JPS631816B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a charger for electric shavers and the like.

Rechargeable and waterproof electric razors have traditionally had the disadvantage that water droplets attached to the electric shaver can collect on the charger during charging, and water droplets can remain on the charger, making it easy to get dirty and causing electric shock.

Therefore, an object of the present invention is to provide a charger that facilitates drainage.

An embodiment of the 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 is formed of plastic in a substantially box shape with an open bottom end, 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.
A planar H-shaped connection base that forms a pair of contact mounting holes 10 in the center of the upper plate 4 in the direction of the left and right side plates 7 and 9, partitions these mounting holes 10, and forms an opening in the direction of the left and right side plates. 11 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 vertex 12, and the triangular inclined surface 13 has the front edge 4a and the left and right side edges 4b, 4c of the upper plate 4 as the bases.
a, 13b, 13c, and the first inclined surface 13
The front edge 4a, which is the bottom side of the wall 5, faces the opening 5a of the wall 5, and drain holes 14 and 15 are formed at the center lower end of the left and right side plates 7 and 9 of the wall 5, and the second and third Side edges 4b, 4 serving as the bottoms of the inclined surfaces 13b, 13c
The central part of the water droplet c faces these drainage holes 14 and 15, and a plurality of horizontal protrusions 16 are formed on each of the inclined surfaces 13a, 13b, and 13c so that water droplets flow in a detour or in a meandering manner. Vertex 12 of upper plate 4
A switch hole 17 is formed near the drain hole 14, and a pair of electrode holes 1 are formed at a position facing the drain hole 14 on the second inclined surface 13b.
form 8. 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 one apex is formed in the center of the back side plate 8. Pentagonal stand 2
A water guide groove 22 is formed on the upper edge and both side edges of the stand 21, and a pair of plug blades 2 are formed on the stand 21.
3 is simultaneously molded into a protruding state. A receiving step 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, 9 are formed inside the receiving step 24,
A lid attachment hole 26 is formed on the lower end surface of the vertical rib 25, and a transformer support surface 27 is formed on the lower surface of the upper plate 4.

The back cover 3 has a collar 28 that comes into contact with the end surface of the opening 2a of the case 2, and a peripheral wall 29 that fits inside the opening 2a.
0 is formed.

Now, a water absorbing felt 31 is glued to the inside of the left and right walls of the wall body 5, and a pair of pins 33 each having an output terminal contact hole 33a with an O-ring 32a wrapped around the neck.
is inserted into the contact mounting hole 10 from above to bring the O-ring 32a into close contact with the inner surface of the contact mounting hole 10,
The mounting hole 34a of the terminal plate 34 is inserted into the lower end protrusion 33b of the pin 33 and fixed by crushing the protrusion 33b. Similarly, a pair of electrode pins 35 with O-rings 32b are inserted into the electrode hole 18. The terminal plate 36 is provided at the bottom, and the tongue pieces 37a at both ends of the U-shaped bent holding fitting 37 are attached to the lower surface of the upper plate 4 at the position of the switch hole 17 with a pair of screws 38. Knocked-up spring receiver 3
A coil spring 39 is erected on 7b, a micro switch 40 is attached to the holding fitting 37, and a lower plate 4 of a switch lever 41 is attached to the upper end of the coil spring 39.
1a, one end of which faces above the handle 40a of the micro switch 40, and an O-ring 32 attached to the neck of the lever rod 41b that stands up from the lower plate 41a.
c is wrapped around the lever rod 41b and slidably through the switch hole 17 in a liquid-tight manner, and the upper end of the lever rod 41b protrudes from the upper surface of the upper plate 4 by a predetermined amount. An O-ring 32d is wrapped around the circumferential groove of the transparent lamp cover 42 to close the lamp hole 20.
is elastically fitted from the outside to the back hole 42a of the cover 42.
An indicator light 43 is fitted in the. Further, the transformer 44 is fitted from the lower end opening 2a of the case 2, and its upper surface 44a is brought into contact with the transformer support surface 27 of the upper plate 4,
A heat insulating cushion 45 is glued inside the back cover 3, and a gasket 46 is placed on the collar 28 and fitted into the lower end opening 2a of the case 2. The cushion 45 presses and supports the lower surface of the transformer 44, and the gasket 46
6, the stepped portion 24 is brought into close contact with the stepped portion 24 in a fluid-tight manner, and an O-ring 32e is fitted inside the heads 47a of the pair of screws 47, and the screws 47 are inserted into the mounting holes 26 by the tapping action of the screws 47. The back cover 3 is fixed by screwing it in, or by forming a female thread in advance and screwing it in, so that the head 47a is sunk into the large diameter side of the stepped hole 30.

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.

The electric shaver A used for this charger is the 6th
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, push the lever bar 41b of the switch lever 41 with the lower end surface 49a of the electric shaver A, and push the lower end surface 49a onto the protrusion 1 above the inclined surfaces 13a to 13c.
It is in contact with 6. 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, commercial power is supplied to the primary side of the transformer 44 of the electric circuit, and a step-down full-wave rectified voltage is generated on the secondary side, and the contact pin 33 and terminal 5
3, the storage battery _U1 of the electric shaver A is charged. 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 charging. At this time, the switch lever 41 is returned by the spring 39 and the micro switch 40 is turned off, so even if the plug blade 23 is plugged into the outlet, the transformer 44
The power supply to is cut off. On the other hand, when the switch 51 of the electric shaver A is turned on, the motor M is operated by the charged battery _U1 , and the blade head 50 is put into an operating state for shaving.

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 droplets 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. It does not accumulate on the table 11. Electric razor A
Water droplets attached to the lower end surface 49a of the electric shaver A, water droplets flowing down from the draining notch 11a, and the electric shaver A.
The water droplets attached to the back surface of the three inclined surfaces 13a to 1
3c and along the ridges 16 in a meandering or detour manner, 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 upper 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 are gradually transmitted along the ridges 19. It flows down and prevents it from falling as it is to promote evaporation, and in particular, water droplets flowing down the back side plate 8 flow down the water guide groove 22 and do not adhere to the stopper blade 23. In this way, even the flushable electric shaver A can be safely and economically charged.

Note that the charger of the present invention may have one inclined surface and one drain port (hole), or may have a chevron-shaped or spiral-shaped inclined surface. Further, the holding means for the electric shaver A may be a wall or a connecting stand.

As described above, in the charger of the present invention, the surface of the upper plate of the charger body is sloped from the contact point to the drain port, which facilitates drainage of water from the upper plate surface and prevents staining and electric shock. be.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of an embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a longitudinal sectional 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, 5a...Drain port, 13a~
13c... Slanted surface, 14, 15... Drain hole (drain port), A... Electric shaver.

Claims (1)

[Claims] 1. A charger body, a charging contact that is exposed on the top plate of the charger body and connects a charging electric appliance,
A drain hole is formed on the edge of the upper plate of the charger body, and a drain hole is formed on the surface of the upper plate of the charger body and slopes downward from the charging contact to the drain hole to collect water droplets that fall from the electric appliance. A charger equipped with an inclined surface that guides the user to a drain port.