CN219329646U

CN219329646U - Rotor of electromagnetic brake

Info

Publication number: CN219329646U
Application number: CN202320875597.9U
Authority: CN
Inventors: 阳波; 杨贤
Original assignee: Chengdu Chaodechuang Technology Co ltd
Current assignee: Chengdu Chaodechuang Technology Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-07-11
Anticipated expiration: 2033-04-18

Abstract

The utility model relates to the technical field of brakes and provides a rotor of an electromagnetic brake, which comprises a rotor body, wherein the rotor body comprises a reinforcing ring and a friction plate, and the friction plate is coated outside the reinforcing ring; grooves are formed in two sides of the middle of the friction plate. When the rotor body is deformed at high temperature, the end face of the rotor body is provided with a larger friction contact surface, so that the normal braking effect of the motor is ensured.

Description

Rotor of electromagnetic brake

Technical Field

The utility model relates to the technical field of brakes, in particular to a rotor of an electromagnetic brake.

Background

In order to timely brake and stop the motor after the motor is powered off, the motor is usually provided with a braking function, and an electromagnetic brake is connected to the tail end of the motor for use.

The conventional brake rotor generates high temperature after being rubbed with the armature for a long time, the rotor is easy to deform, so that the rotor is bent and arched to a certain extent, the friction plate of the smaller part of the middle part of the rotor can be contacted with the armature, the friction contact surface is reduced, and the braking effect is reduced.

Disclosure of Invention

The utility model aims to provide a rotor of an electromagnetic brake, which has a relatively large friction contact surface when the rotor deforms at high temperature, so that the normal braking effect is ensured.

The embodiment of the utility model is realized by the following technical scheme: the rotor of the electromagnetic brake comprises a rotor body, wherein the rotor body comprises a reinforcing ring and friction plates, and the friction plates are coated on the outer part of the reinforcing ring; grooves are formed in two sides of the middle of the friction plate.

Preferably, the groove is annular.

Preferably, the depth of the groove is 0.05mm-0.1mm.

Preferably, the diameter of the groove is greater than the radius of the rotor body.

Preferably, the middle part of the rotor body is provided with a shaft hole, and the shaft hole is square.

Preferably, the friction plate is made of epoxy resin.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects: compared with the prior art, the utility model has the advantages that the groove is formed in the middle of the rotor body, namely, when the rotor body is deformed, the gap between the armature and the rotor body is smaller, the contact surface of the armature and the friction plate of the rotor body is larger than that of the traditional planar rotor, and the normal braking effect of the motor is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the front structure of a rotor of an electromagnetic brake provided by an embodiment of the present utility model;

FIG. 2 is a schematic view of the cross-sectional structure in the direction A-A in FIG. 1;

FIG. 3 is a schematic view of a deformed rotor body according to the present utility model;

FIG. 4 is a schematic view of the size of the contact surface between the armature and the deformed rotor body;

fig. 5 is a schematic view showing the size of the contact surface between the rotor body and the armature after deformation.

Icon: 1-rotor body, 11-friction plate, 111-recess, 12-reinforcing ring, 13-shaft hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Examples

The following further describes, with reference to fig. 1-5, a rotor of an electromagnetic brake, including a rotor body 1, the rotor body 1 including a reinforcing ring 12 and a friction plate 11, the friction plate 11 being coated on the outside of the reinforcing ring 12; grooves 111 are formed in two sides of the middle of the friction plate 11; specifically, the strength of the rotor body 1 is improved by arranging the reinforcing ring 12 in the rotor body 1, the reinforcing ring 12 can use a steel plate, and in addition, the middle part of the friction plate 11 is provided with the groove 111, so that when the rotor body 1 brakes a servo motor for a long time, the rotor body 1 is in a high-temperature state for a long time, the rotor body 1 is easy to arch and deform, when an armature moves towards the rotor body 1 to be tightly attached, the friction plate 11 on the rotor body 1 can have a larger friction contact surface with the armature, and compared with the traditional planar friction plate, the rotor body has a larger braking contact surface and a better braking effect, and the normal use of the servo motor is ensured.

It should be noted that, as shown in fig. 4, the length of the contact surface between the conventional rotor body 1 and the armature is B, and the length of the contact surface between the rotor body 1 and the armature of the present utility model is C.

As shown in fig. 1, the groove 111 is annular; specifically, since the rotor body 1 is circular, the rotor body 1 arches toward the center when deformed, and the annular groove 111 is adapted to the deformed arch.

As shown in fig. 2, the rotor body 1 is applied to a micro servo motor, and thus, the depth of the groove 111 is small, and the depth of the groove 111 is set to 0.05mm-0.1mm.

In order to reduce the distance between the armature and the end face of the rotor body 1 during braking, the diameter of the groove 111 is set to be larger than the radius of the rotor body 1.

As shown in fig. 1, a shaft hole 13 is formed in the middle of the rotor body 1, and the shaft hole 13 is square; specifically, the front end of the output shaft of the servo motor is square and is matched with the shaft hole 13.

In addition, it should be noted that the friction plate 11 on the rotor body 1 is made of epoxy resin; specifically, the epoxy resin has good heat resistance, good insulativity, rust prevention and good wear resistance.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. Rotor of electromagnetic brake, including rotor body (1), its characterized in that: the rotor body (1) comprises a reinforcing ring (12) and a friction plate (11), wherein the friction plate (11) is coated on the outer part of the reinforcing ring (12);

grooves (111) are formed in two sides of the middle of the friction plate (11).

2. The rotor of an electromagnetic brake as recited in claim 1, wherein: the groove (111) is annular.

3. The rotor of an electromagnetic brake as recited in claim 2, wherein: the depth of the groove (111) is 0.05mm-0.1mm.

4. A rotor for an electromagnetic brake as defined in claim 3, wherein: the diameter of the groove (111) is larger than the radius of the rotor body (1).

5. The rotor of an electromagnetic brake as recited in claim 1, wherein: the middle part of the rotor body (1) is provided with a shaft hole (13), and the shaft hole (13) is square.

6. The rotor of an electromagnetic brake as recited in claim 1, wherein: the friction plate (11) is made of epoxy resin.