole 2a, conical anti-resonance groove 2b, reinforcement rib groove 2c, positioning shaft reinforcement groove 2d, camshaft reinforcement groove 2e; positioning shaft 3, first cylindrical part 3a, first rivet edge 3b, first limiting flange ring 3c; camshaft 4, third limiting flange ring 4a; brake shoe 5, tension spring 6; camshaft mounting seat 7, camshaft mounting hole 7a, second rivet edge 7b, second limiting flange ring 7c; brake arm 8. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figures 1 to 5The hub-type reinforced brake shown in the figure comprises a brake cover 1 and a reinforcement plate 2 mounted on the inner surface of the brake cover 1. The brake cover 1 is provided with a positioning shaft 3 distributed on one side of the reinforcement plate 2 and a cam shaft 4 distributed on the other side of the reinforcement plate 2. Two sets of symmetrically distributed brake shoes 5 are provided between the positioning shaft 3 and the cam shaft 4. A tension spring 6 is provided between the two sets of brake shoes 5. One end of the brake shoe 5 is rotatably connected to the positioning shaft 3 and the other end abuts against the outer surface of the cam shaft 4. The middle part of the brake cover 1 is provided with an internal hollow The reinforcing plate 2 has a central through-hole 2a that fits around the outer periphery of the mounting hole 1a. Conical anti-resonance grooves 2b are distributed around the outer periphery of the through-hole 2a. The smaller ends of these grooves are located away from the brake cover 1, while the larger ends contact the inner surface of the brake cover 1. The reinforcing plate 2 also has symmetrically spaced reinforcing rib grooves 2c on either side of these grooves. The bottoms of these grooves face away from the brake cover 1, and their openings face the brake cover 1. Replacing the original through-hole design with these grooves effectively prevents water accumulation. The larger ends of these grooves contact the inner surface of the brake cover 1, while the smaller ends are welded to the mounting hole 1a, creating a closed structure that prevents external moisture from penetrating the area between the reinforcing plate 2 and the brake cover 1. Even if water droplets adhere to the inner surface of the brake cover 1, the conical grooves guide them toward the edge of the brake cover 1, preventing water accumulation. Furthermore, the conical anti-resonance groove 2b also enhances the anti-resonance effect through its special shape. Specifically, when the brake vibrates during operation, the vibration wave will propagate in the reinforcing plate 2. Due to the presence of the conical anti-resonance groove 2b, the vibration wave will be reflected and scattered when it propagates to the groove mouth, so that part of the vibration energy is dispersed and absorbed. At the same time, the special shape of the conical groove can also guide the vibration wave to propagate along the groove wall, further reducing the impact and resonance on the brake as a whole, solving the problem of resonance and abnormal noise during braking, and improving the stability and service life of the brake. The reinforcing rib groove 2c is designed to improve the strength of the reinforcing plate 2. At the same time, due to the addition of reinforcing ribs and the improvement of the anti-resonance groove structure, the existing reinforcing plate 2 with a thickness of 1.8 cm can be replaced with the current 1.2 cm, and the strength is far greater than the original 1.8 cm reinforcing plate 2, which reduces weight while reducing costs.

[0027] The brake cover 1 is provided with a positioning shaft mounting hole 1b. The lower end of the positioning shaft 3 is provided with a first cylindrical portion 3a that fits into the positioning shaft mounting hole 1b. A first rivet edge 3b is connected below the first cylindrical portion 3a. The first rivet edge 3b is curved away from the centerline of the positioning shaft 3 and has an outer diameter larger than the inner diameter of the positioning shaft mounting hole 1b. Above the first cylindrical portion 3a, a first retaining flange 3c is provided, which presses against the inner surface of the brake cover 1. The outer diameter of the first retaining flange 3c is larger than the inner diameter of the positioning shaft mounting hole 1b. One side of the reinforcement plate 2 is provided with a positioning shaft reinforcement groove 2d that is secured to the outside of the first retaining flange 3c. The first rivet edge 3b cooperates with the first retaining flange to strengthen the connection between the positioning shaft 3 and the brake cover 1, effectively preventing the positioning shaft 3 from loosening or falling off during use. The positioning shaft reinforcement groove 2d on the reinforcement plate 2 not only increases the connection area between the reinforcement plate 2 and the positioning shaft 3, and improves the stability of the overall structure, but also, through its guiding role, makes it easier for the reinforcement plate 2 to achieve precise alignment with the positioning shaft 3 during installation, thereby ensuring the overall performance of the brake.

[0028] The brake cover 1 is provided with a camshaft positioning hole 1c, located within a camshaft mounting seat 7. Within the camshaft mounting seat 7 is a camshaft mounting hole 7a adapted for the lower end of the camshaft 4. Below the camshaft mounting seat 7 is a second rivet edge 7b, located on the outer surface of the brake cover 1. This second rivet edge 7b curves away from the centerline of the camshaft 4 and has an outer diameter greater than the inner diameter of the camshaft positioning hole 1c. Above the camshaft mounting seat 7 is a second retaining flange 7c, which presses against the inner surface of the brake cover 1. The outer diameter of this second retaining flange 7c is greater than the inner diameter of the camshaft positioning hole 1c. On the other side of the reinforcement plate 2 is a camshaft reinforcement groove 2e, which is secured to the outer circumference of this second retaining flange 7c. The camshaft mounting seat 7 provides a secure mounting base for the camshaft 4 and facilitates replacement. The second rivet edge 7b, in conjunction with the second retaining flange 7c, strengthens the connection between the camshaft mounting seat 7 and the brake cover 1, effectively preventing the camshaft mounting seat 7 from loosening or falling off. The camshaft reinforcement groove 2e on the reinforcement plate 2 not only increases the connection area between the reinforcement plate 2 and the camshaft mounting seat 7, improving the stability of the overall structure, but also, through its guiding role, makes it easier for the reinforcement plate 2 to achieve precise alignment with the camshaft mounting seat 7 during installation, thereby ensuring the overall performance and service life of the brake.

[0029] A third stopper flange ring 4a is provided on the outer periphery of the camshaft 4, located above the camshaft mounting seat 7. The outer circumference of the third stopper flange ring 4a is larger than the inner diameter of the camshaft mounting hole 7a. A brake arm 8 is connected to the lower end of the camshaft 4. The provision of the third stopper flange ring 4a effectively prevents the camshaft 4 from shifting or falling off due to excessive pressure or vibration during use.

[0030] The outer surface of the brake cover 1 is provided with a U-shaped clip 1d. This clip 1d is located on one side of the mounting hole axis 1a and is radially arranged along the brake cover 1. The end of the clip 1d facing away from the mounting hole axis 1a has an opening. The U-shaped clip 1d facilitates brake installation and connection to external components. It also enhances the structural strength of the brake cover 1, preventing deformation of its outer surface.

[0031] The specific working principle of this embodiment is as follows: the brake cover 1 is mounted on the vehicle body through the mounting hole axis 1a. During braking, the brake arm 8 drives the camshaft 4 to rotate, which pushes the brake shoes 5 on both sides. The two sets of brake shoes 5 rotate around the positioning axis 3, moving the two sets of brake shoes 5 closer to or farther from each other, achieving the braking effect.

Claims

1. A hub-type reinforced brake comprising a brake cover and a reinforcement plate mounted on the inner surface of the brake cover, the brake cover being provided with a positioning shaft distributed on one side of the reinforcement plate and a camshaft distributed on the other side of the reinforcement plate, two sets of symmetrically distributed brake shoes being provided between the positioning shaft and the camshaft, a tension spring being provided between the two sets of brake shoes, one end of the brake shoe being rotatably connected to the positioning shaft and the other end being in contact with the outer surface of the camshaft, a hollow mounting hole shaft being provided in the middle of the brake cover, and a middle sleeve through-hole being provided in the middle of the reinforcement plate and sleeved around the outer periphery of the mounting hole shaft, characterized in that: The reinforcing plate is provided with a conical anti-resonance groove distributed on the outer periphery of the middle sleeve through hole, the small end of the conical anti-resonance groove is located on the side away from the brake cover, and the large end is in contact with the inner surface of the brake cover, and the reinforcing plate is provided with reinforcing rib grooves symmetrically distributed on both sides of the conical anti-resonance groove, the bottom surface of the reinforcing rib groove faces the side away from the brake cover, and the opening faces the brake cover.

2. The hub-type reinforced brake according to claim 1, characterized in that: A positioning shaft mounting hole is provided on the brake cover, and a first cylindrical portion adapted for the positioning shaft mounting hole is provided at the lower end of the positioning shaft. A first rivet edge is connected to the bottom of the first cylindrical portion, and the first rivet edge is bent toward the side away from the center line of the positioning shaft and the outer diameter of the first rivet edge is larger than the inner diameter of the positioning shaft mounting hole. A first limiting flange ring is provided above the first cylindrical portion and is pressed on the inner surface of the brake cover. The outer diameter of the first limiting flange ring is larger than the inner diameter of the positioning shaft mounting hole, and a positioning shaft reinforcement groove is provided on one side of the reinforcement plate, which is clamped on the outside of the first limiting flange ring.

3. The hub-type reinforced brake according to claim 2, characterized in that: The brake cover is provided with a camshaft positioning hole, and a camshaft mounting seat is provided at the camshaft positioning hole. A camshaft mounting hole is provided in the camshaft mounting seat and is adapted to the lower end of the camshaft. A second rivet edge is provided below the camshaft mounting seat and is distributed on the outer surface of the brake cover. The second rivet edge is bent toward the side away from the center line of the camshaft and the outer diameter of the second rivet edge is larger than the inner diameter of the camshaft positioning hole. A second limiting flange ring is provided above the camshaft mounting seat and is pressed on the inner surface of the brake cover. The outer diameter of the second limiting flange ring is larger than the inner diameter of the camshaft positioning hole. The other side of the reinforcement plate is provided with a camshaft reinforcement groove clamped on the outer periphery of the second limiting flange ring.

4. The hub-type reinforced brake according to claim 3, characterized in that: The outer periphery of the camshaft is provided with a third limiting flange ring distributed above the camshaft mounting seat. The outer periphery of the third limiting flange ring is larger than the inner diameter of the camshaft mounting hole. The lower end of the camshaft is linked with a brake arm.

5. The hub-type reinforced brake according to claim 4, characterized in that: The outer surface of the brake cover is provided with a U-shaped clamping body, which is distributed on one side of the mounting hole axis and arranged radially along the brake cover. The U-shaped clamping body is provided with an opening at one end away from the mounting hole axis.

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