JP2011134680A - Half fitting detection mechanism of connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a half fitting detection mechanism of a connector, capable of certainly detecting a half fitting state of a connector without using an expensive metal spring. <P>SOLUTION: A half fitting detection mechanism 1 of a connector is provided with a case 2 provided with a connector receiving portion 22, a cover 3 rotatably attached to the case 2, and a rotation guide means 9. The cover 3 is provided with a holding part 31 and a lock arm 32, wherein the holding part butts against a connector 10 half fitting to the connector receiving portion 22 while sandwiching the connector 10 normally fitting to the connector receiving portion 22 between the connector receiving portion 22 and the holding part, and the lock arm is locked to a lock projection 4 that projects from an outer surface of a housing 22a of the connector receiving portion 22. The lock projection 4 is provided with an upper surface 43 located on the top of the lock projection 4 and a tapered surface 42. The rotation guide means 9 rotates the cover 3 such that, when the holding part 31 butts against the connector 10, the lock arm 32 is brought into contact with the tapered surface 42. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a half-fitting detection mechanism for a connector that detects a half-fitted state of a connector and prevents half-fitting of the connector.

  In order to detect the half-fitted state of the connector, for example, a connector half-fitting detection mechanism shown in FIGS. 12 and 13 is known (see FIG. 4 of Patent Document 1). As shown in FIGS. 12 and 13, the half-fitting detection mechanism 201 of the connector is provided with a case 202 provided with a connector receiving portion 222 to which the connector 210 is fitted, and a case 202 via a rotating shaft. A cover 203 that is movably attached, and a metal leaf spring 209 that biases the cover 203 away from the connector receiving portion 222, that is, the initial position side shown in FIG. 12, are provided.

  The connector receiving portion 222 has a housing 222a standing in a cylindrical shape from the surface of the case 202 and housing the connector 210, and a pair of lock protrusions 204 protruding from the outer surface of the housing 222a (only one is shown). And a terminal disposed inside the housing 222a. The terminals are electrically connected to the terminals of the connector 210. Reference numeral 211 denotes an electric wire connected to a terminal of the connector 210. Further, the lock protrusion 204 is provided with a flat upper surface 204a positioned at the top of the lock protrusion 204 and a tapered surface 204b adjacent to the upper surface 204a and inclined with respect to the upper surface 204a.

  The cover 203 is provided with a holding portion 231 and a pair of lock arms 232 (only one is shown). When the connector 210 is normally fitted to the connector receiving portion 222, the holding portion 231 holds the connector 210 between the connector receiving portion 222 (see FIG. 13), and the connector 210 is attached to the connector receiving portion 222. When it is half-fitted, it abuts against the connector 210 while turning toward the connector 210. The lock arm 232 is formed in a cantilever shape that can be elastically deformed in the protruding direction of the lock projection 204, and a hole 233 into which the lock projection 204 is fitted is provided on the free end side thereof. As shown in FIG. 13, the lock arm 232 is engaged with the lock protrusion 204 when the holding portion 231 pinches the connector 210 with the connector receiving portion 222.

  The connector half-fitting detection mechanism 201 described above is shown in FIG. 13 from the initial position shown in FIG. 12 with the cover 203 resisting the urging force of the leaf spring 209 after the connector 210 is fitted into the connector receiving portion 222. By being pivoted to the end position in the direction of the arrow, the holding portion 231 holds the connector 210 between the connector receiving portion 222 and the lock arm 232 is engaged with the lock protrusion 204. Further, when the lock arm 232 is engaged with the lock protrusion 204, the lock arm 232 bends from the outer surface side of the housing 222a to the upper surface 204a side as it slides on the surface of the tapered surface 204b, and then gets over the upper surface 204a. Thus, the lock protrusion 204 is engaged with the hole 233 to be engaged with the lock protrusion 204.

  Further, in the connector half-fitting detection mechanism 201, when the connector 210 is half-fitted to the connector receiving portion 222, the cover 203 is rotated from the initial position shown in FIG. 12 to the end position shown in FIG. As the clamping part 231 hits the connector 210 in the middle, the clamping part 231 is restricted from being rotated to an end position where the clamping part 231 is sandwiched between the connector receiving part 222 and the connector 210. Then, the cover 203 whose rotation has stopped midway is returned to the initial position shown in FIG. 12 by the urging force of the leaf spring 209. Thus, the half-fitting detection mechanism 201 of the connector determines that the connector 210 is properly fitted to the connector receiving portion 222 because the cover 203 is positioned at the end position shown in FIG. Is positioned at the initial position shown in FIG. 12, it is detected that the connector 210 is half-fitted to the connector receiving portion 222.

JP 2002-75535 A

  However, the conventional connector half-fitting detection mechanism 201 has a metal leaf spring 209 in the configuration, which increases the cost of parts and assembly, resulting in high costs. .

  Further, in Patent Document 1, a rotation restricting portion is provided on the rotation locus of the cover 203 instead of the leaf spring 209 so that the cover 203 can be moved from the initial position shown in FIG. 12 when the cover 203 is not used. A connector half-fitting detection mechanism that restricts rotation to the end position shown in FIG. 13 is shown (see FIGS. 1 to 3 of Patent Document 1). However, the connector half-fitting detection mechanism without this type of plate spring 209 has the following problems. That is, when the connector 210 is half-fitted to the connector receiving portion 222, the lock arm 232 is engaged even though the holding portion 231 hits the connector 210 and the cover 203 is stopped before the end position shown in FIG. Since it is in a state where it rides on the upper surface 204a of the lock projection 204, it is mistaken that the lock arm 232 is locked to the lock projection 204, that is, the cover 203 is positioned at the end position shown in FIG. There is a problem that the connector 210 may be overlooked and may be overlooked.

  Accordingly, an object of the present invention is to provide a connector half-fitting detection mechanism that can reliably detect a half-fitted state of a connector without using an expensive metal spring.

  In order to achieve the above object, the invention described in claim 1 is provided with a case provided with a connector receiving portion into which a connector is fitted, and a cover rotatably attached to the case. When the connector is normally fitted to the connector receiving portion, the cover is sandwiched between the connector receiving portion and the connector is semi-fitted to the connector receiving portion. A sandwiching portion that abuts against the connector during rotation toward the connector, and the sandwiching portion projects from the outer surface of the housing of the connector receiving portion when the connector is sandwiched between the connector receiving portion and the connector receiving portion. In the half-fitting detection mechanism of the connector provided with a lock arm that is engaged with the lock protrusion, the lock arm cantilevered elastically in the protruding direction of the lock protrusion A hole is formed on the free end of the lock protrusion, and the lock protrusion has a flat upper surface located at the top of the lock protrusion, and the cover rotates toward the connector. A taper surface inclined with respect to the upper surface so as to bend from the outer surface side of the housing to the upper surface side as the lock arm slides on the surface thereof, and the clamping portion is The connector half-fitting detection mechanism is provided with a rotation guide means for rotating the cover so that the lock arm is positioned on the tapered surface when it abuts against the connector. is there.

  The invention described in claim 2 is the invention described in claim 1, wherein the rotation guide means is provided on one of the cover and the case and on the other, and on the other, When the cover is rotated toward the connector, an elongated hole in which the rotation shaft is rotatably mounted with play such that the cover can move along the alignment direction of the tapered surface and the upper surface. And the cover is lifted in the direction from the upper surface side toward the tapered surface side, and the lock arm is The cover is positioned on the tapered surface, and the cover moves over the guide convex portion, so that the cover moves in a direction from the tapered surface side toward the upper surface side. Is characterized in the that the locking projection fits in the surface and the hole by sliding the surface of the upper surface of the lock arm is the tapered surface while.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, when the cover is rotated toward the connector, the lock arm has the taper on the lock protrusion. The upper surface and the taper surface are inclined so as to bend from the outer surface side of the housing to the upper surface side as the lock arm slides on the surface. A second taper surface adjacent to the surface is provided.

  According to the first aspect of the present invention, the lock arm is formed in a cantilever shape that can be elastically deformed in the protruding direction of the lock protrusion, and a hole into which the lock protrusion is fitted is provided on the free end side. The lock protrusion includes a flat upper surface located at the top of the lock protrusion and an outer surface of the housing as the lock arm slides on the surface of the cover when the cover rotates toward the connector. A taper surface that is inclined with respect to the upper surface so as to bend from the front surface side to the upper surface side, and the lock arm is positioned on the taper surface when the clamping portion abuts against the connector. Since the rotation guide means for rotating the cover is provided as described above, when the connector is half-fitted to the connector receiving portion, the clamping portion abuts against the connector. In this case, the lock arm that is bent to the upper surface side is surely positioned on the tapered surface, and for this reason, the lock arm is separated from the upper surface by the elastic restoring force of the lock arm and the guide by the tapered surface. Since the cover surely returns to the position away from the connector, the half-fitted state of the connector can be reliably detected. Therefore, it is possible to provide a connector half-fitting detection mechanism that can reliably detect the half-fitted state of the connector without using an expensive metal spring. Further, since the spring is not used, it is possible to provide a connector half-fitting detection mechanism that can be reduced in weight.

  According to the second aspect of the present invention, the rotation guide means is provided on one of the cover and the case and provided on the other, and the taper surface and the upper surface are arranged. An elongated hole in which the rotation shaft is rotatably attached with play such that the cover can move along a direction, and a guide protrusion that the cover gets over when the cover rotates toward the connector. And when the cover rides on the guide convex portion, the cover is lifted in the direction from the upper surface side toward the tapered surface side, and the lock arm is positioned on the tapered surface, When the cover gets over the guide convex portion, the cover moves in a direction from the tapered surface side to the upper surface side, and the lock arm is moved. Slides on the surface of the taper surface and the surface of the upper surface, and the lock projection fits into the hole, so that when the connector is half-fitted to the connector receiving portion, the lock arm is ridden on the upper surface. Therefore, it can be reliably positioned on the tapered surface, and the cover can be reliably returned to the position away from the connector. Therefore, it is possible to provide a connector half-fitting detection mechanism that can reliably detect the half-fitted state of the connector without using an expensive metal spring.

  According to the invention described in claim 3, when the cover is rotated toward the connector, the lock arm comes into contact with the lock protrusion before the taper surface, and the lock arm is A second taper surface that is inclined with respect to the upper surface and the taper surface so as to bend from the outer surface side of the housing to the upper surface side as the surface slides and is adjacent to the upper surface and the taper surface is provided. Therefore, when the connector is half-fitted to the connector receiving portion, the lock arm is moved away from the upper surface by the elastic restoring force of the lock arm, the guide by the taper surface, and the guide by the second taper surface. By sliding, the cover can be reliably returned to the position away from the connector. Therefore, it is possible to provide a connector half-fitting detection mechanism that can reliably detect the half-fitted state of the connector without using an expensive metal spring.

It is a top view which shows the half-fitting detection mechanism of the connector which concerns on one embodiment of this invention. It is the top view which looked at the B section in FIG. 1 from the arrow A direction. It is a top view which shows a mode that the cover shown by FIG. 1 is rotating toward a connector. FIG. 4 is a plan view showing a state in which the cover shown in FIG. 3 has hit a connector in a half-fitted state. FIG. 5 is a plan view of the half-fitting detection mechanism of the connector shown in FIG. It is an enlarged view of the F section in FIG. It is sectional drawing along the EE line in FIG. FIG. 4 is a plan view showing a state in which the holding portion of the cover shown in FIG. 3 holds the connector between the connector receiving portion and the lock arm of the cover is locked to the lock protrusion. It is the top view which looked at the half-fitting detection mechanism of the connector shown by FIG. It is sectional drawing along the II line | wire in FIG. It is sectional drawing along the JJ line in FIG. It is a top view which shows the half-fitting detection mechanism of the conventional connector. FIG. 13 is a plan view showing a state in which the holding portion of the cover shown in FIG. 12 holds the connector between the connector receiving portion and the lock arm of the cover is locked to the lock protrusion.

  A connector half-fitting detection mechanism according to an embodiment of the present invention will be described with reference to FIGS.

  The connector half-fitting detection mechanism 1 includes a case 2, a cover 3 rotatably attached to the case 2 from an initial position shown in FIG. 1 to an end position shown in FIG. 8, and a cover 3 as described later. Rotating guide means 9 for rotating is provided.

  The case 2 is a case of an electrical connection box mounted on an automobile, and is formed of a synthetic resin. The case 2 includes a connector receiving portion 22 to which the connector 10 is fitted, a second connector receiving portion 23 to which a second connector (not shown) is fitted, a cover attaching portion 25 to which the cover 3 is attached, Is provided. The connector 10 is a connector constituting a circuit for operating an automobile airbag. Reference numeral 11 denotes an electric wire connected to a terminal of the connector 10.

  As shown in FIGS. 1, 5, 7, and 11, the connector receiving portion 22 is a cylindrical housing that is erected from the flat ceiling wall 21 of the case 2 in the direction of arrow Y and accommodates the connector 10. 22a, an inner side of the housing 22a, a latch receiving portion 24 that is latched to a latch arm 10a provided on the housing of the connector 10, and an outer surface of the housing 22a that protrudes away from each other in the arrow Z direction. A pair of the locking projections 4 and terminals that are disposed inside the housing 22a and are electrically connected to the terminals of the connector 10 are provided. The connector 10 is fitted to the connector receiving portion 22 by being inserted along the arrow Y direction inside the cylindrical housing 22a. The arrow Z direction is a direction orthogonal to the arrow Y direction.

  In the present invention, as shown in FIGS. 8 to 11, the connector 10 is inserted deep inside the housing 22 a, the locking arm 10 a is locked to the locking receiving portion 24, and the terminal of the connector 10 is That the terminal of the connector receiving portion 22 is electrically connected is expressed as “the connector 10 is properly fitted to the connector receiving portion 22”. Further, the connector 10 is inserted shallow inside the housing 22a, the locking arm 10a is not locked to the locking receiving portion 24, and the terminal of the connector 10 and the terminal of the connector receiving portion 22 are not electrically connected. This is expressed as “connector 10 is semi-fitted to connector receiving portion 22”.

  The second connector receiving portion 23 is erected from the ceiling wall 21 of the case 2 in the direction of arrow Y, and is disposed inside the housing, and a cylindrical housing that houses the second connector. And a terminal electrically connected to the terminal of the connector. The second connector is fitted into the second connector receiving portion 23 by being inserted along the arrow Y direction inside the cylindrical housing.

  The cover attaching portion 25 is erected in the arrow Y direction from the ceiling wall 21 of the case 2. The cover attaching portion 25 is provided with a pair of long holes 6 for attaching the rotating shaft 5 provided on the cover 3 (only one is shown in FIG. 1). The pair of long holes 6 are provided at positions facing each other in the arrow Z direction. That is, the cover 3 is rotatably attached to the cover attaching portion 25 in a direction in which the axial direction of the rotary shaft 5 is parallel to the arrow Z direction.

  The second connector receiving portion 23, the cover attaching portion 25, and the connector receiving portion 22 described above are arranged in order along the arrow X direction as shown in FIGS. The arrow X direction is a direction orthogonal to the arrow Y direction and the arrow Z direction. Further, the length of the cover mounting portion 25 in the arrow Y direction is larger than the length of the second connector receiving portion 23 in the arrow Y direction, and the length of the connector receiving portion 22 in the arrow Y direction is the length of the cover mounting portion 25. It is larger than the length in the arrow Y direction.

  The cover 3 is made of synthetic resin. As shown in FIGS. 1, 5, 10, and the like, the cover 3 has a base portion 30 provided with a columnar rotating shaft 5 attached to the pair of long holes 6, and a plate-like shape connected to the base portion 30. A sandwiching portion 31 formed, a pair of lock arms 32 formed in a plate shape connected to the base portion 30, and a pair of second lock portions 34 (only one is shown) connected to the base portion 30 are provided. Yes.

  When the connector 10 is normally fitted to the connector receiving portion 22, the holding portion 31 holds the connector 10 between the connector receiving portion 22 and the connector 10 as shown in FIGS. This prevents the connector receiving portion 22 from falling off. Further, when the connector 10 is half-fitted to the connector receiving portion 22, the clamping portion 31 hits the connector 10 while being rotated toward the connector 10 as shown in FIG. Detects the half-fitted state.

  As shown in FIGS. 7 and 10, the pair of lock arms 32 are disposed along the axial direction of the rotation shaft 5, that is, along the arrow Z direction, at positions facing each other with a space therebetween. It arrange | positions in the position which can position the housing 22a of the connector receiving part 22 between. As shown in FIG. 7, each lock arm 32 is formed in a cantilever shape that can be elastically deformed in the direction of arrow Z, which is a protruding direction of the lock protrusion 4 from the outer surface of the housing 22 a, and its free end side (base portion 30). A hole 33 into which the lock protrusion 4 is fitted. As shown in FIGS. 8 and 10, these lock arms 32 are engaged with the lock protrusions 4 when the sandwiching portion 31 sandwiches the connector 10 with the connector receiving portion 22. That is, when the pair of lock arms 32 are engaged with the pair of lock projections 4, as shown in FIG. 7, the pair of lock arms 32 are temporarily elastically deformed in a direction away from each other in the direction of the arrow Z as shown in FIG. As shown in FIG. 10, when the pair of lock protrusions 4 is overcome, the shape before elastic deformation is restored and the pair of lock protrusions 4 are engaged.

  The pair of second lock portions 34 are arranged at positions facing each other with an interval along the axial direction of the rotary shaft 5, that is, along the arrow Z direction. It is arranged at a position closer to the rotating shaft 5 than 32. The pair of second lock portions 34 are formed to protrude toward the rotation shaft 5. These second lock portions 34 slide on the surface of the guide projection 7 when the cover 3 gets over the guide projection 7 described later.

  The cover 3 having the above-described configuration is positioned at the initial position shown in FIG. 1 until the connector 10 is inserted into the housing 22a of the connector receiving portion 22. Then, after the connector 10 is inserted into the housing 22a of the connector receiving portion 22, it is rotated from the initial position shown in FIG. 1 to the end position shown in FIG. Further, the cover 3 is rotated to the end position when the connector 10 is normally fitted to the connector receiving portion 22, and the holding portion 31 when the connector 10 is half-fitted to the connector receiving portion 22. Struck against the connector 10 is restricted from being rotated to the end position.

  Further, in the present invention, as shown in FIG. 1, it is assumed that the cover 3 is positioned on the second connector receiving portion 23 and positioned farthest from the connector receiving portion 22 and the connector 10. 3 is positioned at the initial position ”. Further, in the present invention, as shown in FIG. 8, the cover 3 is positioned at a position where the holding portion 31 holds the connector 10 between the connector receiving portion 22 and the lock arm 32 is engaged with the lock protrusion 4. This is expressed as “the cover 3 is positioned at the end position”.

  In the half-fitting detection mechanism 1 of the connector of the present invention, except for the state where the cover 3 is positioned at the end position, a part or all of the cover 3 is as shown in FIGS. It is positioned on the second connector receiving portion 23 and has a structure in which the second connector cannot be inserted into the second connector receiving portion 23. Thus, in the connector half-fitting detection mechanism 1, the second connector cannot be inserted into the second connector receiving portion 23 until the connector 10 is properly fitted to the connector receiving portion 22. Thus, the half-fitting of the connector 10 is surely prevented. That is, in the connector half-fitting detection mechanism 1, it is determined that the connector 10 is properly fitted to the connector receiving portion 22 because the second connector can be inserted into the second connector receiving portion 23. Then, it is detected that the connector 10 is half-fitted to the connector receiving portion 22 because the second connector could not be inserted into the second connector receiving portion 23.

  As shown in FIGS. 1, 2, and 6, the lock protrusion 4 is located on the top of the lock protrusion 4, and is parallel to the arrow X direction and the arrow Y direction. A tapered surface 42 that is adjacent and inclined with respect to the upper surface 43, and a second tapered surface 41 that is adjacent to both the upper surface 43 and the tapered surface 42 and is inclined with respect to the upper surface 43 and the tapered surface 42 are provided. ing. Further, the “top portion of the lock protrusion 4” means a portion of the lock protrusion 4 that protrudes most in the direction of the arrow Z from the outer surface of the housing 22a.

  Further, the upper surface 43 and the tapered surface 42 are arranged along the arrow Y direction, and the tapered surface 42 is arranged at a position farther from the ceiling wall 21 than the upper surface 43. That is, the taper surface 42 is inclined in the direction away from the outer surface of the housing 22a along the arrow Z direction as it approaches the upper surface 43 along the arrow Y direction.

  The upper surface 43 and the second tapered surface 41 are arranged along the arrow X direction, and the second tapered surface 41 is disposed closer to the second connector receiving portion 23 than the upper surface 43. Has been. That is, the second taper surface 41 is inclined in the direction away from the outer surface of the housing 22a along the arrow Z direction as it approaches the upper surface 43 along the arrow X direction.

  When the lock arm 32 is engaged with the lock protrusion 4, a portion located on the free end side of the lock arm 32 and located on the second lock portion 34 side slides on the surface of the second tapered surface 41. Then, the surface of the taper surface 42 is slid to reach the upper surface 43, and the surface of the upper surface 43 is slid to overcome the upper surface 43, and the lock projection 4 is fitted into the hole 33, thereby forming the lock projection 4. Lock. That is, the second taper surface 41 and the taper surface 42 are inclined with respect to the upper surface 43 so as to bend from the outer surface side of the housing 22a to the upper surface 43 side as the lock arm 32 slides on the surface thereof.

  The rotation guide means 9 is a structure for rotating the cover 3 so that the lock arm 32 is reliably positioned on the tapered surface 42 when the clamping portion 31 abuts against the connector 10. That is, when the connector 10 is half-fitted to the connector receiving portion 22, the rotation guide means 9 returns the cover 3 to the initial position side from the position where the clamping portion 31 hits the connector 10, and This is a structure for reliably detecting the half-fitted state.

  The rotation guide means 9 is a position where the rotary shaft 5 provided in the cover 3, the pair of long holes 6 provided in the cover attachment portion 25, and the upper end portion of the cover attachment portion 25 are opposed to each other in the arrow Z direction. And a pair of guide projections 7 that protrude in a mountain shape in the direction of arrow Y and over which the pair of second lock portions 34 rides when the cover 3 rotates from the initial position to the end position.

  The pair of long holes 6 are holes extending in the arrow Y direction, which is the direction in which the tapered surface 42 and the upper surface 43 are arranged. By attaching the rotating shaft 5 through the pair of long holes 6 as described above, the cover 3 is attached to the cover 3 with play that is movable in the direction of the arrow Y, which is the direction in which the tapered surface 42 and the upper surface 43 are aligned. The unit 25 is rotatably attached.

  Such a rotation guide means 9 rotates the cover 3 as follows. That is, when the cover 3 is rotated from the initial position toward the end position as shown in FIG. 3, the pair of second lock portions 34 ride on the pair of guide convex portions 7, so that the cover 3 is moved in the arrow Y direction. The pair of lock arms 32 slide on the second taper surfaces 41 and are positioned on the taper surfaces 42 while being lifted in the direction from the upper surface 43 side toward the taper surface 42 side. Further, when the connector 10 is half-fitted to the connector receiving portion 22, the clamping portion 31 hits the connector 10 at this timing. That is, the rotation guide means 9 positions the pair of lock arms 32 on the respective taper surfaces 42 in accordance with the timing (shown in FIGS. 4 to 7) at which the sandwiching portion 31 comes into contact with the connector 10. 6 indicates a contact point with the tapered surface 42 of the lock arm 32.

  Then, the cover 3 whose rotation has stopped midway due to the holding portion 31 hitting the connector 10 returns to the initial position side as follows. That is, since the lock arm 32 bent to the upper surface 43 side is positioned on the taper surface 42, the lock arm 32 is formed on the taper surface 42 by its own elastic restoring force and guidance by the taper surface 42. By sliding the surface away from the upper surface 43, that is, in the direction of arrow G in FIG. 6, the cover 3 returns to the initial position side, that is, in the direction of arrow D in FIG. Further, the cover 3 that has returned to the direction of the arrow D when the lock arm 32 slides on the surface of the taper surface 42 is further moved by the arrow D when the lock arm 32 slides on the surface of the second taper surface 41. Go back in the direction. Thus, the cover 3 returns to the initial position side away from the connector 10.

  When the connector 10 is properly fitted to the connector receiving portion 22, the pair of second lock portions 34 rides on the pair of guide convex portions 7 and then climbs over the pair of guide convex portions 7, thereby covering the cover 10. 3 falls in the direction from the taper surface 42 side to the upper surface 43 side along the arrow Y direction, and a pair of lock arms 32 slides on the surface of each taper surface 42 and the surface of each upper surface 43 to enter each hole 33. Each lock projection 4 is fitted, and the pair of lock arms 32 are respectively engaged with the pair of lock projections 4. Moreover, the clamping part 31 clamps the connector 10 between the connector receiving parts 22 (refer FIG. 8).

  Further, as described above, the pair of second lock portions 34 that have passed over the pair of guide convex portions 7 are positioned at positions aligned with the pair of guide convex portions 7 in the direction of the arrow X, and are disposed on the side surfaces of the pair of guide convex portions 7. Abut. This reliably prevents rattling of the cover 3 and the movement of the cover 3 from the end position to the initial position side.

  According to such a half-fitting detection mechanism 1 of the connector, when the connector 10 is half-fitted to the connector receiving portion 22 by the action of the rotation guide means 9, the cover 3 and the clamping portion 31 are the connector. 10 can be reliably returned to the initial position side from the position at which it hits 10, so that the half-fitted state of the connector 10 can be reliably detected. Thus, the present invention provides a connector half-fitting detection mechanism 1 that can reliably detect the half-fitted state of the connector 10 only with a resin member without using an expensive metal spring. Can do. Moreover, in this invention, the half-fitting detection mechanism 1 of the connector which can be reduced in weight can be provided by not using the said spring.

  Further, according to the half-fitting detection mechanism 1 of the connector, since the locus of the cover 3 is lifted in a mountain and dropped in a mountain by the action of the rotation guide means 9, the connector 10 receives the connector. When half-fitted to the portion 22, the lock arm 32 can be reliably positioned on the tapered surface 42 without getting on the upper surface 43, and the cover 3 can be reliably returned to the initial position side. .

  Further, according to the connector half-fitting detection mechanism 1, since the lock protrusion 4 is provided with the two tapered surfaces 42 and 41, the connector 10 is half-fitted to the connector receiving portion 22. The lock arm 32 is slid to the side away from the upper surface 43 by the elastic restoring force of the lock arm 32, the guide by the taper surface 42, and the guide by the second taper surface 41, and the cover 3 is securely removed from the connector 10. It can be returned to a distant position. That is, the cover 3 can be returned further than when only one tapered surface is provided.

  In the embodiment described above, the rotating shaft 5 is provided on the cover 3 side and the long hole 6 is provided on the case 2 side. However, in the present invention, the rotating shaft 5 is provided on the case 2 side and the long hole is provided. 6 may be provided on the cover 3 side.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Connector half-fitting detection mechanism 2 Case 3 Cover 4 Lock protrusion 5 Rotating shaft 6 Long hole 7 Guide convex part 9 Rotation guide means 10 Connector 22 Connector receiving part 22a Housing 31 Holding part 32 Lock arm 33 Hole 41 2nd Tapered surface 42 Tapered surface 43 Upper surface

Claims (3)

A case provided with a connector receiving portion into which a connector is fitted, and a cover rotatably attached to the case;
When the connector is normally fitted to the connector receiving portion, the cover is sandwiched between the connector receiving portion and the connector is semi-fitted to the connector receiving portion. A sandwiching portion that abuts against the connector during rotation toward the connector, and the sandwiching portion projects from the outer surface of the housing of the connector receiving portion when the connector is sandwiched between the connector receiving portion and the connector receiving portion. In the half-fitting detection mechanism of the connector provided with a lock arm that engages with the lock protrusion,
The lock arm is formed in a cantilever shape that can be elastically deformed in the protruding direction of the lock protrusion, and a hole in which the lock protrusion is fitted is provided on a free end side thereof,
The lock protrusion includes a flat upper surface located at the top of the lock protrusion and an outer surface of the housing as the lock arm slides on the surface of the cover when the cover rotates toward the connector. A tapered surface inclined with respect to the upper surface so as to bend from the side to the upper surface side, and
A half-fit of the connector, characterized in that it is provided with a rotation guide means for rotating the cover so that the lock arm is positioned on the tapered surface when the holding portion abuts against the connector. Joint detection mechanism. The rotation guide means is provided on one of the cover and the case, and on the other, so that the cover can move along the direction in which the tapered surface and the upper surface are aligned. An elongated hole rotatably attached to the rotary shaft, and a guide convex portion that the cover gets over when the cover rotates toward the connector, and
When the cover rides on the guide convex portion, the cover is lifted in the direction from the upper surface side toward the tapered surface side, the lock arm is positioned on the tapered surface, and the cover is positioned on the guide convex portion. By moving over the portion, the cover moves in the direction from the tapered surface side toward the upper surface side, and the lock arm slides on the surface of the tapered surface and the surface of the upper surface, so that the lock protrusion is in the hole. The connector half-fitting detection mechanism according to claim 1, wherein the connector is fitted. When the cover rotates toward the connector, the lock arm comes into contact with the lock projection before the taper surface, and the lock arm slides on the surface of the lock projection. The second taper surface which is inclined with respect to the upper surface and the taper surface so as to bend from the surface side to the upper surface side and which is adjacent to the upper surface and the taper surface is provided. Item 3. The half-fitting detection mechanism for a connector according to Item 2.

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