JPH02299184A - Multipole modular jack - Google Patents

Abstract

PURPOSE:To improve assembly efficiency by a method wherein a lead wire drawn out of a modular insert is press-fitted into a first pressure-welded slit and a pressure-welded protruding piece protruding from a terminal block is press-fitted into a second pressure-welded slit of a connection board. CONSTITUTION:When a connection board 60 is press-fitted into a holding hole 56 with a lead wire 33 of a modular insert 30 introduced into a holding groove 58, the lead wire 33 is introduced into a pressure-welded slit 62. At the same time the upper end of the connection board 60 is brought into contact with the inner peripheral face of the holding hole 56 to narrow the width of the pressure-welded slit 62 so that the connection board 60 is fixed on an inner base 50 as well as the lead wire 33 is electrically connected to the connection board 60. Therefore necessity of connection by soldering for electrically connecting the modular insert with the terminal block can be eliminated to simplify wiring at the time of assembly.

Description

[Detailed description of the invention] [Industrial application field]

The present invention provides a case into which a modular plug is detachably inserted, a modular block which is housed in the case and has a large number of contact springs that come into contact with the contacts of the modular plug, and a modular block that is housed in the case and has contact springs that come into contact with the contacts of the modular plug. This is a multi-polar modular jack equipped with a large number of terminal blocks for electrically connecting external lines.

[Conventional technology]

Conventionally, multi-pole modular jacks with eight or more contact springs have been provided, and in this type of multi-pole modular jack, a modular insert with a large number of contact springs corresponding to the contacts of a modular plug has been provided. Lead wires electrically connected to each contact spring are drawn out, and the lead wires are coupled by solder to a terminal that connects each lead wire to an external electric wire.

[Problem to be solved by the invention]

In the above-mentioned conventional structure, since the terminal and the lead wire are connected by soldering, there is a problem that the soldering work is time-consuming and the assembly workability is poor. The present invention is aimed at solving the above-mentioned problems, and it is possible to electrically connect the contact spring and the terminal without soldering the lead wire of the modular insert to the terminal, thereby improving the work efficiency of assembly. The purpose of this project is to provide a multi-polar modular jack.

[Means to solve the problem]

In order to achieve the above object, in the present invention, a modular insert having a large number of contact springs and from which lead wires electrically connected to each contact spring are pulled out, and each of the lead wires are press-fitted into a modular block. A connection plate having a first pressure welding slit is provided, and a second pressure welding slit is formed in the connection plate, and a second pressure welding protrusion protruding from the terminal block is provided.
It is press-fitted into the pressure welding slit. In addition, the pressure welding protrusion is inserted into the notch groove formed within the case in a plane perpendicular to the protruding direction of the pressure welding protrusion, and the connection plate is introduced along the notch groove, and the connection plate is placed around the circumference of the notch groove. It is desirable to form an inclined surface that slopes closer to the base side in the direction of protrusion of the press-contacting protrusion as it is introduced. Furthermore, the modular block has a guide hole into which the modular plug is inserted by matching with the plug insertion opening of the case, and a middle frame that holds the modular insert so that the contact spring faces inside the guide hole is connected to the middle frame. It is preferable that the connection plate be provided with a middle base having a shape and that the connection plate is held by the middle base. Alternatively, holding protrusions may be provided protrudingly on opposite side surfaces of the middle frame, and engagement hooks may be provided on the middle base to engage with the holding protrusions and hold the middle frame. The case is equipped with a mounting part that can be attached to a mounting frame that is standardized for wiring devices and can mount up to three unit-sized wiring devices, and it is also possible to attach up to three devices to the above-mentioned mounting frame. 1 of the unit dimension wiring equipment
The terminal block is inserted through a terminal frame placed at a fixed position in the case and a wire insertion hole located opposite the terminal frame and drilled on one side of the case. It is desirable to form a locking spring that holds the tip of the wire between the terminal frame and the terminal frame. Alternatively, the case may be configured such that up to two unit-sized wiring devices can be attached to a mounting frame that is standardized for wiring devices and can accommodate up to three unit-sized wiring devices. The size may be set to correspond to five pieces.

[Effect]

According to the above configuration, the lead wire pulled out from the modular insert is press-fitted into the first pressure-welding slit of the connection plate, and the pressure-welding protrusion protruding from the terminal block is press-fitted into the second pressure-welding slit of the connection plate. , there is no need to use solder to electrically connect the modular insert and the terminal block, and the only work required is to press the lead wires and pressure-welding protrusions into the respective pressure-welding slits on the connection plate, making assembly easier. This makes wiring work easier. In addition, the pressure welding protrusion is inserted into the notch groove formed within the case in a plane perpendicular to the protruding direction of the pressure welding protrusion, and the connection plate is introduced along the notch groove, and the connection plate is placed around the circumference of the notch groove. By forming an inclined surface that slopes closer to the base side in the direction of protrusion of the pressure-welding protrusion as the pressure-welding protrusion is introduced, the connection plate will be more stable when introducing the pressure-welding protrusion into the second pressure-welding slit of the connection plate As it slides down the slope, the press-contact protrusion is gradually introduced deeper into the second press-contact slit, making it easier to connect the connecting plate and the terminal block. If you connect the lead wire pulled out from the modular insert to the connection plate held on the middle base, simply press the middle base against the terminal block, and the pressure welding protrusion protruding from the terminal block will fit into the pressure welding slit provided on the connection plate. can be press-fitted, making assembly work even easier. In addition, the case must have a mounting part that can be attached to a mounting frame that can attach up to three unit-sized wiring devices, and the case must be attached to a maximum of three or two wiring devices. If the unit size is set to the size of 1 or 1.5 wiring devices, the same mounting components as the wiring devices can be used, allowing common use of components, and the construction method can also be changed. It can be used in the same way as wiring equipment, improving workability. Moreover, it can be attached to the same mounting frame together with wiring equipment, allowing for diversification of usage patterns. Furthermore, if the terminal block for connecting external electric wires is configured with a terminal frame and a locking spring that holds the electric wires between the terminal frames, it can have a so-called quick-connect terminal structure. Wires can be connected using the casing, and a case as small as a wiring device can be used. Furthermore, since the terminal has a quick-connection terminal structure, the wire connection can be performed simply by inserting the wire into the wire insertion hole provided in the case, making the wire connection work easier. As described above, the installation on the mounting surface is easy, and the wiring work is also easy, which makes the installation work easier as a whole, and the workability is greatly improved.

【Example】

As shown in FIGS. 1 and 2, it is basically constructed by placing a modular block 2, a terminal block 3, and a door block 4 in a case 1. The case 1 is made of synthetic resin and has dimensions that allow up to three large square pieces to be attached to a mounting frame for three large square pieces standardized by JIS standards and Japan Wiring Appliance Industry Association standards. In other words, it has the same mounting dimensions as a standardized wiring device so that it can be mounted on a standardized mounting frame. This case 1 is a body 10 with a negative side.
and a cover 20 that is fitted over the opening surface of the body 10. That is, the cover 2 is inserted into the assembly hole 12 provided in the seven flange 11 protruding from both side edges of the body 1o.
The assembly legs 21 protruding toward the body 10 from both sides of the assembly leg 21 are inserted, and the hook 22 provided at the tip of the assembly leg 21 is inserted.
body 10 by locking it to the periphery of the assembly hole 12.
and the cover 20 are combined. The inside of the body 10 is partitioned at the lower half in FIG. 1 by a partition wall 13, and a total of eight terminal storage chambers 14 are formed in two rows of four sections each. The cover 20 has a protrusion 23 at the center of the outer surface in the coupling direction with the body 10, and coupling holes 24 are formed on both sides of the protrusion 23. A pair of coupling claw pieces 25 are provided in a protruding manner. The coupling hole 24 and the coupling claw piece 25 are coupled to the above-mentioned mounting frame, and the coupling hole 24 corresponds to a metal mounting frame, and the coupling claw piece 25 corresponds to a synthetic resin mounting frame. dimensions are set. A plug insertion opening 26 into which a modular plug is inserted is opened in the center of the protrusion 23. The modular plug inserted through the plug insertion port 26 is coupled to the modular block 2. The modular block 2 includes a modular insert 30, a middle frame 40, a middle base 50, and a connection plate 60. That is, the modular insert 30 is made by molding eight conductor wires made of a spring material simultaneously and integrally with a holding frame 31 made of synthetic resin, and both ends of the conductor wires protrude from the holding frame 31. One end of each conductor wire is folded back at a protruding portion from the holding frame 31 to form a contact spring 32 that individually contacts a plurality of contacts provided on the modular plug. The contact spring 32 is inclined so that the distance between the tip and the surface adjacent to the surface protruding from the holding frame 31 is large. Further, the other end of the conductor wire functions as a lead wire 33 electrically connected to each contact spring 32, respectively. A locking protrusion 34 is provided protruding from the surface of the holding frame 31 opposite to the surface on which the contact spring 32 is provided. The modular insert 30 is loaded into the middle frame 40. The middle frame 40 is made of synthetic resin, has an open lower surface in FIG. 1, and has a guide hole 41 formed in a part of the upper surface in FIG. The holding frame 31 of the modular insert 30 is attached to a portion of the middle frame 40 where the guide hole 41 is not formed,
Contact spring 32 is arranged within guide hole 41 . A comb tooth portion 42 is formed inside the guide hole 41 to separate the tips of the contact springs 32 so that the contact springs 32 do not come into contact with each other. Furthermore, a locking hole 43 into which a locking protrusion 34 protruding from the holding frame 31 is fitted is formed in the peripheral wall of the middle frame 40 . Therefore, the module insert 3 is placed inside the middle frame 40.
0, the distal end surface of the modular insert 30 comes into contact with the inner circumferential surface of the inner frame 40, and the locking protrusion 34 fits into the locking hole 43, causing the module insert 30 to move in the vertical direction in FIG. The movement of people will be regulated. In addition, by the contact spring 32 coming into elastic contact with the comb tooth portion 42, the holding frame 3
1 comes into contact with the inner circumferential surface of the middle frame 40, and the locking protrusion 34 is prevented from being removed from the locking hole 43. That is, when attaching the modular insert 30 to the middle frame 40,
After inserting the holding frame 31 into the middle frame 40 with the tip of the contact spring 32 bent so as to bring it closer to the holding frame 31, and fitting the contact spring 32 into the comb teeth part 42, the contact spring 32 is bent. When the holding force is removed, the locking protrusion 34 fits into the locking hole 43. A total of four positioning protrusions 44 are provided on the outer peripheral surface of the side wall of the middle frame 40, one pair on each side wall, and a holding protrusion 4 is provided between each pair of positioning protrusions 44 provided on each side wall.
5 is provided protrudingly. A pair of engagement hooks 51 that are engaged with the holding protrusions 45 of the middle frame 40 are provided in a protruding manner on the middle base 50 . Further, four positioning dowels 52 are provided in a protruding manner to abut on the outer peripheral surface of the middle frame 40 and position the middle frame 40 with respect to the middle base 50. Therefore, with the modular insert 30 attached to the middle frame 40, the middle frame 40 is coupled to the middle base 50 by engaging the engagement hook 51 with the holding protrusion 45. At this time, as shown in FIG. As shown, the positioning dowels 52 come into contact with the outer circumferential surface of the middle frame 40, thereby preventing the middle frame 40 from shifting. A through hole 53 that penetrates from the front and back is bored in the center of the part of the middle base 50 that is covered by the middle frame 40, and a lead is formed in the periphery of the hole 53 between it and the holding frame 31 of the modular insert 30. A recess 54 is formed that forms a gap through which the wire 33 passes. Also, recess 5
4 to the through hole 53 is the inside of the through hole 53.
An inclined surface 55 is formed which is inclined so as to narrow the width of 3. Therefore, the lead wire 33 pulled out from the modular insert 30 held by the middle frame 40 is connected to the holding frame 31.
It is introduced into the through hole 53 along the inclined surface 55 through the space between the hole 54 and the recess 54, and is drawn out through the through hole 53 to the back surface of the middle base 50. A total of eight holding holes 56 are formed in the middle base 50 in two rows of four holes in each row in the direction in which the contact springs 32 of the modular insert 30 are lined up, and as shown in FIG. A stepped portion 57 is formed inside the hole 56 so that the upper portion is narrower than the lower portion. The holding hole 56 penetrates both sides of the middle base 50. A retaining groove 58 running in a direction perpendicular to the arrangement direction of the retaining holes 56 is provided on the lower surface of the middle base 50.
is formed. The retaining groove 58 passes through the center of the retaining hole 56 in the arrangement direction of the retaining hole 56, and
It is formed to have a width approximately equal to the diameter of the lead wire 33 of 0.0. Further, the upper end of the holding hole 56 is formed to be located slightly above the step portion 57. A presser protrusion 5 is provided on the lower surface of the middle base 50 at a location different from the retaining hole 56 and corresponding to the retaining groove 58.
9 is provided protrudingly. A positioning groove 18 running in the vertical direction in FIG. Positioning with respect to the body 10 is performed. A connecting plate 60 is attached to the holding hole 56 of the middle base 40 . The connecting plate 60 has retaining pieces 61 on both sides of the central recess in the vertical direction in FIG.
2.63 is formed of a conductive sheet metal,
As shown in FIG. 2(a), the upper end portion is press-fitted into the holding hole 56. Here, the retaining piece 61 comes into contact with the stepped portion 57, thereby regulating the position of the connecting plate 60 with respect to the intermediate base 50. With the structure described above, when the connecting plate 60 is press-fitted into the holding hole 56 with the lead wire 33 of the modular insert 30 introduced into the holding groove 58, the lead wire 33 is introduced into the pressure welding slit 62 and , the upper end of the connecting plate 60 presses against the inner circumferential surface of the holding hole 56 to form the press slit 62.
The width of the connecting plate 60 is narrowed, the connecting plate 60 is fixed to the middle base 50, and the lead wire 33 is electrically connected to the connecting plate 60. Eight terminal blocks 3 are provided so as to be stored in each terminal storage chamber 14 of the body 10, and each terminal block 3 has a substantially U-shaped terminal frame 71 opening downward, and
It is configured by a locking spring 72 mounted inside a terminal frame 71. One leg of the terminal frame 71 is divided by a slit 73 running in the direction in which the leg protrudes, forming a pair of connection pieces 74. Furthermore, a press-contact protrusion 75 is provided to protrude from the center piece of the terminal frame 71 at a portion corresponding to the slit 73 . On the other hand, the locking spring 72 has a pair of spring pieces 76a and 76b facing each connection piece 74, and the connection piece 74 and the spring piece 76
A and 76b are designed to hold the electric wire between them. As shown in FIG. 2(b), the bottom wall of the body 10 is provided with wire insertion holes 15 corresponding to each terminal storage chamber 14, and a pair of cutouts are provided around the periphery of each wire insertion hole 15. The groove 16 forms a release piece 17 that is flexible with respect to the body 10. The distal end of the release piece 17 comes into contact with the lower surface of the spring piece 76b, and a part is inserted between the pair of spring pieces 76b provided on the locking spring 72. Therefore, the release piece 17 is
When pressed from the bottom side of the connecting piece 74, a pressing force is applied to the spring piece 76b, and the tip of the spring piece 76b can be bent away from the connecting piece 74. That is, the terminal block 3 and the body 10 constitute a connecting terminal, and when an electric wire is inserted through the electric wire insertion hole 15, the electric wire is sandwiched between the connecting piece 74 and the spring pieces 76a, 76b. The tip edge of the spring piece 76b bites into the wire to prevent the wire from being pulled out. When removing the wire, apply a pressing force to the release piece 17 to release the spring piece 7.
By releasing the pressing force acting on the wire from 6b, the wire can be easily pulled out. By the way, each terminal storage chamber 1 is provided in the partition wall 13 of the body 10.
4, a notch groove 77 as shown in FIG. 4 is formed. At the periphery of the notch groove 77, a holding recess 78 is formed in which the inner surface of the terminal storage chamber 14 is recessed in the thickness direction of the partition wall 13.
is formed. The holding recess 78 has an upper part wider than a lower part and has a stepped part 79 at the upper and lower middle interlocking parts, and the retaining piece 61 of the connecting plate 6O comes into contact with the stepped part 79. Further, the lower part of the connection plate 60 is press-fitted below the step portion 79. The lower end of the notched groove 77 is located below the step portion 79, and the peripheral wall of the holding recess 78 forms an inclined surface 78a above the lower end of the notched groove 77. That is, the inclined surface 78a is inclined so as to increase the thickness of the lower partition wall 13. The pressure contact piece 75 of the terminal block 70 is inserted into the notch groove 77, and by inserting the connection plate 60 into the holding recess 78 from the direction perpendicular to the pressure contact piece 75, the connection plate 60 is pressed into the pressure contact slit 63. This allows the protruding piece 75 to be press-fitted. Therefore, if the connecting plate 60 is introduced into the holding recess 78 from above,
The connection plate 60 slides along the inclined surface 78a so as to approach the terminal block 4, and the pressure contact protrusion 75 is gradually introduced deeper into the pressure contact slit 63. The door block 4 is formed by combining a pair of door bodies 81 and 82. As shown in FIG. 2(a), each door body 81, 82 is arranged between a pair of left and right guide protrusions 83 protruding from the circumference of the plug insertion opening 26 on the inner surface of the cover 20. 0
A locking pawl 84 is provided protruding from the opposing surfaces of both guide protrusions 83, and the door bodies 81, 82 can be temporarily held by this locking pawl 84. One door body 81 has a cover 2
An operating piece 85 is provided that protrudes from 0, and when the door block 4 closes the plug insertion opening 26, this operating piece 85
When the door body 81 is slid along the opening surface of the plug insertion port 26 while holding the
When the two door bodies 81 and 82 come into contact with each other, the plug insertion slot 26 can be opened by moving both the door bodies 81 and 82.Protrusions 86 and 87 are protruded on the front surface of the door body 81 and the back surface of the door body 82, respectively. When the plug opening 26 is opened and the operating piece 85 is held and the door body 81 is slid, the protrusions 86 and 87 are engaged and both the door bodies 81 and 82 are slid at the same time. As shown in Fig. 2(b), the door body 82
A retaining protrusion 88 is provided on the back surface of the cover 20 , and a retaining rib 89 is provided on the inner surface of the cover 20 to protrude around the plug insertion opening 26 .
By abutting the retaining protrusion 88 on one end, the door body 8
The amount of movement of 2 is regulated. The presser rib 89 is shown in FIG.
), by sandwiching the door body 81 between the inner frame 40, the door body 81 is prevented from rattling. The modular jack having the above configuration is assembled as follows. First, connect the terminal block 3 to the body 10.
It is stored in the terminal storage chamber 14 of. At this time, by inserting the pressure welding protrusion 75 into the notch groove 77, each terminal block 3
The primary position is determined relative to the body 10, and the third
As shown in the figure, a modular block 2, which is an assembly in which a modular insert 30, a middle frame 40, a middle base 50, and a connecting plate 60 are combined, is installed in a body 10. At this time, since the connecting plate 60 is introduced into the holding recess 78 along the inclined surface 78a provided on the partition wall 13, the connecting plate 60 can be easily connected to the pressure contacting protrusion 75 as described above. be. At this time, the positioning groove 18 of the middle base 50 engages with the positioning protrusion 19 of the body 10, so that the middle base 50 is positioned with respect to the body 10. Further, since the presser projection 59 protruding from the lower surface of the intermediate base 50 comes into contact with the terminal frame 71 of the terminal block 3 and presses it downward, the position of the terminal block 3 is also fixed. lastly,
With the door block 4 temporarily held on the cover 20, remove the cover 2.
0 to the body 10, the upper end of the positioning protrusion 44 of the middle frame 40 is pressed by the lower end of the guide protrusion 83, thereby preventing the middle frame 40 from wobbling, and furthermore, the cover 2
The door block 4 is held between the inner circumferential surface of the door and the middle frame 40, and the door block 4 can slide without rattling. The modular jack formed as described above has a fifth
As shown in the figure, it is coupled to a mounting frame 90 that is standardized for three large rectangular pieces, which is the standard for switches and electrical outlets in the JIS standards and the Japan Wiring Appliance Industry Association standards. That is, as described above, since the case 1 is formed to have the same mounting dimensions as the unit dimensions of general wiring devices, the mounting frame 90
Up to 3 can be attached to the . The mounting frame 90 has holding holes 93a and 93b on both side pieces 92a and 92b surrounding the opening window 91, in which the coupling claw pieces 25 protruding from the side edges of the case 1 are engaged, respectively, and one side piece 92a An operating piece 94 that can be bent so as to change the distance from the side piece 92a is formed. When attaching the case 1 to the mounting frame 90, as shown in FIG.
4 is bent so that the case 1 can be fitted into the mounting frame 90, and at this time, the protrusion 23 protrudes from the opening window 91. On the other hand, the mounting frame 9
To remove the case 1 from the 0, just pry the operation piece 94 with a screwdriver or the like.
The connecting pieces 95a and 95b perpendicular to the switch box have a long hole 96 into which a box screw for connecting the mounting frame 90 to the switch box is inserted, and a screw hole into which a plate screw for attaching a decorative plate covering the front surface of the mounting frame 90 is screwed. 97 etc. are provided. The illustrated mounting frame is a synthetic resin mounting frame 90, but in the case of a metal mounting frame, it can be connected to the mounting frame using the coupling hole 24.Also, although the case 1 is taken as a unit dimension, As shown in FIG. 6, the terminal blocks 3 may be arranged in a direction perpendicular to the arrangement direction of the contact springs 32 by setting the dimensions to be 1.5 times the unit dimension.

【Effect of the invention】

As described above, the present invention includes a modular insert having a plurality of contact springs and lead wires electrically connected to each contact spring drawn out from the modular block, and a first insert into which each of the lead wires is press-fitted. A connection plate having a pressure welding slit is provided, a second pressure welding slit is formed in the connection plate, and a pressure welding protrusion protruding from the terminal block is press-fitted into the second pressure welding slit, The lead wire pulled out from the Modular insert is press-fitted into the first pressure-welding slit of the connection plate, and the pressure-welding protrusion protruding from the terminal block is press-fitted into the second pressure-welding slit of the connection plate. There is no need to use solder to make electrical connections with the connector, and the only work required is to press the lead wires and pressure welding protrusions into the respective pressure welding slits on the connection plate, which simplifies the wiring work during assembly. In addition, the pressure welding protrusion is inserted into the notch groove formed in the case in a plane perpendicular to the protrusion direction of the pressure welding protrusion, and the connecting plate is introduced along the notch groove. If an inclined surface is formed on the circumference so that it approaches the base side in the protruding direction of the pressure-welding protrusion as the connection plate is introduced, it will be easier to introduce the pressure-welding protrusion into the second pressure-welding slit of the connection plate. In addition, as the connection plate slides on the inclined surface, the pressure contact protrusion is gradually introduced deeper into the second pressure contact slit, and the connection between the connection plate and the terminal block becomes easier. Furthermore, if you connect the lead wire pulled out from the modular insert to the connection plate held on the middle base, you can simply press the middle base against the terminal block and the pressure welding slit provided on the connection plate will fit into the pressure weld The projecting piece can be press-fitted, making assembly work even easier.In addition, the mounting part that can be attached to the mounting frame, which can attach up to three unit-sized wiring devices, is attached to the case. If the unit size is set to 1 or 1.5 wiring devices, and the case is set to the size of 1 or 1.5 wiring devices, so that up to 3 or 2 cases can be attached to the mounting frame, It has the advantage that the same mounting parts can be used as the same mounting frame, allowing for common use of parts, and the installation method can be the same as that for wiring equipment, improving workability. It can also be attached with equipment, resulting in the ability to diversify usage patterns.Furthermore, the terminal block for connecting external electric wires is composed of a terminal frame and a locking spring that holds the electric wire between the terminal frames. Therefore, by having a so-called connecting terminal structure, wiring can be made in a relatively narrow space, and a case as small as a wiring device can be used. Moreover, since it has a connecting terminal structure, the wire connection operation can be performed simply by inserting the wire into the wire insertion hole provided in the case, making the wire connection operation easier. As described above, the construction on the mounting surface is easy and the wiring work is easy, so that the construction work as a whole becomes easy and the workability is greatly improved.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view showing one embodiment of the present invention, Figure 2 (
a) is a partially cutaway side view of the same as the above, Fig. 2 (b) is a longitudinal sectional view of the same as the above, Fig. 2 (6) is a front view of the same as the above, and Fig. 2 (d) is the state of the same as the above with the cover removed. 3 is an exploded perspective view of the main parts of the above, Fig. 4 is an exploded perspective view of the main parts of the same, Fig. 5 is a perspective view showing the relationship with the mounting frame of the above, and Fig. 6 is an exploded perspective view of the main parts of the same. It is a perspective view showing an example. 1...Case, 2...Mojisla block, 4...
Terminal block, 15...Wire insertion hole, 24...Joining hole, 25...Joining claw piece, 26...Plug insertion port, 3
0... Modular insert, 32... Contact spring, 3
3... Lead wire, 40... Middle frame, 41... Guide hole, 45... Holding protrusion, 50... Middle base, 51...
- Engagement hook, 60... Connection plate, 62.63... Pressure welding slit, 71... Terminal frame, 72... Locking spring,
75... Pressure contact protrusion piece, 77... Notch groove, 78a...
Inclined surface, 90...Mounting frame. Agent Patent Attorney Ishi 1) Chief 7 Figure 2 (d) Figure 4

Claims (6)

[Claims] (1) A case with an open plug insertion port into which a modular plug is removably inserted, a modular block that is housed inside the case and has a large number of contact springs that come into contact with the contacts of the modular plug, and In a multi-pole modular jack, the modular block has a large number of contact springs and a large number of terminal blocks that electrically connect external lines to each contact spring. The terminal block includes a modular insert from which the lead wires are pulled out, and a connection plate having a first pressure welding slit into which each of the lead wires is press-fitted, and a second pressure welding slit formed in the connection plate. 1. A multi-polar modular jack, characterized in that a press-fit protrusion protruding from the top is press-fitted into a second press-fit slit. (2) The pressure-welding protrusion is inserted into a notch groove formed within the case in a plane perpendicular to the direction in which the pressure-welding protrusion protrudes, and the connecting plate is introduced along the notch groove, and the periphery of the notch groove is inserted. 2. The multi-pole modular jack according to claim 1, wherein the connecting plate is formed with an inclined surface that is inclined toward the base side in the direction in which the pressure contacting protrusion protrudes as the connection plate is introduced. (3) The modular block has a guide hole into which the modular plug is inserted, matching the plug insertion opening of the case, and a middle frame that holds the modular insert so that the contact spring faces inside the guide hole, and a middle frame. 2. The multi-pole modular jack according to claim 1, further comprising: a middle base coupled to the middle base, and wherein the connecting plate is held by the middle base. (4) Holding protrusions are provided protrudingly on opposite side surfaces of the middle frame, and the middle base is provided with engaging hooks that engage with the holding protrusions to hold the middle frame. A multipolar modular jack according to claim 1. (5) The above case has a mounting part that can be attached to a mounting frame that is standardized for wiring devices and can attach up to 3 unit-sized wiring devices, and up to 3 wires can be attached to the above mounting frame. The terminal block is set to a size equivalent to one unit size wiring device so that it can be installed, and the terminal block is placed opposite the terminal frame and the terminal block is placed at a fixed position in the case. 2. The multi-polar modular jack according to claim 1, further comprising a locking spring that clamps, between the terminal frame and the tip end of the electric wire inserted through the electric wire insertion hole bored in one side of the jack. (6) The above case has a mounting part that can be attached to a mounting frame that is standardized for wiring devices and can mount up to 3 unit-sized wiring devices, and up to 2 wires can be attached to the above mounting frame. The dimensions are set to be equivalent to 1.5 unit dimensions of wiring devices so that it can be installed, and the terminal block is placed opposite the terminal frame and the terminal frame placed at a fixed position in the case. 2. The multipolar modular device according to claim 1, further comprising a locking spring that clamps between the terminal frame and the tip of the electric wire inserted through the electric wire insertion hole bored in one side of the case. Jack.