CN-224201007-U - Flat permanent magnet brake

Abstract

The utility model discloses a flat permanent magnet brake which comprises a brake body, wherein an outer flange, an armature, an inner flange, an inner magnetic pole, a permanent magnet and a magnetic shell are coaxially arranged to form the brake body, a pre-stretching elastic element is arranged between the outer flange and the armature, the elastic element continuously pulls the armature to move towards the outer flange, a containing groove is formed in the magnetic shell, a permanent magnet and a coil are arranged in the containing groove, the diameter of the permanent magnet is larger than that of the coil, the permanent magnet is arranged outside the coil, the permanent magnet is fixedly connected with the inner magnetic pole, the containing groove is further provided with the inner flange, the inner magnetic pole and the permanent magnet form a closed space, the closed space is at least provided with a gap, and the coil is arranged in the closed space. The utility model does not damage the external dimension of the geometric body of the brake, can greatly compress the thickness of the brake, has large output braking force and more stable performance.

Inventors

• HUANG QINQIU

Assignees

• 苏州极湃电磁科技有限公司

Dates

Publication Date

20260505

Application Date

20250701

Claims (4)

1. 1. A flat permanent magnetic brake comprises a brake body formed by coaxially arranging an outer flange (1), an armature (2), an inner flange (3), an inner magnetic pole (4), a permanent magnet (5) and a magnetic shell (6), and is characterized in that a pretensioned elastic element is arranged between the outer flange (1) and the armature (2), and the elastic element continuously pulls the armature (2) to move towards the outer flange; An accommodating groove is formed in the magnetic shell (6), a permanent magnet (5) and a coil (7) are arranged in the accommodating groove, the diameter of the permanent magnet (5) is larger than that of the coil (7), and the permanent magnet (5) is arranged at the outer side of the coil (7); The permanent magnet (5) is fixedly connected with the inner magnetic pole (4), the accommodating groove is further provided with an inner flange (3), the inner magnetic pole (4) and the permanent magnet (5) form an accommodating groove into a closed space, the closed space is at least provided with one gap, and the coil (7) is arranged in the closed space.
2. 2. A flat permanent-magnet brake according to claim 1, characterized in that the gap is arranged between the inner flange (3) and the inner pole (4).
3. 3. A flat permanent-magnet brake according to claim 1, characterized in that the permanent magnets (5) are tile-shaped, ring-shaped or block-shaped distributed around the flange axis.
4. 4. The flat permanent magnet brake according to claim 1, characterized in that the inner pole (4) and the magnetic shell (6) are made of soft magnetic material.

Description

Flat permanent magnet brake Technical Field The utility model belongs to the technical field of brakes, and particularly relates to a flat permanent magnet brake. Background The power-off brake mainly comprises the steps of generating attraction force outwards through the magnetic force lines of the permanent magnet to form a magnetic yoke surface so as to achieve the purpose of attracting a brake pad, a frame and the like to achieve braking force output, generating a magnetic field opposite to the magnetic force lines of the permanent magnet through the energization of a coil, and counteracting the magnetic force of the permanent magnet, namely reducing or eliminating the magnetic force lines of the magnetic yoke surface and losing the attraction force to the brake pad or the frame so as to achieve braking unlocking. However, at present, the permanent magnets and the coils are vertically overlapped, so that the overall height of the brake is difficult to reduce, or enough space for placing the coils is not available after the height is reduced, so that the number of turns of the coils is small, the impedance is small, the heating power is large, and the application scene of the brake is limited. Disclosure of utility model In order to solve the technical problems, the utility model adopts the following technical scheme: A flat permanent magnetic brake comprises a brake body formed by coaxially arranging an outer flange, an armature, an inner flange, an inner magnetic pole, a permanent magnet and a magnetic shell, wherein a pre-stretching elastic element is arranged between the outer flange and the armature, and the elastic element continuously pulls the armature to move towards the outer flange; The magnetic shell is internally provided with an accommodating groove, the accommodating groove is internally provided with a permanent magnet and a coil, the diameter of the permanent magnet is larger than that of the coil, and the permanent magnet is arranged at the outer side of the coil; The permanent magnet is also fixedly connected with an inner magnetic pole, the accommodating groove is further provided with an inner flange, the inner magnetic pole and the permanent magnet form a closed space with the accommodating groove, the closed space is at least provided with a gap, and the coil is arranged in the closed space. Further, the gap is arranged between the inner flange and the inner magnetic pole. Further, the permanent magnets are tile-shaped, ring-shaped or block-shaped and distributed around the axis of the flange. Further, the inner magnetic pole and the magnetic shell are made of soft magnetic materials. The utility model has the beneficial effects that: The utility model abandons the traditional design mode of superposition of the permanent magnet and the coil, the permanent magnet is arranged outside the coil, the overall dimension of the geometric body of the brake is not damaged, the thickness of the brake can be greatly compressed, a large braking force can be output, the permanent magnet and the coil are coaxially arranged, and the reverse counteracting magnetic field can be linearly adjusted by adjusting the current, so that the braking force is linearly adjusted, the performance is more stable, and the regulation and the control are accurate. The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings. Drawings FIG. 1 is an overall exploded view of the present utility model; FIG. 2 is a schematic diagram of the coil of the present utility model in an energized state; FIG. 3 is a schematic diagram of the coil of the present utility model in a power-off state; FIG. 4 is a schematic diagram of the magnetic force simulation of the coil of the present utility model when energized; FIG. 5 shows the coil de-energized according to the utility model a time magnetic force simulation schematic diagram; Reference numerals illustrate: 1. The magnetic pole comprises an outer flange, 2, an armature, 3, an inner flange, 4, an inner magnetic pole, 5, a permanent magnet, 6, a magnetic shell, 7 and a coil. Detailed Description The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model. Specific examples: The flat permanent magnetic brake as shown in fig. 1 to 5 comprises a brake body formed by coaxially arranging an outer flange 1, an armature 2, an inner flange 3, an inner magnetic pole 4, a permanent magnet 5 and a magnetic shell 6, wherein a pre-stretching elastic element (the prior art is not shown i