CN212542861U

CN212542861U - Anti-surge connector

Info

Publication number: CN212542861U
Application number: CN202021684340.8U
Authority: CN
Inventors: 韩林; 陈才华; 肖萍招
Original assignee: Ji'an Lianji Electronic Co ltd
Current assignee: Ji'an Lianji Electronic Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-02-12
Anticipated expiration: 2030-08-13

Abstract

The utility model discloses an anti-surge connector, which comprises a connector body, an anti-surge circuit board and a shielding shell; the connector body comprises an insulator and an outer shell; the insulator is provided with a grounding terminal for connecting with an external circuit board; the outer shell is coated on the outer surface of the front end of the insulator; the anti-surge circuit board is arranged on the insulator, and the grounding terminal is in conduction connection with the output end of the anti-surge circuit board; this shielding case covers the anti-surge circuit board, and shielding case and shell body turn-on connection, the protruding EMI contact point of establishing a plurality of equidistant ranges on the internal face of shielding case, and each EMI contact point all contacts with the shell body, and this shielding case downwardly extending has the contact shell fragment, this contact shell fragment and anti-surge circuit board's input turn-on connection. Through being provided with the anti-surge circuit board on the connector body to the cooperation is provided with the EMI contact point of equidistant range, makes the connector have the anti-surge function, and reaches good shielding effect and good EMI performance.

Description

Anti-surge connector

Technical Field

The utility model belongs to the technical field of the connector technique and specifically relates to indicate an anti-surge type connector.

Background

The connector is a component which is frequently contacted by electronic engineering technicians and has a very simple function of erecting a communication bridge between the blocked part or isolated and non-communicated circuits in the circuit so as to circulate current and realize a preset function of the circuit. The connector forms and structures are widely varied, and there are various types of connectors depending on the application, frequency, power, application environment, and the like.

Surges are also called surge waves, and as the name suggests, are transient over-voltages that exceed normal operating voltages. Essentially, a surge is a sharp pulse that occurs in only a few millionths of a second and can cause surges due to heavy equipment, short circuits, power switching, or large engines.

The existing connector does not have the function of preventing the surge, and cannot provide protection for electrical equipment when the connector meets the surge condition, so that the equipment is damaged, serious consequences are possibly formed, and the problems of poor shielding effect and poor EMI performance exist in the existing connector structure. Therefore, there is a need for improvements in current connectors.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an anti-surge connector, which can effectively solve the problem that the existing connector has no anti-surge function and has poor shielding effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an anti-surge connector comprises a connector body, an anti-surge circuit board and a shielding shell;

the connector body comprises an insulator and an outer shell; the insulator is provided with a grounding terminal used for being connected with an external circuit board, and the grounding terminal vertically downwards extends out of the insulator; the outer shell is coated on the outer surface of the front end of the insulator;

the anti-surge circuit board is arranged on the insulator and positioned at the rear end of the shell, and the grounding terminal is in conduction connection with the output end of the anti-surge circuit board;

the shielding shell covers the outer surface of the rear end of the insulator and covers the anti-surge circuit board, the shielding shell is in conduction connection with the outer shell, a plurality of EMI contact points which are arranged at equal intervals are convexly arranged on the inner wall surface of the shielding shell, each EMI contact point is in contact with the outer shell, the shielding shell extends downwards to form a contact elastic sheet, and the contact elastic sheet is in conduction connection with the input end of the anti-surge circuit board.

As a preferred scheme, the rear end of the insulator is concavely provided with a mounting groove, and the bottom surface of the mounting groove extends upwards to form a positioning column; the anti-surge circuit board is embedded in the mounting groove to be fixed, and a positioning hole matched with the positioning column is formed in the anti-surge circuit board.

As a preferable scheme, two positioning columns are provided, and the two positioning columns are respectively located at two sides of the rear end of the insulator; correspondingly, the number of the positioning holes is two, and the two positioning holes are respectively positioned on two sides of the front end of the anti-surge circuit board.

Preferably, the rear end of the insulator is recessed with a terminal mounting groove located below the mounting groove, and the ground terminal is located in the terminal mounting groove.

Preferably, the ground terminal has a spring portion, and the spring portion of the ground terminal elastically presses against the output end of the surge-proof circuit board to be in contact conduction.

As a preferred scheme, two side surfaces of the outer shell extend downwards to form fixed welding feet; and welding feet extend downwards from the two side plates of the shielding shell, and are connected with the fixed welding feet in a short circuit mode.

Preferably, the two side surfaces of the insulator are provided with first buckling parts; and a second buckling hole matched with the first buckling part is formed in the side plate of the shielding shell.

Preferably, the shielding case is concave and convex to form the EMI contact point on the inner wall surface of the shielding case, and the EMI contact point has a convex hull structure.

Preferably, the EMI contact points are located at a front end edge of the shield case, and the plurality of EMI contact points are distributed on the top plate and the left and right side plates of the shield case.

As a preferable scheme, the rear end of the top plate of the shielding shell is bent downwards to extend out of a rear cover plate, two ends of the rear cover plate are bent forwards to form fixing lugs, the fixing lugs are provided with first buckling holes, and a side plate of the shielding shell is convexly provided with second buckling parts matched with the first buckling holes.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:

through being provided with the anti-surge circuit board, and this anti-surge circuit board's input and contact shell fragment turn-on connection, this anti-surge circuit board's output and ground terminal turn-on connection, make the surge current who gets into from the shell body can enter into the anti-surge circuit board through the contact shell fragment, transmit outside the connector by ground terminal after the anti-surge circuit board buffering, thereby play the effect of anti-surge, and the EMI contact point of a plurality of equidistant ranges is established to the internal face epirelief of cooperation shielding shell, each EMI contact point all contacts with the shell body, play the effect of cutting the magnetic line of force, form good shielding, with the good EMI performance of assurance product.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic front view of a preferred embodiment of the present invention;

FIG. 2 is a schematic reverse side view of a preferred embodiment of the present invention;

fig. 3 is an exploded view of the preferred embodiment of the present invention;

FIG. 4 is a cross-sectional view of a preferred embodiment of the present invention;

fig. 5 is a schematic diagram of the surge protection circuit board according to the preferred embodiment of the present invention.

The attached drawings indicate the following:

10. connector body 11, insulator

111. Positioning column 112 and first buckling part

12. Outer case 121, fixing leg

13. Grounding terminal 131, spring plate part

101. Mounting groove 102, terminal mounting groove

20. Anti-surge circuit board 201 and output end

202. Positioning hole 203, input end

21. First capacitor 22, second capacitor

23. Resistor 30 and shielding case

31. EMI contact point 32, contact spring piece

301. Top plate 302, side plates

3021. Second buckle part 3022 and second buckle hole

3023. Weld leg 303, back shroud

304. A fixing ear 3041 and a first fastening hole.

Detailed Description

Referring to fig. 1 to 5, a specific structure of a preferred embodiment of the present invention is shown, which includes a connector body 10, an anti-surge circuit board 20 and a shielding shell 30.

The connector body 10 includes an insulator 11 and an outer housing 12; the insulator 11 is provided with a grounding terminal 13 for connecting with an external circuit board, and the grounding terminal 13 vertically downwards extends out of the insulator 11; the outer shell 12 covers the outer surface of the front end of the insulator 11, and the outer shell 12 mainly plays a role in protecting the insulator 11; in this embodiment, the rear end of the insulator 11 is concavely provided with a mounting groove 101, the bottom surface of the mounting groove 101 extends upwards to form two positioning pillars 111, and the two positioning pillars 111 are respectively located at two sides of the rear end of the insulator 11; a terminal mounting groove 102 is concavely arranged at the rear end of the insulator 11, the terminal mounting groove 102 is positioned below the mounting groove 101, the grounding terminal 13 is positioned in the terminal mounting groove 102, and the grounding terminal 13 is provided with an elastic sheet part 131; in addition, fixing welding feet 121 extend downwards from both side surfaces of the outer shell 12, and first buckling parts 112 are disposed on both side surfaces of the insulator 11.

The surge protection circuit board 20 is disposed on the insulator 11 and located at the rear end of the outer case 12, and the ground terminal 13 is conductively connected to the output terminal 201 of the surge protection circuit board 20; in this embodiment, the anti-surge circuit board 20 is embedded in the mounting groove 101 and fixed, two positioning holes 202 are formed in the anti-surge circuit board 20 and matched with the positioning posts 111, and the two positioning holes 202 are respectively located at two sides of the front end of the anti-surge circuit board 20; the elastic piece part 131 of the ground terminal 13 elastically presses against the output end 201 of the surge-proof circuit board 20 to be in contact conduction, and poor contact of the connector due to vibration can be prevented through the design that the elastic piece part 131 is in contact with the surge-proof circuit board 20; in addition, surge protection circuit board 20 has first capacitor 21, second capacitor 22, and resistor 23, where first capacitor 21 and second capacitor 22 are connected in series between input terminal 201 and output terminal 203 of surge protection circuit board 20, and resistor 23 is connected in parallel with second capacitor 22.

The shielding shell 30 is coated on the outer surface of the rear end of the insulator 11 and covers the anti-surge circuit board 20, the shielding shell 30 is in conduction connection with the outer shell 12, a plurality of EMI contact points 31 which are arranged at equal intervals are convexly arranged on the inner wall surface of the shielding shell 30, each EMI contact point 31 is in contact with the outer shell 12 and plays a role of cutting magnetic lines of force to form good shielding so as to ensure good EMI performance of a product, a contact elastic sheet 32 extends downwards from the shielding shell 30, the contact elastic sheet 32 is in conduction connection with the input end 203 of the anti-surge circuit board 20, and poor contact of the connector caused by vibration can be prevented through the design that the contact elastic sheet 32 is in contact with the anti-surge circuit board 20; in the present embodiment, the shielding case 30 is concave and convex to form the aforementioned EMI contact points 31 on the inner wall surface of the shielding case 30, and the EMI contact points 31 are convex hull structures, and the EMI contact points 31 are located at the front end edge of the shielding case 30, and a plurality of EMI contact points 31 are distributed on the top plate 301 and the left and right side plates 302 of the shielding case 30; in addition, the rear end of the top plate 301 is bent downward to extend a rear cover plate 303, two ends of the rear cover plate 303 are bent forward to form fixing lugs 304, the fixing lugs 304 are provided with first fastening holes 3041, the side plate 302 is convexly provided with second fastening parts 3021 matched with the first fastening holes 3041, the second fastening parts 3021 are fastened with the first fastening holes 3041, the side plate 302 is further provided with second fastening holes 3022 matched with the first fastening parts 112, and the second fastening holes 3022 are fastened and fixed with the first fastening parts 112, so that the shielding shell 30 is fastened and connected with the insulator 11, and the assembly efficiency of the connector can be improved; and, two side plates 302 of the shielding shell 30 are extended with solder legs 3023 downward, and the solder legs 3023 are connected with the fixed solder legs 111 of the outer shell 12 for short circuit.

Detailed description the working principle of the present embodiment is as follows:

first, surge current enters the outer housing 11 of the connector body 10 from the outside, then is conducted to the shield shell 30, then enters the surge-proof circuit board 20 from the input terminal 201 through the contact spring 32, then is buffered by the first capacitor 21, the second capacitor 22 and the resistor 23, and then is output from the output terminal 203, and finally flows out of the connector through the ground terminal 13.

The utility model discloses a design focus lies in:

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. An anti-surge connector, characterized in that: the connector comprises a connector body, an anti-surge circuit board and a shielding shell;

2. The anti-surge connector according to claim 1, wherein: the rear end of the insulator is concavely provided with a mounting groove, and a positioning column extends upwards from the bottom surface of the mounting groove; the anti-surge circuit board is embedded in the mounting groove to be fixed, and a positioning hole matched with the positioning column is formed in the anti-surge circuit board.

3. The anti-surge connector according to claim 2, wherein: the two positioning columns are respectively positioned on two sides of the rear end of the insulator; correspondingly, the number of the positioning holes is two, and the two positioning holes are respectively positioned on two sides of the front end of the anti-surge circuit board.

4. The anti-surge connector according to claim 2, wherein: the rear end of the insulator is concavely provided with a terminal mounting groove, the terminal mounting groove is positioned below the mounting groove, and the grounding terminal is positioned in the terminal mounting groove.

5. The anti-surge connector according to claim 1, wherein: the ground terminal is provided with a spring piece part, and the spring piece part of the ground terminal is elastically pressed on the output end of the anti-surge circuit board to be in contact conduction.

6. The anti-surge connector according to claim 1, wherein: fixed welding feet extend downwards from two side surfaces of the outer shell; and welding feet extend downwards from the two side plates of the shielding shell, and are connected with the fixed welding feet in a short circuit mode.

7. The anti-surge connector according to claim 1, wherein: two side surfaces of the insulator are respectively provided with a first buckling part; and a second buckling hole matched with the first buckling part is formed in the side plate of the shielding shell.

8. The anti-surge connector according to claim 1, wherein: the shielding shell is concave and convex, so that the EMI contact point is formed on the inner wall surface of the shielding shell, and the EMI contact point is of a convex hull structure.

9. The surge-proof connector according to claim 1 or 8, wherein: the EMI contact points are located at the front end edge of the shield case, and a plurality of EMI contact points are distributed on the top plate and the left and right side plates of the shield case.

10. The anti-surge connector according to claim 1, wherein: the rear end of the top plate of the shielding shell is bent downwards to extend a rear cover plate, two ends of the rear cover plate are bent forwards to form fixing lugs, first buckling holes are formed in the fixing lugs, and a second buckling part matched with the first buckling holes is arranged on the side plate of the shielding shell in a protruding mode.