JP4601976B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device that can be used interchangeably by mounting different types of batteries having different shapes, sizes, electrode arrangements, and the like.

  In portable electronic devices, secondary batteries such as lithium batteries that can be used repeatedly by charging are widely used, but they can be easily obtained in case they cannot be charged immediately when they run out during use. It is desired to be able to install and use possible dry batteries interchangeably.

  Conventionally, in order to install and use such different types of batteries interchangeably, for example, electronic devices having a battery housing chamber as shown in FIGS. 13A and 13B have been proposed. In this conventional example, in the battery housing chamber 62 connected to the electronic device main body 61 provided with a power-supplied part that operates by receiving power supply from the battery, the same polarity of the dry battery B21 and the lithium battery B22 having different electrode arrangements, respectively. For example, the electrode terminal connected to the negative electrode is shared by one electrode terminal 63, and individual electrode terminals 64 and 65 are provided as electrode terminals connected to the positive electrode of each battery (for example, Patent Document 1). ).

JP 2004-30968 A

  However, in the conventional electronic device, the distance between the electrodes when the two dry batteries B21 are juxtaposed in the battery housing chamber 62 is different from the distance between the electrodes of the lithium battery B22. It is necessary to provide a dedicated electrode terminal 65 for connection to the electrode terminals 63 and 64 connected to each of the positive electrode and the negative electrode of the two dry batteries B21 juxtaposed. For this reason, there is less margin in the distance between the electrodes of the lithium battery, and it is necessary to determine the distance between the electrodes of the lithium battery according to the distance between the positive electrode and the negative electrode of the two dry batteries B21 arranged side by side. There was a circumstance that there were restrictions on the lithium battery. Further, the external size of the lithium battery B22 is limited by the size in which two dry batteries B21 are juxtaposed, and it is difficult to increase the capacity of the lithium battery in a limited space.

  The present invention has been made in view of the above circumstances, and in an electronic device having a power-supplied portion capable of supplying power from different types of batteries, an electrode in a battery having a structure having a positive electrode terminal and a negative electrode terminal at the same end. It is an object of the present invention to provide an electronic device that can improve the margin of the inter-distance and relax the restrictions on usable batteries.

The electronic device according to the present invention is an electronic device having a power-supplied part capable of supplying power from different types of batteries, and a first type battery having a positive terminal and a negative terminal at the same end, and an opposite end A battery accommodating chamber in which a second type of battery having a positive electrode terminal on one side and a negative electrode terminal on the other end is mounted interchangeably, and a first disposed at one end of the battery accommodating chamber. An electrode terminal and a second electrode terminal; a third electrode terminal and a fourth electrode terminal disposed at the other end opposite to the one end of the battery housing chamber; comprising a battery changeover switch which is switched in response to the mounting of the battery or the second type of cell, a time of mounting the front Symbol first type of battery, one terminal of the first type of cell is the first contacts with the third electrode terminal, the other terminal of the first type of cell Contacting the serial fourth electrode terminal, when mounting of the second type of battery, with one terminal of the first battery of the second type in contact with said first electrode terminal, the other terminal Is in contact with the third electrode terminal, one terminal of the second battery of the second type is in contact with the second electrode terminal, and the other terminal is in contact with the fourth electrode terminal. When the first type battery is mounted, the battery changeover switch causes the second electrode terminal, the third electrode terminal, and the power-supplied portion to be in a conductive state, and the second type battery is mounted. Sometimes, the second electrode terminal, the third electrode terminal, and the power-supplied portion are brought into a non-conductive state, and the first electrode terminal and the second electrode terminal are in the battery housing chamber. It can be rotated and stored at the bottom, and protrudes from the power-supplied part into the battery storage chamber. Wherein the spring member and the rotating contact with portions of the first electrode terminal and the second electrode terminals extending until the axis near the is to supply power to the power-supplied portion or the battery changeover switch.

  With this configuration, the margin of the inter-electrode distance of the first type battery can be improved, and restrictions on the usable battery can be relaxed.

  In addition, as one aspect of the present invention, in the above electronic device, the first electrode terminal and the second electrode terminal can be rotated into the battery housing chamber.

  With this configuration, it is possible to use the first type of battery having a large outer size, and the capacity of the battery in a limited space can be increased.

  In one embodiment of the present invention, in the electronic device, the first electrode terminal and the second electrode terminal are connected to the power-supplied portion via a spring member that connects each terminal to a wiring board. Is included.

  With this configuration, the first and second electrode terminals can be easily connected to the wiring board of the electronic device, and the assemblability is improved.

  In addition, as one aspect of the present invention, in the above electronic device, the battery switching switch may include a switch that operates in accordance with rotation of the first electrode terminal and the second electrode terminal.

  With this configuration, the third and fourth electrode terminals can be shared by the first type battery and the second type battery, and power can be reliably supplied to the power-supplied part according to the type of battery to be used. It becomes possible to supply.

  In addition, as one aspect of the present invention, in the electronic device described above, the battery switching switch may include a switch that conducts when an input voltage is equal to or higher than a predetermined value.

  With this configuration, the third and fourth electrode terminals can be shared by the first type battery and the second type battery, and power can be reliably supplied to the power-supplied part according to the type of battery to be used. It becomes possible to supply.

  In one embodiment of the present invention, in the above electronic device, the first type of battery is a lithium secondary battery, and the second type of battery is a dry battery.

  With this configuration, in a configuration in which lithium secondary batteries and dry batteries can be shared, the margin of the distance between the electrodes of the lithium secondary battery can be improved, and restrictions on the usable lithium secondary battery can be relaxed. Therefore, it is possible to use a lithium secondary battery having a large outer size, and it is possible to increase the capacity of the lithium secondary battery in a limited space.

  According to the present invention, in an electronic device having a power-supplied part capable of supplying power from different types of batteries, the margin of interelectrode distance in a battery having a structure having a positive electrode terminal and a negative electrode terminal at the same end is improved. Thus, it is possible to provide an electronic device capable of relaxing restrictions on usable batteries.

  In an embodiment of the present invention, as an example of an electronic device having a power-supplied part capable of supplying power from different types of batteries, in each system such as logistics, production management, and POS, a label printed or pasted on an article A configuration applied to a portable barcode reader for reading a barcode will be exemplified.

  FIG. 1 is an exploded perspective view showing a schematic configuration of a barcode reader according to an embodiment of the present invention. The bar code reader includes an upper case 1 including a key operation unit, a main substrate 2 including a bar code reading unit, a bar code recognition processing unit, and a control unit, and a lower case 3 including a battery storage chamber. Is done. The main board 2 has a structure that is housed inside when the upper case 1 and the lower case 3 are combined.

  In the barcode reader of the present embodiment, for power supply, an AA battery B2 which is a primary battery corresponding to an example of a second type battery and a secondary battery corresponding to an example of a first type battery are used. A lithium battery B1 having a nominal voltage of 3.7V can be used. Then, two cylindrical AA batteries B2 and one lithium battery having the same width as those of the AA batteries B2 juxtaposed in the radial direction and having electrode terminals 4 at the same rectangular parallelepiped end. Share with B1.

  The main board 2 has a positive electrode and a negative electrode terminal of the lithium battery B1, or a common electrode provided with electrode terminals CN3 and CN4, which will be described later, which can be elastically contacted with the respective negative electrode terminals of the AA dry battery B2 when two batteries are juxtaposed. A terminal portion 21 and two leaf spring contacts 22 for connecting electrode terminals CN1 and CN2, which will be described later, which are in elastic contact with the positive terminals of the two AA batteries B2 juxtaposed, are provided by soldering. It is done.

  The lower case 3 includes a battery housing chamber 31 and a battery cover 32. Also, in the battery accommodating chamber 31, a dry battery electrode terminal portion 33 having electrode terminals CN1 and CN2 to be described later that elastically contact each positive electrode terminal of the AA dry battery B2 when two are placed side by side is attached.

Next, the structure of the battery housing chamber 31 will be described in detail with reference to FIGS.
FIG. 2 is a perspective view showing the configuration of the battery housing chamber 31. The battery housing chamber 31 is formed in a box shape with the upper side opened by resin molding, and a pair of side walls 34a and 34b disposed to face each other at intervals that substantially engage the side surface in the width direction of the lithium battery B1. A bottom portion 35 having a recess 36 that engages with a part of a cylindrical portion of the three dry battery B2 is provided.

  3 and 4 are perspective views showing a state when the dry battery electrode terminal portion 33 is attached to the battery housing chamber 31. FIG. Shaft portions 37a and 37b provided so as to protrude from both side ends of the dry battery electrode terminal portion 33 are fitted into holes 38a and 38b formed in the side walls 34a and 34b, respectively. Thereby, electrode terminals CN1 and CN2 described later in the dry battery electrode terminal portion 33 are elastically engaged with and connected to the leaf spring contact 22 protruding from the bottom portion 35.

  FIG. 5 is a perspective view showing the undulated state of the dry battery electrode terminal portion 33 attached to the battery housing chamber 31. The dry battery electrode terminal portion 33 attached to the battery housing chamber 31 as described above rotates about the shaft portions 37a and 37b and can be raised and lowered with respect to the bottom portion 35.

  FIG. 6 is an exploded perspective view showing a detailed configuration of the dry battery electrode terminal portion 33. The dry battery electrode terminal portion 33 has a connection terminal holder 39 and electrode terminals CN1 and CN2. The connection terminal holder 39 is formed by resin molding, and is provided with a groove 40 for inserting the electrode terminals CN1 and CN2 and a claw 41 for locking the electrode terminals CN1 and CN2. The electrode terminals CN1 and CN2 are spiral springs made of a copper alloy linear material having elasticity such as phosphor bronze or white and white, and an inverted L-shaped locking portion 42 is formed at one end.

  7 and 8 are views showing an assembled state of the dry battery electrode terminal portion 33, FIG. 7 is a perspective view when the electrode terminals CN1 and CN2 are inserted into the connection terminal holder 39, and FIG. 8 is this dry battery electrode. It is the top view which looked at the terminal part 33 from 3 directions. As shown in FIGS. 7 and 8, the locking portions 42 of the electrode terminals CN <b> 1 and CN <b> 2 are locked to the claws 41 and fixed to the connection terminal holder 39.

  Next, in the battery housing chamber 31 configured as described above, the state in which the lithium battery B1 and the AA battery B2 are respectively mounted is shown in FIGS. 9 (a) to 9 (c) and FIGS. 10 (a) and 10 (b). Will be described.

  Fig.9 (a) is sectional drawing of the battery storage chamber 31 which shows the state before mounting | wearing with a lithium battery. The dry battery electrode terminal portion 33 is lying on the bottom portion 35. FIG. 9B is a cross-sectional view of the battery housing chamber 31 showing a state in which the lithium battery B1 is mounted. The substantially rectangular parallelepiped lithium battery B1 is housed in the space of the battery housing chamber 31, and the positive and negative electrode terminals are in contact with the electrode terminals CN3 and CN4 of the common electrode terminal portion 21 in an elastically biased state. Held. At this time, the lower surface of the lithium battery B1 in the drawing is in contact with the upper surface of the bottom portion 35 so that the position in the height direction is regulated, and the height of the lithium battery B1 that is generally thinner than the dry battery is adjusted. .

  FIG. 9C is a cross-sectional view of the battery housing chamber 31 showing a state where the AA battery B2 is mounted. The substantially cylindrical AA battery B2 is housed and positioned in the recess of the bottom 35 in the space of the battery housing chamber 31, and elastically with the electrode terminals CN1 and CN2 of the dry battery electrode terminal portion 33 in which each positive electrode terminal stands. The negative terminal is contacted and held in an elastically biased state with the electrode terminals CN3 and CN4 of the common electrode terminal portion 21. At this time, the outer peripheral surface of the AA battery B2 is in contact with the arcuate surface of the recess of the bottom portion 35, and the position in the width direction and the height direction is regulated.

  FIG. 10A is a plan view seen from above the opening of the battery housing chamber 31 in a state where the lithium battery B1 is mounted. The lithium battery B1 is housed in the space of the battery housing chamber 31, the position in the width direction is regulated by the side walls 34a and 34b, and the positive and negative electrode terminals are connected to the electrode terminals CN3 and CN4 of the common electrode terminal portion 21, respectively. It is held in contact in an elastically biased state.

  FIG. 10B is a plan view seen from above the opening of the battery housing chamber 31 showing a state where two AA batteries B2 are mounted side by side. The AA battery B2 is housed in the recess of the battery housing chamber 31, contacts the electrode terminals CN1 and CN2 of the dry battery electrode terminal portion 33 in which each positive electrode terminal stands up in an elastically biased state, and shares the negative electrode terminal. The electrode terminals CN3 and CN4 of the electrode terminal portion 21 are held in contact with each other while being elastically biased. Here, in the electrode terminals CN3 and CN4 of the shared electrode terminal portion 21, the distance between the electrodes when connecting the lithium battery B1 and the distance between the electrodes when connecting two AA batteries B2 arranged side by side are not necessarily the same. Instead, different configurations are possible.

  FIG. 11 is a block diagram showing an electrical configuration when the lithium battery B1 is installed in the barcode reader of this embodiment, and FIG. 12 shows an electrical configuration when the AA dry battery B2 is installed in the barcode reader of this embodiment. It is a block diagram which shows a typical structure.

  In this barcode reader, electrode terminals CN1 and CN2 that connect the positive electrode of the AA dry battery B2, and an electrode terminal CN3 that is commonly connected to the electrode terminal CN2 and connects the negative electrode of the AA dry battery B2 and the positive electrode of the lithium battery B1, It has an electrode terminal CN4 that is grounded and connects the negative electrode of the AA dry battery B2 and the negative electrode of the lithium battery B1. Further, the voltage of each battery is detected by being connected to the commonly connected electrode terminals CN2 and CN3, and the battery changeover switch 50 that conducts when the detected voltage is a predetermined value, for example, 3 V or more, the electrode terminal CN1 and the battery changeover. A battery current backflow prevention diode D1, D2 having an anode connected to the switch 50 and a cathode connected in common, and a power supply control circuit 51 connected to a cathode connected in common to the diodes D1, D2, respectively. Yes. Further, a CPU 52 for controlling each process such as barcode reading and recognition and each part of the apparatus, a display device 53 for displaying a barcode reading result and the like, a flash ROM 54 and a RAM 55 for storing various data, operation programs, and the like. It has. The power supply control circuit 51, the CPU 52, the display device 53, the flash ROM 54, and the RAM 55 are mounted on the main board 2.

  Next, the power supply operation by the lithium battery B1 and the AA battery B2 to the barcode reader body configured as described above will be described.

  First, as shown in FIG. 11, when the lithium battery B1 is used, the voltage of the positive electrode of the lithium battery B1 connected to the electrode terminal CN3 is detected by the battery changeover switch 50. The nominal voltage of the lithium battery B1 is 3.7V, which exceeds a predetermined value 3V, so that the switch is turned on. As a result, the power supply voltage 3.7V is supplied to the power supply control circuit 51 via the diode D2.

  On the other hand, when the AA battery B2 is used as in the configuration shown in FIG. 12, the voltage of the positive electrode of the AA dry battery B2 connected to the electrode terminal CN2 and the voltage of the negative electrode connected to the electrode terminal CN3 are set to the battery changeover switch 50. Detect with. A voltage 1.5V for one AA battery is applied to the battery changeover switch 50. Since the voltage is 3V or less, the switch is turned off. Accordingly, the voltage 3V is supplied from the electrode terminal CN1 of the AA batteries B2 connected in series to the power supply control circuit 51 via the diode D1.

  As described above, in the embodiment of the present invention, in the barcode reader having the power supply control circuit capable of supplying power from the lithium battery and the dry battery, the battery housing chamber 31 is formed in a box shape with the top opened, Electrode terminals CN3 and CN4 that can elastically contact positive and negative electrode terminals provided at the same end of the lithium battery B1 and negative electrodes of the AA dry battery B2 when two batteries are juxtaposed on one end side, respectively. The electrode terminal CN1 and CN2 which elastically contact each positive electrode terminal of the AA dry battery B2 juxtaposed are provided on the other end side with respect to the bottom 35 of the battery housing chamber 31. Thus, the battery electrode terminal portion 33 can be undulated freely. Here, the electrode terminal CN1 is connected to the power supply control circuit 51, and the electrode terminals CN2 and CN3 are connected in common. The battery switching switch is turned on when the lithium battery B1 is attached and is turned off when the AA battery B2 is attached. The electrode terminal CN4 is grounded by being connected to the power supply control circuit 51 through 50.

  In this way, in the battery housing chamber 31, the negative electrode side electrodes of the two AA dry batteries B2 are aligned so as to be adjacent to each other and arranged on the terminal side of the lithium battery B1, so that the same end portion of the lithium battery B1 is provided. The margin of the inter-electrode distance (inter-terminal dimension) at each of the positive and negative electrode terminals provided in is improved, and restrictions on usable batteries can be relaxed. Further, by making the dry battery electrode terminal portion 33 provided on the positive electrode side of the AA dry battery B2 movable, the length of the lithium battery B1 can be increased, and an arbitrary size battery can be used. Further, the dry battery electrode terminal portion 33 can be rotated to the bottom side of the battery housing chamber 31, and the dry battery electrode terminal portion 33 is laid down on the bottom portion 35 when the lithium battery B1 is used, so that it is longer than the length of the AA dry battery B2. The use of the lithium battery B1 is also possible. Thus, it is possible to use a lithium battery having a large outer size, and it is possible to increase the capacity of the battery in a limited space of the battery housing chamber 31. Furthermore, the dry battery electrode terminal portion 33 is elastically engaged with the leaf spring contact 22 soldered to the main board 2, thereby facilitating electrical connection and improving assemblability.

  In the above description of the present embodiment, the battery changeover switch 50 for controlling conduction and non-conduction of the electrode terminals is connected to the commonly connected electrode terminals CN2 and CN3, and the battery changeover switch 50 causes the electrode terminals to be connected. Although the voltage of the battery connected to CN2 and CN3 is detected and conduction or non-conduction is controlled according to the detected value, other modifications are also conceivable. For example, a configuration may be provided in which a switch that is conductive or non-conductive is interlocked with the state of the dry battery electrode terminal portion 33 that falls or stands when the lithium battery B1 and the AA dry battery B2 are mounted.

  Thus, according to the present embodiment, in an electronic device having a power-supplied part capable of supplying power from different types of batteries, such as a lithium battery and a dry battery, a positive electrode terminal and a negative electrode terminal at the same end of the lithium battery or the like It is possible to improve the margin of the distance between the electrodes in a battery having a structure including the above, and to ease restrictions on usable batteries. In addition, by making the electrode terminal for a dry battery movable, it is possible to use a battery having a large outer size when using a lithium battery or the like, and to increase the capacity of the battery in a limited space.

  The present invention, in an electronic device having a power-supplied part capable of supplying power from different types of batteries, improves the margin of the interelectrode distance in a battery having a structure including a positive electrode terminal and a negative electrode terminal at the same end, It has the effect of relaxing the restrictions on the batteries that can be used, and is useful for electronic devices that can be used interchangeably by mounting different types of batteries with different shapes, sizes, electrode arrangements, etc. is there.

1 is an exploded perspective view showing a schematic configuration of a barcode reader according to an embodiment of the present invention. The perspective view which shows the structure of the battery storage chamber which concerns on this embodiment. The perspective view which shows the state at the time of attaching a dry battery electrode terminal part to the battery storage chamber which concerns on this embodiment. The perspective view which shows the state at the time of attaching a dry battery electrode terminal part to the battery storage chamber which concerns on this embodiment. The perspective view which shows the undulation state of the dry battery electrode terminal part attached to the battery storage chamber which concerns on this embodiment The exploded perspective view which shows the detailed structure of the dry battery electrode terminal part which concerns on this embodiment The perspective view which shows the assembly state of the dry battery electrode terminal part which concerns on this embodiment. The top view which shows the assembly state of the dry battery electrode terminal part which concerns on this embodiment (A) A cross-sectional view showing a state before a lithium battery is mounted in a battery housing chamber according to an embodiment of the present invention, (b) a cross section showing a state in which a lithium battery is mounted in a battery housing chamber according to an embodiment of the present invention. (C) Sectional drawing which shows the state which mounted | wore the battery storage chamber which concerns on embodiment of this invention with the AA battery (A) A plan view showing a state in which a lithium battery is mounted in a battery housing chamber according to an embodiment of the present invention, (b) a plan view showing a state in which an AA dry battery is mounted in a battery housing chamber according to an embodiment of the present invention. The block diagram which shows the electrical constitution at the time of mounting | wearing with the lithium battery in the barcode reader of this embodiment. The block diagram which shows the electrical constitution at the time of mounting the AA battery in the barcode reader of this embodiment (A) The figure which shows the mounting state of the dry battery in the battery storage chamber of a prior art example, (b) The figure which shows the mounting state of the lithium battery in the battery storage chamber of a prior art example

Explanation of symbols

B1 Lithium battery B2 Dry battery CN1 to CN4 Electrode terminal 2 Main board 3 Lower case 21 Shared electrode terminal 22 Leaf spring contact 31 Battery storage chamber 32 Battery cover 33 Dry battery electrode terminal 50 Battery switch 51 Power control circuit

Claims (3)

In an electronic device having a power-supplied part capable of supplying power from different types of batteries,
A first type battery having a positive electrode terminal and a negative electrode terminal at the same end, and a second type battery having a positive electrode terminal at one of the opposite ends and a negative electrode terminal at the other end are interchangeably mounted. A battery compartment,
A first electrode terminal and a second electrode terminal disposed at one end of the battery housing chamber;
A third electrode terminal and a fourth electrode terminal disposed at the other end facing the one end of the battery housing chamber;
A battery changeover switch that is switched according to the attachment of the first type of battery or the second type of battery ,
Before Symbol time of mounting the first type of battery, with one terminal of the first type of cell in contact with the third electrode terminal, the other terminal of the first type of cell is the fourth In contact with the electrode terminals of
When the second type battery is attached, one terminal of the second type first battery contacts the first electrode terminal, and the other terminal contacts the third electrode terminal. , One terminal of the second battery of the second type contacts the second electrode terminal, and the other terminal contacts the fourth electrode terminal,
The battery selector switch switches the second electrode terminal, the third electrode terminal, and the power-supplied part to a conductive state when the first type battery is mounted, and when the second type battery is mounted. The second electrode terminal, the third electrode terminal, and the power-supplied part are brought into a non-conductive state ,
The first electrode terminal and the second electrode terminal can be rotated and stored at the bottom of the battery housing chamber, and the spring member protruding from the power-supplied portion into the battery housing chamber and the rotating electrode An electronic apparatus in which the first electrode terminal and the second electrode terminal extending to the vicinity of the shaft are in contact with each other to supply power to the power-supplied part or the battery changeover switch . The electronic device according to claim 1 , wherein the battery switching switch is a switch that conducts when an input voltage is equal to or higher than a predetermined value. The electronic device according to claim 1, wherein the first type battery is a lithium secondary battery, and the second type battery is a dry battery.

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