Abstract:
A dummy connector includes a main body including an opening into which a real connector is to be inserted, and a first holding portion and a second holding portion installed respectively on surfaces which face to each other in the opening, and for holding the real connector by sandwiching from a direction of height of the real connector.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
   The present application is based on Japanese patent application No. 2008-003423, filed on Jan. 10, 2008, the entire contents of which are incorporated herein by reference. 
   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   This invention relates to a dummy connector and, in particular, to a dummy connector having a structure that is capable of holding any real connector having several varieties of widths corresponding to different numbers of terminals by a single main body. 
   2. Description of the Related Art 
   Conventionally, a connector caps are known, the connector caps being formed corresponding to the shape of connector housing of a counterpart connector to be connected by the connector caps (refer to JP-A-1998-247549 (patent document 1). 
   The connector cap has a connector housing to be connected to the counterpart connector so that it can save the trouble of fabricating a mold and it can be produced at a low price and in a large variety. Further, the connector cap uses electrical wires with terminals connected to the counterpart connector as a joining tool to be joined to the counterpart connector so that it can be prevented from being lost even if the connector cap is removed from the counterpart connector. 
   However, when the conventional connector cap is used for a vehicle harness, the counterpart connector to which the connector cap is connected can not be fixed to the vehicle, thus there has been a problem that unpleasant noise occurs by vibration of the vehicle and the connector cap should be prepared corresponding to the counterpart connector respectively so as to raise the increase in cost. 
   SUMMARY OF THE INVENTION 
   It is an object of the invention to provide a dummy connector having a structure that is capable of holding any real connector comprising several varieties of widths corresponding to different numbers of terminals by a single main body.
     (1) According to one aspect of the invention, a dummy connector, includes:   

   a main body including an opening into which a real connector is to be inserted; and 
   a first holding portion and a second holding portion installed respectively on surfaces which face to each other in the opening, and for holding the real connector by sandwiching from a direction of height of the real connector.
     (2) According to another aspect of the invention, a dummy connector, includes:   

   a main body including an opening into which a real connector is to be inserted; and 
   a first holding portion and a second holding portion installed respectively on surfaces which face to each other in the opening, and for holding the real connector by sandwiching from a direction of height of the real connector, wherein: 
   the first holding portion has a first concave portion formed based on a lock portion installed in the real connector, and when the first holding portion sandwiches a base portion of the real connector having a terminal between the second holding portion, so as to hold the real connector. 
   (Advantages of the invention) 
   According to the above-mentioned constitution, any real connector comprising several varieties of widths corresponding to different numbers of terminals can be held. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The preferred embodiments according to the invention will be explained below referring to the drawings, wherein: 
       FIG. 1A  is a schematic view showing a vehicle inside mounting a dummy connector according to an embodiment of the invention; 
       FIG. 1B  is a cross-sectional view taken along the line A-A in  FIG. 1A  showing vicinity of an instrument panel; 
       FIG. 2A  is a perspective view showing a dummy connector according to an embodiment of the invention and a female connector; 
       FIG. 2B  is a back view showing a dummy connector according to an embodiment of the invention; 
       FIG. 3  is a perspective view showing a dummy connector according to an embodiment of the invention; 
       FIG. 4  is a perspective view showing a female connector used for a dummy connector according to an embodiment of the invention; 
       FIG. 5A  is a schematic view showing a dummy connector according to an embodiment of the invention; 
       FIG. 5B  is a schematic view showing a dummy connector according to an embodiment of the invention; 
       FIG. 5C  is a schematic view showing a dummy connector according to an embodiment of the invention; 
       FIG. 6A  is a schematic view showing a structure of holding portion of a dummy connector according to a modification of the invention; 
       FIG. 6B  is a schematic view showing a structure of holding portion of a dummy connector according to a modification of the invention; 
       FIG. 6C  is a schematic view showing a structure of holding portion of a dummy connector according to a modification of the invention. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   (Structure of Vehicle) 
     FIG. 1A  is a schematic view showing a vehicle inside mounting a dummy connector according to an embodiment of the invention, and  FIG. 1B  is a cross-sectional view taken along the line A-A in  FIG. 1A  showing vicinity of an instrument panel. 
   Hereinafter, an embodiment in a case that a dummy connector according to the invention is mounted on a vehicle will be explained. 
   Vehicle  1  includes an instrument panel  10  on which meters, gauges and switches located in front of a driver seat are installed, the instrument panel  10  having a switch panel  11  which is a decoration board for mounting switches  3 A,  3 B and a dummy connector  2 . In the switch panel  11 , as one example, two dummy connectors  2  and the switches  3 A,  3 B are mounted. The switch  3 A is, for example a switch that controls a movement of an intelligent AFS (Adaptive Front-Lighting System) depending on state of running of the vehicle  1  and for automatically moving an illumination axis of a head lamp in horizontal direction, and the switch  3 B is a switch that controls a movement of a front window having heating coils herein. The dummy connector  2  is a connector to be mounted in place of switches, for example, when switches of an electronic device which can be installed as an option extra (for example, audio device, fog lamp, rear wiper and the like) are not mounted on the switch panel  11 . 
   As shown in  FIG. 1B , the switch panel  11  includes a claw portion  12  and an opening portion  13 , wherein the claw portion  12  is a portion that is connected to the projection portion  27  of the dummy connector  2  so as to fix the dummy connector  2  to the switch panel  11 , and the opening portion  13  is a portion into which the convex portion  26  of the dummy connector  2  is inserted. 
   (Structure of Dummy Connector  2 ) 
     FIG. 2A  is a perspective view showing a dummy connector according to an embodiment of the invention and a female connector,  FIG. 2B  is a back view showing a dummy connector according to an embodiment of the invention and  FIG. 3  is a perspective view showing a dummy connector according to an embodiment of the invention.  FIG. 2B  shows a view seen from the side of female connector  4  to be inserted into the opening  21 . 
   The dummy connector  2  is formed, as one example by injection molding from ABS resin, has a rectangular shape, and has an outline of structure that includes in one side a main body  20  having the opening  21  into which the female connector  4  is inserted and a holding portion  22  for holding the female connector  4  inserted into the opening  21 . 
   The main body  20  of the dummy connector  2  has an outline of structure that includes a convex portion  26  to be inserted into the opening portion  13  of the switch panel  11 , a projection portion  27  to be connected to the claw portion  12  of the switch panel  11  and a through hole  28  as a second concave portion passing through the main body  20 . Further, with regard to the size, as one example, the main body  20  has a dimension that width W 1  is 23.2 mm, height H 1  is 38.2 mm (40 mm when the projection portion  27  is included) and depth L 1  is 30.5 mm, the projection portion  27  has a dimension that width W 2  is 5 mm, and the convex portion  26  has a dimension that width W 3  is 19.3 mm, height H 2  is 30.3 mm and depth L 2  is 9.1 mm. Further, the through hole  28  is not particularly limited in a hole structure passing through the main body  20  and can be a structure to which a lock  44  to be hereinafter described can be connected. 
   The holding portion  22  of the dummy connector  2  has an outline of structure that includes first and second L-shaped convex parts  23 ,  24  as a first holding portion having an almost L-shaped structure and rising from the upper surface of the opening  21  to the center direction of the opening  21 , and a T-shaped convex part  25  as a second holding portion having an almost T-shaped structure and rising from the lower surface of the opening  21  facing to the first and second L-shaped convex parts  23 ,  24  to the center direction of the opening  21 . 
   As shown in  FIG. 2B , the first and second L-shaped convex parts  23 ,  24  have an outline of structure that includes leg parts  23   a ,  24   a  rising vertically from the upper surface of the opening  21 , and contacting parts  23   b ,  24   b  formed on the leg parts  23   a ,  24   a  so as to be in parallel with the long side of the opening  21 . The contacting parts  23   b ,  24   b  have bottom surfaces  23   c ,  24   c  to contact the female connector  4 , and a concave portion  22   a  as a first concave portion is formed by the leg parts  23   a ,  24   a . Since a lock board  43  of the female connector  4  to be hereinafter described is inserted into the concave portion  22   a , the distance S 1  between the leg parts  23   a  and the leg parts  24   a  is set, as one example, to 7 mm. This is due to making the distance S 1  responsive to the female connector  4  having the lock board  43  of 7 mm in width, but the distance S 1  is not particularly limited in this and if the distance S 1  is changed according to the size of the lock board  43  of the female connector  4 , the concave portion  22   a  can be used in response to a large variety of the female connectors  4 . 
   As shown in  FIG. 2B , the T-shaped convex part  25  has an outline of structure that includes a leg part  25   a  rising vertically from the lower surface of the opening  21  facing to the first and second L-shaped convex parts  23 ,  24 , and a contacting part  25   b  formed on the leg part  25   a  so as to be in parallel with the contacting parts  23   b ,  24   b . The T-shaped convex part  25  has a top surface  25   c  to contact the female connectors  4 . Further, as shown in  FIG. 2B , the distance S 2  between the bottom surfaces  23   c ,  24   c  and the top surface  25   c  is set, as one example, to 4.6 mm, this being based on the height of a base portion  40  of the female connectors  4 . However, the distance S 2  is not particularly limited in this and if the distance S 2  is changed according to the shape of the connector to be inserted, the holding portion  22  can hold not only the female connector but also a male connector, and can be used for the female connector  4  having terminals formed in plural rows. 
   (Structure of Female Connector  4 ) 
     FIG. 4  is a perspective view showing a female connector used for a dummy connector according to an embodiment of the invention. The female connector  4  is, as one example, a connector to be connected to switches of an electronic device (not shown) to be mounted on the switch panel  11 , and is connected to an ECU (Electronic Control Unit) (not shown) of the vehicle  1  through the electrical wire  5 . 
   The female connector  4  is formed, as one example, by injection molding from PBT (Polybutylene terephthalate) resin, has a rectangular shape, and has an outline of structure that includes a base portion  40  having a plurality of terminal through holes  40   a  arranged in a row, into which the electrical wires  5  with a terminal at the top portion are inserted, a convex part  41  formed in an almost rectangular lychgate shape from the end of left side to the end of opposing right side of the base portion  40  and having a hemicycle concave part  46  with a shape formed like a fingertip, and a lock portion  42  to be hereinafter described. 
   The lock portion  42  has an outline of structure that includes a lock board  43  whose one end is fixed in the end of the base portion  40  and whose another end is free, a lock  44  disposed on the surface of the lock board  43  and being a projecting portion to be connected to a concave portion of a counterpart connector so as to fix the counterpart connector and the female connector, and a depression portion  45  disposed on the side of free end of the lock board  43 . The lock board  43 , when the depression portion  45  projecting to the hemicycle concave part  46  is depressed by a finger, elastically deforms downwards since one end of the lock board  43  is fixed to the base portion  40 , and when the finger is released from the depression portion  45 , the lock board  43  returns to the original position since force of restitution is exerted. 
   The height H 3  of the base portion  40  of the female connector  4  is different according to the number of electrical wires  5  connected to the female connector  4 , but as one example, it is 4.4 mm in the type that the terminal through holes  40   a  are arranged in a row. The height H 4  Which increased height of the lock board  43  is 6.5 mm. The distance S 2  between the bottom surfaces  23   c ,  24   c  and the top surface  25   c  shown in  FIG. 2B  is set to be larger than the height H 3  so that the base portion  40  of the female connector  4  can be inserted, then it can be used in response to a large variety of the female connectors  4 . Further, the width W 4  of the lock board  43  is, as one example, 7 mm or 10 mm, and the concave portion  22   a  of the dummy connector  2  is corresponding to the width W 4 . The width W 5  of the base portion  40  is different according to the number of terminals, but as one example, it is 4 mm in case of four terminals, and 13.2 mm in case of five terminals. 
   (Operation) 
   Hereinafter, an operation of a dummy connector in the embodiment of the invention will be explained in detail with reference to  FIGS. 1 to 4  and  FIGS. 5A to 5C  to be hereinafter described. 
     FIGS. 5A to 5C  are schematic views showing a dummy connector according to an embodiment of the invention. In  FIGS. 5A to 5C , the number of terminals in the female connector  4  is represented by the number ( 1  to  6 ) shown in the drawings so as to be easily understandable. 
   The base portion  40  of the female connector  4  is inserted into the space between the first and second L-shaped convex parts  23 ,  24  and the T-shaped convex part  25  of the dummy connector  2 . Then, the lock portion  42  is inserted into the concave portion  22   a  formed by the first and second L-shaped convex parts  23 ,  24 . The female connector  4  is further inserted into the dummy connector  2 , then the slope of the lock  44  inclining to the insertion direction contacts the main body  20 , and the lock board  43  is depressed by the main body  20  through the lock  44 . The female connector  4  is furthermore inserted into the dummy connector  2 , then the upper surface of lock  44  is gone ahead while being contacted with the upper surface of opening  21 , and the lock  44  is connected to the through hole  28 , and the base portion  40  of the female connector  4  is sandwiched between the first and second L-shaped convex parts  23 ,  24  and the T-shaped convex part  25  so that the female connector  4  is held in the dummy connector  2 . 
   The height H 1  of dummy connector  2  is larger than the width W 5  of female connector  4  so that the dummy connector  2  can hold a large variety of the female connectors  4  corresponding to the width W 5  being smaller than the height H 1 , such as the female connector  4  having four terminals shown in  FIG. 5A , the female connector  4  having five terminals shown in  FIG. 5B , and the female connector  4  having six terminals shown in  FIG. 5C  by a single main body  20 . 
   (Advantage of Embodiment) 
   According to the above-mentioned embodiment, any female connector  4  having several varieties of widths corresponding to different numbers of terminals can be held by a single main body  20  so that the vehicle  1  can be prevented from occurring unpleasant noise while it is moving. Further, it is not necessary to prepare the dummy connector  2  in response to every female connector  4  having several varieties of widths corresponding to different numbers of terminals so that wrong assembly can be prevented and production cost can be reduced. 
   (Modification) 
     FIGS. 6A to 6C  are schematic views showing a structure of holding portion of a dummy connector according to a modification of the invention. Further, in the following description, with regard to components having the same construction and function as the above-mentioned embodiment has, the same references are used, and detail explanation is omitted. In the modification, the difference among the structures of holding portion  22  will be mainly described. 
   A dummy connector  2 A shown in  FIG. 6A  has a structure that the first and second L-shaped convex parts  23 ,  24  shown in  FIG. 2B  have only the leg parts  23   a ,  24   a , and has the leg parts  23   a ,  24   a  and T-shaped convex part  25  as the holding portion  22 . 
   When the dummy connector  2 A sandwiches the bottom surface and top surface of base portion  40  of female connector  4  between the bottom surfaces  23   c ,  24   c  and the top surface  25   c  and the lock portion  42  is inserted into the concave portion  22   a , the lock  44  connects to the through hole  28  so that the dummy connector  2 A can hold the female connector  4  stably. 
   A dummy connector  2 B shown in  FIG. 6B  has leg parts  25   e,    25   f  instead of the T-shaped convex part  25  shown in  FIG. 6A , and has the leg parts  23   a ,  24   a ,  25   e,    25   f  as the holding portion  22 . 
   When the dummy connector  2 B sandwiches the bottom surface and top surface of base portion  40  of female connector  4  between the bottom surfaces  23   c ,  24   c  and the top surfaces  25   g,    25   h  and the lock portion  42  is inserted into the concave portion  22   a , the lock  44  connects to the through hole  28  so that the dummy connector  2 B can hold the female connector  4  stably. 
   A dummy connector  2 C shown in  FIG. 6C  has the leg parts  23   a ,  24   a  and the T-shaped convex part  25  as the holding portion  22 . Further, the dummy connector  2 C has first to fourth convex parts  29   a  to  29   d  on the side surface of opening  21 , and the third and fourth convex parts are connected to the T-shaped convex part  25 . Furthermore, a joining portion  29   e  is formed between the leg parts  23   a ,  24   a , and it has a through hole  29   f  to which the lock  44  of the female connector  4  is to be connected. 
   When the dummy connector  2 C sandwiches the bottom surface and top surface of base portion  40  of female connector  4  between the bottom surfaces  23   c ,  24   c  and the top surface  25   c  and the lock portion  42  is inserted into the concave portion  22   a , the lock  44  connects to the through hole  29   f.  The leg parts  23   a ,  24   a  and the T-shaped convex part  25  are strengthened by the first to fourth convex parts  29   a  to  29   d  and the joining portion  29   e  so that the dummy connector  2 C can hold the female connector  4  stably. 
   Although the invention has been described with respect to the specific embodiments for complete and clear disclosure, the appended claims are not to be thus limited but are to be construed as embodying all modifications and alternative constructions that may occur to one skilled in the art which fairly fall within the basic teaching herein set forth.