JP3022442B2 - 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 type modular jack.

[0002]

2. Description of the Related Art Conventionally, a multipolar modular jack having eight or more contact springs has been provided. This type of multi-pole type modular jack has a terminal for connecting an external electric wire, a type in which an electric wire is sandwiched between a holding plate that advances and retreats with a screw and the terminal plate, and a spring force that approaches the terminal plate. A type in which an electric wire is sandwiched between a locking spring and a terminal plate is provided.

[0003]

The terminal having the above-mentioned structure requires a work for removing a part of the insulating coating and exposing the inner conductor when connecting the coated electric wire. Jacks have a large number of connections, so there is a problem in that connection work takes time. In addition, when the number of terminals is large, the conventional terminal requires considerable assembly work, and the conventional multipolar modular jack cannot be easily mounted on a wall or the like. SUMMARY OF THE INVENTION An object of the present invention is to provide a multipolar modular jack which can be easily mounted on a wall or the like.

[0004]

According to the first aspect of the present invention, there are provided a plurality of contact springs for contacting the contacts of the modular plug and a plurality of press contact slits for press-fitting the external electric wires and electrically connecting them. A modular insert that is provided as a unit with terminal strips provided on a base, a cover formed into a shape that can be attached to a mounting frame standardized for embedded wiring equipment, a body to be connected to the cover, and a cover Frame mounting means for coupling to the mounting frame, wherein the modular insert is housed and held by the cover and the body, and each terminal piece is
The opening is exposed in the body, and a guide hole into which the modular plug is inserted is provided in the modular insert.

According to the second aspect of the present invention, a large number of contact springs that come into contact with the contacts of the modular plug and external electric wires are press-fitted into the electric contacts.
A large number of terminal strips having pressure contact slits for air connection
A modular insert provided on the base and unitized, and a cover formed with a shape that can be attached to a mounting frame standardized for an embedded wiring device, and having a frame mounting means coupled to the mounting frame. And a coupling means for coupling between the modular insert and the cover, and a guide hole into which the modular plug is inserted is provided in the modular insert.

In the invention of claim 3, claim 1 or claim
In any one of the above items 2, the frame attaching means is a coupling claw protruding from both side edges of the cover, or a coupling hole provided on both side surfaces of the cover.

[0007] According to the fourth aspect of the present invention, the first to the fifth aspects of the present invention.
Item 3. The method according to any one of Items 3, further comprising a connecting means for engaging and fixing the modular insert and the cover with each other.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, a modular jack according to the present invention
And the door 3 are housed. 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 includes a body 10 having an open front surface,
And a cover 20 coupled to the front surface of the body 10. That is, assembling holes 12 (FIGS. 14, 15, and 1) provided in flanges 11 protruding from both side edges of the body 10.
6), the assembly legs 21 projecting from both sides of the cover 20 toward the body 10 are inserted, and the hooks 22 provided at the distal ends of the assembly legs 21 are engaged with the peripheral edge of the assembly hole 12. As shown in FIG.
And are combined.

As shown in FIGS. 16 and 17, at the rear of the flange 11, only the upper half of FIG. 2 protrudes rearward to form the body 10, and the lower surface of the body 13 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. 1). As shown in FIG. 4, the base 32 covers an 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 disposed 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 the 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 distal end of the spring holder toward the base 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 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. 1, reference numeral 3 denotes a press-contact slit 33 for breaking an insulating coating and bringing an inner conductor into contact when a covered electric wire is press-fitted.
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. As shown in FIGS. 2 and 4, the wire stopper 50 is attached to the base 32.
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 exerted on the connection portion with the terminal piece 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.

According to this embodiment as described above, the terminal strip 3 exposed at the rear portion of the case 1 and serving as a connection portion with an external electric wire is provided.
3 is provided with a pressure contact slit 33a for breaking the insulation coating when the covered electric wire 4 is press-fitted and electrically connecting the inner conductor of the covered electric wire 4 to the terminal piece 33. The connection with the external electric wire can be performed only by press-fitting the press-fitting slit 33a using the coated electric wire 4 as the external electric wire. As a result, the connection operation becomes easy, and the connection operation becomes easy. The time required is greatly reduced. In addition, since the case 1 is formed in a unit dimension shape that can be attached to the mounting frame 70 standardized for a wiring device using a switch box, the case 1 can be mounted on an embedded switch or an outlet mounted using the switch box. Standardized mounting frame 70 for wiring equipment used
You can attach up to three of them. As a result, it is possible to mount the device on a wall or the like by using the mounting frame 70 or the decorative plate 80 provided conventionally, and it is not necessary to design a new member for the mounting. It can be mounted on one mounting frame 70 together with the device to improve usability. Also, the terminal strip 3 is attached to the base 32 of the modular insert 2.
3, a wire guide groove 34 running in the thickness direction and passing through the pressure contact slit 33a, and a stopper piece 53 inserted into the wire guide groove 34.
Is fixed to the base 32 so that the insulated wire 4 press-fitted into the press-fitting slit 33a can be pressed by the stopper piece 53 of the wire stopper 50. It is possible to reliably prevent the wire 4 from accidentally falling off the terminal piece 33.

Also, a large number of contact springs and a large number of terminal pieces 33
And the modular insert 2 are unitized by holding the bases 32 made of an insulating material, so that it is troublesome to connect a number of terminal members and the like in a case and connect them internally as in a conventional modular jack. Such an assembling operation can be reduced, and a multipolar modular jack of a type mounted on a wall or the like can be easily realized. In addition, the terminal strip itself is made smaller.
Because it can be formed, even if there are many terminal pieces,
The support can be made smaller, resulting in a multi-pole modular
Attach the jack to the mounting frame standardized for wiring equipment
It can be easily formed to the size of the type.

[0019]

According to the first to fourth aspects of the present invention, a large number of contacts that contact the contacts of the modular plug.
A press-fitting slot that press-fits the contact spring and external wire to make electrical connection
Units with many terminal strips
By combining the modular insert with a cover that can be attached to a mounting frame standardized for wiring equipment,
A multipolar modular jack of a type to be attached to a mounting frame standardized for wiring equipment can be easily realized. as a result,
A multipolar modular jack constituted by providing a large number of terminal pieces having a press contact slit can be easily attached to a wall surface or the like by using a conventionally provided member such as an attachment frame. Also, since the terminal strip itself can be formed in a small size,
Modular inserts can be made smaller even when the number of
As a result, multi-pole modular jacks can be
Easy to mount on a standardized mounting frame
Can be formed.

Further, since the guide hole into which the modular plug is inserted is provided together with the contact spring and the terminal piece, a modular insert which can be used independently by connecting the modular plug to an external electric wire is provided. It can be easily converted to a multi-pole type modular jack of a type that is attached to a mounting frame standardized for equipment.

In particular, according to the structure of the first aspect, the opening of the body
Exposing the terminal strip from a part of the body through the mouth
The terminal parts in the body,
Troublesome assembly work such as wiring work inside the body and body
it can.

According to the second aspect of the present invention, since the connecting means for connecting between the modular insert and the cover is provided, not only when the body is connected to the cover but also when the body is not connected to the cover. Even so, it is possible to realize a multipolar modular jack of a type that is attached to a mounting frame standardized for wiring equipment.

According to the fourth aspect of the present invention, the modular insert and the cover are engaged and connected to each other, so that the modular insert can be firmly fixed to the cover and can be assembled in a short time.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment.

FIG. 2 is an exploded perspective 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 20 Cover 24 Coupling hole 25 Coupling claw piece 26 Plug insertion port 28 Mounting hole (an example of the coupling means of the present invention) 30 Jack main body 31 Conductive member 32 Base 33 Terminal piece 33a Press-contact slit 34 Wire guide groove 42 Guide hole 43 Mounting projection (an example of a connecting means of the present invention) 50 Wire stopper 53 Stop piece 54 Notch groove 70 Mounting frame

Continuation of front page (56) References JP-A-10-223321 (JP, A) JP-A-10-223322 (JP, A) JP-A-10-223324 (JP, A) JP-A-10-223325 (JP, A) JP-A-10-223326 (JP, A) JP-A-10-223328 (JP, A) JP-A-10-223329 (JP, A) JP-A-3-1122081 (JP, A) JP-A-62-172671 (JP, A) JP-A-62-172670 (JP, A) JP-A-3-43271 (JP, U) US Patent 4,975,078 (US, A) (58) Fields investigated (Int. Cl. ⁷⁾ H01R 13/73-13/74 H01R 13/33

Claims (4)

(57) [Claims] 1. A by press-fitting a plurality of contact springs and the external wire in contact with the modular plug of contacts pressed to electrically connect
A modular insert unitized by providing a base with a number of terminal pieces having slits, a cover formed in a shape that can be attached to a mounting frame standardized for embedded wiring equipment, and connected to the cover Body and
Frame mounting means for coupling the cover to the mounting frame, wherein the modular insert is housed and held by the cover and the body, and an opening for exposing each terminal piece from a part of the body is provided.
And a guide hole for inserting a modular plug is provided in the modular insert. 2. A press-fitting the large number of contact springs and the external wire in contact with the modular plug of contacts pressed to electrically connect
A modular insert unitized by providing a base with a number of terminal pieces having slits, and formed into a shape that can be attached to a mounting frame standardized for embedded wiring equipment, and connected to the mounting frame A cover provided with frame mounting means for connecting the modular insert and the cover, and a guide hole into which the modular plug is inserted is provided in the modular insert. Multi-pole modular jack. 3. A frame attachment means, projecting from the both side edges of the cover engagement claw piece, or multipole according to any one of claims 1 or claim 2 which is a coupling hole provided on both sides of the cover Type modular jack. 4. The multipolar modular jack according to claim 1 , further comprising a connecting means for engaging and fixing the modular insert and the cover to each other.