CN2081028U

CN2081028U - Portable electric torch with self-electric generator

Info

Publication number: CN2081028U
Application number: CN 90209797
Authority: CN
Inventors: 金舟军
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-07-05
Filing date: 1990-07-05
Publication date: 1991-07-17

Abstract

The utility model discloses a portable electric torch with a self-electric generator, belonging to the field of the household good. The utility model relates to an electric torch which can be operated by one hand, and can cause the unidirectional intermittent movement of doing work to be changed into the constant lightening of the bulb. The mechanical transmission mechanism causes one part of holding power of doing work to be changed into the self excitation single phase alternator or two direct current generators to generate the power. Simultaneously, the other part of doing work is changed into the function of a flywheel which is coaxial with an armature, and the function of the flywheel is stored up. When the holding power is not operated, the flywheel and the armature are decelerated together by the electromagnetic force, and one part function is changed into the electric energy. The inductance which is connected with the excitation winding in series causes the excitation current to reduce with the increase of the rotary speed of the armature to achieve the purpose of the constant electromotive force. The constant lighting power of the bulb is about 0.8W.

Description

Portable electric torch with self-electric generator

The utility model relates to a kind of by the portable electric torch of singlehanded grip work done generating as power supply, belongs to the daily living article field.

Known flashlight as a kind of portable lighting tool with battery as power supply.Battery is easily-consumed products and puts very easily leakage of electricity, corrosion for a long time that in torch this brings inconvenience just for particularly open-air use of family.

The utility model is attempted to provide a kind of one hand to operate, singlehanded grip work done can be transformed into the flashlight that makes the luminous electric energy of bulb steady, and promptly portable flashlight with electric generation by itself is fit to family and open-air the use.

The technical solution of the utility model is:

Machine driving of being made up of rocking bar, connecting rod, gear train, flywheel and energy storage mechanism will hold the power folk prescription and be transformed into lasting rotational kinetic energy to, intermittently rectilinear motion work done, passing to generator for electricity generation simultaneously, a part of kinetic energy is stored on the flywheel flywheel and the coaxial rotation of generator armature; In the non-power time interval of the power of holding, flywheel is transformed into electric energy with the kinetic energy that armature is slowed down, is stored on the flywheel by electromagnetic force, makes generator output uninterrupted.

Mainly, during by the pivot velocity variations, generator power output is stablized by regulating exciting curent by the power output steady circuit of forming with generator field winding series inductance.It is all proportional with armature rotating speed and exciting curent size to produce the armature generation electromotive force size of rotating in the magnetic field at exciting curent, and during the armature rotary speed, for example rotating speed increases, because the armature electromotive force is directly proportional with the armature rotating speed, electromotive force can increase; And when the armature rotating speed increases on the other hand, single-phase alternator or the two poles of the earth dc generator electromotive force frequency increase, and we adopt from excitatory mode, and the exciting curent frequency increases so, thereby the inductive impedance of connecting with field winding is increased, and then exciting curent reduces (magnetic field also reduces).Above-mentioned two factor actings in conjunction make the basic steady of electromotive force amplitude when the armature rotation speed change.

Bulb must be complementary with preceding described power supply.Because the generator armature rotating speed is at (being that the electromotive force frequency is about 25Hz), the basic steady of electromotive force amplitude about 25 revolutions per seconds, but the bulb steady is luminous.

The described portable flashlight with electric generation by itself of the utility model have can use lastingly, convenient carrying.When singlehanded grip about 30N, per second work done displacement is when the 3cm left and right sides, bulb steady luminous power is about 0.8W.Portable flashlight with electric generation by itself power can design according to the different users.

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

Fig. 1 is the portable flashlight with electric generation by itself structural representation of the utility model.

1---speculum 2---bulb 3---inductance 4---shell body

5---generator 6---flywheel 7---pinion 8---gear wheels

9---connecting rod 10---rocking bar 11---torsionsprings

Fig. 2 is the circuit diagram of the utility model embodiment 1, and generator is a single-phase alternator.

1---generator 2---field winding 3---bulb

4---inductance 5---diode bridge rectification

Fig. 3 is the circuit diagram of the utility model embodiment 2, and generator is the two poles of the earth dc generator.

1---generator 2---field winding 3---bulb 4---inductance

Embodiment 1, as Fig. 1, generator is a single-phase alternator.The gear train gearratio is about 30, pinches when holding a rocking bar 10 when per second like this, and flywheel 6 rotates with generator armature, and rotating speed is 30 revolutions per seconds.We choose flywheel 6 radiuses is about 2cm, and about 0.12 kilogram of weight is in order to reduce flywheel 6 volumes, flywheel 6 more handy lead are made material, when flywheel 6 and armature rotating speed are 30 revolutions per seconds, consider that simultaneously armature has certain rotary inertia, flywheel 6 and armature rotational kinetic energy can reach about 0.8J.11 reset responses of torsionspring.Fig. 2 is the circuit diagram of embodiment 1, when flywheel 6 and armature slow down together, has 50% kinetic energy to be converted into electric energy approximately, and rotating speed reduces to 70%, and inductance 24 is connected with field winding 22 and got stable generator 21 electromotive force.25 pairs of current commutates of diode bridge rectification make excitatory group 22 the sense of current constant.Bulb 23 and aforementioned power source coupling, power is about 0.8W, is complementary in order to make each element of circuit, can add a little shuntings, divider resistance in circuit.

Embodiment 2, generator are the two poles of the earth dc generator, Fig. 3 is the circuit diagram of embodiment 2, different is with embodiment 1: needn't use the rectification of diode pair exciting curent, in addition in order to make exciting curent generation magnetic field consistent with the remnant field direction of magnetic pole, armature is all rotated along a definite direction at every turn, and wherein a solution is by a back-moving spring between connecting rod 9 and rocking bar 10.

Claims

1, a kind of portable flashlight with electric generation by itself, comprise power supply, bulb, speculum, torch housing, it is characterized in that: power supply is made up of machine driving and energy storage mechanism, generator and power output steady circuit, and it is done singlehanded grip and changes the electric energy that makes the bulb stabilized illumination into.

2, by the described portable flashlight with electric generation by itself of claim 1, it is characterized in that: generator is single-phase alternator or the two poles of the earth dc generator, and all is from excitatory; Power output steady circuit mainly is made up of the inductance of connecting with the generator field winding.

3, by the described portable flashlight with electric generation by itself of claim 1, it is characterized in that: machine driving and energy storage mechanism are made up of rocking bar, connecting rod, gear train, flywheel, and flywheel links to each other with generator armature is coaxial, and the energy major part is stored on the flywheel.

4, by the described portable flashlight with electric generation by itself of claim 1, it is characterized in that: bulb and power supply are complementary.