Patent Publication Number: US-8118625-B2

Title: Electrical connector and terminal structure thereof

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The invention relates to an electrical connector, and more particularly to an electrical connector having terminals manufactured by way of pressing so that the material is saved. 
     2. Related Art 
     Terminals of an electrical connector are manufactured by pressing a metal sheet. The terminals after being pressed are separately arranged and connected to a material tape according to a terminal gap of the electrical connector. Thus, the whole row of terminals may be assembled into the plastic base of the electrical connector at a time. 
     In the pressing process of manufacturing the whole row of continuously arranged terminals, the gap region between two neighboring terminals is formed by removing a portion of the material of the metal sheet, which is referred to as a waste product. Thus, it is necessary to reduce the waste product in order to reduce the cost of pressing the terminals. 
     SUMMARY OF THE INVENTION 
     It is therefore an object of the invention to provide an electrical connector and a terminal structure thereof, wherein two rows of terminals are oppositely torn and pressed to save the material. 
     Another object of the invention is to provide an electrical connector having terminals, wherein two rows of terminals are oppositely torn and pressed to save the material. 
     The invention achieves the above-identified objects by providing an electrical connector including a plastic base and at least one row of terminals. The plastic base has at least one row of terminal slots. The at least one row of terminals is disposed in the at least one row of terminal slots of the plastic base. Each of the terminals has an elastically moveable portion, a fixing portion and a pin portion from one end to the other end. The elastically moveable portion has a connection point. The fixing portion is fixed into the terminal slot. The pin portion extends out of the plastic base, and an inserted electrical element may be connected to the connection point and elastically move the elastically moveable portion. The at least one row of terminals is one row of two rows of terminals formed by oppositely tearing and pressing a metal sheet. Each of the terminals of the two rows of terminals has an oppositely torn and cut portion. The oppositely torn and cut portions are seamlessly oppositely connected together. When the one row of terminals is developed into a plane and one of the terminals is reverse-backside joined between the two neighboring terminals, the oppositely torn and cut portion of the terminal is seamlessly jointed to the oppositely torn and cut portions of the two neighboring terminals. 
     According to the above-mentioned structure, the two rows of terminals may be oppositely torn and pressed to save the material. 
     Further scope of the applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention. 
         FIG. 1  is a pictorially exploded view showing a first embodiment of the 
         FIG. 2  is a developed plane view showing one row of terminals according to the first embodiment of the invention. 
         FIG. 3  is a pictorially assembled view showing the first embodiment of the invention. 
         FIG. 4  is an assembled cross-sectional view showing the first embodiment of the invention. 
         FIG. 5  is a schematic illustration showing the flow of manufacturing the terminals by way of pressing according to the first embodiment of the invention. 
         FIG. 6  is a schematic illustration showing the terminals are pressed and manufactured according to the first embodiment of the invention. 
         FIG. 7  is a schematic illustration showing cut surfaces of extensions of two rows of terminals according to the first embodiment of the invention. 
         FIG. 8  is a schematic illustration showing the cut surface jointing state between one terminal of the first of terminals and two terminals in a backside-reverse manner according to the first embodiment of the invention. 
         FIG. 9  is a schematic illustration showing the cut surface jointing state between one terminal of the first row of terminals and two terminals in a front-side-reverse manner according to the first embodiment of the invention. 
         FIG. 10  is a pictorially assembled view showing a second embodiment of the invention. 
         FIG. 11  is a pictorial view showing the terminals according to a third embodiment of the invention. 
         FIG. 12  is a developed plane view showing the terminals according to the third embodiment of the invention. 
         FIG. 13  is a schematic illustration showing the flow of manufacturing the terminals by way of pressing according to the third embodiment of the invention. 
         FIG. 14  is a developed plane view showing the terminals according to a fourth embodiment of the invention. 
         FIG. 15  is a cross-sectional side view showing a fifth embodiment of the invention. 
         FIG. 16  is a pictorially cross-sectional view showing the fifth embodiment of the invention. 
         FIG. 17  is a schematic illustration showing the flow of manufacturing the terminals by way of pressing according to the fifth embodiment of the invention. 
         FIG. 18  is a pictorial front view showing a sixth embodiment of the invention. 
         FIG. 19  is a pictorial view showing one row of terminals according to the sixth embodiment of the invention. 
         FIG. 20  is a pictorial view showing a backside of the sixth embodiment of the invention. 
         FIG. 21  is a pictorially exploded view showing a seventh embodiment of the invention. 
         FIG. 22  is a developed plane view showing one row of terminals according to the seventh embodiment of the invention. 
         FIG. 23  is a pictorially assembled view showing the seventh embodiment of the invention. 
         FIG. 24  is an assembled cross-sectional view showing the seventh embodiment of the invention. 
         FIG. 25  is a schematic illustration showing the flow of manufacturing the terminals by way of pressing according to the seventh embodiment of the invention. 
         FIG. 26  is a developed plane view showing the terminals according to an eighth embodiment of the invention. 
         FIG. 27  is a cross-sectional side view showing a ninth embodiment of the invention. 
         FIG. 28  is a pictorially cross-sectional view showing the ninth embodiment of the invention. 
         FIG. 29  is a schematic illustration showing the flow of manufacturing the terminals by way of pressing according to the ninth embodiment of the invention. 
         FIG. 30  is a pictorial front view showing a tenth embodiment of the invention. 
         FIG. 31  is a pictorial view showing one row of terminals according to the tenth embodiment of the invention. 
         FIG. 32  is a pictorial view showing the backside according to the tenth embodiment of the invention. 
         FIG. 33  is a pictorially exploded view showing an eleventh embodiment of the invention. 
         FIG. 34  is a pictorially exploded view showing the terminals and the plastic base according to the eleventh embodiment of the invention. 
         FIG. 35  is a cross-sectional view showing the eleventh embodiment of the invention. 
         FIG. 36  is a pictorial view showing a usage state according to the eleventh embodiment of the invention. 
         FIG. 37  is a pictorial view showing two rows of terminals oppositely connected together according to the eleventh embodiment of the invention. 
         FIG. 38  is a developed plane view showing the two rows of terminals oppositely connected together according to the eleventh embodiment of the invention. 
         FIG. 39  is a pictorially exploded view showing two rows of terminals according to a twelfth embodiment of the invention. 
         FIG. 40  is a pictorial view showing the two rows of terminals oppositely connected together according to the twelfth embodiment of the invention. 
         FIG. 41  is a pictorially exploded view showing two rows of terminals according to a thirteenth embodiment of the invention. 
         FIG. 42  is a pictorial view showing the two rows of terminals oppositely connected together according to the thirteenth embodiment of the invention. 
         FIG. 43  is a cross-sectional side view showing a fourteenth embodiment of the invention. 
         FIG. 44  is a rear view showing the plastic base according to the fourteenth embodiment of the invention. 
         FIG. 45  shows the usage state of the fourteenth embodiment of the invention. 
         FIG. 46  is a schematic illustration showing the flow of manufacturing the terminals by way of pressing according to the fourteenth embodiment of the invention. 
         FIG. 47  is a schematic illustration showing the flow of manufacturing the terminals by way of pressing according to a fifteenth embodiment of the invention. 
         FIG. 48  is a schematic illustration showing the flow of manufacturing the terminals by way of pressing according to a sixteenth embodiment of the invention. 
         FIG. 49  is a pictorially exploded view showing a seventeenth embodiment of the invention. 
         FIG. 50  is a cross-sectional side view showing the seventeenth embodiment of the invention. 
         FIG. 51  is a schematic illustration showing the flow of manufacturing the terminals by way of pressing according to the seventeenth embodiment of the invention. 
         FIG. 52  is a schematic illustration showing the now of manufacturing the terminals by way of pressing according to an eighteenth embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements. 
     Referring to  FIGS. 1 to 4 , the embodiment includes a plastic base  30  and two rows of terminals  20 . 
     The plastic base  30  is longitudinal and has two rows of separately arranged terminal slots  31 . A longitudinal connection slot  32  is formed between the two rows of terminal slots  31 . The terminal slot  31  has an opening  33  communicating with the connection slot  32 . The opening of the connection slot  32  faces upward and the top end of the opening is formed with a guide-in slant surface  34 . The terminal slot  31  has a resting surface  35  disposed on a top end of the opening  33 , and a lower segment of the terminal slot  31  is formed with an engaging slot  36 . 
     The two rows of terminals  20  are disposed in the two rows of terminal slots  31  of the plastic base  30 . Each row of the terminals  20  is connected to a material tape  10  and is one of the two rows of terminals formed by oppositely tearing and pressing a metal sheet. The two rows of terminals have the same structure. The one row of terminals  20  is assembled into the one row of terminal slots  31  and then the material tape  10  is broken for separation. The terminal  20  has an elastically moveable portion  21 , an extension  22 , a fixing portion  23  and a pin portion  24  from one end to the other end. The elastically moveable portion  21  has first and second ends. The extension  22  has first and second ends. The fixing portion  23  has first and second ends. The first end of the elastically moveable portion  21  is a tail end of the terminal. The second end of the elastically moveable portion is connected to the first end of the extension  22 . The second end of the extension  22  is connected to the first end of the fixing portion  23 . The second end of the fixing portion  23  is connected to the pin portion  24  and the material tape  10 , and a cut mark  25  that may be easily broken is disposed between the fixing portion  23  and the pin portion  24 . The width of the fixing portion  23  is greater than the width of the extension  22  so that the fixing portion  23  is engaged with the engaging slot  36  of the terminal slot  31 . The fixing portion  23  has a first fixing portion segment  28  and a second fixing portion segment  29 , which have different widths, from the first end to the second end. The width A of the second fixing portion segment is greater than the width B of the first fixing portion segment and a barb  210  with the greater width is formed between the first fixing portion segment and the second fixing portion segment. The width of the extension  22  is greater than the width of the elastically moveable portion  21 . The extension  22  is a bent elastic arm and has a first extension segment  26  and a second extension segment  27 , which have the same length, from the first end to the second end. The width C of the second extension segment is greater than the width D of the first extension segment. The first extension segment  26  has a projecting connection point  215 . The connection point  215  extends from the opening  33  to the connection slot  32 . The tail end of the elastically moveable portion  21  elastically rests against the resting surface  35 . The elastically moveable portion  21  has a first elastically moveable portion segment  211  and a second elastically moveable portion segment  212 , which have different widths, from the first end to the second end. The width E of the second elastically moveable portion segment is greater than the width F of the first elastically moveable portion segment, and a concave portion  213  with a smaller width is disposed between the first and second elastically moveable portion segments. The pin portion  24  extends out of the lower end of the plastic base  30 . 
     The features of this embodiment reside in that each row of terminals is one of the two rows of terminals formed by oppositely tearing and pressing a metal sheet. Each terminal of the two rows of terminals has an oppositely torn and cut portion, and the oppositely torn and cut portions are seamlessly oppositely connected together. When the one row of terminals is developed into a plane and one terminal is reverse-backside joined between two neighboring terminals, the oppositely torn and cut portion of the terminal is seamlessly jointed to the oppositely torn and cut portions of the two neighboring terminals. The oppositely torn and cut portion of this embodiment includes the elastically moveable portion  21 , the extension  22  and the fixing portion  23 . The gaps between the elastically moveable portions  21  of the two neighboring terminals sequentially from the first ends to the second ends of the elastically moveable portions  21  are equal to the widths of the fixing portion  23  sequentially from the first end to the second end of the fixing portion  23 , and the gaps between the extensions of the two neighboring terminals sequentially from the first ends to the second ends of the extensions are equal to the widths of the extension sequentially from the second end to the first end of the extension. When the one row of terminals is developed into a plane, the shape of the fixing portion  23  of one of the terminals may be reverse-backside seamlessly jointed to the gap region between the elastically moveable portions  21  of the two neighboring terminals. The shape of the extension  22  may be reverse-backside seamlessly jointed to the gap region between the two extensions  22  of the two neighboring terminals. That is, the gap region between the extensions  22  of the two neighboring terminals is equal to the area of the extension  22 . 
     The gap X between the first elastically moveable portion segments of the two neighboring terminals is equal to the width A of the second fixing portion segment. The gap Y between the second elastically moveable portion segments of the two neighboring terminals is equal to the width B of the first fixing portion segment. The gap Z between the first extension segments of the two neighboring terminals is equal to the width C of the second extension segment. The length of the first extension segment  26  is equal to the length of the second extension segment  27 . The length of the second elastically moveable portion segment  212  is the same as the length of the first fixing portion segment  28 . The width F of the first elastically moveable portion segment plus the width A of the second fixing portion segment is equal to the width D of the first extension segment plus the width C of the second extension segment as well as the width E of the second elastically moveable portion segment plus the width B of the first fixing portion segment. When the one row of terminals is developed into a plane, the shape of the fixing portion  23  may be seamlessly jointed to the gap region between the elastically moveable portions  21  of two neighboring terminals. That is, the first fixing portion segment  28  is seamlessly connected to the second elastically moveable portion segments  212  of the two neighboring terminals, the second fixing portion segment  29  is seamlessly connected to the first elastically moveable portion segments  211  of the two neighboring terminals, and the barb  210  may be seamlessly connected to the concave portions  213  of the two neighboring terminals. In addition, the gap region between the extensions  22  of the two neighboring terminals is equal to the area of the extension  22 . 
     According to the above-mentioned structure, the terminals may be manufactured by way of pressing. As shown in  FIG. 5 , two rows of separately arranged and oppositely connected terminals may be formed by pressing a metal sheet. That is, the fixing portion  23  of each terminal  20  of the first row  1  of terminals may be oppositely connected between the elastically moveable portions  21  of two neighboring terminals  20  of the second row  1  of terminals. The second extension segment  27  of each terminal  20  of the first row  1  of terminals may be oppositely connected between the first extension segments  26  of two neighboring terminals  20  of the second row  1  of terminals. Thus, the metal sheet is firstly completely seamlessly oppositely torn into two rows of terminals, which are then pulled out and bent to form the elastically moveable portions  21 , the extensions  22  and the pin portion  24 . 
     In manufacturing the terminals, the two rows of terminals oppositely connected together are pressed so that no further waste product except for the connected material tape  10  is formed. Thus, the material can be significantly saved, and the manufacturing cost may be reduced. 
     As shown in  FIGS. 6 and 7 , when two rows of same terminals are formed by oppositely tearing and pressing a metal sheet, the width s of the upper mold  81  of the mold is inevitably smaller than the width b of the punched hole  83  of the lower mold  82 . Because the elastically moveable portions  21  of the terminals of the first row  1  of terminals and the fixing portions  23  of the terminals of the second row  1  of terminals are seamlessly oppositely torn, the cut surface of the elastically moveable portion  21  of the terminal of the first row  1  of terminals has an upper segment formed with a smooth surface  86 , and a lower segment formed with a burr  87  after pressing. However, the cut surface of the fixing portion  23  of the terminal of the second row  1  of terminals has a lower segment formed with a smooth surface  86  and an upper segment formed with a burr  87 . The width b of the smooth surface  86  is slightly greater than the width s of the burr  87 . When the fixing portion  23  of the terminal of the second row  1  of terminals is joined to the gap region between the elastically moveable portions  21  of the terminals of the first row  1  of terminals, the cut surface therebetween is formed by the burr  87  and the smooth surface  86  joined together so that the tight connection may be formed. 
     Thus, after pressing, the width of the upper segment of the elastically moveable portion  21  of the terminal of the first row  1  of terminals and the width of the lower segment of the fixing portion  23  of the terminal of the second row  2  of terminals are equal to b, while the width of the lower segment of the elastically moveable portion  21  of the terminal of the first row  1  of terminals and the width of the upper segment of the elastically moveable portion of the terminal of the second row  2  of terminals are equal to s. When the terminal  20  of the first row  1  of terminals is rotated by 180 degrees, the cut surface of the fixing portion is the same as the cut surface of the fixing portion of the terminal  20  of the second row  2  of terminals. 
     As shown in  FIG. 8 , when one terminal of the first row  1  of terminals is joined between two terminals in a backside-reverse manner, the cut surface of its fixing portion  23 ′ and the cut surfaces of the elastically moveable portions  21  of the two neighboring terminals are respectively the burr  87  and the smooth surface  86  joined together so that the tight connection may be formed. 
     As shown in  FIG. 9 , when one terminal of the first row  1  of terminals is reversely joined between two terminals on the same surface, the cut surface of its fixing portion and the cut surfaces of the elastically moveable portions of the two neighboring terminals  20  are respectively the smooth surfaces  86  joined together so that the tight connection cannot be formed. 
     As shown in  FIG. 10 , the second embodiment of the invention is almost the same as the first embodiment except that the plate surface of the first extension segment  26  of the terminal  20  is prodded and pressed to form a projecting connection point  215 . 
     As shown in  FIGS. 11 and 12 , the third embodiment of the invention is almost the same as the first embodiment except that the extension  22  of the terminal  20  only has the width H of one extension. The gap W between the extensions of the two neighboring terminals is equal to the width H of the extension. The length of the second elastically moveable portion segment  212  is the same as the length of the first fixing portion segment  28 . The width F of the first elastically moveable portion segment plus the width A of the second fixing portion segment is equal to two times of the width H of the extension as well as the width E of the second elastically moveable portion segment plus the width B of the first fixing portion segment. 
     The terminals of this embodiment are manufactured by way of pressing. As shown in  FIG. 13 , two rows of separately arranged but completely oppositely connected terminals may be formed by pressing a metal sheet. That is, the second fixing portion segment  29  of each terminal  20  of the first row  1  of terminals may be oppositely connected between the first elastically moveable portion segments  211  of the two neighboring terminals  20  of the second row  2  of terminals. The first fixing portion segment  28  of each terminal  20  of the first row  1  of terminals may be oppositely connected between the second elastically moveable portion segments  212  of the two neighboring terminals  20  of the second row  2  of terminals. The extension  22  of each terminal  20  of the first row  1  of terminals may be oppositely connected between the extensions  22  of the two neighboring terminals  20  of the second row  2  of terminals. Thus, a metal sheet is firstly completely seamlessly oppositely torn into two rows of terminals, which are then pulled out and bent to form the elastically moveable portion  21 , the extension  22  and the pin portion  24 . 
     As shown in  FIG. 14 , the fourth embodiment of the invention is almost the same as the first embodiment except that the fixing portions  23  of the terminal  20  have the same width, while the elastically moveable portions  21  also have the same width. The width of the extension  22  is gradually increased from top to bottom. The gap P between the elastically moveable portions of the two neighboring terminals is equal to the width Q of the fixing portion. When the terminal  20  is developed into a plane, the gap region between the extensions  22  of the two neighboring terminals is equal to the area of the extension  22 . According to the above-mentioned structure, two rows of separately arranged and oppositely connected terminals may be formed by pressing one metal sheet. 
     As shown in  FIGS. 15 and 16 , the fifth embodiment of the invention is a plug of a signal cable and includes a plastic base  30 , two rows of terminals  20  and a metal casing  40 . 
     The plastic base  30  has two rows of separately arranged terminal slots  31 , which are arranged in a vertical direction and face each other. A connection slot  32  is formed between the two rows of terminal slots  31 . The terminal slot  31  extends in a direction from front to rear and communicates with the connection slot  32 . The front end of the connection slot  32  is formed with an insert port and has a guide-in slant surface  34 . The rear end of the terminal slot  31  has an engaging slot  36 , and the front end of the terminal slot has a resting surface  35 . 
     The two rows of terminals  20  are disposed in the two rows of terminal slots  31  of the plastic base  30 . The terminal  20  has an elastically moveable portion  21 , an extension  22 , a fixing portion  23  and a pin portion  24  from one end to the other end. The structure of the terminal  20  of this embodiment is almost the same as that of the first embodiment. The extension  22  has first and second ends, the extension  22  has first and second ends and the fixing portion  23  has first and second ends. The first end of the elastically moveable portion  21  is the tail end of the terminal. The second end of the elastically moveable portion  21  is connected to the first end of the extension  22 . The second end of the extension  22  is connected to the first end of the fixing portion  23 . The second end of the fixing portion  23  is connected to the pin portion  24  and a material tape  10 , and a cut mark  25  that may be easily broken is formed on the connection portion. The width of the fixing portion  23  is greater than the width of the extension  22  so that the fixing portion  23  is engaged with the engaging slot  36  of the terminal slot  31 . The elastically moveable portion  21  elastically rests against the resting surface  35  of the plastic base. The difference between this embodiment and the first embodiment resides in that the terminal  20  of this embodiment extends transversally. The extension  22  has the same width from the first end to the second end thereof. The extension  22  transversally extends into a bent elastic arm and may elastically move up and down. A projecting connection point  215  is formed near a distal end of the extension, and the connection point  215  extends from the terminal slot  31  to the connection slot  32 . 
     The metal casing  40  covers the plastic base  30 . 
       FIG. 17  is a schematic illustration showing the flow of manufacturing the terminals by way of pressing according to the fifth embodiment of the invention. As shown in  FIG. 17 , the structure of the terminals  20  of this embodiment is almost the same as that of the first embodiment because the gaps between the elastically moveable portions  21  of the two neighboring terminals sequentially from the first ends to the second ends of the elastically moveable portions  21  are equal to the widths of the fixing portion  23  sequentially from the second end to the first end of the fixing portion  23 , and the gaps between the extensions of the two neighboring terminals sequentially from the first ends to the second ends of the extensions are equal to the widths of the extension sequentially from the second end to the first end of the extension. When the one row of terminals is developed into a plane, the shape of the fixing portion  23  of one of the terminals may be reverse-backside seamlessly jointed to the gap region between the elastically moveable portions  21  of the two neighboring terminals, and the shape of the extension  22  of the terminal may be reverse-backside seamlessly jointed to the gap region between the extensions  22  of the two neighboring terminals. 
     According to the above-mentioned structure, two rows of separately arranged and oppositely connected terminals may be formed by pressing one metal sheet. The extension  22  and the fixing portion  23  of each terminal  20  of the first row  1  of terminals are respectively seamlessly oppositely connected between the elastically moveable portions  21  and the extensions  22  of the two neighboring terminals  20  of the second row  2  of terminals. Thus, the metal sheet is firstly oppositely cut into the first and second rows  1  and  2  of terminals, which are then separated and bent into the extensions  22 . 
     As shown in  FIGS. 18 to 20 , the sixth embodiment of the invention is an express card connector including a plastic base  30 , one row of terminals  20  and one upper metal cover  45 . 
     The plastic base  30  has one row of separated arranged terminal slots  31  and a connection slot  32 . The terminal slot  31  extends in a back-and-forth direction and communicates with the connection slot  32 . The front end of the terminal slot  31  is also formed with a resting surface  35  and the rear end of the terminal slot  31  is formed with an engaging slot. 
     The one row of terminals  20  is disposed in the one row of terminal slots  31  of the plastic base  30 . The terminal  20  has an elastically moveable portion  21 , an extension  22 , a fixing portion  23  and a pin portion  24  from one end to the other end. The structure of the terminal  20  is almost the same as that of the fifth embodiment. The extension  22  is also elastically moveable in a vertical direction. The difference therebetween is that the pin portion  24  of this embodiment is bent downward to then form a horizontal pin. 
     The upper metal cover  45  covers over the plastic base  30  and has a top surface  46  and opposite first and second side surfaces  47  and  48 . 
     The structure of the terminal  20  of this embodiment is almost the same as that of the fifth embodiment. Similarly, the gaps between the elastically moveable portions  21  of the two neighboring terminals sequentially from the first ends to the second ends of the elastically moveable portions  21  are equal to the widths of the fixing portion  23  sequentially from the second end to the first end of the fixing portion  23 . In addition, the gaps between the extensions of the two neighboring terminals sequentially from the first ends to the second ends of the extensions are equal to the widths of the extension sequentially from the second end to the first end of the extension. When the one row of terminals is developed into a plane, the shape of the fixing portion  23  of one of the terminals may be reverse-backside seamlessly jointed to the gap region between the elastically moveable portions  21  of the two neighboring terminals, and the shape of the extension  22  of the terminal may be reverse-backside seamlessly jointed to the gap region between the extensions  22  of the two neighboring terminals. Thus, the terminals may be formed by way of pressing and the material may be saved. 
     As shown in  FIGS. 21 to 24 , the seventh embodiment of the invention is a memory card module connector including a plastic base  30  and two rows of terminals  20 . 
     The plastic base  30  is longitudinal and has two rows of separately arranged terminal slots  31  separated by a gap and facing each other, wherein a longitudinal connection slot  32  is formed between the terminal slots  31 . The terminal slot  31  extends in a vertical direction and has an opening  33  communicating with the connection slot  32 . The opening of the connection slot  32  faces upward and the upper end of the connection slot  32  is formed with a guide-in slant surface  34 . A lower segment of the terminal slot  31  has an engaging slot  36 . 
     The two rows of terminals  20  are disposed in the two rows of terminal slots  31  of the plastic base  30 . Each row of terminals  20  is connected to a material tape  10 . After the one row of terminals  20  is assembled in the one row of terminal slots  31 , the material tape  10  is broken for separation. The terminal  20  has an elastically moveable portion  21 , a fixing portion  23  and a pin portion  24  from one end to the other end. The lower end of the fixing portion  23  is connected to the material tape  10  and a cut mark  25  is formed therebetween. The width of the fixing portion  23  is greater than the width of the elastically moveable portion  21  and the width of the pin portion  24 . The fixing portion  23  has a barb  210  with a greater width so that it can be engaged with the engaging slot  36  of the terminal slot  31 . The elastically moveable portion  21  having one single width has first and second ends  221  and  222 , wherein the second end  222  is connected to the fixing portion, and the first end  221  is an open end. The elastically moveable portion  21  extends in a vertical direction to form a bent elastic arm which may elastically move laterally. A projecting connection point  215  is disposed near a distal end of the elastically moveable portion  21 . The connection point  215  extends out of the terminal slot  31  from the opening  33  to the connection slot  32 , and the pin portion  24  extends out of the lower end of the plastic base  30 . 
     The feature of this embodiment resides in that each row of terminals is one of two same rows of terminals formed by oppositely tearing and pressing a metal sheet. The terminals of the two rows of terminals have oppositely torn and cut portions seamlessly oppositely connected together. When the one row of terminals is developed into a plane and one of the terminals is reverse-backside joined between the two neighboring terminals, the oppositely torn and cut portion of the terminal is seamlessly jointed to the oppositely torn and cut portions of the two neighboring terminals. The oppositely torn and cut portion of this embodiment is the elastically moveable portion  21 . 
     The gap A between the elastically moveable portions  21  of the two neighboring terminals of the same row of terminals is equal to the width B of the elastically moveable portion  21 . That is, when the one row of terminals is developed into a plane, the shape of the elastically moveable portion  21  of one of the terminals may be reverse-backside seamlessly jointed to the gap region between the elastically moveable portions  21  of the two neighboring terminals. 
     According to the above-mentioned structure, the terminals may be formed by way of pressing. As shown in  FIG. 25 , two rows of separately arranged and oppositely connected terminals may be formed by pressing one metal sheet. The elastically moveable portion  21  of each terminal  20  of the first row  1  of terminals is seamlessly oppositely connected between the elastically moveable portions  21  of the two neighboring terminals  20  of the second row  2  of terminals. So, the metal sheet is firstly oppositely cut into first and second rows  1  and  2  of terminals, which are then separated and bent to form the elastically moveable portions  21  and the pin portions  24 . 
     In manufacturing the terminals, when two rows of terminals oppositely connected together are pressed, the material can be significantly saved and the manufacturing cost may be reduced because the extensions of the two rows of terminals are seamlessly jointed together and the length of the elastically moveable portion  21  occupies a greater portion of the overall terminal. 
     Although the fixing portions  23  of the two rows of terminals are not oppositely connected together, the pressed waste product becomes less because the width of the fixing portion  23  is very large. The hatched portion of  FIG. 22  represents the pressed waste product between the fixing portions of the two neighboring terminals. 
     As shown in  FIG. 26 , the eighth embodiment of the invention is almost the same as the seventh embodiment except that the width of the elastically moveable portion  21  of the terminal  20  of this embodiment gradually increases from the first end  221  to the second end  222 . The gaps C between the elastically moveable portions  21  of the two neighboring terminals  20  of the same row sequentially from the first ends  221  to the second ends  222  are equal to the widths D of the elastically moveable portion  21  sequentially from the second end  222  to the first end  221 . That is, when the one row of terminals is developed into a plane, the shape of the elastically moveable portion  21  of one of the terminals may be reverse-backside seamlessly jointed to the gap region between the elastically moveable portions  21  of the two neighboring terminals. 
     As shown in  FIGS. 27 and 28 , the ninth embodiment of the invention is a plug of a signal cable and includes a plastic base  30 , two rows of terminals  20  and a metal casing  40 . 
     The plastic base  30  has two rows of separately arranged terminal slots  31  arranged in a vertical direction and facing each other. A connection slot  32  is formed between the two rows of terminal slots  31 . The terminal slot extends in a back-and-forth direction and communicates with the connection slot  32 . The front end of the connection slot  32  is formed with an insert port and a guide-in slant surface  34 . The rear end of the terminal slot  31  is formed with an engaging slot  36 . 
     The two rows of terminals  20  are disposed in the two rows of terminal slots  31  of the plastic base  30 . The terminal  20  has an elastically moveable portion  21 , a fixing portion  23  and a pin portion  24  from one end to the other end. The width of the fixing portion  23  is greater than the width of the elastically moveable portion  21  and the width of the pin portion  24  so that the fixing portion  23  can be engaged with the engaging slot  36  of the terminal slot  31 . The elastically moveable portion  21  transversally extends to form a bent elastic arm that may elastically move up and down. A projecting connection point  215  is formed near a distal end of the elastically moveable portion  21 . The connection point  215  extends from the terminal slot  31  to the connection slot  32 , and the pin portion  24  extends out of the plastic base  30 . 
     The metal casing  40  covers over the plastic base  30 . 
       FIG. 29  is a schematic illustration showing the flow of manufacturing the terminals by way of pressing according to the ninth embodiment of the invention. As shown in  FIG. 29 , the structure of the terminals  20  of this embodiment is almost the same as that of the seventh embodiment. Similarly, the gap A between the elastically moveable portions  21  of the same row of two neighboring terminals is equal to the width B of the elastically moveable portion  21 . That is, when the one row of terminals is developed into a plane, the shape of the elastically moveable portion  21  can be reversely seamlessly jointed to the gap region between the elastically moveable portion  21  of the two neighboring terminals. According to the above-mentioned structure, two rows of the terminals oppositely connected together may be manufactured by pressing the same metal sheet. The elastically moveable portion  21  of each terminal  20  of the first row  1  of terminals is seamlessly oppositely connected between the elastically moveable portions  21  of the two neighboring terminals  20  of the second row  2  of terminals. Thus, the metal sheet is firstly oppositely cut into first and second rows  1  and  2  of terminals, which are then separated and bent to form the elastically moveable portions  21 . 
     As shown in  FIGS. 30 to 32 , the tenth embodiment of the invention is an express card connector and includes a plastic base  30 , one row of terminals  20  and an upper metal cover  45 . 
     The plastic base  30  has one row of separately arranged terminal slots  31  and a connection slot  32 . The terminal slot  31  extends in a back-and-forth direction and communicates with the connection slot  32 . 
     The one row of terminals  20  is disposed in the one row of terminal slots  31  of the plastic base  30 . The terminal  20  has an elastically moveable portion  21 , a fixing portion  23  and a pin portion  24  from one end to the other end. The width of the fixing portion  23  is greater than the width of the elastically moveable portion  21  and the width of the pin portion  24  so that the fixing portion  23  may be engaged with the engaging slot of the terminal slot  31 . The elastically moveable portion  21  extends transversally to form a bent elastic arm and may elastically move up and down. A projecting connection point  215  is formed near a distal end of the elastically moveable portion  21 . The connection point  215  extends from the terminal slot  31  to the connection slot  32 , and the pin portion  24  extends out of the lower end of the plastic base  30 . 
     The upper metal cover  45  covers over the plastic base  30  and has a top surface  46  and opposite first and second side surfaces  47  and  48 . 
     The structure of the terminals  20  of this embodiment is almost the same as that of the ninth embodiment. Similarly, the gap A between the elastically moveable portions  21  of two neighboring terminals of the same row is equal to the width B of the elastically moveable portion  21 . That is, when the one row of terminals is developed into a plane, the shape of the elastically moveable portion  21  of one of the terminals may be reverse-backside seamlessly jointed to the gap region between the elastically moveable portions  21  of the two neighboring terminals so that the material is saved when manufacturing the terminals by way of pressing. 
     As shown in  FIGS. 33 to 36 , the eleventh embodiment of the invention is a chip connector and includes an external metal seat  90 , an internal plastic seat  50 , an upper metal cover  60 , a lever  70  and multiple rows of terminals  20 . 
     The external metal seat  90  has a bottom surface  91  and two side surfaces  92  extending upwards. The middle of the bottom surface  91  is formed with a window  93 . Two sides of the front end of the window  93  are formed with first pivot portions  94 , and two sides of the rear end of the window  93  are formed with second pivot portions  95 . 
     The internal plastic seat  50  is disposed on the external metal seat  90 . The upper periphery of the internal plastic seat  50  is formed with flanges  51  extending upwards to surround a placement region  52 , in which a chip may be placed. The placement region  52  has multiple rows of separately arranged terminal slots  53  corresponding to the window  93 . Each terminal slot  53  has a first wall  54  and a second wall  55  for separating the terminal slot  53  from the front and rear rows of terminal slots. A solder ball slot  56  is correspondingly disposed below the terminal slot  53 . A solder ball  57  is disposed in the solder ball slot  56 . The terminal slots  53  communicate with the solder ball slots  56  through channels  58 , respectively. 
     The upper metal cover  60  has a top surface  61  and two side surfaces  62  extending downwards. The middle of the top surface  61  is formed with a window  63 . The front end of the window  63  is formed with a tab  64 , and two sides of the rear end of the window  63  are formed with arced pivot portions  65 , respectively. 
     The lever  70  has a first rod  71  and a second rod  72  perpendicular to each other. The second rod  72  is pivotally connected to the first pivot portion  94  of the front end of the external metal seat  90 . The middle segment of the second rod  72  is curved to form a convex rod  73 . The external end of the first rod  71  is curved to form a handle  74 . When the first rod  71  is rocked backwards, the convex rod  73  may press the tab  64  of the upper metal cover  60  so that the upper metal cover  60  presses the chip  37 . 
     The rows of terminals  20  are respectively disposed in the rows of terminal slots  53  of the plastic base  50 . Each row of terminals  20  is connected to a material tape  10 . The one row of terminals  20  is assembled into the one row of terminal slots  53  and then separated from the material tape  10 . The terminal  20  has an elastically moveable portion  21 , a fixing portion  23  and a pin portion  24  from one end to the other end. The fixing portion  23  is wider than the elastically moveable portion  21  and the pin portion  24  so that it can be positioned with the first wall  54  of the terminal slot. The lower end of the fixing portion  23  is connected to the pin portion  24 . The middle of the upper end of the fixing portion  23  is connected to the elastically moveable portion  21  and two sides of the upper end are formed with connection projections  217  connected to the material tape  10 . The connection portion between the connection projection  217  and the material tape  10  is formed with a cut mark  25  through which the material tape  10  can be easily broken to separate the terminals  20  from the material tape  10 . The elastically moveable portion  21  is a bent elastic arm. The elastically moveable portion  21  firstly extends to the second wall  55  and then turns to the fixing portion  23  and extends across the first wall  54  to be located above the front row of terminal slots  53 . A connection point  28  is formed near a distal end of the elastically moveable portion  21 . The connection point  28 , is the highest point of the terminal and projects from the terminal slot  53  to the placement region  52 . When the connection point  28  is forced, the elastically moveable portion  21  may elastically move up and down. The pin portion  24  extends from the channel  58  to the solder ball slot  56 , and the pin portion  24  is bent and engages with one side of the solder ball  57 . 
     The feature of this embodiment resides in that each row of terminals is one row of two same rows of terminals formed by oppositely tearing and pressing a metal sheet. The terminals of the two rows of terminals have oppositely torn and cut portions seamlessly oppositely connected together. When the one row of terminals is developed into a plane and one of the terminals is reverse-backside joined between the two neighboring terminals, the oppositely torn and cut portion of one of the terminals is seamlessly jointed to the oppositely torn and cut portions of the two neighboring terminals. The oppositely torn and cut portions of this embodiment are the fixing portion  23  and the pin portion  24 . 
     The gap X between the pin portions of the neighboring terminals  20  is equal to the width Y of the fixing portion  23 . The shape of the fixing portion  23  of the terminal may be reverse-backside joined to the gap region between the pin portions  24  of the two neighboring terminals and seamlessly connected to the pin portions  24  of the two neighboring terminals. 
     According to the above-mentioned structure, the gap X between the pin portions of the neighboring terminals  20  is equal to the width Y of the fixing portion  23 . As shown in  FIGS. 37 and 38 , two rows of separately arranged and oppositely connected terminals are formed by pressing the same metal sheet. That is, the fixing portion  23  of each terminal  20  of the first row  1  of terminals may be oppositely connected between the pin portions  24  of the neighboring terminals  20  of the second row  2  of terminals. Thus, the metal sheet can be pressed to form two rows of terminals so that no waste product except for the connected material tape is formed, the material may be significantly saved, and the manufacturing cost can be lowered. 
     As shown in  FIGS. 39 to 40 , the twelfth embodiment of the invention is almost the same as the eleventh embodiment except that the elastically moveable portion  21  of the terminal  20  of this embodiment is connected to one side of the upper end of the fixing portion  23 . The other side of the upper end of the fixing portion  23  is formed with a connection projection  217  connected to the material tape  10 . 
     As shown in  FIGS. 41 and 42 , the thirteenth embodiment of the invention is almost the same as the eleventh embodiment except that one side of the upper end of the fixing portion  23  of the terminal  20  of this embodiments is formed with a connection projection  217  connected to the material tape  10 . The elastically moveable portion  21  is connected to one side of the connection projection  217  and turns an included angle of 90 degrees with respect to the connection projection  217 . In addition, the fixing portion  23  of the terminal  20  is formed with the wider projecting barb  218 , the pin portion  23  has a narrower concave portion  219 , and the barb  218  may be seamlessly joined to the concave portion  219 . 
     As shown in  FIGS. 43 and 44 , the fourteenth embodiment of the invention is a D-SUB electrical connector and includes a plastic base  30 , two rows of terminals  20  and a metal casing  40 . The plastic base  30  has the elevated structure and is formed with terminal slots  31  and connection slots  32 , which are arranged from top to bottom in two rows. The front end of the plastic base  30  has a projection  310 . The front end of the projection  310  is formed with holes  312  corresponding to the connection slots  32 , and formed with depressed engaging slots  36 . The upper end of each terminal slot  31  is formed with the narrower opening  33  communicating with the connection slot  32  so that two sides of the opening are formed with resisting edge  39  and the depressed engaging slots  36 . In addition, a rear cover  38  is provided to cover the back side of the plastic base  30 . 
     The two rows of terminals  20  are correspondingly assembled into the two rows of terminal slots  31  of the plastic base. Each terminal  20  sequentially has an elastically moveable portion  21 , a fixing portion  23  and a pin portion  24  from one end to the other end. The elastically moveable portion  21  is a single arm, has a horizontal plate surface and may elastically move. The plate surface near the distal end of the elastically moveable portion  21  is provided and pressed to form a narrower projecting connection point  215 . The distal end of the elastically moveable portion  21  is reversely bent to form an auxiliary arm  220  projecting in a direction opposite the projecting direction of the connection point  215 . The elastically moveable portion  21  elastically rests against the resisting edge  39 . The connection point  215  projects into the connection slot  32 . The auxiliary arm  220  rests against a wall surface of the terminal slot  31 . The fixing portion  23  has a first end connected to the elastically moveable portion  21 , and a second end connected to the pin portion  24 . 
     The fixing portion  23  is engaged with the engaging slot  36 . The fixing portion  23  is bent into two plate surfaces perpendicular to each other, wherein the longitudinal plate surface extends downward and is connected to the pin portion  24 , and the plate surface of the pin portion  24  is bent so that its cross-section has an inverse-U shape and the pin portion  24  extends out of the plastic base. 
     The metal casing  40  is fit with the front end of the plastic base  30  and covers the periphery of the projection  310  to expose the hole  312  on the front surface of the projection. 
     As shown in  FIG. 45 , when a male plug  68  is inserted, two rows of terminals  69  of the male plug  68  are inserted into the two rows of connection slots  32 . The terminal  69  presses the connection point  215  so that the elastically moveable portion  21  elastically moves downwards while the auxiliary arm  220  is also compressed. Thus, the good elastic contact between the terminal  69  of the male plug  68  and the connection point  215  may be provided according to the elasticity of the elastically moveable portion  21  and the elasticity of the auxiliary arm  220   
     The feature of this embodiment resides in that each row of terminals  20  is one of two rows of same terminals formed by oppositely tearing and pressing a metal sheet. The terminals  20  of the two rows of terminals have oppositely torn and cut portions seamlessly oppositely connected together. When the one row of terminals  20  is developed into a plane and one of the terminals  20  is reverse-backside joined between two neighboring terminals, the oppositely torn and cut portion of the terminal is seamlessly jointed to the oppositely torn and cut portions of the two neighboring terminals. The oppositely torn and cut portion of this embodiment is the fixing portion  23 . The gaps between the fixing portions  23  of the two neighboring terminals of the one row of terminals sequentially from the first ends to the second ends of the two neighboring terminals are equal to the widths of the fixing portion  23  of one of the terminals sequentially from the second end to the first end. The fixing portion  23  of this embodiment has the same width from the first end to the second end. When the one row of terminals  20  is developed into a plane and one of the terminal  20  is reverse-backside joined between the two neighboring terminals, the fixing portion  23  of the terminal is seamlessly jointed to the fixing portions  23  of the two neighboring terminals. 
     The row of terminals  20  of this embodiment is manufactured by way of pressing. As shown in  FIG. 46 , two rows of separately arranged and oppositely connected terminals are formed by pressing a metal sheet. Because the fixing portion  23  of each terminal  20  of the first row  1  of terminals is seamlessly oppositely connected between the fixing portions  23  of the two neighboring terminals  20  of the second row  2  of terminals, the metal sheet is firstly oppositely torn into first and second rows  1  and  2  of terminals, which are then separated and bent to form the fixing portions  23 . 
     As shown in  FIG. 47 , the fifteenth embodiment the invention is almost the same as the fourteenth embodiment except that the plastic base of this embodiment is lower than the fourteenth embodiment. So, the fixing portion  23  and the pin portion  24  become shorter. The oppositely torn and cut portion of this embodiment is also the fixing portion  23 . The fixing portion  23  has the uniform width. When the one row of terminals  20  is developed into a plane and one of the terminals  20  is reverse-backside joined between the two neighboring terminals, the fixing portion  23  of the terminal is seamlessly jointed to the fixing portions  23  of the two neighboring terminals. Two rows of separately arranged and oppositely connected terminals  20  are formed by pressing the same metal sheet. Because the fixing portion  23  of each terminal  20  of the first row  1  of terminals is oppositely connected between the fixing portions  23  of the two neighboring terminals  20  of the second row  2  of terminals, the metal sheet is firstly oppositely torn into first and second rows  1  and  2  of terminals, which are then separated and bent to form the fixing portions  23 . 
     As shown in  FIG. 48 , the sixteenth embodiment of the invention is almost the same as the fifteenth embodiment. The one row of terminals  20  of this embodiment is connected to a material tape  10  and is one of two rows of same terminals formed by oppositely tearing and pressing the metal sheet. Each terminal  20  has an elastically moveable portion  21 , a fixing portion  23  and a pin portion  24  from one end to the other end. The plate surface of the elastically moveable portion  21  is pressed to form a projecting connection point  215 . Two sides of the pin portion  24  are seamlessly jointed to two connection sheets  225 , respectively. Each connection sheet  225  has one end connected to the material tape, and the other end connected to the other end of the fixing portion  23  with a folding mark to facilitate the breaking. 
     Similarly, the feature of this embodiment resides in that each row of terminals  20  is one row of two same rows of terminals formed by oppositely tearing and pressing a metal sheet. The terminals  20  of the two rows of terminals have oppositely torn and cut portions seamlessly oppositely connected together. When the one row of terminals  20  is developed into a plane and one of the terminals  20  is reverse-backside joined between the two neighboring terminals, the oppositely torn and cut portion of the terminal is seamlessly jointed to the oppositely torn and cut portion of the two neighboring terminals. The oppositely torn and cut portion of this embodiment is the elastically moveable portion  21 , the fixing portion  23  and the connection sheets  225  on two sides of the pin portion  24 . When the one row of terminals  20  is developed into a plane and one of the terminals  20  is reverse-backside joined between the two neighboring terminals, the elastically moveable portion  21  and the fixing portion  23  of the terminal are seamlessly jointed to the connection sheets  225  on two sides of the pin portions  24  of the two neighboring terminals. 
     Two rows of separately arranged and oppositely connected terminals  20  of this embodiment are formed by pressing one metal sheet. Because the elastically moveable portion  21  and the fixing portion  23  of each terminal  20  of the first row  1  of terminals are seamlessly oppositely connected to the connection sheets  225  on two sides of the pin portions  24  of the two neighboring terminals  20  of the second row  2  of terminals, the metal sheet is firstly oppositely torn into first and second rows  1  and  2  of terminals, which are then separated and bent to form the fixing portions  23 . 
     As shown in  FIGS. 49 and 50 , the seventeenth embodiment of the invention is an upright D-SUB electrical connector an includes a plastic base  30 , three rows of terminals  20  and a metal casing  40 . 
     The upright plastic base  30  is formed with multiple terminal slots  31  and multiple connection slots  32 , which are arranged in three rows. The upper end of the plastic base  30  is formed with a projection  310 . The front end of the projection  310  has many holes  312  corresponding to the connection slots  32 . Similar to the fourteenth embodiment, each terminal slot  31  is formed with a narrower opening  33  communicating with the connection slot  32 . Two sides of the opening are formed with resisting edges  39 . 
     The three rows of terminals  20  are correspondingly assembled into the three rows of terminal slots  31  of the plastic base. Each of the terminals  20  sequentially has an elastically moveable portion  21 , an extension  22 , a fixing portion  23  and a pin portion  24  from one end to the other end. The elastically moveable portion  21  is a single arm, which has a longitudinal plate surface and may move elastically. The plate surface near the distal end of the elastically moveable portion  21  is prodded and pressed to form a narrower projecting connection point  215 . The elastically moveable portion  21  elastically rests against the resisting edge  39 . The connection point  215  projects to the connection slot  32 . The fixing portion  23  and the extension  22  are engaged with the terminal slot  31 , and the pin portion  24  extends out of the plastic base  30 . 
     The metal casing  40  is fit with the front end of the plastic base  30  and covers the periphery of the projection  310  to expose the hole  312  on the projection. 
     As shown in  FIG. 51 , one row of terminals of this embodiment is one of two rows of same terminals formed by oppositely tearing and pressing a metal sheet and includes a material tape  10  and multiple terminals  20 . 
     The material tape  10  is formed with many separately arranged long holes  11 . 
     The terminals  20  are separated arranged and connected to the material tape  10 . The elastically moveable portion  21  has first and second ends, the extension  22  has first and second ends and the fixing portion  23  has first and second ends. The first end of the elastically moveable portion  21  is the tail end of the terminal. The second end of the elastically moveable portion  21  is connected to the first end of the extension  22 . The second end of the extension  22  is connected to the first end of the fixing portion  23 . The second end of the fixing portion  23  is connected to the pin portion  24  and the material tape  10 . The width of the fixing portion  23  is greater than the width of the elastically moveable portion  21 . Each of the elastically moveable portion  21  and the fixing portion  23  of the terminal of this embodiment has the uniform width from the first end to the second end thereof. The extension  22  has a convex-concave shape from the first end to the second end. 
     The structure of the terminal  20  of this embodiment is almost the same as that of the first embodiment. Similarly, the gaps between the elastically moveable portions  21  of the two neighboring terminals sequentially from the first ends to the second ends of the elastically moveable portions  21  are equal to the widths of the fixing portion  23  sequentially from the second end to the first end of the fixing portion  23 . Also, the gaps between the extensions of the two neighboring terminals sequentially from the first ends to the second ends of the extensions are equal to the widths of the extension sequentially from the second end to the first end of the extension. When the one row of terminals is developed into a plane, the shape of the fixing portion  23  may be reverse-backside seamlessly jointed to the gap region between the elastically moveable portions  21  of the two neighboring terminals. The shape of the extension  22  may be reversely seamlessly jointed to the gap region between the extensions  22  of the two neighboring terminals. 
     According to the above-mentioned structure, two rows of separately arranged and oppositely connected terminals may be formed by pressing one metal sheet. The extension  22  and the fixing portion  23  of each terminal  20  of the first row  1  of terminals are respectively seamlessly oppositely connected between the extensions  22  and the elastically moveable portions  21  of the two neighboring terminals  20  of the second row  2  of terminals. So, the metal sheet is firstly oppositely torn into first and second rows  1  and  2  of terminals, which are then separated and bent to form the elastically moveable portion  21 . 
     As shown in  FIG. 52 , the structure of the terminal  20  of the eighteenth embodiment of the invention is almost the same as that of the seventeenth embodiment except that some gaps  226  are formed when the extension  22  of the terminal  20  of the first row  1  of terminals of this embodiment is oppositely connected the extension  22  of the terminal  20  of the second row  2  of terminals. 
     While the invention has been described by way of examples and in terms of preferred embodiments, it is to be understood that the invention is not limited thereto. To the contrary, it is intended to cover various modifications. Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications.