JPS6125179Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pin jack comprising one or more single pin jacks attached to a base substrate.

As a conventional pin jack, for example, the one shown in FIG. 1 is known. That is, the one shown in FIG. 1 includes a cylindrical bush e having a contact d built into a cylindrical cover c having a large diameter part a on the front end side and a small diameter part b on the rear end side. ,
By fitting the cover c from the front end side and caulking the front edge of the cover c, the cover c and the bush e are integrated to form a single pin jack f. Then, the small diameter part b of the cover c of this single pin jack f is passed through the through hole h of the base board g from the surface side of the base board g, and
A washer-shaped ground terminal i is fitted into the through-terminal part of this small diameter part b, and then the single pin jack f is fixed to the base board g by caulking the through edge of this small diameter part b. ing. However,
With this kind of configuration, workability is poor because multiple caulking processes are required for assembly, and in particular, when the single pin jack f and the base board g are connected by caulking process, various problems such as the following occur. This will cause some inconvenience. That is, once the single pin jack f is crimped onto the base board g, it cannot be removed thereafter. Therefore, even if one of the many single pin jacks f attached to the base board g is defective, all the single pin jacks f... must be discarded as defective products together with the base board g, which is uneconomical. In addition, since the base board g to which the single pin jack f is to be caulked is usually made of synthetic resin, it is difficult to securely fix it, and the base board g may be damaged if the caulking is too strong. , the caulking is too weak, which tends to cause problems such as the single pin jack f coming off from the base board g. In addition, with such a configuration, the ground terminal i is connected to the cover c.
It is difficult to install them all in one piece. Therefore, the number of parts increases, and the cover c and the ground terminal i
There is also the disadvantage that there is a risk of poor contact between the two.

The present invention was developed in light of these circumstances, and its purpose is to facilitate the disassembly of the insulating bushing and the cover attached to it, and to create a single pin jack with the cover attached to the bushing. It also makes it easier to disassemble the base board, eliminating the uneconomical process of discarding a large number of individual pin jacks due to a single defective product. It can be kept compact like a single pin jack,
Moreover, it is an object of the present invention to provide a pin jack which is easier to assemble than the conventional single pin jack by caulking, which also simplifies the installation of the single pin jack onto a base board, and further reduces the number of parts.

In order to achieve the above object, the pin jack of the present invention has a cylindrical part having a plug insertion hole into which a plug is inserted from the front, which is integrally formed at one end of the main body, and is inserted and locked into the main body. A bush made of an insulating material that contacts the plug inserted through the plug insertion hole with the contact, and a ground terminal integrally formed at one end on the bush side of the main body, which is formed by curving a good conductive plate material into a cylindrical shape with their end surfaces aligned. an engagement convex portion having an engagement hole formed on the outer periphery of the cylindrical portion of the bushing so as to intersect the mating surface of the main body of the cover, and protruding from the cylindrical outer surface; The single pin jack with the cover attached is inserted into the cylindrical part of this bushing, and the single pin jack is held in a state where the ground terminal of the cover is extended outward. The base board is provided with a base board integrally formed with a wall and a board main body having a through hole in order to expose the cover part of the single pin jack fitted into the retaining wall to the front side in the fitting direction. Within the retaining wall of
The single pin jack is held by engaging an engaging protrusion protruding from the outer surface of the bushing into an engaging hole formed in the retaining wall.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 6.

A plurality of single pin jacks 1... are connected to the base board 2
A pin jack A is configured by attaching the pin to the pin jack A.

The single pin jack 1 has a bush 3 made of insulating material.
A cover 4 made of a highly conductive plate material is attached to the outer periphery of the tip end of the bush 3, and a contact 5 made of a highly conductive material is fitted and locked inside the bush 3. Butsuyu 3
A cylindrical part 3b having a plug insertion hole 3a is integrally formed at one end of the main body 3', and a stepped part 3c is provided at the part where the cylindrical part 3b and the main body 3' are connected. At the same time, grooves 3d, 3d are provided on the inner surface of the main body 3' and open to the rear end surface. cover 4
is a main body 4' which is formed by curving a good conductive plate material into a cylindrical shape by aligning the end surfaces thereof, and has an earth terminal 4a integrally formed at one end on the bush side, and the outer periphery of the cylindrical part 3b of the bush 3. The rear end surface is brought into contact with the end surface of the stepped portion 3c of the bush 3. The contact 5 is a plate-shaped member having bifurcated electrode portions 5a, 5a on the front end side, and is inserted between the grooves 3d, 3d of the bush 3. Also,
A connecting terminal 5b is integrally formed on the rear end edge of this contact 5.

On the other hand, in the base substrate 2, a plurality of through holes 7 are formed in a plate-shaped substrate body 6, and retaining walls 8 are respectively provided on the back surface of the substrate body 6 so as to surround each of the through holes 7. It is integrally installed. Retaining wall 8
consists of a top wall portion 8a, side walls 8b, 8b, and a bottom wall portion 8c, and the bottom wall portion 8c includes a
Slit 8d for terminal insertion opened on the rear end surface of c
is formed. Further, a positioning wall 9 is provided below the bottom wall portion 8c in parallel with the bottom wall portion 8c for abutting against the top surface of the printed circuit board, etc.
This positioning wall 9 is also formed with a slit 9a for terminal insertion which opens at the rear end surface of the positioning wall 9. Each holding wall 8 of this base substrate 2
Each of the single pin jacks 1 is inserted therein so that the cover 4 portion of the single pin jack 1 is exposed to the surface of the base substrate 2 through the through hole 7.

Incidentally, the bush 3 and the cover 4 are attached to each other by means of the concave and convex engaging portions 11. That is, an engagement protrusion 14 having a wedge-shaped cross section protrudes from the outer surface of the front end 3b of the bush 3, and an engagement protrusion 14 of the cover 4.
4 has a square-shaped engagement hole 15 drilled across the mating surface 4b of the material, so that when the cover 4 is fitted to the bush 3, the cover 4 Inclined surface 14 of the engagement convex portion 14
The engagement protrusion 14 and the engagement hole 15 are made to engage with each other by utilizing elastic deformation in the outer radial direction guided by a. The bush 3 and the contact 5 are attached by means of a concave-convex engaging portion 12. That is, the tongue-shaped engagement protrusion 1 is formed by cutting and raising both side edges of the contact 5 toward the upper surface side.
6, 16, and engaging recesses 17, 17 bored in the grooves 3d, 3d of the bushing 3 at positions corresponding to the engaging protrusions 16, 16, and the contact 5 is connected to the bushing. When the bush 3 is inserted into the grooves 3d, 3d of the bush 3, the engagement protrusions 16, 16
are pressed by the inclined surfaces 16a, 16a of the grooves 3d, 3.
When it is elastically deformed in the direction of widening the width of d and is further inserted, the engaging convex portions 16, 16 are fitted into the engaging recess 1.
7 and 17. In addition,
The rear ends of the grooves 3d and 3d are also opened on both outer surfaces of the bushing 3, so when the contact 5 is inserted into the grooves 3d and 3d, the bushing 3 side is mainly elastically deformed as described above. However, it is natural that the engaging protrusions 16, 16 of the contact 5 are also slightly elastically deformed. Further, the single pin jack 1 and the base board 2 are attached by means of a concave and convex engaging portion 13. That is, an engaging convex portion 18 having a wedge-shaped cross section protruding from the outer surface of the bush 3 of the single pin jack 1 and a top wall portion 8 of the retaining wall 8 of the base board 2.
A has a square-shaped engagement hole 19 bored in correspondence with the engagement convex portion 18, and when the single pin jack 1 is inserted into the holding wall 8 of the base board 2, the holding wall 8 of the base board 2 is The wall 8 is the inclined surface 1 of the engaging protrusion 18
The engagement protrusion 18 and the engagement hole 19 are caused to engage with each other by utilizing the outward elastic deformation guided by the engagement projection 8a.

According to the configuration of the present invention, simply by fitting the cover 4 onto the outer periphery of the cylindrical portion 3a of the bush 3 into which the contact 5 is fitted and locked, the engagement convex portion 14 of the bush 3 can be inserted into the cover 4. engages with the engagement hole 15,
The cover 4 is attached to the bush 3, thereby completing the single pin jack 1. Then, by simply inserting the single pin jack 1 assembled in this way into the holding wall 8 of the base board 2, the engaging convex portion 18 of the single pin jack 1 can be removed.
engages with the engagement hole 19 of the base substrate 2, and the single pin jack 1 is held within the retaining wall 8. Therefore, the assembly work is much simpler than the conventional one, which requires crimping many times. Also, even after it is assembled,
For example, if the engagement protrusion 18 of the bush 3 is pressed, the engagement with the engagement hole 19 of the retaining wall 18 is released, and the bush 3 and the base board 2 can be easily disassembled. mating surface 4b of cover 4
When the openings are expanded, the engagement between the engagement hole 15 of the cover 3 and the engagement protrusion 14 of the bush 3 is released, and the cover 4 and the bush 3 can be easily disassembled. Therefore, for example, if a defect is found in one of the plurality of single pin jacks 1 attached to the base board 2, only the defective single pin jack 1 should be removed from the base board 2 and replaced with a new one. It is convenient and economical because all you need to do is just do it. Moreover, with such a device, the single pin jack 1 and the base board 2 can be sold separately, and the user can freely assemble them. In this case, if a plurality of types of single pin jacks 1 of different colors are provided, a plurality of single pin jacks 1 of various colors can be installed on one base board 2 according to the user's preference or as necessary. There is also the convenience of being able to selectively install the In addition, in such a structure, one end of the cover 4 is attached by the engagement between the bush 3 and the cover 4, and the attachment by the engagement between the bush 3 and the retaining wall 8 of the base board 2. It has now become possible to integrally form the ground terminal 4a. Therefore, compared to conventional models in which the ground terminal was provided separately from the cover, the number of parts is reduced and manufacturing is easier, and it also prevents contact failure accidents that conventionally tend to occur between the ground terminal and the cover. It can be prevented. Furthermore, by integrating the cover 4 and the ground terminal 4a and reducing the number of parts, the single pin jack can not only be made smaller than or equal to the size of a conventional single pin jack made by caulking. By downsizing the single pin jack, it is possible to more closely attach it to the base board. Therefore, it can cope with the recent downsizing of electrical equipment.

In the above embodiment, the case where two single pin jacks were attached to the base board was explained.
Of course, the present invention is not necessarily limited to this type of device; for example, one or more single pin jacks may be attached to one base board.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing a conventional example. Figures 2 to 6 show one embodiment of the present invention, with Figure 2 being an exploded perspective view, Figure 3 being a front sectional view, and Figure 4 being a third
FIG. 5 is a schematic sectional view taken along the line - in FIG. 3, and FIG. 6 is an exploded partially cutaway front view. 1...Single pin jack, 2...Base board,
3...Butsuyu, 3'...Butsuyu main body, 3a
...Plug insertion hole, 3b...Cylindrical part, 4...Cover, 4'...Body of cover, 4a...Earth terminal, 4b...Matching surface, 5...Contact, 6...
...Substrate body, 7...Through hole, 8...Retaining wall, 14...
...An engaging protrusion protruding from the cylindrical part of the bush, 15...
...an engagement hole drilled in the cover; 18...an engagement projection protruding from the main body of the bush; 19...an engagement hole bored in the retaining wall.

Claims (1)

[Scope of utility model registration request] A cylindrical part having a plug insertion hole into which the plug is inserted from the front is integrally formed at one end of the main body, and the plug inserted through the plug insertion hole is brought into contact with the contact fitted and locked in the main body. The cylindrical shape of the bushing includes a bushing made of an insulating material, and a cover with a ground terminal integrally formed on one end of the bushing side of a main body made of a well-conductive plate material curved into a cylindrical shape with their end faces aligned. The main body of the cover is attached to the outer periphery of the bushing by engaging an engagement hole drilled across the mating surface with an engagement protrusion protruding from the cylindrical outer surface. a retaining wall into which a single pin jack with a cover attached is inserted and which surrounds the single pin jack with the ground terminal of the cover extending outward; A base board is provided, which is integrally formed with a board main body having a through hole formed therein so that the cover portion is exposed forward in the insertion direction, and the single pin jack is held within the retaining wall of the base board, and the single pin jack is inserted into the retaining wall of the base board. 1. A pin jack, characterized in that the pin jack is held by engaging an engaging protrusion protruding on the outer surface with an engaging hole formed in the retaining wall.