JPH0733398Y2 - Plug with cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an improvement of a plug with a cable suitable for use in connecting a video device, various other electronic devices, etc., and particularly, to the reliability of the plug. The present invention relates to a plug with a cable, which has high quality and good productivity by improving a mounting portion between a housing and each pin of the plug in order to improve productivity and yield in manufacturing.

[Conventional technology]

Normally, a video device requires various devices such as a CRT display device and a speaker that make up the system, in addition to the main body, and during use, between these devices, a power supply and a necessary video signal are required. In order to send and receive the data, they are connected to each other with a cable or the like equipped with a connector.

Therefore, a plug with a cable has been conventionally used.

FIG. 10 is a circuit diagram showing an example of connection of a conventional plug with a cable. In the drawing, Vid is a video pin, A
ud indicates an audio pin, and + B indicates a power pin.

Figure 10 shows a plug with a cable for a video camera, which has a video pin Vid and an audio pin A.
The ud and the two-pole power supply pin + B are integrally formed to form one plug, and the cable is connected to the other end.

In order to improve the reliability of such a plug with a cable, it is required to strengthen the connection between the plug and the cable. After mechanically and mechanically connecting, the whole is integrally molded with other parts such as a housing made of an insulating material that holds a conductor such as a pin and a grounding metal, and the like.

However, in the case of this plug with a cable, if a gap is created in the mounting portion between the housing to be assembled first and the conductor such as the pin or the grounding metal during manufacturing, a part of the molding material will be removed during the subsequent molding process. It may flow out to the connection side of the plug, and not only is it visually unappealing, but if a large amount of mold is flowed out, the connection state during use will deteriorate, and the reliability will decrease. This is one of the causes, and as a result, there is a problem that the yield is deteriorated.

[Problems to be solved by the device]

According to the present invention, in order to solve the above inconvenience in the conventional plug with a cable and to accurately mount the housing, the plug and the respective pins in a predetermined positional relationship, the housing and the respective pins of the plug are mounted during the first molding process. By improving the mounting part of each pin of the housing so that the molding material does not flow out from the part,
It is an object of the present invention to provide a plug which is highly reliable and has a very good yield in manufacturing.

[Means for Solving the Problems]

In this invention, a plurality of pins (3, 3 ', 4), a grounding metal (2), and a housing (1) to which the pins (3, 3', 4) and the grounding metal (2) are fixed And a cable (6) to which the pins (3, 3 ', 4) and core wires corresponding to the grounding metal (2) are connected, respectively, and a first mold integrally molded to cover the outer periphery of the plug connecting portion. A first mold body (5) and a second mold body (7) integrally molded so as to cover the entire outer periphery of the first mold body (5), and from the front side of the housing (1) The earth metal fitting (2) is press-fitted and fixed in advance, the connecting portion of the earth metal fitting (2) is connected to the corresponding core wire of the cable (6), and the pins (3, 3 ′, 4) and the cable (6) are connected. The corresponding core wires are connected to each other, and the pins (3, 3 ', 4) are press-fitted and fixed from the rear of the housing (1). A plug assembly comprising the first and second mold bodies (5, 7) integrally formed by a molding process, wherein the housing (1) is grounded on the front surface thereof. Metal fittings (2)
(10) for mounting the metal fitting, a mounting hole (11) for the grounding metal fitting (2) that is partially connected to the groove (10) and penetrates rearward, and a mounting hole (12) that does not penetrate rearward. ,13)
And a member (11a) for mounting the earth metal fitting (2) provided in the vicinity of the hole (11) and on the rear surface, and a plurality of pins (3, 3 ', 4) penetrating from the front surface to the rear surface. ), Which is press-fitted from the rear, and the holes (14, 14 ', 15)
And members (14a, 14b, 14a ', 14b', 15a to 15d) for mounting the pins (3, 3 ', 4) provided in the vicinity of and on the rear surface, the earth metal fitting (2) is a jack. Contact portions (2a, 2b) contacting the outer of the housing and the groove portion (1) of the housing (1).
0), a connecting part (2c) connected to the fitting part, penetrating the rear surface of the housing (1), and connecting with a corresponding core wire of the cable (6); (1) A fixing part (2d, 2e) fixed inside the mounting member (12a, 13a) provided on the rear surface, and the pin (3, 3 ', 4) is previously formed at its rear end. It is the structure connected with the corresponding core wire of the cable (6).

〔Example〕

First, the state of the plug with cable of the present invention at the time of completion will be described.

2 (1) and 2 (2) are configuration diagrams showing an embodiment of a plug with a cable of the present invention, (1) is a front view, and (2).
Is a bottom view. In the drawings, 1 is a housing, 2 is a grounding metal, 3 and 3'are octal pins, 4 is a bipolar pin,
Reference numeral 6 denotes a cable, and 7 denotes a second mold body (upward push).

The plug with cable shown in FIG. 2 is an internal circuit having the same configuration as the circuit shown in the connection diagram of FIG.

As described above, the present invention is characterized by the mounting portion between the housing and each pin of the plug, that is, the mounting portion of each pin 2 to 4 to which the core wire of the cable 6 is soldered to the housing 1. Therefore, the external appearance is similar to that of the conventional plug.

1 (1) and 1 (2) are configuration diagrams showing an embodiment of a main part of a plug with a cable of the present invention, wherein (1) is a front view and (2) is a bottom view. The reference numeral in the drawings is the second
Similar to the figure, 5 is the first mold body (downward pressing), and 5a and 5a 'are holes penetrating the first mold body 5.

FIG. 1 shows the state before the second mold body 7 is provided in FIG. 2, that is, the state before the molding process which is the final step, and is performed in the previous step. The main part of the plug with cable after the molding process (first molding process) is shown.

Therefore, the first mold body 5 molded in the previous molding process (first molding process) can be seen.

The first mold body 5 is a transparent or semi-transparent mold material, and has a grounding metal 2, an octal pin 3, 3 ', and a two-pole pin 4 soldered to each core wire of the cable 6.
Is inserted and held in a predetermined position of the housing 1 and is accurately positioned, and is formed by molding.

Therefore, the connection between the earth metal fitting 2, the octal pins 3, 3 ', etc. and each core wire of the cable 6 is kept in a good state, or the mounting position of the housing 1 and each of the pins 2 to 4 thereof. Is extremely accurate.

The holes 5a and 5a 'penetrating the first mold body 5 are
When the second mold body 7 shown in FIG. 2 is molded, the mold material is provided so as to be in close contact with the mold body 7 so that the mold material is not injected and the top and bottom are not separated.

Next, in the plug with a cable of the present invention, the respective parts that can be assembled by such accurate positioning will be sequentially described.

3 (1) to (6) are configuration diagrams showing an embodiment of the housing 1 used in the plug with cable of the present invention, (1) is a front view, (2) is a rear view, and (3). ) Is a top view, (4) is a bottom view, (5) is a right side view, and (6) is a left side view. In the drawing, 10 is a groove for mounting the earth metal fitting 2, 11, 12, 13 are holes for mounting the earth metal fitting 2, and 11a.
Is a mounting member for the grounding fitting 2, 12a and 13a are mounting members for the grounding fitting 2, 14 and 14 'are mounting holes for the octal pins 3, 3', and 14a, 14b and 14a ', 14b' are octal pins 3,
3'mounting member, 15 is hole for mounting 2 pole pin 4, 1
Reference numerals 5a, 15b, 15c and 15d denote members for mounting the bipolar pin 4.

As shown in FIG. 3 (1), on the front surface of the housing 1,
Grooves and holes are formed for attaching the grounding metal 2, the octal pins 3 and 3 ', and the bipolar pin 4.

That is, in order to attach the earth metal fitting 2 from the front side,
The mounting groove portion 10 of the earth metal fitting 2, the mounting hole portion 11 that is connected to the groove portion 10 and penetrates rearward, and is also connected to the groove portion 10, but to the inside of the mounting members 12a and 13a provided on the rear side. Extended mounting holes 12 and 13 are provided.

Also, in order to attach the octal pins 3, 3'from the rear,
Holes 14 and 14 'for mounting the octal pins 3 and 3'that penetrate from the front side to the rear side are provided.

Similarly, in order to mount the two-pole pin 4 from the rear side, a mounting hole portion 15 for the two-pole pin 4 penetrating from the front side to the rear side is provided.

Then, as shown in detail in FIGS. 3 (2) to 3 (6),
The earth metal fitting 2 is fixed by a mounting member 11a that surrounds the mounting hole portion 11 penetrating to the rear surface side of the housing 1 and mounting members 12a and 13a having mounting hole portions 12 and 13.

Similarly, the octal pins 3 and 3'include a pair of mounting members 14a, 14b and 14a provided on the circumference in the vicinity of the mounting hole portions 14 and 14 'penetrating to the rear surface side of the housing 1. ',14
It is fixed by b '.

When connecting the two-pole pin 4 to the cable 6, one pole is directly connected and the other pole is connected via a lug.
A pair of mounting members 15a, 15b provided in the vicinity of 15
And the lug mounting members 15c and 15d.

4 (1) to (5) are configuration diagrams showing an embodiment of the grounding metal fitting 2 used in the plug with cable of the present invention, (1) is a front view, (2) is a right side view, (3) is a left side view, (4) is a top view, and (5) is a bottom view. In the drawings, 2a and 2b are contact parts with the outer of the jack, 2c are connection parts with the core wire of the cable 6, and 2d and 2e are fixing parts with mounting members 12a and 13a provided on the rear surface of the housing 1. .

The earth metal fitting 2 has a shape as shown in FIGS. 4 (1) to (5), and has a connecting portion 2c with the core wire of the cable 6 and a mounting member 12a provided on the rear surface of the housing 1.
By the fixing portions 2d and 2e with the 13a, they are fixed in an airtight state without a gap.

That is, as shown in detail in FIGS. 4 (2) to (5), the earth metal fitting 2 is formed such that the connecting portion 2c with the core wire of the cable 6 is longer than the main body portion of the housing 1. As shown in detail in FIGS. 3 (2) to 3 (6), the mounting hole penetrated to the rear surface side of the housing 1.
It is press-fitted and fixed to a mounting member 11a that surrounds 11.

Further, the fixed portions 2d, 2e have mounting holes 12, 13 on the front surface side of the housing 1 and are pressed into the mounting members 12a, 13a whose surfaces (rear surfaces) are sealed at the rear. Fixed.

5 (1) to (3) are views for explaining a state in which the grounding metal fitting 2 is press-fitted into the housing 1 in the plug with cable of the present invention, and (1) and (2) show the core wire of the cable 6. The connecting portion 2c is pressed into the mounting member 11a of the housing 1, and (3) shows the fixed portion 2d (2e) thereof being pressed into the mounting member 12a (13a) of the housing 1.

As shown in detail in FIGS. 5 (1) and 5 (2), in the cable-equipped plug of the present invention, the dimension of the hole 11 provided in the mounting member 11a of the housing 1 is determined by the connection of the ground metal fitting 2. Set slightly smaller than part 2c.

Therefore, when press-fitting the earth metal fitting 2, the cable 6
The four circumferences of the connecting portion 2c with the core wire of the
It is in close contact with 1.

Therefore, at the time of the first molding process, the molding material is surely prevented from flowing out from the joint portion between the two, and not only the appearance is beautiful, but also the contact failure does not occur when the connector is connected.

The mounting member 12a (13a) of the housing 1 is the fifth
As shown in Fig. (3), the rear end face is sealed in advance so that the molding material does not flow out, so even if the fixing part 2d (2e) of the grounding metal fitting 2 is press-fitted, the molding material will flow out. Has nothing to do with.

The earth metal fitting 2 is press-fitted into the housing 1 member in such a state, and is accurately held at a predetermined position.

6 (1) and 6 (2) are views showing an example of the octal pin 3 used in the plug with a cable of the present invention,
(1) is a side view and (2) is a rear view. In the drawing, 3a indicates a contact portion of the octal pin 3, and 3b indicates a protruding portion.

FIGS. 7 (1) and 7 (2) are views showing an example of the bipolar pin 4 used in the plug with cable of the present invention. FIG. 7 (1) is a side view and FIG. 7 (2) is a rear view. In the drawing, 4a is 2
Center pin of pole pin 4, 4b is an insulator, 4c is an outer,
4d is a large diameter part, 4e is a connection lug, and 4f is an insulator.

Octalpin 3 shown in Fig. 6 (1) and (2)
(3 ') and 2-pole pin 4 shown in (1) and (2) of FIG.
Is a structure similar to the conventional one.

8 (1) to (3) are views for explaining a state in which the octal pin 3 is press-fitted into the housing 1 in the plug with a cable of the present invention. (1) is a state before press-fitting, (2) is after press-fitting. Is a side view, and (3) is a rear view thereof.

As already described in detail with reference to FIG. 3, the housing 1 has a mounting hole 14 (1
4 ') and a set of two mounting members 14a, 14b (14a', 14b ') arranged on the circumference are provided in the vicinity thereof.

The octal pin 3 (3 ') is press-fitted from the rear of the housing 1 as shown by the arrow in the state where the contact portion 3a side thereof is at the head, as shown in FIG. 8 (1). In this case,
The corresponding core wire of the cable is previously soldered to the octal pin 3.

Then, as shown in FIGS. 8 (2) and 8 (3), the protrusion 3b provided at the rear end of the octal pin 3 is fitted with the notch provided in the mounting members 14a, 14b of the housing 1. When fitted together, the octal pin 3 is held in place by the mounting holes 14 in the housing 1 and these mounting members 14a, 14b.

Also in this case, if the diameter of the mounting hole portion 14 of the housing 1 is set to be slightly smaller than the outer diameter of the contact portion 3a of the octal pin 3, the contact portion between the mounting hole portion 14 and the octal pin 3 is formed.
Can be closely attached to 3a.

Therefore, even at this position, the mold material is surely prevented from flowing out from the joint portion between the two at the time of the first molding process, and not only the appearance is beautiful, but also the contact failure may occur at the time of connection with the connector. Absent.

This relationship is based on the mounting hole 15 for the bipolar pin 4 of the housing 1.
The same applies to the bipolar pin 4.

The two-pole pin 4 is held by the attachment members 15a, 15b, 15c, 15d of the two-pole pin 4 of the housing 1.

When assembling, to the mounting hole 15 of the housing 1,
From the rear side, the center pin 4a of the two-pole pin 4 is pressed into the front side.

Then, the two-pole pin 4 has a large diameter portion 4d of the outer pin.
Are clamped by the mounting members 15a and 15b of the housing 1.

FIG. 9 is a view for explaining a state in which the bipolar pin 4 is press-fitted into the housing 1 in the plug with cable of the present invention.

As shown in FIG. 9, in the two-pole pin 4, the large diameter portion 4d at the rear end of the outer 4c is press-fitted to a position where the rear surface of the housing 1 comes into contact, and the connection lug portion 4e is attached to the housing 1. It is held and fixed by the step provided on the working member 15d. The mounting member 15c functions to prevent the bipolar pin 4 from rotating.

With the cable-equipped plug of this invention, the housing 1, the grounding metal member 2, and the grounding metal 2 which constitute the plug are manufactured through the above steps.
After assembling the octal pin 3 (3 ') and the bipolar pin 4,
The first molding process (process of the first mold body 5 in FIG. 1) is performed, and then the final mold process (process of the second mold body 7 in FIG. 2) is performed to make the second mold process.
Make a plug as shown.

As already described in detail, the mounting hole portion 11 of the grounding metal fitting 2 and the octal pin are mounted so that the housing 1 and the grounding metal fitting 2 or the octal pin 3 (3 '), the two-pole pin 4, etc. can be mounted in close contact with each other. 3 (3 ') mounting hole 14 (1
4 ') The holes such as the mounting holes 15 of the bipolar pin 4 and the mounting members are improved, and in particular, the molding material is configured not to flow out during the first molding process.

In the above embodiments, the case of the plug having three pins has been described, but it is clear that the same can be applied to the case where there are two or four or more pins. Needless to say, it is not limited to the above case.

[Effect of device]

According to the plug with a cable of the present invention, it goes without saying that at the final step of molding (processing of the second molded body 7 in FIG. 2), before the first molding processing (first (When processing the first mold body 5 in FIG. 1),
The inconvenience that the molding material flows out to the connection surface side of the plug is surely prevented.

Moreover, assembling the housing and each pin of the plug is performed after connecting each pin of the plug and the core wire of the cable and completing the inspection, so that reliability and yield are remarkably improved, and many other excellent features are obtained. A practical effect can be obtained.

[Brief description of drawings]

FIGS. 1 (1) and 1 (2) are configuration diagrams showing an embodiment of a main part of a plug with a cable according to the present invention, in which (1) is a front view, (2) is a bottom view, and FIG. ) And (2) are configuration diagrams showing an embodiment of a plug with a cable of the present invention, (1) is a front view, and (2)
Is a bottom view, FIGS. 3 (1) to (6) are configuration diagrams showing an embodiment of the housing 1 used in the plug with a cable of the present invention, (1) is a front view, and (2) is a rear view. Fig. 3, (3) is a top view, (4) is a bottom view, (5) is a right side view, (6) is a left side view, and Figs. 4 (1) to (5) are plugs with a cable of the present invention. 1 is a front view, (2) is a right side view, (3) is a left side view, (4) is a top view, (5). Is a bottom view, FIGS. 5 (1) to 5 (3) are views for explaining a state in which the grounding metal fitting 2 is press-fitted into the housing 1 in the plug with cable of the present invention, and FIGS. 6 (1) and 6 (2) are , A diagram showing an example of the octal pin 3 used in the plug with a cable of the present invention,
(1) is a side view, (2) is a rear view, and FIGS. 7 (1) and (2) are views showing an example of a bipolar pin 4 used in the plug with a cable of the present invention. Is a side view, (2) is a rear view, and FIGS. 8 (1) to (3) are views for explaining a state in which the octal pin 3 is press-fitted into the housing 1 in the plug with a cable of the present invention, and FIG. In the plug with cable of the present invention, a diagram for explaining a state in which the bipolar pin 4 is press-fitted into the housing 1, and FIG. 10 is a circuit diagram showing an example of connection of the conventional plug with cable. In the drawings, 1 is a housing, 2 is a grounding metal, 3 and 3'are octal pins, 4 is a bipolar pin, 5 is a first molded body, 6 is a cable, and 7 is a second molded body.

Claims (1)

[Scope of utility model registration request] 1. A housing (1) in which a plurality of pins (3,3 ', 4), a grounding metal (2), and the pins (3,3', 4) and the grounding metal (2) are fixed. ) And the pins (3,3 ′,
4) and a cable (6) to which core wires corresponding to the grounding metal (2) are connected, respectively, and a first molded body (5) integrally molded so as to cover the outer periphery of the plug connection portion, and further the first molded body (5). A second mold body (7) integrally molded so as to cover the entire outer periphery of the mold body (5), and the grounding metal fitting (2) is previously press-fitted and fixed from the front side of the housing (1). The connecting portion of the grounding metal fitting (2) is connected to the corresponding core wire of the cable (6), and the pins (3, 3 ′, 4) are connected to the corresponding core wires of the cable (6), respectively. The pins (3, 3 ', 4) are press-fitted and fixed from the rear of the housing (1), and the entire plug assembly is integrally formed by molding to form the first and second mold bodies (5). And 7), wherein the housing is Gu (1) has a grounding fitting (2) on its front
(10) for mounting a mounting hole, a mounting hole (11) for the grounding metal fitting (2) that is partially connected to the groove (10) and penetrates rearward, and a mounting hole (12) that does not penetrate rearward. , 1
3), a member (11a) for mounting the earth metal fitting (2) provided on the rear surface in the vicinity of the hole (11), and a plurality of pins (3, 3 ') penetrating from the front surface to the rear surface. , 4) are press-fitted from the rear, and the holes (14, 14 ', 15) and the holes (14, 14', 15)
15) and a mounting member (14a, 14b, 14a ', 14b', 15a to 15d) for mounting the pins (3, 3 ', 4) provided on the rear surface thereof, and the earth metal fitting (2) is , The contact portions (2a, 2b) that come into contact with the outer of the jack and the groove portion (1) of the housing (1).
0), a connecting part (2c) connected to the fitting part, penetrating the rear surface of the housing (1), and connecting with a corresponding core wire of the cable (6); (1) A fixing part (2d, 2e) fixed inside the mounting member (12a, 13a) provided on the rear surface, and the pin (3, 3 ', 4) is previously formed at its rear end. Plug with cable, characterized in that it is connected to the corresponding core of the cable (6).