JPH0330273B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a connector for communication lines.

(Prior Art) In recent years, with the liberalization of communication lines, it has become possible to connect computers and the like directly to telephone lines without using an acoustic coupler or the like.

In such cases, a connector that can be easily attached and detached is required, but the connectors conventionally used in the United States and other countries have the following drawbacks.

That is, in the conventional one, a normal round wire was used for the contact spring 6, and a sleeve and a vinyl lead wire were provided between the contact 7 of the contact spring 6 and the terminal body 8 for connection. There are problems in that the increased number of connection points increases contact resistance and tends to cause poor contact.

Furthermore, since there are many connection points as described above, there is a problem that the assembly is difficult and hinders productivity improvement.

On the other hand, since telephones and the like come in two types, one with two lines and the other with four lines, there was a desire to use common parts instead of using different parts for these lines.

Furthermore, conventional indoor wiring is now φ0.65.
There are plans to make the wire thinner to φ0.4, so there was a need to create a structure that would allow reliable crimp retention even in such cases.

(Objective of the Invention) In view of the above, the present invention provides a communication system that can eliminate any connection points in the middle of the contact spring, improve the ease of assembling the contact spring, and allow parts to be shared for different numbers of lines. Its purpose is to provide line connectors.

(Structure of the Invention) In order to achieve the above object, in the present invention, a contact spring having a contact and a terminal body is integrally formed from a flat plate piece, and further, the contact spring has a contact spring having a contact body and a terminal body during press molding. residual tethers are formed to interconnect the ends;
The present invention is characterized in that the contact spring is assembled to the mounting portion of the base with the connecting portion left in place, and after the assembly is completed, the connecting portion is separated and separated from each other (Example). An embodiment of the invention will be described in detail with reference to the drawings.

In FIG. 1, numeral 1 indicates a base, which is made of synthetic resin and has a substantially rectangular shape.

Reference numeral 2 denotes a terminal block protruding from near the center of the base 1, and is shaped like a rectangular parallelepiped. In this example, four screw holes 3 for tapping are formed at predetermined intervals in the mounting portion 2a on the upper surface of the terminal block 2. Further, separators 2b are formed between the screw holes 3 and at both ends thereof.

A holding hole 2c is provided on the side of the terminal block 2 (right side in FIG. 1) into which a fixing claw 8c of a contact spring 6, which will be described later, is inserted.

Next, a mounting base 5 for mounting a jack housing 4, which will be described later, is provided at the left end of the base 1 in the drawing. The mounting base 5 consists of locking pieces 5a, 5a standing upright at a predetermined interval, and a substantially triangular locking pawl 5b is formed on the inside of the locking piece 5a. Note that the base 1, the terminal block 2, and the mounting base 5 will be collectively referred to as the base 13 hereinafter.

Next, the jack housing 4 will be explained.
The jack housing 4 has a rectangular tube shape as shown in FIG. Engagement portions 4a that can engage with the locking claws 5b are formed on both sides of the outer periphery of the jack housing 4. Furthermore, four holding grooves 4b are formed on the lower surface of the inner periphery of the jack housing 4 to insulate and hold the contacts 7 of the contact springs 6 from each other.

Next, the contact spring 6 will be explained.

As shown in FIG. 2, this contact spring 6 is a press-molded flat plate piece. The contact spring 6 mainly consists of a fastener 9 for connecting the contact 7 and the terminal main body 8 while maintaining their mutual positional relationship.

The tip of the contactor 7 (the right side in FIGS. 2 and 3) is bent upward at a predetermined angle as shown in FIG.

In this example, four terminal bodies 8 are formed at predetermined intervals as shown in FIG. Further, on the upper surface of this terminal main body 8, a substantially square-shaped convex portion 8a is formed facing each other so as to ensure a sufficient crimped state even for a core wire of a small diameter. Note that the reason why the shape is approximately bent is to ensure a crimping surface that is effective even with ordinary round washers. However, in this example, a rectangular washer 10 is used so as not to be affected by compression, stretching, etc. due to twisting during tightening. (In other words, if a square washer 10 is used, rotation is prevented by the separator 2b.) Next, washer receivers 8b are provided at both ends of the terminal body 8 (upper and lower parts in FIG. 2) to fold upward. A song is formed. This washer receiver 8b is used to ensure even tightening even when there is one or more connecting wires. , so that no misalignment occurs. (i.e.
In the past, measures were taken such as providing a separate terminal for tightening or using a special washer with a U-shaped cross section, but in this example, a normal flat washer 10 is used. Only by using it will the initial purpose be achieved. Note that a cap-shaped holding claw 8c for insertion into the holding hole 2c is formed at the front portion of the terminal body 8 (on the left side in FIGS. 2 and 3).
(See FIG. 4 for the shape.) Furthermore, soldering terminals 8d are provided on both sides of the holding claws 8c.

Next, a tether 9 is provided on the side of the terminal main body 8 (left side in FIGS. 2 and 3) for tying these together. This is left as a surplus portion during punching during press molding, and only the minimum necessary strip 9a for connection is left with respect to the terminal body 8. Further, the strip 9a is provided with a notch 12 for easy separation.

Next, the action and effect will be explained. first,
To explain the assembly, the base plate 13 is provided with four mounting portions 2a in this example, as shown in FIG. Therefore, it is possible to install four contact springs 6, but depending on the type of telephone, two may be sufficient. Therefore, in this example, in order to achieve economic efficiency and common parts, the case where four contact springs 6 are installed is set as the standard, and in other cases, the number of contact springs 6 installed is reduced. ing. (i.e. contact spring 6
Even if the number of mounting holes 2a is only two, the base 13 shown in FIG. The one shown in Figure 1 is used. ) On the other hand, when the contact spring 6 is press-molded, the following parts are commonly used.

That is, as mentioned above, since the base 1 and the jack housing 4 are the same whether it is a four-terminal or a two-terminal, the mutual spacing of the terminal bodies 8 during press molding should be the same. You can leave it there.

Therefore, in this example, in the first step of pressing,
First, the terminal body 8, the tether 9, and the soldering terminal 8d
is press-molded as shown in FIG. 8 (or FIG. 9) (in FIG. 8 or 9, the remaining portion 17a below the terminal body 8 remains a flat plate material.
What is shown in FIG. 8 or FIG. 9 is hereinafter referred to as the common original plate 17) is used as a common part, with four terminals,
It was decided to share the contact spring 6 of each of the two terminals.

Therefore, when molding, for example, a four-terminal contact spring 6, the remaining part of the flat plate piece of the common original plate 17 is further subjected to the second pressing step, and then the ninth
The contact 7 shown by the two-dot chain line in the figure is molded. In the case of two terminals, the molding position of the contactor 7 is changed and the contactor 7 is molded as shown by the dashed line in FIG. (During this second step, the half-bonded terminal 8d is also separated at the same time.) In this way, by using the same common base plate 17, whether it is a two-terminal or a four-terminal, the parts can be separated. Moreover, since the contactor 7 can be placed in the optimal position for two terminals and four terminals with respect to the remaining portion 17a, there is no waste due to common use of parts.

Incidentally, after the above-mentioned first and second steps are completed, the attachment 9 is cut off at a predetermined position and then assembled. In the case of four terminals, this disconnection is performed at the position shown by the broken line C-C in Figure 9, and in the case of two terminals, it is performed at the positions shown by the broken lines B-B, CC, and D-D in Figure 8. .

In this example, the pressing is divided into a first step and a second step, but if necessary, these steps can be performed in a single step.

Next, the assembly process will be explained. First, in the state where the above-mentioned pressing process has been completed, the terminal body 8
is in a state as shown in FIG. 2, for example. (Although a part of the soldering terminal 8d is shown in the figure, it is assumed that this has been cut off. Also, in the case of two terminals, there are only two terminal bodies 8 as shown by the solid line in Fig. 2. ) Then, the assembly is carried out, and during this assembly,
The contact spring 6 is assembled to the base plate 13 without the connection 9 being separated. (In other words, the mutual spacing of the terminal bodies 8 is
Since the spacing is the same as that of , it is possible to assemble it to the base 13 as is. ) During this assembly, the holding claw 8c is press-fitted into the holding hole 2c. Therefore, even in this assembled state, the contact spring 6 is maintained in an appropriate state with respect to the base plate 13.

Next, the jack housing 4 is attached to the mounting base 5.
It can be assembled against. This can be done by simply inserting the jack housing 4 into the mounting base 5. Then, the engaging portion 4a engages with the locking claw 5b and is firmly held. The contact 7 of the contact spring 6 is sandwiched between the jack housing 4 and the mounting base 5 and is more securely fixed.

Next, in this fixed state, the tether 9 is separated. This is done by setting the base 13 on a cutting jig (not shown) and then cutting it off using four cutters provided on this jig. The cutting edge of this cutter descends slightly to the right (to the left in FIGS. 2 and 3) from the end surface of the terminal body 8, and is capable of shearing between it and the end surface of the mounting portion 2a of the terminal block 2. It is set. Therefore, the end face of the terminal body 8 is not damaged in any way, and shearing can be performed satisfactorily.

Note that the cutting location is the part of the strip 9a that is made to the minimum necessary thickness, and the notch 12 is located exactly where the cutter's cutting edge comes into contact, so it is very easy to cut. Can be easily sheared.

Upon completion of this cutting, assembly of the contact spring 6 is completed. However, in this state, the contact 7 of the contact spring 6 is in an extended state as shown by the solid line in FIG. Fold it as shown by the imaginary line in Figure 1. Then, the assembly work is completed by attaching the SEMS type screw 11 having the washer 10 and covering it with the cover 15 (not shown in FIG. 1).

Next, the work of tightening the cord to the terminal body 8 will be explained.

First, when the screw 11 is loosened, a space for inserting the cord is created between the washer 10 and the convex portion 8a, as shown by the imaginary line in FIG. Therefore, the cord C1 and the cord C2 are inserted into this space and the screw 11 is tightened. Of course, if only one cord is required, for example, only the cord C1 may be inserted and tightened.

However, since conventional terminals were simply tightened using round washers, there was a problem in that it was very difficult to tighten multiple cords to the same terminal.
(Conventionally, this has been dealt with by providing multiple terminals, etc.) However, in this example, the washer receiver 8b is provided and a square washer (washer 10) is used, so the washer 10 is a washer receiver. Supported by 8b, horizontal tightening is always possible, and the washer 10 does not rotate during tightening. Therefore, even if the number of cords is two, tightening can be performed extremely easily. Moreover, since the washer receiver 8b is provided on the terminal main body 8 side, a normal flat washer can be used. Further, since the terminal main body 8 is provided with a convex portion 8a formed in a U-shape, it is possible to securely tighten even a cord having a small diameter.

The final assembled state is shown in FIGS. 5 and 6. Here, 15 indicates a cover, and 16 indicates a composite CR for testing. (The connector after this final assembly is hereinafter referred to as the connector 14.) As described above, in this example, the contact spring having the contact piece and the terminal body is integrally formed from a flat plate piece, so that the communication line can be connected. This makes it possible to improve the reliability of the connector 14 and the ease of assembly.

In addition, in this example, as shown in FIG.
Although the description has been given of a type in which a plug type connector is inserted from the side of the connector 14, it is of course applicable to other types of connectors such as a type in which a male connector is inserted from the top of the connector 14. .

(Effects of the Invention) As described above, according to the present invention, a jack housing to which a plug connected to a cord attached to a communication device is attached, a holding portion for holding the jack housing, and a communication device are provided. A base is provided with a terminal block to which electric wires from the line are connected, and a contact element is formed at the distal end to be held in a plurality of holding grooves formed in the jack housing, while a base end is formed from the base end. In a communication line connector having a contact spring formed with a terminal body that is screwed to a terminal block, the contact spring is made of a pressed conductive metal flat plate having elasticity, and each terminal body is connected to the contact spring. The contact springs are formed so that they can be cut out in units of the required number, for example, two or four, equal to the number of electric wires from the communication line, from the state where they are connected in a chain at the part. The contacts are held in a plurality of retaining grooves formed in the jack housing, and each terminal body is screwed to the terminal block, and then the connecting portion is separated from each terminal body, thereby forming a connector. Therefore, there is an effect that a plurality of types of connectors corresponding to the number of electric wires from the communication line to be connected can be manufactured extremely easily without reducing productivity.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an exploded perspective view mainly showing the base, contact spring, jack housing, square washers, and screws; FIG. 2 is a plan view showing the contact spring; Fig. 3 is a side view showing the contact spring, Fig. 4 is a front view showing the contact spring, Fig. 5 is a front sectional view showing the assembled state inside the connector, and Fig. 6 is a side sectional view showing the assembled state inside the connector. , Fig. 7 is a view from arrow A showing how the cord is tightened to the terminal body, Fig. 8 is an explanatory drawing explaining the difference between the first and second pressing steps for two terminals, and Fig. 9 is a view for four terminals. FIG. 2 is an explanatory diagram illustrating the difference between the first and second steps of the press. DESCRIPTION OF SYMBOLS 1... Base, 2... Terminal block, 2a... Mounting part, 2b... Separator, 4... Jack housing, 6... Contact spring, 7... Contact, 8... Terminal body, 9... Connect, 13...
Base, 14...connector.

Claims (1)

[Scope of Claims] 1. A jack housing to which a plug connected to a cord attached to a communication device is attached, and a holding portion for holding the jack housing and to which an electric wire from a communication line is connected. A base provided with a terminal block, a contact element held in a plurality of holding grooves formed in the jack housing at the tip end, and a terminal screwed to the terminal block at the base end part. In a communication line connector mainly composed of a contact spring formed with a main body, an elastic conductive metal flat plate is pressed, and the respective terminal bodies are connected in a chain at a connecting part. In this state, it is formed so that it can be cut out in units of a number corresponding to the number of electric wires from the communication line, and in the state where it is cut out in units of the number, each of the contacts is inserted into a plurality of holding grooves formed in the jack housing. A communication device comprising a contact spring that is held and formed so that the connecting portion can be separated from the terminal body after each terminal body is screwed to the terminal block. Connector for line.