JP3012250B2 - Multi-pole modular jack - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to a case in which a modular plug is detachably connected, a modular insert provided with a number of contact springs in contact with the contacts of the modular plug and housed in the case, and an external contact with each contact spring of the modular insert. The present invention relates to a multipolar modular jack having a large number of terminal blocks for connecting electric wires.

[Prior art]

BACKGROUND ART Conventionally, a multipolar modular jack having eight or more contact springs has been provided. In this type of multipolar modular jack, an external electric wire is connected to the contact spring via a terminal having a terminal screw. It has become.

[Problems to be solved by the invention]

In the above-described conventional configuration, a relatively large space is required as a connection space between the terminal and the electric wire, so that the case is large, and the size of one unit of a unit size to be mounted on a mounting frame standardized for wiring equipment is required. The case cannot be applied. Therefore, it is necessary to adopt a construction method different from other wiring devices and the like, and the construction is troublesome.
In addition, since the multi-pole type modular jack has a large number of connections, connecting an external electric wire to a terminal using a terminal screw requires a lot of trouble in connection work, and also in this respect, there is a problem that workability is poor. The present invention is aimed at solving the above problems,
In general, the same installation method as wiring equipment can be applied to improve workability, and also facilitate connection work,
Moreover, it is an object of the present invention to provide a multi-pole modular jack in which a large number of terminals can be accommodated in a small case.

[Means for Solving the Problems]

In the present invention, in order to achieve the above object, the case,
In addition to having an attachment portion that can be attached to a mounting frame that can be attached to a maximum of three wiring devices of a unit size that is standardized for a wiring device and that can be attached to the above-mentioned mounting frame up to a maximum of three. Using a terminal block provided with a locking spring for elastically holding an external electric wire, the terminal block is set to a size corresponding to one wiring device of unit size, and four terminals are arranged in a longitudinal direction connecting the mounting portions on both sides of the case. Two rows of terminal blocks are arranged side by side.

[Action]

According to the above configuration, the case is provided with a mounting portion that can be mounted on a mounting frame capable of mounting up to three wiring devices of a unit size, and a maximum of three cases are provided on the mounting frame. Or one unit of wiring unit of unit size or 1.
Since the dimensions are set to 5 pieces, the same mounting members as the wiring equipment can be used, and the members can be shared, and the construction method can be the same as the wiring equipment, improving the workability. It is. In addition, it can be mounted together with the wiring device on the same mounting frame, and the use form can be diversified. In addition, since two rows of four terminal blocks are arranged side by side in the longitudinal direction that connect the mounting parts on both sides of the case of unit dimensions of the wiring device, eight rows are used while using a relatively small case. Space for arranging the terminal blocks can be secured. In other words, it has a mounting part on both sides of the case that can be attached to a mounting frame that can be attached to a wiring frame of up to three units of unit dimensions standardized for wiring equipment as a case, and up to three can be attached to the mounting frame In this case, a row of four terminal blocks connecting the mounting parts on both sides of the case is used to form two rows of terminal blocks. Since they are arranged side by side, while using a small case equivalent to one wiring unit of unit size generally used only with 6 poles or less, eight cases are limited in the limited space of this case. The terminal blocks can be arranged, and while the terminal block for connecting the external electric wire is provided in the case, the terminal blocks can be arranged in eight.
A pole modular jack can be configured. Further, the terminal block for connecting the external electric wire is constituted by a lock spring for holding the electric wire between the terminal frame and the terminal frame, and has a so-called quick-connecting terminal structure, so that a relatively narrow space is required. Thus, the case can be as small as a wiring device. In addition, because of the quick connection terminal structure, the connection operation can be performed only by inserting the electric wire into the electric wire insertion hole provided in the case, and the connection operation is facilitated. In addition, as described above, by using a terminal block having a quick connection terminal structure while using a relatively small case corresponding to one unit size of the wiring device, it is possible to secure a large number of wiring operations while ensuring ease of connection work. Can be provided. For example, if a terminal block for connecting an external electric wire with terminal screws is used, there is a problem that an external electric wire connected to an adjacent terminal block is obstructed during a wiring operation. The workability is improved by using. As described above, the work on the mounting surface is easy, and the connection work is easy. As a result, the work is easy as a whole, and the workability is greatly improved.

【Example】

As shown in FIGS. 1 and 2, basically, a modular block 2, a terminal block 3, and a door block 4 are housed in a case 1. The case 1 is formed of a synthetic resin in such a size that a maximum of three cases can be mounted on a mounting frame for three large squares standardized by JIS standards or standards of the Japan Wiring Equipment Manufacturers Association. That is, 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 with one side open.
And the cover 20 fitted on the opening surface of the body 10. That is, the assembly legs 21 projecting from both sides of the cover 20 toward the body 10 are inserted into the assembly holes 12 formed in the flanges 11 projecting from both side edges of the body 10, and The body 10 and the cover 20 are connected by locking the hooks 22 provided on the peripheral edge of the assembly hole 12. In the inside of the body 10, the lower half in FIG. 1 is partitioned by a partition wall 13, and a terminal storage chamber 14 is formed in a total of eight sections in two rows of four sections. The cover 20 has a protrusion 23 in the center of the outer surface in the direction of coupling with the body 10, coupling holes 24 are respectively provided on both side surfaces of the protrusion 23, and each side edge of the cover 20 has A pair of coupling claw pieces 25 are protruded. Connection hole 24 and connection claw piece 25
Are connected to the mounting frame described above,
Corresponds to a metal mounting frame, and the dimensions of the coupling claw piece 25 are set so as to correspond to the synthetic resin mounting frame. Table 23
Plug insertion slot 26 for inserting a modular plug into the center of the
Opens. The modular plug inserted through the plug insertion port 26 is connected to the modular block 2. Modular block 2
Are modular insert 30, middle frame 40, middle base 50, connecting plate
It consists of 60. That is, the modular insert 30
Is an eight conductor wire made of a spring material
It is molded integrally with the same at 31 and both ends of the conductor wire protrude from the holding frame 31. One end of each conductor wire is folded back at the projecting portion from the holding frame 31, and becomes a contact spring 32 that individually contacts a plurality of contacts provided on the modular plug. The contact spring 32 inclines so that the distance from the surface adjacent to the surface protruding from the holding frame 31 increases toward the tip. The other end of the conductor wire functions as a lead wire 33 electrically connected to each contact spring 32. On the opposite surface of the holding frame 31 from the surface on which the contact spring 32 is provided, a locking projection
34 are protruded. Modular insert 30 is housed in middle frame 40. Middle frame
40 is made of synthetic resin, the lower surface in FIG. 1 is open,
A guide hole 41 is formed in a part of the upper surface in FIG. The holding frame 31 of the modular insert 30 has a guide hole in the middle frame 40.
The contact spring 32 is mounted in a portion where the 41 is not formed, and the contact spring 32 is disposed in the guide hole 41. In the guide hole 41, a comb tooth 42 for separating the tip of each contact spring 32 is formed so that the contact springs 32 do not contact each other. In addition, a locking hole into which a locking projection 34 protruding from the holding frame 31 is fitted is formed on the peripheral wall of the middle frame 40.
43 are formed. Therefore, when the modular insert 30 is mounted in the middle frame 40, the distal end surface of the modular insert 30 comes into contact with the inner peripheral surface of the middle frame 40, and the locking projection 34
Are fitted in the locking holes 43, and the movement of the modular insert 30 in the vertical direction in FIG. 1 is restricted. In addition, when the contact spring 32 elastically contacts the comb tooth portion 42, the holding frame 31 comes into contact with the inner peripheral surface of the middle frame 40, and the locking projection 34 is prevented from falling out of the locking hole 43. That is, when the modular insert 30 is mounted on the middle frame 40, the holding frame 31 is bent in a state where the distal end of the contact spring 32 is bent so as to approach the holding frame 31.
Is inserted into the middle frame 40, and after the contact spring 32 is fitted to the comb teeth portion 42 and the force that bends the contact spring 32 is removed, the locking projection 34 fits into the locking hole 43. is there. On the outer peripheral surface of the side wall of the middle frame 40, a total of four positioning ridges 44 are provided in a pair on each side wall, and a holding projection 45 is provided between each pair of the positioning ridges 44 provided on each side wall. You. On the middle base 50, a pair of engaging hooks 51 that engage with the holding projections 45 of the middle frame 40 are provided in a protruding manner. Further, the positioning of the middle frame 40 with respect to the middle base 50 by contacting the outer peripheral surface of the middle frame 40 is performed.
The positioning dowels 52 are protruded. Therefore, with the modular insert 30 attached to the middle frame 40, the middle frame 40 is connected to the middle base 50 by engaging the engaging hooks 51 with the holding projections 45. At this time, FIG. As shown, the positioning dowel 52 abuts on the outer peripheral surface of the middle frame 40, thereby preventing the middle frame 40 from being displaced. A through-hole 53 penetrating from the front to the back is provided at the center of the portion of the middle base 50 that is covered by the middle frame 40, and a lead is provided between the holding frame 31 of the modular insert 30 and the periphery of the through-hole 53. A recess 54 is formed that forms a gap through which the line 33 passes. In addition, a portion from the recess 54 to the through hole 53 forms an inclined surface 55 that is inclined so that the width of the through hole 53 becomes narrower toward the inside of the through hole 53. Therefore, the middle frame 40
The lead wire 33 pulled out from the modular insert 30 held at the base frame 50 is introduced into the through hole 53 along the inclined surface 55 through the space between the holding frame 31 and the recess 54, and through the through hole 53. It is pulled out to the back of. In the middle base 50, a total of eight holding holes 56 are formed in two rows, four in each row, in the direction in which the contact springs 32 of the modular insert 30 are arranged, and FIG.
As described above, a step portion 57 is formed inside each holding hole 56 so that the upper and lower portions are narrower than the lower portion. Holding hole 56 is middle base
It penetrates 50 front and back. Holding holes 56 on the lower surface of the middle base 50
The holding groove 58 running in the direction orthogonal to the arrangement direction is formed. The holding grooves 58 are formed in the holding holes 56 in the arrangement direction of the holding holes 56.
, And has a width substantially equal to the diameter of the lead wire 33 of the modular insert 30. Also,
The upper end of the holding hole 56 is formed so as to be located slightly above the step portion 57. Pressing projections 59 are provided on the lower surface of the middle base 50 at positions different from the holding holes 56 so as to correspond to the holding grooves 58. Positioning grooves 18 running vertically in FIG.
Are formed, and by engaging the positioning ridges 19 formed on the inner peripheral surface of the body 10, the positioning of the middle base 50 with respect to the body 10 is performed. A connection plate 60 is mounted in the holding hole 56 of the middle base 40. The connection plate 60 is provided with retaining pieces 61 on both side edges of an intermediate portion in the vertical direction in FIG.
FIG. 2 (a) is formed of a conductive sheet metal in a shape having pressure contact slits 62 and 63 at both upper and lower ends.
The upper end is pressed into the holding hole 56 as shown in FIG. Here, the position of the connection plate 60 with respect to the middle base 50 is regulated by the contact of the retaining piece 61 with the stepped portion 57. With the above-described configuration, the connection plate 60 is inserted with the lead wire 33 of the modular insert 30 inserted into the holding groove 58.
Into the holding hole 56, the lead wire 33 is
And the upper end of the connection plate 60 is
The width of the press-contact slit 62 is reduced by pressing against the inner peripheral surface of the base plate, 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 accommodated in the respective terminal storage chambers 14 of the body 10.
Is constituted by a substantially U-shaped terminal frame 71 opened downward, and a locking spring 72 mounted in the terminal frame 71. One leg of the terminal frame 71 is a slit 73 running in the direction in which the leg protrudes.
To form a pair of connecting pieces 74. Further, at a portion corresponding to the slit 73, a press-contacting protruding piece 75 is protruded from a central piece of the terminal frame 71. On the other hand, the locking spring 72
It has a pair of spring pieces 76a, 76b facing each connection piece 74,
An electric wire is sandwiched between the connection piece 74 and the spring pieces 76a and 76b. As shown in FIG. 2 (b), a wire insertion hole 15 is formed in the bottom wall of the body 10 so as to correspond to each of the terminal storage chambers 14. A release piece 17 that is flexible with respect to the body 10 is formed by the insertion groove 16. The tip of the release piece 17 contacts the lower surface of the spring piece 76b,
A part is inserted between a pair of spring pieces 76b provided on the lock spring 72. Therefore, when the release piece 17 is pressed from the lower surface side of the body 10, a pressing force is applied to the spring piece 76b to cause the spring piece 76b
Can be bent in a direction away from the connection piece 74. That is, the terminal block 3 forms a quick connection terminal together with the body 10, and when the electric wire is inserted through the electric wire insertion hole 15, the connection piece 74 and the spring piece 76a,
76b and the spring piece 7
The leading edge of 6b bites into the wire to prevent the wire from coming off. When removing the electric wire, the pressing force is applied to the release piece 17 to release the pressing force acting on the electric wire from the spring piece 76b, so that the electric wire can be easily pulled out. By the way, a notch groove 77 as shown in FIG. 4 is formed in the partition wall 13 of the body 10 corresponding to each terminal storage chamber 14.
In the peripheral portion 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.
The holding recess 78 has an upper portion formed wider than the lower portion, and has a step portion 79 at an upper and lower middle portion. The retaining piece 61 of the connection plate 60 comes into contact with the step portion 79. Also, a connection plate is provided below the step 79.
The lower part of 60 is press-fitted. The lower end of the notch groove 77 is located below the step portion 79, and the peripheral wall of the holding recess 78 is an inclined surface 78a above the lower end of the notch groove 77. That is, the inclined surface 78a is inclined so as to increase the thickness of the lower partition wall 13 substantially, and when the connecting plate 60 is inserted into the holding recess 78 from above, the connecting plate 60 is easily formed along the inclined surface. It is being introduced to. The press-contact protrusion 75 of the terminal block 70 is inserted into the cutout groove 77.
By inserting the connection plate 60 into the holding recess 78 from a direction orthogonal to the direction 75, the press-contact protruding piece 75 can be pressed into the press-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), the doors 81 and 82 are disposed between a pair of left and right guide projections 83 projecting from the inner surface of the cover 20 around the plug insertion opening 26. Both guide projections
A locking claw 84 is projected from the opposite surface of the
84 allows the doors 81 and 82 to be temporarily held. An operation piece 85 protruding from the cover 20 is provided on one of the door bodies 81. When the door block 4 closes the plug insertion port 26, the operation body 85 is used to hold the operation piece 85 and the door body 81 is connected to the plug insertion port 26.
When the slide is made along the opening surface, the operation piece 85 comes into contact with the end face of the other door body 82, and the door insertion sections 26 can be opened by moving the both 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,
When the door 81 is slid while holding the operation piece 85 with the plug insertion opening 26 open, the projections 86 and 87 are engaged to
1,82 slide at the same time.
As shown in FIG. 2 (b), a stopper projection 88 is provided on the rear surface of the door body 82, and is provided on one end of a holding rib 89 provided on the inner surface of the cover 20 at the periphery of the plug insertion port 26. The movement of the door body 82 is regulated by the contact of the retaining projection 88. Presser rib 89
As shown in FIG. 2 (a), the door body 81 is held between the middle frame 40 and the door body 81 to prevent the door body 81 from rattling. The modular jack having the above configuration is assembled as follows. First, connect the terminal block 3 to the body 10
In the terminal storage room 14. At this time, the terminal block 3 is positioned with respect to the body 10 by inserting the press contact protruding piece 75 into the notch groove 77. Next, as shown in FIG. 3, the assembly in which the middle frame 40, the middle base 50, and the connecting plate 60 of the modular insert 30 are connected is placed in the body 10. At this time, the connection plate 60 is introduced into the holding recess 78 along the inclined surface 78a provided on the partition wall 13, so that the connection plate 60 is
It can be easily joined to 75. At this time,
The positioning groove 18 of the middle base 50 is engaged with the positioning ridge 19 of the body 10 to be positioned with respect to the body 10 of the middle base 50. Further, since the holding projection 59 projecting from the lower surface of the middle base 50 abuts against the terminal frame 71 of the terminal block 3 and presses downward, the position of the terminal block 3 is also fixed. Finally, if the cover 20 is coupled to the body 10 while the door block 4 is temporarily held by 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. As shown in FIG. 5, the modular jack formed as described above has a mounting frame 90 standardized for three large squares, which are switches and outlets, according to the JIS standard and the Japan Wiring Equipment Manufacturers Association standard. Is combined with That is, as described above, since the case 1 is formed to have the same mounting dimensions as the unit dimensions of a general wiring device, up to three cases 1 can be mounted on the mounting frame 90. The mounting frame 90 has holding holes 93a, 93b on both side pieces 92a, 92b surrounding the opening window 91 for engaging the coupling claws 25 protruding from the side edges of the case 1, respectively. An operation piece 94 that can bend 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.
If the case 1 is pressed against the mounting frame 90 from behind the 90, the operation piece 94 is bent and the case 1 can be fitted to the mounting frame 90. At this time, the projecting base 23 projects from the opening window 91. on the other hand,
To remove the case 1 from the mounting frame 90, the operation piece 94 may be pryed with a driver or the like. Connecting pieces 95a, 95b surrounding the opening window 91 and orthogonal to the side pieces 92a, 92b have mounting frames 90 attached to the switch box.
There are provided a long hole 96 for inserting a box screw for connecting the frame, a screw hole 97 for screwing a plate screw for mounting a decorative plate for covering the front surface of the mounting frame 90, and the like. The illustrated mounting frame is a mounting frame 90 made of a synthetic resin. However, in the case of a metal mounting frame, the mounting frame may be connected to the mounting frame using the connection holes 24.

【The invention's effect】

As described above, the present invention includes an attachment portion that can attach a case to an attachment frame that is standardized for a wiring instrument and can attach up to three wiring instruments of a unit size up to three. Since the size is set to the size equivalent to one wiring unit of unit size so that up to three can be mounted, the same mounting member as the wiring device can be used, and the members can be shared, There is an advantage that the construction method can be the same as that of the wiring device, and the workability is improved. In addition, it can be mounted together with the wiring device on the same mounting frame, and the use form can be diversified. In addition, since at least four terminal blocks are juxtaposed in the longitudinal direction connecting the mounting portions on both sides of the case of the unit size of the wiring device, a large number of terminal blocks are arranged in one row while using a relatively small case. Space can be secured. In other words, it has a mounting part on both sides of the case that can be attached to a mounting frame that can be attached to a wiring frame of up to three units of unit dimensions standardized for wiring equipment as a case, and up to three can be attached to the mounting frame In this case, a row of four terminal blocks connecting the mounting parts on both sides of the case is used to form two rows of terminal blocks. Since they are arranged side by side, while using a small case equivalent to one wiring unit of unit size generally used only with 6 poles or less, eight cases are limited in the limited space of this case. The terminal blocks can be arranged, and an 8-pole modular jack can be configured while a terminal block for connecting an external electric wire is provided in the case. Furthermore, since a terminal block having a locking spring for elastically holding an external electric wire is used and has a so-called quick connection terminal structure, connection can be performed in a relatively narrow space. It can be as small as the same. In addition, since it has a quick connection terminal structure, the connection operation can be performed only by inserting the electric wire into the electric wire insertion hole provided in the case, and there is an advantage that the connection operation becomes easy. In addition, as described above, by using a terminal block having a quick connection terminal structure while using a relatively small case corresponding to one unit size of the wiring device, it is possible to secure a large number of wiring operations while ensuring ease of connection work. There is an effect that the terminal block can be provided. For example, if a terminal block for connecting an external electric wire with terminal screws is used, there is a problem that an external electric wire connected to an adjacent terminal block is obstructed during a wiring operation. The workability is improved by using. As described above, the work on the mounting surface is easy, and the connection work is easy. As a result, the work is easily performed as a whole, and the workability is greatly improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention, FIG. 2 (a) is a partially cutaway side view of the same, FIG. 2 (b) is a longitudinal sectional view of the same, FIG. 2 (c) Is a front view of the same, FIG. 2 (d)
FIG. 3 is an exploded perspective view of a main part of the same, with the cover removed, FIG. 3 is an exploded perspective view of a main part of the same, FIG.
The figure is a perspective view showing the relationship with the mounting frame. 1 ... case, 4 ... terminal block, 15 ... wire insertion hole, 30 ... modular insert, 32 ... contact spring, 71 ...
… Terminal frame, 72… Lock spring, 90 …… Mounting frame.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-37800 (JP, A) JP-A-2-299184 (JP, A) JP-A-63-200474 (JP, A) 99969 (JP, U)

Claims (1)

(57) [Claims] 1. A case in which a modular plug is removably connected, a modular insert provided with eight contact springs in contact with the contacts of the modular plug and housed in the case, and a contact spring of each modular insert. Each of the cases has eight terminal blocks for connecting external electric wires,
It has mounting parts on both sides of the case that can be attached to a mounting frame that can be attached to a wiring frame of up to three units of unit dimensions standardized for wiring equipment, and that up to three can be mounted to the above-mentioned mounting frame. The terminal block is provided with a lock spring for elastically holding the external electric wire, and is arranged in a longitudinal direction connecting the mounting portions on both sides of the case. Characterized in that two rows of terminal blocks are arranged in parallel.