CN201112929Y - A fixed structure and an electrical connector using the fixed structure - Google Patents

Abstract

A fixing structure for fixing the chip module on the circuit board, which includes a holding frame assembled on the circuit board, a pressure plate and a rocker pivotally connected to the holding frame, the holding frame is provided with a base, and four corners of the base are provided with There is a through hole, wherein the fixing structure also includes washers held on both sides of the through hole. The electrical connector using the above fixing structure can electrically connect the chip module to the circuit board, which includes an insulating body containing a plurality of conductive terminals and a fixing structure arranged on the periphery of the insulating body. Since the gasket in the fixed structure is held on both sides of the through hole, there is no need to reserve the space occupied by the assembly gasket in the through hole, so that the diameter of the through hole that holds the locking piece in the base of the holding frame can be reduced, so as to relax the locking piece (such as a screw and a screw rod). ) The minimum diameter limit, so as to meet the needs of expanding the selection range of locking pieces.

Description

A fixed structure and an electrical connector using the fixed structure

【Technical field】

The utility model relates to a fixing structure and an electrical connector using the fixing structure, in particular to a fixing structure capable of connecting a chip module to a circuit board and an electrical connector using the fixing structure.

【Background technique】

At present, with the comprehensive application of multimedia, communication and computer system technologies, whether it is a desktop computer or a notebook computer, its function is becoming more and more powerful, the design of the computer host is also more complicated, and the speed of replacement is also accelerating. In order to adapt to this development trend, the industry generally uses electrical connectors to electrically connect the chip module to the circuit board, which is convenient for maintenance and updating. A plane grid array electrical connector related to the utility model includes an insulating body, a number of conductive terminals accommodated in the insulating body, a metal reinforcing sheet surrounding the outer side of the insulating body, and pivotally connected to one end of the metal reinforcing sheet for Pressing against the pressing plate of the chip module, and a lever pivotally connected to the other end of the metal reinforcing sheet and capable of engaging with the pressing plate, the plane grid array electrical connector further includes washers assembled at the four corners of the metal reinforcing sheet.

The metal reinforcement sheet is a hollow frame-shaped structure, which includes a lower iron sheet, which is pivotally connected to the front wall extending upward from the lower iron sheet at one end of the pressing plate, and pivotally connected to the rear wall extending upward from the lower iron sheet at one end of the lever. Side walls extend upward from the two opposite outer edges of the lower iron sheet between the rear wall and the rear wall. In addition, circular holes are provided at the four corners of the lower iron sheet of the metal reinforcing sheet.

The washer is fixed in the circular holes at the four corners of the metal reinforcement sheet, which includes a base with a circular hole in the center and a holding portion extending from the center to the same side. Four evenly arranged grooves are arranged at the upper position around the holding part.

When the electrical connector is fixed on the printed circuit board with a locking member, such as a screw, the screw rod of the screw passes through the round hole in the center of the washer, and the nut is close to the side of the washer where the holding part is provided. However, to fix the electrical connector to the printed circuit board with the screw, at least one corner of the nut after tightening must be pressed against the lower iron sheet of the metal reinforcement sheet, because the circular holes provided at the four corners of the lower iron sheet of the metal reinforcement sheet not only require The screw for the screw passes through, and the washer needs to be held, resulting in a larger diameter of the circular hole set at the four corners of the lower iron plate, so a screw with a larger diameter nut must be used, otherwise there is a risk of locking failure; that is, the screw There is a minimum limit on the diameter of the cap, which results in a narrower selection of screws.

In view of the above situation, it is indeed necessary to provide a new type of electrical connector to solve the defects in the prior art solutions.

【Content of utility model】

The technical problem solved by the utility model is to provide a fixing structure and an electrical connector using the fixing structure. The fixing structure and the electrical connector using the fixing structure can be expanded to fix the electrical connector to the printed circuit board. The selection range of the locking piece on the board.

In order to solve the above technical problems, the utility model relates to a fixing structure for fixing the chip module on the circuit board, which includes a holding frame assembled on the circuit board, a pressure plate and a rocker pivotally connected to the holding frame, The holding frame is provided with a base body, and through holes are provided at four corners of the base body, wherein the fixing structure also includes gaskets held on both sides of the through hole.

The electrical connector using the above fixing structure can electrically connect the chip module to the circuit board, which includes an insulating body containing a number of conductive terminals and a fixing structure arranged on the periphery of the insulating body, the fixing structure includes being assembled on the circuit board The holding frame and the pressure plate and rocker pivotally connected to the holding frame, the holding frame is provided with a base body, and through holes are provided at the four corners of the base body, wherein the fixing structure also includes washers clamped on both sides of the through hole.

Compared with the prior art related to the utility model, the utility model has the following advantages: the gasket in the fixed structure is clamped on both sides of the through hole, so the through holes at the four corners of the holding frame base do not need to reserve the space occupied by the assembly gasket, Thereby, the diameter of the through hole of the retaining frame base body to accommodate the locking member can be reduced, so as to relax the restriction on the minimum diameter of the locking member (such as the screw and screw rod), and the screw is a standard part, increasing the selection range of the screw rod will inevitably expand the selection range of the screw, So as to meet the needs of expanding the range of selection of lockware.

【Description of drawings】

Fig. 1 is a three-dimensional assembled view of the fixing structure of the present invention.

Fig. 2 is a perspective view of the washer in the fixing structure shown in Fig. 1 .

FIG. 3 is an exploded perspective view of the electrical connector using the fixing structure shown in FIG. 1 .

FIG. 4 is a perspective assembled view of the electrical connector using the fixing structure shown in FIG. 1 .

FIG. 5 is a perspective assembled view from another angle of the electrical connector using the fixing structure shown in FIG. 1 .

【Detailed ways】

The fixing structure and the electrical connector using the fixing structure will be further described below with reference to the drawings and specific embodiments.

Please refer to Figures 1 to 2, which disclose a fixing structure 90 of the present invention, which is used to fix the chip module (not shown) on the circuit board (not shown), which includes The holding frame 50 on the circuit board, the pressure plate 60 pivotally connected to one end of the holding frame 50 for pressing the chip module, the rocker 70 pivotally connected to the other end of the holding frame 50 and can be buckled with the pressing plate 60, and clamped in the holding Gasket 80 of frame 50 .

Please refer to Figures 3 to 5, which disclose an electrical connector 100 using the above-mentioned fixing structure 90 of the present invention, which can electrically connect the chip module to the circuit board, and it includes a number of conductive terminals (not shown) The insulating body 30 in the figure) and the fixing structure 90 arranged on the periphery of the insulating body 30.

The insulating body 30 has a substantially rectangular structure, and includes a receiving portion 304 located in the middle of the insulating body 30 and sidewalls 308 disposed around the receiving portion 304 . The receiving portion 304 is provided with a receiving surface 305 supporting the chip module, a mounting surface 306 opposite to the receiving surface 305 to be mounted on a printed circuit board, and a plurality of conductive terminal receiving grooves ( not shown). A plurality of conductive terminals are correspondingly accommodated in the conductive terminal receiving grooves. One end of the conductive terminal extends out of the receiving surface 305 to elastically abut against the corresponding conductive gasket (not shown) on the chip module, and the other end is planted with a plug extending out of the mounting surface 306. Solder balls (not shown) to solder the conductive terminals to corresponding soldering points (not shown) on the circuit board.

The holding frame 50 is a frame-shaped structure, which includes a base body 502, a front wall 504 extending upward from the base body 502 at one end of the pivoting pressure plate 60, a rear wall 508 extending upward from the base body 502 at one end of the pivoting rocker 70, and the front wall 504 and The rear walls 508 extend upward from two opposite outer edges of the base body 502 and are parallel to opposite side walls 506 . An opening 503 for accommodating the insulating body 30 is defined in the center of the base body 502 , and a groove 513 is formed adjacent to the rear wall 508 . A pair of locking slots 509 are defined on the front wall 504 for holding the pressing plate 60 . Two ends of the rear wall 508 are provided with a pair of locking pieces 510 bent toward the opening 503 . The supporting piece 512 is extended from two opposite outer edges of the base body 502 to the rear wall 508 near the holding piece 510, and the holding piece 510 and the supporting piece 512 together stably pivotally connect the rocker 70 to the holding frame 50; the holding frame 50 also An arc-shaped hook 514 is provided for locking the rocker 70 . In addition, circular through holes 516 are formed at the four corners of the base body 502 . On a side of the through hole 516 close to the side wall 506 , the base body 502 and the side wall 506 together form a holding hole 505 for holding the washer 80 .

Please refer to FIG. 2 , the gasket 80 is clamped on both sides of the circular through hole 516 of the holding frame 50 , and includes a base 800 and a hook 801 protruding upward from the base 800 . The base 800 is connected by a pair of elastic arms 802 with an elastic effect, which can improve the low elasticity of the gasket 80 caused by the too small length of the hook 801, which may easily cause excessive stress at the root of the hook 801, and the hook 801 is easily broken and damaged. . A pair of elastic arms 802 form a central hole 806 similar in shape to the circular through hole 516 of the holding frame 50 , and the central hole 806 and the through hole 516 are in communication with each other. The base 800 of the washer 80 is also provided with a pair of substantially columnar abutment walls 803, which are symmetrically arranged on both sides of the hook 801, and the abutment walls 803 can abut against the bases on both sides of the through hole 516 of the holding frame 50 502.

The rocker 70 is formed by bending a metal rod, and includes a holding portion 702 pivotally connected to the holding frame 50 and an operating rod 704 vertically extending from the end of the holding portion 702 . The holding portion 702 has a pressing portion 706 in its middle that can be engaged with the pressing plate 60 , and the operating rod 704 has a handle 708 bent outwards at the end.

The pressing plate 60 is a hollow metal frame structure, and it includes a pivoting end 602 pivotally connected to the holding frame 50, a pressing end 606 opposite to the pivoting end 602 to engage with the rocker 70, and connecting the pivoting end 602 and the pressing end. A pair of sides 604 of end 606. Two buckling portions 603 are bent on opposite sides of the pivoting end 602 . When the pressing plate 60 is pivotally connected to the holding frame 50 , the two opposing buckling portions 603 are buckled into the slot 509 . The pressing plate 60 is extended with a strip-shaped positioning portion 605 between the two buckling portions 603 to prevent the pressing plate 60 from overturning and hitting the printed circuit board. A pressing portion 610 is bent and extended from the middle of the pressing end 606 to engage with the pressing portion 706 protruding from the middle of the holding portion 702 of the rocker 70 to lock the pressing plate 60 at the closed position. The two side edges 604 are arc-shaped, and a contact portion (not shown) bent toward the insulating body 30 is provided in the middle to press against the chip module. The outer edge of the side 604 is provided with a downward extension 608 extending toward the holding frame.

The stop ring 40 is in the shape of a ring, and a holding piece 401 is disposed on its inner circumference.

The assembly process of the electrical connector 100 is as follows: first, the pressure plate 60 and the rocker 70 are pivotally connected to the front wall 504 and the rear wall 508 of the holding frame 50, and then the pressure plate 60 and the rocker 70 are rotated away from the opening of the holding frame 50. Position, place the insulating body 30 with the conductive terminals in the opening 503 of the holding frame 50, then clamp the gasket 80 on both sides of the circular through hole 516 at the four corners of the base 502 of the holding frame 50, and finally place the stopper The ring 40 is sleeved on the end of the holding portion 702 of the rocker 70 , which is located outside the holding frame 50 .

After the electrical connector 100 is welded on the circuit board, when the pressing plate 60 and the rocker 70 are in the open position away from the holding frame 50, place the chip module on the insulating body 30, and then press down the pressing end 606 of the pressing plate 60 to make the pressing The end 606 extends into the groove 513 of the holding frame 50, and then the rocker 70 is rotated, the pressing part 706 of the rocking rod 70 presses against the pressing part 610 of the pressing plate 60, and then the handle 708 is fastened to the hook of the holding frame 50 514 , the stop ring 40 abuts against the support piece 512 , the pressure plate 60 and the rocker 70 are both in the closed position, so that the chip module is connected with the electrical connector 100 .

In order to more securely position the electrical connector 100 on the circuit board, it is usually necessary to fix the electrical connector 100 and the circuit board together by means of screws (not shown) and other fasteners. Because in this embodiment, the washer 80 in the fixing structure 90 is clamped and fixed on both sides of the through hole 516 of the holding frame 50 by the hook 801 protruding upward and the abutment wall 803, so the four corners of the base 502 of the holding frame 50 The through hole 516 does not need to reserve the space occupied by the assembly washer 80, so that the diameter of the through hole 516 of the holding frame 50 base 502 that accommodates the locking piece can be reduced, so as to relax the limit on the minimum diameter of the locking piece (such as a screw rod), and the screw is a standard Parts, increasing the selection range of the screw rod will inevitably expand the selection range of the screw, so as to meet the needs of expanding the selection range of the lock piece. In addition, the base 800 of the washer 80 in the fixing structure 90 is connected by a pair of elastic arms 802, which can improve the low elasticity of the washer 80 caused by the too small length of the hook 801, which may cause excessive stress at the root of the hook 801. The problem that the hook 801 is easily broken and damaged effectively protects the washer 80 and prolongs the service life of the washer 80 .

It should be noted that the above-mentioned embodiments are only preferred implementations of the present invention, and any improvements and transformations based on this embodiment should not deviate from the technical solution of the present invention. Any equivalent changes to the technical solution of the utility model adopted by persons of ordinary skill in the art by reading the description of the utility model are covered by the claims of the utility model.

Claims (10)

1. A fixing structure for fixing the chip module to the circuit board, comprising a holding frame assembled on the circuit board and a pressure plate and a rocker pivotally connected to the holding frame, the holding frame is provided with a base, and the four corners of the base are A through hole is provided at the place, and the feature is that: the fixing structure also includes washers clamped on both sides of the through hole. 2. The fixing structure according to claim 1, wherein the washer comprises a base and a hook extending upward from the base. 3. The fixing structure according to claim 2, wherein the base is connected by a pair of elastic arms. 4. The fixing structure according to claim 3, wherein the pair of elastic arms form a central hole, and the central hole communicates with the through hole. 5 . The fixing structure according to claim 2 , wherein the base is provided with abutting walls on both sides of the hook that can abut against the base of the holding frame. 5 . 6. The fixing structure according to claim 1, characterized in that: the base of the holding frame extends upwards with side walls, and the side walls and the base form a holding hole. 7. An electrical connector, capable of electrically connecting a chip module to a circuit board, comprising an insulating body containing a plurality of conductive terminals and a fixing structure arranged on the periphery of the insulating body, the fixing structure including an assembly on the circuit board The holding frame and the pressure plate and rocker pivotally connected to the holding frame, the holding frame is provided with a base body, and through holes are provided at the four corners of the base body, and the feature is that the fixing structure also includes washers clamped on both sides of the through hole. 8. The electrical connector as claimed in claim 7, wherein the washer comprises a base and a hook extending upward from the base. 9. The electrical connector according to claim 7, wherein the base is connected by a pair of elastic arms, and the elastic arms form a central hole communicating with the through hole. 10 . The electrical connector as claimed in claim 7 , wherein the base portion is provided with abutting walls on both sides of the hook that can abut against the base of the holding frame. 11 .

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