JP2826209B2 - Multi-pole modular jack - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-pole modular jack in which a modular insert having a plurality of contact springs for contacting contacts of the modular plug is housed in a case into which the modular plug is inserted. It is.

[0002]

2. Description of the Related Art Conventionally, a multi-pole type modular jack having eight or more contact springs used for a PDS or the like has been provided. In this type of multipolar modular jack, a modular insert holding a contact spring is housed in a case formed by connecting a body and a cover. Further, the body and the cover are joined together by heat-sealing or bonding.

[0003]

The case of the above configuration is
Since they are joined by heat bonding or bonding, there is a problem that it takes time to assemble the case. SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a multi-pole modular jack in which a case can be assembled in a short time.

[0004]

According to the first aspect of the present invention, a case in which a plug insertion opening into which a modular plug is inserted is opened, and a modular fixed in a fixed position in the case and inserted into the case through the plug insertion opening. In a multi-pole modular jack having a modular insert having a large number of contact springs that come into contact with the contacts of the plug, the case has flanges protruding on both side surfaces, and each flange has an assembling hole penetrating back and forth. A unit size that can be attached to a mounting frame standardized for a wiring device using a switch box, consisting of a body and a cover that is protruded from an assembly hole that is inserted into and engaged with an assembly hole and that is connected to the front surface of the body. The modular insert comprises a base made of an insulating material, which includes a number of contact springs and a number of terminal pieces electrically connected to the respective contact springs. Are formed and held, the terminal piece,
The rear part of the body is exposed on one surface orthogonal to the rear surface, and is open facing the surface where the terminal strip is exposed.When the coated wire is pressed in, the insulation coating is broken and the inner conductor of the coated wire is turned into a terminal strip. Each has a pressure contact slit for electrical connection.

According to the second aspect of the present invention, a tension stopper is provided on the rear surface of the body so that a cable in which a plurality of coated electric wires connected to the respective terminal strips are bound can be held between the cable and the rear surface of the body. -ing According to the third aspect of the invention,
A cover with a plug insertion opening for inserting a dura plug
And is fixed to the cover and inserted into the case through the plug insertion slot.
Multiple contacts in contact with the contacts of the modular plug inserted in
A modular insert having a contact spring;
Standardized for wiring equipment using switch boxes
It is formed into a unit size shape that can be attached to the mounting
The inserts have a large number of contact springs and each contact spring
And a large number of electrically connected terminal strips made of insulating material.
Formed on the base of the modular insert, the front of the modular insert
Is inserted into the cover and the modular insert
The protrusions and recesses on both sides and the cover
Screw insert is connected to the cover, and each terminal strip is
Exposed to the rear, each terminal strip is open at one end and covered wire
Breaks down the insulation coating when press-fitting and removes the inner conductor of the coated wire.
Equipped with press-contact slits electrically connected to terminal strips
-ing In the embodiment, the concave / convex engaging portion is
Mounting holes provided in a pair of mounting ribs 27 provided on the inner side surface
28 and the two sides of the middle frame 40 of the modular insert 2
And mounting projections 43 formed.

[0006]

According to the first aspect of the present invention, a body having flanges projecting from both side surfaces and having assembly holes penetrating front and rear in each flange, and assembly legs inserted into and engaged with the assembly holes project. Since the case is composed of the cover and the cover connected to the front surface of the body, when assembling the case, it is only necessary to apply a force in the front-rear direction by combining the body and the cover. is there. Also, the case
Since it is formed in a unit size shape that can be attached to the mounting frame standardized for wiring equipment using switch boxes, standardization for wiring equipment used for embedded switches and outlets mounted using switch boxes It is possible to mount up to three pieces on the set mounting frame. As a result, it becomes possible to mount the device on a wall or the like using a mounting frame or a decorative plate provided conventionally, so that it is not necessary to design a new member for mounting, and further, together with other wiring devices. It can be mounted on one mounting frame to improve usability. Furthermore, a press-contact slit for breaking the insulation coating and electrically connecting the inner conductor of the covered wire to the terminal piece when the covered wire is pressed into the terminal piece exposed to the rear portion of the case and serving as a connection portion with the external wire. Since it is provided, the connection part with the external electric wire can be used as a press contact terminal, and connection with the external electric wire can be performed only by press-fitting into the press contact slit using a covered electric wire as the external electric wire, as a result This makes the connection work easier, and the time required for the connection work is greatly reduced.

According to the second aspect of the present invention, a tension stopper is provided on the rear surface of the body so that a cable in which a plurality of coated electric wires connected to the respective terminal strips are bound can be clamped between the cable and the rear surface of the body. As a result, even if external force is applied to the cable, no tension acts on the connection between the terminal piece, which is a press-fit terminal, and the insulated wire. The state can be stabilized. According to the configuration of the third aspect, the cover is provided with the switch button.
Attach to a standardized mounting frame for wiring equipment using racks
Claim 1 because it is formed in a shape having a possible unit size.
As in the invention of the above, it is used for embedded switches and outlets
Up to 3 units in a standardized mounting frame for wiring equipment
Terminal strips with pressure contact slits.
Connection, the connection with the external wire becomes a crimping terminal.
Line work becomes easy. And before the modular insert
Part is inserted into the cover and modular insert
By the engagement of the concave and convex engaging parts provided on both sides of the
Modular inserts are bonded to the cover, so modular
Modular jack with only two parts, insert and cover
Can be configured.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a modular jack according to the present invention is formed by housing a modular insert 2 and a door 3 in a case 1. FIG. Case 1 has a maximum of three mounting frames for three large squares that are standardized for wiring equipment that is mounted in a form embedded in the mounting surface using a switch box according to the JIS standard and the Japan Wiring Equipment Manufacturers Association standard. It is formed of a synthetic resin to a size that can be attached up to. That is, it has a mounting size equivalent to the unit size of the wiring device that can be mounted on the standardized mounting frame. The case 1 is formed of a body 10 having an open front surface and a cover 20 coupled to the front surface of the body 10. That is, the assembly legs 12 projecting from both sides of the cover 20 toward the body 10 into assembly holes 12 (see FIGS. 14, 15, and 16) provided in the flanges 11 projecting from both side edges of the body 10. The body 10 and the cover 20 are connected as shown in FIG. 3 by inserting the hook 21 and hooking the hook 22 provided at the distal end of the assembly leg 21 to the periphery of the assembly hole 12.

As shown in FIGS. 16 and 17, at the rear of the flange 11, only the upper half of FIG. 1 protrudes rearward to form a body 13, and the lower surface of the body 13 and the lower An opening 14 is formed on the rear surface of the half so as to straddle a corner formed by both surfaces. The cover 20, as shown in FIGS. 9 and 11,
A protrusion 23 is provided at the center of the front surface, and connection holes 24 are respectively formed on both side surfaces of the protrusion 23 (see FIGS. 9 and 13). A claw piece 25 is protruded. The coupling hole 24 and the coupling claw piece 25
The dimensions are set so that the coupling holes 24 correspond to the metal mounting frames and the coupling claw pieces 25 correspond to the synthetic resin mounting frames. As shown in FIG. 8, a plug insertion opening 26 for inserting a modular plug is opened at the center of the protruding base 23.

The modular plug inserted through the plug insertion port 26 is connected to the modular insert 2. Modular insert 2 is formed by connecting jack body 30 and middle frame 40. The jack body 30 is formed by holding eight independent conductive members 31 (see FIG. 4) made of a spring material by a base 32 made of a synthetic resin. Each conductive member has a narrow line shape and a wide terminal piece 3 at one end.
3 (see FIG. 2 and FIG. 5). As shown in FIG. 4, the base 32 covers the inner base 30a having a groove for holding the conductive members so as not to make electrical contact with each other, and covers both side surfaces and a part of the upper surface of the inner base 30a. It is formed by joining the substantially U-shaped outer base 30b. The grooves are formed on the upper surface and both side surfaces of the inner base 30a, and a conductive member is provided between the inner base 30a and the outer base 30b. A spring holder (not shown) protrudes from the front surface of the inner base 30a, and the groove is formed on the upper surface of the spring holder along the protruding direction. One end of each conductive member is bent at the distal end of the spring holder, and a distal end side of the bent portion serves as a contact spring (not shown) elastically contacting the contact of the modular plug. The contact spring is bent from the tip of the spring holder toward the base side of the spring holder, and is arranged so as to be inclined such that the distance from the spring holder becomes greater toward the base side of the spring holder. .

On the other hand, the terminal strip 33 is arranged between the side surface of the inner base 30a and both leg pieces of the outer base 30b. Terminal strip 3
As shown in FIG. 2, a press-fit slit 33 for breaking the insulation coating and bringing the inner conductor into contact when the coated electric wire is press-fitted, as shown in FIG.
a. The press contact slit 33a is open to the front end edge (lower edge in FIG. 2) of the terminal piece 33, and presses the covered electric wire into the press contact slit 33a from below, thereby forming an electric connection between the covered electric wire and the terminal piece 33. Connection can be easily performed. That is, the terminal piece 33 is
This constitutes a press contact terminal. As shown in FIG. 5, on the lower surface of the base 32, the terminal
An electric wire guide groove 34 running in the thickness direction is formed. The wire guide groove 34 is open to the lower surface and the side surface of the base 32 and is formed so as to pass through the press-contact slit 33 a of the terminal piece 33. Further, it is formed slightly wider than the pressing slit 33a. Therefore, the insulated wire is connected to the wire guide groove 34.
Thus, the work can be guided into the press contact slit 33a, and the connection work can be further facilitated.

On both sides of the base 32, engaging projections 35 are protruded at key points between adjacent wire guide grooves 34. The wire stopper 50 is engaged with the engagement protrusion 35. The electric wire stopper 50 is, as shown in FIGS.
The pair of leg pieces 51 arranged along both sides of
The base piece 52 is formed in a substantially U-shape connected by a base piece 52 disposed along the lower surface, and a stopper piece 53 inserted into the wire guide groove 34 protrudes from the base piece 52. The stop piece 53 has a terminal piece 33
The notch groove 54 is formed so as to straddle the terminal piece 33, and the stopper piece 53 can be inserted to a position deeper than the press-contact slit 33a on both sides in the thickness direction of the terminal piece 33. Here, one electric wire stopper 50 includes four stopper pieces 53 so as to correspond to the four terminal pieces 33. As shown in FIG. 4, an engagement recess 55 that engages with the engagement protrusion 35 is formed on the inner side surface of the two leg pieces 51, and when the electric wire stopper 50 is mounted on the base 32, the engagement protrusion 55 is formed. The engagement between the engagement recess 35 and the engagement recess 55 prevents the wire stopper 50 from dropping off the base 32. That is, the wire stopper 50 is coupled to the base 32 in a state where the covered wire pressed into the press-contact slit 33a is pressed by the stopper piece 53, so that the covered wire can be reliably prevented from coming off from the press-contact slit 33a. . In order to remove the electric wire stopper 50 from the base 32, the tip of a flathead screwdriver or the like may be inserted between the leg piece 51 and the base 32 and pryed.

As described above, the middle frame 4 is provided on the front surface of the jack body 30 constructed by attaching the conductive member 31 to the base 32.
0 is combined. That is, the coupling hole 41 formed at the rear end of the middle frame 40 engages with the coupling projection 37 projecting from the front end of the upper surface of the base 32, and the jack main body 30 and the middle frame 40 are coupled. is there. The middle frame 40 has a guide hole 42 at the front.
Is opened, and a spring holder is inserted above the guide hole 42 from the rear surface. At the rear end of the middle frame 40, a comb-shaped separating body is formed at a position to be the rear end of the guide hole 42 so as to separate the front end of each contact spring. Mounting protrusions 43 are formed on both side surfaces of the middle frame 40. The mounting protrusion 43 is formed in a substantially triangular shape such that the amount of protrusion increases rearward and the rear end is orthogonal to the side surface of the middle frame 40. A pair of left and right mounting ribs 27 (see FIGS. 9, 10, and 12) protrude from the inner surface of the cover 20 on both sides of the plug insertion opening 26.
8 are drilled, and the mounting projections 43 are engaged with the mounting holes 28 so that the cover 20 is attached to the middle frame 40.
Are combined. That is, since the jack body 30 is connected to the middle frame 40, the middle frame 40 and the jack body 30 are connected to the cover 20.

The door 3 is formed by combining a pair of doors 61 and 62, as shown in FIG. Each door body 6
The reference numerals 1 and 62 are arranged so that a guide in the left and right direction is provided between the above-described mounting ribs 27, and is sandwiched between the cover 20 and the middle frame 40 so that the front and rear guides are provided. An operation piece 63 protruding from the cover 20 is provided on one of the door bodies 61. When the door 3 closes the plug insertion port 26, the operation body 63 is used to hold the operation piece 63 and open the door body 61 through the opening of the plug insertion port 26. When sliding along the surface, the operation piece 63 comes into contact with the end face of the other door body 62, and the door insertion bodies 26 can be opened by moving both the door bodies 61 and 62. Cover 2
A locking rib 29 is formed on the inner peripheral surface along the periphery of the lower part of the plug insertion port 26, and the door 61 is connected to the locking rib 29.
Thereby, the lower end position of the vertical movement is regulated. Therefore, when closing the plug insertion port 26, when the door body 61 is lowered to a position covering the upper half of the plug insertion port 26, the door body 61 abuts on the locking rib 29 and the downward movement is regulated. It descends to a position covering the lower half of the mouth 26.

The modular jack having the above configuration is assembled as follows. First, the jack body 30
Is joined to the middle frame 40, and then the middle frame 40 is joined with the door 4 inserted into the cover 20. Finally, when the body 10 is connected to the cover 20, a portion provided with the wire guide groove 34 in the lower portion of the jack body 30 is exposed from the opening 14 of the body 10. Further, as shown in FIG. 7, a display plate 15 indicating which position of each terminal strip 33 corresponds to a contact spring is attached to the lower surface of the body 10,
The corresponding relationship with No. 3 is made easy to understand. Here, the jack body 30 and the middle frame 40, the middle frame 40 and the cover 20, and the body 10 and the cover 20 are respectively connected by an engagement relationship between an engagement hole and an engagement projection. In addition, since they are connected by applying a force in the front-rear direction, assembly can be performed in a short time.
Further, as described above, the jack main body 30 and the middle frame 40 can be connected to the cover 20 even if the body 10 is not connected. However, by holding the upper part of the jack main body 30 by the body 10, The rattling of the jack body 30 can be prevented. Body 10
As shown in FIG. 15, a tension stopper 16 formed in a substantially L-shape is formed on the rear surface, and as shown in FIG. Is sandwiched between the tension stopper 16 and the rear surface of the body 10, so that even if an external force acts on the cable 5, no tension is applied to the connection with the terminal 33. A hook 16 a for preventing the cable 5 from dropping is formed at the tip of the tension stopper 16.

As shown in FIG. 18, the modular jack formed as described above is a mounting frame standardized for three large squares, which are standards for switches and outlets, according to the JIS standard and the Japan Wiring Equipment Manufacturers Association standard. 70. 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 can be mounted on the mounting frame 70. The mounting frame 70 includes both side pieces 72a, 72b surrounding the opening window 71.
The coupling claw pieces 25 protruding from the side edges of the case 1 respectively.
Have holding holes 73a and 73b with which one side piece 7
An operation piece 74 that can bend so as to change the distance from the side piece 72a is formed in 2a. Case 1 in mounting frame 70
When attaching the case 1 from behind the attachment frame 70
Is pressed against the mounting frame 70, the operation piece 74 is bent and the case 1 can be fitted to the mounting frame 70. At this time, the projecting stand 23 projects from the opening window 71. On the other hand, in order to remove the case 1 from the mounting frame 70, the operation piece 74 may be pryed with a driver or the like. In the connecting pieces 75a, 75b surrounding the opening window 71 and orthogonal to the side pieces 72a, 72b, a long hole 76 for inserting a box screw for connecting the mounting frame 70 to the switch box and a decorative plate for covering the front surface of the mounting frame 70 are provided. A screw hole 77 or the like into which a plate screw 78 for attaching the screw 80 is screwed is provided. The illustrated mounting frame is a mounting frame 70 made of a synthetic resin. However, in the case of a metal mounting frame, the mounting frame may be coupled to the mounting frame using the coupling holes 24. In the decorative plate 80, a window hole 81 for exposing the projecting base 23 of the case 1 and an insertion hole 82 for inserting the plate screw 78 are formed.

[0017]

According to the first aspect of the present invention, a body having flanges projecting from both sides and having assembly holes penetrating front and rear in each flange, and assembly legs inserted into and engaged with the assembly holes. The case is composed of the cover that is protruded and connected to the front of the body.When assembling the case, it is only necessary to apply force in the front-rear direction by combining the body and the cover. It has the advantage of being able to do so. In addition, since the case is formed in a unit size shape that can be attached to a mounting frame standardized for wiring equipment using a switch box, wiring used for an embedded switch or an outlet mounted using the switch box. There is an effect that up to three units can be attached to a standardized attachment frame for the appliance. As a result, it becomes possible to mount the device on a wall or the like using a mounting frame or a decorative plate provided conventionally, so that it is not necessary to design a new member for mounting, and further, together with other wiring devices. It can be mounted on one mounting frame to improve usability. Furthermore, a press-contact slit for breaking the insulation coating and electrically connecting the inner conductor of the covered wire to the terminal piece when the covered wire is pressed into the terminal piece exposed to the rear portion of the case and serving as a connection portion with the external wire. Since it is provided, the connection portion with the external electric wire can be a pressure contact terminal, and connection with the external electric wire can be performed only by press-fitting the press-fitting slit using a coated electric wire as the external electric wire,
As a result, there is an advantage that the connection operation becomes easy and the time required for the connection operation is greatly reduced.

According to the second aspect of the present invention, a tension stop is provided on the rear surface of the body so that a cable in which a plurality of coated electric wires connected to the respective terminal strips are bound can be clamped between the cable and the rear surface of the body. As a result, even if external force is applied to the cable, no tension acts on the connection between the terminal piece, which is a press-fit terminal, and the insulated wire. There is an effect that the state can be stabilized. According to the configuration of claim 3, the cover is
Standardized equipment for wiring equipment using switch boxes
Is it formed into a shape of unit dimensions that can be attached to the frame
In the same manner as in the first aspect of the present invention, embedded switches and
Three in a standardized mounting frame for wiring equipment used for cents
It has the advantage that it can be mounted up to
Since a terminal strip with a pressure contact slit is provided, external power
When the connection part with the wire becomes a pressure contact terminal and the connection work becomes easy
There are advantages. Moreover, the front of the modular insert
Insert both the modular insert and the
By the engagement of the concave and convex engaging parts provided on the side and the cover,
Since the insert is bonded to the cover,
The modular jack is composed of only two parts, the support and the cover.
It is possible to achieve the effect.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment.

FIG. 2 is a side view showing the embodiment.

FIG. 3 is a perspective view showing an embodiment.

FIG. 4 is a main part rear view showing the embodiment.

FIG. 5 is a bottom view of a main part showing the embodiment.

FIG. 6 is a bottom view showing a connection state with a cable according to the embodiment.

FIG. 7 is a bottom view showing the embodiment.

FIG. 8 is a front view showing the embodiment.

FIG. 9 is a partially cutaway plan view of a cover used in the embodiment.

FIG. 10 is a rear view of a cover used in the embodiment.

FIG. 11 is a side view of a cover used in the embodiment.

FIG. 12 is a sectional view taken along line XX of FIG. 10;

FIG. 13 is a sectional view taken along line YY of FIG. 10;

FIG. 14 is a front view of a body used in the embodiment.

FIG. 15 is a partially cutaway plan view of a body used in the embodiment.

FIG. 16 is a partially cutaway rear view of the body used in the example.

17 is a sectional view taken along the line ZZ of FIG. 14;

FIG. 18 is an exploded perspective view showing the relationship between the mounting frame and the decorative plate according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Modular insert 4 Insulated wire 5 Cable 10 Body 11 Flange 12 Assembly hole 16 Tension stop 20 Body 21 Assembly leg 26 Plug insertion port 30 Jack main body 31 Conductive member 32 Base 33 Terminal piece 33a Pressure contact slit 70 Mounting frame

Claims (3)

(57) [Claims] 1. A case in which a plug insertion opening into which a modular plug is inserted is opened, and a plurality of contact springs fixed at a fixed position in the case and in contact with contacts of the modular plug inserted into the case through the plug insertion opening. In the multi-pole modular jack provided with a modular insert having: a case, a case is provided in which flanges are protruded on both side surfaces, and an assembly hole is formed in each of the flanges so as to penetrate forward and backward; And a cover which is attached to the front surface of the body, and is formed in a unit-size shape that can be attached to a mounting frame standardized for a wiring device using a switch box. And a plurality of terminal pieces electrically connected to the respective contact springs are held on a base made of an insulating material. The rear part of the wire is exposed on one surface perpendicular to the rear surface, and is open facing the surface where the terminal strip is exposed.When the coated wire is pressed, the insulation coating is broken and the inner conductor of the coated wire is turned into a terminal strip. A multi-pole type modular jack, comprising a plurality of press-contact slits for electrical connection. 2. A tension stop which is provided on a rear surface of the body so as to hold a cable, which is a bundle of a plurality of coated electric wires connected to each terminal strip, with the rear surface of the body. The multi-pole type modular jack according to claim 1, wherein: 3. A plug insertion into which a modular plug is inserted.
Cover with open mouth and plug insertion hole fixed to the cover
Modular plug contact inserted into the case through
Insert with multiple contact springs that contact the surface
And a cover is a wiring device using a switch box.
Unit dimensions that can be mounted on standardized mounting frames
The modular insert is formed with multiple contact springs and each
With many terminal pieces each electrically connected to the contact spring
Formed on a base made of insulating material.
The front of the insert is inserted into the cover and
Concavo-convex engagement portions provided on both sides of cover and cover
The modular insert is connected to the cover by the engagement of
Each terminal strip is exposed at the back of the base, and each terminal strip is open at one end.
Breaks insulation coating when press-fitting coated wire
A press-fitting slit for electrically connecting the inner conductor of the wire to the terminal strip
Multi-pole module, each comprising
La Jacques.