TWM458010U - Electrical card connector - Google Patents

Description

Electronic card connector

This creation is about an electronic card connector.

The electronic device can be provided with an electrical connector to connect an electronic card or a docking connector. Electrical connectors within the electronic device are typically designed to prevent the electronic card or docking connector from being improperly installed. By way of example, a conventional card connector 100 is disclosed in the Republic of China Patent Publication No. 387622 (corresponding US Patent Publication No. US Pat. No. 6,068,516). The conventional card connector 100 includes a cover 101. The cover 101 is disposed in a housing 102 and has an identification mechanism 103. The identification mechanism 103 extends downward from the top of the cover 101 into the electronic card slot, thereby preventing the electronic card from being inserted incorrectly.

As shown in FIG. 2, the identification mechanism 103 is formed like a cantilever. The identification mechanism 103 extends downwardly and forwardly such that the front edge 1033 of the identification mechanism 103 can touch the leading edge of the erroneously inserted electronic card 104. The identification mechanism 103 is further made to be inclined toward one side thereof. In detail, the identification mechanism 103 has two side edges 1031 and 1032, wherein the side edges 1031 are higher than the side edges 1032. Additionally, the sides 1031 can be shorter than the sides 1032. Due to the above structural features, when the electronic card 104 is mounted in the correct manner, the upper edge of the bevel 1041 can push the identification mechanism 103 upward, so that the identification mechanism 103 does not block the insertion of the electronic card 104. In contrast, the right angle corner of the electronic card 4 installed in an incorrect manner is blocked by the front edge 1033 of the identification mechanism 103 to prevent the electronic card 4 from being inserted.

The front edge 1033 of the identification mechanism 103 is freely movable, and has no support on both sides, so that the tolerance generated during manufacturing and the external force during production The resulting deformation or deformation caused by the touch of the card may cause the front edge 1033 to shift. As a result, if the front edge 1033 is offset at an excessive position, the identification mechanism 103 will be unable to block the electronic card 4 that is mounted in an incorrect manner from being inserted. Furthermore, if the front edge 1033 is offset in an excessively low position, the identification mechanism 103 blocks the electronic card 4 mounted in the correct manner from being inserted.

Further, the identification mechanism 103 is formed to be inclined to one side thereof and to have both sides of different lengths. The identification mechanism 103 having such a complicated structure is not easy to manufacture, and requires complicated tools and processes to increase manufacturing cost and time.

Further, when an attempt is made to insert the electronic card 4 which is pressed against the front edge 1033 of the cantilever type identification mechanism 103 in an incorrect manner with a large force, the identification mechanism 103 is easily deformed or bent. Once the identification mechanism 103 is deformed, the identification mechanism 103 will no longer be able to block the insertion of the electronic card 4 installed in an incorrect manner.

In view of the foregoing, the present disclosure discloses a new electronic card connector.

One of the aims of the present invention is to provide an electronic card connector having an element that prevents the electronic card from being improperly mounted and that is easy to manufacture.

Another object of the present invention is to provide an electronic card connector, wherein the electronic card connector has an element that prevents the electronic card from being improperly mounted, and the component can be manufactured at a lower cost and with fewer process steps. .

Another object of the present invention is to provide an electronic card connector having an element that prevents the electronic card from being improperly mounted and that is less susceptible to deformation.

Another object of the present invention is to provide an electronic card connector having an element that prevents the electronic card from being improperly mounted and that can be made consistently or stably.

For the foregoing purposes, an embodiment of the present disclosure discloses an electronic card connector. The electronic card connector is used for accommodating an electronic card. The electronic card may include an insertion end and an oblique angle, wherein the oblique angle is formed on the insertion end. The electronic card connector includes an insulative housing, a plurality of terminals, and a metal housing. The plurality of terminals are fixed to the insulative body. The metal housing and the insulative housing together form a first sidewall surface, a second sidewall surface, a slot and a socket, wherein the first sidewall surface and the second sidewall surface define a slot, and the socket communicates with the slot, wherein the electronic card The insertion end is inserted into the slot via the socket. The metal housing includes a top plate and a resilient piece. The elastic piece includes a first end and a second end, wherein the first end is fixed to the top plate, and the second end is opposite to the first end. The elastic piece may extend obliquely from the top plate along the first side wall surface to the second side wall surface. The second end can be a free end. One of the distance between the first end and the first side wall surface is greater than the width of the insertion end of the electronic card.

In one embodiment, the insulative housing includes a first side wall and a second side wall, wherein an inner wall surface of the first side wall constitutes a first side wall surface, and an inner wall surface of the second side wall forms a second side wall surface. The second side wall may further include a notch recessed downwardly from the top of the second side wall and a stop surface located in the notch facing the socket of the electronic card connector. The stop surface stops the movement of the shrapnel to prevent the shrapnel from moving excessively backward.

In one embodiment, the second side wall includes a support surface located within the notch, wherein the support surface limits the downward movement of the shrapnel.

In an embodiment, the electronic card connector further includes a detection switch, The middle detection switch is placed behind the shrapnel.

In an embodiment, the detection switch is a normally closed switch. The detecting switch can include a fixing member and an elastic member. The elastic member can contact the fixing member in a normal state. The elastic member is a bendable release member. The elastic member may include an end, an edge and an abutting portion, wherein the abutting portion extends from the edge, and the abutting portion may be disposed near the end and bent into the slot.

In one embodiment, the shrapnel is a continuous strip of sheet.

In an embodiment, the metal housing further comprises at least one slit, wherein at least one slit is formed on the top plate and extends along one side of the elastic piece.

In an embodiment, the metal casing may further comprise two slits, and the elastic piece may comprise a flat portion, wherein the flat portion extends between the two slits.

In an embodiment, the metal housing further includes a stop portion, wherein the stop portion is bendable downward from the top plate of the metal housing and disposed relative to the socket.

In an embodiment, the insulative housing may further include a stopping portion, wherein the blocking portion is disposed corresponding to the oblique angle of the electronic card.

The electronic card connector of the foregoing embodiment has a spring piece that prevents the electronic card from being improperly mounted, wherein the elastic piece has the advantages of being easy to manufacture and not easily deformed.

The embodiments of the present creation are detailed below in conjunction with the drawings.

FIG. 3 is a perspective view of the electronic card connector 1 according to an embodiment of the present invention. FIG. 4 is a perspective exploded view of the electronic card connector 1 of the embodiment. FIG. 5 is a perspective view of one embodiment of the present invention, illustrating the insertion of the electronic card 2 into the electronic card connector 1. 6 is a schematic diagram of an embodiment of the present creation, It is exemplified that the electronic card 2 is being inserted into the metal casing 13. Referring to Figures 3, 4 and 6, the electronic card connector 1 includes an insulative housing 11, a plurality of terminals 12, and a metal housing 13. The plurality of terminals 12 are fixed to the insulative housing 11. The metal housing 13 can be mounted on the insulative housing 11. The plurality of terminals 12 can be insert molded in the insulative housing 11. As shown in FIG. 3, the metal housing 13 can form a first sidewall surface 14, a second sidewall surface 15, a slot 16, and a socket 17 together with the insulative housing 11. The slot 16 can receive or partially receive the electronic card 2. The first side wall surface 14 and the second side wall surface 15 partially define the slot 16. The first side wall surface 14 and the second side wall surface 15 are opposite. The socket 17 is in communication with the slot 16. The electronic card 2 can be inserted into the slot 16 via the socket 17.

As shown in FIG. 3 and FIG. 6, the electronic card connector 1 can be plugged into the electronic card 2, wherein the electronic card 2 can include an insertion end 21 and an oblique angle 22, as shown in FIG. When the electronic card 2 is inserted, the insertion end 21 is the first insertion front end. A bevel 22 can be formed on the insertion end 21.

Referring to FIG. 3 and FIG. 4, the metal casing 13 may include a top plate 131 and a resilient piece 132. The top plate 131 extends over the slot 16. The elastic piece 132 is fixed to the top plate 131. As shown in FIGS. 3 and 6, the elastic piece 132 extends from the top plate 131 of the metal casing 13 and may include a first end 1321 and a second end 1322. The first end 1321 can be coupled to the top plate 131. The second end 1322 can be opposite the first end 1321. The second end 1322 can be within the slot 16 and can be a free end. The elastic piece 132 may extend in a direction from the first side wall surface 14 to one of the second side wall surfaces 15, as shown in FIG. The elastic piece 132 can extend downward and toward one side of the electronic card connector 1, so that the elastic piece 132 can be easily fabricated, and the currently used stamping die can be produced with a housing having the aforementioned elastic piece as long as it is slightly modified.

In an embodiment, the elastic piece 132 may be formed by punching and bending a portion of the metal casing 13.

In an embodiment, the elastic piece 132 may be a straight type of sheet.

Further, the elastic piece 132 is used to allow the electronic card 2 mounted in the correct manner to be inserted, and the electronic card 2 mounted in an incorrect manner can be blocked from being inserted. To this end, as shown in FIGS. 3 and 6, the distance W ₂ between the first end 1321 and the first side wall surface 14 is designed to be larger than the width W _{1 of the} insertion end 21. Thus, when the electronic card 2 is inserted, the insertion end 21 does not contact the elastic piece 132, and when the contact point between the edge of the oblique angle 22 of the electronic card 2 and the elastic piece 132 moves along the elastic piece 132, the elastic piece 132 can be gradually and Easily move up and let the electronic card 2 be inserted inward.

Referring to FIGS. 3, 7, and 8, when the electronic card 2 is not properly mounted, the end opposite to the insertion end 21 formed with the bevel 22 will touch the elastic piece 132 facing the electronic card when the electronic card 2 is inserted. One side of the socket 17 of the device 1 is 1323, so that the movement of the electronic card 2 is blocked, so that the electronic card 2 cannot be inserted.

The elastic piece 132 extends from the top plate 131 of the metal casing 13, so that the top plate 131 can serve as a basis for positioning the elastic piece 132. Moreover, since the metal casing 13 can be accurately fabricated, the position of the elastic piece 132 or the position of the elastic piece 132 on the side of the elastic piece 2 for blocking the improperly mounted electronic card 2 can be uniformly produced at the time of manufacture. As such, the problem of being unable to block an electronic card installed in an incorrect manner due to tolerances in the manufacture of electrical connectors can be avoided.

Further, as shown in FIG. 7, one end of the side edge 1323 extends adjacent to the top plate 131 of the metal casing 13, so that the position of the end is fixed, and the position of the end is not easily changed when the elastic piece 132 is subjected to a force. Thus, the entire side of the edge 1323 The fact that the function of the shrapnel 132 is disabled due to the offset does not occur.

Furthermore, comparing the conventional electrical connector that blocks the improperly mounted electronic card 2 at the end of the component, since the elastic piece 132 extends transversely to the insertion direction of the electronic card 2, the elastic piece 132 blocks the incorrectly mounted electronic body with one side thereof. The card 2, such that when the user wants to force the improperly installed electronic card 2 to insert a large force on the electronic card 2, the elastic piece 132 can withstand the large force exerted on the electronic card 2 without being easily deformed.

FIG. 9 is a perspective view of a first embodiment of the present invention, which illustrates a mini SIM card and an electronic card connector 1 mounted on an electronic device. In one embodiment, the present invention can be implemented in an electronic card connector, wherein the electronic card connector can house a mini SIM card, and can include a blocking electronic card insertion and a stop for insertion termination. In order to accommodate the electronic card and to have the function of blocking the insertion of the electronic card, extra space is required, which makes the electronic card connector larger. In some applications, a small electronic device (eg, a cell phone or other portable electronic device) needs to be able to plug into the smaller electronic card connector 1 of the mini SIM card. To reduce the size, the electronic card connector 1 is designed to have no stop, so that it can be removed to accommodate the space required to block the mini SIM card. Since there is no component that blocks the insertion of the electronic card, the user does not know whether the electronic card is properly inserted. In order to overcome the disadvantages of the point and provide a method for preventing the insertion of the electronic card, the electronic card connector 1 can be disposed at a position close to one side wall or a protrusion of the electronic device, with the side wall or the protrusion as the stopping portion 3 .

Referring to FIG. 4 , the insulative housing 11 includes a first sidewall 111 and a second sidewall 112 , wherein the first sidewall 111 has an inner wall facing the slot 16 . And the second side wall 112 also has an inner wall surface facing the slot 16. In the embodiment of FIG. 4, the inner wall surface of the first side wall 111 constitutes the first side wall surface 14, and the inner wall surface of the second side wall 112 constitutes the second side wall surface 15. In another embodiment, the electronic card connector 1 can include an insulative body that does not have the aforementioned side walls, but the metal housing 13 includes two opposing side walls. In this case, the inner side faces of the side walls of the metal casing 13 constitute the first side wall surface 14 and the second side wall surface 15, respectively.

FIG. 10 is a perspective view of the electronic card connector 1' according to an embodiment of the present invention. FIG. 11 is a perspective exploded view of the electronic card connector 1' according to an embodiment of the present invention. Referring to Figures 10 and 11, the electronic card connector 1' includes an insulative housing 11, a plurality of terminals 12, and a metal housing 13'. The plurality of terminals 12 are fixed to the insulative housing 11. The metal housing 13' can be mounted on the insulative housing 11. The metal casing 13' may include a top plate 131' and a resilient piece 132'. The elastic piece 132' includes a first end 1321 and a second end 1322, wherein the first end 1321 is coupled to the top plate 131', and the second end 1322 is opposite to the first end 1321. The metal casing 13' may further include at least one slit 133, and at least one slit 133 is formed on the top plate 131' and along one side of the elastic piece 132', so that the length of the elastic piece 132' may be increased, so that the elastic piece 132' is further Flexible.

In the present embodiment, the top plate 131' of the metal casing 13' includes two slits 133. The elastic piece 132' includes a flat portion and an inclined portion. The flat portion extends between the two slits 133, and the inclined portion extends downward from the flat portion and toward one side of the electronic card connector 1' to block the insertion of the improperly mounted electronic card.

FIG. 12 is a perspective view of the electronic card connector 5 of another embodiment of the present invention. FIG. 13 is a perspective exploded view of the electronic card connector 5 of another embodiment of the present invention. Referring to Figures 12 and 13, the electronic card connector 5 includes a The edge body 51, the plurality of terminals 52, and a metal casing 53. The plurality of terminals 52 are fixed to the insulative housing 51. The metal housing 53 can be mounted on the insulative housing 51. The metal housing 53 and the insulative housing 51 together form a first side wall surface 54, a second side wall surface 55, a slot 56, and a socket 57. The first side wall surface 54 and the second side wall surface 55 define a slot 56. The socket 57 is in communication with the slot 56.

FIG. 14 is a schematic view of an embodiment of the present invention, illustrating the insertion of the electronic card 6 into the electronic card connector 5. Referring to Figures 12 through 14, the electronic card 6 can be inserted into the slot 56 via the jack 57, as shown in Figure 14. The electronic card 6 can include an insertion end 61 and a beveled corner 62, wherein the beveled corner 62 is formed on the insertion end 61. Correspondingly, the electronic card connector 5 further includes a spring piece 532. The elastic piece 532 includes a first end 5321 and a second end 5322, wherein the first end 5321 is fixed to the top plate 531 of the metal casing 53, and the second end 5322 is opposite to the first end 5321. The second end 5322 can be a free end. The elastic piece 532 can be formed by bending a portion punched out from the metal casing 53. The elastic piece 532 may extend from the first side wall surface 54 to the second side wall surface 55. If the wrong end of the electronic card 6 is first inserted, the spring 532 blocks the insertion of the electronic card 6. The elastic piece 532 can be formed such that the insertion end 61 does not touch the elastic piece 532, and the oblique angle 62 gradually pushes the elastic piece 532 upward to allow the electronic card 6 to be fully inserted.

In an embodiment, the elastic piece 532 is a straight type of sheet.

As shown in FIG. 13 , the insulative housing 51 includes a first side wall 511 and a second side wall 512 , wherein the inner wall surfaces of the first side wall 511 and the second side wall 512 serve as a first side wall surface 54 and a second side, respectively. Wall 55. The second side wall 512 can include a notch 513 formed by the top surface of the second side wall 512 facing downward or recessed. The tab 532 can extend into the notch 513.

Referring to FIGS. 12 and 13 , the notch 513 may include a stop surface 5131 and a support surface 5132 . The stop surface 5131 and the support surface 5132 are both included in the second side wall 512 . The stop surface 5131 can face forward. In particular, the stop surface 5131 can face the socket 57 of the electronic card connector 5. When the elastic piece 532 is unstressed, the elastic piece 532 does not come into contact with the stop surface 5131. The stop surface 5131 prevents excessive force from causing the elastic piece 532 to move excessively, thereby preventing the elastic piece 532 from being permanently deformed or damaged.

The support surface 5132 can be located below the elastic piece 532, such that the support surface 5132 can restrict the downward movement of the elastic piece 532 to prevent the elastic piece 532 from being damaged.

Referring to FIG. 13, the electronic card connector 5 can include a detection switch 58 that can be used to control the electrical conduction of the plurality of terminals 52. When the electronic card 6 is inserted, after the pads on the electronic card 6 individually contact the plurality of terminals 52, the plurality of terminals 52 can be turned on through the detecting switch 58; when the electronic card 6 is removed, the connection is made on the electronic card 6. Before the pad is separated from the plurality of terminals 52, the plurality of terminals 52 are rendered non-conductive by the detection switch 58. The abutting portion of the detecting switch 58 can be disposed behind the elastic piece 532. Thus, if the electronic card 6 is incorrectly installed, the electronic card 6 is blocked before the detecting switch 58 is abutted, so that the plurality of terminals 52 can be prevented from being turned on, thereby causing the plurality of terminals 52 to be turned on. Accidental damage.

Referring to FIGS. 12 to 14, the detecting switch 58 includes an elastic member 581 and a fixing member 582. In an embodiment, if the detecting switch 58 is a normally closed switch, the elastic member 581 is in contact with the fixing member 582 in a normal state and can be bent away from the fixing member 582.

The elastic member 581 can be a strip-shaped elastic arm. The elastic member 581 can include an abutting portion 5811. The abutment portion 5811 can extend from one edge of the resilient member 581 and be bent into the slot 56. The elastic member 581 can include an end 5813 and a fixed The end 5812, the end 5813 can move with the bending of the elastic member 581, and the fixed end 5812 can be held by the insulating body 51 and can be soldered to a circuit board. The abutment portion 5811 can be disposed adjacent the end 5813, which can have a larger force arm, allowing the elastic member 581 to be more easily bent, and allowing the electronic card 6 to be inserted more easily.

Furthermore, the main surface in one of the elastic members 581 contacts the fixing member 582. Since the abutment portion 5811 extends from one edge of the elastic member 581, when the position of the abutment portion 5811 is designed, the position of the inner main surface for contacting the fixing member 582 can be omitted.

The fixing member 582 can include a hook portion 5821 extending along a side wall of the insulative housing 51. The hook portion 5821 includes both end portions, wherein one end portion is in contact with one of the abutting portions 5822 of the elastic member 581, and the other end is fixed to the insulative housing 51 and can be soldered to the circuit board.

In an embodiment, the detection switch 58 can be a normally closed switch. In another embodiment, the detection switch 58 can be a normally open switch.

Referring to FIGS. 13 and 14, when the electronic card connector 5 is used to plug a micro SIM card, the metal housing 53 may include at least one stopper 533. The stopper 533 can be bent downward from the top plate 531 and disposed with respect to the socket 57. The stop portion 533 can serve as a fully inserted stop point and an indication of proper installation. In addition, the insulative housing 51 can include a stop portion 514 that can be disposed corresponding to the oblique angle of the electronic card 6, and the stop portion 514 can engage the bevel.

An embodiment of the present invention provides an electronic card connector including a housing disposed on an insulative housing. The housing includes a resilient piece extending transversely to the insertion direction of the electronic card, and the elastic piece prevents the electronic card from being inserted in an incorrect manner. The electronic card includes an insertion end, an oblique angle, and An end wherein the bevel is formed at the insertion end and the end is opposite the insertion end. The shrapnel is formed so as not to contact the insertion end of the electronic card, but will contact the end of the electronic card.

The technical content and technical features of the present invention are disclosed above, but those skilled in the art may still make various substitutions and modifications without departing from the spirit of the present invention based on the teachings and disclosures of the present invention. Therefore, the scope of the present invention is not limited to the embodiments disclosed, but includes various alternatives and modifications that do not depart from the present invention and are covered by the following claims.

1‧‧‧Electronic card connector

1'‧‧‧electronic card connector

2‧‧‧Electronic card

3‧‧‧stops

5‧‧‧Electronic card connector

6‧‧‧Electronic card

11‧‧‧Insulation body

12‧‧‧ Terminal

13‧‧‧Metal housing

13'‧‧‧Metal shell

14‧‧‧First side wall

15‧‧‧Second side wall

16‧‧‧Slots

17‧‧‧ socket

21‧‧‧Insert

22‧‧‧ oblique angle

51‧‧‧Insulated body

52‧‧‧terminal

53‧‧‧Metal housing

54‧‧‧First side wall

55‧‧‧Second side wall

56‧‧‧Slots

57‧‧‧ socket

58‧‧‧Detection switch

61‧‧‧Insert

62‧‧‧Bevel

100‧‧‧ card connector

101‧‧‧Shell cover

102‧‧‧ housing

103‧‧‧ Identification agency

104‧‧‧Electronic card

111‧‧‧First side wall

112‧‧‧Second side wall

131‧‧‧ top board

131'‧‧‧ top board

132‧‧‧Shrap

132'‧‧‧Shrap

133‧‧‧ slitting

511‧‧‧First side wall

512‧‧‧Second side wall

513‧‧‧ gap

514‧‧‧stops

531‧‧‧ top board

532‧‧‧Shrap

533‧‧‧stops

581‧‧‧Flexible parts

582‧‧‧Fixed parts

1031‧‧‧ side

1032‧‧‧ side

1033‧‧‧ front edge

1041‧‧‧Bevel

1321‧‧‧ first end

1322‧‧‧ second end

1323‧‧‧ side

5131‧‧‧ stop surface

5132‧‧‧Support surface

5321‧‧‧ first end

5322‧‧‧ second end

5811‧‧‧Apartment

5812‧‧‧ fixed end

End of 5813‧‧‧

5821‧‧‧ hook

5822‧‧‧Resistance

1 is a schematic diagram of a conventional card connector; FIG. 2 is an illustration of the identification mechanism of the conventional card connector of FIG. 1; FIG. 3 is a perspective view of an electronic card connector according to an embodiment of the present invention; 3 is a schematic perspective view of a connector; FIG. 5 is a perspective view of an embodiment of the present invention, illustrating an electronic card inserted into the electronic card connector; FIG. 6 is a schematic diagram of an embodiment of the present invention, illustrating that the electronic card is being inserted into the metal FIG. 7 is a schematic plan view showing an electronic card on the metal casing blocking the improperly installed electronic card; FIG. 8 is a perspective view showing the elastic piece on the metal casing blocking the improperly installed electronic card; 9 is a perspective view of an embodiment of the present invention, which illustrates a mini SIM card and an electronic card connector mounted on an electronic device; 10 is a perspective view of an electronic card connector according to an embodiment of the present invention; FIG. 11 is a perspective exploded view of an electronic card connector according to an embodiment of the present invention; FIG. 12 is a schematic diagram of an electronic card connector according to another embodiment of the present invention; FIG. 13 is a perspective exploded view of an electronic card connector according to another embodiment of the present invention; and FIG. 14 is a schematic view of an embodiment of the present invention, illustrating an electronic card inserted into an electronic card connector.

1‧‧‧Electronic card connector

11‧‧‧Insulation body

12‧‧‧ Terminal

13‧‧‧Metal housing

14‧‧‧First side wall

15‧‧‧Second side wall

16‧‧‧Slots

17‧‧‧ socket

131‧‧‧ top board

132‧‧‧Shrap

1321‧‧‧ first end

Claims (10)

An electronic card connector for accommodating an electronic card, the electronic card comprising an insertion end and an oblique angle formed on the insertion end, the electronic card connector comprising: an insulative body; a plurality of terminals Fixed to the insulative housing; and a metal housing, together with the insulative housing, forming a first sidewall surface, a second sidewall surface, a slot and a socket, wherein the first sidewall surface and the second sidewall surface define The socket is connected to the slot, wherein the insertion end of the electronic card is inserted into the slot through the socket, wherein the metal housing comprises: a top plate; and a spring piece including a first end and a first end The second end is fixed to the top plate, and the second end is opposite to the first end, wherein the elastic piece extends obliquely downward from the top plate along the first side wall surface toward the second side wall surface, and the second end is a free end, wherein a distance between the first end and the first side wall surface is greater than a width of the insertion end of the electronic card. The electronic card connector of claim 1, wherein the insulative housing comprises a first side wall and a second side wall, wherein an inner wall surface of the first side wall constitutes the first side wall surface, and the second side The inner wall of the wall constitutes the second side wall surface, wherein the second side wall comprises a notch recessed downwardly from the top surface of the second side wall and a socket located in the notch and facing the electronic card connector a stop surface that blocks the movement of the shrapnel to prevent the shrapnel from moving excessively backward. The electronic card connector of claim 2, wherein the second side wall includes a support surface located in the notch, wherein the support surface limits downward movement of the elastic piece. The electronic card connector of claim 3 further includes a detection switch, wherein the detection switch is disposed behind the elastic piece. The electronic card connector of claim 4, wherein the detecting switch is a normally closed switch, the detecting switch comprises a fixing member and an elastic member, and the elastic member contacts the fixing member in a normal state, The elastic member is bendable away from the fixing member, and the elastic member includes an end, an edge and an abutting portion extending from the edge, disposed adjacent to the end and bent and protruded into the slot. The electronic card connector according to any one of claims 1 to 5, wherein the elastic piece is a continuous strip type. The electronic card connector of claim 6, wherein the metal casing further comprises at least one slit, the at least one slit being thinly formed on the top plate and extending along one side of the elastic piece. The electronic card connector of claim 6, wherein the metal housing further comprises two slits, and the elastic piece comprises a flat portion, wherein the flat portion extends between the two slits. The electronic card connector of claim 6, wherein the metal housing further comprises a stop portion bent downward from the top plate of the metal housing and disposed relative to the socket. The electronic card connector of claim 6, wherein the insulative housing further comprises a stop portion, wherein the stop portion is disposed corresponding to the oblique angle of the electronic card.