JP2001016789A - Noncontact battery charger device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a noncontact battery charger device which has a main body housing, constituted by combining vertically split housing parts and can surely charge a battery in a noncontacting state. SOLUTION: A noncontact battery charging device is constituted, in such a way that a secondary coil 6 is arranged on the bottom 2 of the main body 1, and a primary coil 6 is arranged under the main body placing section 4 of a battery charger 3, so that the secondary coil 6 arranged on the bottom of the main body 1 is induced electromagnetically, and a battery 7 in the main body 1 is charged, when the main body 1 is placed on the main body placing section 4 of the battery charger 3. A housing 8 of the main body 1 is constituted by combining a plurality of housing parts 9 which are vertically split along planes cutting the secondary coil 6, and of the housing parts 9, one parts 10 has a bottom wall 12 which is continuously formed from its outer peripheral wall 11 and on which the secondary coil 6 is arranged. In addition, the external surface 12b of the wall 12 becomes the surface 13, which comes into contact with the main body placing section 4 of the charger 3 when the battery 7 is charged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless charging device, and more particularly, to a housing on a main body of the wireless charging device.

[0002]

2. Description of the Related Art In a non-contact charging device, the distance between a primary coil in a charger and a secondary coil in a main body must be at least constant. That is, it is important to supply a stable charging current to the main body when the thickness of the mutual contact portion of the charger and the housing of the main body between the primary side coil and the secondary side coil is constant. . For example, if the thickness differs depending on the location, the charging current of the charging circuit changes, and the amount of charge necessary for the operation of the main body cannot be obtained, or the charging current differs each time the charging is performed, and the operation of the main body differs. A situation occurs in which the time changes each time. In particular, when the housing of the main body is formed by combining housing parts obtained by dividing the housing of the main body into two parts vertically, a step may be generated between the joined housing parts at the bottom of the housing. This causes a problem that the distance between the secondary coils varies and the charging current is likely to change.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made in consideration of the above circumstances. In a body in which a housing of a main body is formed by combining vertically divided housing parts, a non-contact charging that can reliably perform non-contact charging is provided. It is intended to provide a contact charging device.

[0004]

According to a first aspect of the present invention, there is provided a non-contact charging device in which a secondary coil is disposed on a bottom portion of a main body and a lower portion of a main body mounting portion of a charger. When the main body 1 is placed on the main body mounting portion 4 of the charger 3, the primary coil 5 is arranged on the bottom 2 of the main body 1 by the primary coil 5 disposed below the main body mounting portion 4. In the non-contact charging device in which the secondary coil 6 is electromagnetically induced and the storage battery 7 in the main body 1 is charged, the housing 8 of the main body 1 is divided into a plurality of housings that are divided by a surface that passes through the secondary coil 6. It is configured by combining parts 9, and among a plurality of housing parts 9,
One housing component 10 has a bottom wall 12 formed continuously with its outer peripheral wall 11, a secondary coil 6 is disposed on an inner surface 12 a of the bottom wall 12, and an outer surface 12 b of the bottom wall 12 is charged. In this case, the contact surface 13 of the charger 3 with the main body mounting portion 4 is provided.

According to a second aspect of the present invention, in addition to the structure of the first aspect, the housing 8 of the cylindrical main body 1 is divided into two parts by a plane including the axial center line thereof. One of the housing parts 10 has a substantially circular bottom wall 12 formed continuously with an outer peripheral wall 11 of the housing part 10, and the secondary coil 6 is formed on an inner surface 12 a of the bottom wall 12. An outer surface 12 of the bottom wall 12
b is a contact surface 13 of the charger 3 with the main body mounting portion 4 during charging.
It is characterized by the following.

According to a third aspect of the present invention, in addition to the structure of the first or second aspect, the non-contact charging device further comprises
The connecting portion 14 between the housing and the other housing part 9 is
5 is characterized.

According to a fourth aspect of the present invention, in addition to the configuration of the first to third aspects, the connecting portion is formed by an arc-shaped uneven fitting portion. It is characterized by the following.

According to a fifth aspect of the present invention, there is provided a non-contact charging device according to any one of the first to fourth aspects, wherein a concave portion 16 is provided in a central portion 12c of an outer surface 12b of the bottom wall 12. It is characterized by the following.

According to a sixth aspect of the present invention, there is provided a non-contact charging device according to any one of the first to fifth aspects, wherein the secondary coil 6 having the inner surface 12a of the bottom wall 12 is provided. It is characterized in that it is formed on the uneven surface 17 according to the shape.

According to a seventh aspect of the present invention, in addition to the structure of any one of the first to sixth aspects, another housing part 9 is locked to an end portion 12d of the bottom wall 12. The hook 18 is provided.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In the embodiments of the present invention described below, a hair cutter provided with the non-contact charging device of the present invention will be described as an example. 1 to 7 show an example of the hair cutter. This hair cutter comprises a main body 1 and an attached charger 3. The outer shell of the main body 1 includes a cylindrical housing 8 having an upper bottom 8a and a lower bottom 8b, and a blade mount 22 connected to the upper bottom 8a of the housing 8. A blade 19 composed of a comb-shaped fixed blade 20 and a movable blade 21 that are in sliding contact with each other is attached to the tip of the blade block 57 that forms the inclined portion 22a of the blade mount 22. The blade block 57 is fixed by a blade block fixing spring 23 attached to the upper surface of the inner wall 22a of the blade mount 22 with screws 58. The housing 8 is formed by combining two housing parts 9, 9 divided by a plane including the center line in the axial direction and a plane parallel to the cutting edge of the blade 19. Of the housing parts 9, 9 constituting the front half and the rear half of the housing 8, the housing part 9 (hereinafter referred to as the housing part 10) constituting the front half of the housing 8 is continuous with the outer peripheral wall 11. Thus, a substantially circular bottom wall 12 is formed (details of the bottom wall 12 of the housing component 10 are shown in FIG. 6).

The main body 1 is constructed as follows. First, as shown in FIG. 7, a motor 29, a switch base 30, a switch fitting 31, a storage battery 27, a charging circuit 28, a secondary coil 6, and a charging indicator lamp 52 are disposed on the base block 26. The block 26 is arranged on the housing part 10. When the motor 29 is provided, the output shaft 29a of the motor 29 is fitted in the lower hole 33a of the eccentric cam 33 and the shaft 41 is fitted in the upper hole 33c of the eccentric cam 33 in advance. Collar part 33b
Into the groove 34a of the upper wall 34 of the housing component 10 (FIG. 1). Subsequently, the housing part 9 is fitted to the housing part 10. Here, the bottom wall 1 of the housing component 10
An uneven fitting portion 15 is formed at a connecting portion 14 between the housing 2 and the edge 53 of the housing component 9 so that the two can be easily connected. That is, as shown in FIG. 6, a pair of left and right convex portions 51 is provided at the rear end of the semicircular portion of the front half 12e of the bottom wall 12 of the housing component 10, and the rear half 12f of the bottom wall 12 is formed. Semicircular convex portion 24
On the other hand, the edge 53 of the housing component 9 is provided with a semicircular recess 25 into which the projection 51 and the projection 24 can be fitted (FIG. 5). By doing so, the housing component 9 can be positioned with respect to the housing component 10, and the connection between the housing component 10 and the housing component 9 can be easily performed. At this time, the flange 33b of the eccentric cam 33 is in a state of being fitted into a groove 35a provided in the upper wall 35 of the housing component 9 (FIG. 1).
When the housing component 9 is combined with the housing component 10, the motor 29, the storage battery 27, and the housing component 9
And the cushion 50 is put between them. Then, the hole 36 of the housing part 10 and the hole 3 of the base block 26
7 and the screw 39 through the hole 38 of the housing part 9
The housing component 10, the base block 26, and the housing component 9 are completely fixed, and the sliding power switch handle 32 is attached to the front surface 10a of the housing 10.
The locking piece 32a of the power switch handle 32 is locked to the locking portion 30a of the switch base 30 disposed on the base block 26. Subsequently, the blade mounting base 22 is connected to the upper bottom portion 8a of the housing 8, and at the same time, the lower hole 40a of the driver 40 mounted on the movable blade 21 above the shaft 41 fitted in the upper hole 33c of the eccentric cam 33.
To complete the assembly of the main body 1 (FIG. 2).

Next, the charger 3 will be described. Charger 3
As shown in FIG. 3, the battery pack comprises a column-shaped main body supporting portion 46 and a pedestal-shaped main body mounting portion 4, the outer shell of which is formed by the charger case 43.
Is derived. The main body guide 42 is mounted on the upper end of the main body support portion 46, the cylindrical main body 1 is sandwiched between the two guide pieces 42 a, and the bottom wall 12 of the main body 1 is placed at the proper position of the main body mounting portion 4. In addition to guiding, the bottom wall 12 of the main body 1 is prevented from being displaced from the proper position of the main body mounting portion 4 due to vibration or the like during charging, and the main body 1 is overturned. The main body mounting portion 4 is provided with a convex portion 4b indicating a proper position for mounting the bottom wall 12 of the main body 1 on the upper surface of the mounting wall 4a of the main body mounting portion 4. The lower part of the charger case 43 is open, and after the charger circuit 44 and the primary coil 5 are disposed therein, the bottom cover 4 is closed.
It is closed at 5. The primary coil 5 in the charger circuit 44 is provided with a convex portion 4b provided on the body mounting portion 4 and indicating a normal position.
Are disposed so that the coil center is located immediately below the center of the coil. The primary coil 5 is configured by winding a winding 49 around a coil bobbin 48, and is connected to the charger circuit 44, and the upper surface of the coil bobbin 48 is positioned on the lower surface of the mounting wall 4 a of the main body mounting portion 4. (FIG. 1). Attachments 5 are provided on the side of the bottom cover 45 of the charger 3 to make the cut height of the cut hair uniform.
5 is provided with a pocket 47.

Next, a housing part 1 which is a main part of the present invention.
0, a substantially circular bottom wall 12 formed continuously with the outer peripheral wall 11
Will be described. As described above, a pair of left and right convex portions 51 is provided at the rear end of the semicircular portion of the front half 12 e of the bottom wall 12 of the housing component 10, and the outer peripheral portion of the rear half 12 f of the bottom wall 12. Is provided with a semicircular convex portion 24, while the edge portion 53 of the housing component 9 is provided with the convex portion 5.
There is provided a semicircular recess 25 into which the projection 1 and the projection 24 can be fitted. As described above, the connection portion 14 between the bottom wall 12 of the housing component 10 and the edge 53 of the housing component 9 is formed by the concave-convex fitting portion 15, so that the bottom wall 12 of the housing component 10 is formed.
And the housing component 9 can be easily connected.
Further, by forming the concave and convex fitting portion 15 in an arc shape,
Even if the bottom wall 12 of the housing component 10 receives a strong force, the strength of the connecting portion 14 between the bottom wall 12 and the housing component 9 can be secured. Further, as shown in FIG. 5, the secondary coil 6 configured by winding the winding 49 around the coil bobbin 48 is disposed immediately below the charging circuit 28 such that the coil center is located on the center axis of the main body 1. Is done. The inner surface 12a of the bottom wall 12 of the housing component 10 is formed on the uneven surface 17 according to the shape of the secondary coil 6, that is, the coil bobbin 48 to be disposed. 12a.
Thereby, when disposing the secondary coil 6 on the bottom wall 12,
The positioning of the secondary coil 6 can be reliably performed.
Also, a concave portion 1 is formed in a central portion 12c of the outer surface 12b of the bottom wall 12.
6 is provided. When the main body 1 is placed on the main body mounting portion 4 of the charger 3, even if there is a small foreign matter on the main body mounting portion 4 of the charger 3, the primary coil 5 is connected to the main body 1. This is to keep the distance between the secondary coils 6 constant. FIG.
The housing part 9 is attached to the end 12d of the bottom wall 12 as shown in FIG.
It is more preferable to provide the hook 18 for locking the housing part 9 because the housing part 9 can be prevented from opening to the bottom wall 12.

Next, an operation when the main body 1 is charged will be described. First, after the power cord 56 of the charger 3 is connected to an outlet, the main body 1 is inserted into the main body guide 42 of the charger 3 with the main body 1 standing upright, and the center axis of the main body 1 is positioned on the main body mounting portion of the charger 3. 4 is slowly placed on the main body placing portion 4 so as to come to the regular position. At the same time, the primary coil 5 disposed below the main body mounting portion 4 causes the inner surface 12 of the bottom wall 12 of the main body 1 to be moved.
The secondary coil 6 disposed at a is electromagnetically induced, and the storage battery 7 in the main body 1 is charged. When the center axis of the main body 1 is located at the regular position of the main body mounting portion 4 of the charger 3, the coil centers of the primary coil 5 and the secondary coil 6 are on the same straight line (X in FIG. 1).
-X-ray), efficient charging is performed. On the other hand, when the central axis of the main body 1 is displaced from the normal position of the main body mounting portion 4 of the charger 3, the primary coil 5 and the secondary coil Since the coil center of No. 6 shifts, the charging efficiency decreases in proportion to the shift. Further, it is important that the distance T between the primary coil 5 of the charger 3 and the secondary coil of the main body 1 be constant in order to supply a stable charging current to the main body 1. For example, if the distance T differs depending on the location, the charging circuit 2
8, the charging current required for the operation of the main body may not be obtained, or the charging current may be different each time the charging is performed, and the operating time of the main body may change every time. As shown in the example, a substantially circular bottom wall 12 is formed continuously with the outer peripheral wall 11 of the housing component 10 and the bottom wall 1 is formed.
The secondary coil 6 is disposed on the inner surface 12a of the
By making the outer surface 12b of the second member 2 a contact surface 13 with the main body mounting portion 4 of the charger 3 during charging, the housing of the main body was formed by combining the conventional vertically divided housing parts. There is no concern that a step may occur between the housing components joined at the bottom of the housing as in the case, and the distance T between the primary coil 5 and the secondary coil 6 can be kept constant. A stable charging current can be supplied.

[0016]

According to the first aspect of the present invention, there is provided a housing between housing parts joined at the bottom of the housing as in the case of a conventional housing which is formed by combining two vertically divided housing parts. Since there is no concern that a step may occur in the main body, the distance between the primary side coil and the secondary side coil can be reliably kept constant, so that a stable charging current can be supplied to the main body.

Further, according to the second aspect of the present invention, in addition to the effect of the first aspect, it is possible to easily realize a configuration having the above effect.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect, connection between the bottom wall and other housing parts can be easily performed.

Further, in the invention according to claim 4 of the present invention, in addition to the effects of the invention according to any one of claims 1 to 3, even if the bottom wall is subjected to a strong force, the bottom wall and the bottom wall may be separated from each other. The strength of the connection part of the housing component can be ensured.

According to a fifth aspect of the present invention, in addition to the effects of the first to fourth aspects, when the main body is placed on the main body mounting portion of the charger, Even if there is a small foreign matter on the main body mounting portion of the charger, the distance between the primary coil and the secondary coil is kept constant.

According to a sixth aspect of the present invention, in addition to the effects of the first aspect, when the secondary coil is disposed on the bottom wall, The positioning of the secondary coil can be reliably performed.

In the invention according to claim 7 of the present invention, in addition to the effect of the invention according to any one of claims 1 to 6, it is possible to prevent other housing parts from opening with respect to the bottom wall. Can be prevented.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention, and is a longitudinal sectional view of a hair cutter and a charger during charging.

FIG. 2 (a) is a rear view of a hair cutter,
(B) is a side view of the hair cutter, (c) is a front view of the hair cutter, and (d) is a bottom view of the hair cutter.

FIG. 3 is a front view of the charger.

FIG. 4 is a front view of the hair cutter and the charger at the time of charging the same.

FIG. 5 is a vertical cross-sectional view of a portion where a secondary coil of the hair cutter is provided.

FIG. 6A is a bottom view of the bottom wall of one housing component constituting the housing of the hair cutter, FIG. 6B is a cross-sectional view taken along line AA of FIG. 6A, and FIG. FIG.

FIG. 7 is an exploded perspective view of the same hair cutter.

8A and 8B show another example of the embodiment of the present invention, in which FIG. 8A is a longitudinal sectional view of a portion where a secondary coil of a hair cutter is provided,
(B) is a bottom view of the bottom wall of one housing part constituting the housing of the hair cutter, and (c) is a bottom view of the edge of the other housing part constituting the housing of the hair cutter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Bottom part 3 Charger 4 Main body mounting part 5 Primary side coil 6 Secondary side coil 7 Storage battery 8 Housing 9 Housing part 10 Housing part 11 Outer peripheral wall 12 Bottom wall 12a Inner surface 12b Outer surface 12c Central part 12d End part 13 Contact surface 14 connection part 15 concave and convex fitting part 16 concave part 17 concave and convex surface 18 hook

Claims (7)

[Claims] 1. A secondary coil is disposed at a bottom of a main body, and a primary coil is disposed under a main body mounting portion of a charger.
When the main body is mounted on the main body mounting portion of the charger, the secondary coil disposed at the bottom of the main body is electromagnetically induced by the primary coil disposed under the main body mounting portion, and the storage battery in the main body is charged. In the non-contact charging device, the housing of the main body is configured by combining a plurality of housing parts divided by a surface that vertically traverses the secondary coil, and among the plurality of housing parts, one housing part includes an outer peripheral wall. A bottom wall is continuously formed, a secondary coil is disposed on an inner surface of the bottom wall, and an outer surface of the bottom wall serves as a contact surface with a main body mounting portion of the charger during charging. Characteristic non-contact charging device. 2. A housing of a cylindrical main body is formed by combining housing parts divided into two by a plane including a center line in the axial direction, and one of the housing parts has a substantially circular shape continuous with its outer peripheral wall. A bottom wall is formed, a secondary coil is disposed on an inner surface of the bottom wall, and an outer surface of the bottom wall is a contact surface with a main body mounting portion of the charger during charging. The wireless charging device according to claim 1. 3. The non-contact charging device according to claim 1, wherein a connecting portion between the bottom wall and another housing component is constituted by an uneven fitting portion. 4. The non-contact charging device according to claim 1, wherein the connecting portion is formed by an arc-shaped concave-convex fitting portion. 5. The non-contact charging device according to claim 1, wherein a concave portion is provided in a central portion of an outer surface of the bottom wall. 6. The non-contact charging device according to claim 1, wherein the inner surface of the bottom wall is formed on an uneven surface in accordance with the shape of a secondary coil on which the bottom wall is disposed. 7. The wireless charging device according to claim 1, wherein a hook for locking another housing component is provided at an end of the bottom wall.