CN2264428Y - Circuit Board Retainer for Low Profile Card Edge Connectors - Google Patents

Abstract

A low-configuration card edge connector circuit board fixing device is formed by bending a flexible board body, an outward bending cambered surface is arranged on the upper edge of the flexible board body, clamping walls for clamping a circuit board are arranged on two sides of the downward bending cambered surface, a clamping channel formed by the clamping walls is fixed with an insulating shell of a connector, the lower edge of the flexible board body is connected with the side edge of the low-configuration card edge connector, the upper edge of the circuit board is clamped from three clamping positions of the clamping walls and the clamping channel, the upper edge, the lower edge and the left side and the right side of the circuit board are effectively clamped, vibration or impact can be resisted, and the circuit board is prevented from shifting or being powered off instantly.

Description

Circuit Board Retainer for Low Profile Card Edge Connectors

The utility model relates to a circuit board fixing device of a low-profile card edge connector. The device is arranged on the connector to fix the inserted circuit board in the axial direction, so as to avoid displacement or instantaneous power failure caused by vibration. .

The early low-profile card edge connectors did not have a design for clamping the circuit board on both sides, and only relied on the terminal clamping of the connector. Since the position of the terminal clamping the circuit board is located at the lower end of the entire circuit board, there is no problem with clamping. , but in fact the stability of the clamping is poor, because the terminal is clamped from the radial direction (front and rear), and there is no abutment or holding in the axial direction (left and right). Therefore, in actual use, if there is vibration or impact during use, it is easy to cause the axial (left and right) displacement of the circuit board, causing deviations in the contact between the circuit board and the terminals on the connector, resulting in instantaneous power failure.

Therefore, a fixture for further holding the circuit board has been developed to address this defect. Figures 1A and 1B show the device of the No. 82206344 Taiwan patent application. The fixer 10 disclosed in the device is arranged on both sides of the circuit board slot 110 of the connector 1, and it mainly includes a base 101 and is connected with the base 101. The clamping clip 102 has two elastic curved arms 103, 104, which can clamp the circuit board inserted between the clamping clips. The arrangement of the fixture 10 can clamp the circuit board, but in fact, such clamping cannot completely avoid displacement or instantaneous power failure of the circuit board due to vibration or impact in the workplace. The reason is that the position where the fixture 10 clamps the circuit board is almost on the same plane as the position where the terminal clamps the circuit board, that is, the position where the circuit board is clamped is located at the lower end, which occupies a small part of the entire circuit board area, so when vibrating or impacting , The circuit board can easily break away from the clamping of the lower end by the displacement force generated by itself, resulting in displacement or instantaneous power failure.

The purpose of this utility model is to provide a low configuration card edge connector circuit board fixing device, the fixing device clamps the circuit board on the upper edge at a long distance from the upper terminal of the connector, and in the axial direction (left and right) Press the circuit board so that the circuit board, the lower edge, and the left and right sides are effectively clamped respectively, resisting external vibration or impact, and avoiding instantaneous power failure.

The purpose of this utility model is achieved by providing a circuit board fixing device of a low-profile card edge connector. The fixing device is formed by bending a flexible board, and its upper edge has an outer curved surface. There are clamping walls for clamping the circuit board on both sides along the arc surface, the clamping channels in the clamping walls are connected with the insulating housing of the connector, and the clamping walls and clamping channels clamp the upper edge of the circuit board from three directions.

The advantage of the device of the present invention is that, since the device uses a flexible plate body to clamp the circuit board on the upper edge of the left and right ends of the circuit board, the stability of clamping is improved, the resistance of the circuit board to external vibration and impact is enhanced, and instantaneous disconnection is avoided. electric capacity. In addition, the flexible plate body of the utility model is ingeniously designed, easy to process and produce, and has low production cost.

Below in conjunction with accompanying drawing, describe embodiment of the present utility model, wherein:

FIG. 1A is a plan view of a conventional card edge connector fixing device;

FIG. 1B is a perspective view of a conventional card edge connector fixing device disposed on the connector;

Fig. 2 is a perspective view of the circuit board fixing device of the low profile card edge connector of the present invention;

Fig. 3A is a front view of the fixing device of the present invention arranged on both sides of the insulating housing of the card edge connector and inserted into the circuit board;

Fig. 3B is a cross-sectional view of the fixing device of the present invention arranged on both sides of the insulating housing of the card edge connector and inserted into the circuit board;

Fig. 4A is a perspective view of another embodiment of the fixing device of the present invention;

Fig. 4B is a front view of another embodiment of the fixing device of the present invention disposed on the insulating casing and inserted into the circuit board.

As shown in Figure 2, the fixing device 2 of the present invention is formed by bending a flexible plate body 20, that is, an outer curved arc surface 201 is bent on the upper edge of the flexible plate body to guide the insertion of the circuit board; along the arc surface 201 Clamping walls 202 , 203 are formed downward on both sides, and the two clamping walls 202 , 203 maintain a proper distance, which can clamp circuit boards of different thicknesses. In this embodiment, the two clamping walls 202 and 203 are sheet-shaped, directly formed on both sides of the insulating housing, and their upper ends cooperate with the curved surface 201 to expand outward, and are also used to guide the insertion of the circuit board. A prong 204 is formed under the clamping channel 205 formed by the clamping walls 202 and 203 , and the two sides of the prong 204 have barbs 2041 for preventing the flexible board from falling out during assembly and insertion. As shown in Figures 3A and 3B, the flexible plate body of the fixing device 2 of the present invention is inserted and fixed on the insulating housing 30 of the low-profile card edge connector 3 through its pins 204, so that the height of both sides of the connector 3 is increased . Once the circuit board 4 is inserted, the circuit board 4 can be easily inserted through the curved surface 201 of the flexible board body and the curved surfaces of the upper edges of the clamping walls 202, 203. After the insertion and positioning, the bottom edge of the circuit board 4 is fixed by the connector 3 terminal clamping (not shown in the figure), the top is clamped by the flexible board of the present utility model. Referring to Fig. 3B again, it can be clearly seen from the figure that the circuit board 4 is clamped from three azimuths, that is, two clamping walls 202, 203 and a clamping channel 205, wherein the two clamping channels 202, 203 are clamped from the front and rear orientations, and the The clamping channel 205 clamps the circuit board 4 from the left and right lateral directions by the elasticity of the flexible board itself, so the circuit board 4 is effectively and firmly clamped in the three directions formed by the clamping walls 202, 203 and the clamping channel 205 .

4A and 4B show a perspective view and a front view of another embodiment of the fixing device of the present invention. In this embodiment, the curved surface 201', the clamping walls 202', 203' and the pins 204' are also bent integrally through the flexible board. It is worth mentioning that the clamping walls 202', 203' are not sheet-shaped, but It is to directly punch the flexible board body, punch its abdomen, and bulge out the clamping walls 202', 203' from both sides. This structure basically has the same effect as the previous embodiment. As can be seen from Figure 4B, the circuit board 4' is likewise firmly clamped.

The above flexible body can be an independent component, and can be made of metal material.

In addition to the above-mentioned embodiments, the fixing device of the present utility model can also be directly molded from both sides of the insulating housing of the connector upwards to form clamping channels, clamping walls and arc surfaces, etc., according to the flexible board body. Depends on the material used.

Claims (8)

1. A circuit board fixing device for a low-profile card edge connector, characterized in that the fixing device is formed by bending a flexible board, and its upper edge has an outer curved surface, which is downward along the curved surface There are clamping walls for clamping the circuit board on both sides, the clamping channels in the clamping walls are connected with the insulating housing of the connector, and the clamping walls and clamping channels clamp the upper edge of the circuit board from three directions. 2. The low-profile card edge connector circuit board fixing device according to claim 1, characterized in that, the clamping path formed by the clamping wall of the flexible board extends downwards to form a slot for insertion and fixing on the connector. Pins on the insulating case. 3. The low-profile card edge connector circuit board fixing device according to claim 2, characterized in that, two sides near the bottom of the pins are provided with barbs for strengthening and fixing. 4. The low-profile card edge connector circuit board fixing device according to claim 3, wherein the flexible board body is made of metal material. 5. The low-profile card edge connector circuit board fixing device according to claim 1, characterized in that the two clamping walls are sheet-shaped, directly formed on both sides of the insulating shell, and the upper ends of which are matched with the curved surface to expand outwards. . 6. The low-profile card edge connector circuit board fixing device according to claim 4, characterized in that, the middle part of the flexible board body is concave, and both sides are bulged, and the bulged two sides constitute the left and right clips wall. 7. The low-profile card edge connector circuit board fixing device according to claim 1, wherein the flexible substrate, the clamping channel, the clamping wall and the curved surface are on both sides of the insulating shell of the connector Made in one piece. 8. The low profile card edge connector circuit board fixing device according to claim 1 or 7, characterized in that said fixing devices are arranged symmetrically on both sides of the insulating housing.

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