JPS6224947Y2 - - Google Patents

Description

[Detailed explanation of the invention] Conventional small jacks have a complicated attachment mechanism for the contact piece, which makes it difficult to miniaturize the body and parts, and also has poor work efficiency when assembling the contact piece. ,
Since the ground terminal normally makes contact with the plug with a single contact spring piece that is bent, the spring force of that single spring piece tends to decrease after long-term use, resulting in poor contact. It gets easier,
The drawback is that it lacks long-term stability.

The present invention eliminates all of the above-mentioned conventional drawbacks, simplifies the mechanism and parts, facilitates assembly, and provides a ground terminal mechanism with long-term stable contact performance. The object of the present invention is to mass-produce an economical ultra-compact jack that is easy to assemble and has reliable and stable contact performance by making the container body extremely compact due to the step-overlapping arrangement of the jacks.

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

One side of the front wall 1 is a plug insertion part 2 of an appropriately shaped plug insertion part 2, and a square plug insertion hole 4 is bored through the insertion part 2 into the rear wall 3, with the middle part serving as a deep groove with an upward opening. A rectangular jack case body 6 with an upper opening formed by forming a shallow step cavity 5 from the upper opening of the insertion hole 4 to the other side.
In addition, there are pocket grooves 7 in the lower part of the plug insertion hole 4 of the rear wall 3 into which both sides of the flat plate are inserted.
A slit 8 of a required length is made to communicate with the front by means of flat plate fitting widths 7' provided on both sides facing each other, and a locking window hole 9 opened in one pocket groove 7 is inserted into the rear part of the side wall of the main body 6. A terminal leg 10 is fitted into the shallow step cavity 5 of the main body 6 outside the main body 6, and a plug abutting portion 11 is formed in a protruding shape with respect to the opening of the deep groove plug insertion hole 4. A movable contact piece 12 of a suitable shape for bending a wire or a spring plate is fixedly equipped, and both sides of the deep groove side of the slit 8 are fitted into the opposing pocket grooves 7 and 7'. The flat plate part 13 that is inserted is the rear part, and the inner portions of the pair of front end parts protrude forward from the pocket grooves 7, 7' into the inside of the plug insertion hole 4 in an inwardly inclined shape, and the insertion plug P is inserted into the plug insertion hole 4. Fork-shaped leg pieces 14, 14' of a required length that spring open and move in the pocket grooves 7, 7' when pressed and pressed against the pocket grooves 7, 7'.
A U-shaped ground terminal 17 is provided with a locking protrusion 15 on one side of the flat plate portion 13 for locking into the window hole 9, and a terminal leg 16 is bent downward at the center of the rear side. , by inserting both sides of the flat plate part 13 into the pocket grooves 7 and 7' from behind, and inserting the fork-shaped leg piece 1
The inner portions of the front ends of the legs 14, 14' are made to protrude into the insertion hole 4, and the legs 14, 14' are inserted into the locking window hole 9 so that they open and spring inside the pocket grooves 7, 7'. The locking protrusion 15 is locked and fixed, and the upper opening of the main body 6 is covered with a cover plate 18 adapted to the shape of the opening.

In addition, the plug insertion part 2 provided in the front wall 1 is
As shown in the figure, the front wall 1 may have a thick wall width and a plug insertion hole 4 may be bored there, and the insertion portion 2 may be designed as it is in the front wall 1, or an appropriate plug may be inserted into the front wall 1. The insertion tube may be designed to protrude. If the plug insertion hole 4 is a square hole as shown in the figure, a square insertion plug P formed by stacking electrode layers 20 on top and bottom with an insulating layer 19 sandwiched in the center as shown in FIG. 6 is used. However, it is also possible to use a circular hole instead.

When the insertion hole 4 is a circular hole, a circular plug with laminated upper and lower electrodes can be used, but in order to restrict the fitting of the circular plug into the circular hole, there are irregularities on the edge of the circular hole and on the plug side. It is necessary to attach a fitting mechanism or some other appropriate positioning mechanism,
A square hole is more appropriate because it does not require positioning.

In addition, for the movable contact piece 12, a coil spring made of wire material is most suitable than a spring plate material, and in that case,
As shown in the figure, a pin portion 22 into which the coil portion 21 is fitted is provided at the corner portion of the shallow step cavity 5, and a low step groove portion 23 is provided around the pin portion 22 and at a location relative to the terminal leg 10. Part 2
2 and the lower part of the coil part 22 fitted to the terminal leg 10
By fitting and inserting the movable contact piece 12 shown in the figure, the plug abutment part 11 of the upper part from the coil part 21 is located in the space 5, and the movable contact piece 12 of the coil spring is located in the most It is a member that is ultra-small and has durable spring performance, and is very convenient for miniaturizing the container body, but it is not limited to coil springs.

Further, the illustrated thick rear wall 3 of the main body 6 is suitable as a projecting wall for covering or in terms of body design, but is not an essential form.

Further, although the U-shaped ground terminal 17 is singular in the above embodiment, it may be used as shown in FIGS. 9 and 1 if necessary.
As in the embodiment shown in FIG. 0, it is possible to design a required number of layers to be fitted in a stacked stage. In this case, the plug insertion hole 4 is provided in a deeper groove, and the slits 8, which are formed to communicate with the insertion hole 4 from the rear wall 3, are formed at several stages of terminals at intervals, and If the third part is formed on the reverse staircase wall, multiple U
The configuration is such that the 17 groups of type ground terminals are fitted into the corresponding 8 groups of slits, respectively. The insertion plug P in this multi-terminal configuration is a laminated multi-pole plug in which each insulating layer 19 is sandwiched between a corresponding number of electrode layer 20 groups as shown in FIG.

Furthermore, if the case body 6 is configured such that a plug insertion hole 4 is provided in the center of the main body 6, and a symmetrical shallow step cavity 5 is provided on both sides of the upper opening of the insertion hole 4, both sides of the plug insertion hole 4 are provided. Since the movable contact piece 12 can be arranged in double symmetry with respect to the space 5, a double-type jack structure is obtained.

Furthermore, it is also possible to arrange and design a suitable fixed contact piece into the space 5, into which a terminal leg is fitted externally to switch the movable contact piece 12.

In addition to the above, the locking and fixing mechanism for the ground terminal 17 may include a cut-and-raised piece provided on the flat plate portion 13 and locking means for a window hole provided from the bottom surface of the main body 6.

Since the present invention is constructed as described above, the movable contact piece 12 of the coil spring is connected to the lower part of the coil part 21 and the terminal leg 1 in the low step groove 23 recessed around the pin part 22.
0, the terminal leg 10 is fitted to the outside of the device, and the coil part 21 is fitted to the pin part 22.
is installed in the upper opening of the plug insertion hole 4 in the form of a stepped protrusion, and the U-shaped ground terminal 17 is inserted in the slit 8 from the rear wall 3 side toward the front, facing both sides. By simply inserting both sides of the flat plate part 13 into the pocket grooves 7, 7' of the terminal 17, the locking protrusion 15 on one side of the flat plate part 13 of the terminal 17 locks into the locking window hole 9. , the terminal leg 16 bent downward
By contacting the rear wall 3, the terminal 17 communicates with the lower part of the plug insertion hole 4 and is securely fitted and fixed.
4' is positioned so as to open and spring within each pocket groove 7, 7' in a state in which the inner portion of the front end protrudes from inside the pocket grooves 7, 7' on both sides of the slit 8 into the insertion hole 4. That will happen.

As a result, in the case body 6, the U-shaped ground terminal 17 is fitted into the plug insertion hole 4 which forms a deep groove with respect to the shallow step cavity 5, and the U-shaped ground terminal 17 is fitted into the cavity 5.
Therefore, the plug abutting portion 11 of the movable contact piece 12 is protruded into the upper opening of the insertion hole 4 and is disposed in a stepped manner in an upper overlapping manner. Since the contact portions of the movable and grounding members that come into contact with the springs are arranged in a vertically different manner, the space for the arrangement mechanism is reduced accordingly, and as a result, the case body 6 can be made more compact. Then, the space 5 of the movable contact piece 12
Not only is it easy to install the ground terminal 17 inside the slot 8, but also the ground terminal 17 can be installed by simply press-fitting it into the slit 8, so the mechanism is simple and the assembly work efficiency is very high. By drilling the plug insertion hole 4 that communicates with the slit 8 and configuring the cover, it can be easily manufactured at low cost and in an ultra-small size. Therefore, when a laminated insertion plug P with electrode layers 20 on top and bottom is inserted into the insertion hole 4 from its front entrance, the plug P is inserted into the insertion hole 4 through the pocket grooves 7 and 7' of the slit 8. The lower electrode portion touches and enters between the fork-like legs 14, 14' of the lower U-shaped ground terminal 17 protruding into the hole 4, and pushes the legs 14, 14' at the concave tip. Since it is spread out, the tips of the leg pieces 14, 14' at the lower end come into pressure contact with the lower electrode part with a spring, and the upper movable contact piece 12 whose upper electrode part protrudes into the insertion hole 4 The plug abutting portion 11 of the plug is pressed to make pressure contact.
Both the movable contact piece 12 and the ground terminal 17 make reliable plug contact at the upper and lower portions of the insertion hole 4.

Therefore, the spring legs of the fork-like legs 14, 14' of the flat ground terminal 17 are opened by the plug.
As the leg pieces 14, 14' are fitted into the pocket grooves 7, 7' and guided, the leg pieces 14, 14' are not bent or damaged at all, and therefore the legs of the flat leg can be opened easily. The spring force is constant, strong and durable, and together with the spring contact between the legs, there are no accidents of poor contact with the plug, ensuring reliable and stable contact performance during long-term use. The movable contact piece 12 and the ground terminal 1 are connected to the insertion hole 4.
Due to the overlapping arrangement configuration of the upper and lower steps with respect to 7, it is possible to use a laminated plug in which the electrode layers 20 are laminated on top and bottom.
The laminated plug has a very simple structure and can easily be manufactured into an ultra-small plug, which is very economically advantageous. This makes it very convenient to arrange multiple U-shaped ground terminals 17 in different levels, and the laminated multi-pole plug can be made very small by simply sandwiching the insulating layer 19 with electrodes. Since it can be manufactured in a small size, the target plug used can be made ultra-small and economical, and in conjunction with this, as mentioned above, the ultra-small body and high assembly efficiency make it economical and have excellent contact performance. It has the advantage of being able to mass-produce stable ultra-compact jacks.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is an enlarged plan view showing the internal mechanism for opening the lid, Fig. 2 is an enlarged plan view, Fig. 3 is a right side view of Fig. 2, and Fig. 4 is an enlarged plan view showing the internal mechanism for opening the lid. is a cross-sectional view taken along line A-A' in Figure 1, Figure 5 is a front view of Figure 2, Figure 6 is an enlarged oblique view of the connector section of the laminated plug used in this product, and Figure 7 is a cross-sectional view of Figure 2. B- in the diagram
8 is a rear view of FIG. 2, and FIG. 9 is a fitting part of another example in which a plurality of ground terminals are fitted, and a part of a laminated multi-pole plug thereto. FIG. 10 is a rear view of the terminal fitting portion in another example shown in FIG. 9, and FIG. 11 is an exploded perspective view of FIG. 1. 4...Plug insertion hole, 5...Shallow step cavity, 6
... Jack case body, 7, 7' ... Pocket groove, 8 ... Slit, 9 ... Locking window hole, 12 ...
Movable contact piece, 13... Flat plate portion, 14, 14'... Fork-shaped leg piece, 15... Locking protrusion, 16... Terminal leg, 17... U-shaped ground terminal, 18... Cover plate.

Claims (1)

[Scope of utility model registration request] A jack case with an upward opening, in which a plug insertion hole 4 serving as a deep groove with an upward opening is bored from one side of the front wall 1, and a shallow step cavity 5 is formed from the upper opening of the insertion hole 4 to the other side. Pocket grooves 7 and 7' are provided in the main body 6 from the rear wall 3 to the lower part of the insertion hole 4 for inserting both sides of the flat plate, and a slit 8 for inserting the flat plate is bored in communication with the required length. A locking window hole 9 opening into one pocket groove 7 is provided in the rear side wall of the main body 6, and a suitable hole for bending wire or spring plate material is provided in the shallow stepped space 5 of the main body 6. The movable contact piece 12 has a plug abutting part 11 that projects into the opening of the insertion hole 4 and a terminal leg 10.
At the same time, the front ends of each other are inserted into the insertion hole 4 toward the front from the flat plate part 13 whose both sides are inserted into the pocket grooves 7 and 7' with respect to the slit 8 on the deep groove side. The pocket groove 7 protrudes inward;
Fork-like leg piece 1 that springs open within 7'
4 and 14' are arranged in series, a locking protrusion 15 is provided on one side of the flat plate portion 13 to lock into the window hole 9, and a terminal leg 16 is provided on the rear side.
7, insert both sides of the flat plate part 13 into the pocket grooves 7, 7' from behind, and insert the fork-shaped leg pieces 14, 1.
The inner part of the front end of 4' projects into the insertion hole 4, and the leg pieces 14, 14' fit into the pocket grooves 7, 4'.
A small jack in which a locking protrusion 15 is fitted and fixed in a locking window hole 9 so as to be able to open and spring inside 7', and the upper opening of the main body 6 is covered.