JPH0431796Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention stores a rechargeable battery inside the device body,
The present invention relates to a charging transformer and a rectifier that are arranged in an adapter to charge a device using the adapter, and relates to the configuration of the adapter cord.

(B) Prior Art Examples of conventional electrical equipment using an adapter charging method include the "Charging Circuit" disclosed in Japanese Utility Model Publication No. 49-40498 and the "Rechargeable Electric Equipment" disclosed in Japanese Patent Application Laid-open No. 60-21790.

The former includes an electrical device having a secondary battery and a load power switch, a charger for charging the secondary battery of this electrical device, and a magnet attached to the charger.
The electrical equipment is equipped with a reed switch provided to cut off the current flowing from the battery of the electrical equipment to the load, and the current flowing to the load is reliably cut off during charging to prevent electrical leakage. .

In addition, the latter houses a motor, a battery that serves as a power source for the motor, and a switch that turns on and off the connection between the motor and the battery, and a pair of first terminal fittings that serve as charging terminals for the battery. are exposed at the bottom periphery of the device main body, and a pair of second terminal fittings are exposed, the first terminal fittings being arranged in correspondence with the charging adapter main body housing the step-down transformer, and the device main body and the charging adapter main body are connected to each other. In a rechargeable electric device in which a battery is charged by connecting the first and second terminal fittings together by overlapping each other, a lever for releasing the contact of the switch is provided on the bottom periphery of the device body, and the lever is operated. A protrusion is formed on the charging adapter body, and after the protrusion presses the lever and releases the contact of the switch, the first terminal fitting and the second terminal fitting are connected. This prevents the motor load current from flowing into the adapter body during charging and damaging the adapter body.

These conventional technologies have in common that they cut off current to the load while the device is being charged, but because the adapter itself, which contains charging circuit components such as step-down transformers and rectifiers, is directly connected to the device, charging A mistake-prevention mechanism must be built into the adapter body, making it impossible to use a commonly used charging adapter as is.
There was a problem in that a new charging adapter had to be designed and produced separately.

(c) The problem that the invention aims to solve The problem that the invention aims to solve is that an electrical device equipped with a charging error prevention mechanism is charged using a conventionally used general charging adapter cord. That's true.

(d) Means for solving the problem This invention consists of a plug part that is detachably connected to a battery to be charged and an electrical device equipped with a reed switch connected between the battery and a load, and In the connector device, the connector device includes an adapter cord having a section at one end, and a pair of split cases for storing and fixing the plug section, wherein the split case has a wall surface having a recess for receiving a step on the distal end side of the plug section. and a wall surface that engages with a groove formed in a bushing portion of the plug portion are formed to face each other,
One of the divided cases is provided with a housing section that houses a bias magnet that opens the reed switch, and the bias magnet is held between the plug section and the housing section.

(E) Function The bias magnet provided in the split case opens the reed switch connected between the battery to be charged and the load, so the load is not driven when the battery to be charged is charged, and the charging process is terminated. Mistakes can be prevented. Furthermore, since the bias magnet is held between the plug part and the housing part, the bias magnet can be easily positioned and fixed. Furthermore, since the pair of split cases accommodate and fix the plug part by sandwiching the grooves formed in the tip side step part and the bush part of the plug part, a conventional commercially available adapter cord can be used as is.

(F) Embodiment An embodiment in which the connector device of the present invention is applied to a charging adapter cord for an electric shaver will be described below with reference to the drawings.

1 is a cylindrical main body case made of synthetic resin that houses a motor (not shown), a rechargeable battery, etc.;
2 is a bottom lid that seals the bottom opening of the main body case 1 in a liquid-tight manner; 3 is a printed circuit board disposed inside the bottom lid 2; and 4 is a printed circuit board with one end connected to the printed circuit board 3. Connected and fixed, the other end is attached to the bottom cover 2
A charging terminal is passed through and exposed in a plug receiving part 5 provided at the bottom of the bottom cover 2, 6 is an electric circuit component for driving a motor connected to the printed circuit board 3, and 7 is a terminal for connecting the battery to the motor. A reed switch 8 for cutting off the current to the reed switch 7 is a bias magnet located close to the reed switch 7 to properly operate the reed switch 7.

On the other hand, 9 is an adapter cord, 10 is a plug portion formed at one end of the adapter cord 9;
is an adapter section provided at the other end, and 12 and 13 are divided cases A and B that are attached to the plug section 10. The plug portion 10 has a stepped portion 14 at its tip.
A power receiving terminal (not shown) is provided in this stepped portion 14.
is buried. When the stepped portion 14 is inserted into the plug receiving portion 5 formed in the bottom cover 2, the terminal pin 4 is electrically connected to the power receiving terminal of the stepped portion 14. Further, a cord bush 15 is formed at the joint between the adapter cord 9 and the plug portion 10. The adapter section 11 houses a step-down transformer and a rectifier (not shown) inside, and has a plug blade 16 that can protrude to the outside. The divided case A12 defines a storage section 18 for the magnet 17 therein, and also forms a recess 20 in one side wall 19 for receiving the stepped portion 14 at the tip of the plug section 10, and the plug accommodated in the divided case A12. A wall surface 22 engageable with a groove 21 formed in the bush 15 of the portion 10 is provided at a position facing the one side wall 19. Furthermore, a pair of bosses 23, 23 for screw insertion are provided upright on the inner surface of the divided case A12. 24 is a non-slip rib of the plug portion 10. On the other hand, the divided case B25 has a wall surface 26 that matches the wall surface 22 of the divided case A12.
A recess 27 for allowing the bush 15 to escape is formed in the other wall surface 2 opposite to this wall surface 26.
A step storage recess (not shown) is formed at 8 to correspond to the recess 20 of the divided case A12. Further, holes 30 through which screws 29, 29 are passed are formed in this divided case B25.

In the connector device having the above configuration, the magnet 17 is stored in the magnet storage portion 18 of the split case A12, and the plug portion 10 is inserted into the stepped portion 14 of the divided case A12.
A part of the bushing part 15 is placed in the recess 20, and the groove 21 of the bushing part 15 is engaged with the wall surface 22. Then, the divided case B25 is combined with the divided case A12, and the two cases 12 and 25 are superimposed and fixed via the screws 29 and 29.

When the adapter cord 9 thus obtained is connected to the bottom cover 2 of the device via the step 14, the magnet 1
7 opens the contacts of the reed switch 7, cutting off the power from the battery to the motor.

(G) Effect of the invention According to the invention, the bias magnet provided in the split case opens the reed switch connected between the battery to be charged and the load, so that the load is not driven when the battery to be charged is charged. charging errors can be prevented. Furthermore, since the bias magnet is held between the plug part and the housing part, the bias magnet can be easily positioned and fixed. Furthermore, the pair of split cases accommodate and fix the plug part by sandwiching the grooves formed in the front end side step part and the bush part of the plug part. As a result, when connecting to an electrical device that is not equipped with a reed switch or other means to prevent charging errors, use a conventional adapter cord, and when connecting to an electrical device equipped with a reed switch, use a conventional adapter cord. It is possible to use a connector device such as that of the present invention in which a split cover is attached to the connector. Therefore, there is no need to prepare a separate adapter cord to configure the charging error prevention mechanism, which can contribute to cost reduction.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view of the main parts showing the connector device of the present invention and how it is attached to equipment, Figure 2 is an overview perspective view of the plug section, Figure 3 is an exploded perspective view of Figure 2, and Figure 4 is a split view. FIG. 3 is an exploded perspective view of case A. 2...Bottom cover, 4...Terminal pin, 10...Plug part, 9...Adapter cord, 14...Step part, 20
... recessed part, 19 ... wall surface, 15 ... button part,
21...Groove, 22...Wall surface, 12, 25...Divided case.

Claims (1)

[Scope of utility model registration request] A plug part that is detachably connected to a battery to be charged and an electric device having a reed switch connected between the battery and a load, an adapter cord having this plug part at one end, and the plug part housed and fixed. In a connector device comprising a pair of split cases, the split case engages with a wall surface having a recess for receiving a step on the distal end side of the plug part and a groove formed in a bush part of the plug part. One divided case is provided with a storage section that stores a bias magnet that opens the reed switch, and the bias magnet is held between the plug section and the storage section. A connector device characterized by: