JPH0458475A - Exposure type modular jack - Google Patents

Abstract

PURPOSE:To reduce assembling man-hours by performing the electrical connec tion between a contact spring and a terminal block concurrently with the assem bling of an insert block and the terminal block into a base. CONSTITUTION:Notch grooves 35 inserted with connecting protruded pieces 32 are formed at the portions faced to a center line on the right and left of a base 1 on the opening edge of a terminal storage chamber 13. When a termi nal block 3 is inserted into the storage chamber 13, the connecting protruded pieces 32 are protruded to the center section through the notch grooves 35. When an insert block 2 is fitted to a base 1, the connecting protruded pieces 32 is pressed into pressing slits 21a of connecting pieces 21, and the insert block 2 and the terminal block 3 can electrically be connected without using solder only by assembling the terminal block 3 and the insert block 2 to the base 1 in sequence.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an exposed modular jack that is attached to a mounting surface such as a wall so as to protrude from the surface of the mounting surface.

[Conventional technology]

2. Description of the Related Art Conventionally, as a modular jack, there has been provided an exposed modular jack that is mounted in contact with a mounting surface such as a wall surface. In this type of exposed modular jack, the plug insertion opening into which the modular jack is inserted is open on the bottom surface of the base that is attached to the mounting surface, and the modular jack inserted into the plug insertion opening is attached to the base. It is designed to be connected to the inserted insert block. The insert block includes a contact spring connected to the modular plug, and a lead wire drawn out from the insert block is electrically connected to the contact spring. Also,
A terminal block is mounted on the base to connect the external @ wire to the contact spring of the insert block. The lead wire is connected to the terminal block by being soldered to the terminal block or press-fitted into a pressure contact terminal provided integrally with the terminal block.

[Problem to be solved by the invention]

In the above configuration, the contact spring of the insert block and the terminal block are connected via the lead wire.
There is a problem that the process of electrically connecting the insert block and the terminal block and the process of assembling the insert block and the terminal block to the base are separate processes, resulting in a large number of assembly steps. The present invention aims to solve the above problems, and reduces the number of assembly steps by electrically connecting the contact spring and the terminal block at the same time as the insert block and the terminal block are assembled to the base. The purpose of this project is to provide an exposed modular jack.

[Means to solve the problem]

In order to achieve the above object, the structure of claim 1 is provided with a base that is attached in contact with a mounting surface such as a wall surface, and a modular plug that is inserted from a plug insertion opening opened on the lower surface of the base. In an exposed modular jack that connects to an installed insert block, the insert block has a connection consisting of multiple contact springs that are electrically connected to the modular plug and a sheet metal electrically connected to the contact springs. The contact spring and the connecting piece are formed by a base made of an insulating material from which the contact spring and the connecting piece protrude from key points. A connecting protrusion protruding from the terminal block to which the terminal block is connected along the rear surface of the base is press-fitted into the press-fitting slit of the connecting piece. In the structure of claim 2, a door block is disposed in the plug insertion port, and the door block includes a door body that slides along the opening surface of the plug insertion port, and a door body that urges the door body in a direction to close the plug insertion port. It is equipped with a return spring. In the structure of claim 3, in addition to the structure of claim 2, the door body is arranged to slide in the front-rear direction of the base and close the plug insertion opening when moving forward, and the front edge of the door body An operating piece projects downward from the base, and an exposure notch is formed at the front edge of the plug insertion opening to expose the operating piece to the front side of the base. In the configuration of claim 4, a cover is detachably attached to the front side of the base, and a magnet attachment part is provided at a key point on the rear side of the base to attach a magnet to the base when the base is attached to the attachment surface by a magnet. A screw holding portion is formed at a key point on the cover corresponding to the magnet mounting portion, and the mounting screw for attaching the base to the wall surface is temporarily held in the screw holding portion.

[Effect]

According to the structure of claim 1, the insert block is provided with a connection piece made of a sheet metal electrically connected to the contact spring, and the connection piece is provided with a press-fitting slit that opens as desired at the tip edge, and is mounted on the base. The connection protrusion protruding along the rear surface of the base from the terminal block to which the external electric wire is connected is press-fitted into the pressure welding slit of the connection piece.
When assembling the insert block and terminal block to the base, the connecting protrusion can be press-fitted into the pressure welding slit, and the assembling of the insert block and terminal block and electrical connection can be done at the same time, resulting in This reduces assembly man-hours. According to the second aspect of the present invention, the return spring urges the door body that slides along the opening surface of the plug insertion port in a direction to close the plug insertion port, so that the door body can be moved regardless of the installation direction. Since it can be closed reliably and is prevented from being left half-open, it is possible to reliably prevent dirt from entering. In the structure of claim 3, the door body is slid in the front-rear direction of the base and is arranged so as to close the plug insertion port when moving forward, and the front edge of the plug insertion port is provided with the door body closer to the front edge of the door body. An exposure notch is formed to expose the downwardly protruding operating piece on the front side of the base, so when the door body is closed, the operating piece can be viewed diagonally from above through the exposing notch, and the door This makes it easy to know whether the body is open or closed. According to the structure of claim 4, the magnet attachment portion is formed at a key location on the rear surface of the base, and the screw holding portion is formed at a key location corresponding to the magnet attachment portion in the cover that is removably fitted on the front surface of the base. However, since the mounting screws for attaching the base to the wall are temporarily held in the screw holder, it is possible to prevent the mounting screws from being lost.Furthermore, when installing the magnet, the mounting screws can be removed by removing the cover. It doesn't become.

【Example】

The overall structure is shown in FIGS. 1 to 7. On the rear side of the base 1 made of synthetic resin, a plurality of insert blocks 2 (6
) terminal block 3 and door block 4 are assembled,
A cover 5 is fitted onto the front side of the base 1, and a back cover 6 is attached to the back side of the base 1. The base 1 has peripheral walls 10 arranged around the entire circumference of the rear surface.
is formed, and three projecting base portions 11a are formed on the front surface. 11b and llc are provided protrudingly. Each protrusion part 11a, 1
The internal spaces of l b and 11 c open on the rear surface side of the base 1, and the opening surfaces corresponding to the protruding portions 11b and llc are located further back than the opening surface corresponding to the protruding portion 11a. The internal space of the protrusion portion 11a forms a jack storage chamber 12 in which a part of the insert block 2 and the door block 4 are stored. The internal space of each protrusion 11b, 11c is divided into three terminal storage chambers 13 by a partition wall 14, and a terminal block 3 is stored in each terminal storage chamber 13. A magnet mounting portion 15 is formed at a portion of the back surface of the base 1 surrounded by the peripheral wall 10 that is different from the jack storage chamber 12 and the terminal storage chamber 13. As shown in FIGS. 2 and 4, the magnet mounting portion 15 is provided with a wire ejection hole 16 that penetrates the front and back sides of the base 1, and a wire ejection hole 16 is provided in the vicinity of the wire ejection hole 16 in the peripheral wall 10. 17 is formed. Furthermore, a mounting f118 is provided protruding from the center of the rear surface of the base 1. As shown in FIGS. 8 to 14, the insert block 2 has a support portion 20b at the end of a flat base plate portion 20a.
The base 20 is provided with a protruding guide portion 20c and a guide portion 20c. Three connection pieces 21 are provided protruding from each side surface of the substrate portion 20a, and six contact springs 22 are provided protruding from one surface of the support base portion 20b. That is, the insert block 2 is
As shown in FIG. 11, a member in which a connecting piece 21 and a contact spring 22 are integrally formed from a conductive spring material is used.
It is formed integrally with a base 20 made of synthetic resin. As shown in FIGS. 13 and 14, the connecting piece 21 is bent into an abbreviated shape, and as shown in FIG. 12, the vertical piece has a press-fitting slit 21a that opens toward the tip edge. has been done. The contact spring 22 protrudes from the distal end surface of the support base part 20b, and as shown in FIG. have. The guide stand portion 20c has each contact spring 2
It is provided with a plurality of arms 23 into which two tip ends are inserted, respectively. In this way, since the guide stand part 20c having the eraser 23 for positioning the tip of the contact spring 22 is formed integrally with the support stand part 20b from which the contact spring 22 is led out,
If the tip of the contact spring 22 is inserted into the socket 23 when manufacturing the insert block 2, the position of the contact spring 22 can be determined only by the insert block 2, and the contact spring 22 can be used when attaching the insert block 2 to the base 1. deformation can be prevented. Each contact spring 22 contacts a contact of the modular plug, for example the tenth
When the modular plug is inserted from the bottom of the figure, the contact spring 2
2 bends to the right in FIG. 10 with the tip end inserted into the dip 23 of the guide stand 20c. A through hole 24 through which the above-mentioned mounting tube 18 is inserted is bored in the center of the base plate portion 20a. As shown in FIG. 1, each terminal block 3 includes a substantially U-shaped terminal plate 30 and a pair of locking springs 31 disposed 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 a locking spring 31 corresponds to each contact piece 30a. The locking spring 31 includes a locking piece 31a having a spring force directed toward the contact piece 30a and a holding piece 31b. The locking piece 31. is held between the contact piece 30a and the locking piece 31.
By cutting a into the wire, it is possible to prevent the wire from being pulled out. A connecting protrusion 32 is provided on the center piece of the terminal plate 30 so as to protrude between a pair of contact pieces 30a. The connecting protrusion 32 is formed on the same plane as the center piece of the terminal board 30. The terminal block 3 has a central piece of the terminal plate 30 inserted into each of the six terminal storage chambers 13 formed in the base 1.
It is delivered facing the opening side. Protruding base portions 1 l b, 11 C corresponding to each terminal storage chamber 13
As shown in FIG. 7, a release piece 33 is formed on the peripheral wall. The release piece 33 is formed into a substantially J-shape, and has one end connected to the base 1 and the other end abutted against the locking piece 31a. Furthermore, as shown in FIG. 2, a pair of wire insertion holes 34 are opened at the tip surfaces of the projecting base portions 11b and 11C, corresponding to each terminal storage chamber 13, and the wires are inserted through the wire insertion holes 34. Then, the electric wire is held between the lock piece 31a, the presser piece 31b, and the contact piece 30a. Moreover, when removing the electric wire, the release piece 33 may be operated to pull out the lock piece 31a in a bent state. By the way, since each of the protrusions 11b and llc 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 cutout groove 3 into which a connecting protrusion 32 is inserted is provided at a portion of the opening edge of the terminal storage chamber 13 facing the left and right center line of the base 1.
5 is formed. Place the terminal block 3 into the terminal storage chamber 13
When the base 1 is installed, the connecting protrusion 32 projects into the center of the base 1 through the cutout groove 35. When the insert block 2 is attached to the base 1 in this state, the connecting protrusion 32 is press-fitted into the pressure welding slit 21a of the connecting piece 21, and the terminal block 3 and insert block 2 are assembled to the base 1 in sequence. Just,
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 includes a pair of door bodies 40 and 41, and a pair of return springs 42 made of coil springs that bias one of the door bodies 40. A plug insertion port 19 for introducing the modular plug into the jack storage chamber 12 is opened in the peripheral wall of the projecting base portion 11a, and the door block 4 is inserted into the jack storage chamber 12 so that the plug insertion port 19 can be opened and closed. It will be done. The plug insertion port 19 opens on the bottom surface (bottom surface in FIG. 5) when the base 1 is attached to a mounting surface such as a wall.
9, an exposure notch 19a is formed at the front lower end of the protrusion 11a of the base 1. The door body 40 has an operating piece 40a that protrudes downward from the front edge of the base 1 through the plug insertion port 19, and a hook protrusion 40b that is hooked on the door body 41 on the lower surface of the rear end of the base 1. A spring retainer piece 40c is provided to protrude from both left and right edges of a portion of the door body 40 corresponding to the operating piece 40a. The door body 41 is arranged on the lower surface side of the door body 40, and the hook protrusion 40b is hooked on the upper surface of the door body 41 so as to be slidable back and forth. The return spring 42 has one end fixed to the back surface 11 of the base l.
6, and as shown in FIG. 15, the other end of the spring receiver abuts on the piece 40c. Therefore, the door body 40 is urged forward by the return spring 42. The door body 41 moves forward together with the door body 40 when the hook protrusion 40b is hooked on the front end of the door body 41. As a result, when no external force is applied to the operating piece 40a, as the door body 40 moves forward, the door body 41 also moves forward, closing the plug insertion port 19. In this way, since the return spring 42 is used to bias the door bodies 40 and 41, the door bodies 40 and 41 can be closed regardless of the orientation in which the base 1 is attached. The spring force allows the plug insertion port 19 to be reliably closed. In addition, when inserting a 6-modular lug whose front surface of the operating piece 40a is exposed from the exposure notch 19a when the plug insertion port 19 is closed, pressing the operating piece 40a against the spring force of the return spring 42 will cause the door to close. 40 opens and the operation piece 40a
The door body 41 also opens when it is pushed. As described above, attach the insert block 2 to the base 1,
A back cover 6 is fixed to the rear surface of the base 1 with the terminal block 3 and door block 4 attached. Back cover 6 is base 1
It is arranged so as to cover the inner side of the peripheral wall 10 except for the magnet attachment part 15. A heat attachment protrusion 61 is protruded from the rear surface of the base 1. After inserting the heat attachment protrusion 61 into a fixing hole 62 provided in the back cover 6, the heat attachment protrusion 61 is crushed by heat, so that the back M6 is attached to the base 1. It is designed to be fixed. As shown in FIG. 5, the back cover 6 is formed with a presser piece 63 that is arranged along the front end surface of the support portion 20b of the insert block 2 when attached to the base 1, and the back cover W6 By attaching the contact spring 22 to the base 1,
is sandwiched between the support base portion 20b and the presser piece 63. Generally, even if the contact spring 22 protruding from the support base part 20b is bent along the tip surface of the support base part 20b, springback occurs in the contact spring 22, so if the insert block 2 alone is used, the contact spring 22 Although the position cannot be determined, by bringing the contact spring 22 into close contact with the support base portion 20b using the presser piece 63, the contact spring 22
It is possible to stabilize the position of A through hole 64 into which the mounting tube 18 provided on the base 1 is inserted is formed in the center of the back cover 6. The front surface of the base 1 is covered by a cover 5, and the cover 5 includes a peripheral wall 50 that covers the peripheral wall 10 of the base 1. On the inner surface of the peripheral wall 50, there is a pressing protrusion 51 that presses against the peripheral wall 10 of the base 1. This is to prevent the cover 5 from falling off when it is fitted onto the base 1. A wire pull-out hole 52 is formed in the peripheral wall 50 at a portion corresponding to the wire pull-out notch 17 of the base 1, and a cutout window 53 is formed at a portion corresponding to the plug insertion opening 19. Moreover, an exposure notch 53a is also formed in the cover 5 at a portion corresponding to the exposure notch 19a. Therefore, if the cover 5 is attached to the base 1 and the door block 4 closes the plug insertion port 19, the operating piece 40a can be seen through the exposure notch 53a, and the door block 4 Even though the door block 4 is provided on the underside of the base 1, the shape and shape of the door block 4 can be confirmed from diagonally above. Furthermore, when inserting a modular plug, the position of the plug insertion port 19 can be confirmed, making the insertion operation easier. Here, operation piece 40
If a is colored in a different color from the color of the cover 5, visual recognition becomes easier. A screw holding portion 54 having a plurality of protrusions is formed on the inner circumferential surface of the cover 5 at a portion that does not overlap with the protrusions 11a to 11c of the base 1, and is screwed into a wall surface etc. through the mounting tube 18. The mounting screws 55 are held (see Fig. 16). Since the mounting screws 55 are temporarily held on the cover 5 in this way, there is no risk of losing the mounting screws 5. Furthermore, the magnet mounting portion 15 is attached to the magnet. The mounting screw 55 does not get in the way when attaching.

【Effect of the invention】

As described above, according to the first aspect of the present invention, the insert block is provided with a connection piece made of a sheet metal electrically connected to the contact spring, and the connection piece has a pressure welding slit that opens at a desired end edge. The connection protrusion that protrudes along the rear surface of the base from the terminal block attached to the base and connected to the external electric wire is press-fitted into the pressure welding slit of the connection piece. The connecting protrusion can be press-fitted into the pressure welding slit when assembling the insert block and terminal block, and the assembling and electrical connection of the insert block and terminal block can be done at the same time, resulting in a reduction in assembly man-hours. It will be reduced. According to the second aspect of the present invention, the return spring urges the door body that slides along the opening surface of the plug insertion port in a direction to close the plug insertion port, so that the door body can be moved regardless of the installation direction. Since it can be closed reliably and is prevented from being left half-open, it is possible to reliably prevent dirt from entering. In the structure of claim 3, the door body is slid in the front-rear direction of the base and is arranged so as to close the plug insertion port when moving forward, and the front edge of the plug insertion port is provided with the door body closer to the front edge of the door body. An exposure notch is formed to expose the downwardly protruding operating piece on the front side of the base, so when the door body is closed, the operating piece can be viewed diagonally from above through the exposing notch, and the door This makes it easy to know whether the body is open or closed. According to the structure of claim 4, the magnet attachment portion is formed at a key location on the rear surface of the base, and the screw holding portion is formed at a key location corresponding to the magnet attachment portion in the cover that is removably fitted on the front surface of the base. Since the mounting screws for attaching the base to the wall are temporarily held in the screw holder, it is possible to prevent the mounting screws from being lost.Furthermore, when installing the magnet, the mounting screws can be removed by removing the cover. It doesn't become.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is a front view of the same with the cover removed, FIG. 3 is a front view of the same, and FIG. 4 is a partially cutaway rear view of the same, and FIG. Figure 5 is a cross-sectional view of the same as above.
Figure 6 is a bottom view of the same as the above, Figure 7 is a sectional view of the main parts of the same, Figure 8 is a perspective view of the insert block used in the same, and Figure 9 is a perspective view of the insert block used in the same.
Figures 14 through 14 show a front view, sectional view, rear view, side view, bottom view, and partially cutaway plan view of the insert block used in the above, and Figure 15 shows the relationship between the door body and the return spring in the same. The bottom view shown in FIG. 16 is a rear view of the main part of the cover used for the same. 1...Base, 2...Insert block, 3...
・Terminal block, 4... Door block, 5... Cover, 15... Magnet mounting part, 19... Plug insertion slot, 19a... Exposure notch, 20... Base, 21...
... Connection piece, 21a... Pressure welding slit, 22... Contact spring, 32... Connection protrusion piece, 40... Door body, 40a...
...Operation piece, 42...Return spring, 54...Screw holding part, 55...Mounting screw. Figure 2 Figure 3 Agent Patent Attorney Ishi 1) Chief 7 Figure 6 Figure 6 Figure 8 Figure 8 Figure 9 Figure 10 Figure 13 Figure 15 Figure 14 Figure 16

Claims (4)

[Claims] (1) An exposed device that includes a base that is attached to a mounting surface such as a wall, and connects a modular plug that is inserted through a plug insertion hole that opens on the bottom of the base to an insert block that is attached to the base. In the type modular jack, the insert block includes multiple contact springs that are electrically connected to the modular plug, a connection piece made of sheet metal that is electrically connected to the contact springs, and the contact springs and the connection piece. The connection piece is formed with a base made of insulating material that protrudes from the base, and the connection piece has a pressure welding slit that opens as desired at the tip edge, and the terminal block that is attached to the base and to which external electric wires are connected is located along the rear surface of the base. An exposed type modular jack characterized in that a connecting protrusion protruding from the top is press-fitted into a pressure welding slit of the connecting piece. (2) A door block is provided in the plug insertion slot, and the door block includes a door body that slides along the opening surface of the plug insertion slot, and a return spring that biases the door body in a direction to close the plug insertion slot. The exposed modular jack according to claim 1, further comprising: (3) The door body is arranged to slide in the front-rear direction of the base and close the plug insertion port when moving forward, and an operating piece is provided on the front edge of the door body so as to protrude downward. 3. The exposed modular jack according to claim 2, wherein the front end edge of the plug insertion opening is formed with an exposure notch for exposing the operating piece to the front side of the base. (4) A cover is removably attached to the front side of the base, and a magnet attachment part is formed at key points on the rear side of the base to attach a magnet to the base when attaching the base to the mounting surface using a magnet. 2. The exposed modular jack according to claim 1, wherein a screw holding part is formed at a key point of the cover corresponding to the mounting part, and the mounting screw for attaching the base to the wall surface is temporarily held in the screw holding part. .