TW201405955A - Terminal, electrical connector, and electrical connection device - Google Patents

Abstract

An electrical connection device includes a circuit board and an electrical connector. The electrical connector includes an insulation body and a plurality of terminals. The front side of the insulation body is protruded from one board edge of the circuit board. The terminals are arranged in two rows. Each terminal includes a fixing part; a pin connection part extended from one side of the fixing part along a first direction; a bending part extended from one side of the fixing part opposite to the pin connection part and bent in a reverse direction; an elastic arm obliquely extended from an end terminal of the bending part and slanted to the front side for forming an acute angle by intersecting the first direction; and a contact part extended from an end terminal of the elastic arm. The fixing parts, pin connection parts and bending parts of the terminals are disposed on the circuit board, wherein at least the elastic arm closest to the terminals at the front side is partially protruded from the board edge of the circuit board, and the contact part is disposed outside the board edge.

Description

Terminal, electrical connector and electrical connection device

The invention relates to a terminal, an electrical connector and an electrical connecting device, in particular to a terminal, an electrical connector and an electrical connecting device for electrically connecting an electronic card.

Existing mobile communication devices usually require a subscriber identity module card (hereinafter referred to as a SIM card) to use the communication network provided by the telecommunications provider. In order to facilitate the user to install or replace the SIM card, in recent years, the design of the slot for inserting the slot of the SIM card has been opened on the side of the casing, so that the user can install or replace the SIM card without opening the casing.

However, since the circuit board of the general mobile communication device is disposed in the outer casing, the circuit board does not abut the outer casing, and the edge of the board and the outer casing have some spacing, and the existing electrical connectors for electrically connecting the SIM card are usually located. The extent of the board's edge, such that the electrical connector and the slot entrance on the housing create a large gap. This spacing tends to cause difficulties in SIM card installation, especially SIM cards with smaller sizes, such as a Mini SIM card and a Micro SIM card. Because the length of the SIM card is limited, if the terminal of the electrical connector is far from the slot entrance, the SIM card needs to be deeper into the slot to make the contact pad contact the terminal of the electrical connector. If the SIM card needs to be immersed in the slot, it is not easy to insert it into the position and it is not easy to pull it out.

Accordingly, it is an object of the present invention to provide a preferred support structure. The contact portion can extend beyond the circuit board to shorten the distance from the outer casing, and the electrical connector and the electrical connection device having the aforementioned terminal.

According to one aspect of the invention, an electrical connection device includes a circuit board and an electrical connector disposed on the circuit board. The electrical connector includes an insulative body and a plurality of terminals. The insulative housing extends longitudinally along a length direction and has a front side perpendicular to the length direction, a rear side opposite to the front side, and a plurality of terminal mounting slots. The front side protrudes from a side of the board of the circuit board. The terminal mounting grooves are respectively recessed in the insulating body in two rows along two sides parallel to the length direction, and the terminal mounting grooves on both sides are symmetrically arranged. The terminals are respectively arranged symmetrically symmetrically with respect to the terminals disposed on the terminal mounting slots and on both sides. Each of the terminals includes a fixing portion fixed to the corresponding terminal mounting groove, a pin portion, a bent portion, a resilient arm and a contact portion. The pin portion is soldered and fixed to the circuit board, and a side of the fixing portion extends in a first direction of a horizontal plane, and the first direction is perpendicular to the length direction. The bent portion extends from the fixing portion opposite to one side of the leg portion and is bent in the opposite direction so that the end faces the side of the leg portion. The elastic arm extends obliquely from a distal end of the curved portion toward a direction away from the fixed portion, and the elastic arm is deflected toward the front side to extend at an acute angle to the first direction in a direction in which the projection of the horizontal plane extends. The contact portion extends from the end of the resilient arm. The fixing portion, the pin portion and the bending portion of the terminals are located on the circuit board, wherein at least a resilient arm portion of the pair of terminals closest to the front side protrudes from the edge of the board and the contact portion is located at the edge of the board Outside.

Each of the terminal mounting slots has a slot portion and a slot portion extending from the slot portion. The slot portion closely receives the fixing portion of the corresponding terminal. The fixing portion of each terminal has a plurality of spurs respectively protruding from opposite sides and in a second direction, the second direction being parallel to the length direction, the spurs interfering with the inner wall defining the corresponding slot portion fixed.

The insulative housing further has two blocking portions respectively corresponding to the contact portions of the pair of terminals closest to the front side of the terminals to block the contact portions.

Among them, the angle is 45 degrees. The pin portion is flat for surface welding. The elastic arm has a reinforcing rib integrally formed by extrusion molding. The contact portion is dome-shaped.

The effect of the invention: by the configuration of the terminal and the design of the electrical connector, a part of the electrical connector can be protruded from the edge of the board of the circuit board, thereby shortening the contact of the terminal when the electrical connecting device is mounted in a casing The distance between the part and the side of the outer casing. In addition, the bent portion, the fixing portion and the pin portion of all the terminals are located in the range of the circuit board, and the pressure applied to the terminal can be supported by the circuit board and the insulating body, thereby ensuring the endurance of the electrical connector without placing the insulating body at The portion of the board that is suspended outside the board edge collapses.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

Referring to FIGS. 1 through 3, a preferred embodiment of the electrical connection device of the present invention comprises a circuit board 1 and an electrical connector 2 disposed on the circuit board 1. The electrical connector 2 includes an insulative housing 3 and a plurality of terminals 4.

The insulative housing 3 extends longitudinally along a length direction L and has a vertical shape A front side 31 which is straight to the length direction L, a rear side 32 which is opposite to the front side 31, and a plurality of terminal mounting grooves 33. The front side 31 protrudes from one of the board edges 11 of the circuit board 1. The terminal mounting grooves 33 are recessed into the insulating body 2 in two rows along two sides parallel to the longitudinal direction L, and the terminal mounting grooves 33 on both sides are symmetrically arranged. Each of the terminal mounting slots 33 has a slot portion 331 and a slot portion 332 extending from the slot portion 331 to opposite sides in the longitudinal direction L.

Referring to FIGS. 2 to 4, the terminals 4 are respectively disposed symmetrically symmetrically with respect to the terminals 4 disposed on the terminal mounting grooves 33 and located on both sides. Referring to FIG. 5 to FIG. 7 , each terminal 4 includes a fixing portion 41 , a pin portion 42 , a curved portion 43 , a resilient arm 44 , and a contact portion 45 . The fixing portion 41 has a plurality of ribs 411 which are respectively protruded from opposite sides and along a second direction II. In this embodiment, each of the fixing portions 41 has a spur 411 on both sides thereof. Further, in this embodiment, The second direction II is parallel to the longitudinal direction L, that is, the second direction II is the same direction as the longitudinal direction L. The fixing portion 41 is fixed in the corresponding terminal mounting groove 33, and is specifically tightly received in the slot portion 332 (see FIG. 8). The ribs 411 are interfered with the inner wall defining the corresponding slot portion 332. . The pin portion 42 extends from a side of the fixing portion 41 in a first direction I of the horizontal plane. The first direction I is perpendicular to the length direction L, that is, the first direction I is also perpendicular to the second direction II. . In the present embodiment, the pin portion 42 has a flat plate shape and is soldered and fixed to the circuit board 1 by surface soldering. The bent portion 43 extends from the side of the fixed portion 41 opposite to the side of the leg portion 42 and is bent in the opposite direction so that the end thereof faces the side of the leg portion 42, that is, the bent portion 43 is substantially C-shaped. The curved portion 43 can be elastically deformed to The elastic force of the elastic arm 44 is restored. The elastic arm 44 extends obliquely from the end of the curved portion 43 in a direction away from the fixed portion 41, and the elastic arm 44 is deflected toward the front side 31 to extend in the horizontal direction L and the length direction L of the projection in the horizontal plane (ie, the second The direction II) clips an acute angle α1 and an acute angle α2 with the first direction I, that is, the sum of the angle α1 and the angle α2 is the length direction L (ie, the second direction II) and the first direction The angle of I is 90 degrees. In the present embodiment, the angle α1 is 45 degrees, and the angle α2 is also 45 degrees. Further, the elastic arm 44 has a reinforcing rib 441 integrally molded to strengthen the strength of the elastic arm 44. The contact portion 45 extends from the end of the resilient arm 44. In the present embodiment, the contact portion 45 has a dome shape.

Referring to FIG. 1 , FIG. 4 , FIG. 6 and FIG. 8 , in the embodiment, the fixing portion 41 , the pin portion 42 , and the bending portion 43 of the terminals 4 are located on the circuit board 1 , that is, within the range of the circuit board 1 . . The resilient arms 44 of the pair of terminals 4 closest to the front side 31 of the terminals 4 project partially from the board edge 11 of the circuit board 1 and the contact portion 45 is located outside the board edge 11. The insulative housing 3 further has two blocking portions 34 respectively corresponding to the contact portions 45 of the pair of terminals 4 closest to the front side 31 of the terminals 4 to block the contact portion 45 when the force is lowered. The contact portion 45 is prevented from excessively moving down the contact portion 45. As shown in FIG. 8, the embodiment may be disposed in a casing (not shown) of a mobile communication device, and the board edge 11 of the circuit board 1 is adjacent to the side of the casing and spaced apart for a distance such as a SIM card. The electronic card 8 is electrically connected. By the elastic arms 44 of the terminals 4 being deflected toward the front side 31, the contact portions 45 are biased toward the front side 31 and the contact portions 45 of the pair of terminals 4 closest to the front side 31 are located at the edge 11 of the board In addition, the contact portion 45 of the terminal 4 can be shortened The distance of the sides of the casing, that is, the length of the electronic card 8 that needs to enter the casing can be shortened. In other words, since the entire contact portion 45 is deflected toward the side of the outer casing to shorten the distance from the side of the outer casing, the electronic card 8 having a short length, such as a small SIM card or a micro SIM card, can be reduced into the outer casing. The length is advantageous for the insertion and removal operation of the electronic card 8.

Furthermore, since the bent portion 43, the fixing portion 41, and the pin portion 42 of all the terminals 4 are located within the range of the circuit board 1, when the contact portion 45 of the terminal 4 comes into contact with the contact pad 81 of the electronic card 8, an electrical connection is made. The pressure of the electronic card 8 received by the terminal 4 can be supported by the circuit board 1 and the insulative housing 3, and the endurance of the electrical connector 2 can be ensured without causing the portion of the insulative housing 3 to be suspended outside the board edge 11 to be broken. Further, the contact portion 45 of the terminal 4 has a dome shape to ensure that the contact portion 45 can be in contact with the corresponding contact pad 81.

In summary, the structure of the terminal 4 and the design of the electrical connector 2 of the present embodiment can make a part of the electrical connector 2 protrude from the edge 11 of the circuit board 1, so that the contact portion 45 and the outer casing of the terminal 4 can be shortened. The distance of the sides, that is, the length of the electronic card 8 that needs to enter the casing, can be shortened to facilitate installation or replacement of the electronic card 8. In addition, the bent portion 43, the fixed portion 41, and the pin portion 42 of all the terminals 4 are located within the range of the circuit board 1. The pressure of the electronic card 8 received by the terminal 4 can be supported by the circuit board 1 and the insulative housing 3, thereby ensuring electrical connection. The force of the device 2 does not collapse and the portion of the insulating body 3 that is suspended outside the edge 11 of the board is broken.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are Still It is within the scope of the patent of the present invention.

1‧‧‧ boards

11‧‧‧ board edge

2‧‧‧Electrical connector

3‧‧‧Insulation body

31‧‧‧ front side

32‧‧‧ Back side

33‧‧‧Terminal mounting slot

331‧‧‧Slots Department

332‧‧‧Slots

34‧‧‧stops

4‧‧‧ Terminal

41‧‧‧ Fixed Department

411‧‧‧Spurs

42‧‧‧foot

43‧‧‧Bend

44‧‧‧Flexible arm

441‧‧‧Strengthened ribs

45‧‧‧Contacts

8‧‧‧Electronic card

81‧‧‧Contact pads

1 is a perspective view showing a preferred embodiment of the electrical connecting device of the present invention; FIG. 2 is another perspective view of FIG. 1; and FIG. 3 is an exploded perspective view showing an insulating body and a plurality of insulating bodies of the preferred embodiment. FIG. 4 is a view similar to FIG. 2, wherein the insulative housing of the preferred embodiment is not shown; FIG. 5 is a top view illustrating the terminal of the preferred embodiment; FIG. 6 is a top view illustrating the comparison Fig. 7 is a cross-sectional view taken along line VII-VII of Fig. 6; and Fig. 8 is a side view showing the relationship between the preferred embodiment and an electronic card.

1‧‧‧ boards

11‧‧‧ board edge

2‧‧‧Electrical connector

3‧‧‧Insulation body

31‧‧‧ front side

32‧‧‧ Back side

332‧‧‧Slots

34‧‧‧stops

4‧‧‧ Terminal

41‧‧‧ Fixed Department

42‧‧‧foot

43‧‧‧Bend

44‧‧‧Flexible arm

45‧‧‧Contacts

8‧‧‧Electronic card

81‧‧‧Contact pads

Claims (24)

A terminal includes: a fixing portion; a pin portion extending from a side of the fixing portion in a first direction of a horizontal plane; a bending portion extending from a side of the fixing portion opposite to the pin portion and Reversely bending the end thereof toward the side of the pin portion; a resilient arm extending obliquely from the end of the bent portion toward the direction gradually away from the fixing portion, and the extending direction of the projection of the elastic arm in the horizontal plane and the first direction An angle of an acute angle is sandwiched; and a contact portion extends from the end of the resilient arm. The terminal according to claim 1, wherein the angle is 45 degrees. The terminal according to claim 1, wherein the fixing portion has a plurality of spurs respectively protruding from opposite sides and in a second direction, the second direction being perpendicular to the first direction. The terminal according to claim 1, wherein the pin portion is in the form of a flat plate for surface welding. The terminal according to claim 1, wherein the elastic arm has a reinforcing rib integrally formed by extrusion molding. The terminal according to claim 1, wherein the contact portion has a dome shape. An electrical connector comprising: an insulative body extending longitudinally along a length and having a front side perpendicular to the length direction, a rear side opposite to the front side, and a plurality of terminal mounting slots, the terminal mounting slots are respectively recessed into the insulating body in two rows along two sides parallel to the length direction And the terminal mounting slots on both sides are symmetrically arranged; and the plurality of terminals are respectively arranged corresponding to the terminal mounting slots and the terminals on both sides are mirror-symmetrically arranged, and each terminal includes a fixing portion fixed to the corresponding In the terminal mounting groove, a pin portion extends from a side of the fixing portion in a first direction of a horizontal plane, and a bent portion extends from the side of the fixing portion opposite to the side of the pin portion and is reversed Bending to the side of the pin portion, a resilient arm extending obliquely from the end of the bent portion toward the fixed portion, and the elastic arm is deflected toward the front side to extend in the direction of the projection of the horizontal plane The longitudinal direction is at an acute angle and a contact portion extends from the end of the resilient arm. The electrical connector of claim 7, wherein each of the terminal mounting slots has a slot portion and a slot portion extending from the slot portion, the slot portion tightly receiving the fixing of the corresponding terminal unit. The electrical connector of claim 8, wherein the fixing portion of each terminal has a plurality of spurs respectively protruding from opposite sides, the spurs interfering with the inner wall defining the corresponding slot portion fixed. The electrical connector of claim 7, wherein the insulative housing further has two blocking portions respectively corresponding to the most of the terminals. The contact portion of the pair of terminals on the front side is located below to block the contact portions. The electrical connector of claim 7, wherein the angle is 45 degrees. The electrical connector of claim 11, wherein the first direction is perpendicular to the length direction. The electrical connector of claim 7, wherein the pin portion is flat for surface welding. The electrical connector of claim 7, wherein the resilient arm has a reinforcing rib integrally formed by extrusion. The electrical connector of claim 7, wherein the contact portion is dome-shaped. An electrical connection device comprising: a circuit board; and an electrical connector disposed on the circuit board, comprising an insulative body extending longitudinally along a length direction and having a front side perpendicular to the length direction, Conversely on the rear side of the front side, and a plurality of terminal mounting slots, the front side protrudes from a board edge of the circuit board, and the terminal mounting slots are respectively arranged in two rows along the two sides parallel to the length direction to the insulation The recessed body and the plurality of terminals are respectively disposed in the terminal mounting slots, each of the terminals includes a fixing portion fixed in the corresponding terminal mounting slot, and a pin portion is soldered and fixed to the circuit board, Fixed One side of the portion extends, a curved portion extending from the side of the fixed portion opposite to the side of the leg portion and bent in the opposite direction to the end of the leg portion, a resilient arm, gradually extending from the end of the bent portion An obliquely extending direction away from the fixing portion, and the elastic arm is deflected toward the front side to extend at an acute angle to the longitudinal direction of the projection of the horizontal plane, and a contact portion extending from the end of the elastic arm; The fixing portion, the pin portion and the bending portion of the terminal are located on the circuit board, wherein at least the elastic arm portion of the terminal closest to the front side protrudes from the board edge of the circuit board and the contact portion is located outside the board edge. The electrical connection device of claim 16, wherein each of the terminal mounting slots has a slot portion and a slot portion extending from the slot portion, the slot portion tightly receiving the fixing of the corresponding terminal unit. The electrical connection device of claim 17, wherein the fixing portion of each terminal has a plurality of spurs respectively protruding from opposite sides, the spurs interfering with the inner wall defining the corresponding slot portion fixed. The electrical connection device of claim 16, wherein the insulative housing further has two blocking portions respectively corresponding to the contact portions of the terminals closest to the front side of the terminals to block the Contact part. The electrical connection device according to claim 16, wherein The angle is 45 degrees. The electrical connection device according to claim 16 or 20, wherein the terminal mounting grooves on both sides are symmetrically arranged, and the terminals on both sides are mirror-symmetrically arranged, and the pin portions of the terminals are One of the side edges of the fixing portion extends in a first direction of a horizontal plane, the first direction being perpendicular to the length direction. The electrical connection device of claim 16, wherein the pin portion is in the form of a flat plate for surface welding. The electrical connecting device of claim 16, wherein the resilient arm has a reinforcing rib integrally formed by extrusion. The electrical connection device of claim 16, wherein the contact portion has a dome shape.