JPS631565Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a charger for electric shavers, etc.

Rechargeable and waterproof electric razors tend to get dirty because water droplets that adhere to the electric shaver accumulate on the charger during charging, or water droplets remain on the charger.
They had the disadvantage that they could cause electric shock, and those with plug blades could cause short circuits.

Therefore, it is an object of this invention to provide a charger that facilitates drainage and prevents electric shock and short circuits.

An embodiment of this invention is shown in FIGS. 1 to 5. That is, this charger consists of a charger main body 1, a case 2, and a back cover 3.The case 2 has a substantially box shape with an open bottom end, and is made of molded plastic, and each part is integrally formed as follows. are doing. First, a substantially U-shaped wall 5 supporting the electric shaver A is extended around the upper plate 4 from the upper ends of the side plates 6 to 9, and its opening 5a is located at the center of the front plate 6 and serves as a drain port.
As shown in FIG.
A connecting base 1 having an H-shaped plan view, which forms a pair of contact mounting holes 10 arranged in the direction of , and partitions these mounting holes 10 and forms an opening in the direction of the left and right side plates.
1 is set upright, and its opening is used as a draining notch 11a. As shown in FIG. 2, the central part of the surface of the upper plate 4 on the back side plate 8 side is the highest apex 12, and the front edge 4a and the left and right side edges 4b, 4c of the upper plate 4 are the bases of the triangular inclined surface 13a. , 13b, 13c, and the front edge 4a, which is the bottom of the first inclined surface 13a, is the wall 5.
Drain ports 14 and 15 are formed at the central lower end of the left and right side plates 7 and 9 of the wall body 5 facing the opening 5a of the wall 5, and the side edges 4b are the bottoms of the second and third inclined surfaces 13b and 13c. , 4c to these drain ports 1
4, 15, and each inclined surface 13a, 13
A plurality of horizontal protrusions 16 are formed on b and 13c,
Make the flow of water droplets detour or meander. As shown in FIG. 1, a switch hole 17 is formed near the apex 12 of the upper plate 4, and as shown in FIG.
A pair of electrode holes 18 are provided at positions facing the drain port 14 of 3b.
form. As shown in FIG. 4, a plurality of horizontal protrusions 19 are formed on the surfaces of the front side plate 6 and left and right side plates 7, 9, a lamp hole 20 is formed in the center of the left side plate 7, and a lamp hole 20 is formed in the center of the back side plate 8. A pentagonal stand 21 with one vertex at the top is formed protrudingly, water guide grooves 22 are formed on the upper edge and both side edges of the stand 21, and a pair of plug blades 23 are simultaneously formed on the stand 21 in a protruding state. do. As shown in FIG. 3, a receiving stage 24 is formed on the edge of the lower end opening 2a of the case 2, and a pair of vertical ribs 25 along the side plates 7 and 9 are formed inside the receiving stage 24, and on the lower end surface of the vertical rib 25. A lid mounting hole 26 is formed, and a transformer support surface 27 is formed on the lower surface of the upper plate 4.

The back cover 3 is attached to the opening 2a of the case 2 as shown in FIG.
, and a peripheral wall 29 that fits inside the opening 2 a . A step hole 30 is formed opposite to the mounting hole 26 .

Now, in case 2 configured in this way,
A pair of pins 33 having output terminal contact holes 33a with water-absorbing felt 31 glued to the inside of the left and right walls of the wall body 5 and an O-ring 32a wrapped around the neck are inserted into the contact mounting hole 10 from above. O-ring 32
a to the inner surface of the contact mounting hole 10, and then insert the pin 33.
Attachment hole 34a of terminal plate 34 in lower end protrusion 33b of
The pair of electrode pins 35 with O-rings 32b are similarly attached to the electrode holes 18, the terminal plate 36 is provided at the lower part, and the protrusion 33b is fixed by pressing the protrusion 33b. Attach the tongue pieces 37a at both ends of the U-shaped bent holding fitting 37 to the lower surface of the switch hole 17 using a pair of screws 38, and set the coil spring 39 upright on the spring receiving portion 37b raised on the holding fitting 37. At the same time, the micro switch 40 is attached to the holding fitting 37, and the lower plate 41a of the switch lever 41 is held at the upper end of the coil spring 39, with one end thereof facing above the handle 40a of the micro switch 40, and set upright from the lower plate 41a. An O-ring 32c is wound around the neck of the lever bar 41b, which is slid through the switch hole 17 in a liquid-tight manner, and the upper end of the lever bar 41b protrudes from the upper surface of the upper plate 4 by a predetermined amount. An O-ring 32d is wound around a circumferential groove of a transparent lamp cover 42 and elastically fitted into the lamp hole 20 from the outside, and an indicator lamp 43 is fitted into a back hole 42a of the cover 42. Further, the transformer 44 is fitted from the lower end opening 2a of the case 2, and the upper surface 44a of the transformer 44 is inserted into the upper plate 4.
A heat insulating cushion 45 is adhered to the inside of the back cover 3, and a packing 46 is placed on the collar 28 and fitted into the lower end opening 2a of the case 2.
The lower surface of the stepped portion 2 is supported by the packing 46.
4 in a fluid-tight manner, and furthermore, O-rings 32e are fitted inside the heads 47a of the pair of screws 47, and the step holes 3 are closed.
0 and screwed into the mounting hole 26 by the tapping action of the screw 47, or by forming a female thread in advance and screwing it in, and the head 47a is sunk into the large diameter side of the step hole 30 to fix the back cover 3.

Other necessary electrical parts are also installed in the case 2 and connected using lead wires 48 as follows.
That is, in the electric circuit shown in FIG. 5, P ₁ is the plug blade 23, P ₂ is the charging contact pin 33, S is the micro switch 40, T is the transformer 44, D ₁ and D ₂ are full-wave rectifier diodes, and N is the full-wave rectifier diode. In the water detection circuit, N ₁ is an electrode pin 35, N ₂ is a light emitting diode 43, Q ₁ is a detection transistor, Q ₂ is a drive transistor, R ₁ and R ₂ are bias resistors, and R ₃ is a current limiting resistor. . Also, U is the electric circuit of an electric razor.
_U0 is a charging terminal, _U1 is a storage battery, _U2 is an operation switch, and M is a motor.

Electric shaver A used with this charger is No. 6
As shown in FIG. 7 and FIG.
A sliding operation switch 51 is provided on the side of the main body 49, a recess 52 is formed in the lower end surface 49a of the main body 49, and a charging terminal 53 is provided upright within the recess 52.

Next, the usage and operation of the charger will be explained. That is, when charging the electric razor A, hold the side plates 6, 7, and 9 of the charger, and press the plug blade 23.
is inserted into an outlet (not shown) and held, and the lower end of the electric shaver A is pushed into the wall 5 (the electric shaver A may be inserted into the outlet after being fitted into the charger). At this time, the wall 5 and the rear end of the electric shaver A are fitted to each other so that they can be inserted and removed depending on the dimension settings, and the electric shaver A is supported by the charger, and the connection base 11 is fitted into the recess 52, and the charging terminal 15 is inserted into the contact pin 33 and is in a connected state. At the same time, the lever bar 41b of the switch lever 41 is pushed with the lower end surface 49a of the electric shaver A, and the lower end surface 49a is brought into contact with the protrusion 16 above the inclined surfaces 13a to 13c. The spring 39 is bent by the downward movement of the switch lever 41, and the lower plate 41a pushes the handle 40a of the micro switch 40 to turn it on. As a result, one of the transformers 44 of the electrical circuit
Commercial power is supplied to the next side, a step-down full-wave rectified voltage is generated on the secondary side, and the storage battery U ₁ of the electric shaver A is charged through the contact pin 33 and the terminal 53. During this time, the heat generated by the transformer 44 is transmitted to the upper plate 4 and radiated, and since there is a gap in the side plate, it is not directly heated, and the protrusion 19 does not obstruct the handle. When charging is complete, remove electric razor A from the charger. At this time, the switch lever 41 is returned by the spring 39 and the micro switch 40 is turned off, so that the power supply to the transformer 44 is cut off even if the plug blade 23 is plugged into an outlet. On the other hand, when electric razor A is turned on, switch 51 is turned on and battery U ₁ is charged.
This causes the motor M to operate and the blade head 50 to be in an operating state in which it can shave.

If the electric shaver A is a washable type and there are water droplets on the surface of the main body 49, the main body 1 can be inserted into the charger and the O-rings 32a to 32c and Patsukin 46
Since the battery is completely waterproof and sealed, the interior is not flooded with water, and water droplets are vaporized or flowed down to the bottom by the following action to prevent water from accumulating on the charger, especially on its top plate 4. That is, when the electric shaver A is inserted into the charger, water droplets adhering to the outer surface of the main body 49 are removed by the water-absorbing felt 3.
1 and attached to the concave portion 52 of the electric shaver A, the water drops fall into the connection base 11, so that the contact pins 33 are not short-circuited, and the water drops flow down from the drainage notch 11a onto the surface of the upper plate 4, so that the connection is completed. There is no accumulation on platform 11. Water droplets adhering to the lower end surface 49a of electric shaver A, water droplets flowing down from draining notch 11a, and water droplets adhering to the back surface of electric shaver A are distributed over three inclined surfaces 13a to 13.
c and along the ridges 16 in a meandering or detour manner, so that a large amount of water does not temporarily flow out, and it wets as much of the surface area of the upper plate 4 as possible to promote evaporation while reaching the lowest position. The remaining water droplets gradually reach the drain ports 5a and 1 along the corners of the wall body 5 by further promoting evaporation by heating the top plate 4 due to the heat generated by the transformer 44.
4 and 15, and the amount of water droplets at the drain outlet is drastically reduced or eliminated. On the other hand, the lower end surface 49 of electric shaver A
Since a contacts the protrusion 16, water droplets adhering to the lower end surface 49a can be easily drained, and the inclined surfaces 13a to 13c
Water droplets will not re-adhere. When there are many water droplets, water droplets accumulate between the electrode pins 35 near the drainage hole 14, causing a short circuit between the electrode pins 35,
As a result, the detection transistor of the water detection circuit N
Since Q ₁ operates from on to off, drive transistor Q ₂ operates from off to on, light emitting diode N ₂ is energized and indicator light 43 lights up through cover 42, warning that the amount of water exceeds the allowable amount. do.

In addition, water droplets that have fallen from the drain ports (holes) 5a, 14, and 15, and that have adhered to the outer surface of the wall 5 and the outer surfaces of the side plates 6 to 9 when the electric shaver A is attached, gradually flow down along the ridges 19. In particular, since the drainage ports 5a, 14, and 15 are not located on the back side plate 8, there are few water droplets flowing down, and even if there are water droplets, the water guide grooves 2
2, so it does not adhere to the plug blade 23. In this way, even the flushable electric shaver A can be safely and economically charged.

The charger of this invention may have one inclined surface and one drain port (hole), or may have a chevron-shaped or spiral-shaped inclined surface.

As described above, in the charger of this invention, the top surface of the charger body is sloped from the contact point to the drain port, and a plug blade is provided on the side where the drain port is not located, making it easy to drain water from the top plate surface. Therefore, it is possible to prevent contamination and electric shock, and also to prevent electric shock and short circuit due to leakage current from the plug blade, which is safe.

[Brief explanation of the drawing]

Fig. 1 is a vertical side view of an embodiment of this invention, Fig. 2 is a plan view thereof, Fig. 3 is a longitudinal front view, Fig. 4 is an exploded perspective view, Fig. 5 is a circuit diagram, and Fig. 6 is a FIG. 7 is a partial perspective view of the electric shaver, and FIG. 7 is a perspective view of the entire electric shaver. 1...Charger body, 5...Wall body, 5a...Drain port, 13a to 13c...Slanted surface, 14, 15...
Drain hole (drain port), 23...plug blade, A...electric razor.

Claims (1)

[Scope of utility model registration request] A charger body with a plug blade protruding from one side of the charger body, a charging contact exposed on the top plate of the charger body to connect a charging appliance, and a stand standing around the top plate. a wall body for holding the electric appliance during charging; a drain hole formed on the side of the wall body not having the outlet connection plug blade; and a drain hole formed on the surface of the upper plate of the charger body. A charger comprising a slope that slopes downward from the charging contact to the drain port and guides water droplets falling from the electrical appliance to the drain port.