Board end connector and connector combination

Abstract

The utility model discloses a board end connector and a connector combination, the board end connector comprises an insulating base, the insulating base is provided with a rear wall and a plurality of first accommodating grooves penetrating through the rear wall front and back, the plurality of accommodating grooves are arranged into at least two rows along the up-down direction, and each row of first accommodating grooves are arranged side by side along the left-right direction; the rear wall extends backwards to form a reinforcing rib, and the reinforcing rib is located between the upper row of first containing grooves and the lower row of first containing grooves when viewed from back to front. The upper surface of the reinforcing rib extends upwards to form a plurality of upper limiting parts, and the lower surface of the reinforcing rib extends downwards to form a plurality of lower limiting parts; the plurality of first terminals are respectively installed in the plurality of first accommodating grooves, the connecting parts of the first terminals in the upper row are limited by two upper limiting parts on the left and right sides of the first terminals in the left-right direction, and the connecting parts of the first terminals in the lower row are limited by two lower limiting parts on the left and right sides of the first terminals in the left-right direction. Therefore, the upper limiting part or the lower limiting part limits the deflection of the connecting part along the left-right direction, the plugging difficulty is reduced, and the first terminal or the circuit board is prevented from being damaged.

Description

Technical field

[0001] The utility model relates to a board end connector and a connector combination, in particular to a board end connector and a connector combination which can limit terminal deflection and reduce the difficulty of insertion. [Background Technology]

[0002] There is an existing board-end connector, which includes an insulating base and multiple board-end terminals. The insulating base has multiple terminal receiving slots that pass through from front to back. The multiple terminal receiving slots are arranged in two rows in the up-down direction, and each row of terminal receiving slots is arranged side by side in the left-right direction, and the multiple terminal receiving slots respectively accommodate multiple board-end terminals. Each board-end terminal has a fixing portion fixed to the terminal receiving slot and a pin extending from the insulating base from the fixing portion, and the pin is used to be plugged into the circuit board; however, since the pin is directly plugged into the circuit board after extending from the insulating base, during the process of plugging the pin into the circuit board, the pin is easily deflected due to its excessive length in the up-down direction, resulting in scratches and collisions between the pin and other parts of the circuit board, thereby causing damage to the board-end terminal or the circuit board, thereby affecting the service life of the board-end connector. At the same time, if the pin deflects, it cannot be accurately aligned with the plug-in part of the circuit board, which will also increase the difficulty of plugging the board-end terminal and the circuit board, affecting the assembly efficiency.

[0003] Those skilled in the art usually solve the above-mentioned problem by increasing the thickness of the pins along the left-right direction or reducing the distance between the upper and lower rows of terminals to shorten the length of the pins. However, as the current amount of current that terminals are required to carry is increasing, if the thickness of the pins along the left-right direction is increased, then in order to prevent the terminals from short-circuiting, the distance between two adjacent terminals must be increased, which increases the space occupied by the connector on the circuit board and is not in line with the trend of miniaturization. If the distance between the upper and lower rows of terminals is reduced, the size of the terminals cannot be increased to prevent the terminals from short-circuiting, resulting in the terminals being unable to carry the required current.

[0004] Therefore, it is necessary to design an improved board-end connector and connector combination to solve the above technical problems. [Utility Model Content]

[0005] In response to the problems of the background technology, the purpose of the present invention is to provide a board-end connector and connector combination in which the connection part of the first terminal in the upper row is limited to the left and right by two upper limit parts located on the left and right sides thereof, and the connection part of the first terminal in the lower row is limited to the left and right by two lower limit parts located on the left and right sides thereof, thereby limiting the terminal deviation and reducing the difficulty of insertion.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a board-end connector for mounting on a circuit board, characterized in that it comprises: an insulating base, the insulating base comprising a rear wall and a plurality of first receiving grooves penetrating the rear wall in the front-to-back direction, the plurality of first receiving grooves being arranged in at least two rows in the up-down direction, and the first receiving grooves in each row being arranged side by side in the left-right direction; a reinforcing rib extending rearward from the rear wall, and the reinforcing rib being located between the upper and lower rows of first receiving grooves when viewed from the back to the front; a plurality of upper limit portions extending upward from the upper surface of the reinforcing rib, The lower surface extends downward to form a plurality of lower limit portions; and the upper limit portion and the lower limit portion are aligned with each other in the up and down directions; a plurality of first terminals are respectively installed in the plurality of first receiving grooves from back to front, each first terminal having a fixing portion fixed to the first receiving groove and a connecting portion extending backward from the fixing portion to the first receiving groove, and a pin is extended downward from the connecting portion, and the pin is used to be plugged into the circuit board, the connecting portion of the upper row of first terminals is limited left and right by the two upper limit portions located on the left and right sides thereof, and the connecting portion of the lower row of first terminals is limited left and right by the two lower limit portions located on the left and right sides thereof.

[0007] Furthermore, the upper limit portion and the lower limit portion are both connected to the rear wall forward; the first terminal also includes a protrusion, which is formed by protruding from the fixing portion in the left and right directions; the fixing portion also includes an upper positioning portion and a lower positioning portion, and the positioning portion and the lower positioning portion are respectively located above and below the protrusion in the up and down directions; the upper positioning portion is limited to the left and right by the two groove walls of the first receiving groove located on its left and right sides, and the lower positioning portion is limited to the left and right by the two groove walls of the first receiving groove located on its left and right sides; and the protrusion is limited up and down by the two groove walls of the first receiving groove located on its upper and lower sides.

[0008] Furthermore, a partition wall is located between two adjacent first receiving grooves along the left-right direction, and the first receiving groove has a groove on one side along the left-right direction, and the groove extends backward through the rear surface of the partition wall; the upper limit portion is connected to the partition wall forward, and a connecting surface connects the upper limit portion and the bottom wall of the groove along the front-to-back direction, and the upper limit portion is closer to the reinforcing rib relative to the bottom wall of the groove in the up-down direction; the first terminal also has a protrusion protruding from the fixing portion along the left-right direction, the protrusion is located at the center of the fixing portion along the up-down direction, and the protrusion is located at the center of the fixing portion along the front-to-back direction, the first terminal is inserted into the first receiving groove from back to front, and the protrusion is limited to the groove.

[0009] Furthermore, it also includes a plurality of second receiving grooves that penetrate the rear wall in the front-to-back direction, and the plurality of second receiving grooves are arranged in at least two rows in the up-down direction; a plug-in cavity is recessed backward from the insulating base, the plug-in cavity is located in front of the rear wall, and the first receiving groove and the second receiving groove are both connected to the plug-in cavity, and an upper positioning block is extended downward from the top wall of the insulating base, and the upper positioning block has a plurality of mounting grooves, each mounting groove penetrates the upper positioning block in the front-to-back direction and is connected to the second receiving groove; a plurality of second limiting portions are formed by extending upward from the upper surface of the reinforcing rib, and a plurality of rear limiting portions are formed by extending backward from the rear surface of the reinforcing rib; a plurality of second terminals are respectively installed in the plurality of second receiving grooves from back to front, and each second terminal has a second fixing portion fixed to the second receiving groove. , a second contact portion extending forward from the second fixing portion to the second receiving groove, and a second connecting portion extending backward from the second fixing portion to the second mounting groove, a second pin extending downward from the second connecting portion, and the second pin being used to be plugged into the circuit board; the second contact portion has a mounting portion and a docking portion, and the mounting portion and the docking portion are arranged opposite to each other in the up and down directions; wherein, the mounting portion of the upper row of second terminals is received in the mounting groove, and is limited left and right by two groove walls of the mounting groove located on its left and right sides, the docking portion of the upper row of second terminals extends an upper positioning block, and the second connecting portion of the upper row of second terminals is limited left and right by two second limiting portions located on the left and right sides, and the second pin of the upper row of second terminals is limited left and right by two rear limiting portions located on its left and right sides.

[0010] The present invention also adopts the following technical solution: a connector combination, characterized in that it includes: a board-end connector and a wire-end connector that are connected to each other in the front-to-back direction; the board-end connector is used to be installed on a circuit board, including: an insulating base, the insulating base includes a rear wall and a plurality of first receiving grooves that penetrate the rear wall in the front-to-back direction, the plurality of first receiving grooves are arranged in at least two rows in the up-down direction, and each row of first receiving grooves is arranged side by side in the left-right direction; a reinforcing rib is formed by extending rearward from the rear wall, and when viewed from the back to the front, the reinforcing rib is located between the upper and lower rows of first receiving grooves; a reinforcing rib is extended upward from the upper surface of the reinforcing rib to form a Multiple upper limit portions extend downward from the lower surface of the reinforcing rib to form multiple lower limit portions; and the upper limit portions and the lower limit portions are aligned with each other in the up and down directions; multiple first terminals are respectively installed in the multiple first receiving grooves from back to front, each first terminal has a fixing portion fixed to the first receiving groove and a connecting portion extending backward from the fixing portion to the first receiving groove, and a pin is extended downward from the connecting portion to form a pin for being plugged into the circuit board, the connecting portion of the upper row of first terminals is limited to the left and right by the two upper limit portions located on the left and right sides thereof, and the connecting portion of the lower row of first terminals is limited to the left and right by the two lower limit portions located on the left and right sides thereof.

[0011] Furthermore, the wire end connector includes an insulating body, the insulating body having a plurality of terminal receiving grooves and a side wall located on one side of the terminal receiving groove; at least one elastic arm extends forward from the side wall, and a stop groove is formed by being recessed backward from the front end of the elastic arm, the stop groove having a first stop wall, two second stop walls respectively located at the left and right ends of the first stop wall, and a stop portion located below the first stop wall, wherein the front end surface of the stop portion is located at the center position of the elastic arm in the front-to-back direction; the stop groove also has a protrusion that is arranged opposite to the first stop wall in the up-down direction; the plurality of wire end terminals are respectively accommodated in the plurality of terminal receiving grooves, and at least one wire end terminal has a stop portion, and when the wire end terminal is inserted into the terminal receiving groove from back to front, the elastic arm elastically displaces in a direction close to the side wall; when the wire end terminal is fully inserted into the terminal receiving groove, the stop portion is accommodated in the stop groove and abuts against the stop portion backward, and the stop portion is located between the two second stop walls in the left-right direction, and between the first stop wall and the protrusion in the up-down direction; in the up-down direction, the first stop wall is closer to the wire end terminal than the side wall.

[0012] Furthermore, the upper limit portion and the lower limit portion are both connected to the rear wall forward; the first terminal also includes a protrusion, which is formed by protruding from the fixing portion in the left and right directions; the fixing portion also includes an upper positioning portion and a lower positioning portion, and the positioning portion and the lower positioning portion are respectively located above and below the protrusion in the up and down directions; the upper positioning portion is limited to the left and right by the two groove walls of the first receiving groove located on its left and right sides, and the lower positioning portion is limited to the left and right by the two groove walls of the first receiving groove located on its left and right sides; and the protrusion is limited up and down by the two groove walls of the first receiving groove located on its upper and lower sides.

[0013] Furthermore, a partition wall is located between two adjacent first receiving grooves along the left-right direction, and the first receiving groove has a groove on one side along the left-right direction, and the groove extends backward through the rear surface of the partition wall; the upper limit portion is connected to the partition wall forward, and a connecting surface connects the upper limit portion and the bottom wall of the groove along the front-to-back direction, and the upper limit portion is closer to the reinforcing rib relative to the bottom wall of the groove in the up-down direction; the first terminal also has a protrusion protruding from the fixing portion along the left-right direction, the protrusion is located at the center of the fixing portion along the up-down direction, and the protrusion is located at the center of the fixing portion along the front-to-back direction, the first terminal is inserted into the first receiving groove from back to front, and the protrusion is limited to the groove.

[0014] Furthermore, the board-end connector also includes a plurality of second receiving grooves that penetrate the rear wall in the front-to-back direction, and the plurality of second receiving grooves are arranged in at least two rows in the up-down direction; the plurality of second terminals are respectively installed in the plurality of second receiving grooves from the back to the front, and each second terminal has a second fixing portion fixed to the second receiving groove, a second contact portion extending forward from the second fixing portion to the second receiving groove, and a second connecting portion extending backward from the second fixing portion to the second mounting groove, a second pin extending downward from the second connecting portion to form, and the second pin is used to be plugged into the circuit board; the second contact portion has a mounting portion and a docking portion, and the mounting portion and the docking portion are arranged opposite to each other in the up-down direction; A plug-in cavity is recessed backward and located in front of the rear wall, and both the first receiving groove and the second receiving groove are connected to the plug-in cavity. An upper positioning block is formed downwardly extending from the top wall of the insulating base, and the upper positioning block has a plurality of mounting grooves, each mounting groove passes through the upper positioning block along the front-to-back direction and is connected to the second receiving groove; a plurality of second limiting portions are formed upwardly extending from the upper surface of the reinforcing rib, wherein the mounting portion of the upper row of second terminals is received in the mounting groove and is limited left and right by the two groove walls of the mounting groove located on the left and right sides thereof, the docking portion of the upper row of second terminals extends out of the upper positioning block, and the second connecting portion of the upper row of second terminals is limited left and right by the two second limiting portions located on the left and right sides.

[0015] Furthermore, a plurality of rear limiting portions are extended rearward from the rear surface of the reinforcing rib, and the pins of the upper row of second terminals are limited left and right by two rear limiting portions located on the left and right sides thereof.

[0016] Compared with the prior art, the present invention has the following beneficial effects: by setting the connection part of the upper row of first terminals to be limited left and right by two upper limit parts located on the left and right sides thereof, and the connection part of the lower row of first terminals to be limited left and right by two lower limit parts located on the left and right sides thereof, the upper limit parts limit the deflection of the connection part of the upper row of first terminals in the left and right directions, and the lower limit parts limit the deflection of the connection part of the lower row of first terminals in the left and right directions, and by setting the upper limit parts and the lower limit parts to be aligned with each other in the up and down directions, the upper row of first terminals and the lower row of second terminals are aligned and limited, thereby facilitating the accurate alignment of the pins with the corresponding parts of the circuit board, while reducing the difficulty of insertion between the first terminals and the circuit board and improving the assembly efficiency, it also avoids the deflection of the connection part in the left and right directions during the process of the pins being inserted into the circuit board, thereby further causing the pins connected upward to the connection part to deflect in the left and right directions, causing the pins to scratch and collide with other parts of the circuit board, thereby causing damage to the first terminals or the circuit board.

Brief Description of the Drawings

[0017] Figure 1 It is a three-dimensional schematic diagram of the board-end connector of the present utility model;

[0018] Figure 2 For the utility model Figure 1 3D exploded view of

[0019] Figure 3 For the utility model Figure 2 A partial enlarged view of A in FIG;

[0020] Figure 4 This is a three-dimensional schematic diagram of the board-end connector of the present invention from another perspective;

[0021] Figure 5 For the utility model Figure 4 A three-dimensional schematic diagram of the insulating base of the mid-board connector;

[0022] Figure 6 It is a top view of the board-end connector of the present utility model;

[0023] Figure 7 For the utility model Figure 6 Cross-sectional view along BB;

[0024] Figure 8 For the utility model Figure 6 Cross-sectional view along CC;

[0025] Figure 9 For the utility model Figure 6 Cross-sectional view along DD;

[0026] Figure 10 For the utility model Figure 6 Cross-sectional view along EE;

[0027] Figure 11 This is a three-dimensional schematic diagram of the wire end connector of the present invention with the wire end terminals removed;

[0028] Figure 12 This is a cross-sectional view of the board-end connector and the line-end connector of the present invention before docking;

[0029] Figure 13 This is a cross-sectional view of the board-end connector and the line-end connector of the present invention after docking;

[0030] Description of the accompanying drawings for the specific embodiments:

[0031]

[0032] [Specific implementation method]

[0033] In order to facilitate a better understanding of the purpose, structure, features and effects of the present invention, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods.

[0034] For the accuracy of description, please refer to the direction in this article. Figure 1 For reference, the term "X-axis direction" refers to the direction parallel to the plug-in direction of the board-end connector 100 and the line-end connector 400, that is, the front-to-back direction (where the positive direction of the X-axis is the front). The term "Y-axis direction" refers to the horizontal direction perpendicular to the plug-in direction of the board-end connector 100 and the line-end connector 400, that is, the left-to-right direction (where the positive direction of the Y-axis is the left). The term "Z-axis direction" refers to the vertical direction perpendicular to the plug-in direction of the board-end connector 100 and the line-end connector 400, that is, the up-down direction (where the positive direction of the Z-axis is the top). Among them, the X-axis direction, the Y-axis direction and the Z-axis direction together constitute the three orthogonal directions of the connector. For the convenience of description, the up and down, left and right, and front and back directions in this utility model are relative positions and do not constitute a limitation to the implementation. The X-axis direction, the Y-axis direction and the Z-axis direction of the board-end connector 100 and the connector combination can be customized according to the specific structure of the product and the perspective of the drawings, and this utility model does not make specific limitations.

[0035] like Figure 12 and Figure 13 As shown, the connector combination of the present invention includes a board-end connector 100 and a wire-end connector 400 that are connected to each other in the front-to-back direction. The board-end connector 100 is installed on a circuit board P, and the board-end connector 100 includes an insulating base 1 and a plurality of first terminals 2 and a plurality of second terminals 3 fixed to the insulating base 1. The wire-end connector 400 includes an insulating body 4 and a plurality of wire-end terminals 5 fixed to the insulating body 4.

[0036] like Figure 4 As shown, the insulating base 1 includes a rear wall 10 and an insertion cavity 14 formed by a recessed shape extending rearward from the insulating base 1, with the insertion cavity 14 located in front of the rear wall 10. A plurality of first receiving slots 12 and a plurality of second receiving slots 13 extend through the rear wall 10 in the front-to-back direction and connect forward to the insertion cavity 14. The plurality of first receiving slots 12 are arranged in two rows in the vertical direction, with each row of first receiving slots 12 arranged side by side in the left-to-right direction. The plurality of second receiving slots 13 are arranged in two rows in the vertical direction, and are arranged side by side with the plurality of first receiving slots 12 in the left-to-right direction. In other embodiments, the plurality of first receiving slots 12 may be arranged in one row, three rows, or more in the vertical direction, and the plurality of second receiving slots 13 may be arranged in one row, three rows, or more in the vertical direction. In addition, the plurality of first receiving slots 12 and the plurality of second receiving slots 13 may not be arranged side by side in the left-to-right direction, that is, the plurality of first receiving slots 12 and the plurality of second receiving slots 13 may be staggered in the vertical direction. In the same row of first receiving slots 12, a partition wall 101 is provided between two adjacent first receiving slots 12 on the left and right sides. A groove 121 is formed by extending from the first receiving slot 12 to the left and right sides, respectively. The groove 121 extends rearward through the partition wall 101. In other embodiments, the first receiving slot 12 may also extend only to the left or right to form a groove 121.

[0037] like Figure 1 and Figure 2 As shown, a reinforcing rib 11 extends rearward from the rear wall 10. The reinforcing rib 11 extends in the left-right direction and, viewed from the rear to the front, is located between the upper and lower rows of first receiving slots 12. Simultaneously, the reinforcing rib 11 is located between the upper and lower rows of second receiving slots 13. A plurality of upper limiting portions 111 and a plurality of second limiting portions 113 extend upward from the upper surface of the reinforcing rib 11. A plurality of lower limiting portions 112 extend downward from the lower surface of the reinforcing rib 11. A plurality of rear limiting portions 114 extend rearward from the rear surface of the reinforcing rib 11. The plurality of upper limiting portions 111, the plurality of lower limiting portions 112, and the plurality of second limiting portions 113 are all connected forwardly to the rear wall 10, wherein the upper limiting portion 111 and the lower limiting portion 112 are respectively located behind the upper row of first receiving slots 12 and the lower row of first receiving slots 12, and are aligned with each other in the vertical direction; the plurality of second limiting portions 113 and the plurality of rear limiting portions 114 are all located behind the upper row of second receiving slots 13. In other embodiments, the upper limiting portion 111 may not be connected to the rear wall 10, that is, there may be a gap between the upper limiting portion 111 and the rear wall 10 in the front-to-back direction, and the lower limiting portion 112 or the second limiting portion 113 may also have a gap between them and the rear wall 10 in the front-to-back direction; and the upper limiting portion 111 and the lower limiting portion 112 may also be staggered in the vertical direction.

[0038] like Figure 3 As shown, in the upper row of first receiving grooves 12, a connecting surface 122 connects the bottom wall of the groove 121 and the upper limit portion 111 in the front-to-back direction, and the upper limit portion 111 is closer to the reinforcing rib 11 relative to the bottom wall of the groove 121 in the top-to-bottom direction, that is, the upper limit portion 111 is lower than the bottom wall of the groove 121 in the top-to-bottom direction. In the lower row of first receiving grooves 12, a connecting surface 122 connects the top wall of the groove 121 and the lower limit portion 112 in the front-to-back direction, and the lower limit portion 112 is closer to the reinforcing rib 11 relative to the top wall of the groove 121 in the top-to-bottom direction, that is, the lower limit portion 112 is higher than the top wall of the groove 121 in the top-to-bottom direction.

[0039] like Figure 4 and Figure 5 As shown, an upper positioning block 141 is extended downward from the top wall of the insertion cavity 14, and the upper positioning block 141 has a plurality of mounting grooves 1411. Each mounting groove 1411 passes through the upper positioning block 141 in the front-to-back direction and passes through the upper positioning block 141 downward, and the plurality of mounting grooves 1411 are respectively connected rearward to the plurality of upper-row second receiving grooves 13.

[0040] like Figures 7 to 10As shown, a plurality of first terminals 2 are mounted in corresponding first receiving slots 12 from back to front. Each first terminal 2 has a fixing portion 21 fixed to the first receiving slot 12 and a connecting portion 22 extending rearward from the fixing portion 21 into the first receiving slot 12. A pin 23 extends downward from the connecting portion 22 for insertion into the circuit board P. Each first terminal 2 also includes a protrusion 211 extending from the fixing portion 21 in the left-right direction. The protrusion 211 is located at the center of the fixing portion 21 in the front-to-back direction and also in the center of the fixing portion 21 in the top-to-bottom direction. The fixing portion 21 also includes an upper positioning portion 212 and a lower positioning portion 213. The upper positioning portion 212 and the lower positioning portion 213 are located above and below the protrusion 211, respectively. In the process of the upper row of first terminals 2 being loaded into the upper row of first receiving grooves 12 from back to front, the fixing portion 21 first enters between the two upper limit portions 111 on its left and right sides, so that the fixing portion 21 is predetermined to be located between the two upper limit portions 111 on its left and right sides, thereby causing the protruding portion 211 to be loaded into the groove 121 along the guiding direction of the upper limit portions 111 and the connecting surface 122. When the upper row of first terminals 2 are completely loaded into the upper row of first receiving grooves 12, the protruding portion 211 is received in the groove 121 and is limited in upper and lower positions by the two groove walls of the groove 121 on its upper and lower sides. The upper positioning portion 212 is limited in left and right positions by the two groove walls of the first receiving groove 12 on its left and right sides, and the lower positioning portion 213 is limited in left and right positions by the two groove walls of the first receiving groove 12 on its left and right sides. At the same time, the connecting portion 22 of the upper row of first terminals 2 is limited in left and right positions by the two upper limit portions 111 on its left and right sides. The process of installing the lower row of first terminals 2 into the lower row of first receiving grooves 12 from back to front is the same as the process of installing the upper row of first terminals 2 into the upper row of first receiving grooves 12. After the lower row of first terminals 2 are completely installed into the lower row of first receiving grooves 12, the connecting portion 22 of the lower row of first terminals 2 is limited to the left and right by the two lower limit portions 112 located on the left and right sides thereof.

[0041] like Figure 1 、 Figure 4 and Figure 9As shown, a plurality of second terminals 3 are mounted in corresponding second receiving slots 13 from back to front. Each second terminal 3 includes a second fixing portion 32 fixed to the second receiving slot 13, a second contact portion 31 extending forward from the second fixing portion 32 into the second receiving slot 13, and a second connecting portion 33 extending rearward from the second fixing portion 32 into the second receiving slot 13. A second pin 34 extends downward from the second connecting portion 33 and is plugged into the circuit board P. The second contact portion 31 includes a mounting portion 311 and a mating portion 312. The mounting portion 311 and the mating portion 312 are disposed opposite each other in the vertical direction, with the mating portion 312 extending forwardly beyond the mounting portion 311 to facilitate mating between the mating portion 312 and a corresponding component of the cable end connector 400. In other embodiments, the mating portion 312 may be flush with the mounting portion 311 in the front-to-back direction, as long as this does not affect mating between the second terminal 3 and the corresponding component of the cable end connector 400. When the upper row of second terminals 3 are completely installed in the upper row of second receiving grooves 13, the mounting portion 311 is received in the mounting groove 1411 and limited between the two groove walls of the mounting groove 1411 on its left and right sides along the left and right directions, and the docking portion 312 of the upper row of second terminals 3 extends out of the upper positioning block 141; at the same time, the second connecting portion 33 of the upper row of second terminals 3 is limited left and right by the two second limiting portions 113 located on its left and right sides, and the second pin 34 of the upper row of second terminals 3 is limited left and right by the two rear limiting portions 114 located on its left and right sides.

[0042] like Figures 11 to 13 As shown, the insulating body 4 is inserted into the plug-in cavity 14 along the front-to-back direction. The insulating body 4 includes a plurality of terminal receiving grooves 41 and a side wall 42 located on one side of the terminal receiving groove 41. The plurality of terminal receiving grooves 41 are arranged in two rows along the up-down direction, and each row of terminal receiving grooves 41 is arranged side by side along the left-right direction. A plurality of elastic arms 43 are respectively extended forward from the side wall 42, and a stop groove 430 is formed by being recessed backward from the front end of the elastic arm 43. The stop groove 430 has a first stop wall 431, two second stop walls 432 located at the left and right ends of the first stop wall 431, and a stop portion 433 extending downward from the first stop wall 431, and the stop portion 433 is located between the two second stop walls 432 along the left-right direction. At the same time, along the front-to-back direction, the front end surface 433a of the stopper 433 is located at the center of the elastic arm 43. In other embodiments, the stopper 433 can also be formed by protruding from the second stopper 433 in the left-to-right direction. As long as the stopper 433 is located within the stopper groove 430 along the left-to-right direction and the front end surface 433a of the stopper 433 along the front-to-back direction is located at the center of the elastic arm 43, it does not affect its subsequent contact with the wire end terminal 5. The stopper groove 430 also has a protrusion 434, which is arranged opposite the first stopper wall 431 along the top-to-bottom direction.

[0043] Multiple terminal terminals 5 are installed in the terminal receiving slots 41 from back to front, and the multiple terminal terminals 5 are respectively connected to the multiple first terminals 2. The first stop wall 431 is closer to the terminal terminal 5 than the side wall 42 in the vertical direction. Each terminal 5 has a stop portion 51. When the terminal 5 is inserted into the terminal receiving slot 41 from back to front, the terminal 5 and the stop portion 433 squeeze each other in the vertical direction, and the elastic arm 43 elastically displaces toward the side wall 42. When the terminal 5 is fully inserted into the terminal receiving slot 41, the stop portion 51 is received in the stop slot 430 and rearwardly abuts against the front end surface 433a of the stop portion 433. The stop portion 51 is confined between the two second stop walls 432 in the left-right direction and between the first stop wall 431 and the protrusion 434 in the vertical direction.

[0044] In summary, the board-end connector 100 and the connector assembly of the present invention have the following beneficial effects:

[0045] (1) By setting the connection portion 22 of the upper row first terminal 2 to be limited left and right by the two upper limit portions 111 located on the left and right sides thereof, and the connection portion 22 of the lower row first terminal 2 to be limited left and right by the two lower limit portions 112 located on the left and right sides thereof, the upper limit portion 111 limits the deflection of the connection portion 22 of the upper row first terminal 2 along the left and right directions, and the lower limit portion 112 limits the deflection of the connection portion 22 of the lower row first terminal 2 along the left and right directions, and by setting the upper limit portion 111 and the lower limit portion 112 to be aligned with each other in the up and down directions, the upper row first terminal 2 The terminal 2 and the second terminal 3 in the lower row are aligned and limited, so that the pin 23 can be accurately aligned with the corresponding part of the circuit board P. While reducing the difficulty of insertion between the first terminal 2 and the circuit board P and improving the assembly efficiency, it also avoids the connection part 22 from swinging in the left and right directions during the process of the pin 23 being inserted into the circuit board P, thereby further causing the pin 23 connected to the connection part 22 upward to swing in the left and right directions, causing the pin 23 to scrape and collide with other parts of the circuit board P, thereby causing damage to the first terminal 2 or the circuit board P.

[0046] (2) The upper limit portion 111 and the lower limit portion 112 are both connected to the rear wall 10 in the forward direction, and the lower positioning portion 213 is limited to the left and right by the two groove walls of the first receiving groove 12 on its left and right sides, so that the lower positioning portion 213 is limited to be located between the left and right groove walls of the first receiving groove 12 along the left and right directions, and the connecting portion 22 is limited to be located between the two upper limit portions 111 or the lower limit portions 112 on its left and right sides along the left and right directions, so that when viewed from the front to the back, the fixing portion 21 and the connecting portion 22 of the first terminal 2 are both limited to the left and right sides, thereby further limiting The first terminal 2 deflects in the left and right directions; secondly, the upper positioning portion 212 is limited to the left and right by the two groove walls of the first receiving groove 12 located on its left and right sides, and the lower positioning portion 213 is limited to the left and right by the two groove walls of the first receiving groove 12 located on its left and right sides; and the protrusion 211 is clamped up and down by the two groove walls of the groove 121 located on its upper and lower sides, thereby limiting the displacement of the fixing portion 21 in the left and right directions and the up and down directions, and finally, the upper limiting portion 111 and the lower limiting portion 112 are both connected to the rear wall 10, thereby increasing the structural strength of the reinforcing rib 11.

[0047] (3) By setting the upper limit portion 111 to be connected to the partition wall 101 in the front-to-back direction, and a connecting surface 122 connecting the upper limit portion 111 and the bottom wall of the groove 121 in the front-to-back direction, the upper limit portion 111 is closer to the reinforcing rib 11 relative to the bottom wall of the groove 121 in the up-down direction, so that when the first terminal 2 is installed into the first receiving groove 12 from the back to the front, the fixing portion 21 first enters between the two upper limit portions 111 on the left and right sides thereof, so that the fixing portion 21 is predetermined to be located between the two upper limit portions 111 on the left and right sides thereof, thereby making the convex The protruding portion 211 is installed into the groove 121 along the guiding direction of the upper limit portion 111 and the connecting surface 122, thereby reducing the difficulty of assembling the first terminal 2. In addition, the groove 121 penetrates the partition wall 101 backward, and the upper limit portion 111 is closer to the reinforcing rib 11 relative to the bottom wall of the groove 121 in the vertical direction, so that the area of the fixing portion 21 exposed to the air in the vertical direction is larger, which facilitates assembly while achieving better heat dissipation effect when the first terminal 2 transmits current, and also enables the first terminal 2 to carry a larger current within the specified temperature range.

[0048] (4) By setting the second connection portion 33 of the upper second terminal 3 to be limited left and right by the two second limiting portions 113 located on the left and right sides, and the second pin 34 of the upper second terminal 3 to be limited left and right by the two rear limiting portions 114 located on the left and right sides, the second connection portion 33 extending in the front-back direction and the second pin 34 extending in the up-down direction of the upper second terminal 3 are both restricted from displacement in the left-right direction, thereby avoiding the second pin 34 of the upper second terminal 3 being too long in the up-down direction, which causes the second pin 34 to be easily deflected in the left-right direction when plugged into the circuit board P, thereby causing ... In the event that other parts of the circuit board P collide and scratch, the service life of the second terminal 3 is extended while the difficulty of plugging the second pin 34 and the circuit board P is reduced. At the same time, by arranging the mounting portion 311 of the upper row of second terminals 3 to be accommodated in the mounting groove 1411 and being limited left and right by the two groove walls of the mounting groove 1411 on its left and right sides, firstly, the deflection of the docking portion 312 in the left and right directions can be limited, thereby reducing the difficulty of docking the docking portion 312 and the docking element. Secondly, in the upper row of second terminals 3, the mounting portion 311, the second connecting portion 33 and the second pin 34 are all limited left and right, which is conducive to improving the overall stability of the second terminal 3.

[0049] (5) By setting the front end surface 433a of the stop portion 433 in the front-to-back direction at the center position of the elastic arm 43, the stop portion 51 is accommodated in the stop groove 430 and abuts against the stop portion 433 backwards, and the stop portion 51 is located between the two second stop walls 432 in the left-right direction. Firstly, it is avoided that when the stop portion 433 is too close to the front end of the elastic arm 43, the area of the stop portion 51 covered by the second stop wall 432 in the left-right direction is insufficient, thereby causing the line terminal 5 in the terminal receiving groove 41 to easily deflect in the left-right direction, and even causing the stop portion 51 to escape from the stop groove 430; secondly, it is avoided that when the stop portion 433 is too close to the connection between the elastic arm 43 and the side wall 42, the plastic at the connection between the elastic arm 43 and the side wall 42 is too thick, resulting in insufficient elasticity of the elastic arm 43. When the line terminal 5 is inserted into the terminal receiving groove 41, the elastic arm 43 is not easy to elastically displace toward the side wall 42, thereby increasing the difficulty of inserting the line terminal 5. At the same time, by arranging the first stop wall 431 closer to the line-end terminal 5 relative to the side wall 42 in the vertical direction, a height difference is created between the first stop arm and the side wall 42 in the vertical direction. This prevents the elastic arm 43 from being unable to return to a flush position with the side wall 42 after elastic displacement due to insufficient elasticity when the first stop wall 431 and the side wall 42 are flush in the vertical direction, thereby affecting the docking of the line-end connector 400 and the board-end connector 100. It also prevents stress marks caused by the elastic displacement of the elastic arm 43 from being directly exposed on the surface of the side wall 42, thereby affecting the aesthetics of the product.

Claims

1. A board-end connector for mounting on a circuit board, characterized in that: include: An insulating base, the insulating base comprising a rear wall and a plurality of first receiving grooves extending through the rear wall in a front-to-back direction, the plurality of first receiving grooves being arranged in at least two rows in a vertical direction, with each row of first receiving grooves being arranged side by side in a left-to-right direction; a reinforcing rib extending rearward from the rear wall, and positioned between the upper and lower rows of first receiving grooves when viewed from the rear to the front; a plurality of upper limit portions extending upward from an upper surface of the reinforcing rib, and a plurality of lower limit portions extending downward from a lower surface of the reinforcing rib; and the upper limit portions and the lower limit portions being aligned with each other in the vertical direction; A plurality of first terminals are respectively installed in corresponding first receiving grooves from back to front, each first terminal has a fixing portion fixed to the first receiving groove and a connecting portion extending backward from the fixing portion to the first receiving groove, a plug is formed downwardly extending from the connecting portion, and the plug is used to be plugged into the circuit board, the connecting portion of the upper row of first terminals is limited to the left and right by two upper limit portions located on the left and right sides thereof, and the connecting portion of the lower row of first terminals is limited to the left and right by two lower limit portions located on the left and right sides thereof.

2. The board connector according to claim 1, wherein: The upper limit portion and the lower limit portion are both connected to the rear wall forward; the first terminal also includes a protrusion, which is formed by protruding from the fixing portion in the left and right directions; the fixing portion also includes an upper positioning portion and a lower positioning portion, and the positioning portion and the lower positioning portion are respectively located above and below the protrusion in the up and down directions; the upper positioning portion is limited to the left and right by the two groove walls of the first receiving groove located on its left and right sides, and the lower positioning portion is limited to the left and right by the two groove walls of the first receiving groove located on its left and right sides; and the protrusion is limited up and down by the two groove walls of the first receiving groove located on its upper and lower sides.

3. The board connector according to claim 1, wherein: A partition wall is located between two adjacent first receiving grooves along the left-right direction, and the first receiving groove has a groove on one side along the left-right direction, and the groove extends backward through the rear surface of the partition wall; the upper limit portion is connected to the partition wall forward, and a connecting surface connects the upper limit portion and the bottom wall of the groove along the front-to-back direction, and the upper limit portion is closer to the reinforcing rib relative to the bottom wall of the groove in the up-down direction; the first terminal also has a protrusion protruding from the fixing portion along the left-right direction, the protrusion is located at the center of the fixing portion along the up-down direction, and the protrusion is located at the center of the fixing portion along the front-to-back direction, the first terminal is inserted into the first receiving groove from back to front, and the protrusion is limited to the groove.

4. The board connector according to claim 1, wherein: The cam is connected to the second receiving groove by the upper and lower ends of the cam, and the cam is connected to the second receiving groove by the upper and lower ends of the cam. The second fixing portion extends forwardly from the second receiving groove and a second connecting portion extends backward from the second fixing portion to the second mounting groove, a second pin extends downwardly from the second connecting portion, and the second pin is used to be plugged into the circuit board; the second contact portion has a mounting portion and a docking portion, and the mounting portion and the docking portion are arranged opposite to each other in the up and down directions; wherein, the mounting portion of the upper row second terminal is received in the mounting groove and is limited left and right by two groove walls of the mounting groove located on its left and right sides, the docking portion of the upper row second terminal extends out of the upper positioning block, and the second connecting portion of the upper row second terminal is limited left and right by two second limiting portions located on the left and right sides, and the second pin of the upper row second terminal is limited left and right by two rear limiting portions located on its left and right sides.

5. A connector assembly, characterized in that: include: A board-end connector and a wire-end connector docked with each other in a front-to-back direction; A board-side connector, used for mounting on a circuit board, includes: An insulating base, the insulating base comprising a rear wall and a plurality of first receiving grooves extending through the rear wall in a front-to-back direction, the plurality of first receiving grooves being arranged in at least two rows in a vertical direction, with each row of first receiving grooves being arranged side by side in a left-to-right direction; a reinforcing rib extending rearward from the rear wall, and positioned between the upper and lower rows of first receiving grooves when viewed from the rear to the front; a plurality of upper limit portions extending upward from an upper surface of the reinforcing rib, and a plurality of lower limit portions extending downward from a lower surface of the reinforcing rib; and the upper limit portions and the lower limit portions being aligned with each other in the vertical direction; A plurality of first terminals are respectively installed in corresponding first receiving grooves from back to front, each first terminal has a fixing portion fixed to the first receiving groove and a connecting portion extending backward from the fixing portion to the first receiving groove, a plug is formed downwardly extending from the connecting portion, and the plug is used to be plugged into the circuit board, the connecting portion of the upper row of first terminals is limited to the left and right by two upper limit portions located on the left and right sides thereof, and the connecting portion of the lower row of first terminals is limited to the left and right by two lower limit portions located on the left and right sides thereof.

6. The connector assembly according to claim 5, wherein: The wire end connector includes an insulating body, the insulating body having a plurality of terminal receiving grooves and a side wall located on one side of the terminal receiving groove; at least one elastic arm extends forward from the side wall, and a stop groove is formed by being recessed backward from the front end of the elastic arm, the stop groove having a first stop wall, two second stop walls respectively located at the left and right ends of the first stop wall, and a stop portion located below the first stop wall, wherein the front end surface of the stop portion is located at the center position of the elastic arm in the front-to-back direction; the stop groove also has a protrusion that is arranged opposite to the first stop wall in the up-down direction; the plurality of wire end terminals are respectively accommodated in the plurality of terminal receiving grooves, and at least one wire end terminal has a stop portion, when the wire end terminal is inserted into the terminal receiving groove from back to front, the elastic arm elastically displaces in a direction close to the side wall; when the wire end terminal is fully inserted into the terminal receiving groove, the stop portion is accommodated in the stop groove and abuts against the stop portion backward, and the stop portion is located between the two second stop walls in the left-right direction, and between the first stop wall and the protrusion in the up-down direction; in the up-down direction, the first stop wall is closer to the wire end terminal than the side wall.

7. The connector assembly according to claim 5, wherein: The upper limit portion and the lower limit portion are both connected to the rear wall forward; the first terminal also includes a protrusion, which is formed by protruding from the fixing portion in the left and right directions; the fixing portion also includes an upper positioning portion and a lower positioning portion, and the positioning portion and the lower positioning portion are respectively located above and below the protrusion in the up and down directions; the upper positioning portion is limited to the left and right by the two groove walls of the first receiving groove located on its left and right sides, and the lower positioning portion is limited to the left and right by the two groove walls of the first receiving groove located on its left and right sides; and the protrusion is limited up and down by the two groove walls of the first receiving groove located on its upper and lower sides.

8. The connector assembly according to claim 5, wherein: A partition wall is located between two adjacent first receiving grooves along the left-right direction, and the first receiving groove has a groove on one side along the left-right direction, and the groove extends backward through the rear surface of the partition wall; the upper limit portion is connected to the partition wall forward, and a connecting surface connects the upper limit portion and the bottom wall of the groove along the front-to-back direction, and the upper limit portion is closer to the reinforcing rib relative to the bottom wall of the groove in the up-down direction; the first terminal also has a protrusion protruding from the fixing portion along the left-right direction, the protrusion is located at the center of the fixing portion along the up-down direction, and the protrusion is located at the center of the fixing portion along the front-to-back direction, the first terminal is inserted into the first receiving groove from back to front, and the protrusion is limited to the groove.

9. The connector assembly according to claim 5, wherein: The board-end connector also includes a plurality of second receiving grooves that penetrate the rear wall in the front-to-back direction, and the plurality of second receiving grooves are arranged in at least two rows in the up-down direction; the plurality of second terminals are respectively installed in the plurality of second receiving grooves from the back to the front, and each second terminal has a second fixing portion fixed to the second receiving groove, a second contact portion extending forward from the second fixing portion to the second receiving groove, and a second connecting portion extending backward from the second fixing portion to the second mounting groove, a second pin extending downward from the second connecting portion to form the second pin, and the second pin is used to be plugged into the circuit board; the second contact portion has a mounting portion and a docking portion, and the mounting portion and the docking portion are arranged opposite to each other in the up-down direction; from the insulating base backward A plug-in cavity is recessed and located in front of the rear wall, and the first receiving groove and the second receiving groove are both connected to the plug-in cavity. An upper positioning block is formed downwardly extending from the top wall of the insulating base, and the upper positioning block has a plurality of mounting grooves, each mounting groove passes through the upper positioning block along the front-to-back direction and is connected to the second receiving groove; a plurality of second limiting portions are formed upwardly extending from the upper surface of the reinforcing rib, wherein the mounting portion of the upper row of second terminals is received in the mounting groove and is limited left and right by the two groove walls of the mounting groove located on the left and right sides thereof, the docking portion of the upper row of second terminals extends out of the upper positioning block, and the second connecting portion of the upper row of second terminals is limited left and right by the two second limiting portions located on the left and right sides.

10. The connector assembly according to claim 9, wherein: A plurality of rear limiting portions are extended rearward from the rear surface of the reinforcing rib, and the pins of the upper row of second terminals are limited left and right by two rear limiting portions located on the left and right sides thereof.

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