CN111211431A

CN111211431A - Blanking Terminal Type BTB Connector

Info

Publication number: CN111211431A
Application number: CN202010098607.3A
Authority: CN
Inventors: 侯国柱; 何志刚
Original assignee: Shanghai Dianji University
Current assignee: Shanghai Dianji University
Priority date: 2020-02-18
Filing date: 2020-02-18
Publication date: 2020-05-29

Abstract

The invention provides a BTB connector of a blanking terminal type, which comprises a male socket and a female socket, wherein the male socket is provided with a first end and a second end; the female socket comprises a female socket body and a plurality of female terminals which are connected, the male socket comprises a male socket body and a plurality of male terminals which are connected, and the male terminals are distributed on two sides of the male socket body; female socket body form with a public socket mounting groove of public socket shape complex, public socket install in the public socket mounting groove, public terminal with the position one-to-one of female terminal, just public terminal with female terminal forms the buckle structure of mutually supporting and passes through buckle structure buckle is connected. The blanking terminal type BTB connector has the advantages of compact structure, high reliability and convenience in assembly.

Description

BTB connector of blanking terminal type

Technical Field

The invention relates to the field of board-to-board connectors, in particular to a blanking terminal type BTB connector.

Background

Board-to-board Connectors, also known in the industry as BTB Connectors (BTB), are the most powerful connector products among all connector product types at present, and BTB Connectors are used to connect two PCBs to achieve mechanical and electrical connection. Compared with other types of connectors, the BTB connector has the strongest transmission capability, so that the BTB connector is widely applied to industries such as automation equipment, medical industry, intelligent home and household appliances, electric power equipment, electronic digital products, office equipment, military manufacturing and the like, and is most widely applied to electronic intelligent equipment at present. Because a large amount of BTB connectors are adopted, the connection reliability and the contact point resistance of the BTB connectors are more and more important for the quality of products, comprehensive testing must be carried out on the performance of the adopted connectors, the high-current elastic sheet micro-needle module is well adapted to the testing requirements of a board on a male seat and a female seat of a board connector, the service life is long, no pricking mark exists, and the good performance of the connectors is ensured.

1. BTB connector structure

Currently, with the popularization of SMT technology, the application of surface mount connectors is becoming more and more extensive, and various types of PCBs have corresponding surface mount connectors. From the through-hole (T/H) soldering process to the Surface Mount Technology (SMT) soldering process, the terminal Pitch (Pitch) of the connector can be reduced from 1.27mm to 1.0mm and gradually to 0.8mm and 0.5mm, and the application of the SMT process allows electronic components to be soldered on both sides of the PCB, greatly increasing the component density on the PCB.

At present, various consumer electronic products using the connector have integrated miniaturization, thinning and high performance, which promotes the corresponding connector to be short and the connecting part to be narrow. At present, in Board-to-Board (BTB) connector products, companies start mass production of 0.5mm chip connector products.

The conventional pin-to-socket contact of the chip-type connector is converted into narrow-chip contact, the through-hole welding process is converted into surface-mount welding process, and the arrangement distance of the terminals is reduced from 1.27mm to 0.5mm, which represents the development trend and mainstream of the future electric connectors.

In order to meet the requirements of the SMT process, the terminal pads of the whole product are strictly required to have good flatness and coplanarity, which is usually specified to be 0.10max.

2. Terminal structure design

In order to achieve high-density arrangement and more stable contact performance of the connector, a narrow-sheet type contact mode is adopted for the 0.5mm BTB connecting terminal, and phosphor bronze with better conductivity and mechanical strength is adopted as a material.

Generally, the terminal structure can be designed in two ways, one is a stamping plane blanking terminal (called blanking terminal for short), and the other is a stamping bending forming terminal (called forming terminal for short).

Since the female terminal of the narrow plate type needs to have sufficient elasticity and a complicated shape, if the press forming method is adopted, the press forming process is difficult, and the forming dimension and precision are not easy to control. Therefore, the female terminal is formed, and the male terminal can be flexibly selected from a blanking mode or a forming mode according to the use condition of a connector product.

3. Plastic body structure and raw material

The structure and raw material selection of the plastic part directly influence the function and application of the SMT process. Not only is there concern about the ability of plastics to withstand high temperatures during ir reflow soldering, but also the ability to withstand impact is a concern. If the plastic is too soft, the dimensional accuracy after molding may be low, and the plastic may be easily deformed. If too hard plastic is selected, the plastic will be cracked due to impact, so the plastic is required to have high temperature resistance and low thermal expansion coefficient, and is required to be suitable for injecting a thin-walled structure with small spacing, and maintain certain strength and toughness.

The plastic body is usually made of LCP (liquid crystalline polymer), and the LCP has other excellent characteristics to provide good performance and stable quality for the BTB connector.

4. Male and female insertion height

The overall size and height of the connector are determined by the layout of the PCB, and in order to save space, the total height of the male and female connectors after being plugged is generally determined by the maximum height of other components on the PCB.

However, a BTB connector of a blanking terminal type, which is compact in structure, high in reliability and convenient to assemble, is still lacking.

Disclosure of Invention

In view of the above-mentioned deficiencies in the prior art, the present invention provides a blanking terminal type BTB connector having the advantages of compact structure, high reliability, and convenient assembly.

In order to achieve the above object, the present invention provides a BTB connector of a blanking terminal type, comprising a male socket and a female socket; the female socket comprises a female socket body and a plurality of female terminals which are connected, the male socket comprises a male socket body and a plurality of male terminals which are connected, and the male terminals are distributed on two sides of the male socket body; female socket body form with a public socket mounting groove of public socket shape complex, public socket install in the public socket mounting groove, public terminal with the position one-to-one of female terminal, just public terminal with female terminal forms the buckle structure of mutually supporting and passes through buckle structure buckle is connected.

Preferably, the female terminal comprises a first pin part, a connecting part and a buckling part, the buckling part is U-shaped, and the inner sides of the tops of two ends of the buckling part form a convex part respectively; the male terminal comprises a second pin part and an inserting part, a limiting part matched with one of the convex parts is formed on one side of the inserting part, and a clamping groove matched with the other convex part is formed on the other side of the inserting part; the inserting part is inserted into the buckling part, one of the protruding parts is connected with the clamping groove in a buckling mode, and the other protruding part limits the limiting part.

Preferably, the BTB connector is 3mm wide, 8.4mm long and 0.6mm high.

Preferably, the width of the insertion part is 0.48mm, and the height of the limiting part is 0.02 mm; the distance between the two convex parts is 0.4 mm.

Preferably, the horizontal distance between the top end of the convex part and the top end of the limiting part is 0.03 mm; the depth of the clamping groove is more than or equal to 0.05 mm.

Preferably, the female socket includes 30 female terminals, and the male socket includes 30 male terminals.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

the male terminal and the female terminal form mutually matched buckle structures and are connected through the buckle structures in a buckled mode, so that the BTB connector of the blanking terminal type is compact in structure, high in reliability and convenient to assemble.

Drawings

Fig. 1 is a schematic structural view of a BTB connector of a blanking terminal type according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first embodiment of the invention when a male socket and a female socket are separated;

fig. 3 is a sectional view of a BTB connector of a blanking terminal type according to a first embodiment of the present invention;

fig. 4 is a schematic structural view illustrating a female terminal and a male terminal separated according to a first embodiment of the present invention;

fig. 5 is a sectional view of a BTB connector of a blanking terminal type according to a first embodiment of the present invention.

Detailed Description

The following description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings of fig. 1 to 5, and will make the functions and features of the present invention better understood.

Referring to fig. 1 and 2, a BTB connector of a blanking terminal type according to an embodiment of the present invention includes a male socket 1 and a female socket 2; the female socket 2 comprises a female socket body 21 and a plurality of female terminals 22 which are connected, the male socket 1 comprises a male socket body 11 and a plurality of male terminals 12 which are connected, and the male terminals 12 are distributed on two sides of the male socket body 11; female socket body 21 forms a public socket mounting groove 211 with public socket 1 shape fit, and public socket 1 installs in public socket mounting groove 211, and public terminal 12 and female terminal 22's position one-to-one, and public terminal 12 forms the buckle structure of mutually supporting and is connected through buckle structure buckle with female terminal 22.

In this embodiment, the BTB connector is 3mm wide, 8.4mm long and 0.6mm high.

Referring to fig. 3 to 5, the female terminal 22 includes a first lead portion 221, a connecting portion 222 and a locking portion 223, the locking portion 223 is U-shaped, and a protrusion 2231 is formed on the inner side of the top of each of two ends of the locking portion 223; the male terminal 12 includes a second pin portion 121 and a plug portion 122, a limiting portion 1221 matched with one protruding portion 2231 is formed on one side of the plug portion 122, and a slot matched with the other protruding portion 2231 is formed on the other side of the plug portion 122; the inserting portion 122 is inserted into the fastening portion 223, and one of the protruding portions 2231 is fastened to the slot, and the other protruding portion 2231 limits the position of the limiting portion 1221.

The width of the insertion part 122 is 0.48mm, and the height of the limiting part 1221 is 0.02 mm; the distance between the two convex portions 2231 is 0.4 mm. The horizontal distance between the top end of the convex part 2231 and the top end of the limiting part 1221 is 0.03 mm; the depth of the clamping groove is more than or equal to 0.05 mm.

The male terminal 12 may take the shape of fig. 3 or fig. 5.

Female receptacle 2 includes 30 female terminals 22 and male receptacle 1 includes 30 male terminals 12.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.

Claims

1. A BTB connector of a blanking terminal type is characterized by comprising a male socket and a female socket; the female socket comprises a female socket body and a plurality of female terminals which are connected, the male socket comprises a male socket body and a plurality of male terminals which are connected, and the male terminals are distributed on two sides of the male socket body; female socket body form with a public socket mounting groove of public socket shape complex, public socket install in the public socket mounting groove, public terminal with the position one-to-one of female terminal, just public terminal with female terminal forms the buckle structure of mutually supporting and passes through buckle structure buckle is connected.

2. A BTB connector of blanking terminal type according to claim 1, wherein said female terminal comprises a first pin portion, a connecting portion and a locking portion, said locking portion is U-shaped, and a protrusion is formed on the inside of the top of each of the two ends of said locking portion; the male terminal comprises a second pin part and an inserting part, a limiting part matched with one of the convex parts is formed on one side of the inserting part, and a clamping groove matched with the other convex part is formed on the other side of the inserting part; the inserting part is inserted into the buckling part, one of the protruding parts is connected with the clamping groove in a buckling mode, and the other protruding part limits the limiting part.

3. A BTB connector of blanking terminal type according to claim 2, characterized in that it is 3mm wide, 8.4mm long and 0.6mm high.

4. A BTB connector of blanking terminal type according to claim 3, wherein the width of the plug part is 0.48mm and the height of the limit part is 0.02 mm; the distance between the two convex parts is 0.4 mm.

5. A BTB connector of blanking terminal type according to claim 4, characterized in that the horizontal distance of the boss top end to the stopper top end is 0.03 mm; the depth of the clamping groove is more than or equal to 0.05 mm.

6. A BTB connector of the blanking terminal type according to claim 5, characterized in that the female socket comprises 30 female terminals and the male socket comprises 30 male terminals.