CN-224232430-U - Stator and permanent magnet brake

Abstract

The utility model relates to the technical field of brakes and provides a stator and a permanent magnet brake, wherein the stator comprises a magnetic yoke, a coil, a magnetic conducting disc and a plurality of arc-shaped permanent magnets, the magnetic yoke is of an integrated structure, one end of the magnetic yoke is provided with an installation annular groove, and the coil is installed in the installation annular groove; the magnetic conducting disc is fixedly arranged at one end of the magnetic yoke, which is provided with the arc-shaped mounting holes, the inner side or the outer side of one end of the magnetic conducting disc, which is close to the magnetic yoke, is provided with an annular groove, and the permanent magnets are positioned in the radial range of the annular groove. The utility model not only simplifies the magnetic yoke structure and can be processed in place at one time, but also reduces the assembling difficulty of the stator.

Inventors

• HUANG JIE
• YANG BO
• HU YUE
• YANG YULONG

Assignees

• 成都超德创科技有限公司

Dates

Publication Date

20260512

Application Date

20250507

Claims (8)

1. 1. A stator is characterized by comprising a magnetic yoke, a coil, a magnetic conduction disc and a plurality of arc-shaped permanent magnets, wherein the magnetic yoke is of an integrated structure, one end of the magnetic yoke is provided with a mounting annular groove, the coil is mounted in the mounting annular groove, the other end of the magnetic yoke is provided with a plurality of arc-shaped mounting holes communicated with the mounting annular groove at intervals along the circumferential direction, the permanent magnets are mounted in the arc-shaped mounting holes in a one-to-one correspondence manner, the magnetic conduction disc is fixedly arranged at one end of the magnetic yoke, which is provided with the arc-shaped mounting holes, an annular groove is formed in the inner side or the outer side of one end of the magnetic conduction disc, which is close to the magnetic yoke, and the permanent magnets are located in the radial range of the annular groove.
2. 2. The stator of claim 1, wherein an inner side of the arcuate mounting hole is flush with an inner side of the mounting ring groove.
3. 3. The stator of claim 1, wherein an outer diameter of the magnetic guide disk is identical to an outer diameter of the yoke.
4. 4. The stator of claim 1, wherein the magnetically permeable disc is bonded to the yoke or attached by fasteners.
5. 5. A permanent magnet brake is characterized by comprising an armature, a mounting flange and the stator according to any one of claims 1-4, wherein the armature and the mounting flange are arranged at one end of the stator, which is provided with a mounting ring groove, the armature is arranged between the stator and the mounting flange, and an elastic part is arranged between the armature and the flange so as to keep the armature away from the trend of the stator.
6. 6. The permanent magnet brake according to claim 5, wherein the elastic component comprises a connecting screw and a spring, a plurality of mounting counter bores are formed in one end of the armature close to the stator at intervals along the circumferential direction, the mounting flange is connected with the armature through the connecting screw, the head of the connecting screw is located in the mounting counter bore, and the spring is arranged between the bottom of the mounting counter bore and the connecting screw.
7. 7. A permanent magnet brake according to claim 6, wherein the mounting counterbores are evenly spaced circumferentially.
8. 8. The permanent magnet brake of claim 5 wherein a bumper pad is disposed between the armature and the mounting flange, the bumper pad being secured to the mounting flange.

Description

Stator and permanent magnet brake Technical Field The utility model relates to the technical field of brakes, in particular to a stator and a permanent magnet brake. Background The brake is used as a common executive component, and can realize the speed reduction or stop of a mechanical moving part, thereby achieving the aim of control. The permanent magnetic brake is to utilize the magnetic field generated by the permanent magnet to absorb the armature to form braking, when the coil is electrified, the reverse electromagnetic force is generated to counteract the magnetic force generated by the permanent magnet, the armature is pulled back under the action of the spring, so that the armature is separated from the stator, and the braking is released. In the existing permanent magnet brake, a stator is formed by a permanent magnet, a magnet yoke and a coil, the magnet yoke is usually formed by an inner magnetic conductive cylinder and an outer magnetic conductive cylinder, a groove for installing the coil and a space for installing the permanent magnet are formed between the inner magnetic conductive cylinder and the outer magnetic conductive cylinder, the magnet yoke is complex in structure and complex in processing steps, and the assembling difficulty of the stator is increased. Disclosure of utility model The utility model aims to provide a stator and a permanent magnet brake so as to solve the defects in the prior art. The utility model is realized by the following technical scheme: A stator comprises a magnetic yoke, a coil, a magnetic conduction disc and a plurality of arc-shaped permanent magnets, wherein the magnetic yoke is of an integrated structure, one end of the magnetic yoke is provided with a mounting annular groove, the coil is mounted in the mounting annular groove, the other end of the magnetic yoke is provided with a plurality of arc-shaped mounting holes communicated with the mounting annular groove at intervals along the circumferential direction, the permanent magnets are mounted in the arc-shaped mounting holes in a one-to-one correspondence mode, the magnetic conduction disc is fixedly arranged at one end of the magnetic yoke, provided with the arc-shaped mounting holes, the inner side or the outer side of one end, close to the magnetic yoke, of the magnetic conduction disc is provided with an annular groove, and the permanent magnets are located in the radial range of the annular groove. Optionally, the inner side of the arc-shaped mounting hole is flush with the inner side of the mounting ring groove. Optionally, the outer diameter of the magnetic guide disc is identical to the outer diameter of the magnetic yoke. Optionally, the magnetic conductive disc is adhered to the magnetic yoke or connected through a fastener. The invention also provides a permanent magnet brake, which comprises an armature, a mounting flange and the stator, wherein the armature and the mounting flange are arranged at one end of the stator, which is provided with a mounting ring groove, and the armature is arranged between the stator and the mounting flange, and an elastic part is arranged between the armature and the flange so as to keep the armature away from the trend of the stator. Optionally, the elastic component includes connecting screw and spring, armature is close to stator one end and is provided with a plurality of installation counter bores along circumferencial direction interval, mounting flange passes through connecting screw with the armature and is connected, and connecting screw's head is located the installation counter bore, and the spring is located between the bottom of installation counter bore and the connecting screw. Optionally, the mounting counter bores are uniformly spaced along the circumferential direction. Optionally, a buffer pad is arranged between the armature and the mounting flange, and the buffer pad is fixed on the mounting flange. The technical scheme of the utility model has at least the following advantages and beneficial effects that the magnetic yoke is of an integrated structure, the permanent magnets are installed through the arc-shaped installation holes which are arranged on the magnetic yoke at intervals along the circumferential direction, and meanwhile, the magnetic conducting disc is matched to provide a closed magnetic circuit when the coil is electrified, so that the magnetic yoke structure is simplified, the magnetic yoke can be machined in place at one time, and the assembly difficulty of the stator is reduced. Drawings Fig. 1 is a schematic structural diagram of a stator according to the present utility model; FIG. 2 is a top view (hidden coil) of FIG. 1; Fig. 3 is a schematic structural view of a yoke; FIG. 4 is a schematic diagram of a magnetic disk; FIG. 5 is a schematic diagram of an electromagnetic brake according to the present utility model; The reference numerals comprise a 1-stator, a 101-magnetic yoke, 1011-mounting ring grooves, 1012-arc-sha