JPS5816755B2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved connector that is easy to assemble and suitable for miniaturization.

For example, connectors are widely used when connecting electrical devices such as telephones to cords, or when connecting cords to cords.

Most connectors of this type consist of a jack and a plug inserted into the jack.

These jacks. and the plug each have a built-in contact terminal formed in a mating structure.

When such connectors are used to connect cords, for example, plugs are inserted into jacks and their contact terminals are brought into contact to effect electrical connection.

However, with this structure, when attaching the cord to the connector, the cord terminal processing such as removing the outer and inner jackets and connecting the terminals and core wires is complicated, and furthermore, there are drawbacks such as difficulty in improving contact reliability. Ta.

Therefore, there is a method that simplifies the assembly process by removing only the outer sheath of the cord that is drawn into the connector, and driving contact terminals directly into the core wire from above the inner sheath.

However, although this method does not remove the inner sheath of the core wire, the outer sheath common to each core wire must be removed, and the terminal processing is still complicated.

Furthermore, since the contact terminal is driven in the middle of the core wire in the length direction, there is a risk that the core wire may be cut during implantation.

The present invention has been devised in consideration of these points, and provides a connector in which the terminal processing of the cord is simple, the structure of the contact terminal is simple, and the entire assembly is easy.

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

FIG. 1 shows a connecting cord 10 by means of a connector according to the invention.
This shows the state in which and 20 are connected.

The above connector has a plug 30 and a jack 4 that can be inserted and removed freely.
The plug 30 is composed of a plug housing 31 made of an insulating material and a contact terminal 32 located inside the plug housing 31, and the contact terminal 32 is connected to the core wires 10a to 10d of the connecting cord 10 as shown in FIG. The jack 40 is constructed of a jack housing 41 made of an insulating material and a contact terminal 42, to which a part of the connection cord 20 is connected.

When the plug 30 and jack 40 are connected, the contact terminals 32 and 42 are in contact with each other.

As shown in FIG. 3, the plug housing 31 has a rectangular cylindrical shape with a cord insertion hole 33.
3 are formed to protrude beyond the tip of the cord insertion hole 33 in its extension direction.

Then, on the tip side of the cord insertion hole 33, the wall portion 34.
A plurality of grooves 35a along the length of one of the inner walls of the hole located between the grooves 34.

35b, 35c, and 35d are provided.

Further, holes 36 and 37 are formed so as to face each other perpendicularly to the cord insertion hole 33 at a predetermined distance apart from the grooves 35a to 35d in the length direction.

Further, a bottomed hole 38 is bored on the outer surface corresponding to the inner wall of the hole facing the grooves 35a to 35d.

Furthermore, guide protrusions 39, 39 are provided on the outer surfaces of the outer walls 34, 34 along the length direction.

The connection cord 10 is inserted into the cord insertion hole 33 of the plug housing 31 configured in this way.

As shown in FIG. 2, this cord 10 has core wires 10a, 10b, and 10c covered with an inner sheath 13.

A so-called multi-core parallel cord in which the wires 10d are held in parallel by a common jacket 11 is used.

The tip of this cord 10 is cut to form a slope 12, and each core wire 10a is exposed to the slope 12.
A contact terminal 32 is provided at ~10d by overlaying with conductive metal.

The contact terminal 32 is positioned such that it reaches the grooves 35a to 35d and the slope 12 faces toward the grooves 35a to 35d.

In this state, a heated jig, for example, is inserted into the hole 38 of the plug housing 31 and the bottom thereof is pressed to bulge the inner wall of the cord insertion hole 33.

As a result, the position of the connection cord 10 is maintained.

Further, a stopper 50 having a U-shape and having outwardly directed protrusions 51 and 52 at both ends as shown in FIG. 3d is press-fitted into the hole 37.

As a result, the connection cord 10 is bent in the direction of the other hole 36 and is securely held.

On the other hand, Jack-no-Using 41 is shown in Figure 4.
It consists of a plug connecting part 44 having a hole 43 into which the plug 30 is inserted, and a terminal attaching part 45 that is parallel to the plug connecting part 44 and is formed at different levels.

Opposite inner walls of the hole 43 of the plug connecting portion 44 are provided with expandable claws 46, 46 that engage with the protrusions 39 of the plug housing 31.

Further, the wall surface of the hole 43 on the side of the terminal mounting portion 45 is removed over a predetermined range in the depth direction from the plug insertion end side, and the terminal mounting portion 45 is configured to partially match the open portion. Ru.

In the portion of the terminal mounting portion 45 that overlaps with the hole 43, there are grooves 47a, 47 parallel to the direction communicating with the hole 43.
b, 47c, and 47d are provided.

Stepped cord insertion holes 48 are provided in the bottom surfaces of the grooves 47a, 47b, 47c, and 47d so as to communicate with each other.

The cord insertion hole 48 has a large diameter portion that opens parallel to the depth direction of the hole 43 and in the opposite direction to the open end thereof.

The connection terminal 42 of this jack 40 is wire-shaped and made of an elastic metal wire, and this contact terminal 42 is attached in advance to the tip of the connection cord 20 and inserted into the cord inserter 48.

And grooves 47a, 47b, 4γc, 47 of the contact terminal 42
The part protruding toward the d side is bent and attached so as to fit into the hole 43 as shown in the figure.

When the plug 30 configured as described above is inserted into the jack 40, the protrusions 39, 39 push the claws 46 and 46 apart, and the protrusions 39, 39 engage with the claws 46, 46 at a predetermined position, ensuring that the plug 30 is inserted into the jack 40. Concatenated.

During this connection, the contact terminal 32 of the plug 30 is connected to the jack 4.
The electrical connection between the plug and the jack is completed when sufficient pressure is applied by contacting the contact terminal 42 of No. 0 and pressing and bending it.

When connecting the plug 30 and the jack 40, the contact terminals 42 are inserted into the grooves 35a and 35a of the plug housing 31, respectively.
35b, 35c, and 35d for reliable positioning.

Also, when removing the mutual connection, use the claws 46.4 of the jack 40.
6 by hand and pull out the plug 30.

The connector configured in this way has the jack 4 when connected.
The direction of the pressing force of the wire-shaped contact terminal 42 is the direction of the plug 3.
This pressure is applied obliquely to the moving direction of the contact terminal 32 of the plug 10, and this pressure is received by the inner wall of the hole 33 of the plug housing 31 via the outer sheath 11 of the connection cord 10.

Therefore, since the contact portions between the contact terminals 32 and 42 slide, sufficient contact can be obtained.

Furthermore, the wire-shaped contact terminal 4
The spring constant of 2 can be lowered.

Therefore, mutual contact pressure is always kept stable, resulting in high reliability.

In addition, this connector does not require any work such as removing the cover from the cord to form the contact portion of the plug, making terminal processing extremely simple.

Furthermore, the contact terminals can be formed by a simple method such as solder dipping, and no special terminal board or the like is required, so the structure is simple and costs can be reduced.

Furthermore, there is no need to swage the terminals as in the past, and therefore there is no accident of cutting the core wire.

Furthermore, since the contact terminals on the plug side and jack side come into sliding contact each time the plug and jack are attached or detached, for example, an oxide film on the surface is removed and the contact surface is always clean, and stable contact can be obtained in this respect as well.

Moreover, since the overall structure is simple, it is convenient for downsizing.

FIG. 5 shows another embodiment of the present invention, in which a wire-shaped contact terminal 42 is provided inclined toward the plug insertion opening of the shirt housing 41.

Therefore, in this case, a groove 49 is provided in the jack housing 41 in accordance with the extending direction of the wire-shaped contact terminal 42, and a groove 60 is also provided in the tip of the plug housing 31 corresponding to this groove 49. Only one is fine.

Reference numeral 70 denotes a stopper for fixing the cord 10 in the same manner as in the previous embodiment.

In this embodiment as well, not only can the same effects as in the previous embodiment be obtained, but also in this case the height of the jack housing can be kept low, which is more advantageous in terms of miniaturization.

As described above, according to the present invention, there is provided a connector suitable for miniaturization, which allows easy cord terminal processing, allows easy attachment of contact terminals without fear of core wire breakage, and always provides good electrical connection. can be provided.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a connector according to an embodiment of the present invention, Fig. 2 is a multi-core parallel cord taken out from Fig. 1, a is a perspective view, b is a front view, and Fig. 3 is a cross-sectional view showing a connector according to an embodiment of the present invention. Figure 4 shows the plug in Figure 1 taken out; a is a partially cutaway plan view; b is a front view; C is a side sectional view; Figure 4 shows the jack in Figure 1 taken out; a is a partially cutaway plan view; FIG. 5 is a side sectional view, b is a front view, C is a sectional view taken along the line C--C in FIG. 5, and FIG. 5 is a sectional view showing another embodiment of the present invention. i o-----Connection code, 10a, 10b, 10
c. 10d...Core wire, 11...Outer cover, 20
...Connection cord, 30 ...Plug, 3
1... Plug housing, 32... Contact terminal, 33... Cord insertion hole, 35a, 35
b, 35c, 35d-single groove, 40-...Jack, 41-...Jack housing, 42-...
・・Contact terminal, 43・・・・・−)L, 47a, 47
b. 47c, 47d...groove, 48...cord insertion hole.

Claims (1)

[Claims] 1. A connector consisting of a plug and a jack for electrically connecting connection cords to each other or to electrically connect the connection cord to electricity or a device, in which either the jack or the plug is connected to the end of the connection cord. A housing made of insulating material is fixed to the housing, and the housing is located inside this housing and is exposed on the end face of the connection cord. A connector comprising a contact terminal formed by overlaying on the end face of a core wire.