CN201536279U

CN201536279U - Direct current motor

Info

Publication number: CN201536279U
Application number: CN2009202552701U
Authority: CN
Inventors: 郭维锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-20
Filing date: 2009-11-20
Publication date: 2010-07-28
Anticipated expiration: 2019-11-20

Abstract

The utility model relates to a direct current motor, comprising a motor frame, a shell body, a stator, a rotator, a rotation shaft and a reduction box. The shell body is fixed on the motor frame, the stator is fixed inside the shell body, the rotation shaft and the rotator are fixedly connected, and are inserted into the stator inside the shell body, and the rotation shaft is also connected with a commutator and a brush. One end of the rotation shaft is connected with the reduction box in a driving way, and the other end of the rotation shaft is fixedly connected with a fan. The rotator is twined by a winding, a shielding ring is arranged between the shell body and the stator, and is fixedly connected onto the peripheral wall of the stator. The direct current motor has the advantages of high utilization efficiency and long service life.

Description

Direct current machine

Technical field

The utility model belongs to machine field, relates in particular to a kind of direct current machine.

Background technology

General direct current machine, owing to there is not magnetic shielding device, when the motor operate as normal, the magnetic flux that stator winding produces is easy to leak into the motor outside, makes the magnetic flux of stator winding can not concentrate by the rotor winding, causes the waste of magnetic flux, electric efficiency reduces, the motor wind that fan drives when operation can not blow in the another side of motor, thereby the temperature of motor is risen, and long-time continuous is used more may shorten electrical machinery life.

Summary of the invention

The purpose of this utility model is to provide the direct current machine of a kind of efficient height, long service life.

In order to achieve the above object, the technical solution of the utility model is: a kind of direct current machine, comprise frame, casing, stator, rotor, rotating shaft and reduction box, casing is fixedly mounted on the frame, stator is fixedly mounted in the casing, rotating shaft be inserted into casing after rotor is fixedlyed connected in stator in, also be fitted with commutator and brush in the rotating shaft, one end and the reduction box of rotating shaft are in transmission connection, the other end of rotating shaft is fixedlyed connected with fan, be wound with winding on the rotor, also be provided with shading ring between described casing and the stator, shading ring is fixedly connected on the periphery wall place of stator.

Described casing is made up of housing, protecgulum and bonnet, and housing is fixedlyed connected with bonnet with protecgulum respectively.

The outer cover of described casing is equipped with windshield, and protecgulum one end of casing stretches out from windshield, and the radial clearance between casing and the windshield forms the air port.

Described windshield is provided with first air inlet.

The bonnet of described casing is provided with second air inlet.

After adopting said structure, owing to increased magnetic shielding device, make the stator of magnetic conduction combine with non-magnetic casing by magnetic shielding device, the magnetic flux that can prevent stator winding under the operate as normal of motor drains to the outside, make the flux concentrating of stator winding pass through the rotor winding, thereby reduced the consumption of electromagnetism, not only make efficiency of motor improve, also can make this motor continuous operation, and prolong the useful life of motor.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the right view of Fig. 1.

Embodiment

The embodiment that provides below in conjunction with accompanying drawing is described in further detail the utility model.

As Fig. 1, shown in 2, a kind of direct current machine of the present utility model, comprise frame 1, casing 2, stator 3, rotor 4, rotating shaft 5 and reduction box 6, casing 2 is fixedly mounted on the frame 1, stator 3 is fixedly mounted in the casing 2, rotating shaft 5 be inserted into casing 2 after rotor 4 is fixedlyed connected in stator 3 in, also be fitted with commutator 9 and brush 10 in the rotating shaft 5, one end and the reduction box 6 of rotating shaft 5 are in transmission connection, the other end of rotating shaft 5 is fixedlyed connected with fan 7, be wound with winding 8 on the rotor 4, also be provided with shading ring 11 between described casing 2 and the stator 3, shading ring 11 is fixedly connected on the periphery wall place of stator 3.

As shown in Figure 1, described casing 2 is made up of housing 2-1, protecgulum 2-2 and bonnet 2-3, and housing 2-1 is fixedlyed connected with bonnet 2-3 with protecgulum 2-2 respectively, the assembling of convenient like this motor.

As shown in Figure 1, 2, in order to guarantee the well-ventilated in the casing 2, help motor radiating more, keep motor stable, the outer cover of described casing 2 is equipped with windshield 12, and protecgulum 2-2 one end of casing 2 stretches out from windshield 12, and the radial clearance between casing 2 and the windshield 12 forms air port 13.

As shown in Figure 1, 2, unimpeded for what guarantee to ventilate, reduce temperature in the casing 2, described windshield 12 is provided with the first air inlet 12-1.

As shown in Figure 1, 2, the bonnet 2-3 of described casing 2 is provided with the second air inlet 2-3-1, also makes can guarantee the circulation of ventilating in the casing 2, is more conducive to heat radiation.

When the utility model uses, owing to increased magnetic shielding device, make the stator of magnetic conduction combine with non-magnetic casing by magnetic shielding device, the magnetic flux that can prevent stator winding under the operate as normal of motor drains to the outside, make the flux concentrating of stator winding pass through the rotor winding, thereby reduced the consumption of electromagnetism, not only make efficiency of motor improve, also can make this motor continuous operation, and prolong the useful life of motor.

Claims

1. direct current machine, comprise frame (1), casing (2), stator (3), rotor (4), rotating shaft (5) and reduction box (6), casing (2) is fixedly mounted on the frame (1), stator (3) is fixedly mounted in the casing (2), rotating shaft (5) be inserted into casing (2) after rotor (4) is fixedlyed connected in stator (3) in, also be fitted with commutator (9) and brush (10) in the rotating shaft (5), one end of rotating shaft (5) and reduction box (6) are in transmission connection, the other end of rotating shaft (5) is fixedlyed connected with fan (7), be wound with winding (8) on the rotor (4), it is characterized in that: also be provided with shading ring (11) between described casing (2) and the stator (3), shading ring (11) is fixedly connected on the periphery wall place of stator (3).

2. direct current machine according to claim 1 is characterized in that: described casing (2) is made up of housing (2-1), protecgulum (2-2) and bonnet (2-3), and housing (2-1) is fixedlyed connected with bonnet (2-3) with protecgulum (2-2) respectively.

3. direct current machine according to claim 2, it is characterized in that: the outer cover of described casing (2) is equipped with windshield (12), and protecgulum (2-2) end of casing (2) stretches out from windshield (12), and the radial clearance between casing (2) and the windshield (12) forms air port (13).

4. direct current machine according to claim 3 is characterized in that: described windshield (12) is provided with first air inlet (12-1).

5. direct current machine according to claim 2 is characterized in that: the bonnet (2-3) of described casing (2) is provided with second air inlet (2-3-1).