JP2006228448A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector capable of surely holding an inserted plug, performing stable switching, and reducing the size in a thickness direction. <P>SOLUTION: A pair of contact pieces 2a, 2b located in insertion spaces 1a1, 1a2 formed on a periphery side of a plug insertion hole 1a at an angle interval of 180 degrees are constituted in a contact member 2. Plug contact projections 2g, 2h projected in the plug insertion hole 1a are projected in inner edges of contact pieces 2a, 2b. A movable contact piece 2c freely separating from and contacting with a contact piece 3c of a terminal member 3 is arranged in the contact piece 2a provided with the plug contact projection 2g of large amount projection. When a plug is inserted in the plug insertion hole 1a, the plug contact projection 2g and the contact piece 2a provided with it retreat, the movable contact piece 2c is separated from the contact piece 3c by this operation. When the plug is pulled out, the contact piece 2a return by elasticity of a material constituting the contact member 2, and the movable contact piece 2c contacts the contact piece 3c. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pin jack or other various types of connection devices (female side connectors) used for transmission and reception of audio signals and video signals.

Regarding this type of connection device, a connection device of Patent Document 1 has been proposed.
This includes a main body having a plug hole for plug insertion opened on the front surface, a switch terminal disposed along the rear surface of the main body, a lead terminal portion disposed along the rear surface of the main body, and the lead. A contact portion that is integrated with the terminal portion and is bent in a direction intersecting the lead terminal portion and disposed in the plug hole, and the contact portion is inserted into and removed from the plug hole. And a lead terminal configured to be in contact with and away from the switch terminal.

  The contact portion of the lead terminal is configured such that an intermediate portion thereof is connected to the lead terminal portion, one end thereof is a switch terminal contact portion that contacts and separates from the switch terminal, and the other end is inserted and connected to the plug hole. The plug contact portion is in contact with the plug.

  In addition, the lead terminal has an attachment portion that is attached in the vicinity of the plug hole of the main body, and an elastic portion that provides elasticity in a direction in which the contact portion contacts the switch terminal in a state where the attachment portion is attached to the main body. It is also what has.

  Accordingly, in this connection device, when the plug contact portion is pushed by the plug inserted into the plug hole, the switch contact portion moves in the same direction as the insertion direction of the plug due to the pushing operation of the plug contact portion. The operation space is required in the thickness direction of the jack. Therefore, although this connection device has been proposed for the purpose of reducing the thickness, it is not always easy to reduce the size of the jack in the thickness direction. In addition, the plug contact portion retains the plug even when the plug is inserted to a predetermined depth due to its elasticity due to its elasticity in the direction of pushing back the plug. They are also worried about their holding power.

JP 2003-163059 A

  It is an object of the present invention to provide a connection device that can be configured to have a thin dimension in the thickness direction, and that can be securely coupled to and inserted into an inserted plug. In addition, when the connection device is equipped with a switch mechanism that is controlled to be opened and closed by inserting and removing the plug, it is possible to provide a connection device with a switch mechanism that can perform a reliable opening and closing operation while avoiding an increase in the dimension in the thickness direction of the device. Let it be a problem to be solved.

1 of the present invention is a connection device comprising at least a housing having a plug insertion opening and contact members respectively disposed on the housing.
The contact member is composed of a base, a pair of contact pieces projecting and extending from the base to the front end side in a U shape, and a terminal portion extending to the rear end of the base, and both contact pieces of the contact member Are arranged at mutually opposing portions on the peripheral side of the plug insertion port, and a portion of the contact member located on the back surface side of the housing is arranged along the back surface of the housing. Device.

According to a second aspect of the present invention, in the connection device according to the first aspect of the present invention, a terminal member provided with a contact piece detachably contacting a movable contact piece, which will be described later, disposed on the one contact piece is disposed on the housing. ,
Further, a plug contact protrusion protruding into the plug insertion opening is formed on the pair of contact pieces, and one of the contact pieces is in contact with the contact piece of the terminal member so as to be detachable and connected to the plug insertion opening. A movable contact piece that is separated from the contact piece of the terminal member by the operation of the plug contact protrusion that retreats by insertion of the plug is provided.

  According to a third aspect of the present invention, in the connecting device of the second aspect of the present invention, the plug contact protrusion formed on the contact piece provided with the movable contact piece among the plug contact protrusions is configured as another contact piece. The projection amount into the plug insertion hole is larger than the projection.

  4 of the present invention is the connecting device according to 2 or 3 of the present invention, in the contact piece of the contact piece that is not provided with the movable contact piece, when the plug is not inserted into the plug insertion port, A restricting piece for restricting the movable contact piece to come into contact with the contact piece of the terminal member, wherein the movable contact piece is locked to the corresponding part of the housing and the movable contact piece is not disposed. The control piece which controls so that it may not move to the contact piece side which arranged the piece is arranged.

  According to the connection device of the first aspect of the present invention, since the lower part of the contact member is bent and arranged along the back surface side of the housing, the size in the thickness direction of the device can be reduced. is there.

  According to the connection device of the second aspect of the present invention, the plug inserted into the plug insertion port can be reliably held by the plug contact projection of each of the pair of contact pieces, and the plug contact projection generated by the insertion of the plug In addition, through the retraction of the contact piece on which the switch is disposed, the movable contact piece formed on the contact piece is separated from the contact piece of the terminal member, so that the switch can be reliably opened. That is, the contact piece of the terminal member and the movable contact piece of one of the contact pieces are obtained by an operation in a direction orthogonal to the thickness direction of the device, that is, expansion and contraction of the distance between the pair of contact pieces when the plug is inserted into and removed from the plug insertion port. Therefore, the space for the operation in the thickness direction of the apparatus is not required, so that it is possible to reduce the thickness of the apparatus.

  According to the third connection device of the present invention, of the plug contact projections, the one that protrudes from the contact piece on which the movable contact piece is arranged is protruded from the other contact piece to the plug insertion hole. Since the projecting amount is formed large, naturally, when the plug is inserted into the plug insertion port, the retracting amount of the plug contact projection that is pushed back by this increases. Therefore, the retraction amount of the contact piece constituting this increases, and accordingly, the contact / separation (open / close) stroke of the movable contact piece with respect to the contact piece of the terminal member increases, and the opening operation of the movable contact piece with respect to the contact piece is performed. It will be even more certain.

  According to the connection device of 4 of the present invention, the restriction piece is arranged on the contact piece on which the movable contact piece is not arranged among the contact pieces, and the restriction piece is locked to the corresponding part of the housing. Therefore, the movable contact piece is regulated so as to be surely brought into contact with the contact piece of the terminal member when the plug is not inserted into the plug insertion port. In particular, when the plug is pulled out after the plug is inserted into the plug insertion port and the movable contact piece and the contact piece are in an open state, the movable contact piece is not arranged with the restriction piece. Since the contact piece does not move to the contact piece side constituting the movable contact piece and is definitely located at the original position, the elastic contact member is surely elastically pulled back, and the terminal The contact of the member with the contact piece is performed without error, and the switch can be reliably closed.

  The connection device of the present invention includes at least a housing having a plug insertion opening and a contact member, and the contact member includes a base portion, a pair of contact pieces, and a terminal portion. The contact pieces are arranged at mutually opposing portions on the peripheral side of the plug insertion opening, and the portion exposed on the back surface side of the housing is bent at the exposure start position, and the rear end side thereof is turned to the back surface side of the housing. It was decided to distribute along.

  The housing is a member formed of an insulating material. For example, a plug insertion port, a contact member to be arranged around the plug insertion port, and a pair of the connection device are formed in order to form a connecting device of the type and number according to the purpose. In the case where the earthing cap is to be configured, and the connecting device is configured as a jack with a switch mechanism, it is provided with components for attaching a terminal member and the like.

  It is assumed that the plug insertion opening is configured to open to the front side of the housing, and the diameter of the plug exceeds the diameter of the plug to be inserted. Further, two insertion spaces for inserting a pair of contact pieces of the contact member are provided on the peripheral side portion of the plug insertion opening. These two insertion spaces are slit-like spaces located in a mutually opposing positional relationship at the peripheral side portion of the plug insertion port, and are arranged at an angular interval of approximately 180 degrees in the circumferential direction of the peripheral side portion. It is appropriate to do.

  Further, when the connection device is configured as a pin jack, a mounting portion for mounting an earth cap around the portion opened to the front side of the plug insertion port is provided.

  The contact member is made of an electrically conductive member having elasticity, a base, a pair of contact pieces extending in a U-shape projecting from the base toward the front end, and a terminal extending from the base toward the rear end It consists of parts. Further, plug contact projections are formed on the pair of contact pieces so as to project from each other on the tip side.

  As described above, in the contact member, the pair of contact pieces on the tip end side are arranged in opposition to the plug insertion port, and a portion exposed on the back surface side of the housing is bent at the exposed portion thereof. It is characterized by being arranged along the back side.

  As described above, the pair of contact pieces are inserted into the insertion spaces when the insertion spaces for inserting the contact pieces are formed in the mutually opposing portions on the circumferential side of the plug insertion port. By doing so, the mutual positional relationship can be maintained. The lower parts of the pair of contact pieces are connected to the base part while being connected to each other as in the lower shape of the letter U, and this part is located in the plug insertion port. In many cases, it is not suitable. Therefore, it is appropriate to arrange the vicinity of the rear ends of the pair of contact pieces on the back side of the housing. Further, the portion to be arranged on the back side of the housing is referred to as the rear end side from the vicinity of the rear end of the pair of contact pieces as described above unless there is a special reason. It is assumed that the rear end side of the housing is bent at the starting point exposed on the back side of the housing, and is arranged along the back side of the housing as described above. In this way, the thickness of the connecting device in the front and back direction can be reduced.

  As described above, each of the plug contact protrusions is formed in a protruding state at a portion of each of the pair of contact pieces facing each other, and it is appropriate that the plug contact protrusion is formed on the distal end side. Further, the plug contact protrusion contacts the peripheral side of the plug from both sides when the plug inserted into the plug insertion port of the housing enters between the pair of contact pieces, and is electrically coupled thereto. And is intended to hold the plug in order to prevent unnecessary disconnection. Therefore, the protruding amount of the plug contact protrusion should be set so that the plug contact protrusion can contact the plug with a pressure corresponding to the plug contact protrusion. Needless to say, the amount of protrusion is determined in consideration of the elasticity of the material.

  When the connection device is configured with a switch mechanism, a movable contact piece is arranged on one of the pair of contact pieces in addition to the plug contact protrusion, and the movable contact is provided at a corresponding portion of the housing. It is assumed that a terminal member provided with a contact piece that comes into contact with and separate from the piece is provided.

  The movable contact piece is configured to contact and separate from the contact piece of the terminal member by the operation of the contact piece constituting the movable contact piece. As described above, the operation of the contact piece is caused when the plug is inserted into and removed from the plug insertion port. More specifically, the contact piece is connected to the plug contact protruding from the plug insertion port. The protrusion moves back and forth by contacting the plug inserted into the plug insertion slot and being pushed out of the plug insertion slot, and the plug is pulled out to return to the original position when the pushing action is lost. Operate. The movable contact piece is moved toward and away from the contact piece of the terminal member by the advancing and retreating operation of the contact piece. From the viewpoint of making this contact / separation operation more reliable, the protrusion amount of the plug contact protrusion of the corresponding contact piece is made sufficiently larger than that of the other contact piece, and the stroke of the advance / retreat operation is increased. It is preferable to make it as long as possible.

  The movable contact piece moves away from and in contact with the contact piece of the terminal member by the operation as described above, and is configured at a portion on the opposite side to the side where the plug contact projection of the corresponding contact piece is formed.

  Further, when the connecting device is configured with a switch mechanism as described above, when the plug is not inserted into the plug insertion port, the contact piece that is not provided with the movable contact piece is not inserted into the contact piece. It is preferable that a restricting piece for restricting the movable contact piece to come into contact with the contact piece of the terminal member is configured. The restricting piece is engaged with a corresponding portion of the housing to perform a restricting action. The contact piece that does not constitute the movable contact piece is regulated by the restriction piece so as not to move unnecessarily to the contact piece side that constitutes the movable contact piece, thereby achieving the above-described object. Is.

  When the plug is inserted into the plug insertion port, as described above, the pair of contact pieces are retracted in the direction outside the plug insertion port, and accordingly, the movable contact piece is separated from the contact piece of the terminal member. After that, when the plug is pulled out from the plug insertion port, the pair of contact pieces should return to their original positions due to their elasticity. That is, the movable contact piece of the one contact piece should return to the original position and contact the contact piece of the terminal member again.

  However, if there is room for the other contact piece to move on the one contact piece side where the movable contact piece is arranged, there is a possibility that the one contact piece may not be completely returned to the original position. Therefore, by providing the restricting piece on the other contact piece and restricting the other contact piece to move away from the one contact piece, the movable contact piece and the terminal member when the plug is not inserted are provided. The certainty of contact with the contact piece can be ensured.

  The terminal portion of the contact member can be extended from the base portion with an appropriate shape and dimension according to the convenience of the configuration. Usually, the two contact pieces of the base portion are extended from a portion on the opposite side to the extended side to form a belt shape.

  As described above, the terminal member should be arranged when the connection device is configured with a switch mechanism, and should have a contact piece at a part thereof. As described above, this contact piece comes into contact with a movable contact piece formed as one contact piece of the contact member so as to be able to contact and separate. More specifically, the contact piece is positioned at a position where it can come into contact with the movable contact piece when the plug is not inserted into the plug insertion opening. At the same time, when the movable contact piece operates as described above, the movable contact piece is positioned so as to be separated therefrom. That is, the contact piece constitutes a part of the switch mechanism, and is positioned on the housing in the above positional relationship by an attachment piece or the like formed at another part of the terminal member.

  The terminal member further includes a terminal portion. The terminal portion can be configured to extend from an appropriate portion with an appropriate shape and size according to the convenience of the configuration. Usually, it is configured to extend from an appropriate part into a belt shape.

  For example, when the connection device is configured as a pin jack type, a ground cap that is paired with the contact member is prepared, and as described above, this is configured around the front side of the plug insertion port of the housing. Attach to the mounting part. The earth cap is provided with attachment means having a configuration corresponding to the attachment part of the housing, and further provided with a terminal part. For example, the terminal portion may be configured to extend laterally from the vicinity of the lower end portion of the ground cap.

  Therefore, according to the connection device of the present invention, since the lower part of the contact member is bent and arranged along the back surface side of the housing, the dimension in the thickness direction of the device can be reduced.

  Further, as described above, when the connecting device of the present invention is configured as a jack with a switch mechanism by arranging the plug contact projection and the movable contact piece on the contact piece of the contact member and arranging the terminal member, As described above, the electrical connection between the plug inserted into the plug insertion port and the contact member is ensured, and the inserted plug is securely held. In addition, the operation of the switch mechanism accompanying the insertion / removal of the plug can be performed accurately and stably.

  First, when a plug is inserted into the plug insertion port of the connecting device, the plug enters between the pair of contact pieces while expanding between the plug contact protrusions, and is pressed and held from both sides by the plug contact protrusions. At the same time, they are electrically coupled with these. At the same time, when the distance between the pair of contact pieces is increased as the plug is inserted into the plug insertion opening, the corresponding one of the contact pieces is separated from the peripheral side of the plug insertion opening. The movable contact piece formed on the contact piece is separated from the contact piece formed on the terminal member by the operation in the direction (retracting operation), and the opening of the switch by the movable contact piece and the contact piece is controlled.

  As described above, if the contact piece provided with the movable contact piece in the plug contact projection is configured to have a larger protruding amount toward the plug insertion port than the other contact piece, the plug The retraction operation of the corresponding contact piece that occurs when the plug is inserted into the plug insertion opening is increased, and accordingly, the moving stroke formed on the contact piece is also increased from the contact piece of the terminal member. Therefore, the opening operation of the movable contact piece and the contact piece at this time can be made more reliable.

  In addition, a restriction piece that locks to a corresponding portion of the housing is arranged on the contact piece that is not provided with the movable contact piece among the contact pieces, and thereby the contact piece unnecessarily places the movable contact piece. If the movable contact piece is restricted so as not to move to the contact piece side, the movable contact piece is restricted so as to reliably contact the contact piece of the terminal member when the plug is not inserted into the plug insertion port.

  In particular, the restriction piece is a contact piece that is not provided with a movable contact piece when the plug is pulled out and the movable contact piece and the contact piece in an open (separated) state are about to close (contact). Since the movement of the movable contact piece toward the contact piece side is restricted, the elastic contact pull back action of the latter contact piece and the movable contact piece constituted thereby is ensured, and the contact of the terminal member to the contact piece is ensured. The contact of the movable contact piece is surely performed.

  Furthermore, in the connection device of the present invention, the movable contact piece is separated from or brought into contact with the contact piece by using the advancing / retreating operation associated with the plug insertion / removal of the contact piece arranged on the peripheral side of the plug insertion port. The direction of the advance / retreat operation, that is, the direction of the contact / separation operation between the movable contact piece and the contact piece is a direction orthogonal to the axis of the plug insertion port. Therefore, there is no need for a space for the operation in the thickness direction of the apparatus, and from this point, a thinner apparatus can be configured.

  When the plug is removed from the plug insertion port, as described above, the pair of contact pieces returns to their original positions, and the electrical connection between the plug and the contact pieces is released, and at the same time as described above. The movable contact piece of one contact piece and the contact piece of the terminal member come into contact with each other, and an electrical connection between them is formed.

Therefore, according to the connecting device of the present invention, as described above, it is possible to configure a thin device while maintaining a sufficiently excellent function.
That is, by bending the lower part of the contact member and arranging it along the back side of the housing, the size of the apparatus in the thickness direction can be made smaller.
Further, while ensuring a reliable electrical connection between the plug and the contact piece when the plug is inserted into the plug insertion port, the plug is held by the plug contact projection formed on the pair of contact pieces, and the plug By using the insertion / removal, the movable contact piece is separated / attached to ensure the opening / closing operation of the switch while avoiding the expansion of the space in the thickness direction of the apparatus.
Further, as described above, by arranging the regulating piece on the contact piece that does not constitute the movable contact piece, the return operation of the contact piece constituting the movable contact piece is surely generated, and the movable contact piece and the contact piece are brought into contact with each other. A more reliable contact with the piece is also ensured.

This embodiment is an example of a pin jack to which the present invention is applied.
As shown in FIGS. 1A, 1B, and 1C, the pin jack of this embodiment is basically arranged in a jack housing 1 having a plug insertion port 1a and each jack housing 1. The contact member 2, the terminal member 3, and the earth cap 4 paired with the contact member 2.

  As shown in FIGS. 1 (a), 1 (b) and 1 (c), the jack housing 1 is a member having a substantially quadrilateral shape when viewed from the front and formed of an insulating plastic. The front and back sides are formed in a front and back through state from the protruding portion at the center of the front side to the back side. As shown in FIG. 1 (c) and FIG. 4 (c), the projecting portion is formed around a mounting cylindrical portion 1b for mounting the cap main body 4c of the ground cap 4 as shown in FIG. ), (B), and (c), and further, there are locking grooves (not shown) for locking the fixed tongue piece 4a of the earth cap 4 and locking notches for attaching the terminal portions 4b. 1c is formed. The locking groove is formed in the vicinity of one side of the jack housing 1, and the locking notch 1c is formed in a state of being cut out in the vicinity of another side parallel to the one side.

  Further, as shown in FIG. 1 (c) in particular, insertion spaces 1a1, 1a2 for inserting post-contact pieces 2a, 2b of the contact member 2 from the back surface side are formed in the plug insertion port 1a. These insertion spaces 1a1, 1a2 are configured in a slit shape at an angular interval of 180 degrees in the circumferential direction of the plug insertion port 1a. In addition, the plug insertion port 1a has a semicircular mounting base 1a3 for the contact member 2 at one end thereof and a mounting base for the terminal member 3 at the other end at the back end of the plug insertion opening 1a. 1a4 is formed. The mounting base 1a4 for the terminal member 3 is formed with a mounting groove 1a5 for locking the mounting tongue 3b protruding from the side of the base 3a of the terminal member 3.

  Further, on the back side of the jack housing 1, as shown in FIG. 1 (c), the terminal member is located near the one insertion space 1 a 1 and outside the mounting base 1 a 4 for the terminal member 3. 3 is formed with a mounting groove 1a6 for inserting and fixing the side portion of the postscript contact piece 3c, close to the one insertion space 1a1 and outside the portion where the contact piece 3c is arranged and for the terminal member 3 A moving space 1a7 is formed in a portion outside the mounting base 1a4. The moving space 1a7 can accommodate a movable contact piece 2c formed on one contact piece 2a of the contact member 2 so as to be movable inward and outward.

  Furthermore, on the back side of the jack housing 1, as shown in FIGS. 1 (b) and 1 (c), the contact is provided on the back side corresponding to the front and back sides where the locking notches 1c are formed. A positioning groove 1d for positioning the post-terminal portion 2d of the member 2 and a positioning groove 1e for positioning the post-terminal portion 3d of the terminal member 3 are formed, and a fixing groove 1f for inserting and fixing the post-joining piece 2e of the contact member 2 is formed. The positioning groove 1d extends in parallel to the adjacent side. The extension destination of the fixed groove 1f is in the vicinity of the moving space 1a7. The groove extending direction of the positioning groove 1e for the terminal portion 3d of the terminal member 3 is the direction of the insertion space 1a2.

  The contact member 2 is made of a conductive band-like metal having elasticity, and is shown in FIGS. 1 (c) and 2 (a), (b), (c), (d), and (e). Thus, it is a component provided with two contact pieces 2a and 2b, a movable contact piece 2c, a regulating piece 2f, plug contact projections 2g and 2h, a base portion 2i, a terminal portion 2d, and a coupling piece 2e.

  The two contact pieces 2a and 2b are projected in a U shape from the base 2i as shown in FIGS. 1 (c) and 2 (a), (b), (c), (d) and (e). In addition, each element is formed by bending it at 90 degrees from the middle thereof, and the interval between the inner edges of both contact pieces 2a, 2b is made to coincide with the inner diameter of the plug insertion port 1a, and one of the contacts The other contact piece 2b can be inserted into the former in the insertion space 1a1, 1a2 in which the piece 2a is formed on the peripheral side of the plug insertion opening 1a.

  The plug contact protrusions 2g and 2h are formed at the tips of the contact pieces 2a and 2b as shown in FIGS. 1 (c) and 2 (a), (b), (c), (d) and (e). It is formed in a protruding state on the inner edge side. The plug contact protrusion 2g having a large protrusion amount in the plug contact protrusions 2g and 2h is formed on the former of the contact pieces 2a and 2b, and the plug contact protrusion 2h having a small protrusion amount is formed on the latter. To do. These plug contact protrusions 2g and 2h are in a state where, when the contact pieces 2a and 2b are inserted into the insertion spaces 1a1 and 1a2, the plug p protrudes into the plug insertion port 1a when the plug p is not inserted into the plug insertion port 1a. become.

  The movable contact piece 2c is one of the two contact pieces 2a and 2b as shown in FIG. 1 (c) and FIGS. 2 (a), (b), (c), (d) and (e). It is formed near the middle of the former. The width of the contact piece 2a is set to a dimension that slightly exceeds the thickness of the peripheral side of the plug insertion port 1a, and the movable contact piece 2c is formed outside the contact piece 2a having such a width. It protrudes in the direction orthogonal to the width direction on the edge side. That is, when the contact piece 2a is inserted into the insertion space 1a1, the movable contact piece 2c is positioned in the moving space 1a7 in a direction substantially parallel to the peripheral side of the plug insertion port 1a. The contact piece 2a is constituted.

  The restriction piece 2f is formed near the middle of the contact piece 2b as shown in FIGS. 1C and 2A, 2B, 2C, 2D, and 2E. The width of the contact piece 2b is also set to a dimension that slightly exceeds the thickness of the cylindrical peripheral side wall in the plug insertion slot 1a. The restricting piece 2f is formed outside the contact piece 2b thus configured. It protrudes in the direction orthogonal to the width direction on the edge side. That is, the restricting piece 2f is formed on the contact piece 2b so as to face the movable contact piece 2c formed on the contact piece 2a, and the contact piece 2b is inserted into the insertion space 1a2. In such a case, the inner surface of the plug insertion port 1a is in contact with the outer peripheral surface.

  As shown in FIG. 1 (c) and FIGS. 2 (a), (b), (c), (d), and (e), the coupling piece 2e is connected to the contact piece 2a from the side edge of the base 2i, 2b is a plate-like member that is bent in the same direction as that of 2b, and has a fixed piece 2e1 that is raised obliquely outward at the remaining one side that is cut out and joined on three sides at approximately the center. When the coupling piece 2e is inserted into the fixing groove 1f of the jack housing 1, the insertion state can be maintained by the fixing piece 2e1.

  As shown in FIGS. 1 (c) and 2 (a), 2 (b), (c), (d), and (e), the terminal portion 2d is connected to the contact portion on both sides of the coupling piece 2e. It is a strip-shaped member extended from the side part far from the pieces 2a, 2b. A “-”-shaped bent portion is formed in the middle. In the middle of the base 2i side, it is inserted and locked in the positioning groove 1d of the jack housing 1.

  The above contact member 2 is attached to the jack housing 1 as shown in FIGS. 1 (a) and 1 (b) and FIGS. 4 (a), 4 (b) and 4 (c). The bases of the contact pieces 2a and 2b are brought into contact with the mounting base 1a3 on the back side of the jack housing 1, and at the same time, one contact piece 2a is inserted into one insertion space 1a1 and the other contact piece 2b is inserted into the other. The movable contact piece 2c is inserted into the space 1a2, and the movable contact piece 2c is positioned in the moving space 1a7. The regulating piece 2f is positioned so that its inner surface is in contact with the outer peripheral surface of the plug insertion port 1a. At the same time, the coupling piece 2e is inserted and fixed in the fixing groove 1f, and the terminal member 2d is inserted in the positioning groove 1d.

  The terminal member 3 is made of a conductive belt-like metal and is shown in FIGS. 1 (c) and 3 (a), (b), (c), (d), (e), and (f). Thus, it is a component provided with the base part 3a, the attachment tongue piece 3b, the contact piece 3c, and the terminal part 3d.

  The base 3a is provided on the back surface of the jack housing 1 as shown in FIGS. 1 (c) and 3 (a), (b), (c), (d), (e), (f). This is a plate-like member that corresponds to the shape of the upper surface of 1a4 and that has an inner portion formed in a partial arc shape having a larger diameter than the plug insertion port 1a. The mounting tongue piece 3b is a tongue piece member that protrudes slightly from the outer side of the base part 3a and hangs down. The base part 3a is placed on the outer side of the mounting base 1a4 with the base part 3a placed on the mounting base 1a4. It is configured to be insertable into the formed mounting groove 1a5. The contact piece 3c is a tongue-like member that hangs down from the tip of the base portion 3a, and is mounted in a positional relationship adjacent to the mounting base 1a4 in a state where the base portion 3a is placed on the mounting base 1a4. The side portion is inserted into the groove 1a6, and the remaining portion is configured to be inserted into the moving space 1a7.

  The terminal portion 3d is a belt-like member that rises from the rear side edge of the base portion 3a and extends. A crank-like bent portion is formed in the middle, and the middle of the rear portion is inserted and locked in the positioning groove 1e of the jack housing 1.

  The terminal member 3 described above is attached to the jack housing 1 as shown in FIGS. 1 (a) and 1 (b) and FIGS. 4 (a), 4 (b) and 4 (c). The base portion 3a is brought into contact with the mounting base 1a4 on the back surface side of the jack housing 1, and at the same time, the mounting tongue 3b is inserted into the mounting groove 1a5, and the side piece 3c is mounted on the side. The remaining portions are inserted into the moving space 1a7 in the groove 1a6. At the same time, the terminal portion 3d is inserted and locked in the positioning groove 1e of the jack housing 1.

  In the above state, as shown in FIG. 1 (b) and FIGS. 4 (a), (b), and (c), the contact piece 3c has an outer surface of a portion inserted into the moving space 1a7. Similarly, the movable contact piece 2c inserted in the moving space 1a7 can be brought into and out of contact with the inner surface. When the plug p is not inserted into the plug insertion slot 1a, the contact piece 2a is in a non-retreating state, and the movable contact piece 2c and the contact piece 3c maintain a contact state.

  The earth cap 4 is made of a conductive metal. As shown in FIGS. 1 (a), (b), (c) and FIG. 4 (c), a cylindrical cap body 4c, and thereafter A flange portion 4d projecting in the circumferential direction from the end, a fixed tongue piece 4a bent at a right angle from a part of the flange portion 4d and projecting rearward, and a portion of the flange portion 4d opposite to the fixed tongue piece 4a It is the component comprised by the terminal part 4b protruded from.

  The cap body 4c has a flange-like portion projecting inward at the tip, and a bush 4e made of insulating plastic can be fitted inside the portion. Needless to say, the inner diameter of the bush 4e is slightly larger than the outer diameter of the target plug p. The fixed tongue piece 4a can be inserted into a locking groove on the front surface of the jack housing 1 when the cap body 4c is externally mounted on the mounting cylindrical portion 1b of the jack housing 1 at an appropriate circumferential angle. The flange portion 4d is configured as described above. Further, the terminal portion 4b is configured to extend outward from a corresponding portion of the flange portion 4d and hang down to the same extent as the fixed tongue piece 4a. Similarly, the cap body 4c is attached to the mounting cylindrical portion 1b. When it is packaged, the positional relationship is such that it can be locked to the locking notch 1c.

  The above earth cap 4 is a mounting cylinder in which the cap body 4c is projected to the front side of the jack housing 1 as shown in FIGS. 1 (a), (b), (c) and FIG. 4 (c). The flange portion 4d is brought into contact with the front surface of the jack housing 1 at the same time, and the fixed tongue piece 4a is inserted and locked into the locking groove, and the terminal portion 4b is locked into the locking notch 1c. Lock. The cap body 4c is externally mounted on the mounting cylindrical portion 1b after the bush 4e is fitted to the tip portion thereof.

  Therefore, according to the pin jack of this embodiment, when the plug p is inserted into the plug insertion slot 1a, as shown in FIG. 4 (a) and indicated by the wavy line in FIG. 4 (c), the plug insertion slot 1a The plug contact protrusions 2g and 2h that have been in the advanced state are located within the range of the diameter by the plug p that enters between them, as indicated by solid lines in FIGS. 4 (b) and 4 (c). At the same time, the plug p is pressed and held from both sides by the plug contact protrusions 2g and 2h. The plug p is also electrically coupled to them.

  Further, when the plug contact protrusions 2g and 2h are pushed and expanded as described above, the contact pieces 2a and 2b constituting them are also expanded, and FIG. 4 (b) and FIG. 4 (c). As indicated by the solid line, the movable contact piece 2c formed on the contact piece 2a is moved away from the contact piece 3c formed on the terminal member 3 by the retreating operation of separating the contact piece 2a from the plug insertion port 1a. Thereby, the switch comprising the movable contact piece 2c and the contact piece 3c is controlled to open.

  As described above, the plug contact protrusion 2g formed on the contact piece 2a has a larger protruding amount into the plug insertion opening 1a than the other plug contact protrusion 2h. The retreating operation of the contact piece 2a that occurs when inserting the contact piece 2a becomes sufficiently large, and accordingly, the distance of the movable contact piece 2c formed on the contact piece 2a from the contact piece 3c of the terminal member 3 also increases. ing. Therefore, the opening operation of the movable contact piece 2c and the contact piece 3c at this time is reliable.

  The electrical connection on the plug p side with the earth cap 4 is performed by a cylindrical contact portion (not shown) that is concentric with the plug p. This is a known configuration.

  When the plug p is removed from the plug insertion slot 1a, the two contact pieces 2a and 2b are made of the material as shown in FIG. 4 (a) by a solid line and FIG. 4 (c) by a wavy line. It returns to its original position due to its elasticity and the electrical connection between the plug p and the contact pieces 2a, 2b is released, and at the same time, the movable contact piece 2c of the corresponding contact piece 2a and the contact piece of the terminal member 3 3c comes into contact with each other, and these electrical couplings are formed. As a result, the switch comprising the movable contact piece 2c and the contact piece 3c is controlled to be closed.

  Further, of the contact pieces 2a and 2b, the contact piece 2b not provided with the movable contact piece 2c is provided with a regulating piece 2f that comes into contact with the outer peripheral surface of the plug insertion port 1a. Therefore, the movable contact piece 2b is surely brought into contact with the contact piece 3c of the terminal member 3 when the plug p is not inserted into the plug insertion port 1a. Be regulated.

  In particular, when the plug p is pulled out and the movable contact piece 2c and the contact piece 3c in the opened (separated) state are about to be closed (contacted), the regulating piece 2f is shown in FIGS. As shown in b), in order to restrict the movement of the contact piece 2b that does not constitute the movable contact piece 2c toward the contact piece 2a that constitutes the movable contact piece 2c, the latter contact piece 2a and the movable piece constituted thereby The elastic pullback action of the contact piece 2c toward the plug insertion port 1a is ensured, and the contact of the movable contact piece 2c with the contact piece 3c of the terminal member 3 is surely performed.

  In the pin jack of this embodiment, as described above, the operation of separating the movable contact piece 2c from the contact piece 3c is performed by inserting the plug of the contact piece 2a disposed in the insertion space 1a1 on the peripheral side of the plug insertion port 1a. Since the advancing / retreating operation accompanying the removal is performed, the direction of the advancing / retreating operation, that is, the direction of the detaching / moving operation of the movable contact piece 2c and the contact piece 3c is relative to the axis of the plug insertion port 1a Are perpendicular to each other. Therefore, there is no need for a space for the operation in the thickness direction of the pin jack, and a thin pin jack can be configured.

  The two contact pieces 2a, 2b are formed to protrude from the base 2i of the contact member 2 in a U shape, and the distal end sides thereof are insertion spaces 1a1, 1a2 which are portions facing each other on the peripheral side of the plug insertion port 1a. In addition to being disposed inside, the lower part thereof is bent, and the lower components are arranged along the back side of the jack housing 1, so that a pin jack having a smaller thickness can be formed. .

(a) is the perspective view seen from the front side of the pin jack of an Example, (b) is the perspective view seen from the back side, (c) is the exploded perspective view seen from the back side. (a) is a side view of the contact member of the embodiment, (b) is a view as seen from an arrow A in (a), (c) is a view as seen from an arrow B in (b), and (d) is a partially cutaway view of (b). C arrow figure, (e) is a perspective view. (a) is a left side view of the terminal member of the embodiment, (b) is a front view, (c) is a view from arrow D in (b), (d) is a view from arrow E in (b), (e) Is a bottom view, and (f) is a perspective view. (a) is back explanatory drawing of the state where the plug of the pin jack of the embodiment is not inserted, (b) is a back explanatory view of the state where the plug is inserted, (c) is a cross sectional explanation of the FF line of (b) Figure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Jack housing 1a Plug insertion slot 1a1, 1a2 Insertion space 1a3 Mounting base for contact members 1a4 Mounting base for terminal members 1a5 Mounting groove for mounting tongue 1a6 Mounting groove for fixing contact 1a7 Moving space 1b Mounting cylinder 1c Locking cutout 1d Positioning groove for terminal part of contact member 1e Positioning groove for terminal part of terminal member 1f Fixed groove for connecting piece of contact member 2 Contact member 2a, 2b Contact piece 2c Movable contact piece 2d Contact member Terminal portion 2e Contact member coupling piece 2e1 Contact member coupling piece 2f Restriction piece 2g Plug contact projection 2h with larger protrusion 2h Plug contact projection 2 with less projection 2i Base of contact member 3 Terminal member 3a Terminal Base part 3b Mounting tongue 3c Contact 3d Terminal part 4 Ground cap 4a Fixed tongue 4b Ground cap terminal 4c Cap body 4d Flange 4e Bush p Plug

Claims (4)

In a connection device comprising at least a housing having a plug insertion opening and a contact member disposed on each housing,
The contact member is composed of a base, a pair of contact pieces projecting and extending from the base to the front end side in a U shape, and a terminal portion extending to the rear end of the base, and both contact pieces of the contact member Are disposed at mutually opposing portions on the peripheral side of the plug insertion port, and a portion of the contact member located on the back side of the housing is arranged along the back surface of the housing. apparatus. Arranged on the housing is a terminal member provided with a contact piece that comes into contact with the movable contact piece, which will be described later.
Further, a plug contact protrusion protruding into the plug insertion opening is formed on the pair of contact pieces, and one of the contact pieces is in contact with the contact piece of the terminal member so as to be detachable and connected to the plug insertion opening. The connecting device according to claim 1, wherein a movable contact piece that is separated from the contact piece of the terminal member by the operation of the plug contact protrusion retracted by insertion of the plug is provided.   The plug contact protrusion formed on the contact piece provided with the movable contact piece among the plug contact protrusions is configured to have a larger protrusion amount into the plug insertion hole than the plug contact protrusion formed on the other contact piece. Connection device.   Of the contact pieces, the contact piece not provided with the movable contact piece is regulated so that the movable contact piece comes into contact with the contact piece of the terminal member when the plug is not inserted into the plug insertion port. A restricting piece is provided that restricts the contact piece that is locked to the corresponding part of the housing and does not have the movable contact piece from moving to the contact piece side having the movable piece. The connecting device according to claim 2 or 3.

Images