JP2735995B2 - Pin jack - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin jack used for a terminal for transmitting video, audio and the like between a television receiver and an electric device such as a video recorder, and a housing structure thereof.

[0002]

2. Description of the Related Art As shown in FIG. 6, for example, a terminal section of an electric device is provided with a pair of audio pin jacks Q, Q and a video pin jack Q, and a pin plug P is connected to the pin jack Q. Are inserted as shown by the arrows to connect the electrical devices.

[0003] The pin plug P has a pin terminal 7 on a central axis in a cylindrical terminal 6, and an insulating coating 8 is provided around the pin terminal 7.

On the other hand, the pin jack Q has a cylindrical portion 2 on one surface of the insulating housing 1, and the cylindrical portion 2 has a cylindrical terminal 6 of the pin plug P fitted on an outer surface thereof, and a pin terminal 7 inside thereof. Is inserted. A ring terminal 3 is fitted on the outer surface of the cylindrical portion 2, and an internal terminal 4 is provided in the insulating housing 1 so as to contact a pin terminal 7 inserted into the cylindrical portion 2.

The terminals 3 and 4 of the pin jack Q are connected to the circuit of the printed board R by soldering, and the connection is made by penetrating the legs 3a and 4a of the terminals 3 and 4 through the board R.

The pin jack Q has a fork terminal in which the internal terminal 4 is formed in a fork shape, and a two-pole connection in which the pin terminal 7 of the pin plug P is inserted between two forks of the fork terminal (FIG. 4). ), The internal terminal 4 is used as a switch terminal, the switch terminal is used as a fixed contact and a movable contact, and when a pin terminal is inserted, the movable contact is pushed by the pin terminal to actuate (turn off) the switch terminal 2.
Some have pole connections (see FIG. 3).

Conventionally, these two types of pin jacks Q are formed of housings having different structures.
There is a problem in terms of cost, and it is desired to use both of them in one housing.

The present invention has been made in view of the above points, and has as its object to enable the above two types of pin jacks to be constituted by one housing.

[0009]

According to the present invention, there is provided a pin jack having the above-mentioned cylindrical portion for a ring terminal and having an internal terminal for connection with a pin terminal. In the housing structure of (1), a through-hole is formed in the insulating housing so that the foot of the ring terminal is inserted therethrough and protrudes from the other surface of the housing. The fork terminal insertion hole in the insertion direction is formed, and the switch terminal fixed contact piece and the movable contact piece insertion hole in the insertion direction are also formed from the other surface of the housing. The one insertion hole is configured to be inside the movable contact insertion hole.

In the housing having this configuration, the fixed contact piece and the movable contact piece are inserted into the two insertion holes for the switch terminal, and the contact portion of the movable contact piece is brought into contact with the fixed contact piece, and then the pin terminal of the pin plug is inserted. The structure of the pin jack according to the present invention can be provided to reach the insertion area.

[0011]

The housing structure according to the present invention configured as described above is a pin jack that performs two-pole contact by inserting a ring terminal into a cylindrical portion and inserting a fork terminal.
On the other hand, by inserting a fixed contact piece and a movable contact piece of the switch terminal instead of the fork terminal, it becomes a pin jack that performs two-pole connection with a switching action.

When the pin terminal of the pin plug is inserted into the cylindrical portion, the switching action is performed by pushing the contact portion of the movable contact piece away from the fixed contact piece by the pin terminal.

[0013]

In this embodiment, as shown in FIG. 1, an insulating housing 11 is constituted by a pin jack housing main body 11a and a mounting housing 11b. As shown by arrows in FIG. The claw 1 of the mounting hole 11c is fitted to the mounting hole 11c of the mounting hole 11c.
1c 'is locked to the step 11a' of the main body 11a and becomes integral with the mounting housing 11b (see FIG. 5). If the claws 11c 'are bent outward, the main body 11a can be removed. The insulating housing 11 (11a, 11b) is an integrally molded product made of a heat-resistant resin such as an ABS resin.

As shown in FIGS. 1 and 2, the housing main body 11a is provided with a ring terminal 30, a fork terminal 40, and a switch terminal 50 (movable contact piece 51, fixed contact piece 52). It has a cylindrical portion 12 on one surface, and the ring terminal 30 is fitted into the cylindrical portion 12, and the protrusion 12a of the main body 11a is fitted into the hole 30b to prevent the ring terminal 30 from coming off.

At this time, the color-coding ring 18 (normally, red,
The type of the pin jack Q, for example, for audio is clarified by fitting white, yellow) to the tip of the cylindrical portion 12 and exposing the pin jack Q from the center hole of the ring terminal 30. By stopping the ring 18, the main body 11a itself can be color-coded.

The rectangular column of the housing body 11a has a recess 13 formed on the side surface thereof, through which the foot 30a of the ring terminal 30 passes. Contact piece 51, fixed contact piece 5
Two insertion holes 14, 15, 16 are formed (see FIGS. 1 to 4). The fork terminal insertion hole 14 is located on the center axis of insertion of the pin plug P, and the switch terminal insertion holes 15 and 16 are located on the opposite side of the leg 30a recess 13 of the ring terminal 30.

Submerged steps 14a, 15a, 16a are formed in the respective insertion holes 14, 15, 16, and each terminal (contact piece) 4 is formed.
When the 0, 51, 52 are inserted, the claws 40b, 51b, 52b are moved to the step portions 14a, 15 as shown in FIGS.
The terminals (contact pieces) 40, 51, and 52 are locked by being locked to the a and 16a. As described above, it is excellent in terms of workability that the terminals (contact pieces) 40, 51, and 52 including the ring terminal 30 can be attached to the housing 11 by being inserted in the same axial direction.

The housing body 11a is formed with a cutout 17 extending from the side surface to each of the insertion holes 14, 15, and 16 and opening to the other surface. The depth of the notch 17 is the same up to the insertion holes 15 and 16, and the insertion hole 14 is shallower than that (see FIGS. 3 and 4).

The housing 11 has a pin jack Q for making a two-pole connection between the ring terminal 30 and the fork terminal 40.
_1, which the pin jack Q ₂ to which performs two-pole connection with cutoff by ring terminal 30 and the switch terminal 50 may be configured respectively, the former is constructed as shown in FIG. 4, the latter is configured as shown in Figure 3 You.

In the latter pin jack Q ₂ , the contact portion 51 b of the movable contact piece 51 of the switch terminal 50 is connected to the fixed contact piece 5.
After contacting the pin 2, the pin plug P has reached the insertion area of the pin terminal 7, and when the pin terminal 7 is inserted, the movable contact contact portion 51a is pushed out as shown by a chain line in FIG. Leave 12 When the pin terminal 7 is pulled out, it returns with elasticity as shown by the solid line. On the other hand, the former pin jack Q ₁ has the pin terminal 7 connected to the forked terminal 4 of the fork terminal 40.
0c. In both cases Q ₁ and Q ₂ , the cylindrical terminal 6 of the pin plug P fits on the outer surface of the ring terminal 30.

As shown in FIG. 5, the mounting housing 11b has a required number of mounting holes 11b formed at required positions, and is mounted on the printed circuit board R through a tapping screw through a tapping portion 11d, for example. Its terminals 30, 40, 50
(51, 52) each leg 30a, 40a, 51a, 52a
Passes through the substrate R and is soldered to the circuit.

[0022]

The present invention is configured as described above.
With one housing, it is possible to obtain a two-pin connection or a two-pin connection pin jack with a switching action. In addition, the pin jack of the two-pole connection with the switching action has a new configuration.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment.

FIG. 2 is a cutaway perspective view of a main part of the embodiment.

FIG. 3 is a sectional view for explaining the operation of the embodiment.

FIG. 4 is a sectional view for explaining the operation of the embodiment.

FIG. 5 is an explanatory view of mounting the embodiment.

FIG. 6 is a perspective view of a main part of a conventional example.

[Explanation of symbols]

P Pin plug Q, Q ₁ , Q ₂ pin jack R Printed circuit board 6 Cylindrical terminal 7 Pin terminal 8 Insulation coating 1, 11 Insulated housing 11a Housing body 11a 'Stepped portion 11b Mounting housing 11c Mounting hole 11c' Claw 12 Cylindrical portion 13 Concave portion 14 Insertion hole for fork terminal 15 Insertion hole for switch terminal movable contact 16 Insertion hole for switch terminal fixing contact 17 Notch 18 Color-coded ring 30 Ring terminal 30a Ring terminal foot 40 Fork terminal 40a Fork terminal foot 40c Fork terminal Forked part 50 Switch terminal 51 Switch terminal movable contact piece 51a Switch terminal movable contact piece foot 51c Switch terminal movable contact piece contact part 52 Switch terminal fixed contact piece 52a Switch terminal fixed contact foot

Claims (2)

(57) [Claims] 1. A pin plug P having a pin terminal 7 is connected on a central axis in a cylindrical terminal 6, and a cylindrical portion 12 is provided on one surface of an insulating housing 11. The cylindrical portion 12 has the pin plug P on its outer surface. Cylindrical terminal 6
The pin terminal 7 is inserted into the inside, the ring terminal 30 is fitted on the outer surface of the cylindrical portion 12, and the fork terminal 40 and the switch terminal 50 are provided in the insulating housing 11. The foot 3 of the ring terminal 30 is provided on the insulating housing 11.
0a is inserted and the through-hole 13 protrudes from the other surface of the housing.
Is formed, and the fork terminal insertion hole 14 is formed in the insertion direction from the other surface of the insulating housing 11 to the insertion area of the pin terminal 7 in the cylindrical portion 12. Insertion hole 1 for fixed contact piece 52 for switch terminal and movable contact piece 51 in insertion direction
6. A housing structure for a pin jack, characterized in that the insertion holes (6) and (15) are formed, and the insertion hole (16) for the fixed contact of the switch terminal (50) is inside the insertion hole (15) for the movable contact. 2. A fixed contact piece 52 and a movable contact piece 51 are respectively inserted into both insertion holes 15 and 16 for the switch terminal 50 of the housing according to claim 1, and a contact portion 51c of the movable contact piece 51 is fixedly connected. After contacting the piece 52, the pin terminal 7
The pin jack is characterized by reaching the insertion area.