JPH05174898A - Exposing type modular jack - Google Patents

Abstract

PURPOSE:To provide an exposing type modular jack which can carry out the wire connection work with an external line easily by applying a pressure welded terminal to a connection with an external line. CONSTITUTION:A housing 1 is formed of a base 11 installed to an installing surface such as a wall surface, a body 12 combined to the base 11, and a cover 13 combined removable to the body 12. A modular insert 2 to connect a modular plug is combined to the body 12. The modular insert 2 is provided with plural terminal pieces connected electrically to plural contact springs 45 respectively. Each terminal piece has a pressure welded slit which is opened by contacting to one end edge, and connects electrically the inner conductor of a covered wire to the terminal piece by breaking the insulating cover when the covered wire is pressure-inserted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention accommodates a modular insert having a plurality of contact springs for contacting the contacts of a modular plug inside a housing attached so as to abut a mounting surface such as a wall surface. It is related to the exposed modular jack.

[0002]

2. Description of the Related Art Conventionally, an exposed type modular jack having a plurality of contact springs has been provided. In this type of exposed type modular jack, as a terminal for connecting an external electric wire, there was a type in which the electric wire was sandwiched between a holding plate and a terminal plate which moved forward and backward together with a screw, and a spring force in the direction of approaching the terminal plate. There is provided a type in which an electric wire is sandwiched between a lock spring and a terminal plate.

[0003]

The terminal having the above-mentioned structure requires a work of removing a part of the insulating coating to expose the inner conductor when connecting the covered electric wire, and is particularly a multi-pole modular type. Since there are many connections in the jack, there is a problem that the connection work takes time. The present invention is intended to solve the above-mentioned problems, and it is an object of the present invention to provide an exposed modular jack that facilitates connection work with an external electric wire by adopting a pressure contact terminal at a connection portion with the external electric wire. It is a thing.

[0004]

In order to achieve the above-mentioned object, the plug insertion port into which the modular plug is inserted is fixed to a fixed position in the housing and a housing having an opening on the peripheral surface. In an exposed modular jack provided with a modular insert having a plurality of contact springs that come into contact with the contacts of the modular plug inserted into the housing through the plug insertion port, the housing is configured to abut on a mounting surface such as a wall surface. Formed by a base attached to the construction surface by the attaching means, a body coupled to the base to which the modular insert is coupled, and a cover detachably coupled to the body to cover the modular insert,
The modular insert is formed by holding a plurality of contact springs and a plurality of terminal pieces electrically connected to the respective contact springs on a base made of an insulating material, and each terminal piece has one end of the terminal piece. Each of them is provided with a pressure contact slit which is open to the edge and breaks the insulating coating when the coated electric wire is press-fitted to electrically connect the inner conductor of the coated electric wire to the terminal piece.

According to the second aspect of the invention, the two modular inserts are mounted in parallel on the body.

[0006]

According to the first aspect of the invention, when the coated electric wire is press-fitted into the terminal piece which is a connection portion with the external electric wire, the insulating coating is broken and the inner conductor of the coated electric wire is electrically connected to the terminal piece. Since the press contact slit is provided, the connection part with the external electric wire can be used as the press contact terminal, and it is possible to connect with the external electric wire only by pressing the cover electric wire as the external electric wire into the press contact slit. As a result, the wiring work is facilitated and the time required for the wiring work is greatly reduced. In addition, a housing is attached to a construction surface by a mounting means such that it abuts a mounting surface such as a wall surface, a body coupled to the base and a modular insert, and a detachable coupling to the body to form a modular Since it is formed by the cover that covers the insert, the function can be shared by providing the body with the holding means for holding the modular insert and fixing the wall to the wall by the base.

According to the structure of claim 2, since the two modular inserts are arranged in parallel in the body, two 6-pole or 8-pole modular inserts or 6-pole and 8-pole modular inserts are provided. By providing one by one, various products can be developed according to the purpose while using the housings having the same structure.

[0008]

【Example】

(Embodiment 1) As shown in FIG. 1, a modular jack of the present invention is formed by housing a modular insert 2 and a door 3 in a housing 1. The housing 1 includes a flat plate-shaped base 11 that is attached to a mounting surface such as a wall surface by a mounting means such as a double-sided adhesive tape, a body 12 that is coupled to the base 11 and holds the modular insert 2, and a body 12.
And a cover 13 that covers the modular insert 2 by being fitted to the. Base 11, body 12, cover 1
3 is made of synthetic resin. At the four corners of the surface of the base 11 facing the body 12, the engaging pieces 14 are respectively provided.
By projecting and engaging the tips of the engaging pieces 14 with the engaging holes 15 provided at the four corners of the body 12.
The body 12 is connected to the body 1. Plug insertion port 1 into which a modular plug is inserted in the body 12
A door holding frame 16 having an opening 6a is provided in a protruding manner, and a holding wall 17 is provided so as to face the door holding frame 16 in a protruding manner. Further, a pair of holding walls 18 facing each other are provided in the vicinity of both sides of the door holding frame 16 so as to project therefrom. The door holding frame 1 is provided at the tip of the holding wall 17.
A pressing protrusion 17a is provided on the surface facing the nozzle 6, and a guide groove 18a running in the protruding direction is formed on the surface facing both holding walls 18. Further, a locking projection 18b is provided at a portion excluding the guide groove 18a at an intermediate portion of the opposing surfaces of the both holding walls 18 in the projecting direction. A notch window 19 is formed in the cover 13 at a portion corresponding to the plug insertion opening 16a.

As shown in FIG. 2, the modular insert 2 is formed by connecting a jack body 30 and a middle frame 40. The jack body 30 is formed by holding eight independent conductive members 31 (see FIG. 3) made of a spring material by a synthetic resin base 32. Each conductive member is formed by punching a sheet metal into a shape having a narrow linear shape and having a wide terminal piece 33 (see FIGS. 3 and 4) at one end. As shown in FIG. 3, the pedestal 32 covers an inner pedestal 30a having grooves for holding the respective conductive members so as not to electrically contact each other, and both side surfaces and a part of the lower surface of the inner pedestal 30a. It is formed by combining with a substantially U-shaped outer base 30b.
The groove is formed on the lower surface and both side surfaces of the inner base 30a,
A conductive member is arranged between the inner table 30a and the outer table 30b. Further, a spring holder (not shown) is provided on the front surface of the inner table 30a, and the groove is formed on the lower surface of the spring holder along the projecting direction. One end of each conductive member is bent at the tip of the spring holder, and the tip end side of the bent portion serves as a contact spring 45 that elastically contacts the contact of the modular plug. The contact spring 45 is bent from the tip of the spring holder to the base side of the spring holder, and is arranged so as to be inclined so that the distance to the spring holder increases toward the base side of the spring holder. It

On the other hand, the terminal piece 33 is arranged between the side surface of the inner base 30a and both leg pieces of the outer base 30b. Terminal piece 3
As shown in FIG. 4, 3 is a press-contact slit 33 that breaks the insulating coating and presses the inner conductor when the coated electric wire is press-fitted.
a. The press contact slit 33a is opened to face the tip edge (upper edge in FIG. 2) of the terminal piece 33, and by pressing the covered wire into the press contact slit 33a from above in FIG. 2 (below in FIG. 3). Coated wire and terminal piece 3
The electrical connection with 3 can be easily made. That is, the terminal piece 33 constitutes a pressure contact terminal. On the upper surface of the base 32, as shown in FIG.
Wire guide groove 34 running in the thickness direction of the terminal piece 33 with the terminal 3 interposed therebetween.
Is formed. The wire guide groove 34 is open to the upper surface and the side surface of the base 32, and the pressure contact slit 3 of the terminal piece 33 is formed.
3a is formed. In addition, the pressure contact slit 33
It is formed slightly wider than a. Therefore, the covered electric wire is guided by the electric wire guide groove 34 to guide the pressure contact slit 33.
It can be introduced into a, and the wiring work becomes easier.

On both sides of the base 32, engaging protrusions 35 are provided in the places between the adjacent electric wire guide grooves 34. The wire stopper 50 is engaged with the engagement protrusion 35. As shown in FIG. 3, the wire stopper 50 includes a pair of leg pieces 51 arranged along both side surfaces of the base 32 and a base piece 52 arranged along the lower surface (the upper surface in FIG. 2) of the base 32. The base piece 52 is provided with a stopper piece 53 that is inserted into the wire guide groove 34. A notch groove 54 is formed in the stopper piece 53 so as to straddle the terminal piece 33.
The stopper pieces 53 can be inserted to positions deeper than the pressure contact slits 33a on both sides in the thickness direction. Here, one electric wire stop 50 has four terminal pieces 33.
In order to correspond to the above, four stop pieces 53 are provided. As shown in FIG. 3, the engagement protrusions 35 are formed on the inner surfaces of the leg pieces 51.
Is formed with the engaging recess 55, and when the wire stopper 50 is mounted on the base 32, the engaging protrusion 35 and the engaging recess 55 are engaged with each other, so that The base 32 is prevented from falling off. That is, since the wire stopper 50 is coupled to the base 32 in a state in which the covered electric wire press-fitted into the press-contact slit 33a is pressed by the stopper piece 53, the covered electric wire is reliably prevented from coming off from the press-contact slit 33a. .. To remove the wire stopper 50 from the base 32, a tip end of a flat-blade screwdriver or the like may be inserted between the leg piece 51 and the base 32 and twisted.

On the front surface of the jack body 30 constructed by attaching the conductive member 31 to the base 32 as described above, the middle frame 4 is provided.
0s are combined. That is, since the coupling hole 37 formed at the rear end of the middle frame 40 is engaged with the coupling protrusion 37 projecting from the front end of the lower surface of the base 32, the jack body 30 and the middle frame 40 are coupled. is there. The middle frame 40 has a guide hole 42 on the front surface.
Is opened, and a spring holder is inserted from the rear surface below the guide hole 42. Further, at the rear end of the middle frame 40, a comb-shaped separator is formed at a position to be the rear end of the guide hole 42 so as to separate the front ends of the contact springs 45. The notches 44 are formed on both sides of the middle frame 40, and the notches 4
A mounting protrusion 43 is provided so as to sandwich 4 therebetween. The attachment protrusion 43 is introduced into the guide groove 18a of the holding wall 18 provided on the body 12, and the notch 44 engages with the locking protrusion 18b provided on the holding wall 18. In addition, the pressing protrusion 17 a provided on the holding wall 17 engages with the jack body 30 so that the body 12
The modular insert 2 is fixed to the. Although eight contact springs 45 and eight terminal pieces 33 are provided here, six contact springs and six terminal pieces 33 may be provided.

By the way, the door 3 is formed by combining a pair of door bodies 21, 22 as shown in FIG. Each door 2
1, 22 are guided by a door holding frame 16. One door body 21 is provided with an operation piece 23 protruding from the plug insertion opening 16a. With the door 3 closed the plug insertion opening 16a, the door piece 21 is held by the operation piece 23. When it is slid along the opening surface of the other door body 22, the operation piece 23 comes into contact with the end surface of the other door body 22, and both door bodies 21,
The plug insertion opening 26 can be opened by moving 22. Further, a spring receiving piece 24 is provided on the door body 21 in a protruding manner, and by holding a return spring 25 made of a coil spring between the spring receiving piece 24 and the base 11, the door 3 is biased in the closing direction. There is.

According to the above construction, the exposed type modular jack can be easily constructed only by assembling the modular insert 2 together with the door 3 into the housing 1. The same housing 1 can be commonly used for the 6-pole type modular jack. Further, since the press contact terminal is used for connection with the external electric wire, there is no need to remove the covering of the covered electric wire, and there is an advantage that the connecting work becomes easy when a large number of connecting wires are required.

(Embodiment 2) In this embodiment, as shown in FIG. 5, two modular inserts 2 are arranged side by side by forming the housing 1 to have a width almost twice that of the construction of Embodiment 1. It can be built in. Other configurations are similar to those of the first embodiment. According to this configuration, the housing 1
Depending on the combination of the modular inserts 2 to be installed inside, two 6 pole types or 8 pole types can be provided, or 6 pole type and 8 pole type
The polar type can be provided one by one, and the same housing 1 can be used to develop a plurality of product types.

[0016]

According to the first aspect of the present invention, when the coated electric wire is press-fitted into the terminal piece serving as a connecting portion with the external electric wire, the insulating coating is broken to electrically connect the inner conductor of the coated electric wire to the terminal piece. Since the press contact slit is provided, the connection part with the external electric wire can be used as the press contact terminal, and it is possible to connect with the external electric wire only by pressing the cover electric wire as the external electric wire into the press contact slit. As a result, there is an advantage that the wiring work becomes easy and the time required for the wiring work is significantly shortened. In addition, a housing is attached to a construction surface by a mounting means such that it abuts a mounting surface such as a wall surface, a body coupled to the base and a modular insert, and a detachable coupling to the body to form a modular Since it is formed by the cover that covers the insert, there is an advantage that the holding means for holding the modular insert is provided in the body, and the fixing to the wall surface is performed by the base so that the functions can be shared.

According to the second aspect of the present invention, since the two modular inserts are arranged side by side in the body, two 6-pole or 8-pole modular inserts are provided, or one 6-pole and 8-pole modular insert is provided. There is an advantage that various products can be developed according to the purpose while using the housings having the same structure by providing them individually.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing a modular insert used in an embodiment.

FIG. 3 is a rear view showing the modular insert used in the embodiment.

FIG. 4 is a main part plan view showing a modular insert used in an embodiment.

FIG. 5 is an exploded perspective view showing a second embodiment.

[Explanation of symbols]

 1 Housing 2 Modular Insert 11 Base 12 Body 13 Cover 16a Plug Insertion Port 32 Base 33 Terminal Piece 33a Pressure Contact Slit 45 Contact Spring

Claims (2)

[Claims] 1. A housing having a plug insertion opening into which a modular plug is inserted is opened on a peripheral surface, and a plurality of contacts fixed to a fixed position in the housing and contacting a contact of the modular plug inserted into the housing through the plug insertion opening. In an exposed modular jack provided with a modular insert having two contact springs, the housing has a base attached to a construction surface by a mounting means so as to abut a mounting surface such as a wall surface, and a modular insert coupled to the base. Is formed by a body to which is coupled and a cover that is detachably coupled to the body and covers the modular insert, and the modular insert includes a plurality of contact springs and a plurality of terminals electrically connected to each contact spring. Each terminal piece is opened by facing one end edge of the terminal piece. An exposed modular jack, each of which is provided with a pressure contact slit that breaks the insulating coating when the coated electric wire is press-fitted to electrically connect the inner conductor of the coated electric wire to the terminal piece. 2. The exposed modular jack according to claim 1, wherein two modular inserts are attached in parallel to the body.