TWI548152B - Electrical card connector and assembly method - Google Patents

Description

Electronic card connector and assembly method thereof

The invention relates to an electronic card connector and an assembly method thereof, in particular to an electronic card connector with a card retracting mechanism and an assembly method thereof.

With the rapid development of consumer electronic products such as mobile phones and digital cameras, especially before the rapid expansion of the functions of various electronic products, the storage capacity of these devices cannot meet the needs of consumers. Therefore, an electronic manufacturer adds an electronic card connector to an electronic device to connect an external memory card medium to expand the storage capacity of the electronic device. Therefore, electronic card connectors dedicated to assembling various electronic cards are widely used in various electronic devices.

For the electronic card connector of the prior art, please refer to the Chinese Patent Publication No. CN201741850U, the electronic card connector includes an insulating body, a plurality of conductive terminals, a switch terminal, a shielding shell covering the insulating body, and being assembled on the insulating body. One side is used for pushing back the e-card's ejecting mechanism; wherein the shielding shell and the insulative housing define a receiving space for receiving the electronic card. The card retracting mechanism mainly comprises a slider slidably assembled on the insulative housing, a limiting elastic piece fixed on the sliding block for holding and holding the electronic card, and one end is fixed to the insulating body and the other end is slidable. A guiding rod housed in the heart-shaped channel on the slider and a spring for providing elastic restoring force. a positioning hole for receiving the spring is disposed on the slider of the card ejecting mechanism, and a cylindrical positioning post is protruded forwardly from a rear end of the insulating body; The end is inserted forward into the positioning hole on the slider; the other end of the spring is sleeved outwardly from the front end of the card connector to the outside of the positioning post to fix the spring to the insulating body.

However, the spring in the card ejecting mechanism of the prior art is limited by the fixed structure between the slider and the insulative housing, so that the spring assembly of the card ejecting mechanism in the prior art is cumbersome and difficult to achieve in the current production technology. The assembly of the equipment is completed automatically, and the assembly of the card ejecting mechanism during the production process still requires a lot of labor. Thereby, the production cost is increased and the production efficiency is not high.

In view of the above problems, it is necessary to provide an improved electronic card connector and an assembly method thereof to solve the above problems.

It is an object of the present invention to provide an electronic card connector having a card ejecting mechanism and an assembly method thereof, wherein the card ejecting mechanism is simple to assemble.

To achieve the above object, the present invention provides an electronic card connector including an insulative housing having a rear wall, a plurality of conductive terminals held on the insulative housing, a shielding housing assembled to the insulative housing, and being mounted and fixed to the insulative housing. The switch terminal and the card ejecting mechanism for mounting and retracting the electronic card are mounted on the side of the insulative housing; the insulative housing and the shielding shell define a receiving space for receiving the electronic card; the card ejecting mechanism includes a slider a spring and a guiding rod; the sliding portion is provided with a fixing portion for fixing the spring assembled to the sliding block, and the rear end of the insulating body is also provided with a fixed pressing assembly to the corresponding insulating body. The holding part of the spring.

Further, the fixing portion includes a receiving groove for receiving the spring, the receiving groove has one end penetrating the end surface of the slider, and the other end of the receiving groove is formed with an edge for resisting the spring. The receiving groove includes a holding groove and a notch formed through the upper surface of the slider.

Further, a guiding surface is formed at the notch, and the diameter of the spring cross section is at least not less than a width of the notch near the holding groove.

Further, the holding portion includes a convex hull, the rear end of the insulating body is provided with a rear wall, and one side of the insulating body is concavely provided with a sliding groove, and the convex hull is along an inner wall of the rear wall opposite to the sliding groove The surface is formed in a protruding direction, and one end of the spring is correspondingly held in the holding groove, and the other end of the spring slides from the top to the convex hull to reach a limit fixing with the convex hull.

Further, the convex hull is a hemispherical structure having a smooth curved surface.

Further, the two sides of the convex hull respectively extend along the insulating body toward the retracting direction to form a limiting wall for the limiting spring.

Another object of the present invention is to disclose a method for assembling an electronic card connector. The assembly method includes the following steps: (a) molding an insulative housing, holding the conductive terminal and the switch terminal to the insulative housing, and the rear end of the insulative housing a fixing portion for fixing the spring is provided; (b) a slider for fixing the locking elastic piece is assembled from the top to the bottom on the side of the insulating body, and the fixed portion for fixing the spring is disposed on the slider; (c) assembling the spring And a guiding rod; in the process, one end of the spring is assembled into the fixing portion from top to bottom until the one end of the spring and the fixing portion are mutually fixed; and the other end of the spring is assembled from the top to the bottom to the insulating body a retaining portion formed in the rear end until the other end of the spring and the fixed portion are mutually retained; (d) assembling and fixing the shield housing to the insulative housing.

Further, the fixing portion includes a receiving groove for receiving the spring, the receiving groove has one end extending through the end surface of the slider, and the other end of the receiving groove is formed with a resisting wall for abutting the edge of the spring; the receiving groove includes The holding groove and the notch formed through the upper surface of the slider.

Further, a guiding surface is formed at the notch, and the diameter of the spring cross section is at least not less than a width of the notch near the holding groove.

Further, the holding portion includes a convex hull, the rear end of the insulating body is provided with a rear wall, and one side of the insulating body is concavely provided with a sliding groove, and the convex hull is along an inner wall of the rear wall opposite to the sliding groove The surface is formed in a protruding direction, and one end of the spring is correspondingly held in the holding groove, and the other end of the spring slides from the top to the convex hull to reach a limit fixing with the convex hull.

Compared with the prior art, the electronic card connector of the present invention has at least the following advantages: the spring in the card retracting mechanism is assembled from the top to the bottom to the insulative body, and both ends thereof and the corresponding slider and the end of the insulative body are held by interference, the whole The assembly process and its simplicity are conducive to improving production efficiency and improving product yield.

100‧‧‧electronic card connector

1‧‧‧Insulating body

10‧‧‧ base

11, 12‧‧‧ side

13‧‧‧ beams

14‧‧‧Back wall

141‧‧‧ dent

15‧‧‧Slip groove

16‧‧‧ convex hull

17‧‧‧Limited wall

2‧‧‧Electrical terminals

21‧‧‧Weld Department

22‧‧‧Contacts

3‧‧‧Switch terminals

31‧‧‧Contacts

32‧‧‧ soldering piece

4‧‧‧Shaded housing

40‧‧‧ Main body

41‧‧‧ side panels

42‧‧‧ Back panel

5‧‧‧Return card agency

51‧‧‧ Slider

511‧‧‧heart shaped slot

512‧‧‧ receiving trough

5121‧‧‧ Guide surface

5122‧‧‧ holding slot

5123‧‧‧ notch

513‧‧‧Resist the wall

52‧‧‧ Guide rod

53‧‧‧ Spring

54‧‧‧Locking shrapnel

The first figure is an exploded perspective view of the electronic card connector of the present invention; the second figure is a partially exploded perspective view of the electronic card connector shown in the first figure, which shows a state diagram of the separation of the metal casing from the insulating body; A partial exploded view of the electronic card connector shown in the first figure, which shows a state diagram of the metal casing and the spring separated from the insulating body; The fourth drawing is a partially exploded perspective view of the electronic card connector shown in the first figure, which shows a state diagram of the metal casing and the entire card ejecting mechanism separated from the insulative body; the fifth figure is the electronic card connector of the present invention to remove the metal casing. And the top view of the spring.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the electronic card connector 100 of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 to FIG. 5 , the electronic card connector 100 of the present invention comprises an insulative housing 1 , a plurality of conductive terminals 2 , a switch terminal 3 , a shielding shell 4 covering the insulative housing 1 , and an insulative housing 1 . One side is used to push back the e-card (not shown), and the ejecting mechanism 5 includes a spring 53. The shielding housing 4 and the insulative housing 1 define a receiving space for receiving an electronic card. Not shown).

Referring to the third to fifth figures, the insulative housing 1 includes a base portion 10 at the end in the card insertion direction, and two side portions 11 and 12 extending from the base portion 10 toward the ejecting direction of the electronic card and connecting the two sides. 11, 12 and near the beam 13 of the electronic card insertion port, the beam 13 is disposed substantially parallel to the base 10 and spaced apart by a certain distance to provide an elastic deformation space of the conductive terminal 2. The base portion 10 extends vertically upward to form a plurality of discrete rear walls 14, and a recess 141 is formed between the plurality of rear walls 14. A sliding groove 15 is formed on one side of the insulating body 1 , and the sliding groove 15 is used for assembling the card ejecting mechanism 5 . A rear end of one side of the insulative housing 1 is provided with a holding portion (not labeled) for fixing the spring 53 assembled to the corresponding insulative housing 1. The holding portion includes a convex package 16 protruding from the end of the card body of the insulative housing 1 toward the side of the card, and a limiting wall 17 disposed on both sides of the convex bag 16 . The convex hull 16 is formed to protrude from the inner wall surface of the rear wall 14 and the sliding groove 15 in the direction of the retracting direction, and the surface of the convex hull 16 has a smooth curved shape. The convex hull 16 in the present embodiment has a hemispherical structure; of course, in other embodiments, the The convex hull 16 may be a curved surface structure having any suitable curvature. The smooth curved surface design of the surface of the convex hull 16 mainly serves as a pressing assembly of the guiding spring 53 and a limit fixing function of the assembled end of the spring 53. That is, the surface of the convex hull 16 can also be designed as a slope to achieve the same effect. Of course, the convex hull 16 may be formed of a plastic material, or may be designed as other materials such as metal. The limiting wall 17 is formed by the rear wall 14 protruding toward the retracting direction. The limiting walls 17 are respectively disposed on the two sides of the convex hull 16 for fixing the spring 53 assembled into the insulating body to the left and right.

Referring to the fourth and fifth figures, the conductive terminal 2 is mounted and fixed on the beam 13 of the insulative housing 1, and includes a fixing portion (not labeled) fixed to the beam 13 and extending from one end of the fixing portion toward the card retracting direction. The soldering portion 21 electrically connected to the circuit board (not shown) and the other end of the self-fixing portion extend toward the card insertion direction and protrude into the contact portion 22 in the receiving space.

Referring to the fourth and fifth figures, the switch terminal 3 is formed by stamping a metal plate, and includes a fixing piece (not labeled) fixed on the base 10, and extending from one end of the fixing portion toward the card retracting direction and protruding into the receiving portion. The contact piece 31 in the space and the other end of the self-fixing portion extend in the direction in which the electronic card is inserted to protrude from the solder tab 32 behind the base 10. The soldering piece 32 is disposed in the recess 141 formed between the adjacent rear walls 14 and the end edge of the soldering piece 32 is flush with the outer wall surface of the rear wall (refer to the fifth figure). The contact piece 31 of the switch terminal 3 is disposed opposite to the contact portion 22 of one of the plurality of conductive terminals 2. When the electronic card is inserted through the insertion port, the contact piece 31 of the switch terminal 3 and the contact portion 22 of a conductive terminal 2 opposite thereto are simultaneously contacted with a metal piece (not shown) on the electronic card, thereby forming a conductive loop. It acts as a switch.

As shown in the fourth figure, the shielding case 4 is located above the insulative housing 1 and includes a flat body portion 40 and a side plate extending downward from the main body portion 40 on both sides of the insulative housing 1. 41 and the card 42 is held behind the rear end of the insulative housing 1.

Referring to the second figure, the card ejecting mechanism 5 is mounted on one side side portion 12 of the insulative housing 1 for ejecting the electronic card from the receiving space, and includes a slider 51 and a spring provided with a heart-shaped groove 511. 53. Guide rod 52 and locking elastic piece 54. The slider 51 is assembled on one side of the insulative housing 1 and cooperates with the sliding slot 15 to slide back and forth along the insertion and withdrawal directions of the electronic card. The latching elastic piece 54 is fixed on the slider 51 for locking the electronic card, and the locking elastic piece 54 is used to prevent the occurrence of an unfavorable situation such as ejecting the receiving space during insertion and withdrawal of the electronic card. The guiding rod 52 is fixed at one end to the insulative housing 1 at one end of the insertion slot of the electronic card, and the other end of the guiding rod 52 is slidably received in the heart-shaped slot 511 of the slider 51. The guiding rod 52 is used to guide the slider to achieve front and rear sliding. One end of the slider 51 is provided with a fixing portion (not shown) for fixing the spring 53 assembled to the slider 51. The fixing portion includes a receiving groove 512 for receiving and holding the spring 53. The receiving groove 512 is formed with a notch 5123 through the upper surface of the sliding block 51. One end of the receiving groove 512 extends through the end surface of the slider 51, and the other end of the receiving groove 512 is formed with a resisting wall 513 for limiting the end edge of the spring 53. . The receiving groove 512 includes a holding groove 5122 and a guiding surface 5121 formed by the notch 5123. The diameter of the cross section of the spring 53 is at least not less than the width of the notch 5123 near the holding groove 5122; in this embodiment, the diameter of the cross section of the spring 53 is larger than the width of the notch 5123 near the holding groove 5122, that is, the spring 53 is horizontal. The diameter at the section is greater than the narrowest width of the slot 5123 to facilitate better retention of the spring 53. When assembled, one end of the spring 53 is press-fitted into the holding groove 5122 through the slot 5123 from the top to the bottom. The guiding surface 5121 is used for guiding the guiding action of the spring 53 during assembly, and prevents the groove from being fixed during assembly. The interference force of the slot 5123 of the 5122 to the spring 53 is too large to permanently deform the spring 53, and at the same time, the damage of the slot 5123 of the retaining slot 5122 during assembly is prevented, and the spring 53 that is pressed into the retaining slot 5122 is released to release the retaining slot. 5122; the diameter of the cross section of the spring 53 is larger than the notch The width of the 5123 near the holding groove 5122 further ensures that the spring 53 pressed into the holding groove 5122 can be stably held in the holding groove 5122. The other end of the spring 53 is also assembled into the insulative housing 1 from the top to the bottom. The end edge of the spring 53 is slidably deformed downward along the surface of the convex hull 16 formed on the insulative housing 1 until it is engaged with the convex hull 16. One end of the spring 53 is fixed in the holding groove 5122 of the insulating body, and the end edge thereof is correspondingly abutted against the resisting wall 513, and the other end is clamped and fixed to the periphery of the convex hull 16 to achieve stable holding of the spring 53. In addition, in other embodiments, the wall 14 of the insulative housing 1 at the position of the convex hull 16 can also be designed to be similar to the above-mentioned holding groove 5122, and the same effect as the spring 53 can be achieved.

In addition, the card withdrawal mechanism of the card ejecting mechanism 5 is a well-known technology in the industry, and will not be described in detail herein.

Referring to the first to fifth figures, the assembly process of the electronic card connector 100 of the present invention will be described below. First, the conductive terminal 2 and the switch terminal 3 are integrally molded to the insulative housing 1. Next, the slider 51 to which the latching elastic piece 54 is fixed is assembled from the top to the bottom in the sliding groove 15 of the insulative housing 1 near the insertion end of the electronic card. The spring 53 and the guiding rod 52 are then assembled from the top to the bottom onto the insulative housing 1; in the process, one end of the spring 53 is press-fitted into the holding groove 5122 through the slot 5123 from top to bottom, the spring 53 The other end is also assembled into the insulative housing 1 from the top to the bottom. The end edge of the insulating body 1 is slid along the arc of the convex hull 16 formed on the insulative housing 1 until the end edge of the spring 53 and the convex hull 16 are fixed. Finally, the shield case 4 is assembled onto the insulative housing 1 from top to bottom. The whole assembly process of the electrical connector of the invention is simple and the structure is stable and stable, and the automatic mechanical assembly can be achieved, thereby achieving the purpose of reducing cost and improving product yield.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above is only a preferred embodiment of the present invention, and the scope of the present invention is not above The equivalents of the embodiments of the present invention are intended to be within the scope of the following claims.

100‧‧‧electronic card connector

1‧‧‧Insulating body

10‧‧‧ base

11, 12‧‧‧ side

13‧‧‧ beams

14‧‧‧Back wall

141‧‧‧ dent

17‧‧‧Limited wall

2‧‧‧Electrical terminals

21‧‧‧Weld Department

3‧‧‧Switch terminals

4‧‧‧Shaded housing

40‧‧‧ Main body

41‧‧‧ side panels

42‧‧‧ Back panel

51‧‧‧ Slider

513‧‧‧Resist the wall

52‧‧‧ Guide rod

53‧‧‧ Spring

54‧‧‧Locking shrapnel

Claims (10)

An electronic card connector comprising an insulating body provided with a rear wall, a plurality of conductive terminals fixed on the insulating body, a shielding shell assembled on the insulating body, a switch terminal mounted on the insulating body, and mounted and insulated The body side is used for pushing back the card retracting mechanism of the electronic card; the insulative housing and the shielding shell are defined to form a receiving space for receiving the electronic card; the card ejecting mechanism comprises a slider, a spring and a guiding rod; The slider is provided with a fixing portion for fixing the spring assembled to the slider, and the rear end of the insulating body is also provided with a holding portion for fixing the spring assembled to the corresponding insulating body. The electronic card connector of claim 1, wherein the fixing portion comprises a receiving groove for receiving a spring, the receiving groove has one end extending through the end surface of the slider, and the other end of the receiving groove is formed to abut the spring The receiving groove of the end edge includes a holding groove and a notch formed through the upper surface of the slider. The electronic card connector of claim 2, wherein the notch is formed with a guiding surface, and the diameter of the spring cross section is at least not less than a width of the notch near the holding groove. The electronic card connector of claim 2, wherein the holding portion comprises a convex hull, the rear end of the insulating body is provided with a rear wall, and one side of the insulating body is concavely provided with a sliding groove. The convex hull is formed to protrude from the inner wall surface of the rear wall opposite to the sliding groove toward the retracting direction, and one end of the spring is correspondingly held in the holding groove, and the other end of the spring slides from the top to the convex hull A limit is fixed with the convex hull. The electronic card connector of claim 4, wherein the convex hull is a hemispherical structure having a smooth curved surface. The electronic card connector of claim 4, wherein the two sides of the convex package respectively extend along the insulative body toward the retracting direction to form a limiting wall for the limiting spring. A method for assembling an electronic card connector, characterized in that the assembling method comprises the steps of: (a) forming an insulating body, holding the conductive terminal and the switch terminal to the insulative housing, and the rear end of the insulating body is provided for fixing a holding portion of the spring; (b) assembling a slider for fixing the latching elastic piece from the top to the bottom on the side of the insulating body, the slider is provided with a fixing portion for fixing the spring; (c) assembling the spring and the guiding rod During this process, one end of the spring is assembled into the fixed portion from top to bottom until the one end of the spring and the fixed portion are mutually fixed; and the other end of the spring is assembled from the top to the bottom to be assembled to the rear end of the insulating body. In the holding portion, until the other end of the spring and the holding portion are mutually held; (d) the shielding housing is assembled and fixed to the insulating body. The method of assembling an electronic card connector according to claim 7, wherein the fixing portion includes a receiving groove for receiving a spring, the receiving groove has one end extending through the end surface of the slider, and the other end of the receiving groove is formed for a receiving wall that resists an end edge of the spring; the receiving groove includes a retaining groove and a notch formed through the upper surface of the slider. The method of assembling an electronic card connector according to claim 8, wherein the notch is formed with a guiding surface, and the diameter of the spring cross section is at least not less than a width of the notch near the holding groove. The method of assembling an electronic card connector according to claim 8 or 9, wherein the holding portion comprises a convex hull, the rear end of the insulating body is provided with a rear wall, and the insulating body is recessed on one side. a sliding groove, the convex hull is formed to protrude from the inner wall surface of the rear wall opposite to the sliding groove in a direction of retreating, wherein one end of the spring is correspondingly held in the holding groove, and the other end of the spring slides from above to The convex hull thus achieves a limit fixing with the convex hull.