CN214798128U

CN214798128U - Carbon brush assembly and carbon brush row

Info

Publication number: CN214798128U
Application number: CN202121025472.4U
Authority: CN
Inventors: 李小勇; 陈巨本; 林丰; 林雨泽; 陈子涵
Original assignee: Zhejiang Yading Electric Co ltd
Current assignee: Zhejiang Yading Electric Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-11-19
Anticipated expiration: 2031-05-13

Abstract

The utility model relates to a carbon brush technical field refers in particular to a carbon brush subassembly and carbon brush row. A carbon brush assembly, comprising: a connecting seat; two carbon brush arms, the upper end parts of which are hinged on two sides of the connecting seat; the spring is arranged between the two carbon brush arms, and the end parts of the spring are respectively connected to the carbon brush arms; the carbon brush is arranged at the lower end of the carbon brush arm and is connected with the connecting seat through the conductive piece; the lower extreme shaping of carbon brush arm has the rotation chamber, and the inner wall that rotates the chamber is provided with joint portion one, is provided with the joint portion two of cooperation joint portion one on the lateral wall of carbon brush, realizes that the carbon brush is connected with the rotation that rotates the chamber. The utility model discloses a shaping rotation chamber on carbon brush arm, with carbon brush activity joint in rotating the intracavity, make the carbon brush rotate rotating the intracavity, solve the relative carbon brush arm rotation of carbon brush for the carbon brush can not closely cooperate the collecting ring, influences the performance of motor and the problem of life-span.

Description

Carbon brush assembly and carbon brush row

Technical Field

The utility model relates to a carbon brush technical field refers in particular to a carbon brush subassembly and carbon brush row.

Background

The carbon brush holder is used for applying pressure to the carbon brush which is in sliding contact with the surface of the commutator or the collecting ring through the spring so as to enable the carbon brush holder to stably conduct current between the fixed body and the rotating body.

For example, chinese patent 2020208833599 discloses a carbon brush holder unit and a carbon brush row including the carbon brush holder unit. Wherein, the carbon brush is fixedly connected on the brush box. In the in-service use process, after the carbon brush assembly and the collecting ring are installed and fixed, the center distance of the carbon brush and the center distance of the collecting ring are different, so that the carbon brush cannot be tightly matched with the collecting ring, the condition of unstable conductive transmission is caused, and the performance and the service life of the motor are influenced.

Disclosure of Invention

The utility model aims at providing a carbon brush subassembly and carbon brush row rotates the chamber through the shaping on carbon brush arm, with carbon brush activity joint in rotating the intracavity, make the carbon brush can rotate rotating the intracavity, solve the relative carbon brush arm rotation of carbon brush for the carbon brush can not closely cooperate the collecting ring, influences the performance of motor and the problem of life-span.

The purpose of the utility model is realized like this:

a carbon brush assembly, comprising:

a connecting seat;

two carbon brush arms, the upper end parts of which are hinged on two sides of the connecting seat;

the spring is arranged between the two carbon brush arms, and the end parts of the spring are respectively connected to the carbon brush arms;

the carbon brush is arranged at the lower end of the carbon brush arm and is connected with the connecting seat through the conductive piece;

the lower extreme shaping of carbon brush arm has the rotation chamber, and the inner wall that rotates the chamber is provided with joint portion one, is provided with the joint portion two of cooperation joint portion one on the lateral wall of carbon brush, realizes that the carbon brush is connected with the rotation that rotates the chamber.

Preferably, the upper end shaping of carbon brush has the arc convex surface, and the bottom shaping of rotating the chamber has the arc wall, and the arc convex surface is arranged in the arc wall, and the activity of arc convex surface is supported and is pressed in the bottom of arc wall.

Preferably, the lower end of the carbon brush arm is recessed upwards to form a notch, the notch penetrates through the side surface of the rotating cavity, and the end part of the conductive piece is arranged in the notch and connected with the carbon brush.

Preferably, the slot dimension L is smaller than the dimension S of the rotation cavity.

Preferably, the first clamping portion is a first clamping protrusion, the second clamping portion is a first clamping groove, and the first clamping protrusion is clamped in the first clamping groove to achieve installation and fixation of the carbon brush in the rotating cavity.

Preferably, the upper end of the carbon brush arm is recessed downwards to form a slot, connecting shafts are arranged on two sides of the connecting seat and are arranged in the slot, and therefore the carbon brush arm is connected with the connecting seat.

Preferably, the slot comprises a guide part and a rotating part, and the guide part interval F is smaller than the rotating part diameter G.

A carbon brush array, comprising:

the installation axle is provided with a plurality of side by side on this installation axle novel carbon brush subassembly.

Preferably, circumference is provided with the spacing sand grip of a plurality of roots on the outer wall of installation axle, the mounting hole has been seted up on the connecting seat, and the shaping has the spacing groove of the spacing sand grip of cooperation on the inner wall of mounting hole, and the both ends face of spacing groove through the connecting seat, and the installation axle is worn to establish in the mounting hole and fixed through the pin.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. the utility model discloses a change the fixed mode between carbon brush and the carbon brush arm, adopted the carbon brush joint to rotate the intracavity, and can rotate at the rotation intracavity, realized the swing joint between carbon brush and the carbon brush arm, sub-in-service use, through the rotation of carbon brush in the rotation intracavity, make the carbon brush closely cooperate the collecting ring to this guarantees the performance and the life of motor.

2. The utility model discloses a design of arc wall and arc convex surface can guarantee that the carbon brush rotates the back in the rotation intracavity, and the carbon brush can be supported constantly to the arc wall, makes the carbon brush can inseparabler laminating collecting ring, guarantees the motor performance.

3. Offer the slot in the upper end of carbon brush arm, insert the connecting axle in the slot, the slot expands more easily for carbon brush arm connects the connecting seat more easily, and simple to operate is swift.

Drawings

Fig. 1 is a schematic structural view of a carbon brush row of the present invention.

Fig. 2 is a schematic structural view of the carbon brush assembly of the present invention.

Fig. 3 is a schematic structural diagram of the carbon brush arm and the carbon brush of the present invention.

Fig. 4 is a schematic structural diagram of the carbon brush assembly and the collecting ring of the present invention.

Fig. 5 is an exploded view of the carbon brush assembly of the present invention.

Fig. 6 is a cross-sectional view of a carbon brush assembly according to the present invention.

Fig. 7 is a schematic structural diagram of the installation shaft of the present invention.

Reference numerals: 1-a connecting seat; 2-a carbon brush arm; 3-a spring; 4-carbon brush; 5-conducting piece; 6-rotating the cavity; 7-a first clamping part; 8-a second clamping part; 9-an arc convex surface; 10-an arc-shaped groove; 11-notches; 12-a slot; 13-a connecting shaft; 14-a guide; 15-a rotating part; 16-mounting the shaft; 17-limiting convex strips; 18-mounting holes; 19-a limit groove; 20-pins; 21-collector ring.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1, a carbon brush array includes a mounting shaft 16 and carbon brush assemblies, and the carbon brush assemblies are arranged side by side on the mounting shaft 16.

As shown in fig. 2, the carbon brush assembly includes a connecting base 1, two carbon brush arms 2, a spring 3 and a carbon brush 4, wherein a mounting hole 18 is formed in the connecting base 1 for a mounting shaft 16 to pass through; the upper ends of the two carbon brush arms 2 are respectively hinged on two sides of the connecting seat 1; the spring 3 is arranged between the two carbon brush arms 2, and the end part of the spring 3 is connected to the carbon brush arms 2; the carbon brush 4 is arranged at the lower end of the carbon brush arm 2, and the carbon brush 4 is connected with the connecting seat 1 through a conductive piece.

The connection structure between the carbon brush 4 and the carbon brush arm 2 is as follows.

As shown in fig. 3, a rotating cavity 6 is formed at the lower end of the carbon brush arm 2, a first clamping portion 7 is arranged on the inner wall of the rotating cavity 6, and a second clamping portion 8 matched with the first clamping portion 7 is arranged on the side wall of the carbon brush 4, so that the carbon brush 4 is rotatably connected with the rotating cavity 6.

As shown in fig. 4, when the carbon brush assembly is disposed on one side of the collecting ring 21, the lower ends of the two carbon brush arms 2 are close to each other by the pulling force of the spring 3, that is, the carbon brushes 4 have a tendency of closing to each other, the end surfaces of the carbon brushes 4 are attached to the outer wall of the collecting ring 21 under the action of the spring 3, and the carbon brushes 4 can rotate in the rotation cavity 6, so that the deviation of the installation dimension can be compensated, and the end surfaces of the carbon brushes 4 are closely attached to each other by the self-rotation of the carbon brushes 4, thereby avoiding the occurrence of a gap.

The utility model discloses a changed the fixed mode between carbon brush 4 and the carbon brush arm 2, adopted the joint of carbon brush 4 in rotating chamber 6, and can rotate 6 rotations in the rotation chamber, realized the swing joint between carbon brush 4 and the carbon brush arm 2, sub-in-service use, through the rotation of carbon brush 4 in rotating chamber 6, make carbon brush 4 closely cooperate collecting ring 21 to this performance and the life of guaranteeing the motor.

As shown in fig. 5, the first clamping portion 7 and the second clamping portion 8 can have various schemes, for example, the first clamping portion 7 is a first clamping protrusion, and the second clamping portion 8 is a first clamping groove; or the second clamping part 8 is a second clamping bulge, and the first clamping part 7 is a second clamping groove.

In order to further realize the rotation and the fixation of the carbon brush 4 in the rotating cavity 6, the arc convex surface 9 is formed at the upper end of the carbon brush 4, the arc groove 10 is formed at the bottom of the rotating cavity 6, after the carbon brush 4 is clamped in the rotating cavity 6, the arc convex surface 9 is arranged in the arc groove 10 and rotates in the arc groove 10 along with the rotation of the carbon brush 4, and meanwhile, when the carbon brush 4 is attached to the outer surface of the collector ring 21, the arc convex surface 9 is pressed on the bottom surface of the arc groove 10.

Therefore, after the carbon brush 4 rotates in the rotating cavity 6, the arc-shaped groove 10 can support the carbon brush 4 constantly, so that the carbon brush 4 can be attached to the collecting ring 21 more tightly, the condition that the carbon brush 4 is separated from the carbon brush arm 2 due to abrasion after long-time use is avoided, and the performance of the motor is ensured.

In order to facilitate the connection of the conductive member to the carbon brush 4 in the rotation chamber 6, as shown in fig. 5, the lower end of the carbon brush 4 is recessed toward the upper end of the carbon brush arm 2 to form a notch 11, the notch 11 penetrates through the side surface of the rotation chamber 6, and the end of the conductive member may extend into the rotation chamber 6 through the notch 11 to be connected to the carbon brush 4.

The dimension L of said notch 11 is smaller than the dimension S of the rotation chamber 6. Therefore, the carbon brush 4 can only rotate within the range of the rotating cavity 6 in order to ensure the constraint of the rotating cavity 6 on the carbon brush 4, and the condition that the carbon brush assembly cannot normally work due to the fact that the rotating angle is too large is avoided.

The connection structure between the carbon brush arm 2 and the connection holder 1 is as follows.

As shown in fig. 4 and 5, connecting shafts 13 are respectively disposed on two sides of the lower end of the connecting base 1, the upper end surface of the carbon brush arm 2 is recessed downward to form a slot 12, the connecting shafts 13 are inserted into the slots 12 of the carbon brush arm 2, the connecting shafts 13 are clamped in the slots 12, namely, the carbon brush arm 2 is connected to the connecting base 1, and the connected carbon brush arm 2 can rotate on the connecting base 1.

The slot 12 mainly includes a guide portion 14 and a rotating portion 15, the rotating portion 15 is an annular groove, a distance F between the guide portion 14 and the rotating portion 15 is smaller than a diameter G of the rotating portion 15, and the diameter G of the rotating portion 15 is larger than a diameter of the connecting shaft 13 and larger than the distance F between the guide portion 14 and the rotating portion 15. The design is that the rotating part 15 can limit the connecting shaft 13 to prevent the connecting shaft from separating from the rotating part 15, and the carbon brush arm 2 is connected on the connecting seat 1.

When the device is installed, the guide part 14 is forcibly inserted into the outer wall of the connecting shaft 13, the connecting shaft 13 can prop the guide part 14 open, so that the connecting shaft 13 can enter the rotating part 15, and then the guide part 14 returns to the original distance.

Compared with the prior design that the pin shaft penetrates through the connecting seat 1 and the carbon brush arm 2, the carbon brush arm is more convenient to install and can improve the efficiency.

As shown in fig. 6 and 7, in order to achieve the above-mentioned quick and accurate installation of the carbon brush assembly on the installation shaft 16, a plurality of limiting ribs 17 are circumferentially formed on the outer wall of the installation shaft 16, and the directions of the limiting ribs 17 are the same as the direction of the installation shaft 16; a limiting groove 19 for matching the limiting convex strip 17 is formed on the inner wall of the mounting hole 18 of the connecting seat 1.

After the installation axle 16 passes the mounting hole 18, spacing rib 17 can be arranged in spacing groove 19, fix installation axle 16 and connecting seat 1 through pin 20, with spacing rib 17 and spacing groove 19's cooperation, limit the relative rotation between installation axle 16 and the connecting seat 1, make the angle of installation unanimous between the carbon brush subassembly on the installation axle 16, make the more stable of being connected between installation axle 16 and the carbon brush subassembly, can effectively prevent the condition of becoming flexible and shifting, further assurance carbon brush row stability when using.

And two adjacent carbon brush assemblies are separated by an insulating sheet.

The conductive member 5 may be an electric wire or a copper tube, and the material is not exclusive, and any material may be used as long as it can conduct electricity.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A carbon brush assembly, comprising:

a connecting seat (1);

the upper end parts of the two carbon brush arms (2) are hinged on the two sides of the connecting seat (1);

the spring (3) is arranged between the two carbon brush arms (2), and the end parts of the spring (3) are respectively connected to the carbon brush arms (2);

the carbon brush (4) is arranged at the lower end of the carbon brush arm (2), and the carbon brush (4) is connected with the connecting seat (1) through a conductive piece (5);

the lower extreme shaping of carbon brush arm (2) has rotation chamber (6), and the inner wall that rotates chamber (6) is provided with joint portion one (7), is provided with joint portion two (8) of cooperation joint portion one (7) on the lateral wall of carbon brush (4), realizes that carbon brush (4) and rotation that rotates chamber (6) are connected.

2. The carbon brush assembly according to claim 1, wherein:

the upper end shaping of carbon brush (4) has arc convex surface (9), and the bottom shaping of rotating chamber (6) has arc wall (10), and arc convex surface (9) are arranged in arc wall (10), and arc convex surface (9) activity is supported and is pressed in the bottom of arc wall (10).

3. The carbon brush assembly according to claim 1 or 2, wherein:

the lower extreme of carbon brush arm (2) upwards caves in and forms notch (11), and this notch (11) run through the side of rotating chamber (6), in notch (11) was arranged in to electrically conductive piece (5) tip, and was connected with carbon brush (4).

4. The carbon brush assembly according to claim 3, wherein:

the size L of the notch (11) is smaller than the size S of the rotating cavity (6).

5. The carbon brush assembly according to claim 1, wherein:

the first clamping portion (7) is a first clamping protrusion, the second clamping portion (8) is a first clamping groove, and the first clamping protrusion is clamped in the first clamping groove to achieve installation and fixation of the carbon brush (4) in the rotating cavity (6).

6. The carbon brush assembly according to any one of claims 1 to 2 or 3 to 5, wherein:

the upper end of carbon brush arm (2) undercut shaping slot (12), the both sides of connecting seat (1) all are provided with connecting axle (13), slot (12) are arranged in to connecting axle (13) to realize being connected between carbon brush arm (2) and connecting seat (1).

7. The carbon brush assembly according to claim 6, wherein:

the slot (12) comprises a guide part (14) and a rotating part (15), and the distance F between the guide part (14) and the rotating part (15) is smaller than the diameter G of the rotating part (15).

8. A carbon brush row, comprising:

a mounting shaft (16), a plurality of carbon brush assemblies according to any one of claims 1 to 7 being arranged side by side on the mounting shaft (16).

9. The carbon brush row according to claim 8, wherein:

the utility model discloses a fixing device for mounting shaft, including mounting shaft (16), connecting seat (1), the outer wall of installation axle (16) is gone up circumference and is provided with a plurality of spacing sand grips (17), mounting hole (18) have been seted up on connecting seat (1), and the shaping has spacing groove (19) of the spacing sand grip (17) of cooperation on the inner wall of mounting hole (18), and both ends face of connecting seat (1) is run through in spacing groove (19), and installation axle (16) are worn to establish in mounting hole (18) and are fixed through pin (20).