Conductive brush for current protection conductive device

Abstract

The present invention provides a conductive brush for a current protection conductive device, which relates to the field of conductive brushes and comprises: a micro motor housing, a permanent magnet, an armature winding, a conductive positioning seat, a conductive mounting seat, a carbon conductive block and a buzzer alarm; the permanent magnet is placed on the left and right sides of the micro motor housing; the armature winding is rotatably connected to the middle of the micro motor housing; the conductive positioning seat is bolted to the left and right sides of the micro motor housing; the conductive mounting seat is arranged on the front and rear sides of the conductive positioning seat; the carbon conductive block is bonded to the inner side of the conductive mounting seat; the buzzer alarm is bolted to the front side of the conductive positioning seat; the present invention improves the use effect of the conductive brush, can remind staff to replace the worn conductive brush in time, avoids the inconvenience of frequently checking the conductive brush, saves a lot of time, and solves the problem that it takes a long time to regularly check the conductive brush.

Description

Technical Field

[0001] The invention relates to the technical field of conductive brushes, in particular to a conductive brush for a current protection conductive device. Background Art

[0002] When the micro motor is running, common mode current and differential mode current will be generated. In order to reduce and suppress the shaft current, a conductive device needs to be installed on the back cover of the micro motor. The conductive device is mostly composed of a mounting seat, a conductive brush, a spring, etc. When the armature winding rotates, the conductive brush will continuously rub against the commutator, so that the shaft current is released through the conductive bypass, ensuring the continuous transmission of current and the commutation of the motor. The conductive brush will gradually wear during use, so it needs regular inspection and maintenance. When the brush is severely worn or affects the normal operation of the motor, it should be replaced with a new brush in time.

[0003] For example, CN113949221A discloses a conductive brush for a conductive device of a motor shaft current protection structure, comprising a fixed seat, a pressure plate and conductive fibers, the fixed seat comprising a fixed plate, a star-shaped column and a pressure column, one side of the star-shaped column and the pressure column are fixed to the fixed plate, and the pressure column is located in a star-shaped groove of the star-shaped column, an installation space is left between the pressure column and the star-shaped groove, the length of the pressure column is greater than the length of the star column, the middle of the conductive fiber is located in the star-shaped groove, and both ends of the conductive fiber extend from the star-shaped groove, a forming hole for the pressure column to pass through is opened on the pressure plate, the front end of the pressure column passes through the forming hole and then is riveted to fix the pressure plate, an assembly hole is provided in the center of the fixed seat and the pressure plate, the structural strength of the present invention is high, the conductive fiber is firmly fixed, and it works stably after being installed on the conductor, and no additional fixings are required.

[0004] However, when inspecting the conductive brush, it is necessary to first disassemble the casing of the micro motor, and then take out all the armature windings and the conductive brushes before inspecting the conductive brush. This operation is inconvenient, and regular inspection of the conductive brushes will cause a heavy labor burden on the staff and take a long time, which affects the use effect of the conductive brush. Summary of the invention

[0005] In view of this, the present invention provides a conductive brush for a current protection conductive device. The present invention can automatically pop out the front carbon conductive block through the deformation of the limiting airbag, thereby ensuring the normal use of the micro motor and improving the use effect of the conductive brush. After the carbon conductive blocks on the front and rear sides are severely worn, the buzzer alarm will start to sound an alarm, reminding the staff to replace the conductive brush in time, effectively avoiding the inconvenience of frequent inspection of the conductive brush, reducing the labor burden of the staff, saving a lot of time, and also reducing the downtime of the micro motor, effectively improving the working efficiency of the micro motor.

[0006] The present invention provides a purpose and function of a conductive brush for a current protection conductive device, which specifically includes: a micro motor housing, a permanent magnet, an armature winding, a conductive positioning seat, a collecting structure, a conductive mounting seat, a limiting structure, a carbon conductive block and a buzzer alarm; two permanent magnets are provided, and the two permanent magnets are respectively placed on the left and right sides of the micro motor housing; the armature winding is rotatably connected to the middle of the micro motor housing; two conductive positioning seats are provided, and the two conductive positioning seats are respectively bolted to the left and right sides of the micro motor housing; the collecting structure is provided at the lower part of the conductive positioning seat; four conductive mounting seats are provided, and the four conductive mounting seats are respectively provided on the front and rear sides of the two conductive positioning seats; the limiting structure is provided on the inner side of the conductive positioning seat; four carbon conductive blocks are provided, and the four carbon conductive blocks are respectively bonded to the inner side surfaces of the four conductive mounting seats, and grooves are provided on the outer sides of the two rear carbon conductive blocks; two buzzer alarms are provided, and the two buzzer alarms are respectively bolted to the front sides of the two conductive positioning seats.

[0007] Furthermore, the limiting structure includes a limiting connecting plate and a guiding connecting plate; eight limiting connecting plates are provided, and the eight limiting connecting plates are evenly distributed and fixedly connected to the front and rear sides of the two conductive positioning seats; eight guiding connecting plates are provided, and the eight guiding connecting plates are respectively fixedly connected to the upper and lower sides of the four conductive mounting seats, and the eight guiding connecting plates are respectively slidably connected to the eight limiting connecting plates.

[0008] Furthermore, the limiting structure also includes an auxiliary elastic part and a clamping elastic part; there are multiple auxiliary elastic parts, and the eight limiting connecting plates are elastically connected to the eight guide connecting plates through multiple auxiliary elastic parts; there are four clamping elastic parts, and the four conductive mounting seats are elastically connected to the two conductive positioning seats through the four clamping elastic parts respectively.

[0009] Furthermore, the limiting structure also includes a position limiting rod and a metal contact piece; two position limiting rods are provided, and the two position limiting rods are respectively fixedly connected to the inner sides of the four front guide connecting plates; two metal contact pieces are provided, and the two metal contact pieces are respectively fixedly connected to the front end surfaces of the two front carbon conductive blocks.

[0010] Furthermore, the limiting structure also includes a limiting mounting plate and a metal contact point; two limiting mounting plates are provided, and the two limiting mounting plates are respectively fixedly connected to the front sides of the two conductive positioning seats; two metal contact points are provided, and the two metal contact points are respectively fixedly connected to the inner sides of the two limiting mounting plates.

[0011] Furthermore, the limiting structure also includes a limiting airbag and a gas connecting tube; two limiting airbags are provided, and the two limiting airbags are respectively bonded to the inner sides of the two conductive positioning seats, and a one-way valve is provided on the upper parts of the two limiting airbags; two gas connecting tubes are provided, and the two gas connecting tubes are respectively fixedly connected to the rear sides of the two limiting airbags, and the two gas connecting tubes are respectively fixedly connected to the two conductive mounting seats at the rear, and the two gas connecting tubes are respectively connected to the grooves of the two carbon conductive blocks at the rear.

[0012] Furthermore, the collection structure includes a positioning connecting rope and a limiting counterweight ball; a plurality of the positioning connecting ropes are provided, and a circular array of the plurality of the positioning connecting ropes is fixedly connected to the rear side of the armature winding; a plurality of the limiting counterweight balls are provided, and the plurality of the limiting counterweight balls are respectively fixedly connected to the middle parts of the plurality of the positioning connecting ropes.

[0013] Furthermore, the collection structure also includes a powder collection box and a box body sealing cover; the powder collection box is bolted to the lower end surfaces of the two conductive positioning seats; the box body sealing cover is slidably connected to the upper part of the powder collection box.

[0014] Furthermore, the collection structure also includes an arc-shaped limiting boss and a damping elastic member; a plurality of the arc-shaped limiting bosses are provided, and the plurality of the arc-shaped limiting bosses are evenly distributed and fixedly connected to the rear side of the box body sealing cover; a plurality of the damping elastic members are provided, and the box body sealing cover is elastically connected to the powder collection box through the plurality of the damping elastic members.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention uniformly collects the powder generated when the conductive brush is worn through a powder collection box, thereby avoiding the situation where the powder covers the armature winding or the outside of the permanent magnet; when the micromotor stops working, the powder collection box is sealed through the box body sealing cover, thereby avoiding the situation where the collected powder falls out again, thereby ensuring the powder collection effect; after the carbon conductive block on the rear side is severely worn, the gas in the limiting airbag will be discharged from the groove where the carbon conductive block is worn through, and at this time, the front carbon conductive block is automatically popped out through the deformation of the limiting airbag, thereby ensuring the normal use of the micromotor and improving the use effect of the conductive brush; after the carbon conductive blocks on both the front and rear sides are severely worn, the buzzer alarm will start to sound an alarm, reminding the staff to replace the conductive brush in time, thereby effectively avoiding the inconvenience of frequent inspection of the conductive brush, reducing the labor burden of the staff, saving a lot of time, and also reducing the downtime of the micromotor, thereby effectively improving the working efficiency of the micromotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0017] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0018] In the attached picture:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the position of the armature winding of the present invention.

[0021] Figure 3 It is a schematic diagram of the positional relationship between the armature winding and the conductive positioning seat of the present invention.

[0022] Figure 4 The present invention Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.

[0023] Figure 5 It is a schematic diagram of the positional relationship among the conductive positioning seat, the conductive mounting seat and the carbon conductive block of the present invention.

[0024] Figure 6 It is a schematic diagram of the disassembled structure of the powder collecting box and the box body sealing cover of the present invention.

[0025] Figure 7 It is a schematic diagram of the positional relationship among the limiting airbag, the gas connecting tube and the conductive mounting seat of the present invention.

[0026] Figure 8 It is a schematic diagram of the position of the metal contact piece of the present invention.

[0027] Fig. 9 It is a schematic diagram of the positional relationship between the conductive positioning seat and the buzzer alarm of the present invention.

[0028] In the figure: 1. micro motor housing; 2. permanent magnet; 3. armature winding; 301. positioning connecting rope; 302. limiting counterweight ball; 4. conductive positioning seat; 401. limiting connecting plate; 402. auxiliary elastic member; 403. limiting mounting plate; 404. metal contact point; 405. limiting airbag; 406. gas connecting pipe; 407. powder collection box; 408. box sealing cover; 409. arc-shaped limiting boss; 410. damping elastic member; 5. conductive mounting seat; 501. guide connecting plate; 502. pressing elastic member; 503. position limiting rod; 6. carbon conductive block; 601. metal contact piece; 7. buzzer alarm. DETAILED DESCRIPTION

[0029] Example 1: Please refer to Figures 1 to 6 As shown:

[0030] The present invention provides a conductive brush for a current protection conductive device, comprising a micro motor housing 1, a permanent magnet 2, an armature winding 3, a conductive positioning seat 4 and a collecting structure; two permanent magnets 2 are provided, and the two permanent magnets 2 are respectively placed on the left and right sides of the micro motor housing 1; the armature winding 3 is rotatably connected to the middle of the micro motor housing 1; two conductive positioning seats 4 are provided, and the two conductive positioning seats 4 are respectively bolted to the left and right sides of the micro motor housing 1; the collecting structure is arranged at the lower part of the conductive positioning seat 4.

[0031] Among them, the collection structure includes a positioning connecting rope 301 and a limiting counterweight ball 302; a plurality of positioning connecting ropes 301 are provided, and a circular array of the plurality of positioning connecting ropes 301 is fixedly connected to the rear side of the armature winding 3; a plurality of limiting counterweight balls 302 are provided, and the plurality of limiting counterweight balls 302 are respectively fixedly connected to the middle parts of the plurality of positioning connecting ropes 301.

[0032] The collecting structure further includes a powder collecting box 407 and a box sealing cover 408 ; the powder collecting box 407 is bolted to the lower end surfaces of the two conductive positioning seats 4 ; the box sealing cover 408 is slidably connected to the upper part of the powder collecting box 407 .

[0033] Among them, the collection structure also includes an arc-shaped limiting boss 409 and a damping elastic member 410; a plurality of arc-shaped limiting bosses 409 are provided, and the plurality of arc-shaped limiting bosses 409 are evenly distributed and fixedly connected to the rear side of the box body sealing cover 408; a plurality of damping elastic members 410 are provided, and the box body sealing cover 408 is elastically connected to the powder collection box 407 through the plurality of damping elastic members 410.

[0034] Specific usage and function of this embodiment: when the armature winding 3 rotates inside the permanent magnet 2, the limiting counterweight ball 302 will be affected by the centrifugal force and pull the positioning connecting rope 301, causing the positioning connecting rope 301 to deform. At this time, the limiting counterweight ball 302 will contact the arc-shaped limiting boss 409, causing the arc-shaped limiting boss 409 to slide along the powder collection box 407 with the box body sealing cover 408 under the action of friction, so that the powder collection box 407 is opened. At this time, the powder generated by the wear of the conductive brush will fall into the powder collection box 407. When the armature winding 3 stops rotating, the limiting counterweight ball 302 is no longer affected by the centrifugal force. At this time, the damping elastic member 410 will drive the box body sealing cover 408 to slowly reset, thereby sealing the powder collection box 407.

[0035] Example 2: Please refer to Figures 3 to 9 As shown:

[0036] On the basis of the first embodiment, it also includes a conductive mounting seat 5, a limiting structure, a carbon conductive block 6 and a buzzer alarm 7; four conductive mounting seats 5 are provided, and the four conductive mounting seats 5 are respectively provided on the front and rear sides of the two conductive positioning seats 4; the limiting structure is provided on the inner side of the conductive positioning seat 4; four carbon conductive blocks 6 are provided, and the four carbon conductive blocks 6 are respectively bonded to the inner side surfaces of the four conductive mounting seats 5, and grooves are provided on the outer sides of the two rear carbon conductive blocks 6; two buzzer alarms 7 are provided, and the two buzzer alarms 7 are respectively bolted to the front sides of the two conductive positioning seats 4.

[0037] Among them, the limiting structure includes a limiting connecting plate 401 and a guiding connecting plate 501; eight limiting connecting plates 401 are provided, and the eight limiting connecting plates 401 are evenly distributed and fixedly connected to the front and rear sides of the two conductive positioning seats 4; eight guiding connecting plates 501 are provided, and the eight guiding connecting plates 501 are respectively fixedly connected to the upper and lower sides of the four conductive mounting seats 5, and the eight guiding connecting plates 501 are respectively slidably connected to the eight limiting connecting plates 401.

[0038] Among them, the limiting structure also includes an auxiliary elastic member 402 and a clamping elastic member 502; there are multiple auxiliary elastic members 402, and eight limiting connecting plates 401 are elastically connected to eight guide connecting plates 501 through multiple auxiliary elastic members 402; there are four clamping elastic members 502, and four conductive mounting seats 5 are elastically connected to two conductive positioning seats 4 through four clamping elastic members 502 respectively.

[0039] Among them, the limiting structure also includes a position limiting rod 503 and a metal contact piece 601; there are two position limiting rods 503, and the two position limiting rods 503 are respectively fixedly connected to the inner sides of the four front guide connecting plates 501; there are two metal contact pieces 601, and the two metal contact pieces 601 are respectively fixedly connected to the front end surfaces of the two front carbon conductive blocks 6.

[0040] Among them, the limiting structure also includes a limiting mounting plate 403 and a metal contact point 404; two limiting mounting plates 403 are provided, and the two limiting mounting plates 403 are respectively fixedly connected to the front sides of the two conductive positioning seats 4; two metal contact points 404 are provided, and the two metal contact points 404 are respectively fixedly connected to the inner sides of the two limiting mounting plates 403.

[0041] Among them, the limiting structure also includes a limiting airbag 405 and a gas connecting tube 406; there are two limiting airbags 405, which are respectively bonded to the inner sides of the two conductive positioning seats 4, and a one-way valve is arranged on the upper part of the two limiting airbags 405; there are two gas connecting tubes 406, which are respectively fixedly connected to the rear sides of the two limiting airbags 405, and the two gas connecting tubes 406 are respectively fixedly connected to the two conductive mounting seats 5 at the rear, and the two gas connecting tubes 406 are respectively connected to the grooves of the two carbon conductive blocks 6 at the rear.

[0042] The specific usage and function of this embodiment are as follows: the limiting airbag 405 is inflated through the one-way valve, and the gas connecting tube 406 will transport the gas to the groove of the carbon conductive block 6. After the limiting airbag 405 is filled, it will expand to limit the position limiting rod 503, so that the front carbon conductive block 6 is close to the conductive positioning seat 4, and then the conductive positioning seat 4 and the armature winding 3 are installed in the micro motor housing 1. At this time, the clamping elastic member 502 and the auxiliary elastic member 402 on the rear side will continue to apply pressure to the conductive mounting seat 5, so that the rear carbon conductive block 6 is in contact with the rotating shaft of the armature winding 3, and the limiting connecting plate 401 and the guide connecting plate 501 will The movement of the carbon conductive block 6 is guided. When the carbon conductive block 6 on the rear side is worn to a certain extent, the groove will be connected to the outside world. At this time, the air in the limiting airbag 405 will leak out, so that the limiting airbag 405 will no longer contact the position limiting rod 503. At this time, the front clamping elastic member 502 and the auxiliary elastic member 402 push the front carbon conductive block 6 to fit the rotating shaft of the armature winding 3. After the carbon conductive block 6 on the front side is worn to a certain extent, the metal contact piece 601 will contact the metal contact point 404 on the inner side of the limiting mounting plate 403. At this time, the control circuit of the buzzer alarm 7 is connected to sound an alarm, reminding the staff to replace the conductive brush.

[0043] In this article, there are a few points to note:

[0044] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0045] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0046] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A conductive brush for a current protection conductive device, comprising: A micro motor housing (1), a permanent magnet (2), an armature winding (3), a conductive positioning seat (4), a collecting structure, a conductive mounting seat (5), a limiting structure, a carbon conductive block (6) and a buzzer alarm (7); two permanent magnets (2) are provided, and the two permanent magnets (2) are respectively placed on the left and right sides of the micro motor housing (1); the armature winding (3) is rotatably connected to the middle of the micro motor housing (1); it is characterized in that two conductive positioning seats (4) are provided, and the two conductive positioning seats (4) are respectively bolted to the left and right sides of the micro motor housing (1); the collecting structure is provided The lower part of the conductive positioning seat (4); four conductive mounting seats (5) are provided, and the four conductive mounting seats (5) are respectively provided on the front and rear sides of the two conductive positioning seats (4); the limiting structure is provided on the inner side of the conductive positioning seat (4); four carbon conductive blocks (6) are provided, and the four carbon conductive blocks (6) are respectively bonded to the inner side surfaces of the four conductive mounting seats (5), and grooves are provided on the outer sides of the two rear carbon conductive blocks (6); two buzzer alarms (7) are provided, and the two buzzer alarms (7) are respectively bolted to the front sides of the two conductive positioning seats (4).

2. A conductive brush for a current protection conductive device as claimed in claim 1, characterized in that: The collecting structure comprises a positioning connection rope (301) and a position-limiting counterweight ball (302); a plurality of the positioning connection ropes (301) are provided, and the plurality of the positioning connection ropes (301) are fixedly connected in a circular array to the rear side of the armature winding (3); a plurality of the position-limiting counterweight balls (302) are provided, and the plurality of the position-limiting counterweight balls (302) are respectively fixedly connected to the middle of the plurality of the positioning connection ropes (301).

3. A conductive brush for a current protection conductive device as claimed in claim 2, characterized in that: The collecting structure further comprises a powder collecting box (407) and a box body sealing cover (408); the powder collecting box (407) is bolted to the lower end surfaces of the two conductive positioning seats (4); and the box body sealing cover (408) is slidably connected to the upper part of the powder collecting box (407) left and right.

4. A conductive brush for a current protection conductive device as claimed in claim 3, characterized in that: The collecting structure further comprises an arc-shaped limiting boss (409) and a damping elastic member (410); a plurality of the arc-shaped limiting bosses (409) are provided, and the plurality of the arc-shaped limiting bosses (409) are evenly distributed and fixedly connected to the rear side of the box body sealing cover (408); a plurality of the damping elastic members (410) are provided, and the box body sealing cover (408) is elastically connected to the powder collecting box (407) via the plurality of the damping elastic members (410).

5. A conductive brush for a current protection conductive device as claimed in claim 4, characterized in that: The limiting structure comprises a limiting connection plate (401) and a guiding connection plate (501); eight limiting connection plates (401) are provided, and the eight limiting connection plates (401) are evenly distributed and fixedly connected to the front and rear sides of the two conductive positioning seats (4); eight guiding connection plates (501) are provided, and the eight guiding connection plates (501) are respectively fixedly connected to the upper and lower sides of the four conductive mounting seats (5), and the eight guiding connection plates (501) are respectively slidably connected to the eight limiting connection plates (401).

6. A conductive brush for a current protection conductive device as claimed in claim 5, characterized in that: The limiting structure also includes an auxiliary elastic member (402) and a clamping elastic member (502); a plurality of the auxiliary elastic members (402) are provided, and the eight limiting connecting plates (401) are elastically connected to the eight guiding connecting plates (501) via the plurality of the auxiliary elastic members (402); four clamping elastic members (502) are provided, and the four conductive mounting seats (5) are elastically connected to the two conductive positioning seats (4) respectively via the four clamping elastic members (502).

7. A conductive brush for a current protection conductive device as claimed in claim 6, characterized in that: The position limiting structure further comprises a position limiting rod (503) and a metal contact sheet (601); two position limiting rods (503) are provided, and the two position limiting rods (503) are respectively fixedly connected to the inner sides of the four front guide connecting plates (501); two metal contact sheets (601) are provided, and the two metal contact sheets (601) are respectively fixedly connected to the front end surfaces of the two front carbon conductive blocks (6).

8. A conductive brush for a current protection conductive device as claimed in claim 7, characterized in that: The limiting structure further comprises a limiting mounting plate (403) and a metal contact point (404); two limiting mounting plates (403) are provided, and the two limiting mounting plates (403) are respectively fixedly connected to the front sides of the two conductive positioning seats (4); two metal contact points (404) are provided, and the two metal contact points (404) are respectively fixedly connected to the inner sides of the two limiting mounting plates (403).

9. A conductive brush for a current protection conductive device as claimed in claim 8, characterized in that: The limiting structure further comprises a limiting airbag (405) and a gas connecting tube (406); two limiting airbags (405) are provided, and the two limiting airbags (405) are respectively bonded to the inner sides of the two conductive positioning seats (4); a one-way valve is provided on the upper parts of the two limiting airbags (405); two gas connecting tubes (406) are provided, and the two gas connecting tubes (406) are respectively fixedly connected to the rear sides of the two limiting airbags (405); the two gas connecting tubes (406) are respectively fixedly connected to the two conductive mounting seats (5) at the rear; and the two gas connecting tubes (406) are respectively connected to the grooves of the two carbon conductive blocks (6) at the rear.

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