JP2006252825A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable electronic apparatus, such as a portable audio equipment, so made to avoid short-circuiting accidents even if it gets in contact with a positive side terminal plate fitted inside a battery lid covering an inlet part of a battery compartment in free opening and closing. <P>SOLUTION: A battery lid 18 of the battery compartment 16 containing secondary batteries 17 is constituted of a decoration cover 29 and a junction body of a battery lid main body, and the battery lid main body is fitted to a terminal plate 37 in free sliding movement so that a base end part of the terminal plate 37 is inserted into a slit 46 of an insulator 43 to be combined with it. When the battery lid 18 is turned to be opened in a state moved toward a tip side of the terminal plate 37, the insulator 43 gets intercalated between a decoration plate 19 and the terminal plate 37, whereby short circuiting due to the terminal plate 37 is prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electronic device using a battery as a driving source, and more particularly to an electronic device in which a battery is inserted into a battery housing portion of a casing and an entrance of the battery housing portion is covered with a battery lid so as to be opened and closed.

  Portable audio equipment, such as portable disc players, cannot be driven using a commercial power supply, so a battery compartment is provided in a part of the cabinet, and a secondary battery is inserted into the battery compartment. The secondary battery is driven by the output of the secondary battery. When the secondary battery is discharged, it can be used again by charging, and can be used repeatedly.

  In such a portable electronic device, the battery housing part is covered with a battery lid so that the inlet portion of the battery housing part can be freely opened and closed, and a terminal plate provided inside the battery lid is installed in the battery housing part. The output is taken out by contacting with the positive electrode.

  On the other hand, if the secondary battery is unexpectedly discharged, this player will not operate. In preparation for such a case, for example, an auxiliary battery case storing AA batteries is prepared, and the auxiliary battery case is coupled to a position different from the battery storage portion and is driven by the dry batteries in the auxiliary battery case. Like to do. In this case, the negative jack that contacts the negative electrode of the AA dry battery is grounded to the conductive portions of the chassis and the casing. Therefore, when the battery cover of the battery storage section for storing the secondary battery is opened and the battery cover is rotated largely, the positive terminal plate provided on the inner side of the battery cover is the conductive part of the housing. The positive electrode of the dry battery in the auxiliary battery case, the positive jack connected to the auxiliary battery case, the positive terminal of the power circuit, the positive terminal plate of the battery storage part of the secondary battery, and the housing Current flows in the order of the conductive portion, the negative jack, and the negative electrode of the dry battery in the auxiliary battery case, thereby causing an accident in which the dry battery in the auxiliary battery case is short-circuited.

  Thus, if the positive terminal plate inside the battery cover contacts the aluminum panel or decoration plate of the casing, the risk of short-circuiting the AA batteries in the auxiliary battery case when the battery cover of the secondary battery is opened or closed There is sex. Therefore, in particular, measures such as applying an insulating tape to the abutting portion of the positive terminal plate provided inside the battery cover to provide insulation are taken, but if the tape is peeled off, a short circuit accident occurs. Also, the insulating tape has a bad appearance. In addition, when the battery cover is slidably coupled to the positive terminal plate, the battery cover cannot be smoothly slid relative to the terminal plate. Furthermore, there is a possibility that the replacement of the secondary battery may be hindered by the insulating tape.

  Japanese Utility Model Laid-Open No. 6-26158 discloses a battery pack including a terminal member that electrically connects a battery housed in a cylindrical case and an external device, and the terminal member is covered with a terminal member cover made of an insulating material. Thus, even when the battery pack is taken out from the transparent case, a highly reliable battery pack has been proposed that does not cause a short circuit due to contact between the terminal member and the surrounding metal.

Although such a battery pack insulates a terminal member with an insulating material, it cannot be directly applied to a battery housing portion in which a battery lid is slidably combined with an electrode.
Japanese Utility Model Publication No. 6-26158 Japanese Patent Laid-Open No. 10-12206

  An object of the present invention is to provide an electronic device in which a short-circuit accident does not occur even when a positive terminal plate provided inside a battery lid that covers an inlet portion of a battery housing portion so as to be freely opened and closed contacts the housing. Is to provide.

  Another problem of the present invention is that a prevention circuit for preventing a short circuit in the case where the battery cover is greatly opened and the terminal plate is brought into contact with the housing is unnecessary, and the life of the battery is extended and the cost is reduced. It is to provide an advantageous electronic device.

  Still another object of the present invention is to provide an electronic device in which measures for preventing a short circuit of an auxiliary battery are taken without increasing the number of parts.

  Still another object of the present invention is to provide an electronic device which is excellent in quality and has improved safety.

  Still another object of the present invention is to provide an electronic device in which an insulation sheet is not applied to a plus-side terminal plate provided on the inside of the battery cover of the battery housing portion and insulation measures are taken. .

  Still another object of the present invention is to provide an electronic device in which a sliding operation of a battery lid is smoothly performed with respect to a positive terminal plate.

  Still another object of the present invention is to provide an electronic device in which the insertion and removal operations of the battery are prevented from being difficult by the positive terminal plate or the battery lid of the battery housing portion.

  The above-described problems and other problems of the present invention will be clarified by the technical idea of the present invention and the embodiments thereof described below.

The main invention of the present application is an electronic device in which a battery is inserted into a battery housing portion of a housing, and an entrance of the battery housing portion is covered with a battery lid so as to be freely opened and closed.
A terminal plate that contacts one of the electrodes of the battery is attached to the inside of the battery lid, and an insulator is attached to a portion that contacts the housing at least when the terminal plate is opened. It relates to electronic equipment.

  Here, the battery stored in the battery storage unit may be a secondary battery. The terminal plate may be a positive terminal plate that contacts the positive electrode of the battery. The terminal plate may be rotatably attached to the housing together with the insulator, and the battery lid may be slidably combined with the distal end side of the terminal plate. The insulator may be an insulating synthetic resin molded body, and may be combined with the terminal plate so that the base end portion of the terminal plate is received by the slit-like narrow portion at the tip. Further, at least a portion of the housing that contacts the terminal plate when the battery cover is opened may have conductivity. In addition, an auxiliary battery case containing a dry battery may be detachably attached to the outside of the casing, and the negative terminal of the auxiliary battery case may be in electrical contact with the conductive portion of the casing. Moreover, the part which the said terminal board contacts when the battery cover of the said housing is opened may be a decoration board of a metal panel. Moreover, the part which the said terminal board contacts when the battery cover of the said housing is opened may be a plated decorative board.

  In a portable electronic device, for example, when an auxiliary battery case containing AA batteries is attached as a countermeasure against discharge of a built-in secondary battery, the outer casing is provided with an aluminum panel or a plated decorative band. Sometimes, when the battery cover of the battery storage part on the cabinet side for storing the primary battery is opened and closed, the positive terminal plate provided inside the battery cover comes into contact with the decorative band, thereby the auxiliary battery. There is a risk that the AA battery in the case is short-circuited by the positive terminal of the battery cover of the secondary battery and the decorative band. Therefore, in order to prevent this short circuit accident by an electrical measure, a short circuit prevention circuit must be provided, which increases the cost. Moreover, the battery life is almost halved.

  In order to take measures according to the mechanical structure, it is necessary to attach a paste such as an insulating tape for preventing a short circuit to the terminal plate on the plus side inside the battery cover. However, there is a possibility that the insulating tape of the positive terminal board may be peeled off, and it is not safe as a countermeasure against a short circuit accident. In addition, the number of parts increases and the assembly cost increases. Therefore, in a preferred aspect of the present invention, a short terminal can be prevented without increasing the number of parts by adopting a structure in which a positive terminal plate inside the battery lid is inserted from both sides by an insulating insulator.

  According to the above aspect, it is not necessary to provide a short-circuit prevention circuit, which makes it possible to reduce costs. In addition, shortening of the battery life caused by providing the short circuit prevention circuit can be prevented. Further, it is possible to prevent short circuit without increasing the number of parts. Further, according to such an aspect, the quality of the electronic device is improved, and an effect on safety is produced.

  The main invention of the present application is an electronic device in which a battery is inserted into a battery housing portion of a casing and an entrance of the battery housing portion is covered with a battery lid so as to be freely opened and closed. A terminal plate that comes into contact with the electrode is attached, and an insulator is attached to a portion that comes into contact with the housing at least when the terminal plate is opened.

  Therefore, according to such an electronic device, when the battery cover that covers the entrance of the battery housing portion is opened, the insulator provided in the portion that contacts the housing at least when the terminal plate is opened includes the terminal plate and the housing. This makes it possible to prevent electrical contact between the terminal board and the housing. Therefore, when the auxiliary battery case that houses the dry battery is attached to another part of the casing, the accident that the dry battery in the auxiliary battery case is short-circuited via the positive terminal plate and the casing is avoided. it can.

  The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 shows a portable type disc player according to the present embodiment, and this disc player includes a housing 10 having a flat rectangular parallelepiped shape. The upper opening of the housing 10 is covered with the upper lid 11. A turntable 12 for rotationally driving the disk is disposed at a substantially central portion of the housing 10. On the other hand, a cartridge holder is provided in the upper lid 11. When a disc cartridge is inserted into the cartridge holder and the upper lid 11 is closed in this state, the disc in the cartridge is rotated on the turntable 12. Will be. A circuit board on which various electronic components are mounted is incorporated in the side of the turntable 12 and inside the housing 10. In FIG. 1, this circuit board is omitted.

  A battery housing 16 is provided along the side wall of the housing 10 on the side of the turntable 12 of the housing 10, and the rechargeable battery 2, usually called a gum battery, is provided in the battery housing 16. The secondary battery 17 is accommodated. An inlet portion of the battery housing portion 16 is covered with a battery lid 18 so as to be freely opened and closed. In addition, a substantially U-shape is formed so as to cover the front surface from both sides of the outer portion of the housing 10, and a decorative plate 19 made of a metal panel or a plated panel is attached.

  In addition, an auxiliary battery case 23 is detachably attached to a side portion of the housing 10 opposite to the side portion where the battery housing portion 16 is provided. The auxiliary battery case 23 can accommodate AA batteries, and a pair of plugs of the auxiliary battery case 23 can be connected to the plus side jack 25 on the side of the housing 10 while the dry batteries are stored. And the minus side jack 26 are connected. The dry battery in the auxiliary battery case 23 is for driving the disc player when the secondary battery 17 is discharged.

  Next, the structure of the battery cover 18 that covers the battery storage portion 16 of the secondary battery 17 so as to be freely opened and closed will be described. The battery cover 18 includes a decorative cover 29 shown in FIGS. The decorative cover 29 is formed of an ABS resin molded body, and includes a plurality of non-slip protrusions 30 on its outer surface. On the other hand, a pair of bosses 31 are provided inside the decorative cover 29, and a low boss 32 is provided at an intermediate position. The decorative cover 29 is coupled to the battery lid body 33 by these bosses 31 and 32.

  As shown in FIGS. 2 and 4, the battery lid body 33 is composed of an ABS resin molded body, and has a pair of engagement holes. The bosses 31 of the decorative cover 29 are received in these engagement holes 34 and the tip ends thereof. The part is crushed. A positioning hole 35 for receiving the positioning boss 32 of the decoration cover 29 is also provided. The battery lid body 33 has protrusions on both sides in the width direction, and has engaging grooves 36 so that the inner sides of the protrusions face each other.

  A terminal plate 37 made of, for example, a stainless steel plate is incorporated inside the battery lid main body 33. As shown in FIGS. 2 and 5, the terminal plate 37 has a terminal portion 38 attached to the base side of the elastically deformable deformed portion formed by punching at a substantially central portion thereof. A locking claw 39 punched in an L shape is formed on the distal end side. A pair of left and right bent pieces 40 are formed on the base side of the terminal plate 37, and pin insertion holes 41 are formed in these bent pieces 40.

  An insulator 43 is combined with the base end side of the terminal plate 37. As shown in FIGS. 2 and 6, the insulator 43 is a molded body of an engineering plastic resin such as polyoxymethylene, and a base end portion thereof is a boss 44, and a pin insertion hole is formed in the boss 44. 45 is formed. The insulator 43 and the terminal plate 37 are rotatably attached to the inlet portion of the battery housing portion 16 of the housing 10 by a hinge pin 42 (see FIG. 7) that is inserted through the pin insertion hole 45. The insulator 43 is provided with a slit 46 on the tip side thereof, and the terminal plate 37 is tightly held by the slit 46 so that the insulator 43 and the terminal plate 37 are combined with each other by the slit 46. It has become.

  Next, assembly of the decorative cover 29, the battery lid body 33, the terminal plate 37, and the insulator 43 according to such a configuration will be described with reference to FIGS. A battery lid main body 33 is assembled inside the decorative cover 29, and the bosses 31 and 32 are engaged with the engaging holes 34 and the positioning holes 35, respectively, and the tips of the bosses 31 are thermally welded to attach the decorative cover 29 to the battery cover. It is coupled to the outside of the main body 33. On the other hand, the terminal plate 37 has a proximal end portion inserted into the slit 46 of the insulator 43. At this time, the pin insertion hole 41 of the bent piece 40 of the terminal plate 37 and the pin insertion hole 45 of the boss 44 of the insulator 43 are aligned with each other. Then, the terminal plate 37 and the insulator 43 that are coupled to each other are attached to the side portion of the inlet portion of the battery housing portion 16 of the housing 10 so that the pin insertion holes 41 and 45 can be rotated by the hinge pins 42.

  Thereafter, the battery lid body 33 to which the decorative cover 29 is coupled is combined with the terminal plate 37. In this combination operation, both sides of the terminal plate 37 are received in the engagement grooves 36 of the battery lid body 33. At this time, the engaging claw 39 gets over the protrusion 48 on the inner side of the battery lid body 33, so that the battery lid body 33 is slidably coupled to the terminal plate 37. The sliding stroke of the battery lid main body 33 with respect to the terminal plate 37 is indicated by S in FIGS. 4A and 4C. The battery lid main body 33 receives the terminal plate 37 at the maximum stroke, and the tip of the locking claw 39. Is a stroke between the position where the protrusion 48 abuts the protrusion 48.

  Next, the opening / closing operation | movement of the battery cover 18 of the battery accommodating part 16 which concerns on the above structures is demonstrated using FIG. 7 and FIG. In a state where the secondary battery 17 is correctly inserted into the battery housing portion 16 and the inlet portion of the battery housing portion 16 is closed by the battery lid 18, as shown in FIG. The claw 20 is engaged with the lock hole 21 on the inlet side of the battery storage portion 16 of the housing 10. At this time, the positive electrode of the secondary battery 17 in the battery housing portion 16 is in contact with the terminal portion 38 of the terminal plate 37.

  Here, as the secondary battery 17, for example, a rechargeable nickel-metal hydride battery is used, and the outer shape of the secondary battery 17 is almost a gum shape, so that the secondary battery 17 is called a gum battery. In addition, the outside of the secondary battery 17 is covered with a thin insulating film, and when a part of the film is broken, the negative electrode is exposed.

  Next, the battery replacement operation will be described with reference to FIG. In order to replace the battery, it is necessary to open the battery cover 18. Therefore, the decorative cover 29 and the battery cover main body 33 of the battery cover 18 are slid leftward with respect to the terminal board 37 in FIG. As described above, the battery lid main body 33 receives the terminal plate 37 slidably by the engaging grooves 36 on both sides thereof, and is slidable to a position where the locking claw 39 contacts the protrusion 48. . Therefore, when the battery lid body 33 is slid to the left in FIG. 7, the battery lid body 33 moves to the left with respect to the terminal plate 37, and the lock claw 20 is detached from the lock hole 21 on the housing 10 side. . Accordingly, in this state, the battery lid 18 is opened by rotating the battery lid 18 clockwise about the hinge pin 42 as shown in FIG.

  Therefore, in this state, it is possible to charge the secondary battery 17 by taking out the secondary battery 17 stored in the battery storage unit 16 and mounting the charged battery. If the charged secondary battery 17 is stored, the battery lid 18 is closed again, and the battery lid body is slid rightward with respect to the terminal plate 37 as shown in FIG. Locking is performed by the lock hole 21.

  Here, in particular, when the battery cover 18 is greatly opened, the insulator 43 provided on the base end side portion of the terminal plate 37 contacts the end portion of the decorative plate 19 of the housing 10. This means that the terminal plate 37 is prevented from directly contacting the decorative plate 19 of the housing 10. Therefore, a short circuit accident caused by the positive terminal board 29 of the secondary battery 17 coming into contact with the decorative board 19 is prevented.

  As shown in FIG. 1, when an auxiliary battery case 23 containing a dry battery is attached to the outside of the decorative plate 19, the positive and negative electrodes of the dry battery in the auxiliary battery case 23 are connected to the positive side jack 25 and the negative side, respectively. It is connected to the side jack 26. Moreover, the minus side jack 26 is connected to the decorative plate 19 and the chassis and grounded. Accordingly, when the terminal plate 37 and the decorative plate 19 come into contact with each other, the positive electrode of the dry battery in the auxiliary battery case 23 passes through the positive side jack 25, the positive side terminal of the power circuit, the terminal plate 37, the decorative plate 19, and the negative side jack 26. Are short-circuited. However, such a short-circuit accident is prevented by the insulator 43 in the portion on the base end side of the terminal board 37.

  As described above, in the present embodiment, the secondary battery 17 can be stored in the battery storage unit 16, and the auxiliary battery case 23 that holds the dry battery is attached to the outer side of the housing 10. Therefore, when the battery cover 18 is opened widely, the terminal plate 37 of the battery cover 18 comes into contact with a metal panel such as an aluminum panel, a magnesium panel, a steel plate panel, or a plated decorative panel 19, thereby causing the inside of the auxiliary battery case 23. Cause a short circuit accident. Therefore, in the present embodiment, the insulator 43 is attached so as to cover and cover the plus side terminal plate 37 inside the battery lid 18 from both sides. Since it interposes between 37 and the decorative board 19, the short circuit accident of the dry battery in the auxiliary battery case 23 is prevented.

  When the stroke of the lock by the lock claw 20 of the battery lid 18 is increased and the opening angle of the battery lid 18 is to be increased to 90 degrees or more as shown in FIG. 33 should be slid largely toward the tip side of the terminal board 38. However, if the terminal plate 37 is greatly slid, the terminal plate 37 is exposed to a greater extent, so that an accident due to the contact of the terminal plate 37 with the decorative plate 19 when the battery cover 18 is opened is likely to occur. Therefore, it is necessary to prevent such a short circuit accident. The insulator 43 can effectively prevent such an accident.

  Although the present invention has been described above with reference to the illustrated embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea of the present invention. For example, various design changes can be made with respect to the material, shape, dimensions, and the like of each component constituting the battery lid 18.

  The present invention can be used in a portable electronic device such as a portable disk player, particularly for a structure of a storage unit for a secondary battery.

1 is an exploded perspective view showing an overall configuration of a portable disc player. FIG. It is a disassembled perspective view of the battery cover which covers the entrance part of the battery accommodating part of the disc player. It is the top view, side view, and longitudinal cross-sectional view of the decoration cover of a battery cover. It is a bottom view, a side view, a longitudinal sectional view, and a plan view of the battery lid body of the battery lid. It is a top view, a side view, a longitudinal sectional view, and a front view of the plus side terminal plate inside the battery cover. It is a top view of a insulator combined with a terminal board, a transverse cross section, a side view, and a front view. It is a principal part longitudinal cross-sectional view of the battery accommodating part of the state which closed the battery cover. It is a principal part longitudinal cross-sectional view of a battery accommodating part when a battery cover is opened.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Housing | casing, 11 ... Top cover, 12 ... Turntable, 16 ... Battery storage part, 17 ... Secondary battery (gum battery), 18 ... Battery cover, 19 ... Decoration board, 20 ... Lock claw, 21 ... Lock hole, 23 ... Auxiliary battery case, 25 ... Positive side jack, 26 ... Negative side jack, 29 ... Decoration cover, 30 ... Anti-slip projection, 31, 32 ... Boss, 33 ... Battery lid body, 34 ... Engagement hole, 35 ... Positioning hole, 36 ... engaging groove, 37 ... terminal plate, 38 ... terminal portion, 39 ... locking claw, 40 ... bent piece, 41 ... pin insertion hole, 42 ... hinge pin, 43 ... insulator, 44 ... boss, 45 ... Pin insertion hole, 46 ... Slit, 48 ... Projection

Claims (9)

In an electronic device in which a battery is inserted into a battery storage part of a housing and an entrance of the battery storage part is covered with a battery lid so as to be freely opened and closed.
A terminal plate that contacts one of the electrodes of the battery is attached to the inside of the battery lid, and an insulator is attached to a portion that contacts the housing at least when the terminal plate is opened. Electronics.   The electronic device according to claim 1, wherein the battery stored in the battery storage unit is a secondary battery.   The electronic device according to claim 1, wherein the terminal plate is a positive terminal plate that contacts a positive electrode of the battery.   The electronic device according to claim 1, wherein the terminal plate is rotatably attached to the casing together with the insulator, and the battery lid is slidably combined with a distal end side of the terminal plate. .   5. The insulator is an insulative synthetic resin molded body, and is combined with the terminal plate so as to receive a base end portion of the terminal plate by a slit-like narrow portion at a front end. The electronic device as described in.   The electronic device according to claim 4, wherein at least a portion of the housing that contacts the terminal plate when the battery cover is opened has conductivity.   An auxiliary battery case containing a dry battery is detachably attached to the outside of the casing, and a negative terminal of the auxiliary battery case is in electrical contact with a conductive portion of the casing. The electronic device according to claim 6.   The electronic device according to claim 6, wherein a portion of the casing that contacts the terminal plate when the battery cover is opened is a decorative panel of a metal panel. The electronic device according to claim 6, wherein a portion of the housing that contacts the terminal plate when the battery cover is opened is a plated decorative plate.

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