TWM523217U - Wire-to-board connector - Google Patents

Description

Wire-to-board connector

The invention provides a wire-to-board connector, in particular, the outer part of the insulating seat of the board end connector is combined with the shielding shell, and the contact elastic piece of the shielding shell is in contact with the grounding layer of the line end connector circuit board. And the grounding shrapnel is in contact with the grounding terminal of the terminal group to form a multi-point contact effect, which ensures the integrity and stability of the high-frequency signal transmission.

According to the rapid development of today's electronic technology and the Internet, electronic products such as computers and notebook computers are gradually being introduced, and they are gradually becoming lighter, thinner, shorter, smaller, easier to carry, and speeding up in computing and transmission speed. To reduce the size of electronic products, electronic components with different functions inside electronic products need to be more miniaturized and precise, and the overall structural strength needs to be strengthened to cope with the current development trend of electronic products.

However, due to the fact that the overall design of computers or notebook computers is becoming more and more miniaturized, the space for internal placement of electronic devices (such as hard disks, CD players, etc.) is relatively narrow, and the host is caused. The electronic components and electrical connection components on the board need to be changed in order to fully utilize the limited space inside the computer, and the improvement of the performance of the computer or notebook computer is not solely due to the speed of the processor, but also needs to be relatively improved. The transmission speed of the output/input interface of peripheral devices is sufficient. Therefore, in order to consider the commonality of these peripheral devices, the number of devices that can be supported, and the increase in transmission rate and overall system performance, different transmissions have been developed. The connector of the specification interface, which is widely used in the SATA transmission interface, has a higher transmission rate and more powerful functions, or is a connector for the SATA II and SAS transmission interfaces of the server storage technology. Its data storage and reading speed can be adapted to the speed that the processor can handle.

Moreover, the peripheral devices in the market are the most common and widely used by the public. Use, still use the universal serial bus (USB) as the mainstream, and use the USB to support the hot plug function plug and play, and the use is easier, although today USB3.0 has become the most popular mainstream transmission interface, and Fully used in various external electronic products, but in order to face the challenges of other high-speed transmission interfaces, the USB3.1 Type-C connector is introduced, which is slightly larger in size than the existing USB2.0 Mirco-B. It can support higher power charging and power supply capability, and can reach up to 10Gbps in transmission speed. It can be inserted into the front and back sides of the support. It is no longer necessary to distinguish the front and back sides and it is easier to insert the interface. It can also be expanded to be suitable for applications such as tablet computers. Lightweight mobile devices such as smart phones are particularly expected by the market.

Because of connectors in traditional computers or notebooks (such as board-to-board connectors) , wire-to-board connectors, etc.) usually use the male connector and the female connector for mating, and the signal or power can be transmitted to the control circuit through the transmission cable and the circuit board, so that the computer or the notebook computer The internal electronic device and the motherboard can be used for signal or power transmission, but the wire-to-board connector includes an insulating base, a terminal set and a cable, and the combination of the cable and the terminal group is mostly Clamping is used to make the distance between the terminals at least 1mm, and the terminal group is easy to use at a specific speed according to the industry's usual high-frequency signal arrangement (GND-Signal-Signal-GND). The crosstalk is generated, which in turn affects the integrity of the signal transmission. Therefore, it is generally common practice for the outer cover of the connector to be covered with a metal shielded housing, and the ground portion of the connector is guided to the ground of the circuit board via the shielded housing. It has the effect of grounding, but as the size of the connector is miniaturized and the transmission speed is greatly improved, and the number of terminals is increased and the distribution is more dense, the adjacent terminals are too close to each other or the structure of the terminal itself is caused by high-frequency signal transmission. Interference (such as electromagnetic interference, noise or crosstalk between adjacent terminals) is very serious, and the electromagnetic interference of external terminals is also increased, which is the relevant manufacturers in this industry. The key to effective research to improve it.

Therefore, in view of the above-mentioned problems and shortcomings, the new creators have collected such relevant information through various evaluations and considerations, and have used the trial and modification of many years of R&D experience in this industry to design such wire-to-board connections. The new type of device was born.

The main purpose of the present invention is that the front end of the insulating seat of the board end connector is a terminal set provided with abutting portion and the abutting portion, and one or more extensions are arranged on the top of the shielding shell combined with the outside of the insulating seat body. The contact elastic piece is inserted into the docking space, and more than one grounding elastic piece is disposed at the bottom of the shielding shell. When the circuit board combined with the front part of the insulative part of the insulative housing of the wire end connector is inserted into the docking space of the shielding case, The contact portions of the terminal group are respectively electrically connected to the corresponding first contacts on the circuit board, and a common ground loop is formed on the ground layer of the circuit board by the contact springs of the shielding shell, and the grounding shrapnel is formed. The effect of forming multi-point contact on the ground terminal of the terminal group respectively can effectively reduce the path of electromagnetic wave and crosstalk interference on the shielding shell, so as to enhance the electromagnetic wave and crosstalk interference transmission to the ground release. The speed ensures the integrity and stability of high-frequency signal transmission.

The second purpose of this creation is to insert the line connector horizontally on the board end. When the connector is shielded in the casing, the guiding pillars of the insulating body at the two sides of the plugging portion are embedded in the corresponding rail grooves on the mating portion of the insulating seat, and the guiding pillars are matched with the rail slot and the inside of the shielding shell. The docking space structure is designed such that the circuit board of the line end connector can only be inserted into the docking space of the shielding shell in a specific direction to prevent the introduction of load current or overcurrent to the terminal group when the circuit board is reversely inserted. The signal terminal causes a short circuit or burnout of the internal components of the electronic device at the output end, and can prevent the terminal group from being deformed by the push of the unsuitable connector to cause deformation or structural damage and has the function of preventing reverse insertion.

Another purpose of this creation is that the line end connector is located behind the circuit board. a plurality of second contacts are provided on the lesser side of the surface, and a plurality of solder joints at the periphery of the metal casing are connected to the conductive layer formed around the second contact, and the metal is The outer casing is covered by the outer cover of the second contact. When the preset cable of the wire end connector transmits the high frequency signal through the circuit board, the metal outer casing and the circuit board form a common ground loop, or the metal outer casing can be used Connected to the casing of the output electronic device, so that the electromagnetic wave interference generated around the wire end connector can be inductively absorbed by the metal casing and guided to the conductive layer or the casing of the circuit board for grounding release, thereby improving the grounding and The effect of shielding.

1‧‧‧Board connector

11‧‧‧Insulated body

111‧‧‧Docking Department

1111‧‧‧floor

1112‧‧ ‧ rail slot

112‧‧‧Terminal slot

113‧‧‧through holes

114‧‧‧ recess

1141‧‧‧Studs

12‧‧‧Terminal group

12a‧‧‧ Signal Terminal

12b‧‧‧ Grounding terminal

121‧‧‧Fixed Department

122‧‧‧Contacts

123‧‧‧Weld Department

13‧‧‧Shield housing

130‧‧‧ docking space

1301‧‧‧ openings

131‧‧‧Contact shrapnel

1311‧‧‧Bounce arm

1312‧‧‧Contact end

1313‧‧‧"

132‧‧‧ Grounding shrapnel

1321‧‧‧Cantilever

1322‧‧‧Resistance

133‧‧‧ side panels

1331‧‧‧ Positioning buckle

134‧‧‧ positioning foot

1341‧‧‧ Grounding feet

1342‧‧‧Extension

14‧‧‧ boards

140‧‧‧Breaking

141‧‧‧Metal joints

142‧‧‧ jack

143‧‧‧ Positioning card hole

2‧‧‧Wire end connector

21‧‧‧Insulated body

210‧‧‧Place space

211‧‧‧ Sockets

2111‧‧‧ Guide pillar

2112‧‧‧Inlay

2113‧‧‧ buckle groove

212‧‧‧Join hole

213‧‧‧ accommodating slots

214‧‧‧Positioning column

22‧‧‧PCB

221‧‧‧ first joint

222‧‧‧ Grounding layer

223‧‧‧second junction

224‧‧‧ Conductive layer

225‧‧‧through hole

23‧‧‧ Positioning members

231‧‧‧Substrate

232‧‧‧Fixed column

24‧‧‧Metal casing

240‧‧‧Manage space

241‧‧‧ soldering feet

242‧‧‧ buckle

The first figure is a three-dimensional appearance of the preferred embodiment of the present invention.

The second drawing is a perspective exploded view of the preferred embodiment of the present invention.

The third figure is an exploded perspective view of another perspective of the preferred embodiment of the present invention.

The fourth figure is an exploded view of the creative board end connector.

The fifth figure is an exploded perspective view of another perspective of the author of the board end connector.

The sixth figure is an exploded view of the line connector of the creation line.

The seventh figure is an exploded perspective view of another perspective of the creative line end connector.

Figure 8 is a side cross-sectional view of the preferred embodiment of the present invention prior to docking.

Figure 9 is a side cross-sectional view (I) of the preferred embodiment of the present invention after docking.

Figure 10 is a side cross-sectional view (ii) of the preferred embodiment of the present invention after docking.

Figure 11 is a perspective view of another preferred embodiment of the present invention.

Figure 12 is a perspective exploded view of another preferred embodiment of the present invention.

Figure 13 is a side cross-sectional view of another preferred embodiment of the present invention (1)

Figure 14 is a side cross-sectional view (2) of another preferred embodiment of the present invention.

In order to achieve the above objectives and effects, the technical means and its construction adopted in the present invention are described in detail in the preferred embodiment of the present invention, and the structure and function are as follows.

Please refer to the first, second, third, fourth, fifth, sixth and seventh figures, which are respectively a three-dimensional external view, an exploded view of the preferred embodiment, an exploded view of another perspective, and a board-end connector. The three-dimensional exploded view, the three-dimensional exploded view of another viewing angle, the exploded view of the line end connector, and the three-dimensional exploded view of the other viewing angle, as can be clearly seen from the figure, the wire-to-board connector of the present invention includes a board. The end connector 1 and the wire end connector 2 are described in detail in the main components and features of the present invention, wherein the board end connector 1 has an insulating base 11 and is provided in front of the insulating base 11 The abutting portion 111 of the bottom plate 1111, and the two sides of the bottom plate 1111 are respectively A rail groove 1112 having a downwardly recessed shape is formed, and a plurality of terminal slots 112 are formed on the bottom plate 1111 so as to extend through the front and rear sides of the insulating base 11 , and more than one bottom portion of the bottom plate 1111 is inserted into the terminal slot 112 . The through hole 113 is further disposed in the terminal slot 112 with the terminal group 12 conforming to the USB Type-C basic specification, and the terminal group 12 includes the plurality of signal terminals 12a and at least four ground terminals 12b, and the signal terminal 12a and the ground The terminal 12b has a fixing portion 121 positioned in the terminal slot 112, and the fixing portion 121 of the grounding terminal 12b is respectively corresponding to the through hole 113 of the insulating base 11 and has a through terminal at the side of the fixing portion 121. The groove 112 extends into the contact portion 122 at the upper portion of the bottom plate 1111, and each of the fixing portions 121 extends outwardly from the other side of the contact portion 122 to provide a welded portion 123 exposed to the outside of the insulating base 11.

Furthermore, the outer portion of the insulating base 11 is covered with a shield casing 13 for the cover. Abutting space 130 having an opening 1301 in front is formed in the hollow interior of the shielding case 13, and the top of the shielding case 13 is adjacent to the opening 1301 and is provided with more than one contact elastic piece 131 extending into the docking space 130. The contact elastic pieces 131 respectively have a plurality of floating elastic arms 1311 which are inclined downward toward the rear, and a curved contact end 1312 is formed at the end of the elastic arm 1311, and the two adjacent elastic arms 1311 are respectively forwardly forward. The bottom of the shielding shell 13 is formed with one or more grounding elastic pieces 132 extending into the through hole 113, and the grounding elastic piece 132 has a cantilever 1321 extending obliquely upward toward the front, and the ends of the cantilever 1321 are respectively formed. There is a curved arc-shaped abutting end 1322 on the fixing portion 121 of the grounding terminal 12b corresponding to the terminal group 12; and the opposite side plates 133 are formed on both sides of the shielding shell 13 and are disposed at the bottom edge of the side plate 133. There are at least one positioning leg 134, and each positioning leg 134 is formed with a horizontal connection of an outward turning. The foot 1341 is further bent and extended in the direction of the docking space 130 at the opening 1301 in front of the side plate 133 to extend the positioning buckle 1331.

The board end connector 1 of the present invention is a soldering portion 12 of the terminal group 12 3 and the positioning leg portion 134 of the shielding shell 13 is respectively positioned on the corresponding metal contact 141 (such as a signal contact or a ground contact) on the circuit board 14 by the grounding leg 1341, and is soldered by surface adhesion technology (SMT). The electrical connection is formed such that the contact elastic piece 131 of the shielding case 13 can penetrate the terminal block 12 through the grounding elastic piece 132, and the positioning leg 134 forms a common ground circuit with the metal contact 141 of the circuit board 14.

The wire end connector 2 has an insulating body 21 and is in the insulating body 21 A plug portion 211 is disposed at the front side, and horizontal guide posts 2111 extend in the same direction on both sides of the plug portion 211, and then extend between the two guide posts 2111 horizontally through the insulative housing 21 and extend to the rear. The insertion space 210 is disposed, and the two guiding pillars 2111 are formed with a matching groove 2112 communicating with the insertion space 210 at the inner wall surface, and a horizontal buckle groove 2113 is formed at the outer side of the guiding pillar 2111, and the insulation is insulated. The plug portion 211 of the main body 21 is coupled with a circuit board 22 horizontally embedded in the insertion space 210 along the recess 2112 of the two guiding pillars 2111, and a plurality of first bottom sides of the front side of the circuit board 22 are provided. The contact point 221 (such as a signal contact or a ground contact, etc.), and the area on the other side of the circuit board 22 is provided with an area in the front projection direction to cover the ground layer 222 at the plurality of first contacts 221, and the ground layer 222 The electrical conductors disposed in the plurality of surface perforations are respectively connected to the first contact 221 (such as a ground contact), and the at least one side surface behind the circuit board 22 is provided with a preset cable (Fig. Not shown) a plurality of second contacts 223 (such as signal contacts or Ground point, etc.), and the bottom surface of circuit board 22 located at the second contact point 223 The conductive layer 224 is formed around the second conductive layer 224 and the conductive layer 224 is electrically connected to the first contact 221 to form an electrical conduction path.

In addition, the surface of the insulative housing 21 is vertically connected with a plurality of joints The hole 212 is recessed at the center of the bottom surface of the insulative housing 21, and the receiving groove 213 is connected to the receiving hole 212. The plurality of positioning posts 214 are disposed at two sides of the receiving groove 213, and corresponding to the surface of the circuit board 22 A plurality of through holes 225 are formed in the engaging holes 212, and the bottom of the insulating body 21 is coupled with the positioning member 23, and the positioning member 23 has a substrate 231 that abuts against the receiving groove 213, and the two sides of the substrate 231 are provided. The plurality of fixing posts 232 are integrated into the connecting holes 212 and the through holes 225; and the bottom surface of the circuit board 22 is coupled with a metal casing 24 covering the outside of the second contacts 223, and is in the metal casing 24 The periphery of the inner management space 240 is bent in the direction of the circuit board 22 and has a plurality of soldering legs 241 which can be connected to the conductive layer 224 by welding to form a common grounding loop, and the front side of the metal casing 24 extends outwardly. The plurality of fastening tabs 242 are integrated on the positioning post 214.

Please refer to the eighth, ninth and tenth drawings, which are the best for this creation. The side cross-sectional view before the docking, and the side cross-sectional views (1) and (2) after the docking, it can be clearly seen from the figure that when the creation is used, the line end connector 2 is first The guide post 2111 is inserted into the corresponding end of the insertion portion 111 of the insulative housing 11 and is inserted into the corresponding rail slot 1112 of the insulative housing 11 The structure of the mating space 130 formed by the 2111 mating rail slot 1112 and the shield housing 13 is designed such that the circuit board 22 of the line end connector 2 can be inserted into the docking space 130 of the shield housing 13 in a specific direction to prevent When the circuit board 22 is inserted in the reverse direction The introduction of the load current or the overcurrent to the signal terminal 12a of the terminal group 12 causes a short circuit or burnout of the internal components of the electronic device at the output end, and the terminal group 12 can be prevented from being deformed or deformed by the push of the unsuitable connector. The function of the reverse insertion is prevented, and the positioning buckle 133 of the side plate 133 is respectively fastened to the corresponding buckle groove 2113 of the plug portion 211 after the insertion portion 211 of the insulative housing 21 is inserted into the positioning. After the wire end connector 2 is inserted, it is less likely to cause a backward withdrawal or slippage.

When the line end connector 2 is connected to the board end connector 1, the line can be made. The plate 22 is inserted into the mating space 130 of the shield case 13 and is respectively pushed by the contact elastic piece 131 of the shield case 13 from the upper and lower surfaces of the circuit board 22 so that the contact end 1312 is used as a fulcrum with the elastic arm 1311 as a fulcrum. The elastic deformation, and the contact portion 122 of the terminal group 12 are elastically deformed toward the terminal slot 112, and after the circuit board 22 is inserted into the positioning, the contact portion 122 of the terminal group 12 can respectively abut against the bottom surface of the circuit board 22. An electrical connection is formed on the first contact 221, and the contact springs 131 of the shield case 13 respectively abut against the ground layer 222 on the surface of the circuit board 22 to form a common ground loop.

When the first plurality of contacts 221 of the circuit board 22 cooperate with the terminal group 12 When the terminal 12a transmits the high frequency signal, the electromagnetic wave interference (EMI) and the crosstalk interference formed between the terminals 12a may be inductively absorbed by the area of the ground layer 222 to cover the plurality of first contacts 221, or may be passed through the first The contact 221 (such as a ground contact) is directly guided to the ground layer 222, and the contact spring 131 of the shield case 13 is in contact with the surface of the ground layer 222 by the two elastic arms 1311, so that the elastic arm 131 is The direction of the insertion path of the shield case 13 extends, and the groove 1313 formed between the two elastic arms 1311 increases the resilient force of the elastic resistance, so that the contact elastic piece 131 is in contact with the ground layer 222 to generate The grounding terminal 12b of the terminal group 12 is respectively in contact with the first contact 221 (such as a grounding contact), and one or more grounding elastic pieces 132 of the shielding housing 13 are respectively used by the cantilever 1321. In contact with the grounding terminal 12b, the grounding portion 123 of the grounding terminal 12b and the positioning leg portion 134 of the shielding case 13 form a common grounding circuit with the circuit board 14, and the electrical contact between the two is greatly increased. By increasing the effect of forming a multi-point electrical contact, the path of electromagnetic waves and crosstalk interference on the shield case 13 can be effectively reduced, thereby improving the speed at which electromagnetic waves and crosstalk interference are transmitted to the circuit board 14 for ground release. It can ensure the integrity and stability of high-frequency signal transmission.

Furthermore, when the preset cable of the line end connector 2 is transmitted high via the circuit board 22 In the case of the frequency signal, the soldering leg 241 of the metal casing 24 and the conductive layer 224 of the circuit board 22 may form a common ground loop, or the metal casing 24 may be overlapped on the casing of the output electronic device to make the wire end The electromagnetic waves generated around the connector 2 can be inductively absorbed by the metal casing 24 and guided by the metal casing 24 to the conductive layer 224 of the circuit board 22 or the casing for ground release, thereby enhancing the grounding and shielding effects.

Please also refer to the figures in the eleventh, twelfth, thirteenth and fourteenth, respectively. A perspective view, an exploded perspective view, and a side cross-sectional view (1) and (2) of another preferred embodiment of the present invention are clearly seen from the figure, wherein the rear end of the insulating base 11 of the board end connector 1 The bottom surface of the two sides is formed with a stepped concave portion 114, and the concave portion 1141 is provided with a downwardly extending convex column 1141, and the positioning leg portion 134 of the shielding shell 13 is respectively formed with a vertical downward turn. The grounding leg 1341, and each of the soldering legs 1341 is formed with an inwardly bent horizontally extending piece 1342 adjacent to the positioning leg 134. Further, the front edge of the circuit board 14 is internally provided with a broken hole 140 and is broken. There are plural numbers at the rear and the two sides of the hole 140 respectively The metal contact 141 and the socket 142, and the circuit board 14 is located at the outer side of the metal contact 141, and is provided with a positioning hole 143. When the present invention is assembled, the insulating base 11 is firstly positioned on the circuit board. The inner side of the hole 140 is 14 and the concave portion 114 is abutted on the surface of the circuit board 14, and the protrusion 1141 is embedded downward in the positioning card hole 143, and the soldering portions 123 of the terminal group 12 are respectively positioned on the circuit board 14. At the corresponding metal contact 141 (such as a signal contact or a ground contact, etc.), the positioning leg 134 of the shield case 13 is passed down through the corresponding leg 142 of the circuit board 14 with the grounding leg 1341. And the extension piece 1342 is abutted on the surface of the circuit board 14 and then soldered to the circuit board 14 by surface adhesion technology (SMT) or through hole (Through Hole) welding, and forms a good electrical connection. status.

The board end connector 1 of the present invention is preferably implemented as a broken plate type positioning circuit The plate 14 is soldered to the corresponding metal contacts 141 and 142 of the circuit board 14 by surface bonding or via welding by using the soldering portion 123 of the terminal group 12 and the positioning leg portion 134 of the shielding case 13 . However, in actual application, the board end connector 1 can also be directly positioned on the surface of the circuit board 14, but the method of breaking the board can effectively save the space occupied by the inside of the electronic device, and the overall thinner.

Therefore, this creation is mainly for the front of the insulating base 11 of the board end connector 1. The terminal is provided with the terminal block 12 positioned on the abutting portion 111 and the abutting portion 111, and the top of the shielding case 13 coupled to the outside of the insulating base 11 is provided with one or more contact elastic pieces 131 extending into the docking space 130, and The bottom of the shielding case 13 is provided with one or more grounding elastic pieces 132 on the grounding terminal 12b corresponding to the corresponding terminal group 12, and the circuit board 22 coupled to the front connecting portion 211 of the insulative housing 21 of the wire end connector 2 is inserted into the shielding case. Pair of body 13 When the space 130 is connected to the space 130, the contact portions 122 of the terminal group 12 can respectively abut the corresponding first contact points 221 of the circuit board 22, and the contact springs 131 of the shielding case 13 respectively abut the ground layer of the circuit board 22. A common grounding circuit is formed on the 222, and the grounding elastic piece 132 respectively abuts the grounding terminal 12b to form a multi-point electrical contact effect, thereby effectively reducing the path of electromagnetic waves and crosstalk interference on the shielding case 13 to enhance the path. The electromagnetic wave and crosstalk interference are transmitted to the circuit board 14 for ground release speed, which ensures the integrity and stability of the high frequency signal transmission.

The above detailed description is intended to illustrate a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and other equivalents and modifications may be made without departing from the spirit of the invention. Changes are to be included in the scope of patents covered by this creation.

In summary, the above-mentioned wire-to-board connector is used to achieve its efficacy and purpose. Therefore, this creation is a practical and excellent creation, which is in line with the application requirements of the new patent, and is submitted according to law. I hope that the trial committee will grant this case as soon as possible to protect the hard work of the new creators. If there is any doubt in the bureau, please do not hesitate to give instructions. The new creators will try their best to cooperate with them.

1‧‧‧Board connector

11‧‧‧Insulated body

111‧‧‧Docking Department

1111‧‧‧floor

1112‧‧ ‧ rail slot

112‧‧‧Terminal slot

12‧‧‧Terminal group

122‧‧‧Contacts

13‧‧‧Shield housing

130‧‧‧ docking space

131‧‧‧Contact shrapnel

1311‧‧‧Bounce arm

1312‧‧‧Contact end

1313‧‧‧"

133‧‧‧ side panels

1331‧‧‧ Positioning buckle

134‧‧‧ positioning foot

1341‧‧‧ Grounding feet

14‧‧‧ boards

141‧‧‧Metal joints

2‧‧‧Wire end connector

21‧‧‧Insulated body

211‧‧‧ Sockets

2111‧‧‧ Guide pillar

2113‧‧‧ buckle groove

212‧‧‧Join hole

22‧‧‧PCB

222‧‧‧ Grounding layer

223‧‧‧second junction

23‧‧‧ Positioning members

232‧‧‧Fixed column

Claims (10)

A wire-to-board connector includes a board end connector and a line end connector, wherein: the board end connector has an insulating base body and is positioned on the mating portion at the front of the insulating base body to conform to the USB Type- The terminal group of the C basic specification, and the terminal group includes a plurality of signal terminals and at least four grounding terminals, and the contact portion of the terminal group is an internal docking space of the shielding shell combined with the outside of the insulating base body, and is composed of the terminal group The soldering portion is exposed outside the insulating base and soldered to the predetermined circuit board, and the top of the shielding case is provided with more than one contact elastic piece extending into the docking space, and the bottom of the shielding case is provided with more than one contact with the grounding terminal. The grounding elastic piece; the front end of the insulating body has a circuit board inserted in the docking space of the shielding shell, and is provided with a terminal group contact on one side surface of the circuit board. The portion is in contact with the plurality of first contacts on which the electrical connections are formed, and the other side surface of the circuit board is provided with a ground layer for contacting the elastic pieces to form a common ground circuit thereon. The wire-to-board connector of claim 1, wherein the abutting portion of the plate-end connector insulating base has a bottom plate, and a downwardly recessed track groove is formed at each of the two sides of the bottom plate, and The bottom plate is provided with a plurality of terminal slots for the terminal group contact portions to protrude into the docking space of the shielding shell, and the opposite ends of the mating portions of the wire end connector insulating bodies are embedded in the same direction and embedded in the track grooves. The guiding pillar has a space between the two guiding pillars for the circuit board to be embedded therein. The wire-to-board connector according to claim 2, wherein the bottom of the bottom plate of the insulating base body is provided with one or more through holes penetrating through the terminal slots, and the ground terminals of the terminal group have corresponding holes The fixed portion of the shield, and the grounding spring of the shield case has a forward direction The cantilever extending obliquely into the through hole, and the end of the cantilever is formed with an abutting end that abuts against the ground terminal fixing portion. The wire-to-board connector according to the second aspect of the invention, wherein the two sides of the shielding shell of the board end connector are formed with opposite side plates, and are respectively bent and extended toward the docking space in front of the side plates. Positioning the buckle, and the two guiding pillars of the insulative housing of the wire end connector are respectively disposed at the inner wall surface with a recessed groove for the circuit board to be horizontally embedded into the wearing space, and the outer side of the guiding pillar The buckle groove is formed by inserting the insertion portion into the docking space of the shielding shell to fasten the positioning buckle. The wire-to-board connector according to claim 1, wherein the contact elastic piece of the plate end connector shielding case is a suspended plurality of elastic arms extending obliquely downward toward the rear, and is formed at the end of the elastic arm. A curved contact end is formed, and a groove is formed between the two adjacent elastic arms from the rear to the front. The wire-to-board connector of claim 1, wherein the two sides of the shielding shell of the board end connector are formed with opposite side plates, and at least one positioning leg is disposed at a bottom edge of the side plate. And a horizontal grounding leg that is outwardly turned is formed on each positioning leg. The wire-to-board connector according to the first aspect of the invention, wherein the bottom surface of the rear side of the insulating seat of the board end connector is a protrusion formed with a concave portion and a concave portion extending downward, and is disposed on the shielding shell. An opposite side plate is formed at two sides of the body, and at least one positioning leg is disposed at a bottom edge of the side plate, and a vertical grounding leg that is turned downward is formed on the positioning leg, and the welding leg is formed adjacent to the positioning leg. There are horizontal extensions that are bent inward. The wire-to-board connector of claim 1, wherein the wire end connector is located on at least one side of the rear of the circuit board and is provided with a plurality of second wires for connecting the preset cables. a conductive layer is formed around the second contact, and a metal cover covering the outside of the second contact is coupled to the circuit board, and the periphery of the metal case is bent toward the circuit board to be connected to the conductive A plurality of soldered feet on the layer. The wire-to-board connector of claim 8, wherein the bottom end of the insulative body of the wire end connector is provided with a plurality of positioning posts, and extends outwardly on the front side of the metal casing and is sleeved on the positioning post. The plurality of fastening tabs. The wire-to-board connector according to claim 1, wherein the insulative body surface of the wire end connector is vertically provided with a plurality of engaging holes, and the bottom surface of the insulating body is concavely connected to the engaging hole. A plurality of through holes are formed in the circuit board corresponding to the engaging holes, and the bottom of the insulating body is coupled with the positioning member, and the positioning member has a substrate abutting in the receiving groove, and the two sides of the substrate are disposed There are a plurality of fixing posts that are inserted into the joint hole and the through hole to be integrated.