Patent Publication Number: US-2011059629-A1

Title: Electrical connector

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an electrical connector, more particularly to an electrical connector in which a base sheet is connected to a buckling sheet and the position of the base sheet is able to be longitudinally adjusted so as to be stably soldered on a substrate. 
     2. Description of Related Art 
     Packaging methods for memory modules are mostly as followings: single in-line memory module (SIMM) or dual in-line memory module (DIMM); wherein the data bit for the single in-line memory module is 32 bits while the data bit for the dual in-line memory module is 64 bits, so one dual in-line memory module can process data of two single in-line memory modules, therefore the dual in-line memory module is the main stream memory module sector. 
     For a conventional DIMM electrical connector, an insulation housing is often installed and an insertion slot for receiving a memory module is installed on the insulation housing, the insertion slot is installed with a plurality of first conduction terminals and a plurality of second conduction terminals arranged with an up-down means, and two ends of the insulation housing are respectively installed with a resilient arm having a guiding slot for guiding the electrical card to be inserted in the insertion slot. The insulation housing of the mentioned DIMM electrical connector is made of plastic material and is in an elongated shape, thus high temperature generated during manufacturing or transportation may let said electrical connector deform, so two ends of the insulation housing may have different heights; when the electrical connector, the plural first conduction terminals or the plural second conduction terminals are soldered on a printed circuit board, false soldering may occur due to the height difference, and the quality of electrical connection of the electrical connector will be influenced. 
     SUMMARY OF THE INVENTION 
     One object of the present invention is to provide an electrical connector, in which a base sheet and a buckling sheet can be connected through a buckle point positioning structure, and is adjustable according to deformed height of an insulation housing so as to stably solder the electrical connector on a substrate. 
     Another object of the present invention is to provide an electrical connector, in which a base sheet and a buckling sheet are connected through a first protruding portion positioning structure and is adjustable according to deformed height of an insulation housing so as to stably solder the electrical connector on a substrate. 
     One another object of the present invention is to provide an electrical connector, in which a base sheet and a buckling sheet are connected through a reverse covering positioning structure and is adjustable according to deformed height of an insulation housing so as to stably solder the electrical connector on a substrate. 
     For achieving the objects mentioned above, one solution provided by the present invention is to provide an electrical connector, comprises: an insulation housing having an insertion slot for receiving an electrical card, the insertion slot is installed with a plurality of first conduction terminals and a plurality of second conduction terminals arranged with the first conduction terminals with an up/down means, two ends of the insulation housing are respectively installed with a resilient arm having a guiding slot for guiding the electrical card to be inserted in the insertion slot; a buckling sheet connected to the insulation housing and installed below the resilient arm, an extending sheet is downwardly extended from the buckling sheet, the extending sheet is installed with a buckling hole, and at least one end of the extending sheet is installed with a protruding sheet; and a base sheet having a fastening member, a base hole and at least one folded hooking sheet, wherein the position where the base hole is installed is with respect to the buckling hole, and a limiting sheet is installed in the base hole, when the folded hooking sheet is installed on the extending sheet, the limiting sheet is disposed in the buckling hole and the position of the base sheet is longitudinally adjusted so as to stably solder the fastening sheet on an substrate. 
     For achieving the objects mentioned above, another solution provided by the present invention is to provide an electrical connector, comprises: an insulation housing having an insertion slot for receiving an electrical card, the insertion slot is installed with a plurality of first conduction terminals and a plurality of second conduction terminals arranged with the first conduction terminals with an up/down means, two ends of the insulation housing are respectively installed with a resilient arm having a guiding slot for guiding the electrical card to be inserted in the insertion slot; a buckling sheet connected to the insulation housing and installed below the resilient arm, an extending sheet is downwardly extended from the buckling sheet, the extending sheet is installed with a first protruding portion, a first concave slot is formed at the back side of the first protruding portion; and a base sheet having a fastening member and a second protruding portion, a second concave slot is formed at the back side of the second protruding portion, wherein the position where the second protruding portion is installed is with respect to the first concave slot, when the second protruding portion is installed in the first concave slot, the position of the base sheet is longitudinally adjusted so as to stably solder the fastening sheet on an substrate. 
     For achieving the objects mentioned above, one another solution provided by the present invention is to provide an electrical connector, comprises: an insulation housing having an insertion slot for receiving an electrical card, the insertion slot is installed with a plurality of first conduction terminals and a plurality of second conduction terminals arranged with the first conduction terminals with an up/down means, two ends of the insulation housing are respectively installed with a resilient arm having a guiding slot for guiding the electrical card to be inserted in the insertion slot; a buckling sheet connected to the insulation housing and installed below the resilient arm, an extending sheet is downwardly extended from the buckling sheet, at least one end of the extending sheet is installed with a first folded hooking sheet having a sheet gap on the top end; and a base sheet having a fastening member and at least one second folded hooking sheet, wherein the position where the second folded hooking sheet is installed is staggered with respect to the first folded hooking sheet and the orientation thereof is opposite to the first folded hooking sheet, when the second folded hooking sheet is installed in the sheet gap, the position of the base sheet is longitudinally adjusted, and the first folded hooking sheet is reversely covered the base sheet, so the fastening member is stably soldered on an substrate. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic exploded view of the electrical connector of one preferred embodiment of the present invention; 
         FIG. 2  is a schematic partially-enlarged view illustrating the buckling sheet and the base sheet of one preferred embodiment of the present invention; 
         FIG. 3  is a schematic front view of the assembly of the electrical connector of one preferred embodiment of the present invention; 
         FIG. 4  is a schematic view illustrating the electrical connector of one preferred embodiment of the present invention being connected with an electrical card; 
         FIG. 5  is a schematic exploded view of the electrical connector of another preferred embodiment of the present invention; 
         FIG. 6   a  is a schematic front partially-enlarged view illustrating the buckling sheet and the base sheet of another preferred embodiment of the present invention; 
         FIG. 6   b  is a schematic rear partially-enlarged view illustrating the buckling sheet and the base sheet of another preferred embodiment of the present invention; 
         FIG. 7  is a schematic view illustrating the electrical connector of another preferred embodiment of the present invention being connected with an electrical card; 
         FIG. 8  is a schematic exploded view of the electrical connector of one another preferred embodiment of the present invention; 
         FIG. 9  is a schematic partially-enlarged view illustrating the buckling sheet and the base sheet of one another preferred embodiment of the present invention; 
         FIG. 10  is a schematic view illustrating the electrical connector of one another preferred embodiment of the present invention being connected with an electrical card. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring from  FIG. 1  to  FIG. 4 , wherein  FIG. 1  is a schematic exploded view of the electrical connector of one preferred embodiment of the present invention;  FIG. 2  is a schematic partially-enlarged view illustrating the buckling sheet and the base sheet of one preferred embodiment of the present invention;  FIG. 3  is a schematic front view of the assembly of the electrical connector of one preferred embodiment of the present invention;  FIG. 4  is a schematic view illustrating the electrical connector of one preferred embodiment of the present invention being connected with an electrical card. 
     As shown in figures, the electrical connector provided by the present invention comprises: an insulation housing  10 ; a buckling sheet  20 ; and a base sheet  30 . 
     The insulation housing  10  is made of, e.g. but not limited to, plastic material, and has an insertion slot  11  for receiving an electrical card  60 , the insertion slot  11  is installed with a plurality of first conduction terminals  12  and a plurality of second conduction terminals  13  that are arranged with an up/down means relative to the first conduction terminals  12 . Two ends of the insulation housing  10  are respectively installed with a resilient arm  14  having a guiding slot  15  for guiding the electrical card  60  to be inserted in the insertion slot  11 . The electrical card  60  is, e.g. but not limited to, a DIMM card, the plural first conduction terminals  12  and the plural second conduction terminals  13  are conventional arts therefore no further illustration is provided. 
     The buckling sheet  20  is made of metal material, e.g. but not limited to stainless steel, and is able to be connected to the insulation housing  10  and disposed below the resilient arm  14 , an extending sheet  21  having a buckling hole  22  is downwardly extended from the buckling sheet  20 , at least one end of the extending sheet  21  is installed with a protruding sheet  23 ; in this embodiment, for illustration, two ends of the extending sheet  21  are respectively installed with a protruding sheet  23 . The buckling sheet  20  is further installed with a first positioning portion  24  and a second positioning portion  25 , wherein the first positioning portion  24  is, e.g. but not limited to, disposed in front of the buckling sheet  20  and the second positioning portion  25  is, e.g. but not limited to, disposed at the right side of the buckling sheet  20 . 
     The base sheet  30  is made of metal material, e.g. but not limited to stainless steel, and has a fastening member  31 , a base hole  32  and at least one folded hooking sheet  33 ; wherein the position where the base hole  32  is installed is with respect to the buckling hole  22 , and a limiting sheet  34  is installed in the base hole  32 , the limiting sheet  34  is upwardly extended from the bottom end of the base hole  32  and the distal end thereof is in a bended status, e.g. but not limited to an inward-90-degree bended status; the limiting sheet  34  is not resilient, and functions provided by the limiting sheet  34  are reinforcing the stability of the base sheet  30  for lowering left/right oblique angles thereof. In a primary processing, the folded hooking sheet  33  is outwardly extended and is parallel to the base sheet  30 , and after being disposed in a gap defined above the protruding sheet  23 , the folded hooking sheet  33  is subject to a secondary processing to be inwardly bended for limiting and positioning the base sheet  30 , in this embodiment, for illustration, two ends of the base sheet  30  are respectively installed with a folded hooking sheet  33 . The fastening member  31  is bended so as to be vertical to the base sheet  30 , and is further installed with a fastening hole  35  for being connected to a substrate (not shown) through a soldering means, wherein said substrate is, e.g. but not limited to, a computer mother board. 
     The electrical connector provided by the present invention is further installed with a reinforcing sheet  40 , which is able to be connected to the insulation housing  10  and disposed between the first positioning portion  24  and the second positioning portion  25  of the buckling sheet  20 , for reinforcing the strength of the resilient arm  14 , and the reinforcing sheet  40  is left/right positioned through the first positioning portion  24  and the second positioning portion  25 . 
     As shown in  FIG. 3 , when being assembled, the buckling sheet  20  and the reinforcing sheet  40  are installed in the insulation housing  10 , then the limiting sheet  34  is installed in the buckling hole  22 , the folded hooking sheet  33  is installed at the gap defined above the protruding sheet  23 , then the folded hooking sheet  33  is inwardly bended with the secondary processing means so that the base sheet  30  is fastened on the buckling sheet  20 , because there are a slit defined when the limiting sheet  34  is installed in the buckling hole  22 , the position of the base sheet  30  is able to be longitudinally adjusted then solder is filled in the fastening hole  35 , so that the electrical connector is able to be stably soldered on the substrate to ensure the soldering stability of the electrical connector. Therefore, the electrical connector provided by the present invention is able to be finely adjusted, according to the deformed height of the insulation housing  10 , so as to stably solder the electrical connector on a substrate. 
     As shown in  FIG. 4 , when the electrical card  60  is desired to be inserted in the electrical connector, the electrical card  60  is obliquely inserted in the guiding slot  15  with a certain oblique angle, then the electrical card  60  is inserted and fastened in the insertion slot  11  through the guiding slot  15 , so the connection of the electrical connector provided by the present invention and the electrical card  60  is finished. When the electrical card  60  is desired to be removed from the electrical connector, the reinforcing sheet  40  is outwardly pulled to the second positioning portion  25 , so the electrical card  60  and the insertion slot  11  are preliminarily separated, then a force is applied to remove the electrical card  60  from the insertion slot  11  along the guiding slot  15 , therefore the separation of the electrical connector provided by the present invention and the electrical card  60  is finished. 
     Referring from  FIG. 5  to  FIG. 7 , wherein  FIG. 5  is a schematic exploded view of the electrical connector of another preferred embodiment of the present invention;  FIG. 6   a  is a schematic front partially-enlarged view illustrating the buckling sheet and the base sheet of another preferred embodiment of the present invention;  FIG. 6   b  is a schematic rear partially-enlarged view illustrating the buckling sheet and the base sheet of another preferred embodiment of the present invention;  FIG. 7  is a schematic view illustrating the electrical connector of another preferred embodiment of the present invention being connected with an electrical card. 
     As shown in figures, the electrical connector of another preferred embodiment of the present invention comprises: an insulation housing  110 ; a buckling sheet  120 ; and a base sheet  130 . 
     The insulation housing  110  is made of, e.g. but not limited to, plastic material, and has an insertion slot  111  for receiving an electrical card  160 , the insertion slot  111  is installed with a plurality of first conduction terminals  112  and a plurality of second conduction terminals  113  that are arranged with an up/down means relative to the first conduction terminals  112 . Two ends of the insulation housing  110  are respectively installed with a resilient arm  114  having a guiding slot  115  for guiding the electrical card  160  to be inserted in the insertion slot  111 . The electrical card  160  is, e.g. but not limited to, a DIMM card, the plural first conduction terminals  112  and the plural second conduction terminals  113  are conventional arts therefore no further illustration is provided. 
     The buckling sheet  120  is made of metal material, e.g. but not limited to stainless steel, and is able to be connected to the insulation housing  110  and disposed below the resilient arm  114 , an extending sheet  121  is downwardly extended from the buckling sheet  120 , a first protruding portion  122  is longitudinally installed on the extending sheet  121 , and a first concave slot  123  is formed on the back side of the first protruding portion  122 . The buckling sheet  120  is further installed with a first positioning portion  124  and a second positioning portion  125 , wherein the first positioning portion  124  is, e.g. but not limited to, disposed in front of the buckling sheet  120  and the second positioning portion  125  is, e.g. but not limited to, disposed at the right side of the buckling sheet  120 . 
     The base sheet  130  is made of metal material, e.g. but not limited to stainless steel, and has a fastening member  131  and a second protruding portion  132 , the back side of the second protruding portion  132  is formed with a second concave slot  133 , wherein the position where the second protruding portion  132  is formed is with respect to the first concave slot  123 , so when the second protruding portion  132  is installed in the first concave slot  123 , the position of the base sheet  130  is able to be longitudinally adjusted so as to stably solder the fastening member  131  on a substrate. The fastening member  131  is bended so as to be vertical to the base sheet  130 , and is further installed with a fastening hole  134  for connecting to the substrate (not shown) with a soldering means, wherein the substrate is, e.g. but not limited to, a computer mother board. 
     The ends of the base sheet  130  are respectively installed with a folded hooking sheet  135  serving to further fasten the extending sheet  121  after being inwardly bended, the function thereof are the same as what is disclosed in the previous embodiment. 
     The electrical connector provided by the present invention is further installed with a reinforcing sheet  140 , which is able to be connected to the insulation housing  110  and disposed between the first positioning portion  124  and the second positioning portion  125  of the buckling sheet  120 , for reinforcing the strength of the resilient arm  114 , and the reinforcing sheet  140  is left/right positioned through the first positioning portion  124  and the second positioning portion  125 . 
     As shown in  FIG. 7 , when being assembled, the buckling sheet  120  and the reinforcing sheet  140  are installed in the insulation housing  110 , then the base sheet  130  is installed with a means of from bottom to top so that the second protruding portion  132  of the base sheet  130  is installed in the first concave slot  123 , because there is a small space allowing the second protruding portion  132  to move in the first concave slot  123 , the position of the base sheet  130  is able to be longitudinally adjusted, and after the position of the base sheet  130  is fixed, the folded hooking sheet  135  is installed on the extending sheet  121  and two ends thereof are inwardly bended for fastening the buckling sheet  120 , lastly solder is filled in the fastening hole  134  so that the electrical connector is stably soldered on the substrate to ensure the soldering stability of the electrical connector. Therefore, the electrical connector provided by the present invention is able to be finely adjusted, according to the deformed height of the insulation housing  10 , so as to stably solder the electrical connector on a substrate. 
     Referring to  FIG. 8  to  FIG. 10 , wherein  FIG. 8  is a schematic exploded view of the electrical connector of one another preferred embodiment of the present invention;  FIG. 9  is a schematic partially-enlarged view illustrating the buckling sheet and the base sheet of one another preferred embodiment of the present invention;  FIG. 10  is a schematic view illustrating the electrical connector of one another preferred embodiment of the present invention being connected with an electrical card. 
     As shown in figures, the electrical connector of one another preferred embodiment of the present invention comprises: an insulation housing  210 ; a buckling sheet  220 ; and a base sheet  230 . 
     The insulation housing  210  is made of, e.g. but not limited to, plastic material, and has an insertion slot  211  for receiving an electrical card  260 , the insertion slot  211  is installed with a plurality of first conduction terminals  212  and a plurality of second conduction terminals  213  that are arranged with an up/down means relative to the first conduction terminals  212 . Two ends of the insulation housing  210  are respectively installed with a resilient arm  214  having a guiding slot  215  for guiding the electrical card  260  to be inserted in the insertion slot  211 . The electrical card  260  is, e.g. but not limited to, a DIMM card, the plural first conduction terminals  212  and the plural second conduction terminals  213  are conventional arts therefore no further illustration is provided. 
     The buckling sheet  220  is made of metal material, e.g. but not limited to stainless steel, and is able to be connected to the insulation housing  210  and disposed below the resilient arm  214 , an extending sheet  221  is downwardly extended from the buckling sheet  220 , at least one end of the extending sheet  221  is installed with a first folded hooking sheet  222 , a top end of the first folded hooking sheet  222  is installed with a sheet gap  223 ; in this embodiment, for illustration, two ends of the extending sheet  221  are respectively installed with a first folded hooking sheet  222 . The buckling sheet  220  is further installed with a first positioning portion  224  and a second positioning portion  225 , wherein the first positioning portion  224  is, e.g. but not limited to, disposed in front of the buckling sheet  220  and the second positioning portion  225  is, e.g. but not limited to, disposed at the right side of the buckling sheet  220 . In a primary processing, the first folded hooking sheet  222  is outwardly extended and in parallel to the buckling sheet  220 ; in a secondary processing, the first folded hooking sheet  222  is outwardly bended. 
     The base sheet  230  is made of metal material, e.g. but not limited to stainless steel, and has a fastening member  231  and at least one second folded hooking sheet  232 , wherein the orientation and position where the second folded hooking sheet  232  is installed are opposite and staggered with respect to the first folded hooking sheet  222 . The fastening member  231  is bended so as to be vertical to the base sheet  230 , and is further installed with a fastening hole  233  for connecting to a substrate (not shown) with a soldering means, wherein the substrate is, e.g. but not limited to, a computer mother board. In a primary processing, the second folded hooking sheet  232  is outwardly extended and in parallel to the base sheet  230 ; in a secondary processing, the second folded hooking sheet  232  is inwardly bended. 
     The electrical connector provided by the present invention is further installed with a reinforcing sheet  240 , which is able to be connected to the insulation housing  210  and disposed between the first positioning portion  224  and the second positioning portion  225  of the buckling sheet  220 , for reinforcing the strength of the resilient arm  214 , and the reinforcing sheet  240  is left/right positioned through the first positioning portion  224  and the second positioning portion  225 . 
     As shown in  FIG. 10 , when being assembled, the buckling sheet  220  and the reinforcing sheet  240  are installed in the insulation housing  210 , then the second folded hooking sheet  232  is installed in the sheet gap  223  and is inwardly bended; because a slit is defined in the sheet gap  223 , the position of the base sheet  230  is able to be longitudinally adjusted, after the position of the base sheet  230  is fixed, the first folded hooking sheet  222  is reversely covered the base sheet  230  and is outwardly bended for fastening the buckling sheet  220 , so the base sheet  230  is fastened on the buckling sheet  220 , lastly solder is filled in the fastening hole  233  so that the electrical connector is stably soldered on the substrate to ensure the soldering stability of the electrical connector. Therefore, the electrical connector provided by the present invention is able to be finely adjusted, according to the deformed height of the insulation housing  210 , so as to stably solder the electrical connector on a substrate. Thus, the electrical connector provided by the present invention is novel comparing to conventional electrical connectors. 
     It is to be understood, however, that even though numerous characteristics and advantages of the present embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.