CN101783448B - Board-to-board electrical connector - Google Patents

Abstract

The invention discloses a board-to-board electrical connector, which comprises a female base body, the female base body is provided with a plurality of female terminal slots arranged at intervals; and a plurality of female terminals assembled in the female terminal slots of the female base body, the female base body The female terminal includes: a holding part fixed in the female terminal groove, an elastic arm and a welding part extending out of the body of the female seat; a male seat body is assembled on the female seat body, and the male seat body is provided with a plurality of male seats arranged at intervals. terminal groove; and most of the male terminals assembled in the male terminal groove of the male seat body, the male terminal includes a contact part, a fixing part connected to one end of the contact part, the fixing part is fixed in the male terminal groove; and a The welding part at the other end of the contact part extends out of the body of the male seat; the contact part and the side walls of the two adjacent male terminal grooves form a space that can be in contact with the elastic arm of the female terminal, and the contact part is in contact with the elastic arm . The elastic arm of the present invention is in good contact with the contact part by means of the side wall of the male terminal groove and the contact part of the male terminal, thereby ensuring good electrical connection between the male terminal and the female terminal.

Description

A board-to-board electrical connector

technical field

The invention relates to an electrical connector, in particular to an electrical connector for connecting two circuit boards. the

Background technique

At present, with the rapid development of various electronic products, the requirements for thinner and lighter are getting higher and higher, and the application of printed circuit boards is becoming more and more common. The board-to-board electrical connector is used to realize the electrical connection of two printed circuit boards. Although the board-to-board electrical connector is small, it plays a pivotal role because it is related to the circuit connection in electronic products, so its electrical contact stability, plug resistance and contact impedance are all measures of the board-to-board electrical connector. An important parameter for good or bad. the

Please refer to Figure 1 and Figure 2, which is an existing board-to-board electrical connector for connecting two circuit boards, which includes:

A female seat body 10', which is provided with a middle part 13' and a peripheral side part 16', the middle part and the peripheral side part are formed with two concave parts 15', and the peripheral side part 16' can be provided with female terminals arranged at intervals, and the female terminals The seat body is arranged on the first circuit board 1';

Most of the female terminals 20' are assembled in the female base body 10', which are formed by metal sheets: a welding part 21', which extends horizontally out of the female base body 10'; an inverted U-shaped first connection part 22', one end of the connecting part 22' is connected with the welding part 21', and is inserted and fixed in the female seat body 10'; a U-shaped second connecting part 23', one end of the connecting part is connected with the first connecting part 22 'The other ends are connected and formed by bending the other end of the first connecting part 22' from top to bottom; an elastic arm 24', which is formed by extending from the other end of the second connecting part 23', can be placed on the female seat body Elastic in the recess 15', and the end of the elastic arm 24' is formed with a hook contact 25';

A male seat body 30', which has a recess 33' in the middle, and a plurality of male terminal grooves 35' arranged at intervals on both sides, which can be inserted into the female seat body 10' on both sides when it is combined with the female seat body 10' In the two concave parts 15', the middle part 13' of the female seat body 10' is inserted into the concave part 33' in the middle of the male seat body 30', and the male seat body is arranged on the second circuit board 2';

Most of the male terminals 40' are assembled in the male seat body 30', which is formed by bending a metal sheet: a welding part 41', which extends out of the male seat body 30' horizontally; a fixed part 43'; a contact part 44'; the fixed part 43' can be fixed with the male terminal groove 35', one end of which is connected to the welding part 41', and the other end of the welding part 41' is bent and extended from bottom to top to form a contact part 44', there is a certain interval between the contact part 44' and the welding part 41', and the end of the contact part 44' is formed with a contact end 45' which can interfere with the contact end 25' of the female seat body, and the contact end 45' For the lock structure. the

Please refer to Figure 2. After the male seat body 30' is combined with the female seat body 10', the hook-shaped contact 25' of the female terminal 20' elastically contacts the contact end 45' of the male terminal, so as to achieve the connection with the male seat body and the female seat body respectively. The two circuit boards 1', 2' connected to each other have the function of signal transmission. the

The above-mentioned board-to-board connector has the following disadvantages: the main elastic deformation of the board-to-board connector lies in the elastic arm 24' of the female terminal, and the elastic arm 24' is elastically carried out in the space of the concave part 15' of the female base body 10'. deformation, the positive force provided by the elastic arm 24 ′ is limited, and the so-called positive force is the force on the contact point of the female terminal and the male terminal. In actual use, too small positive force will lead to poor contact. In addition, the male terminal 40' of the above-mentioned board-to-board connector is generally assembled into the male terminal groove of the male seat body 30' by means of interference. One side is assembled into the male terminal groove 35'. In the process of combining the male seat body 30' with the female seat body 10', the male terminal 40' is to a certain extent received by the female terminal 20' to a direction opposite to the direction in which the male seat body 30' is combined with the female seat body 10' As a result, the male terminal 40' and the female terminal 20' cannot be effectively tightly combined, which may easily lead to the occurrence of poor contact. the

Contents of the invention

The problem to be solved by the present invention is that the positive force of the existing board-to-board electrical connector is insufficient, resulting in the problem of poor contact between the male and female terminals, so a board-to-board electrical connector that can provide sufficient positive force is proposed. the

The present invention is achieved like this:

A board-to-board connector, including:

A female base body, a recess is formed between the middle parts of the female base body, and the female base body is provided with a plurality of female terminal grooves arranged at intervals; and

A plurality of female terminals, the female terminals are assembled in the female terminal slots of the female base body,

The female terminal includes a holding part, which is fixed in the female terminal groove; an elastic arm, which extends to the concave part of the female base body; and a female terminal welding part, which extends out of the female base body;

A male seat body assembled in the recess of the female seat body, the male seat body is provided with a plurality of male terminal grooves arranged at intervals; and

a plurality of male terminals, the male terminals are assembled in the male terminal groove of the male seat body,

The male terminal includes a contact portion; a fixed portion connected to one end of the contact portion, the fixed portion is fixed to the male terminal groove; and a male terminal welding portion connected to the other end of the contact portion, the male terminal welding portion extends out of the male seat In vitro;

The contact portion and the side walls of the adjacent two male terminal slots form a space that can be in contact with the elastic arm of the female terminal, and the contact portion is in contact with the elastic arm;

The male terminal groove is provided with a blocking part, the blocking part is located outside the welding part of the male terminal, and the blocking part is arranged in a direction opposite to the direction in which the male seat body and the female seat body are combined. the

Compared with the prior art, the board-to-board electrical connector of the present invention has the following advantages:

(1) A space can be formed against the elastic arm of the female terminal by the contact part of the male terminal and the side walls of the adjacent two male terminal grooves, so when the male terminal and the female terminal are combined, the elastic arm of the female terminal is elastic to a certain extent The deformed state is electrically connected to the contact portion of the male terminal, and the elastic arm of the female terminal is well accommodated in the space through the space, so that a good electrical connection between the male terminal and the female terminal can be ensured. the

(2) A space that can interfere with the elastic arm of the female terminal is formed by the contact portion of the male terminal and the side walls of the two adjacent male terminal slots, so there is no need for an elastic arm with sufficient longitudinal length, as long as the elastic arm is bent transversely A certain space is provided so that the end of the elastic arm can touch the contact portion of the male terminal, so the width of the male and female base bodies can be designed to be narrow and still have a good electrical connection effect. the

(3) The male terminal groove is provided with a blocking part in the direction away from the male seat body and the female seat body, and the blocking part is located outside the welding part of the male terminal, so that when the male seat body and the female seat body are joined, the male terminal is well The position limit further ensures the good electrical connection between the male terminal and the female terminal. the

Description of drawings

Fig. 1 is a cross-sectional exploded schematic diagram of an existing board-to-board electrical connector;

Fig. 2 is a schematic diagram of a sectional exploded view of an existing board-to-board electrical connector in use;

Fig. 3 is the sectional combined schematic diagram of preferred embodiment of the present invention;

Fig. 4 is a schematic diagram of the structure of the female body and the female terminal of the preferred embodiment of the present invention;

Fig. 5 is a schematic diagram of the structure of the male seat body and the male terminal in a preferred embodiment of the present invention;

FIG. 6 is an enlarged view of part A of FIG. 5 . the

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. the

As shown in Fig. 3 to Fig. 7, the board-to-board connector of the embodiment of the present invention includes: a female seat body 10 and a male seat body 30, the female seat body 10 includes a female seat body body 100 and a female seat terminal groove 101, which is made of insulating material In this configuration, a recess 102 is formed in the middle of the female base body 10 , and a plurality of female terminals arranged at intervals are arranged on both sides thereof, and the female terminals are arranged in the female base body body 100 through the female terminal groove 101 . The male seat body 30 includes a male seat body body 300, a male terminal groove 301, which is also made of insulating material, and a male terminal 40. The male terminal 40 is placed in the male seat body body 300 through the male terminal groove 301, facing The female terminal 20 and the male terminal 40 are introduced in detail. the

The female terminal 20 of the female base body is integrally formed by a metal sheet, including a holding portion 22, which is inserted longitudinally into the female terminal groove 101 for fixing; an elastic arm 23, which extends to the concave portion 102 of the female base body 10, It can bounce left and right in the concave part, and a curved contact area 230 is formed at the end thereof; and a welding part 21 extends out of the female base body 10 horizontally. Please refer to FIG. 3 and FIG. 4 , the holding portion 22 of the female terminal shown in the figure is U-shaped, connecting the welding portion 21 and the elastic arm 23 . Of course, the shape of the holding part 22 can be changed according to needs. For example, the holding part 23 can extend longitudinally from the end of the welding part 21 to the female seat body, and be inserted into the female seat body body 100, and can be connected with the terminal groove of the female seat body. 101 tightens the fixed structure, which presents an I-shape. the

Please refer to Fig. 5 to Fig. 6, the male terminal 40 of the male seat body is integrally formed by a metal sheet, which includes a contact portion 42; one end of the contact portion 42 is extended to form a fixed portion 43, and the fixed portion 43 is fixed In the male terminal groove; the other end of the contact portion 42 forms a welding portion 41, and the welding portion 41 extends out of the male seat body 30 horizontally. the

Please also refer to FIG. 7 , which is a partially enlarged view of the male seat body. The contact portion 42 of the male terminal 40 forms a space with the side walls of two adjacent male terminal slots (301', 301"). When the male seat body 30 is assembled in the recess 102 of the female seat body 10, this space is used to resist the female terminal The elastic arm 23 of 20. Please refer to Fig. 3 together. At this time, the elastic arm 23 of the female terminal 20 is elastically deformed to the inner side of the concave part due to the interference of the contact part 42 of the male terminal 30, so that the elastic arm 23 is in contact with the male terminal. The contact portion 42. At the same time, the sidewalls of the corresponding two male terminal grooves (301', 301") become the clamping surfaces that limit the movement of the elastic arm 23. The male terminal slot 301 is provided with a blocking portion 302 , the blocking portion 302 is arranged in a direction opposite to the coupling direction of the male seat body and the female seat body, and the blocking portion 302 is located outside the welding portion 41 of the male terminal 40 . the

Please refer to FIG. 5 , the fixed part 43 of the male terminal 40 is derived from one end of the contact part 42 from bottom to top, and is superimposed on the contact part 42. The proximal end of the fixed part 43 forms an insertion end, and the insertion end has an inclined introduction. Face 430. the

With the above structure, please refer to FIG. 3 , after the male seat body 30 is joined to the female seat body 10, the contact area 230 of the elastic arm 23 of the male terminal 40 presses against the contact portion 42 of the male terminal 40, and at the same time the corresponding two male terminal slots (301 ′, 301 ″) side walls limit the left and right movement of the elastic arm 23, thereby ensuring the electrical connection between the male terminal 40 and the female terminal 20, and the soldering portion 41 of the male terminal 40 is connected to the first circuit board, the female terminal 20 The welding part 21 of the second circuit board is connected to the second circuit board, so that the first circuit board and the second circuit board have achieved a good electrical connection.

From the above description, it can be seen that the board-to-board electrical connector of the present invention has the following advantages:

(1) A space that can interfere with the elastic arm of the female terminal is formed by the contact part of the male terminal and the side walls of the two adjacent male terminal grooves. Therefore, when the male terminal is combined with the female terminal, the elastic arm of the female terminal is in a certain position. The elastically deformed state is electrically connected to the contact portion of the male terminal, and the side walls of the two adjacent male terminal grooves become the clamping surface that restricts the movement of the elastic arm. The elastic arm of the female terminal is well accommodated in the space with a certain elastic deformation through the above-mentioned space, so that a good electrical connection between the male terminal and the female terminal can be ensured. the

(2) A space that can interfere with the elastic arm of the female terminal is formed by the contact portion of the male terminal and the side walls of the two adjacent male terminal slots, so there is no need for an elastic arm with sufficient longitudinal length, as long as the elastic arm is bent transversely A certain space is provided so that the end of the elastic arm can touch the contact portion of the male terminal, so the width of the male and female base bodies can be designed to be narrow and still have a good electrical connection effect. the

(3) The fixed part of the male terminal is derived from one end of the contact part from bottom to top, and is superimposed on the contact part. Compared with the fixed part and the contact part of the prior art male terminal, there is a movable space, The structure of the male terminal of the present invention saves more space, and ensures sufficient positive force when the male terminal contacts the female terminal. the

(4) The male terminal groove is provided with a blocking part in the direction away from the male seat body and the female seat body, and the blocking part is located outside the welding part of the male terminal, so that when the male seat body and the female seat body are joined, the male terminal is well The position limit further ensures the good electrical connection between the male terminal and the female terminal. the

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention. the

Claims (4)

1. A board-to-board electrical connector, characterized in that it includes: A female base body, a recess is formed in the middle of the female base body, and the female base body is provided with a plurality of female terminal grooves arranged at intervals; and a plurality of female terminals, the female terminals are assembled in the female terminal slots of the female base body, The female terminal includes a holding part, which is fixed in the groove of the female terminal; an elastic arm, which extends to the concave part of the female base body; and a female terminal welding part, which extends out of the female base body; A male seat body assembled in the concave part of the female seat body, the male seat body is provided with a plurality of male terminal grooves arranged at intervals; and a plurality of male terminals, the male terminals are assembled in the male terminal groove of the male seat body, The male terminal includes a contact portion; a fixed portion connected to one end of the contact portion, the fixed portion is fixed to the male terminal slot; and a male terminal welding portion connected to the other end of the contact portion, the male terminal welding portion extends out of the male seat in vitro; The contact portion and the side walls of the two adjacent male terminal slots form a space that can be in contact with the elastic arm of the female terminal, and the contact portion is in contact with the elastic arm; The male terminal groove is provided with a blocking part, the blocking part is located outside the welding part of the male terminal, and the blocking part is arranged in a direction opposite to the direction in which the male seat body and the female seat body are combined. 2 . The board-to-board electrical connector according to claim 1 , wherein the fixing portion of the male terminal is superimposed on the contact portion from bottom to top. 3 . The board-to-board electrical connector according to claim 2 , wherein the proximal end of the fixing portion forms an insertion end, and the insertion end has an inclined introduction surface. 4 . 4 . The board-to-board electrical connector according to claim 1 , wherein the welding portion of the female terminal extends horizontally out of the body of the female seat, and the welding portion of the male terminal extends horizontally out of the body of the male seat.

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