JPH041617B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rechargeable vacuum cleaner in which a vacuum cleaner body and a charger can be attached and detached.

BACKGROUND ART Conventionally, in this type of rechargeable vacuum cleaner, when the switch on the vacuum cleaner body 1 is in the operating state (closed) during charging as shown in FIG. 5, the charging current flows to the motor 2 side and the Since the next battery 3 cannot be charged, the switch is a normally open switch 4, and the structure is such that the normally open switch 4 does not operate during charging. 5
is a diode and this diode 5 is the vacuum cleaner body 1
This prevents current from flowing from the secondary battery 3 even if the charging terminal 7 on the cleaner body 1 side is short-circuited after the cleaner body 1 is removed from the charger 6. 8 is a transformer provided in the charger 6, and 9 is a diode. As another conventional example, as shown in FIG. 6, a normally closed auxiliary switch 12 is provided in addition to the hold type on/off switch 11, so that even when the hold type on/off switch 11 is in the operating state (closed), charging is not possible. When the auxiliary switch 12 is opened, the circuit on the motor 13 side is opened so that the secondary battery 14 can be charged. Reference numeral 15 denotes a vacuum cleaner body, and the vacuum cleaner body 15 includes a hold type open/close switch 11, a normally closed type switch 12, a motor 13, a secondary battery 14, a diode 16, and a charging terminal 17. Now, even if the charging terminal 17 on the cleaner body 15 side is short-circuited after the cleaner body 15 is removed from the charger 18, the diode 16 prevents current from flowing from the secondary battery 14. 19 is a transformer, and 20 is a diode, which are built into the charger 18.

Problems to be Solved by the Invention With such a conventional configuration, in the case shown in FIG. This is an unavoidable inconvenience. Further, a diode 5 for preventing short circuit of the charging terminal 7 is required on the cleaner body 1 side. Further, even in the case where the hold type open/close switch 11 and the normally closed type switch 12 as shown in FIG. The present invention solves the above problems without using the short-circuit prevention diode common to the above two examples.

Means for Solving the Problems The present invention is configured such that a micro switch is used to forcibly switch the discharge circuit connecting the secondary battery and the motor in the vacuum cleaner body and the charging circuit for the secondary battery. By keeping the microswitch in a closed state on the normal discharging circuit side, there is no need to provide a diode to prevent backflow between the charging terminals on the cleaner body side.

Function With this configuration, when the vacuum cleaner body is fitted to the charger, the contact point of the micro switch is in the position shown by the broken line in Figure 4, connecting the secondary battery and charging terminal, and connecting the discharge circuit to the motor. Since it is in the open state, charging is possible even when the hold-type open/close switch 24 of the vacuum cleaner main body 21 is in the operating state (closed). In addition, when the vacuum cleaner is removed from the charger, the contacts of the micro switch are in the position shown by the solid line, connecting the secondary battery and motor via the hold-type on/off switch, and leaving the charging circuit open. There is no need to use a diode on the main body side, and it is safe to short-circuit the charging terminal of the vacuum cleaner main body.

Example Examples of the present invention will be described below.

FIG. 4, FIG. 1, FIG. 2, and FIG. 3 are an electric circuit diagram, a central sectional view, a perspective view of the vacuum cleaner body, and a perspective view of the charger of a rechargeable vacuum cleaner according to an embodiment of the present invention. . In the figure, reference numeral 21 denotes a vacuum cleaner body, and the vacuum cleaner body 21 includes a motor 22, a secondary battery 23, a hold-type open/close switch 24, a charging terminal 25, a micro switch 26, a blade 27, and a suction port 28. A charger 29 has a built-in transformer 30 and a diode 31, and a power receiving plug 32 is pulled out from a part thereof. FIG. 2 is a perspective view of the vacuum cleaner main body 21 of the present invention, and the lower part of the vacuum cleaner main body 21 has a pair of grooves 33.
The switch button of micro switch 26 is visible in part of 3. 34 is a charging terminal fitting part. FIG. 3 is a perspective view of the charger 29, in which a pair of charging terminals 25 are erected at the bottom of the charger 29.
A pair of ribs 35 are also provided adjacent to this. Now, to charge the vacuum cleaner body 21, use the charger 29.
When inserting into the main body 21, a pair of grooves 3
3 into a pair of ribs 35, and the micro switch 26 is pushed by the ribs and switched to the charging state. When the pair of charging terminals 25 is fitted further inward, the leads (not shown) in the pair of charging terminal fitting portions 34 come into contact with the pair of charging terminals 25 . In this state, when the plug 32 is inserted into an outlet (not shown), charging is started.

The operation of the present invention will be explained with reference to FIG. The figure shows a state in which the vacuum cleaner body 21 and the charger 29 are connected through the charging terminal 25. In this state, the micro switch 26 is switched to the broken line side, and the charger is 29
From there, the secondary battery 23 is charged through the charging terminal 25. When charging is completed, the vacuum cleaner main body 21 and the charger 29 are separated, and the micro switch 26
is at the position of the solid line. When the hold type open/close switch 24 is closed in this state, the motor 22 rotates.
It functions as a vacuum cleaner.

Effects of the Invention As described above, in the present invention, in addition to the hold-type open/close switch, the vacuum cleaner body is charged by using a micro switch that forcibly switches the secondary battery from the discharging circuit to the charging circuit when charging. Even if the charging terminals of the vacuum cleaner are short-circuited after being removed from the device, the micro switch will open the charging circuit, so no current will flow from the secondary battery, and the charging terminals of the vacuum cleaner will be short-circuited. This has the effect that it is not necessary to provide a diode.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a rechargeable vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a perspective view of the main body of the vacuum cleaner, and FIG.
FIG. 4 is a perspective view of the charger, FIG. 4 is an electric circuit diagram thereof, and FIGS. 5 and 6 are electric circuit diagrams of a conventional rechargeable vacuum cleaner. 21...Vacuum cleaner body, 23...Secondary battery, 25
...Charging terminal, 26...Micro switch, 29
...Charger, 33...Groove, 35...Rib.

Claims (1)

[Claims] 1. A vacuum cleaner body having a built-in secondary battery and a charger, the charger having an upright charging terminal and forming a pair of ribs adjacent to the terminal;
A pair of grooves are provided in the vacuum cleaner body corresponding to the ribs, and the rib of the charger and the groove of the vacuum cleaner body slide into each other, and the rib of the charger fits into the one groove of the vacuum cleaner body. A rechargeable vacuum cleaner configured such that when the provided microswitch is operated and the vacuum cleaner main body and the charger are engaged, the contacts of the microswitch are forcibly switched from the discharge circuit of the secondary battery to the charging circuit. .