JPH08203496A - Interterminal short circuit preventing structure - Google Patents

Abstract

PURPOSE: To prevent interterminal short circuit. CONSTITUTION: A pair of connecting terminal parts 27, 26 to be connected to a pair of power source terminals of a video camera are installed in a battery pack 11. Connecting terminals in which part of each of conductive members 50, 54 is formed in a circular arc are projected from facing wall surfaces in a recess opened over a tip surface 50 and a fixing surface 16 in the connecting terminal parts 26, 27. Projecting contacts 52a, 56a are formed in the connecting terminals, and insulating layers 51, 55 are formed so as to expose only the contacts 52a, 56a. Since the exposed area of the conductive member is decreased, other metal such as a necklace is difficult to come in contact with the conductive member, therefore, interterminal short circuit is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing a short circuit between terminals of a power supply unit mounted on an electronic device such as a video camera, and more specifically, a power supply unit such as a coupler of a battery pack or a power supply adapter connected to the electronic device. The present invention relates to a short circuit prevention structure between terminals.

[0002]

2. Description of the Related Art In an electronic device such as a portable video camera (hereinafter referred to as a video camera) which can be carried and used, power is supplied by mounting a battery pack containing a battery. By making the battery pack detachable, the video camera can be downsized and the battery can be replaced. Therefore, when the battery is exhausted and it becomes impossible to shoot, it is convenient to continue shooting by replacing the installed battery pack with another battery pack prepared in advance. is there. Battery packs are available not only as a type in which a storage battery (secondary battery) that can be repeatedly charged by a charger is used, but also as a type in which a dry battery (primary battery) is loaded and used. For the sake of simplicity, the storage battery and the dry battery are generically called a battery. By using a coupler of a power supply adapter instead of the battery pack, power can be supplied to the video camera from a household power supply, a car battery, or the like.

Various types of battery packs are prepared for each manufacturer and each electronic device used.
Most of them have a pair of connection terminals for power supply exposed to the outside of the case body of the battery pack so that they can be easily connected to the power supply terminals of the electronic device. By the way, the battery pack may be stored in a camera bag, a handbag, or the like as a single unit when it is carried for replacement.
As described above, when the battery pack is a single body, other metal, for example, a key chain, a necklace, or scissors, comes into contact with the pair of connection terminals exposed on the outside of the case body to cause a short circuit, and the battery in the battery pack is damaged. There is a fear.

In order to prevent such a problem, there is a battery pack in which two recessed portions are provided on the wall surface, and a pair of flat plate connection terminals are respectively provided in these recessed portions. According to this, even when a plate-shaped conductor such as scissors comes into contact with the wall surface, it does not come into contact with both the connection terminals at the same time, and a short circuit is not caused between the connection terminals. It is also known that the peripheral wall surrounding the one end surface of the battery pack case is extended in an eaves shape, and the connection terminal is arranged on the inner surface of the extended peripheral wall to prevent metal from contacting or short-circuiting the connection terminal. (Battery pack described in Japanese Utility Model Publication No. 1-45083).

[0005]

By the way, in the battery pack in which the connection terminal is provided in the recess as described above, in the case of a freely bendable chain-shaped necklace or an undulating metal, a part of the metal is formed in the recess. There is a problem that it gets in and contacts the pair of connection terminals at the same time to cause a short circuit, thereby damaging the battery. In the battery pack described in Japanese Utility Model Publication No. 1-45083, it is necessary to extend the peripheral wall from one end surface, and the battery pack becomes large accordingly.
There is a problem that the battery pack cannot be downsized.

There is also known a battery pack in which the connection terminal is not exposed to the outside when the battery pack is in a single state and a short circuit is prevented. For example, in Japanese Utility Model Publication No. 4-526, a connection terminal portion is provided with an openable / closable cover, and when the battery pack is attached to an electronic device, the cover is opened by a cover opening member on the electronic device side to expose the connection to the outside. Connect the terminal to the power supply terminal on the electronic device side. Then, when the battery pack is removed from the electronic device, the cover is closed so that the connection terminals of the battery pack are covered to prevent a short circuit between the terminals. However, in such a battery pack, a cover member for the connection terminal and an opening / closing mechanism for the cover member are required, which increases the cost of the battery pack, and the cover member and the opening / closing mechanism are provided in the case of the battery pack. This is not suitable for battery packs that require a space to be built in and require miniaturization while increasing battery capacity.

The present invention has been made to solve the above problems, and is a space-saving structure suitable for downsizing, and moreover, a short-circuit prevention structure between terminals for surely preventing a short-circuit between connection terminals due to contact with a metal product or the like. The purpose is to provide.

[0008]

In order to achieve the above object, in the invention of claim 1, a conductive member electrically connecting a connection terminal portion of a power supply unit to the power supply terminal by contacting the connection terminal portion, The insulating member is provided integrally with the conductive member and covers the conductive member so as to reduce the external exposed area of the conductive member. According to this, since the insulating member reduces the exposed area of the conductive member, it is difficult for the conductive member to come into contact with other metals.

According to the second aspect of the present invention, the connection terminal portion is electrically connected by contacting with the power source terminal and the concave portion opened across the tip surface on the mounting direction side and the wall surface adjacent to the tip surface. A protrusion that is formed such that at least this protrusion is inserted into the path of the power supply terminal, and is abutted and pressed by the power supply terminal that enters the recess during mounting, thereby forming a direction orthogonal to the mounting direction. A conductive member that is elastically deformed to an integral part, and an insulating member that is provided integrally with the conductive member and that covers the conductive member so as to project the convex portion and reduce the external exposed area of the conductive member. It is composed. According to this, since the convex portion projects more than the insulating member, the connection with the power supply terminal is ensured, and since the conductive member is in the concave portion, contact with other metal or the like is difficult.

According to the third aspect of the present invention, the connection terminal portion is provided with a concave portion which is opened across the tip end surface on the mounting direction side and a wall surface adjacent to the tip end surface, and which is provided in the concave portion and contacts the power supply terminal. And an insulating plate that is provided integrally with the conductive member and that closes the opening of the recess on the wall surface side adjacent to the tip end surface from the inside of the recess. is there. In the invention of claim 4,
The connection terminal portion is a recess formed so as to cut out the outer wall across the tip surface on the mounting direction side and the wall surface adjacent to the tip surface, and the power supply terminal surrounds the periphery of the recess from the tip surface side. An insulating plate forming a part of the outer wall of the power supply unit, which is provided so as to allow it to enter the recess,
And a conductive member that is provided in the recess surrounded by the insulating plate and is in electrical contact with the power supply terminal. According to these, since the conductive member is provided in the recess, it is difficult for other metal to enter the recess and contact the conductive member, and the conductive member is exposed to a portion other than the tip surface. It is possible to prevent it from coming into contact with other metals or the like.

According to a fifth aspect of the present invention, the connection terminal portion is provided with a recess having an opening at the tip end surface on the mounting direction side and extending along an axis parallel to the mounting direction. A conductive member having elasticity extending to a position immediately before the opening that is in contact with and electrically connected to the conductive member, and the conductive member is provided integrally with the conductive member near the opening and closes the opening when not mounted. And an insulative shielding member that is concealed from the outside and abuts against the power supply terminal that enters through the opening when mounted and elastically deforms the conductive member to move to a position that allows the power supply terminal to enter through the opening. It is composed of. According to this, the conductive member can be completely hidden from the outside when it is not mounted, and the shielding member is moved by elastic deformation of the conductive member connected to the power supply terminal. The space of the power supply unit can be effectively used.

[0012]

EXAMPLE A video camera is provided with a battery pack, a power adapter, an AC charger, and a DC charger for supplying power. In the present embodiment, the battery pack, the power adapter, etc. are referred to as a power supply unit, and the video camera, AC charger, DC charger, etc. are referred to as an electronic device, which is provided between the connection terminals for external connection provided in the power supply unit or this A short circuit is prevented between the conductive members on which the connection terminals are formed.

The battery pack 11 shown in FIG. 2 is a storage battery (secondary battery) 12 made of, for example, a lithium ion battery.
And a battery case 13 incorporating the same, and the battery case 13 is composed of an upper case 13a and a lower case 13b formed of an insulating material, for example, an insulating engineering plastic. A mounting surface 16 that can be mounted on the video camera 14, the AC charger 15, and the DC charger (not shown) is formed on the bottom of the lower case 13b. Video camera 1
A receiving surface 19 for mounting the battery pack 11 or the coupler 18 of the power adapter 17 is provided on the outside of the rear surface of the connector 4.

The AC charger 15 has a built-in primary circuit having a power transformer and a secondary circuit including a rectifier circuit and a charge control circuit. This AC charger 1
5 takes in household power (AC 100V) from the power plug 20 connected to the primary circuit, and supplies DC current from the charging control circuit to the battery pack 11 mounted via the receiving surface 21 provided on the upper surface. To charge. Also, AC
A connector receiver 22 connected to the rectifying circuit is provided outside the charger 15, and a DC voltage necessary for driving the video camera 14 is output from the connector receiver 22.

The DC charger has a power plug 2
It has a plug to be connected to a cigarette socket of a car instead of 0, transforms a DC voltage (12V, 24V) obtained from a car battery by a built-in DC transformer circuit, charges the battery pack 11, and has a connector. The receiver outputs a DC voltage required to drive the video camera 14, and the receiving surface and the connector receiver provided on the receiver are structurally and functionally the same as the AC charger 15. Is omitted.

The power adapter 17 is the AC charger 1
5 or the DC charger and the video camera 14 are used by being connected to each other. The connector 23 is connected to the connector receiver 22 and the coupler 18 is connected to the video camera 14. In this coupler 18,
A mounting surface 24 that can be mounted on the receiving surface 19 of the video camera 14 is formed. In addition, the battery pack 11,
The shapes of the mounting surface of the coupler 18 and the receiving surfaces of the video camera 14, the AC charger 15 and the DC charger are preferably such that the coupler 18 is not erroneously mounted on the receiving surfaces of the AC charger 15 and the DC charger.

As shown in FIG. 3, on the tip side of the mounting surface 16 of the battery pack 11 in the mounting direction (longitudinal direction),
A recess 25 is formed. A pair of connection terminal portions 26 and 27 are provided on the inner surfaces 25a and 25b of the recess 25 that face each other. The connection terminal portions 26 and 27 will be described later. Further, on the mounting surface 16, four concave grooves 30 to 33 are formed on both side surfaces 28 and 29 in the width direction, and an auxiliary groove 34 is further formed at the center of the rear end in the longitudinal direction.
The four recessed grooves 30 to 33 are substantially L-shaped.

As shown in FIG. 4, on the receiving surface 19 of the video camera 14, a mounting control wall 35 that surrounds the receiving surface 19 in a U-shape so that one side of the receiving surface 19 is open.
Is protruding. The size of the receiving surface 19 surrounded by the mounting restriction wall 35 is the same as or slightly larger than the size of the battery pack 11, restricts the movement of the battery pack 11 in the width direction, and slides in the longitudinal direction. Is allowed.

Inner surfaces 35a, 3 of the mounting regulation wall 35 facing each other
5b is provided with four convex portions 36 to 39. Each of the protrusions 36 to 39 is formed in an inverted L-shape so as to project, and engages with the four recessed grooves 30 to 33 of the battery pack 11, respectively, and in the longitudinal direction of the battery pack 11, an arrow B shown in FIG. The sliding movement in the direction (mounting direction) is restricted.

To mount the battery pack 11, the mounting surface 16 is pressed against the receiving surface 19 surrounded by the mounting restriction wall 35 at a position where the battery pack 11 is displaced in the longitudinal direction toward one open side of the receiving surface 19. (Arrow A), arrow B
Slide in the direction. This sliding movement is restricted when the four convex portions 36 to 39 are engaged with the four concave grooves 30 to 33. When removing, reverse operation is performed. Reference numeral 40 denotes an elastic auxiliary claw formed by cutting out a part of the receiving surface 19, and when the battery pack 11 is mounted at a predetermined position, the auxiliary groove 34 is provided.
Engage with. As a result, the movement of the battery pack 11 in the direction opposite to the arrow B direction is regulated, and the attached battery pack 11 is prevented from falling off.

A pair of power supply terminals 41, 4 extending in the opposite direction to the mounting direction is provided at the position of the mounting restriction wall 35 where the pair of connection terminal portions 26, 27 face each other when the battery pack 11 is mounted.
2 are provided. The power supply terminals 41 and 42 are substantially rectangular parallelepiped rods having high rigidity, are fixed to the mounting regulation wall 35, and are connected to the circuit inside the video camera 14. A cover member 43 having a substantially T-shaped cross section is provided between the pair of power supply terminals 41 and 42. This cover member 43 has power terminals 41, 4 in the gaps at the lower ends of both ends.
It is slidable along the mounting direction between the covering position for covering 2 and the exposing position for exposing the power supply terminals 41, 42 through the gaps at the lower ends of both ends.

As shown in FIG. 5, the cover member 43 is constantly urged toward the covering position by urging means 44 such as a coil spring or a leaf spring. The cover member 43 is brought into contact with and pressed against the tip surface of the battery case 13 of the battery pack 11 inserted in the direction of the arrow B, and slides from the covering position to the exposing position against the bias of the biasing means 44. To do. When the battery pack 11 is removed, the cover member 43 is biased by the biasing means 44 and slides to the covering position to cover the power supply terminals 41 and 42. This prevents corrosion and deformation of the power supply terminals 41, 42.

As shown in FIGS. 1, 5 and 6, the connection terminal portion 26 includes a conductive member 50 having elasticity and an insulating layer 5.
1 and 1. The conductive member 50 is formed with a connection terminal 52 whose one end is bent in an arc shape, and is incorporated in the lower case 13b so that the connection terminal 52 is exposed to the outside through an opening 53 formed in the inner surface 25a. Further, the connection terminal 52 is formed with two rows of protrusions (hereinafter referred to as contacts) 52a that slightly project toward the center of the battery pack 11 and extend in the mounting direction. The insulating layer 51 covers the surface of the insulating layer 51 that covers the exposed surface of the conductive member 50 so as to expose the two rows of contacts 52a. The insulating layer 51 is
An insulating plastic resin or the like is used, and the contact 52a
Only the exposed portion is formed by outsert molding, or the entire surface of the conductive member 50 including the contact 52a is coated with an insulating material, and then the contact 52a is formed.
It is formed by peeling off the insulating material coated on the part.

The other end of the conductive member 50 is connected to the electrode of the storage battery 12 inside the battery case 13. Since the connection terminal portion 27 has the same structure as the connection terminal portion 26, in FIG. 5, the conductive member, the insulating layer, the connection terminal, the contact, and the opening of the connection terminal portion 27 are denoted by reference numerals 54 and 5, respectively.
5, 56, 56a and 57, these reference numerals are shown in parentheses in FIGS. 1 and 6, and the description thereof will be omitted.

As shown in FIG. 7, power supply terminals 41, 42
When the battery pack 11 is mounted, enters into the recess 25, contacts the contacts 52a and 56a of the connection terminals 52 and 56, and is electrically connected. In order to ensure that the power supply terminals 41 and 42 are in contact with the contacts 52a and 56a,
The connection terminals 52, 56 are inserted into the paths of the power supply terminals 41, 42.
Is abutted and pressed against the power supply terminals 39, 40 and elastically deformed in the width direction, allowing the power supply terminals 41, 42 to enter.

As described above, since the conductive members 50 and 54 have a small exposed area outside the conductive portions due to the insulating layers 51 and 55, other metals such as necklaces come into contact with the conductive members 50 and 54 when they are carried. It is difficult to do. Further, the contacts 52a, 56a are slightly protruded from the insulating layers 51, 55, so that the electrical connection with the power supply terminals 41, 42 is surely performed.

As shown in FIG. 8, the mounting surface 24 of the coupler 18 is of the same size as the mounting surface 16 of the battery pack 11, and it can be mounted on the receiving surface 19 of the video camera 14 as well. A pair of connection terminal portions 60 and 61, concave grooves 62 to 65, and auxiliary groove 66, which are similar to those of 11, are provided.

Further, the receiving surface 21 of the AC charger 15
Is the receiving surface 19 of the video camera 14 as shown in FIG.
It has the same size as the battery pack 1
The mounting restriction wall 67, a pair of power supply terminals 68, 6 similar to the video camera 14 so that the mounting surface 16 of 1 can be mounted.
9, projections 70 to 73, auxiliary claw 74, and cover member 75 are provided.

Next, the operation of the above configuration will be described. When mounting the battery pack 11 on the video camera 14, as shown in FIG. 4, the mounting surface 16 is pressed against the receiving surface 19 surrounded by the mounting restriction wall 35 while being displaced in the longitudinal direction (arrow A). As a result, the auxiliary claw 40 is pushed by the mounting surface 16 and elastically deforms downward.

Next, the battery pack 11 is slid in the direction of arrow B. This sliding movement is restricted when the four convex portions 36 to 39 are engaged with the four concave grooves 30 to 33. By this slide movement operation of the battery pack 11, the cover member 43 is moved to the exposure position against the bias of the biasing means 44 together with the battery pack 11. The power supply terminals 41 and 42 enter the recess 25.

The connection terminals 52 and 56 projecting on the paths of the power supply terminals 41 and 42 in the recess 25 are formed by the power supply terminals 41 and 42.
Are abutted against and pressed by, respectively, and elastically deformed in the width direction.
Then, as shown in FIG. 7, the two power supply terminals 41 and 42 are sandwiched by the connection terminals 52 and 56. At this time, the contactor 5 slightly protruding from the insulating layers 51 and 55
2a and 56a contact the power supply terminals 41 and 42, the storage battery 12 of the battery pack 11 and the power supply terminals 41 and 42 are electrically connected, and power can be supplied from the storage battery 12 to the video camera 14. When the mounting is completed, the auxiliary claw 40 enters the auxiliary groove 34, and the battery pack 1
1 is prevented from sliding in the direction opposite to the arrow B direction to prevent the battery pack 11 from falling out of the mounted state.

When removing the battery pack 11, the battery pack 11 is slid in the direction opposite to the arrow B direction. At this time, since the auxiliary claw 40 is pushed down by the rear end edge of the auxiliary groove 34 in the moving direction, the auxiliary claw 40 is elastically deformed downward and the engagement is released. As a result, the battery pack 11 can be slid in the opposite direction to the arrow B direction. Next, the battery pack 11 is pulled out upward, and the video camera 1
Remove from 4. When the battery pack 11 is removed, the cover member 43 is moved to the covering position by the urging force of the urging means 44, so that the power supply terminals 41 and 42 of the video camera 14 are protected from contact with a finger or the like and short-circuited. Is prevented.

On the other hand, the conductive members 50 and 54 of the removed battery pack 11 return to the state shown in FIG. 5 by their elasticity. 50 and 54 of these conductive members are
The insulating layers 51 and 55 reduce the external exposed area of the electrically conductive portion, so that other metals such as necklaces and scissors are less likely to come into contact with them when carrying. Therefore,
A short circuit between the connection terminals is prevented. Also, each connection terminal 5
Since the terminals 2 and 56 are arranged in the recess 25, the connection terminals 52 and 56 are hardly touched when the battery pack 11 is held at the time of mounting or the like, so that oil or dust adheres to the terminals. No defects will occur.

When the coupler 18 of the power adapter 17 is attached to the video camera 14 and the battery pack 11 is attached to the AC charger 15, the attachment / detachment may be performed by the same procedure as described above. By the way, plug the power plug 20 into an outlet and plug the power adapter 17 into
When the connection terminal is short-circuited between the connection terminal portions 60 and 61 of the coupler 18 in the state of being connected to the C charger 15, AC
The internal circuit of the charger 15 is damaged. However, since the connection terminal portions 60 and 61 of the coupler 18 also have the same structure as the battery pack 11, there is almost no short circuit between the terminals like the battery pack. The power supply terminals 68 and 69 of the AC charger 15 are
Since it is covered with the cover member 75, a short circuit is unlikely to occur.

Next, the embodiment shown in FIG. 10 will be described. The same components as those in the above embodiment will be described with the same reference numerals. The battery pack 80 shown in FIG. 10 is provided with a pair of connection terminal portions 81 and 82. As shown in FIG. 11, the connection terminal portion 82 is composed of a recessed portion 84 that is open across the attachment surface 16 of the battery case 13 and the tip end surface in the mounting direction (longitudinal direction), and a connection terminal unit 86. . Furthermore, the connection terminal unit 86 is
It is composed of a conductive member 88 having elasticity and an insulating plate 90. The conductive member 88 is bent in a U shape,
Connection terminals 88a and 88b, which are bent in an arc shape so that both ends thereof project inward, and a bottom plate 88c, which extends in parallel with the mounting surface 16, are formed by bending.

On the surface of the bottom plate 88c opposite to the connection terminals 88a and 88b, an insulating plate 90 made of an insulating material such as an engineering plastic is integrally formed by insert molding or outsert molding. The insulating plate 90 may be formed by fixing a molded product of the insulating plate to the bottom plate 88c or coating an insulating material.

The conductive member 88 and the insulating plate 90 are provided in the recess 8
4, the connection terminals 88a and 88b are made to face each other through openings provided on both side walls of the recess 84 in the width direction, and the opening of the recess 84 on the side of the mounting surface 16 is connected to the insulating plate 90. It is fixed to the lower case 13b of the battery case so that the part is exposed. Therefore, the connection terminals 88a, 88b and the bottom plate 88c are not exposed to the mounting surface 16 side by the insulating plate 90.

As shown in FIG. 12, the connection terminals 88a, 8a
The inner distance L1 of 8b is made narrower than the width L2 of the power supply terminal 42, so that the contact with the power supply terminal 42 can be reliably performed. The battery pack 80 is mounted by pressing the mounting surface 16 against the receiving surface 19 of the video camera 14 in the same manner as in the above embodiment, and then mounting the battery pack 80 in the mounting direction.
Slide to move. As a result, the power supply terminal 42 enters the recess 84 from the opening on the tip surface side of the recess 84, presses the connection terminals 88a and 88b, and elastically deforms in the width direction. As a result, the power supply terminal 42 is sandwiched between the connection terminals 88a and 88b and electrically connected, as shown in FIG. When removing the battery pack 80, the battery pack 80 is removed from the video camera by performing the procedure in the reverse order of the mounting procedure.
The state shown in FIG. Since the other connecting terminal portion 81 is also the same as the connecting terminal 82, reference numerals in parentheses are shown in FIGS.

According to this battery pack 80, the connection terminals 83a, 83b, 84a, 84b are arranged in the recesses 83, 84, and the insulating plates 89, 90 attached to the bottom plates 87c, 88c are arranged in the recesses 83, 84. Connection terminal 8
Since 3a, 83b, 84a, 84b are not exposed to the mounting surface 16 side, other metals such as scissors and necklaces are connected terminals 83a, 83b, 84a, 84.
Hard to contact b. Therefore, a short circuit between the connection terminals is prevented.

For example, a foldable chain-shaped metal necklace rarely enters the two recesses 83 and 84 at the same time, and even if such a necklace is placed on the mounting surface 16, the insulating plate 89 is used. , 90 does not come into contact with the bottom plates 87c, 88c having conductivity, and of course the connection terminals 83a, 83b, 84a, 84.
Since there is no contact with b, a short circuit is prevented.

Although the insulating plate is exposed at the opening portion on the side of the mounting surface 16, as shown in FIG. 14 showing one of the connecting terminal portions 91, the connecting terminal unit 92 includes the battery case 13 (lower case). The outer wall 93 forming a part of the outer shell of 13b) may be integrally formed. This outer wall 93
Is composed of a peripheral wall 94c having an L-shaped cross section formed by bending the conductive member 94 together with the connection terminals 94a, 94b, and an insulating wall 95 formed on the outer surface of the peripheral wall 94c by insert molding or outsert molding. ing. Even in this case, a similar short circuit prevention effect can be obtained. Of course, the side wall may be provided also on the front end face side by leaving the opening into which the power supply terminal enters.
Further, the power supply terminal side may be made to have elasticity so that the power supply terminal and the conductive bottom plate or peripheral wall are in contact with each other.

Next, the battery pack shown in FIG. 15 will be described. The same parts as those in the first embodiment will be described with the same reference numerals. A pair of connection terminal portions 101 and 102 are provided on the front end surface of the battery pack 100. The connection terminal portion 102 has an opening 104 formed in the front end surface of the lower case 13b, as shown in the cross section of the main part in FIG.
And a pair of elastic conductive members 121 and 122,
Each of the conductive members 121 and 122 includes shield members 123 and 124 provided at one end thereof.

The conductive members 121 and 122 are provided with connecting terminals 125 and 126 whose central portions are bent in an arc shape, and shield members 123 and 124 made of an insulating plastic resin are adhered or welded or welded at one end. They are integrally formed by outsert molding. The other ends of the conductive members 121 and 122 are fixed to the lower case 13b such that the protruding portions of the connection terminals 125 and 126 face each other. The shielding members 123 and 124 are provided so as to close the opening 104 from both sides in the width direction inside the opening 104 when the battery pack 100 is in a single state (when not mounted).
The portion exposed to the opening 110 is formed into an inclined surface that descends toward the back of the opening 110 in order to transmit the pressing force of the power supply terminal 42 at the time of mounting to one end of the conductive members 111 and 112 in the width direction. ing. The other connection terminal portion 1
Since 01 is also the same, only the reference numerals with parentheses are shown and the description is omitted.

The operation of the battery pack 100 will be described. The battery pack 100 presses the mounting surface 16 against the receiving surface 19 as in the above-described embodiments, and then slides in the mounting direction. By this slide operation, the power supply terminals 41 and 42 enter the openings 103 and 104. At this time, in the connection terminal portion 101, the power supply terminal 41 contacts the slopes of the shielding members 113 and 114 and presses them. By pressing the inclined surface of the shielding member in the mounting direction, one end of each of the conductive members 111 and 112 is elastically deformed in the width direction and spreads. As a result, as shown in FIG. 17A, the shielding members 113 and 114 move in the width direction so as to allow the power supply terminals 41 to enter the openings 103 and 104.

Similarly, in the connection terminal portion 102, the power supply terminal 42 presses the slopes of the shield members 123 and 124, whereby one ends of the conductive members 121 and 122 are elastically deformed and spread in the width direction, respectively. Shield member 123, 12
4 moves the power supply terminal 42 in the width direction so as to allow the power supply terminal 42 to enter the opening.

Further, the power supply terminals 41 and 42 have openings 10
When it goes into the inner part of 3, 104, the connection terminals 115, 116 bent in an arc shape become the power supply terminal 41 and the connection terminal 1
25 and 126 contact the power supply terminal 42 and are pressed. Therefore, each conductive member 111, 111, 121, 122
Expands elastically in the width direction. In this way, the power supply terminals 41, 42 enter the interior of the opening, and when the mounting of the battery pack 100 is completed, the connection terminals 115, 116 connect the power supply terminal 41 to the connection terminal 125 as shown in FIG. , 126 are in a state of being electrically connected with the power supply terminals 42 sandwiched therebetween.

When removing the battery pack 100,
The power supply terminals 41 and 42 are pulled out from the openings 103 and 104 by sliding in the opposite direction to the mounting direction. After this, the battery pack is placed on the receiving surface 19
Is pulled upward from. Each conductive member 111,
When the power supply terminals 41, 42 are pulled out from the openings, the power supply terminals 112, 121, 122 return to the state before mounting due to their own elasticity. As a result, as shown in FIG. 17B, the shielding members 113 and 114 return to the positions where they shield the opening 103, and the shielding members 123 and 124 similarly open the opening 10.
4, the connection terminals 115, 116, 125, 126 arranged inside the openings 103, 104 are completely hidden from the outside of the battery pack 100 electrically and physically. Therefore, the battery pack 10
If 0 is carried alone, each connection terminal 115,
Since no other metal comes into contact with the conductive members 111, 111, 121, 122 of the connection terminal portion including 116, 125, 126, a short circuit between terminals is prevented. Further, since it is completely concealed, dust, oil stains, etc. do not adhere to the connection terminals.

Further, since the shielding member is moved by the elastic conductive member forming the connection terminal between the position where the opening is shielded and the position where the power supply terminal is allowed to enter the inside of the opening, The number of parts can be reduced and the space in the battery pack can be effectively used.

The shielding member is not limited to the above-described shape, and for example, as shown in FIG. 18, bent portions 130a and 131a having a substantially V-shaped cross section are provided at one end of the conductive members 130 and 131, and the bent portions are formed. The insulating portions 132 and 133 may be formed on the surfaces of the 130a and 131a by outsert molding or the like. In addition, in the above-described embodiment, the conductive members 111 and 112 are replaced by the conductive members 121 and 122.
However, the conductive member 111 and the conductive member 112, and the conductive member 121 and the conductive member 122 may be integrally formed by bending.

In each of the above embodiments, the battery pack of the type having the storage battery built therein is described, but the battery pack of the type having the dry battery built therein may be used. Further, although the battery pack is an external type that is mounted on the outside of the video camera, it may be a battery pack that is built in the video camera. Further, in each of the above-described embodiments, the battery pack is slid in the longitudinal direction, but the present invention can also be applied to the battery pack slidably mounted in the width direction.

In each of the above embodiments, a video camera has been described, but the present invention is not limited to this, and for example, an electronic still camera, a portable telephone, a portable word processor, a portable liquid crystal television, a toy, etc. It can also be applied to an electronic device using a battery pack.

[0052]

As described above, in the present invention, the conductive member connected to the power supply terminal is integrally formed with the shield member having the insulating member so as to reduce the exposed area of the conductive member. Therefore, it is difficult for the conductive member and other metal such as a necklace to come into contact with each other, and it is possible to save space and prevent a short circuit between terminals. Further, by providing the conductive member in the concave portion, it is possible to make it difficult for other metal such as a necklace to come into contact with the conductive member having elasticity as compared with the covered insulating member, and the protruding portion is provided on the conductive member. Since this is projected into the path of the power supply terminal, the connection between the power supply terminal and the conductive member is surely performed.

A conductive member is provided in a recess opened across the front end surface on the mounting direction side and the wall surface adjacent to the front end surface, and an insulating plate for closing the opening portion of the recess on the wall surface side is integrated with the conductive member. The conductive member is provided in the concave portion surrounded by the insulating plate and the insulating plate that forms a part of the outer wall of the power supply unit, so that the conductive member is not exposed except for the tip surface with a simple structure. In addition, it is possible to prevent other metal, such as a necklace, from easily entering the recess, and to prevent a short circuit between terminals.

A conductive member having elasticity is provided in the concave portion opened at the tip end surface, and the insulating shield member provided on the conductive member closes the opening when not mounted and is pressed by the power supply terminal when mounted to make the conductive member conductive. Since the member is elastically deformed to move to the position where the power supply terminal is allowed to enter, it is possible to completely hide the conductive member from the outside when it is not mounted and prevent a short circuit between the terminals. Further, since the shielding member can be moved by elastically deforming the conductive member, the number of parts is small and the space of the power supply unit can be effectively used, and the battery pack can be miniaturized. You can

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a connection terminal portion of a battery pack embodying the present invention.

FIG. 2 is a perspective view showing appearances of a video camera, a power adapter, an AC charger, and a battery.

FIG. 3 is a perspective view showing an appearance of a battery pack.

FIG. 4 is a perspective view showing a mounting surface of a battery pack and a receiving surface of a video camera.

FIG. 5 is a cross-sectional view of main parts for explaining a connection terminal portion and a power supply terminal before mounting.

FIG. 6 is a plan view showing a connection terminal portion.

FIG. 7 is a cross-sectional view of an essential part for explaining a connection state of a power supply terminal and a connection terminal when mounted.

FIG. 8 is a perspective view showing an external view of a power adapter.

FIG. 9 is a perspective view showing the appearance of an AC charger.

FIG. 10 is a perspective view showing an external appearance of a battery pack in which a connection terminal is provided in a recess.

FIG. 11 is an enlarged perspective view showing a connection terminal portion of the battery pack.

FIG. 12 is a main-portion cross-sectional view illustrating a connection terminal portion and a power supply terminal before mounting the battery pack.

FIG. 13 is a main-portion cross-sectional view illustrating connection between a power supply terminal and a connection terminal when the battery pack is attached.

FIG. 14 is a perspective view showing a connection terminal portion that constitutes a part of the outer wall of the battery pack with an insulating plate.

FIG. 15 is a perspective view showing an appearance of a battery pack in which a conductive member is hidden from the outside by a shielding member.

FIG. 16 is a cross-sectional view showing a connection terminal portion of the battery pack.

FIG. 17 is an explanatory diagram showing states of the connection terminals when the battery pack is not attached and when the battery pack is attached.

FIG. 18 is a cross-sectional view showing a connection terminal portion of a battery pack having a V-shaped shielding member.

[Explanation of symbols]

11, 80, 100 Battery pack 13 Battery case 14 Video camera 15 AC charger 16, 24 Mounting surface 17 Power adapter 18 Coupler 19, 21 Receiving surface 26, 27, 60, 61, 81, 82, 91, 101,
102 connection terminal part 41,42 power supply terminal 50,54,87,88,92 conductive member 52a, 56a contactor 111,112,121,121,130,131 conductive member 113,114,123,124 shielding member

Claims (5)

[Claims] 1. A short-circuit prevention structure between terminals of a power supply unit for power supply, comprising a connection terminal part mounted on an electronic device and connected to a power supply terminal provided on the electronic device by the mounting, wherein the connection terminal part is A conductive member that is in contact with and electrically connected to the power supply terminal, and is provided integrally with the conductive member, and covers the conductive member so as to reduce the external exposed area of the conductive member. An inter-terminal short-circuit prevention structure comprising an insulating member. 2. The connection terminal portion includes a concave portion that is opened across a tip end surface on the mounting direction side and a wall surface adjacent to the tip end surface, and a convex portion that is in contact with and electrically connected to the power supply terminal. At least this convex portion is formed so as to be inserted into the path of the power supply terminal, and is elastically deformed in a direction orthogonal to the mounting direction by abutting and pressing the power supply terminal that enters the recess during mounting. A conductive member and an insulating member which is provided integrally with the conductive member and covers the conductive member so as to project the convex portion and reduce the external exposed area of the conductive member. The inter-terminal short-circuit prevention structure according to claim 1, wherein 3. A short-circuit prevention structure between terminals of a power supply unit for power supply, which is equipped with a connection terminal part which is mounted on an electronic device and which is connected to a power supply terminal provided on the electronic device by the mounting. A concave portion opened across the tip surface on the mounting direction side and a wall surface adjacent to the tip surface, a conductive member provided in the concave portion and in contact with the power supply terminal for electrical connection, A short circuit prevention structure between terminals, comprising: an insulating plate which is provided integrally with the elastic member and closes an opening portion of the recess on the wall surface side adjacent to the front end surface from the inside of the recess. 4. A short-circuit prevention structure between terminals of a power supply unit for power supply, comprising a connection terminal part which is mounted on an electronic device and which is connected to a power supply terminal provided on the electronic device by the mounting. A recess formed so as to cut out the outer wall across the tip surface on the mounting direction side and the wall surface adjacent to the tip surface; and the power supply terminal that surrounds the recess and enters the recess from the tip surface side. And an insulating plate forming a part of the outer wall of the power supply unit, which is allowed to operate, and provided in the recess surrounded by the insulating plate and in contact with the power supply terminal to be electrically connected. A short-circuit prevention structure between terminals, characterized in that the structure is composed of a conductive member. 5. A short-circuit prevention structure between terminals of a power supply unit for power supply, comprising a connection terminal part mounted on an electronic device and connected to a power supply terminal provided on the electronic device by the mounting. A recess having an opening at the tip end surface on the mounting direction side and extending along an axis parallel to the mounting direction; and a recess provided in the recess so as to extend immediately before the opening, and electrically contacting with the power supply terminal. A conductive member having elasticity to be connected and the conductive member are provided integrally with the conductive member in the vicinity of the opening. When not mounted, the opening is closed to conceal the conductive member from the outside, and when mounted, enters from the opening. An inter-terminal shorting characterized by comprising an insulating shield member that abuts against the power supply terminal and is pressed to elastically deform the conductive member to move to a position permitting entry of the power supply terminal through the opening. Prevention structure.