JP4006334B2 - Electronics - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic device having a waterproof function and capable of using a plurality of types of battery packs.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, some electronic devices that can use a plurality of types of battery packs are configured to determine the type of battery pack that is installed and to use a method according to the type.
In particular, in the case of an electronic device having a charging function for a mounted battery pack, if charging is started even though the mounted battery pack is a primary battery that cannot be charged, an accident such as liquid leakage or rupture may occur. There is a risk of occurring.
Therefore, in the case of an electronic device having a charging function for a mounted battery pack, it is necessary to determine whether the mounted battery pack is a primary battery or a rechargeable secondary battery.
Therefore, the user has to check whether the attached battery pack is a primary battery or a secondary battery and determine whether to start charging.
[0003]
Therefore, various functions have been proposed for automatically detecting the type of attached battery pack.
For example, there has been proposed a charger having a function of detecting whether a battery pack using a nickel cadmium storage battery or a battery pack using a lead storage battery by a magnetic sensor or a discrimination groove. (For example, see Patent Document 1)
In addition, a battery identification circuit has been proposed that has a function of discriminating the type of attached battery pack based on the position of the movable magnet. (For example, see Patent Document 2)
In addition to the distinction as to whether or not charging is possible as described above, it may be necessary to change the operating conditions of the electronic device depending on the magnitude of the output current of the battery.
For example, in the case of a battery pack in which the output current cannot be increased, for example, in the case of a transceiver, it may be necessary to perform control to limit transmission power.
[0004]
[Patent Document 1]
Japanese Patent No. 2638094 (2nd page, FIG. 1)
[Patent Document 2]
Japanese Patent No. 2842844 (pages 2, 3 and 1)
[0005]
[Problems to be solved by the invention]
The technique described in Patent Document 1 described above is configured by charging the battery pack using a nickel cadmium battery with nickel, which is a magnetic material, and not using the magnetic material for the battery pack using a lead-acid battery. Although it is configured to be identifiable with a magnetic sensor provided on the container body side, since it is necessary to configure it depending on whether the exterior of the battery pack is a magnetic body, the problem of low versatility, When both of the battery body exteriors are made of a magnetic material, there is a problem that both are sensitive to the magnetic sensor and are difficult to identify.
In the technique described in Patent Document 2, a plurality of magnets whose position can be moved are provided on the battery pack side, and a hall element capable of detecting the position of the magnet is provided on the apparatus body side. The battery pack type is determined based on the position of the magnet detected by the Hall element, and the charging conditions are switched according to the type. However, both the battery pack side and the device body side are complicated. There was a problem that a proper configuration was necessary.
[0006]
Therefore, the present invention proposes a technique capable of identifying the type of battery pack with an extremely simple configuration, and an object of the present invention is to provide an identification technique that can be adopted even for a waterproof device body and a battery pack. It is a thing.
[0007]
[Means for Solving the Problems]
An electronic apparatus according to claim 1 of the present invention is provided.
In an electronic device configured to be used by attaching a battery pack to a main body in which an electronic circuit is disposed inside a casing constituent member,
The battery pack and the main body are waterproof,
The battery pack includes an attaching means for attaching a permanent magnet to a predetermined place according to the type of the battery pack,
The main body is provided with magnetic detection means at a location corresponding to the permanent magnet mounted on the battery pack, and at least a case component member interposed between the permanent magnet and the magnetic detection means has a magnetic force line passage assist structure. And
In the magnetic field line passage assist structure, at least the casing constituent member interposed between the permanent magnet and the magnetic detection means is made of a non-magnetic metal, and the non-magnetic metal casing constituent member is a waterproof seal. It was configured by providing a sealed hole.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an electronic apparatus according to the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
[0010]
FIG. 1 is a side sectional view of an electronic apparatus (portable transceiver) of the present invention.
In the figure,
Reference numeral 1 denotes a portable transceiver as an electronic device, which is configured to be used by attaching a detachable battery pack 2 containing an alkaline battery to a main body 3.
The battery pack 2 is configured such that five AA alkaline batteries B are accommodated in a case 20 and connected in series. Reference numeral 21 denotes an electrode in which five batteries B are connected in series.
The battery pack 2 has a waterproof function so that the internal battery housing space is waterproofed to the outside by closing the waterproof lid 22. At this time, the waterproof packing 23 disposed around the waterproof lid 22 provides a watertight state between the edge of the waterproof lid 22 and the inner surface of the housing 20 of the battery pack 2, thereby realizing a waterproof function.
A permanent magnet M is fixed at a predetermined position on the back surface (battery storage space side) of the waterproof lid 22.
The casing 20 and the waterproof lid 22 realize a waterproof function on the battery pack side.
[0011]
The battery pack 2 </ b> A is configured so that two rectangular lithium ion batteries A are accommodated in a case 24 and connected in series. The battery pack 2A also has a waterproof function as described above.
However, there is no permanent magnet on the back surface (battery storage space side) of the waterproof lid 25 of the battery pack 2A. The outer shape of the battery pack 2A is substantially the same as that of the battery pack 2 except that the stored battery is a lithium ion battery and there is no permanent magnet.
In this way, the presence or absence of the permanent magnet M distinguishes whether the internal battery is an alkaline battery or a lithium ion battery.
[0012]
The main body 3 has a transmission / reception function necessary as a transceiver in a housing 30 using a printed circuit board C or the like.
The main body 3 has a waterproof function so that the internal space is waterproofed to the outside by closing the waterproof lid 32. At this time, the waterproof packing 33 disposed around the waterproof lid 32 provides a watertight state between the edge of the waterproof lid 32 and the inner surface of the housing 30 of the main body 3, thereby realizing a waterproof function.
As a matter of course, the speaker 34, the operation button 35, the operation knob 36 and the like are also waterproof.
The waterproof lid 32 is provided with a hole 4 at a position corresponding to the permanent magnet M with the battery pack 2 attached. The hole 4 is sealed with a waterproof seal 5 having air permeability.
A casing constituent member is formed by the casing 30 and the waterproof lid 32.
[0013]
The printed circuit board C is provided with a Hall IC 6 as a magnetic detection means at a position corresponding to the hole 4. The printed circuit board C is configured with a control circuit as shown in FIG.
In the state where the battery pack is mounted, two waterproof lids 22 and 32 are interposed between the Hall IC 6 and the permanent magnet M. The waterproof lid 22 on the battery pack side is made of synthetic resin, so that the Hall IC Does not significantly affect the detection of the permanent magnet M. Further, the waterproof lid 32 on the main body side is preferably made of metal in order to obtain an electromagnetic shielding effect, but it is made of a non-magnetic metal, and by providing the hole 4, it helps to pass the lines of magnetic force. Therefore, the detection of the permanent magnet M by the Hall IC is not greatly affected. The hole 4 is sealed with a waterproof seal 5 having air permeability in order to ensure ventilation due to a pressure change in the space inside the main body 3.
The holes 4 provided in the waterproof lid 32 form a magnetic force line passage assist structure.
[0014]
In addition, 31 is an electrode for receiving supply of electric power by being pressed by the electrode 21 on the battery pack side when the battery pack is mounted. The electrode 31 incorporates an elastic body that biases toward the electrode 21 so as to be securely connected to the electrode 21. Moreover, the packing for waterproofing the contact part of electrodes is provided.
[0015]
In FIG.
Reference numeral 7 denotes a transceiver transmission / reception unit to which necessary components such as a speaker 34, an operation switch 35, an operation knob 36, a microphone 37, an antenna 38, and the like are connected.
The magnetic detection signal output from the Hall IC 6 is processed by the determination circuit 61 according to a predetermined determination criterion, and a detection signal indicating whether or not the permanent magnet M has been detected is output to the transmission / reception unit 7.
In the transmission / reception unit 7, when the permanent magnet M is detected by the Hall IC 6 in the transmission state, the transmission power limiting circuit 71 is switched to the low output side, and the permanent magnet M is not detected. The transmission power limiting circuit 71 is switched to the high output side.
Reference numeral 31 denotes an electrode for obtaining an electrical connection state by being pressed by the electrode 21 on the battery pack side. The electric power input from the battery pack side is supplied from the electrode 31 to each part of the main body.
[0016]
Since it is configured as described above, when the battery pack 2 using an alkaline battery is attached to the main body 3, the Hall IC 6 detects the permanent magnet M provided in the battery pack 2, and the discrimination circuit 61 Outputs a detection signal indicating that the permanent magnet M has been detected to the transmission / reception unit 7. As a result, the transmission power limiting circuit 71 in the transmission / reception unit 7 is switched to the low output side, and only permits operations up to a predetermined transmission output less than the maximum output of the transceiver 1.
Further, when a battery pack 2A using a lithium ion battery is attached to the main body 3, since the permanent magnet M is not provided in the battery pack 2A, the Hall IC 6 does not detect the permanent magnet, and the determination circuit 61 Outputs a detection signal that the permanent magnet M is not detected to the transmission / reception unit 7. As a result, the transmission power limiting circuit 71 in the transmission / reception unit 7 is switched to the high output side and permits operation up to the maximum output of the transceiver 1.
[0017]
In this way, it can be used by limiting the transmission output suitable for the type of battery pack installed, so that the quality of the transmitted wave will not deteriorate and the battery will be rapidly consumed and communication will be impossible Can be prevented.
[0018]
In the description based on FIGS. 1 and 2, the case where the type of the battery pack is detected and the power on the main body side is limited according to the type of the battery pack has been described as an example, but will be described below. As described above, when a rechargeable battery pack is used, the type of the battery pack can be detected and charged according to the charging condition of the battery pack.
FIG. 3 shows a configuration example in which the charging conditions are switched according to the type of the battery pack.
In FIG. 3, the configuration around the transmission / reception unit 7 and the configuration of the Hall IC 6 and the determination circuit 61 are the same as those in FIG.
In the figure, reference numeral 8 denotes a power supply circuit using an AC adapter 83, which is configured to supply power to each unit including the transmission / reception unit 7.
A charging condition switching circuit 81 is configured to automatically switch charging conditions such as a charging current in accordance with a detection signal output from the determination circuit 61.
An electrode 82 is pressed by the battery pack side electrode 21 to obtain an electrically connected state.
[0019]
In the case of the configuration as shown in FIG. 3, for example, in the case of a battery pack using a secondary battery, a permanent magnet is not attached as in the battery pack 2A of FIG. In this case, a permanent magnet is attached as in the battery pack 2 in FIG. 1 to distinguish whether or not the battery being used can be charged.
In the charging condition switching circuit 81 shown in FIG. 3, if a permanent magnet is not detected, it can be determined that the battery pack is rechargeable. Therefore, charging is permitted, and charging is not possible when a permanent magnet is detected. Since it can be determined that the battery pack is used, it is automatically switched so that charging is not permitted.
In this way, it is possible to prevent accidents such as liquid leakage and rupture by accidentally charging the primary battery.
[0020]
On the battery pack side, by changing the direction of the magnetic lines of force of the permanent magnet according to the type of the battery pack, the three types of battery packs can be distinguished from the case where there is no permanent magnet.
Furthermore, the place where the permanent magnet is arranged is changed according to the type of the battery, and on the main body side, the place where the permanent magnet is arranged is detected by detecting the place of the permanent magnet arranged by the plurality of Hall ICs. depending on the, and power conditions of use in the main body side, but it may also be configured to switch the charging conditions of the battery pack.
Further, the magnetic detection means is not limited to a Hall IC using a Hall element, but a magnetoresistive element and various magnetic sensors can be used.
[0021]
【The invention's effect】
According to the first aspect of the present invention, since the magnetic force line passage assist structure is formed on the casing constituent member interposed between the permanent magnet and the magnetic detection means, the magnetic detection means provided on the main body is attached to the battery pack. The presence or absence of a permanent magnet can be detected more reliably.
Also, with the housing components and the non-magnetic metal, the so constructed field lines passing the auxiliary structure by providing a non-magnetic metal housing configuration member in the hole, the shielding effect can be obtained In addition, the above effects can be obtained.
Further, since the non-magnetic metal casing constituent member is provided with a hole sealed with a waterproof seal, the above-described effects can be obtained even with a waterproof casing.
[Brief description of the drawings]
FIG. 1 is a side sectional view of an electronic device (portable transceiver) according to the present invention in an exploded state.
FIG. 2 is a block diagram of a main part of the portable transceiver.
FIG. 3 is a block diagram of another embodiment of the main part of the portable transceiver.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Portable transceiver , electronic device 2 Battery pack 2A Battery pack 3 Main body 30 Case 32 Waterproof cover 33 Waterproof packing 4 Hole 5 Waterproof seal 6 Magnetic detection means, Hall IC
30, 32 Case constituent member 32, 4 Line of magnetic force passage assist structure M Permanent magnet

Claims (1)

Oite battery pack, the electronic equipment that is configured to use by mounting the body internal to the electronic circuit is disposed in the housing component,
The battery pack and the main body are waterproof,
The battery pack includes an attaching means for attaching a permanent magnet to a predetermined place according to the type of the battery pack,
The main body is provided with magnetic detection means at a location corresponding to the permanent magnet mounted on the battery pack, and at least a case component member interposed between the permanent magnet and the magnetic detection means has a magnetic force line passage assist structure. And
In the magnetic field line passage assist structure, at least the casing constituent member interposed between the permanent magnet and the magnetic detection means is made of a non-magnetic metal, and the non-magnetic metal casing constituent member is a waterproof seal. An electronic apparatus comprising a sealed hole .

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