JP2000348789A - Modular jack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a wire to a terminal plate with an impact tool by removing a lever while allowing plural wires to be connected together by the lever. SOLUTION: For a connection base 20, a plug insertion hole 21 for inserting a modular plug is opened, and a terminal board 10 is projected from the rear surface of the connection base 20. Terminal plates 11 each electrically connected to a contact 12 and provided with a press-contact slit 11a are formed side by side on the terminal board 10. A pivot hole 24 is formed in the rear surface of the connection base 20, and a fulcrum projection 33 of a lever 30 is inserted into and extracted from the pivot hole 24. When the lever 30 is pushed down with the fulcrum projection 33 inserted in the pivot hole 24, a wire can be pushed into the press-contact slit 11a at a press-in part 32, and when the lever 30 is removed from the connection base 20, wiring work can be carried out by using an impact tool.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modular jack provided with a terminal plate having a press-connecting slit, wherein an electric wire, which is an insulated wire, is pushed into the press-pressing slit of the terminal plate for connection.

[0002]

2. Description of the Related Art Conventionally, when a LAN (Local Area Network) using Ethernet is constructed, a twisted pair cable is used for a relatively short distance transmission line. Twisted pair cables are thinner and easier to bend than coaxial cables, so wiring is easier, and twisted pair cables have the advantage of being less expensive than coaxial cables. For example, in 10BASE-T, a 4-pair to 8-core twisted pair cable in which four pairs of twisted pair wires are housed in a sheath is used.

[0003] As a terminal block for connecting this kind of twisted pair cable, there is known a terminal block provided with a terminal plate having a press-contact slit. The terminal plate is formed in a forked fork shape having a pressure contact slit opened at one peripheral edge.When each wire constituting the twisted pair cable is press-fitted into the pressure contact slit, the insulation coating of the electric wire is formed at the peripheral edge of the pressure contact slit. It is cut so that the core wire is pressed against the periphery of the pressure-contact slit. The width of the pressing slit is set smaller than the diameter of the core wire of the electric wire.

[0004] By the way, a relatively large force is required to press-fit an electric wire into the press-contact slit. In addition, since one type of terminal plate is used for a plurality of types of electric wires having different core diameters, the force required for press-fitting increases as the core diameter increases.

[0005] As described above, since a large force is required, the electric wire is pushed into the press-contact slit by using a special tool generally called an impact tool. However, since the impact tool can connect only one wire at a time,
Connecting a plurality of electric wires to the terminal plate is troublesome and time-consuming.

Therefore, as described in Japanese Patent Application Laid-Open No. 9-232022, a housing provided with a terminal block on which a terminal plate having a pressure contact slit is disposed is provided with a position for covering the terminal block and a position for opening the terminal block. It is envisaged to provide a lever pivotally mounted on the housing so as to undulate between them. The lever has a function of aligning a plurality of electric wires, and has press-fit portions located on both sides in a thickness direction of the terminal plate when the cover is tilted so as to cover the terminal block. Pushes the electric wire into the press-fitting slit. By providing such a lever, a plurality of electric wires can be collectively connected to the terminal plate, and furthermore, the lever can be used to push the electric wires into the press-contact slit with a relatively small force.

[0007]

However, in the configuration in which the lever is pivotally connected to the housing as described above, since a plurality of electric wires are connected to the terminal plate at a time, the number of wires is lower than that of a standard twisted pair cable. If a wire having a large diameter is used, a very large force is required to depress the lever, and in some cases, the use of the impact tool may improve the workability.

The present invention has been made in view of the above circumstances, and an object of the present invention is to use a lever so that a plurality of wires can be collectively connected to a terminal plate, but the lever may be removed depending on the work content. Another object of the present invention is to provide a modular jack capable of connecting an electric wire to a terminal board by an impact tool.

[0009]

According to the first aspect of the present invention, there is provided a housing in which a plug insertion opening for inserting a modular plug is opened, and a plurality of housings arranged in the plug insertion opening and capable of contacting the contacts of the modular plug. A contact, a plurality of terminal plates which are electrically connected to the respective contacts and are provided with a press-fitting slit to which an electric wire which is an insulated wire is connected, and which are provided upright on a terminal block provided in the housing; A lever having an operation plate capable of covering at least a portion where the terminal plate is provided, and a lever having a press-fitting portion for pushing an electric wire into a press-contact slit on both sides in a thickness direction of the terminal plate, the protrusion being provided on the operation plate; A fulcrum projection is protrudingly provided on the portion, and the fulcrum projection is removably inserted and abuts a part of the fulcrum projection to support the lever when the electric wire is pushed into the press-fitting slit by the press-fitting portion. In which pivot bearing hole is formed in said housing. According to this configuration, if the fulcrum projection provided on the lever is inserted into the pivot hole of the housing and the lever is depressed, the wire can be pushed into the press-contact slit of the terminal plate by the press-fit portion, and another tool is used. Connection work can be performed without the need. On the other hand, since the fulcrum projection of the lever can be freely inserted into and removed from the pivot hole of the housing, the lever can be easily separated from the housing, and when the lever is separated from the housing, the terminal board is exposed and the impact is made. Wiring work using tools such as tools becomes possible. That is, it is possible to select a connection work method according to the type of electric wire and the like, and it is possible to provide an easy-to-use modular jack.

According to a second aspect of the present invention, in the first aspect of the present invention, the terminal plates are arranged on a straight line in a plane including the moving direction of the lever, and the thickness direction is perpendicular to the straight line. They are arranged. According to this configuration, the wires can be sequentially pushed into the terminal boards arranged in line as the lever is tilted, and the force acting on the lever can be reduced as compared with the case where the wires are pushed into many terminal boards at the same time. it can. That is, the connection operation using the lever can be performed with relatively small force.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the terminal block is engaged with a portion of the lever that is different from the one end where the fulcrum projection is provided. Part is formed. According to this configuration, since the lever is engaged with the terminal block in a state where the lever is placed on the terminal block, the terminal plate can be protected by covering the terminal plate with the lever, and the wire can be pressed by the lever because the electric wire is pressed by the lever. Can be prevented from coming off along the wire.

According to a fourth aspect of the present invention, in the second aspect of the present invention, at least one side of the terminal plates arranged in a straight line in the thickness direction has a guide wall projecting from the terminal block with a larger dimension than the terminal plate. The guide wall is formed with a holding slit for guiding an electric wire to a press-contact slit provided in the terminal plate. According to this configuration, the introduction of the electric wire into the holding slit facilitates the introduction of the electric wire into the press contact slit, and as a result, the work of connecting the electric wire becomes easy. In particular,
Since the holding slit can be formed wider than the pressing slit, it is possible to easily guide the electric wire to the pressing slit while easily introducing the electric wire into the holding slit.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, a projecting piece protrudes between adjacent holding slits in the guide wall. According to this configuration,
By inserting the twisted portion into the projecting piece when the electric wire is a twisted pair wire, the tip of the twisted pair wire can be separated and introduced into the press-fitting slit, thereby facilitating the connection work.

According to a sixth aspect of the present invention, in the first to fifth aspects of the present invention, a part of each electric wire is inserted into a portion of the press-fitting portion of the lever corresponding to each press-fitting slit, so that A latch groove for preventing displacement of the lever is formed. According to this configuration, when the lever is tilted, the hook groove prevents the electric wire from being displaced with respect to the lever, so that the electric wire can be positioned and introduced into the press-contact slit, and the electric wire slides against the lever. Since the force applied to the lever can be efficiently used for press-fitting of the electric wire without any trouble, there is a possibility that the electric wire can be press-fitted with a smaller force than when no hook groove is provided.

According to a seventh aspect of the present invention, in the first to sixth aspects of the present invention, a distance from the fulcrum projection to a portion farthest from the fulcrum projection in a state of being detachably fitted to the lever and fitted to the lever. Is provided with an auxiliary lever larger than the lever. According to this configuration,
The use of the auxiliary lever makes it possible to increase the distance from the point of force to the fulcrum projection than when the lever is used alone, and the principle of leverage enables connection with a relatively small force. In addition, since the auxiliary lever is detachable from the lever, the space occupied by the auxiliary lever does not increase if the auxiliary lever is removed during use other than during connection. Further, since the auxiliary lever is detachable from the lever, the auxiliary lever can be shared by a plurality of modular jacks.

According to an eighth aspect of the present invention, in the first to seventh aspects, the terminal block includes a connection board having a through hole, and one end of the terminal plate is press-fitted into the through hole. A connection piece is projected, and a cut groove having a surface orthogonal to a projecting direction of the connection piece is formed in a portion of the side edge of the terminal plate near the connection piece. According to this configuration, when the connection piece of the terminal plate is pressed into the through hole of the connection board, a force is applied at a portion corresponding to the cut groove,
The force can be applied in a relatively large area, and the work of press-fitting the terminal plate becomes easy.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIGS. 1 and 2
As shown in FIG. 1, the present embodiment shows an example in which a terminal block 10 on which a terminal plate 11 having a pressure contact slit 11a is arranged is provided in a modular jack.

The modular jack shown has a rectangular parallelepiped connection base 20, and a plug insertion opening 21 for inserting a modular plug is opened on one surface of the connection base 20. Below,
The surface of the connection base 20 where the plug insertion opening 21 is opened is the front surface, and the vertical direction is defined using the vertical direction in FIG. A plug insertion port 2 is provided at the lower rear of the connection stand 20.
1 is opened, and the front end of the terminal block 10 is inserted into the assembly hole 22. That is, the terminal block 10 is coupled to the connection block 20 so as to protrude from the rear surface of the connection block 20, and the terminal block 10 and the connection block 20 form a housing. The assembling holes 22 are provided with the holding grooves 2 in the front-rear direction on both lower sides.
2a, an introduction port 22b for introducing a contact 12 to be described later into the connection base 20 is opened above the assembly hole 22. A connection frame 23 is provided on the lower surface of the connection base 20 so as to project rearward of the connection base 20. A pair of left and right pivot holes 24 are formed in the upper part of the rear surface of the connection base 20. Pivot hole 24
The lower surface is an inclined surface 24a which is inclined upward from the opening surface toward the inside, and the upper surface of the pivot hole 24 is a stop surface 24b orthogonal to the opening surface.

A plurality of terminal blocks 10 (eight in this embodiment)
Connection board 13 to which the terminal board 11 is connected, a base 14 laminated on the lower surface side of the connection board 13, and the connection board 1
3 and a holding base 15 that is stacked on the upper surface side and holds all the terminal boards 11.

The connection board 13 is a printed wiring board and extends to the inside of the connection base 20. A portion of the connection board 13 inserted into the connection base 10 is a modular board inserted into the plug insertion opening 21. A contact 12 that contacts the contact of the plug is attached. Contact 12
Is formed on a lower surface of a front end portion of the connection board 13 and is detoured from a front surface of the connection board 13 and is inclined rearward to be separated from the connection board 13 by a distance. Each terminal plate 11 and each contact 12 are electrically connected by a conductive pattern provided on the connection board 13. The eight terminal plates 11 are two on each of the right and left sides of the connection board 13.
Arranged in columns. Each row of the terminal boards 11 is orthogonal to the thickness direction of the terminal boards 11, and the left and right rows of the terminal boards 11 are arranged in the thickness direction of each terminal board 11. Each terminal plate 11 has a press-contact slit 11a opened at the upper edge, and a connection piece 11b connected to the connection board 13 is extended at a lower portion, and each is formed in a forked shape. The connection piece 11b is connected to the connection board 13 by soldering or press fitting while being inserted through the connection board 13.

The front end of the base 14 is inserted into an assembling hole 22 of the connection base 20, and a coupling projection 14 b is formed on the lower surface of the base 14 to engage with a coupling frame 23. Thus, when the front end of the base 14 is inserted into the assembly hole 22 of the connection base 20,
The step 14 a provided at the front end of the base 14 is
And the base 14 is prevented from moving forward with respect to the connection table 20 by contacting the rear surface of the base. At this time, the coupling projection 14
The rearward movement of the base 14 with respect to the connection base 20 is prevented by the engagement of the b with the coupling frame 23. In this state, the base 14 is prevented from moving back and forth with respect to the connection base 20, and the front end of the base 14 is connected to the connection base 20.
Of the base 14 with respect to the connecting stand 20 is also prevented. Base 14
A groove 14c is formed in the upper surface of the terminal board 11 for inserting the tip of the connection piece 11b in each row of each terminal board 11.

The holding base 15 is a member for holding the terminal plates 11 in an aligned state, and a connection piece 11b of the terminal plate 11 projects from the lower surface of the holding base 15. That is, the terminal plate 1
1 are connected to the connection board 13 while being positioned with respect to each other by the holding base 15. On the front surface of the holding base 15, positioning projections 15 a to be respectively inserted into a pair of positioning holes 25 formed on the rear surface of the connection base 20 are projected. Further, an alignment pin 1 is provided on the lower surface of the front portion of the holding base 15.
5b is protruded, and a connecting leg 15 is provided at the rear end of the holding base 15.
c is projected. The positioning pins 15b are inserted into positioning holes 13d and 14d, respectively, penetrating the connection board 13 and the base 14, and the connecting legs 15c are cutouts formed at the rear ends of the connection board 13 and the base 14, respectively. It fits into the parts 13e and 14e. A hook 15 that engages with the lower surface of the base 14 is provided at the distal end (lower end) of the connecting leg 15 c.
d is formed. Therefore, the alignment pins 15
b and the connection leg 15c, the connection board 13 and the base 14
Are aligned with the holding base 15, and the hook 15d
Are connected to each other.

As described above, the connection board 13 and the base 14
The terminal base 10 is formed by combining and integrating the base with the holding base 15, and the terminal base 10 is connected to the connection base 20. In a state where the connection board 13, the base 14 and the holding base 15 are joined, the rear surface is substantially flush, and the front surface of the base 14 and the holding base 15 is also substantially flush. However, the front portion of the connection board 13 projects forward from the front surfaces of the base 14 and the holding base 15. Spacers 14 protruding from the left and right side edges of the base 14 and the holding base 15 in a direction approaching each other.
f, 15f are provided, and a storage space for the connection board 13 is formed between the base 14 and the holding base 15 by the spacers 14f, 15f.

To connect the terminal block 10 to the connection block 20,
The front end of the connection board 13 is introduced into the holding groove 22a. At this time, the contact 12 is connected to the connection base 2 through the inlet 22b.
0 is inserted. When the terminal block 10 is inserted into the connection base 20 until the front surfaces of the base 14 and the holding base 15 contact the rear surface of the connection base 20, the assembly protrusions 14a are inserted into the assembly holes 22 and the positioning protrusions 15a are inserted into the positioning holes 25. Inserted. Further, the coupling protrusion 14b is coupled to the coupling frame 23. In this manner, the terminal block 10 is firmly fixed to the connection block 20.

On the upper surface of the holding base 15, the terminal base 2 is opposed to both sides in the thickness direction of each terminal plate 11.
A guide wall 16 having a protrusion dimension larger than that of the terminal plate 11 protrudes from the upper surface of the reference numeral 0. That is, the guide walls 16 are formed on both sides of each row of the terminal plate 11. Each guide wall 1
6, a holding slit 16a is formed at a portion of the terminal plate 11 corresponding to the pressure contact slit 11a and is open to the upper end edge of the guide wall 16. The width of the upper end of the holding slit 16a is wider toward the top, so that the electric wire can be easily introduced into the holding slit 16a. Therefore,
When each wire of the 4 to 8 core twisted pair cable is passed between the two center guide walls 16 and each wire of the twisted pair cable is introduced into the holding slit 16a and press-fitted in a state where the wires are aligned, the respective wires become terminal plate. 11 is pressed into the press contact slit 11a, and the electric wire and the terminal plate 11 are electrically connected. The guide wall 16 may be provided only on one side of the terminal plate 11 in the thickness direction.

Here, since the electric wire is easily bent and it is difficult to press-fit it by hand, the press-contact slit 1 of the terminal plate 11 is formed.
In this embodiment, a lever 30 is provided to facilitate the work of pressing the electric wire into the wire 1a. The lever 30 is provided with an operation plate 31 formed to a size enough to cover the upper surface of the holding base 15.
Is inserted between the pair of guide walls 16 provided on both sides of each row of the terminal board 11 on a surface facing the holding base 15 when the holding base 15 is covered by the operation plate 31. Press-fit portion 32 is provided in a protruding manner. An insertion groove 32 a into which the upper end of the terminal plate 11 is inserted is formed in the press-fit portion 32. In addition, since the shape of the press-fitting portion 32 is simple, a mold for molding the lever 30 can be easily manufactured, and an increase in mold cost can be suppressed. The operation plate 31 is provided at the front end of the press-fitting portion 32.
A fulcrum projection 33 protruding forward from the front end of the boss is provided.

The fulcrum projection 33 is inserted into the pivot hole 24 provided in the connection stand 20, and when the operation base 31 covers the holding base 15, the upper and lower surfaces of the fulcrum projection 33 are upper and lower surfaces of the pivot hole 24. It is formed so as to substantially match with.
That is, when the operation plate 31 covers the holding base 15, the lower surface of the fulcrum projection 33 is an inclined surface 33 a that is inclined upward and forward, and the upper surface is a stop perpendicular to the rear surface of the connection base 20. It is a surface 33b. Further, the front surface of the operation plate 31 forms a guide surface 31a which is inclined upward toward the rear.

In the state where the electric wire X is introduced into the holding slit 16a as shown in FIG.
The stop surface 33b of the fulcrum projection 33 of the lever 30 is brought into contact with the rear surface of the connection base 20 as shown in FIG.
When the fulcrum protrusion 33 is introduced into the pivot hole 24 so that the guide surface 31a is arranged along the rear surface of the connection base 20 from a state in which the lever 30 is raised (that is, when the lever 30 is lowered), the connection base The electric wire X connected to the terminal plate 11 closest to 20 is pressed downward by the inclined surface 33 a of the fulcrum projection 33. As shown in FIG. 3D, when the lever 30 is tilted so that the fulcrum projection 33 is inserted deeper into the pivot hole 24, the electric wire X is pressed by the press-fitting portion 32 continuous to the inclined surface 33 a, and the terminal plate 11 Wire X
Is press-fitted. As shown in FIG. 4A, when the lever 30 is further tilted, by the time the connection of the electric wire X to the terminal plate 11 closest to the connection base 20 is completed, the press-fit portion 32 closes the second closest terminal plate 11. Wire X in the pressure contact slit 11a
The electric wires X are sequentially press-fitted into the press-contact slits 11a of the third and fourth terminal plates 11 by the press-fitting portion 32, and the electric wires X are inserted into all the terminal plates 11 as shown in FIG.
Can be press-fitted. In other words, the lever 30
The wires X are simultaneously pressed into the press-contact slits 11a of the terminal plates 11, and the wires X
The wire X can be press-fitted with a small force as compared with the case of press-fitting.

As described above, when the electric wire is pressed into the press contact slit 11a of each terminal plate 11 by tilting the lever 30, each terminal plate 11 is introduced into the insertion groove 32a formed in the press-fit portion 32. Therefore, the electric wires are pressed by the press-fit portions 32 on both sides in the thickness direction of the terminal plate 11, and the electric wires can be pushed into the press-contact slits 11a without bending the electric wires on both sides in the thickness direction of the terminal plate 11.

Here, the press-fitting portion 32 of the present embodiment has a length that covers all the terminal boards 11 arranged in a line, and the distal end surface of the press-fitting portion 32 is formed substantially in a straight line. Press-fit part 3
2 is formed substantially linearly as described above to form the insertion groove 32a over the entire length, so that the levers 30 of the same shape can be formed regardless of the number and pitch of the terminal plates 11.
Can be used.

As shown in FIG. 1, a pair of locking projections 34 project from the rear end of the operation plate 31 between the two press-fitting portions 32. A claw 34a is formed at the tip of the locking projection 34 as an engaging portion that protrudes away from each other. Also,
At the rear ends of the two inner guide walls 16 of the guide walls 16, claws 16 b that engage with the claws 34 a when the lever 30 is depressed are projected, and the claws 16 b and 34 a are engaged. By doing so, the lever 30 is fixed to the holding base 15. That is, the lever 30 is held by the terminal block 10 after the electric wire is connected to the terminal plate 11. Here, when the lever 30 is coupled to the terminal block 10, a projection 32b is formed on the outer surface of the press-fitting portion 32 to be inserted into each holding slit 16a so that the lever 30 does not move back and forth. I have. That is, nail 1
When the projections 32b are engaged with the holding slits 16a, the levers 30 are prevented from dropping backward, and when the levers 30 hold down the wires, the wires are pressed into the press-contact slits. 11a can be prevented from coming off along with the lever 3
By covering the terminal plate 11 with 0, the terminal plate 11 is protected.

As is clear from the above description, the lever 3
0 is not connected to the connection base 20 and merely inserts the fulcrum projection 33 into the pivot hole 24 of the connection base 20.
The lever 30 can be easily separated from the terminal block 10 and the connection block 20. That is, it is possible to connect the electric wire to the terminal plate 11 without using the lever 30 with the terminal block 10 opened. The outer width of the upper part of the terminal block 10 is a standard terminal block (a so-called 110-type terminal block).
And the positioning of a commercially available impact tool is possible. That is, it is possible to connect the electric wire to the terminal plate 11 by using a commercially available impact tool. This is effective when a wire having a relatively large core wire diameter is used as the electric wire. Even when the lever 30 cannot push the electric wire into the press-contact slit 11a of the terminal plate 11 with a sufficient force, the impact tool is used. Connection work can be performed. In short, by adopting the configuration of the present embodiment, it is possible to select a connection work method as needed.

(Second Embodiment) In this embodiment, as shown in FIG. 5 and FIG.
In the illustrated example, two connection bases 20 are arranged in a row.
Is provided. Here, the connection board 20 is connected to a connection board 13 formed of a printed wiring board, and the contacts 12 provided on the connection board 20 are connected to the terminal plate 11 via the conductive pattern of the connection board 13. As in the first embodiment, the terminal boards 11 form rows arranged in a direction orthogonal to the thickness direction, and are arranged in two rows on the connection board 13. However,
The terminal plates 11 are arranged in the direction in which the contacts 12 are arranged in a plane orthogonal to the insertion direction of the modular plug, instead of the terminal plates 11 being arranged in the insertion direction of the modular plug as in the first embodiment.

The terminal plates 11 are held on the holding base 15 for each row, and the terminal base 11 is connected to the connection board 13 by soldering, press fitting, or the like, so that the holding base 15 is connected to the connection board 13.
Fixed to Further, the holding base 15 is provided on the connection board 13.
The lever holder 17 is fixed so as to correspond to one end of the lever 3, and the lever 3 is inserted into a pivot support hole 17 a provided in the lever holder 17.
The zero fulcrum projection 33 is inserted.

As shown in the figure, when a large number of terminal plates 11 are arranged in a row, the levers 30 are provided for a fixed number (in the illustrated example, eight in a row).
0 does not become extremely large, and the connection work can be performed for every appropriate number of connection bases 20. Here, since the lever 30 of the present embodiment can be separated from the terminal block 10 similarly to the first embodiment, it is also possible to perform the connection work using an impact tool. Other configurations are the same as those of the first embodiment.

In each of the above embodiments, the terminal plate 1
In the press-fitting portion 32 for pushing the electric wire into one press-contact slit 11a, the surface that comes into contact with the electric wire is formed in a straight line.
It is also possible to form only the vicinity of the part that comes into contact with the electric wire in a projecting shape so that the irregularities are repeated.

(Third Embodiment) As shown in FIGS. 7 and 8, the basic configuration of this embodiment is the same as that of the first embodiment. Also in this embodiment, the terminal board 11 is provided on the upper surface of the holding base 15 for each row of the terminal board 11.
Each of the guide walls 16 is provided so as to face each other in the thickness direction. That is, the terminal plates 11 are arranged in a row in a groove-like portion sandwiched between the pair of guide walls 16 so as to be separated from the guide walls 16. As in the first embodiment, the guide wall 16 and the terminal plate 1
The press-fit portion 3 of the lever 30 is formed in the groove formed between
2 will be inserted. In addition, at a portion of the guide wall 16 corresponding to the pressure contact slit 11a of the terminal plate 11,
Holding slit 1 opened toward the upper edge of guide wall 16
6a is formed. In short, the guide wall 16 is separated into a plurality by the holding slit 16a. Here, the upper edge of each part of the guide wall 16 separated by the holding slit 16a is formed in an arc shape that is upwardly convex, and has a protruding piece 16c that protrudes upward at the center of the upper edge. . However, the protrusion 16c is not provided at the front end and the rear end of the guide wall 16, and the protrusion 16c is formed between each pair of adjacent holding slits 16a. However, if an electric wire is introduced between the two protruding pieces 16c at a position where the pair of protruding pieces 16c are adjacent, the electric wire can be easily introduced into the holding slit 16a. Here, the electric wires are each electric wire constituting a twisted pair cable, and two electric wires, which form a pair, are housed in a sheath in a twisted state. It is necessary to untwist the wires. Then, by pressing the twisted portions of the paired electric wires against the protruding pieces 16c, the tips of the twisted electric wires can be separated from each other, and the work of introducing the electric wires into the holding slits 16a becomes easy. is there. Thus, the guide wall 16 in the present embodiment functions as a guide member for guiding the electric wire to the press-contact slit 11a of the terminal plate 11.

In the holding base 15 of the present embodiment, positioning pins 15b are projected from the lower surface at two front and rear positions, and each positioning pin 15b is provided with a positioning hole formed through the connection board 13 and the base 14, respectively. 13a, 14
inserted into d. As described above, since the positioning pins 15b are provided at the two front and rear portions, the connecting legs 15c projecting from the rear end of the holding base 15 in the first embodiment are omitted. Further, in this embodiment, the front end of the base 14 projects forward from the front end of the connection board 13,
On the base 14 projecting forward from the connection board 13, a positioning table 1 with which the front edge of the connection board 13 abuts is located.
4 g are formed. That is, the connection board 13 is connected to the base 14 by the positioning table 14g and the positioning pins 15b.
And the holding base 15.

Further, in the first embodiment, all the contacts 12 that come into contact with the contacts of the modular plug are
The connection board 1 is implanted on the lower surface of the connection board 13 made of a printed wiring board and bypasses the front face of the connection board 13.
3 is inclined rearward on the upper surface side of the connection substrate 13 so that the distance from the upper surface of the connection substrate 13 becomes larger. And a contact 12b to be implanted in the contact. That is, the contact 12a implanted on the lower surface of the connection board 13 is attached to the positioning table 14g of the base 14.
After passing from the lower surface to the front surface, the upper surface of the connection substrate 13 is inclined such that the distance from the upper surface of the connection substrate 13 increases toward the rear end. Further, the contact 12b is planted on the upper surface of the connection substrate 13 near the rear end of the contact 12a, and is curved in an arc shape to ensure elasticity above the contact 12b, and then decreases the distance from the connection substrate 13 toward the front. Incline so that As described above, the contacts 12a and 12b whose directions (directions from the base to the distal end) are opposite to each other are provided at the contact portions of the modular plug with the contacts, and the inclination angles of the contacts 12a and 12b are different and non-parallel. Therefore, the effect of suppressing crosstalk can be expected. The other configurations and operations are the same as those of the first embodiment, and thus the description is omitted.

(Fourth Embodiment) This embodiment is similar to FIG.
As shown in FIG. 7, a portion of the press-fitting portion 32 of the lever 30 which comes into contact with the electric wire X is provided with a retaining groove 32c into which a part of the electric wire X is inserted. That is, one lever 30
In this case, four electric wires X are pressed, so that hook grooves 32 c are formed at four places of the press-fitting portion 32. Here, the retaining groove 32c
Among them, those having a small distance from the fulcrum projection 33 are formed in an arc shape obtained by cutting off a part of a circular arc, while those having a large distance have a greater curvature on the side farther from the side closer to the fulcrum projection 33. It is formed in an arc shape.

By forming the engaging groove 32c in the press-fitting portion 32 of the lever 30 as described above, the electric wire X is positioned so as to correspond to the holding slit 16a of the guide wall 16 in FIG. When the lever 30 is tilted down as in a), the electric wire X is pushed into the press-fitting portion 32 in a state where the electric wire X is introduced into the engaging groove 32 c and the wire X is prevented from slipping with respect to the press-fitting portion 32, and The electric wire X can be pressed into the press contact slit 11a without displacement. Also, by forming the engaging groove 32c in the shape as described above,
It is possible to more reliably prevent the displacement of the electric wire X. As described above, since the displacement of the wire X with respect to the press-fitting portion 32 does not occur at the time of press-fitting the wire X, all the forces applied to the lever 30 can be used for the press-fitting of the wire X, so that the case where the slip occurs occurs It is also possible to press-fit the electric wire X with a small force. Other configurations and functions are the same as those of the other embodiments described above, and thus description thereof will be omitted.

(Fifth Embodiment) In each of the above embodiments, two levers 30 are provided, and one lever 3
0 allows four wires X to be connected to the terminal plate 11. By the way, the longer the distance from the fulcrum projection 33 serving as the fulcrum to the pressing portion with the finger serving as the fulcrum, the smaller the force can be connected to the electric wire. Because of the size, the length of the lever 30 is limited.

Therefore, in this embodiment, as shown in FIGS. 10 and 11, an auxiliary lever 35 is provided so as to overlap with the lever 30. The auxiliary lever 35 has a width across the two levers 30, and when the auxiliary lever 35 is mounted on the lever 30, the distance from the fulcrum projection 33 to the end is the lever 30.
The length dimension is set so as to be larger than. The auxiliary lever 35 has a fitting recess 35 a for accommodating the two levers 30, and is detachably fitted to a step formed between the operation plate 31 and the press-fitting portion 32 of the lever 30. A joint (not shown) is provided. Auxiliary lever 3
5 is used to press the lever 30, so that the auxiliary lever 35 is fitted on the inside of both sides of the fitting recess 35 a of the auxiliary lever 35 so that the auxiliary lever 35 does not come off from the lever 30 when the auxiliary lever 35 is operated. A configuration is adopted in which a groove is formed and the side of the operation plate 31 of the lever 30 is inserted into the fitting groove. With such a configuration, even when a force is applied to the auxiliary lever 35, the auxiliary lever 35 does not come off the lever 30, and the auxiliary lever 35 can be detachably attached to the lever 30.

By using the auxiliary lever 35 as described above, the two levers 30 can be operated collectively, and if the length of the auxiliary lever 35 is set to be large, both levers 30 can be operated. It is also possible to connect electric wires with a smaller force than when using 30 alone. Also,
By using the auxiliary lever 35, the area pressed by the finger can be made larger than that of the lever 30, so that the bite into the finger is reduced and the pressing operation becomes easy. Moreover,
Since the auxiliary lever 35 is detachable from the lever 30, the occupied space does not increase during use by removing the auxiliary lever 35 after the connection work. Since the auxiliary lever 35 is detachable from the lever 30, a plurality of modular jacks may share the auxiliary lever 35. Other configurations and functions are the same as those of the other embodiments.

(Sixth Embodiment) This embodiment is different from FIG.
2. As shown in FIG.
A press-fitted structure (press-fit) is used for 3. That is, the connection piece 11b of the terminal plate 11 is formed in an elliptical shape, and is formed in a shape in which an elliptical slit 11c is provided in the center. The connecting piece 11b having such a shape is shown in FIG.
3A, elasticity is provided in the left-right direction, and when a pressing force is applied from the left and right in a direction to reduce the width of the connection piece 11b, a return force is applied. Through holes 13b slightly smaller than the width
Is formed on the connection board 13 and the connection pieces 11b are press-fitted into the through holes 13b, so that the terminal plate 11 can be made to stand on the connection board 13 independently. Here, when press-fitting the connection piece 11b of the terminal board 11 into the connection board 13,
Requires a relatively large force to be applied. Therefore, as shown in FIG. 13 (b), to the extent that a relatively small step 11 d is formed at the base of the terminal plate 11, the force for press-fitting the connection piece 11 b into the connection board 13 using the step 11 d is used. However, it is difficult to apply a sufficiently large force. Moreover, this step 1
Since 1d is formed in an arc shape so that stress is not concentrated, it is difficult to apply a force. To apply a sufficiently large force to the terminal plate 11, it is conceivable to widen the surface (side) to receive the force. However, since the terminal plates 11 are arranged in the left-right direction, the width of the terminal plate 11 is reduced. If this is the case, it is not preferable because the entire size becomes large.

Therefore, in the terminal plate 11 according to the present embodiment, as shown in FIG. 13 (a), the notches 11e are formed at both sides in the width direction at the base of the terminal plate 11, so that the force for press-fitting is reduced. The receiving surface (side) is expanded. That is, a constricted portion is formed at the base of the terminal plate 11.
By adopting such a shape, the connection piece 11b
Can be applied in a wider range than the shape shown in FIG. 13B when press-fitting into the through-hole 13b, and a relatively large force can be applied to the terminal plate 11. Will be possible. That is, a force can be applied to the entire surface of the base portion of the terminal plate 11 that protrudes from the upper portion (there is no arc-shaped portion in the protruding portion, and the entire upper surface of the protruding portion is orthogonal to the direction in which the force is applied during the press-fitting). Of course, it is possible to utilize even the inside of the cut groove 11e to receive the force at the time of press-fitting. Note that an arc-shaped portion formed to avoid stress concentration due to a protruding portion in the width direction at the base of the terminal plate 11 is formed inside the cut groove 11e.

By using the terminal plate 11 having the above-described shape, the function of press-fitting the connection substrate 13 is facilitated, and as a result, the work of assembling the terminal plate 11 to the connection substrate 13 is facilitated, and the workability is improved. I do. Other configurations and functions are the same as those of the other embodiments.

[0048]

According to the first aspect of the present invention, there is provided a housing in which a plug insertion opening for inserting a modular plug is opened, a plurality of contacts arranged in the plug insertion opening and capable of contacting the contacts of the modular plug. A plurality of terminal plates, each of which is electrically connected to a contact and to which a wire as an insulation-covered wire is connected, is provided with a plurality of terminal plates provided on a terminal block provided in a housing, and at least one of the terminal plates is provided. And a lever having a press-fit portion for pushing the electric wire into the press-contact slit on both sides of the terminal plate in the thickness direction of the terminal plate, the support plate protruding from one end of the lever. A pivot hole is formed in the housing to allow the fulcrum projection to be inserted and removed freely and to abut a part of the fulcrum projection to support the lever when the electric wire is pushed into the press-fitting slit by the press-fitting part. If the lever is turned down with the fulcrum projection provided on the lever inserted into the pivot hole of the housing, the wire can be pushed into the press-fitting slit of the terminal board by the press-fitting part, and another tool is used. The connection work can be performed without any trouble.On the other hand, since the fulcrum projection of the lever can be inserted into and removed from the pivot hole of the housing, the lever can be easily separated from the housing and the lever can be separated from the housing. In this case, connection work using a tool such as an impact tool can be performed with the terminal board exposed. As a result, it is possible to select a connection method according to the type of the electric wire and the like, and there is an advantage that it is possible to provide an easy-to-use modular jack.

According to a second aspect of the present invention, in the first aspect of the present invention, the terminal plates are arranged on a straight line in a plane including the moving direction of the lever, and are arranged so that the thickness direction is orthogonal to the straight line. The wires can be sequentially pushed into each terminal board arranged in line as the lever is tilted, and the force acting on the lever can be reduced as compared to the case where wires are pushed into many terminal boards simultaneously. Therefore, there is an advantage that the connection operation using the lever can be performed with a relatively small force.

According to a third aspect of the present invention, in the first or second aspect of the present invention, an engaging portion for engaging with the terminal block is formed at a portion of the lever different from the one end where the fulcrum projection is provided. Since the lever is engaged with the terminal block while the lever is placed on the terminal block, the terminal plate can be protected by covering the terminal plate with the lever, and the wire can be pressed by the lever because the wire is pressed by the lever. There is an advantage that the electric wire can be prevented from coming off along.

According to a fourth aspect of the present invention, in the second aspect of the present invention, at least one side of the terminal plates arranged in a straight line in the thickness direction has a guide wall projecting from the terminal block larger than the terminal plate. The holding slit is formed on the guide wall to guide the electric wire to the press-contact slit provided on the terminal plate, and the introduction of the electric wire to the holding slit facilitates the introduction of the electric wire to the press-contact slit. As a result, the work of connecting the electric wires is facilitated. In particular, since the holding slit can be formed to be wider than the pressing slit, there is an advantage that the electric wire can be reliably guided to the pressing slit while facilitating introduction of the electric wire into the holding slit.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, a projecting piece is provided between the adjacent holding slits in the guide wall, and the guide wire is twisted when the wire is a twisted pair wire. By inserting the mating portion into the protruding piece, the tip of the twisted pair wire can be separated and introduced into the press-contact slit, and there is an advantage that the connection work becomes easy.

According to a sixth aspect of the present invention, in the first to fifth aspects of the present invention, a part of each electric wire is inserted into a portion corresponding to each press-contact slit in the press-fitting portion of the lever, and each of the electric wires is inserted into the lever. A latching groove is formed to prevent displacement of the lever. When the lever is lowered, the latching groove prevents displacement of the wire with respect to the lever. In addition, since the wire does not slip on the lever and the force acting on the lever can be efficiently used for press-fitting the wire, the wire can be pressed in with less force than without the locking groove. May be possible.

According to a seventh aspect of the present invention, in the first to sixth aspects of the present invention, a distance from the fulcrum projection to a portion farthest from the fulcrum projection in a state of being detachably fitted to the lever and being fitted to the lever. Is provided with an auxiliary lever that is larger than the lever.Using the auxiliary lever makes it possible to increase the distance from the point of force to the fulcrum projection when using the lever alone. There is an advantage that connection with a small force is possible, and since the auxiliary lever is detachable from the lever, removing the auxiliary lever during use other than during connection does not increase the occupied space. . Furthermore, since the auxiliary lever is detachable from the lever,
The auxiliary lever can be shared by a plurality of modular jacks.

According to an eighth aspect of the present invention, in the first to seventh aspects, the terminal block includes a connection board having a through hole, and one end of the terminal plate is press-fitted into the through hole. The connection piece is provided in a protruding manner, and a cut groove having a surface orthogonal to the projecting direction of the connection piece is formed in a portion near the connection piece on a side edge of the terminal plate, and When the connection piece is pressed into the through-hole of the connection board, a force is applied at a portion corresponding to the cut groove, so that the force can be applied over a relatively large area, and the work of press-fitting the terminal plate becomes easy. There is an advantage.

[Brief description of the drawings]

FIGS. 1A and 1B show a first embodiment of the present invention, wherein FIG. 1A is a longitudinal sectional view, FIG. 1B is a partially cutaway plan view, and FIG. 1C is a partially cutaway rear view.

2 (a) is a plan view, FIG. 2 (b) is a side view, and FIG. 2 (c) is a front view.

FIG. 3 is an operation explanatory diagram of the above.

FIG. 4 is an operation explanatory view of the above.

FIG. 5 is a schematic side view showing a second embodiment of the present invention.

FIG. 6 is a schematic sectional view of the above.

FIG. 7 is a longitudinal sectional view showing a third embodiment of the present invention.

FIG. 8 is a plan view of the same device with one lever removed.

9A and 9B show a lever used in a fourth embodiment of the present invention, wherein FIG. 9A is a side view in the middle of connection, and FIG. 9B is a side view after the connection.

FIG. 10 is a longitudinal sectional view showing a fifth embodiment of the present invention.

FIG. 11 is a plan view of the same.

FIG. 12 is a longitudinal sectional view showing a sixth embodiment of the present invention.

FIG. 13 (a) is a front view showing a terminal plate used in the embodiment,
(B) is a front view showing a terminal board of a comparative example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Terminal block 11 Terminal board 11a Pressure contact slit 11b Connection piece 11e Cut groove 12 Contact 13 Connection board 13b Through hole 16 Guide wall 16a Holding slit 16b Claw 16c Projection piece 20 Connection stand 21 Plug insertion port 24 Pivot hole 30 Lever 31 Operation Plate 32 Press-fit portion 32c Hook groove 33 Support point projection 34a Claw 35 Auxiliary lever X Electric wire

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Gosho Koizumi 1048, Kazumasa Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. F term (reference) 5E012 AA03 AA09 AA43

Claims (8)

[Claims] 1. A housing having a plug insertion opening for inserting a modular plug, a plurality of contacts arranged in the plug insertion opening and capable of contacting the contacts of the modular plug, and electrically connected to the respective contacts. A plurality of terminal plates provided on a terminal block provided with a pressure contact slit to which an electric wire which is an insulated wire is connected, and at least a portion of the terminal block provided with the terminal plate is covered. A lever having a press-fitting portion for pushing an electric wire into the press-contact slit on both sides of the terminal plate in the thickness direction of the terminal plate, and a fulcrum projection protrudingly provided at one end of the lever. A pivot hole is formed in the housing in which the protrusion is inserted so as to be freely inserted and withdrawn, and which contacts a part of the fulcrum protrusion to support the lever when the electric wire is pushed into the press-contact slit by the press-fitting portion. A modular jack comprising: 2. The terminal plate according to claim 1, wherein the terminal plates are arranged on a straight line in a plane including a moving direction of the lever, and are arranged so that a thickness direction is orthogonal to the straight line. Modular jack described. 3. The lever according to claim 1, wherein an engaging portion for engaging with the terminal block is formed at a portion different from the one end portion at which the fulcrum projection is projected. Item 2. The modular jack according to item 2. 4. A guide wall having a protrusion dimension larger than that of the terminal plate is formed on at least one side in the thickness direction of the terminal plates arranged in a straight line, and the guide wall is provided on the terminal plate. 3. The modular jack according to claim 2, wherein a holding slit for guiding the electric wire is formed in the pressing slit. 5. The modular jack according to claim 4, wherein a projecting piece protrudes between adjacent holding slits in the guide wall. 6. A part of each wire is inserted into a portion corresponding to each press-contact slit in the press-fitting portion of the lever, and a locking groove is formed to prevent displacement of each wire with respect to the lever. The modular jack according to any one of claims 1 to 5, wherein: 7. An auxiliary lever, which is detachably fitted to the lever and has an auxiliary lever whose distance from the fulcrum projection to a portion farthest from the fulcrum projection is larger than that of the lever when fitted to the lever. The modular jack according to any one of claims 1 to 6. 8. The terminal board includes a connection board having a through hole, and a connection piece press-fit into the through hole is protruded at one end of the terminal plate. The modular jack according to any one of claims 1 to 7, wherein a cut groove having a surface orthogonal to a projecting direction of the connection piece is formed in a vicinity of the connection piece.