JPH11168836A - Charger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid a short-circuit failures, even if a conductive metallic part is brought into contact with a charging terminal. SOLUTION: A charger has a charger main part 1 which has a charging circuit 5 and a pair of charging terminals 6 and 7 connected to the charging circuit 5. The respective charging terminals 6 and 7 have elastically deformable outer terminal plates 13 and inner terminals 14, which face each other with predetermined spacings. The inner terminal plates 14 are connected to the charging circuit 5. Electrodes 13a protruding from the outer terminal plates 13 are made to protrude out through a through-holes 17 formed in the charger main part 1. A cordless handset 3 is set on the charger main part 1, and charged terminals 9 and 10 are brought into contact with the electrodes 13a. With this constitution, the outer terminal plates 13 are elastically deformed and brought into contact with the inner terminal plates 14 and a charge current is applied to a battery 8 in the cordless handset 3 from the charging circuit 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charger for charging a cordless handset, a portable telephone, a charging battery, and the like.

[0002]

2. Description of the Related Art A conventional charger for a cordless telephone is shown in FIGS. This has a charger body 1 having a horizontally-long rectangular shape, and a cordless handset 3 is detachably stored in a storage recess 2 formed on the upper surface of the charger body 1. A charging circuit 5 connected to a power supply 4 such as a home power supply is provided in the main body 1, and a pair of charging terminals 6 connected to the charging circuit 5 are provided.
7 is provided on the bottom surface of the storage recess 2. The cordless handset 3 has a transmitting section 3a and a receiving section 3b, in which a battery 8 is provided, and charging terminals 9 and 10 connected to the battery 8 face charging terminals 6 and 7, respectively. It is provided on the outer peripheral surface of the transmitting section 3a.

In the above configuration, the cordless handset 3
From the charger main body 1 (see the solid line and FIG. 7 in FIG. 6), by storing the cordless handset 3 in the storage recess 2 (see the phantom line in FIG. 6 and FIG. 8),
The terminals to be charged 9 and 10 are brought into contact with the charging terminals 6 and 7, and the battery 8 is charged from the charging circuit 5 to charge the battery 8.

[0004]

In the above-mentioned conventional configuration,
As shown by phantom lines in FIG. 7, when the conductive metals 11 such as pins and clips come into contact with the charging terminals 6 and 7, there is a possibility that a short circuit accident may occur.

As an example of a technique for solving the above problem, there is one disclosed in Japanese Utility Model Laid-Open No. 5-23653. This is because the circuit for connecting the charging terminals 6 and 7 and the charging circuit 5 includes a switch for preventing short-circuit accident which is always off, and the cordless handset 3 is housed in the housing recess 2 so as to be connected. The switch is turned on by a projection provided on the cordless handset 3, and the battery 8 is supplied with electricity from the charging circuit 5.

According to the above configuration, even if the conductive metals 11 such as pins and clips come into contact with the charging terminals 6 and 7, the switch is always off, so there is no danger of a short circuit occurring. . However, in this case, the switch is interposed in the circuit, so that the number of parts increases and the manufacturing cost increases.

Another example of a technique for solving the above-mentioned problem is disclosed in Japanese Patent Application Laid-Open No. Hei 4-200046.
This is because a convex portion is protruded from the side surface of the storage concave portion 2 and
A concave portion that fits into the convex portion is formed on the outer peripheral surface of the cordless handset 3.
By being housed inside, the concave portion fits with the convex portion,
The terminals to be charged 9 and 10 provided in the concave portion are brought into contact with the charging terminals 6 and 7 provided on the lower surface of the convex portion.

According to the above configuration, since the charging terminals 6 and 7 are provided on the lower surface of the convex portion, there is no possibility that the conductive terminals 11 such as pins and clips come into contact with the charging terminals 6 and 7. . However, the provision of the protrusions and recesses complicates the external shape of the charger main body 1 and the cordless handset 3, and the shapes of the molds for molding them are naturally complicated, and the cost of the mold is high. .

SUMMARY OF THE INVENTION In view of the above-mentioned conventional disadvantages, the present invention does not increase the number of parts, the external appearance of the charger main body and the cordless handset is simple, and conductive metals such as pins and clips contact the charging terminal. It is another object of the present invention to provide a charger in which a short circuit accident does not occur.

[0010]

According to a first aspect of the present invention, there is provided a charger body having a charging circuit and a pair of charging terminals connected to the charging circuit. By setting the object to be charged in the container body, a pair of terminals to be charged provided on the object to be charged are connected to the respective charging terminals, and the battery in the object to be charged is energized from the charging circuit. In the battery charger, each of the charging terminals has an elastically deformable outer terminal plate and an inner terminal plate facing each other at a predetermined interval, and the inner terminal plate is connected to the charging circuit, and the outer terminal An electrode protruding from the plate is projected to the outside through a through-hole penetrating through the charger body, and the outer terminal plate is elastically deformed by bringing the charged terminal into contact with the electrode. Contact the inner terminal board It is characterized in that.

In the above configuration, by setting the charged object in the charger main body, a pair of charged terminals of the charged object are brought into contact with the electrodes projecting into the storage recess, and each outer terminal plate is elastically deformed. Then, the battery comes into contact with the inner terminal plate, and electricity is supplied from the charging circuit to the battery to be charged, thereby charging the battery.

In this case, even if conductive metals such as pins and clips come into contact with the electrodes of the outer terminal plates, the outer terminal plates are not connected to the charging circuit, and a short circuit may occur. There is no need to provide special switches for preventing short-circuit accidents as before, and the number of parts does not increase.
Production costs can be reduced. In addition, the external shape of the charger main body and the object to be charged is simple, and the shape of the mold for molding them is naturally simple, so that the cost of the mold is low.

According to a second aspect of the present invention, there is provided a charger main body including a charging circuit and a pair of charging terminals connected to the charging circuit, and by setting an object to be charged in the charger main body, In a charger in which a pair of charged terminals provided on the charged object are connected to the respective charging terminals to supply electricity from the charging circuit to a battery in the charged object, the one charging terminals are spaced apart from each other by a predetermined distance. With an elastically deformable outer terminal plate and an inner terminal plate
The other charging terminal has only an outer terminal plate, and the inner terminal plate of the one charging terminal and the outer terminal plate of the other charging terminal are connected to the charging circuit, and protrude from the outer terminal plates of both charging terminals. The exposed electrode is projected outside through a through-hole provided in the charger main body, and by bringing the charged terminals into contact with the electrode, both outer terminal plates are elastically deformed, and one of the charging terminals is It is characterized in that an outer terminal plate is brought into contact with the inner terminal plate.

According to the above configuration, substantially the same operation and effect as those of the first aspect can be obtained. In particular, the other charging terminal has only the outer terminal plate, and the inner terminal plate is omitted. Therefore, the production cost can be reduced by the amount omitted.

The third aspect of the present invention provides the first or second aspect.
In the invention described above, the outer terminal plate and the inner terminal plate are fixed to an insulating substrate, and the insulating substrate is fixed to the charger main body.

According to the above configuration, the outer terminal plate and the inner terminal plate can be easily attached to predetermined positions in the charger main body only by fixing the insulating substrate to the charger main body.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the object to be charged comprises a cordless handset, and the cordless handset is detachably mounted on an upper surface of the charger main body. A storage recess for storing is formed, and the electrode protrudes into the storage recess through a through-hole penetrating through a side wall of the storage recess.

According to the above configuration, it is possible to prevent a short circuit accident of a charger in a cordless telephone or a portable telephone.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show a charger for a cordless telephone according to an embodiment of the present invention, in which an elastically deformable outer terminal plate 13 in which charging terminals 6 and 7 face each other at a predetermined interval. And an inner terminal plate 14. The outer terminal plate 13 and the inner terminal plate 14 are fixed to an insulating substrate 15, and the insulating substrate 15 is a fastener 1 such as a screw.
6, the inner terminal plate 14 is connected to the charging circuit 5, and an electrode 13 a protruding from the upper end of the outer terminal plate 13 penetrates the side wall of the storage recess 2. Through the housing recess 2. In the configuration other than the above, the same portions as those of the conventional example shown in FIGS. 6 to 8 are denoted by the same reference numerals, and description thereof will be omitted.

In the above configuration, the cordless handset (charged object) 3 is separated from the charger main body 1 (see the solid line in FIG. 1 and FIG. 2), and then the cordless handset 3 is turned on.
Is stored in the storage recess 2 (the virtual line in FIG. 1,
3 and 4), the terminals 9 and 10 to be charged are electrodes 13a.
Each of the outer terminal plates 13 is elastically deformed and is brought into contact with the inner terminal plate 14, so that the charging circuit 5 supplies electricity to the battery 8 to charge the battery 8.

In this case, as shown by phantom lines in FIG. 2, conductive metals 11 such as pins and clips are
3 even if it contacts the electrode 13a.
3 is not connected to the charging circuit 5 and there is no danger of a short circuit occurring. Therefore, it is not necessary to provide a special switch for preventing a short circuit as in the conventional example described above, and the number of parts does not increase. , The production cost can be reduced. In addition, the external shapes of the charger main body 1 and the cordless handset 3 are simple, and the shapes of the molds for molding them are naturally simple, so that the cost of the mold is cheap. Further, simply fixing the insulating substrate 15 to the charger main body 1 with the fastener 16 allows the outer terminal plate 1
3 and the inner terminal plate 14 can be easily attached to a predetermined position in the charger main body 1.

FIG. 5 shows a charger for a cordless telephone according to another embodiment of the present invention. One of the charging terminals 6 has an elastically deformable outer terminal plate 13 opposed to each other at a predetermined interval. And an inner terminal plate 14,
The other charging terminal 7 has only the outer terminal plate 13, and the inner terminal plate 14 of the one charging terminal 6 and the outer terminal plate 13 of the other charging terminal 7 are connected to the charging circuit 5. In the configuration other than the above, the same parts as those of the embodiment shown in FIGS.

According to the above configuration, substantially the same effects as those of the embodiment shown in FIGS. 1 to 4 can be obtained. In particular, the other charging terminal 7 has only the outer terminal plate 13, Since the inner terminal plate 14 (see FIG. 2) is omitted, the manufacturing cost can be reduced by the omitted amount.

In the above-described embodiment, a charger for a cordless telephone has been described as an example. However, the present invention is not limited to this. For example, the present invention is also applicable to a charger for charging a mobile phone or a battery for charging. can do.

[0025]

According to the first aspect of the present invention, even if conductive metals such as pins and clips come into contact with the electrodes of both outer terminal plates, the outer terminal plates are not connected to the charging circuit. Since there is no risk of short-circuit accident, there is no need to provide a special switch for short-circuit accident prevention as in the past,
The number of parts does not increase, and the manufacturing cost can be reduced.
In addition, the external shape of the charger main body and the object to be charged is simple, and the shape of the mold for molding them is naturally simple, so that the cost of the mold is low.

According to the second aspect of the invention, it is possible to obtain substantially the same operation and effect as the first aspect of the invention. In particular, the other charging terminal has only the outer terminal plate, and Since the plate is omitted, the manufacturing cost can be reduced by the omitted amount.

According to the third aspect of the present invention, the outer terminal plate and the inner terminal plate can be easily attached to predetermined positions in the charger main body only by fixing the insulating substrate to the charger main body.

According to the fourth aspect of the present invention, it is possible to prevent a short circuit accident of a charger in a cordless telephone or a portable telephone.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing a charger for a cordless telephone according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state where the cordless handset is separated from a charger main body.

FIG. 3 is a longitudinal sectional view showing a state where the cordless handset is set in a charger main body.

FIG. 4 is a cross-sectional view of the same.

FIG. 5 is a cross-sectional view showing a cordless telephone charger according to another embodiment of the present invention.

FIG. 6 is a partially cutaway side view showing a conventional example.

FIG. 7 is a cross-sectional view showing a state where the cordless handset is separated from a charger main body.

FIG. 8 is a cross-sectional view showing a state where the cordless handset is set in a charger main body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Charger main body 2 Storage recessed part 3 Cordless handset (charging target) 4 Power supply 5 Charging circuit 6,7 Charging terminal 8 Battery 9,10 Charging terminal 13 Outer terminal plate 14 Inner terminal plate 15 Insulating board 16 Fastener 17 Through hole

Claims (4)

[Claims] 1. A charger main body comprising a charging circuit and a pair of charging terminals connected to the charging circuit, wherein the charging target body is provided on the charging target body by setting the charging target body on the charger main body. In a charger in which a pair of terminals to be charged are connected to the respective charging terminals and the charging circuit supplies electricity to the battery in the object to be charged, the charging terminals are elastically deformed to face each other at a predetermined interval. It has a possible outer terminal plate and an inner terminal plate, the inner terminal plate being connected to the charging circuit, and an electrode protruding from the outer terminal plate passing through a through-hole penetrating through the charger body. A charger protruding to the outside, wherein the charged terminal is brought into contact with the electrode, whereby the outer terminal plate is elastically deformed and comes into contact with the inner terminal plate. 2. A charger main body comprising a charging circuit and a pair of charging terminals connected to the charging circuit, wherein the charging target is set on the charging target body by setting the charging target body on the charger main body. In a charger in which a pair of terminals to be charged are connected to the respective charging terminals so that the battery in the object to be charged is energized from the charging circuit, the one charging terminals face each other at a predetermined distance from each other. The charging terminal has a deformable outer terminal plate and an inner terminal plate, and the other charging terminal has only the outer terminal plate, and the inner terminal plate of the one charging terminal and the outer terminal plate of the other charging terminal are charged. The electrodes connected to the circuit and protruding from the outer terminal plates of both charging terminals protrude to the outside through through holes penetrating through the charger main body,
By charging the terminal to be charged to the electrode, both outer terminal plates are elastically deformed, and the outer terminal plate of one charging terminal is brought into contact with the inner terminal plate. vessel. 3. The charger according to claim 1, wherein the outer terminal plate and the inner terminal plate are fixed to an insulating substrate, and the insulating substrate is fixed to the charger main body. 4. The charging target comprises a cordless handset, a storage recess for removably storing the cordless handset is formed on an upper surface of the charger main body, and a penetrating hole penetrates a side wall of the storage recess. The charger according to any one of claims 1 to 3, wherein the electrode protrudes into the storage recess through a hole.