JP5011915B2 - Charging stand - Google Patents

Description

The present invention relates to a charging stand used for charging a charging device or a rechargeable battery.

A rechargeable battery (secondary battery) can be used any number of times simply by charging, and the battery can be discarded. For this reason, a battery using a rechargeable battery as a power source for portable devices is increasing. For this charging, it is troublesome to remove the rechargeable battery from the device every time it is charged and attach it to a dedicated charger for charging. As one solution to this problem, a method using a charging stand is considered.

For example, as shown in FIG. 8 (Patent Document 1), the charging base is fitted with a charging battery 2 (which is a rechargeable battery pack in this example, but the same applies to a charging device) 2 on the base 1. When a hole (some of which is notched for fitting) 3 is provided and a contact terminal 4 for charging is provided at the bottom of the hole 3, the contact terminal 4 fits the rechargeable battery 2 into the fitting hole 3. In addition, the battery can be charged in contact with the charging terminal of the rechargeable battery 2. Thus, it is convenient because the battery 2 can be charged simply by being mounted on the charging stand.

At this time, in FIG. 8, a circuit board 5 on which a charging circuit for charging with a charge output suitable for the type of battery is mounted is disposed at the bottom, and the contact terminal 4 and the push switch are placed on the board 5. 6 is attached, and the terminal 4 and the push button of the switch 6 are projected from the bottom surface. By doing so, if the rechargeable battery 2 is mounted in the fitting hole of the charging stand, the push button of the push switch 6 is pushed and the output can be switched. Thus, if the contact terminal 4 and push switch 6 of a charging stand are in the bottom part, control of a charging circuit can also be performed easily.

JP-A-6-19264

However, as described above, in order to accommodate the substrate at the bottom, it is necessary to provide a storage space for the substrate by doubling the bottom, and when forming a screw hole for fixing the charging stand to the bottom, When there is a restriction on the layout of the bottom, such as when it is necessary to make the bottom thin, there is a problem that the circuit board cannot be provided.

At this time, it is conceivable that a space is provided between the inner wall of the fitting hole of the base part and the outer wall of the base part so that the substrate is built vertically.

However, even if the board is arranged vertically between the inner wall of the fitting hole and the outer wall of the base part, the charging terminal of the charging device is located at the bottom and cannot be contacted well simply by exposing the contact terminal of the board from the inner wall. .

Similarly, there is a problem that even if the push button of the push switch is projected from the inner wall, the charging device inserted vertically into the fitting hole collides with the projecting push button and cannot be operated. At this time, for example, it is conceivable to attach a hinge lever or the like to the push switch so that it can be operated.

Therefore, an object of the present invention is to enable charging without providing a circuit board at the bottom.

In order to solve the above-described problems, the present invention provides a charging circuit in which a slit penetrating to a built-in circuit board is provided on the inner wall of the notch or the fitting hole of the base part, and one end is fixed to the circuit board and mounted on the circuit board. A contact terminal connected and released from the board with the other end opened is provided, and a push switch is provided between the contact terminal and the board so that the charging circuit is turned on and off by turning the push switch on and off. The push switch is turned on / off by pressing the contact terminal, and the circuit board provided with the contact terminal is built in the base portion with the other end side of the contact terminal down, and the terminal A configuration is adopted in which the projection protrudes from the slit.

By adopting such a configuration, the substrate is built in the base part with the other end side of the contact terminal facing down, and the other end side of the contact terminal is projected from the slit provided on the inner wall, for example, below, from the substrate. The end portion on the other end side that is raised protrudes into the notch or the fitting hole (the rear portion from the tip portion of this end portion advances in an inclined state). For this reason, when the charging device or the rechargeable battery is inserted into the notch or the fitting hole and attached, the charging terminal at the bottom of the charging device or the rechargeable battery and the protruding terminal can contact and charge. Further, when the contact terminal is pushed during the contact, the contact terminal having one end fixed to the substrate is bent. When the contact terminal is bent, a push switch provided between the contact terminal and the substrate is pressed and turned on. In addition, when the push switch that has been pressed and turned on is removed from the notch or the fitting hole, the bent contact terminal returns to its original state (restore), and the push switch is released and turned off. become.

At this time, it is possible to adopt a configuration in which the contact terminal has a “<” shape with one end fixed to the substrate and the other end with a stopper that is wider than the slit width.

By adopting such a configuration, the bent portion (middle portion) of the contact terminal formed in the shape of “<” will protrude (advance) into the notch or the fitting hole. Charging is performed by contacting with a charging terminal of a charging device or a rechargeable battery inserted into a notch or a fitting hole. The stopper of the other end prevents the contact terminal from coming off the slit by engaging with the slit, and the slit guides the bent contact terminal to prevent a deformation accident such as bending of the terminal.

With this configuration, the contact terminal and the detection switch are provided on the inner wall of the fitting notch or fitting hole for attaching the charging device or the rechargeable battery even when the layout of the bottom is limited. A charging stand can be configured. Further, since the charging stand can be configured with a simple structure, the cost can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the charging base of this embodiment is for charging with the portable radio device 10 mounted thereon, and is made stylish with a thin bottom.

As shown in FIG. 2, the charging stand includes a base 12 provided with a notch for fitting (or a fitting hole 3 as shown in FIG. 8) 11 and a circuit board 13 as shown in FIG. As shown in FIG. 4, the circuit board 13 is built with a space 16 provided between the inner wall 14 of the notch 11 and the outer wall 15 of the base 12.

The notch 11 of the base portion 12 is provided so that the portable wireless device 10 having the charging terminal can be attached, and an opening 9 is provided in the front so that the portable wireless device 10 can be easily attached.

On the other hand, three slits 17 are provided in the notch 11. The slit 17 is provided below the inner wall 14 behind the notch 11 so as to penetrate the space 16 containing the circuit board 13. Further, a protrusion 18 is provided between the slits 17 so as to separate a contact terminal 19 (described later) protruding from each slit 17.

In addition, a positioning projection 20 and a fixing spring 21 are provided in the notch 11, and the position for contacting the contact terminal 19 when the portable wireless device 10 is mounted is uniquely determined. It is like that.

That is, when the portable wireless device 10 is attached, the orientation is determined by the engagement of the groove on the wireless device 10 side with the positioning projection 20. Then, the fixing spring 21 is fixed by gripping the casing of the portable wireless device 10.

Further, the notch 11 is provided with a screw hole 22 so that a screw nail can be inserted into the screw hole and fixed to a desk or the like.

The circuit board 13 is equipped with a charging circuit and includes a charging contact terminal 19 and an on / off push switch 23.

The charging circuit is a constant voltage constant current charging circuit (omitted on the back side of the figure), measures the battery voltage, and controls the charging voltage based on the measured voltage. Therefore, three contact terminals 19 are provided, one serving as a battery voltage measuring terminal, and the remaining two serving as a charging positive electrode and a negative electrode.

This contact terminal 19 is formed into a "<" shape by bending a strip-shaped elastic conductive plate having a claw portion at one end 19 a and the other end 19 b in a “T” shape. Therefore, the claw portion of one end 19a is attached to the substrate and connected to the charging circuit, and the other end 19b is raised from the substrate.

The on / off push switch 23 is for controlling the operation of the charging circuit. As shown in FIG. 3, between the contact terminals 19 of the substrate 13 (any one is acceptable) and the substrate 13. The push button of the switch 23 faces the contact terminal 19. By doing so, when the contact terminal 19 bends as shown by an arrow, the push button 23 is pressed and the push switch 23 is turned on. Also, the pressed button is released and turned off when the bent contact terminal 19 returns (restores). At this time, the detection sensitivity can be easily adjusted by changing the shape (bending condition) of the contact terminal 19 with respect to the operating range of the switch 23.

Here, reference numeral 24 in FIG. 3 is a connection jack for an AC adapter. Reference numeral 25 denotes a pilot lamp indicating a state of charge by the LED. Reference numeral 26 denotes a capacitor of the charging circuit.

As shown in FIG. 4, this circuit board is built in the base 12 with the other end 19 b of the contact terminal 19 facing down. Then, the terminal 19 protrudes from the slit 17. In the protruding terminal 19, a bent portion (middle) 19 c of “<” is a tip portion protruding into the notch 11, and when this portion 19 c is attached to the notch 11, a wireless connection is made. It contacts the charging terminal of the communication device 10. At that time, since the bent portion 19c and the portions up to both ends 19a and 19b are guided by the slit 17, it is possible to prevent a deformation accident such as bending of the terminal. Further, preventing the other end 19b from coming off prevents the contact terminal 19 from being detached from the slit 17 by engaging with the slit 17.

This configuration is configured as described above, and the charging stand is connected to an AC adapter and used, for example, on a desk.

When the portable wireless device 10 is not attached to the charging stand, as shown in FIG. 4, the contact terminal 19 protrudes from the slit 17, the push switch 23 is released and turned off, and the charging circuit is also turned off.

Now, the portable wireless device 10 is inserted into the notch 11 of the base 12 for charging as shown by the arrow A in FIG. At that time, the orientation of the portable wireless device 10 is fitted in accordance with the orientation of the protrusion 20 in the notch 11. Then, the contact terminal 19 is pushed by the casing of the portable wireless device 10 as shown by the arrow B in FIG. 5, and the push button of the push switch 23 is pushed by the bent contact terminal as shown by the arrow C in FIG. . Therefore, the push switch 23 is turned on and the charging circuit is activated.

At this time, as shown in FIG. 6, the portable wireless device 10 reaches the bottom of the notch 11, but at this time, the “19” bent portion 19 c protruding into the notch 11 of the contact terminal 19 is Since it contacts the charging terminal 27 at the bottom of the wireless device 10, it can be charged.

When charging is completed and the portable wireless device 10 is lifted and removed in the opposite direction to the arrow A in FIG. 5, the contact terminal 19 returns (restores) in the opposite direction to the arrow B, and the push button of the push switch 23 is It extends in the direction opposite to arrow C and turns off. Therefore, the charging circuit can be turned off.

In this way, the circuit board 13 is arranged vertically, the slit 17 is provided so that the contact terminal 19 protrudes into the notch 11 and can be charged, and the push switch 23 is connected between the protruded contact terminal 19 and the board 13. Since it is provided, if the contact terminal 19 comes into contact with the charging terminal 27 of the portable wireless device 10, the rechargeable battery can be detected and the charging circuit can be turned on / off. For this reason, there is no restriction | limiting in a detection direction. In addition, since the bottom of the charging base can be slimmed and a screw hole can be provided in the bottom without using another switch in place of the push switch 23, the number of components can be reduced (for example, without a hinge lever). ) And low cost.

In the embodiment, the portable wireless device is used as the charging device, but the charging device is not limited to this. For example, the present invention can be applied to information devices such as mobile phones and PDAs. Moreover, although only the charging device is described in the embodiment, it can be applied to a battery pack corresponding to a charging stand.

In the first embodiment, the contact terminals are described, and a strip-shaped contact terminal 19 'as shown in FIG. Also in this case, the other end 19b 'rising from the substrate 13 protrudes into the notch 11 or the fitting hole, so that charging and the push switch can be turned on and off as in the embodiment.

Other configurations and operational effects are the same as those of the embodiment, and thus the same reference numerals are given and description thereof is omitted.

Perspective view of an embodiment The perspective view of the principal part of embodiment The perspective view of the principal part of embodiment Cross-sectional view of the embodiment Action explanatory diagram of the embodiment Cross-sectional view of the embodiment Sectional view of Example 1 Cross section of conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Portable radio | wireless machine 11 Notch 12 Base part 13 Circuit board 14 Inner wall 15 Outer wall 16 Space 17 Slit 19 Contact terminal 19a One end 19b The other end 19c Bending 23 Push switch

Claims (2)

Built-in between a base part provided with a notch or a fitting hole for fitting a charging device or a rechargeable battery equipped with a charging terminal, and an inner wall of the base part notch or fitting hole and an outer wall of the base part It consists of a circuit board with a charging circuit,
The base portion is provided with a slit penetrating the built-in circuit board on the inner wall of the notch or the fitting hole,
On the other hand, the circuit board is provided with a strip-shaped contact terminal which is connected to a charging circuit having one end fixed to the board and mounted and is released from the other end, and a push switch between the contact terminal and the board. And the charging circuit is turned on and off by turning the push switch on and off, and the push switch is turned on and off by pressure contact of the contact terminal, and a circuit board provided with the contact terminal is provided. A charging stand that is built in the base portion with the other end side of the contact terminal facing down so that the terminal advances from the slit to the notch or the fitting hole. 2. The charging stand according to claim 1, wherein the contact terminal has a “<” shape with one end fixed to the substrate and the other end with a stopper that is wider than the slit width.

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