JP4079062B2 - Exposed modular jack - Google Patents

Description

  The present invention relates to an exposed modular jack installed in a form exposed on a construction surface such as a wall surface.

  Conventionally, a plug insertion port into which a modular plug is inserted is connected to a container body that is open on one surface and a contact that contacts a contact of the modular plug, and through an insertion hole that is opened on the other surface of the container body. The container is constituted by a body provided with a cable that is led out and fixed to the construction surface, and a cover that is provided with at least a part of the insertion hole and is attached to the body. There has been provided an exposed modular jack that is installed so as to be exposed on the surface (see Patent Document 1). Here, for the connection between the body and the cover, engagement holes are respectively formed on the outer surfaces of the assembly protrusions protruding from the four corners of the front surface of the body, and the engagement holes of the assembly protrusions on the inner peripheral surface of the cover A structure is employed in which a cover is coupled to the body by fitting assembly claws projecting from opposing portions.

  Such an exposed modular jack, for example, is connected to a construction surface such as a wall surface, a side plate of a desk or a leg by connecting a cable (telephone cable, LAN cable, etc.) drawn from under the floor. Since a human leg may be caught on the cable, a coupling strength that can withstand an impact load (approximately 30 to 100 N) applied to the body and the cover via the cable when the leg is caught is required. In other words, if the bond strength between the body and the cover is not sufficient, an impact load is directly applied to the connection part between the internal contact and the cable, and in the worst case, the connection between the contact and the cable may be disconnected. It is necessary to increase the bonding strength between the body and the cover so that no serious situation occurs.

Therefore, the applicant of the present invention has a plurality of rail portions 11, 11 that are opposed to the front surface of the body 2 with a gap and are extended substantially parallel to the direction from the cable insertion hole 5, as shown in FIG. The cover 3 is provided with an engagement piece (not shown) that is provided and moves in the gap G while being engaged with the rail portion 11 when the cover 3 is slid along the front surface of the body 2. A modular jack is proposed. That is, in this exposed modular jack, the coupling strength between the body 2 and the cover 3 in the direction orthogonal to the direction in which the cable 60 is led out is ensured by the engagement between the rail portion 11 and the engagement piece. Since the body 2 and the cover 3 can be easily coupled by sliding the 3, it is possible to secure the coupling strength between the bodies 2 and the cover 3 without degrading the assembling property.
JP 2002-134233 A

  However, in the conventional example proposed by the applicant, the cable 60 can move freely although it is connected to the modular jack block 30 at one end. It was necessary to slide the cover 3 placed on the front surface of the body 2 while being held in the hand and aligned with the cable insertion hole 5 of the cover 3, and it was difficult to easily couple the body 2 and the cover 3 together. .

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an exposed modular jack capable of easily connecting a body and a cover.

  In order to achieve the above-mentioned object, the invention of claim 1 is provided with a vessel body in which a plug insertion port into which a modular plug is inserted is provided on one surface, and is exposed in a form exposed on a construction surface such as a wall surface. In the modular jack, the body is constituted by a body fixed to the construction surface and a cover that is attached to the body by sliding along the front surface of the body, and contacts the modular plug. A temporary cable holding portion for temporarily holding a cable connected to a contact in contact with the child and led to the outside through an insertion hole opened on the other surface of the vessel body in a direction in which the cover slides; The cable temporary holding portion is provided so as to cover the cable in the circumferential direction and open to the side along the front surface of the body, and the cable is inserted from the opening. A shall, said projecting forwardly from the body front surface, wherein the cable is provided with a projection to overcome when being inserted through the opening.

  According to this invention, since the movement of the cable is regulated by temporarily holding it in the cable temporary holding part, it is not necessary to hold the cable in the hand and align it with the insertion hole when connecting the body and the cover. In comparison, the body and the cover can be easily combined. Moreover, a cable can be inserted from a side opening along the front surface of the body and temporarily held by the temporary cable holding portion, and the cable is covered with the temporary cable holding portion in a direction facing the front surface of the body. Thus, the tensile strength of the cover when the cable is pulled toward the cover is improved. In addition, when the cable gets over the protrusion, a click feeling is given, and it can be felt by touch that the cable is surely temporarily held by the cable temporary holding portion.

  According to the present invention, since the movement of the cable is restricted by temporarily holding it in the cable temporary holding part, it is not necessary to hold the cable in the hand and align it with the insertion hole when connecting the body and the cover. Compared to the body and cover, the cable can be easily connected, and the cable can be inserted and temporarily held in the temporary cable holder through the side opening along the front of the body. Since the cable is covered with the cable temporary holding part in the direction to be pulled, the tensile strength against the cover when the cable is pulled toward the cover is improved, and furthermore, a click feeling is given when the cable gets over the protrusion, There is an effect that it is possible to let the user know by touch that the cable has been temporarily held by the temporary cable holding portion.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an exploded perspective view showing an exposed modular jack of the present embodiment. The exposed modular jack is configured by housing a modular jack block 30 in the body 1. The container 1 is formed in the shape of a rectangular parallelepiped with a synthetic resin material, and is fixed in such a manner that the rear surface (lower surface in FIG. 1) faces a construction surface such as a wall surface and is modular on the front surface (upper surface in FIG. 1) side. The body 2 to which the jack block 30 is attached and the cover 3 that is detachably coupled to the body 2 so as to cover the front side of the body 2 and the modular jack block 30 are configured.

  The modular jack block 30 includes a jack body 31 formed of an insulating material such as a synthetic resin, and a plug insertion port 32 into which a modular plug is inserted opens on the front surface (left side surface in FIG. 1) of the jack body 31. The terminal portion 33 having eight press contact terminals (not shown) is exposed on the front surface (the upper surface in FIG. 1) of the jack body 31. Also, in the plug insertion port 32 of the jack body 31, a plurality (6 or 8) of linear or narrow strip-shaped contacts 18 made of a spring material are held. Are electrically connected. On the other hand, the press contact terminal has a substantially Y shape having a press contact slit that breaks the insulation coating and contacts the internal conductor when the covered electric wire is press-fitted, and is formed in a known shape. Further, the press contact terminals are arranged so as to be exposed in the front surface of the jack body 31 in a state where the modular jack block 30 is fitted in the fitting recess 8 of the body 2 and arranged in two right and left rows, as will be described later. The jack body 31 is opened to the front (upper surface in FIG. 1) side. Therefore, each covered electric wire of the cable 60 introduced into the container 1 through the cable insertion hole 5 described later is connected to the contact 18 by being connected to the press contact terminal. In a state where the covered electric wires are connected to the press contact terminals, each of the covered electric wires is introduced from the side surface of the jack main body 31 facing the one end surface where the cable insertion hole 5 in the longitudinal direction of the vessel body 1 opens. Further, a wire stopper 34 is fitted to a portion of the jack body 31 where the press contact terminal is exposed. In a state where the wire stopper 34 is fitted to the jack body 31, the covered electric wire press-fitted into the pressure contact slit can be pressed by the wire stopper 34, and the covered wire is prevented from coming off from the pressure contact slit.

  Narrow front walls 6 and 6 projecting forward project from both ends of one end side in the longitudinal direction of the body 2 (left side in FIG. 1), and a shutter block 7 is interposed between the pair of front walls 6 and 6. Arranged. The shutter block 7 includes a main body 7a that is formed in a flat rectangular shape and has a rectangular opening window 7b in the center, and two door bodies 22 and 23 that close the opening window 7b so that the opening window 7b can be opened and closed. A fitting recess 8 into which the modular jack block 30 is fitted is formed on the front side of the body 2 at a portion corresponding to the opening window 7 b of the shutter block 7, and is fitted to the fitting recess 8 and attached to the body 2. A modular plug is inserted into the plug insertion port 32 of the modular jack block 30 through the opening window 7 b of the shutter block 7. Boss portions 20 are formed on both sides of the fitting recess 8 in the short direction of the body 2, and attachment holes 21 penetrating the body 2 in the front-rear direction are formed in each boss portion 20.

  The door bodies 22, 23 of the shutter block 7 are movable in the front-rear direction (vertical direction in FIG. 1) and are elastically biased forward to be held by the main body 7a so as to close the opening window 7b so as to be opened and closed. . An operation piece 22a exposed to the outside through the opening window 7b protrudes from the front end edge of one door body 22, and two door bodies are applied by applying a force in a direction of moving backward to the operation piece 22a. 22 and 23 move rearward to open the opening window 7b, and the plug insertion port 32 is exposed through the opening window 7b. The structure for opening and closing the opening window 7b in this way is well known in the art and will not be described in detail.

  The cover 3 is formed in a rectangular parallelepiped shape whose rear surface (lower surface in FIG. 1) is open, and covers the front side of the body 2 in a state where the modular jack block 30 is mounted. An opening 4 is provided in the peripheral wall on one end side in the longitudinal direction (left side in FIG. 1) of the cover 3 over the entire length in the lateral direction, and the cable 60 is inserted through the peripheral wall on the other end side in the longitudinal direction (right side in FIG. 1). For this purpose, a cable insertion hole 5 is provided (see FIG. 2). Further, in the vicinity of the opening 4 on the front surface of the cover 3, there is provided an attachment recess 3 a to which a color chip 40 for identifying a connection destination system of the plug insertion port 32 is attached. The color chip 40 is made of a synthetic resin molded product and is colored for the identification.

  Here, basically two types of means for fixing the above-described container 1 to the construction surface are prepared. That is, for a construction surface such as a wooden wall, the wood screw may be screwed into the construction surface through the attachment hole 21 provided in the boss portion 20 of the body 2. On the other hand, when the construction surface is made of steel (for example, when attached to an office desk or the like), a magnet 41 that is detachably attached to the back surface of the body 2 may be magnetically attached to the construction surface.

  Next, the coupling structure of the body 2 and the cover 3 in this embodiment will be described. However, this coupling structure is common to the conventional example shown in FIG.

  As shown in FIG. 1, the portion near the front wall 6 at both ends along the longitudinal direction on the front surface of the body 2 is opposed to the attachment surface (front surface) covered by the cover 3 with a gap G, and the cable 60. Rail portions 11 extending substantially in parallel with the lead-out direction from the cable insertion hole 5 (longitudinal direction of the container body 1) project forward (upward in FIG. 1). The rail portion 11 has a bowl shape having a flat plate-like main piece 12 projecting forward from the front surface of the body 2 and an engagement projecting piece 13 projecting from the front end edge of the main piece 12 toward the outside of the body 2. Is formed.

  On the other hand, the inner surface of both ends along the longitudinal direction of the cover 3 is engaged with the engaging protrusion 13 of the rail portion 11 when the cover 3 is slid along the front surface of the body 2 in the longitudinal direction. An engagement piece (not shown) that moves in the gap G in a state is provided.

  Therefore, the cover 3 is oriented in the direction approaching the front wall 6 of the body 2 (hereinafter referred to as “mounting direction”) with the cover 3 placed on the front surface of the body 2 so that the engagement piece does not overlap the engagement protrusion 13. If the slide is moved, the engagement piece enters the gap G between the front surface of the body 2 and the engagement protrusion 13, and the engagement protrusion 13 and the engagement piece engage with each other, so that the cover 3 is attached to the body 2. They can be attached and joined together (see FIG. 2). Further, in order to remove the cover 3 from the body 2, the cover 3 is slid in the direction opposite to the mounting direction (hereinafter referred to as “the anti-mounting direction”) to release the engagement state between the engagement protrusion 13 and the engagement piece. By doing so, the cover 3 can be removed from the body 2.

  In the present embodiment, the cover 3 is slid and locked in a state of being attached to the front surface of the body 2, and the cover 3 is detached from the front surface of the body 2 along the front-rear direction and the lateral direction of the body 1. The body 2 and the cover 3 are provided with locking means for preventing the above. The locking means includes a pair of locking protrusions provided on the cover 3 and a pair of locking protrusions which are provided on the body 2 and are fitted to the pair of locking protrusions when the cover 3 is slid. It consists of a fitting part 16.

  Although not shown in the drawings, the locking protrusions protrude inward in the longitudinal direction on the peripheral wall on one end side in the longitudinal direction of the cover 3 provided with the cable insertion holes 5, and project from the positions sandwiching the cable insertion holes 5. Has been. The lock fitting portion 16 protrudes forward from the front surface on one end side in the longitudinal direction of the body 2 on the side from which the cable is led out, and has a lock fitting hole 16a that opens outward in the longitudinal direction of the body 2. It is formed (see FIG. 5).

  Thus, when the cover 3 is slid in the mounting direction with the front surface of the body 2 being covered, the locking protrusion of the cover 3 is formed in the locking fitting portion 16 of the body 2. Fits into the hole 16a. Therefore, the body 2 and the cover 3 are not only engaged with the rail portion 11 (engagement projection piece 13) and the engagement piece, but also fitted with the lock projection portion and the lock fitting portion 16 (lock fitting hole 16a). Since they are also coupled together, the coupling strength between the body 2 and the cover 3 in the front-rear direction and the lateral direction of the container 1 can be increased.

  By the way, a cable temporary holding portion 9 is provided on the front surface on one end side in the longitudinal direction of the body 2 on the side from which the cable 60 is led out so as to be sandwiched between the pair of locking fitting portions 16. Between the cable temporary holding part 9 and the fitting concave part 8, a guide part 10 for guiding the cable 60 to the cable temporary holding part 9 is provided. The cable temporary holding portion 9 is formed in a shape (substantially bowl-shaped) that covers the cable 60 in the circumferential direction and opens to the side along the front surface of the body 2, and temporarily holds the cable 60 inserted from the opening. is there. The guide portion 10 is projected forward from the front surface of the body 2, and semi-cylindrical guide ribs 10 a are provided at both end edges along the longitudinal direction of the body 2, and the cable temporary holding portion 9 passes between the guide ribs 10 a. The cable 60 is guided. Here, as shown in FIG. 5, at the end portion of the guide portion 10 on the side close to the temporary cable holding portion 9, a protrusion 14 is provided that protrudes further forward than the guide rib 10a. Therefore, when the cable 60 is inserted into the cable temporary holding portion 9 from the opening, a click feeling can be given when the cable 60 gets over the protrusion 14, so that the cable 60 is securely held temporarily by the cable temporary holding portion 9. You can be notified by touch (click feeling).

  As described above, in the present embodiment, the movement of the cable 60 can be restricted by temporarily holding the cable 60 whose one end is connected to the contact of the modular jack block 30 to the cable temporary holding portion 9. As shown, there is no need to hold the cable 60 and align it with the cable insertion hole 5 when connecting the body 2 and the cover 3, and the body 2 and the cover 3 can be easily combined as compared with the conventional example. It can be done. Moreover, since the cable temporary holding part 9 is formed in a shape in which the front (upper side in FIG. 1) is closed, the cable 60 is pulled toward the cover 3 in a state where the body 2 and the cover 3 are coupled. There is an advantage that the tensile strength with respect to the cover 3 is improved.

  By the way, in the part where the guide portion 10 is provided on the front surface of the body 2, a string-like fixing band (not shown) that penetrates the body 2 from the front to the rear and binds and fixes the cable 60 as shown in FIG. ) Is provided so as to straddle both side surfaces of the guide portion 10 and the front surface of the body 2 along the lead-out direction of the cable 60. The fixing band is formed in, for example, an elastic string, and is provided with an insertion hole through which the other end is inserted at one end, and is engaged with a plurality of lock claws protruding from the inner peripheral surface of the insertion hole. These engaging projections are so-called insulated ties formed in a row in the longitudinal direction. That is, the cable 60 is fixed to the body 2 (guide portion 10) by winding and tightening the fixing band inserted through the insertion port 15 around the cable 60, so that when the cable 60 is pulled, each of the cables 60 is fixed. The tension acting on the connection portion between the covered wire and the contact 18 can be relaxed. However, when the cable 60 is tightened with a fixed band, excessive pressure is applied to the covered electric wire (twisted pair wire), and the line capacity and the like may change, thereby degrading the transmission performance. In this embodiment, The distance between the pair of insertion openings 15 is made wider than the diameter of the cable 60, and the range in which the fixed band comes into contact with the cable 60 is narrowed so that deformation of the cable 60 when the fixed band is tightened is suppressed. Furthermore, in this embodiment, by fixing the fixed band with the guide ribs 10a projecting from both end edges of the guide portion 10, the contact range between the fixed band and the cable 60 is further narrowed, and the cable 60 is tightened. The deformation is further suppressed.

  Here, since the fixing band may inadvertently move in the insertion direction of the body 2 into the insertion port 15 (is idle) and may be loosened, the body 2 faces the fixing band of the body 2 as shown in FIG. Locking portions 17 for locking the engaging protrusions are provided at both end edges facing the insertion port 15 on the back surface of the guide portion 10 that is a portion to be operated. The locking portion 17 is formed of a rectangular parallelepiped protrusion protruding rearward, and the engagement protrusion is locked at an end edge thereof to restrict the idle rotation of the fixing band and prevent the occurrence of looseness.

  The above embodiment is a so-called one-port type in which one modular jack block 30 is housed in the body 1, but this reference example 1 is a two-port system in which two modular jack blocks 30 are housed in the body 1. Of the type. However, at least those having the same functions as those of the constituent elements of the embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 8 and FIG. 9, the body 2 has a dimension in the width direction orthogonal to the lead-out direction of the cable 60 approximately double that of the embodiment, and two fittings arranged in parallel in the width direction. The modular jack block 30 is fitted and fixed in the recess 8, and the shutter block 7 is attached at a position facing the plug insertion port 32 of each modular jack block 30 at the front end.

  A guide portion 10 and an insertion port 15 are provided at the center in the width direction on the rear side of the front surface of the body 2, and a temporary cable holding portion 19 is provided between the guide portion 10 and each modular jack block 30. The temporary cable holding portion 19 in the first reference example is a substantially rectangular tube shape in which two adjacent side surfaces are open, and includes a pair of cylindrical bodies 19 a that protrude in the vicinity of both end edges of the guide portion 10. The cable 60 has a shape that covers the cable 60 in the circumferential direction and opens forward (upward in FIG. 9) facing the front surface of the body 2, and the two cables 60 connected to each modular jack block 30 are connected to a pair of tubes. Temporarily held by the members 19a and 19a and led out from the cable insertion hole 5 through the guide portion 10. As described above, in the first reference example, the plurality of cables 60 can be temporarily held together by the cable temporary holding unit 19 including the pair of cylindrical bodies 19a and 19a, and even when there are a plurality of cables 60, the body 2 and the cover 3 can be joined. Can be easily performed.

  In addition, Reference Example 2 shown in FIG. 10 is a four-port type in which four modular jack blocks 30 are housed in the container 1, but at least the components and functions of the embodiment or Reference Example 1 are common. Are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 10, the body 2 has a width-direction dimension orthogonal to the lead-out direction of the cable 60 that is about four times that of the embodiment, and has four fitting recesses 8 arranged in parallel in the width direction. The modular jack block 30 is fitted and fixed to each other, and the shutter block 7 is attached at a position facing the plug insertion port 32 of each modular jack block 30 at the front end. Further, a guide portion 10 is provided at the center in the width direction on the rear surface side of the front surface of the body 2, and a temporary cable holding portion 19 including a pair of cylindrical bodies 19 a and 19 a is provided between the guide portion 10 and each modular jack block 30. Is provided. Further, guide portions 10 and saddle-shaped cable temporary holding portions 9 are also provided on the rear surface sides of both side walls facing the width direction of the front surface of the body 2. In addition, a knockout portion 24, which is a thin plate-like portion, is erected on both side edges and the rear edge of the body 2 facing the temporary cable holding portions 9 and 19, respectively, and the cover 3 corresponds to the knockout portion 24. A notch 25 is provided. The knockout part 24 can be used as a cable conduction hole for leading the cable 60 connected to the modular jack block 30 by breaking the thin part.

  Thus, in the second reference example, the cable 60 can be led out from any one of the three directions through the cable insertion holes appropriately formed on the rear surface and both side surfaces of the container 1, and is led in any direction. Even in this case, the cable 2 is temporarily held by the temporary cable holding portions 9 and 19 so that the body 2 and the cover 3 can be easily coupled.

It is a disassembled perspective view of embodiment of this invention. The same as above, (a) is a front view, (b) is a bottom view, (c) is a top view, and (d) is a right side view. It is a perspective view same as the above. It is explanatory drawing explaining the coupling | bonding method of a body and a cover same as the above. It is a perspective view which shows the principal part of the body in the same as the above. It is sectional drawing which a part of body was abbreviate | omitted in the same as the above. It is the perspective view seen from the back of the body in the same as the above. It is a top view of the state which removed the cover of the reference example 1 of this invention. It is a perspective view of the state which removed the cover same as the above. It is a disassembled perspective view of the reference example 2 of this invention. It is a disassembled perspective view of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 2 Body 3 Cover 5 Cable insertion hole 9 Temporary cable holding part 30 Modular jack block

Claims (1)

An exposed modular jack provided with a body having a plug insertion port on one side into which a modular plug is inserted and installed on a construction surface such as a wall surface, and a body fixed to the construction surface; The container is configured by a cover that engages and adheres to the body by sliding along the front surface of the body, and is connected to a contact that contacts the contact of the modular plug, and the other of the container A cable temporary holding portion is provided to temporarily hold the cable led to the outside through the insertion hole opened on one surface of the cover in a sliding direction of the cover, and the cable temporary holding portion is provided in the circumferential direction. The cable is inserted through the opening and protrudes forward from the front of the body. And, Surface-type modular jack in which the cable is characterized by having a projection to overcome when being inserted through the opening.

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