JP2008130285A - Jack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small-sized jack that correctly maintains the mounting conditions of a hollow-columnar contact. <P>SOLUTION: The jack 10 is connected to a plug 9. A housing 1 has a plug storage 11 with a plug insertion port 1a open for setting the plug 9. A cover housing 2 1 slidably blocks the housing. Contacts 3, 4 have pressure-bonding units 31, 41 for bonding wires 3w, 4w, and contact units 32, 42 for connecting the plug 9. The contact unit 32 has a hollow column 3a, and the contact unit 42 has an elastic flexure 4a. The housing 1 is provided with a wire inserter 12, with the base terminals of the contact units 32, 42 that are bent and have extending wires 3w, 4w. The cover housing 2 has a lifted portion 21 lifted up from its inner wall toward the wire inserter 12 and extending substantially parallel to the sliding direction of the cover housing 2, and a projected strip 22, projecting from the lifted portion 21 to press the hollow column 3a against the plug insertion port 1a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a jack. In particular, the present invention relates to a jack structure that is used in portable electronic devices and the like and transmits electrical signals and energy.

  Many portable electronic devices are operated with direct current, and the voltage of a household AC power source is stepped down by an AC adapter and converted into direct current at the same time to be used as a power source for the portable electronic device. Many AC adapters use a cable with a plug, and the plug is inserted into a DC power jack provided in the portable electronic device to be electrically connected to supply DC power to the portable electronic device. .

  As an example of such a power jack, the jack includes a hollow pillar-shaped contact and a J-shaped contact, and these contacts and a dedicated electric wire are electrically joined by crimping. And these crimping parts are arranged in the housing of the jack which is hard to be exposed to mechanical deformation, and further, the structure is such that mechanical force is hard to act on these crimping parts by both electric wires extending from the jack. Jack has been invented (see, for example, Patent Document 1).

The jack according to Patent Document 1 described above is characterized in that it does not easily cause poor contact even when subjected to mechanical deformation during assembly or use.
JP 2003-332000 A

  In the jack according to Patent Document 1, a hollow pillar-shaped contact is arranged in the center of a plug housing chamber having a circular opening into which a plug is inserted. Then, a plug including a cylindrical inner terminal having an open end is inserted into the plug housing chamber, and the inner terminal and the hollow columnar contact are fitted.

  For example, a jack according to Patent Document 1 is used in a notebook computer and is mounted on a side panel of a computer main body to which a liquid crystal panel is connected so as to be opened and closed. On the other hand, in recent years, PDAs (Personal Digital Assistants) that are equipped with a liquid crystal panel and a connection terminal to the outside, have some of the functions of a personal computer, and are large enough to fit in the palm of the hand have become widespread. A DC power jack is mounted on the side panel of the PDA.

  The thickness of the main body of such a PDA is less than half the thickness of the computer main body of the notebook personal computer, and the jack is miniaturized. That is, the housing and contacts provided in the jack are reduced in size.

  However, if the housing, contacts, etc. provided in the jack are made smaller, it becomes difficult to maintain the posture of the hollow columnar contact, and it becomes difficult to insert the plug by tilting the contact. There is a need for a small jack that can maintain the posture of the hollow pillar-shaped contact correctly while utilizing the advantages of the jack disclosed in Patent Document 1. Furthermore, it is convenient to add a function for detecting that a plug has been inserted into such a small jack. The above can be said to be the subject of the present invention.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a small-sized jack that maintains the posture of a hollow pillar-shaped contact correctly and has a plug insertion detection function.

  The present inventors can maintain the posture of the contact by providing a protrusion for energizing the contact on the inner wall of the cover housing that closes the proximal end side of the hollow columnar contact, and further, the outer periphery of the plug It has been found that the insertion of a plug can be detected by providing a switch contact to be connected to a J-shaped contact that contacts the base, and based on this, the following new small jack has been invented.

  (1) A jack that is connected to a plug having a cylindrical inner terminal having an open end and a cylindrical outer terminal that surrounds the outer periphery of the inner terminal in an insulating manner, and into which the plug is inserted. From the direction perpendicular to the direction in which the plug is inserted, and the other surface of the housing facing the plug insertion port is formed in a substantially rectangular parallelepiped housing having a plug housing chamber for receiving the plug. A substantially plate-shaped cover housing that is slidably closed; a first contact disposed in the housing and connected to the inner terminal; and a second contact disposed in the housing and connected to the outer terminal; The first contact is provided on one end side for crimping the first electric wire, and the first contact is provided on the other end side and is accommodated in the plug accommodating chamber so that the inner terminal is A first contact portion that is inserted, and the second contact is provided on one end side of the second crimping portion for crimping the second electric wire, and provided on the other end side and faces the first contact portion. A second contact portion that contacts the outer terminal, wherein the first contact portion is provided with a hollow columnar portion located in the center of the plug housing chamber, and the second contact portion is formed of the plug housing chamber. An elastic bending piece projecting inside is provided, and the housing has an electric wire insertion portion through which the first electric wire and the second electric wire extend by refracting proximal ends of the first contact portion and the second contact portion. The cover housing protrudes from the inner wall toward the wire insertion portion and extends in a strip shape substantially parallel to the sliding direction of the cover housing, and protrudes from the protrusion to the hollow columnar shape of the first contact And a protrusion that presses the portion toward the plug insertion port.

  The jack according to the invention of (1) is connected to a plug having a cylindrical inner terminal whose tip is opened and a cylindrical outer terminal that surrounds the outer periphery of the inner terminal in an insulating manner. The jack according to the invention of (1) includes a substantially rectangular parallelepiped housing and a substantially plate-shaped cover housing. The housing has a plug accommodating chamber for receiving a plug by opening a plug insertion opening into which one of the plugs is inserted on one surface. The cover housing closes the other surface of the housing facing the plug insertion port so as to be slidable from a direction orthogonal to the direction in which the plug is inserted.

  The jack according to the invention of (1) includes a first contact and a second contact. The first contact is disposed on the housing and is connected to the inner terminal. The second contact is disposed on the housing and connects to the outer terminal. The first contact has a first crimping part and a first contact part. A 1st crimping | compression-bonding part is provided in the one end side of a 1st contact, and crimps | bonds a 1st electric wire. The first contact portion is provided on the other end side of the first contact, is accommodated in the plug accommodating chamber, and the inner terminal is inserted therein. The second contact has a second crimping portion and a second contact portion. A 2nd crimping | compression-bonding part is provided in the one end side of a 2nd contact, and crimps | bonds a 2nd electric wire. The second contact portion is provided on the other end side of the second contact, faces the first contact portion, and contacts the outer terminal.

  The first contact portion is provided with a hollow columnar portion located at the center of the plug housing chamber. The second contact portion is provided with an elastic bent piece protruding into the plug housing chamber. Further, the housing is provided with a wire insertion portion in which the base end portions of the first contact portion and the second contact portion are refracted and the first electric wire and the second electric wire extend. Furthermore, the cover housing is provided with a raised portion and a protrusion. The raised portion is raised from the inner wall toward the electric wire insertion portion, and extends in a strip shape substantially parallel to the sliding direction of the cover housing. The protrusion protrudes from the raised portion and presses the hollow columnar portion of the first contact toward the plug insertion opening.

  Here, the plug may be a connector attached to the tip of the cable in order to be electrically connected to the jack, and has a cylindrical inner terminal and an outer terminal formed of a conductive metal. A tip of the inner terminal may be opened, and a hollow columnar portion of the first contact can be inserted. The outer periphery of the inner terminal may be covered with an insulating synthetic resin and surrounded by the outer terminal. The outer terminal is in contact with the elastic bent piece of the second contact. The tip of the outer terminal may be opened, and the tip surface of the inner terminal and the tip surface of the outer terminal are preferably aligned.

  The plug may have a double tube structure in which the inner terminal and the outer terminal are concentrically arranged, and the proximal end side of the plug may be covered with an insulating synthetic resin, and the cable is extended. The base end side of the plug is gripped and inserted into and removed from the jack. Here, the plug may be a so-called straight type in which the cable extends in parallel with the axial direction of the inner terminal and the outer terminal, or so-called L in which the cable extends at a right angle to the axial direction of the inner terminal and the outer terminal. It may be a shape type.

  The housing and the cover housing may be insulative and are made of a non-conductive material. A non-conductive synthetic resin can be molded to obtain a housing and a cover housing having a desired shape. The housing and the cover housing are preferably made of the same material, but it is not excluded that they are made of different materials.

  Although the housing has a substantially rectangular parallelepiped shape, it does not exclude that an electric wire insertion portion described later protrudes from a part of the housing. Similarly, although the cover housing has a substantially plate shape, it does not exclude that a portion covering the electric wire insertion portion provided in the housing protrudes.

  For example, the housing may be formed in a rectangular shape on one side where the plug insertion opening is opened, and the other side of the housing facing the plug insertion opening is the same on both sides as the one side. Both sides are formed in a rectangular shape that is longer than both sides of the one surface. The side view of the housing is substantially L-shaped. First and second openings described later are opened on the other surface of the housing.

  The plug insertion opening may be an opening into which a plug is inserted from the outside of the housing, and one surface of the housing has an area or an outer shape for inserting the plug. For example, the plug insertion opening may be an opening that opens only when the plug is inserted, and the opening is sealed by a door coupled by a hinge, and the door opens in conjunction with the insertion of the plug. Can include an opening.

  The plug insertion port preferably has a shape that fits the outer terminal of the plug, and may be, for example, a circle or a rectangle including a regular square. When the plug insertion port is circular, the plug storage chamber may be a substantially cylindrical space, and when the plug insertion port is rectangular, the plug storage chamber may be a substantially rectangular parallelepiped space. The plug insertion port may be circular, and the plug housing chamber may be a substantially rectangular parallelepiped space.

  The one surface of the housing is the surface on the side where the plug is inserted. For example, this one surface may be exposed from the panel, and one surface other than the plug insertion port is shielded by this panel. May be. One surface may be a flat surface, and the case where irregularities are formed is also included in one surface. For example, a case where a cylindrical body having a circular plug insertion port as an inner circle is formed to protrude from one surface is also included in one surface. One surface may be referred to as a surface (front surface). Further, the other surface facing the plug insertion opening may be referred to as a back surface (back surface).

  The plug housing chamber may be a space for receiving a plug, may be a space for holding or housing the first and second contacts, and is formed in the housing. The first and second contact portions may be disposed in the plug housing chamber by insertion, holding, housing, etc., and the first and second contacts are connected by inserting the plug into the plug housing chamber.

  When the cover housing closes the other surface of the housing, at least the other surface of the housing is covered with the cover housing so that the other surface of the housing cannot be seen from the outside, or the other surface of the housing is electrically Incapable of physically or physically touching.

  A pair of slide grooves that open in opposite directions are provided on both wings on the other surface of the housing, and a pair of opposing guide pieces that are guided by these slide grooves are provided on the inner wall of the cover housing. The other surface of the housing can be slidably closed from the direction orthogonal to the direction in which it is applied. A pair of lances can be provided on both wings on the other surface of the housing, and a pair of locking holes for engaging these lances can be provided on the opposing inner walls of the cover housing to lock the cover housing to the housing.

  The first and second contacts and the third contact described later have conductivity, and a developed conductive metal plate is bent and formed to obtain a contact having a desired shape. The first to third contacts are preferably made of a material having excellent conductivity and extensibility such as a copper alloy, but is not limited to a copper alloy.

  The first and second electric wires and a third electric wire to be described later may be constituted by a conducting wire through which an electric current flows and a coating for insulating the conducting wire from the outside, and the conducting wire may be a single wire or a stranded wire. When the first to third electric wires are mixed with a single wire and a stranded wire, the efficiency of the crimping operation is not good, and it is preferable that the first to third electric wires are unified into one of the single wire and the stranded wire. By making the color of the coating different, for example, the polarity of the contact connected to the electric wire can be identified. And one end of these electric wires is crimped. Moreover, it does not exclude that one terminal of the electric wire comprised in a pair is crimped.

  The first and second crimping portions and the third crimping portion to be described later are provided with a conductor grip for crimping a conductor from which the coating of the end of the electric wire has been peeled, and an insulation grip for crimping the coating in the vicinity of the conductor. ing. Crimping an electric wire generally means that a crimp terminal is bent so that a part of a U-shaped crimp terminal wraps around a conductor and a coating, and the electric wire is fixed by plastic deformation. With this fixing, the conductor grip electrically and mechanically connects the conductive wires, and the insulation grip mechanically fixes the electric wire.

  After the first and second electric wires are respectively crimped to the first and second crimping portions, the first and second contacts are disposed on the housing. The first contact may be a so-called pin contact in which a hollow columnar portion is provided in the first contact portion on the other end side, and is arranged in the housing so that the hollow columnar portion is located in the center of the plug housing chamber. The The second contact may be a so-called bellows contact in which an elastic bent piece is provided in the second contact portion on the other end side, and is arranged in the housing so that the elastic bent piece protrudes into the plug housing chamber. The

  And the base end part of a 1st and 2nd contact part is refracted, and a 1st and 2nd electric wire extends from an electric wire insertion part. In addition, the 1st and 2nd electric wire is previously cut | disconnected by predetermined length from the 1st and 2nd crimping | compression-bonding part. Further, the electric wire insertion portion can include the other surface of the housing.

  In the cover housing, the fact that the raised portion is raised from the inner wall toward the electric wire insertion portion means that the raised portion is raised from the inner wall toward the proximal end portions of the first and second contact portions. When the cover housing is slid and the other surface of the housing is closed, the raised surface of the raised portion extending in a band shape faces the base ends of the first and second contact portions. The ridge may extend in an elongated shape and protrudes in a V shape from the ridge. The tip of the protrusion protruding in a V shape extends linearly in parallel with the raised portion and can abut on the base end surface of the first contact portion.

  For example, in a conventional jack applicable to a notebook computer, the base end portion of the hollow columnar contact has a large holding allowance by the housing, and the contact posture can be easily maintained. On the other hand, in the small jack according to the present invention applicable to the PDA, the base end portion of the first contact portion mainly composed of the hollow columnar portion has a very small holding allowance by the housing. Therefore, the deflection at the tip of the hollow columnar portion becomes large, that is, it is difficult to maintain the posture of the first contact.

  In the jack according to the invention of (1), a protrusion protrudes from the clearance between the protruding surface of the protruding portion provided in the cover housing and the base end portion of the hollow columnar portion, and the protrusion plugs the hollow columnar portion of the first contact. By pressing toward the insertion port, the posture of the first contact can be maintained.

  Thus, the jack according to the invention of (1) is provided with a protrusion on the inner wall of the cover housing that closes the proximal end side of the hollow columnar contact, and this protrusion presses the proximal end side of the hollow columnar contact. By doing so, a small jack that maintains the posture of the contact can be provided.

  (2) The housing includes a first storage chamber that stores the first contact portion, and a second storage chamber that stores the second contact portion, and the first storage chamber includes the first contact. A first opening into which the portion is inserted opens to the other surface of the housing and communicates with the plug housing chamber, and the second housing chamber has a second opening into which the second contact portion is inserted. The jack according to (1), which is open on the other surface of the housing and communicates with the plug housing chamber.

  In the jack according to the invention of (2), the housing has a first storage chamber and a second storage chamber. The first storage chamber stores the first contact portion, and the second storage chamber stores the second contact portion. The first storage chamber opens a first opening into which the first contact portion is inserted on the other surface of the housing. The first storage chamber communicates with the plug storage chamber. On the other hand, the second storage chamber opens a second opening into which the second contact portion is inserted on the other surface of the housing. Further, the second storage chamber communicates with the plug storage chamber.

  Here, the first opening may be opened in a circular shape so that the hollow columnar portion is inserted, and the first contact portion is inserted and held so as to be press-fitted into the first storage chamber. Around the first opening, first and second locking portions described later can be provided. The second opening may be opened in a rectangular shape so that the elastic bending piece is inserted, and the second storage chamber may include a pair of slits to be described later. The second storage chamber preferably has a bottom.

  After the first and second contact portions are accommodated in the first and second accommodation chambers, the proximal ends of the first and second contact portions are refracted, and the first and second electric wires extend to the wire insertion portion. Alternatively, the base end portions of the first and second contact portions may be refracted in advance, and the first and second contact portions may be accommodated in the first and second accommodation chambers.

  In the jack according to the invention of (2), the housing has a first storage chamber for storing the first contact portion and a second storage chamber for storing the second contact portion, and the first and second contacts. Can be easily assembled from the other side of the housing.

  (3) The first contact portion includes a pair of orthogonal pieces each including a short piece and a long piece in which a part of a base end portion of the hollow columnar portion extends in a direction orthogonal to the axial direction of the hollow columnar portion, And a counter piece that is refracted and further refracted so as to oppose the short piece and opposes the tip side of the hollow columnar part, and the first storage chamber includes the first storage chamber, A first locking portion that is provided around one opening and engages with the set of orthogonal pieces to suppress rotation about the main axis of the hollow columnar portion; and the long locking portion that is provided around the first opening. The jack according to (2), further including a second locking portion that engages with a part of the piece and stops the hollow columnar portion at a predetermined position.

  In the jack according to the invention of (3), the first contact portion has a pair of orthogonal pieces and opposing pieces. The pair of orthogonal pieces includes a short piece and a long piece. In the short piece and the long piece, a part of the base end portion of the hollow columnar portion extends in a direction perpendicular to the axial direction of the hollow columnar portion. The opposing piece is refracted so that the tip of the long piece of the orthogonal piece faces the short piece, and is further refracted to face the tip side of the hollow columnar part.

  In the jack according to the invention of (3), the first storage chamber has a first locking portion and a second locking portion. A 1st latching | locking part is provided in the circumference | surroundings of 1st opening, engages with a set of orthogonal piece, and suppresses the rotation centering on the main axis | shaft of a hollow columnar part. A 2nd latching | locking part is provided in the periphery of 1st opening, engages with a part of long piece, and stops a hollow columnar part in a predetermined position.

  For example, the first locking portion may include a set of standing walls whose corners partially form the first opening and orthogonal to the corners. Then, when the main axis of the hollow columnar portion tries to rotate in one direction, the orthogonal piece abuts on one of the standing walls and the rotation is suppressed. When the main axis of the hollow columnar portion tries to rotate in the other direction, the orthogonal piece comes into contact with the other standing wall and rotation is suppressed.

  The second locking portion can be a lance provided around the first opening. This lance may be provided with a slope at the tip, and may be provided with a step continuous with this slope, and is formed in a bowl shape. When the hollow columnar portion is inserted into the first opening, the long piece comes into contact with the slope of the lance, and the tip portion of the lance can be bent. When the hollow columnar part is completely inserted into the first opening, the lance is restored, the step is engaged with a part of the long piece, and the hollow columnar part can be stopped at a predetermined position.

  The fact that the ridge presses the hollow columnar portion toward the plug insertion opening corresponds to the pressing of the opposing piece facing the tip side of the hollow columnar portion. By providing a step on the facing piece so that the approach direction side of the ridge is lowered, the ridge can slide while pressing the facing piece.

  (4) A part of one end of the second contact portion is coupled to the proximal end portion of the second crimping portion, and the other end is coupled to the proximal end portion of the elastic bending piece to face the elastic bending piece. (2) or (3) having a rectangular back plate, wherein the second housing chamber guides both wings of the back plate and extends from the second opening toward the bottom of the second housing chamber. The listed jack.

  In the jack according to the invention of (4), the second contact portion has a rectangular back plate. A part of one end of the back plate is coupled to the base end portion of the second crimping portion. The other end of the back plate is coupled to the base end portion of the elastic bending piece and faces the elastic bending piece. In the jack according to the invention of (4), the second storage chamber has a pair of slits. The pair of slits guides both wings of the back plate and extends from the second opening toward the bottom of the second storage chamber.

  The second contact portion may be composed of a rectangular back plate and an elastic bent piece, and the longitudinal section is formed in a J shape. The back plate and the elastic bent piece may be coupled by a bent portion, and this bent portion ensures the return force due to the elasticity of the elastic bent piece.

  In the jack according to the invention of (4), the second storage chamber includes a pair of slits for guiding both wings of the back plate so as to guide the second contact portion to the second storage chamber. The pair of slits can restrict the movement of the back plate in one direction so that both wings of the back plate are inserted and the second contact portion is smoothly inserted into the housing. A contact lance may be provided on the back plate, and a locking hole that engages with the contact lance may be provided in the second storage chamber so that the second contact portion can be locked at a predetermined position.

  (5) A third contact disposed on the housing and connected to the second contact is further provided. The third contact is provided on one end side and provided on the other end side. A flat third contact portion that contacts the elastic bending piece, and when the plug is inserted into the plug housing chamber, the elastic bending piece is displaced and separated from the third contact portion (1) ) To (4).

  The jack according to the invention of (5) further includes a third contact. The third contact is disposed on the housing and is connected to the second contact. The third contact has a third crimping portion and a flat third contact portion. The third crimping portion is provided on one end side of the third contact and crimps the third electric wire. The third contact portion is provided on the other end side of the third contact and contacts the elastic bending piece. When the plug is inserted into the plug housing chamber, the elastic bending piece is displaced and separated from the third contact portion.

  Here, the third contact portion may be inserted from the second opening and is accommodated in the second accommodation chamber. The second storage chamber may be provided with a pair of slits for guiding both wings of the third contact portion. The third contact portion is guided by the pair of slits and is disposed in the housing adjacent to the second contact portion. Is done. The third electric wire can extend to the electric wire insertion part.

  It can be considered that the second contact and the third contact constitute a switch for detecting that a plug is inserted into the jack. When the plug is not inserted into the jack, the second contact and the third contact are in contact (ON). When the plug is inserted into the jack, the second contact and the third contact are in a disconnected (off) state.

  For example, a circuit for detecting the on / off state of the second contact and the third contact may be provided inside an electronic device including a jack according to the present invention, and a monitor lamp for indicating that a plug has been inserted into the jack is provided. It can also be provided in electronic equipment. The jack according to the invention of (5) is convenient because a function for detecting that a plug has been inserted into the jack is added.

  (6) The elastic bent piece of the second contact portion is mutually contradictory to the folded piece that extends toward the base end portion of the elastic bent piece by bending the distal end portion of the elastic bent piece, and both wings of the folded piece. A pair of contact pieces extending in the direction, and the third contact part is a relief part that is cut out in a rectangle from the distal end side to the proximal end side so that the elastic bending piece does not abut, and the relief part And a pair of contact portions that can contact the pair of contact pieces, and when the plug is inserted into the plug housing chamber, the pair of contact pieces are displaced from the pair of contact portions. The jack described in (5), which is separated.

  In the jack according to the invention of (6), the elastic bent piece of the second contact portion includes a folded piece and a pair of contact pieces. The folded piece extends toward the base end of the elastic bent piece with the distal end of the elastic bent piece bent. The pair of contact pieces extend in opposite directions to both wings of the folded piece.

  In the jack according to the invention of (6), the third contact portion includes a relief portion and a pair of contact portions. The escape portion is cut out in a rectangular shape from the distal end side to the proximal end side so that the elastic bending piece does not contact. The pair of contact portions are provided on both wings of the escape portion so that the pair of contact pieces can come into contact with each other. And if a plug is inserted in a plug storage chamber, a pair of contact piece will displace and will separate from a pair of contact part.

  Here, the folded piece may be bent at the tip end portion of the elastic bending piece, and extends between the back plate and the elastic bending piece toward the base end portion of the elastic bending piece. When the plug is not inserted into the jack, the elastic bending piece passes through the escape portion and protrudes into the plug housing chamber. When the plug is inserted into the jack, the elastic bending piece is displaced so as to retract, and the pair of contact pieces are separated from the pair of contact portions.

  It can be considered that the pair of contact pieces and the pair of contact portions constitute a switch for detecting that a plug is inserted into the jack. When no plug is inserted into the jack, the pair of contact pieces and the pair of contact portions are in an on state. When the plug is inserted into the jack, the pair of contact pieces and the pair of contact portions are in an off state.

  The jack according to the invention of (6) compactly accommodates the third contact serving as a switch terminal having a plug insertion detection function in the housing.

  The jack according to the present invention is provided with a protrusion on the inner wall of the cover housing that closes the base end side of the hollow pillar-shaped contact, and the protrusion presses the base end side of the hollow pillar-shaped contact. A small jack that maintains the posture can be provided.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is an exploded perspective view of a jack according to an embodiment of the present invention. FIG. 2 is a perspective external view of the jack according to the embodiment, and is a state diagram before the second contact is incorporated into the housing. FIG. 3 is a perspective external view of the jack according to the embodiment, and is a state diagram before the third contact is incorporated into the housing. FIG. 4 is a perspective external view of the jack according to the embodiment, and is a state diagram before the first contact is incorporated into the housing.

  FIG. 5 is a perspective external view of the jack according to the embodiment, and the jack having the first to third contacts incorporated in the housing is viewed from the other side. FIG. 6 is a perspective external view of the jack according to the embodiment, and is a state diagram before the cover housing is assembled into the housing. FIG. 7 is a perspective external view of the jack according to the embodiment, in which a cover housing is incorporated in the housing. FIG. 8 is a perspective external view of the jack according to the embodiment, and the jack is viewed from a different direction from FIG.

  FIG. 9 is a perspective external view of the jack according to the embodiment, and the jack is viewed from one side of the housing. FIG. 10 is a perspective external view of a cover housing provided in the jack according to the embodiment. FIG. 11 is a perspective external view of a housing provided in the jack according to the embodiment. FIG. 12 is a perspective external view of the second contact provided in the jack according to the embodiment, and the second contact is viewed from a direction different from FIG.

  FIG. 13 is a plan view of a housing provided in the jack according to the embodiment. 14A and 14B are views showing the first contact provided in the jack according to the embodiment, FIG. 14A is a plan view of the first contact, and FIG. 14B is a right side view of the first contact. 15A and 15B are views showing the second contact provided in the jack according to the embodiment, FIG. 15A is a plan view of the second contact, and FIG. 15B is a right side view of the second contact. 16A and 16B are views showing a third contact provided in the jack according to the embodiment, FIG. 16A is a plan view of the third contact, and FIG. 16B is a right side view of the third contact.

  FIG. 17 is a longitudinal sectional view of the jack according to the embodiment. FIG. 18 is a longitudinal sectional view of the jack according to the embodiment, showing a cross section taken along the line XX of FIG.

  Initially, the outline of the structure of the jack by this invention is demonstrated. In FIG. 1, a jack 10 is connected to a plug 9. The plug 9 includes a cylindrical inner terminal 91 having an open end, and a cylindrical outer terminal 92 that surrounds the outer periphery of the inner terminal 91 in an insulating manner. 1 and 6, the jack 10 includes a substantially rectangular parallelepiped housing 1 and a substantially plate-shaped cover housing 2.

  In FIG. 1, the housing 1 has a plug insertion opening 1 a into which a plug 9 is inserted opened on one surface 1 aa (see FIG. 9). The housing 1 has a plug housing chamber 11 for receiving the plug 9 (see FIG. 9 or FIG. 17). The cover housing 2 closes the other surface 1bb of the housing 1 facing the plug insertion port 1a so as to be slidable from a direction perpendicular to the direction in which the plug 9 is inserted (see FIG. 9).

  In FIG. 1 or FIG. 17, the jack 10 includes a first contact 3 and a second contact 4. The first contact 3 is disposed in the housing 1 and connected to the inner terminal 91. The second contact 4 is disposed on the housing 1 and connected to the outer terminal 92.

  In FIG. 1, the first contact 3 has a first crimping part 31 and a first contact part 32. The 1st crimping | compression-bonding part 31 is provided in the one end side of the 1st contact 3, and crimps | bonds the 1st electric wire 3w (refer FIG. 4). The 1st contact part 32 is provided in the other end side of the 1st contact 3, is accommodated in the plug accommodating chamber 11, and the inner side terminal 91 is inserted (refer FIG. 9 or FIG. 17).

  In FIG. 1, the second contact 4 has a second crimping part 41 and a second contact part 42. The 2nd crimping | compression-bonding part 41 is provided in the one end side of the 2nd contact 4, and crimps | bonds the 2nd electric wire 4w (refer FIG. 12). The second contact portion 42 is provided on the other end side of the second contact 4, faces the first contact portion 32, and contacts the outer terminal 92 (see FIG. 17).

  In FIG. 1, the first contact portion 32 is provided with a hollow columnar portion 3a located in the center of the plug housing chamber 11 (see FIGS. 17 and 18). The second contact portion 42 is provided with an elastic bending piece 4a that protrudes into the plug housing chamber 11 (see FIG. 17).

  Further, in FIG. 1, the housing 1 has an electric wire insertion portion in which the proximal end portion of the first contact portion 32 and the proximal end portion of the second contact portion 42 are refracted so that the first electric wire 3 w and the second electric wire 4 w extend. 12 is provided (see FIG. 5).

  Furthermore, as shown in FIG. 10, the cover housing 2 is provided with a raised portion 21 and a protrusion 22. The raised portion 21 is raised from the inner wall toward the wire insertion portion 12 and extends in a strip shape substantially parallel to the sliding direction of the cover housing 2 (see FIG. 1). The protrusion 22 protrudes from the raised portion 21 and presses the hollow columnar portion 3a of the first contact 3 toward the plug insertion port 1a (see FIG. 18).

  In FIG. 1 or FIG. 17, the jack 10 further includes a third contact 5. The third contact 5 is disposed in the housing 1 and connected to the second contact 4. In FIG. 1, the third contact 5 has a third crimping part 51 and a flat third contact part 52. The third crimping portion 51 is provided on one end side of the third contact 5 and crimps the third electric wire 5w. The 3rd contact part 52 is provided in the other end side of the 3rd contact 5, and contacts the elastic bending piece 4a (refer FIG. 17). When the plug 9 is inserted into the plug housing chamber 11, the elastic bending piece 4 a is displaced and separated from the third contact portion 52.

  1 or 2, the housing 1 has a first storage chamber 13 and a second storage chamber 14. The 1st storage chamber 13 has accommodated the 1st contact part 32 (refer FIG. 17). The second storage chamber 14 stores the second contact portion 42 and the third contact portion 52 (see FIG. 17).

  In FIG. 1 or FIG. 4, the first storage chamber 13 opens a first opening 13 a into which the first contact portion 32 is inserted into the other surface 1 bb of the housing 1. The first storage chamber 13 communicates with the plug storage chamber 11 (see FIG. 17). On the other hand, in FIG. 1 or FIG. 2, the second storage chamber 14 opens the second opening 14 a into which the second contact portion 42 is inserted in the other surface 1 bb of the housing 1. The second storage chamber 14 communicates with the plug storage chamber 11 (see FIG. 17).

  In FIG. 4, the first contact portion 32 has a pair of orthogonal pieces 3bc and a counter piece 3e. The pair of orthogonal pieces 3bc includes a short piece 3b and a long piece 3c. The short piece 3b and the long piece 3c extend in a direction in which a part of the base end portion of the hollow columnar portion 3a is orthogonal to the axial direction of the hollow columnar portion 3a. ing. The opposing piece 3e is refracted so that the tip of the long piece 3c of the orthogonal piece 3bc faces the short piece 3b to form a short piece 3d, and further, the short piece 3d is refracted to be connected to the tip side of the hollow columnar part 3a. Opposite.

  On the other hand, in FIGS. 4 and 13, the first storage chamber 13 has a first locking part 131 and a second locking part 132. The 1st latching | locking part 131 is provided in the periphery of the 1st opening 13a, engages with a set of orthogonal piece 3bc, and suppresses the rotation centering on the main axis | shaft of the hollow columnar part 3a. The 2nd latching | locking part 132 is provided in the periphery of the 1st opening 13a, engages with a part of long piece 3c, and stops the hollow columnar part 3a in a predetermined position.

  In FIG. 2, the second contact portion 42 has a rectangular back plate 4 b. A part of one end of the back plate 4 b is coupled to the base end portion of the second crimping portion 41. The other end of the back plate 4b is coupled to the base end of the elastic bending piece 4a and faces the elastic bending piece 4a (see FIG. 12). In FIG. 13, the second storage chamber 14 has a pair of slits 141 and 142. The pair of slits 141 and 142 guides both wings of the back plate 4b and extends from the second opening 14a toward the bottom of the second storage chamber 14.

  In FIG. 12, the elastic bending piece 4a of the second contact portion 42 includes a folded piece 4c and a pair of contact pieces 4d and 4e. The folded piece 4c extends toward the base end of the elastic bent piece 4a with the distal end of the elastic bent piece 4a bent. The pair of contact pieces 4d and 4e extend in directions opposite to each other on both wings of the folded piece 4c. The folded piece 4c has a bent end portion of the elastic bending piece 4a and extends between the back plate 4b and the elastic bending piece 4a toward the base end portion of the elastic bending piece 4a.

  On the other hand, in FIG. 3, the third contact portion 52 includes a relief portion 5a and a pair of contact portions 5d and 5e. The escape portion 5a is cut out in a rectangular shape from the distal end side to the proximal end side so that the elastic bending piece 4a does not contact (see FIG. 17). The pair of contact portions 5d and 5e are provided on both wings of the escape portion 5a so that the pair of contact pieces 4d and 4e can come into contact with each other (see FIG. 12). When the plug 9 is inserted into the plug housing chamber 11, the pair of contact pieces 4d and 4e are displaced and separated from the pair of contact portions 5d and 5e (see FIG. 1).

  Next, details of the configuration of the jack according to the present invention will be described. In FIG. 1, a plug 9 may be a connector attached to the end of a cable for electrical connection with a jack 10, and includes a cylindrical inner terminal 91 and an outer terminal 92 made of conductive metal. Have. The inner terminal 91 has an open end, and the hollow columnar portion 3a of the first contact 3 can be inserted. The outer periphery of the inner terminal 91 is covered with an insulating synthetic resin and is surrounded by the outer terminal 92. The elastic terminal 4 a of the second contact 4 is in contact with the outer terminal 92. The distal end of the outer terminal 92 is opened, and the distal end surface of the inner terminal 91 and the distal end surface of the outer terminal 92 are aligned.

  In FIG. 1, the plug 9 has a double tube structure in which an inner terminal 91 and an outer terminal 92 are arranged concentrically. The base end side of the plug 9 is covered with an insulating synthetic resin, and a cable (not shown) is extended. Then, the proximal end side of the plug 9 is gripped and inserted into and removed from the jack 10.

  In FIG. 1 or FIG. 11, the housing 1 has a substantially rectangular parallelepiped shape, but the electric wire insertion portion 12 protrudes from a part of the housing 1. In FIG. 1, the cover housing 2 has a substantially plate shape, but a portion covering the wire insertion portion 12 provided in the housing 1 protrudes (see FIG. 10).

  As shown in FIG. 9, the housing 1 has a rectangular surface 1 aa with a plug insertion opening 1 a opened. In FIG. 9, the other surface 1bb of the housing 1 facing the plug insertion port 1a is a rectangle in which one side is the same as the one surface 1aa and the other side is longer than both sides of the one surface 1aa. It is formed (see FIG. 13). The side view of the housing 1 is substantially L-shaped (see FIG. 1). A first opening 13 a and a second opening 14 a are opened on the other surface 1 bb of the housing 1.

  9, one surface 1aa of the housing 1 is a surface on the side where the plug 9 is inserted, and the one surface 1aa may be exposed from a panel (not shown) of the electronic device. One surface 1aa other than 1a may be shielded by this panel. The jack 10 can be attached to, for example, a divided panel using a pair of grooves 1p and 1p formed on both wings of one surface 1aa.

  In FIG. 17, the plug housing chamber 11 may be a space for receiving the plug 9 or a space for housing the first contact 3 and the second contact 4 and is formed in the housing 1 (FIG. 1). reference). By inserting the plug 9 into the plug housing chamber 11, the first contact 3 and the second contact 4 are connected (see FIG. 1).

  In FIG. 11, the housing 1 is provided with a pair of slide grooves 12a and 12b that open in opposite directions on both wings of the other surface 1bb (see FIG. 8). Further, the wire insertion portion 12 is provided with a pair of slide grooves 12 c and 12 d that are opened in opposite directions on both wings of the protruding portion of the wire insertion portion 12.

  On the other hand, in FIG. 11, the cover housing 2 is provided with a pair of opposed guide pieces 22a and 22b guided by the pair of slide grooves 12a and 12b on the inner wall on one end side (FIGS. 8 and 10). reference). The cover housing 2 is provided with a pair of opposing guide pieces 22c and 22d guided by the pair of slide grooves 12c and 12d on the inner wall on the other end side. The cover housing 2 can slidably close the other surface 1bb of the housing 1 from a direction orthogonal to the direction in which the plug 9 is inserted.

  In FIG. 13, a pair of lances 12e and 12f are provided on both wings of the other surface 1bb of the housing 1 (see FIGS. 1 and 11). On the other hand, a pair of locking holes 22e and 22f that engage with the pair of lances 12e and 12f are provided in the opposing inner walls of the cover housing 2. The pair of lances 12e and 12f are engaged with the pair of locking holes 22e and 22f, so that the cover housing 2 can be locked to the housing 1.

  14 to 16, the first to third contacts 3, 4, 5 have conductivity, and a developed conductive metal plate is bent to obtain a contact having a desired shape. In FIG. 1, the first to third electric wires 3w, 4w, and 5w are constituted by a conducting wire through which a current flows and a coating that insulates the conducting wire from the outside.

  In FIG. 14, the first crimping portion 31 is provided with a conductor grip 3g1 for crimping the conducting wire from which the coating of the end of the electric wire is peeled off. The first crimping portion 31 is provided with an insulation grip 3g2 for crimping the coating near the conductor. After the 1st electric wire 3w is crimped | bonded by the 1st crimping | compression-bonding part 31, the 1st contact 3 is arrange | positioned at the housing 1 (refer FIG. 1).

  Similarly, in FIG. 15, the second crimping portion 41 is provided with a conductor grip 4g1 and an insulation grip 4g2. After the 2nd electric wire 4w is crimped | bonded by the 2nd crimping | compression-bonding part 41, the 2nd contact 4 is arrange | positioned at the housing 1 (refer FIG. 1). In FIG. 16, the third crimping portion 51 is provided with a conductor grip 5g1 and an insulation grip 5g2. After the 3rd electric wire 5w is crimped | bonded by the 3rd crimping | compression-bonding part 51, the 3rd contact 5 is arrange | positioned at the housing 1 (refer FIG. 1).

  In FIG. 13, the 1st opening 13a is opened circularly so that the hollow columnar part 3a may be inserted (refer FIG. 4). In FIG. 4, the first contact portion 32 is inserted and held so as to be press-fitted into the first storage chamber 13. In FIG. 13, a first locking part 131 and a second locking part 132 are provided around the first opening 13a. The 2nd opening 14a is opened in the rectangle so that the elastic bending piece 4a may be inserted (refer FIG. 2). The second storage chamber 14 can include a pair of slits 141 and 142 (see FIG. 13).

  In FIG. 4, the first locking portion 131 may include a pair of standing walls 1w1 and 1w2 whose corners partially form the first opening 13a and orthogonal to the corners. When the main axis of the hollow columnar portion 3a attempts to rotate in one direction, the short piece 3b of the orthogonal piece 3bc comes into contact with the one standing wall 1w1 and rotation is suppressed. When the main axis of the hollow columnar portion 3a tries to rotate in the other direction, the long piece 3c of the orthogonal piece 3bc comes into contact with the other standing wall 1w2 and rotation is suppressed.

  In FIG. 4, the 2nd latching | locking part 132 can be used as the lance provided in the periphery of the 1st opening 13a. The lance may be provided with a slope at the tip, and may be provided with a step which is continuous with the slope, and is formed in a bowl shape. When the hollow columnar portion 3a is inserted into the first opening 13a, the long piece 3c comes into contact with the slope of the lance, and the tip portion of the lance can be bent. When the hollow columnar portion 3a is completely inserted into the first opening 13a, the lance is restored, the step is engaged with a part of the long piece 3c, and the hollow columnar portion 3a can be stopped at a predetermined position (see FIG. 18). ).

  In FIG. 12, the second contact portion 42 is composed of a rectangular back plate 4b and an elastic bent piece 4a, and has a J-shaped longitudinal section (see FIG. 15). The back plate 4b and the elastic bent piece 4a are coupled by a bent portion 4f, and the bent portion 4f ensures the return force due to the elasticity of the elastic bent piece 4a.

  In FIG. 2, the second storage chamber 14 includes a pair of slits 141 and 142 that guide both wings of the back plate 4 b so as to guide the second contact portion 42 to the second storage chamber 14 (see FIG. 13). . The pair of slits 141 and 142 can restrict the movement of the back plate 4b in one direction so that both blades of the back plate 4b are inserted and the second contact portion 42 is smoothly inserted into the housing 1.

  In FIG. 2, a contact lance 4r is provided on the back plate 4b. The second storage chamber 14 is provided with a locking hole 1h that engages with the contact lance 4r (see FIG. 17). By providing the contact lance 4r and the locking hole 1h, the second contact portion 42 can be locked at a predetermined position (see FIG. 17).

  In FIG. 3, the third contact portion 52 is inserted from the second opening 14 a and is accommodated in the second accommodation chamber 14. The second storage chamber 14 is provided with a pair of slits 143 and 144 for guiding both wings of the third contact portion 52 (see FIG. 13). The third contact portion 52 is guided by the pair of slits 143 and 144 and is disposed in the housing 1 adjacent to the second contact portion 42. The third contact part 52 can come into contact with the bottom of the second storage chamber 14 and stop at a predetermined position. The third electric wire 5w extends to the electric wire insertion portion 12.

  Next, the assembly procedure of the jack according to the present invention will be described. As shown in FIG. 1, the first to third electric wires 3w, 4w, and 5w are crimped to the first to third crimping portions 31, 41, and 51 of the first to third contacts 3, 4, and 5 in advance. Keep it. The first to third electric wires 3w, 4w, and 5w are cut in advance from the first to third crimping portions 31, 41, and 51 to a predetermined length.

  First, as shown in FIG. 2, the second contact portion 42 of the second contact 4 is inserted into the second storage chamber 14 from the second opening 14a side. FIG. 3 shows a state in which the second contact 4 is inserted and fixed to the housing 1, and the second electric wire 4 w after the second crimping portion 41 extends from the electric wire insertion portion 12.

  Next, as shown in FIG. 3, the third contact portion 52 of the third contact 5 is inserted into the second storage chamber 14 from the second opening 14a side. FIG. 4 shows a state in which the third contact 5 is inserted and fixed to the housing 1, and the third electric wire 5 w after the third crimping portion 51 extends from the electric wire insertion portion 12.

  Next, as shown in FIG. 4, the first contact portion 32 of the first contact 3 is inserted into the first storage chamber 13 from the first opening 13 a side. FIG. 5 shows a state in which the first contact 3 is inserted and fixed to the housing 1, and the first electric wire 3 w after the first crimping portion 31 extends from the electric wire insertion portion 12.

  Next, as shown in FIG. 6, the housing 1 and the cover housing 2 are arranged so that the first to third electric wires 3 w, 4 w, and 5 w are taken into the cover housing 2. Then, the housing 1 and the cover housing 2 are brought close to each other, and the cover housing 2 is slid onto the housing 1.

  7 or 8, the cover housing 2 includes a pair of guide pieces 22a and 22b and a pair of guide pieces 22c and 22d guided by the pair of slide grooves 12a and 12b and the pair of slide grooves 12c and 12d. The other surface 1bb is closed (see FIG. 1). It can also be said that the cover housing 2 closes the second contact 4 and the third contact 5 and holds them in the housing 1. 7 or 8, the pair of lances 12e and 12f are engaged with the pair of locking holes 22e and 22f, and the housing 1 locks the cover housing 2.

  Next, the operation of the jack according to the present invention will be described. 7 or 8, the first to third electric wires 3w, 4w, and 5w after the first to third crimping portions 31, 41, and 51 surrounded by the housing 1 and the cover housing 2 are extended out of the jack 10. (See FIG. 1).

  Thus, in the jack according to the present invention, the electric wires 3w, 4w, and 5w in the vicinity of the first to third crimping portions 31, 41, and 51 are not easily subjected to mechanical deformation from the outside. At the same time, it has a structure capable of shielding physical and electrical contact from the outside. In particular, it is considered that the first to third pressure-bonding parts 31, 41, 51 are visually shielded during use, which gives the user a sense of safety.

  In FIG. 9, a round opening opened substantially at the center of one surface 1aa of the housing 1 is a plug insertion slot 1a into which the outer terminal 92 of the plug 9 connected to the jack is inserted. The tip of the hollow columnar portion 3a of the first contact 3 can be seen from the plug insertion opening 1a. Further, the elastic bent piece 4a of the second contact 4 is visible from the opening of the second storage chamber 14 (see FIG. 1).

  In the jack according to the present invention, the first contact and the second contact can be used in the relationship of positive and negative or positive and ground, respectively. The jack according to the present invention can be assembled or disassembled at any time. For example, it is possible to disengage the lance and disassemble each component in the reverse procedure described above.

  In FIG. 17 or FIG. 18, the protrusion 22 protrudes in the clearance between the raised surface of the raised portion 21 provided on the cover housing 2 and the proximal end portion of the hollow columnar portion 3a. The ridge 22 presses the hollow columnar portion 3a of the first contact 3 toward the plug insertion port 1a, whereby the posture of the first contact 3 can be maintained.

  More specifically, in FIG. 17, the posture of the first contact 3 can be maintained by pressing the facing piece 3e facing the tip side of the hollow columnar portion 3a (see FIG. 4). In FIG. 17, a step is provided on the facing piece 3 e so that the approaching direction side of the protrusion 22 is lowered, and the protrusion 22 can slide while pressing the facing piece 3 e.

  The jack according to the present invention is provided with a protrusion on the inner wall of the cover housing that closes the base end side of the hollow pillar-shaped contact, and the protrusion presses the base end side of the hollow pillar-shaped contact. A small jack that maintains the posture can be provided.

  In the jack according to the present invention, it can be considered that the second contact and the third contact constitute a switch for detecting that a plug is inserted into the jack. When no plug is inserted into the jack, the second contact and the third contact are in the on state. When the plug is inserted into the jack, the second contact and the third contact are off.

  More specifically, in FIG. 17, the folded piece 4c of the second contact 4 has a bent end portion of the elastic bent piece 4a, and the elastic bent piece 4a is interposed between the back plate 4b and the elastic bent piece 4a. It extends toward the base end (see FIG. 4). When the plug 9 is not inserted into the jack 10, the elastic bending piece passes through the escape portion 5a and protrudes into the plug accommodating chamber 11 (see FIGS. 1 and 3). When the plug 9 is inserted into the jack 10, the elastic bending piece 4 a is displaced so as to be retracted, and the pair of contact pieces 4 d and 4 e of the second contact 4 becomes a pair of contact portions 5 d and 5 e of the third contact 5. (See FIGS. 1 and 3).

  The jack according to the present invention is convenient because a function of detecting that a plug is inserted into the jack is added. In particular, the jack according to the invention compactly accommodates the third contact serving as a switch terminal having a plug insertion detection function in the housing.

  The jack according to the present invention may be used for a small portable electronic device such as a PDA, and can provide a small jack having a function of detecting the insertion of a plug while correctly maintaining the attitude of the hollow columnar contact.

1 is a perspective exploded view of a jack according to an embodiment of the present invention. FIG. FIG. 4 is a perspective external view of the jack according to the embodiment, and is a state diagram before a second contact is incorporated into a housing. FIG. 6 is a perspective external view of the jack according to the embodiment, and is a state diagram before a third contact is incorporated into a housing. FIG. 4 is a perspective external view of the jack according to the embodiment, and is a state diagram before a first contact is incorporated into a housing. FIG. 2 is a perspective external view of the jack according to the embodiment, in which the jack in which the first to third contacts are incorporated in the housing is viewed from the other surface. FIG. 3 is a perspective external view of the jack according to the embodiment, and is a state diagram before the cover housing is assembled into the housing. FIG. 3 is a perspective external view of the jack according to the embodiment, and is a state diagram in which a cover housing is incorporated in the housing. FIG. 8 is a perspective external view of the jack according to the embodiment, and the jack is viewed from a different direction from FIG. 7. FIG. 2 is a perspective external view of the jack according to the embodiment, and the jack is viewed from one side of the housing. FIG. 3 is a perspective external view of a cover housing provided in the jack according to the embodiment. FIG. 3 is a perspective external view of a housing provided in the jack according to the embodiment. FIG. 3 is a perspective external view of a second contact provided in the jack according to the embodiment, and the second contact is viewed from a direction different from FIG. 1. It is a top view of the housing with which the jack by the embodiment is equipped. It is a figure which shows the 1st contact with which the jack by the said embodiment is equipped, FIG. 14 (A) is a top view of a 1st contact, FIG.14 (B) is a right view of a 1st contact. It is a figure which shows the 2nd contact with which the jack by the said embodiment is equipped, FIG. 15 (A) is a top view of a 2nd contact, FIG.15 (B) is a right view of a 2nd contact. It is a figure which shows the 3rd contact with which the jack by the said embodiment is equipped, FIG. 16 (A) is a top view of a 3rd contact, FIG.16 (B) is a right view of a 3rd contact. It is a longitudinal cross-sectional view of the jack by the said embodiment. It is a longitudinal cross-sectional view of the jack by the said embodiment, and has shown the XX arrow cross section of FIG.

Explanation of symbols

1 Housing 1a Plug insertion port 1aa One surface (one surface of the housing)
1bb The other side (the other side of the housing)
DESCRIPTION OF SYMBOLS 2 Cover housing 3 1st contact 3a Hollow columnar part 3w 1st electric wire 4 2nd contact 4a Elastic bending piece 4w 2nd electric wire 5 3rd contact 5w 3rd electric wire 9 Plug 10 Jack 11 Plug accommodation chamber 12 Electric wire insertion part 21 Protrusion part 22 ridge 31 first crimping portion 32 first contact portion 41 second crimping portion 42 second contact portion 51 third crimping portion 52 third contact portion 91 inner terminal 92 outer terminal

Claims (6)

A jack connected to a plug having a cylindrical inner terminal with an open end and a cylindrical outer terminal surrounding the outer periphery of the inner terminal in an insulating manner,
A substantially rectangular parallelepiped housing having a plug insertion opening into which one of the plugs is inserted and having a plug housing chamber for receiving the plug;
A substantially plate-shaped cover housing that slidably closes the other surface of the housing facing the plug insertion port from a direction perpendicular to the direction in which the plug is inserted;
A first contact disposed in the housing and connected to the inner terminal;
A second contact disposed in the housing and connected to the outer terminal,
The first contact is provided on one end side for crimping the first electric wire, the first contact part is provided on the other end side and is accommodated in the plug accommodating chamber, and the inner terminal is inserted therein; Have
The second contact is provided on one end side for crimping the second electric wire, and on the other end side, the second contact portion facing the first contact portion and contacting the outer terminal, Have
The first contact portion is provided with a hollow columnar portion located at the center of the plug housing chamber,
The second contact portion is provided with an elastic bending piece protruding into the plug housing chamber,
The housing is provided with a wire insertion portion in which the first electric wire and the second electric wire extend by being refracted at the base end portion of the first contact portion and the second contact portion,
The cover housing bulges from the inner wall toward the wire insertion portion and extends in a strip shape substantially parallel to the sliding direction of the cover housing, and the hollow columnar portion of the first contact protruding from the bulge portion is plugged. A jack provided with a ridge that presses toward the insertion port. The housing has a first storage chamber for storing the first contact portion, and a second storage chamber for storing the second contact portion,
The first storage chamber opens a first opening into which the first contact portion is inserted into the other surface of the housing, and communicates with the plug storage chamber.
2. The jack according to claim 1, wherein the second accommodation chamber opens a second opening into which the second contact portion is inserted into the other surface of the housing and communicates with the plug accommodation chamber. The first contact portion includes a pair of orthogonal pieces each including a short piece and a long piece in which a part of a base end portion of the hollow columnar portion extends in a direction orthogonal to the axial direction of the hollow columnar portion, and A long piece having a tip that is refracted so as to face the short piece and further refracted to face the tip side of the hollow columnar part,
The first storage chamber is provided around the first opening, engages with the set of orthogonal pieces, and suppresses rotation about the main axis of the hollow columnar portion; and The jack according to claim 2, further comprising: a second locking portion provided around one opening and engaging with a part of the long piece to stop the hollow columnar portion at a predetermined position. The second contact portion has a rectangular back that has one end coupled to the proximal end of the second crimping portion and the other end coupled to the proximal end of the elastic bent piece and facing the elastic bent piece. Has a face plate,
4. The jack according to claim 2, wherein the second storage chamber has a pair of slits that guide both wings of the back plate and that extend from the second opening toward the bottom of the second storage chamber. A third contact disposed on the housing and connected to the second contact;
The third contact has a third crimping portion provided on one end side for crimping the third electric wire, and a flat plate-like third contact portion provided on the other end side and in contact with the elastic bending piece,
The jack according to any one of claims 1 to 4, wherein when the plug is inserted into the plug housing chamber, the elastic bending piece is displaced and separated from the third contact portion. The elastic bent piece of the second contact portion extends in a direction opposite to each other on a folded piece that extends toward a base end portion of the elastic bent piece by bending a distal end portion of the elastic bent piece. A pair of contact pieces,
The third contact portion is provided on a flank portion that is cut out in a rectangular shape from the distal end side to the proximal end side so that the elastic bending piece does not contact, and the pair of contact pieces are provided on both wings of the flank portion. A pair of contact parts capable of contacting,
The jack according to claim 5, wherein when the plug is inserted into the plug housing chamber, the pair of contact pieces are displaced from the pair of contact portions.

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