TWI707508B - Card edge connector - Google Patents

Abstract

A card edge connector comprises an elongated insulating body, a plurality of terminals housed in the insulating body, and a metal shell for shielding the insulating body. The insulating body is provided with a mounting surface and an insertion surface opposite to the mounting surface. Said insulating body is recessed from said insertion surface with a longitudinal central slot and a plurality of terminal slots located at both sides of said central slot. Said terminals are received in the terminal slots and extend into the central slot. The metal shell includes a shielding part covering the terminal slots at least partly. And a protrusion is provided between the insulating body and the shielding part so as to form a gap between the shielding part and the insertion surface, which can avoid the terminals and the metal shell from short circuit.

Description

Card edge connector

This creation is related to a card edge connector, in particular to a card edge connector with a metal shell.

The Republic of China Patent No. M294139 discloses a card edge connector, which is used to connect a circuit board. The card edge connector includes a longitudinally long insulating body with a central slot, a plurality of conductive terminals and a metal shell with a shielding effect, wherein the metal shell covers the insertion surface of the insulating body and Two sides. However, the metal shell of the card edge connector covers the insertion surface of the insulating body, so the metal shell is easily overlapped with the terminals in the insulating body and short circuit occurs; at the same time, when the structure of the card edge connector is relatively slender At this time, the metal shell mounted on the insulating body is prone to warping and deformation.

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

The object of the present invention is to provide a card edge connector with a metal shell, which can effectively improve the strength and stability of the card edge connector.

In order to solve the above technical problems, the present invention adopts the following technical solutions: a card edge connector, including a longitudinally long insulating body, a plurality of conductive terminals accommodated in the insulating body, and a metal shell that shields the insulating body; the insulating body is provided with mounting Surface and an insertion surface opposite to the mounting surface, the insulating body is recessed from the insertion surface with a longitudinally long central slot, and the insulating body is recessed from the insertion surface with two recesses located in the central slot Terminal slots on the side; the conductive terminals include The holding part of the body, the elastic contact part extending from one end of the holding part, the contact part is correspondingly received in the terminal slot and protrudes into the central slot, and the metal shell includes at least partially covering the terminal slot A covering part is provided with a protrusion between the insulating body and the covering part to form a gap between the covering part and the insertion surface.

Compared with the prior art, the present invention has the following beneficial effects: the covering part of the metal shell is hung on the insertion surface of the insulating body, which can prevent dust and make the card edge connector more beautiful as a whole. A protrusion is provided between the insulating body and the covering portion to form a gap between the covering portion and the insertion surface, so that the contact portion of the conductive terminal will not contact the metal shell when pressed by the electronic card The cover part touches.

100: Card edge connector

101: Insert face

102: mounting surface

103: seat bottom

1: Insulating body

11: side wall

110: terminal slot

112: Containment Slot

113: Step

12: End wall

120: Groove

13: Central slot

131: steps

132: Slot Bottom

14: key buckle

15: raised

16: Tower part

160: installation slot

2: conductive terminal

21: Holding part

22: Contact

220: free end

23: Welding Department

3: Metal shell

30: main body

31: Upper buckle part

32: Lower buckle part

33: Side buckle

34: cover part

4: Card locking mechanism

5: lock plate

6: Electronic card

60: base

61: Socket

The first figure is a perspective view of the card edge connector of this invention; the second figure is an exploded view of the card edge connector shown in the first figure; the third figure is a partial enlarged view of the card edge connector shown in the second figure; Figure is an exploded view of the card edge connector shown in Figure 2 from another angle; Figure 5 is a partial enlarged view of the card edge connector shown in Figure 4; Figure 6 is the card edge connector shown in Figure 1 A cross-sectional view along line VI-VI; Figure 7 is a cross-sectional view of the card edge connector shown in Figure 1 along line VI-VI, in which the electronic card is inserted into the card edge connector; and Figure 8 is the card edge connector shown in Figure 1 Sectional view along line Ⅷ-Ⅷ.

The creation will be described in detail below in conjunction with preferred embodiments.

Please refer to the first and second figures, the card edge connector 100 of the present invention is used to insert an electronic card 6. The card edge connector 100 includes an insulating body 1 extending in the longitudinal direction, a plurality of conductive terminals 2 accommodated in the insulating body 1, a metal shell 3 that shields and reinforces the insulating body 1, and is arranged on the insulating body 1 1 and used to lock the electronic card 6 and the locking mechanism 4 arranged in the insulating body 1 to enable the card edge connector 100 to be reliably mounted on a circuit board (not shown).

The insulating body 1 includes two side walls 11 extending along the longitudinal direction thereof and two end walls 12 respectively connecting the two ends of the two side walls 11. The insulating housing 1 has an insertion surface 101 arranged horizontally and a mounting surface 102 arranged opposite to the insertion surface 101. In the vertical direction, a bottom 103 is formed at the bottom of the insulating body 1 for stably placing the card edge connector 100 on the circuit board (not shown). The bottom surface of the side wall 11 is higher than the mounting surface 102 of the insulating housing 1. The insertion surface 101 of the insulating body 1 includes the top surface of the side wall 11. The insulating body 1 is recessed downward from the insertion surface 101 with a central slot 13 for receiving the insertion portion 61 of the electronic card 6, and the insulating housing 1 is recessed downward from the insertion surface 101 with a terminal slot 110 is used for receiving the conductive terminal 2. Taking the direction of inserting the electronic card 6 as the downward direction, each side wall 11 is recessed from its top surface with a plurality of the terminal slots 110 (not shown) arranged in the longitudinal direction and connected with the central slot 13 All icons). The central slot 13 is provided with a key buckle 14 connected to the two side walls 11, and the key buckle 14 holds the above-mentioned locking plate member 5 inside. The button 14 is used to prevent the electronic card 6 from being inserted incorrectly. The end wall 12 is provided with a tower portion 16 pivotally connected to the locking mechanism 4, and the tower portion 16 is provided with an installation groove 160 for receiving the locking mechanism 4.

The conductive terminal 2 is correspondingly received in the terminal slot 110 of the side wall 11. Each conductive terminal 2 is provided with a holding part 21 fixed in the insulating body 1, an elastic contact part 22 projecting from one end of the holding part 21 into the central slot 13, and a welding part extending from the other end of the holding part 21 out of the insulating body 1 twenty three. The contact portion 22 extends upward along the terminal slot 110 without exceeding the insertion surface 101 of the insulating body 1, and its free end 220 faces the central slot 13 and overlaps the insulating block in the terminal slot 110 on.

Please refer to the second, fourth and fifth figures, the metal shell 3 includes two metal shells respectively attached to the outside of the two side walls 11, and each metal shell is provided with a cover 34 for The insertion surface 101 of the insulating body 1 is covered. Each metal shell is also provided with a longitudinal body portion 30, an upper buckle portion 31 bent and extended from the top edge of the body portion 30, a lower buckle portion 32 bent and extended from the bottom edge of the body portion 30, and a self The main body portion 30 has two side buckling portions 33 that are bent and extended at both ends. The upper buckle portion 31 and the lower buckle portion 32 are oppositely arranged in a vertical direction perpendicular to the longitudinal direction, and the two The side buckling parts 33 are arranged oppositely along the longitudinal direction. The main body portion 30 of the metal shell is attached to the outside of the side wall 11 and extends to the insertion surface 101 of the insulating body 1 to form the covering portion 34, which is formed by the metal shell on the insertion surface 101 of the insulating body 1. In order to improve the overall appearance of the card edge connector 100, the terminal groove 110 on the insertion surface 101 is especially shielded, and it also plays a role of dustproof. In this embodiment, the cover portion 34 partially covers the terminal groove 110, of course, in other embodiments, the terminal groove 110 may be completely covered. The upper surface of the upper buckle portion 31 is flush with the upper surface of the covering portion 34.

Please refer to the third, sixth and seventh figures, the card edge connector 100 is provided with a protrusion 15 between the covering portion 34 and the insertion surface 101 of the insulating body 1 to make the covering portion 34 and A gap is formed between the insertion surfaces 101. The protrusion 15 pushes up against the covering portion 34 of the metal shell 3 to increase the vertical distance between the covering portion 34 and the insertion surface 101 of the insulating body 1. In this embodiment, the protrusion 15 is integrally formed on the insertion surface 101 of the insulating body 1, and the protrusion 15 is adjacent to the terminal groove 110 and extends along the arrangement direction of the plurality of terminal grooves 110, In other embodiments, the protrusion 15 may be integrally formed on the metal shell, or may be assembled with the metal shell or the insulating body 1. Preferably, in the transverse direction perpendicular to the longitudinal direction, with the position of the central slot 13 as the inside, the protrusion 15 is located outside the terminal groove 110. In this embodiment, since the protrusions 15 are formed to protrude upward from the top surface of the side walls 11 and are only provided on the longitudinal ends of each side wall 11, the protrusions 15 are intermittently arranged, and only part of the terminal grooves 110 are provided next to them. There is the protrusion 15. Of course, in other embodiments, the protrusion 15 may be continuously provided on the top surface of each side wall 11, that is, the protrusion 15 is provided beside each terminal slot 110. The arrangement of the protrusion 15 can increase the height difference between the covering portion 34 of the metal shell 3 and the free end 220 of the conductive terminal 2 so as to prevent the conductive terminal 2 from being squeezed by the electronic card 6 and the free end 220 of the conductive terminal 2 protruding upward for insulation The insertion surface 101 of the main body 1 overlaps with the cover 34.

Please refer to the second, fourth and fifth figures, the side wall 11 of the insulating body 1 is provided with a receiving groove 112 recessed from the insertion surface 101 adjacent to the key button 14, and the side wall 11 is adjacent The bottom surface area of the key buckle 12 is provided with a step portion 113 slightly higher than the mounting surface 102 of the insulating body 1, the upper buckle portion 31 of the metal shell is buckled in the receiving groove 112, and the lower buckle portion 32 is oppositely buckled on the step 113 of the side wall 11. The end wall 12 of the insulating body 1 is provided with a groove 120 recessed inward from the end face in the longitudinal direction. The groove 120 is located below the mounting groove 160 of the tower portion 16 and is connected to the mounting groove. 160 connected. The side buckling parts 33 of the two metal shells are clamped in the groove 120, and the width of the groove 120 is slightly larger than the sum of the thicknesses of the two side buckling parts 33, so as to facilitate the two metal The shell is located at the side buckle part 33 at the same end wall 12 as a buckle. Therefore, the upper buckling portion 31 and the lower buckling portion 32 are respectively buckled on the insertion surface 101 and the mounting surface 102 of the side wall 11, and the two side buckling portions 33 are respectively buckled on the insulating surface. The end face of the end wall 12 of the body 1.

Please refer to Figures 6 to 8, the central slot 13 is provided with two steps 131 at both ends of the longitudinal direction, and a groove bottom 132 is formed between the two steps 131 which is lower than the step 131. .

Please refer to Figure 7. In this embodiment, the vertical thickness of the covering portion 34 of the metal shell 3 is 0.20 mm, and the vertical height of the protrusion 15 is 0.20 mm. Therefore, compared to the existing card edge connector product without the above-mentioned covering portion 34 and the protrusion 15, the vertical height of the card edge connector 100 in this embodiment is increased by 0.40 mm correspondingly, and the groove bottom 132 reaches the height of the card edge connector 100 The vertical height of the upper surface is correspondingly increased by 0.4mm. In order to avoid the risk that the base 60 of the electronic card 6 interferes with the metal housing 3 and the connector 61 cannot be fully inserted, the inventor of this creation broke the industry definition (SO-016_Rev.B) "DDR4 connector slot bottom to seat The maximum distance of the bottom is 2.40mm". The distance L2 from the groove bottom 132 to the seat bottom 103 of the card edge connector 100 in this embodiment is set to 2.65mm, so as to achieve the premise of not changing the external dimensions of the insulating body 1 At the same time, ensure that the distance L1 from the bottom 132 of the groove to the upper surface of the cover portion 34 of the metal shell 3 does not exceed 4.00mm. In this embodiment, L1 is set to 3.95mm (the minimum height of the plug-in portion 61 of the electronic card 6 defined by the industry is 4.00 mm). This method does not need to change the shape and structure of the conductive terminal 2 and the terminal slot 110 in the existing product, only the The vertical height of the bottom 132 of the central slot 13 greatly facilitates the development of new products. Therefore, the vertical distance L1 from the groove bottom 132 of the card edge connector 100 to the upper surface of the metal shell 3 in the present invention is not more than 4.00 mm, and the distance between the groove bottom 132 and the seat bottom 103 of the insulating body 1 The vertical distance L2 is greater than 2.40 mm.

The card edge connector 100 of the present invention adds a metal shell 3 to the outside of the insulating body 1, so that the card edge connector 100 still has a certain strength under the premise of having a slender insulating body 1. The metal shell 3 effectively improves the card edge The strength and stability of the connector 100. The upper buckling portion 31, the lower buckling portion 32, and the side buckling portion 33 of the metal shell 3 are respectively buckled around the side wall 11, so that no warpage occurs when the metal shell is stably installed on the insulating body 1 Possible. The upper buckling portion 31 and the lower buckling portion 32 of the metal shell are respectively buckled on the side wall 11 adjacent to the key buckle 14 area, so that the buckle portion can be buckled on the insulating body 1 without contacting the terminal groove 110 The arrangement has an impact.

It should be pointed out that the above descriptions are only the best embodiments of the present invention, not all of them. Any equivalent changes made by those skilled in the art to the technical solutions of the present invention by reading the description of the present invention are all of the present invention. Covered by the request.

101: Insert face

103: seat bottom

110: terminal slot

13: Central slot

131: steps

132: Slot Bottom

15: raised

21: Holding part

22: Contact

220: free end

23: Welding Department

34: cover part

Claims (9)

A card edge connector includes: a longitudinally long insulating body provided with a mounting surface and an insertion surface opposite to the mounting surface; the insulating body is recessed from the insertion surface with a longitudinally long central slot; The insulating body is recessed from the insertion surface with a plurality of terminal slots located on both sides of the central slot; a plurality of conductive terminals are accommodated in the insulating body, and the conductive terminals include a holding part fixed to the insulating body An elastic contact portion extending from one end of the holding portion, the contact portion being correspondingly received in the terminal slot and protruding into the central slot; and a metal casing for shielding the insulating body; wherein the metal casing includes at least A cover part that partially covers the terminal groove, a protrusion is provided between the insulating body and the cover part to form a gap between the cover part and the insertion surface, and the protrusion is integrally formed on the insulating body The protrusion extends along the arrangement direction of the plurality of terminal grooves, and each terminal groove is provided with the protrusion or part of the terminal groove is provided with the protrusion. The card edge connector according to claim 1, wherein on the insertion surface of the insulating body, the central slot is located inside, the protrusion is adjacent to the terminal groove, and the protrusion is opposite It is arranged outside the terminal groove. The card edge connector according to claim 1, wherein the contact portion of the conductive terminal is provided with a free end, the free end faces the central slot and abuts on the wall of the terminal slot, the free end The end extends along the terminal groove to the insertion surface of the insulating body without exceeding the insertion surface. The card edge connector according to claim 1, wherein the insulating body is provided with two oppositely arranged side walls and two end walls connecting the two side walls, and the metal shell includes two independent metal parts respectively attached to the outside of the side walls. The casing, each metal casing is provided with the covering part. The card edge connector according to claim 4, wherein each metal shell is further provided with a longitudinally long main body, an upper buckle portion bent and extended from the top edge of the main body, and a bottom edge bent from the main body Extended lower buckle and two side buckles bent and extended from both ends of the main body The upper and lower buckling portions are respectively buckled on the top surface and the bottom surface of the side wall, and the two side buckling portions are respectively buckled on the end wall of the insulating body. The card edge connector according to claim 5, wherein the upper surface of the upper buckle portion is flush with the upper surface of the cover portion. The card edge connector according to claim 5, wherein the central slot is provided with a key buckle connected to two side walls, and the upper and lower buckling parts are buckled in the side wall adjacent to the key buckle . The card edge connector according to claim 7, wherein the side wall of the insulating body is provided with a receiving groove recessed from the insertion surface in an area adjacent to the key buckle, and the upper buckle portion of the metal shell is buckled at the In the receiving groove, the lower buckle portion is oppositely buckled on the bottom surface of the side wall, the bottom surface of the side wall is higher than the mounting surface of the insulating body, and the side wall is provided in an area adjacent to the bottom surface of the key button. There is a step portion slightly higher than the mounting surface of the insulating body, the lower buckling portion is buckled on the step portion, and the end wall of the insulating body is provided with a groove recessed inward from the end surface in the longitudinal direction, The side buckling parts of the two metal shells are clamped in the groove. The card edge connector according to claim 1 or 8, wherein the central slot is provided with two steps at both ends of the longitudinal direction, and a relatively low groove bottom is formed between the two steps, so The distance from the bottom of the groove to the upper surface of the metal shell is not greater than 4.00 mm, a seat bottom is formed at the bottom of the insulating body, and the distance from the bottom of the groove to the seat bottom of the insulating body is greater than 2.40 mm.

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