CN101494324A - Ground terminal - Google Patents

Abstract

The invention relates to a grounding terminal, which is arranged on a circuit board, wherein the circuit board is provided with a through hole, and the grounding terminal at least comprises: a body; and a tail structure connected to the body and extending to form a plug part, wherein the plug part is arranged corresponding to the through hole of the circuit board and is provided with a buckling part which is abutted against a bottom surface of the circuit board when the plug part is arranged in the through hole of the circuit board so as to be matched with the body to ensure that the grounding terminal is arranged on the circuit board. The grounding terminal can avoid the tilting of the tail structure during welding, and can not cause the left and right deviation of the grounding terminal or the breakage of the grounding terminal and the circuit board due to the force application during the installation of the locking element during the installation of the grounding terminal, thereby solving the problem that the circuit board and the grounding terminal are easy to break when the locking element is locked on the conventional grounding terminal.

Description

Ground terminal

technical field

The invention relates to a ground terminal, in particular to a ground terminal arranged on a circuit board.

Background technique

Generally, when assembling an electronic product, the grounding terminal of the circuit board is used to connect the grounding line of the circuit board to the metal frame of the electronic product to perform grounding discharge. A conventional ground terminal for connecting a circuit board and a metal frame is shown in FIG. 1 . The ground terminal 2 has a connection portion 2a, conductive portions 2b, 2c and 2d, and the connection portion 2a has a through hole 2e.

The traditional method of installing the ground terminal 2 on the circuit board 1 is to insert the conductive parts 2b, 2c, and 2d of the ground terminal 2 into the corresponding holes 1a of the circuit board 1, and connect the ground terminal 2 and the circuit board 1 by soldering. connected to the ground line (not shown). Then, the connecting portion 2a of the ground terminal 2 is bent towards the upper surface 1c of the circuit board 1, so that the connecting portion 2a is flatly contacted with the upper surface 1c of the circuit board 1, and the through hole 2e is corresponding to the upper surface 1c of the circuit board 1. Through hole 1b.

The schematic diagram of the installation of the ground terminal 2 on the circuit board 1 is shown in FIG. When it is flatly attached to the upper surface 1c of the circuit board 1, and the through hole 2e corresponds to the through hole 1b of the circuit board 1, then the screw 11 is inserted into the through hole 2e of the ground terminal 2 and the through hole 1b of the circuit board 1 in sequence, so that The screw 11 penetrates through the ground terminal 2 and the circuit board 1 , and then is correspondingly locked to the screw hole 10 a on the metal frame 10 , so that the ground terminal 2 and the circuit board 1 are fixed on the metal frame 10 together.

In addition to locking the ground terminal 2 and the circuit board 1 to the metal frame 10 together with the screw 11, the ground terminal 2, the ground circuit of the circuit board 1, and the metal frame 10 can also be electrically connected through the screw 11 for the circuit board. 1 Conduct a ground discharge.

However, when the existing ground terminal 2 is inserted on the circuit board 1 and undergoes a soldering process through a tin furnace, it is easy to produce a warping situation at the conductive parts 2b, 2c, 2d, thus making the ground terminal 2 conductive The portions 2b, 2c, and 2d cannot be electrically connected to the ground line on the lower surface 1d of the circuit board 1 .

Furthermore, since there is no positioning structure between the through hole 2e of the connecting portion 2a and the through hole 1b of the circuit board 1, when the screw 11 passes through the through hole 2e and the through hole 1b, it is easy to turn the screw 11 due to improper force. As a result, the ground terminal 2 deviates left and right on the circuit board 1 , which causes troubles in installation. In addition, when the ground terminal 2 is inserted on the circuit board 1 for soldering, since the through hole 2e is not engaged with the through hole 1b, the through hole 2e of the ground terminal 2 may be out of alignment after the soldering process is completed. The screw 11 cannot penetrate through the through hole 2e and the through hole 1b, thus resulting in the problem that the screw 11 cannot be locked.

In addition, since the distance between the connection portion 2a of the ground terminal 2 and the conductive portions 2b, 2c, 2d is relatively close, the distance between the through hole 1b and the hole 1a of the circuit board 1 is also quite close, so when the ground terminal 2 And when the circuit board 1 is locked on the metal frame 10 by the screw 11, it is easy to cause the edge area of the circuit board 1 to break and/or be grounded along the fracture line A shown in the figure due to the excessive force applied by the screw 11. The conductive parts 2b, 2c, 2d of the terminal 2 are broken, which will cause damage to the circuit board 1 and/or the ground terminal 2 and is not conducive to assembly.

Therefore, how to develop a ground terminal that can improve the defects of the prior art is an urgent research and development topic.

Contents of the invention

The main purpose of the present invention is to provide a grounding terminal to solve the problem that the existing grounding terminal is easy to warp when it is installed on the circuit board and passes through the tin furnace, which easily causes the grounding terminal to shift and easily causes the circuit board and/or the grounding terminal to produce Fracture situation.

Another object of the present invention is to provide a ground terminal that can be stably and conveniently mounted on a circuit board.

To achieve the above purpose, a broad implementation form of the present invention is to provide a ground terminal disposed on a circuit board, wherein the circuit board has a through hole. The grounding terminal at least includes: a body; and a tail structure, which is connected to the body and extends to form an insertion part, which is arranged corresponding to the through hole of the circuit board and has a buckle part, which is connected to the insertion part The through hole arranged on the circuit board abuts against a bottom surface of the circuit board to cooperate with the body so that the grounding terminal is arranged on the circuit board.

The beneficial technical effect of the present invention is that the ground terminal can avoid the situation that its tail structure is lifted during welding, and when the ground terminal is installed, the ground terminal will not be biased left and right due to the force applied when the locking element is installed. Therefore, it can solve the problem that the circuit board and the grounding terminal are easily broken when the existing grounding terminal is locked on the locking element.

Description of drawings

Figure 1: It is a schematic structural diagram of an existing grounding terminal.

FIG. 2 : It is a schematic diagram of an existing ground terminal installed on a circuit board.

FIG. 3A : It is a top view of the structure of the ground terminal according to the first preferred embodiment of the present invention.

Fig. 3B: It is a side view of the structure of the ground terminal in the first preferred embodiment of the present invention.

FIG. 4A : It is a structural schematic view of the ground terminal installed on the circuit board according to the first preferred embodiment of the present invention.

FIG. 4B : It is a schematic cross-sectional structure diagram of the ground terminal shown in FIG. 4A .

FIG. 5A is a side view of the structure of the ground terminal in the second preferred embodiment of the present invention.

FIG. 5B : It is a side view of the structure of the circuit board corresponding to the ground terminal of the second preferred embodiment of the present invention.

FIG. 5C : It is a structural schematic view of the ground terminal shown in FIG. 5A installed on the circuit board.

Fig. 6A: It is a side view of the structure of the ground terminal of the third preferred embodiment of the present invention.

FIG. 6B : It is a schematic structural diagram of the plugging portion shown in FIG. 6A .

FIG. 6C : It is a schematic cross-sectional structure diagram of the ground terminal shown in FIG. 6A .

FIG. 6D : It is a structural schematic view of the ground terminal shown in FIG. 6A installed on the circuit board.

Wherein, the reference signs are explained as follows:

Ground terminal: 2, 3, 6, 8 Circuit board: 1, 4, 7

Screws: 11 Metal frame: 10

Connecting part: 2a Leading part: 2b, 2c, 2d

Through hole: 1b, 2e, 42 Hole: 1a

Through hole: 41, 71 Upper surface: 1c

Bottom surface: 1d Screw hole: 10a

Body: 31, 61, 81 Tail structure: 32, 62, 82

Opening: 33, 63, 83 Fitting part: 33a

Clamping member: 63a, 83a Insertion part: 34, 64, 84

Side panel: 34a Bottom: 43, 73

Locking element: 5 Surface: 64b, 84e

Fastening parts: 34b, 64a, 84a, 84b Hollow recessed parts: 64c, 72a, 84c, 84d

Detailed ways

Some typical embodiments embodying the features and advantages of the present invention will be described in detail in the description in the following paragraphs. It should be understood that the present invention is capable of various changes in different forms without departing from the scope of the present invention, and that the description and drawings thereof are illustrative in nature and not limiting of the present invention.

Please refer to FIG. 3A and FIG. 3B , which are respectively a top view and a side view of the structure of the ground terminal according to the first preferred embodiment of the present invention. As shown in the figure, the grounding terminal 3 of the present invention is mainly composed of a body 31 and a tail structure 32 , wherein the tail structure 32 is connected to the body 31 and extends to form at least one insertion portion 34 . The socket part 34 is connected to the ground circuit of the circuit board (not shown in the figure) and has at least one buckle part 34b. The hole 41 abuts against the bottom surface 43 of the circuit board 4 to cooperate with the body 31 disposed on the top surface of the circuit board 4 so that the ground terminal 3 is disposed on the circuit board 4 .

In this embodiment, the ground terminal 3 can be made of conductive material, such as metal. The body 31 may have, for example, a circular arc profile portion, and its overall shape and profile are not limited. In some embodiments, the width of the body 31 is greater than that of the tail structure 32 , and the width of the body 31 tapers toward the direction of the tail structure 32 , and the tail structure 32 and the body 31 may also be integrally formed. In addition, the central area of the body 31 has an opening 33 , which is circular, and at least part of its periphery extends downward to form a fitting portion 33 a , wherein the fitting portion 33 a and the body 31 can be integrally formed.

In addition, the end of the tail structure 32 extends downward in a bent manner to form an inserting portion 34, and the inserting portion 34 has two correspondingly arranged side plates 34a and at least one fastening component 34b, wherein the fastening component 34b can be But it is not limited to a hook, and it is located on the side of the insertion part 34 relative to the body 31, and its free end extends towards the bottom surface of the body 31 or the tail structure 32, and forms a gap with the body 31 or the tail structure 32 .

Please refer to FIG. 4A and FIG. 4B , which are respectively a structural schematic diagram and a cross-sectional structural schematic diagram of the ground terminal shown in FIG. 3A and FIG. 3B installed on the circuit board. As shown in the figure, the circuit board 4 can be a printed circuit board, and the circuit board 4 has at least one through hole 41 and at least one through hole 42 .

When the ground terminal 3 is to be installed on the circuit board 4, the body 31 of the ground terminal 3 is arranged on the top surface of the circuit board 4, and the insertion portion 34 of the ground terminal 3 is correspondingly inserted into the through hole 41 of the circuit board 4. . Since the buckling part 34b of the insertion part 34 has elasticity, when the insertion part 34 is inserted into the through hole 41 of the circuit board 4, the buckle part 34b can enter the through hole 41 according to its downward force, And when the fastening part 34b of the insertion part 34 passes through the through hole 41, the fastening part 34b can restore its hook state by elastic force and abut against the bottom surface 43 of the circuit board 4, so as to make the ground terminal 3 and the circuit board 4 Engage and connect with the ground circuit of the circuit board 4 (not shown in the figure). In addition, the two side plates 34 a of the inserting portion 34 can just abut against two opposite walls of the through hole 41 , so that the inserting portion 34 can stably pass through the through hole 41 . In this way, the circuit board 4 equipped with the grounding terminal 3 is soldered in a tin furnace by utilizing the engagement between the fastening part 34b of the socket part 34 and the two side plates 34a and the through hole 41 of the circuit board 4 During operation, the tail structure 32 of the ground terminal 3 will not be lifted up, and the plug portion 34 can be firmly connected to the ground circuit of the circuit board 4 .

In addition, the opening 33 of the main body 31 of the grounding terminal 3 corresponds to the through hole 42 of the circuit board 4 , and the fitting portion 33a extending downward around the opening 33 is embedded in the through hole 42 and engages with the inner wall of the through hole 42. , so that a locking element 5, such as a screw, can be used to pass through to lock the ground terminal 3 and the circuit board 4 together on a metal frame (not shown). Since the fitting portion 33a of the grounding terminal 3 is closely engaged with the through hole 42 of the circuit board 4, when the locking element 5 is passed through, the grounding terminal 3 will not be shifted left and right due to the stress caused by the rotation of the locking element 5 The phenomenon. In addition, when the ground terminal 3 is installed on the circuit board 4 and soldered through a tin furnace, the opening 33 of the ground terminal 3 can be tightly engaged with the through hole 42 of the circuit board 4 due to the tight engagement between the fitting part 33a, and no The left and right deviation allows the locking element 5 to pass through the opening 33 of the ground terminal 3 and the through hole 42 of the circuit board 4 smoothly.

Please refer to FIG. 5A , which is a side view of the structure of the ground terminal according to the second preferred embodiment of the present invention. As shown in the figure, the grounding terminal 6 is mainly composed of a body 61 and a tail structure 62 , wherein the shape, material and connection method of the body 61 and the tail structure 62 are the same as those of the foregoing embodiments, so details will not be repeated here. Moreover, the central area of the body 61 has an opening 63, and at least part of the periphery of the opening 63 extends downward to form a fitting portion, but in this embodiment, the fitting portion is two symmetrically arranged engaging members 63a, and the engaging portion The member 63a can be, but not limited to, a structure in which the periphery of the opening 63 of the body 61 is bent downwards, that is, the engaging member 63a is a structure integrally formed with the body 61, and is used for connecting with the circuit board 7 (as shown in FIG. 5B ). The corresponding hollow recesses 72 a disposed on both sides of the through hole 72 engage with each other, so that the opening 63 of the ground terminal 6 can be disposed corresponding to the through hole 72 of the circuit board 7 .

In addition, in this embodiment, the end of the tail structure 62 is also bent downwards and extended to form the inserting portion 64, and part of the surface 64b of the inserting portion 64 is hollowly bent toward the main body 61 to form the fastening part 64a. And there is a hollow recess 64c relative to the part of the surface that forms the fastening part 64a, and there is an angle between the fastening part 64a and the hollow recess 64c, so the fastening part 64a can be but not limited to be connected to the insertion part 64 An integrally formed one-sided hook structure, and the fastening part 64a protrudes from the side of the insertion part 64 relative to the body 61, and its free end extends toward the bottom surface of the body 61 or the tail structure 62, and is connected to the body 61 or the tail structure 62 forms a gap, which is used to abut against the bottom surface 73 of the circuit board 7 (as shown in FIG. The body 61 on the top surface cooperates so that the ground terminal 6 is disposed on the circuit board 7 .

Please refer to FIG. 5B, which is a schematic structural diagram of a circuit board. As shown in the figure, the circuit board 7 can be a printed circuit board, and the circuit board 7 has at least one through hole 71 and at least one through hole 72, wherein the part of the through hole 72 There are two hollow recesses 72a arranged symmetrically around the periphery, for passing through the engaging member 63 corresponding to the ground terminal 6 .

Please refer to FIG. 5C , which is a schematic cross-sectional structural view of the ground terminal shown in FIG. 5A installed on the circuit board. When the ground terminal 6 is disposed on the circuit board 7 , the body 61 of the ground terminal 6 is disposed on the top surface of the circuit board 7 , and the insertion portion 64 of the ground terminal 6 is correspondingly inserted into the through hole 71 of the circuit board 7 . Since the fastening part 64a of the socket part 64 is formed by hollowing out the surface 64b of the socket part 64, when the socket part 64 is inserted into the through hole 71 of the circuit board 7, the fastening part 64a can follow it downward. The applied force and the force given by the wall of the through hole 71 are accommodated in the hollowed out recess 64c and enter the through hole 71. After passing through the through hole 71, the fastening part 64a will be The given active force disappears, and a reaction force is generated, which pops up from the hollowed out recess 64c again, and abuts against the bottom surface 73 of the circuit board 7, so that the plug-in portion 64 can be firmly engaged with the circuit board 7, and The grounding line of the circuit board 7 is connected (not shown). In this way, the fastening part 64a of the plug-in portion 64 is utilized, so that the circuit board 7 equipped with the ground terminal 6 will not be warped when the soldering operation is carried out through the tin furnace, and the plug-in portion 64 and the circuit can be connected. The ground line of plate 7 is firmly connected.

In addition, when the opening 63 of the body 61 of the grounding terminal 6 is arranged corresponding to the through hole 72 of the circuit board 7, the two corresponding downwardly extending engaging members 63a on the edge of the opening 63 can be correspondingly embedded in the two sides of the through hole 72. The hollowed out recesses 72a are engaged with each other. At this time, the locking elements 5, such as screws, are passed through to lock the ground terminals 6 and the circuit board 7 together on a metal frame (not shown). Since the engaging member 63a of the grounding terminal 6 is closely engaged with the hollow recess 72a of the through hole 72 of the circuit board 7, when the locking element 5 is passed through, the grounding terminal 6 will not be damaged by the stress caused by the rotation of the locking element 5. There is a phenomenon of left and right deviation. In addition, when the ground terminal 6 is installed on the circuit board 7 and soldered through a tin furnace, the opening 63 of the ground terminal 6 can be tightly engaged between the engaging member 63a and the through hole 72 of the circuit board 7, so that no The left and right deviations allow the locking element 5 to pass through the opening 63 of the ground terminal 6 and the through hole 72 of the circuit board 7 smoothly.

Please refer to Fig. 6A, Fig. 6B, and Fig. 6C at the same time, which are respectively the structural side view of the grounding terminal of the third preferred embodiment of the present invention, the schematic structural diagram of the insertion part shown in Fig. 6A and the grounding terminal shown in Fig. 6A Schematic diagram of the cross-sectional structure. As shown in the figure, the grounding terminal 8 of the present invention is mainly composed of a body 81 and a tail structure 82, wherein the structure, shape, material and connection method of the body 81 and the tail structure 82 are the same as those of the foregoing embodiments, and thus will not be repeated here. . However, in this embodiment, part of the surfaces 84e on both sides of the insertion portion 84 extending downwards at the end of the tail structure 82 are bent in two opposite directions to form two fastening components extending in opposite directions. 84a, 84b, and relative to the partial surface 84e forming two fastening parts 84a, 84b, there are two hollow recesses 84c, 84d (as shown in Figure 6B), wherein, the fastening parts 84a, 84b and the two hollow recesses There is an angle between 84c and 84d, and the free end of the fastening part 84a extends toward the bottom surface of the body 81 or the tail structure 82, and forms a gap with the main body 81 or the tail structure 82, while the free end of the fastening part 84b Then it extends in the direction opposite to the free end of the fastening part 84a, so as to jointly form an insertion part 84 with a double-sided hook structure. When it is set through the through hole 71 of the circuit board 7, it can respectively abut against the two opposite sides of the bottom surface 73 of the circuit board 7, so that the buckle between the plug-in part 84 and the circuit board 7 is more stable, and it can also be connected with the circuit board 7 at the same time. The grounding line (not shown) of the board 7 is more firmly connected.

Please refer to FIG. 6D , which is a schematic cross-sectional structure diagram of the ground terminal shown in FIG. 6A installed on the circuit board. When the ground terminal 8 is disposed on the circuit board 7 , the body 81 of the ground terminal 8 is disposed on the top surface of the circuit board 7 , and the insertion portion 84 of the ground terminal 8 is correspondingly inserted into the through hole 71 of the circuit board 7 . Since the fastening parts 84a, 84b of the plug-in part 84 are formed by hollowing out the surface 84e of the plug-in part 84, when the plug-in part 84 is inserted into the through hole 71 of the circuit board 7, the fastening parts 84a, 84b can be Complying with its downward force and the force given by the wall of the through hole 71, they are respectively accommodated in the hollow recesses 84c, 84d, and enter into the through hole 71. After passing through the through hole 71, the two fastening parts 84a , 84b will pop out from the hollow recesses 84c, 84d in the opposite direction again due to the reaction force, and respectively abut against the two opposite sides of the bottom surface 73 of the circuit board 7, so that the insertion part 84 can be stably inserted into the It penetrates through the hole 71 and is connected to the ground circuit of the circuit board 7 (not shown). By using the tight engagement between the two buckling parts 84a extending in opposite directions of the socket part 84 and the bottom surface 73 of the circuit board 7, the circuit board 7 equipped with the grounding terminal 8 is soldered after passing through the tin furnace. At this time, no warping will occur, and the plug-in portion 84 can be firmly connected to the ground circuit of the circuit board 7 .

As for this embodiment, the structure and method of positioning and engaging the engaging members 83a extending downward from the two opposite sides of the opening 83 of the main body 81 and the hollowed-out recesses 72a of the through holes 72 of the circuit board 7 are the same as those of the aforementioned embodiments. The examples are similar, so they will not be repeated here.

To sum up, the body of the grounding terminal of the present invention has a fitting portion, and the tail structure is extended to form an insertion portion. close together, so that the tail structure of the ground terminal can be firmly arranged on the circuit board, so as to prevent the tail structure from being lifted during soldering. In addition, since the body of the grounding terminal is an extended structure and the grounding terminal can be embedded in the through hole of the circuit board through the fitting part of the body, when the grounding terminal is installed, it will not be damaged by the force applied when the locking element is installed. The grounding terminal is shifted left and right, or the grounding terminal and the circuit board are broken, so it can solve the situation that the existing grounding terminal is easy to cause the circuit board and the grounding terminal to break when the locking element is locked.

The present invention can be thought and modified arbitrarily by those skilled in the art without departing from the scope defined by the appended claims.

Claims (11)

1. an earth terminal is arranged on the circuit board, and wherein this circuit board has a perforated holes, and this earth terminal comprises at least:

One body; And

One tail structure, be connected in this body, and extend to form a Plug Division, the corresponding setting of this perforated holes of this Plug Division and this circuit board and have a fastener features, when being arranged at this perforated holes of this circuit board in this Plug Division, this fastener features replaces a bottom surface of this circuit board, to match with this body and this earth terminal is arranged on this circuit board.

2. earth terminal as claimed in claim 1, wherein this circuit board is a printed circuit board (PCB).

3. earth terminal as claimed in claim 1, wherein the width of this body is greater than the width of this tail structure, and the width of this body is with the direction convergent towards tail structure.

4. earth terminal as claimed in claim 1, wherein this fastener features is an one-sided coupler construction.

5. earth terminal as claimed in claim 1, wherein this fastener features is a bilateral coupler construction.

6. earth terminal as claimed in claim 1, wherein this Plug Division is extended downwards by the terminal of this tail structure.

7. earth terminal as claimed in claim 1, wherein this body is arranged at an end face of this circuit board, and has an opening, and this opening is used for a lock member to wear corresponding to a through hole of this circuit board, and this lock member is a screw.

8. earth terminal as claimed in claim 7, wherein this body also has a fitting portion, this fitting portion extends downwards from the periphery to small part of this opening of this body, and in this through hole that is embedded at this circuit board, and this fitting portion and this body are one of the forming.

9. earth terminal as claimed in claim 8, wherein this fitting portion is the fastened component that extends downwards from these open circumferential two opposite sides, in order to engage mutually with the hollow out recess of the two opposite sides of this through hole of this circuit board.

10. earth terminal as claimed in claim 1, wherein this body and this tail structure are one of the forming.

11. earth terminal as claimed in claim 1, wherein this Plug Division also has at least one side plate, and described side plate is in order to the inwall of this perforated holes of being resisted against this circuit board.

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