JP2813933B2 - Power connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power connector used for connecting a power cord from a battery box to a video camera, for example.

[0002]

2. Description of the Related Art In general, a video camera has a detachable battery pack. When an AC power supply is used or power is supplied from another battery box via a cord, as shown in FIG. And a contact plug provided with the same contact terminal in the same shape as the insertion portion of the battery pack. DC power from a DC adapter 2 or the like separately provided is supplied through a cord 3. I have.

In these conventional connectors, movable contacts 5 and 5 urged in a projecting direction are protruded from a plug fitting portion 4a of the camera device 4, and fixed contacts 6 and 5 are provided on the connector 1 side. 6, the plug 1 is fitted into the plug fitting portion 4a as shown in FIG. 10, and is slid, so that the movable contacts 5, 5 are utilized by using the inclined portions 6a, 6a of the fixed contacts 6, 6. To obtain the required contact pressure.

[0004]

In such a conventional power supply connector, since the contacts on the connector side are always largely exposed on the surface, there is a danger of short-circuiting when the connector is not fitted. However, since the movable contact is always protruded, there is a problem that the movable contact is easily damaged by touching something.

The present invention has been made to solve the above-mentioned conventional problems.

[0006]

A feature of the present invention for solving the above-mentioned conventional problems is that a device to which power is supplied is provided with a plug insertion portion, and a fixed contact is made on the inner wall surface of the plug insertion portion. And a connector plug which is fitted to the plug fitting portion while sliding along the exposed surface of the fixed contact, wherein the connector plug has a surface facing the fixed contact. Urged in the direction of protrusion,
A plurality of leaf spring movable contact springs respectively connected to the + and-poles of the DC power source; and a slide lid reciprocating on the projecting side surface of the movable contact spring and urging the movable contact spring toward the drawing side with the spring. By inserting a connector plug into the plug fitting portion, the slide lid is pushed in the opening direction so that the movable contact spring protrudes toward the fixed contact , and each movable contact spring of the slide lid is pushed.
By providing a step in the pressure part, the connector is
Plug is inserted and the slide lid slides open.
Is connected to the positive pole side of each movable contact terminal.
That the movable contact spring is protruded with a delay
In the connector.

[0007]

In the power supply connector of the present invention, when the plug is not fitted, the slide lid moves in the closing direction by the spring pressure, the movable contact spring is pushed in, and most of the surface side is closed by the slide lid. Conversely, in the plug-fitted state, the slide lid is opened, and the movable contact spring protrudes by its own elasticity and is pressed against the fixed contact on the device side. In addition, the movable contact spring is projected at the slowest due to the step of the movable contact spring pressing portion of the slide lid, the + contact spring is projected the slowest, and the + contact is conducted after the-contact spring is brought into conduction with the fixed contact. Protection is provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.

In the figures, A is a plug constituting the connector of the present invention. The plug A includes a box portion 10a that also serves as a knob, and a plate-like insertion portion 10b protruding laterally from the bottom edge of the box portion 10a.

In the insertion portion 10b, flanges 11 and 11 are integrally formed on upper sides of both sides, and a window 13 which is opened and closed by a slide lid 12 is provided substantially at the center of the upper surface. The movable contact springs 14, 14,... Made of springs are projected by their own elasticity. Then, the flanges 11, 11 are inserted and inserted into concave grooves 16, 16 formed on both sides of the inner surface of the plug fitting portion 15 on the bottom surface of the video camera B indicated by the phantom line in FIG. Is connected to a power cord C.

A detent protrusion 17, 17 is urged in a protruding direction by a spring below both flanges 11, 11, and is provided on the flange of the protrusion 17 and the flange of the plug fitting portion 15. The engagement with the plug 16 prevents the plug from coming off, and provides a sense of moderation when plugging is completed.

As shown in FIG. 8, a power supply cord C has a negative conductor C1 connected to the earth side of the DC power supply, a positive conductor C2 connected to the positive power supply, and a signal wire C3. A slide switch 18 for power ON / OFF, a capacitor 19, and a coil inductor 20 are housed in 10a, and two negative terminals 14 are connected through these.
a, 14a, two positive terminals 14b, 14b and one signal terminal 14c, and these terminals are respectively connected to separate movable contact springs 14, 14,....

The connector A has a window 13 formed substantially at the center of the position of the insertion portion 10b, and a slide lid 12 is mounted in the window 13.

A switch operation rod 12b is integrally formed at the rear end of the slide lid 12. The switch operation rod 12b is inserted into the box portion 10a so as to penetrate the upper portion of the insertion portion 10b. A slide switch 18 for turning on and off the + side of the power supply circuit is housed in the box 10a at a position facing the tip of the switch operation rod 12b.

As shown in FIGS. 4 and 6, the slide switch 18 has a slider 41 housed in a box-shaped mold case 40 so as to be reciprocally movable in the same direction as the sliding direction of the switch operating rod 12b. Reference numeral 42 indicates that the switch operation rod 12b is constantly pushed to the side where it is pushed out. A slider 41 holds a clip-shaped movable contact piece 43, and a coil spring 42 is
The circuit is switched from the OFF state to the ON state by being pressed against the circuit.

As shown in FIG. 5, each movable contact spring 14 has an inclined portion 55 inclined from the fixing base portion 54 through which the protruding shaft 50 penetrates to the upper surface side of the insertion portion. The contact portion 56 is integrally formed. When the slide lid 12 is in the closing direction, the slide lid 12
The inclined portion 55 is pressed by the contact spring pressing portion 57 at the front lower edge of the slide cover 12, and the contact portion 56 is pressed down to the upper surface of the slide lid 12, that is, to a position lower than the surface of the insertion portion 10b.

As shown in FIG. 6, each contact spring pressing portion 57 has a portion corresponding to the movable contact spring to which the two + terminals 14b, 14b are connected, different in height from other portions. When the sliding lid 12 is slid in the opening direction of the window 13, these two movable contact springs are projected later than the other, so that the + contact is connected after the − contact is connected. Parts are connected.
The contact timing of each contact including the slide switch 18 is determined by the terminals 14a, 14a,
The contacts 14a and 14c contact first, then the slide switch 18 is turned on, and finally the positive terminals 14b and 14b contact. This is to prevent the occurrence of spark during the switching operation because the fixed contact piece of the slide switch 18 needs to be thinned. If the contact piece of the slide switch 18 has a sufficient thickness, the ON operation may be performed last.

In the plug fitting portion 15, plate-like fixed contacts 58 are exposed on the wall surface at positions where the plug insertion portions 10b are completely inserted and opposed to the contact portions 56 of the movable contact springs 14, respectively. It is fixed.

The corner 59 at the end of the plug fitting portion 15 serves as a switch operating rod operating portion, and the upper end 12c of the switch operating rod 12b hits the switch operating rod 12b by the pushing operation of the plug. Are operated in the switch operation direction.

In the connector thus constructed, when the plug A is not fitted, the slide lid 12 is moved in the direction to close the window 13 by the pressing force of the coil spring 42 of the slide switch 18, and the movable contact The spring 14 is pushed into the window 13.

When the insertion portion 10b of the plug A is inserted into the plug receiving portion 15, as shown in FIG.
Near the insertion end, the upper edge of the front end of the switch operating rod 12b hits the plug against the corner 59, and when the plug is further pushed in, the slide lid 12 operates in the opening direction, and each movable contact spring
Protrudes from the window 14 by its own elasticity and is pressed against the fixed contact 58 of the video camera B.

At this time, the spring pressing portion 5 of the slide lid 12
Since the height difference is provided in 7, the movable contact spring on the negative side contacts the fixed contact 58 first to conduct, and finally the positive side conducts.

Since the switch operating rod 12b is pushed toward the slide switch 18, the slider 14 is pushed in against the coil spring 42, and the power supply circuit is switched to the ON state.

In the above-described embodiment, the closing of the slide cover 12 in the closing direction is performed by the coil spring 42 of the slide switch 18. However, in the present invention, the slide switch 18 is not necessarily required, and only the coil spring is used. Is also good.

[0025]

As described above, according to the present invention, a movable contact spring is provided by being urged in a direction protruding from a window on the connector plug side, and a slide lid for opening and closing the window is provided. The sliding lid is opened by fitting into the connector, and the movable contact spring is projected, so that the window is closed even when the movable contact is live when the connector plug is not fitted. There is little risk of short-circuit and the movable contact spring is pushed into the window so that it is not damaged.

Also, by providing a height difference in the spring pressing portion of the slide lid into which each movable contact is pushed, so that the + side is contacted slowly, it is possible to secure the safety of the electronic circuit in the device. is there.

[Brief description of the drawings]

FIG. 1 is a plan view showing a plug portion according to an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a sectional view taken along line AA in FIG.

FIG. 5 is a vertical sectional side view showing a contact spring portion of the above.

FIG. 6 is an enlarged sectional view taken along line BB in FIG. 4;

FIG. 7 is a longitudinal sectional side view showing a fitted state of a plug fitting portion.

FIG. 8 is a circuit diagram of a plug section.

FIG. 9 is a perspective view showing a conventional example.

FIG. 10 is a cross-sectional view of the same contact portion.

[Explanation of symbols]

 A plug B video camera C power cord 10a box portion 10b insertion portion 11,31 flange 12 slide lid 12a projection 12b operating rod 13 window 14 movable contact spring 14a -side terminal 14b + side terminal 14c signal terminal 15 plug fitting portion 16 concave groove 17 Protrusion 17a Spring 18 Switch 19 Condenser 40 Mold Case 41 Slider 42 Coil Spring 43 Movable Contact Piece 50 Protruding Shaft 54 Fixing Base 55 Inclined Part 56 Contact Part 57 Spring Part Depressed Part 59 Corner Part

Claims (1)

(57) [Claims] 1. An apparatus to which power is supplied includes a plug fitting portion, a fixed contact is exposed on an inner wall surface of the plug fitting portion, and the plug fitting portion is provided along an exposed surface of the fixed contact. And a plurality of connector plugs that are slidably fitted into the connector plugs, and are urged in a projecting direction on a surface facing the fixed contact in a protruding direction, and are respectively connected to the + and-poles of the DC power supply. A movable contact spring made of a leaf spring, and a slide lid that reciprocates on a projecting side surface of the movable contact spring and urges the movable contact spring toward the retracted side with the spring, and inserts a connector plug into the plug fitting portion. , The slide lid is pushed in the opening direction so that the movable contact spring is protruded toward the fixed contact .
A step is provided at each movable contact spring pressing portion of the slide lid.
The connector plug into the plug
When the slide lid is slid in the opening direction
A movable contact spring connected to the positive pole side of each movable contact terminal
A power plug that can be protruded with a delay.