Series excited motor convenient for replacing carbon brush

Abstract

The utility model discloses a series excited motor convenient to replace a carbon brush, comprising a housing, one end of the housing is provided with an installation assembly, the inner wall of an installation end cover is provided with an auxiliary assembly, through the installation assembly arranged on the housing, the carbon brush can be replaced without the help of a plurality of tools for long-time disassembly and assembly, and the replacement efficiency is improved. Compared with the prior art, time and labor cost required for replacing the carbon brush are greatly shortened, production stagnation or equipment idle time caused by carbon brush replacement is shortened, flexibility and timeliness of equipment maintenance are improved, meanwhile, an auxiliary assembly is arranged on the installation end cover, the carbon brush can be conveniently and rapidly disassembled and replaced, and the service life of the carbon brush is prolonged. The surface of the carbon brush and the surface of the commutator can be cleaned in real time, impurities such as powder attached to the surfaces of the carbon brush and the commutator are effectively removed, good contact between the carbon brush and the commutator is ensured, stable conductivity is maintained, and the surface of the commutator is flexibly cleaned; and the risks of poor conductivity, motor performance reduction and even damage caused by impurity accumulation are reduced.

Description

Technical Field

[0001] This utility model relates to the field of series motor technology, and more specifically, to a series motor with easily replaceable carbon brushes. Background Technology

[0002] Series-wound motors, also known as general-purpose motors or commutator motors, are very common in many applications, such as power tools and household appliances. Carbon brushes are an important component of these motors; they conduct current to the motor windings by contacting the rotating commutator. However, with the passage of time, carbon brushes gradually wear down and need to be replaced to ensure the normal operation of the motor.

[0003] However, as the series motor continues to run, the carbon brushes will inevitably wear down gradually. When they wear down to a certain extent, they must be replaced in time. However, the carbon brush replacement operation of the series motor is often extremely cumbersome and inconvenient. This not only consumes a lot of time and manpower, but also, during the use of the carbon brushes, some powder and other impurities will adhere to their surface and the parts that contact the commutator. If these impurities are not cleaned in time and effectively, the conductivity of the motor will decrease, thereby affecting the performance of the motor.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a series-wound motor that facilitates carbon brush replacement, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A series-wound motor with easy carbon brush replacement includes a housing. One end of the housing is provided with a mounting assembly. The mounting assembly includes a fixing seat fixedly disposed at one end of the housing. The inner wall of the fixing seat has equally spaced limiting holes. A spring-loaded telescopic rod is fixed to the inner wall of the limiting holes. A limiting block is fixed to one end of the spring-loaded telescopic rod. One end of the limiting block contacts a mounting end cover. One end of the mounting end cover is engaged with the inner wall of the fixing seat.

[0008] Furthermore, to better facilitate the installation and cleaning of carbon brushes and to assist in cleaning the commutator, an auxiliary assembly is provided on the inner wall of the mounting end cover. The auxiliary assembly includes multiple auxiliary seats fixedly mounted on the inner wall of the mounting end cover. Each auxiliary seat has a guide groove, and a limiting plate is provided on the inner wall of the guide groove. One side of the limiting plate is engaged with the inner wall of the auxiliary seat, and a carbon brush is mounted on one side of the limiting plate and the inner wall of the auxiliary seat. A cleaning brush 1 is in contact with the surface of the carbon brush. One side of the cleaning brush 1 is fixed to the inner wall of the auxiliary seat and one side of the limiting plate. An auxiliary rod passes through the mounting end cover, and a cleaning brush 2 is fixed to one end of the auxiliary rod. An auxiliary spring is sleeved on the surface of the auxiliary rod, and both ends of the auxiliary spring are connected to the mounting end cover and the cleaning brush 2.

[0009] Furthermore, in order to better assist in heat dissipation of the carbon brush, a protective opening is provided on one side of the end cap. A filter cover is threadedly connected to the inner wall of the protective opening, and a filter screen and a molecular sieve plate are provided on the inner wall of the filter cover.

[0010] Furthermore, in order to better collect the dust from cleaning the carbon brushes and commutator, a dust discharge port is provided on the mounting end cover, a collection frame is fixed on the surface of the mounting end cover, and a collection box is installed on the inner wall of the collection frame, with the collection box and the dust discharge port being positioned opposite each other.

[0011] Furthermore, a wire is provided on one side of the carbon brush, and a spring washer is provided at one end of the wire. One end of the spring washer is provided on one side of the inner wall of the auxiliary seat, and a spring is provided on one side of the carbon brush and one side of the spring washer.

[0012] Furthermore, in order to better improve the sealing between the mounting end cap and the fixed seat, a sealing gasket is provided at the junction of the mounting end cap and the fixed seat, and the sealing gasket is compatible with the mounting end cap and the fixed seat.

[0013] Furthermore, in order to better install and fix the series motor, multiple mounting plates are fixed on the surface of the housing, and multiple mounting holes are opened on the mounting plates.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) By using the mounting components in the housing, the carbon brushes can be replaced without the need for a long time of disassembly and assembly using multiple tools. This greatly reduces the time and labor costs required for replacing carbon brushes, reduces production downtime or equipment idle time caused by carbon brush replacement, and improves the flexibility and timeliness of equipment maintenance. At the same time, the auxiliary components in the mounting end cover not only facilitate the quick disassembly and replacement of carbon brushes, but also enable real-time cleaning of the carbon brushes and commutator surfaces. This effectively removes powder and other impurities adhering to their surfaces, ensuring good contact between the carbon brushes and the commutator, maintaining stable conductivity, and flexibly cleaning the commutator surface. This reduces the risk of poor conductivity, motor performance degradation, or even damage caused by the accumulation of impurities, and improves the stability and safety of motor operation.

[0016] (2) The filter cover, filter screen, and molecular sieve plate installed on the mounting end cover can effectively block large particles such as dust and impurities and moisture from entering the motor. This can prevent these impurities from adhering to the carbon brush or commutator surface and prevent short circuits and corrosion inside the motor caused by high humidity, which would affect the conductivity and normal operation of the motor. At the same time, the collection frame and collection box installed on the mounting end cover can effectively collect the carbon brush powder, preventing the powder from accumulating inside the motor and avoiding problems such as poor heat dissipation, decreased conductivity, and damage to precision components inside the motor caused by powder accumulation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a series motor with easily replaceable carbon brushes according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the mounting assembly structure of a series motor with easy carbon brush replacement according to an embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of a partial structure of an auxiliary component of a series-wound motor that facilitates carbon brush replacement, according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 4 This is a schematic diagram of a partial structure of an auxiliary component of a series-wound motor that facilitates carbon brush replacement, according to an embodiment of the present invention. Figure 2 ;

[0022] Figure 5 This is a schematic diagram of a cleaning brush structure for a series-wound motor that facilitates carbon brush replacement, according to an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Housing; 2. Mounting assembly; 201. Fixing base; 202. Spring-loaded telescopic rod; 203. Limiting block; 204. Mounting end cap; 3. Auxiliary assembly; 301. Auxiliary base; 302. Limiting plate; 303. Carbon brush; 304. Cleaning brush one; 305. Auxiliary rod; 306. Cleaning brush two; 307. Auxiliary spring; 4. Filter cover; 5. Filter screen plate; 6. Molecular sieve plate; 7. Collection frame; 8. Collection box; 9. Wire; 10. Spring washer; 11. Spring; 12. Sealing gasket; 13. Mounting plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1:

[0027] like Figures 1-5 As shown, a series-wound motor with easily replaceable carbon brushes according to an embodiment of the present invention includes a housing 1. The inner wall of the housing 1 is provided with a shaft (not shown in the figure) during actual use. A rotor, stator, fan, bearing, and commutator (not shown in the figure) are sequentially arranged on the surface of the shaft. The sequential arrangement of the rotor, stator, fan, bearing, and commutator on the surface of the shaft is prior art and will not be described in detail. One end of the housing 1 is provided with a mounting assembly 2. The mounting assembly 2 includes a fixing seat 201 fixedly disposed at one end of the housing 1. The inner wall of the fixing seat 201 has openings such as... The distance distribution is limited by holes, and a spring-loaded telescopic rod 202 is fixed to the inner wall of the limited holes. The spring-loaded telescopic rod 202 consists of a telescopic rod one (small diameter), a telescopic rod two (large diameter), and a spring. One end of the telescopic rod one is nested and connected to the inner wall of the telescopic rod two through a sealing block or sealing gasket. The spring is fitted on the outside of the telescopic rod one and the telescopic rod two. A limiting block 203 is fixed to one end of the spring-loaded telescopic rod 202. One end of the limiting block 203 contacts the mounting end cap 204. One end of the mounting end cap 204 is engaged with the inner wall of the fixing seat 201.

[0028] A protective opening is provided on one side of the mounting end cover 204. A filter cover 4 is threadedly connected to the inner wall of the protective opening. A filter screen plate 5 and a molecular sieve plate 6 are provided on the inner wall of the filter cover 4. The molecular sieve plate 6 is made of high-temperature resistant ceramic molecular sieve or other materials. A sealing gasket 12 is provided at the junction of the mounting end cover 204 and the fixing seat 201. The sealing gasket 12 is compatible with the mounting end cover 204 and the fixing seat 201. Two mounting plates 13 are fixed on the surface of the housing 1 for horizontal mounting and fixing of the housing 1 of the series-wound motor. Two mounting holes are provided on the mounting plates 13 for installing fixing screws to fix the mounting plates 13.

[0029] Example 2:

[0030] like Figures 1-5 As shown, according to an embodiment of the present utility model, a series-wound motor that facilitates carbon brush replacement is provided with an auxiliary component 3 on the inner wall of the mounting end cover 204. The auxiliary component 3 includes two auxiliary seats 301 fixedly disposed on the inner wall of the mounting end cover 204. A guide groove is provided on the auxiliary seat 301, and a limiting plate 302 is provided on the inner wall of the guide groove. One side of the limiting plate 302 is engaged with the inner wall of the auxiliary seat 301.

[0031] A carbon brush 303 is provided on one side of the limiting plate 302 and the inner wall of the auxiliary seat 301. A cleaning brush 304 is in contact with the surface of the carbon brush 303 for cleaning the powder adhering to the surface of the carbon brush 303. One side of the cleaning brush 304 is fixed to the inner wall of the auxiliary seat 301 and one side of the limiting plate 302 respectively. An auxiliary rod 305 passes through the mounting end cover 204. A cleaning brush 306 is fixed to one end of the auxiliary rod 305 for cleaning the powder adhering to the commutator surface in contact with the carbon brush 303. An auxiliary spring 307 is sleeved on the surface of the auxiliary rod 305. The two ends of the auxiliary spring 307 are connected to the mounting end cover 204 and the cleaning brush 306.

[0032] The mounting end cap 204 has a chip discharge port. A collection frame 7 is fixed on the surface of the mounting end cap 204. A collection box 8 is installed on the inner wall of the collection frame 7 for collecting carbon brush 303 powder. The collection box 8 is positioned opposite to the chip discharge port. A wire 9 is provided on one side of the carbon brush 303. A spring washer 10 is provided at one end of the wire 9. One end of the spring washer 10 is provided on one side of the inner wall of the auxiliary seat 301. A spring 11 is provided on one side of the carbon brush 303 and one side of the spring washer 10.

[0033] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0034] In summary, with the help of the above-mentioned technical solution of this utility model, the series motor can be fixed by the mounting plate 13 and bolts during installation, ensuring the stability of the series motor operation. When the carbon brush 303 needs to be replaced, the worker pulls the mounting end cover 204 outward, and the spring-loaded telescopic rod 202 and the limiting block 203 set in the fixing seat 201 are pressed and retracted into the limiting hole of the fixing seat 201. At the same time, the mounting end cover 204 and the fixing seat 201 are released from the snap-fit. At the same time, the worker pulls the auxiliary rod 305 so that the cleaning brush 306 set in the auxiliary rod 305 is no longer in contact with the commutator, and the mounting end cover 204 can be quickly removed.

[0035] After removal, the staff will pull the limiting plate 302 out of the snap-fit ​​joint and guide groove of the auxiliary seat 301. The carbon brush 303 can be removed from the auxiliary seat 301 and the cleaning brush 304 for replacement. After replacement, the staff will place the new carbon brush 303 into the auxiliary seat 301 and the cleaning brush 304, and then press the limiting plate 302 through the guide groove so that one end of the limiting plate 302 is snapped into the snap-fit ​​joint of the auxiliary seat 301. After replacement, the installation end cover 204 will be aligned with the fixing seat 201.

[0036] At the same time, the staff pulls the auxiliary rod 305 so that the cleaning brush 306 set on the auxiliary rod 305 does not affect the installation effect. Meanwhile, the spring-loaded telescopic rod 202 set on the fixed base 201 drives the limiting block 203 to automatically reset to the limiting position of the mounting end cover 204 and lock it. One end of the mounting end cover 204 is locked with the inner wall of the fixed base 201. After locking, the staff releases the auxiliary rod 305 so that the cleaning brush 306 set on the auxiliary rod 305 contacts the commutator.

[0037] When the series-wound motor is in use, the cleaning brush 304 on the auxiliary seat 301 contacts the surface of the carbon brush 303. The cleaning brush 304 automatically scrapes off the powder adhering to the surface of the carbon brush 303. At the same time, the cleaning brush 306 at the end of the auxiliary rod 305 is elastically pressed against the commutator surface by the auxiliary spring 307, which removes impurities on the commutator in real time and ensures stable conductivity. The filter cover 4 installed in the protective opening of the mounting end cover 204, as well as the filter screen plate 5 and molecular sieve plate 6 inside the filter cover 4, can block large dust particles from entering the motor and adsorb moisture and small particles to prevent short circuits and corrosion. The chip discharge port of the mounting end cover 204, the collection frame 7, and the collection box 8 allow the carbon powder scraped by the cleaning brush 304 and the cleaning brush 306 to fall into the collection box 8 through the chip discharge port, avoiding powder accumulation that affects heat dissipation and conductivity. A sealing gasket 12 is provided between the mounting end cover 204 and the fixed seat 201 to prevent external contaminants from entering and to enhance waterproofing.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A series-wound motor with easily replaceable carbon brushes, characterized in that, The device includes a housing (1), and a mounting assembly (2) is provided at one end of the housing (1). The mounting assembly (2) includes a fixing seat (201) fixedly disposed at one end of the housing (1). The inner wall of the fixing seat (201) is provided with equally spaced limiting holes. A spring-loaded telescopic rod (202) is fixed to the inner wall of the limiting holes. A limiting block (203) is fixed to one end of the spring-loaded telescopic rod (202). One end of the limiting block (203) contacts a mounting end cap (204). One end of the mounting end cap (204) is engaged with the inner wall of the fixing seat (201).

2. A series-wound motor with easily replaceable carbon brushes according to claim 1, characterized in that, An auxiliary component (3) is provided on the inner wall of the mounting end cap (204). The auxiliary component (3) includes multiple auxiliary seats (301) fixedly disposed on the inner wall of the mounting end cap (204). A guide groove is provided on the auxiliary seat (301), and a limiting plate (302) is provided on the inner wall of the guide groove. One side of the limiting plate (302) is engaged with the inner wall of the auxiliary seat (301). A carbon brush (303) is provided on one side of the limiting plate (302) and the inner wall of the auxiliary seat (301). A cleaning brush (304) is in contact with the surface. One side of the cleaning brush (304) is fixed to the inner wall of the auxiliary seat (301) and the side of the limiting plate (302). An auxiliary rod (305) passes through the mounting end cover (204). A cleaning brush (306) is fixed to one end of the auxiliary rod (305). An auxiliary spring (307) is sleeved on the surface of the auxiliary rod (305). The two ends of the auxiliary spring (307) are connected to the mounting end cover (204) and the cleaning brush (306).

3. A series-wound motor with easily replaceable carbon brushes according to claim 2, characterized in that, A protective opening is provided on one side of the end cap (204), and a filter cover (4) is threadedly connected to the inner wall of the protective opening. The inner wall of the filter cover (4) is provided with a filter screen plate (5) and a molecular sieve plate (6).

4. A series-wound motor with easily replaceable carbon brushes according to claim 3, characterized in that, The mounting end cap (204) has a chip discharge port, and a collection frame (7) is fixed on the surface of the mounting end cap (204). A collection box (8) is installed on the inner wall of the collection frame (7), and the collection box (8) is opposite to the chip discharge port.

5. A series-wound motor with easily replaceable carbon brushes according to claim 4, characterized in that, A wire (9) is provided on one side of the carbon brush (303), and a spring washer (10) is provided at one end of the wire (9). One end of the spring washer (10) is provided on one side of the inner wall of the auxiliary seat (301), and a spring (11) is provided on one side of the carbon brush (303) and one side of the spring washer (10).

6. A series-wound motor with easily replaceable carbon brushes according to claim 5, characterized in that, A sealing gasket (12) is provided at the junction of the mounting end cap (204) and the fixing seat (201), and the sealing gasket (12) is compatible with the mounting end cap (204) and the fixing seat (201).

7. A series-wound motor with easily replaceable carbon brushes according to claim 6, characterized in that, Multiple mounting plates (13) are fixed on the surface of the housing (1), and multiple mounting holes are provided on the mounting plates (13).

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