JPS6127094Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connection device useful for electric appliances such as portable hair dryers, electric razors, etc., and in particular includes connection terminals that are compatible with a variety of different power supply receivers.

Power supply voltages and power supply parts differ in countries around the world. For example, in Japan and other countries, a pair of blade-shaped connection plugs are used, in the UK and other countries, a pair of wide and short round plugs are used, and in Germany and other countries, a pair of blade-shaped connection plugs are used. A long, narrow, round shape is used.

Therefore, hair dryers, electric razors, etc. cannot be used in other countries unless they are compatible with the power supply of that country. For this reason, if the device is brought to another country during a trip, it is necessary to purchase a device that is suitable for that country, which is extremely uneconomical.

The present invention has been devised in view of this point, and an embodiment shown in the drawings will be described below. Reference numeral 1 denotes a connector comprised of a pair of upper and lower synthetic resin insulating cases 2 and 3. As shown in FIGS. 2 and 3, the upper insulating case 2 has ribs 4 protruding outward on its front and rear end surfaces.
a, 4b, shallow and deep step portions 5, 6 are provided on the inner side of the front rib 4a, and circular high and low recesses 5a, 6a are formed on the inner wall to be continuous with the step portions. The inner wall is provided with a recess 7 and cord storage portions 8 and 9 as shown in FIG. 6A. The lower insulating case 3 is connected to the upper insulating case 2 as shown in FIGS. 2 and 3.
Similarly, ribs 10a protrude outward on the front and rear end surfaces,
10b, and shallow and deep step portions 11, 12 are provided on the inside of the front rib 10a, and circular recesses 11a, 12a of the same shape of the upper insulating case 2 are provided on the inner wall, which are connected to the step portions. It is set up. Further, a square bearing portion 13 is provided at the center position of the height recesses 11a and 12a of the lower insulating case 3, that is, directly below the corresponding recess of the upper insulating case 2. 14, 14, 15,
15 are high recesses 5a and 1 of the respective insulation cases 2 and 3.
Dustproof and electric shock prevention cover made of flexible insulating material such as rubber fixed to the front end of 1a, 16, 16, 1
Reference numerals 7 and 17 indicate screw holes for screwing and fixing the upper and lower cases, which are provided in a part of each case. Further, at the rear of each of the cases, as shown in FIGS. 3 and 8, successive large and small storage portions 18a, 18b, 19a, and 19b are provided, and a plug storage recess 20 and a cord storage recess are provided when each case is assembled and fixed. 21. or,
Cutouts 22 and 23 are formed in one side of the ribs 4a and 10b on the rear end surface of each case, and a cord hooking part 24 is formed. Reference numeral 25 denotes a substantially square rotary switching body made of plastic and having a plurality of sides, an arcuate portion 26 on one side, and a pair of blade-shaped connection insertion terminals 27 on the other three sides. 27, a pair of thick and short round connecting insertion terminals 28, 28, and a pair of elongated round connecting insertion terminals 29, 29 are fixed. The detailed structure will be explained below based on FIGS. 2, 3, 5, and 7. 30, as shown in FIG. 3, a pair of hooking grooves 31, 31, 32,
Three sets of 32, 33, and 33 are provided, and as shown in FIGS. 2 and 3, a cylindrical shaft insertion portion 3 that projects upward is provided at the lower part of the inner wall.
4, screw holes 35, 35, 35, 35 are provided in the corners, and a storage case 36 has a storage part 36 inside;
Reference numeral 7 designates a connection terminal board made of a good conductive material such as a copper plate, which has fixing pieces 39, 39 having upwardly bent screw holes 38, 38 on one side of two opposing sides, and one side of the other side. A fixing piece 41 having a screw threading hole 40 bent upward is provided at the center thereof, and four sliding elastic pieces 42, 42, 42 are bent upward parallel to each side of the storage case 30 at the center. , 42 are provided. 43 has a relatively large diameter insertion hole 44 in the center.
The outer diameter of the insulating plate is set to be slightly smaller than the outer diameter of the connection terminal plate 37.
45 is a fixed shaft having a ring-shaped holding fitting 46 in a part and having a tapered upper part in the shape of a rectangular prism;
7 has the same external shape as the storage case 30, has screw holes 48, 48, 48, 48 in the corners, has a shaft insertion hole 49 in the center, and has large diameter insertion holes 50 in the three sides. This is a lid plate of the storage case 30 in which elongated insertion holes 51 and 52 are bored. 53
is a ring-shaped contact terminal plate made of a highly conductive steel plate, etc., and has screw holes 54 at two places on the circumference.
55, fixed pieces 56 and 57 are bent downward, and a connecting piece 58 is provided at one point, which is bent downward and has a U-shaped end. 59 is the storage case 3
0, an elastic terminal plate such as a copper plate having one end positioned in the recess 7 and the other end fixed to the cord storage part 8; 61 a bearing/cover covering the recess 7; 62 has one side as the upper insulating case 2
A contact 63 has a plug 64 at one end, and the other end is inserted into the upper insulating case 2 with a fixing band. A fixed power cord has one terminal connected to the elastic terminal plate 60 and the other terminal connected to the contact 62. (See Figure 6 A and B) Also, the blade-shaped connection insertion terminal 27,
27 is provided with hanging bent portions 27a, 27a on one side of each, and furthermore, a bent piece 27c is provided on one side end of one connection plug-in terminal, and a screw thread is provided on one side end of the other connection plug-in terminal. A joining piece 27d is provided. Further, each of the thick and short connecting insertion terminals 28, 28, 29, 29 has a retaining ring 28a, 28a, 29 at one end.
a, 29a and a threaded portion 28 at one end.
b, 28b, 29b, and 29b are provided.

Next, the assembly order and operation will be described. First, the connection terminal plate 37 is fitted into the storage portion 36, and then the hooking bent portions 27a, 27a of the pair of blade-shaped connection insertion terminals 27, 27 are assembled. are fitted into the latching grooves 31, 31, and the retaining ring 28a of the pair of thick and short connecting insertion terminals 28, 28,
28a into the latching grooves 32, 32, and further fitting the retaining rings 29a, 29a of the pair of elongated connection insertion terminals 29, 29 into the latching grooves 33, 33. At this time, the insulating plate 43 includes the bent pieces 27c and the screwed pieces 27d of the pair of blade-shaped connection insertion terminals 27, 27.
The connection insertion terminals 27, 27 are pushed downward by the latching bent portions 27a, 27a and the latching groove portions 31, 31, so that the connection insertion terminals 27, 27 are connected to the thick and short connection insertion terminals 28, 28 and the elongated connection insertion terminals 28, 28. Connection plug terminal 29,
29 can be prevented from coming off and being pushed in by the retaining rings 28a, 28a and 29a, 29a. Then, the blade-shaped connection insertion terminals 27, 2
The threaded piece 27d of one of the connection insertion terminals 7 and the screw threaded hole 38 of the fixing piece 39 are screwed together and fixed with a screw from the cut groove 59, and one of the thick and short connection insertion terminals 2828 is connected. Fixing piece 41 fixes screw part 28b of the plug-in terminal.
The threaded portion 2 of one of the elongated connection insertion terminals 29, 29 is screwed into the screw hole 40 of
9b is screwed and fixed into the screw hole 38 of the fixing piece 39. By this screwing and fixing, each one of the connection insertion terminals is brought into a connected state via the connection terminal plate 37, and can be connected to one of the power supply sides. And fixed shaft 45
Connect the lower part of the sliding elastic pieces 42, 42 of the terminal plate 37
... and fit into the bearing part 13 of the lower insulating case 3 via the cylindrical shaft insertion part 34. After that, the fixed shaft 45 is inserted into the shaft insertion hole 49, and the cover plate 47 is placed on the upper part of the storage case 30, and the screw holes 48, 48...
... and the screw holes 35, 35... are screwed and fixed with screws, and the cover plate 47 and the storage case 30 are integrated to form the rotation switching body 25. Then, by inserting the fixed pieces 56, 57 of the contact terminal plate 53 into the elongated insertion holes 51, 52 and inserting the contact piece 58 into the large-diameter insertion hole 50, the contact piece 58 is moved into the other blade shape due to its elasticity. The screw portion 28b of the other of the thick and short connection plug-in terminals 28, 28 is brought into contact with the bent piece 27c of the connection plug-in terminal of
are screwed together, and the threaded portion 29b of the other connection insertion terminal of the elongated connection insertion terminals 29, 29 is screwed and fixed to the screw threading hole 54 of the fixing piece 56.

By this screwing and fixing, the respective other connection insertion terminals are brought into a connected state via the contact terminal plate 53, and can be connected to the other power supply side. Then, the upper part of the fixed shaft 45 is inserted into the recess 7 through the bearing/cover 61 of the upper insulating case 2, and brought into elastic contact with the elastic terminal plate 60, and combined with the lower insulating case 3, and the screw holes 16, 16, 17, and 17 are screwed together and fixed. At this time, the rotation switching body 25 is rotatably supported by the upper and lower parts of the fixed shaft 45, and the presser metal fitting 46
Since the upper end of the rotating shaft 45 is pressed downward by the elastic terminal plate 60, the sliding elastic pieces 42, 42...
comes into ballistic contact with. Further, as the upper and lower insulating cases 2 and 3 are fixed, the connector 62 comes into elastic contact with the contact terminal plate 53, completing the connection on the respective power supply sides.

Therefore, when using a hair dryer or an electric razor in Japan, for example, when the left end of the arcuate portion 26 is pressed with a finger from the state shown in FIG. 1, the rotation switching body 25 is fixed. axis 45
However, in this case, since the fixed shaft 45 has a prismatic shape, the sliding elastic pieces 42, 42, 42, 42, 42, 42, 42,
It is rotated about 90 degrees against the elasticity of 42 to bring it into elastic contact with the adjacent sliding elastic pieces 42, 42, 42, 42, and performs an articulated movement. At this time, one of the power cords 63 connects one of the connection plug-in terminals via the elastic terminal plate 60, the fixed shaft 45, and the connecting terminal plate 37, and the other connects the contact 62 and the contact terminal plate 5.
3 to maintain the connection state with the other of the respective connection plug-in terminals. In this way, a pair of blade-shaped connection insertion terminals 27, 27 protrude from the stepped portion 6 of the connector 1. In addition, when used in the UK etc., the rotary switching body 25
is rotated to cause the thick and short connection insertion terminals 28, 28 to protrude from the connector 1. Further, in Germany and the like, the rotary switching body 25 is rotated to cause the elongated connection insertion terminals 29, 29 to protrude from the connector 1, as described above.

In this way, a connection plug terminal that matches the power receiving part of the country is selected and the plug 64 is connected to an electric appliance (not shown).

When not in use, the rotary switching body 2 is
5 is placed on the side of the connector 1 to prevent dust. Each connection insertion terminal is covered with an electric shock prevention cover 14, 14, 15, 15. Also, power cord 63
Connector 1 is partially hooked into cutouts 22 and 23.
The plug 64 is wound between the ribs 4a, 4b, 10a, and 10b on the outer wall of the plug 64, and the plug 64 is stored in the plug storage recess 20.

Note that the holding metal fitting 46 of the fixed shaft 45 is connected to the connection terminal plate 3.
The sliding elastic pieces 42, 42, 42, 42 of 7 are pressed to ensure contact between the fixed shaft 45 and the connection terminal plate 37, and the elastic sliding pieces 42, 42, 42, 42 are pressed against the fixed shaft 45. This is to appropriately strengthen the contact and accurately perform the articulating operation of the rotary switching body 25.

As described above, the present invention installs a rotary switching body having a plurality of sides and different connection plug-in terminals on each side in a pair of upper and lower insulating cases, and connects the power cord and the connection plug-in terminals to each other. Because it is connected,
Since the connection plug-in terminal can be selected according to the power receiving part of the country of use, there is also an advantage that there is no need for a plurality of electrical appliances having various connection plug-in terminals unlike in the past. In addition, the connection plug terminal can be selected by simply rotating the rotary switching body to obtain the desired connection plug terminal on one side, making it clearly distinguishable from other connection plug terminals and making it easier to operate. It is extremely simple, and the electric appliances used are not particularly limited, resulting in excellent effects.

[Brief explanation of the drawing]

Figure 1 is an external perspective view of the connecting device of the present invention;
The figure is a sectional view, Figure 3 is an exploded perspective view of this device, and Figure 4 is a cross-sectional view.
The figure is an inner wall view of the upper insulating case, Figure 5 is a plan view of the rotary switching body with the lid removed, and Figure 6 is a cross-sectional view showing the contact state of the elastic terminal plate of the fixed shaft and the contact. Fig. 8 is a sectional view showing the mounting structure of the side piece of the connecting device, Fig. 7 A and A are fixed views,
FIG. 9 is a sectional view taken along the line AA in FIG. 3. 1... Connector, 2, 3... Upper and lower insulation cases,
25... Rotation switching body, 27, 27... Blade-shaped connection insertion terminal, 28, 28... Thick and short connection insertion terminal,
29, 29...Elongated connection plug-in terminal, 63...Power cord.

Claims (1)

[Scope of utility model registration request] A pair of upper and lower insulating cases, a rotary switching body installed in the insulating case and having a plurality of sides with different connection plug-in terminals fixed to the sides, and a power cord, the power cord and the connection plug. A connecting device for electrical appliances, characterized in that a terminal is electrically connected.