JPH0770332B2 - Exposed Modular Jack - Google Patents

Description

Detailed Description of the Invention

[Industrial applications]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exposed modular jack that is mounted on a surface of a mounting surface such as a wall surface so as to project.

[Prior art]

Conventionally, as a modular jack, there has been provided an exposed modular jack which is attached by abutting on a mounting surface such as a wall surface. In this type of exposed type modular jack, the plug insertion port into which the modular jack is inserted is opened on the bottom surface of the base attached to the mounting surface, and the modular jack inserted in the plug insertion port is mounted on the base. It is designed to be connected to an insert block.

[Problems to be Solved by the Invention]

By the way, in this type of modular jack, it is possible to prevent foreign matter such as dust from entering by closing the plug insertion opening with a door when not in use. However, in the above-described exposed type modular jack, the plug insertion port is formed on the lower surface of the base, and the exposed type modular jack is usually mounted at a position lower than the eye level, so it is difficult to visually recognize the position of the plug insertion port. It is difficult and it is difficult to insert the modular plug when using. An object of the present invention is to solve the above-mentioned problems, and the position of the plug insertion port can be easily known, the door body for opening and closing the plug insertion port can be easily operated, and the modular plug is easily connected. It is intended to provide a modular jack.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the invention of claim 1 comprises a base fitted in contact with a mounting surface such as a wall surface and a cover fitted on the front surface of the base, and a plug insertion opening to the lower surface of the base. In an exposed modular jack that connects a modular plug inserted from the mouth to an insert block attached to the base, the plug insertion opening slides in the front-back direction of the base along the opening surface of the plug insertion opening. Is provided with a door body that closes the plug insertion opening when the plug is moved to, and the operation piece projects downward from the front end edge of the door body, and corresponds to the front end of the plug insertion opening on the front surface of the base and cover. Is formed with an exposure notch for exposing the operation piece to the front side when the door body closes the plug insertion opening.

[Action]

According to the above configuration, a door body is provided which is moved in the front-rear direction and closes the plug insertion opening when it is moved in the front direction, and the operation piece is projected downward on the front end edge of the door body. And a front notch for exposing the operation piece to the front side when the door closes the plug insertion opening at a portion corresponding to the front end of the plug insertion opening on the front surface of the base and the cover. Therefore, even if the base is attached to a place lower than the eye level, the operation piece can be seen from diagonally above through the exposure notch with the door closed.
The open / closed state of the door can be easily known. Moreover, since the operation piece is provided on the front edge of the door body, when inserting the modular plug from the closed state of the door body, the door body is opened by moving the modular plug backward while applying the modular plug to the operation piece. The plug insertion opening can be opened by inserting the modular plug into the plug insertion opening, and the modular plug can be easily inserted into the plug insertion opening.

【Example】

The overall structure is shown in FIGS. On the rear surface side of the base 1 made of synthetic resin, an insert block 2, a plurality of (6
Terminal block 3 and door block 4 are assembled,
A cover 5 is fitted on the front side of the base 1, and a back cover 6 is attached on the back side of the base 1. On the base 1, a peripheral wall 10 is formed over substantially the entire periphery of the rear surface, and three projecting portions 11a, 11b, 11c are provided on the front surface in a protruding manner. The inner spaces of the protrusions 11a, 11b, 11c are open to the rear surface side of the base 1, and the opening surfaces corresponding to the protrusions 11b, 11c are located rearward of the opening surfaces corresponding to the protrusions 11a. There is.
The internal space of the protrusion 11a forms a jack storage chamber 12 in which a part of the insert block 2 and the door block 4 are stored. The inner space of each protrusion 11b, 11c is a partition wall 1
It is divided into three terminal storage chambers 13 by 4, and the terminal blocks 3 are installed in each terminal storage chamber 13. A magnet mounting portion 15 is formed on a portion of the back surface of the base 1 surrounded by the peripheral wall 10 different from the jack storage chamber 12 and the terminal storage chamber 13. The magnet mounting portion 15 has a structure shown in FIGS.
As shown in the figure, the wire drawing holes that penetrate the front and back of the base 1
16 is perforated, and a wire drawing notch 17 is formed in the peripheral wall 10 near the wire drawing hole 16. A mounting cylinder 18 is provided so as to project from the center of the rear surface of the base 1. As shown in FIGS. 8 to 14, the insert block 2 includes a base 20 having a support base 20b and a guide base 20c projecting from the end of a plate-shaped base 20a. Three connecting pieces 21 are provided on both side surfaces of the base plate portion 20a, and six contact springs 22 are provided on one surface of the supporting base portion 20b. That is, in the insert block 2, as shown in FIG. 11, a member in which a connecting piece 21 and a contact spring 22 are integrally formed of a conductive spring material is integrally molded with a base 20 made of synthetic resin. Formed. The connecting piece 21 is shown in FIGS.
As shown in the drawing, it is bent into a substantially L shape, and as shown in FIG. 12, a pressure contact slit 21a is formed in the vertical piece so as to open toward the tip edge. The contact spring 22 projects from the front end surface of the support base 20b, and is raised along the front end surface of the support base 20b as shown in FIG. 10 and then bent toward the guide base 20c. have. The guide base portion 20c includes a plurality of grooves 23 into which the tips of the contact springs 22 are inserted. As described above, since the guide base 20c having the groove 23 for positioning the tip of the contact spring 22 is formed integrally with the support base 20b from which the contact spring 22 is drawn out, the manufacture of the insert block 2 is performed. Sometimes the tip of the contact spring 22
If the insert block 2 is inserted into the base 1, the contact spring 22 can be positioned only by the insert block 2, and the contact spring 22 can be prevented from being deformed when the insert block 2 is mounted on the base 1. Each contact spring 22 contacts the contact of the modular plug. For example, when the modular plug is inserted from below in FIG. 10, the tip of the contact spring 22 is inserted into the groove 23 of the guide base 20c. In this state, it bends to the right in FIG. A through hole 24 through which the above-mentioned mounting cylinder 18 is inserted is bored in the central portion of the substrate portion 20a. As shown in FIG. 1, each terminal block 3 includes a terminal plate 30 formed in a substantially U shape, and a pair of locking springs 31 arranged inside the terminal plate 30. One leg of the terminal plate 30 is divided into two to form a pair of contact pieces 30a, and the lock springs 31 correspond to the respective contact pieces 30a. The locking spring 31 includes a locking piece 31a having a spring force toward the contact piece 30a and a pressing piece 31.
b and, the electric wire to be inserted into the terminal plate 30 is clamped between the locking piece 31a and the pressing piece 31b and the contact piece 30a of the terminal plate 30,
The locking piece 31a is made to bite into the electric wire to prevent the electric wire from coming off. On the center piece of the terminal plate 30, a connecting projection 32 is provided between the pair of contact pieces 30a. The connecting protrusion 32 is formed on the same plane as the central piece of the terminal board 30. The terminal block 3 is installed in the six terminal storage chambers 13 formed in the base 1 with the central piece of the terminal plate 30 facing the opening side of the terminal storage chamber 13. As shown in FIG. 7, release pieces 33 are formed on the peripheral walls of the protrusions 11b and 11c corresponding to the respective terminal storage chambers 13. The release piece 33 is formed in a substantially J shape, one end of which is coupled to the base 1 and the other end of which is a locking piece 31a.
Abut. In addition, on the tip surfaces of the protrusions 11b and 11c, the second
As shown in the figure, each pair of electric wire insertion holes 34 corresponding to each terminal storage chamber 13 is opened, and when the electric wire is inserted through the electric wire insertion hole 34, the locking piece 31a and the pressing piece 31b and the contact piece 30a. An electric wire is sandwiched between them. Further, when the electric wire is removed, the releasing piece 33 may be operated to pull out the locking piece 31a in a bent state. By the way, since the protrusions 11b and 11c are formed on the left and right sides of the base 1, three terminal storage chambers 13 are arranged on the left and right sides of the base 1. As shown in FIG. 1, a notch groove 35 into which the connecting projection 32 is inserted is formed in a portion of the opening edge of the terminal housing chamber 13 that faces the left and right center lines of the base 1. When the terminal block 3 is installed in the terminal storage chamber 13, the connecting projection 32 projects through the notch groove 35 to the center of the base 1. When the insert block 2 is attached to the base 1 in this state, the connecting projection 32 is press-fitted into the press-contact slit 21a of the connecting piece 21, so that the terminal block 3 and the insert block 2 are sequentially assembled to the base 1. Only by this, the insert block 2 and the terminal block 3 are electrically connected without using solder or the like. As shown in FIGS. 1 and 5, the door block 4 is provided with a pair of door bodies 40, 41 and a pair of return springs 42 composed of coil springs for biasing the one door body 40. A plug insertion port 19 for introducing a modular plug into the jack storage chamber 12 is opened on the peripheral wall of the protrusion 11a, and the door block 4 is installed in the jack storage chamber 12 so that the plug insertion port 19 can be opened and closed. Is done. The plug insertion port 19 opens on the lower surface (lower surface in FIG. 5) when the base 1 is attached to a mounting surface such as a wall surface, and is continuous with the plug insertion port 19 and the lower end of the front surface of the protruding portion 11a of the base 1 An exposure notch 19a is formed in the portion. The door 40 has a plug insertion opening 19 from the front edge of the base 1.
Has a manipulating piece 40a projecting downwards through, and a hooking protrusion 40b hooked on the door 41 on the lower surface of the rear end of the base 1.
Further, a spring receiving piece 40c is projected from the left and right side edges of a portion of the door body 40 corresponding to the operation piece 40a. The door body 41 is arranged on the lower surface side of the door body 40 and has a hooking protrusion.
40b is hooked on the upper surface of the door body 41 so as to be slidable back and forth. One end of the return spring 42 comes into contact with a back cover 6 which will be described later fixed to the back surface of the base 1, and the other end thereof comes into contact with the spring receiving piece 40c as shown in FIG. Therefore, the door 40 is biased forward by the return spring 42. The door body 41 moves forward together with the door body 40 when the hooking protrusion 40b is hooked on the front end portion of the door body 41. As a result, when no external force is applied to the operation piece 40a, the door body 41 moves forward as the door body 40 moves forward, closing the plug insertion port 19. Since the return springs 42 are used to urge the door bodies 40 and 41 in this manner, the door bodies 40 and 41 can be closed regardless of the direction in which the base 1 is attached. The plug insertion port 19 can be reliably closed by the spring force. Also, with the plug insertion port 19 closed, the front surface of the operation piece 40a is notched for exposure 1
Exposed from 9a. When inserting the modular plug,
When the operation piece 40a is pressed against the spring force of the return spring 42, the door body 40 is opened, and the door piece 41 is also opened by being pushed by the operation piece 40a. Here, as apparent from FIG. 15, the operation piece
The width of 40a in the left-right direction is formed to be substantially equal to the width of the plug insertion port 19. As described above, the base 1, the insert block 2,
A back cover 6 is fixed to the rear surface of the base 1 with the terminal block 3 and the door block 4 attached. The back cover 6 is the base 1
It is arranged so as to cover a portion inside the peripheral wall 10 except the magnet mounting portion 15. A heat-wearing protrusion 61 is provided on the rear surface of the base 1, and the heat-wearing protrusion 61 is inserted into a fixing hole 62 provided in the back cover 6, and then the heat-wearing protrusion 61 is crushed by heat so that the back cover 6 is removed. It is fixed to. On the back cover 6,
As shown in FIG. 5, when attached to the base 1, a pressing piece 63 is formed which is arranged along the tip surface of the support base 20b of the insert block 2, and the back cover 6 is attached to the base 1. By doing so, the contact spring 22 is sandwiched between the support base 20b and the pressing piece 63. Generally, even if the contact spring 22 protruding from the support base portion 20b is bent along the tip surface of the support base portion 20b, springback occurs in the contact spring 22. Although the position cannot be determined, the position of the contact spring 22 can be stabilized by bringing the contact spring 22 into close contact with the support base 20b by the pressing piece 63. A through hole 64 into which the mounting cylinder 18 provided in the base 1 is inserted is formed in the central portion of the back cover 6. The front surface of the base 1 is covered with a cover 5, and the cover 5 includes a peripheral wall 50 that covers the peripheral wall 10 of the base 1. A pressure contact protrusion 51 is formed on the inner surface of the peripheral wall 50 to press against the peripheral wall 10 of the base 1 so that the cover 5 does not fall off when the cover 5 is fitted into the base 1. An electric wire drawing hole is provided in a portion of the peripheral wall 50 corresponding to the electric wire drawing notch 17 of the base 1.
52 is perforated, and a cutout window 53 is formed at a portion corresponding to the plug insertion port 19. Further, the cover 5 is also provided with an exposure notch 53a at a portion corresponding to the exposure notch 19a. Therefore, if the door block 4 closes the plug insertion port 19 with the cover 5 attached to the base 1,
Since the operation piece 40a can be visually recognized through the exposure notch 53a, the state of the door block 4 can be confirmed from diagonally above although the door block 4 is provided on the lower surface side of the base 1. is there. In addition, when inserting the modular plug, you can check the position of the plug insertion port 19, and if you push it backward while applying the modular plug to the operation piece 40a, it will be guided to the plug insertion port 19 and the insertion operation is easy. It can be If the color of the operation piece 40a is colored differently from the color of the cover 5, the visual recognition becomes easier. A screw holding portion 54 having a plurality of protrusions is formed on a portion of the inner peripheral surface of the cover 5 which does not overlap with the protruding portions 11a to 11c of the base 1, and the mounting cylinder 18 is provided.
A mounting screw 55 that is screwed into the wall surface or the like is retained (see FIG. 16). Since the mounting screw 55 is temporarily held by the cover 5 in this way, there is no risk of losing the mounting screw 5, and the mounting screw 55 does not become a hindrance when attaching the magnet to the magnet mounting portion 15. is there.

【The invention's effect】

As described above, the invention of claim 1 is provided with a door body that moves in the front-back direction and closes the plug insertion opening when moving in the front direction, and the operation piece is provided downward at the front end edge of the door body. For exposure, which is protruding and exposes the operation piece to the front side when the door closes the plug insertion opening at the site corresponding to the front end of the plug insertion opening on the front surface of the base and cover. Since the notch is formed, even if the base is installed at a place lower than the eye level, the operation piece can be seen from diagonally above through the exposure notch when the door is closed, opening and closing the door. It has an advantage that the state can be easily known. Moreover, since the operation piece is provided on the front edge of the door body, when inserting the modular plug from the state where the door body is closed, open the door body by moving the modular plug backward while applying the modular plug. The plug insertion opening can be opened by inserting the modular plug into the plug insertion opening, and the modular plug can be easily inserted into the plug insertion opening.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is a front view with the same cover removed, FIG. 3 is a front view of the same, and FIG. 4 is a partially cutaway rear view of the same. 5 is a sectional view of the above,
FIG. 6 is a bottom view of the same as above, FIG. 7 is a sectional view of an essential part of the same as above, FIG. 8 is a perspective view of an insert block used in the same as above, and FIG.
Figures 14 to 14 are front views, sectional views, rear views, side views, and bottom views showing insert blocks used in the same as above.
FIG. 15 is a partially cutaway plan view, FIG. 15 is a bottom view showing the relationship between the door body and the return spring in the above, and FIG. 16 is a rear view of the main part of the cover used in the same. 1 ... Base, 2 ... Insert block, 3 ... Terminal block, 4 ... Door block, 5 ... Cover, 15 ... Magnet mounting part, 19 ... Plug insertion port, 19a ... Exposure notch, 20 ...... Base, 21 ...... Connection piece, 21a ...... Pressure contact slit, 22 ...... Contact spring, 32 ...... Connection projection piece, 40 ...... Door body, 40
a …… Operation piece, 42 …… Return spring, 54 …… Screw holder, 55
...... Mounting screw.

Claims (1)

[Claims] 1. A modular plug which is equipped with a base attached to a mounting surface such as a wall surface and a cover fitted to the front surface of the base, and a modular plug inserted through a plug insertion opening opened on the lower surface of the base. In an exposed modular jack that is connected to an installed insert block, the plug insertion opening slides in the front-back direction of the base along the opening surface of the plug insertion opening and closes the plug insertion opening when moving forward. The door body is provided with an operation piece protruding downward from the front end edge of the door body, and the door body closes the plug insertion opening at a portion corresponding to the front end of the plug insertion opening on the front surface of the base and the cover. An exposure type modular jack, wherein an exposure notch for exposing the operation piece to the front side is formed when the exposure type modular jack is formed.