JP3564375B2 - Instantaneous interruption detection device for connection terminals - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an instantaneous interruption detection device for a connection terminal, and in particular, is provided with an instantaneous interruption detection terminal formed only one low in order to detect an instantaneous interruption between a battery and a connection terminal. The present invention relates to a power supply instantaneous interruption detection device for a portable terminal.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 61-161928, which is a first conventional example, discloses a capacitor having a capacity capable of backing up a power supply to an electronic circuit which requires power even during a commercial power interruption, for the duration of the power interruption. And a battery having a capacity capable of backing up the power for a certain period of time. A backup circuit is disclosed.
[0003]
Japanese Patent Application Laid-Open No. 8-331215, which is a second conventional example, includes a voltage detector that detects a battery voltage and outputs a signal indicating the presence or absence of a battery contact failure. A portable device is disclosed in which state information relating to various controls at the time of occurrence of an instantaneous interruption is stored in a storage means, and various control operations are restarted based on the stored state information when battery contact is restored to a normal state. I have.
[0004]
Japanese Patent Application Laid-Open No. 2000-69137, which is a third conventional example, discloses a wireless communication device configured to accommodate a battery pack in a battery chamber configured by attaching a lid to a communication device main body. One connector constituting the connector is fixed to the communication device body, the other connector constituting the floating connector is fixed to the battery pack, and the one connector and the other connector are fitted to each other to perform communication. A wireless communication device in which a device body and a battery pack are electrically connected is disclosed.
[0005]
As a fourth conventional example, there is a connection structure as shown in FIGS. 8 and 9, which is a conventional connection method between a main body of a portable terminal and a battery, in which a spring connector using a spring is used. I have.
[0006]
[Problems to be solved by the invention]
Recent mobile terminals have been downsized and the board on which the spring connector is mounted has become thinner, so that the board has become more likely to warp or the mating state between the device and the battery has changed due to aging. The moon has become bigger. For this reason, if a drop or vibration is applied to the device, the contact between the battery and the spring connector will be momentarily separated due to the warpage of the board on which the spring connector is mounted or the loose fit between the device and the battery. Supply stopped or power supply fluctuated.
[0007]
As a result, the work and operation contents before the impact is applied may be lost due to the influence of the power supply being disabled, or the device may malfunction due to power fluctuation.
[0008]
However, the above-described conventional examples 1 to 3 are techniques for preventing a so-called instantaneous interruption in which the contact between the battery and the connector of the main body is momentarily separated, and for detecting an instantaneous interruption which is an object of the present invention. Is different from the instantaneous interruption detection technology.
[0009]
That is, the first prior art is a technique for determining what to do later after the commercial power supply is cut off at night and the supply of the DC constant voltage Vcc is lost. There is no disclosure of what to do.
[0010]
In the second conventional example, the voltage detector detects the voltage of the battery and outputs a high impedance when the voltage is detected, and outputs 0 V when the voltage is not detected. It is to detect the occurrence of disconnection (battery contact failure), and it is unknown how this voltage detector detects disconnection of the battery.
[0011]
Further, in the third conventional example, when the male connector and the female connector of the floating connector, which is a main component thereof, are fitted with each other, the contact of the male connector is caused by its own elastic force. And the battery pack is electrically connected to the contact of the female connector. Three sets of combinations of the contacts of the male connector and the contacts of the female connector are provided, and are configured so that instantaneous interruption does not substantially occur. Accordingly, no consideration is given to instantaneous interruption of these connectors.
[0012]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made in order to solve the above-mentioned disadvantages inherent in the technology of the fourth conventional example. Therefore, an object of the present invention is to provide a method for connecting and disconnecting a battery and a connector. It is an object of the present invention to provide a novel instantaneous interruption detecting device provided with a detecting means for accurately detecting (instantaneous interruption).
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the instantaneous interruption detection device for a connection terminal according to the present invention is formed to have a lower height than a connection terminal for making a connection between a power supply circuit and a battery in a housing of a portable terminal. The first instantaneous interruption detection terminal is used to detect an instantaneous interruption between the battery and the connection terminal.
[0014]
Detecting the instantaneous interruption of the battery and the connection terminal together with the first instantaneous interruption detection terminal and a second detection terminal having a height substantially equal to that of the connection terminal. I have.
[0015]
An instantaneous interruption detection device for a connection terminal according to the present invention includes a power supply circuit disposed in a housing of a mobile terminal, a connection terminal for connecting the power supply circuit and a battery, and a connection terminal for the connection terminal and the battery. A terminal assembly having a first instantaneous interruption detecting terminal for detecting an instantaneous interruption between the first and second terminals, a first contact substrate contacting the connection terminal, and a second contacting substrate contacting the first instantaneous interruption detecting terminal. A battery having a contact substrate, an instantaneous interruption detection circuit for detecting non-contact of the first instantaneous interruption detection terminal with the second contact substrate, and the battery being energized by a detection signal of the instantaneous interruption detection circuit. A backup power supply circuit for supplying backup power to the power supply circuit.
[0016]
A second detection terminal having a height substantially equal to that of the connection terminal is provided in parallel with the first detection terminal to face the second contact substrate; The instantaneous interruption detection circuit is operated by a terminal for use.
[0017]
The backup power supply circuit is charged by the power supply circuit when the connection terminal is in contact with the first contact board and no instantaneous interruption occurs.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a preferred embodiment of the present invention will be described in detail with reference to the drawings.
[0019]
FIG. 1 is a perspective view showing an example of an instantaneous interruption detecting device which is a main part of the present invention, and FIG. 2 shows an embodiment of the present invention including the instantaneous interruption detecting device shown in FIG. It is a block block diagram.
[0020]
Configuration of the embodiment
Referring to FIGS. 1 and 2, in one embodiment of the present invention, the height of one detection terminal 1a is set higher than that of another detection terminal 1b and connection terminal 1c in order to detect an instantaneous interruption. Terminal assembly 1 having special detection terminals formed at a low height, contact substrates 3 and 31 provided on battery 2 for contacting these terminals 1a, 1b and 1c, and states of detection terminals 1a and 1b And a backup power supply circuit 6 that supplies backup power to the power supply circuit 5 or charges a backup power supply from the power supply circuit 5 according to the state of the instantaneous interruption detection circuit 4.
[0021]
Operation of Embodiment]
Next, the operation of the embodiment according to the present invention will be described with reference to the operation state diagrams of FIGS. 3A, 3B and 3C and the flowchart of FIG.
[0022]
In FIG. 3A, in a normal mounting state, the detection terminals 1a and 1b and the connection terminal 1c in the terminal assembly 1 are respectively connected to the contact substrate 3 of the battery 2 by the spring pressure of a spring (see FIG. 9) provided in the terminal. Since the detection terminals 1a and 1b are short-circuited by the contact board 3 because they are in contact with 31, the backup power supply circuit 6 is supplied with power from the power supply circuit 5 and is in a charged state.
[0023]
However, when an impact such as a drop of the portable terminal is applied, a slight gap starts to be formed between the battery 2 and the terminal assembly 1, and the state shown in FIG. 3B is obtained. There is no contact with the contact substrate 3.
[0024]
Then, the instantaneous interruption detection circuit 4 detects the open state of the detection terminals 1 a and 1 b through the lines 11 and 12 and switches the backup power supply circuit 6 to supply the backup power supply to the power supply circuit 5. I do.
[0025]
At the next moment, the state is as shown in FIG. 3C, and the connection terminal 1c, which has been supplying power from the battery 2 through the line 13, is no longer in contact with the contact board 31, so that the power supply from the battery 2 to the power supply circuit 5 Although the power cannot be supplied, the circuit operates without instantaneous interruption by the power supply from the backup power supply circuit 6.
[0026]
Although the contact between the terminal assembly 1 and the battery 2 is temporarily lost as shown in FIG. 3C, the moment based on the detachment of the detection terminal 1a from the contact board 3 at a time shortly before in FIG. 3B. The backup power supply circuit 6 is operated by the operation of the disconnection detection circuit 4, and the backup power supply is supplied from the backup power supply circuit 6 to the power supply circuit 5. At the next moment, the state of FIG. There is no instantaneous interruption in the normal state of FIG. 3a.
[0027]
Orazu are usually potential given to the contact substrate 3, contacting the substrate 3, the detecting terminal 1a, contacts 1b are simply functions as conducting plate or abutment, or not. By applying an arbitrary potential to the contact substrate 3, the instantaneous interruption can be detected only with the terminal 1a, and in that case, the terminal 1b can be omitted.
[0028]
FIG. 4 is a flowchart showing an operation flow of one example in one embodiment of the present invention.
[0029]
Referring to FIG. 4, in step S11, the instantaneous interruption detection circuit 4 determines whether the detection terminal 1a is in an open state.
[0030]
If the result of the determination in step S11 is that the detection terminal 1a is in the open state, the backup power supply circuit 6 is energized to "ON" by the instantaneous interruption detection circuit 4 in step S12, whereby the backup power supply 6 is switched off in step S13. Power is supplied to the power supply circuit 5.
[0031]
If the result of determination in step S11 is that the detection terminal 1a is not in the open state (the detection terminal 1a is in contact with the connection board 3), the process proceeds to step S14, where power is supplied from the power supply circuit 5 to the backup power supply circuit 6. (The backup power supply circuit 6 is charged).
[0032]
[Another Example of One Embodiment]
Next, another example of one embodiment of the present invention will be described with reference to the drawings.
[0033]
FIG. 5 is a schematic perspective view showing a second example in one embodiment of the present invention.
[0034]
In FIG. 5, the detection terminals 1a and 1b are arranged in parallel with the other connection terminals 1c, and have a two-row configuration.
[0035]
In the first embodiment according to the present invention, the terminals are arranged in a line because they are integrated, and the shape becomes longer as the number of detection terminals increases, and when the substrate is warped or bent, soldering is performed. It is expected that cracks will occur in the part and electrical connection will not be possible.
[0036]
However, in the second embodiment shown in FIG. 5, the two detection terminals 1a and 1b are arranged in parallel with the connection terminals 1c which have been used in the past, and are formed in a two-row configuration. Compared with the first embodiment according to the present invention, the strength against warping and bending of the substrate is improved.
[0037]
FIG. 6 is a block diagram showing a third example according to one embodiment of the present invention.
[0038]
In FIG. 6, in the third embodiment according to the present invention, the detection terminals 1a and 1b are formed separately from the other connection terminals 1c.
[0039]
In the first embodiment according to the present invention, since the terminals are arranged in a line, the shape becomes longer by the increase in the number of detection terminals, and when the substrate is warped or bent, the first embodiment is applied to the soldered portion. It is expected that cracks will occur and electrical connection will not be possible.
[0040]
However, in the third embodiment shown in FIG. 6, since the detection terminals 1a and 1b are separated from the connection terminals 1c, the warpage of the substrate is smaller than that of the first embodiment of the present invention, which has an elongated shape. Strength against bending and deflection is improved.
[0041]
In addition, since the detection terminals 1a and 1b are separated from the connection terminal 1c, the detection terminals can be mounted not only on the battery but also on a portion where instantaneous interruption easily occurs.
[0042]
FIG. 7 is a block diagram showing a fourth example according to an embodiment of the present invention.
[0043]
In FIG. 7, in the fourth embodiment according to the present invention, the detection terminal 1a whose height has been changed is separated from the other terminals 1b and 1c, and the terminals 1a and 1b are connected at the same potential.
[0044]
In the first embodiment according to the present invention, since the terminals are arranged in a line, the shape becomes longer as the number of detection terminals increases, and when the substrate is warped or flexed, the first embodiment becomes an integral type. It is expected that cracks will occur and electrical connection will not be possible.
[0045]
Further, in the integrated type of the first and second embodiments of the present invention, an increase in cost is expected by changing a conventional connection terminal.
[0046]
However, in the fourth embodiment shown in FIG. 7, since the detection terminals are separated, the strength against warping and bending of the substrate is improved as compared with the first embodiment of the present invention, which has an elongated shape.
[0047]
Further, since the detection terminals 1a and 1b are separated from each other, the detection terminals can be mounted not only on the battery but also on a portion where instantaneous interruption is likely to occur.
[0048]
Further, since only the low-height detection terminal 1a is separated, the embodiment can be implemented by combining the conventional connection terminal 1c with the low-height connection terminal. The cost can be reduced as compared with the example integrated type.
[0049]
【The invention's effect】
The present invention is configured and operates as described above. Therefore, according to the present invention, the following effects can be obtained.
[0050]
By providing a special terminal for instantaneous interruption detection, it is possible to accurately detect even non-contact with a low level between the battery and the connector, and it is possible to always supply power to the device. Even if the rattling caused by the aging becomes large, the instantaneous interruption due to the drop or the shock of the vibration is eliminated, and the immediately preceding work contents and operation contents are not erased.
[0051]
Further, since there is no fluctuation in the power supply, there is no malfunction.
[0052]
In addition, it is not necessary to increase the spring pressure of the spring inside the terminal to prevent instantaneous interruption, and it is not necessary to finely adjust the fitting state of the battery and the device.Therefore, it is possible to use a connection terminal using an inexpensive spring. It is possible to reduce man-hours related to housing design.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of an instantaneous interruption detecting device which is a main part of the present invention.
FIG. 2 is a block diagram showing an embodiment of the present invention including the instantaneous interruption detecting device shown in FIG. 1;
FIG. 3a is an operational state diagram of one embodiment of the present invention.
FIG. 3b is an operational state diagram of one embodiment of the present invention.
FIG. 3c is an operational state diagram of one embodiment of the present invention.
FIG. 4 is a flowchart showing an operation flow of one example according to one embodiment of the present invention.
FIG. 5 is a schematic perspective view showing a second example in one embodiment of the present invention.
FIG. 6 is a block diagram showing a third example of one embodiment of the present invention.
FIG. 7 is a block diagram showing a fourth example according to an embodiment of the present invention.
FIG. 8 is a perspective view showing a conventional connection terminal.
FIG. 9 is a sectional view showing a conventional connection terminal.
[Explanation of symbols]
1, 1 'terminal assembly 1a, 1b detection terminal 1c connection terminal 2 battery 3 contact board 3a, 3b contact board 4 instantaneous interruption detection circuit 5 power supply circuit 6 backup power supply circuit

Claims (2)

A power supply circuit disposed in the housing of the mobile terminal, a connection terminal for connecting the power supply circuit and the battery, and a lower height than the connection terminal formed between the connection terminal and the battery; A terminal assembly having a first instantaneous interruption detecting terminal for detecting an instantaneous interruption and a second instantaneous interruption detecting terminal having substantially the same height as the connection terminal; And a second contact board that is in contact with the first and second instantaneous interruption detection terminals, and a battery of the first and second instantaneous interruption detection terminals with respect to the second contact substrate. An instantaneous interruption detection circuit for detecting non-contact; and a backup power supply circuit energized by a detection signal of the instantaneous interruption detection circuit to supply backup power to the power supply circuit, wherein the first and second instantaneous interruptions are provided. A detection terminal is arranged in parallel with a plurality of the connection terminals and has a two-row configuration. Interruption detecting device connection terminal, characterized in that the. A power supply circuit disposed in the housing of the mobile terminal, a connection terminal for connecting the power supply circuit and the battery, and a lower height than the connection terminal formed between the connection terminal and the battery; A terminal assembly having a first instantaneous interruption detecting terminal for detecting an instantaneous interruption and a second instantaneous interruption detecting terminal having substantially the same height as the connection terminal; And a second contact board that is in contact with the first and second instantaneous interruption detection terminals, and a battery of the first and second instantaneous interruption detection terminals with respect to the second contact substrate. An instantaneous interruption detection circuit for detecting non-contact; and a backup power supply circuit which is energized by a detection signal of the instantaneous interruption detection circuit and supplies backup power to the power supply circuit. Terminals other than the terminal assembly where the connection terminals are disposed Interruption detecting device connection terminal, characterized in that disposed.

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