JPS63259982A - Telephone modular jack - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field 1] The present invention relates to a telephone mock error jack in which an insert block having a contact spring that electrically contacts a plug is disposed within a casing.

[Background Art 1] Conventionally, as shown in FIG. 8, this type of telephone monophonic jack has a casing 1 shaped so that it can be attached to a standardized ready-made mounting frame that is attached to an embedded box.
is provided. A plug insertion port 21 is formed on the front surface of the casing 1, into which a plug can be inserted.

In this telephone monolayer jack, as shown in FIG. 9, an insert block 3 is installed in a casing 1, and a lead #11o1 pulled out from the insert block 3 is fixed to a terminal plate 102 by soldering. It has become. In the insert block 3, as shown in FIG. 10, a crimping portion 105 provided at one end of a lead wire 101 is crimped to a contact spring 104 inserted into a molded block body 103.

By the way, the casing 1 is divided into a body and a cover in order to accommodate the insert block 3. Generally, it is possible to engage the body and the cover, but if you try to automate the assembly, However, the cover may tilt, making it difficult to assemble.

[Object of the Invention] The present invention has been made in view of the above points, and its object is to temporarily fix the cover to the body when the cover is engaged with the body. By doing so, it is an object of the present invention to provide a telephone modular shack whose assembly can be easily automated.

[Disclosure of the Invention J (vI) The telephone modular jack according to the present invention includes an insert block in the casing having a contact spring that electrically contacts a plug inserted through a plug insertion opening opened on one side of the casing. In the telephone modular jack, the casing is formed by engaging an engaging piece protruding from either the body or the cover and having seven prongs at the tip into an engaging hole formed in the other,
A part of the engaging piece can be inserted into either the retaining piece or the engaging hole so that the body and the cover are temporarily fixed in a state where the hook does not engage with the engaging hole. When the body and the cover are connected, by temporarily engaging the engaging piece and the engaging hole until the engaging piece and the engaging hole are completely engaged. This prevents the cover from tilting relative to the body.

(Example) In the following explanation, the term "vertical direction" is used based on FIG. However, these terms are used for convenience and do not limit the manner in which they are used.

As shown in Figures 1 to 3, the telephone monologue
The jack includes a casing 1 consisting of a body 10 and a cover 20, an insert block 3, a terminal block 4, a middle frame 5, and a door block 6 housed in the casing.
This is done by rtMt.

The casing 1 is made of an insulating material such as synthetic resin, and has the same mounting dimensions as one module of the wiring equipment so that it can be attached to a standardized ready-made mounting frame that is attached to the embedded box. It is set. body 10
is open at the top, and there are 1 outer flange pieces on each side of the left and right edges of the opening.
1 is extended, and a retaining hole 12 is formed at the tip of each outer flange piece 11, penetrating vertically. On the other hand, cover 2
Both left and right ends of 0 face the outer flange piece 11 of the body 10) HA JPhK victory ÷ 996C cup! Mouth 1 At the tip of the CW92, there is an engagement piece 2 with 7 hooks 23 at the lower end.
4 extends downward, and by engaging the seven hooks 23 of the engagement piece 24 with the engagement hole 12, the body 10 and the cover 20 are connected.
are now combined. The engagement piece 24 is provided with a temporary engagement protrusion 25 that protrudes below the seven hooks 23, and as shown in FIG.
0 and inserting the temporary engagement protrusion 25 into the engagement hole 12, the cover 20 is supplied on the production line, and then the cover 20 is pressed against the body 10 and combined (snap-in). Until then, the position of the cover 20 relative to the body 10 is stabilized, and the cover 20 is prevented from shifting or tilting relative to the body 10. With this configuration, the supply of the cover 20 and the connection to the body 10 can be automated, leading to improved productivity.

Inside the body 10, a pair of left and right partitions 13 divide the interior into three partitions on the left and right.
It is divided into compartments, and each compartment on the left and right sides is further divided into three compartments by partitions 14, thereby forming six terminal storage chambers 15 each large enough to accommodate one terminal block 3. . On the upper surface of the partition plate 13, as shown in FIG. An insertion slot 7) 13b is formed facing the upper edge and opening.

Furthermore, a positioning lip 16 is provided within the section between both partitions 113 to protrude from the inner bottom surface of the body 10. The positioning lip 16 is formed at approximately the center of the body 10 in the left-right direction and at a position offset from the center in the front-rear direction. That is, if the positioning lip 16 is not present, the body 10 is approximately line symmetrical in the front, rear, left, and right directions, but by forming the positioning lip 16, the body 10 becomes asymmetrical in the front and rear directions. This makes it easier to detect. A groove 17 running in the front-rear direction is formed on the lower surface of the body 10 at a portion corresponding to both the partitions 13, and at the center of the bottom surface of the groove 17, as shown in Figures 3 and 4, A wire holding lip 19 having a hook portion 18 projecting left and right at its lower end is protrudingly provided.

A plug insertion opening 21 is opened in the center of the top surface of the cover 20 . A pair of coupling claws 26 is provided protruding from the tips raAi of the left and right outer flange pieces 22 of the cover 20, and a coupling hole 27 is formed at the base of the outer flange piece 22 at a portion corresponding to between the two coupling claws 26. has been done. As shown in FIG. 3, a pair of left and right pressing lips 28 projecting from the lower surface of the cover 20 are provided on the lower surface of the cover 20. As shown in FIG. Furthermore, a pair of left and right guide lips 29 are provided protruding from the lower surface of the opening periphery of the plug insertion port 21 . Holding lips 29a are provided at the lower end of each lip 29 to protrude toward each other and hold the door block 6.

The insert block 3 includes a plurality of contact springs 31 and a lead piece 32 integrally connected to each contact spring 31 by punching an elastic sheet metal, and inserts the lead piece 32 into a block body made of a synthetic resin which is an insulating material. It is formed by inserting it into 33. The block main body 33 has a base 33m that has a pair of legs that are substantially parallel to the partition plate 13 and is formed in a substantially U-shape in a plane perpendicular to the vertical direction, and a center piece of the base 33a that protrudes from the upper surface of the base 33m. It has a protrusion 33b. The contact spring 31 protrudes from the upper surface of the protrusion 33b, is bent downward, and is bent in the front-rear direction. The lead pieces 32 each protrude from the outer surface of each leg piece of the base 33a, and their tips are bent downward to form an abbreviated shape.

A press-contact slit 34 is formed at the lower end of each lead piece 32 and opens toward the lower edge.

The middle frame 5 is fitted into a portion of the insert block 3 corresponding to the protrusion 33b. The middle frame 5 has a vertically penetrating hole 51 that guides the plug, and inside the hole 51 there are comb teeth (to separate the contact springs 31 so that they do not come into contact with each other).
(not shown) is formed. In addition, an engaging leg 52 is provided on the lower surface of the middle frame 5 to be inserted between the legs of the block body, and a pair of protrusions 53 are formed on both left and right sides of the middle frame 5. ke out koji ζ ke t+-WノVri ζ1〉
A fitting groove 54 into which a part of the protruding base 33b of the insert block 3 is inserted is formed at a position where the fitting groove 54 is inserted.

In this way, by fitting the insert block 3 and the middle frame 5, they are positioned.

The terminal block 4 consists of a terminal frame 41 made of a conductive material and formed into a substantially U-shape that opens downward, and a locking spring 42 mounted inside the terminal frame 41. One leg of the terminal frame 41 A slit 43 is formed in one leg, and a locking piece 44 is formed by cutting and raising the other leg in the center. Further, a pressure contact piece 45 is provided on the center piece of the terminal frame 41 and extends toward the leg piece provided with the slit 43. lock spring 4
2 is a pair of locking pieces 46a made by bending an elastic metal plate.
, 46b, each locking piece 46
a and 46b are divided by slits 47a and 47b, respectively. When the lock spring 42 is installed in the terminal frame 41, the base end of the slot 47b engages with the locking piece 44, and the lock spring 42 is held in the terminal frame 41 and becomes a block. ing.

Generally, telephone wires have a wire diameter of 0.4 to 0. l35zz
Therefore, it is necessary to set the contact pressure between the lock piece 46b and the terminal frame 41 so that the telephone line can be inserted at the time of connection, and the contact pressure for the thinnest telephone wire can be ensured. In order to satisfy this condition, the distance between the base piece of the lock spring 42 and the tip of the lock piece 46b is
Set it to be equal to the distance between the two legs of. However, since the terminal frame 41 and the lock spring 42 are made into a block, the lock spring 42 is not deformed when the terminal block 4 is assembled into the body 10, and the quality is stabilized to meet the above conditions. It is possible to do so. Further, the terminal block 4 is arranged in each terminal storage chamber 1 of the body 10.
Two terminal blocks 4 are installed in the terminal block 5 as required, and two terminal blocks 4 are installed in the case of a two-core type, four terminal blocks 4 are installed in a four-core type, and six terminal blocks 4 are installed in a six-core type.

A door block 6 is attached to a portion corresponding to the plug insertion port 21 in order to prevent dirt and the like from entering the thecing 1 from the plug insertion port 21 when no plug is inserted. The door block 6 has an upper door body 61 and a lower door body 62.
The upper door body 61 closes half of the plug insertion port 21, and the lower door body 62 closes the plug insertion port 2.
The remaining half of 1 is occluded. Lower door body 6
2 has an operating piece 63 protruding from it. The protruding dimension of the operation piece 63 is set to such an extent that it protrudes slightly from the front surface of the cover 20. The door block 6 includes the upper surface of the middle frame 5 and the cover 20.
and the lower surface of the opening periphery of the plug insertion opening 21. That is, the door block 6 is installed between a pair of idle ribs 29 protruding from the back surface of the cover 20, and is locked by a retaining lip 29a to prevent it from falling off. With the above configuration, when inserting a plug into the plug insertion port 21, all you have to do is bring the plug into contact with the operating piece 63, push the operating piece 63, and move the door block 6 upward.
Conversely, when the plug is removed from the plug insertion port 21, the door block 6 falls downward under its own weight, and the plug insertion port 21 is automatically closed.

As shown in FIG. 4, a terminal frame 4 is provided on the bottom surface of the body 10.
A pair of wire insertion lowers 1 are provided at corresponding positions between the leg pieces 1 and the tips of the locking pieces 46a and 46b of the lock spring 42, and a release piece 72 is provided adjacent to the wire insertion lowers 1. It is provided. The release piece 72 is formed in a substantially U-shape with a base continuous with the side wall of the body 10, and is vertically flexible. The distal end of the release piece 72 is in contact with the lower surface of the distal end of the lock piece 46b, and when the release piece 72 is pushed upward from the lower surface side of the body 10, the lock piece 46b is bent.

Further, the release piece 72 has a groove 73 formed in a portion exposed on the lower surface of the body 10 into which a jig such as the tip of a driver can be inserted. However, when connecting a telephone line, if the telephone line is inserted into the wire insertion lower 1, the locking pieces 46a, 46
A telephone line is held between the terminal frame 41 and the terminal frame 41, and when removing the telephone line, insert a jig into the groove 73 and press the release piece 72 inward to release the lock spring. 42 can be bent away from the legs of the terminal frame 41, and the telephone line can be easily removed.

In assembling the plug, after the terminal block 4 is placed in the body 10, the insert block 3 with the inner frame 5 attached is attached to the body 10. terminal block 4
is installed so that the pressure contact piece 45 is accommodated within the insertion slit 13b. In addition, when the insert block 3 is fitted with the middle frame 5, the central piece of the block body 33a is sandwiched between the upper end of the positioning lip 16 and the peripheral wall of the body 10, and the position is fixed. It is mounted so that the piece 32 is accommodated within the groove 13a. Therefore, if the insert block 3 is pressed against the body 10 side, the terminal frame 41 is inserted into the pressure welding slit 34 of the lead piece 32.
The pressure contact piece 45 is press-fitted to establish an electrical connection between the lead piece 32 and the terminal block 4. Here, the positioning lip 16 is used not only to fix the insert block 3 but also to determine the direction of the body 10.

With the above configuration, there is no need to wire lead wires as in the conventional case, and assembly automation is facilitated.If the cover 20 is fitted onto the body 10 and the cover 20 is pressed against the body 10, the engagement piece The seven hooks 23 of 24 engage with the engagement holes 12, and the body 10 and the cover 20 are coupled. Here, when the cover 20 is placed on the body 10, the temporary engagement protrusion 25 is inserted into the engagement hole 12 as described above, so the cover 20 is temporarily fixed to the body 10. be. Furthermore, when the cover 20 is pressed against the body 0, as shown in FIG. , a pressing lip 28 formed on the lower surface of the body 10
comes into contact with the upper surface of the terminal frame 41 of the terminal block 6, thereby preventing the terminal block 6 from wobbling.

The telephone monochrome gloss described above can be attached to a standardized ready-made mounting frame that is attached to an embedded box. That is, if the mounting frame is made of synthetic resin, the coupling claws 26 may be engaged with the mounting frame, and if the mounting frame is made of metal, the coupling holes 27 may be engaged with the mounting frame.

The state of connection with the mounting frame is well known in terms of layout #J'aA, so a description thereof will be omitted.

(Example 2) In this example, as shown in FIG. 7, an inclined surface 12a is formed at the upper end of the engagement hole 12 along the lower surface of the seven hooks 23 so as to widen the upper opening width. This is what I did. With this configuration, when the cover is placed on the body 10 with the engagement piece 24 aligned with the engagement hole 12, the 7 pieces 2
3 will be inserted into the engagement hole 2 to some extent, and similarly to the case where the temporary engagement protrusion 25 is provided, - After supplying the cover 20 on the production line, the cover 20 will be inserted into the body 10. Until the cover 20 is pressed against the body 10, the position of the cover 20 relative to the body 10 is stabilized, and tilting of the cover 20 can be prevented.

[Effects of the Invention] As described above, the present invention provides a telephone modular jack in which a casing is provided with an insert block having a contact spring that electrically contacts a plug inserted through a plug insertion opening opened on one side of the casing. In the casing, the casing is formed by engaging an engaging piece protruding from either the body or the cover and having seven prongs at the tip into an engaging hole formed in the other, and the casing is engaged with the engaging piece. On either side of the hole, there is a temporary engagement part that allows a part of the engagement piece to be inserted into the retention hole so that the body and the cover are temporarily fixed while the hook does not engage with the engagement hole. When the body and the cover are connected, the engagement piece and the engagement hole can be temporarily engaged until the engagement piece and the engagement hole are completely engaged. This has the advantage that tilting of the structure is prevented and assembly can be easily automated.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention, FIG. 2 is a partially cutaway plan view of the same, FIG. 3 is a partially cutaway front view of the same, and FIG. 4 is a bottom view of the same, and FIG. 5 is a plan view of the body used in the above, FIG. 6 is a sectional view showing the engagement portion between the engagement piece and the engagement hole in the above, and FIG. 7 is the engagement piece in Example 2 of the present invention. FIG. 8 is a perspective view showing a telephone mono error lock according to the present invention, FIG. 9 is a cross-sectional view showing a conventional example, and FIG. 10 is a conventional insert. It is a sectional view showing a block. 1 is a casing, 3 is an insert block, 10 is a body, 12 is an engagement hole, 12a is an inclined surface, 20 is a cover, 2
1 is a plug insertion port, 23 is a hook, 24 is an engagement piece, 25
3 is a temporary engagement protrusion, and 31 is a contact spring. Agent Patent Attorney Ishi 1) Ai 7, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10

Claims (3)

[Claims] (1) In a telephone modular jack that is equipped with an insert block in the casing that has a contact spring that makes electrical contact with a plug that is inserted through a plug insertion port that is opened on one side of the casing, the casing is either a body or a cover. It is formed by engaging an engagement piece that protrudes from one side and has a hook at its tip with an engagement hole formed on the other side, and either the engagement piece or the engagement hole has a
A temporary engagement part is formed in which a part of the engagement piece can be inserted into the engagement hole so that the body and the cover are temporarily fixed in a state where the hook does not engage with the engagement hole. Telephone modular jack. (2) The temporary engagement portion is a temporary engagement protrusion that is formed on the distal end side of the hook in the engagement piece and can be inserted into the engagement hole. Telephone modular jack. (3) The temporary engagement portion is an inclined surface that widens the opening of the engagement hole so that a part of the hook is inserted into the engagement hole. Telephone modular jack.