JP5240528B2 - Modular jack - Google Patents

Description

  The present invention relates to a modular jack, and more particularly to a modular jack fixed to a mounting board.

  Electrical devices such as televisions are provided with a modular jack to which a plug such as a LAN cable is connected in order to perform data communication. The modular jack has a modular jack body into which a connector such as a LAN cable is inserted, and a metal case attached to the modular jack body so as to cover the modular jack body. A protrusion is provided on the edge of the metal case. By inserting the protrusions into holes formed in the mounting board in advance, the modular jack can be firmly fixed to the mounting board. Such a modular jack is described, for example, in JP-A-10-270112 (Patent Document 1).

JP 10-270112 A

  Depending on the electrical equipment to which the modular jack is attached, the modular jack may not require a metal case. Even in such a case, the modular jack may be required to be firmly fixed to the mounting board. At this time, if the modular jack has only a modular jack body that does not have a metal case, it cannot be firmly fixed to the mounting board. On the other hand, in order to firmly fix the modular jack to the mounting board, even if the metal case is unnecessary, if the metal case is attached to the modular jack main body, the price of the modular jack increases.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a modular jack that can be firmly fixed to a mounting board and can be reduced in price.

In order to achieve the above object, the present invention provides a main body including a main body having a side wall in which a plug insertion hole is formed, a pin fixing portion provided on the side wall, a metal case covering the main body, and the metal A metal pin configured separately from the case and fixed to the pin fixing portion. When the metal case covers the main body, the metal pin comes into contact with the metal case and electrically connects to the metal case. A modular jack in which the metal pin is disposed so as to be sandwiched between the metal case and the side wall, and a protruding portion that protrudes toward the metal pin is provided on a part of the metal case. providing.

  It has a metal case and a metal pin, and the metal case and the metal pin are configured separately, and the metal pin is fixed to the pin fixing portion. It can be set as the structure which does not have a metal case but has a main-body part and a metal pin. For this reason, the modular jack can be firmly fixed to the mounting board by inserting the metal pin into the hole formed in the mounting board.

  Further, when the modular jack is configured to have a main body part, a metal case, and a metal pin, the metal case and the metal pin are electrically connected. Therefore, the metal case is used as a magnetic shield having the metal pin as a ground terminal. Can function.

Since metals pins are arranged sandwiching the metal case and the side wall, it can be reliably electrically connected to ensure contact between the metal pin and the metal case. Further, the metal pin can be fixed to the pin fixing portion without rattling.

Since a part of the metallic case projecting portion is provided which protrudes in the direction of the metal pin, that the projecting portion presses the metal pins, reliably electrically by more reliable contact between the metal pin and the metal case Can be connected. Further, the metal pin can be fixed to the pin fixing portion without rattling.

  Moreover, it is preferable that this protrusion part is comprised by extracting and raising a part of this metal case. Since the projecting portion is configured such that a part of the metal case is pulled out and raised, the projecting portion can be prevented from coming into contact with a portion of the metal case that is located around the projecting portion. For this reason, the projecting portion can be provided with a spring property, the metal case is more reliably brought into contact with the metal pin, the metal pin is pressed by the projecting portion, and the metal pin and the metal case are reliably electrically connected. Can do. Further, the metal pin can be fixed to the pin fixing portion without rattling.

The present invention includes a main body having a side wall in which a plug insertion hole is formed and having a side wall; a pin fixing portion provided on the side wall; a metal case covering the main body; and the metal case. A metal pin fixed to the pin fixing portion, and when the metal case covers the main body, the metal pin contacts the metal case and is electrically connected to the metal case, and the pin fixing The portion is formed of an anti-lifting piece that has an arm portion that is disposed opposite to the side wall and is immovable with respect to the side wall, and the metal case is a flat plate portion that is assembled by folding a metal plate and can contact the metal pin. The flat plate portion and the metal pin provide a modular jack that is sandwiched between the side wall and the arm portion of the lifting prevention piece.

  Since the flat plate portion and the metal pin are sandwiched between the side wall and the arm portion of the anti-lifting piece, the flat plate portion can be prevented from being separated from the side wall, and the metal pin and the metal case can be more reliably brought into contact with each other and reliably Can be connected. Further, the metal pin can be fixed to the pin fixing portion without rattling.

  The lifting prevention piece includes a base portion that connects the arm portion and the side wall, and a pin through hole into which the metal pin can be inserted is formed in the base portion, and the metal pin is press-fitted into the pin through hole. It is preferable that it is fixed to the base portion.

  Since the metal pin is fixed to the base portion by being press-fitted into the pin through hole, the metal pin can be fixed to the pin fixing portion without rattling.

  Moreover, it is preferable that a plurality of the pin through holes are formed. Since a plurality of pin through holes are formed, the pin through holes can be appropriately selected according to the positions of the through holes formed in the mounting substrate. For this reason, it is not necessary to manufacture the main body part corresponding to the position of the through hole formed in the mounting substrate, and it can be generalized, and the cost for manufacturing the modular jack can be reduced.

  Further, the base is connected to one end of the arm, and the distance between the other end of the arm and the side facing the side wall becomes shorter as the distance from the side approaches the one end of the arm. It is preferable that smooth chamfering is performed.

  The other end of the arm that faces the side wall is chamfered so that the distance from the side wall becomes shorter as it approaches one end of the arm, so a flat plate is formed between the arm and the metal pin. When the portion is inserted, the flat plate portion can be prevented from colliding with the other end of the arm portion, and the flat plate portion can be smoothly inserted.

  The base portion is connected to one end of the arm portion, and the metal pin has a base side portion fixed to the pin fixing portion and a free end side portion with respect to the base side portion, and the free end side portion Is preferably arranged so as to face the flat plate portion, and the free end side portion is chamfered so that the distance from the side wall becomes longer as the distance from the pin through hole is approached.

  The free end side is chamfered so that the distance from the side wall becomes longer as it approaches the pin through-hole, so when inserting the flat plate between the arm and the metal pin, the end of the metal pin The flat plate portion can be prevented from colliding with the edge, and the flat plate portion can be smoothly inserted.

  The material of the metal case is preferably different from the material of the metal pin. Since the material of the metal case and the material of the metal pin are different, the metal case can be made of a highly shielded material or an inexpensive material, while the metal pin is made of a material with high solder wettability. Alternatively, the metal pins can be plated so that the wettability of the solder is increased.

  As described above, the present invention can provide a modular jack that can be firmly fixed to a mounting substrate and can be reduced in price.

The perspective view which shows the modular jack by embodiment of this invention. The disassembled perspective view which shows the modular jack by embodiment of this invention. The bottom view which shows the modular jack by embodiment of this invention. The front view which shows the state which removed the metal pin and the metal case from the modular jack by embodiment of this invention. The principal part sectional drawing which shows the lifting prevention piece of the modular jack by embodiment of this invention. The perspective view which shows the state which removed the metal case from the modular jack by embodiment of this invention. The perspective view which shows the modification of the modular jack by embodiment of this invention.

  A modular jack according to an embodiment of the present invention will be described with reference to FIGS. The modular jack 1 is a jack to which a LAN cable is connected, and includes a main body 2 having a main body composed of a resin connector insertion portion 3, a resin terminal holding portion 4, and a resin cover 5, and a metal. A case 6 and a metal pin 7 are provided. The main body is a concept that does not include a lifting prevention piece 35 described later.

  In the following description, the direction from the terminal holding part 4 toward the connector insertion part 3 is defined as the front direction, and the opposite direction is defined as the rear direction to define the front-rear direction. Further, a direction perpendicular to the front-rear direction and directed from the connector insertion portion 3 toward an upper plate 63 of the metal case 6 is defined as an upward direction, and the opposite direction is defined as a downward direction. Also, the right and left directions in FIG. 3 are defined as the right direction and the left direction as the left direction. The modular jack 1 is configured symmetrically. Therefore, only the one outer surface 32A side is demonstrated about the description of the outer surface 32A mentioned later of the left-right direction.

  As shown in FIG. 2, the connector insertion portion 3 has a lower wall 31, a pair of side walls 32, 32, a back wall 33, and a front wall 34, and the plug insertion hole 3a is internally formed by these walls. A substantially rectangular parallelepiped frame is defined. One end of the pair of side walls 32, 32, one end of the back wall 33, and one end of the front wall 34 are connected to the lower wall 31, and the other end of the pair of side walls 32, 32, the other end of the back wall 33, and the front wall 34. The other end constitutes an upper end surface 3A. The plug insertion hole 3a has an opening 3b on the upper end surface 3A, and a modular plug (not shown) can be inserted into the plug insertion hole 3a from the opening 3b. In the plug insertion hole 3a, the back wall 33 is provided with a terminal group 3B which is a plurality of terminals that come into contact with terminals of a modular plug (not shown). Further, a pair of leg portions 36 projecting downward is provided on the lower surface of the lower wall 31, and the modular jack 1 is illustrated by inserting the leg portions 36 into holes formed in a mounting board (not shown). It is configured to be fixed to a mounting board (not shown).

  The outer surface of the side wall 32 constitutes an outer surface 32A. A first engagement protrusion 32B is provided on each of the outer side surfaces 32A. The first engagement protrusion 32B is disposed at a front portion of the outer surface 32A and at a substantially central portion in the vertical direction. The first engaging protrusion 32B has a wedge shape in which the protruding amount from the outer surface 32A increases from the upper side to the lower side.

  The front wall 34 is formed with a groove 34a that opens to the upper end surface 3A of the connector insertion portion 3, extends downward from the upper end surface 3A to the lower wall 31, and communicates the inside and outside of the plug insertion hole 3a. In addition, a lifting prevention piece 35 is provided on a part of the outer surface 32 </ b> A of the side wall 32 and connected to the lower wall 31. The floating prevention piece 35 corresponds to a pin fixing portion.

  As shown in FIG. 4, the lifting prevention piece 35 is substantially L-shaped by a base portion 35A extending from the lowermost end of the outer surface 32A and an arm portion 35B extending upward from the extending end of the base portion 35A. Configured. The arm portion 35B has a facing surface 35C at a position facing the outer surface 32A, and a space between the arm portion 35B and the outer surface 32A forms a groove portion 35a that is a gap. A slope 35D is provided at the upper end of the arm portion 35B so as to move away from the outer surface 32A as it goes upward. The edge portion 62C of the metal case 6 can be smoothly guided along the inclined surface 35D into the groove portion 35a, and the edge portion 62C can be prevented from colliding with the upper end of the arm portion 35B. . The floating prevention piece 35 is disposed such that the opening portion of the groove 35a is positioned below the first engagement protrusion 32B and a second engagement protrusion 41C described later. Further, the lifting prevention piece 35 is configured such that the distance from the outer surface 32A, which is the width of the groove portion 35a in the left-right direction, to the arm portion 35B is about 0.5 mm.

  As shown in FIG. 3, the base portion 35A is formed with a pin through hole 35b whose penetrating direction is directed in the vertical direction. The pin through-holes 35b are arranged at a predetermined interval in the front-rear direction, and the cross section cut by a plane perpendicular to the through-direction has a convex shape that protrudes outward from the main body 2. The base of the “convex” shape is flush with the outer surface 32A.

  The metal pin 7 penetrates the pin through hole 35b on the rear side of the two pin through holes 35b. The metal pin 7 is composed of a plate-like metal piece in which the surface of brass (alloy of copper, zinc, and tin) is tin-plated. As shown in FIG. And a pin portion 72 which is integrally connected to the portion 71 and has a tapered tip portion. The head 71 has a thickness of about 0.25 mm and is disposed in the groove 35a.

  As shown in FIG. 5, a head slope 71 </ b> A whose distance from the side wall 32 increases toward the lower side at a portion of the upper end portion of the head 71 that faces an outward projecting portion 65 of the metal case 6 described later. Is provided. The edge 62C of the metal case 6 can be smoothly guided along the head slope 71A into the groove 35a, and the edge 62C can be prevented from colliding with the upper end of the head 71. ing. The upper end portion of the head 71 corresponds to the free end side portion.

  The pin portion 72 has a pair of triangular protrusions protruding in the direction intersecting the direction in which the pin portion 72 extends from the head 71 in parallel to the oblong convex portion 72A protruding from the surface and the rectangular head 71. And an engaging projection 72B. The oval convex portion 72A extends in the axial direction of the pin 72 at the axial center position of the pin portion 72, and engages with the space corresponding to the portion above the “convex” of the pin through hole 35b as shown in FIG. doing. As shown in FIG. 2, the engaging protrusion 72B has a triangular shape in which the distance from the axial center of the pin portion 72 increases toward the upper side, and is pressed into the pin through hole 35b of the base portion 35A. The base portion 35A is fixed by biting into the base portion 35A. The tip of the pin portion 72 is inserted into a hole formed in a mounting board (not shown) and grounded. Since the pin portion 72 has an oval convex portion 72A, the thickness of the entire pin portion 72 can be increased, and the pin portion 72 is inserted into a hole of a mounting board (not shown) and soldered for grounding. In doing so, soldering can be ensured.

  The terminal holding part 4 is connected to the rear side of the connector insertion part 3, and the upper part and the rear part are opened and the inside is hollow. A circuit board (not shown) that is electrically connected to the terminal group 3 </ b> B is disposed inside the hollow shape. Below the terminal holding part 4, a mounting terminal group 4 </ b> A, which is a plurality of mounting terminals connected to a circuit board (not shown) and connected to the mounting board, is substantially suspended.

  In the terminal holding portion 4, side surfaces 41 are defined on both sides in the left-right direction, and the side surfaces 41 are configured to be flush with the side surfaces 32 </ b> A of the pair of side walls 32, 32. On the side surfaces 41, second engaging protrusions 41C are provided. The second engagement protrusion 41 </ b> C is disposed at a substantially central position in the vertical direction on the side surface 41. The second engaging protrusion 41C has the same shape as the first engaging protrusion 32B, and has a wedge shape in which the amount of protrusion from the outer surface 32A increases from the upper side to the lower side.

  As shown in FIG. 2, the cover 5 is disposed so as to cover the upper opening and the rear opening of the terminal holding part 4, and is attached to the terminal holding part 4. The cover 5 has an upper surface that is flush with the upper end surface 3 </ b> A, and has side surfaces that are flush with the outer surface 32 </ b> A of the pair of side walls 32, 32.

  The metal case 6 is assembled by bending a thin metal plate having a thickness of about 0.2 mm in which nickel plating is applied to the surface of brass (alloy of copper, zinc and tin), and functions as a shield case. The metal case 6 has a front plate 61, a pair of side plates 62, an upper plate 63, and a rear plate 64, and the entire upper surface and side surfaces of the connector insertion portion 3, the terminal holding portion 4, and the cover 5. The upper part of the front surface of the connector insertion part 3 and the upper part of the rear surface of the cover 5 are covered. The upper plate 63 is formed with an insertion hole 61a that communicates with the plug insertion hole 3b. In addition, introduction plates 61A and 61A that are inserted into the plug insertion holes 3a and guide the plugs into the plug insertion holes 3a are provided on both side edges in the left-right direction constituting the outline of the insertion hole 61a in the upper plate 63.

  The side plate 62 is formed with a first engagement hole 62a and a second engagement hole 62b, and an outward projecting portion 65 is provided. The outward projecting portion 65 is provided at the lower portion of the side plate 62, and is configured such that the entire substantially rectangular area slightly projects outward from the metal case 6. The outward projecting portion 65 is provided in a part of the metal case 6 and facing the arm portion 35B, and is disposed in the groove portion 35a as shown in FIG. It arrange | positions so that the head 71 of the metal pin 7 may be pinched | interposed by the outward protrusion part 65 and 32 A of outer side surfaces. The outward projecting portion 65 corresponds to a flat plate portion.

  A head pressing portion 66 is provided on the outward projecting portion 65. Two head pressing portions 66 are provided at a predetermined interval in the front-rear direction. The head pressing portion 66 has a substantially rectangular shape in which a part of the outward projecting portion 65 is so-called pulled up and the periphery is cut out in a U-shape, and the head pressing portion 66 is provided. The outer projecting portion 65 is bent inward of the metal case 6 with the lower side of the rectangular shape as the center so that the thickness of the outward projecting portion 65 is increased. The upper side of the rectangular shape is a free end, and when the positional relationship is such that the head 71 of the metal pin 7 is sandwiched between the metal case 6 and the outer surface 32A as shown in FIG. The vicinity portion abuts on the head 71 and presses the head 71 in the direction of the outer surface 32 </ b> A of the connector insertion portion 3. As a result, the metal case 6 and the metal pin 7 are electrically connected. The head pressing portion 66 corresponds to a protruding portion.

  When the metal case 6 is unnecessary because the metal case 6 and the metal pin 7 are provided, and the metal case 6 and the metal pin 7 are configured separately and the metal pin 7 is fixed to the base portion 35A. As shown in FIG. 6, with the metal case 6 removed, the metal pin 7 may be pressed into the base portion 35A and fixed. By doing in this way, the modular jack 1 can be firmly fixed to the mounting board using the metal pin 7.

  Further, when the modular jack 1 is configured to have the main body 2, the metal case 6, and the metal pin 7, the metal case 6 and the metal pin 7 are electrically connected. The metal case 6 can function as a magnetic shield serving as a terminal.

  Since the metal pin 7 is disposed so as to be sandwiched between the metal case 6 and the side wall 32, the metal pin 7 and the metal case 6 can be reliably brought into contact with each other and can be reliably electrically connected. Further, the metal pin 7 can be fixed to the base portion 35A without rattling.

  In addition, since the outer protrusion 65 is provided with a head pressing portion 66 that protrudes toward the metal pin 7 so as to increase the thickness of the outer protrusion 65, the head pressing portion 66 is a metal pin. By pressing 7, the metal pin 7 and the metal case 6 can be more reliably brought into contact with each other and reliably connected. Further, the metal pin 7 can be fixed to the base portion 35A without rattling.

  In addition, since the head pressing portion 66 is configured such that a part of the metal case 6 is raised and raised, the head pressing portion 66 is a part of the metal case 6 and around the head pressing portion 66. Can be prevented from contacting. For this reason, the head pressing portion 66 can be provided with a spring property, the metal case 6 is more reliably brought into contact with the metal pin 7, and the metal pin 7 is pressed by the head pressing portion 66. The case 6 can be reliably electrically connected. Further, the metal pin 7 can be fixed to the base portion 35A without rattling.

  Further, since the outward projecting portion 65 and the metal pin 7 are sandwiched between the side wall 32 and the arm portion 35B of the lifting prevention piece 35, it is possible to prevent the outward projecting portion 65 from being separated from the side wall 32. The pin 7 and the metal case 6 can be more reliably brought into contact with each other and reliably connected. Further, the metal pin 7 can be fixed to the rattling portion without rattling.

  Further, since the metal pin 7 is fixed to the base portion 35A by being press-fitted into the pin through hole 35b, the metal pin 7 can be fixed to the base portion 35A without rattling.

  Further, since a plurality of pin through holes 35b are formed, the pin through holes 35b can be appropriately selected according to the positions of the through holes formed in the mounting substrate. For this reason, it is not necessary to manufacture the main body corresponding to the position of the through hole formed in the mounting board (not shown), and it can be used for general purposes, and the cost for manufacturing the modular jack 1 can be reduced. .

  Since the material of the metal case 6 and the material of the metal pin 7 are different, the metal case 6 can be made of a highly shielded material or an inexpensive material, and the metal pin 7 can be made wettable by solder. The metal pin 7 can be plated so that the wettability of the solder is high.

  The modular jack of the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made within the scope described in the claims. For example, in the present embodiment, the plug insertion hole 3a opens upward and the two pin through holes 35b are formed in the base portion 35A of one lifting prevention piece 35. However, the present invention is not limited to this shape and configuration. . For example, as shown in FIG. 7, the plug insertion hole 103a of the modular jack 101 may be opened forward, and only one pin through hole may be formed for the base portion 135A of one lifting prevention piece 135.

  Further, the metal pin 7 has penetrated the rear pin through hole 35b of the two pin through holes 35b, but is not limited to the rear pin through hole 35b. Depending on the mounting board, it may penetrate through the front pin through hole 35b.

  Moreover, the metal case 6 and the metal pin 7 may be comprised with the metal of a different material. For example, the metal case may be made of SUS material, aluminum alloy, stainless steel alloy or the like instead of brass. Moreover, although the tin plating was given to the metal pin 7, it is not limited to this, For example, it replaces with tin plating and the metal pin is immersed in the solder tank, and the solder has adhered to the surface of the metal pin. It may be a solder dip.

  Further, at the upper end of the head 71 of the metal pin 7 and facing the outward projecting portion 65 of the metal case 6 to be described later, a head slope 71A that is separated from the side wall 32 as it goes downward is provided. In addition, the upper surface of the arm portion 35B is provided with a slope 35D that is further away from the outer surface 32A toward the upper side. However, the slope is not limited to the slope, and for example, a circle having a predetermined radius instead of the slope. Other types of chamfers such as arc-shaped chamfers may be provided.

  Further, although the base portion 35A of the lifting prevention piece 35 is configured by the pin through hole 35b, it is not limited to the pin through hole. For example, what is necessary is just to be comprised by a groove | channel and the pin part 72 of the metal pin 7 can be inserted in a groove | channel.

  The head pressing portion 66 has a substantially rectangular shape in which a part of the outward projecting portion 65 is so-called pulled up and the periphery is cut out in a U-shape, and the head pressing portion 66 is provided. However, the present invention is not limited to this configuration, but is configured to be bent inward of the metal case 6 with the lower side of the rectangular shape as the center so that the thickness of the outward projecting portion 65 is increased. The protrusion part which protrudes in the direction of a metal pin should just be provided in a part of metal case.

  The modular jack of the present invention is particularly useful in the field of modular jacks to which LAN cables are connected.

DESCRIPTION OF SYMBOLS 1 Modular jack 2 Main-body part 3a Plug insertion hole 6 Metal case 7 Metal pin 35 Lifting prevention piece 35D Slope 35b Pin through-hole 65 Outward protrusion part 66 Head pressing part 71A Head slope

Claims (8)

A main body including a main body having a side wall formed with a plug insertion hole and a pin fixing portion provided on the side wall;
A metal case covering the body;
A metal pin configured separately from the metal case and fixed to the pin fixing portion,
When the metal case covers the body, the metal pin contacts the metal case and is electrically connected to the metal case ;
The metal pin is disposed so as to be sandwiched between the metal case and the side wall,
A modular jack characterized in that a part of the metal case is provided with a protruding part that protrudes in the direction of the metal pin . The modular jack according to claim 1, wherein the protruding portion is configured such that a part of the metal case is pulled out. A main body including a main body having a side wall formed with a plug insertion hole and a pin fixing portion provided on the side wall;
  A metal case covering the body;
  A metal pin configured separately from the metal case and fixed to the pin fixing portion,
  When the metal case covers the body, the metal pin contacts the metal case and is electrically connected to the metal case;
  The pin fixing portion is composed of an anti-lifting piece having an arm portion that is disposed opposite to the side wall and is immovable with respect to the side wall,
  The metal case is assembled by folding a metal plate, and has a flat plate portion that can contact the metal pin,
  The modular jack characterized in that the flat plate portion and the metal pin are sandwiched between the side wall and the arm portion of the lifting prevention piece. The floating prevention piece includes a base portion that connects the arm portion and the side wall, and a pin through hole into which the metal pin can be inserted is formed in the base portion,
  4. The modular jack according to claim 3, wherein the metal pin is fixed to the base portion by being press-fitted into the pin through hole. 5. The modular jack according to claim 4, wherein a plurality of the pin through holes are formed. The base is connected to one end of the arm;
  The chamfering is performed on the other end portion of the arm portion and facing the side wall so that the distance from the side wall becomes shorter as the end of the arm portion is approached. 4. The modular jack according to 4. The base is connected to one end of the arm;
  The metal pin has a base side portion fixed to the pin fixing portion and a free end side portion with respect to the base side portion, and the free end side portion is disposed to face the flat plate portion,
  5. The modular jack according to claim 4, wherein the free end side portion is chamfered such that a distance from the side wall becomes longer as the distance from the pin through hole is approached. The modular jack according to any one of claims 1 to 7, wherein a material of the metal case and a material of the metal pin are different.

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