Patent Publication Number: US-10784594-B2

Title: Adapter connector

Description:
CROSS-REFERENCE TO RELATED PATENT APPLICATION 
     This non-provisional application claims priority to and the benefit of, pursuant to 35 U.S.C. § 119(a), patent application Serial No. CN201810251292.4 filed in China on Mar. 26, 2018. The disclosure of the above application is incorporated herein in its entirety by reference. 
     Some references, which may include patents, patent applications and various publications, are cited and discussed in the description of this disclosure. The citation and/or discussion of such references is provided merely to clarify the description of the present disclosure and is not an admission that any such reference is “prior art” to the disclosure described herein. All references cited and discussed in this specification are incorporated herein by reference in their entireties and to the same extent as if each reference were individually incorporated by reference. 
     FIELD 
     The present invention relates to an adapter connector, and more particularly to an adapter connector capable of converting two different series of connectors. 
     BACKGROUND 
     The background description provided herein is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this background section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present disclosure. 
     With the development of society and the growth in living standards of people, private cars owned by each family are increasing. Thus, car after-sale services grow increasingly, and modification of car headlights is an important field. Common car headlights include various different series in different specifications. Therefore, a series of headlights cannot match with another series of headlights. For example, receptacles of a 9006 series can only match with plugs of the 9006 series, and receptacles of an h11 series can only match with plugs of the h11 series. However, during modification of the headlights, a consumer generally selects headlights preferably according to performances or personal preferences. Thus, the selected headlights and an own car may be in different series. Because each car is equipped with fixed headlight receptacles, and each series of headlights has uniquely matching plugs and receptacles, it is necessary to replace original receptacles of a car during replacement of other series of headlights, which is inconvenient in operation, and increases the modification cost. 
     Therefore, a heretofore unaddressed need to design a novel adapter connector exists in the art to address the aforementioned deficiencies and inadequacies. 
     SUMMARY 
     The present invention is directed to an adapter connector capable of converting two different series of connectors. 
     To achieve the foregoing objective, the present invention adopts the following technical solutions. 
     An adapter connector has two ends configured to be mated with a first mating connector and a second mating connector respectively. The adapter connector includes: an insulating body being integrally formed, the insulating body having a first mating section and a second mating section in a front-rear direction, wherein the first mating section is concavely provided with a plurality of terminal slots, the second mating section is concavely provided with an insertion space, the terminal slots are communicated with the insertion space, the first mating section is mated with the first mating connector, and the insertion space accommodates the second mating connector; and a plurality of terminals, each of the terminals having an elastic contact portion at one end thereof and a flat plate contact portion at the other end thereof, wherein the elastic contact portion is accommodated in a corresponding one of the terminal slots and electrically connected with the first mating connector, and the flat plate contact portion is accommodated in the insertion space and configured to be electrically connected with the second mating connector. 
     In certain embodiments, a top wall and a bottom wall opposite to each other and a first side wall and a second side wall being connected with the top wall and opposite to each other are provided on each of the terminals, the top wall, the bottom wall, the first side wall and the second side wall surroundingly define an insertion opening, and the elastic contact portion of each of the terminals bends backward from the first side wall to extend into the insertion opening. 
     In certain embodiments, the bottom wall has a first stopping sheet extending into the insertion opening, the top wall has a second stopping sheet extending into the insertion opening, the elastic contact portion is located closer to the second side wall relatively than the first stopping sheet and the second stopping sheet, and the first stopping sheet and the second stopping sheet stop the elastic contact portion from moving away from the second side wall. 
     In certain embodiments, a projection of at least one of the first stopping sheet and the second stopping sheet in the front-rear direction is located between a projection of the elastic contact portion and a projection of the flat plate contact portion in the front-rear direction. 
     In certain embodiments, each of the terminal slots has a first inner wall surface corresponding to the first side wall and a second inner wall surface corresponding to the second side wall, the first inner wall surface has a first stopping portion extending inward, the second inner wall surface has a second stopping portion extending inward, the second stopping portion is located behind the first stopping portion, the second side wall has a first position limiting portion, the first side wall has a second position limiting portion extending toward a direction away from the insertion opening, the first stopping portion is mated with the first position limiting portion, and the second stopping portion is mated with the second position limiting portion. 
     In certain embodiments, the first stopping portion is located in front of the first position limiting portion, and the second stopping portion is located behind the second position limiting portion. 
     In certain embodiments, an insulating member is accommodated in the insulating body, the insulating member has a third stopping portion, a third position limiting portion extends from the bottom wall, and the third stopping portion is mated with the third position limiting portion and located behind the third position limiting portion. 
     In certain embodiments, a projection of the third position limiting portion and a projection of the second side wall are partially overlapped in the front-rear direction. 
     In certain embodiments, the bottom wall has a first reinforcing portion located behind the insertion opening, and the first reinforcing portion further comprises a first opening hole. 
     In certain embodiments, the insertion space is further provided with an accommodating area extending forward, an insulating member is accommodated in the accommodating area, each of two opposite sides of the insulating member is provided with an engagement block, the engagement block is engaged with a front end surface of the accommodating area, the insulating member is provided with a plurality of grooves corresponding to the terminal slots, and each of the flat plate contact portions penetrates through each of the grooves and enters the insertion space. 
     In certain embodiments, each of the terminals further has an oblique section provided in front of the flat plate contact portion, and the insulating member has a plurality of guide chamfers corresponding to the oblique sections of the terminals, and each of the guide chamfers is in front of a corresponding one of the grooves. 
     In certain embodiments, an inner surface of the accommodating area has a horizontal section and a plastic reducing section provided sequentially in the front-rear direction, and the insulating member abuts the horizontal section to form a gap between the insulating member and the plastic reducing section. 
     In certain embodiments, each of the terminal slots accommodates a corresponding one of the terminals, and the insertion space accommodates the terminals. 
     Further, another adapter connector is provided, which has a front end and a rear end, the front end of the adapter connector being configured to be mated with a 9006 connector, and the rear end of the adapter connector being configured to be mated with an h11 connector. The adapter connector includes: an insulating body being provided with a first mating section and a second mating section in a front-rear direction, wherein the first mating section is concavely provided with a plurality of terminal slots, the second mating section is concavely provided with an insertion space, the terminal slots are communicated with the insertion space, the first mating section is mated with the 9006 connector, and the insertion space accommodates the h11 connector; and a plurality of terminals, each of the terminals being provided with a first contact portion at a front end thereof and a second contact portion at a rear end thereof, wherein the first contact portion is accommodated in a corresponding one of the terminal slots and electrically connected with the 9006 connector, and the second contact portion is accommodated in the insertion space and configured to be electrically connected with the h11 connector. 
     In certain embodiments, an intermediate portion is provided between the first mating section and the second mating section, the intermediate portion has at least one buckling arm extending from an outer surface of the intermediate portion to be above the first mating section and not to pass beyond a front end of the first mating section, an outer wall surface of the second mating section has at least one protruding block, and the 9006 connector and the h11 connector are mated with the buckling arm and the protruding block respectively. 
     In certain embodiments, a waterproof ring is sleeved over the first mating section, and the waterproof ring is located between the first mating section and the buckling arm. 
     Meanwhile, an adapter connector is provided, configured to be mated with a first mating connector and a second mating connector respectively. The adapter connector includes: a first body having a first mating section, wherein the first mating section is concavely provided with a plurality of terminal slots, and the first mating section is mated with the first mating connector; a second body, wherein a front end of the second body covers a periphery of a rear end of the first body, and a rear end of the second body is forward concavely provided with an insertion space configured to accommodate the second mating connector; and a plurality of terminals, each of the terminals comprising a first contact member and a second contact member, wherein the first contact member is accommodated in a corresponding one of the terminal slots, the first contact member has a first contact portion and a first connecting portion connected with each other and provided sequentially in a front-rear direction, the first contact portion is electrically connected with the first mating connector, the second contact member has a second contact portion and a second connecting portion connected with each other, the second contact portion is accommodated in the insertion space, the second contact portion is electrically connected with the second mating connector, and the second connecting portion enters the corresponding one of the terminal slots and abuts the first connecting portion. 
     In certain embodiments, a front end of the second body has an accommodating space communicated with the insertion space, and the second connecting portion and the rear end of the first body are accommodated in the accommodating space. 
     In certain embodiments, at least one protrusion is provided on the first connecting portion or the second connecting portion, and the first connecting portion and the second connecting portion are electrically connected via the protrusion. 
     In certain embodiments, the first connecting portion has a first portion and a second portion opposite to each other and two third portions connected with the first portion, the first portion and the two third portions surroundingly define a receiving opening, an elastic resisting sheet extends from the second portion into the receiving opening, the second connecting portion has a base and a bending arm extending forward from the base and bending reversely toward the base, the base abuts the elastic resisting sheet, and the bending arm abuts the top wall. 
     Compared with the related art, certain embodiments of the present invention have the following beneficial effects. During modification of car headlights, if the headlights in different series from original car headlights are selected, the headlights in different series can be converted only by the adapter connector without replacing original car headlight receptacles, such that a series of headlight plugs may easily match with another series of headlight receptacles, thereby providing an easy operation and saving time, and also reducing the modification cost. 
     These and other aspects of the present invention will become apparent from the following description of the preferred embodiment taken in conjunction with the following drawings, although variations and modifications therein may be effected without departing from the spirit and scope of the novel concepts of the disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings illustrate one or more embodiments of the disclosure and together with the written description, serve to explain the principles of the disclosure. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an embodiment, and wherein: 
         FIG. 1  is a perspective view of mating of an adapter connector according to a first embodiment of the present invention. 
         FIG. 2  is a perspective exploded view of an adapter connector according to the first embodiment of the present invention. 
         FIG. 3  is a bottom view of a terminal according to the first embodiment of the present invention. 
         FIG. 4  is a rear view of the adapter connector in  FIG. 2  before installing an insulating member. 
         FIG. 5  is a sectional view of  FIG. 1  along an A-A direction. 
         FIG. 6  is a perspective exploded view of an adapter connector according to a second embodiment of the present invention. 
         FIG. 7  is a sectional view of  FIG. 6 . 
         FIG. 8  is a partial enlarged view of  FIG. 7 . 
         FIG. 9  is a perspective exploded view of an adapter connector according to a third embodiment of the present invention. 
         FIG. 10  is a sectional view of  FIG. 9  along a B-B direction. 
     
    
    
     DETAILED DESCRIPTION 
     The present invention is more particularly described in the following examples that are intended as illustrative only since numerous modifications and variations therein will be apparent to those skilled in the art. Various embodiments of the invention are now described in detail. Referring to the drawings, like numbers indicate like components throughout the views. As used in the description herein and throughout the claims that follow, the meaning of “a”, “an”, and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein and throughout the claims that follow, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise. Moreover, titles or subtitles may be used in the specification for the convenience of a reader, which shall have no influence on the scope of the present invention. 
     It will be understood that when an element is referred to as being “on” another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being “directly on” another element, there are no intervening elements present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. 
     Furthermore, relative terms, such as “lower” or “bottom” and “upper” or “top,” may be used herein to describe one element&#39;s relationship to another element as illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in one of the figures is turned over, elements described as being on the “lower” side of other elements would then be oriented on “upper” sides of the other elements. The exemplary term “lower”, can therefore, encompasses both an orientation of “lower” and “upper,” depending of the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as “below” or “beneath” other elements would then be oriented “above” the other elements. The exemplary terms “below” or “beneath” can, therefore, encompass both an orientation of above and below. 
     As used herein, “around”, “about” or “approximately” shall generally mean within 20 percent, preferably within 10 percent, and more preferably within 5 percent of a given value or range. Numerical quantities given herein are approximate, meaning that the term “around”, “about” or “approximately” can be inferred if not expressly stated. As used herein, the terms “comprising”, “including”, “carrying”, “having”, “containing”, “involving”, and the like are to be understood to be open-ended, i.e., to mean including but not limited to. 
     The description will be made as to the embodiments of the present invention in conjunction with the accompanying drawings in  FIGS. 1-10 . In accordance with the purposes of this invention, as embodied and broadly described herein, this invention, in one aspect, relates to an adapter connector. 
     Referring to  FIG. 1  to  FIG. 5 , which show an adapter connector  100  according to a first embodiment of the present invention. The adapter connector  100  is used to be connected with a first mating connector  200  and a second mating connector  300 . In the present embodiment, the first mating connector  200  is a 9006 connector, and the second mating connector  300  is an h11 connector. The adapter connector  100  includes an insulating body  1 , two terminals  2  and an insulating member  3 . In the present embodiment, the adapter connector  100  is assembled by installing the terminals  2  into the insulating body  1  and then installing the insulating member  3  onto the insulating body  1 . Referring to  FIG. 1 ,  FIG. 2  and  FIG. 5 , the insulating body  1  is an integrally formed structure, and is provided with a first mating section  11 , an intermediate section  12  and a second mating section  13  in a front-rear direction. The first mating section  11  is used to be mated with the first mating connector  200 , and the first mating section  11  is backward concavely provided with a plurality of terminal slots  14 . The insulating member  3  is provided with a plurality of grooves  311  corresponding to the terminal slots  14 . In the present embodiment, there are two terminal slots  14  in the insulating body  1 , and correspondingly, there are two grooves  311  in the insulating member  3 . An opening of each terminal slot  14  is T-shaped. Each terminal slot  14  has a first inner wall surface  141  and a second inner wall surface  142  opposite to each other. The first inner wall surface  141  has a first stopping portion  1411  extending into the terminal slot  14 , and the second inner wall surface  142  has a second stopping portion  1421  extending into the terminal slot  14 . The first stopping portion  1411  is located in front of the second stopping portion  1421 , and the first stopping portion  1411  and the second stopping portion  1421  are located on different planes. The intermediate section  12  has an outer surface  121 , which is concavely provided with two through holes  123 . Two buckling arms  122  extend forward from the outer surface  121  to be above the first mating section  11  and not to pass beyond a front end of the first mating section  11 . In the present embodiment, there are two buckling arms  122 . In other embodiments, there may be one buckling arm. The buckling arms  122  are used to be mated with the first mating connector  200 . The second mating section  13  is used to be mated with the second mating connector  300 . An outer wall surface  131  of the second mating section  13  is provided with four protruding blocks  132 . In the present embodiment, there are four protruding blocks  132 . In other embodiments, there may be one protruding block. The protruding blocks  132  are used to be mated with the second mating connector  300  for fool proofing. Meanwhile, the second mating section  13  is forward concavely provided with an insertion space  15 , and the insertion space  15  is communicated with the two terminal slots  14 . When the adapter connector  100  is mated with the second mating connector  300 , the insertion space  15  accommodates the second mating connector  300 . The insertion space  15  is further formed with an accommodating area  16  extending forward. The accommodating area  16  has a front end surface  161 . The accommodating area  16  communicates with the terminal slots  14  and the insertion space  15  and is located between the terminal slots  14  and the insertion space  15  in the front-rear direction. An inner surface of the accommodating area  16  are provided with a horizontal section  162  and a plastic reducing section  163  respectively. The front end surface  161 , the horizontal section  162  and the plastic reducing section  163  are provided sequentially in the front-rear direction. Thus, the accommodating area  16  is gradually narrowed from rear to front. The adapter connector  100  further includes a waterproof ring  17 , and the waterproof ring  17  is sleeved over the first mating section  11  and located between the buckling arms  122  and the first mating section  11 . 
     Referring to  FIG. 2  to  FIG. 5 , a top wall  21  and a bottom wall  22  opposite to each other and a first side wall  23  and a second side wall  24  being connected with the top wall  21  and opposite to each other are provided on each terminal  2 . The top wall  21 , the bottom wall  22 , the first side wall  23  and the second side wall  24  surroundingly define a square-shaped insertion opening  25 . The first side wall  23  of each of the terminals  2  has a first contact portion  231  bending backward from the first side wall  23  and extending into the insertion opening  25 , and a second position limiting portion  232  extending from the first side wall  23  toward a direction away from the insertion opening  25 . In the present embodiment, the first contact portion  231  is an elastic contact portion. Each first contact portion  231  is correspondingly accommodated in a corresponding terminal slot  14 . The first contact portion  231  is used to be electrically connected with the first mating connector  200 . The second position limiting portion  232  is mated with the second stopping portion  1421 , and the second position limiting portion  232  is located in front of the second stopping portion  1421 . The second side wall  24  is partitioned into two portions by a clearance. A front end of the second side wall  24  is provided with a first position limiting portion  241 . The first position limiting portion  241  is mated with the first stopping portion  1411 , and the first position limiting portion  241  is located behind the first stopping portion  1411 . The top wall  21  and the bottom wall  22  have the same structure and are provided symmetrically. The bottom wall  22  has a first stopping sheet  221  extending into the insertion opening  25 , and the top wall  21  has a second stopping sheet  211  extending into the insertion opening  25 . The first contact portion  231  is located closed to the second side wall  24  relatively than the first stopping sheet  221  and the second stopping sheet  211 , and the first stopping sheet  221  and the second stopping sheet  211  stop the first contact portion  231  from moving away from the second side wall  24 . In a direction perpendicular to the first side wall  23 , the bottom wall  22  has a first reinforcing portion  222 , and the top wall  21  has a second reinforcing portion  212 . The first reinforcing portion  222  and the second reinforcing portion  212  are located behind the insertion opening  25 , and are attached to an inner wall surface of the terminal slot  14 . The first reinforcing portion  222  has a first opening hole  2221 , and the second reinforcing portion  212  has a second opening hole  2121 . In addition, the bottom wall  22  further has a third position limiting portion  223 , and the top wall  21  further has a fourth position limiting portion  213 . The third position limiting portion  223  and the fourth position limiting portion  213  are respectively formed by bending the bottom wall  22  and the top wall  21  toward each other and are located behind the first reinforcing portion  222  and the second reinforcing portion  212 . A projection of the third position limiting portion  223  and a projection of the fourth position limiting portion  213  in the front-rear direction are only partially overlapped with the second side wall  24 . Meanwhile, each terminal  2  has an oblique section  26  behind the third position limiting portion  223  and the fourth position limiting portion  213 . The oblique section  26  is accommodated in the accommodating area  16 , and the height thereof is gradually reduced from front to rear. A second contact portion  27  is provided behind the rear end of each terminal  2 , namely behind the oblique section  26 . The second contact portion  27  is folded into a flat plate shape. In the present embodiment, the second contact portion  27  is a flat plate contact portion. The second contact portion  27  is accommodated in the insertion space  15 . The two second contact portions  27  share the insertion space  15 , and the second contact portions  27  are used to be electrically connected to the second mating connector  300 . A projection of the first stopping sheet  221  and a projection of the second stopping sheet  211  in the front-rear direction are located between the projection of the first contact portion  231  and the projection of the second contact portion  27  in the front-rear direction. 
     Referring to  FIG. 2  and  FIG. 5 , the insulating member  3  is partially accommodated in the accommodating area  16 . The insulating member  3  has a base body  31  and the two grooves  311  provided on the base body  31 . Meanwhile, the insulating member  3  has a pair of parallel extending arms  32  extending forward from the base body  31  out of the accommodating area  16 , and two guide blocks  33  protruding forward from the base body  31 . Each extending arm  32  abuts the horizontal section  162  and forms a gap  164  with the plastic reducing section  163 . Each extending arm  32  has a third stopping portion  322  at the front end thereof and an engagement block  321  at a side thereof. The third stopping portion  322  stops the third position limiting portion  223  and the fourth position limiting portion  213 , and the third stopping portion  322  is located behind the third position limiting portion  223  and the fourth position limiting portion  213 . The engagement block  321  is located in the through hole  123  and engaged with the front end surface  161 . Each guide block  33  has a guide chamfer  331 . During installation of the insulating member  3 , the guide chamfer  331  can guide the terminals  2  to smoothly penetrate through the grooves  311 , each of the flat plate contact portions  27  penetrates through each of the grooves  311  and enters the insertion space  15 , and after the insulating member  3  is installed, the guide chamfer  331  corresponds to the oblique section  26 . 
     Referring to  FIG. 6  to  FIG. 8 , which show an adapter connector  100  according to a second embodiment of the present invention. The adapter connector  100  includes a first body  4 , a second body  5 , a first contact member  6  and a second contact member  7 . The first body  4  has a first mating section  41  at the front end thereof and a protruding portion  42  at the rear end thereof. The first mating section  41  is used to be mated with the first mating connector  100 . The protruding portion  42  is used to be mated with the second body  5 . A waterproof ring  17  is sleeved over the first mating section  41 . The first mating section  41  is concavely provided with two terminal slots  43 . Each terminal slot  43  penetrates through the first mating section  41  and the protruding portion  42 . An outer surface of the protruding portion  42  is concavely provided with two first fitting holes  421 . The two fitting holes  421  are located on two opposite sides of the protruding portion  42  and communicated with the terminal slots  43 . A front end of the second body  5  is backward concavely provided with an accommodating space  51 , and a rear end of the second body  5  is forward concavely provided with an insertion space  52 . Two terminal holes  53  communicating the accommodating space  51  and the insertion space  52  are provided therebetween. Meanwhile, an outer surface of the second body  5  is provided with two second fitting holes  54  opposite to each other. The accommodating space  51  is used to accommodate and cover the protruding portion  42 . The insertion space  52  is used to accommodate the second mating connector  300 . A fourth stopping portion  531  extends inward from an inner wall surface of each terminal hole  53 . The second fitting holes  54  are communicated with the accommodating space  51 . When the first body  4  is mated with the second body  5 , two fixing blocks  44  penetrate through the first fitting holes  421  and the second fitting holes  54  to fix them. The first contact member  6  has a first contact portion  61  and a first connecting portion  62  which are connected with each other and provided sequentially in the front-rear direction. The first contact portion  61  and the structure between the first contact portion  61  and the first connecting portion  62  are the same as the terminal  2  of the first embodiment, and the difference exists in the structure of the first connecting portion  62 . The first connecting portion  62  is formed by bending two opposite sides of the first contact member  6  outward. Each first connecting portion  62  has two protrusions  621  provided on the surface thereof. In other embodiments, there may be one or more protrusions. The second contact member  7  has a second connecting portion  71 , a fifth position limiting portion  72  and a second contact portion  73  which are connected with each other and provided sequentially in the front-rear direction. The second connecting portion  71  is formed by bending two opposite sides of the second contact member  7  outward, and the second connecting portion  71  is accommodated in the accommodating space  51 . When the first body  4  is mated with the second body  5 , the second connecting portion  71  enters a corresponding terminal slot  43 , and abuts and is electrically connected with the first connecting portion  62  via the protrusions  621 . In the present embodiment, the protrusions  621  are provided on the first connecting portion  62 , and in other embodiments, the protrusions  621  may be provided on the second connecting portion  71 . The fifth position limiting portion  72  is located behind the fourth stopping portion  531  and is stopped by the fourth stopping portion  531 . The structure and function of the second contact portion  73  are the same as those of the second contact portion  27  in the first embodiment. 
     Referring to  FIG. 9  and  FIG. 10 , which show an adapter connector  100  according to a third embodiment of the present invention is shown. A difference between the third embodiment and the second embodiment exists in that the first body  4  and the second body  5  are fixed via a fixing member  45  during mating. The fixing member  45  is injection-molded outside the first body  4  and the second body  5 . Another difference exists in the structures of the first connecting portion  62  and the second connecting portion  71 . The first connecting portion  62  has a first portion  622  and a second portion  623  opposite to each other, and two third portions  624  connected with the first portion  622 . The first portion  622 , the second portion  623  and the two third portions  624  form a receiving opening  625 . An elastic resisting sheet  626  extends from the second portion  623  into the receiving opening  625 . The second connecting portion  71  has a base  711  and a bending arm  712  extending forward from the base  711  and bending toward the base  711 . In the present embodiment, the receiving opening  625  is located on the first contact member  6 , and the bending arm  712  is located on the second contact member  7 . In other embodiments, the bending arm  712  may be provided on the first contact member  6 , and the receiving opening  625  may be provided on the second contact member  7 . The base  711  abuts the elastic resisting sheet  626 , and the bending arm  712  abuts the first portion  622 , so as to implement an electrical connection between the first connecting portion  62  and the second connecting portion  71 . 
     To sum up, the electrical adapter connector  100  according to certain embodiments of the present invention has the following beneficial effects: 
     1. Functionally, different series of headlights can be converted by the adapter connector  100 , such that a series (e.g., 9006 series) of headlight plugs may easily match with another series (e.g., h11 series) of headlight receptacles, thereby providing an easy operation and saving time, and reducing the modification cost. 
     2. Structurally, each terminal  2  is integral in the first embodiment, which has a simple structure and a simple manufacturing procedure and saves time. 
     3. The first contact portion  231  is stopped by the first stopping sheet  221  and the second stopping sheet  211 , such that when the adapter connector  100  is mated with the first mating connector  200 , the first contact portion  231  cannot be damaged by excessive deformation. 
     4. The first reinforcing portion  222  and the second reinforcing portion  212  are provided on each of the terminals  2 , such that the first reinforcing portion  222  and the second reinforcing portion  212  are attached to the inner wall surface of the terminal slot  14 , and are unlikely to shake when the adapter connector  100  is mated with the first mating connector  200  and the second mating connector  300 , thereby ensuring a steady contact. Meanwhile, the weight of each terminal  2  can be reduced by providing the first opening hole  2221  and the second opening hole  2121 , thus meeting the light weight requirement of the terminals  2 . 
     5. The first position limiting portion  241  is stopped by the first stopping portion  1411 , such that the terminal  2  can be prevented from deviating forward when the second mating connector  300  is mated with the adapter connector  100 , thereby ensuring a steady connection. 
     6. The second position limiting portion  232  is stopped by the second stopping portion  1421 , the third position limiting portion  223  and the fourth position limiting portion  213  are stopped by the third stopping portion  322 , and the engagement block  321  is engaged with the front end surface  161 , such that the terminals  2  can be prevented from deviating backwards when the first mating connector  200  is mated with the adapter connector  100 , thereby ensuring a steady connection. 
     7. The first connecting portion  62  is provided with the protrusions  621 , and the first connecting portion  62  abuts the second connecting portion  71  via the protrusions  621 , such that a steady contact between the first connecting portion  62  and the second connecting portion  71  can be ensured. 
     8. The base  711  abuts the elastic resisting sheet  626 , and the bending arm  712  abuts the first portion  622 , such that the second connecting portion  71  is in multi-point elastic contact with the first connecting portion  62 , thereby implementing a steady electrical connection between the first connecting portion  62  and the second connecting portion  71 . 
     The foregoing description of the exemplary embodiments of the invention has been presented only for the purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. 
     The embodiments are chosen and described in order to explain the principles of the invention and their practical application so as to activate others skilled in the art to utilize the invention and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the present invention pertains without departing from its spirit and scope. Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing description and the exemplary embodiments described therein.