JP3319821B2 - 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 modular jack provided with a door for opening and closing a plug insertion opening into which a modular plug is inserted.

[0002]

2. Description of the Related Art Conventionally, there has been known a modular jack as shown in FIG. 5 having a jack block 3 for connecting a modular plug used for a PDS or the like. The case for housing the jack block 3 is formed by joining the cover 2 and the body 1 together. The cover 2 is provided with a protruding base 23 formed so as to protrude toward the front side, and the body 1 is provided with a body main body 15 formed so as to protrude toward the rear side. With the cover 2 and the body 1 fitted together, the jack block 3 is housed in a space surrounded by the protrusion 23 and the body main body 15. In addition, a plug insertion port 21 for inserting a modular plug is opened on the bottom surface of the protrusion 23. The modular plug is inserted into the plug insertion port 21 and inserted into a jack connection part (not shown) of the jack block 3.
At this time, the contacts of the modular plug contact the contact portions of the jack block 3. Further, the slide 23 slides along the plug insertion port 21 on the inner surface side, and
A door 6 for opening and closing is provided. In this modular jack, when the modular plug is not inserted into the plug insertion port 21, the door 6
It is set to close.

[0003]

However, as in the case where a modular jack is provided on the floor, the plug insertion port 2 is not provided.
When the modular jack is installed with the first side facing upward, even if the modular plug is not inserted into the plug insertion port 21, the door 6 cannot close the plug insertion port 21 by its own weight, There is a possibility that foreign matter such as dust may enter the jack connection portion of the modular jack with the plug insertion opening 21 kept open.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a modular jack which can be installed regardless of a mounting position and a mounting direction and in which foreign substances such as dust do not enter the inside of the jack connection portion. It is assumed that.

[0005]

According to the first aspect of the present invention, in order to achieve the above object, a cover having a plug insertion opening for inserting a modular plug is provided on a cover having a front opening.
A case comprising a body to be joined; and a terminal fixed in the case and having a contact portion for contacting a contact of a modular plug inserted into the case through a plug insertion port and electrically connected to the contact portion. and Jack blocks, mosquitoes
A door that opens and closes the plug insertion port slidably along the plug insertion port between the bar and the jack block, and a cover
A spring that is placed on the rear side of both sides of the plug insertion port to bias the door in the direction to close the plug insertion port ,
Locked and fixed to cover to hold spring from behind
And a holding plate .

According to a second aspect of the present invention, in the configuration of the first aspect, the cover is provided with an assembling claw protruding rearward, and the body has a body.
Has an assembly hole that engages with the assembly claw and joins the cover
It is characterized by having been done. According to the third aspect of the present invention, in the configuration of the second aspect, the jack block is provided with a center frame protrusion protruding on both side surfaces thereof and a block receiver protruding toward the body on the inner side surface of the front wall of the cover. The jack block is sandwiched between the body and the cover by the abutment of the middle frame projection and the rear end face of the jack block abutting on the inner peripheral surface of the body.

[0007]

According to the structure of the first aspect, since the door for opening and closing the plug insertion port and the spring for urging the door to close the plug insertion port are provided, the jack plug is inserted into the plug insertion port. If not, the door closes the plug insertion port by the spring force of the spring, and foreign matter such as dust does not enter the jack connection portion of the jack block. In addition, both sides of the door
Locked and fixed to cover to hold spring from behind
With the holding plate
Assemble the door, spring, and holding plate sequentially from the same direction
Door and spring and push against the cover.
Even the work of assembling with the plate becomes easy.

According to the second aspect of the present invention, the cover is located at the rear.
The assembly claws protrude from the
Since the assembling holes for connecting the bars are formed , the cover and the body can be easily joined by simply inserting the assembling claws into the assembling holes. According to the third aspect of the present invention, since the jack block is sandwiched between the body and the cover with the middle frame projection provided on the side surface of the jack block mounted on the block receiver, the jack block is formed between the body and the cover. As a matter of course, a space for accommodating the door is secured between the surface of the cover where the plug insertion opening is formed and the jack block, and the door can be moved smoothly.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, the modular jack shown in this embodiment has a case for accommodating a jack block 3 into which a modular plug is inserted. The case is formed by combining a body 1 having a front opening and a cover 2 fitted on the front side of the body 1. Flanges 11 protrude from both side edges of the body 1. The flange 11 is provided with an assembly hole 12. On the other hand, the cover 2 is formed with assembly claws 22 projecting from both side edges and inserted into the assembly holes 12 as shown in FIG. As shown in FIG.
2 is fixed to the periphery of the assembly hole 12 so that the body 1
And the cover 2 are joined.

A body 1 is formed on the body 1 behind the flanges 11 and protrudes rearward only in the upper half of FIG. 1. The lower surface of the body 15 and the rear surface of the lower half of the body 1 have both surfaces. Is formed so as to extend over the corner formed by. On the inner peripheral surface of the opening of the wiring port 14 on the body main body 15 side, two terminal cover receivers 17 are cut out at upper and lower positions. A pressing piece 16 protrudes toward the wiring port 14 along the rear surface of the body 15, and a pressing projection 16 a protruding from the wiring port 14 protrudes from the tip of the pressing piece 16.

A cover 23 is provided at the center on the front side of the cover 2.
Are formed. A plug insertion opening 21 for inserting a modular plug is opened at the center of the bottom surface of the protruding base 23.
On the inner surface side of the protrusion 23 around the plug insertion port 21,
An upper door guide 25 as shown in FIG. 3B is formed. Further, two crimping portions 26 as shown in FIG. 3A are protrudingly provided at both ends of the insertion opening 21 on the inner surface of the protruding base 23. Between the crimping portion 26 and the insertion port 21, a block receiver 27 is provided at the upper part of FIG. Further, a pair of coupling claws 24 is provided on both outer edges of the cover 2 so as to protrude. The coupling claw 24 is set to a size corresponding to the mounting frame 10 as shown in FIG.

A door 6 is provided at the plug insertion opening 21 along the inner surface of the cover 1. The door 6 includes an upper door 61 and a lower door 71 each formed in a plate shape. A pair of upper door projections 62 are provided at both upper ends on the rear surface side of the upper door 61 so as to project therefrom. The lower door 71 has an operation piece 75 protruding from a front side of a plate-shaped lower door main body 72. Further, spring receivers 73 are provided on both sides of the lower door main body 72 so as to protrude along the both side surfaces of the lower door main body 72. Further, a lower door projection 74 is integrally provided on the rear surface of the spring receiver 73. On the inner side surface of the abutment 23, an upper door 61 is stored on the front side, and a lower door 71 is stored on the rear side. The upper door 61 slides along the upper door guide 25. Both end surfaces of the spring receiver 73 of the lower door 72 abut on the inner surface of the protruding base 23, and the lower door 72 slides along the plug insertion port 21.

The spring receiver 73 is inserted into one end of a spring 8 composed of a coil spring. Since the other end of the spring 8 is inserted between the block receiver 27 and the inner peripheral surface of the protruding base 23, the movement of the spring 8 in the left-right direction is prohibited. further,
A holding plate 9 for locking the spring 8 from above in FIG. 1 is provided. The holding plate 9 is provided with two mounting holes 91 at both ends thereof.
Is inserted and the tip of the crimping portion 26 protruding from the mounting hole 91 is heat-welded to fix the holding plate 9 and the cover 2 together. In this state, since the spring 8 is pressed by the pressing plate 9, the vertical movement in FIG. 1 is prohibited. At this time, since the spring receiver 73 is also locked by the holding plate 9, the vertical movement is prohibited. Furthermore, since the upper door 61 is provided below the lower door 72, vertical movement is prohibited.

The modular plug inserted through the plug insertion port 21 is connected to the jack block 3. The jack block 3 is formed by connecting the jack body 32 and the middle frame 40. A guide hole (not shown) in which a contact portion (not shown) for contacting a contact (not shown) of the modular plug when the modular plug is inserted is formed in the middle frame 40. A pair of middle frame projections 41 project from both outer surfaces of the middle frame 40. On the outer surface of the jack body 32, eight slits 34 are formed in two rows of four vertically. An end of an external electric wire (not shown) is introduced into the slit 34. A press contact terminal formed at one end of the conductive member is provided in the slit 34, and the other end of the conductive member is electrically connected to the above-described contact.
A terminal cover 5 is detachably attached to a portion of the jack plug 3 connected to an external electric wire. The terminal cover 5
A terminal cover base 50 is provided.
, A pair of upper and lower terminal cover stoppers 51 are protrudingly provided. The terminal cover 5 is coupled to the jack block 34 with the terminal cover stopper 51 inserted into the slit 34. Further, terminal cover hooks 52 are protruded from both ends of the terminal cover 5.

The modular jack is assembled as follows. First, the door 6 is stored in the cover 2 so that the plug insertion opening 21 faces down. A spring 8 is mounted on the lower door 71, and the spring 8 is fixed to the cover 2 by a holding plate 9. Next, cover the jack block 3 with the cover 2
When the body 1 is finally connected to the cover 2, the assembly is completed. Here, since the middle frame projection 41 is placed on the block receiver 27 of the cover 2 and the rear end surface of the jack block 3 abuts on the rear wall of the body 1, the jack block 3 is sandwiched between the cover 2 and the body 1. Will be. Further, since the holding projection 16a is engaged with the block stopper 35 of the jack block 3, the jack block 3
The fixing strength to the body 1 is increased. Further, since the jack block 3 is placed on the block receiver 27, a space for accommodating the door 6 can be secured between the jack block 3 and the plug insertion port 21. By assembling the door 6, the spring 8, the holding plate 9, the jack block 3, and the body 1 to the cover 2 in this order from the same direction, the modular jack can be easily assembled.

When the modular plug is inserted from the plug insertion port 21, the operation piece 75 provided on the lower door 71 is moved toward the upper door 61 by the modular plug to open the plug insertion port 21. At this time, the upper door projection 62 of the upper door 61 is pushed by the lower door 71, so that the upper door 6
1 moves together with the lower door 71, and the plug insertion opening 21 is opened. When the modular plug is pulled out from the plug insertion port 21, the lower door 71 is pushed in a direction to close the plug insertion port 21 by the spring force of the spring 8, and the lower door 62 closes half of the plug insertion port 21. Here, the lower door 71 pulls the upper door 61 by an engaging portion (not shown), and the upper door 61 is interlocked with the lower door 62 to close the plug insertion opening 21. Therefore, when the jack plug is not inserted into the plug insertion slot 21, no matter what direction or direction the modular jack is installed, the upper door 6 is not affected by the spring force of the spring 8.
Since the first and lower doors 71 close the plug insertion opening 21, foreign matter such as dust does not enter the jack connection portion of the jack block 3.

The above-described modular jack is connected to a standardized mounting frame 10 as shown in FIG. This mounting frame 10 is for a large-sized three rectangular type that is standardized for an embedded wiring device that is mounted in a form embedded in a mounting surface using a switch box in accordance with JIS standards and standards of the Japan Wiring Equipment Manufacturers Association. Things. In other words, this case has the same shape and size as the unit size of the wiring device that can be attached to the standardized mounting frame. This mounting frame 10 is
The connecting claws 2 are provided on both sides 95a and 95b surrounding the opening window 96.
4 has a holding hole 97 to be engaged, and a bending piece 94 that can be bent so as to change a distance from the other side piece 95b is formed in one side piece 95a. When attaching the case to the mounting frame 10, if the case is pressed from the rear of the mounting frame 10, the bending piece 94 bends and the case can be fitted to the mounting frame 10. Protrude. On the other hand, in order to remove the case from the mounting frame 10, the bending piece 94 may be pryed with a driver or the like. Opening window 9
6 and connecting pieces 93a, orthogonal to the side pieces 95a, 95b.
93b is provided with a long hole 92 for inserting a box screw for coupling the mounting frame 10 to the switch box, a screw hole 90 for screwing a plate screw 98 for mounting a decorative plate 99 covering the front surface of the mounting frame 10, and the like. . The illustrated mounting frame is a mounting frame 10 made of a synthetic resin. However, in the case of a metal mounting frame, the mounting frame 10 can be connected to the mounting frame 10 by using a connecting hole 28 opened on the side surface of the pedestal 23 of the cover 2. Good. A window hole 89 for exposing the projecting base 23 and an insertion hole 88 for inserting a plate screw 98 are formed in the decorative plate 99.

[0018]

According to the first aspect of the present invention, since a door for opening and closing the plug insertion port and a spring for urging the door in a direction to close the plug insertion port are provided, the jack plug is inserted into the plug insertion port. If not, the door closes the plug insertion port by the spring force of the spring, and foreign matter such as dust does not enter the jack connection portion of the jack block. In addition, both sides of the door
Locked and fixed to cover to hold spring from behind
With the holding plate
Assemble the door, spring, and holding plate sequentially from the same direction
Door and spring and push against the cover.
Even the work of assembling with the plate becomes easy.

According to the second aspect of the present invention, the cover is provided at the rear.
The assembly claws protrude from the
Since the assembling holes for connecting the bars are formed, there is an advantage that the cover and the body can be easily joined by an operation of merely inserting the assembling claws into the assembling holes. Claim 3
According to the configuration described, since the clamping jack block between the body and the cover in a form loaded into receiving block middle frame projection provided on a side surface of the jack block, Jack
Not only is the block positioned by the body and the cover, but also the door can be moved smoothly by securing a space for accommodating the door between the jack block and the surface where the plug insertion port is formed in the cover. It has the advantage of being able to.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing attachment to an attachment frame according to the embodiment.

FIG. 3A is a front rear view of a main part of the embodiment.
(B) is a partially cutaway bottom view of the side surface of the main part of the embodiment.

FIG. 4A is a cross-sectional view showing a finished product after assembly according to the embodiment. (B) is a longitudinal sectional view showing a finished product after assembly in the example.

FIG. 5 is an exploded perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Cover 3 Jack block 6 Door 8 Spring 12 Assembly hole 16a Holding projection 21 Plug insertion port 22 Assembly claw 27 Block receiver 35 Block stopper 41 Medium frame projection

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-58475 (JP, A) JP-A-5-13124 (JP, A) JP-A-3-53768 (JP, U) JP-A-63 164176 (JP, U) Japanese Utility Model 62-191181 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 13/514 H01R 13/52 302 H01R 23/02 H01R 13/516 H01R 13/33

Claims (3)

(57) [Claims] 1. A cover in which a plug insertion opening for inserting a modular plug is opened in the front and a body to be connected to the cover.
And Ranaru case, the jack block and having a contact portion and a terminal which is electrically connected has a contact portion that contacts the inserted modular plug contacts into the case through a fixed plug insert opening into the casing A door that opens and closes the plug insertion port slidably along the plug insertion port between the cover and the jack block, and a plug insertion port in the cover
A spring that is located on the rear side of both sides of the door and urges the door in the direction to close the plug insertion port, locks both sides of the door and releases the spring
A modular jack comprising: a pressing plate fixed to a cover so as to press from the side . 2. The cover has an assembly claw projecting rearward,
Assembling the cover by engaging the assembly claws with the body
The modular jack according to claim 1, wherein a hole is formed . 3. A middle frame projection is provided on both sides of the jack block, and the middle frame projection abuts on a block receiver projecting toward the body on the inner surface of the front wall of the cover.
3. The modular jack according to claim 2, wherein the jack block is sandwiched between the body and the cover by the rear end surface of the jack block abutting on the inner peripheral surface of the body.