Household motor easy to maintain

Abstract

The utility model belongs to the technical field of motors, and discloses a household motor easy to maintain, which comprises a shell, a stator and a rotor are arranged in the shell, a rotating shaft is arranged at the center of the rotor, a reversing structure is arranged at one end of the rotating shaft, and the other end of the rotating shaft extends to the outer side of the shell to serve as a working end. A detachable rear end cover is installed on the shell close to the reversing structure, the stator is two sets of permanent magnets fixed by the shell, the rotor comprises a rotating shaft, a rotor iron core, a rotor winding and a commutator, bearing fixing blocks are arranged at the positions of bearings of the front cover and the rear cover, and the bearings can be rapidly replaced through the bearing fixing blocks. The electric brush module comprises a brush head block, an elastic sheet, a connecting end and a structural block, the brush head block and the commutator are combined to realize a commutation function, the structure design is compact and reasonable, common winding damage, bearing damage and electric brush damage problems of the motor are easy to maintain, and the maintenance process is simple and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, concretely is an easy maintenance household motor. BACKGROUND

[0002] Motor is a kind of equipment that converts electric energy into mechanical energy, it produces magnetic field by the action of electric current, to drive rotation or do other mechanical movement, and the basic working principle of motor is based on the principle of electromagnetic induction and lorentz force, when electric current passes through conductor, magnetic field is generated around conductor, when electric current passes through coil in motor, the magnetic field formed will interact with the magnetic field generated by stator, according to faraday's law of electromagnetic induction, a force, i.e. lorentz force, is generated, to make rotor rotate.

[0003] Common motor damage types can be divided into three categories, winding damage, bearing damage and brush damage, short circuit of motor winding can cause current to increase, motor overheating, and serious burning of insulating material, causing motor damage, motor winding open circuit can make motor partially or entirely lose electromagnetic conversion function, leading to motor unable to start or insufficient output, long-time operation and environmental factors can cause winding insulation material to age, reduce insulation performance and increase the risk of motor failure.

[0004] The existing household motor is difficult to maintain after winding, bearing and brush damage, and these problems cause motor damage maintenance to generally need professional technical personnel to operate. UTILITY MODEL CONTENTS

[0005] (1) technical problem solved

[0006] In view of the deficiencies of prior art, the utility model provides an easy maintenance household motor to solve the problems of motor damage difficult to maintain in the above background technology.

[0007] (2) technical scheme

[0008] To achieve the above purposes, the utility model provides the following technical scheme: an easy maintenance household motor, comprising a shell, a stator and a rotor are installed in the shell, a rotating shaft is arranged at the center of the rotor, a reversing structure is installed at one end of the rotating shaft, the other end of the rotating shaft extends to the outside of the shell as a working end, a front end cover is welded on the shell near the working end of the rotating shaft, and a detachable rear end cover is installed on the shell near the reversing structure.

[0009] Preferably, two groups of connecting ports are formed on the shell near the rear end cover, connecting ears corresponding to the connecting ports are welded on the rear end cover, and the connecting ears and the connecting ports are fixedly connected by bolts.

[0010] Preferably, the stator comprises two groups of permanent magnets, two groups of fixed blocks are arranged on the inner wall of the shell, and the permanent magnets are fixedly installed between the two groups of fixed blocks.

[0011] Preferably, the rotor comprises a rotating shaft, a rotor core, a rotor winding and a commutator, the rotor core is sleeved on the rotating shaft, the rotor core is composed of a plurality of core pieces arranged, the rotor winding is composed of a wire coil wound on the rotor core, and the commutator is installed on one side of the rotor close to the commutating structure and is electrically connected with the rotor winding.

[0012] Preferably, a bearing fixing block mounting port is formed on the front end cover corresponding to the rotating shaft, a bearing fixing block is installed in the bearing fixing block mounting port, a bearing mounting circular hole is formed in the center of the bearing fixing block, a threaded hole is formed on the outer side of the bearing fixing block, a bearing is installed at the bearing mounting circular hole, the bearing is fixedly installed on the bearing fixing block through a screw, and the bearing fixing block is fixedly installed on the front end cover corresponding to the bearing fixing block mounting port through a bolt.

[0013] Preferably, two groups of brush module mounting ports are formed on the rear end cover, two groups of brush modules are installed in the brush module mounting ports, a bearing fixing block mounting port is formed in the center of the rear end cover, a bearing fixing block is installed in the bearing fixing block mounting port, and a bearing is installed on the bearing fixing block.

[0014] Preferably, the brush module comprises a brush head block, an elastic sheet, a connecting end, a structure block and a fixing lug, the structure block is provided with the elastic sheet on the side close to the rotor, the other end of the elastic sheet is provided with the brush head block corresponding to the commutator, the side, away from the rotor, of the structure block is provided with the connecting end, the structure block is welded with the fixing lug corresponding to the brush module, and the structure block is fixedly installed on the rear end cover through a bolt.

[0015] Preferably, the commutating structure comprises a commutator and two groups of brush head blocks, the two groups of brush head blocks are respectively arranged on the upper and lower sides of the commutator and are electrically connected with the commutator.

[0016] (Three) beneficial effects

[0017] Compared with the prior art, the utility model provides an easy-to-maintain household motor with the following beneficial effects:

[0018] 1、 this easy-to-maintain household motor is provided with easy-to-dismount rear end cover, bearing fixing block and brush module, and is easy to maintain for the common winding damage, bearing damage and brush damage of motor, and the maintenance process is simple and convenient.

[0019] 2、 it is provided with rear end cover, and the rear end cover is connected with the shell through connecting lug and bolt, is convenient to dismount, can dismount rear end cover, replaces rotor, is convenient to maintain after the winding damage of motor, and the maintenance process is simple and convenient.

[0020] 3、 it is provided with bearing fixing block, and the bearing is fastened through the bearing fixing block, and the bearing fixing block can be conveniently installed on the front and rear end covers, and is convenient to maintain after the bearing damage of motor.

[0021] 4、Set up has the brush module, the brush module combines the brush and the electric connection end head to form a whole, solved the problem that needs to connect the brush and the electric connection end head when replacing the brush, can replace the whole brush module after the brush is damaged, it is convenient for the motor brush maintenance after being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of the utility model;

[0023] Figure 2 It is the shell and rear end cover schematic diagram of the utility model;

[0024] Figure 3 It is the stator structure schematic diagram of the utility model;

[0025] Figure 4 It is the rotor structure schematic diagram of the utility model;

[0026] Figure 5 It is the rotor structure schematic diagram of the utility model;

[0027] Figure 6 It is the front end cover schematic diagram of the utility model;

[0028] Figure 7 It is the rear end cover structure schematic diagram of the utility model;

[0029] Figure 8 It is the rear end cover structure schematic diagram of the utility model;

[0030] Figure 9 It is the brush module schematic diagram of the utility model;

[0031] Figure 10 It is the commutating structure schematic diagram of the utility model.

[0032] In the drawing: 1, shell;2, stator;3, rotor;4, rotating shaft;5, commutating structure;6, front end cover;7, rear end cover;8, connecting port;9, connecting lug;10, permanent magnet;11, rotor core;12, rotor winding;13, commutator;14, core piece;15, bearing fixed block installation port;16, bearing fixed block;17, bearing;18, bearing installation round hole;19, brush module;20, brush module installation port;21, brush head block;22, elastic sheet;23, connecting end head;24, structure block;25, fixed lug. DETAILED DESCRIPTION

[0033] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0034] Please refer to Figures 1-10 The utility model provides a technical scheme:

[0035] An easy-to-maintain household motor, comprising a shell 1, the shell 1 is installed with a stator 2 and a rotor 3, the rotor 3 is provided with a rotating shaft 4 in the center, one end of the rotating shaft 4 is installed with a commutating structure 5, the other end extends to the outside of the shell 1 as a working end, a front end cover 6 is welded on the shell 1 near the working end of the rotating shaft 4, and a detachable rear end cover 7 is installed on the shell 1 near the commutating structure 5. The device is a household DC motor, which can convert electrical energy into mechanical energy and output in the form of rotary force, and can be used as a driving source for a hoist, a pump and a mixer, is easy to maintain and convenient for household use, and the device is not provided with a heat dissipation hole, so that liquid cannot enter the heat dissipation hole to cause equipment damage.

[0036] Further, two groups of connecting ports 8 are formed on the shell 1 near the rear end cover 7, connecting ears 9 corresponding to the connecting ports 8 are welded on the rear end cover 7, and the connecting ears 9 and the connecting ports 8 are fixedly connected through bolts. The rear end cover 7 is of a detachable structure, which is convenient for maintenance after the device is damaged.

[0037] Further, the stator 2 comprises two groups of permanent magnets 10, two groups of fixing blocks are arranged on the inner wall of the shell 1, and the permanent magnets 10 are fixedly installed between the two groups of fixing blocks. The permanent magnets 10 cannot adopt an excitation structure, although the excitation structure of the electromagnetic principle is cheap, but the coil is easy to be damaged after long-time use, the service life of the permanent magnet is very high and almost will not be damaged, and the permanent magnet used as the stator does not need to be maintained, and the artificial permanent magnet made of ferroferric oxide can be used.

[0038] Further, the rotor 3 comprises the rotating shaft 4, a rotor core 11, a rotor winding 12 and a commutator 13, the rotor core 11 is sleeved on the rotating shaft 4, the rotor core 11 is composed of a plurality of core pieces 14 arranged in groups, the rotor winding 12 is composed of a wire coil wound on the rotor core 11, the commutator 13 is installed on one side of the rotor 3 near the commutating structure 5, and the commutator 13 is electrically connected with the rotor winding 12. The rotor 3 is a whole, if the rotor winding 12 is damaged during use, the whole rotor 3 can be replaced together with the commutator, the rotor 3 can be taken out after the rear end cover 7 is detached, and the replacement process is very convenient.

[0039] Further, the front end cover 6 is provided with a bearing fixing block mounting port 15 corresponding to the rotating shaft 4, and a bearing fixing block 16 is mounted in the bearing fixing block mounting port 15. A bearing mounting circular hole 18 is formed in the center of the bearing fixing block 16, and threaded holes are formed on the outer side of the bearing fixing block 16. A bearing 17 is mounted in the bearing mounting circular hole 18 and is fixed on the bearing fixing block 16 by screws. The bearing fixing block 16 is fixed on the front end cover 6 by bolts corresponding to the bearing fixing block mounting port 15. The damaged bearing 17 can be quickly replaced by the bearing fixing block 16. The four bolts perpendicular to the bearing 17 on the bearing fixing block 16 can be used to remove or tighten the bearing 17. After replacing the new bearing 17, the bearing fixing block 16 and the bearing 17 can be quickly and conveniently replaced as a whole through the bearing fixing block mounting port 15.

[0040] Further, two groups of brush module mounting ports 20 are formed on the rear end cover 7, and two groups of brush modules 19 are mounted in the brush module mounting ports 20. A bearing fixing block mounting port 15 is formed in the center of the rear end cover 7, and a bearing fixing block 16 is mounted in the bearing fixing block mounting port 15. A bearing 17 is mounted on the bearing fixing block 16. The brush module 19 combines the functions of the brush and the electrically connected end, and is integrated as a whole, which is convenient for replacing the brush after the brush is damaged. The difficulty of replacing the brush lies in electrically connecting the brush and the electrically connected end. The brush module 19 combines the two, which can avoid this step.

[0041] Further, the brush module 19 includes a brush head block 21, an elastic sheet 22, a connection end 23, a structure block 24, and a fixing lug 25. The structure block 24 is provided with the elastic sheet 22 near one side of the rotor 3. The other end of the elastic sheet 22 is provided with the brush head block 21 corresponding to the commutator 13. The side of the structure block 24 away from the rotor 3 is provided with the connection end 23. The structure block 24 is welded with the fixing lug 25 corresponding to the brush module 19. The structure block 24 is fixed on the rear end cover 7 by bolts.

[0042] Further, the commutation structure 5 includes the commutator 13 and two groups of brush head blocks 21. The two groups of brush head blocks 21 are respectively arranged on the upper and lower sides of the commutator 13 and are electrically connected with the commutator 13. When the rotating shaft 4 rotates, the commutator 13 rotates with the rotating shaft 4. The rotation of the commutator 13 changes the connection with the two groups of brush head blocks 21, so that the brush head block 21 is connected with the rotor winding 12 to change the direction of the rotor winding 12.

[0043] Working principle: when the device is used, if the bearing 17 of the device is damaged, it can be quickly replaced and maintained by the bearing fixing block 16. If the rotor winding 12 is damaged, the rear end cover 7 can be disassembled to replace the rotor 3 to replace the rotor winding 12. If the brush is damaged, the brush module 19 can be replaced to replace the brush. The device is convenient and fast to maintain.

[0044] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the present application, which should be limited only by the appended claims and their equivalents.

Claims

1. An easy-to-maintain household motor, comprising a housing (1), a stator (2) and a rotor (3) installed inside the housing (1), a rotating shaft (4) provided at the center of the rotor (3), a commutation structure (5) installed at one end of the rotating shaft (4), and the other end extending to the outside of the housing (1) as a working end, characterized in that: The front end cover (6) is welded on the shell (1) near the working end of the rotating shaft (4), and the detachable rear end cover (7) is installed on the shell (1) near the commutating structure (5).

2. A maintenance friendly household electrical machine according to claim 1, characterized in that: Two groups of connecting ports (8) are formed on the shell (1) near the rear end cover (7), and connecting lugs (9) corresponding to the connecting ports (8) are welded on the rear end cover (7), and the connecting lugs (9) and the connecting ports (8) are fixedly connected by bolts.

3. A maintenance friendly household electrical machine as claimed in claim 1, wherein: The stator (2) comprises two groups of permanent magnets (10), and two groups of fixing blocks are arranged on the inner wall of the shell (1), and the permanent magnets (10) are fixedly installed between the two groups of fixing blocks.

4. A maintenance friendly household electrical machine as claimed in claim 1, wherein: The rotor (3) comprises a rotating shaft (4), a rotor core (11), a rotor winding (12) and a commutator (13), the rotor core (11) is sleeved on the rotating shaft (4), the rotor core (11) is composed of a plurality of core pieces (14), the rotor winding (12) is composed of a wire coil wound on the rotor core (11), the commutator (13) is installed on one side of the rotor (3) near the commutating structure (5), and the commutator (13) is electrically connected with the rotor winding (12).

5. A maintenance friendly household electrical machine as claimed in claim 1, wherein: A bearing fixing block mounting port (15) corresponding to the rotating shaft (4) is formed on the front end cover (6), a bearing fixing block (16) is installed in the bearing fixing block mounting port (15), a bearing mounting circular hole (18) is formed in the center of the bearing fixing block (16), a threaded hole is formed on the outer side of the bearing fixing block (16), a bearing (17) is installed at the bearing mounting circular hole (18), the bearing (17) is fixedly installed on the bearing fixing block (16) by screws, and the bearing fixing block (16) is fixedly installed on the front end cover (6) at the position corresponding to the bearing fixing block mounting port (15) by bolts.

6. A serviceable household electrical machine according to claim 5, characterized in that: Two groups of brush module mounting ports (20) are formed on the rear end cover (7), two groups of brush modules (19) are installed in the brush module mounting ports (20), a bearing fixing block mounting port (15) is formed in the center of the rear end cover (7), a bearing fixing block (16) is installed in the bearing fixing block mounting port (15), and a bearing (17) is installed on the bearing fixing block (16).

7. A serviceable household electrical machine according to claim 6, characterized in that: The brush module (19) comprises a brush head block (21), an elastic sheet (22), a connecting end head (23), a structure block (24) and a fixing lug (25), the elastic sheet (22) is arranged on one side of the structure block (24) near the rotor (3), the other end of the elastic sheet (22) is provided with the brush head block (21) corresponding to the commutator (13), the connecting end head (23) is arranged on the side of the structure block (24) away from the rotor (3), the fixing lug (25) corresponding to the brush module (19) is welded on the structure block (24), and the structure block (24) is fixedly installed on the rear end cover (7) by bolts.

8. A serviceable household electrical machine according to claim 7, characterized in that: The commutating structure (5) comprises the commutator (13) and two groups of brush head blocks (21), and the two groups of brush head blocks (21) are arranged on the upper and lower sides of the commutator (13) and are electrically connected with the commutator (13).

Images