Electric scooter hub brake

Abstract

The invention discloses an electric scooter hub brake, which comprises a shoe block group, a rocker arm group and a hub cover group. The crank is arranged in a hidden honeycomb drop-shaped structure. A rotating shaft is arranged at one end of the crank, and a wire pressing plate assembly is arranged at the other end. The end of the crank body is an annular cylindrical support member, and the tail of the crank body is a semi-enclosed force-bearing yielding member. The crank is arranged from wide to narrow from the end of the body to the tail of the body. The wire pressing plate assembly is arranged at one end of the semi-enclosed force-bearing yielding member. The crank body is provided with at least three special-shaped grooves. The crank is fixed to the end face of the gate box body through the rotating shaft. A rotating hole is arranged on the rotating shaft. The rotating angle of the crank is not exposed to the outside of the aluminum body of the gate box within an allowable range, so that the crank is not easily damaged and plays an anti-collision role. During the stretching process, the wire pressing block is not easy to collide with the through shaft, the gap is small, the space is saved, the space is compact, the appearance is beautiful, the applicability is wider, the brake line is pulled more smoothly, the force is evenly distributed, the strength is high, the braking effect is better, and the brake resetting is flexible and free.

Description

Technical Field

[0001] The present invention relates to the technical field of a brake hub brake, and in particular to a hub brake for an electric scooter. Background Art

[0002] At present, most hub brakes on the market use Figure 1 In the structure shown, the bell crank is exposed and the bell crank rocker arm extends to the outside of the hub cover. Although it has a braking effect, this external bell crank is easily damaged during braking and is prone to side collisions. Especially when the wheel is tilted for braking, the bell crank hits the road cliff, making braking not smooth. In addition, the original rocker arm is easily worn and has an unsightly appearance. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a pull-up hidden anti-collision and wear-resistant electric scooter hub brake.

[0004] In order to solve the above technical problems, the present invention provides an electric scooter hub brake, which includes a shoe group, a rocker group and a hub cover group, the rocker group is arranged on the hub cover group, the hub cover group is composed of a gate box body and a through shaft, the rocker group is composed of a crank and a fixing mechanism, the crank is arranged to be a hidden honeycomb drop-shaped structure, a rotating shaft is provided at one end of the crank, and a wire pressing plate assembly is provided at the other end, the wire pressing plate assembly is fixed and limited by anti-theft bolts and brake lines, the end of the crank body is an annular cylindrical support, the tail of the crank body is a semi-enclosed force-bearing yielding member, the crank is arranged from wide to narrow from the end of the body to the tail of the body, the wire pressing plate assembly is arranged at one end of the semi-enclosed force-bearing yielding member, the crank body is provided with at least three special-shaped grooves, the crank is fixed to the end face of the gate box body through a rotating shaft, a rotating hole is provided on the rotating shaft, and the rotating hole and the rotating shaft interval are fixedly connected by an embossed nut.

[0005] Preferably, an arc-shaped transition section is provided on the side of the semi-enclosed force-bearing and displacing member, and the distance between the arc-shaped transition section and the through-axis is 5mm-8mm.

[0006] Preferably, the range of the yielding arc of the arc-shaped transition section is a long radius of 8 mm and a short radius of 5 mm.

[0007] Preferably, the crank is made of aluminum material through an anodic black and / or electrophoretic black surface treatment process.

[0008] Preferably, the wire pressing plate assembly consists of a wire pressing plate body and a wire pressing block. The wire pressing plate body is connected to the tail of the crank body. The brake wire is pressed by the wire pressing block, and the brake wire pulls the crank to perform upward reciprocating motion.

[0009] Preferably, the crank reciprocating pull-up working angle range is 20-30°.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] The electric scooter hub brake of the present invention comprises a shoe block group, a rocker arm group and a hub cover group. The crank is arranged as a hidden honeycomb drop-shaped structure. A rotating shaft is arranged at one end of the crank, and a wire pressing plate assembly is arranged at the other end. The wire pressing plate assembly is fixed with anti-theft bolts and a limit brake line. The end of the crank body is an annular cylindrical support member, and the tail of the crank body is a semi-enclosed force-bearing and yielding member. The crank is arranged from wide to narrow from the end of the body to the tail of the body.

[0012] The crank is set as a curved arc hidden structure, and the crank is set in the wall of the gate box as a whole, so that the crank is not easy to be damaged and plays a role in collision prevention; the width of the end of the crank body can withstand greater support tensile force, according to Figure 8 The tensile test shows that when the maximum force is 5544.9N, the maximum force deformation is 23.940-24.24mm, and the maximum force elongation reaches 21%-24%, which meets the tensile force standard.

[0013] In addition, the tail of the crank body is the tension force point, and the wire pressing plate is set at one end of the tail of the crank body, which makes the brake line pulling smoother, the force is evenly distributed, the strength is high, and the braking effect is better. After the brake durability test, a tension of 300N is applied to the brake line, and 15,000 cycles are implemented at a frequency of 1-2Hz. The test results show that the brake reset is flexible and free.

[0014] An arc-shaped transition section is provided on the side of the upper half-enclosed force-bearing yielding member of the crank. The distance between the arc-shaped transition section and the through shaft is 5mm-8mm. The yielding range of the arc-shaped transition section is 8mm in long radius and 5mm in short radius. During the stretching process, the pressing block and the through shaft are not easy to collide, the gap is small, the space is better saved, the space is compact, the appearance is more beautiful and compact, and the applicability is wider.

[0015] The crank body is provided with at least three special-shaped grooves, which saves materials and reduces weight.

[0016] The crank is made of aluminum material through anodizing black and / or electrophoretic black surface treatment process. When the crank brake of the present application is used, the wear of the brake shoe remains unchanged. Specifically, the wear test data in Table 2 shows:

[0017]

[0018] Table 2 BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the product structure of the prior art.

[0020] Figure 2 It is the exploded structure diagram of the hub brake of the present invention.

[0021] Figure 3 It is a schematic structural diagram of the hub brake of the electric scooter of the present invention.

[0022] Figure 4 It is a front view schematic diagram of the hub brake of the electric scooter of the present invention.

[0023] Figure 5 It is a cross-sectional view of the hub brake of the electric scooter of the present invention taken along the AA direction.

[0024] Figure 6 It is a cross-sectional view of the hub brake of the electric scooter of the present invention taken along the BB direction.

[0025] Figure 7 This is a diagram showing the use status of the electric scooter hub brake of the present invention when it is applied to a product.

[0026] Figure 8 This is a tensile test curve of the hub brake of the electric scooter of the present invention.

[0027] In the figure: 11-shoe block assembly; 12-rocker arm assembly; 13-gate box assembly, 121-crank; 122-fixing mechanism; 123-rotating shaft; 124-wire pressing plate assembly; 125-anti-theft bolt; 126-annular cylindrical support; 127-semi-enclosed force-bearing and yielding member; 128-special-shaped groove; 129-rotating hole; 111-arc transition section; 130-embossed nut; 131-gate box body; 132-through shaft. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the combination or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, in the description of the embodiments of the present invention, the device positional relationships such as "upper", "lower", "front", "back", "left", "right" and the like in all the drawings are based on the positions or positional relationships shown in the drawings. Figure 2 As standard.

[0030] like Figure 3-7As shown, an electric scooter hub brake comprises a shoe block group 11, a rocker arm group 12 and a brake box group 13, wherein the rocker arm group 12 is arranged on the brake box group 13, and the brake box group 13 is composed of a brake box body 131 and a through shaft 132, and the rocker arm group 12 is composed of a crank 121 and a fixing mechanism 122, wherein the crank 121 is arranged as a hidden curvature honeycomb drop-shaped structure, a rotating shaft 123 is provided at one end of the crank 121, and a wire pressing plate assembly 124 is provided at the other end, wherein the wire pressing plate assembly 124 uses an anti-theft bolt 125 to fix and limit the brake line, and the wire pressing plate assembly 124 is composed of a wire pressing plate body and a wire pressing block, wherein the wire pressing plate body is connected to the tail of the crank 121 body, and the brake line is pressed by the wire pressing block, and the brake line pulls the crank 121 to perform upward reciprocating motion.

[0031] The end of the crank 121 body is an annular cylindrical support 126, and the tail of the crank 121 body is a semi-enclosed force-bearing yielding member 127. The side of the semi-enclosed force-bearing yielding member 127 is provided with an arc-shaped transition section 111. The distance between the arc-shaped transition section 111 and the through shaft 132 is 5mm-8mm, and the yielding range of the arc-shaped transition section 131 is a long radius of 8mm. , short radius 5mm; the reciprocating upward pulling working angle range of the crank 121 is 20-30°, the crank 121 is arranged from wide to narrow from the end of the main body to the tail of the main body, the wire pressing plate assembly 124 is arranged at one end of the semi-enclosed force-bearing displacement member 127, the main body of the crank 121 is provided with at least three special-shaped grooves 128, the crank 121 is fixed to the end face of the gate box body 131 through a rotating shaft 123, and a rotating hole 129 is provided on the rotating shaft 123, and the rotating hole 129 and the rotating shaft 123 are fixedly connected by an embossed nut 130.

[0032] The crank 121 is made of aluminum material through an anodic black and / or electrophoretic black surface treatment process.

[0033] The specific working process is:

[0034] like Figure 2As shown, the left shoe block and the right shoe block are fixed inside the aluminum body of the gate box by means of a variable diameter tension spring, and at the same time, the rotating shaft 123 is passed through the rotating hole 129 of the aluminum body of the gate box, and then the annular cylindrical support 126 on the end of the crank 121 body is passed through the rod body of the rotating shaft 123, and the flange surface embossed nut 130 is used to install and fix it, the rotating shaft 123 and the crank 121 are fixedly installed on the aluminum body of the gate box, the support shaft is installed on the aluminum body of the gate box, the middle shaft sleeve and the sliding sleeve are installed in the through shaft, the brake line passes through the wire pressing plate body, and the wire pressing block is fixedly installed in the through shaft by means of a hexagonal anti-theft bolt. On the main body of the wire pressing plate, when the vehicle is in a braking state, the brake wire pulls the crank 121, and the crank 121 drives the rotating shaft 123 to move the shoe to play a braking role. The rotation angle of the crank 121 is within the allowable range and is not exposed to the outside of the aluminum body of the gate box, so that the crank is not easily damaged and plays an anti-collision role; during the stretching process, the wire pressing block and the through shaft are not easy to collide, the gap is small, the space is better saved, the space is compact, the appearance is more beautiful and compact, and the applicability is wider, so that the brake wire is pulled more smoothly, the force is evenly distributed, the strength is high, the braking effect is better, and the brake resetting is flexible and free.

[0035] The above shows and describes the main features and basic principles of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. An electric scooter hub brake, comprising a shoe assembly (11), a rocker arm assembly (12) and a brake box assembly (13), characterized in that: The rocker arm assembly (12) is arranged on the gate box assembly (13). The gate box assembly (13) is composed of a gate box body (131) and a through shaft (132). The rocker arm assembly (12) is composed of a crank (121) and a fixing mechanism (122). The crank (121) is arranged as a hidden curved honeycomb drop-shaped structure. One end of the crank (121) is provided with a rotating shaft (123), and the other end is provided with a wire pressing plate assembly (124). The wire pressing plate assembly (124) uses an anti-theft bolt (125) to fix and limit the brake wire. The end of the main body of the crank (121) is an annular cylindrical support member (126). The tail of the crank (121) body is a semi-enclosed force-bearing yielding member (127), the crank (121) is arranged from wide to narrow from the end of the body to the tail of the body, the wire pressing plate assembly (124) is arranged at one end of the semi-enclosed force-bearing yielding member (127), the crank (121) body is provided with at least three special-shaped grooves (128), the crank (121) is fixed to the end surface of the gate box body (131) through a rotating shaft (123), the rotating shaft (123) is provided with a rotating hole (129), and the rotating hole (129) and the rotating shaft (123) are fixedly connected by an embossed nut (130); The side of the semi-enclosed force-bearing and displacing member (127) is provided with an arc-shaped transition section (111), and the distance between the arc-shaped transition section (111) and the through shaft (132) is 5 mm-8 mm; The range of the arc of the arc-shaped transition section (111) is a long radius of 8 mm and a short radius of 5 mm; The wire pressing plate assembly (124) is composed of a wire pressing plate body and a wire pressing block. The wire pressing plate body is connected to the rear of the crank (121) body. The brake wire is pressed by the wire pressing block, and the brake wire pulls the crank (121) to perform upward reciprocating motion.

2. The electric scooter hub brake according to claim 1, characterized in that: The crank (121) is made of aluminum material through an anodic black and / or electrophoretic black surface treatment process.

3. The electric scooter hub brake according to claim 1, characterized in that: The reciprocating upward pulling working angle range of the crank (121) is 20-30°.

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