CN217873907U - Brake and motor - Google Patents

Abstract

The utility model discloses a brake and a motor, wherein the brake comprises an iron core, an armature, a friction plate and a limiting plate which are arranged in sequence along the axial direction of the brake; the friction plate is arranged on the limiting plate, and the armature is connected with the iron core through an elastic piece; a magnetic part is further arranged on the limiting plate opposite to the armature; when the iron core loses power, the elastic piece rebounds to drive the armature to move towards the friction plate and abut against the friction plate, and the magnetic piece and the armature are magnetically attracted to drive the armature to move towards the friction plate and abut against the friction plate. The utility model discloses can improve the translation rate of armature under the condition of losing the electricity, improve braking efficiency.

Description

Brake and motor

Technical Field

The utility model relates to a stopper technical field especially relates to a stopper and motor.

Background

The electromagnetic brake is mainly used for the precise control and braking of the motor, and the working principle of the electromagnetic brake commonly used at present mainly comprises the following steps: under the power-off state, an armature of the electromagnetic brake is abutted against the friction plate under the action of the elastic force of the spring and is clamped with the limiting plate to provide braking force for the brake, and a certain gap exists between the armature and the iron core; under the power-on state, the armature is abutted against the iron core under the magnetic action of the iron core and extrudes the spring, so that a certain gap exists between the armature and the friction plate, and the friction plate is released.

In the power-off process, the braking efficiency depends on the elastic force of the spring, so that the braking efficiency is low, and meanwhile, along with the increase of the service life of the electromagnetic brake, main parts such as the armature and the friction plate are abraded to a certain degree, so that the gap between the armature and the friction plate is increased, and the braking efficiency is further reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a brake and motor can be under the condition of losing the electricity, and the braking efficiency has been improved in the quick braking.

In a first aspect, the present invention provides a brake, which includes an iron core, an armature, a friction plate, and a limiting plate, which are sequentially disposed along an axial direction of the brake; the friction plate is arranged on the limiting plate, and the armature is connected with the iron core through an elastic piece; a magnetic part is arranged on the limiting plate opposite to the armature; when the iron core is powered off, the elastic piece rebounds to drive the armature to move towards the friction plate and abut against the friction plate, and the magnetic piece and the armature are magnetically attracted to drive the armature to move towards the friction plate and abut against the friction plate.

Further, the magnetic part is arranged on one side, facing the armature, of the limiting plate.

Further, the friction plate is arranged on the magnetic piece.

Furthermore, a gasket is arranged between the friction plate and the magnetic part.

Further, the magnetic parts are arranged at two ends of the limiting plate.

Further, at least one winding is arranged in the iron core.

Further, the magnetic part is arranged on one side, facing away from the armature, of the limiting plate.

Furthermore, the magnetic part is pasted on the limiting plate through the viscous part.

Further, the magnetic member is a permanent magnet.

In a second aspect, the present invention further provides an electric motor, wherein the brake is applied to the electric motor.

The utility model provides a stopper and motor are equipped with the magnetic part on the limiting plate, and when the stopper was in the state of losing power, armature moved towards the friction disc under the spring action of spring and the magnetic force action of magnetic substance, until with the friction disc butt, shortened the time of armature with the friction disc butt, improved braking efficiency.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is an overall structural view of a brake according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

fig. 3 is an enlarged view of a portion B in fig. 2.

Reference numerals: 100. a brake; 10. an iron core; 20. an armature; 30. a friction plate; 40. a limiting plate; 50. an elastic member; 60. a magnetic member; 70. a gasket; 80. and (4) winding.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the drawings in the present application, and it should be understood that the described embodiments are some, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1 to 3, fig. 1 is a general structural diagram of a brake 100 according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of FIG. 1; fig. 3 is an enlarged view of a portion B in fig. 2. As shown in fig. 2 and 3, the present invention provides a brake 100 including an iron core 10, an armature 20, a friction plate 30, and a limit plate 40, which are sequentially arranged along an axial direction of the brake 100; the friction plate 30 is arranged on the limit plate 40, and the armature 20 is connected with the iron core 10 through an elastic piece 50; a magnetic part 60 is further arranged on the limiting plate 40 opposite to the armature 20; when the iron core 10 loses power, the elastic member 50 rebounds to drive the armature 20 to move toward the friction plate 30 and abut against the friction plate 30, and the magnetic member 60 and the armature 20 are magnetically attracted to drive the armature 20 to move toward the friction plate 30 and abut against the friction plate 30.

Specifically, the armature 20 is connected with the iron core 10 through the elastic member 50, the friction plate 30 and the magnetic member 60 are arranged on the limit plate 40, when the brake 100 is powered on, the iron core 10 generates magnetic force to attract the armature 20, so that the armature 20 moves towards the iron core 10 and presses the elastic member 50, when the brake 100 is powered off, the armature 20 moves towards the friction plate 30 under the elastic force of the elastic member 50 and the magnetic force of the magnetic member 60 until being abutted against the friction plate 30, and when the armature 20 is abutted against the friction plate 30, the armature 20 and the limit plate 40 are matched with each other to limit the movement of the friction plate 30, so that braking force is provided for the brake 100. During the power loss process, the armature 20 is provided with the elastic force provided by the elastic member 50 and the magnetic force provided by the magnetic member 60, so that the moving speed of the armature 20 towards the friction plate 30 is accelerated, and meanwhile, even when the armature 20 and the friction plate 30 are abraded, the armature 20 can still rapidly move towards the friction plate 30 due to the magnetic member 60, and the braking force can be stably provided. In addition, the elastic member 50 may be a spring, and the magnetic member 60 may be a hard magnet, such as a permanent magnet.

As a further example, the magnetic member 60 is disposed on a side of the stopper plate 40 facing the armature 20.

The magnetic element 60 is disposed on the position-limiting plate 40, and may be disposed on a side of the position-limiting plate 40 facing the armature 20, or may be disposed on a side of the position-limiting plate 40 facing away from the armature 20, and is mainly used for adsorbing the armature 20, when the magnetic element 60 is disposed on a side of the position-limiting plate 40 facing the armature 20, the magnetic element 60 is disposed on the position-limiting plate 40 opposite to the friction plate 30, and the friction plate 30 may be disposed on the magnetic element 60, because the friction plate 30 is generally disposed opposite to the armature 20, the adsorption force of the magnetic element 60 to the armature 20 may be improved, when the magnetic element 60 is disposed on a side of the position-limiting plate 40 facing away from the armature, the position of the magnetic element 60 may be flexibly adjusted according to the requirement of the adsorption force, and the specific disposition position of the magnetic element 60 is not limited herein.

As a further embodiment, the friction plate 30 is disposed on the magnetic member 60.

The friction plate 30 is generally arranged opposite to the armature 20, the position of the magnetic part 60 arranged on the limit plate 40 can be determined according to the friction plate 30, and then the friction plate 30 is arranged on the magnetic part 60, so that the magnetic part 60 and the armature 20 are arranged oppositely, and the armature 20 can be adsorbed more effectively.

As a further example, a spacer 70 is disposed between the friction plate 30 and the magnetic member 60.

The friction plate 30 may be disposed on the magnetic member 60 through a spacer 70, so as to slow down the wear rate of the friction plate 30 and the magnetic member 60, and prolong the service life of the friction plate 30. The friction plate 30 may be directly provided on the stopper plate 40, and the spacer 70 may be provided between the stopper plate 40 and the friction plate 30 to perform the same function.

As a further example, the magnetic members 60 are provided at both ends of the stopper plate 40.

Wherein, a plurality of magnetic members 60 may be provided, and the plurality of magnetic members 60 are distributed at both ends of the limiting plate 40 for providing sufficient adsorption force.

As a further embodiment, at least one winding 80 is provided in the core 10.

Wherein a plurality of windings 80, such as two windings 80, may be disposed within the core 10, the windings 80 generating a magnetic force to attract the armature 20 when the core 10 is energized.

As a further embodiment, the magnetic member 60 is adhered to the position-limiting plate 40 by an adhesive member.

The magnetic member 60 may be adhered to the limiting plate 40 through adhesive members such as glue, or may be disposed on the limiting plate 40 through a snap spring, a thermal sleeve, or the like.

The utility model also discloses a motor, its application have any one of the stopper 100 of the aforesaid.

The utility model discloses a be equipped with the magnetic substance on the limiting plate, when the stopper is in under the power-off state, armature can move and with the friction disc butt towards the friction disc fast under the spring action of spring and the magnetic force action of magnetic substance to provide braking force for the stopper, improved braking efficiency.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The brake is characterized by comprising an iron core, an armature, a friction plate and a limiting plate which are sequentially arranged along the axial direction of the brake;

the friction plate is arranged on the limiting plate, and the armature is connected with the iron core through an elastic piece;

a magnetic part is arranged on the limiting plate opposite to the armature;

when the iron core loses power, the elastic piece rebounds to drive the armature to move towards the friction plate and abut against the friction plate, and the magnetic piece and the armature are magnetically attracted to drive the armature to move towards the friction plate and abut against the friction plate.

2. The brake of claim 1, wherein the magnetic member is disposed on a side of the limiting plate facing the armature.

3. A brake according to claim 2, in which the friction plate is provided on the magnetic member.

4. A brake according to claim 3, further comprising a spacer between said friction plate and said magnetic member.

5. The brake of claim 3, wherein the magnetic members are disposed at both ends of the limiting plate.

6. A brake according to claim 1, characterised in that at least one winding is provided in the core.

7. The brake of claim 1, wherein the magnetic member is disposed on a side of the limiting plate facing away from the armature.

8. The brake of claim 1, wherein the magnetic member is adhered to the stopper plate by an adhesive member.

9. The brake of claim 1, wherein the magnetic member is a permanent magnet.

10. An electric machine, characterized in that a brake according to any of claims 1-9 is applied.

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