CN2191491Y

CN2191491Y - Automatic voltage regulating casing motion permanent-magnet-type mini-generator

Info

Publication number: CN2191491Y
Application number: CN 93213474
Authority: CN
Inventors: 俞日友
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-15
Filing date: 1993-05-15
Publication date: 1995-03-08
Anticipated expiration: 2003-05-15

Abstract

The utility model relates to an automatic voltage regulating casing motion permanent-magnet-type mini-generator which is composed of a casing, an arc-shaped magnet, a positioning pin, a spring and a winding of a stator iron-core, wherein, the positioning pin is fixed in the casing in the radial direction after the movable magnet is tightly pressed by the spring, the casing moves according to the rotary speed, the movable magnet does radial direction displacement on the positioning pin, and the air gap between the stator and the rotor is achieved to be regulated to regulate the output voltage. The design can automatically play the function of regulating voltage when the frequent speed variation causes voltage fluctuation in a mini-generator. The utility model has the advantages of simple structure, reliable work, low cost and convenient maintenance. The utility model is suitable for the illumination power source of various motor vehicles to use.

Description

Automatic voltage regulating casing motion permanent-magnet-type mini-generator

The utility model relates to a kind of improved microgenerator, the simple and easy motor vehicles mains lighting supply of particularly a kind of confession can automatic voltage regulation the moving magneto microgenerator of shell.

The hand tractor that generally use in existing rural area on the simple and easy motor tricycle, is by main frame power transmission generator amature rotary electrification as the microgenerator of mains lighting supply, supplies with lighting, generating with power between do not establish storage battery and stable-pressure device.But directly supply with the lighting illumination, because hand drags, simple and easy three cards, substantially travel in rural area inferior grade road and farm work, when meeting climbing and rugged muddy road in travelling, just need Reduced Speed Now for increasing power, because engine speed obviously descends, the generator amature rotary speed also obviously reduces, cause generator output voltage to decline to a great extent, make the lighting circuit undertension, power descends, the lamp luminescence dimness, the change of engine rotating speed is frequent, and lamp lighting is flickering, causes difficulty to driving.

The purpose of this utility model is that a kind of improved microgenerator will be provided, and it can and adjust output voltage automatically with the variation of engine rotating speed speed, and it is stable to reach sustaining voltage.

The purpose of this utility model is achieved in that this microgenerator comprises stator and rotor.Stator is made up of winding on porose stator core and the iron core, the stator of mesopore is inserted in line shaft, be fixed on the engine cabinet, rotor is by garden shape casing, alignment pin, spring, porose arc-shaped magnet is formed, and casing is fixed on the flywheel, on the alignment pin that casing inner wall is radially fixed, the arc-shaped magnet that trepanning is connected, by tensioned on the anchor point of alignment pin top end.

Air gap between stator and the rotor is during with the engine low-speed running, and the rated voltage of generating function output light fixture is when the engine faster rotational speed, arc-shaped magnet is under action of centrifugal force, overcome the tension force of spring, radially outwards displacement on alignment pin, the air gap between itself and stator strengthens.Magnetic resistance increases, and suppresses voltage and raises, and makes still in rated voltage.When engine speed reduced, centrifugal force weakened, and arc-shaped magnet is returned to the top end position under spring tension, and air gap between stator and the rotor sets back and puts, and kept output rated voltage.

The drawing explanation:

Fig. 1 is a kind of example structure cutaway view that is driven by flywheel of the utility model.

Fig. 2 is a kind of example structure cutaway view that is driven by line shaft of the utility model.

Fig. 3 is Fig. 1, Fig. 2 A-A ' face view.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 shows the structure and the installation site of the moving magneto microgenerator of this automatic voltage regulation shell.The stator core winding of mesopore penetrates line shaft, is fixed on the engine casing 6, and casing 5 is fixed on the flywheel 7, and the inwall of casing 5 is fixed locating stud 2 radially, behind porose arc-shaped magnet 3 holddown springs 1, is stretched in the top end of alignment pin 2.Stator core winding 4 is in concentric position with casing 5.

Fig. 1 shows the structure chart that rotor is directly installed on a kind of embodiment on the flywheel.The rammed mesopore stator core 4 of silicon steel sheet is fixed on the cabinet side of engine with securing member, and line shaft passes the stator core mesopore and drives the flywheel rotation.The inner concentric of flywheel is garden shape casing 5 fixedly, casing 5 usefulness iron plates are stamped to form, the radially fixed locating stud 2 of casing 5, be inserted in spring 1 on the alignment pin 2, the internal diameter of spring 1 is a bit larger tham alignment pin 2 diameters, the porose magnet 3 of arc, holddown spring 1 is inserted in alignment pin 2, the top end of alignment pin 2 has pin-and-hole, inserts pin rod, makes magnet 3 be positioned at the top end of alignment pin 2.

Fig. 2 shows directly the structure chart of a kind of embodiment that is driven by line shaft, and the garden heart of casing directly is fixed on the line shaft, and stator and rotor are in one heart, on the same plane.

The utlity model has following advantage, adopt the arc-shaped magnet centrifugal force that is connected synchronous rotary on the line shaft, to adjust stator, air gap between rotor, it is simple in structure to reach output voltage stabilization, reliable operation, cheap, easy to maintenance, be applicable to the usefulness of the mains lighting supply of various motor vehicles.

Claims

1, the moving magneto microgenerator of a kind of automatic voltage regulation shell is by stator core winding [4] and the casing [5] that rotate around stator core winding, arc-shaped magnet [3], alignment pin [2], spring [1] composition; It is characterized in that the arc-shaped magnet of pivot bush unit [3] is tensioned to by spring [1] on the top end anchor point of alignment pin [2] on the radially fixing alignment pin [2] of casing [5] inwall.