JPH05167498A - Charger - Google Patents

Abstract

PURPOSE:To provide the charger in which the safety is enhanced by devising a charge terminal of a battery pack not to be exposed externally so as to improve the external appearance. CONSTITUTION:A guide hole 6 is formed to a bottom face of a small sized battery pack 4 and a large sized battery pack mounted to a portable telephone set main body 3 at a same position from a rear side and a charging terminal 8 is provided in the guide hole 6. A movable charging terminal 13 is supported while being ejected and retracted to the guide projection 18 provided to a bottom face 17 of a pocket 15 of a charger main body 12 and energized in a projection state with a compression spring. While the battery pack 4 is loaded to the portable telephone set main body 3, the main body is contained in the pocket 15 of the charger main body 12, the guide hole 6 is fitted to the guide projection 18, the charger terminal 8 is in contact with the movable charger terminal 13 to charge the battery. When the light small sized battery pack 4 is in use, the escaping is prevented by the engagement between an engagement recessed part and an engagement projection 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging device which is mounted on a mobile phone and can be commonly used for charging batteries of battery packs having different outer dimensions due to different battery capacities.

[0002]

2. Description of the Related Art Conventionally, as a charging device of this type, a configuration as shown in FIGS. 6 to 10 has been known.

FIG. 6 shows a conventional charging device, which is a perspective view of a state where a mobile phone is not housed in a charger, and FIGS. 7 (a) and 7 (b) are used for the charging device and a small battery pack is attached. A rear view and a bottom view showing a mobile phone, FIGS. 8A and 8B are used for the same charging device, and a rear view and a bottom view showing a mobile phone equipped with a large battery pack, and FIG. 9 shows the same charging device. FIG. 10 is a partially cutaway side view of a state in which a small battery pack attached to a mobile phone body is being charged. FIG. 10 shows the same charging device, which is a portion of a state in which a large battery pack attached to the mobile phone body is being charged. It is a fracture | rupture side view.

In FIGS. 6 to 10, reference numeral 51 is a mobile phone, and 52 is a charger. The mobile phone 51 has a small battery pack 54 or a large battery pack 55 mounted on the back side of the mobile phone main body 53. Large battery pack 5
5, both end portions and the lower end portion have the same thickness as that of the small battery pack 54, and a rearward projecting portion 56 for accommodating a battery having a large capacity is formed inside thereof. .. A plurality of charging terminals 57 and 58 are provided on the lower ends of the small battery pack 54 and the large battery pack 55 on the back side, respectively.

The charger 52 comprises a charger main body 59, a plurality of movable charging terminals 60, a charging circuit board 61 and the like. A large pocket 62 is formed on the charger main body 59,
On the back of the large pocket 62, sloped wall surfaces 63 on both sides and the bottom are provided.
And the inside of them is recessed in the back and small pockets 6
4 are formed. A bottom surface 65 of the large pocket 62 is formed in a direction perpendicular to the inclined wall surface 63, and the lower portion of the main body 53 of the mobile phone and the small battery pack 54 attached to the main body are housed in a state of being tilted backward, or the mobile phone. With the main body 53 and the large battery pack 55 attached thereto tilted backward, the mobile phone main body 53 and the large battery pack 5
The size is set so that the lower end portion of 5 and the lower portion of the thin portion of both end portions can be accommodated. The small pocket 64 is set to a size capable of accommodating the lower side portion of the protruding portion 56 of the large battery pack 55. Inclined wall 6
Holes 66 are formed at a plurality of positions on the bottom of the hole 3, and the tip of the movable charging terminal 60 made of a leaf spring is projected from each hole 66 so as to be retractable. Each movable charging terminal 60 is connected to a charging circuit board 61 supported inside the charger main body 59.

The operation of the above configuration will be described below. As shown in FIGS. 6, 7 and 9, the small battery packs 54 are attached to the mobile phone main body 53, and the lower portions thereof are stored in the large pocket 62 of the main body 59 of the charger 52 connected to the power source. This allows the small battery pack 5
4 charging terminal 57 is a movable charging terminal 60 of the charger main body 59
It is possible to supply the charging current from the charging circuit board 61 to the batteries in the small battery pack 54 through the charging terminals 60 and 57 by utilizing its elasticity.

As shown in FIGS. 8 and 10, with the large battery pack 55 attached to the mobile phone main body 53, the lower end of the mobile phone main body 53 and the large battery pack 55 and under the thin portions on both side ends. The side portion is stored in the large pocket 62 of the charger main body 59, and the protruding portion 5 of the large battery pack 55 is accommodated.
The lower part of 6 is stored in the small pocket 64. As a result, the charging terminal 58 of the large battery pack 55 is brought into contact with the movable charging terminal 60 of the charger main body 59 by utilizing its elasticity, and the battery in the large battery pack 55 is charged from the charging circuit board 61 via the charging terminals 60 and 58. Can be supplied with charging current.

As described above, according to the above-mentioned conventional charging device, the same charger 52 can be used for charging by matching the outer dimensions of the small battery pack 54 and the large battery pack 55 having different battery capacities. ..

[0009]

However, in the above-mentioned conventional charging device, the charging terminals 57, 5 of the battery packs 54, 55 are not provided.
Since 8 is exposed and can be easily touched from the outside,
It may be damaged or the terminals may short-circuit. Also, the appearance is not good. In this way, there was a problem with the safety and aesthetics of the product.

The present invention solves such a conventional problem, so that the charging terminal of the battery pack can be prevented from being exposed to the outer surface to enhance the safety and improve the appearance. It is an object of the present invention to provide a charging device having the above structure.

[0011]

In order to achieve the above object, the present invention provides a guide hole formed at the same position from the back on the bottom surface of a small battery pack and a large battery pack to be mounted on the body of a mobile phone. , A charger main body having a charging terminal provided in the guide hole and a pocket large enough to accommodate the large-sized battery pack mounted in the mobile phone main body, and a position close to the reference wall surface on the bottom surface of the pocket And a guide protrusion that is fitted in a guide hole of the small battery pack or the large battery pack, a movable charging terminal that protrudes backward from the guide protrusion and is in contact with the charging terminal, And a charger having a spring for urging the movable charging terminal in a protruding state.

In the above technical means, an engaging projection is provided on the reference wall surface of the charger main body, and the engaging projection is engaged on the back surface of the small battery pack to set the charging terminal as a movable charging terminal. It is possible to provide an engaging recess for keeping the contact state and to form a groove for allowing the engaging projection to escape on the back surface of the large battery pack.

[0013]

Therefore, according to the present invention, by storing the small battery pack or the large battery pack in the mobile phone body in the pocket of the charger main body so that the back surface of the battery pack is along the reference wall surface, Since the guide holes for the small battery pack and the large battery pack and the charging terminals inside are located at the same position, fit the guide holes of each battery pack into the guide protrusions at the bottom of the pocket, and It is possible to charge the battery in the battery pack by bringing the charging terminal of the above into contact with the movable charging terminal which is projected from the guide projection by the elasticity of the spring. By providing the charging terminal of each battery pack in the guide hole as described above, it cannot be touched from the outside and can be hidden from the outer surface.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a charging device according to an embodiment of the present invention, which is a perspective view of a state in which a mobile phone is not housed in a charger, and FIGS. 2 (a) and 2 (b) are used for the charging device and are small in size. 3A and 3B are partial rear and bottom views showing a mobile phone equipped with a battery pack, and FIGS. 3A and 3B are partial rear and bottom views showing a mobile phone equipped with a large battery pack used in the same charging device. FIG. 4 shows the same charging device, and is a partially cutaway side view showing a state where a small battery pack attached to a mobile phone body is being charged. FIG. 5 shows the charging device and a large battery pack attached to the mobile phone body. FIG. 3 is a partially cutaway side view showing a state where the battery is being charged.

In FIGS. 1 to 5, 1 is a mobile phone and 2 is a charger. The mobile phone 1 has a small battery pack 4 or a large battery pack 5 mounted on the back side of a mobile phone body 3. Guide holes 6 and 7 are formed at the same position from the back side on both sides of the bottom surface of the small battery pack 4 and the large battery pack 5, and a pair of charging terminals 8 and 9 are provided in each of the guide holes 6 and 7. Has been. An engaging recess 10 for engaging with an engaging projection 22 of a charger main body 12, which will be described later, is formed on the lower back surface of the small battery pack 4, and the engaging projection 22 is released on the lower back surface of the large battery pack 5. Groove 11 is formed, and the lower end of the groove 11 is open.

The charger 2 is composed of a charger body 12, a movable charging terminal 13, a charging circuit board 14 and the like. A pocket 15 is formed in the charger body 12. The back surface of the pocket 15 becomes a reference wall surface 16 that gradually inclines backward as it reaches the upper portion, and the bottom surface 17 is formed in a direction perpendicular to the reference wall surface 16. The pocket 15 is set to a size capable of accommodating the lower portion of the mobile phone body 3 with the large battery pack 5 attached thereto. The bottom surface 17 is integrally provided with guide protrusions 18 that can be fitted to the guide holes 6 of the small battery pack 4 or the guide holes 7 of the large battery pack 5 on both sides of the position close to the reference wall surface 16. ing. A pair of pin-shaped movable charging terminals 13 is supported by each of the guide protrusions 18 so as to be retractable. A compression spring 21 is provided on the outer periphery of the movable charging terminal 13 between a spring bearing 19 provided on the outer periphery of the intermediate portion of the movable charging terminal 13 and a spring bearing 20 provided on the inside of the charger body 12, and the compression spring 21 is moved by the elasticity of the compression spring 21. The charging terminal 13 is biased in a protruding state so as to be retractable. At the center of the reference wall surface 16, an engaging projection 22 for engaging with the engaging recess 10 of the small battery pack 4 housed in the pocket 15 together with the mobile phone body 3 and preventing the small battery pack 4 from slipping out of the pocket 15.
Are provided integrally. Each movable charging terminal 13 is electrically connected by a lead wire 23 to a charging circuit board 14 supported in the charger body 12.

The operation of the above arrangement will be described below. As shown in FIG. 1, FIG. 2 and FIG. 4, with the small battery pack 4 attached to the mobile phone main body 3, the lower part thereof is stored in the pocket 15 of the main body 12 of the charger 2 which is connected to the power source. The guide hole 6 of the battery pack 4 is fitted into the guide protrusion 18 of the pocket 15 so that the small battery pack 4
The engaging recess 10 is engaged with the engaging projection 22 of the pocket 15. As a result, the movable charging terminal 13 of the pocket 15 is retracted against the elasticity of the compression spring 21 at the charging terminal 8 of the small battery pack 4, the charging terminal 8 is brought into contact with the movable charging terminal 13, and the charging circuit board 14 charges the charging terminal. A charging current can be supplied to a battery (not shown) in the small battery pack 4 via 13, 8. The small battery pack 4 is lightweight,
The compression spring 21 may be pushed upward by the repulsion elasticity, but as described above, the engaging recess 10 is engaged with the engaging projection 22 to prevent the small battery pack 4 from slipping off, and the charging terminal 8 is movable and charged. It is possible to hold the terminal 13 in a state of surely contacting it.

As shown in FIGS. 3 and 5, with the large-sized battery pack 5 mounted on the mobile phone main body 3, the lower portion of the large-sized battery pack 5 is placed in the pocket 15 of the charger main body 12 and the back surface of the large-sized battery pack 5 is the reference wall surface 16. Store along the line. At this time,
The engaging projection 22 of the pocket 15 can be released by the groove 11. With this storage, the guide hole 7 of the large battery pack 5 is fitted into the guide protrusion 18 of the pocket 15. The charging terminal 9 in the guide hole 7 due to the weight of the large battery pack 5
The movable charging terminal 13 of the pocket 15 is retracted against the elasticity of the compression spring 21, the charging terminal 8 is brought into contact with the movable charging terminal 13, and the large battery pack 5 is charged from the charging circuit board 14 via the charging terminals 13 and 9. A charging current can be supplied to a battery (not shown) therein. In the case of the large-sized battery pack 5, there is no possibility that it will be pushed up by the repulsive elasticity of the compression spring 21 due to its own weight, and the charging terminal 9 can be used as a movable charging terminal.
Since it can be kept in contact with 3 at all times,
It is not necessary to engage with the engaging projection 22.

As described above, according to the above-described embodiment, the guide holes 6 and 7 are formed at a common distance from the back surfaces of the small battery pack 4 and the large battery pack 5, and the charging terminal 8 is provided in the guide holes 6 and 7. , 9 are provided, they can be charged using the same charger 2. Since the charging terminals 8 and 9 are provided in the guide holes 6 and 7 as described above, it is possible to prevent the charging terminals 8 and 9 from being damaged or short-circuited from the outside, thereby improving safety. In addition, the appearance can be improved.

[0021]

As described above, according to the present invention, the back surface of the battery pack fits in the pocket of the charger body along the reference wall surface with the small battery pack or the large battery pack attached to the mobile phone body. By storing, the guide holes of the small battery pack and the large battery pack and the charging terminals inside are located at the same position, so the guide holes of each battery pack fit into the guide protrusions at the bottom of the pocket. Then
It is possible to charge the battery in the battery pack by bringing the charging terminal in the guide hole into contact with the movable charging terminal projecting from the guide projection by the elasticity of the spring. And, by providing the charging terminal of each battery pack in the guide hole as described above, it is not possible to touch it from the outside, damage and short circuit can be prevented to improve safety, and it can be hidden from the outside. , The appearance can be improved.

Even for a small-sized battery pack that is light in weight, a sufficient contact pressure can be obtained by engaging the engaging recesses with the engaging projections provided in the pockets and securely holding the engaging recesses. Therefore, the contact failure of the charging terminal can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a charging device according to an embodiment of the present invention, showing a state before a mobile phone is stored in a charger.

FIG. 2 (a) is a partial rear view showing a mobile phone with a small battery pack used in the same charging device, and FIG. 2 (b) is a bottom view showing the mobile phone.

FIG. 3 (a) is a partial rear view showing a mobile phone equipped with a large battery pack used in the same charging device, and FIG. 3 (b) is a bottom view showing the mobile phone.

FIG. 4 is a partially cutaway side view showing the same charging device, in which a small battery pack attached to a mobile phone body is being charged.

FIG. 5 is a partially cutaway side view showing the same charging device, in which a large battery pack mounted on a mobile phone body is being charged.

FIG. 6 is a perspective view showing a conventional charging device before storing a mobile phone in a charger.

FIG. 7 (a) is a rear view showing a mobile phone used in the same charging device and equipped with a small battery pack. FIG. 7 (b) is a bottom view showing the mobile phone.

FIG. 8 (a) is a rear view showing a mobile phone equipped with a large battery pack used in the same charging device, and FIG. 8 (b) is a bottom view showing the same mobile phone.

FIG. 9 is a partially cutaway side view showing the same charging device, in which a small battery pack attached to the body of the mobile phone is being charged.

FIG. 10 is a partially cutaway side view of the charging device, showing a state where a large battery pack attached to the main body of the mobile phone is being charged.

[Explanation of symbols]

 1 Mobile Phone 2 Charger 3 Mobile Phone Main Body 4 Small Battery Pack 5 Large Battery Pack 6 Guide Hole 7 Guide Hole 8 Charging Terminal 9 Charging Terminal 9 Engagement Recess 11 Groove 12 Charger Body 13 Movable Charging Terminal 15 Pocket 16 Standard Wall surface 18 Guide protrusion 21 Compression spring 22 Engagement protrusion

Claims (2)

[Claims] 1. A guide hole formed at the same position from the back on the bottom surface of a small battery pack and a large battery pack mounted on a mobile phone body, a charging terminal provided in the guide hole, and the mobile phone. A charger main body having a pocket large enough to accommodate the large battery pack attached to the main body, provided on the bottom surface of the pocket at a position closer to the reference wall surface, for guiding the small battery pack or the large battery pack A guide protrusion that fits into the hole; a movable charging terminal that is retractablely protruded from the guide protrusion and contacts the charging terminal; and a charger that has a spring that biases the movable charging terminal in a protruding state. Charger equipped with. 2. An engaging protrusion is provided on a reference wall surface of the charger main body, and engages with the engaging protrusion on the back surface of the small battery pack to hold the charging terminal in contact with the movable charging terminal. Therefore, a recess for engagement is provided, and a groove for letting the projection for engagement escape is formed on the back surface of the large-sized battery pack.
The charging device described.