CN2438314Y

CN2438314Y - Fractional horse power low-voltage DC permanent-magnet machine for grass cutter

Info

Publication number: CN2438314Y
Application number: CN 00230671
Authority: CN
Inventors: 胡锦孙
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-15
Filing date: 2000-08-15
Publication date: 2001-07-11
Anticipated expiration: 2010-08-15

Abstract

The utility model relates to a fractional horse power low-voltage DC permanent-magnet motor for a grass cutter. Two cavity bodies are formed by a casing, wherein, a motor set is installed in the front cavity body, a radiator fan is installed in the back cavity body, and the front cavity body and the back cavity body are communicated and are connected into integration by a motor shaft. The utility model has the characteristics of small size, big output power, good radiation effect, small no-load current, high rotary speed, small wattless loss and low noise, and is very favorable to environmental protection; the utility model is a green machine for afforestation of city and beautification.

Description

The fractional horse-power low-voltage direct magneto of mower

The utility model relates to a kind of mowing low-voltage direct magneto.

Existing mower is the gasoline mower, as everyone knows, because gasoline is a kind of combustible and explosive articles, very dangerous when depositing, this mower noise is big, the machinery that backs on the body promotes greatly, heat is high, fault is many, the physical and mental health that this has had a strong impact on staff and peripheral personnel, and the oil smoke that emits simultaneously can cause great pollution to environment again.

The purpose of this utility model be to provide a kind of in light weight, noise is little, fault-free, low-voltage direct magneto that safety is good.

The purpose of this utility model is that following technical scheme is realized: it is by shell, and rotor and stator constitute, and form two cavitys by shell, in preceding cavity, group of motors is installed, radiator fan is installed in the rear chamber, is communicated with each other between preceding cavity and rear chamber, and fuses by motor shaft.

The utility model motor has that volume is little, power output is big, good heat dissipation effect, no-load current is little, rotating speed is high, reactive loss is little, noise is little characteristics, and is very favourable to environmental protection, is the green machine that urban afforestation beautifies.

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

In order to make the utility model structure clear more complete, be described further below in conjunction with accompanying drawing.

As shown in the figure: the utility model is combined by preceding cavity A and rear chamber B, and preceding cavity A is merged by drive end bearing bracket 15 and rear end cap 5 and forms.Rear end cap bearing 6 is installed in the rear end cap 5 successively, commutator 24, rotor core 10 and drive end bearing bracket bearing 16, the end face of rear end cap 5 is " ten " font, outside commutator 24, be positioned at the bifurcation inboard of " ten " font of rear end cap 5, carbon brush 7 is installed, carbon brush support 9 is housed outside carbon brush 7, between carbon brush 7 and rear end cap 5, be provided with brush holder spring 8, protective cover 2 is housed outside rear end cap 5, on protective cover 2, be provided with motor radiating air admission hole 4 and power line hole 1, be provided with rubber washer 3 at

protective cover

2 and 5 of rear end caps, on rotor core 10, be evenly distributed with ventilation hole 27, and it is around with coil 11, before outside rotor core coil 11, be provided with permanent-magnet steel or magnetic shoe (being stator) 13 between rear end cap, outside permanent-magnet steel or magnetic shoe 13, be provided with stator casing 12.Preceding cavity A and rear chamber B fuse by connecting screw 25.Motor radiating centrifugation blade 18 is housed in rear chamber B; Wherein rear end cap bearing 6, commutator 24, rotor core 10, drive end bearing bracket bearing 16 and centrifugation blade 18 are installed on the motor earth's axis 14 jointly, the front end of the motor earth's axis 14 is equipped with motor and mower trace connector 20 movingly, this connector 20 is provided with square interface 21 with the trace active connection place, and motor rear chamber shell 17 is 22 with the connector of mower mobile jib; On rear chamber shell 17, have motor radiating air vent 19, on rear chamber shell 17, also be provided with the connecting hole 23 of hanging handle be connected with the mower mobile jib fix and position screw 26.

The utility model motor is by the dc source of power line 1 input 12VDC, pass to commutator 24 through four abrasion performance carbon brush 7, enter rotor coil 11 again, in rotor coil 11, produce the loop works electric current, produce the magnetic induction intensity of 125mT simultaneously on the surface of rotor; Under the effect of the magnetic field of stator magnetic shoe 13, the power of tearing open that pushes away of generation is rotated rotor in magnet steel 13.Because this motor power output is big, volume is little, and the current density of conductor changes with the variation of radiating condition, so this motor runs up air discharging and radiating by centrifugation blade.Because is totally-enclosed substantially from mobile jib connector 22 up between the mowing blade, so air is entered by motor radiating air admission hole 4, several louvres 27 in rotor and the gap in rotor and the magnet steel, several ventilation holes by drive end bearing bracket 15 in the middle of centrifugation blade 18 by centrifugal and discharge by motor radiating air vent 19, reduce the temperature rise of motor, improved the power of motor.Concentricity of this motor and perpendicularity high level error are little, so the no-load current of this motor is little, the rotating speed height, and reactive loss is little, and noise is also very little, and is very favourable to environmental protection.

Claims

1. the fractional horse-power low-voltage direct magneto of a mower, by shell, rotor and stator constitute, it is characterized in that: form two cavitys by shell, in preceding cavity, group of motors is installed, the motor radiating centrifugation blade is installed in the rear chamber, is communicated with each other between preceding cavity and rear chamber, and fuses by motor shaft.

2. the fractional horse-power low-voltage direct magneto of mower according to claim 1, it is characterized in that: preceding cavity is merged by drive end bearing bracket and rear end cap and forms, the rear end cap bearing is installed in the rear end cap successively, commutator, rotor core and drive end bearing bracket bearing, the end face of rear end cap is " ten " font, outside commutator, be positioned at the bifurcation inboard of " ten " font of rear end cap, carbon brush is installed, the carbon brush support is housed outside carbon brush, between carbon brush and rear end cap, be provided with brush holder spring, protective cover is housed outside rear end cap, on protective cover, be provided with motor radiating air admission hole and power line hole, between protective cover and rear end cap, be provided with rubber washer, on rotor core, be evenly distributed with ventilation hole, and it is around with coil, before outside the rotor core coil, be provided with permanent-magnet steel or magnetic shoe between rear end cap, outside permanent-magnet steel or magnetic shoe, be provided with stator casing.

3. the fractional horse-power low-voltage direct magneto of mower according to claim 1 and 2, it is characterized in that: preceding cavity and rear chamber fuse by connecting screw; Rear end cap bearing, commutator, rotor core, drive end bearing bracket bearing and centrifugation blade are installed on the motor earth's axis jointly, the front end of the motor earth's axis is equipped with motor and mower trace connector movingly, on the rear chamber shell, have the motor radiating air vent, on the rear chamber shell, also be provided with and the connecting hole of hanging handle and the screw that fixes and positions that is connected with the mower mobile jib.

4. the fractional horse-power low-voltage direct magneto of mower according to claim 1 and 2, it is characterized in that: this connector and trace active connection place are provided with square interface.

5. the fractional horse-power low-voltage direct magneto of mower according to claim 3, it is characterized in that: this connector and trace active connection place are provided with square interface.