JPH0130791Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a charging plug device for electrical equipment used, for example, in small electrical products such as electric shavers.

Electrical equipment equipped with a rechargeable battery is equipped with a mechanism that causes the plug blade to protrude outside only when charging. A conventionally widely used structure is one in which a plug blade holder that holds a plug blade is slidably housed in a plug case, and this plug case is attached to the main body case of an electrical device. The plug case has a surface facing the other side edge of the plug blade open in order to attach a plug contact piece that contacts one side edge of the plug blade.
Furthermore, in order to accommodate the plug blade holder, it is necessary to open the end surface facing the rear end of the plug blade holder. The opening surface of the plug case is covered by a cover equipped with a knob for operating the plug blade holder.

However, it is troublesome to attach the cover that holds the knob to the plug case while connecting the knob to the plug blade holder, and when attaching the plug case to the main body case, the plug contact piece fixed to the plug case is attached to the main body. It has to be connected to a printed wiring board provided in the case via lead wires, which increases the number of wiring locations and there is a risk that the lead wires may break during assembly, making it extremely difficult to assemble.

This invention was made in view of the above points, and the purpose is to provide a charging plug device for electrical equipment that can simplify wiring work and assembly work, and reduce the number of parts.

This idea simplifies the connection between the plug blade holder and the knob by directly attaching the knob to the plug case that houses the plug blade holder.
By covering one side of the plug case with a printed wiring board, the number of parts and assembly locations can be reduced, and by fixing the plug contact piece that contacts the plug blade to the printed wiring board, the number of wiring locations can be reduced. Therefore, the structure is such that assembly work and wiring work can be performed extremely easily.

An embodiment of this invention will be explained based on the drawings.
Reference numeral 1 denotes a main body case of an electric shaver, only a portion of which is shown in the lower part, in which a drive unit for driving the inner blade, a rechargeable battery, and a rectifier are housed while being electrically connected (not shown). An opening 2 is formed in the lower part of the main body case 1 so as to span from the bottom surface to the front surface.

Next, a plug case 3 is provided to be attached to the opening 2. This plug case 3 has a front wall 4 exposed on the front surface of the main body case 1, a bottom wall 5 exposed on the bottom surface of the main body case 1, a ceiling wall 6, and one side wall 7, and one side opposite to the side wall 7. An opening 8 is formed in the opening 8, and an opening 9 is also formed in one end facing the front wall 4. Projections 11 that engage with locking recesses 10 formed in the main body case 1 are formed on both sides of the front wall 4, and a recess 13 for slidably holding a knob 12 and a slit with one end open are formed on the bottom wall 5. The guide hole 14 has a shape of
Two locking holes 15 and 16 are formed perpendicular to the .

Next, the plug blade holder 17 is inserted into the plug case 3 through the opening 9, and the plug blade holder 17 has a square hole 18 formed in the front wall 4.
Two plug blades 19 protruding from are held. A hole 20 is formed in the surface of the plug blade holder 17 facing the bottom wall 5, and the knob 12 is connected to the hole 20 while being urged downwardly by a spring 21 and held so as to be movable up and down. There is. This knob 12 includes a guide rib 22 that is inserted into the guide hole 14 from the open side of one end and held therein, a stopper 23 that protrudes from both sides of the guide rib 22 and engages with either of the locking holes 15 and 16, and a flange. 24.

Next, a printed wiring board 25 covering the opening 8 of the plug case 3 is fixed to the main body case 1, and the printed wiring board 25 has a plug contact piece 2 that contacts one side edge of each of the plug blades 19.
6 is fixed at one end. These plug contacts 26 are connected to the rechargeable battery via the aforementioned rectifier.

In this configuration, in the state shown in FIGS. 1 to 3, the stopper 23 of the knob 12 engages with the locking hole 16 to lock the knob 12 from moving. In this state, the flange 24 is attached to the spring 21.
When pressed against the force of , the stopper 23 comes off from the locking hole 16, and when the knob 12 is slid in this state, the plug blade 19 protrudes from the square hole 18 and is inserted into an AC power outlet. At this time, the stopper 23 engages with the locking hole 15 and fixes the inward movement of the plug blade 19.

When assembling, attach the knob 12 to the plug blade holder 1.
It can be easily assembled by inserting the plug blade holder 17 from the opening 9 while being fitted into the hole 20 of 7 and inserting the guide rib 22 of the knob 12 from the rear end of the guide hole 14. The plug case 3 in which the plug blade holder 17 and the knob 12 are assembled in this way can be attached to the main body case 1 as a single unit by assembling the printed wiring board 25 into the main body case 1 first. The plug blade 19 and the plug contact piece 26 can be connected simultaneously with the installation. After assembly, the plug blade 19 is surrounded by the plug case 3, and one side edge is covered using the printed wiring board 25, so there is no need to separately attach a cover, etc., and the number of parts and assembly man-hours can be reduced. .

Since this invention is constructed as described above, by directly attaching the knob to the plug case that houses the plug blade holder, the work of connecting the knob and the plug blade holder can be facilitated, and the plug case can be easily connected. By covering one side with a printed wiring board, the number of parts and assembly locations can be reduced, and furthermore, by fixing the plug contact piece that contacts the plug blade to the printed wiring board, wiring work can be reduced. Therefore, it has the advantage that wiring and assembly work can be performed extremely easily.

[Brief explanation of drawings]

The drawing shows one embodiment of this invention.
The figure is a longitudinal side view, Figure 2 is a bottom view, Figure 3 is a partially cutaway bottom view, Figure 4 is a perspective view of the plug case, Figure 5 is a perspective view of the plug blade holder, and Figure 6. 7 is a perspective view of the knob with a portion cut away, FIG. 7 is a side view of the knob, and FIG. 8 is a front view of the knob. 1...Main case, 3...Plug case, 4...
...Front wall, 5...Bottom wall, 12...Knob, 14
... Guide hole, 15, 16 ... Locking hole, 17 ...
Plug blade holding hole, 18... Square hole, 19... Plug blade, 20... Hole, 22... Guide rib, 23...
Stopper, 24...flange, 25...printed wiring board, 26...plug contact piece.

Claims (1)

[Scope of utility model registration request] a plug case attached to a main body case, comprising a front wall in which two square holes are formed, a bottom wall having a guide hole with one end open and a locking hole orthogonal to the guide hole; a plug blade holder that holds two plug blades inserted in the holes in parallel and has a bottomed hole facing the bottom wall and is slidably attached to the plug case; The plug blade has a guide rib to be held, a stopper formed at one end of the guide rib to engage with the locking hole, and a flange formed at the other end of the guide rib, and is attached outwardly to the hole of the plug blade holder. Charging of an electrical device, characterized in that the knob is attached with a biasing force, a printed wiring board is fixed to the main body case, and a plug contact piece that contacts one side edge of the plug blade is fixed. Plug device.