Permanent magnet brake fixing assembly for servo motor

Abstract

The utility model discloses a permanent magnet brake fixing assembly for a servo motor, which relates to the technical field of servo motors and comprises a shell and a connecting assembly, a motor shell is arranged outside the shell, a rotating sleeve is rotatably connected in the shell, the connecting assembly is arranged in the rotating sleeve, and the motor shell is connected with the connecting assembly. And the connecting assembly comprises a limiting groove, a limiting block, a limiting sleeve, a connecting groove and a baffle ring, the limiting groove is formed in the rotating sleeve, and the limiting block is slidably connected into the limiting groove. According to the permanent magnet brake fixing assembly for the servo motor, through the arrangement of the connecting assembly, when the permanent magnet brake fixing assembly is connected with rotor shafts of different shapes, blocking on a limiting block can be relieved only by unscrewing a baffle ring and detaching the baffle ring from a rotating sleeve, so that an internal limiting sleeve is conveniently detached and replaced, and after the interior of a connecting groove of a corresponding shape is replaced, the limiting sleeve can be conveniently detached and replaced. After the baffle ring is installed on the rotating sleeve again, the limiting block can be positioned, and then the motor shaft can be quickly connected only by sleeving the limiting sleeve on the motor shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of servo motors, in particular to a permanent magnet brake fixing assembly for a servo motor. Background Art

[0002] A servo motor is an electric motor that can precisely control the angle or position. It can quickly and accurately adjust the rotor position according to the control signal. It is widely used in industrial automation, robotics, aerospace and other fields. Through the permanent magnet brake, the servo motor can be braked when the power is cut off.

[0003] For example, the utility model with application number CN202222554822.7 discloses a permanent magnet brake. The magnetic field generated by the permanent magnet of the utility model passes through the magnetic shell and the iron core, and can form a magnetic end at the open end of the magnetic shell 1 and the iron core, generating an attractive force to adsorb or pull the armature, so that the armature is adsorbed on the magnetic shell and the iron core or forms a braking friction with the magnetic shell and the iron core to achieve a braking or adsorption effect. However, this type of permanent magnet brake needs to install the connecting flange on the output shaft during installation, and the shape of the hole inside the connecting flange is single, and can only be adapted to a rotating shaft of a specific shape, resulting in certain limitations in use.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a permanent magnet brake fixing assembly for a servo motor is provided. Utility Model Content

[0005] The purpose of the utility model is to provide a permanent magnet brake fixing assembly for a servo motor to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a permanent magnet brake fixing assembly for a servo motor, comprising a shell and a connecting assembly, wherein a motor shell is arranged on the outside of the shell, and a rotating sleeve is rotatably connected to the inside of the shell, and the connecting assembly is arranged inside the rotating sleeve, and the connecting assembly comprises a limit groove, a limit block, a limit sleeve, a connecting groove and a retaining ring, a limit groove is provided inside the rotating sleeve, and the limit groove is slidably connected to the inside of the limit groove, a limit sleeve is fixed on one side of the limit block, and a connecting groove is provided inside the limit sleeve, a retaining ring is provided on one side of the limit block, and the retaining ring is threadedly connected to the rotating sleeve.

[0007] Furthermore, a permanent magnet is disposed inside one end of the shell, an iron core is disposed on one side of the permanent magnet, and a coil is disposed outside one end of the iron core.

[0008] Furthermore, a tension spring is arranged on the outer side of one end of the rotating sleeve, and one end of the tension spring is connected to a sliding block, and the sliding block is slidably connected to the rotating sleeve.

[0009] Furthermore, one end of the slider is connected to a brake ring, and a brake pad is fixed to one side of the brake ring and one side of the shell.

[0010] Furthermore, a positioning assembly is provided at the outer end of the shell, and the positioning assembly includes a fixed ring and a rotating ring. The fixed ring is placed on one side of the shell, and the outer part of the fixed ring is rotatably connected to the rotating ring.

[0011] Furthermore, the positioning assembly also includes an avoidance opening and a positioning pin. The avoidance opening is provided inside the outer end of the rotating ring, and a positioning pin penetrates one end of the rotating ring.

[0012] Furthermore, the positioning assembly also includes a top block, a clamping block and a clamping slot, one side of the rotating ring is slidably connected to the top block, and one side of the top block is slidably connected to the clamping block, and the inner side of the motor housing is provided with a clamping slot.

[0013] Furthermore, the positioning pin is engaged with the shell, and the shell is slidably connected to the clamping block.

[0014] The utility model provides a permanent magnet brake fixing assembly for a servo motor, which has the following beneficial effects:

[0015] 1. The utility model is provided with a connection assembly. When connecting with rotor shafts of different shapes, it is only necessary to loosen the retaining ring and remove it from the rotating sleeve to release the obstruction of the limit block, thereby facilitating the removal and replacement of the internal limit sleeve. After replacing the corresponding shape of the connection groove, the retaining ring is reinstalled on the rotating sleeve to position the limit block. After that, it is only necessary to put the limit sleeve on the motor shaft to quickly connect it, which is conducive to improving the adaptation range of the permanent magnet brake;

[0016] 2. The utility model provides a positioning component. When fixing the permanent magnet brake in the motor housing, it is only necessary to remove the positioning pin and adjust the rotating ring to align the avoidance opening with the top block. At this time, the permanent magnet will absorb the iron block and automatically retract it into the housing. After the housing is inserted into the motor housing, the rotating ring is rotated to squeeze the top block through the inclined surface of the outer end of the top block, so that the top block is driven to move up, so that all the blocks are inserted into the slots at the same time, and the housing and the motor housing are quickly connected. After the rotating ring and the housing are connected by the positioning pin, the permanent magnet will also absorb the positioning pin to prevent the rotating ring from rotating, thereby enhancing the stability after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a permanent magnet brake fixing assembly for a servo motor of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a housing of a permanent magnet brake fixing assembly for a servo motor of the utility model;

[0019] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of a rotating sleeve of a permanent magnet brake fixing assembly for a servo motor.

[0020] In the figure: 1. outer shell; 2. motor shell; 3. rotating sleeve; 4. permanent magnet; 5. iron core; 6. coil; 7. tension spring; 8. slider; 9. brake ring; 10. brake pad; 11. connecting component; 1101. limit groove; 1102. limit block; 1103. limit sleeve; 1104. connecting groove; 1105. retaining ring; 12. positioning component; 1201. fixed ring; 1202. rotating ring; 1203. avoidance; 1204. positioning pin; 1205. top block; 1206. clamping block; 1207. clamping slot. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] like Figures 1 to 3As shown, a permanent magnet brake fixing assembly for a servo motor comprises a shell 1 and a connecting assembly 11, a motor shell 2 is arranged outside the shell 1, and a rotating sleeve 3 is rotatably connected inside the shell 1, a permanent magnet 4 is arranged inside one end of the shell 1, and an iron core 5 is arranged on one side of the permanent magnet 4, and a coil 6 is arranged on the outside of one end of the iron core 5, a tension spring 7 is arranged on the outside of one end of the rotating sleeve 3, and a slider 8 is connected to one end of the tension spring 7, and the slider 8 is slidably connected to the rotating sleeve 3, a brake ring 9 is connected to one end of the slider 8, and a brake pad 10 is fixed to one side of the brake ring 9 and one side of the shell 1, the permanent magnet 4 can absorb the iron brake ring 9, so that the two brake pads 10 are tightly attached, so that the rotation of the rotating sleeve 3 is limited by the slider 8, and the braking operation of the servo motor is realized, and when the coil 6 is energized, the magnetic field generated will offset the magnetic attraction of the brake ring 9, and at this time the tension spring 7 can pull the brake ring 9 to loosen the brake pad 10, so that the servo motor can be braked. The servo motor works normally, the connecting component 11 is arranged inside the rotating sleeve 3, and the connecting component 11 includes a limit groove 1101, a limit block 1102, a limit sleeve 1103, a connecting groove 1104 and a retaining ring 1105. The limit groove 1101 is provided inside the rotating sleeve 3, and the limit groove 1101 is slidably connected to the limit block 1102 inside, and the limit sleeve 1103 is fixed on one side of the limit block 1102, and the limit sleeve 1103 is provided inside the connecting groove 1104. 104, a retaining ring 1105 is provided on one side of the limit block 1102, and the retaining ring 1105 is threadedly connected to the rotating sleeve 3. The retaining ring 1105 only needs to be loosened and removed from the rotating sleeve 3 to remove the obstruction to the limit block 1102, thereby facilitating the disassembly and replacement of the internal limit sleeve 1103. After replacing the corresponding shape of the connecting groove 1104, the retaining ring 1105 can be reinstalled on the rotating sleeve 3 to position the limit block 1102.

[0023] like Figure 1 and Figure 2As shown, a positioning assembly 12 is provided at the outer end of the housing 1, and the positioning assembly 12 includes a fixed ring 1201 and a rotating ring 1202. The fixed ring 1201 is arranged on one side of the housing 1, and the outer part of the fixed ring 1201 is rotatably connected to the rotating ring 1202. The outer side of the fixed ring 1201 is inclined, which can limit the rotating ring 1202. The positioning assembly 12 also includes an avoidance opening 1203 and a positioning pin 1204. The avoidance opening 1203 is provided inside the outer end of the rotating ring 1202, and the positioning pin 1204 penetrates one end of the rotating ring 1202. The positioning assembly 12 also includes a top block 1205, a clamping block 1206 and a clamping groove 1207. The top block 1205 is slidably connected to one side of the rotating ring 1202, and the clamping block 1206 is slidably connected to one side of the top block 1205. The inner side of the motor housing 2 is provided with a clamping groove. 1207, adjust the rotating ring 1202 to align the avoidance opening 1203 with the top block 1205, at this time, the permanent magnet 4 will absorb the iron block 1206, so that it will automatically retract into the shell 1, and after the shell 1 is inserted into the motor shell 2, rotate the rotating ring 1202 again, so that the top block 1205 is squeezed by the inclined surface of the outer end of the top block 1205, so that it drives the block 1206 to move upward, so that all the blocks 1206 are inserted into the slots 1207 at the same time, and the shell 1 and the motor shell 2 are quickly connected, the positioning pin 1204 is engaged with the shell 1, and the shell 1 and the block 1206 are slidably connected. After the rotating ring 1202 is connected to the shell 1 by the positioning pin 1204, the permanent magnet 4 will also absorb the positioning pin 1204 to prevent the rotating ring 1202 from rotating, thereby enhancing the stability after installation.

[0024] In summary, the servo motor uses a permanent magnet brake fixing component. When using it, first follow the Figure 1 , Figure 2 and Figure 3, first loosen the retaining ring 1105 and remove it from the rotating sleeve 3, so as to release the obstruction of the limit block 1102, thereby facilitating the disassembly and replacement of the internal limit sleeve 1103, and after replacing the connecting groove 1104 of the corresponding shape, reinstall the retaining ring 1105 on the rotating sleeve 3 to position the limit block 1102, and then only need to sleeve the limit sleeve 1103 on the motor shaft to quickly connect it, and then remove the positioning pin 1204 and adjust the rotating ring 1202 to align the avoidance opening 1203 with the top block 1205, at this time the permanent magnet 4 will absorb the iron block 1206, so that it will automatically retract into the inside of the outer shell 1, and after the outer shell 1 is inserted into the motor shell 2, the rotating ring 1202 is rotated, so as to tilt the outer end of the top block 1205. The inclined surface squeezes the top block 1205, causing it to drive the card block 1206 to move upward, so that all the card blocks 1206 are inserted into the card slot 1207 at the same time, and the outer shell 1 and the motor shell 2 are quickly connected. After the rotating ring 1202 is connected to the outer shell 1 using the positioning pin 1204, the permanent magnet 4 will also absorb the positioning pin 1204, thereby enhancing the stability after installation. Finally, when no power is supplied, the permanent magnet 4 can absorb the iron brake ring 9, so that the two brake pads 10 are tightly attached, thereby limiting the rotation of the rotating sleeve 3 through the slider 8, and realizing the braking operation of the servo motor. During the operation, when the coil 6 is energized, the magnetic field generated will offset the magnetic attraction of the brake ring 9. At this time, the tension spring 7 can pull the brake ring 9 to loosen the brake pad 10, thereby enabling the servo motor to work normally.

[0025] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A permanent magnet brake fixing assembly for a servo motor, comprising a housing (1) and a connecting assembly (11), characterized in that: A motor housing (2) is arranged outside the housing (1), and a rotating sleeve (3) is rotatably connected inside the housing (1); the connecting component (11) is arranged inside the rotating sleeve (3); the connecting component (11) comprises a limiting groove (1101), a limiting block (1102), a limiting sleeve (1103), a connecting groove (1104) and a retaining ring (1105); a limiting groove (1101) is arranged inside the rotating sleeve (3), and the limiting block (1102) is slidably connected inside the limiting groove (1101); the limiting sleeve (1103) is fixed on one side of the limiting block (1102), and a connecting groove (1104) is arranged inside the limiting sleeve (1103); a retaining ring (1105) is arranged on one side of the limiting block (1102), and the retaining ring (1105) is threadedly connected to the rotating sleeve (3).

2. A permanent magnet brake fixing assembly for a servo motor according to claim 1, characterized in that: A permanent magnet (4) is disposed inside one end of the housing (1), an iron core (5) is disposed on one side of the permanent magnet (4), and a coil (6) is disposed outside one end of the iron core (5).

3. The permanent magnet brake fixing assembly for a servo motor according to claim 1, characterized in that: A tension spring (7) is arranged on the outside of one end of the rotating sleeve (3), and one end of the tension spring (7) is connected to a sliding block (8), and the sliding block (8) is slidably connected to the rotating sleeve (3).

4. The permanent magnet brake fixing assembly for a servo motor according to claim 3, characterized in that: One end of the slider (8) is connected to a brake ring (9), and a brake pad (10) is fixed to one side of the brake ring (9) and one side of the housing (1).

5. The permanent magnet brake fixing assembly for a servo motor according to claim 1, characterized in that: A positioning assembly (12) is provided at the outer end of the housing (1), and the positioning assembly (12) comprises a fixed ring (1201) and a rotating ring (1202). The fixed ring (1201) is arranged on one side of the housing (1), and the outer portion of the fixed ring (1201) is rotatably connected to the rotating ring (1202).

6. A permanent magnet brake fixing assembly for a servo motor according to claim 5, characterized in that: The positioning assembly (12) further comprises an avoidance opening (1203) and a positioning pin (1204); the avoidance opening (1203) is provided inside the outer end of the rotating ring (1202), and the positioning pin (1204) penetrates one end of the rotating ring (1202).

7. A permanent magnet brake fixing assembly for a servo motor according to claim 6, characterized in that: The positioning assembly (12) further comprises a top block (1205), a clamping block (1206) and a clamping slot (1207); one side of the rotating ring (1202) is slidably connected to the top block (1205), and one side of the top block (1205) is slidably connected to the clamping block (1206); and the inner side of the motor housing (2) is provided with a clamping slot (1207).

8. The permanent magnet brake fixing assembly for a servo motor according to claim 7, characterized in that: The positioning pin (1204) is engaged with the outer shell (1), and the outer shell (1) is slidably connected to the clamping block (1206).

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