CN203398385U - Board-to-board connector - Google Patents

Abstract

The utility model relates to the field of connectors, in particular to a board-to-board connector; the circuit comprises a base, an insulating body, a plurality of first terminals and a plurality of second terminals; the second nickel layer part of the second terminal penetrates through the through hole of the insulating body, the holding force of the second terminal and the insulating body can be effectively improved, the poor phenomena of tin bending and the like in the welding process of the board-to-board connector can be effectively improved by the first nickel layer part of the first terminal and the second nickel layer part of the second terminal, and therefore the performance of a product is improved, and the labor cost and the material cost increased due to defect production rework are reduced; the first terminal forms a double-corrugated structure due to the installation part and the elastic part, so that the contact part has sufficient spring characteristics, the holding force between the second terminal and the first terminal can be effectively increased, and the drop impact resistance and the distortion resistance are improved.

Description

A board-to-board connector

technical field

The utility model relates to the field of connectors, in particular to a board-to-board connector.

Background technique

Board-to-board connector is a connector that is directly applied between PCB boards. Board-to-board connector is the connector product with the strongest transmission capacity among all connector product types. It is mainly used in power systems, communication networks, Financial manufacturing, elevators, industrial automation, medical equipment, office equipment, home appliances, military manufacturing and other industries; the structure of the board-to-board connector mainly includes a base and an insulating body that are interlocked up and down, and embedded in the base and the insulating body. The metal terminals of the existing board-to-board connectors are likely to loosen the connection between the terminals and the base or the insulating body when the board-to-board connector is hit or dropped due to the defects in the electrical structure design, thus causing Falling off and being damaged, it is also easy to cause poor contact between the metal terminal and the metal terminal under the action of falling or other external forces; in addition, the welding part of the existing board-to-board connector is usually directly extended from the metal terminal body. When it is easy to have bad phenomena such as tinning.

Utility model content

The purpose of this utility model is to overcome the above-mentioned shortcomings, and provide a board-to-board connector with a stable structure, drop resistance, stable contact between metal terminals, and a soldering part that is not prone to soldering during welding.

In order to achieve the above purpose, the specific scheme of the utility model is as follows: the board-to-board connector includes a base and an insulating body; a boss protrudes vertically from the middle of the base, and the periphery of the base extends There are first surrounding walls, wherein the first surrounding walls on both sides are provided with a number of first terminal slots extending to the boss; there are second surrounding walls extending upwards around the insulating body, wherein the second surrounding walls on both sides are provided with several A second terminal slot matched with a terminal slot; a through hole is opened at the bottom of each second terminal slot; a plurality of first terminals are assembled in the first terminal slot; a plurality of second terminals are also included, Assembled in the second terminal groove; each first terminal includes a connecting part arranged horizontally, an abutment part bent upwards from one end of the connecting part and an inverted U-shaped part bent upwards and extended from the other end of the connecting part The installation part, the installation part extends downwards to the first nickel layer part, the first nickel layer part is bent outwards to extend the first welding part, and the free end of the abutting part is bent downwards to extend an inverted U-shaped elastic part; Each second terminal includes a U-shaped plug-in part, a resisting part connected to one end of the plug-in part and a contact part connected to the other end of the plug-in part, and the end of the contact part away from the plug-in part extends toward the resisting part The second nickel layer part, the second nickel layer part is extended with a second welding part; the second nickel layer part passes through the through hole of the insulating body.

Wherein, a reinforcing part is further provided at the connecting part of the connecting part and the mounting part, and first bumps protrude from both sides of the reinforcing part.

Wherein, the connection between the reinforcement part and the installation part is arranged obliquely upward, and forms a second convex point.

Wherein, the longitudinal width of the first nickel layer part is respectively larger than the longitudinal width of the installation part and the longitudinal width of the first welding part.

Wherein, the connection between the second nickel layer part and the second welding part is arranged obliquely upward.

Wherein, the longitudinal width of the second nickel layer portion is smaller than the longitudinal width of the contact portion.

Wherein, two parallel protrusions protrude vertically from the end surface of the contact portion away from the resisting portion.

Wherein, the upper end of the convex post is also provided with a blocking post perpendicular to the convex post.

Wherein, a wedge-shaped bump protrudes from an end surface of the resisting portion away from the contacting portion.

The beneficial effect of the utility model is that each first terminal includes a connecting part arranged horizontally, an abutment part bent upwards from one end of the connecting part and an inverted U-shaped part bent upwards and extended from the other end of the connecting part. The installation part, the installation part extends downwards to the first nickel layer part, the first nickel layer part is bent outwards to extend the first welding part, and the free end of the abutting part is bent downwards to extend an inverted U-shaped elastic part; Each second terminal includes a U-shaped plug-in part, a resisting part connected to one end of the plug-in part and a contact part connected to the other end of the plug-in part, and the end of the contact part away from the plug-in part extends toward the resisting part The second nickel layer part, the second nickel layer part is extended with the second welding part; the first nickel layer part of the first terminal and the second nickel layer part of the second terminal can effectively improve the board-to-board connector During the soldering process, bad phenomena such as tinning occur, thereby improving product performance and reducing labor and material costs due to defective production and rework; the first terminal forms a double corrugated structure due to the mounting part and the elastic part, so that the contact part has sufficient The unique spring characteristics can effectively increase the holding force between the second terminal and the first terminal, and increase the resistance to drop impact and twisting.

Description of drawings

Fig. 1 is a perspective view of a first terminal;

Figure 2 is a perspective view of the second terminal

Fig. 3 is a perspective view of another viewing angle of the second terminal

Fig. 4 is the exploded schematic view of the utility model;

Figure 5 is a three-dimensional view of the base;

Figure 6 is a perspective view of the insulating body;

Fig. 7 is a sectional view of the internal structure of the utility model;

Explanation of reference numerals among Fig. 1 to Fig. 7:

1-base; 11-boss; 12-first wall; 13-first terminal slot;

2-insulation body; 21-the second wall; 22-the second terminal slot;

3-first terminal; 31-connecting part; 31a-reinforcing part; 31b-first bump; 32-installation part; 32a-second bump; 33-first welding part; 33a-first nickel layer part ; 34-resting portion; 34a-elastic portion; 35-extension portion;

4-Second terminal; 41-Buckle part; 42-Contact part; 42a-Protruding post; piece.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, and the scope of implementation of the utility model is not limited thereto. The utility model takes the direction of FIG. 7 as a reference direction.

As shown in Figures 1 to 7, the board-to-board connector described in this embodiment includes a base 1 and an insulating body 2; a boss 11 protrudes vertically from the middle of the base 1, and the base 1 There are first surrounding walls 12 extending upward around the base 1, wherein the first surrounding walls 12 on both sides are provided with a number of first terminal slots 13 extending to the boss 11; the insulating body 2 is extending upwardly around a second surrounding wall 21 , where the second walls 21 on both sides are provided with a number of second terminal slots 22 matching with the first terminal slots 13; the bottom of each second terminal slot 22 is opened with a through hole 23; also includes a number of first terminal slots 22; The terminal 3 is assembled in the first terminal groove 13; it also includes a number of second terminals 4, which are assembled in the second terminal groove 22; the base 1 and the insulating body 2 are buckled and matched to realize the electrical connection of the board to the board .

Further, each first terminal 3 includes a connecting portion 31 arranged horizontally, an abutting portion 34 bent upwards from one end of the connecting portion 31 and an inverted U-shaped portion bent upwards from the other end of the connecting portion 31. The installation part 32, the first nickel layer part 33a extends downward from the installation part 32, and the first nickel layer part 33a is bent outwards to extend the first welding part 33; the first nickel layer part 33a is provided, which can effectively improve the During the soldering process of board-to-board connectors, the undesirable phenomenon of soldering occurs, thereby improving product performance and reducing labor and material costs due to defective production and rework.

Further, the connection between the connecting part 31 and the mounting part 32 is also provided with a reinforcement part 31a, and first bumps 31b protrude from both sides of the reinforcement part 31a; the first bumps 31b are further increased The holding force between the first terminal 3 and the base 1 is improved.

Further, the longitudinal width of the first nickel layer part 33a is larger than the longitudinal width of the mounting part 32 and the longitudinal width of the first welding part 33 respectively; the large-area first nickel layer part 33a can increase the effect of preventing tin overhang.

Further, the free end of the abutting portion 34 is bent downwards to extend an inverted U-shaped elastic portion 34a, and the elastic portion 34a interferes with the outer wall of the first terminal groove 13 when the second terminal 4 is inserted; the first terminal 3 Due to the unique double corrugated structure formed by the mounting part 32 and the elastic part 34a, the contact part has sufficient spring characteristics, which can effectively increase the holding force between the second terminal 4 and the first terminal 3, and increase resistance to drop impact and resistance Twisted performance.

Further, each second terminal 4 includes a U-shaped plug-in part 41, a resisting part 45 connected to one end of the plug-in part 41 and a contact part 42 connected to the other end of the plug-in part 41, and the contact part 42 is far away from the plug-in part. One end of the portion 41 extends a second nickel layer portion 43 toward the direction of the resisting portion 45, the longitudinal width of the second nickel layer portion 43 is smaller than the longitudinal width of the contact portion 42, and the second nickel layer portion 43 extends with a second nickel layer portion 43. Welding part 44; the second nickel layer part 43 is provided, which can effectively improve the occurrence of bad phenomena such as tinning during the welding process of the board-to-board connector, thereby improving the performance of the product and reducing the increase in manpower and materials due to defective production and rework cost. the

Further, two parallel protrusions 42a protrude vertically from the end surface of the contact portion 42 away from the resisting portion 45; when the second terminal 4 is inserted into the first terminal 3, the two protrusions 42a can interfere with the first terminal 3 The connection between the reinforcing part 31a and the mounting part 32 is arranged obliquely upwards, and forms a second bump 32a, and the second bump 32a interferes with the second terminal 4 when the second terminal 4 is inserted into the first terminal 3 ; The two protrusions 42a and the second bump 32a form a unique three-contact structure design, which increases the contact force per unit area, and improves the effect of removing flux and foreign matter compared with previous designs; in addition, it can also It prevents foreign objects from being trapped and greatly improves the reliability of contact.

Further, the connection between the second nickel layer part 43 and the second welding part 44 is arranged obliquely upward, and the second nickel layer part 43 passes through the through hole 23 of the insulating body 2, thus greatly increasing the second The retaining force between the terminal 4 and the insulating body 2 improves the drop resistance and the impact resistance of external force.

Further, the upper end of the protruding post 42a is further provided with a stop post 42b perpendicular to the post 42a, the stop post 42b can increase the holding force and stability when the second terminal 4 is inserted into the first terminal 3 .

Further, a wedge-shaped protrusion 45a protrudes from one end surface of the resisting portion 45 away from the contact portion 42; when the second terminal 4 is pulled out of the first terminal 3, it cooperates with the second protrusion 32a to play a simple locking role, thereby preventing The abnormal separation of the first terminal 3 and the second terminal 4 enhances the contact reliability.

Further, the above-mentioned first terminal 3 and second terminal 4 are made of copper core, and a nickel layer is plated on the surface of the copper body, and then, the parts except the first nickel layer part 33a and the second nickel layer part 43 are plated on The gold layer, so the first nickel layer portion 33a and the second nickel layer portion 43 are partially exposed to the nickel layer.

The above is only a preferred embodiment of the utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the utility model patent application are included in the protection of the utility model patent application. within range.

Claims (9)

1. A board-to-board connector, including a base (1) and an insulating body (2); a boss (11) protrudes vertically from the middle of the base (1), and the base (1) ) has a first wall (12) extending upward around the periphery, wherein the first wall (12) on both sides is provided with a number of first terminal slots (13) extending to the boss (11); the insulating body (2) There are second surrounding walls (21) extending upwards from all around, wherein the second surrounding walls (21) on both sides are provided with a number of second terminal slots (22) matching with the first terminal slots (13); it is characterized in that: The bottom of each second terminal groove (22) has a through hole (23); it also includes a number of first terminals (3), assembled in the first terminal groove (13); it also includes a number of second terminals (4 ), assembled in the second terminal groove (22); each first terminal (3) includes a connecting portion (31) arranged horizontally, and an abutting portion (34) bent upwards from one end of the connecting portion (31) ) and the other end of the connecting part (31) is bent upwards and extended to an inverted U-shaped installation part (32), the installation part (32) extends downwards to the first nickel layer part (33a), the first nickel layer part ( 33a) Bending outwards to extend the first welding portion (33), the free end of the abutting portion (34) is bent downwards to extend an inverted U-shaped elastic portion (34a); each second terminal (4) includes The U-shaped buckle-insert part (41), the resisting part (45) connected to one end of the buckle-insert part (41) and the contact part (42) connected to the other end of the buckle-insert part (41), the contact part (42) is far away from One end of the buckling part (41) extends a second nickel layer part (43) toward the direction of the resisting part (45), and the second nickel layer part (43) is extended with a second welding part (44); the first The second nickel layer part (43) passes through the through hole (23) of the insulating body. 2. A board-to-board connector according to claim 1, characterized in that: a reinforcing part (31a) is provided at the connection between the connecting part (31) and the mounting part (32), so that First protrusions (31b) respectively protrude from both sides of the reinforcement part (31a). 3. A board-to-board connector according to claim 2, characterized in that: the connection between the reinforcement part (31a) and the installation part (32) is arranged obliquely upwards, and forms a second bump (32a) . 4. A board-to-board connector according to claim 1, characterized in that: the longitudinal width of the first nickel layer part (33a) is respectively larger than the longitudinal width of the mounting part (32) and the first welding part ( 33) Vertical width. 5. The board-to-board connector according to claim 1, characterized in that: the connection between the second nickel layer part (43) and the second welding part (44) is arranged obliquely upward. 6. The board-to-board connector according to claim 1, characterized in that: the longitudinal width of the second nickel layer part (43) is smaller than the longitudinal width of the contact part (42). 7 . The board-to-board connector according to claim 1 , characterized in that two parallel protrusions ( 42 a ) protrude vertically from the end surface of the contact portion ( 42 ) away from the resisting portion ( 45 ). 8. The board-to-board connector according to claim 1, characterized in that: the upper end of the boss (42a) is further provided with a stopper (42b) perpendicular to the boss (42a). 9 . The board-to-board connector according to claim 1 , wherein a wedge-shaped protrusion ( 45 a ) protrudes from an end surface of the resisting portion ( 45 ) away from the contact portion ( 42 ).

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