JP2006179309A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector without giving an uneasy feeling to a user. <P>SOLUTION: In a plug blade 31 of a male connector 1, a distance from the opening surface of a plug blade insertion hole 41 of a position first contacting the plug blade 31 inserted into the plug blade insertion hole 41 in a blade rest 7 is set larger than a projecting dimension with respect to an insertion part 51 of a position first contacting the blade rest 7 in insertion into the plug blade insertion hole 41 of a female connector 2. Since the plug blade 31 does not contact with the blade rest 7 until it is concealed inside the plug blade insertion hole 41, an uneasy feeling is never given to a user. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connector having therein a contact that opens and closes when connected.

  Conventionally, a connector for connecting a power cable connected to a load such as a lighting fixture for movie or stage lighting and a power cable connected to a power source has been provided (for example, see Patent Document 1). .

  An example of this type of connector is shown in FIGS. 10A and 10B (see, for example, Patent Document 2). Hereinafter, the horizontal direction is based on FIG. 10B, and the vertical direction in FIG. 10B is referred to as the front-rear direction. Further, the front side in FIG. 10B is referred to as the upper side.

  The connector includes a male connector 1 having three plug blades 31 and 32, and a female connector 2 having a female housing 4 having a plug blade insertion hole 41 into which the plug blades 31 and 32 are respectively inserted. Become.

  More specifically, the male connector 1 includes a male housing 5 that is made of, for example, a synthetic resin molded product, and holds the plug blades 31 and 32 by protruding part of the plug blades 31 and 32 rearward. The plug blades 31 and 32 are made of, for example, a metal plate, and are electrically connected to a load-side electric wire (not shown) via a crimp terminal T. Three plug blades 31 and 32 are provided side by side, and the two plug blades 31 at both ends are a voltage electrode and a grounding side electrode, each of which is long in the front-rear direction and the rear end portion is directed in the vertical direction. It is bent inward in a U shape, and the single plug blade 32 at the center is a grounding electrode, and the thickness direction is directed upward and downward.

  On the other hand, the female connectors 2 are each made of a metal plate and are accommodated in opposite directions at the left and right ends of the female housing 4 and are connected to the power supply side voltage poles and ground side poles via the crimp terminals T (not shown). And two terminal plates 61 electrically connected to each other, and a metal plate that is long in the front and rear direction with the thickness direction directed in the vertical direction. And a ground terminal plate 62 housed in the female housing 4 so that the front end is exposed in the plug blade insertion hole 41. A fixed contact 64 is provided on the opposing surface of each terminal board 61.

  Further, the left and right end portions of the plug blade insertion hole 41 are respectively housed with blade receptacles 7 made of metal plates and in contact with the voltage side electrode plug blade 31 inserted through the plug blade insertion hole 41. Each blade receiver 7 has a holding portion 71 held in the female housing 4, and a front end portion connected to the holding portion 71 and extending rearward, and a rear end protruding size with respect to the left and right inner surfaces of the plug blade insertion hole 41. And a spring portion 79 having a spring property in a direction to change the angle. The movable contact 74 is provided on the surface facing the inner surface of the plug blade insertion hole 41 at the rear end portion of the spring portion 79, and the fixed contact 64 and the movable contact 74 are opposed to the left and right. Further, the spring portion 79 of the blade receiver 7 is inclined so as to increase the projecting dimension from the left and right inner surfaces of the plug blade insertion hole 41 toward the rear.

  When the plug blades 31, 32 of the male connector 1 are inserted into the plug blade insertion holes 41 of the female connector 2, first, the plug blades 31 of the voltage electrode and the ground side electrode are respectively brought into contact with the blade receiver 7. When the plug blades 31 and 32 are further pushed, the inclined surface of the spring portion 79 of the blade receiver 7 is pressed against the plug blade 31 and the spring portion 79 is elastically deformed, whereby the movable contact 74 is brought into contact with the fixed contact 64. The plug electrode 32 of the ground electrode is in contact with the ground terminal plate 62. Here, the load-side electric wire and the power source-side electric wire are electrically connected in a one-to-one relationship.

On the other hand, when the blades 31 and 32 are not inserted into the blade insertion hole 41, the movable contact 74 and the fixed contact 64 are maintained in a separated state by the spring force of the spring portion 79, whereby the blade receiver 7. And the terminal plate 61 are insulated, and the blade receiver 7 is not energized, so safety is ensured.
JP-A-7-272785 Japanese Patent Publication No. 5-9909

  However, in the above-described conventional example, when the male connector 1 and the female connector 2 are connected, the plug blade 31 is in contact with the blade receiver 7 before being housed in the plug blade insertion hole 41. It gave anxiety to the users who were not.

  This invention is made | formed in view of the said reason, The objective is to provide the connector which does not give an anxiety to a user.

  The invention according to claim 1 is a male connector comprising a plug blade made of a conductive material and electrically connected to an electric wire, and a male housing made of an insulating material and projecting at least a part of the plug blade to hold the plug blade. A female housing made of an insulating material and having a plug blade insertion hole into which a male connector blade is inserted, and a female housing made of a conductive material and electrically connected to an electric wire different from the blade And a female connector provided with a blade receiver that is made of an elastic conductive material and has a movable contact that is spaced apart from the fixed contact and that is opposed to the fixed blade, and that is in contact with the plug blade inserted through the plug blade insertion hole. The blade receiver includes a holding portion held in the female housing, and a front end portion connected to the holding portion and extending rearward in the vicinity of the inner side surface of the plug blade insertion hole, with respect to the inner side surface of the plug blade insertion hole. Change the protruding dimension of The movable contact is provided on the inner surface of the plug blade insertion hole at the rear end of the spring portion, and at least a part of the spring portion of the blade receiver is rearward. Inclined so as to increase the protruding dimension from the inner surface of the plug blade insertion hole toward this, and this inclined surface is pressed by the plug blade inserted into the plug blade insertion hole, and the spring part is elastically deformed to move the movable contact In the connector that is in contact with the fixed contact, the insertion in the male housing at the end in the insertion direction of the plug blade is smaller than the plug blade insertion hole and the plug blade protrudes from the tip surface. The plug blade is inserted into the plug blade insertion hole at the blade holder, rather than the protruding dimension relative to the insertion portion at the position where the blade blade first contacts the blade holder when inserted into the plug blade insertion hole. Opening surface of the plug blade insertion hole at the first contact position Characterized in that to increase the distance al.

  According to the present invention, the user does not feel uneasy because the blade does not contact the blade receptacle until the blade is hidden inside the blade insertion hole.

  The invention of claim 2 is characterized in that, in the invention of claim 1, the spring portion of the blade receiver is provided with a parallel portion that contacts with a surface parallel to the plug blade when the male connector is connected to the female connector. To do.

  According to this invention, since the contact area between the plug blade and the blade receiver is increased as compared with the case where no parallel portion is provided, the contact resistance can be reduced.

  The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the vicinity of the connecting portion of the spring portion with the holding portion is bent in an arc shape so that the front surface is convex.

  According to this invention, compared with the case where a spring part is made flat, the spring part can be lengthened and the spring property can be improved while reducing the longitudinal dimension of the blade receiver.

  According to a fourth aspect of the present invention, in the first to third aspects of the present invention, when the spring portion is deformed to such an extent that at least the movable contact contacts the fixed contact, the spring portion is opposite to the surface on which the plug blade contacts. The female housing is provided with a stop portion that contacts the surface and prevents unnecessary deformation of the spring portion.

  According to the present invention, plastic deformation of the spring portion can be prevented.

  The invention of claim 5 is characterized in that, in the invention of claim 4, the female housing is made of a synthetic resin molded product, and a concave portion is provided on a surface of the stopper that contacts the blade receiver.

  According to the present invention, the necessary material can be reduced while ensuring the front and rear dimensions of the stopper.

  According to the present invention, in the plug blade, the plug blade inserted into the plug blade insertion hole in the blade receiver, rather than the projecting dimension with respect to the insertion portion at the position of first contact with the blade receiver when inserted into the plug blade insertion hole. Since the distance from the opening surface of the plug blade insertion hole at the first contact position is increased, the blade blade does not contact the blade blade until it is hidden inside the plug blade insertion hole, so the user feels uneasy. Never give.

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

  As shown in FIG. 1, the connector of this embodiment includes a male connector 1 having three plug blades 31 and 32 and a housing 4 in which plug blade insertion holes 41 into which the respective plug blades 31 and 32 are inserted are opened. The female connector 2 having Hereinafter, the horizontal direction is based on FIG. 1, and the vertical direction in FIG. Further, the front side in FIG. 1 is referred to as the upper side.

  More specifically, the male connector 1 includes a male housing 5 that is made of, for example, a synthetic resin molded product and holds the plug blades 31 and 32 by projecting a part of the plug blades 31 and 32 rearward. Each of the blades 31 and 32 is made of a conductive material such as a metal plate, for example, and is electrically connected to a load-side electric wire (not shown) via a crimp terminal H. The three blades 31 and 32 are provided side by side, and the two blade blades 31 on the left and right sides are long in the front and rear direction, the width direction is directed in the vertical direction, and the rear end is bent inward in a U shape. , One is connected to the voltage electrode, and the other is connected to the ground side electrode. On the other hand, the single blade 32 at the center has a thickness direction directed in the vertical direction, and is connected to the ground electrode. The male housing 5 has an insertion portion 51 that protrudes rearward from the center portion of the rear surface, and each of the plug blades 31 and 32 protrudes rearward from the rear surface of the insertion portion 51. Here, the dimension of the insertion portion 51 viewed from the rear is smaller than the dimension of the opening of the plug blade insertion hole 41.

  Next, the female connector 2 will be described. As shown in FIGS. 2 and 3, the female housing 4 is inserted between the body 4a having a recess 42a on the upper surface and a recess 4a on the lower surface and coupled to the upper side of the body 4a to insert the plug blade between the body 4a. And a cover 4b for forming a hole 41. The body 4a and the cover 4b are each made of a synthetic resin molded product. Screw insertion holes 43a and 43b through which assembly screws SC1 are respectively inserted are vertically inserted in the body 4a and the cover 4b, and assembly screws that respectively penetrate the screw insertion holes 43a and 43b between the body 4a and the cover 4b. When SC1 is screwed onto the nut N, the body 4a and the cover 4b are coupled. The body 4a and the cover 4b are provided with plug blade insertion notches 41a and 41b that form the opening of the plug blade insertion hole 41 when joined to each other at the front end portions. Further, the rear surface of the female housing 4 has an electric wire insertion hole 44 through which the power cable C in which the electric wires C1 and C2 are bundled with the sheath SH is inserted, and the body 4a and the cover 4b are coupled to each other. Sometimes, wire insertion notches 44a and 44b constituting the wire insertion hole 44 are provided.

  The female connector 2 is made of a metal plate and is housed at the left and right ends of the female housing 4 and is electrically connected to the power supply side voltage pole and the ground side pole electric wire C1 via the crimp terminals T. Terminal plate 61 and a metal plate made of a long metal plate in the front and rear direction and housed in the central portion of the female housing 4 in the left-right direction. And a ground terminal plate 62. Each terminal plate 61 and the ground terminal plate 62 are held by the body 4a by fitting, for example. The power cable C is sandwiched between a pair of metal fittings H that are screwed to the body 4a by a fastening screw SC2 behind the terminal plate 61 and the ground terminal plate 62.

  Each terminal plate 61 includes a connection portion 61b having a screw hole 61a into which a terminal screw TS1 inserted into the crimp terminal T of the electric wire C1 of the voltage electrode or the ground side electrode is screwed, and an upper side from the front end portion of the connection portion 61b. And a terminal portion 61d that protrudes forward from the outer end in the left-right direction of the connection portion 61c. In addition, fixed contacts 64 project from the inner surface of the terminal portion 61 d of each terminal plate 61.

  The ground terminal plate 62 includes a connection portion 62b having a screw hole 62a into which a terminal screw TS2 inserted through the crimp terminal T of the electric wire C2 of the ground electrode is screwed, and a connection projecting upward from the front end portion of the connection portion 62b. 62 c and a terminal portion 62 d that protrudes forward from the upper end of the connecting portion 62 c and is exposed in the plug blade insertion hole 41. A central portion in the front-rear direction of the terminal portion 62d is inclined downward toward the front, and the terminal portion 62d has a spring property in the vertical direction. Further, the front end portion of the terminal portion 62d is inclined upward toward the front.

  Further, a partition wall 45 is provided in the recess 42a of the body 4a so as to partition the terminal plate 61 and the ground terminal plate 62 and insulate them from each other.

  Further, the blade insertion hole 41 accommodates two blade receptacles 7 each made of a metal plate and brought into contact with the blade 31 inserted into the blade insertion hole 41. Each blade receiver 7 has a holding portion 71 held in the female housing 4 with the thickness direction directed in the left-right direction, and a tip portion bent from the front end portion of the holding portion 71 into an arcuate shape inside the plug blade insertion hole 41. Is opposed to the holding portion 71 and forms a U-shape with the holding portion 71, and protrudes rearward from the tip of the spring base 72, and the protruding dimension toward the inner side of the plug blade insertion hole 41 is increased rearward. And an inclined portion 73 inclined in the direction. The spring base 72 and the inclined portion 73 as a whole have a spring property in the left-right direction that changes the projecting dimension of the rear end portion of the inclined portion 73 to the inside of the plug blade insertion hole 41. That is, the spring base 72 and the inclined portion 73 constitute a spring portion. By providing the spring base 72 bent in a circular arc shape having a convex front surface as described above, the front and rear dimensions of the blade receiver 7 are maintained while maintaining the dimensions before and after the spring base 72 is not provided as shown in FIG. Since the part 71 and the spring part are extended, it is possible to improve the holding strength and springiness of the blade receiver 7. Furthermore, a through hole 72a for facilitating deformation of the spring base 72 is provided at the center of the spring base 72 in the width direction (vertical direction in FIG. 3). In addition, movable contacts 74 project from the outer surface of the rear end portion of the inclined portion 73 of each blade receiver 7. Here, holding projections 46 project upward from the left and right ends of the body 4a, and the holding portion 71 is held by being sandwiched between the holding projection 46 and the inner surface of the plug blade insertion hole 41. Has been. Here, the fixed contact 64 and the movable contact 74 face each other at a distance.

  The operation of this embodiment will be described below.

  When the blades 31 and 32 are not inserted into the blade insertion hole 41, the blade contact 7 and the terminal plate 61 are insulated from each other because the movable contact 74 and the fixed contact 64 are separated from each other. Does not energize.

  On the other hand, when the plug blades 31, 32 of the male connector 1 are inserted into the plug blade insertion holes 41 of the female connector 2, the plug blades 31 of the voltage side electrode are respectively inclined portions 73 of the blade receiver 7 as shown in FIG. 1. To touch.

  Here, in the inclined portion 73 of the blade receiver 7, the distance from the opening surface of the plug blade insertion hole 41 at the position of first contact with the plug blade 31 inserted into the plug blade insertion hole 41 is It is larger than the projecting dimension with respect to the insertion portion 51 at the position where it first contacts the blade receiver 7 when inserted into the plug blade insertion hole 41. Accordingly, the plug blade 31 does not contact the blade receiver 7 until the plug blade 31 is completely hidden in the plug blade insertion hole 41 as shown in FIG.

  Further, when the insertion part 51 of the male housing 5 is inserted into the plug blade insertion hole 41 against the spring force of the blade receiver 7, the plug blades 31 and 32 are further pushed into the back, and the inclined portion 73 of the blade receiver 7 is plugged. The blade 31 is pressed and elastically deformed. When the movable contact 74 is brought into contact with the fixed contact 64 as shown in FIG. 5, the load-side voltage electrode and the ground-side electrode wire and the power-side voltage electrode and the ground-side wire C <b> 1 are plug blades. 31, the blade receiver 7, and the terminal plate 61 are electrically connected one-on-one. Further, when the plug electrode 32 of the ground electrode is brought into contact with the terminal portion 62d of the ground terminal plate 62, the load-side ground electrode wire and the power-supply side ground electrode wire C2 are electrically connected. Further, when the insertion portion 51 of the male housing 5 is inserted into the plug blade insertion hole 41, the plug blade 32 of the ground electrode presses the lower surface of the front end portion of the terminal portion 62 d of the ground terminal plate 62 to move the terminal portion 62 upward. Elastically deformed. Therefore, the contact force between the plug blade 32 of the ground electrode and the terminal portion 62 d of the ground terminal plate 62 is ensured by the spring force of the terminal portion 62 d of the ground terminal plate 62.

  Here, the inclined portion 73 is bent at two locations so that the central portion in the front-rear direction is bulged into the trapezoidal blade insertion hole 41 in a trapezoidal shape, and further, the rear portion is adjusted to adjust the direction of the movable contact 74 The end is bent. Thereby, when the male connector 1 and the female connector 2 are connected, the center part in the front-back direction of the inclined portion 73 is parallel to the plug blade 31, and this parallel portion contacts the plug blade 31. That is, the central part in the front-rear direction of the inclined part 73 is a parallel part. With this configuration, the contact area between the blade receiver 7 and the plug blade 31 can be increased and the contact resistance can be reduced as compared with the case where there is no parallel portion as shown in FIG.

  Further, in the body 4a, in the state where the male connector 1 and the female connector 2 are connected as shown in FIG. 47 is projected. By the way, when the plug blades 31 and 32 are inserted into the plug blade insertion hole 41 in an oblique direction as shown in FIG. 7 with respect to the correct direction as shown in FIG. 1, the plug blades 31 and 32 are inserted in the correct direction. One of the blade supports 7 (the right side in FIG. 7) is pushed stronger than the time. At this time, if the blade receiver 7 receives a force exceeding the elastic limit, the blade receiver 7 may be plastically deformed. However, in this embodiment, since the stopper 47 abuts against the blade receiver 7 from the opposite side of the plug blade 31, unnecessary deformation of the blade receiver 7 is prevented, so that plastic deformation of the blade receiver 7 is prevented. .

  Further, a recess 47 a is provided on the surface of the stopper 47 that contacts the blade receiver 7. Unlike the case where the front and rear width dimensions of the stop portion 47 are reduced as shown in FIG. 8, this configuration maintains the effect of preventing plastic deformation of the blade receiver 7, but the recess 47a is provided as shown in FIG. The manufacturing cost can be reduced by reducing the amount of synthetic resin required compared to the case where there is not.

  When the force for inserting the male connector 1 into the plug blade insertion hole 41 is released in a state where the movable contact 74 is in contact with the fixed contact 64 and the parallel portion is not in contact with the plug blade 31, the spring of the blade receiver 7 is released. The plug blade 31 is pushed forward by the spring force of the base 72 and the inclined portion 73, and the blade receiver 7 is returned to a position where the movable contact 74 is separated from the fixed contact 64. Therefore, the contact between the movable contact 74 and the fixed contact 64 does not stop in an unstable state.

  Next, when the blades 31 and 32 are removed from the blade insertion hole 41, the blade receiver 7 is restored by the spring force of the spring base 72 and the inclined portion 73, and the movable contact 74 is separated from the fixed contact 64 again.

  According to the above configuration, the plug blade 31 does not come into contact with the blade receiver 7 until the plug blade 31 is completely hidden in the plug blade insertion hole 41, so that the user does not feel uneasy.

  In addition, if only the above effect is obtained, even if the shape of the blade receiver 7 remains the same, a method of shortening the blade receiver 7 and shifting the position of the bent portion of the blade receiver 7 backward, This can also be achieved by extending forward and deepening the plug blade insertion hole 41. However, in the former method, since the blade receiver 7 is shortened, the spring portion 79 is not easily deformed, and there is a problem that the insertion force required for inserting the plug blades 31 and 32 is increased and the usability is lowered. There exists a problem that the female housing 4 will enlarge. On the other hand, in this embodiment, by providing the blade base 7 with a spring base 72 that has a small projecting dimension to the inside of the plug blade insertion hole 41 and does not contact the plug blade 31, the plug blade 31 and the blade receiver 7 are the first. The position in contact with is shifted rearward, and the depth of the plug blade insertion hole 41 is not changed. Therefore, the size of the female housing 4 does not increase, and the length of the spring portion does not need to be changed. As a result, usability is not reduced.

It is the top view which abbreviate | omitted the cover of the female connector which shows embodiment of this invention. It is a figure which shows a female connector same as the above, (a) is a top view, (b) is a side view, (c) is a front view, (d) is a rear view, (e) is a bottom view. It is a disassembled perspective view which shows a female connector same as the above. It is a top view which shows the principal part of a comparative example same as the above. It is the top view which abbreviate | omitted the cover of the female connector which shows the state in which the male connector and the female connector were connected in the same as the above. It is a top view which abbreviate | omitted the cover of the female connector which shows another comparative example same as the above. It is the top view which abbreviate | omitted the cover of the female connector which shows the state by which the plug blade was diagonally inserted in the plug blade insertion hole same as the above. It is a top view which shows the principal part of another comparative example same as the above. It is a top view which shows the principal part of another comparative example same as the above. It is a figure which shows a prior art example, (a) is a top view which sees through the female housing which shows a female connector, (b) is the male housing and female housing which show the state which connected the male connector and the female connector. It is the top view seen through.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Male connector 2 Female connector 4 Female housing 5 Male housing 7 Blade receiver 31 Plug blade 41 Plug blade insertion hole 47 Stop part 47a Recessed part 51 Insertion part 61 Terminal board 64 Fixed contact 71 Holding part 72 Spring base 73 Inclination part 74 Movable contact

Claims (5)

A plug connector made of a conductive material and electrically connected to the electric wire, and a male connector comprising a male housing made of an insulating material and holding the plug blade by projecting at least a part of the plug blade;
A female housing with a plug blade insertion hole made of an insulating material into which the male connector blade is inserted, and a female housing that has a fixed contact that is made of a conductive material and is electrically connected to a wire different from the plug blade. A terminal plate to be housed, and a female connector having a movable contact made of an electrically conductive material having elasticity and opposed to a fixed contact and having a blade receiver that is in contact with and connected to a plug blade inserted from a plug blade insertion hole. Become
The blade receiver has a holding portion held in the female housing, and a front end portion is connected to the holding portion and extends rearward in the vicinity of the inner surface of the plug blade insertion hole, and a protruding dimension of the rear end portion with respect to the inner surface of the plug blade insertion hole And a movable contact is provided on the inner surface of the plug blade insertion hole at the rear end of the spring part,
The spring part of the blade receiver is inclined so that at least a part thereof protrudes rearward from the inner surface of the plug blade insertion hole, and this inclined surface is pressed by the plug blade inserted into the plug blade insertion hole. In the connector where the movable contact is in contact with the fixed contact due to the elastic deformation of the spring part,
At the end of the male housing in the insertion direction of the plug blade, there is provided an insertion portion in which the dimension seen from the insertion and removal direction of the plug blade is smaller than the plug blade insertion hole and the plug blade protrudes from the tip surface.
In the blade, the position where the blade blade first comes into contact with the blade inserted into the blade insertion hole rather than the protruding dimension of the insertion portion at the position where the blade blade first contacts the blade blade when inserted into the blade insertion hole. A connector characterized in that the distance from the opening surface of the plug blade insertion hole is increased.   The connector according to claim 1, wherein a parallel portion that contacts with a surface parallel to the plug blade in a state where the male connector is connected to the female connector is provided in a spring portion of the blade receiver.   The connector according to claim 1 or 2, wherein a portion of the spring portion near the connecting portion with the holding portion is bent in an arc shape in a direction in which the front surface is convex.   When the spring part is deformed so that at least the movable contact comes into contact with the fixed contact, the stop part that abuts the opposite surface of the spring part to the surface where the plug blade abuts and prevents unnecessary deformation of the spring part, The connector according to claim 1, wherein the connector is provided in a female housing.   5. The connector according to claim 4, wherein the female housing is made of a synthetic resin molded product, and a concave portion is provided on a surface of the stopper portion that contacts the blade receiver.

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