JP2004266956A - Charger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent exposure of a contact with a simple structure and, at the time of usage, to expose the contact in smooth operation. <P>SOLUTION: This charger includes a contact cover 60 which consists of an accommodation portion 61, an arm 62, and a shaft 63 of which the shaft portion 63 is rotatably journaled to a bearing 35 provided on an inner surface side of a case (an upper case) 30, and which is formed by protruding the accommodation portion 61 to the outside through an opening 34 provided at the case 30, and a torsion coil spring 80 in which a coil portion 82 is wound around the shaft portion 63 and which rotates and supports the contact cover 60 in such a direction that the accommodation portion 61 is protruded to the outside. A contact 70 is made to have a torsion coil spring structure, and a contact 72 on one end side is accommodated in the accommodation portion 61. Charged equipment 90 is attached to press the accommodation portion 61, and the contact cover 60 is rotated, thus exposing the contact portion 72. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a charging device used to charge a device to be charged such as a cordless telephone, a mobile phone, or a rechargeable battery.
[0002]
[Prior art]
If the charging contacts that are in contact with the terminals of the device to be charged are always exposed, there is a risk of short-circuiting and deformation of the contacts. When the device is not used, exposure of the contact is prevented to protect it.
6 to 8 show the structure of a charging device for a rechargeable battery as a conventional configuration example of a charging device having such a protection structure, and a case 11 constituting the charging device body is shown in FIG. Thus, a pair of side walls 13 and a rear wall 14 projecting above the holding base 12 are provided, and the side wall 13 and the rear wall 14 hold the rechargeable battery.
As shown in FIG. 8, a contact holder 16 is supported below the inner wall 14a of the rear wall portion 14 so as to be rotatable about a horizontal direction perpendicular to a pushing direction when the rechargeable battery 15 is mounted. . The contact holder 16 is formed in a columnar shape as shown in FIG. 7, and a part of the peripheral wall is cut out in a range of approximately 90 ° over the entire length to form a contact holding portion 16a. A pair of contacts 17 are provided on the contact holding portion 16a, and a pin 18 is protruded from a side surface of the contact holder 16.
[0003]
A drive plate 19 is located on a side surface of the contact holder 16, and a pin 18 is inserted into an elongated hole 19 a formed in the drive plate 19. The leading edge of the driving plate 19 is located forward of the leading edge of the contact holder 16 when the rechargeable battery 15 is not mounted, and is formed on the inner wall 14a of the rear wall portion 14. The rechargeable battery 15 is guided by the guide hole 14b and slides in the pushing direction.
A torsion coil spring 21 is extended between the side surface of the contact holder 16 and the case 11 as urging means. In FIG. 8, reference numeral 22 denotes a locking portion that locks one end of the torsion coil spring 21.
[0004]
In this charging device, when the rechargeable battery 15 is slid over the holding base 12 and pushed in, the front end surface of the rechargeable battery 15 contacts the drive plate 19 as shown in FIG. The contact holder 16 is rotated by being pushed and retreating.
When the contact holder 16 rotates, the edge of the contact holding portion 16a comes into contact with the tip surface of the rechargeable battery 15 as shown in FIG. Further rotation causes the state shown in FIG. 8 (3).
Then, in this state, the contact 17 disposed on the contact holding portion 16a contacts the terminal 15a of the rechargeable battery 15, and the rechargeable battery 15 is charged.
When the charging is completed and the rechargeable battery 15 is pulled out, the contact holder 16 and the driving plate 19 return to the original positions shown in FIG. 8A by the restoring force of the torsion coil spring 21, whereby the contact 17 is hidden. Exposure is prevented (for example, see Patent Document 1).
[0005]
[Patent Document 1]
JP-A-11-154536
[Problems to be solved by the invention]
By the way, although the contact 17 hidden by the rotation of the contact holder 16 is exposed in the charging device configured as described above, the pin of the contact holder 16 is required to rotate the contact holder 16. Since the drive plate 19 in which the long hole 19a is engaged with the drive plate 19 is used, the structure is complicated, and the linear movement of the drive plate 19 is converted into the rotation movement of the contact holder 16. , It is difficult to operate smoothly.
[0007]
Further, since the contact 17 is disposed on the contact holding portion 16a of the contact holder 16, the contact 17 also has a structure that rotates integrally with the contact holder 16, so that wiring for the contact 17 in the charging device is performed. There is also a disadvantage that is complicated.
It is an object of the present invention to provide a charging device having a simple structure in which the exposure of a contact is prevented when not in use and a structure in which the contact is smoothly operated and exposed when not in use.
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, the contact portion of the contact protrudes from the case forming the main body of the charging device, and the device to be charged is attached by contacting the contact portion with the terminal of the device to be charged. A charging device for charging a device includes a storage part, an arm part following the storage part, and a shaft part following the arm part, and the shaft part is rotatably supported by a bearing part provided on the inner surface side of the case. The contact portion is made of a resin and has a housing portion protruding outside through an opening provided in the case, and a contact portion in a direction in which the coil portion is wound around the shaft portion and the housing portion protrudes outside. A torsion coil spring for biasing the rotation, the contact is formed in a torsion coil spring structure, the coil portion is wound around the shaft portion, and the contact portion formed on one end side of the torsion coil spring structure has the opening formed in the opening. To The structure is such that when the device to be charged is mounted, the storage portion is pushed by the device to be charged, and the contact cover is rotated to expose the contact portion. It is said.
[0009]
According to a second aspect of the present invention, in the first aspect of the present invention, the storage portion includes a pair of side plates whose plate surfaces are parallel to the rotation direction of the contact cover, and a pair of peripheral walls connecting the side plates on the outer peripheral side. The side plates are located close to both sides of the contact portion.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an outline of an external structure of a charging device for a mobile phone as an embodiment of a charging device according to the present invention. A case forming a charging device body includes an upper case 30 and a lower case 40, The upper case 30 has a front wall 32 and a rear wall 33 protruding above the holding base 31.
A lock claw 50 protrudes from an inner wall 32a of the front wall portion 32 through an opening, and this lock claw 50 engages with a lock portion provided on the mobile phone. The lock claw 50 is urged in a direction protruding outside by a spring provided inside the upper case 30.
On the other hand, two openings 34 are formed in the inner wall 33a of the rear wall 33 and the holding base 31 subsequent to the inner wall 33a, and the storage parts 61 of the pair of contact covers 60 are formed through these openings 34. Are projected outside. Although not shown in FIG. 1, these contact portions 61 accommodate contact portions of the contacts.
FIG. 2 shows the shape of the opening 34 by omitting the contact cover 60 and the contacts.
[0011]
FIG. 3 shows the shapes of a pair of contact covers 60, a pair of contacts 70, and a torsion coil spring 80 that urges the contact cover 60 to rotate, and the state of their coupling, with reference to FIG. The configuration of the parts will be described.
The contact cover 60 includes a storage portion 61, an arm portion 62 following the storage portion 61, and a shaft portion 63 following the arm portion 62, and the shaft portion 63 is provided in a direction orthogonal to the extending direction of the arm portion 62. Have been. The contact cover 60 rotates about the shaft 63.
The storage portion 61 is composed of a pair of side plates 64 whose plate surfaces are parallel to the rotation direction of the contact cover 60 and a peripheral wall 65 connecting the side plates 64 on the outer peripheral side. Is provided with a notch 66 so as to be narrow.
The arm portion 62 is provided along the lower end of the pair of side plates 64, and a locking projection 67 is provided at an end opposite to the shaft portion 63. The contact cover 60 is made of a synthetic resin.
The torsion coil spring 80 includes a U-shaped intermediate portion 81, a pair of coil portions 82 located at both ends of the intermediate portion 81, and extended portions 83 respectively extended from the coil portions 82. .
[0012]
The shaft portions 63 of both contact covers 60 are inserted into the coil portions 82, that is, the torsion coil springs 80 are attached to the pair of contact covers 60 so that the coil portions 82 are wound around the shaft portions 63, and both extension portions thereof are extended. The tips of the portions 83 are hooked and locked by locking protrusions 67 provided on the arm portions 62 of the contact cover 60, respectively. As a material of the torsion coil spring 80, for example, a spring stainless steel wire is used.
The contact 70 is made of a wire and has a torsion coil spring structure. Like the torsion coil spring 80, the coil portions 71 of both contacts 70 are respectively wound around the shaft portion 63 of the contact cover 60, and one end is extended between a pair of side plates 64 of the storage portion 61 of the contact cover 60 to make contact. A portion 72 is formed. The other end is extended as shown in FIG. 3, and its tip is bent downward. In this example, the contact portion 72 is formed by being bent so as to form a U-shape.
[0013]
For example, a piano wire is used as a wire constituting the contact 70, and the surface thereof is plated with Ni (base) / Au.
The contact cover 60, the contact 70, and the torsion coil spring 80 configured as described above are attached to the upper case 30. FIG. 4 shows this mounting state as viewed from the inner surface side of the upper case 30.
As shown in FIG. 4, four bearing portions 35, two spring locking portions 36, and two contact locking portions 37 are formed on the inner surface of the upper case 30 so as to protrude therefrom. The storage portion 61 is inserted into the opening 34 of the upper case 30, and both ends of the shaft portion 63 are fitted into the bearing portions 35, respectively, and are rotatably supported.
The intermediate portion 81 of the torsion coil spring 80 is locked by the two spring locking portions 36. A groove 37a is formed in the contact locking portion 37, and a base end of each contact 70 opposite to the contact portion 72 is fitted and locked in the groove 37a.
In FIG. 4, reference numeral 38 denotes a boss having a screw hole used when assembling and integrating the upper case 30 and the lower case 40 with screws.
[0014]
By attaching the contact cover 60, the contact 70, and the torsion coil spring 80 to the upper case 30 as described above, the storage portions 61 of the both contact covers 60 are projected outside through the opening 34 as shown in FIG. The contact cover 60 is rotationally urged by the torsion coil spring 80 in the direction in which the storage portion 61 projects outside.
The contact portion 72 of the contact 70 housed in the housing portion 61 also protrudes outside through the opening 34, and a pair of side plates 64 of the housing portion 61 are located close to both sides.
[0015]
Next, the operation of the contact cover 60 when the mobile phone is mounted on the charging device having the above configuration will be described with reference to FIG.
FIG. 5A shows a mobile phone in which the mobile phone 90 is inserted between the front wall portion 32 and the rear wall portion 33 of the upper case 30, and the leading end of the mobile phone 90 contacts the storage portion 61 of the contact cover 60. FIG. 5 (2) shows a contact start state between the terminal 91 of the mobile phone 90 and the contact portion 72 of the contact 70, and FIG. 5 (3) shows the completion of the mounting of the mobile phone 90. Each state (charge state) is shown. In the drawing, reference numeral 100 denotes a printed wiring board to which the base end of the contact 70 is connected.
The contact cover 60 rotates as shown in FIG. 5 (2) from the state shown in FIG. 5 (1) when the housing 61 is pushed by the mobile phone 90, whereby the contact part 72 of the contact 70 is housed. It is exposed from the part 61.
The exposed contact portion 72 contacts the terminal 91 of the mobile phone 90, and in the state of FIG. 5 (3) where the mounting of the mobile phone 90 is completed, the contact portion 72 is pushed backward from the state of FIG. 5 (2). Due to the resiliency (elasticity), the terminal 91 reliably contacts the terminal 91 at a required contact pressure.
[0016]
When the charging is completed and the mobile phone 90 is removed, the contact cover 60 returns to the original state in FIG. 5A by the restoring force of the torsion coil spring 80, and the contact portion 72 of the contact 70 is stored in the storage portion 61. To prevent a short circuit accident and deformation of the contact 70.
In this example, a pair of side plates 64 of the storage portion 61 are located close to both sides of the contact portion 72 of the contact 70, and the position of the contact 70 in the arrangement direction (lateral direction) is regulated by these side plates 64. As a result, there is no displacement and the terminal 91 reliably contacts the terminal 91 of the mobile phone 90.
[0017]
【The invention's effect】
As described above, according to the present invention, when not in use, the contact is prevented from being exposed and protected, so that a short circuit accident and deformation of the contact can be prevented. And a return torsion coil spring in which the coil portion is engaged with the rotating shaft (shaft portion) of the contact cover, so that the structure is simple, the space can be reduced accordingly, and the smoothness can be achieved. Operation is obtained.
Also, the contact has a torsion coil spring structure, and its coil portion is engaged with the rotating shaft of the contact cover, similarly to the torsion coil spring for returning the contact cover. And a reliable contact state with the terminal of the device to be charged is obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing an external structure of a charging device according to an embodiment of the present invention.
FIG. 2 is a perspective view of FIG. 1 with a part omitted;
FIG. 3 is a perspective view showing a main part structure of the charging device shown in FIG. 1;
FIG. 4 is a view for explaining an attached state of the structure shown in FIG. 3;
FIG. 5 is a view for explaining the operation of the structure shown in FIG. 3;
FIG. 6 is a perspective view showing a conventional configuration example of a charging device.
FIG. 7 is a perspective view showing a main structure of the charging device shown in FIG. 6;
FIG. 8 is a diagram for explaining the operation of the structure shown in FIG. 7;

Claims (2)

A charging device for charging a device to be charged by protruding a contact portion of a contact from a case constituting a main body of the charging device and mounting the device to be charged, whereby the contact portion contacts a terminal of the device to be charged. hand,
A housing portion, an arm portion following the storage portion, and a shaft portion following the arm portion. The shaft portion is rotatably supported by a bearing portion provided on the inner surface side of the case, and the storage portion is A resin contact cover protruding outside through an opening provided in the case,
A coil portion is wound around the shaft portion, and a torsion coil spring that biases the contact cover in a direction in which the storage portion protrudes to the outside is provided.
The contact has a torsion coil spring structure, the coil portion of which is wound around the shaft portion, and the contact portion formed at one end of the torsion coil spring structure projects through the opening and is inserted into the storage portion. It is stored,
A charging device having a structure in which, when a device to be charged is mounted, the storage portion is pushed by the device to be charged, and the contact cover is rotated to expose the contact portion. The charging device according to claim 1,
The storage portion includes a pair of side plates having a plate surface parallel to a rotation direction of the contact cover, and a peripheral wall connecting the side plates on an outer peripheral side, and the pair of side plates are positioned close to both sides of the contact portion. A charging device, comprising:

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