JPH0215267Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a power jack used for plug connection of a power adapter or the like.

(Prior Art) Conventionally, this type of power jack has been used to supply DC power via a power adapter when obtaining commercial power as an external power source for portable electronic devices such as radio cassette players, calculators, and IC radios. It is provided in the equipment.

Some conventional power jacks have a jack body with a plug insertion hole on the front and a lid on the back, and the lid has a conductive pin whose length and thickness meet specified standards. Some switch pieces have a movable contact piece that penetrates the plug and is separated from the fixed contact piece by contacting the outer conductor of the plug, and are arranged above and below the conductive pin.

(Problem that the invention aims to solve) However, the switch pieces, which are the components of conventional power jacks, are arranged above and below the conductive pins, which not only increases the size of the jack body, but also increases the size of the plug. Since the movable contact must come into contact with the external conductor of the plug and separate from the fixed contact each time it is inserted or removed, there is a limit to the shortening of the movable span of the movable contact. If the spring pressure of the upper and lower movable contact pieces is the same, the plug will be held down equally by the upper and lower movable contact pieces, and the plug will be in a neutral state with respect to the conductive pin, making it impossible to achieve stable contact. In addition, since the length of the conductive pin must meet the standard, there were various problems such as the inability to downsize the jack body.

The present invention was developed by focusing on these points, and by arranging a plurality of movable contact pieces at right angles to the conductive pin and front and back with respect to the plug insertion direction, the contact between the movable contact pieces is stabilized. The purpose of this invention is to provide a power jack that simultaneously solves the conflicting propositions of performance and miniaturization.

(Means for Solving the Problems) Therefore, in the present invention, a power jack is provided with a jack body having a plug insertion hole on the front plate, and a conductive pin disposed inside the jack body whose tip is led out near the plug insertion hole. , a plurality of switch pieces arranged in parallel in a direction perpendicular to the conductive pin;
Of the movable contact pieces adjacent to each other in this switch piece, the movable contact piece located on the back side contacts through a separator so as to open and close the switch in conjunction with the operation of the movable contact piece located on the plug insertion hole side. The configuration is as follows.

(Function) With this configuration, when the plug is inserted, the movable contact piece of the switch piece located on the plug insertion side is separated from the fixed contact piece, and in conjunction with this, the movable contact piece of the adjacent switch piece is fixed. Since it separates from the contact piece, it is possible to downsize the power jack while ensuring stable contact.

(Example) Next, an example of implementation of the present invention will be described with reference to the drawings. FIG. 1 is a side view of an embodiment of the present invention with the lid removed, FIG. 2 is a front view of the present invention, and FIG. 3 is a sectional view taken along the line -- in FIG. 1 is a power jack, 2 is a jack body 2 with a plug insertion hole 3 drilled in the front, one side of this is open, and slits 4, 5, 6 are formed on the bottom that communicate with the opening on the side. has been done. Of these, the slit 4 is for mounting the conductive pin 7, the slit 5 for mounting the first switch piece 8, and the slit 6 for mounting the second switch piece 9. Moreover, these switch pieces 8 and 9 are movable contact pieces 81 and 91, respectively.
and fixed contact pieces 82 and 92.

The conductive pin 7 has a terminal leg 7a protruding outward from the rear slit 4, and a contact portion 7b penetrating the inside of the jack body 2 back and forth. It is locked so that it does not shift in the vertical direction.

Further, the first movable contact piece 81 is inserted into the slit 5 with a spacer 10 made of an insulating material attached to its terminal leg 81a so as to be perpendicular to the conductive pin 7, and is locked in the first movable contact piece 81. An inclined guide piece 81c is integrally provided on the contact part 81b of the movable contact piece 81 so as to prevent the tip of the plug (not shown) from getting caught on the contact part 81b when the plug (not shown) is inserted. A first stationary contact piece 82, on which the free end of the first movable contact piece 81 approaches and separates, is attached to the first movable contact piece 81 and is inserted into and locked in the slit 5.

Further, the second movable contact piece 91 is arranged so as to be parallel to the first movable contact piece 8 with its terminal leg 91a.
Attach a spacer 11 made of insulating material to the slit 6.
A separator 12 made of an insulating material is attached to the contact portion 91b of the second movable contact piece 91 so as to protrude inside the first movable contact piece 81. and is in contact with the contact portion 81b of the first movable contact piece 81. A second stationary contact piece 92, with which the free ends of the second movable contact piece 91 move toward and away from each other, is attached to the second movable contact piece 91 and is inserted and locked into the slit 6.

Reference numeral 13 denotes a lid that closes the side opening of the jack body 2 after the conductive pin 7, movable contact pieces 81, 91, fixed contact pieces 82, 92, etc. are attached to the slits 4, 5, 6, respectively.

The power jack 1 constructed in this way has a conductive pin 7 in the slits 4, 5, and 6 of the jack body 2, and a first
After attaching the switch piece 8 and the second switch piece 9 separately, the lid 13 is placed over the side opening of the jack body 2, and the conductive pin 7, the first switch piece 8, and the second switch piece 9 are attached to the jack body. Make sure that it does not fall out from 2.

In use, the plug is inserted through the plug insertion hole 3, the internal electrode of the plug is brought into contact with the conductive pin 7, and the external electrode is brought into contact with the first movable contact piece 81 of the first switch piece 8. The contact between the first movable contact piece 81 and the first fixed contact piece 82 is separated. Therefore, the contact portion 8 of the first movable contact piece 81
1b is bent and the contact portion 91b of the second movable contact piece 91
is bent through the separator 12,
The first switch piece 8 and the second switch piece 9 are switched.

Note that the present invention prevents the conductive pin 7, first switch 8, and second switch 9 from falling out from the slits 4, 5, and 6 by engaging or welding the lid 13 over the side opening of the jack body 2. However, the lid 13 is not necessarily necessary.

(Effects of the invention) The present invention is constructed as described above, in which a plurality of switch pieces are arranged on one side of the jack body, and are arranged in parallel at right angles to the conductive pin that penetrates the inside of the jack in the front and rear directions. The movable contact pieces are brought into contact via an insulator, and the adjacent movable contact pieces are opened and closed in conjunction with the operation of the movable contact piece on the plug insertion side, so the movable contact piece is not connected to the conductive pin. By arranging the plug and the movable contact piece at right angles to each other, it is possible to downsize the jack body, and since the movable contact piece comes into contact with the plug from one side, the effect that the contact between the plug and the movable contact piece is stable can be obtained.

[Brief explanation of drawings]

FIG. 1 is a side view of an embodiment of the power jack of the present invention with the cover removed, FIG. 2 is a front view of the present invention, and FIG. 3 is a sectional view taken along the line -- in FIG. 3: Plug insertion hole, 7: Conductive pin, 8, 9: Switch piece, 81, 91: Movable contact piece, 12: Separator.

Claims (1)

[Scope of utility model registration request] In a power jack, the inner conductor of the plug contacts the conductive pin when the plug is inserted, the outer conductor of the plug contacts the movable contact piece of the switch piece, and the switch piece separates. A plurality of switch pieces are arranged in parallel in a direction perpendicular to the disposed conductive pin, and among the mutually adjacent movable contact pieces of the switch pieces, the movable contact piece located on the back side is located on the plug insertion hole side. A power jack characterized in that a switch is brought into contact via a separator so as to open and close a switch in conjunction with the operation of a movable contact piece.