Card connector

Abstract

The utility model discloses a card connector, which is arranged on a circuit board in an electronic product and comprises at least one insulating body, a plurality of conductive terminals, a shielding shell and a card support, the plurality of conductive terminals are fixedly arranged on the insulating body; the shielding shell is sleeved on the periphery of the insulating body, an accommodating space is defined by the shielding shell, the insulating body and the circuit board, and an elastic contact arm extending into the accommodating space is arranged on the shielding shell; the card support is arranged in the accommodating space in a manner of sliding back and forth; the card support comprises a plastic frame body and a metal frame integrally formed in the plastic frame body, the metal frame is partially exposed out of the plastic frame body, and after the card support is arranged in the containing space, the exposed part of the metal frame abuts against the elastic contact arm. Static electricity generated in the using process of the card connector can be conducted away through the shielding shell, and therefore the electrostatic effect is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to a card connector. Background Art

[0002] The card connector is an electronic component installed on the circuit board in the electronic product, and is used to realize the communication connection between the electronic card and the electronic product. The existing card connector generally includes an insulating body and a shielding shell covering the insulating body. The insulating body is made of an insulating material, and a plurality of conductive terminals for contacting the electronic card are fixed thereon, and each of the conductive terminals is welded and fixed on the circuit board. The shielding shell is made of a metal material, covers the insulating body and is welded on the circuit board, and the shielding shell and the insulating body together form a receiving space for receiving the electronic card.

[0003] In order to facilitate the insertion and removal of the electronic card, the card connector also includes a card tray for carrying the electronic card to be inserted into the receiving space. In order to reduce manufacturing costs, most of the existing card trays on the market are made of metal with insulating plastic wrapped around it. When the card tray is inserted into or removed from the receiving space, static electricity carried by the human body and the sliding friction of the card tray generate static electricity. Since the outer surface of the card tray is covered with molded insulating plastic, the static electricity cannot be conducted away, thereby damaging the electronic components inside the electronic card. Especially during the process of inserting or removing the card, it is more likely to be transmitted along the electronic card to the conductive terminal group inside the connector, causing the electronic card signal transmission to be interrupted or failed, and may even cause a short circuit between the conductive terminals, damaging the card connector and the electronic components inside the electronic product. Utility Model Content

[0004] Based on this, in order to solve the above problems, a card connector is provided which can conduct away the static electricity generated during the use of the card connector, thereby eliminating the static electricity effect, ensuring the stability of electronic card signal transmission and avoiding damage to the card connector and electronic components inside the electronic product.

[0005] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0006] A card connector is installed on a circuit board in an electronic product, comprising at least one insulating body, a plurality of conductive terminals, a shielding shell and a card holder; the plurality of conductive terminals are fixedly mounted on the insulating body and electrically connected to the circuit board; the shielding shell is sleeved on the outer periphery of the insulating body and fixedly mounted on the circuit board, a receiving space is formed between the shielding shell, the insulating body and the circuit board, and the shielding shell is provided with an elastic contact arm extending into the receiving space; the card holder is provided with at least one card receiving slot, and the card holder can be slidably mounted in the receiving space forwards and backwards; the card holder comprises a plastic frame and a metal frame integrally formed in the plastic frame, the metal frame is partially exposed from the plastic frame, and after the card holder is mounted in the receiving space, the exposed portion of the metal frame abuts against the elastic contact arm.

[0007] In one embodiment, the shielding shell includes a top plate, which is arranged above the insulating body and the card holder. A grounding plate opening is opened on one side of the top plate. The elastic contact arm has an elastic portion that extends backward and then backward and downward from the front side edge of the grounding plate opening, and the end of the elastic portion is connected to an abutment portion.

[0008] In one embodiment, the metal frame includes two side panels extending forward and backward and arranged horizontally, a front side panel connected to the front end edges of the two side panels, and a rear side panel connected to the rear end edges of the two side panels. The upper surface of one of the two side panels is provided with a convex portion protruding from the plastic frame, and the convex portion abuts against the elastic contact arm.

[0009] In one embodiment, a widened plate extends inwardly from the middle of the inner edge of the side plate provided with the protrusion, and the protrusion is provided at the connection between the widened plate and the side plate.

[0010] In one of the embodiments, the insulating body includes a first insulating body and a second insulating body arranged front to back along the sliding direction of the card tray; the plurality of conductive terminals include a plurality of first conductive terminals and a plurality of second conductive terminals, and the first conductive terminals are fixed on the first insulating body in pairs along both sides of the sliding direction of the card tray; the second conductive terminals are fixed on the second insulating body in pairs along both sides of the sliding direction of the card tray; and the card tray is provided with a first card receiving slot and a second card receiving slot respectively at the first insulating body and the second insulating body.

[0011] In one embodiment, each of the first conductive terminals has a first retaining portion fixed inside the first insulating body, a first welding portion connected to the first retaining portion and extending out of the first insulating body, two first extension arms connected to the first retaining portion at intervals and extending obliquely upward away from the first insulating body, and a first contact portion formed by the two first extension arms intersecting at a high point.

[0012] In one embodiment, each of the second conductive terminals has a second retaining portion fixed inside the second insulating body, a second welding portion connected to the second retaining portion and extending out of the second insulating body, two second extension arms connected to the second retaining portion at intervals and extending obliquely upward in a direction away from the second insulating body, and a second contact portion formed by the two second extension arms intersecting at a high point.

[0013] In one of the embodiments, an extension groove connected to the first card receiving groove is provided on the card tray behind the first card receiving groove; the insulating body also includes a third insulating body, and the third insulating body is disposed in the extension groove; the plurality of conductive terminals include a plurality of third conductive terminals, and each of the third conductive terminals is arranged horizontally and fixed on the third insulating body.

[0014] In one embodiment, each of the third conductive terminals has a third retaining portion with both ends fixed inside the third insulating body, a third contact portion connected to the third retaining portion and bent upward in the middle to form an arch shape, and each of the third retaining portions is connected to a third welding portion.

[0015] In one embodiment, it further includes a detection terminal having a terminal contact portion extending into the receiving space; the shielding shell is connected to a detection sheet extending into the receiving space, and the terminal contact portion can elastically abut against the detection sheet.

[0016] As described above, the card connector of the utility model sets a portion of the metal frame of the card holder to expose the plastic frame, and sets an elastic contact arm extending into the receiving space on the top plate of the shielding shell. When the card holder is installed in a preset position of the receiving space, the exposed portion of the metal frame abuts against the elastic contact arm, and the static electricity generated by the card connector during use is conducted away through the shielding shell, thereby eliminating the static electricity effect, ensuring the stability of the electronic card signal transmission, and avoiding damage to the card connector and the electronic components inside the electronic product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of an embodiment of the card connector of the utility model;

[0018] Figure 2 for Figure 1 an exploded perspective view of the illustrated card connector;

[0019] Figure 3 for Figure 1 Another exploded perspective view of the card connector;

[0020] Figure 4 for Figure 1 A schematic diagram of the structure of the shielding shell, card ejection mechanism and detection terminal of the card connector when the card tray is not inserted;

[0021] Figure 5 for Figure 1 a perspective view of the conductive terminals of the illustrated card connector;

[0022] Figure 6 for Figure 1 A three-dimensional view of the conductive terminals of the card connector being installed in an insulating body;

[0023] Figure 7 for Figure 1 Exploded perspective view of the card tray of the card connector shown.

[0024] Reference numerals:

[0025] 100, card connector; 1, insulating body; 11, first insulating body; 111, first side wall; 112, second side wall; 113, first retaining wall; 12, second insulating body; 121, third side wall; 122, fourth side wall; 123, second retaining wall; 13, third insulating body; 131, fifth side wall; 132, sixth side wall; 133, third retaining wall; 2, conductive terminal; 21, first conductive terminal; 211, first retaining portion; 212, first welding portion; 213, extension arm; 214, first contact portion; 22, second conductive terminal; 221, second retaining portion; 22 2. second welding portion; 223. second extension arm; 224. second contact portion; 23. third conductive terminal; 231. third holding portion; 232. third welding portion; 233. third contact portion; 3. shielding shell; 31. top plate; 32. first side plate; 321. first support plate; 322. first fixing pin; 33. second side plate; 331. third support plate; 34. first opening; 341. second support plate; 35. second opening; 351. fourth support plate; 352. second fixing pin; 36. elastic contact arm; 361. elastic portion; 362. abutment portion; 37. grounding plate opening; 38 1. First rear plate; 382. Second rear plate; 383. First holding plate; 384. Third rear plate; 385. Second holding plate; 386. Third opening; 39. Detection plate; 301. Push rod receiving slot; 302. First slideway; 303. Second slideway; 4. Card tray; 41. Plastic frame; 411. First frame; 412. Second frame; 413. Third frame; 414. Fourth frame; 415. Fifth frame; 416. First slide plate; 417. Second slide plate; 418. Stop plate; 42. Metal frame; 421. Side plate; 422. Front side plate; 423. Rear side plate; 424 , middle plate; 425, convex part; 426, widening plate; 401, first card receiving slot; 402, second card receiving slot; 403, extension slot; 43, first card support plate; 44, second card support plate; 45, anti-fool plate; 5, card ejection mechanism; 51, insulating fixed block; 511, rotating shaft; 52, cam; 521, pushing part; 522, driving part; 53, fixing frame; 54, push rod; 541, holding slot; 542, blocking part; 6, detection terminal; 61, terminal holding part; 62, terminal welding part; 63, terminal contact part; 64, terminal abutting part; 65, insulating wear-resistant block; 80, receiving space. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be understood that the terms "length", "width", "top", "bottom", "inside", "outside", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly stipulated and limited, the first feature being "on" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them.

[0029] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0030] See also Figures 1 to 3 The card connector 100 of the utility model is installed on a circuit board (not shown) in an electronic product, and includes at least one insulating body 1, a plurality of conductive terminals 2, a shielding shell 3, a card tray 4, a card ejection mechanism 5 and a detection terminal 6. The plurality of conductive terminals 2 are fixed on the insulating body 1 and electrically connected to the circuit board. The shielding shell 3 is made of metal material, and the shielding shell 3 is sleeved on the outer periphery of the insulating body 1 and fixed on the circuit board. A receiving space 80 is formed between the shielding shell 3, the insulating body 1 and the circuit board. The card tray 4 is slidably mounted in the receiving space 80.

[0031] See also Figure 1 and Figure 2 In this embodiment, the insulating body 1 includes a first insulating body 11, a second insulating body 12 and a third insulating body 13 which are arranged in a front-to-back manner along the sliding direction of the card tray 4.

[0032] See also Figure 2 and Figure 6The first insulating body 11 is in a rectangular frame shape, and includes a first side wall 111 and a second side wall 112 extending forward and backward and arranged in a transverse direction. A first retaining wall 113 is connected to both end edges of the first side wall 111 and the second side wall 112, and a first retaining wall 113 is also connected in the middle of the first side wall 111 and the second side wall 112.

[0033] Please continue reading Figure 2 and Figure 6 In this embodiment, the second insulating body 12 has the same shape as the first insulating body 11, and the second insulating body 12 is also in a rectangular frame shape. In some other embodiments, the second insulating body 12 may also be configured to have a shape different from that of the first insulating body 11. The second insulating body 12 includes a third side wall 121 and a fourth side wall 122 extending forward and backward and arranged in a transverse direction. A second retaining wall 123 is connected to both end edges of the third side wall 121 and the fourth side wall 122, and a second retaining wall 123 is also connected in the middle of the third side wall 121 and the fourth side wall 122.

[0034] Please continue reading Figure 2 and Figure 6 The third insulating body 13 is in a rectangular frame shape and includes a fifth side wall 131 and a sixth side wall 132 extending forward and backward and arranged in a transverse direction. A third retaining wall 133 is connected to both ends of the fifth side wall 131 and the sixth side wall 132.

[0035] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 The plurality of conductive terminals 2 include a plurality of first conductive terminals 21, a plurality of second conductive terminals 22, and a plurality of third conductive terminals 23. The first conductive terminals 21 are fixedly mounted on the first insulating body 11 along two opposite sides of the sliding direction of the card tray 4. In this embodiment, the first conductive terminals 21 are integrally formed with the first insulating body 11.

[0036] Each of the first conductive terminals 21 comprises a first retaining portion 211 fixed inside the first insulating body 11, a first welding portion 212 connected to the first retaining portion 211 and extending out of the first insulating body 11, two first extension arms 213 connected to the first retaining portion 211 at intervals and extending upward in a direction away from the first insulating body 11, and a first contact portion 214 formed by the intersection of the two first extension arms 213 at a high point. In this embodiment, the plurality of first conductive terminals 21 include six first conductive terminals 21 arranged opposite to each other in pairs, wherein the first retaining portions 211 of three first conductive terminals 21 are fixed in the first side wall 111, and the first retaining portions 211 of the other three first conductive terminals 21 corresponding thereto are fixed in the second side wall 112. Each of the first conductive terminals 21 comprises three first welding portions 212, wherein two of the first welding portions 212 are respectively fixed at the front and rear ends of the first retaining portion 211 and are located on one side adjacent to each other. The other first soldering portion 212 is fixed on the first holding portion 211 and disposed between the two first extension arms 213. Each of the first soldering portions 212 is soldered on the circuit board and electrically connected to the circuit board.

[0037] The second conductive terminals 22 are fixedly mounted on the second insulating body 12 along two opposite sides of the sliding direction of the card tray 4. In this embodiment, the second conductive terminals 22 are integrally formed with the second insulating body 12.

[0038] Each of the second conductive terminals 22 comprises a second retaining portion 221 fixed inside the second insulating body 12, a second welding portion 222 connected to the second retaining portion 221 and extending out of the second insulating body 12, two second extension arms 223 connected to the second retaining portion 221 at intervals and extending upward in a direction away from the second insulating body 12, and a second contact portion 224 formed by the intersection of the two second extension arms 223 at a high point. In this embodiment, the plurality of second conductive terminals 22 include six second conductive terminals 22 arranged opposite to each other in pairs, wherein the second retaining portions 221 of three second conductive terminals 22 are fixed in the third side wall 121, and the second retaining portions 221 of the other three second conductive terminals 22 corresponding thereto are fixed in the fourth side wall 122. Each of the second conductive terminals 22 comprises three second welding portions 222, wherein two second welding portions 222 are respectively fixed at the front and rear ends of the second retaining portion 221 and are located on one side adjacent to each other. The other second soldering portion 222 is fixed on the second holding portion 221 and disposed between the two second extension arms 223. Each of the second soldering portions 222 is soldered on the circuit board and electrically connected to the circuit board.

[0039] The third conductive terminals 23 are arranged transversely and fixed on the third insulating body 13. Specifically, the third conductive terminals 23 each have a third holding portion 231 with two ends fixed inside the third insulating body 13, a third contact portion 233 connected to the third holding portion 231 and bent upward in the middle to form an arch shape, and a third welding portion 232 is connected to each third holding portion 231. In this embodiment, the third conductive terminals 23 are integrally formed with the third insulating body 13. The third holding portions 231 extend forward and backward and are arranged transversely, and the front and rear ends of the third holding portions 231 are fixed in a third holding wall 133, and the front and rear ends of the third holding portions 231 are connected to a third welding portion 232 extending out of the third holding wall 133, and the third contact portion 233 is elastically arranged between two third holding walls 133. The third welding portions 232 are welded on the circuit board and electrically connected to the circuit board.

[0040] See also Figures 1 to 4 The shielding shell 3 includes a top plate 31, which is arranged above the insulating body 1 and the card holder 4. One side edge of the top plate 31 is bent downward to extend to form a first side plate 32, and the bottom edge of the first side plate 32 is connected to a plurality of first support plates 321 arranged in a front-to-back manner and bent inwardly. Among the plurality of first support plates 321, the end edge of the first support plate 321 adjacent to the front end edge of the top plate 31 is connected to a first fixed pin 322 bent downwardly and extended. The other side edge of the top plate 31 is bent downward to extend to form a second side plate 33, and the bottom edge of the second side plate 33 is connected to a plurality of third support plates 331 arranged in a front-to-back manner and bent inwardly, and the top plate 31, the second side plate 33 and the third support plate 331 are arranged to form a push rod receiving groove 301. The top plate 31 is provided with a plurality of first openings 34 arranged in a front-to-back arrangement on one side adjacent to the second side plate 33. Each of the first openings 34 is connected to a second support plate 341 that is bent downward and then bent inward at an edge adjacent to the second side plate 33. The second support plate 341 and the third support plate 331 have the same extension direction at their ends, and both extend relative to the first support plate 321.

[0041] A second opening 35 is formed on the front end of the top plate 31 at one side of the second side plate 33. A fourth support plate 351 is connected to the side edge of the second opening 35. The fourth support plate 351 is bent downward and then bent inward. The end of the fourth support plate 351 is bent downward and extends to form a second fixing pin 352. The top plate 31, the first side plate 32 and the first support plate 321 are arranged to form a first slideway 302. The top plate 31, the second support plate 341 and the fourth support plate 351 are arranged to form a second slideway 303.

[0042] The shielding shell 3 is provided with an elastic contact arm 36 extending into the receiving space 80. In this example, the top plate 31 is provided with a grounding plate opening 37 on one side adjacent to the first side plate 32, and the elastic contact arm 36 has an elastic portion 361 extending backward and then backward and downward from the front side edge of the grounding plate opening 37, and the end of the elastic portion 361 is connected to an abutting portion 362 extending backward and upward.

[0043] The top plate 31 is connected to a first rear plate 381 that bends downward and extends at a rear edge adjacent to the first side plate 32. The top plate 31 is connected to a second rear plate 382 that bends downward and extends at a rear edge adjacent to the second side plate 33, and a first retaining piece 383 that bends forward and extends is connected to the terminal edge of the second rear plate 382. The top plate 31 is connected to a third rear plate 384 that bends downward and extends between the first rear plate 381 and the second rear plate 382 at the rear edge, and a second retaining piece 385 that bends backward and extends is connected to the terminal edge of the third rear plate 384.

[0044] Please continue reading Figures 1 to 4 , the shielding shell 3 is connected to a detection piece 39 extending into the receiving space 80. In this embodiment, the top plate 31 is provided with a third opening 386 at the rear portion adjacent to the first side plate 32, and the detection piece 39 is connected to the front end edge of the third opening 386. The detection piece 39 first extends backward from the front end edge of the third opening 386 and then bends downward to extend.

[0045] See also Figures 1 to 6 In this embodiment, the top plate 31 is disposed above the first insulating body 11, the second insulating body 12 and the third insulating body 13, the first side plate 32 and the second side plate 33 are disposed on both sides of the first insulating body 11, the second insulating body 12 and the third insulating body 13 respectively, and the first rear plate 381, the second rear plate 382 and the third rear plate 384 are disposed behind the second insulating body 12. Specifically, the first side plate 32 is disposed on the outer side of the first side wall 111, the third side wall 121 and the fifth side wall 131, and the second side plate 33 is disposed on the outer side of the second side wall 112, the fourth side wall 122 and the sixth side wall 132. The first fixing pin 322 and the second fixing pin 352 are both inserted into the circuit board, and the lower surfaces of the first support plate 321, the second support plate 341, the third support plate 331, the fourth support plate 351, the first retaining plate 383 and the second retaining plate 385 are welded to the circuit board.

[0046] See also Figures 1 to 4In this embodiment, the receiving space 80 is surrounded by the first insulating body 11, the second insulating body 12, the third insulating body 13 and the top plate 31, the first side plate 32, the second side plate 33, the first rear plate 381, the second rear plate 382, ​​the third rear plate 384 and the circuit board.

[0047] See also Figure 1 , Figure 2 , Figure 3 and Figure 7 The card holder 4 includes a plastic frame 41 and a metal frame 42 integrally formed in the plastic frame 41. The metal frame 42 partially exposes the plastic frame 41. After the card holder 4 is installed in the receiving space 80, the exposed part of the metal frame 42 abuts against the elastic contact arm 36. Specifically, the metal frame 42 includes two side panels 421 extending front and back and arranged in a transverse manner, a front side panel 422 connected to the front end edges of the two side panels 421, a rear side panel 423 connected to the rear end edges of the two side panels 421, and a middle panel 424 connected to the middle of the two side panels 421. The upper surface of one of the side panels 421 is provided with a convex portion 425 protruding from the plastic frame 41, and the convex portion 425 abuts against the elastic contact arm 36. In this embodiment, a widening plate 426 extends inward from the middle of the inner edge of the side plate 421 provided with the protrusion 425 , and the protrusion 425 is provided at the connection between the widening plate 426 and the side plate 421 .

[0048] The plastic frame 41 includes a first frame 411 and a second frame 412 extending forward and backward and arranged in a transverse manner. The front and rear ends of the first frame 411 are respectively connected to a third frame 413 and a fourth frame 414, and the middle of the first frame 411 and the second frame 412 is connected to a fifth frame 415. A first slide 416 and a second slide 417 protrude outward from the upper portions of the outer sides of the first frame 411 and the second frame 412, respectively. After the card holder 4 is inserted into the receiving space, the first slide 416 and the second slide 417 are respectively received in the first slide 302 and the second slide 303. The coordination of the first slide 416 and the first slide 302 and the second slide 417 and the second slide 303 is conducive to providing guidance and support for the card holder 4 when it is inserted into the receiving space 80.

[0049] The front end of the first frame 411 is connected to a stopper plate 418 whose four sides all protrude from the four sides of the first frame 411. In this embodiment, the one side plate 421 is fixedly disposed inside the first frame 411 and the first slide plate 416, the other side plate 421 and its widened plate 426 are fixedly disposed inside the second frame 412 and the second slide plate 417, the protrusion 425 protrudes from the upper surface of the second frame 412, and the middle plate 424 is fixedly disposed inside the fifth frame 415.

[0050] See also Figure 2 and Figure 7 A first card support plate 43 extending inwards is connected to the lower sides of the front parts of the two opposite sides of the first frame 411 and the second frame 412. A second card support plate 44 extending inwards is connected to the lower sides of the rear parts of the two opposite sides of the first frame 411 and the second frame 412. An anti-foolproof plate 45 extending inwards is connected to the upper side of the inner side of the second frame 412 in front of the fifth frame 415.

[0051] Please continue reading Figure 2 and Figure 7 , the card tray 4 is provided with at least one card receiving slot. In this embodiment, the card tray 4 is provided with a first card receiving slot 401 and a second card receiving slot 402 corresponding to the first insulating body 11 and the second insulating body 12, respectively. The card tray 4 is provided with an extension slot 403 connected to the first card receiving slot 401 behind the first card receiving slot 401, and the third insulating body 13 is arranged in the extension slot 403. Specifically, the first card receiving slot 401 is surrounded by a first frame body 411, a second frame body 412, a third frame body 413 and a first card tray plate 43. The second card receiving slot 402 is surrounded by a first frame body 411, a second frame body 412, a fourth frame body 414, a fifth frame body 415 and a second card tray plate 44. The extension slot 403 is surrounded by a first frame body 411, a second frame body 412, a fifth frame body 414 and an anti-fool plate 45.

[0052] The first card receiving slot 401 and the second card receiving slot 402 can both be equipped with a SIM (Subscriber Identity Module) card (not shown). When the first card receiving slot 401 is not equipped with a SIM card, a SD (Secure Digital Card) card (not shown) can be installed in the first card receiving slot 401 and the extension slot 403 by connecting the first card receiving slot 401 and the extension slot 403. Thus, the card connector 100 can be equipped with two SIM cards or a SIM card and an SD card at the same time, and has the function of using multiple cards.

[0053] See also Figures 1 to 4 The card ejection mechanism 5 includes an insulating fixed block 51, a cam 52, a fixed frame 53 and a push rod 54. The rear end of the push rod 54 is provided with a holding groove 541, and the front end of the push rod 54 is provided with a push block 542 that is bent and extended outward. The push rod 54 can be slidably received in the push rod receiving groove 301, and the push block 542 protrudes outward from the second side plate 33 of the shielding shell 3.

[0054] The fixing frame 53 is fixed on the circuit board and disposed between the second insulating body 12 and the first rear plate 381 , the second rear plate 382 and the third rear plate 384 . The insulating fixing block 51 is fixed on the fixing frame 53 and the second rear plate 382 .

[0055] A rotating shaft 511 is protruded from the upper surface of the insulating fixing block 51, and the cam 52 is pivotally connected to the rotating shaft 511. The cam 52 includes a pushing portion 521 that abuts against the card tray 4 and a driving portion 522 that cooperates with the push rod 54. The free end of the driving portion 522 is received in the clamping groove 541 so that the cam 52 and the push rod 54 can operate in conjunction.

[0056] When the card tray 4 is inserted, the pushing portion 521 is driven by the card tray 4, and the fourth frame 414 of the card tray 4 pushes the pushing portion 521 until it is fixed at a preset position by the card tray 4. When the card tray 4 is withdrawn, the pushing portion 542 of the push rod 54 is pushed backward by external force, and the push rod 54 pushes the driving portion 522 to drive the cam 52 to rotate clockwise. The pushing portion 521 of the cam 52 pushes the fourth frame 414 of the card tray 4 to withdraw the card tray 4, and the cam 52 returns to its initial state.

[0057] Please continue reading Figures 1 to 4 The detection terminal 6 includes a terminal holding portion 61 fixed in the insulating fixed block 51, a terminal welding portion 62 connected to the terminal holding portion 61 and protruding from the lower surface of the insulating fixed block 51, a terminal contact portion 63 connected to the terminal holding portion 61, and a terminal abutting portion 64 connected to the free end of the terminal contact portion 63. The terminal contact portion 63 extends into the receiving space 80, the terminal welding portion 62 is welded on the circuit board, and an insulating wear-resistant block 65 made of plastic is fixed at the end of the terminal abutting portion 64. The terminal contact portion 63 is in an arch shape with an opening inward. When the card tray 4 is not inserted, the terminal contact portion 63 of the detection terminal 6 elastically abuts against the detection piece 39. When the card tray 4 is fully inserted to the preset position, the fourth frame 414 of the card tray 4 pushes the insulating wear-resistant block 65 of the detection terminal 6 backward, so that the terminal contact portion 63 of the detection terminal 6 is separated from the detection piece 39, thereby realizing the detection function when the card tray 4 is inserted.

[0058] As described above, the card connector 100 of the present invention sets part of the metal frame 42 of the card tray 4 to expose the plastic frame 41, and provides an elastic contact arm 36 extending into the accommodating space 80 on the top plate 31 of the shielding shell 3. When the card tray 4 is installed in a preset position of the accommodating space 80, the exposed part of the metal frame 42 abuts against the elastic contact arm 36, and the static electricity generated by the card connector 100 during use is conducted away through the shielding shell 3, thereby eliminating the static electricity effect, ensuring the stability of the electronic card signal transmission and avoiding damage to the card connector 100 and the electronic components inside the electronic product.

[0059] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A card connector mounted on a circuit board in an electronic product, characterized in that: It includes at least one insulating body, a plurality of conductive terminals, a shielding shell and a card holder; the plurality of conductive terminals are fixed on the insulating body and electrically connected to the circuit board; the shielding shell is sleeved on the outer periphery of the insulating body and fixed on the circuit board, a receiving space is formed between the shielding shell, the insulating body and the circuit board, and the shielding shell is provided with an elastic contact arm extending into the receiving space; the card holder is provided with at least one card receiving slot, and the card holder can be slidably installed in the receiving space forward and backward; the card holder includes a plastic frame and a metal frame integrally formed in the plastic frame, the metal frame is partially exposed from the plastic frame, and after the card holder is installed in the receiving space, the exposed part of the metal frame abuts against the elastic contact arm.

2. The card connector according to claim 1, wherein: The shielding shell includes a top plate, which is arranged above the insulating body and the tray. A grounding plate opening is opened on one side of the top plate. The elastic contact arm has an elastic portion that extends backward and then backward and downward from the front edge of the grounding plate opening, and the end of the elastic portion is connected to an abutment portion.

3. The card connector according to claim 1, wherein: The metal frame includes two side panels extending forward and backward and arranged horizontally, a front side panel connected to the front end edges of the two side panels, and a rear side panel connected to the rear end edges of the two side panels. The upper surface of one of the side panels is provided with a convex portion protruding out of the plastic frame, and the convex portion abuts against the elastic contact arm.

4. The card connector according to claim 3, characterized in that: A widening plate extends inwardly from the middle of the inner edge of the side plate provided with the convex portion, and the convex portion is arranged at the connection between the widening plate and the side plate.

5. The card connector according to claim 1, wherein: The insulating body includes a first insulating body and a second insulating body arranged front to back along the sliding direction of the card tray; the plurality of conductive terminals include a plurality of first conductive terminals and a plurality of second conductive terminals, and the first conductive terminals are fixed on the first insulating body in pairs along both sides of the sliding direction of the card tray; the second conductive terminals are fixed on the second insulating body in pairs along both sides of the sliding direction of the card tray; the card tray is provided with a first card receiving slot and a second card receiving slot respectively at the first insulating body and the second insulating body.

6. The card connector according to claim 5, characterized in that: Each of the first conductive terminals has a first retaining portion fixed inside the first insulating body, a first welding portion connected to the first retaining portion and extending out of the first insulating body, two first extension arms connected to the first retaining portion at intervals and extending upwardly in a direction away from the first insulating body, and a first contact portion formed by the two first extension arms intersecting at a high point.

7. The card connector according to claim 5, characterized in that: Each of the second conductive terminals has a second retaining portion fixed inside the second insulating body, a second welding portion connected to the second retaining portion and extending out of the second insulating body, two second extension arms connected to the second retaining portion at intervals and extending upwardly in a direction away from the second insulating body, and a second contact portion formed by the two second extension arms intersecting at a high point.

8. The card connector according to claim 5, characterized in that: An extension groove connected to the first card receiving groove is provided on the card tray behind the first card receiving groove; the insulating body also includes a third insulating body, and the third insulating body is provided in the extension groove; the plurality of conductive terminals include a plurality of third conductive terminals, and each of the third conductive terminals is arranged horizontally and fixed on the third insulating body.

9. The card connector according to claim 8, characterized in that: Each of the third conductive terminals comprises a third holding portion with two ends fixed inside the third insulating body, and a third contact portion connected to the third holding portion and bent upward in the middle to form an arch shape. Each of the third holding portions is connected to a third welding portion.

10. The card connector according to claim 1, wherein: It also includes a detection terminal having a terminal contact portion extending into the receiving space; the shielding shell is connected with a detection sheet extending into the receiving space, and the terminal contact portion can elastically abut against the detection sheet.

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