CN217590405U

CN217590405U - Permanent magnet direct current motor convenient to disassemble and assemble

Info

Publication number: CN217590405U
Application number: CN202221732626.8U
Authority: CN
Inventors: 阮飞
Original assignee: Changzhou Samid Electromechanical Equipment Co ltd
Current assignee: Changzhou Samid Electromechanical Equipment Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-10-14
Anticipated expiration: 2032-07-06

Abstract

The utility model relates to the technical field of electric machine, a easy dismounting's permanent magnet direct current motor is disclosed, which comprises a housin, the front end housing, the rear end cap, the bolt, permanent magnet steel, spacing piece, rotor core, armature winding, the apparatus further comprises a rotating shaft, the commutator, the carbon brush frame, the carbon brush spring, the carbon brush, bearing and bearing housing, spacing piece sets up respectively in permanent magnet steel's both sides, spacing piece's upper end portion and lower tip respectively with permanent magnet steel butt, the carbon brush inlays the preceding tip of locating the storage tank respectively slidable, and the both ends of carbon brush spring set up with the rear end portion of storage tank and the rear end portion butt of carbon brush respectively, the inside wall of front end housing and rear end cap is concave respectively and is equipped with a bearing hole, bearing housing detachably inlays respectively and locates the bearing downthehole setting, the bearing inlays respectively and locates in the bearing housing, the preceding end wall setting that the front end housing stretched out the front end housing of pivot, the utility model discloses can make the assembly and the dismantlement of motor convenient for more local convenient and fast, the motor overhauls and maintains, and has strong practicality.

Description

Permanent magnet direct current motor convenient to disassemble and assemble

Technical Field

The utility model relates to the technical field of electric machines, in particular to easy dismounting's permanent magnet direct current motor.

Background

The brush DC motor is a DC motor, the stator of the brush motor is provided with a fixed main pole and a brush, and the rotor is provided with an armature winding and a commutator. Electric energy of a direct current power supply enters the armature winding through the electric brush and the commutator to generate armature current, and a magnetic field generated by the armature current interacts with the main magnetic field to generate electromagnetic torque, so that the motor rotates to drive a load.

The current brush direct current motor's motor shaft both ends's bearing adopts the mode of direct mount in the dead eye mostly, because the machining precision of box dead eye can have the error, leads to the bearing to meet the difficulty in assembly and dismantlement, causes inconvenience for motor assembly and dismantlement maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a easy dismounting's permanent magnet direct current motor, aim at solving current brush direct current motor assembly and dismantle the inconvenient technical problem of maintenance.

In order to achieve the above object, the permanent magnet dc motor comprises a housing, a front end cover, a rear end cover, a bolt, a permanent magnet steel, a limiting piece, a rotor core, an armature winding, a rotating shaft, a commutator, a carbon brush holder, a carbon brush spring, a carbon brush, a bearing and a bearing sleeve, wherein the front end cover and the rear end cover are detachably covered on the front end portion and the rear end portion of the housing respectively, bolt holes are respectively concavely formed on both sides of the front end cover, first threaded holes are respectively concavely formed on both sides of the rear end cover, the bolt is respectively inserted into the bolt holes and screwed into the first threaded holes, the permanent magnet steel is arranged in a circular arc structure, the permanent magnet steel is respectively arranged on the inner peripheral wall of the housing, the limiting piece is respectively arranged on both sides of the permanent magnet steel, and a circular arc connecting portion is respectively arranged in the middle of the limiting piece, the bolts are respectively arranged on the arc-shaped connecting parts in a penetrating way and are respectively abutted against the inner circumferential wall of the arc-shaped connecting parts, the outer circumferential wall of the arc-shaped connecting parts is respectively abutted against the inner circumferential wall of the shell, the upper end part and the lower end part of the limiting piece are respectively abutted against the permanent magnet steel, the rotor core is rotatably arranged in the shell, the outer circumferential wall of the rotor core is connected with the inner circumferential wall of the permanent magnet steel at intervals, the rotor core is convexly provided with a plurality of winding parts along the circumferential direction, the armature windings are respectively wound on the winding parts, the rotating shaft is arranged on the rotor core and rotates along with the rotor core, the commutator is arranged at the rear end part of the rotating shaft, the carbon brush holder is detachably arranged on the inner side wall of the rear end cover, and two sides of the carbon brush holder are respectively provided with a containing groove extending along the radial direction, the utility model discloses a bearing, including the carbon brush spring, the carbon brush, the front end of carbon brush spring, the rear end butt setting of carbon brush, the front end of carbon brush all is circular arc curved surface shape structure setting, just the front end of carbon brush divide equally do not with the periphery wall of commutator slides the butt electricity and is connected, the bearing set up respectively in the both ends of pivot, the inside wall of front end housing and rear end cap is concave respectively to be equipped with a bearing hole, the bearing housing detachably inlays respectively to be located set up in the bearing hole, the bearing detachably inlays respectively to be located in the bearing housing, the front end portion of pivot stretches out the front end wall setting of front end housing, the rear end of casing is equipped with an entrance hole.

Further, still include fastening screw, the carbon brush frame is equipped with a plurality of screw holes along the circumferencial direction is concave, the inside wall of rear end cap is equipped with a plurality of second screw holes along the circumferencial direction, fastening screw wears to locate respectively the screw hole, and revolve in the threaded setting of second.

Further, still include the retaining ring, the periphery wall at the both ends of pivot is concave respectively and is equipped with a draw-in groove that extends along the circumferencial direction, the internal perisporium of retaining ring inlays respectively to be located set up in the draw-in groove, just the retaining ring respectively with the inside wall butt of bearing sets up.

Further, still include the sealing washer, the sealing washer set up respectively in the both ends of casing, just the sealing washer respectively with the back end wall of front end housing and the front end wall butt setting of back end housing.

Further, the rear end wall of front end housing and the front end wall of rear end housing are equipped with a limit flange along the circumferencial direction arch respectively, limit flange inlays respectively to be located set up in the casing, just limit flange's periphery wall equallyd divide respectively with the internal perisporium butt setting of casing.

Further, the upper end and the lower tip of spacing piece are equipped with a backup pad respectively, the backup pad all is the inclined plane structure setting, the backup pad equally divide respectively with permanent magnet steel's both ends wall butt sets up.

Furthermore, the front end wall of the front end cover is concavely provided with a plurality of mounting threaded holes.

Furthermore, the shell, the front end cover and the rear end cover are all made of aluminum alloy materials.

Further, the carbon brush springs are all cylindrical spiral springs.

Adopt the technical scheme of the utility model, following beneficial effect has: the technical scheme of the utility model, through adopting the bearing housing, make the machining precision of front end housing and rear end cap widen, make the work efficiency of front end housing and rear end cap processing improve greatly, the bearing housing makes the assembly of bearing and dismantlement convenient and fast more, effectively solve the difficult problem of motor assembly, and play the guard action to the bearing, and the bearing housing still can effectively avoid the axial float of bearing, avoid the bearing to appear the phenomenon of direction skew because of the vibration, provide constant force so that it keeps with the commutator steady contact on applying on the carbon brush through utilizing the carbon brush spring, make it conduct current steadily between fixed body and rotator, the brush spring still plays the cushioning effect, can effectively reduce the loss, prolong the carbon brush life, and reduce the current loss, can avoid permanent magnet steel to take place relative displacement through adopting spacing piece, thereby the life of motor has been prolonged, and reliability and whole quality have been improved, can make the assembly and the dismantlement of motor convenient for maintenance the carbon brush more local convenient and fast, therefore, high practicability is strong.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of a permanent magnet dc motor according to the present invention;

fig. 2 is a schematic view of the overall structure of the permanent magnet dc motor with another viewing angle, which is provided by the present invention and is convenient to assemble and disassemble;

fig. 3 is an exploded schematic view of a permanent magnet dc motor according to the present invention;

fig. 4 is another exploded schematic view of the permanent magnet dc motor according to the present invention;

fig. 5 is another schematic exploded view of the permanent magnet dc motor of the present invention, which is easy to assemble and disassemble.

The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a easy dismounting's permanent magnetism direct current motor.

As shown in fig. 1 to 5, in an embodiment of the present invention, the permanent magnet dc motor includes a housing 101, a front cover 102, a rear cover 103, a bolt 104, a permanent magnet steel 105, a limiting plate 106, a rotor core 107, an armature winding (not shown), a rotating shaft 108, a commutator 109, a carbon brush holder 110, a carbon brush spring (not shown), a carbon brush 111, a bearing 112, and a bearing sleeve 113, wherein the front cover and the rear cover are detachably covered on a front end portion and a rear end portion of the housing, a bolt hole 1021 is respectively recessed on two sides of the front cover, a first threaded hole 1031 is respectively recessed on two sides of the rear cover, the bolt is respectively inserted into the bolt hole and is screwed into the first threaded hole, the permanent magnet steel is arranged in an arc structure, the permanent magnet steel is respectively arranged on an inner peripheral wall of the housing, the limiting pieces are respectively arranged at two sides of the permanent magnet steel, the middle of each limiting piece is provided with an arc-shaped connecting part 1061, the bolts are respectively arranged in the arc-shaped connecting parts in a penetrating way and are respectively abutted against the inner peripheral wall of the arc-shaped connecting parts, the outer peripheral wall of the arc-shaped connecting parts are respectively abutted against the inner peripheral wall of the shell, the upper end part and the lower end part of each limiting piece are respectively abutted against the permanent magnet steel, the rotor core is rotatably arranged in the shell, the outer peripheral wall of the rotor core is connected with the inner peripheral wall of the permanent magnet steel at intervals, the rotor core is convexly provided with a plurality of winding parts 1071 along the circumferential direction, the armature windings are respectively wound on the winding parts, the rotating shaft is arranged on the rotor core and rotates along with the rotor core, and the commutator is arranged at the rear end part of the rotating shaft, carbon brush holder detachably set up in on the inside wall of rear end cap, the both sides of carbon brush holder are equipped with a storage tank 1101 that extends along radial direction respectively, the carbon brush spring set up respectively in the rear end portion of storage tank, the carbon brush inlays respectively slidable and locates the preceding tip of storage tank, just the both ends of carbon brush spring respectively with the rear end portion of storage tank and the rear end portion butt setting of carbon brush, the preceding tip of carbon brush all is the setting of circular arc curved surface shape structure, just the preceding tip of carbon brush equally divide do not with the periphery wall slip butt electricity of commutator is connected, the bearing set up respectively in the both ends of pivot, the inside wall of front end cap and rear end cap is equipped with a bearing hole 114 respectively, the bearing housing detachably inlays respectively and locates in the bearing hole set up, the bearing detachably inlays respectively and locates in the bearing housing, the preceding tip of pivot stretches out the preceding end wall setting of front end cap, the rear end portion of casing is equipped with an entrance hole 1011.

Specifically, the brush spring mainly plays a role in providing elasticity, so that the carbon brush cannot be worn too fast, the carbon brush spring is utilized to apply a constant force on the carbon brush to keep the carbon brush in stable contact with the commutator, the carbon brush can stably conduct current between the fixed body and the rotating body, the brush spring also plays a buffering role, the carbon brush cannot be worn too fast, the loss of the carbon brush can be effectively reduced, the service life of the carbon brush is prolonged, the current loss is reduced, and the service life of the motor is prolonged, and the reliability and the overall quality are improved.

Specifically, still include fastening screw 115, the carbon brush frame is equipped with a plurality of screw holes 1102 along the circumferencial direction is concave, the inside wall of rear end cap is equipped with a plurality of second screw holes 1032 along the circumferencial direction, fastening screw wears to locate respectively the screw hole, and revolve in the threaded setting of second, the installation and the dismantlement of the carbon brush frame of being convenient for, the motor maintenance of being convenient for.

Specifically, still include retaining ring 116, the periphery wall at the both ends of pivot is concave respectively and is equipped with a draw-in groove 1081 that extends along the circumferencial direction, the internal perisporium of retaining ring inlays respectively to be located set up in the draw-in groove, just the retaining ring respectively with the inside wall butt of bearing sets up, can prevent effectively that the phenomenon of axial float from appearing in the bearing.

Specifically, still include sealing washer 117, the sealing washer set up respectively in the both ends of casing, just the sealing washer respectively with the back end wall of front end housing and the front end wall butt setting of back end housing play good sealed effect, the life of extension motor.

Specifically, the rear end wall of front end housing and the front end wall of rear end housing are protruding respectively along the circumferencial direction and are equipped with a limit flange 118, limit flange inlays respectively to be located set up in the casing, just limit flange's periphery wall equallyd divide respectively with the internal perisporium butt setting of casing for the assembly of motor is convenient and fast more.

Specifically, the upper end and the lower tip of spacing piece are equipped with a backup pad 1062 respectively, the backup pad all is the inclined plane structure setting, the backup pad equally divide do not with the both ends wall butt setting of permanent magnet steel plays good supporting role to permanent magnet steel, and spacing piece can avoid permanent magnet steel to take place relative displacement.

Specifically, the front end wall of the front end cover is concavely provided with a plurality of mounting threaded holes 1022, which is convenient for mounting and fixing the motor.

Specifically, the shell, the front end cover and the rear end cover are all made of aluminum alloy, the aluminum alloy is firm and durable, the motor is suitable for being used in various severe environments, the heat conducting performance is good, and the heat radiating performance of the motor is effectively improved.

Specifically, the carbon brush springs are all cylindrical spiral springs.

Specifically, the bearing sleeve can be adjusted to be tight and loose, so that the machining precision of the front end cover and the rear end cover is widened, the working efficiency of machining the front end cover and the rear end cover is greatly improved, the bearing sleeve enables the bearing to be assembled and disassembled more conveniently and quickly, the problem that the motor is difficult to assemble is effectively solved, the bearing is protected, the bearing sleeve can effectively avoid axial movement of the bearing, and the phenomenon that the bearing is deviated due to vibration is avoided.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. A permanent magnet direct current motor convenient to disassemble and assemble is characterized by comprising a shell, a front end cover, a rear end cover, a bolt, permanent magnet steel, a limiting piece, a rotor core, an armature winding, a rotating shaft, a commutator, a carbon brush holder, a carbon brush spring, a carbon brush, a bearing and a bearing sleeve, wherein the front end cover and the rear end cover are detachably arranged at the front end part and the rear end part of the shell respectively in a covering mode, bolt holes are respectively and concavely formed in two sides of the front end cover, first threaded holes are respectively and concavely formed in two sides of the rear end cover, the bolt is respectively arranged in the bolt holes in a penetrating mode and is screwed in the first threaded holes, the permanent magnet steel is arranged in an arc-shaped structure, the permanent magnet steel is respectively arranged on the inner peripheral wall of the shell, the limiting piece is respectively arranged on two sides of the permanent magnet steel, and an arc-shaped connecting portion is arranged in the middle of the limiting piece, the bolts are respectively arranged on the arc-shaped connecting parts in a penetrating way and are respectively abutted against the inner circumferential wall of the arc-shaped connecting parts, the outer circumferential wall of the arc-shaped connecting parts is respectively abutted against the inner circumferential wall of the shell, the upper end part and the lower end part of the limiting piece are respectively abutted against the permanent magnet steel, the rotor core is rotatably arranged in the shell, the outer circumferential wall of the rotor core is connected with the inner circumferential wall of the permanent magnet steel at intervals, the rotor core is convexly provided with a plurality of winding parts along the circumferential direction, the armature windings are respectively wound on the winding parts, the rotating shaft is arranged on the rotor core and rotates along with the rotor core, the commutator is arranged at the rear end part of the rotating shaft, the carbon brush holder is detachably arranged on the inner side wall of the rear end cover, and two sides of the carbon brush holder are respectively provided with a containing groove extending along the radial direction, the utility model discloses a carbon brush, including carbon brush spring, carbon brush, commutator, bearing, front end cover, bearing, the carbon brush spring set up respectively in the rear end portion of storage tank, the carbon brush inlays respectively the slidable to be located the preceding tip of storage tank, just the both ends of carbon brush spring respectively with the rear end portion of storage tank and the rear end portion butt setting of carbon brush, the preceding tip of carbon brush all is the circular arc curved surface shape structure setting, just the preceding tip of carbon brush equally divide do not with the periphery wall slip butt electricity of commutator is connected, the bearing set up respectively in the both ends of pivot, the inside wall of front end cover and rear end cover is concave respectively to be equipped with a bearing hole, bearing cover detachably inlays respectively and locates in the bearing hole sets up, the bearing detachably inlays respectively and locates in the bearing cover, the front end portion of pivot stretches out the front end wall setting of front end cover, the rear end portion of casing is equipped with an entrance hole.

2. The permanent magnet direct current motor convenient to assemble and disassemble according to claim 1, further comprising fastening screws, wherein a plurality of screw holes are concavely formed in the carbon brush holder along the circumferential direction, a plurality of second screw holes are formed in the inner side wall of the rear end cover along the circumferential direction, and the fastening screws are respectively arranged in the screw holes in a penetrating mode and screwed in the second screw holes.

3. The permanent magnet direct current motor convenient to assemble and disassemble according to claim 1, further comprising retaining rings, wherein the outer peripheral walls at the two ends of the rotating shaft are respectively and concavely provided with a clamping groove extending along the circumferential direction, the inner peripheral walls of the retaining rings are respectively embedded in the clamping grooves, and the retaining rings are respectively abutted against the inner side walls of the bearings.

4. The permanent magnet direct current motor convenient to assemble and disassemble according to claim 1, further comprising sealing rings, wherein the sealing rings are respectively arranged at two ends of the shell, and the sealing rings are respectively abutted against the rear end wall of the front end cover and the front end wall of the rear end cover.

5. The permanent magnet direct current motor according to claim 1, wherein a limiting flange is respectively protruded from the rear end wall of the front cover and the front end wall of the rear cover along a circumferential direction, the limiting flanges are respectively embedded in the housing, and outer peripheral walls of the limiting flanges are respectively abutted to inner peripheral walls of the housing.

6. The permanent magnet direct current motor according to claim 1, wherein a support plate is disposed at each of an upper end portion and a lower end portion of the position-limiting piece, the support plates are disposed in an inclined plane structure, and the support plates are disposed in abutment with the two end walls of the permanent magnet steel.

7. The permanent magnet direct current motor according to claim 1, wherein the front end wall of the front end cover is concavely provided with a plurality of mounting threaded holes.

8. The permanent magnet direct current motor convenient to disassemble and assemble according to claim 1, wherein the shell, the front end cover and the rear end cover are all made of aluminum alloy materials.

9. The permanent magnet direct current motor according to claim 1, wherein the carbon brush springs are cylindrical coil springs.