JP3999892B2 - Charger - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a charger for charging a built-in secondary battery by detachably attaching a charged pack. In particular, the present invention relates to a charger that is mounted on a mounting portion of a case so that the pack to be charged can be tilted.
[0002]
In the present specification, the “charged pack” means a portable electric device or a battery pack that incorporates a secondary battery.
[0003]
[Prior art]
A charger for a portable electric device such as a mobile phone that has a built-in secondary battery has a mounting portion that is set on the upper surface of the case so that the portable electric device can be attached and detached. When the portable electric device is set in the mounting portion, the electrode terminal provided in the portable electric device is connected to the charger, and the built-in secondary battery is charged. The charger having this structure can be easily attached by attaching the portable electric device to the attachment portion so as to be tilted. A mounting portion that cannot tilt cannot be easily mounted because it is necessary to accurately insert the portable electric device.
[0004]
When the portable electric device is set on the mounting portion, an elastic wire is provided on the mounting portion so as to be connected to the electrode terminal. The elastic wire is provided on the bottom surface of the mounting portion or on the side surface of the mounting portion. The charger of the to-be-charged pack which provided the electrode terminal in the bottom face of the case arrange | positions an elastic wire material in the bottom face of a mounting part. On the other hand, a charger for a portable electrical device having an electrode terminal on the side surface of the case needs to be provided with an elastic wire on the side surface of the mounting portion. The elastic wire provided on the side surface of the mounting portion has a feature that the contact failure can be reduced by sliding the electrode terminal when the charged pack is detached.
[0005]
[Problems to be solved by the invention]
However, the elastic wire provided on the side surface of the mounting portion has a drawback that it is easily deformed when the charged pack is tilted. In particular, the chargeable pack has the electrode terminals in the recesses with almost no exception. Therefore, if the chargeable pack is tilted with the elastic wire inserted in the recesses, the elastic wire is deformed and distorted. There is. If the elastic wire is deformed, when the charged pack is set on the mounting portion, it cannot reliably contact the electrode terminal, causing a contact failure.
[0006]
The present invention has been developed for the purpose of solving such drawbacks, and an important object of the present invention is that even if a charged pack having electrode terminals on its side is tilted, it is electrically connected to this. An object of the present invention is to provide a charger that can effectively prevent deformation of the elastic wire and reduce contact failure.
[0007]
[Means for Solving the Problems]
The charger of the present invention attaches the charge pack 1 to the attachment portion 4 provided in the case 3, and connects the elastic wire 5 provided in the attachment portion 4 to the electrode terminal 2 of the charge pack 1 to be charged. The secondary battery of pack 1 is charged. The to-be-charged pack 1 is attached so that it can tilt to the attachment part 4 of a charger. Furthermore, the to-be-charged pack 1 is provided with the electrode terminal 2 on the side surface. In the charger, the elastic wire 5 connected to the electrode terminal 2 is disposed on the side surface of the mounting portion 4.
[0008]
By the way, in this specification, the side surface of the to-be-charged pack 1 is specified with reference to the tilting direction. When the charging pack 1 can be tilted left and right, the front and rear surfaces of the charged pack 1 are defined as side surfaces.
[0009]
Furthermore, the charger according to claim 1 of the present invention has the following unique configuration.
(A) When the to-be-charged pack 1 is tilted by the mounting portion 4, the electrode window 2 extends in the lateral displacement direction in which the electrode terminal 2 moves to open the electrode window 6.
(B) The elastic wire 5 has a contact convex portion 5 </ b> A in contact with the electrode terminal 2 of the pack 1 to be charged at the tip.
(C) The contact convex portion 5 </ b> A is exposed to the outside from the electrode window 6 and connected to the electrode terminal 2 of the charged pack 1 attached to the attachment portion 4.
(D) The contact convex portion 5 </ b> A extends in the detaching direction of the charged pack 1.
(E) The elastic wire 5 has a lateral displacement elastic deformation portion 5C that elastically deforms the contact convex portion 5A in the lateral displacement direction along the electrode window 6 between the fixed portion 5B and the contact convex portion 5A. When the 1 is tilted, the lateral displacement elastic deformation portion 5C is elastically deformed.
[0010]
Charger present invention, the lateral elastic deformation portion 5C of the elastic wire members 5, and a coil spring shape had wound spirally. Moreover, the charger of this invention makes it the shape which bends the lateral-shift elastic deformation part 5C of the elastic wire 5 in a zigzag shape.
[0011]
Further, the charger of the present invention, the electrode window 6 of the elastic wire 5, a slit 11 extending in the lateral direction is provided to move the sides of the convex contact portions 5A in the slit 11, the lateral shift direction convex contact portion 5A To move to.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment described below exemplifies a charger for embodying the technical idea of the present invention, and the present invention does not specify the charger as follows.
[0013]
Further, in this specification, in order to facilitate understanding of the scope of claims, the numbers corresponding to the members shown in the examples are referred to as “the scope of claims” and “the means for solving the problems”. It is added to the member shown by. However, the members shown in the claims are not limited to the members in the embodiments.
[0014]
The charger shown in FIG. 1 includes a printed circuit board 7 in a case 3. The printed circuit board 7 is mounted with a power supply circuit 8 that charges the secondary battery of the pack 1 to be charged. An elastic wire 5 is connected to the power supply circuit 8. The elastic wire 5 is connected to the electrode terminal 2 of the charged pack 1 mounted on the mounting portion 4 provided in the case 3 and charges the secondary battery of the charged pack 1.
[0015]
FIG. 1 shows a state in which the to-be-charged pack 1 is attached to a charger and charged. The charger shown in this figure is provided with a mounting portion 4 on the upper surface of the case 3 for detachably mounting the charged pack 1.
[0016]
The mounting portion 4 has a depth for inserting the lower portion of the charged pack 1 and allowing the charged pack 1 to stand on its own in an inclined posture as shown in FIG. As shown in FIG. 7, the width of the mounting portion 4 is slightly wider than the lateral width of the charged pack 1. The mounting portion 4 holds the charged pack 1 in an inclined posture and holds the charged pack 1 so that it can move forward as indicated by the arrow in FIG. 2 when the charged pack 1 is detached. As shown in the cross-sectional views of FIG. 1 and FIG. 2, the mounting portion 4 includes a back support portion 9 that supports the back surface of the charged pack 1 and a front support portion 10 that supports the front surface of the charged pack 1. It is disposed at the opposite position.
[0017]
On the side surface of the mounting portion 4, an elastic wire 5 that contacts the electrode terminal 2 of the charged pack 1 is provided as a charging terminal. The elastic wire 5 is manufactured by processing a metal wire that can be elastically deformed. The elastic wire 5 is fixed to a printed circuit board 7 built in the case 3 of the charger, and elastically protrudes from the electrode window 6 opened on the side surface of the mounting portion 4 to the mounting portion 4. Further, the elastic wire 5 is connected to a power supply circuit 8 that is a charging circuit mounted on the printed circuit board 7, and contacts the electrode terminal 2 to charge the secondary battery of the charged pack 1.
[0018]
The elastic wire 5 has a contact convex portion 5 </ b> A that contacts the electrode terminal 2 of the pack 1 to be charged at the tip. The contact convex portion 5A is provided by bending a metal wire into a mountain shape. As shown in the sectional view of FIG. 3, the contact convex portion 5 </ b> A is exposed from the electrode window 6 to the mounting portion 4 and connected to the electrode terminal 2 of the charged pack 1. Furthermore, the contact convex portion 5A is configured to slide on the electrode terminal 2 when the charged pack 1 is attached to or detached from the mounting portion 4 so that the contact convex portion 5A can smoothly contact the electrode terminal 2 of the charged pack 1. , Extended in the removal direction. The charged pack 1 shown in the figure moves up and down and is attached to and detached from the mounting portion 4. Therefore, the contact convex portion 5A extends in the vertical direction.
[0019]
A sliding piece 5D that slides on the inner surface of the case 3 below the electrode window 6 is provided at the lower end of the contact convex portion 5A. The elastic wire 5 bends the boundary between the contact convex portion 5 </ b> A and the sliding piece 5 </ b> D so that the sliding piece 5 </ b> D is shaped along the inner surface of the case 3. The sliding piece 5 </ b> D is elastically pressed by the inner surface of the case 3 due to the elasticity of the elastic wire 5, and specifies the protruding amount of the contact convex portion 5 </ b> A that is elastically deformed.
[0020]
Furthermore, the elastic wire 5 shown in the drawing is provided with a laterally-shifted elastic deformation portion 5C that elastically deforms the contact convex portion 5A along the electrode window 6 in the lateral shift direction between the fixed portion 5B and the contact convex portion 5A. The lateral displacement elastic deformation portion 5C prevents the elastic wire 5 from being distorted by being elastically deformed when the charged pack 1 is tilted. The elastic wire 5 shown in the figure is provided with a coil spring-like laterally-displaced elastic deformation portion 5C by winding a metal wire in a spiral shape. However, although the laterally-slip elastic deformation portion is not illustrated, it can be bent in a zigzag shape.
[0021]
A perspective view of the elastic wire 5 is shown in FIG. The elastic wire 5 in this figure is provided with a lateral displacement elastic deformation portion 5C at the upper end. In the figure, the right side of the laterally elastic deformation portion 5C is fixed to the printed circuit board 7 or the like as a vertical portion. A contact convex portion 5A is provided on the left side of the lateral displacement elastic deformation portion 5C. For comparison, a conventional elastic wire 5 is shown in FIG. The elastic wire 5 in this figure has no laterally elastic deformation portion, so that it elastically deforms only in the direction indicated by the arrow A. On the other hand, the elastic wire 5 shown in FIG. 4 is easily elastically deformed in the lateral displacement direction indicated by the arrow B by the lateral displacement elastic deformation portion 5C in addition to the direction indicated by the arrow A.
[0022]
The electrode window 6 through which the elastic wire 5 is exposed to the mounting portion 4 is extended and opened in the lateral displacement direction in which the electrode terminal 2 moves when the charged pack 1 is tilted by the mounting portion 4. The electrode window 6 shown in FIGS. 7 and 8 is extended to the left and right and opened. This is because the electrode terminal 2 moves to the left and right when the charged pack 1 is tilted in the direction shown in FIGS. In this figure, the “lateral displacement direction” of the electrode terminal 2 is the left-right direction.
[0023]
Furthermore, as shown in the enlarged front view of FIG. 6, the electrode window 6 is provided with two rows of slits 11 extending in the left-right direction which is the lateral displacement direction. As shown in the sectional view of FIG. 3, the two rows of slits 11 are moved on both sides of the contact convex portion 5A. Between the two rows of slits 11, a horizontal rod 12 is provided on the back surface of the contact convex portion 5 </ b> A bent in a mountain shape. The electrode window 6 having this structure can smoothly elastically deform the elastic wire 5 in the lateral displacement direction.
[0024]
In the charger having this structure, when the chargeable pack 1 is attached to the attachment portion 4 for charging, the contact protrusion 5A is brought into contact with the electrode terminal 2 as shown in FIGS. When the charged pack 1 is tilted forward, as shown in FIGS. 2 and 8, the lateral displacement elastic deformation portion 5 </ b> C is elastically deformed to bring the contact convex portion 5 </ b> A into contact with the electrode terminal 2. The to-be-charged pack 1 of the figure has the electrode terminal 2 provided in the recess 13 of the case. The contact convex portion 5A that contacts the electrode terminal 2 of the charged pack 1 contacts the electrode terminal 2 while being inserted into the concave portion 13 of the case. When the charged pack 1 is tilted, the lateral displacement elastic deformation portion 5 </ b> C is elastically deformed, and the contact convex portion 5 </ b> A is held in a state of being inserted into the concave portion 13. At this time, since the laterally elastic deformation portion 5C is elastically deformed, the elastic wire 5 is not deformed locally locally. For this reason, even if the to-be-charged pack 1 is tilted, the elastic wire 5 is not distorted.
[0025]
【The invention's effect】
The charger according to the present invention has an advantage that even when the charged pack provided with electrode terminals on the side surface is tilted, the deformation of the elastic wire electrically connected to the pack can be effectively prevented and contact failure can be reduced. That is, the charger of the present invention connects an elastic wire to the electrode terminal of the charge pack attached to the attachment portion to charge the charge pack, and the elastic wire contacts the electrode terminal of the charge pack. This is because the laterally projecting elastic deformation portion that elastically deforms the contact convex portion in the lateral displacement direction is provided between the fixed portion and the contact convex portion while having the contact convex portion at the distal end portion. For this reason, the charger of the present invention can easily elastically deform the contact convex portion in the lateral displacement direction by the lateral displacement elastic deformation portion that elastically deforms even when the charged pack attached to the attachment portion is tilted. Therefore, even if the charged pack having the electrode terminal on the side surface is tilted at the mounting portion, the elastic wire material electrically connected to the electrode terminal is effectively prevented from being deformed and distorted, and the electrode terminal is reliably Features that allow contact are realized.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a state where a charged pack is attached to the charger according to the embodiment of the present invention. FIG. 2 is a cross-sectional view showing a state where the charged pack attached to the charger shown in FIG. FIG. 3 is an enlarged cross-sectional view showing a contact portion between a charger and a pack to be charged. FIG. 4 is an enlarged perspective view of an elastic wire used in the charger according to the embodiment of the present invention. Fig. 6 is an enlarged perspective view of a wire rod. Fig. 6 is a partially sectional enlarged front view of an electrode window provided in a mounting portion of a charger according to an embodiment of the invention. Fig. 7 is a horizontal sectional view of the charger shown in Fig. 1 as viewed from the bottom. FIG. 8 is a horizontal sectional view of the charger shown in FIG. 2 as viewed from the bottom.
DESCRIPTION OF SYMBOLS 1 ... Charged pack 2 ... Electrode terminal 3 ... Case 4 ... Mounting part 5 ... Elastic wire 5A ... Contact convex part 5B ... Fixed part 5C ... Lateral displacement elastic deformation part 5D ... Sliding piece 6 ... Electrode window 7 ... Printed circuit board 8 ... Power supply circuit 9 ... back support 10 ... front support 11 ... slit 12 ... horizontal rod 13 ... recess

Claims (3)

The charge pack (1) is attached to the attachment part (4) provided in the case (3), and the elastic wire (5) provided in the attachment part (4) is attached to the electrode terminal (2) of the charge pack (1). ) Is connected to charge the secondary battery of the rechargeable pack (1), and the rechargeable pack (1) is mounted so that it can tilt to the mounting portion (4). In the charger in which the elastic wire (5) connected to the electrode terminal (2) provided on the side surface of (1) is disposed on the side surface of the mounting portion (4), it has all the following configurations. A charger characterized by.
(A) When the to-be-charged pack (1) is tilted by the mounting portion (4), the electrode terminal (2) extends in the lateral displacement direction in which the electrode terminal (2) moves to open the electrode window (6).
(B) The elastic wire (5) has a contact protrusion (5A) at the tip that contacts the electrode terminal (2) of the pack (1) to be charged.
(C) The contact convex portion (5A) is formed so as to be exposed to the outside from the electrode window (6) and connected to the electrode terminal (2) of the charged pack (1) attached to the attachment portion (4). ing.
(D) The contact convex part (5A) is extended in the attachment / detachment direction of the to-be-charged pack (1).
(E) The elastic wire (5) has a laterally elastic property that elastically deforms the contact convex part (5A) in the laterally offset direction along the electrode window (6) between the fixed part (5B) and the contact convex part (5A). It has a deforming portion (5C), and is configured to elastically deform the lateral displacement elastic deforming portion (5C) when the charged pack (1) is tilted.   The charger according to claim 1, wherein the laterally-slip elastic deformation portion (5C) is bent in a zigzag shape. The charge pack (1) is attached to the attachment part (4) provided in the case (3), and the elastic wire (5) provided in the attachment part (4) is attached to the electrode terminal (2) of the charge pack (1). ) Is connected to charge the secondary battery of the rechargeable pack (1), and the rechargeable pack (1) is mounted so that it can tilt to the mounting portion (4). In the charger in which the elastic wire (5) connected to the electrode terminal (2) provided on the side surface of (1) is disposed on the side surface of the mounting portion (4), the charger has all the following configurations. ,
The electrode window (6) of the elastic wire (5) has a slit (11) extending in the lateral displacement direction, and both sides of the contact convex portion (5A) are moved to the slit (11), so that the contact convex portion (5A ) Is moved in the lateral displacement direction.
(A) When the to-be-charged pack (1) is tilted by the mounting portion (4), the electrode terminal (2) extends in the lateral displacement direction in which the electrode terminal (2) moves to open the electrode window (6).
(B) The elastic wire (5) has a contact protrusion (5A) at the tip that contacts the electrode terminal (2) of the pack (1) to be charged.
(C) The contact convex portion (5A) is formed so as to be exposed to the outside from the electrode window (6) and connected to the electrode terminal (2) of the charged pack (1) attached to the attachment portion (4). ing.
(D) The contact convex part (5A) is extended in the attachment / detachment direction of the to-be-charged pack (1).
(E) The elastic wire (5) has a laterally elastic property that elastically deforms the contact convex part (5A) in the laterally offset direction along the electrode window (6) between the fixed part (5B) and the contact convex part (5A). It has a deforming portion (5C), and is configured to elastically deform the lateral displacement elastic deforming portion (5C) when the charged pack (1) is tilted.

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