CN2386571Y

CN2386571Y - Brushless DC. electric motor for electric power vehicle

Info

Publication number: CN2386571Y
Application number: CN 99229383
Authority: CN
Inventors: 居济庆; 张文新; 毕再兴
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-07
Filing date: 1999-09-07
Publication date: 2000-07-05
Anticipated expiration: 2009-09-07

Abstract

The utility model relates to a brushless DC electric motor for electric power vehicles, which is provided with a rotor, and a stator, wherein, the rotor is composed of a casing, and a permanent magnet; the stator is composed of a winding, a stator iron, a supporting frame, and a main shaft; the middle section of the main shaft is provided with shaft holes, and two sides of the main shaft are provided with screw threads; two sides of the shaft holes are provided with two radial holes which are communicated with the shaft holes; a wire outgoing board is installed on the supporting frame; leading wires which are positioned on the wire outgoing board are led out from the shaft holes of the main shaft and the two radial holes; an end surface of the outer side of the casing is provided with an annular step; the outer side of the step is fixedly connected with more than three connecting pieces. So the utility model has the advantages that the intensity of the main shaft is high, the leading wire can not be easily damaged, and the installation of wheel rims is convenient.

Description

Electric boosted automobile-used brshless DC motor

The utility model relates to a kind of permanent-magnet brushless DC electric machine, relates in particular to a kind of electric boosted automobile-used brshless DC motor.

Development along with Moped Scooter, the permanent-magnet brushless DC electric machine kind that is used to drive vehicle using motor is more, but this class permanent-magnet brushless DC electric machine all has housing, rotor and winding that permanent magnet is formed, stator core, support, the stator that main shaft constitutes, but the lead-in wire that power line in the machine on the outlet board and control line constitute is all drawn from the centre bore of main shaft one end, because the both sides of main shaft are connecting portion, the one side has the intensity that will lower main shaft behind the centre bore, go between simultaneously draw from main shaft one end after, be exposed to the outside, there is not any protector, lead-in wire is damaged easily or is hung and hinders and cause power line and control line to damage, and influences the cruising of vehicle.Secondly owing to there is not the position of direct mounting rim on the shell of motor, wheel rim is installed very inconvenient, also is difficult for guaranteeing the same Che Neidu of shell and wheel rim, and in use wheel rim is difficult for adjusting.

The purpose of this utility model provides a kind of main axe intensity height, and it is not fragile to go between, and the electric boosted comparatively easily automobile-used brshless DC motor of mounting rim.

For the technical scheme that achieves the above object is: a kind of electric boosted automobile-used brshless DC motor, rotor with housing, permanent magnet formation, the stator that winding, stator core, support, main shaft constitute, shaft-cup, housing link to each other with main shaft by bearing respectively, it is characterized in that: the stage casing that a, both sides have the main shaft of screw thread has axis hole, and there are two radial holes that connect with it the axis hole both sides, and outlet board is contained on the support, and the lead-in wire on the outlet board is drawn from the axis hole and two radial holes of main shaft; The outside end face of b, housing has a ring-shaped step, and the step outside is fixed with the connector more than three.

The utility model is owing to be provided with axis hole in the electric machine main shaft stage casing, and two radial holes that connect with axis hole are arranged, so it is solid that the connecting portion of main shaft both sides is, not only improve main axe intensity, lead-in wire can be drawn from the axis hole and two radial holes of main shaft simultaneously, and lead-in wire is not the outermost end that main shaft is set, and lead-in wire then can be connected with connector from the shock absorber of vehicle frame is inboard, avoid going between bumping and hang damage and cause damage, guarantee the cruising of vehicle.Again because the outside end face of housing is provided with step and the connector that matches with wheel rim, make general steel ring be installed on the housing very easily, be convenient to produce in enormous quantities, also guarantee the axiality of steel ring and housing simultaneously, also be convenient in use steel ring be adjusted.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described.

Fig. 1 is a kind of structural representation of electric boosted automobile-used brshless DC motor of the present utility model.

Fig. 2 is the A-A cross-sectional schematic of Fig. 1.

Fig. 3 is the structural representation of punching in the stator core.

Shown in Fig. 1-2, electric boosted automobile-used brshless DC motor of the present utility model, rotor with housing 9, permanent magnet 10 formations, permanent magnet 10 is bonded on the housing 9, and by the stator that winding 12, stator core 11, support 16, main shaft 1 constitute, stator core 11 has several punchings to be formed by stacking, winding 12 is inlaid on the stator core 11, stator core 11 is installed on the support 16, and support 16 closely cooperates with main shaft 1, and the number of pole-pairs of permanent magnet 10 is corresponding with the number of pole-pairs of stator core 11.Shaft-cup 13, housing 9 link to each other with main shaft 1 by bearing 14 respectively, make energising winding 12 produce magnetic reaction fields on stator, with permanent magnetic field interaction generation torque actuated housing 9 rotations of rotor.The stage casing of all threaded main shaft 1 in both sides has axis hole 1-1, and there are two radial hole 1-2,1-3 that connect with it this axis hole 1-1 both sides, outlet board 15 is contained on the

support

16,2 axis hole 1-1 and two radial hole 1-2,1-3 from the stage casing of main shaft 1 of lead-in wire that power line on the outlet board 15 and control line constitute draw, in two radial hole 1-2, the 1-3 outlet sheath 4 is housed also, therefore improved line position, avoided going between and 2 bump and hang and cause damage.On the outside end face 9-1 of housing 9 a ring-shaped step 9-2 is arranged, just the endoporus with steel ring 17 matches, and the step 9-2 of the outside end face 9-1 outside is welded with the uniform connector more than three 8, this connector 8 can be illustrated in figure 1 as bolt, the setting of this connector 8 is also corresponding with the connecting hole of steel ring 17, steel ring 17 is easy for installation, can reach instructions for use.

For making full use of permanent magnetic field, improve the starting performance of motor, improve electric efficiency, as shown in Figure 3, in each punching in the stator core 11, between every adjacent wire casing 11-1, have branch magnetic elongated slot 11-2.

As shown in Figure 1, electronic function powered vehicle is travelled, can conveniently brake simultaneously the housing that rotates, step 9-2 inboard on housing 9 outside end face 9-1, have with housing 9 and cast brake drum 5 for one, end cap 3 be pressed on main shaft 1 upper end cover, 3 end faces and brake drum 5 end faces gapped, make that end cap 3 can not produce wearing and tearing with brake drum 5 end faces when travelling, have through wires hole 3-1 on the end cap 3, lead-in wire 2 is drawn from the through wires hole 3-2 of end cap 3.As shown in Figure 2, be provided with the hoof block assembly that the hoof piece 6, spring 20, bearing pin 7, cam 18 of band friction plate constitutes in the brake drum 5, two hoof pieces 6 are hinged by a pivot pin 7 and end cap 3, and two hoof pieces 6 are equipped with back-shaped spring 20, the cam 18 that is arranged on 6 of two hoof pieces is hinged on end cap 3, whole brake mechanism is arranged on the housing 9, when needing braking, deenergization, by cam 13 spreading hoof pieces 6, make the interior wall friction of friction plate 19 and housing 5, housing 9 is stopped operating, brake structure is simple, and is easy to operate.

For make dust and rainwater be difficult for entering the braking housing 5 in, the termination of end cap 3 have towards crimp 3-2.

Claims

1, a kind of electric boosted automobile-used brshless DC motor, rotor with housing (9), permanent magnet (10) formation, the stator that winding (12), stator core (11), support (16), main shaft (1) constitute, shaft-cup (13), housing (9) link to each other with main shaft (1) by bearing (14) respectively, it is characterized in that:

The stage casing that a, both sides have the main shaft (1) of screw thread has axis hole (1-1), and there is two radial holes (1-2), (1-3) that connects with it axis hole (1-1) both sides, outlet board (1 5) is contained on the support (16), and the lead-in wire (2) that is connected on the outlet board (15) is drawn from the axis hole (1-1) of main shaft (1) and two radial holes (1-2), (1-3);

The outside end face (9-1) of b, housing (9) has a ring-shaped step (9-2), and step (9-2) outside is fixed with the connector (8) more than three.

2, electric boosted automobile-used brshless DC motor according to claim 1 is characterized in that: have branch magnetic elongated slot (11-2) in each punching of described stator core (11) between every adjacent wire casing (11-1).

3, electric boosted automobile-used brshless DC motor according to claim 1, it is characterized in that: step (9-2) inboard of housing (9) outside end face (9-1), the brake drum 5 that becomes one with housing (9) is arranged, be pressed on its end face of end cap (3) on the main shaft (1) and the end face of brake drum (5) and have the gap, through wires hole (3-1) is arranged on the end cap (3), lead-in wire (2) is drawn from through wires hole (3-1), be provided with the hoof piece (6) of band friction plate (19) in the brake drum (5), spring (20), bearing pin (7), the hoof block assembly that cam (18) constitutes, two hoof pieces (6) are hinged by pivot pin (7) and end cap (3), and spring (20) is housed on two hoof pieces (6), and the cam (18) that is arranged between two hoof pieces (6) is hinged on end cap (3).

4, electric boosted automobile-used brshless DC motor according to claim 3 is characterized in that: the termination, outer end of end cap (3) has the crimp (3-2) towards brake drum 5 one sides.