JPH0782884B2 - Telephone module - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a telephone modular shack, and more specifically, a modular block to which a plug inserted through a plug insertion opening opened on one surface of a casing is detachably coupled is provided in the casing. It concerns telephone telephone modular jacks.

[Background Art] In this type of telephone modular jack that has been conventionally provided, as shown in FIG. 8, the terminal portion for connecting to the telephone line 5 is a screw terminal having a terminal screw 7. However, it takes a long time to loosen or tighten the terminal screw 7 and the tightening torque varies depending on the operator, so that the connection reliability of the telephone line 5 cannot be guaranteed.

In order to solve this problem, it is conceivable to use a quick-connect terminal as shown in FIGS. 9 and 10, but in the conventional quick-connect terminal, the terminal frame 31 'and a pair of locking springs are used. 3
2'and the release button 8 are used, the number of parts is large, and the release button 8, the locking spring 32 ', the terminal frame 31' are provided in the caking 1.
Since it was necessary to assemble the parts in order, the parts might be entangled with each other, and the assembly work was troublesome.

[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to use a terminal portion as a quick-connect terminal, which has a constant contact reliability regardless of an operator. Another object of the present invention is to provide a telephone module jack which is easy to assemble by blocking the spring.

[Start of Invention] (Structure) In a telephone module jack according to the present invention, a plug to be inserted through a plug insertion opening opened on one surface of a casing is detachably coupled, and a modular block is provided in the casing. A contact pin of the modular block is provided. In a telephone modular jack that has terminals that are electrically connected to each other, the terminals are provided on the inner surface of one leg of the U-shaped terminal frame made of a conductive material and the terminal frame made of sheet metal of a spring material. And a locking spring provided with a locking piece that holds the electric wire between the base piece that abuts and the spring force in a direction that extends from the base piece and approaches the other leg piece, and the inner surface of the other leg piece, On one of the above-mentioned leg pieces of the terminal frame, a cut-and-raised piece is projected so as to approach the base side of the leg piece as it goes inward of the terminal frame and moves away from the leg piece, A slit into which the cut-and-raised piece is inserted is formed, and the end portion of the slit is locked to the cut-and-raised piece so that the terminal frame and the locking spring are integrally combined to form a terminal block. The terminal block is housed in a terminal housing section that is divided to match the terminal block.
The terminal frame and the locking spring in the quick-connect terminal are integrally formed into a block to facilitate the assembly work. Moreover,
A structure in which the cut-and-raised piece is obliquely projected on one leg of the terminal frame and the cut-and-raised piece is inserted into the slit provided in the base piece of the locking spring to hold the locking spring on the terminal frame. Therefore, it is not possible to insert the locking piece into the terminal frame from the opening side of the terminal frame,
The cut-and-raised piece can be dropped into the slit, and the terminal frame and the lock spring can be integrated without involving complicated processes such as welding and riveting.

(Example) In the following description, the front side in FIG. 1 will be referred to as the lower side and the upper side in FIG. 2 will be referred to as the front side.
The terms indicating these directions are used for convenience of description, and do not limit the mounting direction.

As shown in Fig. 1, the telephone modular jack is
Basically, it is composed of a casing 1 composed of a body 11 and a cover 12, a modular block 2 and a terminal block 3 housed in the body 11, and a door 4 arranged in a plug insertion hole 22 of the modular block 2. , Body 1
1, the cover 12 and the door 4 are made of an insulating material such as synthetic resin. In particular, a thermoplastic resin is used for the body 11.

The outer dimensions of the casing 1 are set to a size corresponding to one module of a wiring equipment module standardized so that it can be attached to a ready-made mounting frame. It can be attached to the mounting frame of. Outer flange pieces 13 are respectively extended on both left and right sides of the front end of the body 11, and each outer flange piece 13 is formed with a coupling hole 14 penetrating forward and backward. On the other hand, on the left and right ends of the rear end of the cover 12
17 are extended, and coupling leg pieces 16 each having a hook 15 at the tip end are extended on both left and right sides of the rear surface of each outer flange piece 17. Therefore, by inserting the coupling leg 16 into the coupling hole 14 and locking the hook 15 in the coupling hole 14,
As shown in the figure, the body 11 and the cover 12 are integrally connected.

The inside of the body 11 is divided into three left and right sections by a pair of partition pieces 51 running in the vertical direction. The central compartment serves as a modular storage portion 52 in which the modular block 2 is stored. On the surface of the partition 51, which is the inner side surface of the modular storage part 52, a bottom-up rib 54 that runs in the front-rear direction is projected, and as shown in FIG. 2, the modular block 2 is mounted inside the body 11. The rear surface of the modular block 2 is adapted to float above the bottom surface of the body 11. Each of the left and right compartments in the body 11 is divided into three compartments by a pair of partition pieces 55 running left and right, and a terminal accommodating portion 53 having a size capable of accommodating one terminal block 3 is formed. That is, a maximum of 6 terminal blocks 3 can be installed. Partition ribs 56 running in the front-rear direction are formed on the surface of the partition 51, which is the inner side surface of the terminal housing 53, at the upper and lower central positions of the terminal housing 53.

The cover 12 has a plug insertion opening 61 opening at the center of the front surface. A pair of locking claw pieces 62 are projectingly provided on the tip edges of the left and right outer brim pieces 17 of the cover 12, and a locking recess is formed in a step portion 18 formed at the base of the outer brim piece 17. 63 is formed. The plug insertion port 61 has a substantially rectangular shape, and has a notch portion 64 formed in two steps in the lower part. When the cover 12 is connected to the body 11, the body 11
A space having an appropriate thickness is formed between the front surface of the modular block 2 mounted on and the rear surface of the peripheral edge of the plug insertion opening 61 of the cover 12.

The modular block 2 has a modular main body 21 formed of an insulating material such as synthetic resin, and the modular main body 21 is formed with a plug insertion hole 22 penetrating in the front-rear direction. An elastic linear contact pin is provided in the plug insertion hole 22.
When a plug (not shown) is inserted through a plug insertion opening 61 opening in the front surface of the casing 1, each contact pin 23 makes elastic contact with each corresponding contact of the plug. It is designed to be electrically connected to each other. Lead wires 24 electrically connected to the contact pins 23 are drawn out from the rear side surface of the modular body 21. Also,
Retaining ribs 25 project forward from the left and right sides of the front surface of the modular body 21, and the amount of protrusion of the retaining ribs 25 is formed between the front surface of the modular body 21 and the rear surface of the cover 12. It is set approximately equal to the thickness of the space.

The terminal block 3 is composed of a U-shaped terminal frame 31 made of a conductive material and opened rearward, and a locking spring 32 made of a spring material and mounted in the terminal frame 31. As shown in FIG. 4, the terminal frame 31 has a slit 33 running in the front-rear direction on one leg piece, and a cut-and-raised piece cut and raised with a U-shaped opening side left at the center of the other leg piece. A piece 34 is formed. This cut and raised piece 34
As shown in FIG. 3 and FIG. 4, is projectingly provided inside one leg piece of the terminal frame 31, and is inclined so as to come closer to the base side of the leg piece with increasing distance from the leg piece. Meanwhile, the locking spring 32
Is folded back in half at the front end to form a pair of left and right base pieces 35a, 35b, and the tip end of each base piece 35a, 35b is folded back diagonally forward with respect to the base pieces 35a, 35b. It has a shape in which the locking pieces 36a, 36b are formed. Locking spring 3
2 corresponds to each locking piece 36 from the center of each base piece 35a, 35b.
Slits 37a, 37b reaching the tips of a, 36b are formed,
The upper and lower halves of each locking piece 36a, 36b can independently exert a spring force. Also, the terminal frame 31
When the lock spring 32 is attached to the end of the slits 37a, 37b on the base pieces 35a, 35b side, as shown in FIG.
The lock spring 32 is held by the terminal frame 31 to be blocked. That is, the locking spring 32 is provided between the leg pieces of the terminal frame 31 from the tip side of the leg pieces toward the base side.
If the base piece 35a abuts on the tip of the cut-and-raised piece 34, the locking pieces 36a, 36b are bent and introduced into the terminal frame 31 by pushing. At this time, since the cut-and-raised pieces 34 are inclined, the locking spring 32 can be easily introduced into the terminal frame 31. When the locking piece 32 is further pushed in, the cut-and-raised piece 34 falls into the slit 37a and the locking spring 32 is held by the terminal frame 31. Here, if the locking spring 32 is formed to such an extent that the locking pieces 36a, 36b of the locking spring 32 elastically contact one leg of the terminal frame 31, the holding of the locking spring 32 with respect to the terminal frame 31 will be further enhanced. It can be ensured. Also, since the telephone wire used has a diameter of 0.4 to 0.65 mm and is very thin, the gap between the leg pieces of the terminal frame 31 and the tips of the locking pieces 36a, 36b is very small or the gap is small. To be formed. Further, since the locking pieces 36a, 36b exert spring forces independently, two telephone lines can be connected to one terminal block 3.

There are the following methods for manufacturing the terminal block 3.
That is, a sheet metal of a conductive material is pressed to form a hoop-shaped terminal frame, and a sheet metal of a spring material is pressed to form a hoop-shaped locking spring, which is then blocked in a press die. Then, the hoop-shaped block may be cut and supplied to the assembly line. According to this method, the terminal block 3 can be supplied to the assembly line without using a parts feeder. Alternatively, the terminal frame 31 and the locking spring 32 may be independently cut, then assembled by a block processing machine and then supplied to an assembly line by using a parts feeder. In this case the terminal frame 31
Since the lock spring 32 and the lock spring 32 are blocked, only one parts feeder is required.

The terminal block 3 formed as described above is housed in the terminal accommodating portion 5 of the body 11 as described above. At this time, the partition ribs 56 are inserted into the slits 33, 37a, 37b of the terminal frame 31 and the lock spring 32, so that the terminal block 3 is positioned and the pair of terminals connected to the terminal block 3 is connected. The telephone lines 5 are not in contact with each other and are not entangled. In this way, the terminal frame 31 and the locking spring 32 are assembled into the body 11 in the state of being assembled into one terminal block 3, so that the locking spring and the terminal frame are sequentially installed in the body 11. The assembly work is easier than in the case. Modular block 2 on the front of the center piece of terminal frame 31
Each lead wire 24 thus drawn out is connected by using solder or the like, and each contact pin 23 of the modular block 2 is electrically connected to each corresponding terminal block 3. On the rear surface of the body 11, as shown in FIG.
The wire insertion port 57 is opened at a position corresponding to the leg piece of the lock piece and the tip of the locking piece 36a, 36b, and the release piece 58 is formed integrally with the body 11 adjacent to the wire insertion opening 57. ing. Release piece
A pair of legs 58 are formed in a U-shape that is open forward, and the tip of one leg is provided at a position where it can abut the rear locking piece 36b, and the rear side of the body 11 extends from the rear side. It is separated by a slit 59 and is flexible with respect to the front and rear with respect to the body 11.

By the way, a door 4 is attached to the plug insertion opening 61 in order to prevent dust and the like from entering the casing 1 through the plug insertion opening 61 when the plug is not inserted. Door 4
As shown in FIG. 1 and FIG. 2, a pair of upper and lower door bodies 41, 42
And is mounted in a space between the front surface of the modular block 2 and the rear surface of the opening peripheral edge of the plug insertion opening 61 of the cover 12. The doors 41, 42 are mounted between a pair of left and right holding ribs 25 projectingly provided on the front surface of the modular block 2, and guided by the both holding ribs 25 so as to be slidable up and down. The lower door body 42 is arranged so that the upper end portion thereof overlaps the rear side of the upper door body 41. The lower door body 42 is a central portion in the left-right direction, and an operation piece 43 is projectingly provided at the lower end portion of the front surface. The settings are almost equal. The operation piece 43 is set to a protrusion amount such that it slightly protrudes from the front surface of the cover 12. In this way, the upper door 41 closes the upper half of the plug insertion opening 61, and the lower door 42 closes the lower half of the plug insertion opening 61. It should be noted that the upper door body 41 is locked by an appropriate locking means such as a locking rib so that the upper door body 41 does not drop downward when the door 4 closes the plug insertion opening 61.

When inserting the plug into the plug insertion opening 61 provided with the door 4 as described above, the plug is brought into contact with the lower surface of the operation piece 43 and moved so as to push up the operation piece 43 to move the lower door body.
While pushing up 42, introduce it into the plug insertion opening 61. When the upper surface of the plug comes into contact with the lower edge of the upper door body 41, the upper door body 41 also moves upward together with the lower door body 42, the plug insertion opening 61 is opened, and the plug can be inserted into the plug insertion opening 61. On the contrary, when the plug is pulled out from the plug insertion opening 61, both door bodies 41 and 42 drop downward by their own weight, and the plug insertion opening 61 is automatically closed. That is, when inserting the plug, the operation of opening the door 4 and the introduction into the plug insertion opening 61 are performed in a series of operations, and conversely, when the plug is removed, the door 4 is automatically closed.

The telephone modular jack configured as described above can be mounted on a ready-made mounting frame 71 to which a wiring device module can be mounted, as shown in FIG. This mounting frame 71 is made of synthetic resin, and the wiring equipment module is vertically 3
The size is such that they can be held side by side. Fifth
As shown in FIGS. 6 and 6, the left vertical frame 72 of the mounting frame 71 is provided with a pair of locking holes 73 at positions corresponding to the mounting positions of the wiring device modules, and the right vertical frame 74 is provided with the locking holes 73. Side pieces 75 are provided separately from the right vertical frame 74 at positions corresponding to the mounting positions of the wiring equipment modules. Releasing pieces 76 project from the center of each side frame 75, and a holding hole 77 surrounded by the right vertical frame 74, the side frame 75, and the releasing piece 76 is formed on both sides of the releasing piece 76. . Accordingly, the locking claw pieces 62 provided on the left and right of the casing 1 of the telephone modular jack are provided with the locking holes 73,
And the holding hole 77, the casing 1 is attached to the mounting frame 71.
Is held in. To remove the casing 1 from the mounting frame 71, use a jig such as the tip of a driver to press the release piece 76 so as to increase the distance between the right vertical frame 74 and the side frame 75.
The engagement with the locking claw piece 62 is released. Horizontally long mounting holes 78 for mounting to the switch box 6 and screw holes 79 for screwing a decorative plate (not shown) are formed at both upper and lower ends of the mounting frame 71. Mounting frame 71
The metal mounting frame 71 has a locking claw that can be inserted into the locking hole 63 provided in the casing 1 formed on the inner edge of the opening. Locking hole 63
The casing 1 is held by plastically deforming a part of the mounting frame 71 so that the casing 1 is inserted into.

[Advantages of the Invention] As described above, the present invention includes, in the casing, a modular block to which a plug inserted through a plug insertion opening opened on one surface of the casing is detachably coupled, and each contact pin of the modular block is electrically connected. In a telephone modular jack having terminals that are electrically connected to each other, the terminals are made of a U-shaped terminal frame made of a conductive material and a base made of a metal plate made of a spring material and abutting on the inner surface of one leg of the terminal frame. One of the terminal frame and the locking spring having a locking piece for holding the electric wire between the base piece and the inner surface of the other leg piece by the spring force in the direction of approaching the other leg piece, On one of the leg pieces, a cut-and-raised piece is projected so as to approach the base side of the leg piece as it goes inward of the terminal frame and away from the leg piece, and the cut-and-raised piece is inserted into the base piece of the locking spring. To be slit The terminal frame and the locking spring are integrally combined by locking the end of the slit to the cut-and-raised piece to form a terminal block, and the partition is divided in the casing so as to match the terminal block. The terminal block is installed in the provided terminal housing, and the terminal frame and locking spring of the quick-connect terminal can be integrated into a block and handled as one part, reducing the number of parts in assembly work. Therefore, the assembling work becomes easy. Further, since it is a quick-connect terminal, there is an advantage that the connection state does not depend on the operator as in the conventional terminal screw type terminal portion, and the contact reliability is guaranteed. Moreover, a structure in which the cut-and-raised piece is obliquely projected on one leg of the terminal frame and the cut-and-raised piece is inserted into the slit provided in the base piece of the locking spring to hold the locking spring on the terminal frame. Since it is adopted, you can drop the cut-and-raised piece into the slit simply by inserting the locking piece into the terminal frame from the opening side of the terminal frame, without complicated steps such as welding and riveting. The terminal frame and the locking spring can be integrated.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is a partially cutaway plan view of the same as above, FIG. 3 is a sectional view of an essential part of the same, and FIG. 4 is an exploded perspective view of an essential part of the same. FIG. 5 is a front view of the same frame mounted on the mounting frame, FIG. 6 is a perspective view of the mounting frame used for the same, and FIG. 7 is a perspective view of a telephone jack according to the present invention. The figure is a cross-sectional view showing a conventional example,
FIG. 9 is an exploded perspective view of an essential part showing another conventional example, and FIG. 10 is a sectional view of the same. 1 is a casing, 2 is a modular block, 23 is a contact pin, 3 is a terminal block, 31 is a terminal frame, 32 is a lock spring, 34
Is a cut-and-raised piece, 35a and 35b are base pieces, 36a and 36b are locking pieces, 37a and 37b
Is a slit, 53 is a terminal housing portion, and 61 is a plug insertion port.

Claims (2)

[Claims] 1. A modular block, to which a plug inserted through a plug insertion opening opened on one surface of a casing is detachably coupled, is provided in the casing, and terminal portions electrically connected to contact pins of the modular block are provided. In the telephone modular jack which has, the terminal portion is formed by a U-shaped terminal frame made of a conductive material, and a base piece made of a metal plate made of a spring material and abutting against the inner surface of one leg of the terminal frame and the base piece. A locking spring having a locking piece for holding an electric wire between the locking piece and the inner surface of the other leg piece by a spring force in the direction of approaching the other leg piece. An inclined cut-and-raised piece is provided so as to approach the base side of the leg piece as it goes away from the leg piece inward of the frame, and a slit for inserting the cut-and-raised piece is formed in the base piece of the locking spring. Edge of The terminal frame and the locking spring are integrally coupled to each other by being locked to the cut-and-raised piece to form a terminal block, and the terminal block is provided in the terminal accommodating portion that is partitioned so as to match the terminal block in the casing. Telephone modular jack, which is characterized by being installed. 2. A terminal frame and a locking spring are in contact with each other without the electric wire being sandwiched therebetween.
Telephone modular jack described in paragraph.