CN203409696U

CN203409696U - Wireless electric screwdriver

Info

Publication number: CN203409696U
Application number: CN201320134745.8U
Authority: CN
Inventors: 杜金昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-24
Filing date: 2013-03-24
Publication date: 2014-01-29
Anticipated expiration: 2023-03-24

Abstract

The utility model discloses a wireless electric screwdriver with wireless power charging capability. A wireless power receiving device, a charging circuit and a power storage device are additionally arranged in a screwdriver, and a wireless charger is arranged outside the screwdriver. When the wireless electric screwdriver is used, a user is prevented from being hindered by a power cord, so that the working speed of the user can be increased; the wireless electric screwdriver is particularly suitable for a flow production line of a factory.

Description

Wireless electric screwdriver

One. technical field

The utility model relates to the electric supply installation of electric screw driver.

Two. background technology

Electric screw driver utilizes electric power fast rotational screw, screw means or back-out; Electric screw driver is connected on power supply adaptor by a power line, and power supply adaptor is connected with power supply again; Use electric screw driver can drag power line, power line has the possibility that trips workpiece and other article, user can avoid this class event to occur in operation, but this makes notice can not all concentrate in the work in hand, thereby reduction operating efficiency, especially on allegro factory flow production line; When Rechargeable electric screw driver is used, without power line, but general battery life is limited, and the charging interval is long, if long-time on factory's flow production line, high-frequency use, charging times will cause charging inlet to plug frequently frequently, easily cause charging inlet to damage.

Three. summary of the invention

For the use inconvenience of wire control electric screwdriver, the charging interval of Rechargeable electric screw driver is long, and battery life is short, the flimsy fault of charging inlet; The utility model is taked following new measure:

1. in electric screw driver, add wireless power receiving system (in figure 1), the electric power transmitting for receiving wireless mode.

2. in electric screw driver, use double layer capacitor, double layer capacitor to add battery combination, 2 kinds of power storage elements of battery, the electric power storing device of the optional combination of 3 class (in figure 3); Electric power storing device is used for the electric power that storage passes over from wireless power receiving system (figure 1), supplies with electric screw driver motor (in figure 5) and uses.

3. charging circuit (in figure 2) is to the double layer capacitor in electric power storing device (in figure 3), and battery carries out Charge Management.

4. the wireless charger that electric screw driver exterior arrangement and wireless power receiving system (in figure 1) match (in figure 4), wireless charger is transformed into wireless power the electric power of power supply and sends.

Wireless power receiving system (in figure 1) and private radio charger (in figure 4) are done wireless connections, and the universal wireless charger that also can match with other (in figure 4) is done wireless connections, the electromagnetic field that the medium that plays connection function is radio frequency band; Wireless power receiving system (in figure 1) and charging circuit (in figure 2) are connected as circuit, charging circuit (in figure 2) and electric power storing device (in figure 3) are connected as circuit, charging circuit (in figure 2) also can be by wireless charger (in figure 4) and wireless power receiving system (in figure 1) wireless connections be connected as circuit with electric power storing device (in figure 3) again, electrical energy transfer, give the latter, it is carried out to Charge Management; Electric power storing device (in figure 3) and electric screw driver motor (in figure 5) are connected as circuit.

If the output voltage restricted effect of wireless charger (in figure 4) to wireless power receiving system (in figure 1), and the charging deboost of power storage elements combination is consistent in this voltage and electric power storing device (in figure 3), charging circuit (in figure 2) can be cancelled.

Pure double layer capacitor energy storage mode has long-life advantage, needs frequent charge, but each charging interval is very short, generally lower than 10 seconds, conventionally can use continuously 3-10 minute after being full of electricity, is applicable to using on factory's flow production line; Double layer capacitor has added the set of battery combined accumulation energy the mode long-life of electric capacity and battery and the advantage that once charging can be used for a long time.

The screwdriver of wireless electric shown in the utility model does not charge in using, and avoids user to be subject to harmful electromagnetic radiation.Use wireless electric screwdriver shown in the utility model to avoid the distribution of power line to user's notice, be conducive to increase work efficiency.

Four. accompanying drawing explanation

Fig. 1 is circuit frame principle figure, and 1 is wireless power receiving system, and 2 is charging circuit, and 3 is electric power storing device, and 4 is wireless charger, and 5 is electric screw driver motor.

Five. the specific embodiment

Between electric power storing device (in figure 3) and electric screw driver motor (in figure 5), conventionally also there is DC-DC converter; DC-DC converter becomes burning voltage to supply with electric screw driver motor (in figure 5) the unstable voltage transition of electric power storing device (in figure 3) output; the conversion of DC-DC converter output voltage, electric current also can be used for electric screw driver motor (in figure 5) speed governing, turns square.

The screwdriver of wireless electric shown in the utility model can add pluggable power line in actual use, the flexibility in increase using, and electric power storing device (in figure 3) also can be used to the electric power that storage is transmitted from power line; Add electric weight, charging indication increases the convenience in using; The buffer memory double layer capacitor that can increase electric power in high-power wireless charger (in figure 4), the heavy current impact to power supply while weakening quick charge.

Claims

1. wireless electric screwdriver; It is characterized in that, increase wireless power receiving system and electric power storing device in electric screw driver, wireless power receiving system exists circuit to be connected with electric power storing device, and electric power storing device exists circuit to be connected with electric screw driver motor.

2. wireless electric screwdriver described in claim 1, is characterized in that, the private radio charger that wireless electric screwdriver exterior arrangement being and not being line power receiving system matches.

3. wireless electric screwdriver as claimed in claim 1, is characterized in that, in wireless electric screwdriver, also comprise charging circuit, charging circuit is connected between wireless power receiving system and electric power storing device.

4. wireless electric screwdriver as described in claim 1,2, is characterized in that, also comprises charging circuit in wireless electric screwdriver, and charging circuit is done wireless connections by private radio charger and wireless power receiving system.