JP4394546B2 - Jack - Google Patents

Description

  The present invention relates to a jack for transmitting electrical signals and energy used in portable electronic devices such as notebook computers, and more particularly to the structure of a housing, a contact, etc. used in the jack.

  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 has a hollow pillar-shaped contact and a J-shaped contact, and these both contacts and a dedicated lead wire are electrically bonded by pressure bonding. A jack was invented in which the crimping part was placed in the jack housing which is not subject to mechanical deformation, and the mechanical force was not exerted on both the crimping parts by both lead wires extending from the jack. (For example, refer to 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

FIG. 16 is a perspective external view of a conventional jack according to the invention of Patent Document 1. FIG. FIG. 16 of the present application corresponds to FIG. In FIG. 16 , the jack 90 includes an insulating housing 91, a hollow pillar-shaped contact 92, a J-shaped contact 93, and a cover 94. A plug connection opening into which the mating plug is inserted is formed on the surface 9a of the housing 91, and the housing 91 includes a contact insertion chamber having the plug connection opening as an opening. Further, a contact insertion opening communicating with the contact insertion chamber is opened on the back surface 9 b of the housing 91.

  Dedicated lead wires 92w and 93w are crimped to the pair of contacts 92 and 93, respectively. The contact 92 is inserted into a first insertion chamber 921 that communicates with the contact insertion chamber. The contact 93 is inserted into a second insertion chamber 931 that communicates with the contact insertion chamber. The lead wires 92w and 93w extend along lead wire insertion grooves 920 and 930 formed in a direction orthogonal to the insertion direction of the contacts 92 and 93, respectively.

  In FIG. 16, both sides 942 and 943 of the cover 94 can be slid from the direction of the first side surface 9 c while being guided by a pair of opposing guide grooves 923 and 933 formed on the back surface 9 b of the housing 91. The cover 94 attached to the back surface 9b of the housing 91 prevents the contacts 92 and 93 from popping out when the mating plug is inserted.

  In the jack 90 shown in FIG. 16, lead wires 92w and 93w extend in a direction orthogonal to the direction in which the mating plug is inserted. Further, the jack 90 shown in FIG. 16 has a slit 91 s formed around the surface side of the housing 91. The divided panel which becomes the mounting hole of the housing 91 enters the slit 91s and closes, whereby the jack 90 is fixed to the panel.

  However, depending on the internal configuration of the device to which the jack is attached, it may be required that the lead wire to be crimped to the contact is extended in a direction extending from the direction in which the counterpart plug is inserted. Furthermore, a notch is formed in the first side surface from the back surface of the jack toward the front surface, and the nut is held so as not to rotate, and the jack is fixed to the device (in many cases, a panel) by this nut. May be required.

  A jack that meets such requirements is required to have a structure that is unlikely to cause poor contact even when subjected to mechanical deformation during assembly or use, as with conventional jacks. In particular, it is required that the contact does not move even when the mating plug is inserted. Furthermore, it is required that the nut does not move after the assembly of the jack. In addition, the assembly of the jack is required to be simple.

  In order to solve the above-described problems, an object of the present invention is to provide a jack having an easily assembled structure in which a contact for electrical connection and a nut for fixing to a device are securely held in a housing.

  In order to satisfy the above-mentioned object, the inventor has a structure in which the extending surface of the lead wire to which the contact is crimped (the back surface of the jack) and the notch groove in which the nut is held are covered with a cover configured in a substantially L shape, In addition, the cover can be easily mounted from the back side of the jack, and the following new jack has been invented.

(1) open on one side plug insertion opening mating plug is inserted, the contact insertion chamber for the opening of the plug insertion opening, and the contact insertion is provided on the other surface facing the plug insertion opening and insulating housing having a substantially rectangular parallelepiped shape having a contact insertion opening communicating with the chamber, has a crimp section for connecting with a crimping the lead wire, from the contact insertion opening in a state where the lead wire is crimped to the crimping part It is inserted into the contact insertion chamber such that said leads extending from the other surface, a conductive contact to be incorporated into the housing, a nut for being fixed to the device, the other surface wherein is inserted into the notched groove formed towards one side from the nut rotation is held in said cutout groove as is suppressed, substantially in one piece and another piece L Is configured in the shape, the piece is closed with the notch groove, and a cover that the other piece to close the other side, the housing includes a first forming the opposed, and the cutout groove together The other surface has a pair of guide grooves extending from one side surface to the second side surface opposite to the first side surface, and the other piece has a lead wire insertion groove through which the lead wire can extend on one end side. the test has, with both ends being slidably fitted to the pair of guide grooves, when moves parallel to the extending direction of the lead toward the other piece to the other surface, said other as both ends of the strip is possible enters the pair of guide grooves, at both ends of the other pieces, form a comb-like concavo-convex portions, both sides opposed to form the pair of guide grooves, the to form a comb-like concavo-convex portions corresponding to the concave-convex portion of the cover, the pair of guide In a state where both ends of the other pieces in the groove is fitted to slide, and wherein the other pieces together to enable preventing movement of said contact, a piece of the cover is possible to prevent the movement of the nut Jack to do.

  The jack of the present invention includes an insulating housing having a substantially rectangular parallelepiped shape. In this housing, a plug insertion opening for inserting a mating plug is opened on one surface. The housing is provided with a contact insertion chamber having the plug insertion opening as an opening. Further, the housing is provided with a contact insertion opening on the other surface facing the plug insertion opening. The contact insertion opening communicates with the contact insertion chamber.

  The insulating housing may be a housing made of a non-conductive material. For example, an engineering plastic such as PPS (polyphenylene sulfide) or PBT (polybutylene terephthalate) is molded to form a substantially rectangular housing. Obtainable.

  The plug connection opening may be an opening into which the mating plug is inserted from the outside of the housing, and may have an area or an outer shape for inserting the mating plug. Further, for example, the plug connection opening may be an opening that opens only when the mating plug is inserted. For example, the opening is sealed by a door coupled by a hinge, and the mating plug is inserted. You may include the opening provided with the mechanism in which the said door opens interlockingly.

  The plug connection opening preferably has a shape that fits the insertion terminal of the mating plug. For example, the plug connection opening may be a circle or a rectangle including a regular square. When the plug connection opening is circular, the contact insertion chamber may be a substantially cylindrical space, and when the plug connection opening is rectangular, the contact insertion chamber may be a substantially rectangular parallelepiped space. The plug connection opening may be circular, and the contact insertion chamber may be a substantially rectangular space.

  One surface is a surface on the side where the mating plug is inserted. For example, this one surface may be exposed from the panel, and one surface other than the plug connection opening is shielded by this panel. Also good. 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 connection opening as an inner circle is formed so as 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 contact insertion chamber is a space including a place for holding or storing the contact, and may include a space formed in the housing. A part of the contact may be disposed by insertion, holding, storage, or the like in the contact insertion chamber.

  The contact insertion opening communicating with the contact insertion chamber preferably has a cross-sectional shape into which the contact can be inserted. The contact insertion chamber having the contact insertion opening as an opening includes a space having a width (thickness) for partially holding the contact and formed in the housing.

  The jack of the present invention includes a conductive contact. This contact has a crimping part for connecting lead wires by crimping. For example, the contact is inserted into the contact insertion chamber from the contact insertion opening in a state where the lead wire is crimped to the crimping portion. The contact is incorporated in the housing so that the lead wire extends from the other surface.

  The conductive contact may be a contact made of a conductive material, and is preferably made of a conductive metal. For example, this contact can be obtained by molding a metal plate such as copper, iron, or aluminum. In view of ease of processing and conductive performance (low electrical resistance), this contact is preferably made of copper.

  The lead wire may be, for example, a lead wire that is connected to a power circuit built in an electrical device to which the jack is attached and transmits power for power supply. The lead wire is an electric wire in which a conductive core material is covered with an insulating coating material. The lead wire may be a single wire or two or more double wires.

  In general, lead wires are connected by crimping. A crimping terminal is generally provided with a crimping portion for bending a part of a terminal member so as to wrap a core material such as a lead wire and fixing the core material. Connection (sometimes and mechanically). A so-called conductor grip may be provided in the crimping portion. Further, the lead wire may be bent so as to be wrapped from above the covering material and mechanically fixed to the lead wire. A so-called insulation grip may be provided in the crimping portion.

  And after a lead wire is crimped | bonded to the crimping | compression-bonding part of a contact, this contact is inserted in a contact insertion chamber from a contact insertion opening. When the contact is inserted into the contact insertion chamber, the lead wire extends from the other surface. The lead wire is cut in advance to a predetermined length from the crimping portion.

  The jack of the present invention includes a nut. This nut is a nut for fixing to an apparatus. The nut is inserted into a notch groove formed from the other surface of the housing toward the one surface. And this nut is clamped by the notch groove so that rotation may be suppressed.

  This nut may be, for example, a hexagonal nut, a square nut, or a special nut that is cut off with two opposite sides of a circular outer periphery as a string. The nut only needs to have two opposing sides that are sandwiched in the notch groove and are prevented from rotating. This nut is preferably a hexagonal nut in order to ensure the degree of freedom of insertion into the notch groove, and may be a pre-baling torque type (high torque type) hexagonal nut in order to ensure a tightening force.

  For example, a jack provided with a nut can be provided with a jack mounting member inside a panel of the device, and the jack can be fixed with a fastener such as a screw through the jack mounting member. In order to secure the tightening force, this nut is preferably a metal nut.

  The jack of the present invention includes a cover. This cover is formed in a substantially L shape with one piece and the other piece. One piece of this cover closes the notch groove in which the nut is held. The other piece of the cover closes the other side of the housing.

  This cover closes the notch groove and the other surface of the housing because at least these parts are covered with the cover, so that these parts are not visible from the outside, or these parts are electrically or physically externally. Inability to contact may be included.

  This cover is preferably made of a non-conductive material as in the housing, and is not limited to the same material as the housing as long as it is a non-conductive material. As this cover, for example, engineering plastic is molded to obtain a substantially L-shaped cover.

  The jack of the present invention is provided with a pair of guide grooves on the other surface of the housing in which the contact insertion opening is provided. The pair of guide grooves are opposed to each other. Further, the pair of guide grooves extends from the first side surface where the notch groove is formed to the second side surface facing the first side surface.

  The pair of guide grooves are formed, for example, in a square shape, and a pair of L-shaped sides are raised from the other surface of the housing to form the pair of guide grooves. A part of the other surface includes the pair of guide grooves.

  The jack of the present invention is provided with a lead wire insertion groove through which a lead wire can extend on one end portion side of the other piece of the cover. Then, both ends of the other piece of the cover are slidably fitted into the pair of guide grooves.

Furthermore, in the jack of the present invention, the other end of the cover is formed with a comb-like concavo-convex portion, while the opposing sides forming the pair of guide grooves are comb-teeth corresponding to the concavo-convex portion of the cover. Are formed. Then, when the other piece of the cover moves toward the other surface of the housing in parallel with the extending direction of the lead wire, both ends of the other piece of the cover can enter the pair of guide grooves.

  Here, it may be considered that a plurality of concave portions are formed at both ends of the other piece of the cover, and a convex portion is formed between the concave portions. The front end surfaces of the plurality of convex portions are aligned, and it may be considered that the front end surface forms a slide surface of the guide groove.

  On the other hand, it may be considered that a plurality of concave portions corresponding to the plurality of convex portions formed on both ends of the other piece of the cover are formed on both opposing sides forming the pair of guide grooves. It may be considered to form a part. And the bottom face of the recessed part formed in the said both sides may correspond with the slide surface of the said guide groove.

  In the jack of the present invention configured as described above, the cover is attached to the housing in the following procedure. The contacts are previously mounted on the housing, and the lead wires extend from the other surface of the housing.

  First, the cover and the housing are arranged so that the lead wire is surrounded by the lead wire insertion groove formed in the other piece of the cover. At this time, the tip of one piece of the cover is opposed to the notch groove in which the nut is held at a constant interval. The other piece of the cover is opposed to the other surface of the housing with a certain distance.

Next, the other piece of the cover and the other surface of the housing are brought close to each other, and both ends of the other piece of the cover enter the pair of guide grooves. During this time, the lead wire is surrounded by the lead wire insertion groove.

  Next, the cover is slid a predetermined distance from the first side surface toward the second side surface. When both ends of the other piece of the cover are slid and fitted into the pair of guide grooves of the housing, one piece of the cover closes the notch groove in which the nut is held, and the other piece of the cover is the other piece of the housing. Block the surface.

  In this way, the assembled jack can prevent the movement of the contact and the nut. Further, the cover can be attached to the housing with a relatively short sliding distance.

  The jack of the present invention is a jack in which a lead wire to be crimped to a contact is extended in a direction extending from a direction in which a mating plug is inserted, and is fixed to a device by a nut held in a housing. It is possible to provide a jack having a structure in which a connecting contact and a nut for fixing to a panel are securely held in a housing and can be easily assembled.

(2) (1) In the jack, wherein the housing has a columnar shape piece extending from the first side surface in parallel with lead wires extending from the other surface is provided, the other pieces of the cover, the lead Providing a raised portion in which a line insertion groove is formed, and sliding the other piece of the cover parallel to the other surface of the housing in a state where the lead wire extending from the other surface is surrounded by the lead wire insertion groove Then, the lead wire insertion groove is connected to the contact insertion opening, and the lead wire is surrounded by the columnar piece and the raised portion.

  In the jack of the present invention, a columnar piece extending from the first side surface is provided in the housing in parallel with the lead wire extending from the other surface. The other piece of the cover is provided with a raised portion in which a lead wire insertion groove is formed.

  The lead wire insertion groove through which the lead wire extends may be a place where the lead wire physically passes. For example, when a U-shaped groove is formed in the raised portion of the cover, this U-shaped groove is the lead wire. It can be an insertion groove.

  In the jack of the present invention, when the lead wire extending from the other surface is surrounded by the lead wire insertion groove, and the other piece of the cover is slid in parallel with the other surface of the housing, the lead wire insertion groove becomes the contact insertion opening. Connect with. The lead wire is surrounded by the columnar piece and the raised portion.

  Here, the state where the lead wire is surrounded by the lead wire insertion groove includes the state where the lead wire after the crimping portion is surrounded. Further, the columnar piece may be regarded as a part of the housing, and the lead wire insertion groove is connected to the contact insertion opening, and the lead wire after the crimping portion surrounded by the housing and the cover extends outside the jack.

  In the jack configured in this manner, the crimping portion and the lead wire near the crimping portion 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, since the crimping part is visually shielded during use, it is considered that the user can be given a sense of safety.

(3) (1) or in the jack according to (2), the lock arm wedge protrudes formed on the other end side of the other piece of the cover, latch on the other end side of the other surface of the housing the provided parts, the other pieces of the cover is guided to the pair of guide grooves to slide, jack, characterized in that the locking arm of the wedge is engaged with the latch portion.

  In the jack according to the present invention, a wedge-shaped lock arm protrudes from the other end of the other piece of the cover. Further, a latch portion is provided on the other end portion side of the other surface of the housing. When the other piece of the cover slides while being guided by the pair of guide grooves, the wedge-shaped lock arm is locked to the latch portion.

  As described above, the jack according to the present invention has a structure in which a lock mechanism is provided on a sliding cover and the housing is not easily opened once the housing is closed with the cover. In addition, it can also be set as the structure which provides a slit from the other end part side of the other piece of the cover used as the both wings of the lock arm, and forcibly opens the other end part side of the other piece of the cover to forcibly unlock.

(4) In the jack according to any one of (1) to (3), the contact is a hollow hollow columnar shape connected by crimping at the lead wire to the first crimping portion. A jack including a shaped contact, wherein the contact insertion opening includes a first opening for inserting the hollow columnar contact.

  In the jack of the present invention, the contact includes a hollow columnar contact. The hollow columnar contact is a hollow columnar shape that is connected to the lead wire by crimping at the first crimping portion. The contact insertion opening includes a first opening for inserting the hollow columnar contact.

  Here, the 1st crimping | compression-bonding part is for distinguishing from the 2nd crimping | compression-bonding part mentioned later, and is connected to the hollow columnar contact. The hollow columnar contact can take a form including a shape in which the column is hollow, such as a plate formed by bending a plate material with a press or the like. At this time, there may be an opening at the base end, and a press-fit pin may be inserted into this opening. This is because the posture is considered to be stable after the hollow columnar contact is assembled to the housing.

  Note that the base end portion may be near the end of the columnar shape and closer to the first crimping portion. Unlike the proximal end portion, the distal end portion on the opposite side of the proximal end portion is closed, and it is considered that the engagement with the plug of the connection partner is improved and the appearance is improved. The columnar portion of the hollow columnar contact is not limited, and may have a columnar shape, a prismatic shape, or the like, and may be a shape that does not extend vertically but extends obliquely or bends in the middle. .

  These shapes are adjusted to match the shape of the connection partner. The contact insertion opening may include a first opening for inserting the hollow columnar contact, and the contact insertion opening usually has a size larger than that of the first opening. In the first opening, a member having a function as described below can be arranged or a part can be provided.

  (5) In the jack according to (4), the hollow columnar contact includes an L-shaped tongue piece in the vicinity of the hollow columnar base end toward the first crimping portion, and the contact insertion A chamber includes a first insertion chamber into which the hollow columnar contact is inserted, and the first opening opens to insert the hollow columnar contact into the first insertion chamber; The insertion chamber includes a column insertion opening for inserting the hollow column-shaped contact along the column axis, and a column axis of the hollow column-shaped contact by engaging the L-shaped tongue piece in the vicinity of the column insertion opening. A first locking portion that suppresses rotation about the center, and a second stopper that contacts the L-shaped tongue piece and stops at a predetermined position when the hollow columnar contact is inserted into the column insertion opening. And a locking portion.

  In the jack of the present invention, the hollow columnar contact has an L-shaped tongue piece in the vicinity of the hollow columnar base end toward the first crimping portion. The contact insertion chamber includes a first insertion chamber into which the hollow columnar contact is inserted. The first opening is opened to insert the hollow columnar contact into the first insertion chamber.

  Here, the L-shaped tongue piece is disposed in the vicinity of the proximal end portion of the hollow columnar contact, and may include, for example, a tongue piece extending substantially perpendicular to the column axis. The first insertion chamber has a shape into which a hollow columnar contact can be inserted, and is usually shaped to be inserted in the column axis direction, but is not limited thereto, and is substantially in the column axis direction. It may include the case of inserting in a perpendicular direction. For example, assuming that the first insertion chamber is inserted in the column axis direction, the first insertion chamber may have a first opening having a shape that matches the cross-sectional shape of the column.

  The first insertion chamber includes a column insertion opening, a first locking portion, and a second locking portion. The column insertion opening allows the hollow columnar contact to be inserted along the column axis. Further, the first locking portion engages with an L-shaped tongue piece in the vicinity of the column insertion opening to suppress rotation about the column axis of the hollow columnar contact. The second locking portion comes into contact with the L-shaped tongue piece and stops at a predetermined position when the hollow columnar contact is inserted into the column insertion opening.

  The column insertion opening has a shape (for example, a circle) that matches the cross-sectional shape of the column, and the clearance is preferably relatively small, which stabilizes the attitude of the hollow columnar contact.

  The L-shaped tongue piece can include a function as a lance, and is defined and inserted in accordance with first and second locking portions provided in the vicinity of the column insertion opening. The first locking portion that suppresses the rotation around the column axis of the hollow columnar contact may include, for example, a step wall formed in a second locking portion described later, and is sometimes called a lance. The protrusion may be a shape.

  A second locking portion for inserting the hollow columnar contact through the first opening, inserting the column portion through the column insertion opening, and stopping the insertion when the hollow columnar contact is disposed at a predetermined position in the housing. May be included in the housing.

  The second locking portion abuts on the L-shaped tongue piece and stops the progress of the hollow columnar contact, but can be provided as a step communicating with the column insertion opening. That is, the end of the bottom of the tongue piece in the hollow columnar contact in which the degree of freedom in the rotation direction is limited by the first locking portion, for example, abuts on such a step, and insertion (progress of the hollow columnar contact) ) Can be stopped.

  (6) In the jack according to any one of (1) to (3), the contact has an elastic movable contact connected by crimping at the lead wire and a second crimping portion. A jack characterized in that the contact insertion opening includes a second opening for inserting the J-shaped contact.

  In the jack of the present invention, the contact includes a J-shaped contact. The J-shaped contact has a J-shaped cross section having an elastic movable contact connected to the lead wire and the second crimping portion by crimping. The contact insertion opening includes a second opening for inserting the J-shaped contact.

  Here, the contact whose cross-sectional shape having the elastic movable contact is J-shaped may include a contact that can ensure contact pressure by elasticity. Moreover, what has the cross-sectional shape of the approximate center of J shape may be included. The second opening is an opening that is open so that such a contact can be inserted, and the nature of the second opening is substantially the same as that of the first opening.

  (7) In the jack described in (6), the J-shaped contact is directed to a rectangular back plate constituting a J-shaped main longitudinal section, and from the rectangular back plate to the elastic movable contact on the front surface. A bent portion that is arranged in the middle and ensures a return force due to the elasticity of the elastic movable contact, and a pair of opposing guide plates that extend in the L-shape from both wings of the rectangular back plate in the forming direction of the elastic movable contact The contact insertion chamber includes a second insertion chamber for inserting the J-shaped contact, and the second opening inserts the J-shaped contact into the second insertion chamber. The jack is characterized in that the second insertion chamber includes a pair of slits for guiding the pair of guide plates so as to guide the J-shaped contact to the second insertion chamber.

  In the jack of the present invention, the J-shaped contact has a rectangular back plate, a bent portion, and a pair of opposing guide plates. The rectangular back plate forms a J-shaped main longitudinal section. The bent portion is arranged on the way from the rectangular back plate to the elastic movable contact on the front surface, and ensures the return force due to the elasticity of the elastic movable contact. The pair of opposing guide plates extends in the L-shaped direction from the both wings of the rectangular back plate in the direction in which the elastic movable contact is formed.

  Here, the rectangular back plate means that the main longitudinal section, which is a vertically long bar-like shape as viewed from the right side of the J-shaped shape that is the longitudinal section of the J-shaped contact, looks rectangular when viewed from the back. It may mean a back plate.

  The bent portion that looks like a J-shape at the bottom of the J-shaped contact is arranged on the way from the rectangular back plate to the elastic movable contact on the front, and guarantees the elastic return force to the elastic movable contact. ing. The pair of guide plates extending in an L shape from both side surfaces of the rectangular back plate can be considered as a state in which the extended back surface is bent at a substantially right angle from both side surfaces of the rectangular back plate. However, in order to ensure the bending of the bent portion, it may be necessary to cut the bent portion. As a result, the pair of guide plates may extend in the direction in which the elastic movable contact of the J-shaped contact is formed.

  In the jack of the present invention, the contact insertion chamber includes a second insertion chamber into which the J-shaped contact is inserted. The second opening is opened to insert the J-shaped contact into the second insertion chamber. The second insertion chamber includes a pair of slits for guiding the pair of guide plates so as to guide the J-shaped contact to the second insertion chamber.

  The second insertion chamber and the second opening into which the J-shaped contact is inserted have the same conditions as in the case of the hollow columnar contact. The pair of slits can restrict the movement of the pair of guide plates in one direction so as to insert the pair of guide plates and smoothly insert the J-shaped contact into the housing.

  The jack according to the present invention is a jack in which a lead wire to be crimped to a contact is extended in a direction extending from a direction in which a mating plug is inserted, and is fixed to a device by a nut held in a housing. The lead wire extension surface (back surface of the jack) and the notch groove where the nut is held are covered with a substantially L-shaped cover, and this cover is easy from the back surface direction of the jack. Therefore, it is possible to provide a jack having an easily assembled structure in which the contact for electrical connection and the nut for fixing to the panel are securely held in the housing.

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

  FIG. 1 is a perspective external view showing a jack assembly procedure (contact insertion) according to an embodiment of the present invention. FIG. 2 is a perspective external view showing a procedure for assembling the jack (insertion of a nut) according to the embodiment.

FIG. 3 is a perspective external view showing the assembly procedure of the jack (before the cover is engaged) according to the embodiment. FIG. 4 is a perspective external view showing the assembly procedure of the jack (after the cover is engaged) according to the embodiment. FIG. 5 is a perspective external view showing an assembling procedure (cover entry ) according to the embodiment. FIG. 6 is a perspective external view showing the assembly procedure (assembly completion) of the jack according to the embodiment.

  FIG. 7 is a perspective external view of the jack according to the embodiment as viewed from the front side. FIG. 8 is a perspective external view of the cover according to the embodiment as viewed from the back side. FIG. 9 is a perspective external view of the housing according to the embodiment as seen from the back side. FIG. 10 is a perspective external view of the J-shaped contact according to the embodiment.

  FIG. 11 is a plan view of the housing according to the embodiment. 12 is a cross-sectional view taken along arrow AA in FIG. 13 is a cross-sectional view taken along line BB in FIG. 14 is a cross-sectional view taken along the line CC of FIG. FIG. 15 is a perspective external view showing an electrical apparatus to which the jack according to the embodiment is applied.

  In the embodiment, since the jack according to the present invention includes the hollow columnar contact and the J-shaped contact, the contact insertion chamber into which the hollow columnar contact is inserted is referred to as a “first insertion chamber”. The contact insertion chamber into which the J-shaped contact is inserted will be described as a “second insertion chamber”.

  Further, the contact insertion opening which is the opening of the “first insertion chamber” is referred to as “first opening”, and the contact insertion opening which is the opening of the “second insertion chamber” is distinguished as “second opening”. To do.

  First, the structural function of the present embodiment will be briefly described with a focus on the housing, and then each figure will be described in more detail.

  As shown in the cross-sectional view of FIG. 13, the housing 1 has a plug insertion port 11 into which a mating plug is inserted opened on one surface 1 a (hereinafter referred to as a surface 1 a). A contact insertion opening 13 is provided on the other surface 1b (hereinafter referred to as the back surface 1b) facing the plug insertion port 11. The interior of the housing 1 is partitioned into two types of contact insertion chambers 121 and 122 by a partition wall 1p.

  As shown in FIG. 13, a first opening 131 and a second opening 132 for inserting contacts are formed on both sides of the partition wall 1p, and communicate with the first insertion chamber 121 and the second insertion chamber 122, respectively. Has been.

  Moreover, as FIG. 13 or FIG. 14 shows, the 1st insertion chamber 121 and the 2nd insertion chamber 122 are connected below the partition 1p. A contact insertion opening 13 is formed on the back surface 1b of the housing 1 so as to face the entire surface.

  As shown in FIG. 11 or FIG. 12, a lance 17 protruding in a spear shape is disposed around the first opening 131. The lance 17 protrudes from the bottom wall of the stepped portion 181 having the first opening 131 as an opening. On the other hand, as shown in FIG. 11 or FIG. 14, a pair of slits 191 and 192 are disposed on both sides of the partition wall 1p.

  As shown in FIG. 1, the hollow columnar contact 2 inserted into the first opening 131 is formed by pressing a plate material. The hollow columnar contact 2 includes a cylindrical contact body 2a. Further, the hollow columnar contact 2 includes a pair of L-shaped tongue pieces 221 and 222 provided in the vicinity of the base end 2b of the contact body 2a. One L-shaped tongue piece 221 has a terminal end, and the other L-shaped tongue piece 222 includes a first crimping portion 21 at the terminal end portion to be connected to the lead wire 20.

  When the contact body 2a of the hollow columnar contact 2 is inserted into the first opening 131, the pair of L-shaped tongue pieces 221 and 222 abut against the bottom wall of the stepped portion 181 and the contact body 2a is inserted into the first insertion portion 131. The entire entry into the chamber 121 is prevented, and the lance 17 engages with one L-shaped tongue 221 to prevent the contact body 2a from retreating, and the contact body 2a is held in a predetermined position. . Since the pair of L-shaped tongue pieces 221 and 222 are sandwiched between the stepped walls formed in the lance 17 and the stepped portion 181, the rotation of the contact body 2 a is also prevented (see FIG. 3).

  Here, the lance 17 can be a first locking portion that suppresses rotation about the column axis of the hollow columnar contact 2. Further, the stepped portion 181 can be a second locking portion that stops the hollow columnar contact 2 at a predetermined position.

As shown in FIG. 14, the second opening 132 has a rectangular cross section, and a pair of slits 191 and 192 extend from the back surface 1b to the front surface 1a at both corners of the partition wall 1p. The pair of slits 191 and 192 are open on the back surface 1b side. As shown in FIG. 13, a small piece (or lance) 126 is disposed at a location facing the back-side opening 116 in the second insertion chamber 122. The small piece 126 is formed by extending a thin-walled portion having a cross section “he” from the periphery of the window 127 of the housing 1.

  The J-shaped contact 3 shown in FIG. 10 is formed by pressing a plate material. The contact main body 3a is connected to a lead wire 30 extending substantially in parallel from the base end 3b of the contact main body 3a. And a second crimping portion 31 for the purpose.

  As shown in FIG. 1 or FIG. 10, the contact main body 3a includes a rectangular back plate 3c, a pair of guide plates 311 and 312 that are bent and extended from both side edges of the back plate 3c into an L shape, and a back plate. An elastic movable contact 3e that is folded back at a lower bent portion 3d of 3c, a contact piece 3f that is bent and extended in an L shape on the upper side of the back plate 3c, and a wedge raised portion provided at the center of the back plate 3c (Or lance) 3g.

  In addition, the both ends of the extending member at the tip of the elastic movable contact 3e are engaged with the openings 313 and 314 provided in the pair of guide plates 311 and 312 so that the elastic movable contact 3e varies as the plug is inserted and removed. Stroke can be regulated.

  When assembling the J-shaped contact 3 in the housing 1, the contact body 3a is inserted into the second opening 132 by engaging the pair of guide plates 311 and 312 with the pair of slits 191 and 192 (see FIG. 1). .

  When the tips (corresponding to the tip edges) of the pair of guide plates 311 and 312 come into contact with the bottom inner wall of the second insertion chamber 122, further entry of the contact body 3a is prevented and the lance 126 is engaged with the lance 3g. In combination, the contact main body 3a is prevented from retracting (see FIG. 1). As a result, the contact body 3 a is held at a predetermined position in the second insertion chamber 122. At this time, the elastic movable contact 3e protrudes into the first insertion chamber 121 on the positive electrode side from the opening 116 of the partition wall 1p.

  As shown in FIG. 9 or FIG. 12, a notch groove 14 into which the nut 4 shown in FIG. 2 is inserted is formed in the first side face 1c sharing both sides with the front face 1a and the back face 1b. The cutout groove 14 is cut out from the back surface 1b toward the front surface 1a. The notch groove 14 is also extended to a pair of columnar pieces 141 and 142 extending from the first side surface 1c.

  The nut 4 shown in FIG. 2 has a flange 4b having a hexagonal side periphery at an intermediate portion of a cylindrical nut body 4a. An internal thread is formed at the center of the cylindrical nut body 4a. The nut 4 is a so-called pre-torque torque type (high torque type) hexagonal nut in order to secure a tightening force.

  As shown in FIG. 11 or FIG. 12, the cutout groove 14 forms a three-layer space of a first cutout groove 14a, a second cutout groove 14b, and a third cutout groove 14c. The lateral width of the first notch groove 14a is slightly larger than the outer diameter of the cylindrical nut body 4a.

  The lateral width of the second notch groove 14b is formed to be slightly larger than the opposite side distance of the hexagonal flange 4b, and the nut 4 is sandwiched in the second notch groove 14b to suppress rotation. The lateral width of the third notch groove 14c is slightly larger than the outer diameter of the cylindrical nut body 4a. The third cutout groove 14 c communicates with a slit 192 into which one guide plate 312 of the J-shaped contact 3 is inserted.

  As shown in FIG. 9, a pair of guide grooves 15a and 15b are provided on the back surface 1b of the housing 1 where the contact insertion opening 13 is provided. The pair of guide grooves 15a and 15b are opposed to each other, and the pair of guide grooves 15a and 15b is a second side face 1d that faces the first side face 1c from the first side face 1c where the notch groove 14 is formed. Has reached.

  On the other hand, the cover 5 shown in FIG. 8 is configured in a substantially L shape with one piece 51 and the other piece 52. One piece 51 of the cover 5 closes the notch groove 14 in which the nut 4 is held (see FIG. 2). The other piece 52 of the cover 5 closes the back surface 1b of the housing 1 (see FIG. 6).

  The other piece 52 of the cover 5 shown in FIG. 8 is provided with a pair of lead wire insertion grooves 5a and 5b in which the lead wires 20 and 30 (see FIG. 3) can extend. Both ends 5c and 5d of the other piece 52 of the cover 5 shown in FIG. 8 are slidably fitted in a pair of guide grooves 15a and 15b (see FIG. 3).

  The other piece 52 of the cover 5 shown in FIG. 8 has a wedge-shaped lock arm 54 protruding from the other end side. Further, a latch portion 18 is provided on the other end side of the back surface 1 b in the housing 1. When the other piece 52 of the cover 5 slides while being guided by the pair of guide grooves 15 a and 15 b, the wedge-shaped lock arm 54 is locked to the latch portion 18.

  Next, a method for assembling the jack will be described.

  The crimping portions 21 and 31 of the two types of contacts 2 and 3 are previously crimped to connect the lead wires 20 and 30 to the contacts 2 and 3 (see FIG. 1). The nut 4 is also inserted in advance into the notch groove 14 of the housing 1 (see FIG. 2).

  First, as shown in FIG. 1, by inserting and fixing the contact body 3 a of the J-shaped contact 3 into the second insertion chamber 122 through the second opening 132, the lead wire 30 after the crimping portion 31 is connected to the housing 1. (See FIG. 3).

  Next, as shown in FIG. 1, the contact body 2 a of the hollow columnar contact 2 is inserted and fixed in the first insertion chamber 121 through the first opening 131, so that the lead wire 20 after the crimping portion 21 is connected to the housing 1. (See FIG. 3).

  The hollow columnar contact 2 may be inserted into the housing 1 first, and the J-shaped contact 3 may be inserted into the housing 1 later. The hollow columnar contact 2 and the J-shaped contact 3 may be simultaneously inserted into the housing 1. May be.

  Next, as shown in FIG. 4, the cover 5 and the housing 1 are arranged so that the lead wires 20 and 30 are surrounded by the lead wire insertion grooves 5 a and 5 b formed in the other piece 52 of the cover 5. At this time, the tip of the piece 51 of the cover 5 is opposed to the notch groove 14 in which the nut 4 is held with a certain interval. Further, the other piece 52 of the cover 5 is opposed to the back surface 1b of the housing 1 with a certain interval.

Next, as shown in FIG. 4, the other piece 52 of the cover 5 and the back surface 1b of the housing 1 are brought close to each other, and both ends 5c and 5d of the other piece 52 of the cover 5 enter the pair of guide grooves 15a and 15b. . During this time, the lead wires 20 and 30 are surrounded by the lead wire insertion grooves 5a and 5b.

  Next, the cover 5 is slid a predetermined distance from the first side surface 1c toward the second side surface 1d. As shown in FIG. 6, in a state where both ends 5 c and 5 d of the other piece 52 of the cover 5 are slid and fitted in the pair of guide grooves 15 a and 15 b of the housing 1, the piece 51 of the cover 5 is the nut 4. Is closed, and the other piece 52 of the cover 5 closes the back surface 1 b of the housing 1.

  Hereinafter, a jack according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a jack housing 1 according to the present embodiment having a hollow and columnar contact (“hollow columnar contact”) 2 and a cross-sectional shape having an elastic movable contact are J-shaped. A state is shown in which a contact (“J-shaped contact”) 3 is to be inserted into an opening (contact insertion opening) for insertion into the inside of the back surface 1 b of the housing 1.

  The housing 1 has a substantially rectangular parallelepiped shape as a whole, and the rear surface 1b visible on the upper right side in the figure, the four side surfaces in contact with the four sides of the rear surface 1b, and the lower left side in FIG. It is surrounded by a surface 1a that is visible to the left. Of the four side surfaces, a notch groove 14 into which the nut 4 is inserted is formed in the first side surface 1c hidden behind in FIG. On the third side surface 1e that is visible in the foreground, a window 127 is provided in a substantially central portion, and a thin piece (or lance) 126 that is thin is disposed therein.

  A pair of columnar pieces 141 and 142 extending from the back surface 1b of the housing 1 are formed on the first side surface 1c side. A notch groove 14 is provided between the pair of columnar pieces 141 and 142.

  A pair of guide grooves 15 a and 15 b are provided on the back surface 1 b of the housing 1. The pair of guide grooves 15a and 15b are opposed to each other, and further, the pair of guide grooves 15a and 15b is a second surface facing the first side face 1c from the first side face 1c where the notch groove 14 is formed. It has reached side surface 1d.

  The pair of guide grooves 15 a and 15 b are formed substantially parallel to the back surface 1 b of the housing 1. The upper sides 151 and 152 of the pair of guide grooves 15a and 15b form one wall forming the guide grooves 15a and 15b, and the other piece 52 of the cover 5 described later slides along the pair of guide grooves 15a and 15b. The cover 5 has a function of holding the cover 5 so as not to be separated from the housing 1.

  Side walls of the pair of guide grooves 15 a and 15 b are also formed by a pair of stepped portions 181 and 182 formed on the back surface 1 b of the housing 1. The pair of guide grooves 15a and 15b including the pair of stepped portions 181 and 182 are open in the direction of the second side surface 1d of the housing 1, and the pair of guide grooves 15a and 15b are viewed from the second side surface 1d side. In this case, it is in a W shape or an E shape.

  The latch portion 18 in the middle on the other end side of the back surface 1b of the housing 1 is covered when the cover 5 having a lock arm 54 described later slides to close the opening on the back surface 1b of the housing 1. 5 is locked to the housing 1.

  In FIG. 1, the second opening 132 included in the contact insertion opening 13 (see FIG. 13) has a J-shaped contact 3 whose cross-sectional shape looks like a J-shape in the second insertion chamber 122 (see FIG. 13). Open for insertion. The J-shaped contact 3 includes a contact main body 3 a and a second crimping portion 31 that holds the lead wire 30.

  The contact body 3a includes a rectangular back plate 3c and a pair of guide plates 311 and 312 disposed on both sides of the back plate 3c. The back plate 3c has a wedge-shaped member (or lance) 3f, which is an example of the above-described wedge-lifting member, at substantially the center, and can engage with the small piece 126.

  In FIG. 1, after the J-shaped contact 3 is inserted into the second insertion chamber 122 (see FIG. 13) of the housing 1 and fixed at a predetermined position, the hollow columnar contact 2 becomes the first contact insertion port. Insert into the housing 1 through the opening 131.

  As shown in FIG. 1, the hollow columnar contact 2 includes a cylindrical contact body 2 a, a pair of L-shaped tongue pieces 221 and 222, and a first crimping portion 21 that crimps the lead wire 20. Composed. The first crimping portion 21 may include an insulation grip 21 a that crimps the lead wire 20 from above the covering material and a conductor grip 21 b that crimps the core material of the lead wire 20. In the hollow columnar contact 2, the above-described members are arranged in parallel along the column axis.

  In FIG. 1, the tip of the hollow columnar contact 2 faces downward in the figure, but it can be closed in the same manner as the hollow cylindrical contact body 3a made from sheet metal. The tip has a spherical shape in this embodiment because of the standard of the jack, appearance, or other reasons.

  In FIG. 1, the hollow columnar contact 2 is inserted into the column insertion opening 13a through the first opening 131 so that one L-shaped tongue piece 221 is fitted into the step wall formed in the lance 17 and the stepped portion 181. Inserted (see FIG. 9).

  As shown in FIG. 3, the hollow columnar contact 2 is inserted into the column insertion opening 13a through the first opening 131 and fixed at a predetermined position. The end surfaces on the column axis side of the pair of L-shaped tongue pieces 221 and 222 are in contact with the bottom wall (see FIGS. 9 and 11) of the stepped portion 181 formed around the column insertion opening 13a. Further insertion of the mold tongues 221 and 222 is prevented. Thereby, the progress of insertion of the hollow columnar contact 2 is stopped.

  In FIG. 1, a hollow columnar contact 2 and a J-shaped contact 3 are inserted into the housing 1, and the crimping portions 21 and 31 are accommodated in step portions 181 and 182 on the back surface 1 b side of the housing 1, respectively. As shown in FIG. 5, the cover 5 is attached to the housing 1 with the lead wires 20 and 30 of the hollow columnar contact 2 and the J-shaped contact 3 extending from the back surface 1 b side of the housing 1. .

  Next, the operation of the jack of the present invention will be described while supplementing the configuration of the jack of the present invention.

  As shown in FIG. 8, lead wire insertion grooves 5 a and 5 b through which the lead wires 20 and 30 can extend are provided on one end side of the other piece 52 of the cover 5. Then, both ends 5c and 5d of the other piece 52 of the cover 5 are slidably fitted into the pair of guide grooves 15a and 15b (see FIG. 9).

  As shown in FIG. 8, comb-like uneven portions are formed on both ends 5 c and 5 d of the other piece 52 of the cover 5. On the other hand, as shown in FIG. 9, comb-like uneven portions corresponding to the uneven portions of the cover 5 are formed on the opposing sides 151 and 152 forming the pair of guide grooves 15 a and 15 b.

Then, as shown in FIG. 5, when the other piece 52 of the cover 5 moves toward the back surface 1 b of the housing 1 in parallel with the extending direction of the lead wires 20 and 30, both ends of the other piece 52 of the cover 5. 5c and 5d can enter the pair of guide grooves 15a and 15b.

  Here, the ends 5c and 5d of the other piece 52 of the cover 5 shown in FIG. 8 may be considered to be formed with a plurality of pairs of recesses 50c and 50d, and a pair of protrusions is formed between the recesses 50c and 50d. It may be considered that the portions 51c and 51d are formed. A pair of raised portions 5e and 5f formed on the other end side of the other piece 52 of the cover 5 may also be included in the convex portions 51c and 51d. The tip surfaces of the plurality of convex portions 51c and 51d are aligned, and the tip surfaces may be considered to form the slide surfaces of the guide grooves 15a and 15b.

On the other hand, on both opposing sides 151 and 152 forming the pair of guide grooves 15a and 15b shown in FIG. 9, a plurality of convex portions 51c and 51d formed at both ends 5c and 5d of the other piece 52 of the cover 5 enter. It may be considered that a plurality of possible recesses 15c and 15d are formed, and it may be considered that a projection is formed between the recesses 15c and 15d.

As shown in FIG. 5, from the state just before the two ends 5c · 5d other piece 52 of the cover 5 is to enter the pair of guide grooves 15a · 15b, when advancing the cover 5 to the housing 1, shown in FIG. 6 The back surface of the other piece 52 of the cover 5 (the opposing surface of the back surface 1 b of the housing 1) abuts on the back surface 1 b of the housing 1. At this time, the tip surfaces of the pair of raised portions 5e and 5f formed at the other end of the other piece 52 of the cover 5 come into contact with the bottom surfaces of the pair of step portions 181 and 182 shown in FIG.

  When the other piece 52 of the cover 5 is slid from the first side face 1c to the second side face 1d of the housing 1, as shown in FIG. 7, the one piece 51 of the cover 5 has a notch groove in which the nut 4 is held. 14 is closed. Further, as shown in FIG. 6, the other piece 52 of the cover 5 closes the back surface 1 b of the housing 1.

As shown in FIG. 8, a recess 55 is provided on the back surface of the other piece 52 of the cover 5. When the other piece 52 of the cover 5 enters toward the back surface 1 b of the housing 1, the recess 55 avoids colliding with the lance 17 shown in FIG. 9 and the upright column 17 a adjacent to the lance 17. The concave portion 55 also has a function of being guided by the lance 17 and the upright column 17a when the cover 5 slides.

  As shown in FIG. 8, an arc-shaped groove 51 s and a V-shaped groove 51 v are formed at the tip of one piece 51 of the cover 5. The inner diameter of the arc-shaped groove 51s is slightly larger than the outer diameter of the cylindrical nut body 4a (see FIG. 2). On the other hand, the opening angle of the V-shaped groove 51v is slightly larger than the corner of the hexagonal flange 4b (see FIG. 2) around the side.

  The cover 5 in which the arc-shaped groove 51 s and the V-shaped groove 51 v are formed at the tip of the piece 51 closes the notch groove 14 in which the nut 4 is held, so that the nut 4 can be removed from the housing 1. To prevent it from moving.

  On the other hand, the other piece 52 of the cover 5 closes the hollow columnar contact 2 and the J-shaped contact 3 extending from the back surface 1 b of the housing 1. More specifically, as shown in FIG. 3, the other piece 52 of the cover 5 closes the pair of L-shaped tongue pieces 221 and 222 and the contact piece 3 f that are exposed on the back surface 1 b of the housing 1.

  In this way, the other piece 52 of the cover 5 closes the hollow columnar contact 2 and the J-shaped contact 3, so that when the mating plug is inserted into the jack of the present invention, the hollow columnar contact 2 and J It is possible to prevent the letter-shaped contact 3 from retreating. Furthermore, the jack of the present invention has a structure that can be easily mounted with a small slide amount (stroke) when the cover 5 is mounted on the housing 1.

  Next, another feature of the jack of the present invention will be described. As shown in FIG. 1, the housing 1 is provided with a pair of columnar pieces 141 and 142 extending from the first side surface 1c in parallel with a pair of lead wires 20 and 30 extending from the back surface 1b. . On the other hand, as shown in FIG. 3, the other piece 52 of the cover 5 is provided with raised portions 53a and 53b in which a pair of lead wire insertion grooves 5a and 5b are formed.

As shown in FIG. 5, with the pair of lead wires 20 and 30 extending from the back surface 1b surrounded by the lead wire insertion grooves 5a and 5b, the other piece 52 of the cover 5 is paired with a pair of guide grooves 15a and 15b. To enter .

  Then, when the other piece 52 of the cover 5 is slid in parallel with the back surface 1b of the housing 1, as shown in FIG. 6, the pair of lead wires 20 and 30 are paired with the columnar pieces 141 and 142 and the pair of raised portions. Surrounded by 53a and 53b, respectively. At this time, the pair of lead wire insertion grooves 5a and 5b are connected to the contact insertion opening 13 (the first opening 131 and the second opening 132).

  Here, the state in which the pair of lead wires 20 and 30 are surrounded by the pair of lead wire insertion grooves 5a and 5b is a state in which the lead wires 20 and 30 after the crimping portions 21 and 31 (see FIG. 1) are respectively surrounded. Is included. The pair of columnar pieces 141 and 142 may be regarded as a part of the housing 1, and the lead wire insertion grooves 5 a and 5 b are connected to the contact insertion opening 13, and the crimping portion 21. Lead wires 20 and 30 after 31 are extended out of the jack.

  The jack configured in this way makes the crimping portions 21 and 31 and the lead wires 20 and 30 near the crimping portions 21 and 31 less susceptible 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, since the crimping parts 21 and 31 are visually shielded during use, it is considered that the user can be given a sense of safety.

  The jack of the present invention is characterized in that the cover 5 is locked to the housing 1. As shown in FIG. 8, a wedge-shaped lock arm 54 protrudes from the other end of the other piece 52 of the cover 5.

  On the other hand, as shown in FIG. 9, a latch portion 18 is provided on the other end side of the back surface 1 b of the housing 1. As shown in the cross-sectional view of FIG. 12, the latch portion 18 has a recess 18a formed so as to be recessed from the back surface 1b near the first side surface 1c, and a step that forms a step from the back surface 1b near the second side surface 1d. A notch groove 18c is formed.

  Thus, the latch portion 18 is formed in a convex shape having the concave portion 18a and the notch groove 18c on both sides, the inclined surface 18b is provided near the first side surface 1c, and the corner portion near the second side surface 1d is formed substantially at right angles. Has been. The upper surface of the latch portion 18 is flush with the rear surface 1 b of the housing 1.

When the other piece 52 of the cover 5 enters the back surface 1b of the housing 1 from the state shown in FIG. 5, the lock arm 54 enters the recess 18a. Next, when the other piece 52 of the cover 5 is slid from the first side face 1 c toward the second side face 1 d, the slope 18 b of the latch portion 18 contacts the slope formed on the lock arm 54.

  Further, when the other piece 52 of the cover 5 is slid, both ends 5c and 5d of the other piece 52 of the cover 5 are held by the pair of guide grooves 15a and 15b. Deflection. Further, when the other piece 52 of the cover 5 is slid, the lock arm 54 gets over the inclined surface 18 b and falls into the notch groove 18 c, and the lock arm 54 is locked to the housing 1.

  As described above, the jack of the present invention has a structure in which a lock mechanism is provided on the sliding cover 5, and once the housing 1 is closed with the cover 5, it is difficult to open easily. As shown in FIG. 8, a pair of slits are provided from the other end side of the other piece 52 of the cover 5 serving as both wings of the lock arm 54, and the other end side of the other piece 52 of the cover 5 is pry open to force The lock can also be released.

  FIG. 7 shows a state where the contact insertion opening 13 and the cutout groove 14 holding the nut 4 are closed by the cover 5 as described above. The jack completed in this way has a very compact shape. The nut 4 fixed on the first side surface 1c side of the housing 1 can be used for mounting on a frame or panel of a device in which this jack is used.

  Further, in FIG. 7, a round opening that is opened substantially at the center of the surface 1a of the housing 1 is a plug insertion slot 11 into which an external terminal such as a mating plug connected to the jack is inserted. In the present embodiment, the plug insertion port 11 is provided in a cylinder protruding from the surface 1 a of the housing 1. The tip of the hollow columnar contact 2 can be seen from the plug insertion port 11. The elastic movable contact of the J-shaped contact 3 is visible from the opening of the second insertion chamber 122 (see FIG. 13).

  Each of these two contacts can be used in a positive / negative or positive / ground relationship. The jack of this embodiment can be assembled and disassembled at any time, and when disassembling, the lock mechanism is released and each component is moved in the opposite direction.

  The jack 7 according to an embodiment of the present invention may be applied to, for example, a notebook computer 70 shown in FIG. The jack 7 is a power jack for the notebook computer 70. From the opening to which the mating plug is connected, a cross, which is a characteristic pattern, is visible at the tip of the hollow columnar contact. Not only such a notebook personal computer but also the jack of the present invention can be applied to all electrical devices. Moreover, the application range can be applied not only to the power source but also to all kinds of jacks for taking out and receiving electrical signals.

It is a perspective external view which shows the assembly procedure (insertion of a contact) of the jack by one Embodiment of this invention. It is a perspective appearance figure which shows the assembly procedure (insertion of a nut) of the jack by the said one Embodiment of this invention. It is a perspective external view which shows the assembly procedure (before engagement of a cover) of the jack by the said one Embodiment of this invention. It is a perspective appearance figure which shows the assembly procedure (after engagement of a cover) of the jack by the said one Embodiment of this invention. It is a perspective appearance figure which shows the assembly procedure ( entrance of a cover) of the jack by the said one Embodiment of this invention. It is a perspective external view which shows the assembly procedure (assembly completion) of the jack by the said one Embodiment of this invention. It is the perspective appearance figure which looked at the jack by the one embodiment of the present invention from the front side. It is the perspective appearance figure which looked at the cover by the one embodiment of the present invention from the back side. It is the perspective appearance figure which looked at the housing by the one embodiment of the present invention from the back side. 2 is a perspective external view of a J-shaped contact according to the embodiment of the present invention. FIG. 4 is a plan view of a housing according to the embodiment of the present invention. FIG. It is AA arrow sectional drawing of FIG. It is BB arrow sectional drawing of FIG. It is CC sectional view taken on the line of FIG. It is a perspective appearance figure showing an electric equipment to which a jack by the one embodiment of the present invention is applied. It is a perspective external view of the jack by a prior art.

Explanation of symbols

1 Housing 1a One surface (surface)
1b The other side (back side)
1c 1st side surface 1d 2nd side surface 2 Hollow columnar contact 2b Base end part 3 J-shaped contact 3c Back plate 3d Bending part 3e Elastic movable contact 4 Nut 5 Cover 5a, 5b Lead wire insertion groove 5c, 5d Both ends 11 Plug Insertion opening 13 Contact insertion opening 13a Column insertion opening 14 Notch grooves 15a and 15b Guide groove 17 First locking portion (lance)
18 Latch part 20/30 Lead wire 21 1st crimping part 31 2nd crimping part 51 One piece 52 of cover 52 Another piece 53a, 53b of raised part 54 Lock arm 121 First insertion chamber (contact insertion chamber)
122 Second insertion chamber (contact insertion chamber)
131 1st opening 132 2nd opening 141 * 142 Columnar piece 151 * 152 Both sides 181 2nd latching | locking part (step part)
191 and 192 A pair of slits 221 and 222 L-shaped tongue pieces 311 and 312 A pair of guide plates

Claims (7)

Plug insertion port opened to the one surface mating plug is inserted, communicates with the contact insertion chamber provided plug insertion opening contact insertion chamber to the opening, and on the other surface facing the plug insertion opening A substantially rectangular parallelepiped insulating housing having a contact insertion opening to be
Of having a crimping part which connects the crimp lead, the lead wire is inserted into the contact insertion chamber from the contact insertion opening in a state of being crimped to the crimp portion, the lead wire extending from the other surface A conductive contact incorporated in the housing,
A nut for being secured to the equipment, the are inserted from the other side into the notch groove formed toward the one surface, nut rotation is held in said cutout groove as suppressed When,
Is configured in a substantially L-shape in one piece with another piece, the piece is closed with the notch groove, and a cover that the other piece to close the other side,
The housing face each other, and a pair of guide grooves extending to a second side surface opposite from the first side surface for forming the cutout grooves in the first side surface to the other surface,
The other piece has both ends that are slidably fitted into the pair of guide grooves, in addition to having a lead wire insertion groove on one end side from which the lead wire can extend,
When moves parallel to the direction extending the lead wire toward the other piece to the other surface, as both ends of the other pieces is possible enters the pair of guide grooves, both ends of the other pieces In order to form the comb-shaped irregularities ,
Wherein the opposing sides to form a pair of guide grooves, to form a comb-like concavo-convex portions corresponding to the concave-convex portion of the cover,
In a state where both ends of the other pieces on the pair of guide grooves is fitted to slide, together with the other piece is possible to prevent movement of said contact, a piece of the cover is possible to prevent the movement of the nut Jack characterized by that. The jack according to claim 1, wherein
The housing is provided with a columnar piece extending from the first side surface in parallel with the lead wire extending from the other surface,
The other piece of the cover is provided with a raised portion in which the lead wire insertion groove is formed,
When the other piece of the cover is slid in parallel with the other surface of the housing in a state where the lead wire extending from the other surface surrounds the lead wire insertion groove, the lead wire insertion groove becomes the contact insertion opening. a connection, jacks, characterized in that the leads are surrounded by the raised portion and the pillar-shaped piece. The jack according to claim 1 or 2,
A wedge-shaped lock arm is formed to project from the other end of the other piece of the cover,
A latch portion provided on the other end of the other surface of the housing,
The jack, wherein the wedge-shaped lock arm is locked to the latch portion when the other piece of the cover slides while being guided by the pair of guide grooves. The jack according to any one of claims 1 to 3,
The contact includes a hollow column-shaped contact that is hollow and has a columnar shape connected by crimping at the first crimping portion with the lead wire,
The contact insertion opening, jack, characterized in that it comprises a first opening for inserting the hollow pillar-shaped contact. The jack according to claim 4, wherein
The hollow columnar contact has an L-shaped tongue piece in the vicinity of the hollow columnar base end toward the first crimping portion,
The contact insertion chamber includes a first insertion chamber for inserting the hollow columnar contact;
The first opening is opened to insert the hollow columnar contact into the first insertion chamber,
The first insertion chamber includes a column insertion opening for inserting the hollow columnar contact along a column axis;
In the vicinity of the column insertion opening, a first locking portion that engages with the L-shaped tongue piece and suppresses rotation about the column axis of the hollow columnar contact;
And a second locking portion that contacts the L-shaped tongue piece and stops at a predetermined position when the hollow columnar contact is inserted into the column insertion opening. The jack according to any one of claims 1 to 3,
The contact includes a J-shaped contact having a J-shaped cross section having an elastic movable contact connected to the lead wire by crimping at the second crimping portion;
The jack is characterized in that the contact insertion opening includes a second opening for inserting the J-shaped contact. The jack according to claim 6, wherein
The J-shaped contact is
A rectangular back plate constituting a J-shaped main longitudinal section;
A bent portion that is arranged on the way from the rectangular back plate to the elastic movable contact on the front surface to secure a return force due to elasticity of the elastic movable contact;
A pair of opposing guide plates extending in the L-shaped formation direction of the elastic movable contact from both wings of the rectangular back plate,
The contact insertion chamber includes a second insertion chamber for inserting the J-shaped contact;
The second opening is opened to insert the J-shaped contact into the second insertion chamber,
The jack is characterized in that the second insertion chamber includes a pair of slits for guiding the pair of guide plates so as to guide the J-shaped contact to the second insertion chamber.

Images