CN220527244U - Board-to-board connector - Google Patents

Abstract

The utility model discloses a board-to-board connector which comprises an insulating body, a plurality of first terminals and a plurality of second terminals, wherein the insulating body comprises two first side walls which extend longitudinally, two second side walls which extend transversely, a bottom wall which extend longitudinally and a slot, the slot is formed between the two first side walls, the two second side walls and the bottom wall, the first terminals are provided with first contact arms and first welding pins, the second terminals are provided with second contact arms and second welding pins, the first terminals and the second terminals are alternately arranged into at least one row along the longitudinal direction of the insulating body, the first welding pins are closer to the inner side position of the insulating body than the second welding pins, the distance between the first terminals and the second terminals is effectively reduced, the center distance between the terminals can be reduced to 0.2mm, the length of the board-to-board connector is reduced, and the board-to-board connector is beneficial to being mounted in a narrow space.

Description

Board-to-board connector

Technical Field

The present disclosure relates to unlocking jigs, and particularly to a board-to-board connector.

Background

Board-to-board connectors (Board to Board Connector, BTB) are connectors commonly used in electronic devices (e.g., mobile phones, tablet computers, etc.) to mechanically and electrically interconnect a motherboard of the electronic device with each module (e.g., display module, touch module, camera module, etc.). The structure of the existing board-to-board connector can refer to a board-to-board connector disclosed in CN217720119 patent, which comprises a lengthwise insulation body and two rows of conductive terminals fixed on the insulation body, wherein each row of conductive terminals is arranged at intervals along the length direction of the insulation body, each conductive terminal comprises a fixing portion, an elastic contact portion extending from one end of the fixing portion, and horizontal welding pins extending from the other end of the fixing portion to the outer side direction of the insulation body, the welding pins are arranged on the lower surface of the insulation body, the welding pins of each row of conductive terminals are arranged in a row and are equally spaced along the length direction of the insulation body, so that the space needs to be increased in order to avoid short circuit of adjacent welding pins, the occupied space of the conductive terminals in the length direction of the insulation body is increased, and finally the whole length of the board-to-board connector is increased, which is unfavorable for being installed in a narrow space.

Therefore, there is a need for a new board-to-board connector that overcomes the above-mentioned drawbacks.

Disclosure of Invention

The utility model aims to provide a board-to-board connector with reduced length.

In order to achieve the above purpose, the utility model adopts the following technical scheme: 1. the utility model provides a board-to-board connector, its includes lengthwise insulator, a plurality of first terminal and a plurality of second terminal, the insulator includes two first lateral walls of longitudinal extension, two second lateral walls of lateral extension, the diapire of longitudinal extension and slot, the slot forms two between first lateral wall, two the second lateral wall with between the diapire, first terminal be equipped with expose to the first contact arm of slot and expose to the first welding foot of diapire bottom surface, the second terminal be equipped with expose to the second contact arm of slot and expose to the second welding foot of diapire bottom surface, first terminal with the second terminal is followed the longitudinal alternation of insulator is at least one row, first welding foot is closer to the lateral inboard position of insulator than the second welding foot.

In a preferred embodiment, the first solder feet of the first terminals arranged in the same row are arranged in a row along the longitudinal direction; the second solder feet of the second terminals arranged in the same row are arranged in another row along the longitudinal direction.

In a preferred embodiment, the first bonding pads of the first terminals arranged in the same row are located on the lateral inner side of the insulating body, and the second bonding pads of the second terminals arranged in the same row are located on the lateral outer side of the insulating body.

In a preferred embodiment, the first welding foot is located below the first sidewall.

In a preferred embodiment, the insulating body is further provided with a central island portion located in the slot, and the second welding pin is located below the central island portion.

In a preferred embodiment, the first terminal and/or the second terminal adopt a blanking structure.

In a preferred embodiment, the first terminal includes a first fixing portion extending laterally, two first contact arms extending upward from the first fixing portion, and a first insertion arm, the first welding leg extends downward from the first fixing portion, the first fixing portion is fixed to the bottom wall, the two first contact arms are laterally opposite, one of the first contact arms and the first insertion arm are laterally spaced apart and are both fixed to the central island portion, and the other first contact arm is fixed to the first side wall.

In a preferred embodiment, the second terminal includes a second fixing portion extending laterally, two second contact arms extending upward from the second fixing portion and a second insertion arm, the second welding leg extends outward from the second fixing portion, the second fixing portion is fixed to the bottom wall, the two second contact arms are laterally opposite, one of the second contact arms and the second insertion arm are laterally spaced apart and are both fixed to the first side wall, and the other second contact arm is fixed to the central island.

In a preferred embodiment, the insulating body is provided with a central island portion located in the slot, the first terminal adopts a bent structure, and includes a first fixing portion fixed on the bottom wall, two first contact arms extending upward from the first fixing portion, a first insertion arm, a first welding leg extending from the lower end of the first insertion arm to the outside in a bending manner, and a first tail extending from the first welding leg to the outside in a bending manner, two first contact arms are transversely opposite, one of the first contact arms and the first insertion arm is fixed on the first side wall, the other first contact arm is fixed on the central island portion, the first insertion arm and one of the first contact arms are transversely spaced apart, the upper ends of the two first contact arms are connected through a first connecting arm, and the first welding leg and the first tail are horizontally arranged.

In a preferred embodiment, the insulating body is provided with a central island portion located in the slot, the second terminal adopts a bent structure, and the second terminal comprises a second fixing portion fixed on the bottom wall, two second contact arms extending upwards from the second fixing portion, a second insertion arm and a second welding leg extending from the lower end of the second insertion arm in an outward bending manner, wherein the two second contact arms are transversely opposite, one of the second contact arms and the second insertion arm is fixed on the first side wall, the other second contact arm is fixed on the central island portion, the second insertion arm and one of the second contact arms are transversely spaced apart, and the upper ends of the two second contact arms are connected through a second connecting arm.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the first terminals and the second terminals of the board-to-board connector are alternately arranged into at least one row along the longitudinal direction of the insulating body, the first welding pins are closer to the inner side of the insulating body than the second welding pins, the distance between the first terminals and the second terminals can be effectively reduced on the premise of meeting the necessary distance between the adjacent first welding pins and the necessary distance between the adjacent second welding pins, the center distance of the terminals can be reduced to 0.2mm, the length of the board-to-board connector is reduced, and the board-to-board connector is beneficial to being installed in a narrow space.

Drawings

Fig. 1A is a schematic perspective view of a board-to-board connector according to embodiment 1 of the present utility model.

Fig. 1B is a schematic perspective view of a board-to-board connector according to embodiment 1 of the present utility model at another angle.

Fig. 1C is a bottom view of the board-to-board connector of embodiment 1 of the present utility model.

Fig. 1D is a cross-sectional view of a board-to-board connector according to embodiment 1 of the present utility model.

Fig. 2 is a perspective view of an insulating body of a board-to-board connector according to embodiment 1 of the present utility model.

Fig. 3A is a perspective view of a first terminal of the board-to-board connector of embodiment 1 of the present utility model.

Fig. 3B is a perspective view of a second terminal of the board-to-board connector of embodiment 1 of the present utility model.

Fig. 4A is a perspective view of a center island of the board-to-board connector of embodiment 1 of the present utility model.

Fig. 4B is another perspective view of the island of the board-to-board connector of embodiment 1 of the present utility model.

Fig. 5A is a perspective view of armor for a board-to-board connector according to embodiment 1 of the present utility model.

Fig. 5B is another perspective view of armor of the board-to-board connector of embodiment 1 of the present utility model.

Fig. 6A is a perspective view of a board-to-board connector according to embodiment 2 of the present utility model.

Fig. 6B is a schematic perspective view of another angle of the board-to-board connector according to embodiment 2 of the present utility model.

Fig. 6C is a bottom view of the board-to-board connector of embodiment 2 of the present utility model.

Fig. 6D is a cross-sectional view of a board-to-board connector according to embodiment 2 of the present utility model.

Fig. 7A is a perspective view of a first terminal of a board-to-board connector according to embodiment 2 of the present utility model.

Fig. 7B is a perspective view of a second terminal of the board-to-board connector of embodiment 2 of the present utility model.

Fig. 8A is a perspective view of a board-to-board connector according to embodiment 3 of the present utility model.

Fig. 8B is a schematic perspective view of a board-to-board connector according to embodiment 3 of the present utility model at another angle.

Fig. 8C is a cross-sectional view of a board-to-board connector according to embodiment 3 of the present utility model.

Fig. 9A is a perspective view of a first terminal of a board-to-board connector according to embodiment 3 of the present utility model.

Fig. 9B is a perspective view of a second terminal of the board-to-board connector of embodiment 3 of the present utility model.

Fig. 10 is a perspective view of a second terminal of the board-to-board connector of embodiment 4 of the present utility model.

Detailed Description

Referring to fig. 1A to 5B, embodiment 1 of the present utility model discloses a board-to-board connector 100, wherein the board-to-board connector 100 is a female socket for being soldered on a circuit board, and includes an elongated insulative housing 10, a plurality of first terminals 21, a plurality of second terminals 22, a pair of centering islands 30 and a pair of armor 40.

Referring to fig. 2, the insulating body 10 includes two longitudinally extending first side walls 11, two transversely extending second side walls 12, a longitudinally extending bottom wall 13, a slot 14 and a central island 15. The two first side walls 11 are laterally symmetrical, the two second side walls 12 are longitudinally symmetrical, a slot 14 is formed between the two first side walls 11, the two second side walls 12 and the bottom wall 13, and a central island 15 is longitudinally extended and is located at the center of the slot 14 and is spaced apart from both the first side walls 11 and the second side walls 12. The lateral ends of the second side wall 12 are disconnected from the first side wall 11 to form a through groove 120 longitudinally penetrating the second side wall 12. The insulating body 10 is also provided with a fixing groove into which the first terminal 21 and the second terminal 22 are inserted and fixed upward.

Referring to fig. 3A, the first terminal 21 adopts a blanking structure, which includes a first fixing portion 211 extending transversely, two first contact arms 212 extending upward from the first fixing portion 211, a first insertion arm 213, and a first soldering leg 214 extending downward from the first fixing portion 211. The first fixing portion 211 is fixed in the bottom wall 13 of the insulating body 10. The two first contact arms 212 are laterally opposite, wherein one first contact arm 212 and the first insertion arm 213 are laterally spaced apart and are both inserted upwards into the central island 15, the other first contact arm 212 is inserted upwards into the first sidewall 11, and the upper ends of the two first contact arms 212 are respectively provided with a first protruding portion 215 located in the slot 14 for electrically contacting the conductive terminal of the mating connector. The first soldering leg 214 is located at the inner end of the first fixing portion 211 and is close to the bottom of the first insertion arm 213, exposed to the bottom surface of the bottom wall 13, for soldering to the circuit board.

Referring to fig. 3B, the second terminal 22 also adopts a blanking structure, which includes a second fixing portion 221 extending transversely, two second contact arms 222 extending upward from the second fixing portion 221, a second insertion arm 223, and a second soldering leg 224 extending downward from the second fixing portion 221. The second fixing portion 221 is fixed in the bottom wall 13 of the insulating body 10. The two second contact arms 222 are laterally opposite, wherein one second contact arm 222 and the second insertion arm 223 are laterally spaced apart and are both inserted into the first side wall 11 upwards, the other second contact arm 222 is inserted into the central island 15 upwards, and the upper ends of the two second contact arms 222 are respectively provided with a second protruding portion 225 located in the slot 14 for electrically contacting the conductive terminal of the mating connector. The second soldering leg 224 is located at the outer end of the second fixing portion 221 and is close to the bottom of the second insertion arm 223, exposed to the bottom surface of the bottom wall 13, for soldering to the circuit board.

As shown in fig. 1A to 3B, in the longitudinal direction of the insulating body 10, the first terminals 21 and the second terminals 22 are alternately arranged in two rows, that is, a second terminal 22 is arranged between every two adjacent first terminals 21, and a first terminal 21 is arranged between every two adjacent second terminals 22. Meanwhile, in the lateral direction of the insulative body 10, the first terminals 21 and the second terminals 22 are alternately aligned one by one. After being arranged in this way, the first welding pins 214 of the first terminal 21 are arranged in two rows and are positioned on the inner side of the insulating body 10 and close to the central island 15; the second welding pins 224 are also arranged in two rows and are located at two lateral sides of the insulating body 10 and respectively close to the corresponding first side walls 11.

Since the first terminals 21 and the second terminals 22 are alternately arranged, and the first solder feet 214 of the first terminals 21 are located on the inner side of the insulating body 10, and the second solder feet 224 of the second terminals 22 are located on the outer side of the insulating body 10, each adjacent first solder foot 214 and second solder foot 224 are staggered, the spacing between the first terminals 21 and the second terminals 22 can be effectively reduced on the premise of meeting the necessary spacing between the adjacent first solder feet 214 and the necessary spacing between the adjacent second solder feet 224, the center distance of the terminals can be reduced to 0.2mm, the length of the board-to-board connector 100 can be reduced, and the board-to-board connector is convenient to install in a narrow space.

As shown in fig. 4A to 4B, the central island 30 includes a reinforcing sheet 31 and a fixing sheet 32 extending longitudinally outward from the reinforcing sheet 31, wherein the reinforcing sheet 31 covers the longitudinal end of the central island 15 for reinforcing the strength of the central island 15, and the fixing sheet 32 is fixed to the bottom wall 13 of the insulating body 10. The reinforcing sheet 31 does not protrude beyond the outer wall surface of the central island 15, and does not increase the volume of the central island 15 additionally.

The armor 40 is assembled at two longitudinal ends of the insulation body 10 downwards, and comprises a top plate 41 shielding the top surface of the second side wall 12, a first inner flange 421 bending downwards from the inner side of the top plate 41, a second inner flange 422 bending downwards from the inner side of the top plate 41, a first side plate 431 bending downwards from the outer side of the top plate 41, a second side plate 432 bending downwards from the outer side of the top plate 41, elastic arms 44 extending along the inner wall surface of the first side wall 11 from two lateral ends of the side plate 43, and a welding machine 45 bending outwards from the bottom ends of the first side plate 41 and the second side plate 432. The second inner flange 422 is connected at both lateral ends thereof to the longitudinally outer sides of the two first inner flanges 431. The spring arms 44 pass through the through slots 120 of the body 10 and into the slots 14.

As shown in fig. 6A to 7B, embodiment 2 of the present utility model discloses another board-to-board connector 200, in which the first terminal 61 and the second terminal 62 of the board-to-board connector 200 are bent, the first terminal 61 includes a first fixing portion 611 fixed in the bottom wall 53 of the insulating body 50, two first contact arms 612 extending upward from the first fixing portion 611, a first inserting arm 613, a first soldering leg 614 extending from the lower end of the first inserting arm 613 in an outward direction, and a first tail portion 616 extending from the first soldering leg 614 in a further outward direction, the two first contact arms 612 are laterally opposite, one of the first contact arm 612 and the first inserting arm 613 is inserted upward and fixed in the first side wall 51, the other first contact arm 612 is inserted upward into the central island 55, and the two first contact arms 612 are respectively provided with a first protrusion 615 located in the slot 54. The first insertion arm 613 is laterally spaced from the one of the first contact arms 612, with the upper ends of the two being connected by a first connecting arm 617. The first soldering leg 614 and the first tail 616 are disposed horizontally, and the first soldering leg 614 is used for soldering on a circuit board.

The second terminal 62 includes a second fixing portion 621 fixed in the bottom wall 53 of the insulating body 50, two second contact arms 622 extending upward from the second fixing portion 621, a second insertion arm 623, and a second welding leg 624 extending outward from the lower end of the second insertion arm 623, the two second contact arms 622 being laterally opposite, one of the second contact arms 622 and the second insertion arm 623 being inserted upward and fixed in the first side wall 51, the other second contact arm 622 being inserted upward into the central island 55, the two second contact arms 622 being provided with contact protrusions 625 located in the slots 54, respectively. The second insertion arm 623 is laterally spaced from the one of the second contact arms 622, the upper ends of which are connected by a second connecting arm 627. The second solder feet 624 are horizontally disposed for soldering to a circuit board.

As shown in fig. 6B to 6D, in the longitudinal direction of the insulating body 50, the first terminals 61 and the second terminals 62 are alternately arranged in two rows, that is, a second terminal 62 is arranged between every two adjacent first terminals 61, and a first terminal 61 is arranged between every two adjacent second terminals 62. Meanwhile, in the lateral direction of the insulative body 10, the first terminals 61 and the second terminals 62 are alternately aligned one by one. After the arrangement, the first welding pins 614 and the second welding pins 624 are arranged in two rows, and each adjacent first welding pin 614 and second welding pin 624 are staggered, so that the distance between the first terminal 61 and the second terminal 62 can be effectively reduced, the center distance of the terminals can be reduced to 0.2mm on the premise of meeting the necessary distance between the adjacent first welding pins 614 and the necessary distance between the adjacent second welding pins 624, the length of the board-to-board connector 200 is reduced, and the board-to-board connector is beneficial to being installed in a narrow space.

Referring to fig. 8A to 9B, embodiment 3 of the present utility model discloses another board-to-board connector 300, which is a male connector, and the insulating body 70 does not have a central island. The first welding pins 814 of the first terminals 81 are located on the inner side of the insulating body 70, the second welding pins 824 of the second terminals 82 are located on the outer side of the insulating body 70, and the first terminals 81 and the second terminals 82 are also staggered one by one, so that the distance between the first terminals 81 and the second terminals 82 can be effectively reduced on the premise of meeting the necessary distance between the adjacent first welding pins 814 and the necessary distance between the adjacent second welding pins 824, the center distance of the terminals can be reduced to 0.2mm, the length of the board-to-board connector 300 can be reduced, and the board-to-board connector is beneficial to being installed in a narrow space.

The first contact arm 812 and the second contact arm 822 are respectively provided in an inverted U shape, and are respectively fixed to the first side wall 71, and the first welding leg 814 is formed by bending and extending from the lower end of the inner side of the first contact arm 812 to the inner side. The second soldering leg 824 is formed by bending and extending from the lower end of the inner side of the second contact arm 822 to the outer side.

As shown in fig. 10, embodiment 4 of the present utility model discloses another second terminal 90, in which the second solder leg 924 is bent and extended outward from the lower end of the outer side of the second contact arm 922, compared with embodiment 3.

In summary, the above description is only a preferred embodiment of the present utility model, and should not be taken as limiting the scope of the utility model, i.e. all simple and equivalent changes and modifications that are defined by the claims and the specification shall fall within the scope of the utility model.

Claims (10)

1. The utility model provides a board-to-board connector, its includes lengthwise insulator, a plurality of first terminal and a plurality of second terminal, insulator includes two first lateral walls of longitudinal extension, two second lateral walls of lateral extension, longitudinal extension's diapire and slot, the slot forms two between first lateral wall, two the second lateral wall with between the diapire, first terminal be equipped with expose to the first contact arm of slot and expose to the first welding foot of diapire bottom surface, the second terminal be equipped with expose to the second contact arm of slot and expose to the second welding foot of diapire bottom surface, its characterized in that: the first terminals and the second terminals are alternately arranged in at least one row along the longitudinal direction of the insulating body, and the first welding pins are closer to the inner lateral position of the insulating body than the second welding pins.

2. The board-to-board connector of claim 1, wherein: the first welding pins of the first terminals arranged in the same row are arranged in a row along the longitudinal direction; the second solder feet of the second terminals arranged in the same row are arranged in another row along the longitudinal direction.

3. The board-to-board connector of claim 1, wherein: the first welding pins of the first terminals arranged in the same row are positioned at the inner lateral side of the insulating body, and the second welding pins of the second terminals arranged in the same row are positioned at the outer lateral side of the insulating body.

4. The board-to-board connector of claim 1, wherein: the first welding pin is positioned below the first side wall.

5. The board-to-board connector of claim 1, wherein: the insulating body is also provided with a central island part positioned in the slot, and the second welding pin is positioned below the central island part.

6. The board-to-board connector of claim 1, wherein: the first terminal or/and the second terminal adopts a blanking structure.

7. The board-to-board connector of claim 5, wherein: the first terminal comprises a first fixing part extending transversely, two first contact arms extending upwards from the first fixing part and a first inserting arm, the first welding pin extends downwards from the first fixing part, the first fixing part is fixed on the bottom wall, the two first contact arms are transversely opposite, one first contact arm and the first inserting arm are transversely spaced apart and are both fixed on the central island part, and the other first contact arm is fixed on the first side wall.

8. The board-to-board connector of claim 5, wherein: the second terminal comprises a second fixing part extending transversely, two second contact arms extending upwards from the second fixing part and a second inserting arm, the second welding pin extends outwards from the second fixing part, the second fixing part is fixed on the bottom wall, the two second contact arms are transversely opposite, one second contact arm and the second inserting arm are transversely spaced apart and are both fixed on the first side wall, and the other second contact arm is fixed on the central island.

9. The board-to-board connector of claim 1, wherein: the insulation body is provided with a central island part positioned in the slot, the first terminal adopts a bent structure and comprises a first fixing part fixed on the bottom wall, two first contact arms extending upwards from the first fixing part, a first inserting arm, a first welding foot extending from the lower end of the first inserting arm in an outward bending mode and a first tail extending from the first welding foot further in an outward direction, two first contact arms are transversely opposite, one of the first contact arms and the first inserting arm is fixed on the first side wall, the other first contact arm is fixed on the central island part, the first inserting arm and one of the first contact arms are transversely spaced apart, the upper ends of the first contact arms and the first inserting arm are connected through a first connecting arm, and the first welding foot and the first tail are horizontally arranged.

10. The board-to-board connector of claim 1, wherein: the insulating body is provided with a central island part positioned in the slot, the second terminal adopts a bent structure and comprises a second fixing part fixed on the bottom wall, two second contact arms extending upwards from the second fixing part, a second insertion arm and a second welding foot extending outwards from the lower end of the second insertion arm in a bent mode, the two second contact arms are transversely opposite, one second contact arm and the second insertion arm are fixed on the first side wall, the other second contact arm is fixed on the central island part, the second insertion arm and one second contact arm are transversely spaced, and the upper ends of the two second contact arms are connected through a second connecting arm.