JP4138191B2 - Battery storage device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery storage device provided with a conductive terminal that comes into contact with an electrode of a battery stored in the battery storage space with respect to a wall portion that forms the battery storage space.
[0002]
[Prior art]
As described above, there are technologies related to conductive terminals disclosed in Japanese Patent Laid-Open No. 6-20668 and Japanese Utility Model Laid-Open No. 4-46356. In these conventional technologies, members having spring properties are used for the conductive terminals. Thus, a structure is employed in which the conductive terminal is pressed against the battery electrode using a spring biasing force.
[0003]
[Problems to be solved by the invention]
Here, when considering the prior arts listed with publication numbers, each technique relates to a conductive terminal for a dry battery having an anode at one end and a cathode at the other end. A structure is adopted in which the anode of the battery is brought into contact with the conductive terminal made of the contact piece, and the cathode of the battery is brought into contact with the conductive terminal made of the compression type coil spring, and by sandwiching both electrodes of the dry battery by the urging force of the coil spring, It is possible to maintain a conductive state between the electrode of the dry battery and the conductive terminal. However, when the dry battery is not set, the distance between the end of the coil spring and the contact piece is shorter than the distance between both electrodes of the dry battery. For example, the dry battery is inserted from the direction perpendicular to the straight line connecting both conductive terminals. Even if the opening for inserting the battery is formed, the dry battery cannot be inserted along the direction perpendicular to the straight line connecting the two conductive terminals, and the dry battery is inserted in an oblique posture from the opening. The coil spring is sufficiently compressed on the cathode side of the battery, and in this state in which the compressed state is maintained, the operation of inserting the dry battery in the procedure of bringing the anode side of the dry battery into contact with the contact piece side has been troublesome. . In this conventional technique, when the battery is removed, the dry battery may be flipped up by the urging force of the coil spring.
[0004]
Further, in the latter of the conventional techniques, a negative terminal having a pressing terminal portion in which an anode of a dry battery is brought into contact with a plate-shaped positive terminal member and an urging force from a winding portion serving as a torsion spring acts. A structure in which the cathode of the dry battery is brought into contact with the member is employed, and the electrode of the dry battery and the conductive terminal can be maintained in a conductive state by an urging force as in the former case of the prior art. In particular, in this configuration, when the dry battery is inserted from the battery insertion opening, the pressing terminal is deformed in the bending direction, so that the coil spring is maintained in a compressed state as in the former technique of the prior art. Thus, the battery can be set by a simple operation without the trouble of inserting the batteries in the order of inserting the batteries.
[0005]
However, in this latter structure, since the conductive terminal is configured with a single pressing terminal portion extending from a single winding portion, the posture of the pressing terminal portion is unstable and the position of the pressing terminal portion is There are some aspects that are hard to decide. For this reason, when the dry battery is set, the pressing terminal part is displaced along the electrode surface of the dry battery, and the pressing terminal part may not be brought into contact with the electrode of the dry battery with an appropriate pressure. Further, in this latter structure, since the pressing terminal portion protrudes into the battery housing space when the battery is not set, there is an inconvenience that the dry battery is flipped up by the urging force from the winding portion when removing the dry battery. It has not been resolved. Therefore, it is conceivable to reduce the amount of protrusion of the pressing terminal portion into the battery storage space to eliminate the jumping up, but when the amount of protrusion is set to be small in this way, the initial posture of the pressing terminal portion and the dry battery It is also conceivable that the amount of displacement with respect to the posture at the time of setting is reduced, and the pressure contact force with respect to the electrode of the winding portion is insufficient, leading to poor conduction. Furthermore, in order to obtain a strong urging force with a small amount of displacement, it is conceivable to set the spring constant of the winding portion of the negative terminal member to a large value. However, if the spring constant is set to a large value, Even if the displacement is large, the urging force is greatly increased. When the battery is brought into contact with the pressing terminal during insertion, it feels hard and feels bad, and the frictional resistance when inserting the battery increases due to the large pressure contact force. There is room for improvement.
[0006]
An object of the present invention is to rationally configure a battery storage device that allows easy insertion of a battery and appropriately contacts a conductive terminal to the battery electrode with sufficient pressure when the battery is inserted.
[0007]
[Means for Solving the Problems]
According to a first aspect of the present invention (Claim 1), in a battery storage device provided with a conductive terminal in contact with an electrode of a battery stored in the battery storage space with respect to a wall portion forming the battery storage space, The conductive terminal is composed of a wire formed in a series with a contact portion that contacts the electrode of the battery, and a plurality of coiled portions that urge the contact portion in a swinging posture direction away from the wall portion , The conductive terminal is supported by a conductive support member, and the support member is provided on the resin wall , and the operation and effect thereof are as follows.
[0008]
A second feature of the present invention (Claim 2) is that, in Claim 1, the conductive terminal causes the swinging end portion of the contact portion to be locked to the locking portion on the wall portion side. It is in the point which is comprised so that the protrusion to the direction away from a wall part may be controlled, The effect | action and effect are as follows.
[0009]
According to a third feature of the present invention (Claim 3), in Claim 1 or 2, the conductive terminals are formed by connecting tip portions of the pair of contact portions extending from the pair of coil-shaped portions serving as coaxial cores. A single metal wire rod is formed to form a continuous shape, and the longitudinal direction of the contact portion is set to a posture along the battery insertion direction into the battery storage space. There are the following actions and effects.
[0011]
According to a fourth feature of the present invention (Claim 4 ), in any one of Claims 1 to 3 , the conductive terminal is provided on the wall portion for a cathode of a battery, and a wall surface facing the conductive terminal. On the other side, there are fixed type conductive terminals for the anode of the battery, and the battery is sandwiched between these conductive terminals. The operation and effect are as follows.
[0012]
[Action]
According to the first feature, the contact portion and the plurality of coil-shaped portions are formed in series in the conductive terminal, so that the spring constant can be set low by the coil-shaped portion even though the wire rod is a simple structure. Effectiveness can be utilized, and the posture of the contact portion can be stabilized as a form in which the contact portion is supported by a plurality of coil-shaped portions. In other words, when the battery is set, the contact portion flexibly swings toward the side closer to the wall portion to allow the battery to be inserted without hindering the movement of the battery. Therefore, the contact portion can be prevented from being displaced in an inappropriate direction and the contact portion can be brought into contact with an appropriate position of the battery electrode. In addition, since the conductive terminal is provided on the resin wall while being supported by the conductive support member, it is easier to install than the case where the conductive terminal is directly provided on the wall, and the position of the conductive terminal is also accurate. It can be set high.
[0013]
According to the second feature, the swinging end portion of the contact portion is locked to the locking portion on the wall portion side so as to suppress the protrusion in the direction away from the wall portion. It is possible to set the contact pressure with the electrode of the battery to be high while the structure does not greatly displace the contact portion, and further to the restoring direction of the contact portion when removing the battery. The disadvantage that the battery is flipped up by reducing the stroke is also suppressed.
[0014]
According to the third feature, since the pair of contact portions and the coil-shaped portion are formed of a single wire, the pair of base end positions of the wire are separated from each other and supported by the wall portion with a predetermined span. Not only can the terminal posture be stabilized, but also the electrical resistance of the conductive terminal can be halved compared to a case where only one contact portion and coil-like portion are formed. In addition, since the longitudinal direction of the contact portion is set to a posture along the battery insertion direction, the contact portion and the electrode of the battery can be smoothly connected without causing inconvenience such as deformation of the conductive terminal when the battery is inserted. In this configuration, the rocking end of the contact portion has a “U” shape or a “V” shape, so that it can be used as a locking portion provided on the wall side. One protrusion or a single pin can be used, and the structure can be further simplified.
[0016]
According to the fourth feature, since the battery is sandwiched between the conductive terminal using the wire and the fixed conductive terminal, not only the wire is not used for each terminal, but also the wire is used for each terminal. Compared with the case where it is used, the structure is simple and the number of parts is reduced.
[0017]
〔The invention's effect〕
Therefore, there is a battery storage device that has a light and good feeling when setting the battery, and after the setting, brings the conductive terminal into contact with the electrode of the battery at an appropriate position with a sufficient pressure contact force and exhibits a good conduction state. It was reasonably structured. In addition, it is possible to contact the battery electrode with a pressure that requires a conductive terminal while having a light feeling when setting the battery. It is easy to assemble the battery by setting the shape of the wire, stabilizing the attitude of the conductive terminal, improving durability, increasing the conducting current, and simplifying the structure. Thus, in the case of using a battery having electrodes at both ends, the structure can be further simplified and the number of parts can be reduced.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 5, a battery storage space S for storing two AA batteries B in a parallel posture (electrically connected in series) with respect to a resin-made device body 1 is formed. In addition, a battery housing portion is configured by including a detachable lid 2 that closes the opening of the battery housing space S. This battery storage unit is provided in a small radio, a small playback device that plays back audio stored in a cassette-type recording tape or MO, or an electrical device such as a small game device equipped with a liquid crystal display. The battery storage space S is formed by integrally molding a vertical wall portion 1W disposed at an opposing position and a side wall portion 1S formed at a position sandwiched between the vertical wall portions 1W with a lid portion. 2 is also formed by molding a resin of the same material as that of the device main body 1 and includes a conductive terminal C in a form in which the dry battery B is sandwiched between the vertical wall portions 1W. The lid 2 is engaged with a pair of engagement pieces 2A and 2A that are engaged with a pair of engagement holes 1A and 1A formed at the opening edge of the device main body 1, and a lock portion 1B formed at the opening edge. And a lock piece 2B to be held.
[0019]
The conductive terminal C includes two types having different structures: an anode conductive terminal Cp that contacts the anode 3 (+ electrode) of the dry battery B and a cathode conductive terminal Cn that contacts the cathode 4 (−electrode) of the dry battery B. It has been. Also, since the two dry batteries B, B stored in the battery storage space S are electrically connected in series, the substrate 5 and the solder are attached so as to conduct to the anode side of an electric device (not shown) inside the device. The anode terminal Cp is formed on the metal first plate P1 as the support member having the terminal 6 connected by the above, and the anode 3 and the cathode 4 of the two dry batteries B and B are electrically connected. An anode conductive terminal Cp and a cathode conductive terminal Cn are formed on a metal second plate P2 as a member, and are connected to the substrate 5 by soldering so as to conduct to the cathode side of an electric device (not shown) inside the apparatus. The cathode conductive terminal Cn is formed on the third plate P3 as a support member having the terminal 6 to be provided.
[0020]
That is, the anode conductive terminal Cp has a simple shape that protrudes into the battery housing space by pressing the first plate P1 or the second plate P2. Further, as shown in FIGS. 4, 5, and 7, the cathode conductive terminal Cn is a pair of coiled portions 7A having a coaxial core and a torsion spring function on the base end side of a single metal wire 7. , 7A is formed, the pair of coiled portions 7A, the contact portion 7B a portion extending from 7A for the cathode 4 of the battery B, formed as 7B, the contact portions 7B, 7B 'U the tip side each other In the state where the distal end portion 7C of the shape that is continuous in a letter shape is formed, the base end portions 7D and 7D of the wire rod 7 are separated from the second plate P2 or the third plate P3 (set span). The front end portion 7C is supported by a locking portion 9 formed on the plates P2 and P3. Further, in a state where the dry battery B is not stored, the contact portions 7B and 7B are bent and formed in a shape projecting toward the battery storage space S, and the direction (opening) when the dry battery B is inserted from the opening of the battery storage space S. The posture is set such that the direction perpendicular to the imaginary plane to be covered and the longitudinal direction of the contact portions 7B and 7B are parallel to each other.
[0021]
An opening 10 into which the pair of coiled portions 7A and 7A can be fitted into the second plate P2 or the third plate P3 and a positioning piece 11 inserted between the pair of coiled portions 7A and 7A are formed. In addition, a pair of pinching pieces 12 formed by drilling a pair of adjacent long holes so as to pinch and fix the base end portions 7D and 7D of the wire 7 and the locking portion 9 are attached to the plate. The tip portion 7C is locked to the locking portion 9 in a state of being integrally formed and in which a biasing force is applied in a direction in which the contact portions 7B and 7B protrude (a state in which initial stress is applied).
[0022]
As shown in FIG. 1, FIG. 4, and FIG. 5, the first plate P1 and the third plate P3 are inserted into the side of the vertical wall portion 1W constituting the battery storage space S from the inside of the device (the lower side in the figure). A gap Gp having a width that allows insertion of the anode 3 of the dry battery B is formed on the side of the vertical wall portion 1W where the first plate P1 is supported, and the third plate P3 is supported. Is formed with a gap Gn having a width that allows the wire 7 constituting the cathode conductive terminal Cn to protrude, and the anode conductive terminal Cp formed on the first plate P1 is a surface of the vertical wall portion 1W on the side of the battery storage space S. By setting the protruding amount of the anode conductive terminal Cp so as to be set at a further retracted position, even when the dry battery B is set in the reverse direction, contact between the cathode 4 of the dry battery B and the anode conductive terminal Cp is avoided. Configured to prevent reverse voltage from acting And Aru.
[0023]
The second plate P2 is inserted and held on the side of the vertical wall portion 1W by being inserted from the opening side (the upper side in the figure) of the battery storage space S, and is formed on the second plate P2 in the same manner as described above. The dry battery B was set in the reverse direction by setting the protruding amount of the anode conductive terminal Cp so that the anode conductive terminal Cp was set at a position retracted from the surface of the vertical wall portion 1W on the battery storage space S side. Even in this case, the contact between the cathode 4 of the dry battery B and the anode conductive terminal Cp is avoided. Further, in the vertical wall portion 1W, the gap Gp having a width that allows the anode 3 of the dry battery B to be inserted into the portion where the anode conductive terminal Cp is disposed and the portion where the cathode conductive terminal Cn is disposed, as described above. A gap Gn having a width that allows the wire 7 constituting the cathode conductive terminal Cn to protrude is formed. As shown in FIG. 8, the second plate P <b> 2 has a hole-like portion of the wall portion 14 in which a retaining piece 13 that is elastically projected from the plate surface is formed adjacent to the vertical wall portion 1 </ b> W. To prevent the second plate P2 from falling off.
[0024]
Since such a structure is provided, when the dry battery B is set, the anode conductive terminal Cp, the cathode conductive terminal Cn, the anode 3 and the cathode 4 of the dry battery B are matched in polarity and simply pushed from the opening direction. By simply inserting, the cathode 4 of the dry battery B moves along the longitudinal direction of the contact portion 7B of the cathode conductive terminal Cn as shown in FIGS. 6 (a), 6 (b), and 6 (c), and smooth movement is achieved. Since the spring constant of the coiled portion 7A functioning as a torsion spring does not have to be set too large at the same time as it appears, the contact portion 7B can be operated with a light force without increasing the biasing force even when the contact portion 7B is greatly displaced. Thus, the battery B can be inserted easily and with a good feel. Further, when the set dry battery B is removed, the urging force from the cathode conductive terminal Cn acts on the dry battery B, but since the stroke at the time of restoration is small, there is no inconvenience of jumping off the dry battery B. In particular, in the state where the dry battery B is inserted, the urging force from the cathode conductive terminal Cn is exerted strongly, and the anode 3 and the cathode 4 are strongly sandwiched between the anode conductive terminal Cp, the cathode conductive terminal Cn, and the dry battery B, and a good conduction state is obtained. It will be something that can be released. Further, since the anode conductive terminal Cp is integrally formed on a metal plate, the structure is simple and easy to manufacture, and the cathode conductive terminal Cn can be manufactured relatively easily by forming a single metal wire 7. In addition, since the metal plate to which the cathode conductive terminal Cn is fixed is assembled in an operation mode in which the metal plate is slidably moved with respect to the vertical wall portion W1, manufacture is also easy.
[0025]
[Another embodiment]
The present invention can be applied to, for example, a structure for housing a single battery or three or more batteries in addition to the above embodiment, and two batteries are arranged in parallel both electrically and in terms of arrangement. As in the case of being used in the case of being used in a battery housing structure for setting a battery having a structure in which a pair of anodes are provided on one wall part and a pair of cathodes are provided on the other wall part facing each other. It is not a hindrance. Moreover, it is also possible to apply to rechargeable batteries other than dry batteries.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a battery storage device. FIG. 2 is a vertical side view of the battery storage device. FIG. 3 is a plan view showing arrangement of conductive terminals. FIG. 4 is a vertical cross section showing a second plate of the battery storage device. FIG. 5 is a longitudinal sectional view showing the first and third plates of the battery storage device. FIG. 6 is a view continuously showing the change in the posture of the cathode conductive terminal when the battery is inserted. FIG. 8 is a cross-sectional view showing the structure for preventing the second plate from dropping off.
1W Wall part 7 Wire 7A Coiled part 7B Contact part 7C Tip part 9 Locking part C Conductive terminal B Battery P1, P2, P3 Support member S Battery storage space

Claims (4)

A battery storage device comprising a conductive terminal in contact with an electrode of a battery stored in the battery storage space with respect to a wall portion forming the battery storage space,
The conductive terminal is composed of a wire formed in a series with a contact portion that contacts the electrode of the battery, and a plurality of coiled portions that urge the contact portion in a swinging posture direction away from the wall portion ,
The battery storage device in which the conductive terminal is supported by a conductive support member, and the support member is provided on the resin wall . The conductive terminal is configured to lock the swinging end portion of the contact portion to the locking portion on the wall portion side, and to regulate the protrusion of the contact portion in the direction away from the wall portion. Item 2. A battery storage device according to Item 1. The conductive terminal is formed by molding a single metal wire so that the tip ends of the pair of contact portions extending from the pair of coil-shaped portions serving as coaxial cores are connected to each other. The battery storage device according to claim 1, wherein the longitudinal direction of the contact portion is set to a posture along the battery insertion direction into the battery storage space. The conductive terminal is provided on the wall portion for the cathode of the battery, and a fixed conductive terminal for the battery anode is provided on the side of the wall facing the conductive terminal, and the battery is sandwiched between these conductive terminals. battery housing device according to any one of claims 1 to 3 which is configured to.

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