CN2236689Y

CN2236689Y - Portable multifunctional charger

Info

Publication number: CN2236689Y
Application number: CN95236858U
Authority: CN
Inventors: 曾寿安; 王兰迪
Original assignee: TIANBO ELECTRONIC FACTORY ZHONGNAN RADIO FACTORY
Current assignee: TIANBO ELECTRONIC FACTORY ZHONGNAN RADIO FACTORY
Priority date: 1995-05-25
Filing date: 1995-05-25
Publication date: 1996-10-02
Anticipated expiration: 2005-05-25

Abstract

The utility model relates to a portable charger having the functions of charging, lighting and a radio, comprising a front cover, a bolt, a base, a battery barn, a battery box cover and a charging circuit. The utility model is characterized in that an axle sleeve with an opening and a rotary bolt with built-in type are arranged on the base; the bolt and the battery box cover are in the same surface; an automatic switching device and a special switching charging box are arranged in the battery barn. The charger has simple structure, low cost, small size and more functions; the rotatable bolt is stored in a casing at other times and has convenient carrying; the utility model has the functions of charging degree display, short circuit protection, overheating protection function and overcharge protection in the charging process.

Description

The pocket multifunctional charger

The utility model relates to a kind of pocket charger with charging, illumination and function of radio receiver.

Existing charger generally adopts transformer step-down mode, and this kind charger volume is big, heavy cost height, and inconvenience is carried.The charger that adopts capacitance decompression is also arranged, and volume, weight reduce to some extent, but because the restriction of electric current can only be given the multiple batteries serial connection charge; As when taking off a batteries, charging circuit will disconnect and can not charge; Also there is safety problem simultaneously,, under at electriferous state, from charger, takes off or load onto battery, the danger that can get an electric shock because capacitor step-down and high-voltage fence are not isolated.Just in case the decompression capacitor puncture short may cause that charger burns.Above-mentioned two class chargers do not have the function of illumination and radio reception, so function singleness.

The purpose of this utility model is to overcome above-mentioned defective, and a kind of compact conformation, safety, convenience are provided, and can directly insert 220 volts of sockets of family to 5 ^#Or 7 ^#The pocket multifunctional charger of battery charge.

The technical solution of the utility model: the pocket multifunctional charger is made up of printed board, latch, base, battery compartment, battery case lid and the charging circuit of shell, band element, it is characterized in that being that base is provided with split bush and built-in rotation latch, its rotation latch and battery case lid design are on same one side;

This charger adopts multiple batteries serial connection charge mode, but between the anodal reed of every batteries and the negative spring special auto switching device is set in battery compartment.Promptly behind the battery of packing into, this device leaves automatically, and connects charging by battery, as when taking off a batteries, and the negative spring on this moment battery location contacts with anodal reed automatically, still keeps the charging circuit connection; The structure of auto switching device is that the battery compartment back on base has cannelure, places the external part of the negative spring in the battery compartment in the cannelure, and the interior anodal reed of the external part of negative spring and battery compartment touches mutually.

Be provided with 7 in the battery compartment ^#The special use switching charging box of battery, they are 7 years old ^#The outer color size and the battery compartment of the special-purpose switching charging of battery box match, and in the charging box longitudinal center's dividing plate are arranged, and are convenient to place single battery.

Shell is provided with three luminous pores and uniform loudspeaker sound hole, and loudspeaker sound hole place is stained with one super broad type loudspeaker, and its loudspeaker are connected by the circuit in lead and the printed board.

The printed board of band element is designed to the printed board with charging, illumination and function of radio receiver element, and printed board is provided with spot light lamp bulb, two luminous utmost point pipes and a power supply and indicates other electron component in luminous tube and the circuit.

The volume of this charger is not more than 105 * 40 * 20mm, and promptly overall dimension length * wide * height 〉=96 * 36 * 18mm is to≤105 * 40 * 20mm.The charging circuit of this charger is designed to have charging, the charging circuit of illumination and function of radio receiver, and the circuit of its radio reception part adopts micro-type receiver circuit and power amplifier integrate circuit; The circuit of live part is to adopt bridge rectifier and connected as the PTC device of short circuit and overtemperature protection, at bridge rectifier (D at the ac input end of charging circuit ₁～D ₄) and the PTC device between be provided with step-down current limiting capacitance C ₁With bleeder resistance R1, its resistance R ₁With capacitor C ₁In parallel.Simultaneously, comprise a surge shunt capacitance C in the charging circuit ₂, the inrush current limitation resistance R ₂And two dropping resistor (R ₃, R ₄), at rechargeable battery (E ₁, E ₂) two ends respectively in parallel light-emitting diode (D ₅, D ₆) and by K switch ₁The spot light lamp bulb S and the micro-type receiver integrated circuit (IC) of control.

Below in conjunction with accompanying drawing the technical solution of the utility model is described in detail.

Fig. 1 is the novel assembly structure schematic diagram of this reality;

Fig. 2-a is a front schematic view of the present utility model;

Fig. 2-b is an A-A cross-sectional view of the present utility model;

Fig. 2-c is a schematic rear view of the present utility model;

Fig. 3-a is that the auto switching device disconnects schematic diagram (battery of packing into) in the battery compartment;

Fig. 3-b is that the auto switching device is connected schematic diagram (taking off battery) in the battery compartment;

Fig. 4 is special-purpose switching charging box structural representation;

Fig. 5 is the electrical schematic diagram of the utility model live part.

Referring to Fig. 1, the pocket multifunctional charger is made of the printed board 3 of locating shell 1, ultrathin loudspeaker 2, band element, rotation latch 4, base 5, battery case lid 6, split bush 7 and battery compartment 8; Split bush 7 and battery compartment 8 are arranged on the base 5.

Rotation latch 4 is to be made of two metal bolt sheets and plastics rotating shaft, and promptly two plug blades are to be fixed on the rotating shaft two ends to form, and rotation latch 4 is to embed in the split bush 7 by rotating shaft.Base 5 is provided with the open slot into built-in rotation plug blades, and the rotation plug blades is ensconced in the open slot at ordinary times, when needing charging, with hand plug blades is pulled out 90 degree, can insert easily in 220 volts of skewer seats (as depicted in figs. 1 and 2); Rotation latch 4 and battery case lid 6 designs are on same one side.

Special auto switching device is set between the anodal reed 14 of every batteries 13 and the negative spring 10 on the battery compartment 8 in the base 5: concrete structure is that battery compartment 8 backs on base 5 have two cannelures, place the extension of negative spring 10 in the cannelure, the external part of negative spring 10 touches (as shown in figures 1 and 3) mutually with anodal reed 14.Behind the battery of packing into, this device leaves automatically, connects charging (shown in Fig. 3-a) by battery 13; As when taking off a batteries 13, the external part of negative spring 10 contacts with anodal reed 14 automatically, and its charging circuit still keeps connecting (shown in Fig. 3-b).Hence one can see that, and this charger both can be given the charging of two batteries, also can charge to single battery.

The printed board 3 of band element is designed to the printed board with charging, illumination and function of radio receiver, in printed board 3, be provided with other electron component in the light-emitting diode 9 of spot light lamp bulb 11, two level of charge indications and power supply indication luminous tube and the circuit, below printed board 3, be provided with and rotate latch 4 corresponding metal spring leafs, when the rotation latch pulls out 90 when spending, the rear end pin sheet of plug blades contacts with reed and connects circuit.Whole printed board places in the fitting recess of base 5.

Shell 1 is provided with three luminous pores and uniform loudspeaker sound hole, its ultrathin loudspeaker 2 are fixed on shell 1 sound hole place, loudspeaker 2 are connected by the circuit in lead and the printed board 3, and three luminous pores are corresponding with two light-emitting diodes 9 and a power supply indication luminous tube in the printed board 3.

Battery compartment 8 general placements 5 ^#Battery, as adorn 7 ^#During battery, need join 7 ^#The special-purpose switching charging of battery box (as shown in Figure 4), the overall dimension and the battery compartment 8 of its special-purpose switching charging box match, in the charging box longitudinal center's dividing plate is arranged, an end of charging box is an opening, and other end end is provided with the reed that touches mutually with the anodal reed 14 of battery compartment 8.Need fill 7 ^#During battery, battery is placed in the special-purpose switching charging box by polarity, then the charging box is placed in the storehouse, pond 8 promptly chargeablely, charging finishes the charging box taken out together and gets final product.

Volume length * wide * the height of whole charger is not more than 105 * 40 * 20mm.

The charging circuit design of this charger has the circuit of charging, illumination and function of radio receiver, and the circuit of its radio reception part is to adopt micro-type receiver circuit and power amplifier integrate circuit (figure slightly); The circuit of charging and illumination section is to adopt bridge rectifier (D ₁～D ₄), connected as the PTC device of short circuit and overtemperature protection, its PTC device and bridge rectifier (D at the ac input end of charging circuit ₁～D ₄) between be provided with step-down current limiting capacitance C ₁With bleeder resistance R ₁, resistance R ₁With capacitor C ₁In parallel.Dc output end at bridge rectifier is parallel with surge current shunt capacitance C ₂, the power supply of also connecting indication luminous tube D ₇, luminous tube D ₇A two ends shunt resistance R in parallel ₂Rechargeable battery E ₁And E ₂The employing series system connects, and dropping resistor R has connected respectively at its two ends ₃And R ₄, E ₁And resistance R ₃And battery E ₂And resistance R ₄Two ends in parallel respectively show and the light-emitting diode (D of shunting that overcharges as level of charge ₅, D ₆) (as shown in Figure 5), as rechargeable battery (E ₁, E ₂) when sufficient; the voltage sum at dropping resistor and rechargeable battery two ends must not conducting less than 1.6V, light-emitting diode; light-emitting diode does not work or is little bright; when the rechargeable battery full charge, the voltage sum at dropping resistor and rechargeable battery two ends is greater than 1.8, light-emitting diode conducting and shinny; this moment, the charging current major part was shunted by luminous tube; the electric current of battery of flowing through reduces automatically, thereby plays the function of additives for overcharge protection, has also shown level of charge.At battery E ₁And E ₂Two ends are also in parallel by K switch ₁The spot light lamp bulb S and the micro-type receiver integrated circuit (IC) as the torch for illumination function of control.K switch in the circuit ₂And K ₃Be respectively the auto switching device of every batteries both positive and negative polarity reed, as take off battery E ₁, K ₁Demand working, luminous tube D ₅Do not work, but entire circuit still keeps to battery E ₂Charging.

In sum; this charger construction is simple; cost is low, volume is little, function is many; latch is rotatable; be hidden at ordinary times in the casing, be easy to carry, performance is safe and reliable; can give single battery or multiple batteries charging, have level of charge demonstration, overheat short circuit protection and overcharge protection in the charging process.

Claims

1, a kind of pocket multifunctional charger, it comprises printed board (3), latch (4), base (5), electric storehouse lid (6) and the charging circuit of protecgulum (1), band element, it is characterized in that:

A, described base (5) is provided with split bush (7) and built-in rotation latch (4), base (5) bottom has the open slot that is used for built-in rotation latch (4), its rotation latch (4) embeds in the split bush (7) and 90 ° of rotations of energy, described rotation latch (4) is to be made of two plug blades and plastics rotating shaft, two plug blades are fixed on plastics rotating shaft two ends, battery compartment (8) in the described base (5) is provided with the auto switching device, promptly have two cannelures at the back of battery compartment (8), place the external part of the negative spring (10) in the battery compartment (8) in its cannelure, anodal reed (14) in the external part of negative spring (10) and the battery compartment (8) touches mutually

The printed board of B, described band element (3) is designed to have the printed board of charging, illumination and radio reception circuit element, its printed board (3) is provided with light-emitting diode (9) and a power supply of spot light lamp bulb (11), two level of charge indications and indicates other electron component in luminous tube and the circuit, below printed board (3), be provided with and rotate the corresponding reed of latch (4), whole printed board (3) places on the base (5)

C, described protecgulum (1) are provided with three luminous pores and uniform loudspeaker sound hole, and loudspeaker sound hole place is fixed with its loudspeaker of ultrathin loudspeaker (2) (2) and connects by the circuit in lead and the printed board (3),

Be provided with the special-purpose switching charging of 7# battery box in D, the described battery compartment (8), its special-purpose switching charging box overall dimension and battery compartment (8) match, and in the special-purpose switching charging box longitudinal center's dividing plate are arranged, and an end of charging box is an opening, and the other end is provided with reed,

The overall dimension length of E, described pocket multifunctional charger * wide * high 〉=96 * 36 * 18 are to≤105 * 40 * 20mm.

2, charger according to claim 1 is characterized in that described charging circuit is designed to have charging, the charging circuit of illumination and function of radio receiver:

The circuit of radio reception part adopts micro-type receiver circuit and power amplifier integrate circuit,

The circuit of live part is to adopt bridge rectifier (D ₁～D ₄) connected as the PTC device of short circuit and overtemperature protection, its PTC device and bridge rectifier (D at the ac input end of charging circuit ₁～D ₄) between be provided with step-down current limiting capacitance C ₁With bleeder resistance R ₁, be parallel with surge current shunt capacitance C at the dc output end of bridge rectifier ₂, the power supply of also connecting indication luminous tube D ₇, luminous tube D ₇A two ends shunt resistance R in parallel ₂, rechargeable battery E ₁And E ₂The employing series system connects, its rechargeable battery (E ₁, E ₂) the two ends dropping resistor R that connected respectively ₃And R ₄, at battery E ₁And resistance R ₃And battery E ₂And resistance R ₄Two ends in parallel respectively do that level of charge shows and the light-emitting diode (D of shunting that overcharges ₅, D ₆), at rechargeable battery (E ₁, E ₂) the two ends parallel connection as the spot light lamp bulb S and the micro-type receiver integrated circuit (IC) of torch for illumination function.