TWM487534U - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector having a normally closed switch.

Electrical connectors commonly used to electrically connect electronic cards are typically provided with a detection switch to ensure that signal transmission is not missed. For example, Taiwan Patent No. M418421 discloses an electronic card connector including an insulative housing, a conductive terminal housed in the insulating body, a shielding case covering the insulative housing, and a switching device. The insulative housing includes a base and a tail formed on a side of the base away from the insertion end of the electronic card. The switch device includes a spring piece terminal and a contact terminal. The spring piece terminal is formed by tearing one end of the self-shielding case corresponding to the tail end of the insulating body, and the contact terminal is disposed at a position corresponding to the spring piece terminal at the tail end of the insulating body and is in contact with the spring piece terminal.

When the electronic card is not inserted, the spring switch terminal is in contact with the contact terminal. When the electronic card is inserted, the electronic card pushes up the spring chip terminal to disconnect the spring chip terminal from the contact terminal, thereby realizing the switch function. However, since the shrapnel terminals must provide sufficient pre-load force, the shrapnel terminals can be stably contacted with the contact terminals. When the electronic card (or the tray carrying the electronic card) is inserted and the spring terminal is pushed up, the bullet The chip terminal may generate a large elastic restoring force due to the influence of the preload force, forcing the electronic card (or the tray carrying the electronic card) to be pushed out in the direction of the card retracting, which may cause poor electrical contact between the electronic card connector and the electronic card. Especially when used in a mobile device with frequent vibrations, electrical contact failure is more likely to occur.

Accordingly, it is an object of the present invention to provide an electrical connector that ensures the stability of the electrical connection of the electronic card.

Therefore, the novel electrical connector comprises: a shielding shell, an insulating unit, a plurality of terminals and a switching unit. The shielding shell includes a top wall and opposite side walls, each of the side walls having an upright portion extending from the top wall and a lateral portion extending from the upright portion and spaced apart from the top wall. The insulating unit and the shielding housing together define a slot having a socket. The terminals are provided in the insulating unit. The switch unit includes a fixing piece and an elastic piece, and the fixing piece is disposed on the insulating unit and located at a rear side of the slot opposite to the socket and adjacent to one of the side walls, and has a top wall opposite to the shielding case The contact surface and a soldering portion extending outside the insulating unit. The elastic piece is formed on the top wall of the shielding shell, and has a resilient arm extending from the top wall into the slot and obliquely away from the socket, and a contact portion connected to the end of the elastic arm, The contact portion abuts against the contact surface of the fixing piece. The shielding case further includes a first clamping mechanism having a pair of lateral portions respectively disposed adjacent to the side walls of the switch unit and convex portions of the top wall, the pair of convex portions protruding relative to each other in the slot.

The electrical connector of the present invention further includes a tray that can be placed in the slot by the socket, and the tray is pushed when the slot is received in the slot The elastic piece of the switch unit causes the contact portion of the elastic piece to leave the contact surface of the fixed piece, and the tray is clamped and positioned by the convex portion of the first clamping mechanism.

In the electrical connector of the present invention, the tray has a pair of recessed portions respectively corresponding to the convex portions.

The electrical connector of the present invention, wherein the shielding housing further includes a second clamping mechanism having a pair of lateral portions respectively disposed on the other side wall and a convex portion of the top wall, the pair of convex portions facing each other The slot is relatively convex.

In the electrical connector of the present invention, the convex portions are respectively formed by bending the elongated body of the top wall and the lateral portion, and the sheet body extends in the front-rear direction, the two ends are fixed and the middle portion is bent. .

In the electrical connector of the present invention, the insulating unit includes a rear wall on the opposite side of the socket, and the rear wall has a concave receiving portion, and the contact surface of the fixing piece is located in the receiving portion.

The electrical connector of the present invention, wherein the fixing piece is embedded and fixed to the insulating unit.

The utility model has the effect that the clamping mechanism is arranged close to the switch unit and the tray is clamped and fixed, so as to effectively resist the thrust applied to the tray by the elastic piece of the switch unit due to the elastic restoring force, thereby preventing the tray from being displaced in the direction of the socket and causing the electron Poor electrical contact between the card and the terminal.

1‧‧‧shaded enclosure

11‧‧‧ top wall

12‧‧‧ side wall

121‧‧‧Upright Department

122‧‧‧Transverse Department

13‧‧‧First clamping mechanism

131‧‧‧ convex

14‧‧‧Second clamping mechanism

141‧‧‧ convex

2‧‧‧Insulation unit

21‧‧‧ Back wall

211‧‧‧ 容 部

22‧‧‧Terminal carrier

3‧‧‧ terminals

4‧‧‧Switch unit

41‧‧‧Fixed tablets

411‧‧‧Contact surface

412‧‧‧Weld Department

42‧‧‧Elastic film

421‧‧‧Flexible arm

422‧‧‧Contacts

5‧‧‧Retirement unit

51‧‧‧ shaft parts

52‧‧‧Lings

521‧‧‧Perforation

53‧‧‧Put

6‧‧‧Tray

61‧‧‧Depression

62‧‧‧Depression

8‧‧‧Electronic card

9‧‧‧Circuit board

10‧‧‧ slots

101‧‧‧ socket

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a perspective view showing a preferred embodiment of the present invention. Figure 2 is an exploded perspective view showing the combination of the member of the preferred embodiment and an electronic card; Figure 3 is another perspective view of Figure 2; and Figure 4 is an exploded perspective view of the preferred embodiment of the preferred embodiment FIG. 5 is a further exploded view of FIG. 4; FIG. 6 is another perspective view of FIG. 5; FIG. 7 is a perspective view showing the switch unit of the preferred embodiment as a normally closed switch; Figure 8 is a plan view showing the tray of the preferred embodiment not being placed in the slot; Figure 9 is a cross-sectional view taken along line IX-IX of Figure 8, illustrating the switch unit of the preferred embodiment being normally closed. FIG. 10 is a plan view showing a tray of the preferred embodiment in a slot; and FIG. 11 is a cross-sectional view taken along line XI-XI of FIG. 10, illustrating the switch unit of the preferred embodiment and The interaction between a clamping mechanism and the tray.

Referring to Figures 1 through 5, a preferred embodiment of the present electrical connector is adapted to be disposed on a circuit board 9 for electrically connecting an electronic card 8. The electrical connector comprises a shielding shell 1, an insulating unit 2, a plurality of terminals 3, a switching unit 4, a card ejection unit 5 and a tray 6.

The shielding shell 1 includes a top wall 11 and opposite side walls 12. The side walls 12 each have an upright portion 121 bent by the top wall 11 and a lateral portion 122 bent from the upright portion 121 and spaced apart from the top wall 11.

The insulating unit 2 and the shielding housing 1 together define a slot 10 having a socket 101. The insulating unit 2 includes a rear wall 21 on the opposite side of the socket 101, and a terminal carrier 22 between the rear wall 21 and the socket 101. The rear wall 21 has a concave receiving portion 211.

The terminals 3 are provided in the terminal carrier 22 of the insulating unit 2, and are embedded in the terminal carrier 22 by insert molding.

Referring to FIGS. 3-7, the switch unit 4 includes a fixing piece 41 and an elastic piece 42. The fixing piece 41 is disposed on the rear side of the slot 10 opposite to the socket 101 and adjacent to one of the side walls 12, and has a contact surface 411 opposite to the top wall 11 of the shielding shell 1 and A soldering portion 412 extending outside the insulating unit 2 is extended. In detail, the fixing piece 41 is embedded and fixed to the rear wall 21 of the insulating unit 2 , and the contact surface 411 is located in the receiving portion 211 . The soldering portion 412 is soldered to the circuit board 9. The elastic piece 42 is formed on the top wall 11 of the shielding shell 1 and has a resilient arm 421 extending from the top wall 11 into the slot 10 and obliquely away from the socket 101, and a connection to the elastic Contact portion 422 at the end of arm 421. The contact portion 422 abuts against the contact surface 411 of the fixing piece 41 (see FIG. 9), and forms a normally-closed normally-on switch.

The card ejecting unit 5 includes a shaft member 51, a lever member 52 and a push rod 53. The shaft member 51 is embedded in the rear wall 21 and partially protrudes from the rear wall 21 for the lever member 52 to rotate as a fulcrum. The lever member 52 has a perforation The 521 is sleeved with the shaft member 51 and one end is connected to the push rod 53. The pusher 53 is pushed to rotate the lever member 52, and the tray 6 placed in the slot 10 can be ejected in the direction of the socket 101.

Referring to FIGS. 5 , 6 , 8 and 9 , the shielding shell 1 further includes a first clamping mechanism 13 and a second clamping mechanism 14 . The first clamping mechanism 13 has a pair of lateral portions 122 respectively disposed adjacent to the side wall 12 of the switch unit 4 and a convex portion 131 of the top wall 11. The pair of convex portions 131 are relatively convex toward each other in the slot 10. . The second clamping mechanism 14 has a pair of lateral portions 122 respectively disposed on the other side wall 12 and a convex portion 141 of the top wall 11. The pair of convex portions 141 protrude relative to each other in the slot 10. The convex portions 131 and 141 are respectively formed by bending the elongated sheet body which is torn by the top wall 11 and the lateral portion 122, and the sheet body extends in the front-rear direction and is fixed at both ends to be curved in the middle.

Referring to FIGS. 2 and 3, the tray 6 is used to carry the electronic card 8, and has a pair of recessed portions 61 respectively corresponding to the convex portions 131 and another pair of recessed portions 62 corresponding to the convex portions 141, respectively. Referring to Figures 1, 10 and 11, the tray 6 can be placed in the socket 10 by the socket 101. When the tray 6 is received in the slot 10, the elastic piece 42 of the switch unit 4 is pushed, and the contact portion 422 of the elastic piece 42 is separated from the contact surface 411 of the fixing piece 41, and the switch unit 4 forms an open circuit, and The tray 6 is sandwiched and positioned by the convex portion 131 of the first clamping mechanism 13 and the convex portion 141 of the second clamping mechanism 14. At the same time, the convex portion 131 is correspondingly located in the concave portion 61 and the convex portion 141 is correspondingly located in the concave portion 62. The tray 6 is clamped and fixed by the first clamping mechanism 13 and the second clamping mechanism 14 to resist the elastic recovery force of the elastic piece 42. The thrust applied to the tray 6 is prevented, so that the displacement of the tray 6 in the direction of the socket 101 is prevented, resulting in poor electrical contact between the electronic card 8 and the terminal 3.

In the present embodiment, the second clamping mechanism 14 is provided to increase the clamping force, but only the first clamping mechanism 13 can be implemented, and is not limited to the embodiment. Furthermore, although the embodiment includes the tray 6, in the embodiment of the equivalent change, the tray 6 may not be included, and the electronic card 8 is directly inserted into the slot 10 and the first clamping mechanism 13 is used (and The two clamping mechanisms 14) are clamped and positioned.

In summary, the first clamping mechanism 13 is disposed adjacent to the switch unit 4 and clamps and fixes the tray 6 to effectively resist the thrust applied by the elastic piece 42 to the tray 6 due to the elastic restoring force, thereby avoiding the tray 6 to the socket. The displacement of the 101 direction causes the electronic card 8 to be in poor electrical contact with the terminal 3, so that the purpose of the present invention can be achieved.

However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the patent specification, All remain within the scope of this new patent.

11‧‧‧ top wall

13‧‧‧First clamping mechanism

131‧‧‧ convex

21‧‧‧ Back wall

411‧‧‧Contact surface

421‧‧‧Flexible arm

422‧‧‧Contacts

6‧‧‧Tray

61‧‧‧Depression

9‧‧‧Circuit board

10‧‧‧ slots

101‧‧‧ socket

Claims (7)

An electrical connector includes: a shielding shell, comprising a top wall and opposite side walls, each of the side walls having an upright portion extending from the top wall and a bent portion extending from the upright portion and the top portion An insulating unit, wherein the insulating unit defines a slot having a socket; a plurality of terminals are disposed on the insulating unit; and a switch unit includes a fixing piece and an elastic piece. The fixing piece is disposed on the insulating unit and located at a rear side of the slot opposite to the socket and adjacent to one of the side walls, and has a contact surface opposite to the top wall of the shielding shell and a soldering extending outside the insulating unit The elastic piece is formed on the top wall of the shielding shell, and has a resilient arm extending from the top wall into the slot and obliquely away from the socket, and a contact portion connected to the end of the elastic arm The contact portion abuts the contact surface of the fixing piece; the shielding case further includes a first clamping mechanism having a pair of lateral portions respectively disposed adjacent to the side wall of the switch unit and a convex portion of the top wall, Pair of convex parts With inwardly projecting opposite the slot. The electrical connector of claim 1, further comprising a tray that can be placed in the slot by the socket, and the tray is inserted into the slot to push the elastic piece of the switch unit to make the elasticity Tablet contact The portion leaves the contact surface of the fixing piece, and the tray is clamped and positioned by the convex portion of the first clamping mechanism. The electrical connector of claim 2, wherein the tray has a pair of recesses that respectively correspond to the convex portions. The electrical connector of claim 1, wherein the shielding housing further comprises a second clamping mechanism having a pair of lateral portions respectively disposed on the other side wall and a convex portion of the top wall, the pair of convex portions being mutually It protrudes relatively toward the slot. The electrical connector according to claim 1 or 4, wherein the convex portions are respectively formed by bending the elongated plate body which is torn from the top wall and the lateral portion, and the sheet body extends in the front-rear direction and both ends Fixed and curved in the middle. The electrical connector of claim 1, wherein the insulating unit comprises a rear wall on an opposite side of the socket, and the rear wall has a concave receiving portion, and the contact surface of the fixing piece is located in the receiving portion Inside the department. The electrical connector of claim 6, wherein the fixing piece is embedded and fixed to the insulating unit.