JPH02299185A - Multipole modular jack - Google Patents

Abstract

PURPOSE:To improve assembly efficiency by a method wherein a pressure- welded slit is formed on a connection board and a press-welded protruding piece made protrude on a terminal block is press-fitted into the pressure-welded slit. 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 the lead wire of the modular insert to the terminal is eliminated. In addition coupling an inner frame with the inner base is simplified in such a structure that a holding protrusion is made protrude on the side of the inner frame 40 and an engaging hook 51 protruding on the inner base 50 is engaged with this holding protrusion 45.

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. The present invention relates to a multi-pole modular jack that includes a large number of terminal blocks that electrically connect external lines.

[Conventional technology]

Traditionally, note-pole type modular jacks with eight or more contact springs have been provided, and in this type of multi-pole modular jack, the number of contact springs that correspond to the contacts of a modular plug is changed from a modular insert that has a large number of contact springs. 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, the present invention includes a modular block, a modular insert having a large number of contact springs, from which lead wires electrically connected to each contact spring are pulled out, and a guide into which a modular plug is inserted. A middle frame having a hole and holding the modular insert so that the contact spring faces inside the guide hole, a middle base coupled to the middle frame, and a middle base held by the middle base and electrically connected to each of the lead wires. A pressure contact slit is formed in the connection plate, and a pressure contact protrusion protruding from the terminal block is press-fitted into the pressure contact slit. Further, at least a pair of holding protrusions may be provided protruding from the side surface of the middle frame, and a retaining hook may be provided on the middle base to engage with the holding protrusions and hold the middle frame.

[Effect]

According to the above configuration, a modular block is formed in which the lead wire pulled out from the modular insert is connected to the connection plate held on the middle base, and the pressure welding slit provided in the connection plate is connected to the modular block.
Since the pressure welding protrusion protruding into the terminal block is press-fitted, there is no need to solder the lead wire of the modular insert to the terminal, and the contact spring can be connected by simply pressing the connection plate held on the middle base against the terminal block. Electrical connections can be made with the terminal block. As a result, assembly work efficiency is improved. However, if a holding protrusion is provided on the side surface of the middle frame, and an engagement hook protruded from the middle base is engaged with this holding protrusion, the middle frame and the middle base can be easily connected. This makes it easier to assemble modular blocks.

【Example】

As shown in FIG. 1 and 2rXi, it is basically constructed by housing 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 has a body 10 whose negative side is open.
and a cover 20- which is fitted over the opening surface of the body 10. That is, the assembly legs 21 protruding from both sides of the cover 20 toward the body 10 are inserted into the assembly holes 12 provided in the flanges 11 protruding from both side edges of the body 10, and the tips of the assembly legs 21 are hook 2 installed on
2 to the periphery of the assembly hole 12, the body 1
0 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 modier 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 each of the plurality of contact strips 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 is electrically connected to each contact spring 32 by I! It functions as a followed lead 1133. 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 housed within 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, and the contact spring 32 is disposed within the guide hole 41. A comb tooth portion 42 is formed in 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 engage with the holding protrusions 45 of the middle frame 40 are protrudingly provided 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 vertically 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.
The material is introduced into the through hole 53 along the inclined surface 55 through the space between the recess 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 arm 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 connection plate 60 has retaining pieces 61 on both sides of the middle part 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. The terminal blocks 3 are arranged in eight positions so as to be housed in each terminal storage chamber 14 of the body 10, and each terminal block 3 has a substantially U-shaped terminal frame 71 that opens 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 the respective terminal storage chambers 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 and 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 in the middle between the upper and lower parts, and the retaining piece 61 of the connecting plate 60 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, and when the connecting plate 60 is inserted into the holding recess 78 from above, the connecting plate 60 will not move along the inclined surface. This makes it easy to introduce. 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. 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 periphery of the plug insertion port 26 on the inner surface of the cover 20.
A locking pawl 84 is protruded from the opposing surfaces of both guide projections 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
When the door body 81 is slid along the opening surface of the plug insertion port 26 while holding the
The plug insertion opening 26 can be opened by moving the two door bodies 81 and 82. Projections 86 and 87 are provided on the front surface of the door body 81 and the back surface of the door body 82, respectively, and when the door body 81 is slid by holding the operating piece 85 with the plug insertion port 26 open, the projections 86 and 87 are provided. 87 are engaged so that both door bodies 81 and 82 slide at the same time. As shown in FIG. 2(b), a retaining protrusion 88 is provided on the back surface of the door body 82, and a retaining protrusion 88 is provided on the inner surface of the cover 20 at one end of a presser rib 89 protruding from the circumference of the plug insertion opening 26. Due to the contact of the retaining protrusion 88, the door body 82
The amount of movement is regulated. The presser rib 89 is as shown in Fig. 2 (&)
By sandwiching the door body 81 between the inner frame 40 and the inner frame 40, rattling of the door body 81 is prevented. 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 0th order, where the positioning with respect to the body 10 is performed, the 3rd order
As shown in the figure, an assembly in which a modular insert 30, a middle frame 40, a middle curtain stand 50, and a connecting plate 60 are combined is attached to a body 1.
Deliver within 0. At this time, the connection plate 60 is connected to the partition wall 1.
Since the connection plate 60 is introduced into the holding recess 78 along the inclined surface 78a provided at the top 3, the connection plate 60 can be easily connected to the pressure contact protrusion 75. At this time, the positioning member 18 of the middle curtain stand 50 engages with the positioning protrusion 19 of the body 10, so that the middle curtain stand 50 is positioned with respect to the body 10. Further, since the four holding projections 59 protruding from the lower surface of the middle curtain stand 50 abut against the terminal frame 71 of the terminal block 3 and press it downward, the position of the terminal block 3 is also fixed. Finally, if the cover 20 is connected to the body 10 while the door block 4 is temporarily held on the cover 20, the door block 4 is sandwiched between the inner peripheral surface of the cover 20 and the middle frame 40, and the door block 4 is You will be able to 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 mentioned above, since the case 5 is formed to have the same mounting dimensions as the unit dimensions of a general wiring device, the J mounting frame 90
Up to 3 can be attached to the . The mounting frame 90 has an opening j! Both side pieces 92a and 92b surrounding E91 have holding holes 93a and 93b in which the coupling claw pieces 25 protruding from the side edges of the case 1 are engaged, respectively, and one side piece 92a has holding holes 93a and 93b that are engaged with the coupling claw pieces 25 provided protruding from the side edges of the case 1. An operating piece 94 is formed that can be deflected to change the distance. When attaching the case 1 to the mounting frame 90, as shown in FIG. At this time, the protruding base 23 protrudes from the opening window 91. On the other hand, in order to remove the case 1 from the mounting frame 90, it is enough to pry the operation piece 94 with a screwdriver or the like.
Connecting pieces 95a and 95b orthogonal to b include a long hole 96 into which a box screw for connecting the mounting frame 90 to the switch box is inserted, and a screw into which a plate screw for attaching a decorative plate covering the front surface of the mounting frame 90 is screwed. Holes 97 and the like 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, , 6th (!I), the dimensions may be set to 1.5 times the unit dimension, and the terminal blocks 3 may be arranged in a direction perpendicular to the arrangement direction of the contact springs 32.

【Effect of the invention】

As described above, the present invention includes a modular block including a modular insert having a large number of contact springs, from which lead wires electrically connected to each contact spring are pulled out, and a guide hole into which a modular plug is inserted. A middle frame that holds the modular insert so that the contact spring faces the inside of the hole, a middle curtain stand coupled to the middle frame, and a connection plate held by the middle curtain stand and electrically connected to each of the lead wires. A pressure welding slit is formed on the connection plate, and a pressure welding protrusion protruding from the terminal block is press-fitted into the pressure welding slit.The lead wire pulled out from the modular insert is inserted into the middle curtain base. A modular block is formed that is connected to the held connection plate, and the pressure welding piece protruding from the terminal block is press-fitted into the pressure welding slit provided in the connection plate, so it is necessary to solder the lead wire of the modular insert to the terminal. The contact spring and the terminal block can be electrically connected simply by pressing the connection plate held on the middle curtain stand against the terminal block. As a result, there is an advantage that the workability of assembly is improved. In addition, in a case where a holding protrusion is provided protruding from the side surface of the middle frame, and an engagement hook protruding from the middle curtain stand is engaged with this holding protrusion, it is easy to connect the middle frame and the middle curtain stand. This has the advantage of making it easier to assemble the modular block.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing one embodiment of the present invention, Fig. 2rM
(a) is a partially cutaway side view of the same as above, FIG. 2(b) is a longitudinal sectional view of the same as above, FIG. 2(c) is a front view of same as above, and FIG. 2(d)
is a front view of the same as above with the cover removed, Fig. 3 is an exploded perspective view of the main parts of the same, Fig. 4 is an exploded perspective view of the main parts of the same, and Fig. 5
The figure is a perspective view showing the relationship with the above mounting frame, and FIG. 6 is a perspective view showing another embodiment. 1...Case, 2...Modular block, 4...
Terminal block, 30... Modular insert, 32...
...Contact spring, 33... Lead wire, 40... Middle frame,
41... Guide hole, 45... Holding protrusion, 50...
Middle curtain stand, 51... Engagement hook, 60... Connection plate, 6
3... Pressure welding slit, 75... Pressure contact protrusion piece. Agent Patent Attorney Ishi 1) Chief Figure 7 2 (d)

Claims (2)

[Claims] (1) A case into which a modular plug is removably inserted, a modular block that is housed inside the case and has a number of contact springs that come into contact with the contacts of the modular plug, and a modular block that is housed inside the case and has contact springs and an external In a multi-pole modular jack that is equipped with a large number of terminal blocks that electrically connect to the line, the modular block has a large number of contact springs, and a lead wire that is electrically connected to each contact spring is drawn out. a modular insert, a middle frame that includes a guide hole into which the modular plug is inserted and holds the modular insert so that the contact spring faces inside the guide hole, a middle base connected to the middle frame, The lead wires are held and each lead wire is electrically connected to the connecting plate, and the connecting plate has a pressure welding slit, and the pressure welding protrusion protruding from the terminal block is press-fitted into the pressure welding slit. A multi-pole modular jack featuring: (2) At least a pair of holding protrusions protrudes from the side surface of the middle frame, and the middle base is provided with an engaging hook that engages with the holding protrusions to hold the middle frame. The multi-polar modular jack according to claim 1.