JPH0212696Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a jack, and more particularly, to an improvement of a jack incorporating a slide switch.

Conventionally, a slide switch has been integrated into a jack so that the switch can be turned on and off in conjunction with the insertion and removal of a plug. The structure of such a jack with a built-in slide switch is such that the jack body is provided with a clip holder that slides under pressure when a plug is inserted, and a biasing means such as a coil spring that automatically returns the clip holder when the plug is removed. A configuration is adopted in which the switch is activated in conjunction with the insertion and removal of the plug.
It is designed so that it can be turned on and off.

However, since it is necessary to incorporate a biasing means for automatically returning the clip holder in a jack with such a configuration, the cost increases due to an increase in the number of parts and the complexity of the assembly process. Since the holder is biased in the plug removal direction, the plug removal force against the clip holder is reduced.

This invention was made in view of the above drawbacks,
Insertion of the plug without any biasing means,
Follow the removal and turn the slide switch ON-OFF
The purpose is to eliminate the above-mentioned drawbacks by doing so.

In order to achieve such an object, the present invention provides a jack case into which a plug is inserted, a plurality of contact pieces arranged in the plug insertion direction of the jack case so as to contact the plug inserted into the jack case, and a plurality of contact pieces inside the jack case. A jack having a clip holder disposed on a plug insertion path and moved in the direction of insertion of the plug by being pushed by the tip of the plug inserted into the jack case, the jack case having a clip holder arranged in the direction of movement of the clip holder. A plurality of switch contact pieces are arranged in parallel, and the clip holder is elastically deformed when the plug is inserted into the jack case to support the constriction of the tip of the plug, and when the plug is removed, the clip holder follows the plug and returns to its original position. forming a support part to
The clip holder is also provided with a clip that slides on the switch contact piece as the clip holder moves and comes into contact with the switch contact piece to be electrically connected.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 8.

In the figure, 1 is a jack case, 2 is a clip holder which is the main point of the present invention, 3 is a contact assembly, and 4 is a shield plate.

The jack case 1 is mainly composed of a box-shaped part with an open top surface, and a cylindrical part 11 for inserting a plug is formed in the center of one side wall of the box-shaped part, and a contact assembly is formed in the side wall adjacent to the cylindrical part 11. A plurality of pairs of L-shaped engaging pieces 12 are formed for positioning and holding the lead portions hanging from the lead portion 3 . The box-shaped part has a plug guide part 13 formed on the side where the cylindrical part 11 is formed, and a slide switch part 14 which slidably accommodates the clip holder 2 in the remaining part. Here, the plug guide portion 13 has approximately the same inner diameter as the cylindrical portion 11, and communicates with the cylindrical portion 11 by penetrating the one side wall.
Furthermore, a recess 15 for positioning the contact assembly 3 is formed at a predetermined position on the upper surface. Further, the slide switch portion 14 has a substantially semi-cylindrical recessed center portion, and a groove 16 for guiding the clip holder 2 is formed across the recessed portion. A recess 17 is formed for this purpose. Note that a thread is formed on the outer periphery of the cylindrical portion 11.

The clip holder 2 has a width that allows it to fit into the slide switch portion 14 without wobbling, and has a hanging portion 21 formed at a predetermined position on the lower surface to engage with the groove 16, and a long hole 22 formed on the upper surface. A clip 23 is inserted. And plug guide part 1
The third side end portion is formed into a support portion 24 that engages with the constricted portion of the plug tip, and the portion following the support portion 24 is formed into a plug receiving portion 25 that substantially follows the plug tip, and further includes a clip holder. A protrusion 26 for a click stop is formed at a predetermined position on the side wall of No. 2 to engage with the recess 17.

The support portion 24 is made of a suitable material such as synthetic resin so that it can be elastically deformed when the plug is inserted or removed.

The contact assembly 3 has a leg portion 31 that engages with the recess 15 at a predetermined position on the lower surface of a base portion 38 made of an electrically insulating material such as synthetic resin, and a plug guide portion 13.
A cutout portion 32 is formed directly above the slide switch portion 14 and a through hole 33 is formed directly above the clip 23, and a plurality of lead portions 34 are formed.
is suspended downward from the side wall. Two of these lead parts 34 are arranged in parallel to each other so that the base parts are disposed in the insertion direction of the plug.
2, and the center part is bent downward and protrudes downward to form a ground contact piece 3.
5 and the ring contact piece part 36, and the other one protrudes slightly downward into the through hole 33 directly above the slide switch part so that the base part is disposed in the plug insertion direction, and the tip part is formed in the plug insertion direction. The tip contact piece 37 is a curved portion that engages with the constriction of the tip.
The remaining lead portions 34 are formed in the switch contact portions 34A so that the base portions of half of each protrude downward into the through holes 33 directly above the clip 23 and can be hung down to selectively contact the clip 23. has been done.

The shield plate 4 is a flat plate material that can cover the upper surface of the contact assembly 3, and mounting legs 41 are vertically disposed on the outer surface of the flat plate that can cover the upper surface of the contact assembly 3. By bending the lower part of the legs 41 inward, the contact assembly 3 can be fixed. It is formed so that it can be connected to the jack body 1 in a sandwiched state.

Next, a method for manufacturing the contact assembly 3 will be explained with reference to FIG.

A predetermined number of lead portions 34 are integrally formed by punching a metal plate and, if necessary, pressing, and are connected to each other to form an integrated state.
That is, the respective lead portions 34 are connected to each other at the portions projecting outward from the base portion 38, and the ground contact portion 35, ring contact portion 36, and tip contact portion 37 are embedded and held in the base portion 38. The remaining lead portions 34 are also connected to each other at portions embedded in the base portion 38 as required. Then,
If the metal plate is made of a material other than plating or cladding, hoop plating is applied to one or both sides. Thereafter, synthetic resin is integrally insert-molded to embed and hold each lead portion 34.
However, the connecting portion 4 of the insert-molded base 38
Punching holes 46, 47, 48, 49, 53 are provided at positions corresponding to 2, 43, 44, 45, 52.
(Only the position of the punching hole 53 is shown in FIG. 1.) After forming the connecting portions 42, 43, 44, 45, 50, 52 and the outer connecting portion 51, After that, the manufacturing of the contact assembly 3 is completed by bending the lead portion 34 and the base switch contact piece portions 34A. In the above case, a through hole is formed at a predetermined position of the lead part 34, and the synthetic resin is passed through the through hole to improve the mounting strength, and the bending operation is performed using the through hole. We make it easy.

If the contact assembly 3 is manufactured in this way, a plurality of lead parts can be obtained in one piece, reducing mold costs, and the lead parts can be continuously processed as an assembly, reducing the number of assembly steps. It is possible to reduce costs by making assembly easier, and it also has advantages such as reducing the management cost of materials and parts, increasing the relative positional accuracy of each lead, and making it easier to create a thin design. It will be held.

The operation of the jack constructed above is as follows.

When the plug 6 is inserted through the cylindrical part 11, the tip of the plug comes into contact with the support part 24 of the clip holder 2, causing the clip holder 2 to slide, and also elastically deforms the support part 24 to form the constriction 61 of the plug tip. can be engaged with. Therefore,
The plug 6 has a ground contact part 35 and a ring contact part 36.
and is electrically connected to the tip contact piece 37, and by the clip 23 of the clip holder 2.
With the switch contact piece 34A in the center as a common,
Front and center switch contact pieces 34A, 34A,
It is possible to switch from the electrically connected state to the electrically connected state of the center and rear switch contact pieces 34A, 34A.

Further, when the plug 6 is removed, the clip holder 2 is slid by the engagement between the constricted portion 61 of the plug tip and the support portion 24, and the support portion 24 is elastically deformed, so that the plug tip can be removed.

Furthermore, since the recess 17 and the protrusion 26 are engaged with each other for positioning, it is possible to effectively prevent the clip holder 2 from shifting. Furthermore, by forming the long groove 18 in addition to the recess 17, the plug 6 Errors caused by the length of can be effectively absorbed. However, if there is no need to consider creep deformation of the convex portion 26, the long groove 18 may not be formed.

The present invention is not limited to the above embodiments, but instead of using a slide switch with two circuits and two contacts,
In addition to being possible to have one circuit with two contacts,
As shown in the figure, the support piece 2 of the clip holder 2
By horizontally suspending the leaf spring 27 between 4' and using this leaf spring as a support part, it is possible to ensure the support of the constricted part 61 of the plug tip, without otherwise changing the gist of the present invention. Various design changes can be made within the scope.

As described above, the present invention can omit the coil spring for restoring the clip holder, reducing the number of parts and the number of assembly steps.
This has the unique practical effect of being able to reduce costs and prevent a decrease in plug removal force.

Further, when a concave-convex engaging portion for the clip stop is formed, it is possible to prevent the clip holder from shifting due to external vibrations after the plug is removed.

[Brief explanation of the drawing]

Figures 1 to 8 show an embodiment of the present invention, in which Figure 1 is an exploded perspective view of the jack, Figure 2 is a cutaway cross-sectional view of main parts, Figure 3 is a vertical side view, and Figure 4 is a cross-sectional view of the main part. The figure is a longitudinal rear view, Figure 5 is a front view, Figure 6 is a bottom view,
FIG. 7 is a side view, FIG. 8 is a plan view illustrating the manufacturing process of the contact assembly, and FIG. 9 is a perspective view showing the configuration of a clip holder in another embodiment of the present invention. 1...Jack case, 2...Clip holder, 3...Contact assembly, 6...Plug, 17...
Recess, 24... Support part, 26... Convex part, 34A...
...Switch contact piece part, 35... Earth contact piece part (contact piece part), 36... Ring contact piece part (contact piece part), 37...
Tip contact piece part (contact piece part), 61...constriction part.

Claims (1)

[Scope of Claim for Utility Model Registration] A jack case 1 into which a plug 6 is inserted, and a plurality of contact pieces 35, 36 arranged in the plug insertion direction of the jack case 1 so as to come into contact with the plug 6 inserted into the jack case 1. 37, and a clip holder 2 which is disposed on the plug insertion path in the jack case 1 and is pushed by the tip of the plug 6 inserted into the jack case 1 and moved in the insertion direction of the plug 6. The jack case 1 is provided with a plurality of switch contact pieces 34A arranged in parallel in the direction of movement of the clip holder 2, and the clip holder 2 has a structure that elastically deforms when the plug is inserted into the jack case 1, so that the tip of the plug Support parts 24 and 27 are formed to support the constriction part 61 and to make the clip holder 2 return to its original position following the plug 6 when the plug is removed. A jack characterized in that it is provided with a clip 23 that slides on the contact piece and comes into contact with the switch contact piece 34A to be electrically connected.