JPS6217991Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement in a jack.

A suitably shaped jack body made of insulating material,
For conventional jacks, a metal contact piece bent into the desired shape is attached, and a cover member made of an insulating material is attached to the jack body for finishing. The contact piece was attached to the jack body by being press-fitted into the inside of the jack body.

Furthermore, when the contact piece is press-fitted into the inside of the jack body, a part of the inside of the jack body is scraped off by the edge of the contact piece, and shavings may remain inside the jack body. If this happens, shavings may become trapped in the connection area between the main part of the plug inserted into the jack body and the contact piece, or the connection area between the contact pieces, causing poor contact. Furthermore, by being attached to the jack body, the cover member mainly plays the role of positioning the contact piece within the jack body, but does not fix the contact piece within the jack body. Therefore, after long-term use, the contact piece becomes misaligned within the jack body, causing problems such as poor contact.

The present invention was devised in view of the above circumstances, and it is possible to easily attach the contact piece to the jack body, eliminate the generation of shavings that can cause poor contact as described above, and allow for long-term use. To provide a jack in which a contact piece does not become misaligned within the jack body even if the contact piece is moved.

An embodiment of the jack according to the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view showing the structure of the jack according to the present invention, and 1 and 1 are the jack main bodies made of a suitable insulating material (for example, plastic) and formed into a substantially open long box shape; They are integrally formed on both sides of the partition wall 1a in the same direction. The inside of the jack bodies 1, 1 has a contact piece 2 which will be described later.
1, 22, 23, 24, and 25 are provided. In addition, the jack body 1, 1
As shown in FIG. 2, a plurality of through holes 11a are provided at required locations on the bottom 11 of the housing, and round holes 12a, 12a for plug insertion are provided at required locations on the front wall 12 formed at one end in the longitudinal direction. It has been opened. Furthermore, a plurality of locking protrusions 13 are provided at predetermined locations on the outer peripheral edges of the jack bodies 1, 1, the outer surfaces of which are inclined and the lower ends of which protrude laterally.

Reference numerals 21, 22, 23, 24, and 25 are connecting terminals made of a suitable metal with good conductivity (for example, phosphor bronze) and bent into a predetermined shape, and are formed into a substantially linear shape as shown in FIG. connection terminals 21a, 22a,
23a, 24a, and 25a. and,
The through hole 11 is perpendicular to the insertion direction of the plug.
a to project the connecting terminals 21a to 25a to the outside of the jack body 1 as shown in FIG.
Connection terminals 21 to 25 are attached to predetermined locations within the jack body 1. Although only the contact pieces 21 to 25 in one jack body 1 are shown in FIG. 1, similar contact pieces 2 are also shown in the other jack body 1.
1 to 25 are attached, and the contact pieces 21 to 25 are in a connected state as shown in the electrical circuit diagram of FIG. 4 when no plug is inserted.

3 is made of a suitable insulating material (for example, elastic plastic), and includes a cover plate part 31 and a side plate part 3.
2 and 32, and has a substantially U-shaped cross section. A plurality of protrusions 31a and 31b are provided at required locations on the inner surface of the lid plate portion 31.
is formed in a protruding manner as shown in FIG. Projection 3
1a and 31b are formed so as to come into contact with required parts to be fixed, such as the base ends of the contact pieces 21 to 25, when the cover member 3 is attached to the jack bodies 1, 1 as shown in FIG. There is. Note that the protrusion 31a is spaced a suitable distance from the rear side plate portion 32'. In addition, square hole-shaped locking windows 32a are formed in the left and right side plate portions 32, 32 in association with the locking protrusions 13.

When the cover member 3 formed as described above is attached to the jack bodies 1, 1 in the direction shown by the dashed line arrow in FIG. 1, the cover member 3 is attached to the jack body 1 as shown in FIG. Installed. In this state, the locking protrusion 13 is fitted into the locking window 32a, so that the cover member 3 cannot be easily removed from the jack bodies 1, 1. Note that the cover member 3
When attaching the jack bodies 1, 1 to the jack bodies 1, 1 as described above, the rear side wall 11b (first
6) can be easily fitted between the protrusion 31a of the cover member 3 and the side plate part 32', so that even if the lower ends of the side plate parts 32, 32 receive repulsion when getting over the locking protrusion 13, The cover member 3 can be easily attached to the jack bodies 1,1. When the cover member 3 is attached to the jack bodies 1, 1 as described above, the protrusion 31a, for example, comes into contact with the required portion of the contact piece 25 to be fixed as shown in FIG.
1b also comes into contact with the required portions of the contact pieces 21-24 to be fixed, and the contact pieces 21-25 are fixed within the jack bodies 1, 1.

As is clear from the above description of one embodiment of the jack according to the present invention, since the connecting terminals are made to protrude outside the jack body through the through-holes formed in advance, the contact piece can be easily inserted into the jack body without being press-fitted. Easy to install, and does not generate shavings that can cause poor connections. In addition, the connection terminal protrudes outside the jack body through the through hole at right angles to the insertion direction of the plug, and the contact piece is fixed inside the jack body by bringing the protrusion into contact with the required part of the contact piece. This prevents the contact piece from becoming misaligned within the jack body even after long-term use.

In addition, in the above embodiment, the cover plate portion 3 of the cover member 3
Although only the protrusions 31a and 31b are formed to protrude from the inner surface of the fifth part, the present invention is not limited to this.
It may also be formed as shown by the two-dot chain line in the figure.

Further, the present invention can be applied not only to the so-called medium-sized jack as described above, but also to large-sized jacks, small-sized jacks, power supply jacks, and the like.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view showing the structure of the jack according to the present invention, Figure 2 is a bottom view of the jack body, and Figure 3 is a bottom view of the jack body.
The figure is a side view of the jack according to the present invention, Figure 4 is an electric circuit diagram showing the connection state of the contact piece, Figure 5 is a perspective view showing the inside of the cover member, and Figure 6 is a projection on the required part of the contact piece. FIG. 1, 1...Jack body, 11...Bottom, 11
a...Through hole, 12...Front side wall, 12a, 12a
... Round hole, 13 ... Locking protrusion, 21, 22, 2
3, 24, 25... contact piece, 21a, 22a, 23
a, 24a, 25a...connection terminal, 3...cover member, 31...cover plate section, 31a, 31b...projection, 32...side plate section, 32a...locking window.

Claims (1)

[Scope of utility model registration request] It is made of an insulating material and is shaped like a long box with no lid, and has a stepped shape on the inside for attaching the contact piece, a plurality of locking protrusions on the outer periphery, and a plurality of through holes at required locations on the bottom in the longitudinal direction. The jack body has a round hole for plug insertion at one end, and a plurality of contact pieces made of metal and bent into a predetermined shape.
The connection terminal includes a plurality of contact pieces protruding outward from the jack body through the through hole at right angles to the insertion direction of the plug, a cover plate portion and a side plate portion made of an insulating material, and a cover plate portion. a cover member having a plurality of protrusions protruding from the inner surface thereof in relation to the required portions of the contact piece, and a cover member having a plurality of locking windows in relation to the locking protrusions on one side plate portion; A jack characterized in that, when the cover member is attached to the jack body, the protrusion comes into contact with a predetermined portion of the contact piece to fix the contact piece.