JPH08273658A - Inter-terminal short circuit preventive structure - Google Patents

Abstract

PURPOSE: To prevent a short circuit by contact with the other metal by preventing connecting terminals from being exposed outside by rotary covers at uninstalled time. CONSTITUTION: A pair of connecting terminals 25 and 26 to be connected to a pair of power source terminal parts of a video camera are arranged in a battery pack 11. In the connecting terminals 25 and 26, connecting terminals 52a, 52b, 62a and 62b are arranged inside recessed part 51 and 61 over a tip surface 50 and an installing surface 16. Rotary covers 53 and 63 to rotate between a closing position to hide the connecting terminals 52a, 52b, 62a and 62b and an opening position to be exposed outside with a shaft orthogonal to the entering direction of a power source terminal as the center, are arranged in the respective recessed parts 51 and 61. At uninstalled time, the rotary covers 53 and 63 exist in the closing position by being energized by energizing means 55 and 65. At installed time, the power source terminal presses the rotary covers 53 and 63, and they rotate in the opening position, and the power source terminal enters the recessed parts 51 and 61, and is connected to the connecting terminals 52a, 52b, 62a and 62b.

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, and more specifically to a television camera equipped with a video tape recorder, an electronic still camera or the like, and an electronic device such as a charger used therefor. The present invention relates to a structure for preventing a short circuit between terminals of a power supply unit such as a power supply adapter and a battery pack.

[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 made smaller. In addition, the battery can be exchanged, and when the battery is exhausted and photography becomes impossible, the attached battery pack and another battery pack prepared in advance can be exchanged for photography. It is convenient for you to continue. 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. Further, in the battery pack described in Japanese Utility Model Laid-Open No. 5-94953, a pair of long holes are provided along the mounting direction of the battery pack, and conductive terminals are arranged inside these long holes. According to these, even when a plate-shaped conductor such as scissors comes into contact with the wall surface of the battery pack,
It does not come into contact with both connection terminals at the same time, and there is no short circuit between both connection terminals.

[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 undulating metal, etc. There is a problem that the parts enter and come into contact with the pair of connection terminals at the same time to short-circuit them and damage the battery.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a short-circuit preventing structure for terminals which surely prevents short-circuiting between connecting terminals due to contact of a metal product or the like.

[0007]

In order to solve the above-mentioned problems, in the invention of claim 1, the connection terminal portion has a concave portion having an opening at a position facing the power supply terminal at the time of mounting, and the inside of this concave portion. And a conductive member that is in contact with the power supply terminal for electrical connection, and is rotatable about an axis orthogonal to the direction in which the power supply terminal enters the recess. Insulation that is biased by biasing means to conceal the conductive member from the outside, abuts against the power supply terminal that enters the opening when attached, and is pressed to rotate to a position that allows the power supply terminal to enter from the opening. It is composed of a rotating cover of the sex.

According to the second aspect of the present invention, the concave portions are adjacent to each other.
Having an opening across two wall surfaces, the conductive member,
It is provided on two wall surfaces in the recess that are parallel to and face each other in the approach direction of the power supply terminal.

[0009]

When the power supply unit is mounted on the electronic device, the power supply terminal rotates the rotary cover to enter the recess and contacts the conductive member for electrical connection. When removed from the electronic device, the rotating cover is biased to rotate to a position where the conductive member is not exposed to the outside, concealing the conductive member, preventing contact with other metal, and preventing short circuit.

[0010]

EXAMPLE A video camera is provided with a battery pack, a power adapter, an AC charger, a DC charger and the like for supplying power. In this embodiment, a battery pack, a power adapter, etc. are called a power supply unit, and a video camera, an AC charger, a DC charger, etc. are called electronic devices, and a short circuit between connection terminals for external connection provided in the power supply unit. I try to prevent it.

The battery pack 11 shown in FIG. 2 comprises a storage battery 12, for example, a lithium ion battery (secondary battery), and a battery case 13 containing the storage battery 12. The battery case 13 is composed of two parts, an upper case 13a and a lower case 13b made of a non-conductive material such as insulating engineering plastic. The bottom surface of the lower case 13b has a mounting surface 1 that can be mounted on the video camera 14, the AC charger 15, and the DC charger.
6 is formed.

The video camera 14 includes a battery pack 1
1, or a receiving surface 19 for mounting the coupler 18 of the power adapter 17 is provided outside the rear surface.

The AC charger 15 has a built-in primary circuit having a power transformer and the like, and a secondary circuit having a rectifier circuit and the like, and takes in household power from the power plug 20.
The voltage is transformed in the primary circuit, and the battery pack 11 mounted via the receiving surface 21 provided on the upper surface is charged with direct current from the secondary circuit. Outside the AC charger 15, 2
The connector receiver 22 connected to the next circuit is exposed and provided. The DC charger is the power plug 2
It has a plug to be connected to a cigarette socket of a car instead of 0, transforms a DC power source (12V / 24V) obtained from a car battery with a built-in DC transformer circuit to charge the battery pack 11, and a power adapter. 17, the power can be directly supplied from the car battery to the video camera 14, and the receiving surface and the connector receiving provided on this have the same structure as the AC charger, and therefore detailed description thereof is omitted here. .

The power adapter 17 is the AC charger 1
5 or the DC charger and the video camera 14, the connector 23 is connected to the connector receiver 22 and the coupler 18 is connected to the video camera 14. This coupler 18
An attachment surface 24 that can be attached to the receiving surface 19 of the video camera 14 is formed on the. In addition, the mounting surface of the battery pack 11 and the coupler 18, and the video camera 1
4, The shape of the AC charger 15 and the receiving surface of the DC charger is preferably such that the coupler 18 cannot be mounted on the receiving surface of the AC charger 15 and the DC charger.

As shown in FIG. 3, the lower case 13b includes
A pair of connection terminal portions 25 and 26 are provided on the distal end side in the longitudinal direction. The connection terminal portions 25 and 26 will be described later. Further, on the mounting surface 16, four concave grooves 27 to 30 are formed on both side surfaces in the width direction, and an auxiliary groove 31 is further formed in the center on the rear end side in the longitudinal direction. The four recessed grooves 27 to 30 are substantially L-shaped.

Around the receiving surface 19 of the video camera 14, a mounting restriction wall 32, which is the same size as or slightly wider than the mounting surface 16 of the battery pack 11, is provided so as to surround the three directions. The mounting restriction wall 32 allows the battery pack 11 to slide along the longitudinal direction,
Movement along the width direction is restricted.

Four convex portions 34 to 37 are formed on the inner surface of the mounting regulation wall 32 facing each other. Convex portion 34
To 37 are formed in an inverted L-shape so as to project, and are engaged with the four recessed grooves 27 to 30, respectively, and the battery pack 1
The sliding movement in the direction of arrow B shown in FIG.

To mount the battery pack 11, the mounting surface 16 is pressed against the receiving surface 19 between the mounting restriction walls 32 at a position shifted in the longitudinal direction (arrow A), and is slid in the direction of arrow B. This sliding movement is restricted when the four convex portions 34 to 37 engage with the four concave grooves 27 to 30. In addition, when removing, reverse operation is performed. Further, reference numeral 38 is an elastic auxiliary claw formed by cutting out a part of the receiving surface 19, and engages with the auxiliary groove 31 when the battery pack 11 is mounted and has a mounting direction indicated by an arrow B. Regulates movement of the battery pack 11 in the opposite direction.

The battery pack 11 is mounted on the mounting regulation wall 32.
The pair of power supply terminals 39 and 40 are provided at positions where the pair of connection terminal portions 25 and 26 face each other when the is mounted so as to extend in the direction opposite to the mounting direction. A cover member 41 is provided between the pair of power supply terminals 39 and 40. The cover member 41 has a substantially T-shaped cross-section, and is movable between an exposure position where the power supply terminals 39 and 40 are exposed from the gaps at the lower ends of both ends and a covering position where the power terminals 39 and 40 are covered in the gaps at the lower ends. The biasing means 33 (see FIG. 6) such as a spring or a leaf spring is constantly biased toward the covering position. The movement of the cover member 41 is performed along the mounting direction of the battery pack 11 (direction of arrow B). The cover member 41 comes into contact with the front end surface of the battery case 13 of the battery pack 11 inserted in the direction of the arrow B and moves from the covering position to the exposing position. Further, when removed, the cover member 41 is biased by the biasing means 33 to move from the exposed position to the covered position, and the power supply terminals 39, 4
Since 0 is covered, corrosion and deformation of the power supply terminals 39 and 40 can be prevented.

As shown in FIGS. 1 and 4, the connection terminal portion 2
Reference numeral 6 denotes one end face (hereinafter referred to as a front end face) 50 on the mounting direction (longitudinal direction) side of the lower case 13b of the battery pack 11.
And a recess 61 opening across the mounting surface 16,
It is composed of a conductive member 62 disposed in the recess 61 and a rotary cover 63.

In the rising surface from the mounting surface 16 of the recess 61, the fan-shaped groove 6 is formed on both side walls 64 of the recess 61.
4a are formed respectively. The conductive member 62 is bent in a U-shape, and its end portions are fan-shaped connection terminals (electrodes) 62a and 62b.
The a and 62b are fitted into the grooves 64a of the recess 61, respectively, and fixed so as to be exposed in the recess 61. The connection terminals 62a and 62b are formed in the same plane as the side walls 64 so that they do not protrude toward the center of the recess 61 and do not hinder the rotation of the rotary cover 63. In addition, a conductive member that contacts the power supply terminal 40, that is, the connection terminal 62.
By providing a and 62b on the wall surface 64 in the recessed portion 61 that is parallel to the direction in which the power source terminal enters and cooperates with the elasticity of the power source terminal 40, electrical connection is ensured. The conductive member 62 is connected to one electrode of the storage battery 12 inside the battery case 13.

The rotary cover 63 is made of an insulating material, for example, the same insulating engineering plastic as the battery case 13, and has a cover portion 63a having an arc-shaped cross section and a shaft portion 63b formed integrally with the cover portion 63a. It consists of and. A torsion spring 65 is attached to one end of the shaft portion 63b. Bearings 66, which are formed with keyholes, are provided on both sides of the recess 61 near the opening of the tip surface 50. In the rotary cover 63, the shaft portion 63b is press-fitted into the bearing 66 and is axially attached by utilizing the elastic deformation of the bearing 66. One end 65a of the torsion spring 65 abuts on the inside of the cover portion 63a, and the other end 65b abuts on the surface 61a in the recess 61 parallel to the mounting surface 16, respectively.
3 is urged clockwise in the figure. The rotating cover 6
The shape of 3 is not limited to an arcuate cross section, but may be, for example, a plate shape obliquely arranged in the recess 61 or an L shape that closes the openings of the surfaces 16 and 50.

The rotary cover 63 provided in this way
5A, the opening of the recess 61 is closed to prevent the connection terminals 62a and 62b from being exposed to the outside, and the connection terminal 6 shown in FIG. 5B.
Between the open position where 2a and 62b are exposed to the outside, the shaft portion 63b orthogonal to the mounting direction of the battery pack 11 is rotatable. When the battery pack 11 is mounted, it abuts on the power supply terminal 40 that has entered the recess 61, rotates from the closed position to the open position, and allows the power supply terminal 40 to enter the recess 61. Further, when the battery pack 11 is removed, the rotary cover 63 is biased by the torsion spring 65 to rotate from the open position to the closed position. When rotated to the closed position, the rotation cover 63
The stepped portion 63c formed at one end of the cover portion 63a comes into contact with the mounting surface 16, and further rotation is restricted. Instead of the torsion spring 65, a leaf spring, a coil spring, or the like may be used to urge the rotation cover 63. Since the connection terminal portion 25 on the opposite side also has the same function as the connection terminal portion 26, each member of the connection terminal portion 25 is shown in FIG.

As shown in FIG. 6, the power supply terminal 40 is provided with a contact 40a which is inserted into the recess 61. Contact 40
In a, a conductive member having elasticity is formed by bending, and the cross section having a corner at the tip has a substantially rhombic shape. The contactor 40a has a width L1 wider than the inner space L2 between the connection terminals 62a and 62b so as to surely contact the connection terminals 62a and 62b provided on both walls of the recess 61. . When the battery pack 11 is mounted, the two surfaces on the tip end side of the contact 40a come into contact with the periphery of the opening on the tip end surface 50 side, are elastically deformed in the width direction, enter the concave portion 61, and extend in the width direction. Connection terminal 6 due to elasticity that tends to spread
Contact with 2a and 62b. In FIG. 6, the rotary cover 63 is omitted for the sake of explanation. Further, the power supply terminal 39 on the opposite side also has the same function as the power supply terminal 40, and each member of the power supply terminal 39 is shown in parentheses in FIG.

As shown in FIG. 7, the mounting surface 24 of the coupler 18 is of the same size as the mounting surface 16 of the battery pack 11, and can be mounted on the receiving surface 19 of the video camera 14 as well. A pair of connection terminal portions 42 and 43, concave grooves 44 to 47, and auxiliary groove 48, which have the same function as that formed on the surface 16, are provided.

As shown in FIG. 8, the receiving surface 21 of the AC charger 15 has the same size as the receiving surface 19 of the video camera 14, so that the mounting surface 16 of the battery pack 11 can be mounted on it. The mounting control wall 71, which has the same function as that formed on the receiving surface 19, and the pair of power supply terminals 7.
3, 74, convex portions 75 to 78, auxiliary claw 79, and cover member 80 are provided.

Next, the operation of the embodiment configured as described above will be described. When the battery pack 11 is mounted on the video camera 14, as shown in FIG. 9, the mounting surface 16 is pressed against the receiving surface 19 between the mounting restriction walls 32 with the mounting surface 16 displaced in the longitudinal direction (arrow A). As a result, the auxiliary claw 38 is pushed by the mounting surface 16 and elastically deforms downward.

After that, the battery pack 11 is slid in the direction of arrow B as shown in FIG.
This sliding movement is restricted when the four convex portions 34 to 37 engage with the four concave grooves 27 to 30. By this slide movement operation of the battery pack 11, the cover member 41 is moved to the exposure position against the bias of the biasing means 33 together with the battery pack 11. And the electric terminal 3
9 and 40 are in contact with the periphery of the openings of the recesses 51 and 61 on the side of the front end surface 50, and are elastically deformed in the width direction while recesses 51 and 6 are formed.
Enter each one.

When the power supply terminals 39 and 40 enter the recesses 51 and 61, the cover portions 53a of the rotary covers 53 and 63,
63a is contacted and pressed. As a result, as shown in FIG. 5B, the rotary covers 53 and 63 are attached to the torsion spring 5
It rotates to the inner side of the battery pack 11 around the shaft portions 53b and 63b against the bias of the power supply terminals 3 and
The recesses 51 and 61 of 9 and 40 are allowed to enter deep inside. Then, the power supply terminals 39, 40 are in contact with the connection terminals 52a, 52b, 62a, 62b, respectively, by the elasticity of expanding in the width direction. As a result, the power supply terminals 39, 40 and the conductive members 52, 62 are electrically connected to each other, and power can be supplied from the storage battery 12 built in the battery pack 11 to the video camera 14.

The power supply terminal 39 is a connection terminal 52a, 52b.
In addition, the power supply terminal 40 is sandwiched between the connection terminals 62a and 62b, and the connection terminals 52a, 52b, 62a and 62 are
Since b is pressed in the width direction and brought into contact with each other, electrical connection is ensured.

When the mounting is completed, the auxiliary claw 38 moves into the auxiliary groove 3
1 and restricts the battery pack 11 from slidingly moving in the direction opposite to the arrow B direction, and prevents the battery pack 11 from falling out of the mounted state. In addition, the convex portion 3
4 to 37 enter the recesses 27 to 30 and are locked,
It does not come out in the direction opposite to the arrow A direction.

At the time of removal, the battery pack 11 is slid in the direction opposite to the arrow B direction shown in FIG. At this time, the auxiliary claw 38 moves the auxiliary groove 31.
Since the auxiliary claw 38 is pressed down at the rear end edge of the moving direction, the battery pack 11 is elastically deformed downward and the battery pack 11 can be slid. After the sliding movement of the battery pack 11, the battery pack 11 is pulled out in the direction opposite to the arrow A direction shown in FIG. In this way, the battery pack 11 can be easily removed. When the battery pack 11 is removed, the rotating covers 53 and 63 are rotated to the closed position by the urging of the torsion springs 55 and 65,
Connection terminals 52a and 52b and connection terminals 62a and 62b
However, the rotary covers 53 and 63 cover the recesses 51 and 61, respectively.

As a result, the connection terminals 52a, 52b, 6
2a and 62b are not exposed to the outside and do not come into contact with other metals when carried. For example, even a foldable necklace will not come into contact. Therefore, the connection terminal 52
A short circuit between a and 52b and the connection terminals 62a and 62b is prevented. Further, since the cover member 41 is moved to the covering position by the urging of the urging means 33, the power terminals 39 and 40 of the video camera 14 can be prevented from touching with fingers or the like.

When the coupler 18 of the power adapter 17 is mounted on the video camera 14 and the battery pack 11 is mounted on the AC charger 15, the same mounting operation as described above may be performed. In these cases, for example, when the power supply terminals 73 and 74 of the AC charger 15 or the connection terminal portions 42 and 43 of the coupler 18 of the power adapter 17 connected to the AC charger 15 are short-circuited with the power plug 20 plugged into the outlet Charger 1
The internal circuit of 5 is damaged. However, in this embodiment, since the cover member 80 is moved to the covering position by the biasing means, the power supply terminals 73 and 74 of the AC charger 15 are prevented from being corroded and deformed, and the connection terminal of the coupler 18 is also provided. The connection terminals of the parts 42 and 43 are not exposed to the outside due to the action of the rotating cover, so that other metal,
For example, a necklace does not come into contact.

In the above embodiment, the battery pack 11 is mounted by pressing it against the receiving surface 19 and then slidingly moving it. However, by simply pressing the battery pack 11 onto the receiving surface 19, the battery pack 11 can be mounted on a video camera or the like. Can be installed. Hereinafter, this embodiment will be described.
In the following description, the same components as those in the above embodiment are designated by the same reference numerals.

The video camera 90 shown in FIG. 11 is provided with a receiving surface 91 on which the battery pack 11 can be mounted on the outside of the back surface. Around the receiving surface 91, the receiving surface 9
A mounting restriction wall 92 is provided so as to surround the No. 1. A pair of power supply terminals 9 extending from the receiving surface 91 in a direction perpendicular to the receiving surface 91 (backward direction of the video camera 14).
3,94 are protruding. These power supply terminals 93 and 94 are
Contactors 93a, 94a similar to those in the above-mentioned embodiment are formed at the tip thereof. Further, four projections 95 to 98 are projected at positions close to the inner surface of the mounting regulation wall 91 facing each other.

As shown in FIG. 12, the convex portions 97 and 98 are inverted L-shaped, and the heads 97a and 98a have concave portions 2 at one end thereof.
Slopes 97b and 98b for slidingly moving the convex portions 97 and 98 in the arrow D direction when pressed in the arrow C direction by the edges 29a and 30a of the lower end portions of 9 and 30 are formed. The convex portions 95 and 96 are similar to the convex portions 97 and 98.
The convex portions 95, 96, 96, 97 are integrally formed, and the connecting portion is arranged inside the video camera 14. These convex portions 95, 96, 96, 97 are slidably attached to the video camera 14 in the direction along the arrow D direction, and are biased in the direction opposite to the arrow D direction by a biasing means 100 such as a spring or a leaf spring. Being energized. In addition, the convex portions 95, 96,
A slide button 110 for removing the battery pack 11 is integrally formed at the connecting portion of 96 and 97, and is exposed to the outside of the video camera 90.

The operation of the above configuration will be described. When mounting the battery pack 11 on the video camera, as shown in FIG. 11, the mounting surface 16 is pressed against the receiving surface 19 between the mounting restriction walls 92 in a state of being aligned with the receiving surface 91 (arrow C). With this operation, as shown in FIG.
The edges 29a, 30a at the lower end of each recess 29, 30 are
It contacts the slopes 97b, 98b of the convex portions 97, 98 and presses them in the direction of arrow C. As a result, each convex portion 97, 9
8 slides in the direction of arrow D against the bias of the biasing means 100, as shown in FIG.

When the battery pack 11 is continuously pressed,
Further, the convex portions 97 and 98 are slid and moved, and the head 97
The a and 98a are in a state of entering from the openings of the recesses 29 and 30 on the side of the mounting surface 16. Then, when the battery pack 11 is further pressed in the direction of arrow C, FIG.
As shown in FIG.
7, 98 slide in the direction opposite to the direction of arrow D, and the heads 97a, 98a enter the portions of the recesses 29, 30 extending in the longitudinal direction. In the same manner, the convex portions 95 and 96 on the opposite side also have their heads inserted into the portions of the concave portions 27 and 28 extending in the longitudinal direction. In this way, the mounting of the battery pack 11 is completed.

Since the convex portions 95 to 98 enter into the concave portions 27 to 30 and are locked, the battery pack 11 is prevented from coming off in the direction opposite to the arrow C direction. Further, when the mounting is completed, the mounting restriction wall 92 prevents the battery pack 11 from sliding in the longitudinal direction and the width direction thereof, and thus is prevented from falling off.

FIG. 13 shows the state of the connection terminal portion 26 at the time of this mounting. Before mounting, as shown in FIG. 13A, the rotary cover 63 is biased by the torsion spring 65 and is in the closed position. When the mounting surface 16 of the battery pack 11 is pressed against the receiving surface 11, the contactor 94a of the power supply terminal 94 comes into contact with the periphery of the recess 61 and elastically deforms into the recess 61 to cover the cover portion 6 of the rotary cover 63.
3a is contacted and pressed. As a result, the rotation cover 63
13 rotates to the inner side of the battery pack 11 against the bias of the torsion spring 65, as shown in FIG. Then, the contactor 94a of the power supply terminal 94 enters the inner part of the recess 61 and is elastic so as to expand in the width direction.
It comes into contact with a and 62b. Similarly, the contact 93a of the power supply terminal 39 comes into contact with the connection terminals 52a and 52b.

In this way, the battery pack 11 is
It is attached to the video camera with a single pressing operation. Further, in the recesses 51 and 61, the connection terminals 52a and 52
Since b, 62a, 62b are provided on the wall surfaces 54, 64 in the recessed portion 61 facing each other in parallel to the approach direction of the power supply terminal, even when the mounting direction is changed in this way, the connection terminals 52a, 52b, It is not necessary to change the arrangement of the 62a and 62b, and the contact with the power supply terminals 93 and 94 can be ensured.

When removing the battery pack 11, the slide button 11 exposed to the outside of the video camera 90.
0 is slid in the direction of the arrow D against the bias of the biasing means 100, and the battery pack 11 is pulled out in the direction opposite to the direction of the arrow C while maintaining this state. When the slide button 110 is slid, the protrusions 95 to 98 slide in the direction of arrow D, and the recesses 27 to 30 and the protrusions 95 to 98 are disengaged, which is opposite to the direction of arrow C. The battery pack 11 can be pulled out in the direction. In this way, the battery pack 11 is connected to the video camera 90.
Can be easily removed from. Battery pack 11
When the rotation cover 53, 63 is removed, the torsion spring 5
The connection terminals 52a and 52b and the connection terminals 62a and 62b are rotated to the closed position by the urging force of 5, 65.
The rotation covers 53 and 63 cover the recesses 51 and 61, respectively.

The video camera 90 described above is also used.
Since the power supply terminals 93 and 94 are fixed to the receiving surface 91, the short side of the mounting restriction wall 92 can be thinned as shown in FIG. 11, and the battery pack 11 and the video camera 9 can be made thin.
It is possible to reduce the step difference of 0. Therefore,
The degree of freedom in designing the video camera can be increased. Although the video camera 14 and the battery pack 11 are described in the above embodiment, the same applies to the AC charger 15, the DC charger, the coupler 18, and the like.

Incidentally, also in the first embodiment,
Similar to the above-mentioned embodiment, the power supply terminal can be projected from the receiving surface. In this case, the contacts 39a, 40a enter the recesses 51, 61 through the openings on the side of the tip surface 50, and the portions connecting the contacts 39a, 40a from the receiving surface 19 are passed through the openings on the side of the mounting surface 16. do it.

As can be seen from the description of the above embodiments, the battery pack 11 is not limited to being mounted in one direction, and the battery pack 11 can be slid along the longitudinal direction to be mounted on the receiving surface. It is also possible to move it in the thickness direction so that the mounting surface and the mounting surface are aligned with each other. Further, the tip end surface of the battery pack 11 is tilted downward, the battery pack 11 is moved to connect the power supply terminal and the connection terminal, and then the rear end of the battery pack 11 is moved in the receiving surface direction. It is also possible to wear it.

When the mounting direction is one direction,
It is not necessary to open the concave portion across two adjacent surfaces, and a concave portion or hole having only the opening may be provided on the surface facing the mounting direction, and the connection terminal may be arranged inside the hole.
Then, the rotating cover may be provided so as to be rotatable around a shaft in a direction orthogonal to the mounting direction, for example, between a position for closing the opening and a position for opening. In this case, when the connection terminal is arranged outside the rotation area of the rotation cover, the power supply terminal is made into a rod shape and the connection terminal side has elasticity to ensure the contact between the power supply terminal and the connection terminal. Good.

In each of the above embodiments, the power supply terminals 39, 40,
Although the bent parts 93 and 94 are used, the structure of the power supply terminal is not limited to this. For example, an elastically deformable circular wire may be arranged at the tip of the pin. In addition, in each of the above-described embodiments, the protrusions 27 to 30 and the protrusion 3 are provided in order to maintain the mounting of the battery pack 11.
4 to 37, 95 to 98 and the engagement between the auxiliary claw 38 and the auxiliary groove 31 are used.
You may change suitably according to the mounting direction of 1 and mounting operation.

Further, in each of the above-mentioned embodiments, the battery pack of the type having the built-in storage battery is described, but the battery pack of the type having the dry battery 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.

Further, in each of the above embodiments, the electronic equipment such as the video camera has been described. However, the present invention is not limited to this. For example, an electronic still camera, a portable telephone, a portable FAX, a portable word processor, It goes without saying that it can be applied to electronic devices using battery packs such as electronic notebooks, portable LCD televisions, portable audio cassette decks, portable CD players, and toys.

[0051]

As described in detail above, claim 1 is as follows.
In the invention described above, a conductive member is disposed inside a recess having an opening at a position facing the power supply terminal, and the insulating property is rotatable in the opening of the recess about an axis orthogonal to the direction of entry of the power supply terminal. A rotating cover is provided to prevent the conductive member from being exposed to the outside when it is not attached, and when it is attached, it is pressed by the power supply terminal to allow the power supply terminal to enter the inside of the recess and to be electrically conductive with the power supply terminal. Since it is made to contact with the elastic member, it is possible to surely prevent the short circuit.

According to the second aspect of the present invention, the opening of the recess is formed so as to straddle two adjacent wall surfaces, and the conductive member is provided on the wall surfaces in the two recesses that are parallel to and opposite to the direction in which the power supply terminal enters. Therefore, the contact between the power supply terminal and the conductive member can be ensured, and the power supply unit can be installed in multiple directions.

[Brief description of drawings]

FIG. 1 is a perspective 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, a charger, and a battery pack.

FIG. 3 is a perspective view showing a mounting surface of a battery pack and a receiving surface of a video camera.

FIG. 4 is an exploded perspective view showing a connection terminal portion.

FIG. 5 is a cross-sectional view of an essential part for explaining the state of the rotary cover before and during mounting.

FIG. 6 is a cross-sectional view of an essential part for explaining a connection terminal part and a power supply terminal before mounting.

FIG. 7 is a perspective view showing an external view of a power adapter.

FIG. 8 is a perspective view showing an external view of an AC charger.

FIG. 9 is a lateral cross-sectional view of a main part showing a state where the battery pack is attached to the video camera, and the internal mechanism is omitted.

FIG. 10 is a lateral cross-sectional view of a main part showing a state where the battery pack is attached to the video camera.

FIG. 11 is a perspective view showing a mounting surface of a battery pack and a receiving surface of a video camera which are mounted by a single operation.

FIG. 12 is an explanatory diagram illustrating a state when the battery pack of the embodiment is mounted.

FIG. 13 is a main-portion cross-sectional view illustrating a state of the rotary cover before and during mounting in the embodiment.

[Explanation of symbols]

 11 Battery Pack 14, 90 Video Camera 15 AC Charger 16, 24, 91 Mounting Surface 17 Power Adapter 18 Coupler 19, 21 Receiving Surface 25, 26 Connection Terminal Section 39, 40, 93, 94 Power Terminal 39a, 40a, 93a, 94a Contact 41,80 Cover member 51,61 Recessed portion 52,62 Conductive member 52a, 52b, 62a, 62b Connection terminal 63 Rotation cover

Claims (2)

[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. A recess having an opening at a position facing the power supply terminal when mounted, and provided inside the recess,
A conductive member that comes into contact with the power supply terminal for electrical connection and a rotatable member that is rotatable about an axis that is orthogonal to the direction in which the power supply terminal enters the recess. Is biased to hide the conductive member from the outside,
An inter-terminal cover characterized by comprising an insulating rotary cover which is abutted against and pressed by the power supply terminal entering the opening when mounted and is rotated to a position permitting the power supply terminal to enter through the opening. Short circuit prevention structure. 2. The recess has an opening extending over two wall surfaces adjacent to each other, and the conductive member has two wall surfaces that are parallel to each other and face each other in the recess in the recess. The inter-terminal short-circuit prevention structure according to claim 1, wherein the inter-terminal short-circuit prevention structure is provided.