JPH0430782Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a modular telephone jack, more specifically, a modular block to which a plug inserted through a plug insertion hole opened on one side of the casing is detachably connected to the casing. This invention relates to the structure of the terminal section of the telephone modular jack provided inside the telephone modular jack.

[Background Art] In this type of telephone modular jack that has been conventionally provided, as shown in FIG. 11, the terminal portion for connecting to the telephone line 5 is a screw terminal equipped with a terminal screw 7. Since it is hot, it takes time to loosen and tighten the terminal screw 7, and the tightening torque varies depending on the installer, so there is a problem that connection reliability of the telephone line 5 cannot be guaranteed.

In order to solve this problem, a terminal frame made of a conductive material and a locking spring made of a spring material that clamps the telephone line between the terminal frame and the terminal frame by applying a spring force in the direction of approaching the terminal frame. It is possible to use connection terminals, but when the specifications are such that two telephone wires are inserted and connected at the same time for sending wiring, it may not be possible to hold the two telephone wires with different wire diameters (because the wire diameter If they are different, the same locking spring will leave a large gap in the larger diameter telephone wire, making it impossible to hold the smaller diameter telephone wire), and if one telephone wire is removed, the other telephone wire may also be removed. It was hot.

[Purpose of the invention] The present invention was made in view of the above points, and its purpose is to use a terminal section as a quick connection terminal so that constant connection reliability can be obtained regardless of the operator. To provide a structure of a terminal part of a telephone modular jack which can hold two electric wires separately in one terminal part and can be used for sending and wiring specifications.

[Disclosure of the invention] (Structure) The structure of the terminal portion of the telephone modular jack according to the invention is such that the casing has a modular block to which a plug inserted through a plug insertion opening opened on one side of the casing is removably connected. In a telephone modular jack, the terminal part is made of a conductive material and a spring material, and the terminal part is made of a conductive material and is oriented toward the terminal frame. It consists of a locking spring that applies a spring force to clamp the telephone line between it and the terminal frame, and the locking spring has two independent spring parts separated by a slit. By providing the locking spring with an independent spring section divided into two parts by a slit, two telephone lines can be inserted and connected separately, and it can also be used for sending wiring specifications.

(Example 1) In the following explanation, the upper side in Figure 1 is referred to as the front, and the front side in Figure 2 is referred to as the lower side. However, terms indicating these directions are used for convenience of explanation, and the It does not limit the direction.

As shown in FIG. 2, the telephone modular jack basically consists of a body 11 and a cover 12.
A casing 1 consisting of a casing 1, a modular block 2 and a terminal block 3 housed in a body 11.
and a door 4 disposed in the plug insertion port 61 of the modular block 2, and the body 11,
The cover 12 and the door 4 are made of an insulating material such as synthetic resin. In particular, thermoplastic resin is used for the body 11.

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

Inside the body 11 is a pair of partition pieces 51 running vertically.
It is divided into three sections on the left and right. The central compartment becomes a modular storage section 52 in which the modular block 2 is stored. A bottom raising rib 54 running in the front and rear direction is protruded on the surface of the partition piece 51 which is the inner surface of the modular storage section 52, and as shown in FIG. The rear surface of the modular block 2 is made to float above the bottom surface of the body 11. Partition pieces 55 running left and right in each left and right compartment of the body 11
A terminal accommodating portion 53 is formed which is large enough to accommodate one terminal block 3 at a time. A partition rib 56 running in the front-rear direction is formed on the surface of the partition piece 51, which is the inner surface of the terminal storage part 53, at the vertical center position of the terminal storage part 53.

The cover 12 has a plug insertion opening 61 that opens at the center of the front surface. A pair of locking pawls 62 are protruded from the tip edges of the left and right outer flange pieces 17 of the cover 12, and a locking recess is provided in the stepped portion 18 formed at the base of the outer flange piece 17. 63 is formed. The plug insertion port 61 has a substantially rectangular shape, and has two holes at the bottom.
It has a shape with a notch 64 formed in the shape of a step. When the cover 12 is connected to the body 11, a space with an appropriate thickness is formed between the front surface of the modular block 2 mounted on the body 11 and the rear surface of the opening periphery of the plug insertion opening 61 of the cover 12.

The modular block 2 has a modular main body 21 made of an insulating material such as synthetic resin, and the modular main body 21 is formed with a plug insertion hole 22 penetrating from front to back. Plug insertion hole 2
A large number of elastic linear contact pins 23 are protruded in the inside of the casing 1, and when a plug (not shown) is inserted through the plug insertion opening 61 opened at the front of the casing 1, each contact pin 23 come into elastic contact with the corresponding contacts of the plug and are electrically connected to each other. Lead wires 24 electrically connected to each contact pin 23 are drawn out from the rear side surface of the modular body 21. Further, on both left and right sides of the front surface of the modular main body 21, holding ribs 25 are provided so as to protrude toward the front.
The amount of protrusion is between the front of the modular body 21 and the cover 1.
The thickness is set approximately equal to the thickness of the above-mentioned space formed between the rear surface of the holder and the rear surface of the holder.

The terminal block 3 consists of a U-shaped terminal frame 31 made of a conductive material and open to the rear, and a locking spring 32 made of a spring material and mounted inside the terminal frame 31. As shown in FIG. 5, the terminal frame 31 has a slit 33 running in the front-rear direction on one leg, and a slit 33 cut out in the center of the other leg leaving a U-shaped opening. A piece 34 is formed. Further, a connecting piece 38 is formed by cutting and raising the center piece of the terminal frame 31 forward, and a press-fitting slit 39 that is open to the front is formed in the connecting piece 38.
On the other hand, the locking spring 32 is made by folding a sheet metal in half at the front end to form a pair of left and right base pieces 35a, 35b, and the tip of each base piece 35a, 35b is diagonally disposed with respect to the base pieces 35a, 35b. It has a shape in which it is folded back forward to form a pair of front and rear locking pieces 36a, 36b. Each base piece 35 is attached to the locking spring 32.
Each lock piece 36 corresponds to the central part of a and 35b.
Slits 37a, 37b reaching the tips of a, 36b
The upper and lower halves of each locking piece 36a, 36b are formed into two independent spring parts 32a, 32b so that spring force can be applied independently. In addition, when the locking spring 32 is attached to the terminal frame 31, the ends of the slits 37a and 37b on the base pieces 35a and 35b are locked to the cut and raised pieces 34,
The locking spring 32 is held by the terminal frame 31 and is shaped into a block. Here, the locking spring 32
If the locking spring 32 is formed to such an extent that the locking pieces 36a and 36b of the terminal frame 31 come into elastic contact with one of the leg pieces of the terminal frame 31, the locking spring 32 can be held against the terminal frame 31 more reliably. It is something. Furthermore, between the leg pieces of the terminal frame 31 and the tips of the locking pieces 36a and 36b, the electric wire used for the telephone line 5 is
It is very thin at 0.65mm, so there is no gap or it is very small. Furthermore, independent spring parts 32a, 32
Since spring force is applied independently, two telephone lines 5 can be connected to one terminal block 3.

The terminal block 3 formed as described above is housed in the terminal housing portion 53 of the body 11 as described above. At this time, the terminal frame 31 and the locking spring 32
A partitioning rib 56 is inserted into each of the slits 33, 37a, and 37b to position the terminal block 3 and prevent the pair of telephone wires 5 connected to the terminal block 3 from coming into contact with each other and getting tangled. I have to. In this way, the terminal frame 31 and the locking spring 32 are assembled into one terminal block 3 and installed in the body 11, so the locking spring and the terminal frame are sequentially delivered into the body 11. This makes the assembly work easier than in the case of the conventional method. Further, as shown in FIG. 6, tilt prevention ribs 80 are provided at the four corners of the terminal storage portion 53 to match the thickness of the terminal frame 31, and the terminal frame 31 has cutouts 81 that escape from the tilt prevention ribs 80. A tilt prevention rib 80 prevents the lock spring 32 from tilting so that the lock spring 32 does not get caught when the terminal frame 31 is inserted. Furthermore, the tips of the legs of the terminal frame 31 are chamfered 82 to prevent the locking spring 32 from getting caught.
At the front of the center piece of the terminal frame 31, each lead wire 24 pulled out from the modular block 2 is attached to the terminal frame 3.
The terminal frame 31 is press-fitted into the press-fit slit 39 of 1.
A lead wire 24 is connected to the terminal block 2, and each contact pin 23 of the modular block 2 is electrically connected to a corresponding terminal block 3. As shown in FIG. 4, a terminal frame 31 is provided on the rear surface of the body 11.
The leg piece and each independent spring part 32a, 3 of the locking spring 32
A wire insertion port 57 is opened at a position corresponding to the tip of the wire 2b, and a release piece 58 is integrally formed in the body 11 adjacent to the wire insertion port 57. The release piece 58 is formed in a U-shape that opens forward, and the tip of one leg piece is connected to the lock piece 36b on the rear side.
It is separated by a pair of slits 59 extending from the rear side surface to the rear surface of the body 11, and is flexible back and forth with respect to the body 11.

With the above configuration, when connecting the telephone line 5, as shown in FIG.
36b and the leg piece of the terminal frame 31. On the other hand, when disconnecting the telephone line 5, as shown in FIG. 7b, press the release piece 58 forward and release it. By bending the rear lock piece 36b away from the leg of the terminal frame 31 at the tip of one of the legs of the piece 58, the telephone line 5 can be easily removed. At this time, even if the telephone wires 5 are respectively inserted from the two wire insertion ports 57 in one terminal portion, the respective telephone wires 5 are connected to the independent spring portions 32a, 32 of the locking spring 32.
b, and is stably held even if the wire diameter of the telephone line 5 is different.

Further, a door 4 is attached to the plug insertion port 61 to prevent dirt and the like from entering the casing 1 from the plug insertion port 61 when no plug is inserted. As shown in FIGS. 1 and 2, the door 4 is composed of a pair of upper and lower door bodies 41 and 42, and is connected to the front surface of the modular block 2 and the rear surface of the opening periphery of the plug insertion port 61 of the cover 12. installed in the space between. Both door bodies 41 and 42 are mounted between a pair of right and left holding ribs 25 protruding from the front surface of the modular block 2, and are guided by both holding ribs 25 and can freely slide up and down. The lower door body 42 is arranged so that its upper end overlaps the rear of the upper door body 41. The lower door body 42 has an operating piece 43 projecting from the lower end of the front surface at the center in the left-right direction, and the left-right width of the operating piece 43 is equal to the left-right width of the lowermost step of the notch 64 of the plug insertion opening 61. They are set approximately equal. The operating piece 43 is set to protrude slightly from the front surface of the cover 12. In this way, the upper door body 41 closes the upper half of the plug insertion opening 61, and the lower door body 42 closes the lower half of the plug insertion opening 61. In addition,
When the plug insertion opening 61 is closed by the door 4, the upper door body 41 is locked by appropriate locking means such as a locking rib to prevent it from falling downward. With the above configuration, when assembling the door 4, as shown in FIG. After the cover 12 is placed on the body 11, it is only necessary to fit the cover 12 onto the body 11, and the parts can be assembled by stacking them one after another, making it easy to automate the assembly.

When inserting a plug into the plug insertion slot 61 provided with the door 4 as described above, the plug is brought into contact with the lower surface of the operating piece 43 and moved so as to push up the operating piece 43, and the lower door body 42 is pushed up. while inserting the plug into the plug insertion port 61. When the top 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, and the plug insertion slot 6
1 is opened, and the plug can be inserted into the plug insertion port 61. Reversely insert the plug into the plug insertion port 61
When the plug is removed from the plug, both door bodies 41 and 42 fall downward under their own weight, and the plug insertion opening 61 is automatically closed. That is, when inserting a plug, the operation of opening the door 4 and the introduction of the plug into the plug insertion port 61 are performed in a series of operations, and conversely, when the plug is removed, the door 4 is automatically closed. It is.

The telephone modular jack constructed as described above can be attached to a ready-made mounting frame 71 to which a wiring equipment module can be attached, as shown in FIG. The mounting frame 71 is made of synthetic resin and has a size that allows it to hold three wiring device modules vertically side by side. As shown in FIGS. 8 and 9, a pair of locking holes 73 are bored in the left vertical frame 72 of the mounting frame 71 at positions corresponding to the mounting positions of each wiring equipment module, and the right vertical frame 74
A side frame 75 is installed at a distance from the right vertical frame 74 at a position corresponding to the mounting position of each wiring equipment module.
will be provided. A release piece 76 is protruded from the center of each side frame 75, and a holding hole 77 surrounded by the right vertical frame 74, side frame 75, and release piece 76 is formed on both sides of the release piece 76. . However, by inserting the locking claw pieces 62 protruding from the left and right sides of the casing 1 of the telephone modular jack into the locking hole 73 and the holding hole 77, the casing 1 is held in the mounting frame 71. Attach the casing 1 to the mounting frame 71
To remove it, use a jig such as the tip of a screwdriver to press the release piece 76 so as to widen the distance between the right vertical frame 74 and the side frame 75, and the engagement with the locking claw piece 62 will be released. It will be done. At both upper and lower ends of the mounting frame 71, horizontally elongated mounting holes 78 for mounting to a switch box and screw holes 79 for screwing decorative plates (not shown) are formed. A metal mounting frame 71 is also provided, and the metal mounting frame 71 has a locking claw that can be inserted into a locking hole 63 provided in the casing 1 on the inner edge of the opening. The casing 1 is held by plastically deforming a portion of the mounting frame 71 so that the retaining claws are inserted into the retaining holes 63.

(Example 2) In Example 1, the terminal storage section 53 was provided with only one section on the left and right, but in this embodiment, as shown in FIG. 10, the terminal storage section 53 is formed in three sections on each side. , the terminal block 3 is inserted into each terminal housing portion 53 to provide six terminals. The other configurations are the same as in the first embodiment. Also, modular block 2 is 6
Contact pin block 85 with contact pins 23
and a conductive block 8 having six lead wires 24.
6 and a frame 87. The six contact pins 23 and the six lead wires 24 are electrically connected. Each lead wire 24 has a press-fit slit 3
It is connected to the terminal frame 31 of each terminal block 3 by press-fitting into the terminal block 9.

[Effects of the invention] As described above, the present invention provides a telephone modular jack in which the terminal portion is made of a terminal frame made of a conductive material and a spring material, and is connected to the terminal frame by applying a spring force in a direction toward the terminal frame. Since it consists of a locking spring that holds the telephone line in between, it has a quick-connect terminal structure, and unlike conventional terminal screw terminals, the connection state does not depend on the operator, ensuring constant connection reliability. This has the advantage that a telephone line can be connected to the lock spring with a slit, and the lock spring has two independent spring parts separated by a slit.
Even when two telephone wires are inserted and connected to one terminal section, each telephone wire can be held by an independent spring section, and there is an advantage that it can be used without any problem even in specifications such as sending and wiring.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway plan view showing an embodiment of the present invention, Fig. 2 is an exploded perspective view of the same, Fig. 3 is a perspective view of the same in an assembled state, and Fig. 4 is a cross section of the terminal part of the above. Figure 5 is an exploded perspective view of the same terminal block as above;
Fig. 6 is an exploded enlarged perspective view showing the terminal frame and the terminal storage section, Fig. 7 a and b are explanatory diagrams of the operation of the terminal portion of the same as above, Fig. 8 is a front view of the terminal mounted on the mounting frame of the same, FIG. 9 is a perspective view of a mounting frame used in the above, and FIG. 10 is an exploded perspective view of the main parts of another embodiment of the same.
FIG. 11 is a sectional view showing a conventional example, in which 1 is a casing, 2 is a modular block, and 3 is a sectional view of a conventional example.
3 is a terminal block, 31 is a terminal frame, 32 is a locking spring, and 32a and 32b are independent spring parts.

Claims (1)

[Scope of utility model registration request] A telephone comprising a modular block in the casing to which a plug inserted through a plug insertion opening opened on one side of the casing is removably connected, and terminals electrically connected to contact pins of the modular block. In a modular jack, the terminal part consists of a terminal frame made of a conductive material and a locking spring made of a spring material that applies a spring force in the direction of approaching the terminal frame to clamp the telephone line between the terminal frame and the terminal frame. A structure of a terminal part of a telephone modular jack, characterized in that a locking spring has two independent spring parts divided by a slit.