JPH05290949A - Assembly and fixing method for terminal fitting in coaxial cable - Google Patents

Abstract

PURPOSE:To automate assembly and manufacture processes by feeding component materials in sequence to a case body, coupling the engagement holes of the materials to corresponding boss sections for assembly, and then crushing each of the boss sections for fastening the component materials. CONSTITUTION:When a grounding plate 9 is fed to a substrate 2, aligned with the predetermined position, each boss section 4 is coupled to a corresponding engagement hole 10, and an insertion aperture 11 is coupled to the upper end 6b of a holder section, thereby positioning the grounding plate 9 in approximately proper state. Furthermore, when a plug pin is inserted and fed to an insertion aperture 7 from the upper end 6b, a fitting tongue piece 12c comes in contact with the upper end 6b, and concurrently each boss section 8 formed on the upper end 6b is coupled to the engagement hole 13 of the tongue piece 12c, thereby realizing approximately proper positioning. While this state is being maintained, each of the boss sections 4 and 8 is cold or hot crushed, thereby assembling each component material into a case body 1 firmly and in pressed contact state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal type terminal fitting which is attached as an adapter or a connector to the end of a coaxial cable having a power supply line as a center and an earth line disposed outside thereof. The present invention relates to a method for assembling and fixing each component in a metal fitting.

[0002]

2. Description of the Related Art A horizontal type terminal fitting of this type includes a case body integrally formed with a tubular connector portion projecting laterally with respect to a board, a ground fitting, a plug pin, an earth clamp portion, and the like. There are constituent parts, and as means for assembling and fixing each of these constituent parts, there are, for example, press-fitting, caulking, bending or engaging and fixing by lance claws, etc., and a fixing means for parts is configured by combining these plural means. ing.

[0003]

As for the means for assembling the respective constituent parts of the terminal fitting in the above-mentioned conventional example, whichever of a plurality of fixing means is selected, the individually formed constituent parts are Not only the accuracy of the mold for forming each part is strictly required, but also the work of assembling the disjointed parts becomes complicated, and the skill in the assembly work is also required. Therefore, there is a problem that the total cost will increase due to lack of manpower and soaring labor costs. Therefore, in the conventional example, there is a problem to be solved in avoiding a strict requirement for parts accuracy and facilitating assembling work, that is, being able to cope with automatic assembling.

[0004]

As a concrete means for solving the above-mentioned problems, the present invention provides a case body integrally formed with a cylindrical connector portion and a substrate, and a plurality of constituent members assembled to the case body. A plurality of boss portions are formed on the case body, and engaging holes are provided in the plurality of constituent members respectively corresponding to the boss portions, and the constituent members are attached to the case body. A method for assembling and fixing a terminal fitting in a coaxial cable, characterized in that the engaging holes are fitted into the corresponding boss portions and incorporated into the corresponding boss portions, and the boss portions are crushed and fixed in order. The case body is made of resin, and the plurality of constituent members are
For example, it is composed of an earth plate having a grip portion, a cylindrical earth metal fitting, and a plug pin, and the boss portion and the engaging hole are in a loose state in which the dimensional accuracy is not required. ..

[0005]

According to the present invention, a plurality of boss portions for mounting parts are provided on a reference case body, and a plurality of constituent members incorporated therein are provided with engaging holes corresponding to the boss portions, respectively. The parts and the engaging holes are roughly aligned with each other, and the bosses are crushed while maintaining that position so that the respective constituent members are assembled.

[0006]

The present invention will be described in more detail with reference to the illustrated embodiment. In the first embodiment shown in FIGS.
Is a case body, and the case body 1 is made of an appropriate resin and is integrally formed with a substrate 2 and a cylindrical connector portion 3 projecting laterally or downwardly from the substrate 2.

The case body 1 serves as a reference for assembling, and a plurality of boss portions 4 are formed on the substrate 2 in a protruding manner, and at a portion where the cylindrical connector portion 3 is formed. A pair of recesses 5 having a predetermined depth, into which a flap portion of an earth metal fitting described later is fitted, are formed at symmetrical positions.

A holder portion 6 is formed on the connector portion 3 of the case main body 1 so as to be located at the center of the inside thereof, and the holder portion 6 holds the plug pin and guides the grounding metal. Connector part 3
3 are concentrically arranged inside and are formed integrally with the inner wall of the connector portion 3 by a connecting portion 6a having a predetermined width and thickness at a part thereof, as shown in FIG.

The connecting portions 6a are formed at least at two symmetrical positions (in the case of three, radially with equal intervals) so that the holder portion 6 can be positioned inside the connector portion 3 in a stable state. There is. The upper end 6b of the holder 6 is formed in a generally rectangular shape so as to project above the substrate 2, and an insertion hole 7 through which a plug pin is inserted is vertically penetrated through the center of the upper end 6b. Is formed.

A plurality of bosses 8 are formed on the upper surface of the upper end 6b of the holder 6 thus formed. In this case, two bosses 8 are formed in the vicinity of the corner portion at a symmetrical position having a rectangular shape.

One constituent member incorporated in the case body 1, that is, the ground plate 9, has a flat portion 9a and a grip portion 9.
b and a plurality of round hole-shaped engaging holes 10 corresponding to the boss portions 4 respectively, and a square hole-shaped insertion hole 11 corresponding to the upper end portion 6b of the holder portion 6 is formed. There is. Further, the grip portion 9b is formed in a state of standing up halfway.

The other component member attached to the holder portion 6, that is, the plug pin 12 has a pin 12a on the front end side and a connecting portion 12b for connecting to a power supply line on the rear end side and a tongue for attachment to the case body 1. A piece 12c is provided. In this case, the connecting portion 12b has a plate shape and is formed by providing a slit 12d in the lengthwise direction at the center thereof, and the attachment tongue piece 12c is formed by forming plate-like folded pieces on both sides. To be done. An engaging hole 13 corresponding to the boss portion 8 is formed in the mounting tongue piece 12c.

As shown in FIGS. 5 and 6, the other component member, that is, the grounding metal fitting 14, housed in the connector portion 3 has a generally cylindrical shape, and is connected to both sides of the upper edge thereof. The flap portion 15 is formed, and the flap portion 1 is formed.
5 is a round hole-shaped engaging hole 16 corresponding to one of the bosses 4
To form. If necessary, a punch hole 17 may be provided in the vicinity of the engagement hole 16 in order to prevent displacement or to absorb a dimensional error in contact.

Further, the earth metal fitting 14 has a notch 18 formed from the lower end side of its tubular portion. The cutout portion 18 corresponds to the connecting portion 6a of the holder portion 6. When the connecting portion 6a is formed in two places, two cutout portions are provided, and in the case of three places, the cutout portion 18 is formed. Three notches are provided.

When assembling the above-mentioned respective constituent members,
First, the case body 1 is connected to the connector portion 3 as shown.
Are set to a predetermined assembly position so that they are located on the lower side, and then the grounding metal fitting 14 is dropped from the substrate 2 side into the connector portion 3. In this case, when the cutout portion 18 of the grounding metal fitting 14 is dropped so as to correspond to the connecting portion 6a, the flap portion 15 of the grounding metal fitting 14 causes the recessed portion 5 of the substrate 2 to move.
At the same time, the boss portion 4 is fitted into the engagement hole 16, and the ground metal fitting 14 is located between the connector portion 3 and the holder portion 6 as a whole.

Next, when the earth plate 9 is supplied onto the substrate 2 in a predetermined direction and position, each boss portion 4 is fitted into the corresponding engaging hole 10 and the upper end of the holder portion 6 is provided. By inserting the insertion hole 11 into the portion 6b, the ground plate 9
Is positioned in a substantially proper state, and in this state the ground plate 9
And the flap portion 15 of the grounding metal fitting 14 are in contact with each other.

Further, when the plug pin 12 is supplied from the upper end portion 6b side of the holder portion 6 into the insertion hole 7 so as to be inserted or press-fitted, the mounting tongue piece 12c abuts the upper end portion 6b, and at the same time, the mounting tongue piece 12c. The boss portions 8 provided on the upper end portion 6b are fitted into the engaging holes 13 provided on the piece 12c, respectively, so that substantially proper positioning is performed.

As described above, it is inevitably roughly necessary to mechanically sequentially supply the respective constituent members in one direction on the basis of the case main body 1 from above to the case main body 1 set at a predetermined assembly position. The bosses 4 and 8 are positioned, and the respective bosses 4 and 8 are crushed by, for example, cold or heating while maintaining this state, whereby the respective constituent members are firmly and press-fitted to the case body 1.

The above-mentioned rough positioning is performed by fitting the boss portion formed on the case body side and the engaging hole formed in each component, and the fitting is strict. It does not require precision and it is sufficient if it is done in a loosely fitted state.By crushing the boss portion with cold or heating means from that loosely fitted state, the gap in the loosely fitted state is filled and all parts are rationalized. It is fixed in a proper position.

The ground wire 19a portion of the coaxial cable 19 is crimped and fixed to the terminal fitting thus assembled by the grip portion 9b, and the power supply wire 19b is plugged into the plug pin 12.
It suffices to press it into the slit 12d of the connecting portion 12b and hold it. A cover member 20 is attached to the case body 1, and a box-shaped shield 21 for noise prevention is attached to the cover member 20.

In the second embodiment shown in FIG. 7, the shape of the earth plate 9 is slightly modified, for example, the grip portion 9b is bent stepwise with respect to the flat portion 9a and raised one step. Correspondingly, a base portion 2a having a predetermined height is formed on the substrate 2 of the case body 1. Even in the case of this embodiment, the formation of the boss portion 4 formed on the substrate 2 and the corresponding engagement hole 10 is not different.

Further, the third embodiment shown in FIG. 8 is substantially the same as the first embodiment except that the order of assembling the parts is different. That is, by supplying the ground plate 9 first and then supplying the ground metal fitting 14,
The flap portion 15 of the grounding metal member 14 comes to ride on the upper portion of the grounding plate 9, and the boss portion 4 is crushed so that they are pressed against each other. In any case, it is the same in that the constituent members are supplied and assembled from one direction with reference to the case body 1.

[0023]

As described above, according to the method of assembling and fixing the terminal fitting in the coaxial cable according to the present invention, the case main body in which the tubular connector portion and the substrate are integrally formed, and the plurality of parts to be assembled to the case main body are provided. Consisting of individual components, forming a plurality of bosses on the case body,
Engagement holes are provided in each of the plurality of component members corresponding to the boss portion, and the component members are sequentially supplied to the case main body from one direction, and the engagement holes are fitted in the corresponding boss portions. By assembling and crushing and fixing each boss by cold or heating means, the supply and assembling fixing work of each component is simplified, so that the assembly and manufacturing of terminal fittings can be performed without manual work. It has an excellent effect that automation can be achieved.

Further, a boss portion formed on the case body,
Since the engagement with the engaging holes formed in each component is in a loose fitting state and strict dimensional accuracy is not required, the manufacturing of each component becomes inexpensive, and in combination with the automation, a significant cost reduction is achieved. It has an excellent effect that it can be achieved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an assembling process of a terminal fitting of a first embodiment manufactured by carrying out a method of the present invention.

FIG. 2 is a plan view showing an assembling process of the terminal fitting of the first embodiment manufactured by carrying out the method of the present invention.

FIG. 3 is a vertical sectional side view of the terminal fitting of the first embodiment obtained by carrying out the method of the present invention.

FIG. 4 is a vertical cross-sectional view of the terminal fitting of the first embodiment obtained by carrying out the method of the present invention as seen from another direction.

FIG. 5 is a side view showing an example of a suitable ground fitting used to carry out the method of the present invention.

FIG. 6 is a bottom view of the grounding fitting shown in FIG.

FIG. 7 is a schematic side view showing a second embodiment according to the present invention.

FIG. 8 is a schematic side view showing a third embodiment according to the present invention.

[Explanation of symbols]

 1 Case Main Body 2 Substrate 2a Base Part 3 Connector Part 4,8 Boss Part 5 Recessed Part 6 Holder Part 6a Connecting Part 6b Upper End Part 7,11 Insertion Hole 9 Ground Plate 9a Flat Part 9b Grip Part 10, 13, 16 Engagement Hole 12 Plug pin 12a Pin 12b Connection part 12c Mounting tongue piece 14 Ground metal fitting 15 Flap part 17 Punch hole 18 Cutout part 19 Coaxial cable 19a Ground wire 19b Power supply wire 20 Lid member 21 Shield

Claims (4)

[Claims] 1. A case main body having a tubular connector portion and a substrate integrally formed, and a plurality of constituent members assembled to the case main body, wherein a plurality of boss portions are formed on the case main body. Engagement holes are provided in each of the plurality of component members corresponding to the boss portion, and the component members are sequentially supplied to the case main body from one direction, and the engagement holes are fitted in the corresponding boss portions. A method for assembling and fixing terminal fittings in a coaxial cable, characterized by incorporating and crushing and fixing each boss. 2. The method for assembling and fixing a terminal fitting in a coaxial cable according to claim 1, wherein the case body is made of resin. 3. The method for assembling and fixing a terminal fitting in a coaxial cable according to claim 1, wherein the plurality of constituent members include a ground plate having a grip portion, a cylindrical ground fitting, and a plug pin. 4. The method for assembling and fixing a terminal fitting in a coaxial cable according to claim 1, wherein the fitting between the boss portion and the engaging hole is in a loose state.