CN101197473A - Terminal structure of electric connector - Google Patents

Abstract

The invention provides a terminal structure of an electric connector, which is assembled in a terminal groove of a plastic seat body and integrally formed by stamping a metal sheet, wherein the metal sheet has a plate surface and a plate thickness, and the terminal structure comprises: the plate surface of the fixing part is longitudinally fixed in the terminal groove of the plastic seat body, and the plate surface is wider so as to be fixed with the terminal groove of the plastic seat body; the elastic arm is connected to the lower end of the fixing part and is folded upwards, the plate surface of the elastic arm is narrower than that of the fixing part, a longitudinal plate surface is formed in a plate surface blanking mode, the elastic arm is gradually bent upwards to one side of the fixing part and extends beyond the upper end of the fixing part, and the upper end of the elastic arm is provided with a contact point which is contacted in the vertical direction; by the structure, the advantages of good contact elasticity of the elastic arm of the terminal, easy manufacture and small space occupied by the terminal slot when the terminal is assembled can be achieved.

Description

Terminal structure of electrical connector

technical field

The invention relates to an electrical connector, in particular to a terminal structure of an electrical connector with up and down contact spring.

Background technique

The bottom surface of a chip (such as a CPU) is formed with a plurality of contacts arranged at intervals, and the electrical connector connecting the chip uses downward pressure to fix the chip on the seat, so that the contacts of the chip are arranged in the terminal groove of the seat. The terminals are elastically contacted to maintain electrical connection.

Figures 1 and 2 are an electrical connector for connecting chips, which is provided with: a base body 10, on which a plurality of terminal grooves 11 are arranged; and a plurality of terminals 20, arranged in the terminal grooves 11 of the base body , the terminal 20 is provided with an elastic arm 21 that can bounce up and down, a fixed part 22, and a connecting piece 23. The fixed part 21 is tightly fixed to the terminal groove 11, and its lower end is folded back into a second plate 24 extending upward. The elastic arm 21 is connected to the second plate 24 of the fixing part 22, and its plate surface is bent upwards to one side 12 of the terminal groove 11 and then bent and extended beyond the other side 13, and a protruding contact point 25 is provided near the end, and the connecting piece 23 protrudes from the seat body 10 and combined with solder balls 28 .

When the chip is placed on the base body 10 , each contact point of the chip touches the contact point 25 of each terminal 20 , and each terminal 20 tightly abuts against the contact point of the chip through the elasticity of the elastic arm 21 to realize electrical connection.

The known structure has the following disadvantages: 1. The elastic arm 20 of the terminal uses the bending of the board to obtain the elasticity of bouncing up and down, so the terminal groove 11 needs to have a sufficient length as the space for the elastic arm 21 to bend, 2. The elastic arm 21 It is not easy to accurately control the size of the plate surface during stamping and bending, so the cost of stamping is relatively increased.

Contents of the invention

The main purpose of the present invention is to provide a terminal structure of an electrical connector. The elastic arm of the terminal is folded upward from the lower end of the fixed part and extends toward the side of the fixed part plate, so that the terminal can be easily manufactured and the terminal slot can be occupied during assembly. The space is small, and the effect of good elasticity.

In order to achieve the above object, the terminal structure of the electrical connector of the present invention is assembled in the terminal groove of the plastic seat body, which is formed by integral stamping of a metal sheet, and the metal sheet has a plate surface and a plate thickness, which includes: a fixing part, The plate surface of the fixing part is longitudinally fixed in the terminal groove of the plastic seat body, and the plate surface of the fixing part is wider so as to be fixed with the terminal groove of the plastic seat body; and the elastic arm is connected to the lower end of the fixing part and folded upward, The plate surface is narrower than the fixed part, and the elastic arm forms a longitudinal plate surface by blanking the plate surface. The elastic arm bends toward the fixed part side and gradually extends upward beyond the upper end of the fixed part. The upper end is provided with a contact point that contacts in the up and down direction.

Through the above structure, good contact elasticity of the elastic arm of the terminal, convenient manufacture, and less space occupied by the terminal slot during assembly can be achieved.

The above and other objects, advantages and features of the present invention will be apparent from the following detailed description of the preferred embodiments with reference to the accompanying drawings.

Description of drawings

FIG. 1 is an exploded perspective view of a known electrical connector.

Fig. 2 is a cross-sectional assembled view of a known electrical connector.

Fig. 3 is a sectional assembled view of the connector of the preferred embodiment of the present invention.

Fig. 4 is a perspective view of a first embodiment of the present invention.

Fig. 5 is a developed plan view of the first embodiment of the present invention.

Fig. 6 is a schematic view of the use state of the first embodiment of the present invention.

Fig. 7 is a plan view of a second embodiment of the present invention.

Fig. 8 is a plan view of a third embodiment of the present invention.

Fig. 9 is a plan view of a fourth embodiment of the present invention.

Fig. 10 is a plan view of a fifth embodiment of the present invention.

Fig. 11 is a plan view of a sixth embodiment of the present invention.

Fig. 12 is a plan view of a seventh embodiment of the present invention.

Fig. 13 is a plan view of an eighth embodiment of the present invention.

Fig. 14 is a plan view of a ninth embodiment of the present invention.

Fig. 15 is a schematic plan view of the tenth embodiment of the present invention during manufacture.

Fig. 16 is a side view of a tenth embodiment of the present invention.

Fig. 17 is a side view of an eleventh embodiment of the present invention.

Fig. 18 is a side view of a twelfth embodiment of the present invention.

Detailed ways

3 and 4, the electrical connector of this embodiment includes: a plastic base 30 and a plurality of terminals 40, wherein:

The plastic seat body 30 is provided with multiple rows of terminal grooves 31 arranged at intervals.

Referring to FIG. 5 , a plurality of terminals 40 are integrally stamped with a metal sheet 50 to form a continuous row of terminals connected by a strip 53. The metal sheet 50 has a plate surface 51 and a thickness 52. The entire row of continuous terminals 40 consists of Assembled from top to bottom, each terminal 40 includes: a fixed part 41, which is longitudinally fixed in the terminal groove 31 of the plastic seat body 30, the plate surface of the fixed part 41 is wider so as to be fixed with the terminal groove 31 of the plastic seat body 30, and its upper end 43 is connected with the material belt 53; the elastic arm 45 is connected to the middle 42 of the lower end of the fixed part 41 and folded upwards. The plate surface of the elastic arm 45 is narrower than the plate surface of the fixed part 41 and overlaps, and is passed through the blanking of the plate surface. Form a longitudinal plate surface in a manner, and gradually bend upward from the middle of the fixed part 41 to one side and then to the other side, and exceed the upper end and one side of the fixed part 41. 46 , the contact 46 has the thickness of a metal sheet; and two connecting pieces 48 are connected to both sides of the lower end of the fixing portion 41 , and the solder balls 55 are connected and fixed through the connecting pieces 48 .

Through the above structure, since the elastic arm 45 of the terminal 40 is folded upward from the lower end of the fixed part 41 and extends upwards and beyond the side of the fixed part to the terminal groove 31 of the partition wall, the elastic arm 45 can have a large force arm and therefore has a better elasticity. As shown in Figure 6, when the chip 60 is put into contact with the terminal 40, the elastic arm 45 of the terminal shrinks elastically, and the contact 46 can elastically contact the contact 61 of the chip 60, and the elastic arm 60 of the terminal is inclined downward but extends upward, so It will not touch the terminal 41 on the next wall to cause a short circuit. In addition, since the plate surface of the elastic arm 45 is inclined longitudinally toward one side of the fixing portion 41 and extends upward, the length of the terminal groove 41 can be shortened, which is more conducive to space allocation, and more terminal grooves can be designed. In addition, the elastic arm 45 of the terminal is formed by blanking instead of bending, so it is easy to control the size and manufacture during manufacture.

Through the above description, the present invention has the following advantages:

1. The elastic arm 45 of the terminal 40 folds back from the lower end of the fixing portion 41 and extends upwards and beyond the side of the fixing portion to the terminal groove 31 of the partition wall, so the elastic arm 45 has excellent elasticity.

2. The plate surface of the elastic arm 45 of the terminal 40 extends vertically toward the side of the fixed part 41, so the length of the terminal groove 41 can be shortened, which is more conducive to the configuration of the space, and more terminal grooves can be designed, and Terminals are easy to manufacture.

3. The elastic arm 45 of the terminal 40 is formed by blanking instead of bending, so it is easy to control the size and manufacture during manufacture.

Fig. 7 is the second embodiment of the present invention, which is roughly the same as the first embodiment, the difference is that the elastic arm 45 of the terminal 40 is folded back from the left side of the lower end of the fixed part 41 and then extends to the right side, and the lower end of the fixed part 41 A connecting piece 48 is connected downwards in the middle.

Fig. 8 is the third embodiment of the present invention, which is roughly the same as the first embodiment, the difference is that the elastic arm 45 of the terminal 40 is folded up from the right side of the lower end of the fixing part 41, and first bends slightly to the right and then to the left. A large curved arc finally exceeds the right side of the fixed part, and the middle of the lower end of the fixed part 41 is connected with a connecting piece 48 downwards.

FIG. 9 is a fourth embodiment of the present invention, which is roughly the same as the second embodiment, except that the connecting piece 48 is connected to the right side of the lower end of the fixing portion 41 .

FIG. 10 is a fifth embodiment of the present invention, which is substantially the same as the third embodiment, except that the connecting piece 48 is connected to the left side of the lower end of the fixing portion 41 .

Fig. 11 is the sixth embodiment of the present invention, which is roughly the same as the first embodiment, the difference is that the elastic arm 45 of the terminal 40 is folded back from the right side of the lower end of the fixed part 41 to form a large curved arc upwards and directly to the left, and finally beyond The right side of the fixed part protrudes, and the lower end of the fixed part 41 is connected with a connecting piece 48 on the left side.

12 is a seventh embodiment of the present invention, which is roughly the same as the sixth embodiment, except that the lower section of the elastic arm 45 of the terminal 40 is oblique, and the lower end of the fixing part 41 is connected with a connecting piece 48 in the middle.

Fig. 13 is the eighth embodiment of the present invention, which is roughly the same as the first embodiment, the difference is that the elastic arm 45 of the terminal 40 extends upwards for a longitudinal length from the right side of the lower end of the fixing part 41, and then forms a bend to the left. The arc finally exceeds the right side of the fixed part, and the lower end of the fixed part 41 is connected with a connecting piece 48 in the middle.

FIG. 14 is a ninth embodiment of the present invention, which is substantially the same as the sixth embodiment, except that the elastic arm 45 of the terminal 40 extends upward and does not exceed the right side of the fixing portion 41 .

Fig. 15 and Fig. 16 are the tenth embodiment of the present invention, roughly the same as the first embodiment, the difference is that the contact point 46 of the elastic arm 45 of the terminal 40 is formed by folding two board surfaces, and the contact point 46 is formed into an arc surface instead of being cut off. of plate thickness.

FIG. 17 is an eleventh embodiment of the present invention, which is substantially the same as the first embodiment, except that the contact point 46 of the elastic arm 45 of the terminal 40 is formed by bending the board.

Fig. 18 is the twelfth embodiment of the present invention, which is roughly the same as the first embodiment, except that the contact point 46 of the elastic arm 45 of the terminal 40 is a horizontal flange formed by material extrusion.

The specific embodiment proposed in the detailed description of the preferred embodiment is only for the purpose of easily illustrating the technical content of the present invention, and the present invention is not limited to this embodiment in a narrow sense, without going beyond the essence of the present invention and the following claims Various changes can be made.

[reference sign]

Plastic seat body 30 Terminal groove 31

Terminal 40 Metal Sheet 50 Strip 53 Board Surface 51

Plate thickness 52 Fixed part 41 Lower middle 42 Upper 4

Elastic arm 45 Contact 46 Connecting piece 48 Solder ball 55

Claims (11)

1. A terminal structure of an electrical connector, which is assembled in a terminal groove of a plastic seat body, the terminal structure is formed by integral stamping of a metal sheet, and the metal sheet has a plate surface and a plate thickness, and the terminal structure includes : a fixing part, the plate surface of the fixing part is longitudinally fixed in the terminal groove of the plastic seat body, and the plate surface of the fixing part is wider so as to be fixed with the terminal groove of the plastic seat body; and The elastic arm is connected to the lower end of the fixed part and folded upwards. The plate surface of the elastic arm is narrower than the fixed part. The elastic arm uses the blanking method to form a longitudinal plate surface. The upper end of the fixing part is provided with a contact point that contacts in the up and down direction. 2 . The terminal structure of an electrical connector according to claim 1 , wherein the terminal structure can be connected by strips to form terminals arranged continuously, and the upper end of the fixing part is connected to the strips. 3 . 3 . The terminal structure of an electrical connector as claimed in claim 1 , wherein a board surface of the elastic arm overlaps with a board surface of the fixing portion. 4 . 4. The terminal structure of an electrical connector according to claim 1, wherein a connecting piece is provided at a lower end of the fixing portion. 5 . The terminal structure of an electrical connector according to claim 4 , wherein the connecting piece is combined with a solder ball. 6. The terminal structure of an electrical connector according to claim 1, wherein the board surfaces of the elastic arms are in the same plane. 7 . The terminal structure of an electrical connector as claimed in claim 1 , wherein the contact point of the elastic arm exceeds one side of the fixing portion. 8 . 8. The terminal structure of an electrical connector as claimed in claim 1, wherein the contact point of the elastic arm is the thickness of the metal plate. 9 . The terminal structure of an electrical connector according to claim 1 , wherein the contact position of the elastic arm is formed by folding two boards, and the contact is formed into an arc surface instead of a cut board thickness. 10 . The terminal structure of an electrical connector according to claim 1 , wherein the contact point of the elastic arm is formed by bending a board. 11 . 11 . The terminal structure of an electrical connector according to claim 1 , wherein the contact point of the elastic arm is a horizontal flange with reduced plate thickness formed by material extrusion. 12 .

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