CN219067434U

CN219067434U - Novel electric brush holder assembly of direct current motor

Info

Publication number: CN219067434U
Application number: CN202320053855.5U
Authority: CN
Inventors: 陈卫兵; 许光辉
Original assignee: Hangzhou Xin Vtech Drive Technology Co ltd
Current assignee: Hangzhou Xin Vtech Drive Technology Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-05-23
Anticipated expiration: 2033-01-09

Abstract

The utility model relates to the field of brush holders, in particular to a brush holder assembly of a novel direct current motor, which comprises a brush holder assembly, a mounting seat, a connecting pressurizing assembly and a protecting assembly, wherein the brush holder assembly is mounted on the mounting seat, the mounting seat and the brush holder assembly are connected with the protecting assembly, the connecting pressurizing assembly is used for limiting and guiding the brush holder assembly to be mounted, the brush holder assembly comprises a brush holder and a brush, the brush holder is sleeved on the brush, the brush comprises a carbon brush and an elastic piece, one end of the carbon brush is connected with the elastic piece, the brush holder is provided with a welding hole and a mounting hole, the welding hole is formed in a brush holder wall, the end face of one end of the brush holder is provided with the mounting hole, the mounting hole is communicated with the welding hole in an orthogonal mode, the mounting hole is used for fastening and mounting of an electric wire, the end of the electric wire is further fastened while the electric wire is welded with the brush holder, and welding spots at the welding points of the welding position are prevented from being melted due to overlarge current, overhigh temperature and motor shake, and the welding spots are prevented from falling.

Description

Novel electric brush holder assembly of direct current motor

Technical Field

The utility model relates to the field of brush holders, in particular to a novel brush holder assembly of a direct current motor.

Background

With the development of the age, various high-power electric equipment is increasingly increased. The motor is generally used as a kinetic energy supply unit of high-power electric equipment. Along with the increase of the power of electric equipment, the requirements on the power of the motor are also increasing. The brush is used as an important conductive element in the motor and is responsible for conducting current between the rotating part and the static part, and the conductive stability is an important index for measuring the motor. Most of the brush holders and wires in the existing direct current motors are welded, and metals with good conductivity are used as welding materials to ensure conductivity and reduce current loss. But the more expensive the more conductive the solder material, the more expensive the device manufacturing costs are increased. Meanwhile, the motor vibrates in the running process, the resistance of the welding part is generally larger than that of the conductive part, more heat is generated along with the increase of current, the temperature is higher, when the working time is overlong or the current is overlarge, the metal at the welding part of the brush holder and the electric wire is easy to melt, and the metal falls off due to the vibration of the motor, so that poor contact is caused, the working efficiency of the motor is seriously influenced, and the motor has larger potential safety hazard and lower working efficiency.

Disclosure of Invention

The utility model aims to provide a novel electric brush holder assembly of a direct current motor, so that the electric brush holder can be stably connected with an electric wire when in operation, and the defects of the prior art and the technical requirements which cannot be met are overcome.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the novel electric brush holder assembly of the direct current motor is characterized by comprising a brush holder assembly, an installation seat, a connecting pressurizing assembly and a protection assembly, wherein the brush holder assembly is installed on the installation seat, the installation seat and the brush holder assembly are connected with the protection assembly, and the connecting pressurizing assembly is used for limiting and guiding installation of the brush holder assembly;

the brush holder assembly comprises a brush holder and a brush, wherein the brush is arranged in the brush holder and comprises a carbon brush and an elastic piece, and one end of the carbon brush is connected with the elastic piece;

the brush holder is provided with welding hole and mounting hole, the welding hole sets up on the brush holder wall, the mounting hole has been seted up on the terminal surface of brush holder one end, mounting hole and welding hole quadrature intercommunication, mounting hole and welding hole are used for the fastening installation of electric wire, and this application passes through the welding hole with electric wire tip welding in the welding hole, and has set up the mounting hole, utilizes the installed part further to fasten the installation with electric wire tip, prevents to drop because of electric current is too big, and the high temperature and motor shake lead to the electric wire.

The welding hole is internally penetrated with an electric wire, the end face of the electric wire and the inner wall of the brush holder are positioned on the same horizontal plane, the mounting hole is internally provided with a fastener, the fastener is used for fastening and mounting the electric wire, and the fastener and the mounting hole of the welding hole can be matched by adopting threaded connection or other fastening connection modes so as to ensure stable connection and convenient disassembly and assembly of the electric wire and the brush holder.

The connecting pressurizing assembly comprises a first limiting piece, a second limiting piece and a wire, wherein the first limiting piece, the second limiting piece and the wire are arranged in the brush holder, one end of the first limiting piece is fixedly connected with a carbon brush, the other end of the first limiting piece is connected with the wire, and the other end of the wire is connected with the second limiting piece;

the utility model discloses a carbon brush, including first locating part, second locating part, commutator, first locating part overcoat is equipped with the elastic component, the elastic component sets up between second locating part and carbon brush, and this application guarantees the flexibility of carbon brush through setting up the spring piece, guarantees the carbon brush simultaneously and electrically conducts with the steady contact of commutator through the pressure of elastic component, guarantees the stability of elastic component through setting up first locating part and second locating part.

The second limiting piece is arranged outside the elastic piece and comprises a bottom plate and a connecting piece, the connecting piece is arranged on the bottom plate and extends out towards the direction of the elastic piece, a limiting part is further arranged on the bottom plate and is arranged in the brush holder, the bottom plate is propped against the tail end of the brush holder, when the protective cover is screwed up, the bottom plate and the electric brush ensure that current is conducted from the brush holder to the bottom plate of the second limiting piece through the pressure of the protective cover, and the bottom plate conducts the current to the carbon brush through a wire, so that the conduction of the current is ensured;

the limiting component is used for limiting the elastic component, the carbon brush is tightly pressed on the commutator through the spring component, current is guaranteed to be smoothly conducted to the commutator of the direct current motor, a lead in the application is connected with the bottom plate and also simultaneously connected with the carbon brush and used as a conductive element, and the limiting component is in the form of a limiting groove or a limiting boss and used for limiting the elastic component.

The protective component comprises a sleeve and a protective cover, the sleeve is uniformly arranged on the mounting seat, the sleeve is sleeved on the outer wall of the brush holder, and the protective cover is arranged at one end of the brush holder to prevent the electric brush from falling off;

the sleeve and the protective cover are insulating pieces, and the protective cover and the sleeve can be mounted in a threaded connection or clamping connection mode or other connection modes convenient to assemble and disassemble so as to prevent electric leakage and naked leakage of a circuit.

The protection assembly further comprises an outlet and a wire sleeve, the outlet is arranged on the mounting seat, one end of the outlet is connected with the wire sleeve, the wire sleeve is internally used for mounting wires, the outlet and the wire sleeve are insulating pieces, and the outlet and the wire sleeve are designed for protecting and guiding circuits and preventing the circuits from electric leakage.

The number of the brush holders is set to be even, the welding holes are symmetrically formed in the brush holders, the number of the mounting holes is the same as that of the welding holes, the mounting holes and the welding holes are matched with each other, the electric wire is stably mounted, and the even number of the brush holders is used as an anode and a cathode for better uniform classification.

The brush holders are connected with each other through wires, the brush holders connected to the two ends of the same wire are the same electrode, the colors of the outer insulating layers of the wires are processed differently so as to be convenient for distinguishing the positive electrode and the negative electrode, and the brush holders connected with the wires insulated in the same color are the same electrode.

The inside commutator that is provided with of mount pad, carbon brush and commutator sliding connection through being connected carbon brush and commutator, guarantees that the circuit is complete, realizes the electric current conduction.

The electric wire adopts a halogen-free electric automobile cable.

Compared with the prior art, the utility model has the beneficial effects that: this application is through setting up the welding hole, with electric wire tip and brush holder welding, set up the mounting hole simultaneously, and with mounting hole and welding hole quadrature intercommunication, further fasten electric wire tip from the side, prevent that the electric wire from melting because of the solder joint of electric current is too big, the too high solder joint that leads to the welding part of temperature, the circuit drops, and the side fastening of mounting hole also prevents to avoid motor vibration to lead to the unstable problem of electric wire and brush holder connection, make the brush holder more firm with the connection of electric wire, guarantee the circuit closure, further realize motor steady operation, guarantee motor work efficiency, prevent to drop because of the electric wire and arouse potential safety hazards such as electric leakage.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of the present utility model;

FIG. 3 is a schematic view illustrating other view angles of the internal structure of the present utility model;

FIG. 4 is a schematic view of an internal structure of the present utility model from another perspective;

FIG. 5 is a schematic view of the brush and connecting pressurizing assembly of the present utility model;

FIG. 6 is a schematic view of a connecting pressurizing assembly according to the present utility model;

FIG. 7 is a schematic view of the brush holder of the present utility model;

in the figure: the brush holder assembly 1, the brush holder 1-1, the welding hole 1-11, the mounting hole 1-12, the electric brush 1-2, the carbon brush 1-21, the elastic piece 1-22, the mounting seat 2, the commutator 2-1, the connecting pressurizing assembly 3, the first limiting piece 3-1, the second limiting piece 3-2, the second limiting piece 3-21, the connecting piece 3-22, the limiting piece 3-23, the lead 3-3, the protection assembly 4, the sleeve 4-1, the protective cover 4-2, the wire outlet 4-3 and the wire sleeve 4-4.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it is to be understood that: the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

Referring to the drawings, embodiments of the utility model

Examples:

as shown in fig. 1, 2, 4, 7: the utility model provides a novel brush holder assembly of direct current motor, includes brush holder assembly 1, mount pad 2, connects pressurization subassembly 3 and protection subassembly 4, brush holder assembly 1 installs on mount pad 2, mount pad 2 and brush holder assembly 1 are connected with protection subassembly 4, connect pressurization subassembly 3 and be used for the spacing direction installation of brush holder assembly 1;

the brush holder assembly 1 comprises a brush holder 1-1 and a brush 1-2, wherein the brush holder 1-1 is sleeved on the brush 1-2, the brush 1-2 comprises a carbon brush 1-21 and an elastic piece 1-22, and one end of the carbon brush 1-21 is connected with the elastic piece 1-22;

the electric wire brush comprises a brush holder 1-1, and is characterized in that the brush holder 1-1 is provided with a welding hole 1-11 and a mounting hole 1-12, the welding hole 1-11 is formed in the wall of the brush holder 1-1, the mounting hole 1-12 is formed in the end face of one end of the brush holder 1-1, the mounting hole 1-12 is communicated with the welding hole 1-11 in an orthogonal mode, the mounting hole 1-12 and the welding hole 1-11 are used for fastening and mounting an electric wire, a spring is adopted as an elastic piece 1-22, the mounting hole is designed into a threaded hole, the end portion of the electric wire is stripped of 5mm, the end portion of the electric wire is penetrated into the welding hole, and the electric wire is further fastened and mounted from the side face through the mounting hole 1-12, so that the electric wire is prevented from falling.

As shown in fig. 7: the electric wire is penetrated into the welding hole 1-11, the end face of the electric wire and the inner wall of the brush holder 1-1 are positioned on the same horizontal plane, a fastener is arranged in the mounting hole 1-12, the fastener is used for fastening and mounting the electric wire, the fastener is a screw with the specification of M3 x 4, the screw tightening torque is set to be 2.4N.m, the fastener is used for mounting the brush holder 1-1 and the electric wire, the external insulation skin is stripped from one end of the electric wire connected with the welding hole 1-11, the length of the stripped insulation skin is consistent with the wall thickness of the brush holder 1-1, the stripped power wire head penetrates from the outer wall of the welding hole 1-11 to the inner wall to ensure that the edge of the power wire head is kept flush with the arc surface of the inner wall of the brush holder 1-1, then a matched screw is used for fastening the power wire head to be welded at the mounting hole 1-12, and after the power wire head to be welded is fastened by a jackscrew, the fastened wire head is welded to the welding hole 1-11 by using a tin technology of a butt welder.

As shown in fig. 6: the connecting pressurizing assembly 3 comprises a first limiting piece 3-1, a second limiting piece 3-2 and a wire 3-3, wherein the first limiting piece 3-1, the second limiting piece 3-2 and the wire 3-3 are arranged in the brush holder 1-1, one end of the first limiting piece 3-1 is fixedly connected with a carbon brush 1-21, the other end of the first limiting piece 3-1 is connected with the wire 3-3, and the other end of the wire 3-3 is connected with the second limiting piece 3-2;

the first limiting part 3-1 and the conducting wire 3-3 are sleeved with the elastic part 1-22, the elastic part 1-22 is arranged between the second limiting part 3-2 and the carbon brush 1-21, the section of the carbon brush is square, the shape and the size of the carbon brush are consistent with those of the square inner cavity of the brush holder 1-1, the carbon brush 1-21 can be arranged in the inner cavity of the brush holder 1-1 in a penetrating mode and can be in tight contact with the inner wall of the brush holder 1-1, and the conducting wire 3-3 is used for conducting electricity.

As shown in fig. 5 and 6: the second limiting piece 3-2 is arranged outside the elastic piece 1-22, the second limiting piece 3-2 comprises a bottom plate 3-21 and a connecting piece 3-22, the connecting piece 3-22 is arranged on the bottom plate 3-21 and extends towards the elastic piece 1-22, the bottom plate 3-21 is also provided with a limiting piece 3-23, the connecting piece 3-22 and the limiting piece 3-23 are used for limiting the elastic piece 1-22, the connecting piece 3-22 plays a limiting role on the elastic piece and is connected with an electric wire at the same time, the second limiting piece plays a conductive connection role with the brush holder, the limiting piece 3-23 is limited and installed in a square inner cavity of the brush holder 1-1, the bottom plate 3-2 is propped against the tail end of the brush holder 1-1, when the protective cover is screwed, pressure of the bottom plate 3-2 and the brush holder 1-1 is guaranteed to be conducted to the bottom plate 3-21 of the second limiting piece 3-2 through the connecting piece 4-2, the second limiting piece 3-2 is designed into a U-shaped design, the limiting piece 3-23 is designed into a groove for being used for stably pressing and connecting the second limiting piece 1-22 and the conductive piece 1-2 through the conductive groove 3-21, and the conductive groove is guaranteed to be connected with the second limiting piece 3-21 through the conductive groove 3-21, and the conductive groove is guaranteed to be stably connected with the conductive piece 3-21 through the protective cover, and the conductive groove is screwed with the protective cover 3-2.

1. As shown in fig. 1, 2 and 3: the protection component 4 comprises a sleeve 4-1 and a protection cover 4-2, the sleeve 4-1 is uniformly arranged on the mounting seat 2, the sleeve 4-1 is sleeved on the outer wall of the brush holder 1-1, and the protection cover 4-2 is arranged at one end, far away from the mounting hole 1-12, of the brush holder 1-1;

the sleeve 4-1 and the protective cover 4-2 are both insulating parts, the protective cover 4-2 is an injection molding integrated part, and is of a groove structure, so that the insulating part exposed outside after installation is prevented from falling off, the protective cover 4-2 is in threaded connection with the brush holder 1-1 and is matched with the second limiting part 3-2 for use, the electric brush 1-2 is limited and electrically connected, and the carbon brush 1-21 can still be in close contact with the rotary sliding surface of the commutator 2-1 under the top pressure of the elastic part 1-22 even under the vibration working condition.

As shown in fig. 1, 2 and 3: the protection assembly 4 further comprises an outlet 4-3 and a wire sleeve 4-4, the outlet 4-3 is arranged on the mounting seat 2, one end of the outlet 4-3 is connected with the wire sleeve 4-4, wires are arranged inside the wire sleeve 4-4, and the outlet 4-3 and the wire sleeve 4-4 are insulating pieces.

As shown in fig. 7: the number of the brush holders 1-1 is set to be even, the welding holes 1-11 are symmetrically formed in the brush holders 1-1, the number of the mounting holes 1-12 is the same as that of the welding holes 1-11, and positive electrodes and negative electrodes of the 4 brush holders 1-1 and 4 brush holders 1-1 are alternately arranged.

The brush holders 1-1 are connected with each other through wires, the brush holders 1-1 connected to two ends of the same wire are the same electrode, the welding holes 1-11 on the walls of the adjacent 2 positive brush holders are connected through red wires, the red wires are wired along a U-shaped line to avoid the carbon brush 1-21 and the rotating sliding surface of the commutator 2-1, one end of the other red wire is connected to the spare welding hole 1-11 of one of the 2 positive brushes, and the other end of the other red wire is penetrated by an outlet wire as the positive electrode of the brush; the welding holes 1-11 on the adjacent 2 negative brush holder walls are connected through black wires, the black wires are distributed along a U-shaped line to avoid the rotating sliding surface of the carbon brush 1-21 and the commutator 2-1, one end of the other black wire is connected to the spare welding hole 1-11 of one of the 2 negative brushes, and the other end of the black wire is penetrated with an outgoing wire outlet as the negative electrode of the electric brush 1-2.

As shown in fig. 3 and 5: the commutator 2-1 is arranged in the mounting seat 2, the carbon brush 1-21 is connected with the commutator 2-1 in a sliding way, and the elastic piece 1-22 is used for pressing the carbon brush 1-21 to the rotating sliding surface of the commutator 2-1, so that the carbon brush 1-21 is tightly contacted with the rotating sliding surface of the commutator 2-1 and conducts current.

The electric wire adopts a halogen-free electric automobile cable, and the electric wire adopts a 6mm < 2 > halogen-free electric automobile cable at 125 ℃.

Working principle: according to the electric wire, the insulating layer at the end part of the electric wire is removed, the end part of the electric wire penetrates into the welding hole 1-11, then the end part of the electric wire is further compressed through the mounting hole 1-12 by using the fastener, the electric wire is further fastened and connected with the brush holder 1-1 by using the fastener in a welding mode, the position of the electric wire is further locked by using the fastener, the end part of the electric wire is in the same plane with the inner side wall of the brush holder 1-1, the brush holder 1-1 is connected with the second limiting part 3-2 by the connecting part 3-22, the second limiting part 3-2 is connected with the carbon brush 1-21 by using the lead 3-3, and the carbon brush 1-21 is connected with the commutator 2-1 to form a closed loop.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to specific embodiments, and that the embodiments described in the examples can be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

Claims

1. The novel electric brush holder assembly of the direct current motor is characterized by comprising a brush holder assembly (1), a mounting seat (2), a connecting pressurizing assembly (3) and a protecting assembly (4), wherein the brush holder assembly (1) is mounted on the mounting seat (2), the mounting seat (2) and the brush holder assembly (1) are connected with the protecting assembly (4), and the connecting pressurizing assembly (3) is used for limiting connection and pressurizing mounting of the brush holder assembly (1);

the brush holder assembly (1) comprises a brush holder (1-1) and an electric brush (1-2), wherein the brush holder (1-1) is sleeved on the electric brush (1-2), the electric brush (1-2) comprises a carbon brush (1-21) and an elastic piece (1-22), and one end of the carbon brush (1-21) is connected with the elastic piece (1-22);

the electric wire fixing device is characterized in that the brush holder (1-1) is provided with a welding hole (1-11) and a mounting hole (1-12), the welding hole (1-11) is formed in the wall of the brush holder (1-1), the mounting hole (1-12) is formed in the end face of one end of the brush holder (1-1), the mounting hole (1-12) is communicated with the welding hole (1-11) in an orthogonal mode, and the mounting hole (1-12) and the welding hole (1-11) are used for fastening and mounting of an electric wire.

2. The brush holder assembly of the novel direct current motor according to claim 1, wherein the welding hole (1-11) is internally provided with an electric wire in a penetrating manner, the end face of the electric wire and the inner wall of the brush holder (1-1) are positioned on the same horizontal plane, and the mounting hole (1-12) is internally provided with a fastener which is used for fastening and mounting the electric wire.

3. The brush holder assembly of the novel direct current motor according to claim 1 or 2, wherein the connecting pressurizing assembly (3) comprises a first limiting piece (3-1), a second limiting piece (3-2) and a wire (3-3), the first limiting piece (3-1), the second limiting piece (3-2) and the wire (3-3) are arranged inside the brush holder (1-1), one end of the first limiting piece (3-1) is fixedly connected with a carbon brush (1-21), the other end of the first limiting piece (3-1) is connected with the wire (3-3), and the other end of the wire (3-3) is connected with the second limiting piece (3-2);

the first limiting piece (3-1) and the conducting wire (3-3) are sleeved with the elastic piece (1-22), and the elastic piece (1-22) is arranged between the second limiting piece (3-2) and the carbon brush (1-21).

4. A brush holder assembly for a novel direct current motor according to claim 3, characterized in that the second limiting member (3-2) is arranged outside the elastic member (1-22), the second limiting member (3-2) comprises a bottom plate (3-21) and a connecting member (3-22), the connecting member (3-22) is arranged on the bottom plate (3-21) and extends towards the elastic member (1-22), the bottom plate (3-21) is further provided with a limiting member (3-23), and the limiting member (3-23) is used for limiting the elastic member (1-22).

5. The brush holder assembly of a novel direct current motor according to claim 1, 2 or 4, wherein the protection assembly (4) comprises a sleeve (4-1) and a protective cover (4-2), the sleeve (4-1) is uniformly arranged on the mounting seat (2), the sleeve (4-1) is sleeved on the outer wall of the brush holder (1-1), and the protective cover (4-2) is arranged at one end, far away from the mounting hole (1-12), of the brush holder (1-1);

the sleeve (4-1) and the protective cover (4-2) are both insulating pieces.

6. The brush holder assembly of a novel direct current motor according to claim 1, 2 or 4, wherein the protection assembly (4) further comprises an outlet (4-3) and a wire sleeve (4-4), the outlet (4-3) is arranged on the mounting seat (2), one end of the outlet (4-3) is connected with the wire sleeve (4-4), wires are arranged inside the wire sleeve (4-4), and the outlet (4-3) and the wire sleeve (4-4) are insulating pieces.

7. The brush holder assembly of a novel direct current motor according to claim 6, wherein the number of the brush holders (1-1) is set to an even number, the welding holes (1-11) are symmetrically arranged on the brush holders (1-1), and the number of the mounting holes (1-12) is the same as the number of the welding holes (1-11).

8. A brush holder assembly for a novel dc motor according to claim 2, 4 or 7, wherein the brush holders (1-1) are connected to each other by wires, and the brush holders (1-1) connected to both ends of the same wire are the same electrode.

9. The brush holder assembly of a novel direct current motor according to claim 1, 2, 4 or 7, wherein the commutator (2-1) is arranged inside the mounting base (2), and the carbon brush (1-21) is slidably connected with the commutator (2-1).

10. The brush holder assembly of a new dc motor as set forth in claim 8, wherein said electrical wires are halogen-free electric vehicle cables.