CN201478512U - Card edge connector - Google Patents

Abstract

The utility model discloses a card edge connector, it includes insulator and accepts row's terminal and lower terminal of arranging on the fixing insulator, insulator has the inserting groove of grafting memory card, the preceding terminal surface and relative rear end face of inserting groove one side, it all includes the base member to arrange the terminal from top to bottom, the fixed part that extends from the base member, weld part and contact site, this contact site is including extending the linking arm of establishing suddenly from the main part, be connected the two-way elastic arm that extends to the slot direction with linking arm one end, the linking arm extends from main part slant, form a contained angle between its and the elastic arm, this contained angle is greater than 15 degrees and is less than 60 degrees, rotate even damage when making the terminal withdraw from along with the memory card when preventing the abnormal operation of memory card.

Description

card edge connector

Technical field

The utility model relates to an electric connector, in particular to a card edge connector electrically connected between a memory card and a motherboard.

Background technique

The card edge connector is widely used on the motherboard device, and it is used to realize the electrical connection between the memory card and the motherboard on which the card edge connector is installed, and belongs to a kind of high-precision electrical connector. For example, a card edge connector disclosed in U.S. Patent No. 5,393,234, the card edge connector has an insulating body that is inserted into a slot and a number of conductive terminals that are held in the insulating body, and the plurality of conductive terminals are held in the insulating body. The contact part is exposed to the insertion slot, and the butt end of the memory card is inserted into the insertion slot of the insulating body. The metal sheet of the memory card contacts and electrically connects the contact parts of the upper and lower terminals exposed in the insertion slot. The contact parts of the upper and lower conductive terminals Extending from the rear end of the main body to the front end. Because the memory card must be inserted into the slot of the card edge connector at an angle when inserted into the slot, the contact part of the lower row of conductive terminals is exposed in the slot and the extension direction is opposite to the insertion direction of the memory card, and the insertion force is relatively large when inserted. , when the insertion direction of the memory card deviates or the insertion force is greater, it will cause the lower row of conductive terminals to be damaged due to improper insertion force factors, which will affect the connection between the memory card and the card edge connector and the female connector. Connection effect between boards.

Please refer to the card edge connector disclosed in the U.S. No. 5,839,913 case. This card edge connector solves the defects of the above-mentioned structure when inserting a card. The bottom row of terminals is damaged when inserted, but when the memory card is withdrawn, it must be pulled out obliquely. The end of the bottom row of terminals has the greatest friction between it and the memory card. When pulling out, it is easier to drive the lower row of conductive terminals. It will be damaged when the memory card is pulled out, and the bending angle of the lower row of conductive terminals is parallel to the main body, and the distance between them is small, so the flexibility of the conductive terminals is poor.

Therefore, it is necessary to improve the current technology to address the above-mentioned defects of the conventional card edge connector.

Contents of the invention

The main purpose of the present invention is to provide a card edge connector to increase the elasticity and resistance of the conductive terminals to prevent the terminals from being easily damaged when the memory card is inserted or pulled out.

The above-mentioned purpose of the utility model and the technical solution to solve the problem are realized in the following way: the card edge connector is mainly composed of an insulating body and a plurality of upper and lower rows of terminals held by the insulating body, the insulating body has a plug-in memory card The slot, the front end surface on one side of the slot, and the opposite rear end surface. The lower row of terminals includes a base body, a fixing portion extending from the base body, a welding portion, and a contact portion. The contact portion includes an oblique arm extending from the base body, and One end of the oblique arm is connected to a two-way elastic arm extending toward the direction of the slot and extending toward the rear end surface. The oblique arm extends obliquely from the base and forms an angle with the elastic arm. The angle is greater than 15 degrees and less than 60 degrees. In order to prevent the terminal from rotating or even being damaged when the memory card is operated abnormally.

From the above, it can be known that the card edge connector of the present invention reduces the force between the memory card and the contact portion of the terminal by improving the terminal structure, and increases the elastic recovery force and resistance of the terminal, so as to prevent the terminal from being damaged during abnormal operation of the memory card.

Description of drawings

Figure 1 is a perspective view of the card edge connector of the present invention;

Figure 2 is an exploded view of the card edge connector of the present invention;

Fig. 3 is a sectional view of the card edge connector of the present invention along the direction A-A shown in Fig. 1;

Fig. 4 is a cross-sectional view of the card edge connector of the present invention along the B-B direction shown in Fig. 1;

5 is a cross-sectional view of the card edge connector of the present invention when the memory card is inserted or pulled out.

Utility model:

70-card edge connector, 30-insulating body, 31-main body, 32-socket slot, 33-front face, 34-rear face, 35, 36-terminal slot, 40-upper terminal, 41, 51-substrate , 42-first holding part, 421, 521-barb, 43-first welding part, 44-first contact part, 441-first spring arm, 442-first contact, 50-lower terminal, 52 - second holding part, 522 - limit part, 53 - second welding part, 54 - second contact part, 540 - oblique arm, 541 - second elastic arm, 542 - curved part, 543 - third elastic arm, 544-second contact, 545-end, 60-clasp arm, 80-memory card.

Detailed ways

Please refer to FIG. 1 and FIG. 2 , which are a specific embodiment of a card edge connector of the present invention. The card edge connector 70 is composed of an insulating body 30 , a plurality of upper row terminals 40 , and a plurality of rear and lower row terminals 50 .

The insulating body 30 is in the shape of a vertical cuboid, and is provided with a main body 31 , and two sides of the main body 31 are provided with buckle arms 60 for fixing the memory card. The center of the main body 31 is provided with a longitudinal insertion slot 32 for inserting a memory card. The main body 31 has a front end surface 33 at one end of the insertion slot 32, a rear end surface 34 opposite to the front end surface 33, and the card edge is connected. The device is mounted on the mounting surface of the circuit board. Please refer to FIG. 3 and FIG. 4, the upper and lower walls of the socket slot 32 face the installation surface of the main body 31 and respectively pass through multiple terminal slots 35, 36 with a plurality of upper row terminals 40 and lower row terminals 50. The terminal slot 35 , 36 run through the corresponding front end surface 33 and rear end surface 34 respectively.

As shown in FIG. 3 , several upper row terminals 40 are stamped from thin metal sheets, which are assembled and held in the terminal groove 35 of the main body 31 by the front end surface 33 of the insulating body 30 . The upper row terminals 40 have a vertical base 41 , A first holding portion 42 , a first welding portion 43 and a first contact portion 44 protrude from the base 41 . The first holding portion 42 has barbs 421 interfering with the inner wall of the terminal groove 35 to fix the upper row of terminals 40 in the main body 31 . The side of the first soldering portion 43 extends from the bottom edge of the base body 41 to the front surface 33 of the main body 31 and can be soldered to the circuit board to realize electrical connection. The side of the first contact portion 44 is bent upwards from the top edge of the base body 41 and extends forward to form a first elastic arm 441 . The protrusion is provided with a first contact 442 to realize electrical connection with the metal sheet inserted into the memory card.

As shown in FIG. 4 , several lower-row terminals 50 are also punched and formed from thin metal sheets. The lower-row terminals 50 are assembled from the rear end surface 34 of the insulating body and held in the terminal slots 36 of the main body 31 . The lower-row terminals 50 have a base body 51 , the second holding portion 52 protruding from the base 51 , the second welding portion 53 and the second contact portion 54 . The second holding part 52 has a barb 521 that interferes with the inner wall of the terminal groove 36 to fix the lower row of terminals 50 in the main body 31. On the second holding part 52, there is a stopper 522 for forward assembly. The limiting portion 522 abuts against the end surface of the terminal slot 36 to prevent the bottom row of terminals from being too deep and positioned when assembled. The second soldering portion 53 extends from the bottom end of the base body 51 to the rear end surface 34 of the main body 31 and can be soldered to the circuit board for electrical connection. The side of the second contact portion 54 bends obliquely upward from the middle end of the base body 51 and then extends forward. The second elastic arm 541 and the third elastic arm 543 connected with the second elastic arm 541, and the middle section of the second elastic arm 541 is provided with a section of curved portion 542, the curved portion 542 is to enhance the elastic effect of the second elastic arm 541, its The third elastic arm 543 is bent upward from the end of the second elastic arm 541 and extends toward the rear end surface 34. The second elastic arm 541 and the third elastic arm 543 form a two-way elastic arm to form a good elastic recovery effect, while The angle formed between the oblique arm 540 and the second elastic arm 541 is greater than 15 degrees but less than 60 degrees, so that the second contact portion 54 maintains a certain degree of elasticity after being stressed but is not easy to break. A second contact 544 extending into the socket 32 protrudes from the top of the third elastic arm 543 , and the third elastic arm 543 also has an end 545 . The slanted arm 540 protrudes obliquely toward the rear end surface 34 of the main body 31 but does not exceed the rear end surface 34 of the main body 31 , and the second contact 544 protrudes bare into the insertion groove 32 , and is connected with the first contact 442 respectively. Insert the memory card into the slot 32 and contact the upper and lower metal sheets to realize the electrical connection between the memory card, the card edge connector and the motherboard.

As shown in Figure 5, when the memory card 80 has a conductive sheet metal body end obliquely inserted into the insertion slot 32 or pulled out, it can be smoothly inserted into the insertion slot 32 under the lead angle of the insertion slot 32, and exposed on the insertion slot. The first contact 442 and the second contact 544 in the socket 32 are respectively in contact with the metal body of the memory card 80 . The memory card 80 is inserted obliquely and pressed downwards, and its force-bearing point A receives the greatest force. This force-bearing point A is bidirectionally supported by the support point B1 of the third elastic arm 544 and the support point B2 of the second elastic arm 541, and is stressed. Point A is located between support point B1 and support point B2, and has strong lining support. At the same time, an included angle is formed between the third elastic arm 543 and the second elastic arm 541, and the included angle is greater than 2 degrees and less than 20 degrees, and an angle greater than 15 degrees and less than 60 degrees is formed between the second elastic arm 541 and the oblique arm 540. degree, so that the contact part 54 maintains a certain degree of elasticity and is not easy to break after being stressed. The second contact portion 54 may be broken or cannot return to its original position. The structure of the card edge connector of the utility model controls the terminal damage of the lower row of terminals 50 during abnormal operation to a certain extent.

The key point of this utility model is to form a certain range of angles between the extension of the lower row of terminals 50 of the card edge connector 70 and the two-way elastic arm, so that the second contact portion 54 has a certain degree of elasticity, and the second contact portion 54 It has a two-way elastic arm with strong elastic recovery and resistance to prevent damage to the terminal during abnormal operation.

What is described above is only the preferred embodiment of the present utility model, can not only limit the scope of implementation of the present utility model with this, and the utility model also has other variation implementation modes, so all those who are familiar with this technology will not Implementations in other styles departing from the spirit of the utility model in this case shall be regarded as equivalent implementations within the scope of the patent application in this case.

Claims (6)

1. A card edge connector, which is composed of an insulating body and a plurality of upper row terminals and lower row ends in the holding insulating body. The lower row of terminals includes a base body, a fixing portion extending from the base body, a welding portion and a contact portion. The contact portion includes an oblique arm extending from the base body, and is characterized in that an elastic arm is connected to one end of the oblique arm. The elastic arm is a two-way elastic structure. The oblique arm extends obliquely from the base, and forms an included angle with the elastic arm. The angle is greater than 15 degrees and less than 60 degrees, so as to prevent the terminal from rotating or even being damaged when the memory card is abnormally operated. . 2 . The card edge connector according to claim 1 , wherein the two-way elastic arm is formed by an oblique arm extending toward the slot and being bent toward the rear end surface. 3 . 3. The card edge connector according to claim 1, wherein the two-way elastic arm of the contact portion includes a second elastic arm bent and extended from the oblique arm and a second elastic arm bent from the end of the second elastic arm. Three arms. 4. The card edge connector as claimed in claim 3, wherein the second elastic arm is provided with a curved portion to increase elasticity. 5 . The card edge connector as claimed in claim 3 , wherein an included angle is formed between the second elastic arm and the third elastic arm, and the included angle is greater than 2 degrees and less than 20 degrees. 6. The card edge connector according to claim 3, wherein a third contact point is provided on the top of the third elastic arm, and the stress point of the third contact point is located between the supporting point of the third elastic arm and between the support points of the second spring arm.

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