TWI730761B - Terminal structure of electrical connector - Google Patents

Abstract

The present invention provides a terminal structure of an electrical connector, which is formed inside the mating portion of the base body to form a mating space with an opening in the front and for inserting edge cards, and the accommodation at the upper and lower side walls of the mating space behind the mating part A blocking wall is provided between the accommodating grooves, and a plurality of fixed terminals of the terminal group opposite to each other are penetrated into each accommodating groove, and contact terminals are positioned between the fixed terminals of the upper and lower sides, and the contact terminals are blocked by the blocking wall The inner base part, and the upper and lower sides of the base part respectively extend forward with contact parts. When the electrical connector and the edge card transmit power, the two upper and lower contact parts of the contact terminal can be pressed against the edge card by a plurality of contact points on the inner side to form a double Rows of contact transmission paths, and the contact part is held against the fixed end of the fixed terminal to increase the contact area, increase the path and area of current transmission, and provide higher power transmission under the same edge card, and can reduce it The characteristic impedance is not prone to overheating.

Description

Terminal structure of electric connector

The present invention provides a terminal structure of an electrical connector, in particular, that the inside of the mating portion of the base body is provided with a plurality of fixed terminals opposite to each other in the terminal group, and a contact terminal is positioned between each of the two upper and lower fixed terminals, which can pass through the two contact terminals. The double-row contact design of multiple contact points on the inner side of the upper and lower contact parts improves the path and area of current transmission.

According to, general connectors are used to connect components and accessories of electronic signals and power supplies. The main function is to provide connections between various electronic devices or equipment, and to ensure accurate signal transmission. The connectors follow their applications. , Power and use environment, etc., it has developed a variety of different types, and can be applied to computers, servers, computer peripherals (such as keyboards, mice, printers, etc.), the peripherals of the car host (such as Car computers or satellite navigation, etc.), telecommunications or communication equipment and household appliances and other products.

However, with the rapid development of modern technology, the computing speed of electronic devices is getting faster and faster. When the processing speed of the electronic device is increased, the power consumed by it also increases, and the power that the electrical connector can carry needs to be increased accordingly. And the increase in power means that the power supply circuit needs to provide more transmission current, and the large current will cause the electrical connector to produce characteristic impedance and temperature change, which will affect the effect of electrical transmission, so the electrical connector must be able to withstand large current at the same time And the characteristics of low characteristic impedance can meet the development trend of current electronic devices.

Therefore, how to solve the above-mentioned conventional problems and deficiencies is the direction that people in this industry urgently want to study and improve.

Therefore, in view of the above-mentioned deficiencies, the inventor collected relevant information, evaluated and considered from many parties, and continued to make trials and modifications based on years of experience in this industry, and began to develop and design the terminal structure invention of this electrical connector The patent was born.

The main purpose of the present invention is to form a docking space inside the docking portion of the base body for the insertion of the edge card, and to penetrate into the accommodating grooves at the upper and lower side walls of the docking space. The terminals, and the contact terminals located between the two upper and lower fixed terminals, when the electrical connector and the edge card transmit power, they can be held against the edge card by a plurality of contact points on the opposite inner side of the two upper and lower contact parts of the contact terminal to form a double-row contact The transmission path of the fixed terminal is resisted by the contact part on the fixed end of the fixed terminal, so that large current can be improved through the double-row contact design of the contact terminal to improve the current transmission path and area of the fixed terminal, and can provide higher current under the same edge card. Power transmission, and can effectively reduce its characteristic impedance without overheating.

1: seat body

11: Docking Department

110: Docking Space

1101: opening

1102: front stop

111: accommodating slot

112: blocking wall

1121: Positioning bump

113: Partition

12: Terminal slot

2: terminal group

21: fixed terminal

211: fixed end

2111: turning surface

2112: plane

2113: Resistant bump

212: Welding Department

22: Contact terminal

221: base

2211: perforation

222: Contact

2220: Flexible Space

2221: contact point

2222: groove

2223: elastic arm

2224: Resisting End

2225: elastic arm

2226: Touch Point

2227: groove

2228: Convergence

3: Signal terminal

31: Base

32: contact end

33: Welding end

[Figure 1] is a perspective view of a preferred embodiment of the present invention.

[Figure 2] is an exploded perspective view of a preferred embodiment of the present invention.

[Figure 3] is a perspective exploded view of the preferred embodiment of the present invention from another perspective.

[Figure 4] is a cross-sectional side view of a preferred embodiment of the present invention.

[Figure 5] is a perspective view of another preferred embodiment of the present invention.

[Figure 6] is an exploded perspective view of another preferred embodiment of the present invention.

[Figure 7] is a perspective exploded view of another preferred embodiment of the present invention from another perspective.

[Figure 8] is a side sectional view of another preferred embodiment of the present invention.

In order to achieve the above-mentioned purposes and effects, the technical means and structure adopted by the present invention are illustrated in detail below to illustrate the structure and functions of the preferred embodiments of the present invention, so as to fully understand.

Please refer to Figures 1 to 4, which are respectively a three-dimensional appearance view, a three-dimensional exploded view, a three-dimensional exploded view and a side cross-sectional view of a preferred embodiment of the present invention, which can be clearly seen from the figures. The terminal structure of the electrical connector of the present invention includes a base body 1 and a terminal group 2, in which: The base 1 has at least one docking portion 11, and a docking space 110 with an opening 1101 at the front is formed inside the docking portion 11, and the upper and lower side walls of the docking space 110 are respectively provided with at least one container extending backward and penetrating to the outside. The placement groove 111. In this embodiment, the butting portion 11 is located on the upper and lower side walls of the butting space 110. Five accommodating grooves 111 are arranged horizontally and spaced apart from each other, and are adjacent to each other two up and down behind the butting portion 11. A vertical blocking wall 112 is respectively provided between the accommodating grooves 111, and a partition 113 extending to the upper and lower side walls of the front opening 1101 can also be provided between the two adjacent blocking walls 112; The butting portion 11 of 1 is located at the upper and lower side walls of the opening 1101 in front of the docking space 110. At least one front stop 1102 is respectively formed, which is preferably formed at the corners of the inner wall of the opening 1101 adjacent to the partition 113. There is a front stop 1102.

The terminal set 2 includes at least one set facing up and down The plurality of fixed terminals 21 positioned in the accommodating groove 111 are penetrated forwards, and the contact terminals 22 are pushed back through the opening 1101 in the front of the mating space 110 and are located between the two upper and lower fixed terminals 21, wherein the plate of the fixed terminal 21 The front of the body is respectively provided with horizontal fixed ends 211 located inside the opening 1101 of the mating space 110, and at the rear of the plate body are respectively provided with welding parts 212 extending out of the base 1 and then bent downwards, and the upper fixed terminal 21 The rear of the plate body is bent downwards toward the welding part 212 to form a bent piece, and the contact terminal 22 has a base 221 that is stopped at the inner side of the blocking wall 112 and has openings 1101 on the upper and lower sides of the base 221 respectively. Opposite contact parts 222 are extended, and the middle section of the two upper and lower contact parts 222 is formed with a plurality of contact points 2221 arranged in a transversely spaced and arched shape at the inner side of the two upper and lower contact parts 222, and then formed between the two adjacent contact points 2221 on the left and right sides. There is a groove 2222, and the contact portion 222 is located a distance from the front and rear of the contact point 2221, and then there are finger-like elastic arms 2223 respectively extending outwards to resist the inner surfaces of the fixed ends 211 of the two upper and lower fixed terminals 21 An electrical connection is formed, and the two outer sides of the elastic arm 2223 respectively extend forward to resist the resisting ends 2224 on the front block 1102 to prevent exit.

In addition, the mating portion 11 of the base body 1 can also be further provided with upper and lower row terminal grooves 12 communicating with the mating space 110 at the side of the accommodating groove 111, and the terminal grooves 12 are respectively provided with signal terminals 3 The base 31, and the front of the base 31 are respectively provided with contact ends 32 that extend into the inner side of the opening 1101, and the rear of the base 31 extends out of the seat body 1, respectively, and there are respectively downwardly bent welding ends 33, but this is not the case. To be limited, the design can also be changed according to the purpose or function used, so the contents of the following manuals in this case are all explained together and presented together.

When the electrical connector of the present invention is mounted on a circuit board, the base 1 is first The bottom part can use positioning terminals or positioning posts (not shown in the figure, it is a common technology known in the industry) to respectively penetrate into the corresponding limit holes on the circuit board, and make the welding part 212 and the signal terminal 3 of the terminal set 2 The soldering end 33 can be electrically connected with the circuit board by means of through-hole soldering.

The electrical connectors include, but are not limited to, male electrical connectors, edge cards, power control cards, etc., and the edge card is taken as an example in the following manual. When the edge card is connected to the base 1 of the electrical connector At this time, the plug-in part will be inserted into the mating space 110 from the opening 1101 of the mating part 11, and pushed against the two upper and lower contact parts 222 of the contact terminal 22 and the contact end 32 of the signal terminal 3 to be elastic upward and downward. After deforming and inserting the edge card into position, the contact portion 222 of the contact terminal 22 can be pressed against the corresponding metal contacts on the plug-in portion with a plurality of contact points 2221 to form an electrical connection, and the signal terminal 3 can be contacted The ends 32 are respectively held against the corresponding metal contacts on the plug-in portion to form electrical connections, and during the process of pushing up the two upper and lower contact portions 222 of the contact terminal 22, not only can the base portion 221 of the contact terminal 22 stop backwards from the butting The inner side of the blocking wall 112 of the part 11 prevents it from exiting. The groove 2222 of the contact part 222 located between the two adjacent contact points 2221 can also provide the margin of elastic deformation, or it can match the contact of the edge card insertion. Strength makes it difficult to cause structural damage.

When the electrical connector and the edge card are transmitting power, the multiple contact points 2221 of the two upper and lower contact parts 222 of the contact terminal 22 can be resisted on the edge card to form a double-row contact transmission path, and the contact points 2221 are between the front and back. The elastic arm 2223 resists the fixed ends 211 of the two upper and lower fixed terminals 21 to increase the contact area, so that large currents can be improved through the double-row contact design of the contact terminals 22 to improve the current transmission path and surface of each group of fixed terminals 21 The product is then transmitted to the circuit board for use. Under the same edge card, the double-row contact design of the terminals of this electrical connector can provide higher power transmission and effectively reduce its characteristic impedance (referring to the high frequency The resistance of a signal or electromagnetic wave during transmission includes electrical impedance, inductive reactance, and capacitive reactance, which can also be defined as the relationship between current and voltage), and it is not easy to generate overheating, thereby achieving the effect of improving transmission efficiency and improving safety.

Please refer to Figures 5 to 8, which are respectively a three-dimensional appearance view, a three-dimensional exploded view, a three-dimensional exploded view and a side cross-sectional view of another preferred embodiment of the present invention. It can be seen that the electrical connector in this embodiment is roughly the same in structure and assembly as the base 1 and the terminal set 2 shown in Figures 1 to 4, and the two structures mainly have only the fixed ends of the fixed terminals 21 The configuration of the contact portion 222 of the 211 and the contact terminal 22 is different. The difference is that the two fixed ends 211 of each group of the upper and lower fixed terminals 21 are relatively outwardly bent to form a turning surface 2111, and then a flat surface 2112 is formed forwardly. A distance behind the turning surface 2111 is formed with a resisting protrusion 2113 that is at the same level as the plane 2112, and the contact terminals 22 are arranged at the opposite inner sides of the two upper and lower contact portions 222 with a plurality of arches extending from front to back. The arm 2225 has a contact point 2226 formed in the middle of the elastic arm 2225, and a groove 2227 is formed between the two adjacent elastic arms 2225, which are connected in front of the elastic arm 2225 by a transverse connecting section 2228 to form a surrounding A frame-shaped elastic space 2220, and each elastic arm 2225 and the connecting section 2228 are respectively held against the fixed ends 211 and the flat surface 2112 of the two upper and lower fixed terminals 21 to form an electrical connection, which can improve the elastic arm 2225's ability to withstand The power of edge card pushing.

In addition, the above-mentioned seat body 1 is further provided with a positioning protrusion 1121 at the inner side of the blocking wall 112, and a through hole 221 is provided on the base 221 of the contact terminal 22 1. When the fixed ends 211 of each group of fixed terminals 21 are respectively penetrated forwards into the mating space 110 from the receiving groove 111 at the back of the base 1, the base 221 of the contact terminal 22 can be opened from the front of the base 1. 1101 is pushed back into the docking space 110, and the blocking wall 112 of the docking portion 11 penetrates the through hole 2211 of the base 221 with the positioning protrusion 1121 to form a positioning, and the contact terminal 22 can pass through the connecting section 2228 in front of the contact portion 222 The front stopper 1102 is held against the upper and lower side walls of the opening 1101 to prevent it from exiting, and the overall structure is more stable.

The above detailed description is only for a preferred and feasible embodiment of the present invention, but the embodiment is not intended to limit the scope of the patent application of the present invention. All other equal changes and modifications made without departing from the spirit of the technique disclosed in the present invention All changes shall be included in the scope of patent covered by the present invention.

In summary, the above-mentioned terminal structure of the electrical connector of the present invention can indeed achieve its effects and purposes when used. Therefore, the present invention is truly an invention with excellent practicability. In order to meet the requirements of an invention patent application, it is proposed in accordance with the law. For the application, I hope that the review committee will grant this case as soon as possible to protect the inventor’s hard work. If the review committee of the Bureau has any doubts, please feel free to write instructions. The inventor will do his best to cooperate.

1: seat body

11: Docking Department

110: Docking Space

1101: opening

1102: front stop

111: accommodating slot

113: Partition

12: Terminal slot

2: terminal group

21: fixed terminal

211: fixed end

212: Welding Department

22: Contact terminal

221: base

222: Contact

2221: contact point

2222: groove

2223: elastic arm

2224: Resisting End

3: Signal terminal

31: Base

32: contact end

33: Welding end

Claims (8)

A terminal structure of an electrical connector, comprising: a butting space with a front opening is formed inside the butting portion of a base body, and at least one accommodating groove extending backward and penetrating to the outside is respectively provided on the upper and lower side walls of the butting space , And a blocking wall is respectively provided between the upper and lower adjacent accommodating grooves behind the mating portion; and a terminal set includes at least one set of fixed terminals which are opposed to each other up and down and penetrate forwardly into the accommodating groove, and are located in the accommodating groove. The contact terminals between the fixed terminals are respectively provided with a horizontal fixed end located inside the opening in front of the fixed terminals, and a welding part extending outside the base is respectively provided behind the fixed terminals, and the contact terminal There is a base located inside the blocking wall, and the upper and lower sides of the base respectively extend forwardly with contact portions that resist on the inner surfaces of the fixed ends of the upper and lower opposite fixed terminals to form electrical connections, and the contact portions A plurality of contact points arranged laterally at intervals and in an arched shape and grooves located between the left and right adjacent contact points are formed on the relatively inner side. According to claim 1, the terminal structure of the electrical connector, wherein the mating portion of the base body is arranged at the upper and lower side walls of the mating space with a plurality of accommodating grooves arranged in a horizontally spaced manner, and the accommodating grooves are arranged adjacently on the left and right sides. A partition plate extending to the upper and lower side walls of the opening in front of the docking space is respectively arranged between the grooves. The terminal structure of the electrical connector according to claim 1, wherein the contact portion of the contact terminal is located at the front and rear of the contact points and respectively extends relatively outward to resist the fixed ends of the fixed terminals to form an electrical connection The elastic arm. According to claim 3, the terminal structure of the electrical connector, wherein the seat body is located at the upper and lower side walls of the opening in front of the mating space. The contact parts of the contact terminal respectively extend forward at the two outer sides of the elastic arm to resist the resisting ends of the front stopper. According to the terminal structure of the electrical connector according to claim 1, wherein each group of upper and lower fixed terminals is formed by two fixed ends that are relatively outwardly bent to form a turning surface, and then a plane is formed forward, and is located between the fixed ends A distance behind the turning surface is formed with a resisting bump at the same level as the plane. The terminal structure of the electrical connector according to claim 1, wherein the contact terminal is located at the relatively inner side of the contact portions, and is arranged with a plurality of elastic arms extending from the front to the rear at a horizontal interval, and is formed at the middle section of the elastic arms There are contact points, and a groove is respectively formed between the left and right adjacent elastic arms, and the front of the elastic arms is connected by a transverse connecting section to surround and form a frame-shaped elastic space. According to claim 6, the terminal structure of the electrical connector, wherein the upper and lower side walls of the front opening of the mating space of the seat body are respectively formed with at least one front stopper, and the contact part of the contact terminal is held by the connecting section On the front stop. The terminal structure of the electrical connector according to claim 1, wherein the inner side of the blocking wall of the seat body is provided with a positioning protrusion, and the base of the contact terminal is provided with a through hole for the positioning protrusion to penetrate therein .

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