CN218940270U

CN218940270U - Carbon brush abrasion power-off device of electric tool

Info

Publication number: CN218940270U
Application number: CN202223480655.2U
Authority: CN
Inventors: 徐金松; 韩青松; 蔡炜; 郭志红; 夏冬梅
Original assignee: Yangzhou Jinli Power Tools Co ltd
Current assignee: Yangzhou Jinli Power Tools Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-04-28
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a carbon brush abrasion power-off device of an electric tool, which relates to the technical field of electric tool motors and comprises a shell and a power-off assembly, wherein a fixing assembly for disassembly and assembly is arranged at the right part of the shell, a prompting assembly for prompting is arranged in the fixing assembly, the power-off assembly for power off is arranged at the inner side of the fixing assembly, the power-off assembly comprises a sliding frame, a limiting groove, a limiting plate, a carbon brush, a connecting piece and a reed, the sliding frame is symmetrically arranged at the inner side of the fixing assembly, the limiting grooves are formed in the side, close to the sliding frame, of the sliding frame, the limiting groove is embedded and connected with the limiting plate, the carbon brush is fixedly connected to one side, far away from the fixing assembly, of the limiting plate, the connecting piece is fixedly connected to the other side of the limiting plate, and the reed is arranged above the connecting piece. According to the utility model, through the matching of parts of each part, when the electric tool is used, the waste of the carbon brush can be reduced, and the power failure can be automatically performed after the carbon brush is worn, so that the damage of the commutator is avoided.

Description

Carbon brush abrasion power-off device of electric tool

Technical Field

The utility model relates to the technical field of electric tool motors, in particular to a carbon brush abrasion power-off device of an electric tool.

Background

The carbon brush is a sliding contact part for transmitting electric energy of an electric tool, is made of conductive carbon powder, copper powder, coagulant and the like, can be longitudinally and slidably arranged on a carbon brush frame, is provided with a coil spring and is tightly pressed on a commutator of a motor through the coil spring, the existing carbon brush has a simple structure, the vibration force generated by the rotation of the motor is large, and when the carbon brush is worn, the commutator is rubbed with iron to cause serious damage due to untimely replacement, so that the service life of the motor is shortened; in order to prevent the carbon brush from being damaged after being worn, some people replace the carbon brush after the carbon brush is not completely worn, which causes serious waste of the carbon brush and greatly increases the use cost.

The existing power-off device is complex in structure, high in matching precision requirement, high in production difficulty, unstable in work, often incapable of playing a role and still needs to be further improved.

Accordingly, in view of the above, an improvement of the conventional structure and the conventional defects is proposed to provide a carbon brush abrasion power-off device for an electric tool.

Disclosure of Invention

The utility model aims to provide a carbon brush abrasion power-off device of an electric tool, which is used for solving the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an electric tool carbon brush wearing and tearing outage device, includes shell and outage subassembly, the shell right part is provided with the fixed subassembly that is used for the dismouting, and is provided with the suggestion subassembly that is used for the suggestion in the fixed subassembly for outage the outage subassembly sets up in fixed subassembly inboard, outage subassembly includes sliding frame, spacing groove, limiting plate, carbon brush, even electric piece and reed, the inboard symmetry of fixed subassembly is provided with the sliding frame, and the spacing groove has all been seted up to one side that the sliding frame is close mutually, the gomphosis is connected with the limiting plate in the spacing groove, and one side fixedly connected with carbon brush that the fixed subassembly was kept away from to the limiting plate, limiting plate opposite side fixedly connected with even electric piece, and even electric piece top is provided with the reed, the sliding frame is provided with two altogether.

Furthermore, the limiting plate is in sliding connection with the sliding frame through the limiting groove, and the carbon brush is not in contact with the sliding frame.

Further, fixed subassembly includes mounting groove, mounting panel and fixing bolt, the mounting groove has been seted up at the shell right part, and the gomphosis is connected with the mounting panel in the mounting groove, and mounting panel left and right sides symmetry is provided with fixing bolt.

Furthermore, the fixing bolt is in threaded connection with the mounting plate and the shell, the sliding frame and the reed are in fixed connection with the mounting plate, and the carbon brush is in elastic connection with the mounting plate through the reed.

Further, the suggestion subassembly includes contact and bulb, be provided with the contact in the spacing inslot, mounting panel surface fixedly connected with bulb, the bulb passes through the internal circuit and is connected with the contact.

Further, the shell inner wall fixedly connected with stator, and shell right side fixedly connected with packing ring, the inboard rotation of packing ring is connected with the pivot, and pivot middle part fixedly connected with rotor, the pivot passes through the packing ring and rotates with the shell and be connected.

Furthermore, the right part of the rotating shaft is fixedly connected with commutators, two commutators are symmetrically distributed on the rotating shaft, and the commutators are attached to the carbon brushes.

The utility model provides a carbon brush abrasion power-off device of an electric tool, which has the following beneficial effects: according to the carbon brush abrasion power-off device of the electric tool, through the cooperation among parts, the waste of carbon brushes can be reduced when the electric tool is used, and the power-off can be automatically performed after the carbon brushes are abraded, so that the damage to a commutator is avoided;

1. according to the utility model, through the arrangement of the power-off assembly, when the electric tool is used, the reed can press the limiting plate to move in the limiting groove, so that pressure is applied to the carbon brush, the working part of the carbon brush is tightly attached to the surface of the commutator, and when the limiting plate moves to the end, close to the commutator, of the limiting groove, the carbon brush stops moving, so that the working part of the carbon brush is automatically separated from the commutator for power off after being worn, and damage to the commutator is avoided;

2. according to the utility model, through the arrangement of the fixing component, when the installation is performed, the installation plate is only required to be embedded into the installation groove, and then the fixing bolt is screwed on the installation plate to fix the installation plate, so that the power-off component is in contact with the commutator, and when the installation is performed, the carbon brush is replaced only by unscrewing the bolt, the whole disassembly of the shell is not required, and the disassembly and assembly process is simplified;

3. according to the utility model, through the arrangement of the prompting component, after the carbon brush and the commutator are separated and powered off, the limiting plate is contacted with the contact because the limiting groove is moved to be close to one end of the commutator, so that the bulb is powered through the contact, the bulb is enabled to be lightened to prompt a worker, and the worker can conveniently replace the carbon brush in time.

Drawings

FIG. 1 is a schematic cross-sectional front view of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

fig. 3 is a schematic perspective view of a mounting plate according to the present utility model.

In the figure: 1. a housing; 2. a fixing assembly; 201. a mounting groove; 202. a mounting plate; 203. a fixing bolt; 3. a prompting component; 301. a contact; 302. a bulb; 4. a power-off assembly; 401. a sliding frame; 402. a limit groove; 403. a limiting plate; 404. a carbon brush; 405. a connecting piece; 406. a reed; 5. a stator; 6. a gasket; 7. a rotating shaft; 8. a rotor; 9. a commutator.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1, fig. 2 and fig. 3, a wear and tear power-off device for carbon brushes of an electric tool, which comprises a housing 1 and a power-off assembly 4, wherein a fixed assembly 2 used for dismounting is arranged on the right part of the housing 1, a prompting assembly 3 used for prompting is arranged in the fixed assembly 2, the power-off assembly 4 used for power off is arranged on the inner side of the fixed assembly 2, the power-off assembly 4 comprises a sliding frame 401, a limiting groove 402, a limiting plate 403, carbon brushes 404, a connecting piece 405 and a reed 406, the sliding frame 401 is symmetrically arranged on the inner side of the fixed assembly 2, the limiting groove 402 is respectively formed in one side, which is close to the sliding frame 401, a limiting plate 403 is connected in the limiting groove 402 in a jogging manner, a carbon brush 404 is fixedly connected with the connecting piece 405 on the other side, which is far away from the fixed assembly 2, the reed 406 is arranged above the connecting piece 405, the sliding frame 401 is arranged in two in total, the limiting plate 403 is connected with the sliding frame 401 in a sliding manner, and the carbon brushes 404 are not contacted with the sliding frame 401, when the electric tool is used, the reed 406 can press the limiting plate 403 in the sliding frame 401, and the carbon brushes 404 can move in the limiting groove so that the carbon brushes 404 can move in the limiting groove, and the limiting plate 404 can be prevented from being close to the commutator 9, and the commutator 404 and the commutator 9, the commutator 9 is broken, the commutator 9 is prevented from moving, the commutator 404 and the commutator 9 is broken, and the commutator 9 is prevented from being worn from being broken.

As shown in fig. 1, fig. 2 and fig. 3, the fixing assembly 2 comprises a mounting groove 201, a mounting plate 202 and a fixing bolt 203, the right part of the housing 1 is provided with the mounting groove 201, the mounting groove 201 is internally embedded and connected with the mounting plate 202, the fixing bolt 203 is symmetrically arranged at the left side and the right side of the mounting plate 202, the fixing bolt 203 is in threaded connection with the mounting plate 202 and the housing 1, the sliding frame 401 and the reed 406 are fixedly connected with the mounting plate 202, and the carbon brush 404 is elastically connected with the mounting plate 202 through the reed 406, and the fixing assembly 2 is arranged.

As shown in fig. 1 and 2, the prompting component 3 comprises a contact 301 and a bulb 302, the contact 301 is arranged in a limit groove 402, the bulb 302 is fixedly connected to the surface of the mounting plate 202, and the bulb 302 is connected with the contact 301 through an internal circuit. The inner wall fixedly connected with stator 5 of shell 1, and shell 1 right side fixedly connected with packing ring 6, the inboard rotation of packing ring 6 is connected with pivot 7, and pivot 7 middle part fixedly connected with rotor 8, pivot 7 passes through packing ring 6 and shell 1 rotation to be connected, pivot 7 right part fixedly connected with commutator 9, and commutator 9 symmetrical distribution has two in pivot 7, commutator 9 and carbon brush 404 laminating, through the setting of suggestion subassembly 3, make after carbon brush 404 and commutator 9 separation outage, limiting plate 403 is close to commutator 9 one end because moving to limiting groove 402, and contact 301, thereby supply power to bulb 302 through contact 301, make bulb 302 light and suggest the staff, the staff of being convenient for in time change carbon brush 404.

In summary, when the electric tool carbon brush abrasion power-off device is used, firstly, according to the structure shown in fig. 1, fig. 2 and fig. 3, the mounting plate 202 is embedded into the mounting groove 201, then the fixing bolt 203 is screwed on the mounting plate 202, and the mounting plate 202 is fixed, so that the power-off assembly 4 is in contact with the commutator 9, when the electric tool is used, the reed 406 can press the limiting plate 403 to move in the limiting groove 402, so as to apply pressure to the carbon brush 404, the working part of the carbon brush 404 is tightly attached to the surface of the commutator 9, when the limiting plate 403 moves to the end, close to the commutator 9, of the limiting groove 402, after the working part of the carbon brush 404 is worn, the carbon brush 404 and the commutator 9 are automatically separated and cut off, damage to the commutator 9 is avoided, after the carbon brush 404 and the commutator 9 are separated and cut off, the limiting plate 403 is moved to the end, close to the commutator 9, and is in contact with the contact 301, so that the bulb 302 is powered on through the contact 301, so that the bulb 302 is used for prompting a worker, the worker to replace the carbon brush 404 in time, and the whole is required to be removed by unscrewing the bolt, and the shell 1 is not required to be replaced.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides an electric tool carbon brush wearing and tearing outage device, includes shell (1) and outage subassembly (4), its characterized in that, shell (1) right part is provided with fixed subassembly (2) that are used for the dismouting, and is provided with in fixed subassembly (2) and be used for the outage suggestion subassembly (3) are provided with in fixed subassembly (2) inboard, outage subassembly (4) include sliding frame (401), spacing groove (402), limiting plate (403), carbon brush (404), even electric piece (405) and reed (406), the inboard symmetry of fixed subassembly (2) is provided with sliding frame (401), and limiting groove (402) have all been seted up to one side that sliding frame (401) are close, the gomphosis is connected with limiting plate (403) in limiting groove (402), and one side fixedly connected with carbon brush (404) that limiting plate (403) kept away from fixed subassembly (2), limiting plate (403) opposite side fixedly connected with even electric piece (405), and even electric piece (405) top is provided with reed (406), sliding frame (401) are provided with two altogether.

2. The carbon brush abrasion power-off device of the electric tool according to claim 1, wherein the limiting plate (403) is slidably connected with the sliding frame (401) through the limiting groove (402), and the carbon brush (404) is not in contact with the sliding frame (401).

3. The carbon brush abrasion power-off device for the electric tool according to claim 1, wherein the fixing assembly (2) comprises a mounting groove (201), a mounting plate (202) and a fixing bolt (203), the mounting groove (201) is formed in the right portion of the housing (1), the mounting plate (202) is connected in the mounting groove (201) in a jogged mode, and the fixing bolts (203) are symmetrically arranged on the left side and the right side of the mounting plate (202).

4. The carbon brush abrasion power-off device of the electric tool according to claim 3, wherein the fixing bolt (203) is in threaded connection with the mounting plate (202) and the shell (1), the sliding frame (401) and the reed (406) are fixedly connected with the mounting plate (202), and the carbon brush (404) is elastically connected with the mounting plate (202) through the reed (406).

5. The device for power failure in abrasion of a carbon brush of an electric tool according to claim 3, wherein the prompting component (3) comprises a contact (301) and a bulb (302), the contact (301) is arranged in the limiting groove (402), the bulb (302) is fixedly connected to the surface of the mounting plate (202), and the bulb (302) is connected with the contact (301) through an internal circuit.

6. The carbon brush abrasion power-off device of an electric tool according to claim 1, wherein the inner wall of the housing (1) is fixedly connected with a stator (5), the right side of the housing (1) is fixedly connected with a gasket (6), the inner side of the gasket (6) is rotationally connected with a rotating shaft (7), the middle part of the rotating shaft (7) is fixedly connected with a rotor (8), and the rotating shaft (7) is rotationally connected with the housing (1) through the gasket (6).

7. The power-off device for carbon brush abrasion of the electric tool according to claim 6, wherein the right part of the rotating shaft (7) is fixedly connected with commutators (9), the commutators (9) are symmetrically distributed on the rotating shaft (7), and the commutators (9) are attached to the carbon brushes (404).