JPS6037802Y2 - rechargeable electrical equipment - Google Patents

Description

[Detailed description of the invention] The present invention enables the installation of a rechargeable battery and its charging circuit components in the main body of a small rechargeable electric device such as an electric shaver easily without the need for any mounting parts. At the same time, it is possible to ensure insulation between the pair of conductive plates that come into contact with the plug blade of the charging plug that is operated to protrude during charging to supply power to the charging circuit.

Hereinafter, one embodiment of the present invention will be described based on the drawings.
Figure 1 shows the overall structure of an electric shaver, which is a rechargeable electric device.Of the pair of split cases 1 and 1' that make up the main body, a charging plug blade 3 is attached to one side wall 2 of one split case 1.
, 3' are formed integrally with the front wall 4 located on the protruding side,
Projection openings 5, 5' for plug blades 3, 3' are formed in this front wall 4.

The charging plug blades 3, 3' have an operating knob 7 that moves like a seesaw on the lower surface of the plug blade mounting base 6, and by pushing the eldest child 7, the lock can be released and the charging plug blade 3.3 can be slid. It is said that

Reference numeral 8 denotes a partition wall provided on the inner surface of one of the split cases 1 to form a storage chamber 9 for the charging plugs 3, 3' in the lower part of the main body, and the partition wall 8 has a portion facing the front wall 4. A vertical wall 13 is integrally formed with the partition wall 8 so as to partition the remaining surface 11 where the notch 10 is made and the surface 12 adjacent thereto. There is.

Furthermore, this vertical wall 13 projects slightly to the lower part of the partition wall 8, and this projecting wall 13' has the effect of isolating the tips of the conductive contact pieces, which will be described later.

The earthwork is a printed circuit board, and a storage battery 15 and its charging circuit components such as a transformer 16 and a diode 17 are fixed on the other side, and each electric component is printed and wired on the opposite side of the printed circuit board 1.

Further, a vertical slit 18 is formed at the lower end of the printed circuit board earthwork, and the base ends of a pair of conductive contact pieces 19, 19' are caulked or otherwise protruded on both sides of this slit 18 at right angles to the board earthwork. It is attached by means of.

The conductive contact pieces 19 and 19' have different lengths from their flat parts 20 and 20', and the tips of the flat parts 20 and 20' are folded inward in a U-shape so as to sandwich the partition wall 8. A resilient contact portion 21, 21' is provided at the tip thereof.

Reference numeral 22 denotes a threaded barrel for a fixing screw 29 that is passed through from the outer surface of the other split case 1' when assembling the main body, and is formed on the inner surface of the one split case 1. It fits into a mounting hole 23 drilled at one lower end of 14.

The inner surface of the other split case 1' is provided with a protrusion that fits into the cutout 10 of the partition wall 8 and closes the cutout 10 when it overlaps with the one split case 1. and a cutout opening 24 that fits into the front wall 4.
It also has

Reference numeral 25 denotes a motor, terminal pieces 26 and 26 of which are soldered to terminal rods 27 and 27 planted above the printed circuit board 14, and power is supplied from the storage battery 15.

28 is an outer blade portion.

In the above configuration, the assembly method will be explained below.
so that the vertical slit 18 of the printed circuit board 14 fits into the vertical wall 13 on the partition wall 8 of one divided case 1;
As shown in FIG. 2, the printed circuit board is placed on the inner surface of the divided case 1 so that the mounting hole 23 of the printed circuit board H fits into the threaded main tube 22 on the inner surface of the divided case 1.

By fitting the slit 18 into the vertical wall 13 in this way, the printed circuit board 14 can be positioned.Furthermore, the mounting hole 23 at the other end of the board is inserted into the threaded tube 22 on the inner surface of the divided case 1, so that the printed circuit board 14 can be It can be fixed even without a mounting member.

The vertical wall 13 has a conductive contact piece 19 and a conductive contact piece 19'.
The conductive contact pieces 19 and 19' are completely insulated and isolated from each other to prevent short-circuit contact.

Moreover, since this vertical wall 13 also extends downward, this lower vertical wall 13 is connected to the elastic contact portion 21 at the tip of the conductive contact pieces 19, 19'.
．． 21 are also isolated to prevent them from coming into contact with each other.

In this way, the vertical wall 13, which is the mounting portion of the printed circuit board 14, also acts as an insulator for the conductive contact pieces 19, 19', resulting in a very clever structure.

Then, the charging plug blades 3, 3 are placed in the storage chamber 9 below the partition wall 8.
and overlap with the other divided case 1', S is incorporated, and the elastic contact portions 21, 21 of the conductive contact pieces 19, 19'
' contacts the upper edge 3'' 3 nt of the charging plug blade 3° 3' from the right angle direction, and comes into sliding contact when the plug blades 3, 3' are inserted and removed.

Finally, the fixing screw 29 is inserted into the threaded hole 30 of the other split case 1' and tightened to the threaded main tube 22, thereby completely assembling the razor body.

After assembling in this way, the charging plug blades 3, 3' are slid to protrude using the operating knob 7, and the protruding charging plug blades 3, 3'
′ is connected to a power outlet, the conductive contact pieces 19, which are in elastic contact with the plug blades 3, 3′, as shown in the circuit diagram of FIG.
19' is connected to the primary coil 16' of the charging transformer 16, so a voltage is induced in the secondary coil 16',
This is rectified by the diode 17 and the storage battery 15 is charged.

Of course, when shaving, a drive switch (not shown)
The motor 25 rotates using the storage battery 15 as a power source and performs shaving.

As described above, the present invention fixes a pair of conductive contact pieces of different lengths extending perpendicularly to the board to the lower end of a board on which a storage battery and its charging parts are mounted, and connects the fixed ends of the conductive contact pieces to each other. A vertical slit is formed on the board between them, and the board is mounted on the inner surface of one of the split cases. When this board is mounted, the vertical slit is formed in the lower part of the board to define a charging plug storage chamber. The conductive pieces are guided and inserted into the vertical wall of the partition wall provided in the divided case to enable positioning of the board, and the conductive pieces are reliably insulated from each other by the partition wall.

Further, the vertical wall is extended to the lower part of the partition wall, and this extended wall in turn serves to insulate the contact portions that come into contact with the charging plug blade.

Therefore, the fixing of the circuit board with electrical components attached to it is related to the assembly of the main body case, making the structure more clever and reducing the number of parts to be installed, while also ensuring that the insulation of the input terminal part is maintained during charging. Its practical effects are remarkable.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a cross-sectional view of the whole with main parts broken away, Fig. 2 is an exploded perspective view of structural parts,
FIG. 3 is an electrical circuit diagram. 15... Storage battery, 14... Board, 3,
3'...Charging plug blade, 19,19'...
...Pair of conductive contact pieces, 18...Slit, 1.
...One split case, 13...Vertical wall,
9...Charging plug blade storage chamber, 8...
Partition wall, 21, 21'...Contact part, 13'...
・・・Protruding wall part.

Claims (1)

[Scope of claim for utility model registration] ■ A pair of conductive contact pieces that come into contact with the charging plug blade are attached to the lower end of the board on which the storage battery and its charging circuit components are attached,
A vertical slit is formed in the substrate portion between the mounting portions of both conductive contact pieces, and this slit is fitted into a vertical wall provided on the inner surface of one of the divided cases to position the lower end of the substrate, A rechargeable electric device in which the vertical wall separates the two groove electric contact pieces. (2) The rechargeable electric device according to claim 1, wherein the vertical wall is formed in a partition wall on the inner surface of the divided case that defines a storage chamber for the charging plug blade. (2) Both of the conductive contact pieces are provided perpendicularly to the board, and the folded portion of the tip is used as the contact portion with the upper edge of the charging plug blade, and the portion between the two contact portions protrudes to the lower part of the partition wall. The rechargeable electric device according to claim 1, which is separated by a protruding wall portion of the vertical wall.