Connector high-frequency shielding structure

Abstract

The application discloses a connector high-frequency shielding structure, which comprises an insulating body, a terminal and a grounding iron piece. A plurality of terminal accommodating grooves are arranged on the front and back sides of the card slot of the insulating body in the left-right direction. The terminal comprises a plurality of grounding terminals and a plurality of signal terminals. The grounding terminals and the signal terminals are accommodated in the terminal accommodating grooves according to the design arrangement mode. Two grounding iron piece accommodating grooves are arranged on the insulating body in parallel with the card slot. The two rows of terminal accommodating grooves are arranged between the two grounding iron piece accommodating grooves and the card slot. Two grounding iron pieces made of metal are fixedly accommodated in the two grounding iron piece accommodating grooves. The two grounding iron pieces can shield all the signal terminals in the front-back direction. A plurality of grounding spring sheets are arranged on the grounding iron piece and can be in close contact with the grounding terminals. The grounding iron piece of the application can fully shield the interference signals of the signal terminals and meet the ultrahigh frequency requirement of electronic devices.

Description

Technical Field

[0001] This invention relates to a connector, and more particularly to a high-frequency shielding structure for a connector. Background Technology

[0002] Gen6 type card edge connectors generally include an insulating body, terminals, grounding components, a metal shell, metal auxiliary components, and locking components. The terminals installed on both sides of the card slot in the insulating body are used to clamp the gold fingers on both sides of the electronic card inserted into the card slot in the insulating body for conduction and signal transmission. The grounding components are long strip structures that are inserted into the grounding component receiving slot at the lower end of the insulating body. They are used to shield the holding part of the signal terminal to achieve interference signal shielding. The metal auxiliary components are used to improve the connection strength between the insulating body and the circuit board. The metal shell is sleeved on the outside of the insulating body to strengthen the connector and shield interference signals. The locking components are used to lock and release the electronic card.

[0003] With the continuous iteration of communication networks, high frequency has become an inevitable trend in the electronic communication industry. The higher the frequency, the shorter the wavelength. In high-frequency circuits, signal terminals will generate problems such as high-frequency electric field leakage and reflection. Existing interference signal shielding structures cannot fully shield interference signals, which will cause some interference signals to enter the terminal receiving slot and interfere with the signal terminals, affecting the high-frequency performance of electronic devices. Summary of the Invention

[0004] To overcome the above deficiencies, the present invention provides a high-frequency shielding structure for connectors, which can effectively reduce interference signals from signal terminals during high-frequency transmission and effectively improve the high-frequency performance of connectors.

[0005] The technical solution adopted by this invention to solve its technical problem is: a high-frequency shielding structure for a connector, including an insulating body, terminals, and grounding components. The insulating body has several terminal receiving slots arranged at intervals along the left and right directions on both the front and rear sides of the insertion slot. The terminals include several grounding terminals and several signal terminals. The grounding terminals and signal terminals are respectively accommodated in the terminal receiving slots according to the design arrangement. The insulating body also has two grounding component receiving slots arranged parallel to and at intervals with the insertion slot. The two rows of terminal receiving slots are respectively located between the two grounding component receiving slots and the insertion slot. Two metal grounding components are respectively fixedly accommodated in the two grounding component receiving slots. The two grounding components can shield all signal terminals in the front and rear directions. The grounding components are provided with several grounding springs. The grounding springs can make close contact with the grounding terminals to conduct electricity.

[0006] As a further improvement of the present invention, the terminal receiving groove of the insulating body for receiving the grounding terminal is connected to the grounding component receiving groove through a grounding spring relief opening. The grounding terminal and the signal terminal are sequentially formed from top to bottom as a terminal contact part, a terminal holding part and a terminal welding part. The terminal holding part is fixedly connected to the terminal receiving groove. The grounding spring on the grounding component passes through the grounding spring relief opening and elastically contacts the terminal holding part of the grounding terminal.

[0007] As a further improvement of the present invention, the grounding spring on the grounding component is an elastic cantilever structure formed by tearing and bending on the grounding component, with an upwardly extending grounding spring and a lower grounding spring. The free ends of the upper grounding spring and the lower grounding spring are bent to form convex arc-shaped elastic contact points. The elastic contact points of the upper grounding spring and the lower grounding spring respectively abut against the upper and lower end surfaces of the terminal holding part of the grounding terminal.

[0008] As a further improvement of the present invention, the grounding component can completely block the terminal contact portion and terminal holding portion of the signal electronics.

[0009] As a further improvement of the present invention, the connecting piece is a T-shaped sheet structure with a width at the lower end in the left-right direction greater than that at the upper end in the left-right direction, and the receiving groove of the connecting piece is a T-shaped groove with a width at the lower end in the left-right direction greater than that at the upper end in the left-right direction. The stepped surfaces at the upper and lower ends of the connecting piece stop on the stepped surfaces at the upper and lower ends of the receiving groove of the connecting piece, and at least one barb structure is provided on each of the left and right side walls of the connecting piece. Multiple barb structures are arranged at intervals along the up-down direction on the left and right side walls of the connecting piece, and each barb structure is embedded in the left and right side walls of the receiving groove of the connecting piece to achieve fixed positioning of the connecting piece in the receiving groove of the connecting piece.

[0010] As a further improvement of the present invention, the grounding component is also provided with at least one limiting groove with an upper opening. The limiting groove has shielding walls on both sides for shielding interference signals. Multiple limiting grooves are arranged at intervals in the left and right direction, and the limiting grooves are directly opposite the grounding terminal. The upper section of the grounding component receiving groove of the insulating body is provided with at least one connecting gland. When the grounding component is inserted into the grounding component receiving groove from bottom to top, each connecting gland is tightly inserted into the limiting groove on the grounding component, and a shielding wall receiving groove for accommodating the shielding wall is formed between adjacent connecting glands.

[0011] As a further improvement of the present invention, barb structures are provided on both sides of the limiting groove of the connecting component, and the barb structures can be embedded in the connecting grate of the insulating body.

[0012] As a further improvement of the present invention, the width of the receiving part receiving groove in the front-to-back direction is greater than the thickness of the receiving part, and a plurality of reinforcing ribs are provided at intervals on the surface of the receiving part facing away from the card slot, and the reinforcing ribs abut tightly against the surface of the receiving part receiving groove facing away from the card slot.

[0013] As a further improvement of the present invention, the receiving part receiving groove of the insulating body is provided with a plurality of limiting ribs on the side wall facing away from the insertion slot. The limiting ribs abut against the surface of the receiving part facing away from the insertion slot. The reinforcing ribs are located at the middle position in the vertical direction of the receiving part. The limiting ribs are located on the side wall of the lower opening of the receiving part receiving groove.

[0014] As a further improvement of the present invention, the front and rear side walls of the insulating body are provided with a number of iron shell positioning buckles, and a metal iron shell is provided. The U-shaped metal iron shell is sleeved on the outside of the insulating body, and the bottom surface of the U-shaped metal iron shell covers the upper surface of the insulating body. The bottom surface of the U-shaped metal iron shell is provided with a notch for avoiding insertion slots that are directly opposite to the insertion slots on the insulating body. The side walls of the metal iron shell are provided with a number of positioning slots. The iron shell positioning buckles of the insulating body can be engaged and fixed with the positioning slots on the side walls of the metal iron shell one by one.

[0015] The beneficial technical effects of this invention are as follows: By designing the grounding component on the outside of the terminal as a large shielding wall structure, this invention achieves complete shielding of the terminal contact and terminal holding parts of the signal terminal, which can meet the higher high-frequency requirements of electronic devices. This invention ensures the conductivity stability between the grounding component and the grounding terminal by setting pairs of vertically extending grounding springs on the grounding component to elastically contact the terminal holding part of the grounding terminal. Furthermore, by setting barb structures on the left and right sides of the grounding component and its limiting groove sidewalls, this invention achieves a firm connection and positioning between the grounding component and the insulating body, preventing it from falling off during long-term use. This invention also improves the overall strength of the grounding component by setting reinforcing ribs on it, preventing deformation during assembly and storage. Furthermore, several limiting ribs are set on the sidewalls of the grounding component receiving groove of the insulating body to clamp the grounding component, allowing the receiving groove of the insulating body to be made relatively wide, reducing the difficulty of injection molding of the insulating body. The grounding component of this invention can fully shield the interference signals of the signal terminal, meeting the ultra-high frequency requirements of electronic devices. Attached Figure Description

[0016] Figure 1 An exploded perspective view of the connector using the present invention;

[0017] Figure 2 This is a perspective view of the contact component of the present invention;

[0018] Figure 3This is a schematic diagram of the internal subway component receiving groove structure of the insulating body of the present invention;

[0019] Figure 4 This is a schematic diagram of the assembly principle of the grounding component and the insulating body of the present invention;

[0020] Figure 5 This is a diagram showing the positioning of the grounding component of the present invention within the grounding component receiving groove of the insulating body;

[0021] Figure 6 This is a diagram showing the contact state between the grounding spring and the grounding terminal of the grounding component of the present invention;

[0022] Figure 7 This diagram shows the contact and limiting state of the reinforcing rib of the ground connection component in this invention with the inner sidewall of the receiving groove of the ground connection component.

[0023] Figure 8 This is a diagram showing the usage state of the connector employing the present invention. Detailed Implementation

[0024] To make the advantages, technical solutions, and innovations of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings as embodiments. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the protection scope of this invention.

[0025] Example: A high-frequency shielding structure for a connector includes an insulating body 11, terminals 12, and grounding components 14. The insulating body 11 has several terminal receiving slots 112 arranged at intervals along the left-right direction on both the front and rear sides of the insertion slot 110. The terminals 12 include several grounding terminals and several signal terminals. The grounding terminals and signal terminals are respectively accommodated in the terminal receiving slots 112 according to the design arrangement. The insulating body 11 also has two grounding component receiving slots 111 arranged parallel to and at intervals with the insertion slot 110. The two rows of terminal receiving slots 112 are respectively located between the two grounding component receiving slots 111 and the insertion slot 110. Two metal grounding components 14 are respectively fixedly accommodated in the two grounding component receiving slots 111. The two grounding components 14 can shield all signal terminals in the front-back direction. The grounding components 14 are provided with several grounding springs 141, which can make close contact with the grounding terminals to conduct electricity.

[0026] The grounding component 14 is designed as a sheet structure and is fixedly inserted into the grounding component receiving groove 111 of the insulating body 11. The entire grounding component 14 extends from the bottom of the welding to the surface of the connector insertion slot 110, forming an overall shielding wall for shielding interference signals from the signal terminals, which can improve the high-frequency performance of the connector.

[0027] The insulating body 11 is connected to the terminal receiving groove for accommodating the grounding terminal and the grounding component receiving groove 111 through a grounding spring relief opening. The grounding terminal and the signal terminal are sequentially formed from top to bottom as a terminal contact part 121, a terminal holding part 122 and a terminal welding part 123. The terminal holding part 122 is fixedly connected to the terminal receiving groove 112. The grounding spring 141 on the grounding component 14 passes through the grounding spring relief opening and elastically contacts the terminal holding part 122 of the grounding terminal.

[0028] The grounding spring 141 on the grounding component 14 abuts against the surface of the terminal holding part 122 of the grounding terminal through the grounding spring clearance between the grounding component receiving groove 111 and the terminal receiving groove of the grounding terminal, thus achieving conductivity with the grounding terminal. The grounding terminal can be a long strip of metal sheet that is bent and shaped multiple times to form a cantilever structure that can swing back and forth with the terminal contact part 121, for contacting the electronic card inserted into the card slot 110. Its terminal welding part 123 is used to extend out of the lower end of the connector and weld to the circuit board. The left and right sides of its terminal holding part 122 can be provided with stepped structures and barbs to achieve fixed connection with the terminal receiving groove. The grounding spring 141 on the grounding component 14 can abut against the rear or front side of the terminal holding part 122 of the grounding terminal, and it makes elastic contact with the plane of the terminal holding part 122 of the grounding terminal, resulting in stable contact.

[0029] The grounding spring 141 on the grounding component 14 is an elastic cantilever structure formed by tearing and bending. The upper and lower grounding springs 141 extend upwards, and their free ends are bent to form convex arc-shaped elastic contact points. These contact points abut tightly against the upper and lower surfaces of the terminal holding portion 122 of the grounding terminal. The tearing and bending process creates two grounding springs 141 that simultaneously abut against the terminal holding portion 122 of the grounding terminal, ensuring sufficient contact and conductivity between the grounding component 14 and each grounding terminal, preventing poor contact.

[0030] The grounding component 14 can completely block the terminal contact portion 121 and the terminal holding portion 122 of the signal electronics.

[0031] The connecting component 14 is a T-shaped sheet structure with a lower end wider than its upper end in the same direction. The connecting component receiving groove 111 is a T-shaped groove with a lower end wider than its upper end in the same direction. The stepped surfaces at both ends of the connecting component 14 stop on the stepped surfaces at both ends of the connecting component receiving groove 111. At least one barb structure 142 is provided on each of the left and right side walls of the connecting component 14. Multiple barb structures 142 are arranged at intervals along the vertical direction on the left and right side walls of the connecting component 14. Each barb structure 142 is embedded in the left and right side walls of the connecting component receiving groove to achieve fixed positioning of the connecting component 14 within the connecting component receiving groove 111. The connecting component 14 uses the stepped surface to limit the insertion depth within the connecting component receiving groove 111, and achieves a fixed connection with the insulating body 11 through the barb structures 142. The barb structures 142 are located on the side walls in the left and right directions and do not increase the width of the connector in the front and back directions.

[0032] The grounding component 14 is also provided with at least one limiting groove 143 with an upper opening. The limiting groove 143 has shielding walls 145 on both sides for shielding interference signals. Multiple limiting grooves 143 are arranged at intervals in the left and right direction, and the limiting grooves 143 are directly opposite the grounding terminal. The upper section of the grounding component receiving groove 111 of the insulating body 11 is provided with at least one connecting gland 1112. When the grounding component 14 is inserted into the grounding component receiving groove 111 from bottom to top, each connecting gland 1112 is tightly inserted into the limiting groove 143 on the grounding component 14. A shielding wall receiving groove 1113 for accommodating the shielding wall 145 is formed between adjacent connecting glands 1112.

[0033] When the connecting part 14 is inserted into the connecting part receiving groove 111 of the insulating body 11, the limiting groove 143 on the connecting part 14 is engaged with the connecting gland 1112 of the insulating body 11. This can guide and limit the insertion of the connecting part 14, and improve the fixed stability of the connecting part 14 in the connecting part receiving groove 111 of the insulating body 11.

[0034] The limiting groove 143 of the connecting component 14 is provided with barbed structures 142 on both sides of the side wall. The barbed structures 142 can be embedded in the side walls of the connecting gland 1112 of the insulating body 11. By embedding the barbed structures 142 on the side wall of the limiting groove 143 of the connecting component 14 with the side wall of the connecting gland 1112 in the insulating body 11, the connection stability between the connecting component 14 and the insulating body 11 is further improved.

[0035] The width of the grounding component receiving groove 111 in the front-to-back direction is greater than the thickness of the grounding component 14. Several reinforcing ribs 144 are spaced apart on the surface of the grounding component 14 facing away from the insertion slot 110. These reinforcing ribs 144 abut tightly against the surface of the grounding component receiving groove 111 facing away from the insertion slot 110. The reinforcing ribs 144 are integrally formed on the grounding component 14 by stamping, and are elongated strip-shaped structures extending vertically. This structure prevents deformation of the grounding component 14 and ensures that the grounding spring 141 on the grounding component 14 maintains tight contact with the grounding terminal.

[0036] The insulating body 11 has a plurality of limiting ribs 1111 on the side wall of the contact component receiving groove 111 facing away from the insertion slot 110. The limiting ribs 1111 abut tightly against the surface of the contact component 14 facing away from the insertion slot 110. The reinforcing rib 144 is located at the middle position in the vertical direction of the contact component 14, and the limiting ribs 1111 are located on the side wall of the lower opening of the contact component receiving groove 111. This structure allows the width of the contact component receiving groove 111 to be relatively large, which facilitates the injection molding of the insulating body 11.

[0037] The insulating body 11 is further provided with several iron shell positioning buckles 113 on its front and rear side walls, and also with a metal shell 13. The U-shaped metal shell 13 is fitted onto the outside of the insulating body 11, with the bottom surface of the U-shaped structure of the metal shell 13 covering the upper surface of the insulating body 11. The bottom surface of the U-shaped structure of the metal shell 13 has a notch 131 that is directly opposite to the insertion slot 110 on the insulating body 11. Several positioning slots 132 are provided on the side walls of the metal shell 13. The iron shell positioning buckles 113 of the insulating body 11 can be engaged and fixed with the positioning slots 132 on the side walls of the metal shell 13 one by one. The metal shell 13 can further shield interference signals and improve the connection strength of the connector on the circuit board.

Claims

1. A high-frequency shielding structure for a connector, comprising an insulating body (11), terminals (12), and grounding components (14), wherein the insert slot (110) of the insulating body is provided with a plurality of terminal receiving slots (112) arranged at intervals along the left-right direction on both the front and rear sides, and the terminals include a plurality of grounding terminals and a plurality of signal terminals, wherein the grounding terminals and signal terminals are respectively accommodated in each terminal receiving slot according to a designed arrangement, characterized in that: The insulating body also has two grounding component receiving slots (111) arranged parallel to and spaced apart from the card slot. Two rows of terminal receiving slots are located between the two grounding component receiving slots and the card slot. Two metal grounding components are fixedly housed in the two grounding component receiving slots. The two grounding components can block all signal terminals in the front and rear directions. The grounding components are provided with several grounding springs (141). The grounding springs can make close contact with the grounding terminals to conduct electricity.

2. The connector high-frequency shielding structure according to claim 1, characterized in that: The insulating body is connected to the terminal receiving groove for accommodating the grounding terminal and the grounding component receiving groove through a grounding spring relief opening. The grounding terminal and the signal terminal are sequentially formed from top to bottom as a terminal contact part (121), a terminal holding part (122), and a terminal welding part (123). The terminal holding part is fixedly connected to the terminal receiving groove, and the grounding spring on the grounding component passes through the grounding spring relief opening and elastically contacts the terminal holding part of the grounding terminal.

3. The connector high-frequency shielding structure according to claim 2, characterized in that: The grounding spring on the grounding component is an elastic cantilever structure formed by tearing and bending. The upper and lower grounding springs extend upwards. The free ends of the upper and lower grounding springs are bent to form convex arc-shaped elastic contact points. The elastic contact points of the upper and lower grounding springs respectively abut against the upper and lower surfaces of the terminal holding part of the grounding terminal.

4. The connector high-frequency shielding structure according to claim 2, characterized in that: The grounding component can completely shield the terminal contact and terminal holding part of the signal electronics.

5. The connector high-frequency shielding structure according to claim 1, characterized in that: The receiving component is a T-shaped sheet structure with a width at the lower end in the left-right direction greater than that at the upper end in the left-right direction. The receiving component receiving groove is a T-shaped groove with a width at the lower end in the left-right direction greater than that at the upper end in the left-right direction. The stepped surfaces at the upper and lower ends of the receiving component stop on the stepped surfaces at the upper and lower ends of the receiving component receiving groove. At least one barb structure (142) is provided on each of the left and right side walls of the receiving component. Multiple barb structures are arranged at intervals along the up-down direction on the left and right side walls of the receiving component. Each barb structure is embedded in the left and right side walls of the receiving component receiving groove to achieve fixed positioning of the receiving component in the receiving component receiving groove.

6. The connector high-frequency shielding structure according to claim 5, characterized in that: The grounding component is also provided with at least one limiting groove (143) with an opening at the top. The limiting groove is flanked by shielding walls (145) for shielding interference signals. Multiple limiting grooves are arranged at intervals in the left and right direction, and the limiting grooves are directly opposite the grounding terminal. The upper section of the grounding component receiving groove of the insulating body is provided with at least one connecting gland (1112). When the grounding component is inserted into the grounding component receiving groove from bottom to top, each connecting gland is tightly inserted into the limiting groove on the grounding component, and a shielding wall receiving groove (1113) is formed between adjacent connecting glands to accommodate the shielding wall.

7. The connector high-frequency shielding structure according to claim 6, characterized in that: The limiting groove of the connecting component is provided with barb structures on both sides, and the barb structures can be embedded in the connecting grate of the insulating body on both sides.

8. The connector high-frequency shielding structure according to claim 1 or 7, characterized in that: The width of the receiving part receiving groove in the front-to-back direction is greater than the thickness of the receiving part. Several reinforcing ribs (144) are provided at intervals on the surface of the receiving part facing away from the card slot. The reinforcing ribs abut tightly against the surface of the receiving part receiving groove facing away from the card slot.

9. The connector high-frequency shielding structure according to claim 8, characterized in that: The insulating body has a plurality of limiting ribs (1111) on the side wall of the receiving part receiving groove facing away from the card slot. The limiting ribs are tightly against the surface of the receiving part facing away from the card slot. The reinforcing ribs are located at the middle position in the vertical direction of the receiving part. The limiting ribs are located on the side wall of the lower opening of the receiving part receiving groove.

10. The connector high-frequency shielding structure according to claim 1, characterized in that: The insulating body is also provided with several iron shell positioning buckles (113) on the front and rear side walls, and a metal iron shell (13) is also provided. The U-shaped metal iron shell is sleeved on the outside of the insulating body. The bottom surface of the U-shaped metal iron shell covers the upper surface of the insulating body. The bottom surface of the U-shaped metal iron shell is provided with a card insertion clearance notch (131) that is directly opposite to the card insertion slot on the insulating body. Several positioning slots (132) are provided on the side walls of the metal iron shell. The iron shell positioning buckles of the insulating body can be locked and fixed by engaging with the positioning slots on the side walls of the metal iron shell one by one.

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