JPH05234762A - Chargeable electrical device - Google Patents

Abstract

PURPOSE:To enable easy grip and fitting to an existing washstand or shelf by further thinning the main body without making a secondary coil small. CONSTITUTION:This device is composed of a main body 1 wherein an opening part 1a is formed at an approximately right angle to a shaft center and a battery 3, etc., are built in a secondary coil 2 wound around a periphery of the opening part 1a and other places, and a stand 6 wherein a projection part 6a which is fit to the opening part 1a is formed and a primary coil 7 wound around a periphery of a shaft center thereof is built in an area near the projection part 6a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rechargeable electric device using a method of charging a storage battery using electromagnetic induction.

[0002]

2. Description of the Related Art There are three types of conventional rechargeable electric equipment, for example, electric toothbrushes as shown in FIGS. These are the secondary coil 2,
Main body 9 with built-in storage battery 3, rectifier, etc., and primary side coil 7 in the vicinity where main body 9 is mounted and secondary side coil 2 is located.
There is a stand 10 with a built-in and an electromagnetic induction type. The structural features of each are shown in FIG.
The type 9 has a feature that the main body 9 can be made thin, and the main body 9
The secondary side coil 2 is provided in the bottom surface of the secondary side coil 2, and the primary side coil 7 is disposed in the place where the secondary side coil 2 is included. Since the secondary side coil 2 is designed to be small, a high frequency electromagnetic induction charging circuit as shown in FIG. 14 is often used in place of the commercial frequency electromagnetic induction charging circuit as shown in FIG. In the second type shown in FIG. 11, the recess 11a is formed in the inner peripheral portion of the secondary coil 2,
The magnetic body 12a fitted in the recess 11a is projected from the primary coil 7 to increase the coupling coefficient between the primary coil 7 and the secondary coil 2 so that a large charging current can be obtained.
In the third type shown in FIG. 12, the secondary coil 2 is arranged in approximately half the length of the main body 13, and the primary coil 7 is arranged in the place where the secondary coil 2 is included. Thus, the facing area between the primary coil 7 and the secondary coil 2 is increased so that the charging current can be increased.

[0003]

In the rechargeable electric device as described above, since the secondary coil is wound around the axial direction of the main body, the thickness of the main body is further reduced and it is easy to grip. In order to pursue high quality, the secondary coil must be designed to be smaller. However, if the secondary coil becomes smaller, it is difficult to obtain a predetermined charging current, and a new circuit must be designed for this purpose.

Further, since the main body is placed upright and placed on a stand to be accommodated and charged, the height of this posture interferes with the installation and may not be installed on an existing washbasin or shelf.

The present invention has been made in view of the above circumstances, and an object thereof is to further reduce the thickness of the main body to make it easier to grip without reducing the size of the secondary coil. It is to provide rechargeable electric equipment that can be installed in correspondence with existing washbasins and shelves.

[0006]

In order to achieve the above object, in the rechargeable electric device of the present invention, an opening is formed in a direction substantially perpendicular to the axis and is wound around the opening. A secondary coil and a main body in which a storage battery or the like is built-in elsewhere, and a protrusion that fits into the opening are formed, and the coil is wound around its axis near the protrusion and connected to a power source. It is composed of a stand having a built-in primary coil.

[0007]

According to this structure, since the secondary coil is arranged in a direction substantially perpendicular to the axis of the main body, if the coil is made elongated in the direction of the axis of the main body without changing the size of the coil, the thickness of the main body can be increased. It can easily accommodate designs that are even thinner. In addition, since the opening is formed in a direction substantially perpendicular to the axis of the main body and engages with the protrusion of the stand, various postures of the main body that do not disengage can be appropriately selected.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a main body having an opening 1a formed at one end in the longitudinal direction and penetrating in a direction substantially perpendicular to the axis, and a secondary coil 2 wound around the opening 1a, A storage battery 3 connected to the secondary coil 2 via a rectifier (not shown), a motor 5 connected to the storage battery 3 via a switch 4, and a drive unit driven by the motor 5 (not shown). ) Etc. are built in. The opening 1a has an elongated hole shape in the longitudinal direction and is engaged with a protrusion of a stand described later so that the main body 1 maintains a predetermined posture. Secondary coil 2
Is wound around the opening 1a and is formed in a substantially similar shape to the opening 1a.

A stand 6 is formed with a protrusion 6a that engages with the opening 1a, and a primary coil 7 wound around its axis near the protrusion 6a and connected to a power supply. Built in. The protrusion 6a projects from the outer shell by a thickness of the main body 1, and has a cross-sectional shape similar to that of the opening 1a. The primary coil 7 is built in the protrusion 6a, and the protrusion 6a
Is wound around the axis of and is formed in a substantially similar shape to the opening 1a.

This device uses a high frequency electromagnetic induction charging circuit similar to the conventional one. Next, a modified example of the first embodiment of the present invention will be described with reference to FIGS. The same members as those of the above-described embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 3 shows a modified example of the primary coil 7 of the stand 6, which is wound around the vicinity of the root of the protruding portion 6a and penetrates the primary coil 7 at one end. The protrusion 6a
Magnetic body made of iron or ferrite etc.
Have eight. In this device, the end faces of the primary coil 7 and the secondary coil 2 are opposed to each other so that a large opposing area can be obtained, and the magnetic material 8 is used to increase the coupling coefficient.

FIG. 4 shows a modified example of the primary coil 7 of the stand 6, which is wound around the vicinity of the base of the protruding portion 6a and formed in a flat shape. This one includes the secondary coil 2 in a plan view.
The facing area between the secondary coil 7 and the secondary coil 2 is large.

FIG. 5 shows a modified example of the opening 1a of the main body 1 and the projecting portion 6a of the stand 6. The opening 1a has a round hole shape, and the projecting portion 6a has a cylindrical shape. A portion 6b is provided, and the engagement between the concave portion 1b and the convex portion 6b serves to prevent the main body 1 from rotating with respect to the stand 6.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be explained based on. The main part of the present invention is the opening of the main body 1.
1a and the protrusion 6a of the stand 6. Since the members other than this main part are the same as those in the first embodiment described above, the substantially same members are designated by the same reference numerals and detailed description thereof will be omitted.

The opening 1a has a round hole shape and a plurality of recesses 1c, 1c, ... Are provided on the peripheral surface. The protrusion 6a has a columnar shape, and a single protrusion 6b is provided on the circumferential surface.

In this case, since the concave portion 1c to be engaged with the convex portion 6b can be appropriately selected, the posture of the main body 1 can be set as many as the concave portions 1c. As a result, by tilting the main body 1 with respect to the stand 6, the main body 1 can be installed in a limited space of the sink as shown in FIG.

It is to be noted that the opening 1a and the projection 6a are engaged with each other in a rotation preventing manner by making the opening 1a into a regular polygonal hole shape as shown in FIG. It may be configured to have a prismatic shape.

Further, as shown in FIG. 9, the stand 6 is
Projection 6a and stand body 6c that pivotally mounts this projection 6a
And a tension spring 6d for bringing the protrusion 6a into contact with the stand body 6c side, the protrusion 6a having a single convex portion 6b provided on the peripheral surface is provided in the rotation direction with respect to the stand body 6c. The position may be variable. The protrusion 6a includes a flange 6e that engages with an opening (not shown), and a plurality of recesses 6f, 6f on the same circumference on the side of the flange 6e that faces the stand body 6c.
And has a cylindrical shaft portion 6g on the central axis.
The stand body 6c includes a hole portion 6h for supporting the shaft portion 6g on the axis of the primary coil 7, an engaging portion 6i for engaging the recess portion 6f on the side facing the collar portion 6e, and a washstand on the back surface. It has a suction cup 6j that is attached to the wall surface of and supports itself. One of the tension springs 6d is hooked on the bottom part of the hole 6h and the other is hooked on the flange 6e, and the protrusion 6a is pulled toward the stand body 6c. In this product, the protrusion 6a is pulled away from the stand body 6c side against the pulling force of the tension spring 6d to disengage the engagement portion 6i from the recess 6f, and then rotated to rotate the protrusion 6b in the desired direction. The position of the convex portion 6b can be changed with respect to the stand body 6c by selecting the concave portion 6f to be directed and engaging with the locking portion 6i. By using this stand 6, the posture of the main body (not shown) having the opening (not shown) corresponding to the protruding portion 6a can be tilted in the desired direction.

[0020]

In the rechargeable electric device of the present invention, since the secondary coil is arranged in the direction substantially perpendicular to the axis of the main body, the coil can be elongated in the direction of the axis of the main body without changing the size of the coil. Therefore, it is possible to easily support a design in which the thickness of the main body is further reduced. Further, the opening is formed in a direction substantially perpendicular to the axis of the main body,
Since it engages with the protruding portion of the stand, various postures of the main body that do not disengage can be appropriately selected, so that it can be installed corresponding to an existing washbasin or shelf.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing a first embodiment of the present invention.

FIG. 2 is likewise an external view, (a) is a perspective view,
(b) is a plan view of the main body.

FIG. 3 is likewise a cross-sectional view of an essential part showing a modified example.

FIG. 4 is likewise a sectional view of a main part showing a modified example.

FIG. 5 is likewise an external perspective view showing a modified example.

FIG. 6 is a plan view showing a second embodiment of the present invention.

FIG. 7 is likewise an external perspective view showing a state of installation on a wash basin.

FIG. 8 is likewise a plan view of a main body showing a modified example.

FIG. 9 is likewise a stand showing a modified example, in which (a) is a plan view and (b) is a sectional view.

FIG. 10 is a cross-sectional view of a main part showing a conventional example.

FIG. 11 is a cross-sectional view of a main part showing a conventional example.

FIG. 12 is a cross-sectional view of an essential part showing a conventional example.

FIG. 13 is an electromagnetic induction charging circuit diagram at a commercial frequency of a conventional example.

FIG. 14 is a high-frequency electromagnetic induction charging circuit diagram of a conventional example.

[Explanation of symbols]

 1 Main body 1a Opening 2 Secondary coil 6 Stand 6a Projection 7 Primary coil

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[Procedure amendment]

[Submission date] July 19, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

In this case, since the concave portion 1c to be engaged with the convex portion 6b can be appropriately selected, the posture of the main body 1 can be set as many as the concave portions 1c. Thus, it is possible to tilt the main body 1 with respect to the stand 6 can be installed in a washbasin of limited space, such as shown in FIG.

Claims (1)

[Claims] 1. An opening is formed in a direction substantially perpendicular to an axis,
A secondary coil wound around the opening, a main body having a storage battery, etc. built in elsewhere, and a protrusion that fits into the opening are formed, and the axial center thereof is provided in the vicinity of the protrusion. A rechargeable electric device of an electromagnetic induction type, which includes a stand that is wound around and has a built-in primary coil that is connected to a power supply.