CN2800535Y - Card edge electric connector with heat radiation structure - Google Patents

Abstract

A card edge electrical connector with a heat dissipation structure, which can be arranged on a circuit board for insertion of an electronic card, which includes an insulating body and a plurality of conductive terminals, wherein the insulating body has a base, and the base includes opposite side walls and The central slot for receiving the insertion end of the electronic card is formed between the two side walls. There are a number of terminal receiving grooves in the side walls. Several conductive terminals are stored in the corresponding terminal receiving grooves of the insulating body. The side wall of the base is close to the lower surface of the base. There is at least one row of passages in the position, with this structure, the heat dissipation area can be increased more effectively, which is conducive to air convection, which is more in line with the scientific nature of air flow, so that the heat inside the card edge electrical connector can be timely And fast dissipation, to avoid heat accumulation and damage to the insulation body.

Description

Card edge electrical connector with heat dissipation structure

【Technical field】

The utility model relates to a card edge electrical connector with a heat dissipation structure, in particular to an improvement of the insulating body structure of the card edge electrical connector.

【Background technique】

Card edge electrical connectors are widely used in personal computers and other electronic devices. They are assembled on circuit boards and can be inserted into various electronic cards to achieve electrical conduction between electronic cards and circuit boards. For existing card edge electrical connectors, please refer to U.S. Patent Nos. 5,059,133, 6,210,195, 5,672,069 and Chinese Utility Model Patent No. CN 2638267Y. The butt joint face is recessed downward to form a slot for inserting an electronic card of a specific specification. The two side walls of the insulating body on both sides of the slot are provided with a plurality of terminal accommodating grooves for accommodating conductive terminals. In application, the plug-in end of the electronic card is accommodated in the slot of the card edge connector, and electrical conduction is achieved between the electronic card and the card edge connector through the joint of the conductive terminal and the conductive part of the electronic card.

However, with the rapid development of information technology, the requirements for data transmission volume are also increasing, resulting in an increase in the number of terminals. However, due to the limitation of installation space, the size of the card edge connector cannot be increased correspondingly, so the distance between the terminals must be reduced, which leads to the tighter arrangement of the terminals in the card edge connector. When a large current is required in the working process, the temperature of the terminal using the card edge connector is relatively high during signal transmission. Therefore, the heat dissipation problem inside the card edge connector with closely arranged terminals is particularly important. The heat in the card edge connector described in the aforementioned US patent is dissipated to the outside through the terminal receiving groove provided on the side wall of the insulating body. These terminal accommodating grooves pass through the upper and lower surfaces of the side walls, and are provided with openings on the inner surfaces of the side walls. However, these card edge connectors are installed on the circuit board in use, so that the opening on the bottom of the side wall of the terminal receiving groove is closed; and the electronic card is accommodated in the slot, causing the terminal receiving groove to be on the inner surface of the side wall The opening is closed by the electronic card. Therefore, when the card edge connector is in operation, the effective heat dissipation area of the internal heat is mainly the opening of the terminal receiving groove at the top of the side wall. These narrow heat dissipation areas cannot quickly dissipate the heat inside the card edge connector; and the aforementioned Chinese patent Although a structure is provided to increase the heat dissipation area of the plastic body to dissipate the heat in the card edge connector in time, the channel is only opened on the top or upper part of the side wall, because the bottom is closed during use, resulting in the terminal receiving The air in the tank has poor convection up and down, and its heat dissipation effect is also not very ideal.

Therefore, it is necessary to improve the existing card edge electrical connector to overcome the above-mentioned defects in the prior art.

【Content of utility model】

The purpose of the utility model is to provide a card edge electrical connector with heat dissipation structure.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a card edge electrical connector with a heat dissipation structure, which can be set on a circuit board for plugging in an electronic card, which includes an insulating body and a number of conductive terminals. The body has a base. The base includes opposite side walls and a central slot formed between the two side walls for receiving the insertion end of the electronic card. A number of terminal receiving grooves are provided in the side walls, and a number of conductive terminals are accommodated in corresponding In the terminal receiving groove, it includes a contact portion that can be in electrical contact with the insertion end of the electronic card and a tail portion extending from the contact portion that can be electrically connected to the circuit board. There is at least one A row of passages, the passages communicate with the terminal receiving groove and penetrate to the outer surface of the side wall.

Compared with the prior art, the utility model has the following beneficial effects: the upper and lower parts of the side wall of the insulating body are provided with passages connecting the inside of the terminal receiving groove with the outside world, which can increase the heat dissipation area more effectively , and because there are openings on the upper and lower parts of the side wall of the insulating body, it is conducive to air convection, which is more in line with the scientific nature of air flow, so that the heat inside the card edge electrical connector can be dissipated in time and quickly, avoiding heat Accumulate and cause damage to the insulation body.

【Description of drawings】

FIG. 1 is a three-dimensional exploded view of the card edge electrical connector with heat dissipation structure of the present invention.

2 is a perspective view of the card edge electrical connector with heat dissipation structure of the present invention.

3 is a perspective view of the insulation body of the card edge electrical connector with heat dissipation structure of the present invention.

Fig. 4 is a sectional view taken along line A-A in Fig. 3 .

【Detailed ways】

Please refer to FIG. 1 and FIG. 2, the card edge electrical connector 100 with heat dissipation structure of the present invention is arranged on a circuit board (not shown) for insertion of an electronic card 5, which includes an insulating body 1, accommodated in A plurality of conductive terminals 2 in the insulating body 1 , a pair of locking mechanisms 3 and a plurality of board lock components 4 .

The electronic card 5 includes a pair of notches 51 formed obliquely downward on both sides of the upper portion thereof, an insertion end 52 is formed at the bottom thereof, and a notch 53 is formed on the insertion end 52 further upward. Please refer to FIG. 3 , the insulating housing 1 includes a base portion 10 extending lengthwise and a pair of mounting portions 14 disposed at both ends of the base portion 10 . The base 10 includes opposite longitudinal sidewalls 13 and a narrow central slot 15 formed between the two sidewalls 13 . The central slot 15 is divided into two parts by the transverse rib 16 disposed on the inner surface 131 of the two sidewalls 13 for receiving the insertion end 52 of the electronic card 5 . Each sidewall 13 further includes an upper surface 11 , a lower surface 12 and an outer surface 132 .

Please refer to FIG. 4 , there are a plurality of terminal receiving grooves 19 arranged in the side wall 13 along its longitudinal axis and vertically penetrating through its upper and lower surfaces 11 , 12 . Each terminal receiving groove 19 is further provided with an opening 18 communicating with the central slot 15 on the inner surface 131 of the side wall 13. On the top of the side wall 13, there are several openings that pass through the outer surface 132 and communicate with the terminal receiving groove 19. The channel 17a is also provided with a plurality of channels 17b passing through the outer surface 132 of the side wall 13 near the lower surface 12 thereof and communicating with the terminal receiving groove 19 .

Each mounting portion 14 includes a pair of abutments 144 symmetrically distributed in the relative longitudinal direction, a connecting plate 145 connecting the bottoms of the two abutments 144, forming a vertical arrangement between the two abutments 144 and the connecting plate 145. The accommodation chamber 141. On the inner surface of the side wall 146 of each abutment 144, there is a long "U"-shaped slot 142 with an opening at its top along the vertical direction, and a step 147 is provided in the slot 142, and a step 147 is arranged in the "U" The end of the slot 142 is provided with a through hole 143 passing through the inner and outer surfaces 148 , 149 and communicating with the “U” slot 142 .

A plurality of conductive terminals 2 are accommodated in corresponding terminal receiving grooves 19 of the insulating body 1, which include a holding portion 22 fixed in the receiving groove 19, extending upwards from the holding portion 22 and further protruding from the inner surface 131 of the side wall 13. The opening 18 enters the contact portion 21 in the central slot 15 and the tail portion 23 extends downward from the holding portion 22 to the lower surface 12 of the side wall 13 and can be soldered to the circuit board to achieve electrical conduction. When the electronic card 5 is inserted into the central slot 15, the conductive parts (not shown) arranged on both sides of the insertion end 52 along the longitudinal axis are in electrical contact with the contact parts 21 of the corresponding conductive terminals 2, and the conductive parts of the conductive terminals 2 The tail portion 23 is electrically connected to the circuit board, so as to achieve electrical conduction between the electronic card 5 and the circuit board.

The buckle mechanism 3 is accommodated in the housing cavity 141 of the mounting portion 14, and each buckle mechanism 3 includes a vertically extending elongated main body portion 31 and is formed on the top of the main body portion 31 and extends obliquely toward the other buckle mechanism 3. The inclined arm 32, the side wall 36 of the main body 31 is also provided with a step 33 that matches the step 147 in the slot 142, and the main body 31 protrudes from the bottom of the inner wall 34 opposite to the other buckle mechanism 3 to form a top. A pair of pivots 37 and a plurality of wedge-shaped stops 38 protrude from opposite sidewalls 36 of the outlet portion 35 . When the buckle mechanism 3 is assembled into the receiving cavity 141, it slides along the "U"-shaped slot 142 to the bottom of the slot 142, and the pivot 37 is accommodated in the corresponding through hole 143. Through this structure, the buckle mechanism 3 can rotate around The pivot 37 rotates to a certain degree. The stopper 38 is in interference fit with the side wall 146 of the base 144 to provide a certain degree of holding, so as to prevent the locking mechanism 3 from detaching from the receiving cavity 141 when it is transported, shaken or otherwise subjected to a small external force. The free end of the inclined arm 32 is a transverse clamping part. When the electronic card 5 is inserted into the central slot 15 of the insulating body 1, the clamping part is engaged with the notch 51 of the electronic card 5, thereby ensuring that the electronic card 5 is firmly accommodated in the card edge electrical connector 100. When the electronic card 5 needs to be withdrawn, the buckle mechanism 3 rotates outwards by a relatively large external force so that the holding part breaks away from the notch 51. The bottom edge makes the insertion end 52 disengage from the contact portion 21 of the terminal 2, and then the electronic card can be easily taken out.

The board lock member 4 is assembled at the bottom of the base 144 of the installation part 14, and each board lock member 4 includes a fixed part 41 fixedly arranged in the base 144 and extends from the bottom of the fixed part 41 to be connected to the circuit board. Corresponding holes (not shown) match the buckling portion 42 . The card edge electrical connector 100 can be reliably fixed on the circuit board through the corresponding cooperation of the fixing part 41 and the buckling part 42 with the mounting part 14 and the circuit board. In addition, the inner wall of the corresponding hole on the circuit board for the insertion of the board lock member 4 is usually coated with a metal coating, and an effective grounding can be established between the board lock member 4 and the metal coating through the electrical contact between the board lock member 4 and the metal coating. path.

In the present invention, channels 17a and 17b are provided on the top and bottom of the side wall 13 of the insulating body 1 of the card edge electrical connector 100 with a heat dissipation structure to communicate the interior of the terminal receiving groove 19 with the outside world, so that the heat dissipation area It can be increased more effectively, and because openings are provided on the upper and lower parts of the side wall 13 of the insulating body 1, it is conducive to the convection of the air, which is more in line with the scientific nature of the air flow, so that the inside of the card edge electrical connector 100 The heat is dissipated in a timely and rapid manner, so as to avoid heat accumulation and damage to the insulating body 1 .

What is described in this specification is only one embodiment of the present utility model. In other embodiments, multiple rows of through holes 17b can also be set near the lower surface 12 of the insulating body to further speed up the heat dissipation, and even the upper and lower positions The channels can penetrate the upper and lower surfaces 11, 12 of the side wall 13, so that the heat can be dissipated at the highest speed.

Claims (10)

1. A card edge electrical connector with a heat dissipation structure, which can be arranged on a circuit board for insertion of an electronic card, which includes an insulating body and a plurality of conductive terminals, wherein the insulating body has a base, and the base includes oppositely arranged sides The wall and the central slot formed between the two side walls are used to accommodate the insertion end of the electronic card. There are a number of terminal receiving grooves in the side walls, and a number of conductive terminals are accommodated in the corresponding terminal receiving grooves of the insulating body. The contact portion of the insertion end electrically contacts and the tail portion extending from the contact portion can be electrically connected to the circuit board, which is characterized in that: at least one row of channels is provided in the side wall of the base near the lower surface of the base, and the channel is connected to the bottom surface of the base. The terminal accommodating groove communicates with and penetrates to the outer surface of the side wall. 2. The card edge electrical connector with heat dissipation structure according to claim 1, characterized in that: in the side wall of the base, close to the upper surface of the base, there is a hole that communicates with the terminal receiving groove and runs through the outer surface of the corresponding side wall. Row channel. 3. The card edge electrical connector with heat dissipation structure as claimed in claim 2, wherein the terminals are exposed at the channel opening. 4. The card edge electrical connector with heat dissipation structure according to claim 1 or 2, characterized in that: the terminal receiving groove vertically penetrates the upper and lower surfaces of the insulating body, and is formed on the inner side of the side wall There are openings. 5. The card edge electrical connector with heat dissipation structure according to claim 1 or 2, characterized in that: said channel is composed of a number of channels corresponding to the terminal receiving grooves one by one, and on the outer surface of the side wall An opening is formed. 6. The card edge electrical connector with heat dissipation structure according to claim 4, characterized in that: the opening is arranged at the contact portion adjacent to the conductive terminal, the terminal receiving groove is connected with the central slot, and the terminal The contact portion is exposed within the central slot. 7. The card edge electrical connector with heat dissipation structure as claimed in claim 5, wherein the channels are arranged at intervals along the longitudinal direction of the insulating body. 8. The card edge electrical connector with heat dissipation structure according to claim 1 or 2, characterized in that: the insulating body further includes mounting portions arranged at opposite ends of the base, each mounting portion includes a pair of abutments, A connecting plate connecting the two abutments and an accommodating cavity between the base plate and the connecting plate. 9. The card edge electrical connector with heat dissipation structure as claimed in claim 8, characterized in that: a slot is formed on the inner surface of the side wall of each abutment, a step is arranged in the slot, and the end of the slot is The position is provided with a through hole that runs through its inner and outer surfaces and communicates with the slot, and a buckle mechanism is accommodated in the receiving cavity, which includes a main body with steps and pivots on the side wall and a slanted extension at the top of the main body. The inclined arm protrudes from the bottom of the main body to form a protruding portion. 10 . The card edge electrical connector with heat dissipation structure as claimed in claim 8 , wherein a board locking member capable of being buckled on the circuit board is arranged at the bottom of the mounting portion of the insulating housing. 11 .

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