JPH03706Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to a jack using a linear contact piece.

``Prior art'' In a conventional jack, a ground contact piece, a tip contact piece, and a ring contact piece are installed through the back opening of a cylindrical body made of insulating material, and then the back opening of the cylindrical body is closed with a lid. Each assembled contact piece was held in the main body. In this way, the conventional jack has 5 parts.
In addition, since the three contact pieces were assembled one by one into the main body, the assembly work was time-consuming.

The purpose of this invention is to reduce the apparent number of parts,
Another object of the present invention is to provide a jack that is easy to assemble.

``Means for solving the problem'' According to this invention, an opening is formed at the rear of the cylindrical body having a plug insertion/removal hole at one end, and the contact piece holder is fitted into the opening to close the opening. The armature holder is made of a molded article of an insulating material, and intermediate portions of a plurality of linear armatures are integrally held in the armature holder by insert molding. One end of the contact piece is inserted into the cylindrical main body to form the contact piece main body, and the other end is used as a terminal projecting to the outside of the cylindrical main body.
Since the plurality of contact pieces are integrally held by the contact piece holder in this way, the contact pieces and the contact piece holder appear to be one part, and the contact piece holder is fitted into the opening of the main body. In this way, the jack can be constructed in a so-called one-touch manner, and there is no need to attach the contact pieces to the main body one by one, which greatly simplifies the assembly process.

``Example'' An example of this invention will be described below with reference to the drawings. As shown in FIG. 1, the body 11 is a cylindrical main body 1
2 and a contact piece holder 13, the cylindrical body 12
(See also Fig. 2) has a plug insertion/removal hole 14 at one end, a rectangular opening 15 formed at the rear, in this example, the back, and the contact piece holder 13 is fitted into the opening 15. 15 is blocked. Square holes 18 are formed in the rear ends of the left and right side plates 16 and 17 of the main body 12, respectively, and claws 19 formed in the left and right sides of the contact piece holder 13 are engaged with the square holes 18 to prevent them from coming off. be done.

As shown in FIGS. 2 and 3, guide table parts 23 and 24 extending back and forth are integrally formed at the center of the top plate 21 and bottom plate 22 of the main body 12. The surface is located on a cylindrical surface extending rearward from the cylindrical inner circumferential surface of the plug insertion/removal hole 14, and the inserted plug is guided.

Further, in this example, a cut groove 25 is formed from the center of the rear side of the upper plate 21 toward the front. As shown in FIGS. 1 and 2, cutouts 26 and 27 are formed on both sides of the rear end surface of the bottom plate 22. As shown in FIGS. As shown in FIGS. 1 and 3, a mounting claw 28 for mounting this jack and a mounting plate (printed wiring board, etc.) is integrally projected downward on the bottom surface of the bottom plate 22, and the mounting plate and the main body 12 are integrally projected. The protrusion 29 that provides the interval between the bottom plate 2
2 is integrally formed.

The main body 12 and the contact piece holder 13 are each constructed as a molded article of synthetic resin material.

As shown in FIG. 4, the contact piece holder 13 has a plurality of linear contact pieces 31, 32, 33 whose middle portions are inserted into the contact piece holder 13 and held together. One end of each of these linear contact pieces 31, 32, 33 protruding from the contact piece holder 13 serves as a contact piece main body 34, and the other ends serve as terminals 35, 36, 37. In this example, the contact pieces 31, 32, 33 are attached to the contact piece holder 13.
The contact piece main bodies 34 extending vertically within and protruding from the top surface thereof are bent and extended forward, and the terminals 35, 36, and 37 protruding from the bottom surface are extended downward. The terminals 35 and 37 are fitted into the notches 26 and 27, respectively, and protrude below the body 11, as shown in FIG.

The three contact pieces bodies 34 are inserted into the cylindrical body 12 as shown in FIG. Contact pieces 31, 32, 33
The contact piece main bodies 34 have almost the same shape, and include an extension part 34a that extends forward approximately parallel to the axis of the plug insertion/removal hole 14, and a direction intersecting the plug insertion/removal direction from the extended end thereof. contact portion 34b extended to
Therefore, the extension portion 34 of these contact pieces 31, 33
As shown in FIG. 3, the contact portions 34b are located close to both side surfaces of the guide base portion 23, and the ends of both contact portions 34b are located close to both sides of the guide base portion 24. Contact piece 31
The contact portion 34b is located further forward than the contact portion 34b of the contact piece 33. The extension part 34a extending forward of the contact piece 32 is the extension part 34 of the other contact pieces 31 and 33.
The end of the extended portion 34 a is a contact portion 34 b that is bent in a V shape toward the axis of the plug insertion/removal hole 14 , and the end 34 c is shorter than the cutout of the upper plate 21 . It is located within the groove 25.

When the plug 41 is inserted sufficiently deeply into the plug insertion/removal hole 14 (inserted into the normal connection position), the ring-shaped recess 43 of the tip contact 42 of the plug 41 is inserted as shown in FIGS. 5 and 6. The contact portion 34b of the contact piece 32 is elastically engaged with the contact portion 34b of the contact piece 33.
The positions of these three contact parts 34b in the front-rear direction are selected so that the contact part 34b of the contact piece 31 contacts the peripheral surface of the ground contact 45 located further in front of the ring contact 44.

Note that the cross-sectional shape of the linear contact pieces 31, 32, and 33 may be either round or square. As shown in FIG. 7, elastic metal wires 46, 47, 48 to become these contact pieces
are arranged parallel to each other while maintaining the relative positions of the holding parts of the contact pieces 31, 32, 33, and in this state, the contact piece holder 13 is placed so that these elastic metal wires 46, 47, 48 are located inside. molded. The contact piece holder 13 is placed on the elastic metal wires 46, 47, 48 at appropriate intervals.
is molded, and an elastic metal wire 46,
After cutting 47, 48, the elastic metal wire 46,
A contact piece holder 13 holding contact pieces 31, 32, 33 shown in FIG. 4 by bending the contact pieces 47, 48.
get. By fitting this contact piece holder 13 into the opening of the cylindrical body 12, the jack can be assembled in a so-called one-touch operation.

"Effects of the invention" As described above, in the jack of this invention, the linear contact pieces 31, 32, 33 are molded and held in the contact piece holder 13, and these can be used as one component. The jack is completed by simply fitting it into the cylindrical body 12 so as to close the opening, and the assembly process is extremely simple. Linear contact pieces 31, 32, 33
As described above, the contact piece holder 13 holding the contact piece is automatically formed by insert molding on the three elastic metal wires 46, 47, 48, and the cutting and bending of the contact piece can be easily automated. It is much easier to manufacture than conventional jacks, in which the contact pieces are assembled one by one into the body.

Furthermore, when the linear contact pieces 31 and 33 are fully inserted into the plug insertion hole 14 as shown in FIG.
When viewed from the front, the ends 34d of each contact portion 34b elastically contact the inner wall of the cylindrical body 12, and each contact portion 3
4b contacts the circumferential surfaces of the ring contact 44 and the ground contact 45 of the plug 41 with sufficient contact pressure to obtain good contact. In other words, the amount of displacement of the end 34d by the plug is greater than the amount of displacement caused by the plug.
The distance between the inner wall and the opposing inner wall may be made slightly smaller. In addition, the shapes of the contact pieces 31 and 33 are extremely simple and easy to manufacture. By making the connecting portions of the extension portions 34a of the contact pieces 31, 33 and the contact portions 34b oblique in the plan view as shown in FIG. It may be made so that it is difficult to catch on the contact pieces 31 and 33 and can be inserted and removed smoothly.

In the above description, the direction in which the terminals 35, 36, and 37 are led out may be the plug insertion/removal direction. As shown in FIG. 9, the L-shaped contact piece 51 is attached to the cylindrical main body
It is also possible to add a switch circuit by holding the contact piece 51 and the contact piece 32 in contact with the upper plate 21 and the side plate 17, and opening and closing the contact piece 51 and the contact piece 32 are controlled by inserting and removing a plug. Further, in this example, the piece 33 is omitted.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the jack of this invention, Fig. 2 is a vertical sectional perspective view of the cylindrical body 12, Fig. 3 is a sectional view taken along line AA in Fig. 1, and Fig. 4 shows the contact piece. FIG. 5 is a side view of the cylindrical body 12 of the jack shown in FIG. 1, showing the relationship between the plug and the contact piece. FIG. 6 is a side view showing the relationship between the contact piece and the plug. FIG. 7 is a plan view used to explain the manufacture of the contact piece holder 13 holding the contact piece, and FIG. 8 is for explaining the shape of the contact piece, where A is a plane. 9B is a side view, and FIG. 9 is a perspective view showing an example of a jack with a switch circuit. 11: Body, 12: Cylindrical main body, 13: Contact piece holder, 14: Plug insertion/removal hole, 15: Opening, 23,
24: Guide table part, 25: Cut groove, 31, 32, 3
3: Linear contact piece, 34: Contact piece body, 35, 36, 3
7: Terminal, 34a: Extension part, 34b: Contact part, 3
4d: End (pressure part).

Claims (1)

[Scope of claim for utility model registration] Made of insulating material, with a plug insertion/removal hole at one end,
A cylindrical body with an opening at the rear, a contact holder made of a molded insulating material fitted to the main body so as to close the opening of the main body, and an intermediate part formed by insert molding in each of the contact holders. A jack comprising a plurality of linear contact pieces held together by a plurality of linear contact pieces, one end of which is inserted into the cylindrical body as a contact main body, and the other end of which is protruded from the cylindrical body as a terminal.