TWI612740B - Filter connector and its filter board - Google Patents

Abstract

The invention is a filter connector and a filter circuit board. The filter connector is disposed on a casing and has a connection port and a filter circuit board. One end of the connecting jaw passes through one of the perforations of the housing and is fixed to the housing, and protrudes from an electrode piece, and the electrode piece is electrically insulated from the housing. The filter circuit board has a circuit board body, a plurality of grounding springs and a plurality of filter capacitors. The circuit board body has a through hole for the electrode piece to be pierced, and the grounding spring piece is disposed on the surface of the circuit board body and is in electrical contact with the housing, and the filter capacitors are electrically connected. Between the electrode sheet and the grounding shrapnel. Since the filter circuit board is not disposed in the connection port, the connection port does not need to be replaced, and the filter circuit board can be added to achieve the function of filtering the high frequency signal, and the burden on the user can be reduced.

Description

Filter connector and its filter board

The invention is a connector, in particular a filter connector and a filter circuit board thereof.

In today's electronic product design, anti-electromagnetic interference is an important part. Because of the electromagnetic waves generated during the use of electrical equipment and electronic equipment, it affects the operational efficiency of other equipment. Therefore, how to reduce electromagnetic interference is an important issue in the design of electronic products today.

Since the electronic products for vehicles are used in a small space of a vehicle, and excessive electronic equipment is used in a vehicle, electromagnetic waves are likely to interfere with each other. In addition, with the development of automotive technology, oil-electric hybrid vehicles, electric vehicles, etc., are now being introduced to drive vehicles through electric vehicles. Power supplies for hybrid electric vehicles and electric vehicles are also required to provide electricity to electric vehicles. Other electronic devices in the vehicle, such as navigation, radio, audio and other equipment. The power supply is connected to other electronic devices through its connector to provide power, but when the power is supplied, the connector interface emits electromagnetic waves generated by the power source, thereby causing electromagnetic interference to other electronic devices and affecting the operation of other electronic devices.

The prior art method for reducing the electromagnetic interference of the power supply is usually to provide a filter circuit board on the connector to filter out the high frequency signal outputted by the power source, thereby reducing the generation of electromagnetic waves to suppress electromagnetic wave interference of various automotive electronic products. However, the existing filter circuit board is directly disposed in the connector of the connector, so the connection port of the entire connector must be replaced, the original connection port can no longer be used, and the entire group of new connectors is purchased for the user. It is bound to create an additional burden. In addition, only the high-frequency signal outputted by the filter circuit board is filtered out, and the power source still generates electromagnetic waves, which will still be produced by other electronic devices. Electromagnetic interference, so the prior art needs to be further improved by setting a filter circuit board to filter out the high-frequency signal output from the power supply to reduce the electromagnetic interference.

In view of the fact that the existing filter circuit board is directly disposed in the connector, it is necessary to purchase a whole set of new connector replacement to cause an additional burden. The present invention provides a filter connector and a filter circuit board thereof, the filter connector is disposed on a housing includes: a connecting port, and one end of the connecting ring is threaded out and fixed in one of the through holes of the housing, and the connecting bar protrudes out of the one end of the through hole a filter circuit board comprising: a circuit board body having a through hole for communicating one of the first surface and a second surface; wherein the second surface of the circuit board body faces the housing; The perforation on the main body of the circuit board is passed through the electrode piece on the connecting port; the plurality of grounding elastic pieces are disposed on the second surface of the circuit board body for electrical contact with the housing; and the plurality of filter capacitors are set On the first surface of the circuit board body, one end of each filter capacitor is electrically connected to the electrode pads of the connection port, and the other end is respectively connected to the grounding spring pieces.

The filter circuit board of the filter connector includes: a circuit board body having a through hole for connecting the opposite first surface and a second surface; and a plurality of grounding spring pieces disposed on the second surface of the circuit board body And at least one electrically connected elastic piece is disposed on the first surface of the circuit board body and located at the periphery of the through hole; and a plurality of filter capacitors are disposed on the first surface of the circuit board body, and one of the filter capacitors is respectively electrically connected It is connected to the at least one electrical connection elastic piece, and the other end is electrically connected to the grounding elastic pieces, respectively.

The filter connector of the present invention is provided separately from the filter circuit board, and the filter circuit board is in electrical contact with the housing directly through the grounding spring to provide a ground path. Since the filter circuit board is not disposed in the connection port, the connection port does not need to be replaced, and the filter circuit board can be added to achieve the function of filtering high frequency signals, and the burden on the user can be reduced.

The filter circuit board is further provided with a metal shielding layer capable of shielding electromagnetic waves and reducing electromagnetic waves exposed by the connection. Therefore, it is difficult for the electromagnetic wave generated by the power source to be exposed through the connector to interfere with other electronic devices, further reducing the occurrence of electromagnetic interference.

10‧‧‧Filter connector

11‧‧‧Links

111‧‧‧electrode

112‧‧‧First locking hole

113‧‧‧ annular flange

12‧‧‧Filter Board

121‧‧‧Board body

1210‧‧‧Perforation

1211‧‧‧ first surface

1212‧‧‧ second surface

1213‧‧‧ gap

122‧‧‧ Grounding shrapnel

123‧‧‧Filter capacitor

124‧‧‧Electrical connection shrapnel

125‧‧‧Metal fasteners

13‧‧‧ screws

14‧‧‧Electrical connection fixing piece

141‧‧‧Second locking hole

15‧‧‧Electrical connection piece

151‧‧‧ Third locking hole

20‧‧‧shell

21‧‧‧through hole

30‧‧‧Internal circuits

1 is a perspective view of a embodiment of the present invention disposed on a housing.

2 is an exploded perspective view of an embodiment of the present invention.

3 is a perspective view showing another perspective of a filter circuit board according to an embodiment of the present invention.

4 is a side cross-sectional view showing an embodiment of the present invention.

FIG. 5 is a schematic block diagram of a circuit according to an embodiment of the present invention.

Figure 6 is a cross-sectional view showing the screw locking portion of the embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view showing a contact portion of an electrode sheet according to an embodiment of the present invention.

Figure 8 is a perspective view of another embodiment of the present invention.

Fig. 9 is a schematic cross-sectional view showing a contact portion of an electrode sheet according to still another embodiment of the present invention.

The technical means adopted by the present invention for achieving the intended purpose are further explained below in conjunction with the drawings and preferred embodiments of the present invention.

Referring to FIG. 1 to FIG. 3, the present invention is a filter connector 10 for mounting on a housing 20. The filter connector 10 includes a connector 11 and a filter circuit board 12.

One end of the connecting rod 11 is threaded out and fixed in one of the through holes of the housing 20, and the connecting rod 11 protrudes out of the through hole of the housing 20 to protrude from an electrode sheet 111.

The filter circuit board 12 includes a circuit board body 121, a plurality of grounding springs 122, and a plurality of filter capacitors 123. The circuit board body 121 has a through hole 1210 for communicating with one of the first surface 1211 and the second surface 1212 , and the second surface 1212 of the circuit board body 121 faces the housing 10 .

The grounding springs 122 are disposed on the second surface 1212 of the circuit board body 121 and are in electrical contact with the housing 20 . The electrode sheet 111 of the connecting port 11 is inserted through the through hole 1210 of the circuit board body 121, and the electrode piece 111 of the connecting port 11 is electrically insulated from the grounding elastic piece 122 and the housing 20.

The filter capacitors 123 are disposed on the first surface 1211 of the circuit board body 121, and one end of each of the filter capacitors 123 is electrically connected to the electrode pads 111 of the connection port 11, and the other ends are electrically connected to the grounding springs 122, respectively. .

As shown in FIG. 4 , the grounding elastic pieces 122 are disposed on the second surface 1212 of the circuit board body 121 and abut against the housing 20 to make electrical contact with the housing 20 . The filter capacitors 123 are electrically connected to the housing 20 through the grounding elastic piece 122.

Since the grounding springs 122 are formed on the second surface 1212 of the circuit board body 121 and face the housing 20, when the connecting jaws 11 pass through the through holes 21 of the housing 20, the grounding elastic pieces 122 are resisted. By the housing 20, the grounding elastic pieces 122 are deformed by being pressed to press against the housing 20. Thereby, the grounding elastic pieces 122 electrically contact the housing 20.

Referring to FIG. 5, the electrical connection relationship of the filter connector 10 is illustrated in a simplified circuit diagram. Since at least one circuit (not shown) is formed on the circuit board body 121, the filter capacitors 123 are transmitted through the circuit capacitor body 121. A line on the board body 121 is bridged between the electrode sheet 111 and the housing 20.

The filter connector 10 is provided separately from the filter circuit board 12, and the filter circuit board 12 is directly in electrical contact with the housing 20 through the grounding springs 122 to provide a ground path. The filter capacitors 123 are connected between the electrode pads 111 of the connection port 11 and the grounding springs 122. In this way, the electrode pads 111 of the connection port 11 can be grounded through the filter capacitors 123, and the high-frequency noise is removed through the ground path to reduce the generation of electromagnetic waves to suppress the influence of electromagnetic interference. Therefore, the filter circuit board 12 is only required to be installed, and the electrode pad 111 of the connection port 11 is inserted into the through hole 1210 of the circuit board body 121 of the filter circuit board 12 in cooperation with the original port 11 . The installation is completed without the need to replace the connector as a whole to reduce the burden on the user.

In addition, the filter circuit board 12 is further provided with a metal shielding layer (not shown) in the circuit board body 121, and the metal shielding layer can shield electromagnetic waves. Therefore, the electromagnetic waves generated by the internal circuit can be shielded by the metal shielding layer, reducing the exposed electromagnetic waves and further reducing electromagnetic interference.

In this embodiment, the through hole 1210 of the circuit board body 121 is disposed in the electrode plate 111 of the connecting port 11 so that the outer edge of the electrode pad 111 of the connecting port 11 abuts against the circuit board body 121. Perforation 1210 inner edge. Therefore, there is no gap between the electrode tab 111 of the connection port 11 and the through hole 1210 of the circuit board body 121. The metal shielding layer is disposed in the circuit board body 121. In this way, the electromagnetic wave generated by the internal circuit can be completely shielded by the metal shielding layer in the circuit board body 121 to further prevent electromagnetic waves generated by the internal circuit from passing through the electrode pad 111 of the connection port 11 and the circuit board body 121. The gap between the perforations is exposed to reduce electromagnetic interference.

Further, as shown in FIG. 2 and FIG. 6 , the filter connector 10 further includes a screw 13 , an electrical connection fixing piece 14 and an electrical connection piece 15 .

A first locking hole 112 is formed in the electrode sheet 111 of the connecting port 11. One end of the electrical connection fixing piece 14 is fixedly and electrically connected to the circuit board body 121 , and the other end is formed with a second locking hole 141 , and the second locking hole 141 is aligned with the first locking hole 112 . In the embodiment, the electrical connection fixing piece 14 is soldered to the circuit board body 121 to be fixedly and electrically connected to the circuit board body 121.

One end of the electrical connecting piece 15 is formed with a third locking hole 151, and the other end is fixedly and electrically connected to an internal circuit board 30, and the third locking hole 151 is aligned with the second locking hole 141. The electrical connecting piece 15 is formed with one end of the third locking hole 151 disposed between the electrode piece 111 of the connecting port 11 and one end of the second connecting hole 141 formed by the electrical connecting piece 14 .

The screw 13 is locked into the first locking hole 112, the second locking hole 141 and the third locking hole 151 to fix the electrode piece 111 of the connecting port 11, the electrical connection fixing piece 14 and the electric Connecting piece 15.

Since the electrical connection fixing piece 14 is fixedly and electrically connected to the circuit board body 121, and is fixedly and electrically connected to the electrode piece 111 of the connection port 11 through the screw 13, the electrode piece 111 of the connection port 11 The electrical connection piece 14 can be fixedly and electrically connected to the circuit board body 121 through the electrical connection. The electrode pad 111 of the connection port 11 is electrically connected to the plurality of filter capacitors 123 of the filter circuit board 12 to filter high frequency noise through the filter capacitors 123, and the connection port 11 can be connected to the filter circuit. The board 12 is fixed.

Further, an annular flange 113 protrudes from the periphery of the first locking hole 112 of the electrode sheet 111 to increase the depth of the first locking hole 112, and the screw 13 is locked to the annular flange. The inner edge of 113, therefore, the screw 13 can be more securely locked to the first locking hole 112. The edge of the circuit board body 121 is formed with a notch, and the notch 1213 communicates with the through hole 1210. In this way, when the annular flange 113 is formed on the periphery of the first locking hole 112, the electrode piece 111 of the connecting port 11 is not formed with the gap of the annular flange 113 through the circuit board body 121. 1213 plugged into the board body The through hole 1210 of the 121 is such that the electrode piece 111 of the connecting port 11 is inserted into the through hole 1210 of the circuit board body 121.

Referring to FIG. 2, FIG. 6, and FIG. 7, the filter circuit board 12 further includes at least one electrical connection spring 124.

The at least one electrical connection spring 124 is disposed on the first surface 1211 of the circuit board body 121 and is located at a periphery of the through hole 1210 and abuts against the electrode pad 111 of the connection port 11. The at least one electrical connection spring 124 is electrically connected to the filter capacitors 123 through a circuit (not shown) on the circuit board body 121, and the electrode pads 111 are electrically connected to the optical electrodes 111 through the at least one electrical connection spring 124. One end of the filter capacitor 123.

Referring to FIG. 8 , in the embodiment, the filter circuit board 12 has two electrical connection springs 124 , and the two electrical connection springs 124 are disposed on the first surface 1211 of the circuit board body 121 , and respectively Located at opposite ends of the periphery of the through hole 1210, the two electrical connection elastic pieces 124 respectively abut against opposite sides of the electrode piece 111 of the connection port 11 to sandwich the electrode piece 111. In this way, when the electrode sheet 111 is inserted through the through hole 1210 of the circuit board body 121, it can be clamped by the two electrical connection elastic pieces 124, so that the circuit board body 121 and the electrode piece 111 are fixed and electrically connected. connection.

In addition, as shown in FIG. 9, the filter circuit board 12 further includes a metal fixing member 125. One end of the metal fixing member 125 is fixed to the circuit board body 121 of the filter circuit board 12, and the other end is fixed. It is fixed to the housing 20. In this way, the filter circuit board 12 can be more firmly fixed to the housing 20 through the metal fixing member 125, and can be electrically connected to the housing 20 through the metal fixing member 125, thereby increasing the filtering. The ground path of the circuit board 12 increases the filtering efficiency of the filter circuit board 12. In the embodiment, the metal fastening member 125 is soldered to the circuit board body 121 and locked to the housing 20 .

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been disclosed in the preferred embodiments, it is not intended to limit the present invention. It is to be understood by those skilled in the art that the invention may be modified or modified to equivalent variations, without departing from the invention, without departing from the scope of the invention. The contents of the technical solutions, any simple modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still within the scope of the technical solutions of the present invention.

10 Filter connector 11 Connector 埠 111 Electrode sheet 113 Ring flange 12 Filter circuit board 121 Board body 123 Filter capacitor 124 Electrical connection tab 13 Screw 14 Electrical connection tab 15 Electrical connection piece 20 Housing 30 Internal circuit

Claims (8)

A filter connector is disposed on a casing, and includes: a connecting raft, and one end of the connecting raft is threaded out and fixed in a through hole of the casing, and the connecting raft penetrates the casing An electrode pad protrudes from one end of the through hole; a filter circuit board includes: a circuit board body having a through hole for connecting the opposite first surface and a second surface; wherein the circuit board body is second The surface of the circuit board faces the housing; the perforation on the circuit board body is passed through the electrode pad on the connection port; the plurality of grounding spring pieces are disposed on the second surface of the circuit board body for electrical contact with the housing And a plurality of filter capacitors disposed on the first surface of the circuit board body, one end of each filter capacitor is electrically connected to the electrode pads of the connection port, and the other end is electrically connected to the grounding spring pieces respectively; a metal shielding layer, The system is disposed in the body of the circuit board. The filter connector of claim 1, further comprising: a screw; an electrical connection fixing piece, one end of which is fixedly and electrically connected to the circuit board body, and the other end is formed with a second locking hole; And an electrical connecting piece, the third end of which is formed with a third locking hole, the other end is fixedly and electrically connected to an internal circuit board, and the third locking hole is aligned with the second locking hole; wherein the connection is a first locking hole is formed on the electrode sheet, and the first locking hole is aligned with the second locking hole and the third locking hole; wherein the screw is locked to the first locking hole, the second a locking hole and the third locking hole. The filter connector of claim 2, wherein: An annular flange protrudes from a periphery of the first locking hole of the connecting jaw, and the screw is further locked to an inner edge of the annular flange; a gap is formed on an edge of the circuit board body, and the gap is formed Connect the perforation. The filter connector of claim 1, wherein the filter circuit board further comprises: at least one electrical connection elastic piece disposed on the first surface of the circuit board body and located at the periphery of the perforation and abutting the connection And the at least one electrical connection spring is electrically connected to the filter capacitors, and the electrode sheets are electrically connected to one end of the filter capacitors through the at least one electrical connection spring. The filter connector of claim 1, wherein the filter circuit board further comprises: two electrical connection springs disposed on the first surface of the circuit board body and located at opposite ends of the perforated circumference, The two electrical connection springs respectively abut the opposite sides of the electrode pads of the connection port; the two electrical connection springs are electrically connected to the filter capacitors, and the electrode pieces are electrically connected to the filter capacitors through the two electrical connection spring pieces One end. The filter connector of claim 4 or 5, wherein the outer edge of the electrode tab of the connector is abutted against the inner edge of the perforation of the circuit board body. The filter connector of claim 1, wherein the filter circuit board further comprises: a metal fastening member, one end of which is fixed to the circuit board body of the filter circuit board, and the other end is coupled to the housing Secured. A filter circuit board includes: a circuit board body having a through hole for connecting a first surface and a second surface; and a plurality of grounding spring pieces disposed on the second surface of the circuit board body; The at least one electrically connected elastic piece is disposed on the first surface of the circuit board body and located at the periphery of the through hole; and the plurality of filter capacitors are disposed on the first surface of the circuit board body, and one end of each of the filter capacitors is electrically connected to The at least one electrically connected elastic piece is electrically connected to the grounding elastic pieces respectively; and a metal shielding layer is disposed in the circuit board body.