JP4547914B2 - Battery storage device - Google Patents

Description

  The present invention relates to a battery storage device, and more particularly to a battery storage device used in a portable electronic device.

  In general, portable electronic devices cannot be driven using commercial power from the outside, so primary batteries such as AA batteries are stored in the cabinet, or secondary batteries are installed inside and outside the cabinet. The device is driven by the output of these batteries.

As a conventional portable electronic device, for example, there is a portable mini-disc recording / reproducing apparatus (hereinafter referred to as a mini-disc apparatus), and Patent Document 1 is an example of a mini-disc apparatus.
Hereinafter, the contents described in Patent Document 1 will be simply described with reference to FIGS. 6 and 7.

  In FIG. 6, a battery storage device 201 is disposed inside the minidisk device 200. The battery storage device 201 is large enough to store a thin battery 202, commonly called a gum battery, and is integrally formed of a non-conductive resin or the like, and is integrally formed with the plastic chassis 203. In addition, a battery insertion opening 204 for inserting and removing the thin battery 202 and an opening / closing lid 205 for opening and closing the battery insertion opening 204 are provided on one end side. The thin battery 202 is stored in the battery storage device 201 by inserting the negative electrode 206 into the battery insertion port 204 in the direction of arrow J in FIG.

  FIG. 7 is a perspective view showing an outline of the internal structure of the mini-disc device shown in FIG. It is formed. An opening / closing lid 205 having a hinge structure is provided on the battery insertion opening 204 side of the battery case 208, and the inside of the opening / closing lid 205 is electrically conductive to be in contact with the positive electrode 207 of the battery housed inside the battery case. The battery contact terminal 210 having the battery contact portion 209 is inserted so as to be slidable with respect to the opening / closing lid 205. Further, the battery contact portion formed by bending the open ends of the two tongue pieces provided on the battery contact terminal 211 in the insertion direction into the battery case 208 is penetrated on the negative battery contact side surface of the battery case 208. Terminal windows 212a and 212b are provided so that the battery contact terminal 211 is fitted to the negative battery contact side surface of the battery case 208 in the direction of arrow K as shown in FIG.

JP 2002-197776 A

As described above, various improvements have been made to the minidisc device for the purpose of miniaturization and weight reduction. However, the size of the holder that holds the standardized disc cartridge and the size of the chassis that supports the holder is as follows. It cannot be changed, and there is virtually no design freedom in the arrangement of the drive system such as the disk drive unit and the optical pickup unit of the apparatus main body, and there is a thing close to the limit of miniaturization, and Some weight reductions are close to the limit in terms of the strength of the device body.
However, portable electronic devices such as mini-disc devices are required to be smaller and lighter due to their convenience, and the battery storage space has been considered to be further reduced in size and weight.

  The shape of primary batteries and secondary batteries that have terminals at both ends that are currently used suppresses poor contact between battery electrode parts and battery contact terminals when shocks due to vibration or dropping are applied. For this reason, it is necessary to provide an appropriate elastic force from both sides or one side of the positive electrode and the negative electrode, and to always elastically press this against the electrode portion of the battery. For this reason, in the mini-disc device, the battery contact terminal is formed by a leaf spring, and a method of giving the elastic force in the minimum necessary space, such as giving an appropriate elastic force, is adopted. Some were difficult to convert.

  The present invention has been made in view of the above-described problems, and provides a battery storage device that can be further reduced in size and weight by changing the shape of the battery.

  The battery storage device of the present invention is a battery storage device that stores a rectangular battery in which a positive electrode and a negative electrode are provided at one end with a predetermined gap on the bottom surface side. A terminal block provided with a coil spring at one end with a predetermined interval on the side surface; and a battery case that engages with the terminal block. When storing the rectangular battery, the rectangular battery is placed on the terminal block. The positive electrode and the positive electrode side terminal portion, the negative electrode and the negative electrode side terminal portion are attached to each other, and when the rectangular battery is taken out, the coil spring is moved in the direction opposite to the insertion direction. The moving battery is energized to remove the rectangular battery.

In addition, the positive electrode side terminal portion and the negative electrode side terminal portion are lifted in the insertion direction of the rectangular battery, and the tips of the positive electrode side terminal portion and the negative electrode side terminal portion are formed in a convex shape. Forming.
Furthermore, the positive electrode side terminal portion is formed at substantially the center in the short direction of the terminal block, the negative electrode side terminal portion and the coil spring are formed on the left and right sides of the positive electrode side terminal portion, and the positive electrode is the rectangular battery. The negative electrode is formed on the side in contact with the negative terminal portion.
The terminal block is mounted on a circuit board of a portable electronic device.

According to the battery storage device of the present invention, the terminal block is provided, and the positive electrode terminal and the negative electrode terminal are provided on the one end portion of one side face with a predetermined gap therebetween, and further provided on both end surfaces in the longitudinal direction of the battery. The conventional positive electrode and negative electrode have a structure in which both electrodes are provided at one end on the bottom surface side of the rectangular battery with a predetermined interval. In addition, since the crimping from both ends of the battery is eliminated, the size can be reduced, and since the member used for the crimping is eliminated, the weight can be reduced.
Further, by providing the terminal block and attaching the electrode terminal to the terminal block, the instability of the force due to the direct attachment of the electrode terminal to the substrate can be eliminated.

  Furthermore, since the electrode terminal provided on the terminal block has a shape that rises in the battery insertion direction, it can prevent the electrode terminal from being deformed when the battery is inserted, and ensures that the electrode and the electrode terminal are in contact with each other. It is said. In addition, the tip of the electrode terminal forms a convex portion bent in a U-shape, and the electrode portion of the battery is formed at a slightly recessed position, so that the battery is slid on the terminal block. By moving, the contact is made so that the convex portion and the concave portion are engaged with each other, so that contact failure between the electrode and the terminal due to vibration or shock can be prevented, and further reduction in thickness and size can be achieved.

  In addition, even if the battery is inserted upside down, the tip of the electrode terminal in the shape of the convex part hits the corner of the battery without the concave part, so the battery cannot be fully inserted into the battery storage device. Preventive effect is obtained. That is, since the contact between the electrode and the terminal does not occur, it is not necessary to provide a protection circuit for preventing circuit damage due to application of a reverse voltage, and it is possible to manufacture at a very low cost.

  In addition, unlike the conventional battery, the positive electrode terminal and the negative electrode terminal are provided at one end of the side surface with a predetermined interval, so that the positive electrode terminal and the negative electrode terminal can be configured close to each other, making it easy to route the pattern on the substrate. become. Further, in the conventional battery case, the substrate is cut out to provide a space, and the battery storage portion is provided in the space. However, the substrate is cut out by adopting a structure in which the terminal block is provided and placed on the substrate. This eliminates the necessity, increases the effective substrate area, and makes it possible to construct a new circuit.

Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings.
FIG. 1 is an external view of a mini disk device in a closed state according to an embodiment of the present invention. The mini disk device 100 includes a main body case 101 and a cover body 103. An opening / closing knob 106 for opening and closing the main body case 101 and the cover body 103, a recording knob 108 for performing a recording operation on the mini disk, a hold switch 107 for invalidating various buttons and knob operations, and an opening / closing lid 109 for the battery compartment. A display window 104 and various operation buttons 105 are arranged on the surface portion 102 of the cover body 103.

FIG. 2 is a diagram showing the circuit board of the embodiment shown in FIG.
In FIG. 2, the terminal block 2 is placed on the top surface side of the main board 1 along the corners of the main board 1. On the terminal block 2, a positive terminal 4 and a negative terminal 5 are provided in parallel at a predetermined interval from the substantially center to the end of the terminal block 2 in the longitudinal direction. The positive electrode terminal 4 is provided substantially at the center in the short direction, the negative electrode terminal 5 is provided near the inside of the main substrate 1 with a predetermined interval, the positive electrode terminal 4 is the central axis, and the negative electrode A coil spring 9 is installed at a position facing the terminal 5 (near the outside of the main board 1). The coil spring 9 is used to urge the battery 6 in a direction opposite to the insertion direction when the inserted battery 6 is taken out.

  The battery case 3 engages with the terminal block 2 in the direction of arrow A from the upper part of the terminal block 2 to form a battery housing device 10 having a substantially rectangular parallelepiped shape with one surface open. The battery 6 is inserted into the battery storage device 10 along the direction of arrow B.

  The shape of the battery 6 will be described with reference to FIG. 3A shows a perspective view seen from the front side of the battery 6, and FIG. 3B shows a perspective view seen from the back side. The battery used in this embodiment is a thin lithium (Li) ion battery, which is a secondary battery. However, if the battery can apply a necessary voltage, the battery is thin. Any battery such as a secondary battery such as a nickel cadmium (Ni—Cd) battery or a nickel metal hydride (Ni—MH) battery, or a primary battery formed in a shape to be used this time may be used.

  The battery 6 according to the embodiment of the present invention has a thin and wide rectangular parallelepiped shape with a thickness H of about 3.5 mm, a vertical length L of about 23 mm, and a horizontal length W of about 63 mm. The vertical length L is about 7 mm longer than the thin battery, but the horizontal length W is about 3 mm shorter and the thickness H is about 2 mm thinner, making it easier to incorporate into the circuit board and further reducing the main body case. It has a possible shape.

  In the battery 6, a positive electrode 7a is provided in a substantially central portion on the side surface 6c side, and a negative electrode 8a is provided in a concave shape so as to be parallel to the side surface 6a with a predetermined interval, and the concave positive electrode 7a and the negative electrode 8a are continuously provided. It is folded back to the lower surface side 6f to form a concave positive electrode 7b and a negative electrode 8b having a predetermined length. For this reason, when the battery 6 is slid with the side surface 6c facing the terminal block 2, the positive electrode terminal 4 and the positive electrode 7, and the negative electrode terminal 5 and the negative electrode 8 can come into contact with each other so as to be fitted. .

  In addition, when the electrodes are placed with a uniform width with respect to the side surface 6c, for example, when the battery 6 is inserted upside down, the side surface 6c has a configuration in which both electrodes are moved to the side surface 6a side and the side surface 6d side is opened. The potential contact between the electrode and the terminal can be eliminated, and the influence of applying positive and negative voltages to the electric circuit can be completely prevented. In addition, when the coil spring 9 described above is brought into contact with the empty space on the side surface 6c, the urging force of the moving force in the direction opposite to the insertion direction when the battery 6 is taken out can be given.

The storage method of the battery 6 is demonstrated using FIG. 4A is a view of the main substrate 1 viewed from above, and FIG. 4B is a cross-sectional view of FIG. 4A viewed from the CC direction.
The battery case 3 is engaged with the terminal block 2 to form the battery storage device 10. Then, the battery 6 is slid on the terminal block 2 with the electrode surface of the battery 6 facing the insertion direction from the direction of the arrow E, and the positive electrode 7 and the negative electrode 8 are attached to the positive electrode terminal 4 and the negative electrode terminal 5. At this time, as shown in FIG. 4 (b), the positive electrode terminal 4 is in a state of floating in the insertion direction of the battery 6, and has a leaf spring shape having a force to repel upward when restrained downward. Therefore, the positive electrode terminal 4 and the positive electrode 7 can be securely attached.

Further, the connection portion between the electrode terminal and the battery will be described in more detail with reference to FIG. 5 in which a portion surrounded by a wavy circle D in FIG. 4B is enlarged.
The positive electrode terminal 4 has a shape that floats in the insertion direction of the battery 6, and the tip of the positive electrode terminal 4 forms a convex portion that is bent in a U shape. When the battery 6 is completely stored in the battery storage device 10, the positive electrode terminal 4 moves to the position 4 ', and the convex portion of the positive electrode terminal 4' becomes the terminal block 2. It will be in the state which protrudes from the bottom face. That is, when the battery 6 slides inside the battery storage device 10, the positive electrode terminal 4 moves to 4 ', and the concave electrode 7 of the battery 6 and the convex portion of the positive electrode terminal 4' are fitted. It is configured to be attached to. For this reason, even if the battery 6 is inserted upside down, since the battery 6 has a shape in which only the electrode portion is recessed, the convex portion provided at the tip of the positive electrode terminal 4 becomes a wall, and the insertion path of the battery 6 is Therefore, the battery 6 cannot be stored in the battery storage device 10. In other words, since this configuration serves as a protection circuit for preventing reverse current, damage to the circuit can be eliminated.
Although not shown, the negative electrode terminal 5 has the same shape as the positive electrode 4 described above and operates in the same manner.

The battery 6 inserted into the battery storage device 10 is stored in the battery storage device 10 by closing the opening / closing lid 109.
Further, when the battery 6 is stored in the battery storage device 10, when the opening / closing lid 109 is opened, the battery 6 is moved out of the battery storage device 10 by the biasing force in the direction opposite to the insertion direction by the coil spring 9. Can be extruded and removed.

  As described above, since the present invention is configured using the terminal block, the instability of the force due to the direct attachment of the battery terminal to the substrate, and the effective area of the substrate by drilling a hole in the substrate. Has the effect of suppressing the decrease. In addition, by providing the terminal and the electrode on one side surface, an effect of reducing the thickness of the battery and eliminating the contact failure due to vibration and the like can be obtained. There is also an effect of removing dust and the like, and it is possible to always connect with a low contact resistance.

  As an embodiment of the present invention, a mini-disc device has been exemplified. However, the portable device is not limited to a portable phone, a portable personal computer, a digital camera, etc. It can also be applied to any electronic equipment that uses a power source. Furthermore, it goes without saying that the present invention can be developed in various forms without being limited to the embodiments described above.

1 is an external view showing a minidisk device in an embodiment of the present invention. It is a perspective view which shows the circuit board, battery case, and battery in embodiment of this invention. (A) It is a front side perspective view of the battery in an embodiment. (B) It is a back side perspective view of the battery in an embodiment. (A) It is a top view which shows the circuit board, battery case, and battery in embodiment. (B) It is sectional drawing which shows the circuit board, battery case, and battery in embodiment. It is an enlarged view of the electrode terminal part in embodiment. FIG. 6 is an external view of a battery storage device shown in Patent Document 1. It is a detailed external view of the battery contact terminal used for the battery storage apparatus shown in Patent Document 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main board | substrate, 2 terminal block, 3 battery case, 4 positive electrode terminal, 5 negative electrode terminal, 6 battery 7 positive electrode, 8 negative electrode, 9 coil spring, 10 battery storage apparatus 100 portable minidisc recording / reproducing apparatus, 101 main body case, 102 Surface part, 103 Cover body, 104 Display window, 105 Operation button, 106 Open / close knob, 107 Hold switch, 108 Record knob, 109 Open / close lid

Claims (1)

In the battery housing device comprising a positive electrode and the negative electrode accommodating a rectangular battery provided together on one end of the bottom side of the recess closer to one side surface of a predetermined interval,
In the state where the rectangular battery is housed in the battery housing device, a positive electrode terminal that forms a convex shape that is attached to the positive electrode provided in the concave portion ,
In the state where the rectangular battery is housed in the battery housing device, a negative electrode terminal forming a convex shape that is attached to the negative electrode provided in the concave portion ,
A circuit board of a portable electronic device to which the positive terminal and the negative terminal are fixed;
A terminal block mounted on the circuit board;
A coil spring provided on an end surface of the terminal block opposite to the side where the positive electrode terminal and the negative electrode terminal are provided side by side, and biasing a moving force in a direction opposite to the insertion direction with respect to the rectangular battery;
Covering the rectangular battery engaged with the terminal block, and a battery case open one surface,
When housing the rectangular batteries, sliding the said rectangular battery on the terminal block, dissipate Chakuse' to engage the said positive electrode positive terminal and the negative electrode and the negative electrode terminal, the rectangular battery when taking out, the pulled out the rectangular battery biases the moving force in the insertion direction opposite to the direction by the coil spring, the battery housing device.

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