CN203326160U - Card edge connector - Google Patents

Abstract

The utility model discloses a card edge connector for connecting an electronic card and a circuit board. The card edge connector includes a base and a first row of terminals. The first side wall and the second side wall on the upper and lower sides of the slot, the electronic card slot is provided with a key button connecting the first and second side walls, the first side wall has a circuit board mounting surface, and each A first row of terminals includes a holding portion with a first end, an electronic card contact arm extending from one side of the first end of the holding portion into the electronic card slot, and a base portion extending from the other side of the first end of the holding portion The connecting part of the circuit board, the holding part is fixed on the first side wall and extends in the same direction as the contact arm of the electronic card, and the length of the holding part of the first row of terminals is greater than 0.45 mm and less than 1 mm. By reducing the length of the holding portion of the first row of terminals, the capacitance of the first row of terminals is reduced, the terminal reactance is increased, and the electrical performance of the card edge connector is improved.

Description

card edge connector

【Technical field】

The utility model relates to a card edge connector, in particular to a card edge connector suitable for working in a high-frequency environment. the

【Background technique】

China Taiwan New Patent No. M363116 discloses a card edge connector. The card edge connector includes an insulating body and conductive terminals held on the insulating body. The insulating body has a base and an electronic card recessed from the front surface of the base. The conductive terminal includes a holding part held on the base, an electronic card contact arm extending from one side of the holding part into the electronic card slot, and a circuit board connecting part extending out of the base from the other side of the holding part. The maximum width of the holding part of the conductive terminal, the contact arm of the electronic card and the connection part of the circuit board is not greater than 1.8 times the thickness of the conductive terminal. However, it is cumbersome to adapt the card edge connector to the high-frequency environment by controlling the relationship between the width and thickness of the conductive terminals. the

Therefore, it is desired to design a new type of card edge connector to improve the above problems. the

【Content of utility model】

The technical problem to be solved by the utility model is to provide a card edge connector, the length of the holding part of the card edge connector is greater than 0.45 mm and less than 1 mm. the

In order to solve the above problems, the utility model card edge connector adopts the following technical solution: a card edge connector for connecting an electronic card and a circuit board, the card edge connector includes a base and a first row of terminals, the front end of the base The surface is provided with an electronic card slot and the first side wall and the second side wall located on the upper and lower sides of the electronic card slot, and the electronic card slot is provided with a key button connecting the first and second side walls. The first side wall has a circuit board mounting surface, and each first row of terminals includes a holding portion with a first end, an electronic card contact arm extending from one side of the first end of the holding portion into the electronic card slot, and a self-holding The other side of the first end of the part extends out of the circuit board connection part of the base, the holding part is fixed on the first side wall and extends in the same direction as the contact arm of the electronic card, the length of the holding part of the first row of terminals is greater than 0.45 mm and less than 1 mm. the

In order to solve the above problems, the card edge connector of the present invention further adopts the following technical solution: the length of the holding part of the first row of terminals is not greater than 0.5 times the length of the contact arm of the electronic card. the

In order to solve the above problems, the card edge connector of the utility model further adopts the following technical solution: the holding part has a first end, the inner side of the first end is against the front end surface of the first side wall, and the holding part Barbs are provided, and the barbs are interferingly fixed on the first side wall. the

In order to solve the above problems, the card edge connector of the utility model further adopts the following technical solution: the electrical connector also includes a second row of terminals, and the second row of terminals includes a holding part and an electronic card contact arm extending from one end of the holding part and the circuit board connecting portion extending from the other end of the holding portion to the base, and the electronic card contact arm protrudes from the second side wall to the electronic card slot. the

In order to solve the above problems, the card edge connector of the utility model further adopts the following technical solution: the electronic card contact arms of the first row of terminals and the electronic card contact arms of the second row of terminals are arranged front and back, and are staggered in the left and right directions; The circuit board connection part of the first row of terminals extends out of the front end surface of the base, and the circuit board connection part of the second row of terminals extends out of the rear end surface of the base; A guide part, the guide part is located in front of the free end part of the electronic card contact arm of the second row of terminals. the

In order to solve the above problems, the card edge connector of the present invention further adopts the following technical solution: the first side wall and the second side wall are connected by end walls along their left and right ends, and the end walls have steps arranged in a step shape The step part includes a first vertical surface and a second vertical surface, the second side wall protrudes forward from the first step surface, and the second vertical surface protrudes forward from the second side wall and shrinks inward. on the first side wall. the

In order to solve the above problems, the card edge connector of the present invention further adopts the following technical solution: at the step portion of the end wall, the second side wall shrinks inwardly on the inner surface of the end wall so that the second side wall and the end wall are perpendicular to each other. The projections in the direction do not coincide. the

In order to solve the above problems, the card edge connector of the present utility model further adopts the following technical scheme: the card edge connector is further provided with a welding part, and the welding part includes a holding part held on the base and a part extending from one side of the holding part and welded On the soldering part of the circuit board, the holding part is provided with a barb located in front of the soldering part on a side close to the soldering part, and the barb is placed in the base part in interference. the

In order to solve the above problems, the card edge connector of the utility model further adopts the following technical scheme: the area of the holding part of the welding part is larger than the area of the holding part of the first row of terminals, and the area of the welding part of the welding part is larger than that of the first row of terminal welding parts area. the

In order to solve the above problems, the card edge connector of the present invention further adopts the following technical solution: the position of the first side wall corresponding to the key button is provided with a horizontal I-shaped part penetrating through the front end surface of the first side wall. the

Compared with the prior art, the utility model has the following beneficial effects: Since other parameters of the first row of terminals do not change, only the length of the holding part is changed to be greater than 0.45 millimeters and less than 1 millimeter, reducing the first row of terminals. Capacitance increases the reactance of the first row of terminals, thereby increasing the electrical performance of the card edge connector, which is beneficial for the card edge connector to adapt to the high frequency environment. the

[Description of drawings]

Fig. 1 is a perspective view of the utility model card edge connector;

Fig. 2 is a partial three-dimensional exploded view of the card edge connector shown in Fig. 1;

Fig. 3 is a perspective view of another angle of the card edge connector shown in Fig. 2;

Figure 4 is a sectional view of the card edge connector shown in Figure 1;

FIG. 5 is a perspective view of another angle of the card edge connector shown in FIG. 1 . the

【Detailed ways】

Please refer to FIG. 1 and FIG. 2 , the card edge connector 100 of the present invention mainly includes an insulating body 1 , conductive terminals 2 and welding parts 3 held on the insulating body. the

Please refer to Fig. 2 and Fig. 3, described insulative body 1 has the base portion 10 that is arranged vertically, and the front end face of described base portion 10 is provided with electronic card slot 101, and is positioned at the first, the second side of electronic card slot 101 upper and lower sides. Two side walls 11, 12 and an end wall 14 connecting the first side wall and the second side wall, the first side wall has a circuit board mounting surface. The electronic card slot 101 is provided with a button 13 to prevent the insertion of an unmatched electronic card. the

The first side wall 11 is designed to pass through the I-shaped portion 111 on the front end of the first side wall 11 at the position corresponding to the key button 13 . The I-shaped portion 111 is designed to absorb the amount of plastic deformation of the insulating body when it is heated during welding, so as to facilitate adjustment of the flatness of the card edge connector 100 . The front end of the second side wall 12 is located behind the front end of the first side wall 11, and the front end of the second side wall 12 is provided with a guide portion 121 inclined to face the electronic card slot 101 (see FIG. 4 ), so that the electronic card can be inserted at an angle. the

The end wall 14 has a stepped portion, and the stepped portion includes a first vertical surface 141 and a second vertical surface 142 . The first vertical surface 141 protrudes from the front end of the second side wall 12 and shrinks inward from the front end of the first side wall 11 , and the second vertical face 142 shrinks inward from the front end of the second side wall 12 . At the stepped portion of the end wall 14 , the second side wall 12 shrinks inwardly from the inner surface of the end wall 14 so that the vertical projections of the second side wall 12 and the end wall 14 do not overlap. The front end of the end wall 14 is concavely provided with an inclined surface 143 toward the electronic card slot 101 to prevent the electronic card from scratching the end wall 14 when the electronic card is inserted obliquely and pressed down to a horizontal state. the

Referring to FIG. 4 , the conductive terminals 2 include a first row of terminals 21 and a second row of terminals 22 . The first row of terminals 21 is assembled to the insulating housing 1 from the front end of the base 10 . The first row of terminals 21 includes a holding portion 211 held on the first side wall 11, the holding portion 211 has a first end 214, and the first end 214 abuts against the front end of the base 10. The holding part 211 is provided with an electronic card contact arm 212 extending into the electronic card slot 101 from one side of the first end 214, and a circuit board connecting part extending out of the front end of the base 10 is provided on the other side of the first end 214. 213. The holding portion 211 is provided with a barb 215 on a side close to the contact arm 212 of the electronic card. The length A of the holding portion 211 is greater than 0.45 mm and less than 1 mm, and the length A of the holding portion 211 is not greater than 0.5 times the length B of the contact arm of the electronic card. the

The second row of terminals 22 is assembled to the insulating housing 1 from the rear end surface of the base 10 . The second row of terminals 22 includes a holding portion fixed on the second sidewall 12 , the holding portion has a first end, and the first end leans against the rear end surface of the base portion 10 . The holding portion has an electronic card contact arm extending from one side of the first end into the electronic card slot 101 and a circuit board connecting portion extending from the other side of the first end out of the rear end surface of the base portion 10 . The electronic card contact arms 212 of the first row of terminals 21 and the electronic card contact arms of the second row of terminals 22 are arranged front and back, and are staggered in the left and right directions. The free end of the electronic card contact arm of the second row of terminals 22 is located behind the guide portion 121 of the second side wall 12 . In this embodiment, the size and overall size of each structure of the second row of terminals 22 are larger than the size and overall size of each structure of the first row of terminals 21 . the

The welding part 3 is assembled to the end wall 14 of the card edge connector forwardly from the rear end of the base 10 . The welding member 3 includes a holding portion 31 fixed on the end wall 14 and a welding portion 32 extending backward from a lower side of the holding portion 31 to a rear end surface of the base portion 10 . The holding portion 31 is provided with a barb 33 located in front of the welding portion 32 on a side close to the welding portion 32 , and the barb 33 interferes and holds the base portion 10 . The surface area of the holding portion 31 of the welding piece 3 is greater than the surface area of the holding portion of the first and second rows of terminals, and the welding area of the welding portion 32 of the welding piece 32 is larger than the welding area of the welding portion of the first and second rows of terminals. big. In this way, the problem that the strength of the card edge connector is not high when the card edge connector is welded to the circuit board is solved by making the terminal relatively small in order to satisfy the miniaturization of the card edge connector. the

The length A of the holding portion 211 of the first row of terminals 21 is greater than 0.45 mm and less than 1 mm, and the length A of the holding portion 211 is not greater than 0.5 times the length B of the electronic card contact arm 212 . When the holding force of the first row of terminals 21 in the insulating housing 1 is satisfied, the length of the holding portion 211 of the first row of terminals 21 is made relatively small, which is beneficial to miniaturization of the card edge connector. At the same time, because other parameters of the first row of terminals 21 do not change, only changing the length of the holding portion 211 can reduce the capacitance of the first row of terminals 21, thereby increasing the reactance of the first row of terminals, thereby increasing the electrical performance of the card edge connector , which is beneficial for the card edge connector to adapt to the high frequency environment. the

This embodiment is a preferred embodiment of the utility model, and of course, the utility model can also adopt other implementation modes, which will not be repeated here. the

Claims (10)

1. a bayonet connector, for connecting electronic card and circuit board, this bayonet connector comprises base portion and first row terminal, described base portion is provided with the electronic cards slot that runs through front end face and is positioned at the first side wall and second sidewall of electronic cards slot both sides, described electronic cards slot is provided with and connects first, the knob of key of the second sidewall, described the first side wall has the circuit board installed surface, each first row terminal comprises the holding parts with first end, extend into the electronic cards contact arm of electronic cards slot and extend the circuit board connecting portion of base portion from the opposite side of the first end of holding parts from a side of the first end of holding parts, holding parts is immobilizated in the first side wall and extends in the same way with the electronic cards contact arm, it is characterized in that: the length of the holding parts of first row terminal is greater than 0.45 millimeter and be less than 1 millimeter.

2. bayonet connector as claimed in claim 1, it is characterized in that: the length of the holding parts of described first row terminal is not more than 0.5 times of electronic cards contact arm length.

3. bayonet connector as claimed in claim 2, it is characterized in that: described holding parts has first end, and the inboard of described first end is resisted against the front end face of the first side wall, and described holding parts is provided with hangnail, and described hangnail is interfered and is fixed in the first side wall.

4. bayonet connector as claimed in claim 3, it is characterized in that: described electric connector also comprises the second row terminal, described second row terminal comprises holding parts, the electronic cards contact arm extended from holding parts one end and the circuit board connecting portion that extends base portion from the holding parts other end, and described electronic cards contact arm protrudes into the electronic cards slot from the second sidewall.

5. bayonet connector as claimed in claim 4, is characterized in that: arrange before and after the electronic cards contact arm of described first row terminal and the electronic cards contact arm of second row terminal are, and stagger on left and right directions; The circuit board connecting portion of described first row terminal extends the base portion front end face, and the circuit board connecting portion of described second row terminal extends the base portion rear end face; The second sidewall front end is provided with and is the guidance part that inclined plane arranges to the electronic cards slot, and described guidance part is positioned at the place ahead of the electronic cards contact arm free end of second row terminal.

6. bayonet connector as claimed in claim 1, it is characterized in that: described the first side wall is connected by end wall along its two ends, left and right with the second sidewall, described end wall has the stage portion that is step-like setting, described stage portion comprises the first vertical plane and the second vertical plane, the second sidewall is than first step towards front protrusion, and the second vertical plane protrudes from forward the second sidewall and is recessed in the first side wall.

7. bayonet connector as claimed in claim 6 is characterized in that: in the stage portion of end wall, described the second sidewall be recessed in the end wall medial surface and the projection that makes the second sidewall and end wall in the vertical direction without overlapping.

8. bayonet connector as described as claim 1 or 7, it is characterized in that: described bayonet connector further is provided with weldment, described weldment comprises the holding parts that is immobilizated in base portion and the weld part that extends and be welded in circuit board from holding parts one side, described holding parts is provided with in the side near weld part the hangnail that is positioned at weld part the place ahead, and described hangnail interference is placed in base portion.

9. bayonet connector as claimed in claim 8, it is characterized in that: the area of the holding parts of described weldment is greater than the area of first row terminal fixing section, and the area of weldment weld part is greater than the area of first row terminal soldering section.

10. bayonet connector as claimed in claim 1, it is characterized in that: described the first side wall corresponding keys button position is provided with the horizontal I-shaped section of the front end face that runs through the first side wall.

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