TWI532260B - Card edge connector - Google Patents

Description

Card edge electrical connector

The present invention relates to an electrical connector, and more particularly to a card edge electrical connector having a stop pin.

Many electronic devices use expansion cards to enhance the performance of the electronic device. For example, the increase in memory cards allows computer systems to process large application calculations quickly and smoothly, and these expansion cards are quite small, in order to enable these expansion cards. Different types of electrical connectors have been developed in connection with the board, and the card edge type electrical connector in which the retaining pin is used to secure the expansion card is the most common one.

Generally, the card edge type electrical connector for loading a memory card has a stopper pin on both end ends thereof, and these stopper pins can help fix the memory card in the slot of the card edge type electrical connector. It can also be used to withdraw the memory card, and each time the card edge type electrical connector is fixed or exits the memory card, the two side stopper pins must be manually moved to achieve the fastening. Fixed or loosened the purpose of the memory card.

However, most of the stopper pins are coupled to the base of the card edge type electrical connector by means of a snap fit and a card slot. When the stopper pin is stressed, the stress is easily concentrated on the cassette and the card slot. Therefore, after long-term use, the cassette and the card slot are easily worn out and cause fatigue damage, so that the fixing force of the stopper pin is reduced and loose, resulting in the fact that the stopper pin and the expansion card cannot be buckled, or the fastening is not tight. In turn, the memory card is loose or poorly contacted and cannot perform its intended function.

Therefore, how to make the retaining pin of the card edge type electrical connector maintain good holding force and fastening force, and improve the service life of the card edge type electrical connector, which is the standard developed by the industry.

In view of the above problems, the present invention provides a card edge electrical connector, which solves the problem that the retaining pin of the conventional card edge type electrical connector adopts a design in which the latch and the card slot are engaged with each other, and the stress generated during use is concentrated on At the fastening point, the structure is easily worn and fatigue is broken, resulting in a problem that the fixing force of the stopper pin is lowered and the memory card is loosened.

The invention provides a card edge electrical connector for providing an expansion card electrical insertion, and the card edge electrical connector comprises a body and at least one stop pin. The base body has a slot, the expansion card is inserted into the slot, and one end of the base body further has at least one convex axis, and the outer contour shape of the convex shaft is a polygonal structure. The retaining pin has a shaft hole, and the hole shape of the shaft hole is a polygonal structure matching the convex shaft, and the stopping pin is pivotally connected to the protruding shaft by the shaft hole, so that the corners of the shaft hole and the convex shaft form a polygonal positioning structure. Wherein, the maximum rotation radius of the convex axis is smaller than the radius of the circumscribed circle of the shaft hole, and the maximum rotation radius of the convex axis is greater than or equal to the radius of the inscribed circle of the shaft hole, and the stopper pin rotates relative to the seat body with the convex axis as the rotation axis. One corner of the protruding shaft is located at one corner of the shaft hole, and when the stopping pin rotates toward the expansion card, the stopping pin closes the expansion card, and the stopping pin rotates away from the expansion card, and the expansion card exits the slot.

The utility model has the advantages that the card edge electrical connector utilizes a polygonal positioning structure formed by a convex shaft and a shaft hole, thereby dispersing the strength of the buckle point to reduce the wear rate, thereby increasing the wear resistance of the convex shaft and the shaft hole. The retaining pin can maintain a good holding force and fastening force for a long time, and at the same time improve the service life of the card edge electrical connector.

Hereinafter, the features, implementations, and effects of the present invention will be described in detail with reference to the drawings as a preferred embodiment.

10‧‧‧ card edge electrical connector

20‧‧‧Expansion card

100‧‧‧ body

110‧‧‧ slots

120‧‧‧Shaft axis

121‧‧‧ slotting

122‧‧‧faced

123‧‧‧guide fillet structure

130‧‧‧Limited

131‧‧‧Bevel

200‧‧‧stop sales

210‧‧‧ shaft hole

220‧‧‧Turning Department

221‧‧‧ rib

230‧‧‧ side wall

231‧‧ ‧ gap

240‧‧‧Outing Department

250‧‧‧ reinforcing ribs

P1‧‧‧Axis of the shaft hole

Angle of the P2‧‧‧ convex axis

R1‧‧‧Maximum radius of rotation

R2‧‧‧circular radius

R3‧‧‧ inscribed circle radius

Fig. 1 is an exploded perspective view showing the card edge electrical connector of the first embodiment of the present invention.

Fig. 2 is a partially enlarged schematic view showing the base of the card edge electrical connector of the first embodiment of the present invention.

Figure 3 is a side elevational view of the retaining pin of the card edge electrical connector of the first embodiment of the present invention.

Fig. 4 is a perspective view showing the stopper pin of the card edge electrical connector of the first embodiment of the present invention.

FIG. 5 is a schematic view showing the combination of the card edge electrical connector snap-in expansion card according to the first embodiment of the present invention.

Figure 6 is a schematic view showing the operation of the card edge electrical connector of the first embodiment of the present invention to exit the expansion card.

Figure 7 is a partially enlarged view of the card edge electrical connector of the second embodiment of the present invention.

Figure 8 is a partially enlarged view of the card edge electrical connector of the third embodiment of the present invention.

The card edge electrical connector 10 of the third embodiment of the present invention is exemplified by an electrical connector (PCI Express) of an expansion card as an example, but is not limited to the disclosed type. The technician can change the appearance of the card edge electrical connector 10 of the present invention according to actual design requirements or usage requirements, so as to be suitable for inserting various types of expansion cards 20 as seen on the market.

Please refer to the first embodiment of the present invention shown in FIGS. 1 to 5 An exploded schematic view and a combined schematic view of the disclosed card edge electrical connector 10. The card edge electrical connector 10 of the embodiment is electrically disposed on a motherboard (not shown) and is configured to provide an expansion card 20, wherein the expansion card 20 includes but is not limited to a memory. A card (DDR SDRAM), a printed circuit board (PCB) or a small interface card (Interface Card), and embodiments of the present invention are exemplified by a memory card such as DDR, DDR2 or DDR3.

The card edge electrical connector 10 of the present embodiment includes a body 100 and two stop pins 200. The base 100 has a slot 110 and two protruding shafts 120. The two protruding shafts 120 are respectively located at opposite ends of the base 100. The slot 110 is located between the two protruding shafts 120, and the axis of the two protruding shafts 120 is disposed. The direction is perpendicular to the direction in which the slot 110 is disposed, and the two ends of the protruding shaft 120 protrude from the outside of the base 100 in the axial direction for pivoting the stopper pin 200. In addition, one end of the expansion card 20 is provided with an electrical connection interface, and the expansion card 20 is inserted into the slot 110 with an electrical connection interface to form an electrical conduction relationship with the motherboard.

The two stopper pins 200 of the embodiment respectively have a shaft hole 210, and the two stopper pins 200 are respectively pivotally connected to the two convex shafts 120 by the shaft holes 210, and the two convex shafts 120 are respectively used as the rotating shafts, so that The driving pin 200 is rotatable relative to the base body 100 so as to fasten the left and right side edges of the expansion card 20, so that the expansion card 20 can be fixed in the slot 110, and the electrical property between the expansion card 20 and the motherboard is stably maintained. Connection relationship.

The number of the protruding shaft 120 and the retaining pin 200 of the card edge electrical connector 10 disclosed in the present invention is two, which are disposed at the left and right ends of the base 100, in order to enable the stopper pin 200 to exert an average force. And the expansion card 20 is firmly fastened, but the number of the protruding shaft 120 and the stopping pin 200 may also be one, and may be disposed at one end of the base 100, for example, according to user requirements or space constraints. The arrangement position of the male shaft 120 and the stopper pin 200 is configured to achieve the above object.

Please refer to FIG. 2 at the same time, which is a partially enlarged schematic view of the base of the card edge electrical connector 10 disclosed in the first embodiment of the present invention. Further The detailed structure and the operation mode of the base 100 and the stopper pin 200 of the present embodiment are described. The convex shaft 120 of the base 100 of the present embodiment is a polygonal shape formed by connecting a plurality of cutting surfaces 122 to each other, so that the convex shaft 120 is The outer contour shape is substantially a regular polygonal structure such as a regular pentagon, a regular hexagon or a regular octagon, and the like, and is not limited thereto. In contrast, the stopper pin 200 of the embodiment has two opposite sidewalls 230, and the shaft holes 210 are respectively penetrated through the two sidewalls 230. The hole shape of the shaft hole 210 is matched with the convex shaft 120. An angular structure such as a regular pentagonal hole, a regular hexagonal hole or a regular octagonal hole or the like.

Please refer to FIG. 3 and FIG. 4 simultaneously, which are a side view and a perspective view of a retaining pin of the card edge electrical connector 10 according to the first embodiment of the present invention. It is further explained that when the two stopper pins 200 are pivotally connected to the two convex shafts 120, the respective corners P1 of the shaft holes 210 and the respective corners P2 of the convex shaft 120 are matched with each other, and the respective cutting planes 122 of the convex shaft 120 correspond to The sides of the hole edge of the shaft hole 210 are configured to form a positive polygonal positioning structure, thereby dispersing the force of the buckle point to reduce the wear rate, and the relative position of the protruding shaft 120 and the shaft hole 210 can be kept fixed. The effect of gravity is automatically rotated and displaced to achieve the positioning effect.

Wherein, the maximum rotation radius R1 of the convex shaft 120 is smaller than the circumscribed circle radius R2 of the shaft hole 210, and the maximum rotation radius R1 of the convex shaft 120 is greater than or equal to the inscribed circle radius R3 of the shaft hole 210, the purpose is to The respective corners P2 of the convex shaft 120 (ie, the maximum radius of rotation R1 of the convex shaft 120) can be tightly fitted to the respective sides of the shaft hole 210 (ie, the inscribed circle radius R3 of the shaft hole 210), so that the stopper pin 200 is formed by the convex shaft 120. When the shaft is rotated and rotated relative to the seat body 100, the multi-point contact is used to increase the area of the force bearing to achieve the function of dispersing the force, and the maximum radius of rotation R1 of the convex shaft 120 is smaller than the outer shape of the shaft hole 210. The circular radius R2, when rotated at an angle, the respective angles P2 of the convex shaft 120 fall into the respective corners P1 of the shaft hole 210, so that the convex shaft 120 and the shaft hole 210 can be positioned to each other without loosening. In addition, each of the two cut surfaces 122 on the convex shaft 120 has a rounded corner structure to prevent the convex shaft 120 from scraping. The hole edge of the shaft hole 210 is damaged to reduce the risk of the buckle force being reduced due to wear.

As shown in FIG. 5, when the expansion card 20 is inserted into the slot 110 and the two stopper pins 200 are respectively rotated toward the central expansion card 20, one of the corners P2 of the convex shaft 120 will be The rotation falls into one of the corners P1 of the shaft hole 210 and is positioned therein, and at the same time, the stopper pin 200 is fastened to the left and right side edges of the expansion card 20 to fix the expansion card 20 to keep the expansion card 20 and the motherboard Good electrical connection. Based on the above structure, the purpose is to disperse the torsion force during rotation to the fastening points of the respective corners to reduce the wear rate, thereby increasing the wear resistance of the protruding shaft 120 and the shaft hole 210, so that the stopper pin 200 can maintain good retention. The force and the fastening force, as well as the service life of the card edge electrical connector 10.

Please refer to FIG. 6 at the same time, which is a schematic diagram of the operation of the card edge electrical connector 10 of the first embodiment of the present invention to exit the expansion card. In addition, the bottom surface of the stopper pin 200 of the embodiment further has an ejector portion 240 corresponding to the position of the slot 110, and the ejector portion 240 is provided with a pair of reinforcing ribs 250 for lifting the ejector portion 240. The force prevents the ejector portion 240 from being broken due to excessive force, thereby increasing its service life. As described above, when the expansion card 20 is inserted into the slot 110, the bottom surfaces of the left and right side edges are disposed on the ejector portion 240. Therefore, when the two stopper pins 200 are respectively rotated in the direction away from the expansion card 20, That is, the two stopper pins 200 are opened outwardly of the base 100, so that the two stopper pins 200 release the expansion card 200, and the ejector portion 240 is also cocked upward, and the expansion card 20 is pushed together. The outside of the slot 110, thereby simplifying the steps of disassembling or replacing the expansion card 20, making the user more convenient to use.

In addition, in order to provide better handling, the base 100 of the embodiment further has a limiting portion 130 located below the two stopping pins 200, and the limiting portion 130 has a slope 131 near one end of the stopping pin 200. When the two stopper pins 200 are rotated toward the expansion card 20, the bottom surfaces of the two stopper pins 200 are respectively attached to the limiting portion 130, and the expansion card 20 is fastened; if the two stopper pins 200 are facing away from each other, When the expansion card 20 rotates in the direction, the two stopper pins 200 The upper end of the inclined surface 131 is respectively restrained, thereby limiting the rotation angle of the two stopper pins 200, thereby preventing the force of the two stopper pins 200 from being excessively damaged when the expansion card 200 is withdrawn, thereby achieving the effect of protecting the expansion card 200 and the stopper pin 200.

In addition, as shown in FIG. 4, the stopper pin 200 of the embodiment further has a triggering portion 220 extending from the top surface of the stopper pin 200 to the outside of the seat body 100 so that the user can use the triggering portion 220. The stop pin 200 is rotated. At the same time, the plurality of ribs 221 are disposed on the triggering portion 220, so that the pulling portion 220 increases the frictional force and prevents the hand from slipping, so that the user can easily open or fasten the expansion card 20, thereby achieving fast and convenient operation. efficacy.

The overall structure of the card edge electrical connector 10 disclosed in the second embodiment of the present invention is similar to that of the card edge electrical connector of the first embodiment described above, and therefore the following only describes the difference between the two.

Please also refer to FIG. 7, which is a partial enlarged view of the card edge electrical connector 10 of the second embodiment of the present invention. The card edge electrical connector 10 of the second embodiment of the present invention is different from the card edge electrical connector disclosed in the first embodiment in that the protruding shaft 120 of the base 100 of the second embodiment has a plurality of slots 121. The plurality of slots 121 are respectively located on opposite end faces of the protruding shaft 120, and are arranged along the radial direction of the protruding shaft 120. In detail, the positions of the slots 121 are disposed on the protruding shaft 120. When each of the opposite sides passes through the axis, when the stopper pin 200 rotates relative to the base 100 with the convex axis 120 as a rotation axis, each angle P2 of the convex axis 120 (ie, the maximum rotation radius R1 of the convex axis 120) will Temporary deformation is caused by the compression of each side of the shaft hole 210 (ie, the inscribed circle radius R3 of the shaft hole 210), and the plurality of slots 121 provide a space for telescopic elasticity, so that the stopper pin 200 can be easily rotated or It is an angled positioning.

The number of the slits 121 is determined according to the polygonal structure of the convex shaft 120. For example, if the convex shaft 120 is a regular octagon, the number of the slits 121 is eight, and so on, and is not limited thereto. However, the position of the slit 121 may be set on a line formed by the respective diagonals of the convex shaft 120 through the axial center. The same purpose as above can be achieved.

The overall structure of the card edge electrical connector 10 disclosed in the third embodiment of the present invention is similar to the card edge electrical connector of the first and second embodiments described above, and therefore the following content will only be described in detail for differences between the two.

Please also refer to FIG. 8, which is a partial enlarged view of the card edge electrical connector 10 of the third embodiment of the present invention. The card edge electrical connector 10 of the third embodiment of the present invention is different from the card edge electrical connector disclosed in the first and second embodiments in that the protruding shaft 120 of the base 100 of the third embodiment has the above plural In addition to the slits 121, the opposite side walls 230 of the stopper pin 200 are further provided with a notch 231, and each of the notches 231 is respectively communicated with the shaft hole 210, and the purpose thereof is also to provide a space for the elastic expansion of the shaft hole 210, and the convex shaft Both the 120 and the shaft hole 210 are provided with a telescopic space structure, so that the stopper pin 200 can be smoothly rotated or positioned at an angle.

It can be clearly seen from the description of the embodiments of the present invention that the card edge electrical connector of the present invention has a polygonal structure through the convex shaft and the shaft hole, and can solve the problem that the retaining pin of the conventional card edge electrical connector is a card. The design in which the cymbal and the card slot are engaged with each other causes the stress to concentrate on the fastening point, so that the fatigue damage is easily caused by the wear, and the fixing force of the stopper pin is lowered to cause the expansion card to loosen.

Compared with the prior art, the card edge electrical connector of the present invention utilizes a polygonal positioning structure formed by a convex shaft and a shaft hole, thereby dispersing the force of the buckle point to reduce the wear rate, thereby increasing the convex axis and the shaft hole. The endurance strength enables the retaining pin to maintain a good holding force and fastening force, and at the same time improve the service life of the card edge electrical connector, and further, the relative position of the male shaft and the shaft hole can be kept fixed, and the ground can be kept The effect of the gravitational force is automatically rotated and displaced to achieve the positioning effect. In addition, the stopper pin also has a structure for ejecting the expansion card, which is more convenient for the user to use, and if the design of the limiting portion is matched, the force of the stopper pin to exit the expansion card is prevented from being excessively damaged, thereby achieving protection. The effect of the expansion card and the stop pin.

Although the embodiments of the present invention are disclosed above, they are not used. The invention is not limited by the spirit and scope of the invention, and the shapes, structures, features and quantities described in the scope of the application of the invention may be modified in some ways, and thus the patent protection of the present invention. The scope is subject to the definition of the scope of the patent application attached to this specification.

10‧‧‧ card edge electrical connector

20‧‧‧Expansion card

100‧‧‧ body

110‧‧‧ slots

120‧‧‧Shaft axis

200‧‧‧stop sales

210‧‧‧ shaft hole

Claims (10)

A card edge electrical connector for electrically inserting an expansion card, the card edge electrical connector comprising: a body having a slot, the expansion card being inserted into the slot, one end of the base Further having at least one convex axis, and the outer contour shape of the convex shaft is a polygonal structure; and at least one stopper pin having a shaft hole, and the hole shape of the shaft hole is a polygonal structure matching the convex axis, The stopping pin is pivotally connected to the protruding shaft by the shaft hole, so that the corner of the shaft hole and the corner of the protruding shaft form a polygonal positioning structure; wherein the maximum rotation radius of the protruding shaft is smaller than the radius of the circumscribed circle of the shaft hole, and The maximum rotation radius of the convex shaft is greater than or equal to the radius of the inscribed circle of the shaft hole, and the stopping pin rotates relative to the seat body with the convex axis as a rotation axis, wherein one corner of the convex shaft is located in the shaft hole a corner, and when the stop pin rotates toward the expansion card, the stop pin snaps the expansion card, the stop pin rotates away from the expansion card, and the expansion card exits the slot. The card edge electrical connector of claim 1, wherein the opposite ends of the protruding shaft have a plurality of slots, and the slots are arranged in a radial direction along the convex axis. The card edge electrical connector of claim 1, wherein the convex axis is formed into a polygonal shape by a plurality of tangential planes, and has a rounded corner structure at the intersection of each of the two tangential planes. The card edge electrical connector of claim 1, wherein the base body further has a limiting portion, and the limiting portion has a slope, the stopping pin is rotated toward the expansion card, and the stopping pin is attached. In conjunction with the limiting portion, the stopping pin rotates away from the expansion card, and the stopping pin abuts against the inclined surface. The card edge electrical connector of claim 1, wherein the stopper pin further has a trigger portion extending from a top surface of the stopper pin to the outside of the holder. The card edge electrical connector of claim 5, wherein the trigger portion is provided with a plurality of ribs. The card edge electrical connector of claim 1, wherein the retaining pin further has two opposite side walls, and the shaft holes respectively extend through the two side walls. The card edge electrical connector of claim 7, wherein the two side walls respectively have a notch, and each of the notches is respectively connected to the shaft hole. The card edge electrical connector of claim 1, wherein the bottom surface of the retaining pin further has an ejector portion corresponding to the slot, and the expansion card pushes the insertion portion with the ejector portion groove. The card edge electrical connector of claim 9, wherein the ejector portion is provided with a reinforcing rib.