An electromagnetic braking device

Abstract

This utility model discloses an electromagnetic braking device, relating to the field of wheel technology. It includes a tire body with a hub inside, consisting of a left hub and a right hub. An electromagnetic braking assembly is installed inside the right hub, comprising an electromagnetic coil, a brake washer assembly, and brake pads. When the electromagnetic coil is energized, it generates a magnetic field that attracts the brake pads and brake washer assembly, achieving braking. During braking, current flows through the coil, generating a magnetic field that attracts the brake pads. The brake pads abut against a baffle, which in turn abuts against the brake washer assembly. Because the three outward-protruding washers rotate while the three inward-protruding washers do not, friction is generated between the three inward and outward protrusions when the brakes are applied, thus slowing the wheel and achieving braking. This patented electromagnetic braking system is highly efficient and does not immediately lock the wheel, improving operator safety.

Description

Technical Field

[0001] This utility model relates to the field of wheel technology, specifically to an electromagnetic braking device. Background Technology

[0002] Currently, the wheels of toy cars on the market, such as the axle brakes commonly used in passenger-carrying toy cars, rely on the friction between rubber and the axle for braking, which is very ineffective. Clamp brakes suffer significantly reduced braking performance in rainy or muddy conditions, and may even fail to brake when the tires are slippery. Furthermore, most toy car brakes are prone to wheel lock-up. For example, the plastic or rubber brake pads on twist cars create high friction during hard contact, and disc brakes are also prone to wheel lock-up during emergency braking, which can easily cause children to be injured due to inertia or the vehicle to skid. Additionally, drum brakes experience heat dissipation during continuous braking, reducing braking efficiency. Therefore, to address these technological shortcomings, we need to design a braking device that offers high braking efficiency and is less prone to wheel lock-up. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides an electromagnetic braking device that solves the problems of low braking efficiency and easy tire lock-up in existing technologies.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a tire body, and a hub is installed inside the tire body. The hub is composed of a left hub and a right hub. An electromagnetic brake assembly is installed inside the right hub. The electromagnetic brake assembly includes an electromagnetic coil, a brake washer assembly, and a brake pad. When the electromagnetic coil is energized, it generates a magnetic field that attracts the brake pad and the brake washer assembly to achieve braking.

[0005] Furthermore, the brake washer assembly consists of a plurality of washers.

[0006] Furthermore, the electromagnetic brake assembly also includes a fixed housing with a cavity inside for placing an electromagnetic coil, which is then fixed in place by the cavity.

[0007] Furthermore, a brake bracket is provided between the right wheel hub and the electromagnetic brake assembly. The inner edge of the brake bracket is provided with several inner grooves, and the washer is provided with a first protrusion protruding outward, which is adapted to and connected with the inner groove.

[0008] Furthermore, the outer surface of the fixing shell is provided with an outer groove, and the washer is provided with a second protrusion protruding inward, the second protrusion being adapted to and connected with the outer groove.

[0009] Furthermore, a through hole is provided in the middle of the fixed shell, and a connecting shaft is provided in the through hole. The connecting shaft extends through the through hole to the outside of the brake bracket, and the brake bracket is provided with a hole corresponding to the connecting shaft. Beneficial effects

[0010] This invention provides an electromagnetic braking device, which has the following advantages compared with the prior art: By setting an inner groove in the brake bracket and installing washers, the outer protrusions of the three washers are adapted to connect with the inner groove of the brake bracket. Therefore, when the right wheel hub rotates, the brake bracket will also rotate, and the outer protrusions of the washers will also rotate. Similarly, an outer groove is set in the fixing shell, and the inner protrusions of the three washers are adapted to connect with the outer groove of the fixing shell. Therefore, when braking, the current passing through the coil generates a magnetic field that attracts the brake pads. The brake pads abut against the baffle, and the baffle abuts against the brake washer assembly. Because the three outwardly protruding washers rotate while the three inwardly protruding washers do not, friction is generated between the three inwardly and outwardly protruding points when the brakes are applied, thus slowing down the wheel and achieving braking. This patented electromagnetic brake is highly efficient and does not immediately lock the wheel upon braking, improving operator safety. Attached Figure Description

[0011] Figure 1 This is an exploded view of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 This is a cross-sectional view of the electromagnetic brake assembly of this utility model; Figure 4 This is a schematic diagram of the electromagnetic brake assembly structure of this utility model; Figure 5 This is a front view of the electromagnetic brake assembly of this utility model; Figure 6 This is a schematic diagram of the structure of the fixing shell of this utility model; In the diagram: 1. Tire body; 2. Wheel hub; 3. Left wheel hub; 4. Right wheel hub; 5. Electromagnetic brake assembly; 51. Electromagnetic coil; 52. Brake washer assembly; 521. Washer; 5210. First protrusion; 5211. Second protrusion; 53. Brake pad; 6. Fixing shell; 61. Cavity; 62. Outer groove; 7. Baffle; 8. Brake bracket; 81. Inner groove; 9. Through hole; 10. Connecting shaft; Detailed Implementation

[0012] 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.

[0013] Please see Figure 1-5 This utility model provides a technical solution: an electromagnetic braking device, including a tire body 1, a wheel hub 2 is installed inside the tire body 1, the wheel hub 2 is composed of a left wheel hub 3 and a right wheel hub 4, an electromagnetic braking assembly 5 is installed inside the right wheel hub 4, the electromagnetic braking assembly 5 includes an electromagnetic coil 51, a brake washer assembly 52 and a brake pad 53, the electromagnetic coil 51 generates a magnetic field after being energized to attract the brake pad 53 and the brake washer assembly 52 to achieve braking. By setting an inner groove in the brake bracket and installing washers, with the outer protrusions of the three washers fitting and connecting to the inner groove, the brake bracket rotates when the right wheel hub rotates, causing the outer protrusions of the washers to rotate as well. Similarly, an outer groove is set in the fixing shell, with the inner protrusions of the three washers fitting and connecting to it. Therefore, when braking, the current flowing through the coil generates a magnetic field that attracts the brake pads. The brake pads abut against the baffle, and the baffle abuts against the brake washer assembly. Because the three outwardly protruding washers rotate while the three inwardly protruding washers do not, friction is generated between the three inner and three outer protrusions during compression, thus slowing down the wheel and achieving braking. This patented electromagnetic brake is highly efficient and does not immediately lock the wheel upon braking, improving operator safety.

[0014] Please read Figure 1 As shown, the brake washer assembly 52 consists of several washers 521. There are a total of six washers 521. This design allows for greater brake friction, reducing brake vibration and abnormal noise.

[0015] Please read Figure 3 As shown, the electromagnetic brake assembly 5 also includes a fixed housing 6, the interior of which is provided with a cavity 61. The cavity 61 is used to house the electromagnetic coil 51, which is fixed in place by the cavity 61. When current passes through the electromagnetic coil 51, a magnetic field is generated that attracts the brake pad 53. Therefore, the brake pad 53, the baffle 7, and the brake washer assembly 52 come into contact with each other, generating friction and thus achieving braking.

[0016] Please read Figure 5 As shown, the brake washer assembly 522 has washer 521 disposed on the outer ring of the fixing shell 6. A baffle 7 is provided on one side of the fixing shell 6, and the washer 521 is fixed by the baffle 7. Because of the baffle 7, when the brake pad 53 is attracted, it will abut against the baffle 7, and the baffle 7 will abut against the brake washer assembly 52. ​​Therefore, after the brake washer assemblies 52 are pressed together, the three outwardly protruding first protrusions 5210 of the washer 521 rotate, and thus friction is generated between the washer 521 of the three inwardly protruding second protrusions 5211 and the washer 521 of the washer 521.

[0017] Please read Figure 4As shown, a brake bracket 8 is provided between the right wheel hub 4 and the electromagnetic brake assembly 5. The inner edge of the brake bracket 8 has several inner grooves 81, and each washer 521 has a first protruding point 5210 that fits into the inner groove 81. Because the brake bracket 8 has inner grooves 81 and three of the washers 521 have outwardly protruding first protruding points 5210, the three washers with outwardly protruding points 5211 will also rotate as the brake bracket 8 rotates.

[0018] Please read Figure 6 As shown, the outer surface of the fixed housing 6 is provided with an outer groove 62, and the washer 521 is provided with an inwardly protruding second protrusion 5211, which is adapted to and connected to the outer groove 62. By providing an outer groove 62 on the fixed housing 6, and having three washers with inwardly protruding second protrusions 5211, but the fixed housing 6 does not rotate, so the three washers also do not rotate. However, the three outwardly protruding washers 521 and the three inwardly protruding washers 521 are placed in an alternating pattern, one inward and one outward, forming a group, for a total of three groups. This placement method allows for greater friction between the brake washer assemblies, resulting in higher braking efficiency.

[0019] Please read Figure 3 As shown, a through hole 9 is provided in the middle of the fixed housing 6, and a connecting shaft 10 is provided in the through hole 9. The connecting shaft 10 extends through the through hole 9 to the outside of the brake bracket 8, and the brake bracket 8 is provided with a corresponding hole for the connecting shaft 10. The connection between the fixed housing 6 and the brake bracket 8 is achieved by providing the connecting shaft 10.

[0020] Work process; The inner groove 81 of the brake bracket 8 is adapted to the outward protrusion 5210 of the washer 521. Since the brake bracket 8 is located inside the right wheel hub 4, the brake bracket 8 will rotate accordingly, and the washers 521 of the three outward protrusions 5210 will also rotate accordingly. The outer groove 62 of the fixing shell 6 is adapted to the washers 521 of the three inward protrusions 5210. The fixing shell 6 will not rotate, therefore the washers 521 of the three inward protrusions 5211 will not rotate either. When braking, the fixed housing 6 is connected to an external power source, so the current passes through the electromagnetic coil 51 inside the fixed housing 6 to generate a magnetic field that attracts the brake pad 53. The brake pad 53 abuts against the baffle 7, and the baffle 7 abuts against the washers 521 of the three outward first protrusions 5210 and the three inward second protrusions 5211. Therefore, friction is generated between the washers 521 of the three inward second protrusions 5211 and the washers 521 of the three outward first protrusions 5210, which slows down the speed of the wheel and achieves braking.

[0021] It should be noted that the brake washer assembly 52 is arranged in a group of three: one washer 521 with an outward first protrusion 5210 and one washer 5211 with an inward second protrusion 5211. The washer 521 with the outward first protrusion 5210 is rotatable. When compressed, it will generate friction with the non-rotating washer 521 with the inward second protrusion 5211. In addition, the coil of the electromagnetic brake needs to be connected to a wire. These are existing technologies, so the wires are not shown.

Claims

1. An electromagnetic braking device, comprising a tire body (1), wherein a hub (2) is installed inside the tire body (1), the hub (2) being composed of a left hub (3) and a right hub (4), characterized in that, The right wheel hub (4) is equipped with an electromagnetic brake assembly (5). The electromagnetic brake assembly (5) includes an electromagnetic coil (51), a brake washer assembly (52), and a brake pad (53). When the electromagnetic coil (51) is energized, it generates a magnetic field that attracts the brake pad (53) and the brake washer assembly (52) to achieve braking.

2. The electromagnetic braking device according to claim 1, characterized in that, The brake washer assembly (52) consists of a plurality of washers (521).

3. An electromagnetic braking device according to claim 2, characterized in that, The electromagnetic brake assembly (5) also includes a fixed shell (6), and the fixed shell (6) has a cavity (61) inside. The cavity (61) is used to place the electromagnetic coil (51), and the electromagnetic coil (51) is fixed through the cavity (61).

4. An electromagnetic braking device according to claim 3, characterized in that, The washer (521) of the brake washer assembly (52) is disposed on the outer ring of the fixed shell (6). A baffle (7) is provided on one side of the fixed shell (6), and the washer (521) is fixed by the baffle (7).

5. An electromagnetic braking device according to claim 2, characterized in that, A brake bracket (8) is provided between the right wheel hub (4) and the electromagnetic brake assembly (5). The inner edge of the brake bracket (8) is provided with several inner grooves (81). The washer (521) is provided with a first protrusion (5210) protruding outward. The first protrusion (5210) is adapted to and connected with the inner groove (81).

6. An electromagnetic braking device according to claim 3, characterized in that, The outer surface of the fixed shell (6) is provided with an outer groove (62), and the washer (521) is provided with an inwardly protruding second protrusion (5211), which is adapted to and connected with the outer groove (62).

7. An electromagnetic braking device according to claim 3, characterized in that, The fixed shell (6) has a through hole (9) in the middle, and a connecting shaft (10) is provided in the through hole (9). The connecting shaft (10) extends through the through hole (9) to the outside of the brake bracket (8), and the brake bracket (8) is provided with a hole corresponding to the connecting shaft (10).

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