JPH0128635Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a relay jack that electrically connects two 3-pole single-head plugs of different sizes and diameters by inserting them on both sides. To provide a relay jack that has a structure that is easy to assemble and can be manufactured at low cost.

In describing the embodiments of the present invention, first, a three-pole single-head plug to which the relay jack of the present invention is relay-connected will be described. As shown in the third middle figure, the three-pole single-head plug has three poles formed at the tip of the knob. 52 and 62 are intermediate sleeves provided in the middle, and 53 and 63 are sleeves provided at the rear, and the respective parts forming these three poles are insulated from each other.

Hereinafter, an embodiment of the relay jack of the present invention for connecting the two three-pole single-head plugs will be described with reference to the drawings.

The relay jack has a support piece 1 and a first terminal 7.
It is composed of a second terminal 11, a small-diameter metal tube 16, a large-diameter metal tube 17, two caps 20 and 23, and an external insulation coating part 30.

The support piece 1 is made of an insulating material, and has a small-diameter circumferential portion 2 formed on one side of its outer periphery and a large-diameter circumferential portion 3 formed on the other side. The divided pieces 1a and 1b can be split into two parts, and two bending grooves 4 are formed at intervals on the divided surfaces.
form 5.

The first terminal 7 has a bent part 8 formed in the middle thereof to be inserted into one of the bending grooves 4, and has contacts at both ends that contact the tips 51, 61 of the small diameter and large diameter three-pole single head plugs 50, 60. The parts 9 and 10 are arranged consecutively, and the bent part 8
is inserted into one bent groove 4, and one side on which the contact portion 9 that contacts the tip 51 of the small-diameter three-pole single-head plug 50 is continuously provided protrudes from the large-diameter circumferential portion 2 side, and the large-diameter The other side of the three-pole single-head plug 60 on which the contact part 10 that contacts the tip 61 is connected is made to protrude from the large-diameter circumferential part 3 and fixed to the support piece 1.

The second terminal 11 has a bending part 12 formed in the middle part thereof to be inserted into the other bending groove 5, and an intermediate sleeve 52 of the small-diameter and large-diameter three-pole single-head plugs 50, 60 at both ends.
The contact portion 13 is a series of contact portions 13 and 14 that are in contact with the contact portion 62, and the bent portion 12 is inserted into the other bent groove 5, and the contact portion 13 is in contact with the intermediate sleeve 52 of the small-diameter three-pole single-head plug 50. The small diameter circumferential part 2 is connected to one side where
The other side, on which the contact portion 14 that protrudes from the side and contacts the intermediate sleeve 62 of the large-diameter three-pole single-head plug 60 is connected, is made to protrude from the large-diameter circumferential portion 3 and is fixed to the support piece 1.

The small-diameter metal cylinder 16 has an inner diameter that is approximately equal to the outer diameter of the small-diameter circumferential portion 2 of the support piece 1;
The first terminal 7 and the second terminal 11, which fit into the small diameter circumferential portion 2 and protrude from the small diameter circumferential portion 2, are disposed at intervals on the outer periphery of each side portion.

The large-diameter metal cylinder 17 has an inner diameter that is approximately equal to the outer diameter of the large-diameter circumferential portion 3 of the support piece 1;
and overlaps one end of the small diameter metal cylinder 16,
This overlapping portion is electrically connected and disposed at intervals on the outer periphery of each other side of the first terminal 7 and the second terminal 11 protruding from the large diameter circumferential portion 3.

The electrical connection between the large diameter circumferential portion 3 and the small diameter circumferential portion 2 is as follows:
This can be done by tightly pressing the two together, by soldering, brazing, spot welding, caulking, etc.

The cap 20 has a through hole 21 into which a small-diameter three-pole single-head plug 50 is inserted, and is inserted into and fixed at the other end of the small-diameter metal cylinder 16, and the inner wall of the through-hole 21 has a small-diameter three-pole single-head plug. 50 sleeve 53.

The cap 23 has a through hole 24 into which a large-diameter three-pole single-head plug 60 is inserted, and is inserted and fixed into the other end of the large-diameter metal tube 17. It contacts the sleeve 63 of the single-pole plug 60.

Reference numeral 30 denotes an external insulating coating portion molded around the outer circumferences of the small diameter metal tube 16, the large diameter metal tube 17, and the two caps 20 and 23 at both ends.

The relay jack having the above configuration is, for example,
First, by facing the divided pieces 1a and 1b and inserting the bent parts 8 and 12 into the bent grooves 4 and 5,
The first terminal 7 and the second terminal 11 are fixed to the support piece 1.

Next, the small diameter circumferential portion 2 of the support piece 1 thus constructed is
A small diameter metal tube 16 with a cap 20 fixed to the other end.
One end of the small diameter metal tube 16 is inserted into the first terminal 7.
and are arranged at intervals on the outer periphery of one side of the second terminal 11. At this time, since a step is formed between the small-diameter circumferential portion 2 and the large-diameter circumferential portion 3 of the support piece 1, if one end face of the small-diameter metal cylinder 16 is abutted against this step, the support piece can be easily removed. The small diameter metal tube 16 is positioned relative to the base 20,
The contact portion 9 of the first terminal 7 and the contact portion 13 of the second terminal 11 are positioned. Next, one end of the large-diameter metal tube 17 with the base 23 fixed to the other end is inserted into the large-diameter circumferential portion 3 of the support piece 1, so that one end of the large-diameter metal tube 17 is connected to one end of the small-diameter metal tube 17. The large diameter metal tube 17 is connected to the first terminal 7 and the second terminal 1 so as to overlap with each other on the outside of the section.
1 at intervals on the outer periphery of the other side.
At this time, the small diameter metal tube 1 already attached to the support piece 1
Using an appropriate jig as a reference, the other end of the large-diameter metal tube 17, that is, the outer end surface of the cap 23, is used as a reference, and the dimension from this reference surface to the insertion side end surface of the large-diameter metal tube 17, that is, the end surface of one end, is regulated to a predetermined value. By this,
The base 23, the contact portion 10 of the first terminal 7, and the contact portion 14 of the second terminal 11 are positioned, allowing easy assembly. After that, the overlapping ends of the small-diameter metal tube 16 and the large-diameter metal tube 17 are soldered, brazed, or
Electrically connect and connect and fix by spot welding or caulking. After the conductive terminals are assembled in a predetermined relationship in this manner, the outer insulation coating 30 is molded on the outside.

As shown in FIG. 3, when a three-pole single-head plug 50 with a smaller diameter is inserted into one side of the relay jack and a three-pole single-head plug 60 with a larger diameter than the other is inserted, the first terminal 7 is connected to both ends. Plug tips 51, 61
, the second terminal 11 is connected to the intermediate sleeve 5 of both plugs.
2, 62, the caps 20, 23, the small diameter metal tube 16 and the large diameter metal tube 17 are the sleeve 5 of both plugs.
3 and 63, both plugs are electrically connected for each corresponding pole.

As mentioned above, in the relay jack of the present invention, the first terminal and the second terminal that connect the corresponding poles of the two plugs disposed inside and to be relayed are integrally formed, so there is no possibility of failure or failure. A small-diameter metal tube is formed on the outer periphery of the supporting piece that fixes the first terminal and the second terminal, and is divided into two parts, with a small-diameter circumferential part and a large-diameter circumferential part. Since the large-diameter metal tube is inserted and fixed, it can be assembled smoothly from the inside, and the positioning of these metal tubes is also easy.As the number of parts is small and the structure is simple, assembly is easy and inexpensive. It is possible to manufacture

In addition, since the metal tube is divided into small diameter and large diameter ones, if they are made into one diameter, that is, compared to using one large diameter one, the contact with the sleeve of the small diameter 3-pole single-head plug will be lower. The cap can be made smaller, the amount of materials used can be reduced, and material costs can be saved.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the electrode portion, FIG. 2 is a sectional view of the relay jack, and FIG. 3 is a sectional view of the relay jack in use. 1...Support piece, 2...Small diameter circumferential part, 3...Large diameter circumferential part, 4, 5...Bending groove, 7...First terminal, 8
...Bending part, 9, 10...Contact part, 11...Second
Terminal, 12... bending part, 13, 14... contact part,
16...Small diameter metal tube, 17...Large diameter metal tube, 20
...cap, 21...through hole, 23...cap, 24...
...Through hole, 30...External insulation coating, 50...Small diameter 3-pole single-head plug, 51...Tip, 52...Intermediate sleeve, 53...Sleeve, 60...Large-diameter 3-pole single-head plug , 61...chip, 62...intermediate sleeve, 63...sleeve.

Claims (1)

[Scope of utility model registration request] An insulating material in which one side of the outer periphery is formed as a small-diameter circumferential part 2 and the other side is formed as a large-diameter circumferential part 3, split into two parts, and two bent grooves 4 and 5 are formed at an interval on the split surface. a support piece 1 consisting of a support piece 1, and a contact portion 9 which fits a bent portion 8 formed at the intermediate portion into one of the bent grooves 4 and contacts a tip 51 of a small-diameter three-pole single-head plug 50 at the end thereof.
One side of the large diameter circle protrudes from the side of the small diameter circumferential part 2, and the other side of the large diameter circle has a contact part 10 that contacts the tip 61 of the large diameter three-pole single-head plug 60. The first terminal 7 is fixed to the support piece 1 while protruding from the peripheral part 3 side, and the bent part 12 formed in the middle part is inserted into the other bent groove 5 to form a small-diameter three-pole single terminal at the end. One side of the head plug 50 on which the contact portion 13 that contacts the intermediate sleeve 52 is arranged is made to protrude from the side of the small diameter circumferential portion 2, and a large diameter 3 is provided at the end.
A second terminal 11 is provided with a contact portion 14 that contacts the intermediate sleeve 62 of the pole single-head plug 60, and the other side of the second terminal 11 is fixed to the support piece 1 with the other side protruding from the large diameter circumferential portion 3 side, and one end is fixed to the support piece 1. The first terminal 7 fits into the small diameter circumferential portion 2 of the support piece 1 and protrudes from the small diameter circumferential portion 2.
and a small-diameter metal cylinder 16 disposed at intervals on the outer periphery of each side of the second terminal 11;
The first terminal 7 and the second terminal 11 are arranged at intervals on the outer periphery of the other side of each of the first terminal 7 and the second terminal 11, which overlap on one end, electrically connect the overlapped part, and protrude from the large diameter circumferential part 3. A large-diameter metal cylinder 17 is provided, and a small-diameter three-pole single-head plug 5 is inserted into the through-hole 21 by making a through-hole 21.
0 sleeve 53 and is inserted and fixed into the other end of the small diameter metal cylinder 16, and a sleeve of a large diameter three-pole single head plug 60 with a through hole 24 and inserted into the through hole 24. 62 and the large diameter metal cylinder 6
0, and an external insulating coating part 30 molded on the outer periphery of the small-diameter metal tube 16, the large-diameter metal tube 17, and the two caps 20, 23 at both ends. A relay jack.