TWM623128U - Card edge connector - Google Patents

Abstract

The present invention is a card edge connector, which includes an insulating body, which includes opposite front ends and a rear end surface and a card slot running through the front end surface; a row of first terminals and a row of second terminals include a fixing part, an elastic part extending from the fixing part to the card slot, and a pin, the elastic part has a protruding into the card slot The fixed part of the first terminal is located adjacent to the front end surface, and the fixed part of the second terminal is located adjacent to the rear end surface; a shielding member covers the insulating body; a row of the second terminals includes signal terminals and For the grounding terminal, the shielding piece covers the rear end surface of the insulating body. The shielding piece is provided with three grounding fingers corresponding to each grounding terminal. The three grounding fingers are arranged in the up-down direction and abut against the same grounding terminal. The grounding piece abuts the same grounding terminal by a plurality of grounding fingers in the up-down direction, so as to improve the resonance and satisfy the high-speed signal transmission performance.

Description

card edge connector

The present creation relates to a card edge connector.

Chinese utility model patent No. CN210628555U discloses a DDR connector. The connector includes a socket and brackets connected to both ends of the socket, the socket is provided with a slot, the two ends of the socket are respectively provided with a first terminal hole and a second terminal hole, and the first terminal hole is in the socket. A first terminal is arranged, a second terminal is arranged in the second terminal hole, a first insertion hole and a second insertion hole are arranged at one end of the bracket close to the socket, and a first insertion hole is inserted into the first insertion hole. A support plate, the support plate is located directly below the bracket, and the support plate includes a first plug portion inserted into the first socket, and a backing plate portion connected to one end of the first plug portion , the support part connected to the lower side of the middle part of the backing plate part, the mounting part connected to the bottom of the support part, and the first bending part connected to the upper side of the end of the backing plate part, the second insertion hole A side baffle is inserted, the side baffle is located on the outside of the bracket, and the side baffle includes a second insertion part inserted into the second insertion hole and connected to the second insertion part The side plate part at one end, the second bending part and the third bending part respectively connected to the upper and lower sides of the end of the side plate part; The upper end of the clamping part is buckled and connected, and the third bending part is sandwiched between the first bending part and the supporting part. However, as the speed increases, the performance requirements for signal transmission become higher, and the above-mentioned DDR connectors cannot meet the requirements.

Therefore, it is necessary to provide an improved card edge connector to solve the above problems.

The purpose of this creation is to provide a card edge connector which can improve high frequency transmission performance.

In order to achieve the above purpose, the present invention can adopt the following technical solutions: a card edge connector, which includes: an insulating body, which includes an opposite front end surface and a rear end surface, and a card slot passing through the front end surface; a row of first terminals, It includes a fixing portion, an elastic portion extending from the fixing portion to the slot, and a pin, the elastic portion has a contact portion protruding into the slot, and the fixing portion of the first terminal is fixed on the insulating body adjacent to the front face; a row of second terminals, tied to the It includes a fixing portion, an elastic portion extending from the fixing portion to the card slot, and pins, the elastic portion has a contact portion protruding into the card slot, and the fixing portion of the second terminal is fixed on the insulating body near the rear end surface of the insulator body; a shielding member covers the insulating body; a row of the second terminals includes a signal terminal and a grounding terminal, the shielding member covers the rear end surface of the insulating body, and the shielding member is located at the rear end of the insulating body. Corresponding to each grounding terminal, three grounding fingers are arranged, and the three grounding fingers are arranged in the up-down direction and abut against the same grounding terminal.

Compared with the prior art, the present invention has the following effects: the grounding element can effectively improve the high-frequency performance of the card edge connector.

100: Card edge connector

10: Insulation body

11: Front face

12: rear face

13: Card slot

142, 152: fixed slot

21, 31: Elastic part

210, 310: Contact part

22, 32: Fixed part

241, 341: The first interference part

242, 342: Second Interference Section

23, 33: pin

143, 153: Through groove

154: Escape trough

16: Retaining slot

20: The first terminal

900: circuit board

901: Ground Pad

43: Window

30: Second terminal

30G: Ground terminal

30S: Signal terminal

40: Shielding

41: ground pin

42: Ground finger

The first picture is a perspective view of the card edge connector of this creation; the second picture is a perspective view of the card edge connector shown in the first picture from different angles; the third picture is an exploded perspective view of the part of the structure shown in the second picture; the fourth picture It is a sectional view along the dashed line IV-IV in the card edge connector shown in the first figure; the fifth figure is a sectional view along the dashed line VV in the card edge connector shown in the first figure; the sixth figure is shown in the first figure. Sectional view of the card edge connector along the dashed line VI-VI.

In order to facilitate a better understanding of the purpose, structure, features, and effects of the present creation, the present creation will now be further described with reference to the accompanying drawings and specific embodiments.

Please refer to Figures 1 to 6, which are the card edge connector 100 for inserting an M.2 module or M.2 card for transmitting PCI-EXPRESS signals. The specific structure will be described in detail below.

Referring to the first to third figures, the card edge connector 100 includes an insulating body 10 , a row of first terminals 20 , a row of second terminals 30 and a grounding member 40 . The insulating body 10 includes a front end surface 11 and a rear end surface 12 opposite to each other, and a slot 13 penetrating through the front end surface 11 . Referring to the fourth figure, the card slot 13 penetrates forward, and the upper wall of the card slot is shorter and is located behind the lower wall, which is used for the oblique insertion of the electronic card.

Referring to FIG. 4 , the first terminal 20 is inserted into the insulating body 10 backward from the front end surface 11 . The first terminal 20 includes a fixing portion 22 , an elastic portion 21 extending from the fixing portion to the slot 13 , and a pin 23 . The elastic portion 21 has a contact portion 210 protruding into the slot. The fixing part 22 of the first terminal is fixed on the insulating body near the front end face 11. The fixing portion 22 of the first terminal is vertical, and includes a first interference portion 241 and a second interference portion 242 protruding backward. The first and second interference portions are arranged in the up-down direction, and the first interference portion 241 is located at the fixed At the junction of the portion 22 and the elastic portion 21 , the second interference portion 242 is located adjacent to the pin 23 . The insulating body 10 is provided with a plurality of vertical grooves (not numbered, that is, the place to be accommodated by the fixing portion 22 ) whose front end faces backwards, a fixing groove 142 extending backwards from the vertical groove, and a connecting slot at the top of the vertical groove. The fixing part 22 of the first terminal is accommodated in the vertical groove, the first and second interference parts are firmly interfering and fixed in the fixing groove 142, and the elastic part 21 is accommodated in the through groove 143, and is in the penetrating groove 143. The groove 143 can be elastically deformed. Both sides of the fixing part are fixed in the vertical groove interferingly, and the heads of the first and second interference parts have barbs to increase the hard interference force.

Referring to FIG. 5 , the second terminal 30 includes a fixing portion 32 , an elastic portion 31 extending from the fixing portion to the slot 13 , and a pin 33 . The elastic portion 31 has a contact portion 310 protruding into the slot. The fixing portion 32 of the second terminal is fixed at a position adjacent to the rear end surface 12 of the insulating body. The fixing portion 32 of the second terminal is vertical, and includes a first interference portion 341 and a second interference portion 342 that protrude backward. The first and second interference portions are arranged in the up-down direction, and the first interference portion 341 is located at the fixed position. At the junction of the portion 32 and the elastic portion 31 , the second interference portion 342 is located adjacent to the pin 33 . The insulating body 10 is provided with a plurality of vertical grooves (not numbered, ie, the places accommodated by the fixing portion 32 ) whose rear end faces forward and is recessed, a fixing groove 152 extending backward from the vertical grooves, and located above the vertical grooves and is self-contained. The rear end faces forward and penetrates to the through slot 153 of the card slot, the fixing portion 32 of the second terminal is accommodated in the vertical slot, the first and second interference portions are firmly interfered and fixed in the fixing slot 152, and the elastic portion 31 is accommodated in The penetrating groove 153 can be elastically deformed in the penetrating groove 143 . Both sides of the fixing portion 32 are fixed in the vertical groove in an interference manner, and the head of the first and second interference portions have barbs to increase the hard interference force. The front and rear surfaces 11 and 12 are provided with a plurality of escape grooves 154 parallel to the horizontal grooves for improving the process.

Referring to Figures 4 to 5, the contact portion 210 of the first terminal extends into the slot 13 from front to rear, the contact portion 310 of the second terminal extends into the slot 13 from the back to the front; the contact portion 210 of the first terminal Located in front of the contact part 310 of the second terminal and lower than the contact part of the second terminal, the elastic parts 21 and 31 can be elastically deformed, so that the contact parts 210 and 310 can rotate at a small angle in the slot for supplying After the electronic card is inserted obliquely, a stable electrical connection is achieved.

Referring to Figures 2 to 3, the shielding member 40 is a one-piece plate-like structure, the two ends of which are bent forward to be inserted into the holding grooves 16 provided on the insulating body, and covered on the insulating body. The rear end surface 12 of the body makes the shielding member 40 cover all the second terminals 30 laterally. Specifically, referring to FIGS. 4 to 5 , the shielding member 40 extends upward to a position adjacent to the first interference portion 341 of the second terminal 30 , and extends downward to a position adjacent to the first interference portion 341 of the second terminal 30 . Close to the pin 33, this can play a good role in EMI or electromagnetic interference. The pins 33 extend backward out of the rear end surface 12 , and the shielding member 40 avoids the pins 33 backwards so that the shielding member and the rear end surface 12 are spaced at a certain distance.

Referring to Figures 5 to 6, a row of second terminals 30 includes a signal terminal 30S and a ground terminal 30G. The basic structure of the signal terminal and the ground terminal is the same. The second terminal 30 is formed by stamping a metal plate. The plane is perpendicular to the arrangement direction of the second terminals 30 , the fixing portion 32 is vertical, and the above-mentioned interference portions 341 and 342 protrude forward from the front edge of the fixing portion. The shielding member 40 is provided with three grounding fingers 42 corresponding to each grounding terminal 30G. The shielding member has a rectangular window 43 structure corresponding to each grounding finger. The grounding fingers extend upward and forward from the lower edge of the window 43 . The three grounding fingers 42 are arranged in the up-down direction and abut on the same grounding terminal; the three grounding fingers corresponding to each grounding terminal are aligned in the up-down direction, and all the grounding fingers are arranged in three rows along the terminal arrangement direction. as shown in the figure.

The grounding fingers 42 abut against the grounding terminal 30G, so that the grounding terminal 30G and the shielding member 40 are electrically connected to each other. Through the shielding member 40, the ground terminals 30G in a row of the second terminals are connected together to improve the resonance between the terminals, thereby improving the electrical performance of the card edge connector in terms of return loss, insertion loss, and crosstalk. There are ground pins 41 extending below both sides of the shielding member 40 , which can be soldered to the ground pads 901 of the circuit board 900 .

To sum up, this creation meets the requirements of a new type of patent, and a patent application is filed in accordance with the law. However, the above descriptions are only the preferred embodiments of the present creation, and the scope of the present creation is not limited to the aforementioned embodiments. Equivalent modifications or changes made by those who are familiar with the techniques of the present case in accordance with the spirit of the present creation are all applicable. Should be covered within the scope of the following patent applications.

30G: Ground terminal

42: Ground finger

43: Window

32: Fixed part

40: Shielding

Claims (10)

A card edge connector, comprising: an insulating body including opposite front and rear surfaces, and a card slot penetrating the front end; a row of first terminals including a fixing part, from the fixing part to the card The elastic portion and the pins extending from the slot, the elastic portion has a contact portion that protrudes into the slot, the fixing portion of the first terminal is fixed on the front end face of the insulating body; a row of second terminals is It includes a fixing portion, an elastic portion extending from the fixing portion to the card slot, and a pin, the elastic portion has a contact portion protruding into the card slot, and the fixing portion of the second terminal is fixed on the insulating body and a shielding member covering the insulating body; wherein, a row of the second terminals includes a signal terminal and a grounding terminal, the shielding member covers the rear end surface of the insulating body, the The shielding element is provided with three grounding fingers corresponding to each grounding terminal, the three grounding fingers are arranged in the up-down direction and abut against the same grounding terminal. The card edge connector of claim 1, wherein the fixing portion of the second terminal is vertical, and the fixing portion protrudes forward from the front edge of the first interference portion and the second interference portion, 1. The second interference portion is fixed on the insulating body, and the three grounding fingers press against the rear edge of the fixing portion and are located between the first and second interference portions in the up-down direction. The card edge connector of claim 2, wherein the ground finger is a cantilever-shaped structure punched out from the shield and extending obliquely upward. The card edge connector of claim 3, wherein both ends of the shielding member are bent forward to be inserted and fixed on the insulating body, and the shielding member and the rear end surface are spaced a certain distance from each other. The card edge connector of claim 2, wherein the shielding member is plate-shaped, and extends upward to adjacent to the first interference portion, and extends downward to adjacent to the pin. The card edge connector of claim 1, wherein a row of the first terminals is inserted into the front end surface of the insulating body from front to back, and the fixing portion is vertical and includes first and second interference protruding backwards. The first interference portion is located at the junction of the fixed portion and the elastic portion, and the second interference portion is located adjacent to the pin. The card edge connector of claim 4, wherein the shielding member is a rectangular window structure corresponding to the grounding fingers, and the grounding fingers extend upward and forward from the lower edge of the window. The card edge connector according to claim 7, wherein the three grounding fingers corresponding to each of the grounding terminals are aligned in an up-down direction, and all the grounding fingers are neatly arranged in three rows along the terminal arrangement direction. The card edge connector of claim 1, wherein the contact portion of the first terminal extends into the card slot from front to rear, and the contact portion of the second terminal extends into the card slot from back to front. The card edge connector of claim 9, wherein the contact portion of the first terminal is located in front of the contact portion of the second terminal and is lower than the contact portion of the second terminal.

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