JPS5913750Y2 - Jack part of 3-prong adapter plug - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the jack portion of a three-pole adapter plug which includes two movable contact pieces that are elastically operated in response to insertion and removal of the plug.

The object of the present invention is to connect two movable contact pieces provided in the jack part to each other while forming them into a U-shape that fits the plug in order to ensure elastic contact with the inserted plug. The purpose of assembly is to obtain a condition without any problems.

In order to achieve this purpose, the jack part of the three-pole adapter plug according to the present invention has two movable contact pieces that are elastically operated according to the insertion and removal of the plug. In the section, the above 2
The two movable contact pieces are formed into a substantially U-shaped plate shape that can elastically contact the plugs to be inserted while straddling the plugs, and also cross each other when viewed from the plug insertion/removal direction. It is characterized by being arranged in a non-contact state in the direction of separation.

Next, embodiments will be specifically described based on the drawings.

1, a metal tip 2, a ring 3, and a sleeve 4 are placed in a mold (not shown) in that order, a synthetic resin material is injected, and the tip 2, ring 3, and sleeve 4 are insulated from each other. In addition to assembling them in parallel in the axial direction, a socket fitting 40 is attached to the rear of the sleeve 4 to be threadedly connected to the threaded part of the sleeve C of another plug B to be inserted, so that it can be used for three poles. This is the main body of the assembled adapter plug A.

As shown in FIGS. 9 and 10, the inner cavity of the main body part 1 forms shaft holes 10 and 11 in which the inner diameter on the rear half side (on the right side of the drawing) is larger than the inner diameter on the front half side (on the left side in the drawing). The rear half side (right side in the drawing) of the shaft hole 11 is shaped like a jack part 13 into which the insertion part of another plug B is inserted through the rear opening 12.

In addition, a pair of axial guide grooves 14, 14 are formed on the inner wall surface of the shaft hole 10 on the front half side so as to face each other, and a pair of guide grooves 14, 14 in the axial direction are formed so as to face each other. A window hole 1 that opens to the inner wall surface of the ring 2 is located at the position.
4a is provided.

Reference numeral 5 denotes a cylindrical body made of an insulating material formed separately from the main body 1, and the guide groove 14.1 is formed on the front end side as shown in FIG.
The rear end side of the cylindrical body 5, which is the opposite side, is provided with a fitting protrusion 50 that fits with the fitting protrusion 50, and the rear end side of the cylinder 5 is cut out on both sides so that the rear end portion remains vertically in the shape of a tongue. An open space 51 is formed, and a through hole 52 penetrating back and forth is provided at the axial center portion.

6 inserts the cylindrical body 5 through the rear open opening 12 of the main body 1 with its fitting protrusion 50 facing first;
The tip pin is fixed when the fitting protrusion 50 is fully inserted into the guide groove 14, and the front end of the tip protrudes so as to face the shaft hole 10 on the front half side of the rear surface of the tip 2. The fitting hole 60 at the front end is press-fitted into the connecting rod 20 when the tip pin 6 is inserted into the through-hole 52 on the rear end side. A flange 61 is provided that abuts the rear end of the through hole 52 when inserted.

Reference numeral 7 denotes a movable contact piece connected to the chip 2 and arranged inside the jack part 13.

The movable contact piece 7 is formed by bending an elastically bending spring plate into a substantially U-shape as shown in FIG. An assembly hole 71 is opened in the center of the cylindrical body 5, and when inserting the chip pin 6 into the through hole 52 of the cylinder body 5, the rear end of the chip pin 6 is slightly larger in diameter than the assembly hole 71. The flange 6 of the shaft 62
1, and then forcefully press fit the holding cylinder 63 into the shaft part 62, so that the holding cylinder 63 and the flange 61 are fixed to the tip pin 6 so as not to move in the axial direction. In this state, the pair of contact pieces 70 and 70 are installed in the space 51 of the cylindrical body 5 so that they are arranged in parallel on the left and right as shown by the chain lines in FIG.

Reference numeral 8 denotes a movable contact piece connected to the ring 3 and disposed on the jack portion 13.

As shown in FIG. 5, the movable contact piece 8 has a cut ring-shaped body 80 formed with an elastically bending spring plate, and a pair of opposing plates at the rear (right side in the drawing). shaped contact piece 82
, 82 to form a substantially U-shape, and a pair of connecting portions 81 and 81 are provided in front of it (on the left side in the drawing).

The contact pieces 82, 82 of the movable contact piece 8 are located behind the rear end of the cylinder body 5 when the body part 80 of the movable contact piece 8 is fitted onto the outer peripheral surface of the cylinder body 5 along the axial direction. It comes to protrude a desired length toward the right side of Fig. 6, and in the protruding state, as shown by the chain line in Fig. 8,
A pair of contact pieces 70.70 of the aforementioned movable contact piece 7 and 18
They have different phases at 0° and occupy different state positions.

Further, a connecting portion 8 provided in front of the body portion 80 of the movable contact piece 8
1.81 is formed to a length facing the upper surface of the fitting protrusion 50 provided on the front surface of the cylinder body 5, and is
0 is fully inserted into the guide groove 14, the connecting portion 8
1.81 protrudes from the window hole 14a and connects with the inner wall surface of the ring 2.

Reference numerals 9 and 9a denote a guide tube fitted into the rear end of the sleeve 4, and its inner diameter is slightly larger than the diameter of the insertion portion of another plug B.

Next, to explain the function and effect, the jack part of the three-pole adapter plug according to the present invention, which is structured as described above, has two movable contact pieces 7 and 8 disposed inside the jack part.
are each formed into a substantially U-shape, and are held between the insertion portion of the insertion plug inserted into the jack portion 13 by a pair of contact pieces 70.70 and 82.82. The contact is ensured as the parts are attached and pressed together.

Since these two substantially U-shaped movable contact pieces 7 and 8 are arranged in a sue state with different phases from each other, it is possible to arrange the jack part 13 within the jack part 13 without making it longer. , the jack portion 13 can be made shorter.

[Brief explanation of drawings]

Fig. 1 is a cutaway side view of a three-pole adapter plug implementing this invention, Fig. 2 is a cutaway side view of the same as above, rotated by 90 degrees, Fig. 3 is an exploded perspective view of the connection terminal of the chip, Fig. 4 is a perspective view of a chip pin with a tip, a cylindrical body, and a movable contact piece connected to the chip assembled, Fig. 5 is a perspective view of a movable contact piece connected to a ring, and Fig. 6 is a perspective view of the same movable contact piece as above. Fig. 7 is a cut side view of the ring assembled to the cylinder, Fig. 8 is a perspective view of the cylinder, Fig. 9 is a partially cut perspective view of the main body, and Fig. 10 is the same as above. FIG. 11 is a cutaway side view of the sleeve, FIG. 11 is a cross-sectional view taken along line M-M in FIG. 10, and FIG.
13 and 14 are cut side views of the guide tube. Explanation of drawing symbols A: Adapter plug, B
...Plug, C...Sleeve, 1
...Main part, 1011 ...Shaft hole, 12
...Opening port, 13...Jack part, 1
4... Guide groove, 14 a... Window hole,
2... Chip, 20... Connecting rod,
3...Ring, 4...Sleeve, 40
... Socket fitting, 5 ... Cylindrical body, 50 ...
...Mating protrusion, 51...Space, 52...
...Through hole, 6...Chip pin, 60...
...Fitting hole, 61...Flange, 62...
...Shaft portion, 63...Holding tube, 7...Movable contact piece, 70...Touch piece, 71...Assembly hole, 8... ...Movable contact piece, 80...Body part,
81... Connection portion 82... Contact piece, 9, 9
a... Guide tube.

Claims (1)

[Scope of utility model registration request] In the jack part of a three-pole adapter plug, which has two movable contact pieces that are elastically operated in response to the insertion and removal of the plug, the two movable contact pieces are connected to the respective plugs to be inserted. Abbreviation U that can make elastic contact while straddling
A jack part in a three-pole adapter characterized in that it is configured in a dial shape and is arranged in a non-contact state so that they intersect with each other when viewed from the plug insertion/removal direction and SS in the plug insertion/removal direction.