JP2010080111A - Fitting type connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve fitting/removing operability of both connectors, without deforming a contact in a housing by smoothly fitting mutual housings, even when joining the mutual housings of plug type and receptacle type both connectors in a state of having a rotation angle. <P>SOLUTION: This fitting type connector is constituted so that a plug side contact 130 and a receptacle side contact 30 are arranged in a plug housing 120 and a receptacle housing 20 by extending in the fitting/removing direction of a plug part 121 and a receiving space S1, and when joining the plug housing 120 and the receptacle housing 20, the length in the fitting/removing direction in the plug side contact 130, the receptacle side contact 30, an erroneous insertion preventive engaging projection part 27 and an engaging recessed groove 124 is set so that contact with the plug side contact 130 and the receptacle side contact 30 starts after starting fitting with the erroneous insertion preventive engaging projection part 27 and the engaging recessed groove 124. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fitting type connector including a plug type connector and a receptacle type connector having housings that are shaped to fit with each other.

  The mating connector includes a plug connector having a contact in a housing having a protruding plug portion, and a contact in a housing having a shape for receiving the plug portion of the plug connector. It consists of a receptacle-type connector, and when the housings of both connectors are joined (fitted), their contacts come into contact with each other so that both connectors are electrically connected (for example, see Patent Document 1). reference). In such a fitting-type connector, generally, the plug portion of the plug-type connector is inserted straight into the housing of the receptacle-type connector, and both the connectors are fitted and detached. A drawer in which a plug-type connector and a receptacle-type connector are respectively attached to a movable side member that is opened and closed, and the plug-type connector is engaged and disengaged in a state where the plug-type connector is rotated (tilted) with respect to the receptacle-type connector. There is also a mating connector called a connector.

In such a mating connector, when a large number of contacts are provided, they are mated only when the plug housing and the receptacle housing are coupled in the correct orientation so that they are not reversed and connected. There has been known a connector in which a convex portion and a concave groove for preventing erroneous insertion are provided in a receptacle housing and a plug housing. In the drawer connector, the tip of the plug part of the plug type connector and the opening side end of the housing of the receptacle type connector are formed in a taper shape, so that both connectors can be inserted and removed when the rotation angle is set. In order to absorb misalignment due to the opening and closing of the movable side member, the fixed side member or the movable side member is fixed so that it can be moved somewhat to improve the fitting / detaching operability. Are known. In a drawer connector, a contact (terminal) provided in a plug-type connector or a receptacle-type connector generally has a pin header shape.
JP 2006-156020 A

  However, in such a drawer connector (fitting type connector), the housings of both connectors are coupled (fitted) in a state where the rotation angle is set. There was a problem that the housing was damaged due to the collision or the contacts (terminals) provided in the housing collided with each other and deformed (buckled).

  The present invention has been made in view of such a problem, and even when the housings of both connectors are coupled with each other at a rotation angle, the housings can be smoothly fitted together and the contacts in the housing are deformed. An object of the present invention is to provide a fitting-type connector that is difficult and has improved detachability of both connectors.

  In order to achieve the above object, in the fitting type connector according to the present invention, a plug-type connector comprising a plug-side contact in a plug housing having a projecting plug portion, and the plug portion opened on one side And a receptacle connector having a receptacle-side contact on a receptacle housing having a fitting space (for example, receiving space S1 in the embodiment), and the plug portion is fitted into the fitting space. When the plug housing and the receptacle housing are coupled together, the plug-side contact and the receptacle-side contact come into contact with each other so that the plug-type connector and the receptacle-type connector are electrically connected. In the mating connector, the plug contact and the receptacle contact The plug housing and the receptacle housing are disposed so as to extend in the fitting / removing direction of the plug portion and the fitting space, so that the plug housing and the receptacle housing are coupled in the correct orientation. Protrusions (for example, engaging convex portions 27, 27 in the embodiment) and concave grooves (for example, engaging concave grooves 124, 124 in the embodiment) that are fitted only when the plug is inserted into the plug. Extending in the fitting / removing direction on the fitting space side of the plug portion of the housing and the side wall (for example, the side walls 26, 26 in the embodiment) forming the fitting space in the receptacle housing, When the plug housing and the receptacle housing are coupled, the plug is inserted after the insertion of the convex portion for preventing erroneous insertion and the concave groove is started. The plug-side contact and the receptacle-side contact and the length in the fitting / removing direction of the projection and the concave groove for preventing erroneous insertion are set so that contact between the side contact and the receptacle-side contact begins. The

  In the fitting connector having the above configuration, the distal end portion of the plug portion in the plug housing is formed in a tapered shape that narrows from the proximal end side toward the distal end side, and the tapered end portion has a corner. The tip end of the side wall of the receptacle housing is formed in a tapered shape that is inclined downward toward the fitting space, and the tapered end portion has a corner. It is preferably formed in a rounded end shape.

  In the fitting connector having the above-described configuration, it is preferable that the bottom surface of the plug housing, which is a surface facing the counterpart member when the plug connector is fixed to the counterpart member, is formed flat.

  In the mating connector according to the present invention, when the plug housing and the receptacle housing are coupled, the contact between the plug-side contact and the receptacle-side contact after the fitting of the convex portion for preventing erroneous insertion and the concave groove starts. The length in the fitting / removing direction of the plug-side contact and the receptacle-side contact, and the convex insertion and concave grooves for preventing erroneous insertion is set so that. According to such a configuration, the housings of both connectors are rotated because the housings are aligned by the protrusions and the grooves for preventing erroneous insertion before the plug-side contacts and the receptacle-side contacts come into contact with each other. Even in the case of coupling in an angled state, it is possible to reduce the possibility that the contacts will collide and deform (buckle).

  Further, the distal end portion of the plug portion in the plug housing is formed in a tapered shape that narrows from the proximal end side toward the distal end side, and the tapered end portion is formed in a rounded end shape with rounded corners. The front end portion of the side wall of the receptacle housing is formed in a tapered shape inclined downward toward the fitting space, and the tapered end portion is formed in a rounded end shape with rounded corners. In this case, even when the housings of both connectors are coupled with each other at a rotational angle (tilted state), the respective tip portions are formed in a tapered shape. The plug portion can be fitted into the fitting space of the receptacle housing while allowing inclination, and the receptacle type connector and the plug type connector can be coupled. Furthermore, since the tapered end is rounded with a rounded corner (so-called “R”), the plug fits smoothly into the receptacle housing fitting space. Can be made.

  In addition, it is preferable that the bottom surface of the plug housing, which is a surface facing the counterpart member when the plug type connector is fixed to the counterpart member, is formed flat, and the plug type connector and the receptacle type connector are formed in this way. The mating member 6 may be bent due to the impact at the time of fitting, but even in this case, since the impact can be received on the entire bottom surface of the plug housing, the plug against the impact applied by the fitting operation of both connectors The strength of the mold connector is improved. This is particularly effective when both connectors are frequently engaged and disengaged, such as a drawer connector.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. A fitting connector 1 according to an embodiment of the present invention is shown in FIG. This fitting type connector 1 has a shape for receiving a plug type connector 110 configured by including a plug side contact 130 in a plug housing 120 having a protruding plug part 121 and the plug part 121 of the plug type connector 110. The receptacle housing 20 includes a receptacle-type connector 10 including a receptacle-side contact 30.

  First, the receptacle type connector 10 will be described with reference to FIGS. The receptacle-type connector 10 is configured as a standing-type connector whose engagement direction with the mating connector (plug-type connector 110) is perpendicular to the substrate 5 (see FIG. 1). And a receptacle housing 20 having a coupling portion (plug portion insertion port 21) with the mating connector on the side opposite to the substrate 5, and a plurality (24 in this case) of receptacle-side contacts held in the receptacle housing 20 30. In the following description, for the sake of convenience, the long dimension direction viewed from the connecting portion with the mating connector, that is, the plug portion insertion port 21 side is “left-right direction”, and the short dimension direction viewed from the plug portion insertion port 21 side is “ The direction of engagement with the mating connector (plug-type connector 110) is defined as "vertical direction".

  The receptacle housing 20 is formed in a rectangular parallelepiped shape as a whole using an electrically insulating material such as resin, and its bottom wall 28 is attached on the substrate 5 (see FIG. 1). In the bottom wall 28 of the receptacle housing 20, as shown in FIG. 2C, a plurality of contact insertion holes 22 penetrating vertically are arranged in the left-right direction (here, the number is the same as the number of receptacle-side contacts 30). Twenty-four contact insertion holes 22 are formed on the left and right sides, arranged in two rows in the front and rear, and the receptacle-side contacts 30 are inserted from the contact insertion holes 22 and attached to the receptacle housing 20. In addition, a positioning protrusion 28a that protrudes downward is formed on the lower surface of the bottom wall 28, and screw insertion holes 28b that penetrate vertically are formed on the left and right sides of the bottom wall 28. In addition, the lower surface of the bottom wall 28 is formed in the flat surface as a whole, as shown in FIG.2 (b).

  As shown in FIG. 4B, the lower end portion 22a of the contact insertion hole 22 is formed in a taper shape that expands downward, whereby the receptacle-side contact 30 is inserted into the contact insertion hole 22 and the receptacle housing. The work at the time of attaching to 20 becomes easy. Further, as shown in FIG. 3A, a locking step portion 22b is formed at the intermediate portion of the contact insertion hole 22 so that the upper portion of the contact insertion hole 22 is narrower than the lower portion in the front-rear direction (short dimension direction). Further, as shown in FIG. 4B, a step portion 22c is formed so that the upper portion of the contact insertion hole 22 is slightly narrower than the lower portion in the left-right direction (long dimension direction).

  As shown in FIG. 2 (a), the receiving space (the space for receiving the plug portion 121 of the plug-type connector 110 which is the mating connector) S formed in the receptacle housing 20 is the plug portion insertion port 21 side ( The front wall 23 and the rear wall 24 facing the short dimension direction (front-rear direction) viewed from above and the long dimension direction (left-right direction) viewed from the plug portion insertion port 21 side. It consists of a space surrounded by left and right side walls 26, 26 and a bottom wall 28, and the plug portion insertion port 21 serves as an entrance to the receiving space S1. In the receptacle housing 20, the front wall 23, the rear wall 24, the side walls 26 and 26, and the bottom wall 28 are integrally formed in a rectangular parallelepiped shape as described above.

  As shown in FIG. 3 and FIG. 4A, the front wall 23 and the rear wall 24 of the receptacle housing 20 have a plurality (here, the same number of receptacle-side contacts 30) on the inner side (reception space S1 side). A total of 24 (12 on each wall) vertically extending contact locking grooves 25 are formed side by side in the horizontal direction, and each contact locking groove 25 is formed on the bottom wall 28 of the receptacle housing 20. The contact insertion holes 22 communicate with each other. Moreover, the upper end part (plug part insertion port 21) of the front wall 23 and the rear wall 24 is formed in the taper shape which inclines below toward the receiving space S1, and also the taper end part is a corner. It is formed in a rounded end shape (so-called “R”).

  As shown in FIGS. 3 and 4A, the side walls 26 and 26 of the receptacle housing 20 are displaced from the center position in the front-rear direction (short dimension direction) toward the front wall 23 or the rear wall 24 (here. Then, engaging projections 27 and 27 are formed so as to face each other at a position shifted to the front wall 23 side and project upward to the receiving space S1 side. Moreover, the upper end part (plug part insertion port 21) of the side walls 26 and 26 is formed in the taper shape which inclines below toward the receiving space S1 side similarly to the above-mentioned front wall 23 and the rear wall 24. As shown in FIG. Further, the tapered end portion is formed in an end shape that is rounded (so-called “R”). Note that the upper end portions of the engaging convex portions 27 are also formed in an end shape with “R”.

  Each receptacle-side contact 30 is formed in a vertically long flat plate shape using a conductive material such as metal, and is further formed by performing a surface treatment (plating) for coating a thin film such as gold (Au) on the surface. As shown in FIG. 3 (b), the front of the receptacle housing 20 in a state where a part of the front end side or the rear end side (front and rear walls 23, 24 side) of the receptacle-side contact 30 is fitted in the contact locking concave groove 25. The wall 23 and the rear wall 24 are arranged extending vertically. As shown in FIG. 2A, the flat-plate-like receptacle-side contact 30 arranged in this way is located in the reception space S1 of the receptacle housing 20 when viewed from the plug insertion port 21 side (upper side). It extends from the wall 23 or the rear wall 24 in the front-rear direction and is held. The thickness (width in the left-right direction) of the receptacle-side contact 30 is substantially the same as the width in the left-right direction above the step portion 22 c in the contact insertion hole 22.

  As shown in detail in FIG. 5, the receptacle-side contact 30 is formed in the contact insertion hole 22 formed below the contact portion 31 and the contact portion 31 exposed in the receiving space S <b> 1 when held in the receptacle housing 20. The locking portion 32 is positioned, and the lead portion 33 formed to extend downward from the locking portion 32 is integrally formed.

  One of the front end side and the rear end side of the contact portion 31 is fitted into the contact locking groove 25 of the front wall 23 or the rear wall 24 when the receptacle-side contact 30 is attached to the receptacle housing 20, and The other is in contact with the contact portion 131 of the plug-side contact 130 when the receptacle-type connector 10 and the plug-type connector 110 are coupled (see FIG. 13). In addition, on the side of the contact portion 31 that is inserted into the contact locking groove 25 (that is, the side that does not contact the contact portion 131 of the plug-side contact 130), the top and bottom are cut out from the one end side toward the center portion. An extending cutout 31a is formed. By forming the notch 31a, it is possible to reduce the plating area, thereby achieving cost reduction. The upper end portion 31b of the contact portion 31 is formed in a tapered shape that narrows upward like the above-described front wall 23 and the like, and the tapered end portion is rounded with a rounded corner (so-called so-called front wall 23). It is formed in an end shape (with “R”).

  The locking portion 32 is wider in the front-rear direction than the contact portion 31, and protrudes from the front end side or the rear end side of the contact portion 31 when the receptacle-side connector 30 is viewed from above. 32a is formed. A locking projection 34 a that slightly protrudes in the left-right direction (the thickness direction of the receptacle-side contact 30) is formed on one of the left and right surfaces of the locking portion 32, and the locking projection 34 a is formed on the receptacle housing 20. The engaging portion 32 is formed with a step substantially the same as the step of the step portion 22 c formed in the intermediate portion of the contact insertion hole 22. Locking protrusions 34b and 34b that slightly protrude in the front-rear direction are formed at both front and rear ends of the lock part 32.

  The lead portion 33 extends so as to protrude downward from the bottom wall 28 of the receptacle housing 20 when the receptacle-side contact 30 is attached to the receptacle housing 20, and the receptacle-type connector 10 (receptacle housing 20) is mounted on the board. After being mounted on the board 5, it is joined to a wiring pattern (not shown) of the board 5 by soldering or the like.

  The receptacle-side contact 30 is inserted into the contact insertion hole 22 formed in the bottom wall 28 of the receptacle housing 20 from below, and the side (front end side or rear end) where the notch 31a of the contact portion 31 is formed as described above. Side part) is inserted into a contact locking groove 25 formed in the front wall 23 or the rear wall 24 of the receptacle housing 20, and viewed from the plug part insertion port 21 side (upper side), the receptacle housing The 20 receiving spaces S <b> 1 extend from the front wall 23 or the rear wall 24 in the front-rear direction and are held. As a result, the receptacle-side contact 30 is firmly fixed in the receptacle housing 20 at the correct position, so that it is difficult to be deformed (buckled).

  At this time, in the locking portion 32, the upper surface of the locking step portion 32 a comes into contact with the lower surface of the locking step portion 22 b in the contact insertion hole 22 and restricts further upward movement of the receptacle-side contact 30. Since the locking projection 34a and the locking projection 34b press the side wall of the contact insertion hole 22 and restrict the movement of the receptacle-side contact 30 in the front-rear, left-right, and downward directions, the plug-side connector 110 is detached from the receptacle-type connector 10. It is possible to reliably prevent the receptacle-side contact 30 from coming out of the receptacle housing 20 at the time of leaving. Should the receptacle-side contact 30 be pulled out to the receiving space S1 side (upward) for some reason, it will come out of the receptacle housing 20 by coming into contact with the upper end of the contact locking groove 25. It is prevented.

  The receptacle-type connector 10 having the receptacle-side contact 30 attached to the receptacle housing 20 in this manner is mounted on the substrate 5 first by positioning protrusions protruding downward from the bottom wall 28 of the receptacle housing 20. 28a (see FIG. 2) is inserted into a positioning hole (not shown) formed in the substrate 5 from above to perform positioning on the substrate 5, and then vertically penetrates the left and right side portions of the bottom wall 28. This is performed by fixing to the substrate 5 using a fastening screw (not shown) inserted into the formed screw insertion hole 28b. Then, the board 33 of the receptacle-type connector 10 is joined by soldering or the like to the lead pattern 33 of the receptacle-side contact 30 that protrudes downward from the bottom wall 28 of the receptacle housing 20 to the wiring pattern (not shown) of the board 5. Installation on 5 ends.

  Next, a plug-type connector 110 that is a mating connector used in combination with the receptacle-type connector 10 will be described with reference to FIGS. This plug-type connector 110 includes a plug housing 120 formed to extend horizontally so as to correspond to the width direction (left-right direction) of the receptacle-type connector 10, and a plurality of (here, receptacle-side contacts) held by the plug housing 120. The number of plug-side contacts 130 is the same as the number of 30 (24). In the following description, for the sake of convenience, the connecting portion with the counterpart connector, that is, the long dimension direction viewed from the plug portion 121 side is “left-right direction”, and the short dimension direction viewed from the plug portion 121 side is “front-back direction”. The direction of engagement with the (receptacle connector 10) is defined as “vertical direction”.

  As shown in FIG. 6, the plug housing 120 is formed using an electrically insulating material such as a resin like the receptacle housing 20, and has a protruding shape that is inserted into the receiving space S <b> 1 of the receptacle connector 10. The plug portion 121 is integrally formed on a rectangular base portion 127 corresponding to the bottom wall 28 of the receptacle housing 20.

  The plug portion 121 is provided between the plug base portions 122 and 122 erected on the base portion 127 so as to be opposed to the left and right, and the contact holding for holding the plug-side contact 130 therein. The portion 123 is formed in a protrusion shape protruding from the base portion 127. As shown in FIGS. 6A and 7A, the side surfaces of the plug base portions 122, 122 in the left-right direction are shifted from the center position in the front-rear direction to the front side or the rear side (here, the rear side). Engagement grooves 124 and 124 extending vertically are formed respectively. The engaging concave grooves 124 and 124 are formed so that engaging convex portions 27 and 27 formed on the side walls 26 and 26 of the receptacle housing 20 are inserted when the receptacle-type connector 10 and the plug-type connector 110 are coupled. It has become. Note that the upper end portions of the engaging concave grooves 124 and 124 are also formed to extend in the front-rear direction, and the engaging convex portions 27 and 27 of the receptacle housing 20 are engaged with the upper end portions so that both the connectors 10 and 110 are engaged. Alignment in the front-rear direction is performed. As shown in FIGS. 6 and 7, the upper end portions 122a and 122a of the plug base portions 122 and 122 are formed in a tapered shape that narrows upward, and the tapered end portions are rounded by rounding. It is formed in an end shape (with a so-called “R”).

  As shown in FIG. 7, the contact holding part 123 of the plug part 121 has a plurality of storage spaces S2 extending vertically in the left-right direction (here, the total number of plug-side contacts 130 is 24 in total). Storage spaces S2 are formed on the left and right sides of the storage spaces S2 in two rows in the front and rear, and the plug-side contacts 130 are respectively stored in the storage spaces S2. As shown in FIG. 8, a plurality of contact insertion grooves 125 (here, the same as the number of plug-side contacts 130, 24 in total) 24 are formed on the upper surface and side surfaces of the contact holding portion 123. Yes. In addition, locking protrusions 126 that protrude into the respective accommodation spaces S2 are formed inside the contact holding portion 123 on the side facing the contact insertion groove 125 (see FIG. 7B). Similar to the plug base portion 122, the upper end portion 123a of the contact holding portion 123 is formed in a tapered shape that narrows upward, and the tapered end portion is rounded with a rounded corner (so-called "" It is formed in an end shape (with “R”).

  The base portion 127 is formed in a rectangular shape corresponding to the bottom wall 28 of the receptacle housing 20 as described above, and a plurality of contact insertion holes 128 penetrating vertically are provided in the left-right direction as shown in FIG. (Here, a total of 24 contact insertion holes 128, which are the same as the number of plug-side contacts 130, are arranged in 12 rows on the left and right sides in two rows). Each contact insertion hole 128 communicates with the accommodating space S2 formed in the contact holding portion 123 of the plug portion 121, and the plug-side contact 130 is inserted from the contact insertion hole 128 to be contact holding portion 123 (plug It is mounted in the housing 120). In addition, the lower surface 127a (surface in the vicinity of the contact insertion hole 128) of the base portion 127 is formed as a flat surface as shown in FIG.

  Further, as shown in FIG. 6, eyelet attachment holes 129 and 129 penetrating vertically are formed on the left and right sides of the base portion 127, and eyelet members 150 and 150 are inserted into the eyelet attachment holes 129 and 129. It is attached. The eyelet members 150 and 150 include a disk-like upper eyelet member 151 and a lower eyelet member 152 that is formed in a disk shape and has a shaft portion 152a extending upward from the center portion thereof, and the shaft portion 152a is an eyelet attachment hole. The diameter is smaller than the diameter of 129. In this eyelet member 150, the shaft portion 152a of the lower eyelet member 152 is inserted into the eyelet attachment hole 129 from below, the upper eyelet member 151 is attached to the upper end portion of the shaft portion 152a, and the base portion 127 is attached by the upper and lower eyelet members 151, 152. It is sandwiched between the upper and lower eyelet members 151 and 152 and the base part 127 with a slight gap therebetween, and the base part 127 is formed by a shaft part 152a formed with a smaller diameter than the gap and the eyelet attachment hole 129. It is possible to move with respect to. The bottom surface of the eyelet member 150 (the lower eyelet member 152) attached in this way is configured to slightly protrude below the lower surface 127a of the base portion 127. In addition, a bolt insertion hole 153 is formed in the central portion of the eyelet members 150 and 150 (upper and lower eyelet members 151 and 152) through the shaft portion 152a.

  Each plug-side contact 130 is formed by bending a vertically long flat plate into a U shape as a whole using a conductive material such as metal, and further, a surface treatment (plating) for coating a thin film such as gold (Au) on the surface. And the U-shaped opening side faces the contact insertion groove 125 formed in the contact holding portion 123 of the plug portion 121 in the plug housing 120, and is in the accommodation space S2 of the contact holding portion 123. It is extended and accommodated. As shown in detail in FIGS. 9 and 10, the plug-side contact 130 includes a contact portion 131 formed on the tip end side (an upper side when held in the plug housing 120), and a lower portion of the contact portion 131 (plug And an electric wire connecting portion 132 formed on the base contact side of the side contact 130 and connected to the electric wire 140 (see FIG. 7B).

  As described above, the contact portion 131 is formed on the upper portion (tip end side) of the U-shaped plug-side contact 130. Specifically, the opening side of the left and right side walls formed by the U-shape is from the upper side to the lower side. The contact portion 31 of the receptacle-side contact 30 is sandwiched from the left and right when the receptacle-type connector 10 and the plug-type connector 110 are coupled to each other. It is comprised so that it may contact 31 (refer FIG. 13). With this configuration, more stable electrical connection between both connectors becomes possible. Below the contact portion 131, when the plug-side contact 130 is accommodated in the accommodating space S2 of the plug portion 121 (contact holding portion 123), the width (height) dimension is close to the side wall in the contact holding portion 123. A formed engagement portion 133 is provided. A locking portion 134 is formed above the engaging portion 133 so as to protrude to the side opposite to the U-shaped opening side.

  The wire connection portion 132 is provided with a wire support portion 135 that supports the wire 140 so as to wrap around the wire 140 by left and right side walls configured in a U shape (see FIG. 7B). In the electric wire 140, an insulating coating 141 made of an insulating material constituting the periphery of the electric wire 140 is supported by the electric wire support portion 135, and a core wire (not shown) provided inside the insulating coating 141 is soldered to the electric wire connecting portion 132. Are joined together.

  The plug-side contact 130 is inserted into the contact insertion hole 128 formed in the base portion 127 of the plug housing 120 from below, and the U-shaped opening side is formed in the contact holding portion 123 of the plug portion 121 as described above. In a state of facing the contact insertion groove 125, the contact holding portion 123 is accommodated by extending vertically in the accommodation space S <b> 2. At this time, the engaging portion 134 formed on the plug-side contact 130 engages with the engaging protrusion 126 formed inside the contact holding portion 123 of the plug portion 121, and the plug-side contact 130 is moved downward. In addition to the restriction, the engaging portion 133 is close to the side wall in the contact holding portion 123 and restricts the movement of the plug-side contact 130 in the front-rear and left-right directions.

  As shown in FIG. 11, the plug-type connector 110 having the plug-side contact 130 attached to the plug housing 120 is attached to the mating member 6 as shown in FIG. Positioning on the mating member 6 is performed so that the bolt insertion holes 153 and 153 (see FIG. 6) of the eyelet members 150 and 150 attached to the mating member communicate with mounting holes (not shown) formed in the mating member 6. After that, the bolts 155 and 155 inserted from above into the bolt insertion holes 153 and 153 and the nuts 156 and 156 screwed into the bolts 155 and 155 are attached to the counterpart member 6.

  At this time, the lower surface 127 a of the base member 127 is not in contact with the upper surface (connector mounting surface) of the counterpart member 6 and is slightly lifted by the eyelet members 150, 150. In addition, since the upper and lower eyelet members 151 and 152 of the eyelet member 150 and the base portion 127 have a slight gap, and the shaft portion 152a is formed with a smaller diameter than the eyelet attachment hole 129 of the base portion 127, the plug-type connector 110 is movable with respect to the eyelet members 150, 150, that is, with respect to the counterpart member 6 (in a so-called floating structure). With this floating structure, even when the plug-type connector 110 and the receptacle-type connector 10 are fitted with each other, even if a slight misalignment occurs between the two connectors, the misalignment can be absorbed and the both connectors can be smoothly fitted. it can. Further, the counterpart member 6 may be bent due to an impact when the connectors 10 and 110 are fitted together. Even in this case, the lower surface 127 a formed on the flat surface of the base portion 127 contacts the counterpart member 6. In contact therewith, the entire bottom surface of the plug-type connector 110 can receive this impact, so that the strength of the plug-type connector 110 against the impact applied by the fitting operation of both the connectors 10 and 110 is improved.

  Next, a fitting state between the receptacle type connector 10 and the plug type connector 110 will be described. When the plug-type connector 110 is inserted from the plug insertion port 21 of the receptacle-type connector 10 with the plug part 121 facing downward (see FIG. 1), first, as shown in FIG. Engaging convex portions 27 and 27 formed on the side walls 26 and 26 of the receptacle housing 20 are fitted into engaging concave grooves 124 and 124 formed on the base portions 122 and 122. Specifically, the engagement convex portions 27 and 27 are engaged with the upper end portions (portions formed extending in the front-rear direction) of the engagement concave grooves 124, 124 to align the connectors 10, 110 in the front-rear direction. After the operation, the engaging protrusions 27 and 27 are inserted into the engaging grooves 124 and 124.

  Then, after the engagement convex portions 27 and 27 of the receptacle housing 20 start to be inserted into the engagement concave grooves 124 and 124 of the plug portion 121, it passes through the contact insertion groove 125 formed in the contact holding portion 123 of the plug portion 121. The contact portion of the plug-side contact 130 is arranged such that the receptacle-side contact 30 enters the contact holding portion 123, that is, the accommodation space S2, and the contact portion 131 of the plug-side contact 130 sandwiches the contact portion 31 of the receptacle-side contact 30 from the left and right. 131 and the contact part 31 of the receptacle side contact 30 contact (refer FIG. 13). Thereby, the electric wire 140 joined to the electric wire joining portion 132 of the plug-side contact 130 and the substrate 5 to which the receptacle-side contact 30 is attached are electrically connected via the both contacts 130 and 30. The signal transmission between the connectors 110 and 10 becomes possible.

  At this time, since the plug-side contact 130 contacts the surface of the receptacle-side contact 30 on the side perpendicular to the front wall 23 (rear wall 24), the housings of the connectors 10 and 110 are coupled with each other at an angle of rotation. Even in this case, the plug-side contact 130 is in contact with the surface on the side perpendicular to the front wall 23 (rear wall 24) of the receptacle-side contact 30, which is a surface parallel to the rotation direction, that is, within the surface parallel to the rotation direction. Since the contacts come into contact with each other, it is possible to reduce the possibility that the contacts 30 and 130 collide and deform (buckle) when the receptacle-type connector 10 and the plug-type connector 110 are coupled. Further, since the receptacle-side contact 30 is provided extending in a direction orthogonal to the front wall 23 (rear wall 24), the contact surface with the plug-side contact 130 is larger than when the contact is formed in a pin header shape. As a result, a more stable electrical connection between the plug-type connector 110 and the receptacle-type connector 10 becomes possible.

  As shown in FIG. 14, the plug-type connector 110 is tilted in the front-rear direction (corresponding to the left-right direction on the paper surface of FIG. 14) with respect to the receptacle-type connector 10, that is, with a rotation angle. Even when the plug portion 121 of the connector 110 is to be inserted into the plug insertion port 21 of the receptacle type connector 10, the plug insertion port 21 in the receptacle type connector 10 (the front wall 23, the rear wall 24 and the side wall of the receptacle housing 20). 26 and 26) and the upper end of the plug 121 in the plug-type connector 110 (the upper ends 122a and 122a of the plug bases 122 and 122) are formed in a tapered shape, so that a certain degree of inclination is allowed. The plug part 121 is fitted into the receiving space S1 of the receptacle housing 20, and the receptacle type connector It can be bound to the Kuta 10 and the plug-type connector 110. Further, since the tapered end portion is formed in an end shape that is rounded and rounded (so-called “R”), the plug portion 121 is smoother in the receiving space S1 of the receptacle housing 20. Can be fitted.

  As described above, in the mating connector 1 according to this embodiment, when the plug housing 120 and the receptacle housing 20 are coupled, the engagement convex portions 27 of the receptacle housing 20 are inserted into the engagement concave grooves 124 and 124 of the plug portion 121. , 27 are inserted into the receptacle housing 20 in the engagement grooves 124, 124 of the plug part contact 130, the receptacle side contact 30 and the plug part 121 so that the contact between the plug side contact 130 and the receptacle side contact 30 starts. The length in the fitting / removing direction (vertical direction) of the engaging convex portions 27, 27 is set. For this reason, before the plug-side contact 130 and the receptacle-side contact 30 come into contact with each other, the engagement grooves 124, 124 and the engagement protrusions 27, 27 are engaged to align the housings 20, 120. Therefore, even when the housings of both connectors 10 and 110 are coupled with each other at a rotation angle, the possibility that the contacts collide with each other and deform (buckling) can be reduced.

  Further, the tip end portion of plug portion 121 (upper end portions 122a and 122a of plug base portions 122 and 122) in plug-type connector 110 and plug insertion port 21 in receptacle-type connector 10 (front wall 23 and rear wall 24 of receptacle housing 20). And the upper ends of the side walls 26 and 26 are formed in a taper shape, so that even when the housings of both connectors are coupled with a rotation angle (tilted state), the plug is allowed with a certain degree of inclination. The portion 121 can be fitted into the receiving space S1 of the receptacle housing 20 so that the receptacle type connector 10 and the plug type connector 110 can be coupled. Further, since the tapered end portion is formed in a rounded shape with a rounded corner (so-called “R”), the plug portion 121 is more smoothly placed in the receiving space S1 of the receptacle housing 20. Can be fitted.

  Further, since the lower surface 127a of the base portion 127 of the plug housing 120 is formed flat, even when the counterpart member 6 is bent due to an impact when the connectors 10 and 110 are fitted together, the flat lower surface 127a is formed. Since this impact can be received by the entire bottom surface of the plug-type connector 110 in contact with the counterpart member 6, the strength of the plug-type connector 110 against the impact applied by the fitting operation of both connectors is improved. This is particularly effective when both connectors are frequently engaged and disengaged, such as a drawer connector.

  Although the preferred embodiments of the present invention have been described so far, the scope of the present invention is not limited to those shown in the above-described embodiments. For example, the number of contacts provided in the mating connector according to the present invention is 24, but this is only an example, and the number of contacts may be any number. In the above-described embodiment, the receptacle type connector is a board connection type that is connected to the board, and the plug type connector is a wire connection type that is connected to the electric wire. However, the receptacle type connector and the plug type connector are each a board connection type. And wire connection type.

  In the above-described embodiment, the erroneous insertion preventing convex portion and the concave groove that are fitted only when the receptacle housing and the plug housing are coupled in the correct orientation are formed on the side wall of the receptacle housing from the central position. Engagement protrusions formed at positions shifted to the front wall or rear wall side, and engagement grooves formed at positions shifted from the center position to the front side or the rear side in the plug part (plug base part) of the plug housing However, the present invention is not limited to this configuration. For example, a convex portion and a concave groove for preventing erroneous insertion are formed on either the left or right side of the receptacle housing and the plug housing, or different shapes on the left and right sides ( You may comprise by forming in size.

FIG. 2 shows a fitting connector according to an embodiment of the present invention, and is a cross-sectional view of each connector viewed from the side showing a state immediately before the receptacle-type connector and the plug-type connector are coupled. The receptacle type connector which comprises the said fitting type connector is shown, (a) is a top view of a receptacle type connector, (b) is a rear view, (c) is a bottom view. FIGS. 3A and 3B are cross-sectional views of the receptacle housing constituting the receptacle-type connector as viewed in the direction of arrows III-III in FIG. 2A, in which FIG. 2A shows a state in which no receptacle-side contact is held, and FIG. The state where is held is shown. (A) is sectional drawing (a part is abbreviate | omitted) of the said receptacle housing seen from arrow IV-IV in Fig.2 (a), (b) is a principal part enlarged view in (a). The receptacle side contact which comprises the said receptacle type connector is shown, (a) is a side view of a receptacle side contact, (b) is a front view. The plug type connector which comprises the said fitting type connector is shown, (a) is a top view of a plug type connector, (b) is a rear view, (c) is a bottom view. (A) is a side view of the plug-type connector, and (b) is a cross-sectional view of the plug-type connector as viewed from an arrow VII-VII in FIG. 6 (a). The plug part which comprises the said plug housing is shown in part, (a) is the principal part enlarged view in Fig.6 (a), (b) is the principal part enlarged view in FIG.6 (b). The plug side contact which comprises the said plug-type connector is shown, (a) is a front view of a plug side contact, (b) is a side view. 9A is an arrow view of the plug-side contact seen from the arrow A in FIG. 9A, and FIG. 9B is a cross-sectional view of the plug-side contact seen from the arrow XX in FIG. It is. The said plug type connector attached to the other party member is shown, (a) is a rear view of a plug type connector, (b) is a side view. It is sectional drawing (partially abbreviate | omitted) of each connector seen from the front-back direction which shows the state which started to couple | bond the said receptacle type connector and the said plug type connector. It is sectional drawing of each connector seen from the side which shows the state which the said receptacle type connector and the said plug type connector couple | bonded. It is sectional drawing of each connector seen from the side which shows the case where both connectors are couple | bonded in the state in which the said plug type connector turned the rotation angle with respect to the said receptacle type connector.

Explanation of symbols

S1 Receiving space (fitting space)
DESCRIPTION OF SYMBOLS 1 Mating type connector 10 Receptacle type connector 20 Receptacle housing 26 Side wall 27 Engaging convex part (Convex part for incorrect insertion prevention)
28 Bottom wall 30 Receptacle side contact 110 Plug-type connector 120 Plug housing 121 Plug portion 124 Engaging groove (concave groove for preventing erroneous insertion)
127 Base part 130 Plug side contact

Claims (3)

A plug-type connector configured to include a plug-side contact in a plug housing having a protruding plug portion;
A receptacle-type connector comprising a receptacle-side contact in a receptacle housing having a fitting space that opens to one side and fits with the plug portion;
When the plug portion is fitted in the fitting space and the plug housing and the receptacle housing are coupled, the plug-side contact and the receptacle-side contact come into contact with each other so that the plug-type connector and the receptacle-type In a mating connector configured to be electrically connected to a connector,
The plug-side contact and the receptacle-side contact are disposed in the plug housing and the receptacle housing so as to extend in the fitting / removing direction of the plug portion and the fitting space,
Protruding portions and concave grooves for preventing incorrect insertion that are fitted only when the plug housing and the receptacle housing are to be coupled in the correct orientation, the fitting portion in the plug portion of the plug housing and the receptacle housing. It is arranged to extend in the fitting / removing direction on the fitting space side of the side wall forming the joint space,
When connecting the plug housing and the receptacle housing, so that the contact between the plug-side contact and the receptacle-side contact starts after the fitting of the convex portion for preventing erroneous insertion and the concave groove starts. The fitting type connector, wherein the plug-side contact and the receptacle-side contact, and the insertion and removal direction lengths of the erroneous insertion preventing convex portion and concave groove are set. The distal end of the plug portion in the plug housing is formed in a tapered shape that narrows from the proximal end side toward the distal end side, and the tapered end portion is formed in a rounded end shape with rounded corners. ,
The front end portion of the side wall of the receptacle housing is formed in a tapered shape that is inclined downward toward the fitting space, and the tapered end portion is formed in a rounded end shape with rounded corners. The fitting connector according to claim 1, wherein:   3. The fitting type according to claim 1, wherein a bottom surface of the plug housing, which is a surface facing the counterpart member when the plug connector is fixed to the counterpart member, is formed flat. connector.

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