TWI476564B - Card latching mechanism - Google Patents

Description

Card fixing device

The invention relates to a fixing structure, in particular to a card fixing device in an electronic device chassis.

Generally, expansion cards, such as sound card and graphics accelerator card, are used to enhance the performance of the computer. Most of the cards are fixed in the chassis by the fixing piece connected thereto, and the fixing pieces are fixed by screws, and the fixing pieces are often arranged in rows. When fixing with screws, it is necessary to use a corresponding screwdriver for installation and disassembly, which makes installation and disassembly inconvenient.

In order to avoid the troubles caused by the use of the screw fixing, in some card fixing devices, a crimping member is added, and the edge of the crimping member is bent perpendicularly to the plurality of buckles, and the plurality of buckles are respectively held by the corresponding fixing pieces. On the outside, it is guaranteed that the fixing piece will not be detached from the frame. When the fixing piece needs to be disassembled, the crimping piece can be lifted up, the buckle on the crimping piece can be detached from the fixing piece, and the fixing piece can be removed, and the crimping piece can be lifted only during installation. It is convenient to install and disassemble. However, in the production process, the size and thickness of the fixed piece may be more or less different, and the size of the part of the frame for mounting the fixed piece may also be biased, resulting in the installation of a plurality of fixed pieces. After being placed on the frame body, a part of the fixing piece and the buckle are stored in the gap and may be shaken on the frame body, thereby causing the expansion card connected to the part of the fixing piece to be unstable or not in good contact with the chassis.

In view of the above circumstances, it is necessary to provide a card fixing device capable of stably fixing a fixing piece to a frame body, thereby stably fixing the expansion card to the chassis.

A card fixing device comprises a frame body, a fixing piece mounted on the frame body and a crimping piece, and the pressing piece comprises a pressing portion and a plurality of snap-in elastic pieces extending from the pressing portion and bent, the fixing piece The utility model comprises a retaining portion and a locking portion, wherein the retaining portion is bent relative to the locking portion, and the pressing portion of the crimping member is pressed against the locking portion of the fixing piece, and the snap elastic piece is clamped on the retaining portion, and the snap elastic piece is opposite The pressing portion is inclined to the fixing piece to a greater extent than the locking portion of the fixing piece is inclined with respect to the locking portion, and the snap elastic piece includes a connecting portion, a holding portion and a warping portion which are smoothly connected in sequence, and the connecting portion is from the The edge of the pressing portion extends flush with the pressing portion in a direction away from the fixing piece, and the holding portion is bent and extended from the end of the connecting portion toward the fixing piece, and the warping portion is from the holding portion The end is bent and extended in a direction away from the fixing piece, and the fixing piece is caught by the connecting portion of the holding portion and the warping portion.

Another card fixing device comprises a frame body, a fixing piece mounted on the frame body and a crimping piece. The pressing piece comprises a pressing portion and a plurality of snap-up elastic pieces extending from the pressing portion, and the pressing portion can be abutted Pressing on one end of the fixing piece, the snapping elastic piece is a bent structure. When the locking elastic piece is clamped on the fixing piece, the locking elastic piece is elastically deformed and applies an elastic clamping force to the fixing piece, and the locking elastic piece comprises a smooth connection in sequence. a connecting portion, a holding portion, and a warping portion, the connecting portion extending from the edge of the pressing portion and the pressing portion in a direction away from the fixing piece, the holding portion being close to the end of the connecting portion The fixing piece is bent and extended, and the warping portion is bent and extended from the end of the holding portion in a direction away from the fixing piece, and the fixing piece is caught by the connecting portion of the holding portion and the warping portion.

The card fixing device comprises a frame body, a fixing piece mounted on the frame body and a crimping piece. The fixing piece comprises a locking part and a blocking part bent from the one end of the locking part, the crimping part The pressing portion includes a clamping portion extending from the edge of the pressing portion, and the pressing portion is pressed against the locking portion of the fixing piece, and the holding portion can be clamped on the holding portion of the fixing piece, and the holding portion is The end portion is located in a projection area of the pressing portion along the extending direction of the retaining portion of the fixing piece, and the snap elastic piece includes a connecting portion, a holding portion and a warping portion which are smoothly connected in sequence, and the connecting portion is from the edge of the pressing portion Hanging away from the fixing piece in a direction away from the pressing piece, the holding part is bent and extended from the end of the connecting part toward the fixing piece, and the warping part is away from the end of the holding part The direction of the fixing piece is bent and extended, and the fixing piece is caught by the connecting portion of the holding portion and the warping portion.

The buckled elastic piece in the card fixing device has a greater degree of bending than the fixed piece, so that when the snap-up elastic piece is held by the fixed piece, each fixed piece is more or less affected by the snap-up piece. The elastic resisting force is stably fixed to the frame body, thereby ensuring that the expansion card is stably fixed to the chassis.

100‧‧‧ card fixture

10‧‧‧ ‧ body

30‧‧‧Fixed tablets

50‧‧‧Crimping parts

70‧‧‧Flexible parts

90‧‧‧ pivot

11‧‧‧ bracket

13‧‧‧ Fixed Department

111‧‧‧ top surface

113‧‧‧Fixed surface

1111‧‧‧Limited blank

1131‧‧‧Receiving Department

131‧‧‧ side panels

1311‧‧‧Axis hole

1313‧‧‧Hook hole

31‧‧‧Banding Department

33‧‧‧Locking Department

35‧‧‧Interface

51‧‧‧Resistance Department

53‧‧‧ pivoting piece

55‧‧‧Snap snaps

531‧‧‧Pivot hole

533‧‧‧Fixed holes

551‧‧‧Connecting Department

553‧‧‧Keeping Department

555‧‧‧ Warpage Department

71‧‧‧ Reeds

73‧‧‧ first hook

75‧‧‧second hook

1 is an assembled view of a card fixing device according to an embodiment of the present invention.

Figure 2 is an exploded view of the card securing device of Figure 1.

Figure 3 is a partial enlarged view of the crimping member of Figure 2;

4 is another state diagram of the card fixing device of FIG. 1.

The card fixing device of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to FIG. 1 , the card fixing device 100 includes a frame body 10 , a plurality of fixing pieces 30 mounted on the frame body 10 , a crimping member 50 pivotally connected to the frame body 10 , an elastic member 70 , and a pivoting joint 50 and a pivot 90 of the frame 10. Expansion card (not shown) fixedly connected to fixed On the sheet 30, the expansion card is fixed to the card fixing device 100 by the fixing piece 30 connected thereto. When the expansion card is not required to be disposed at a certain position, the fixing piece 30 to which the expansion card is not connected is disposed at the corresponding position.

Referring to FIG. 2 together, the frame body 10 includes a bracket portion 11 for fixing the fixing piece 30 and a fixing portion 13 connected to one end of the bracket portion 11. The bracket portion 11 has a top surface 111 and a fixing surface 113 perpendicular to the top surface 111. A limiting piece 1111 is protruded from one end of the top surface 111, and a plurality of frame-shaped receiving portions 1131 are protruded from the fixing surface 113. The two sides of the fixing portion 13 are bent to form two side plates 131, and each of the side plates 131 is provided with a shaft hole 1311 and a hanging hole 1313. The frame body 10 is fixed to the chassis (not shown) by the fixing portion 13.

The fixing piece 30 is a substantially "L"-shaped sheet-like structure, and includes a retaining portion 31, a locking portion 33 bent from one end of the retaining portion 31, and a plug portion 35 extending from the other end of the retaining portion 31. A first angle is formed between the retaining portion 31 and the latching portion 33. In the present embodiment, the first angle between the retaining portion 31 and the latching portion 33 is about 90°, that is, the latching portion 33 is vertically bent from one end of the retaining portion 31.

Referring to FIG. 2 and FIG. 3 together, the crimping member 50 includes a pressing portion 51, two pivoting pieces 53 formed by bending from the two ends of the pressing portion 51, and a plurality of pivoting pieces extending from the edge of the pressing portion 51. Buckle shrapnel 55. A pivot hole 531 and a fixing hole 533 are defined in the pivoting piece 53.

The snap elastic piece 55 includes a connecting portion 551, a holding portion 553, and a warping portion 555 which are sequentially connected, and each portion is a smooth connection. In the card fixing device 100, the connecting portion 551 extends in a direction away from the fixing piece 30 from the edge of the pressing portion 51 and the pressing portion 51, and the holding portion 553 approaches the fixing piece 30 from the end of the connecting portion 551. The direction is bent and extended, and the warped portion 555 is bent and extended from the end of the holding portion 553 in a direction away from the fixing piece 30, and the second angle is formed between the holding portion 553 and the connecting portion 551, wherein the second angle is formed. The first angle between the retaining portion 31 of the fixing piece 30 and the locking portion 33, that is, the snap tab The degree of inclination of the opposing pressing portion 51 toward the fixing piece 30 is greater than the inclination of the blocking portion 31 of the fixing piece 30 with respect to the locking portion 33, and the end of the holding portion 553 is fixed along the pressing portion 51 of the crimping member 50. The projection area of the extending direction of the retaining portion 31 of the sheet 30. In the present embodiment, the second angle between the catching portion 553 and the connecting portion 551 is less than 90°.

The elastic member 70 is a torsion spring that includes a coil portion 71 and a first hook 73 and a second hook 75 that extend radially from the coil portion 71 in opposite directions.

The pivot 90 is a pin which, after being assembled on the frame 10, has a larger diameter at both ends by riveting.

Referring to FIG. 2 to FIG. 4 together, when the card fixing device 100 is assembled, the crimping member 50 is attached to the frame body 10, and the two pivoting pieces 53 are in contact with the two side plates 131 of the fixing portion 13 of the frame body 10, so that The pressing portion 51 of the crimping member 50 is pressed against the top surface 111 of the bracket portion 11 of the frame body 10. The pivot 90 is passed through the pivot hole 531 of the pivot piece 53 of the crimping member 50 and the shaft hole 1311 of the fixing portion 13 of the frame body 10 and is riveted. The first hook 73 of the elastic member 70 is inserted into the fixing hole 533 of the pivot piece 53 of the crimping member 50, and the second hook 75 is inserted into the hanging hole 1313 of the side plate 131 of the fixing portion 13 of the frame 10. At this time, the elastic member 70 is subjected to a torsional force to undergo a certain torsional deformation, and the elastic member 70 which is subjected to the torsional deformation applies an elastic force to the crimping member 50, so that the pressing portion of the crimping member 50 is pressed against the bracket portion 11 of the frame body 10. The top surface 111.

When the fixing piece 30 is mounted, the crimping member 50 is pulled to rotate about a certain angle with respect to the pivot 90, and the pressing portion 51 of the crimping member 50 is separated from the top surface 111 of the bracket portion 11 of the frame body 10 and the elastic member 70 is further extended. Torsional deformation occurs. The insertion portions 35 of the plurality of fixing pieces 30 are inserted into the plurality of receiving portions 1131 of the frame body 10, and the locking portions 33 of each of the fixing pieces 30 are brought into contact with the top surface 111 of the holder portion 11 of the frame body 10. When the crimping member 50 is loosened, the elastic restoring force of the elastic member 70 causes the crimping member 50 to automatically rotate in the opposite direction of being pulled and press the plurality of fixing pieces. The latching portion 33 of the 30 is engaged with the retaining portion 31 of the fixing piece 30. Since the buckle elastic piece 55 on the crimping member 50 is inclined toward the fixing piece 30 by the pressing portion 51 to a greater extent than the locking portion 31 of the fixing piece 30 is inclined with respect to the locking portion 33, when the crimping member 50 is buckled, When the elastic piece 55 is held by the fixing piece 30, the locking elastic piece 55 is elastically deformed in a direction away from the holding portion 31 by the abutting portion 31 of the fixing piece 30, and a resilient force is applied to the blocking portion 31. Holding power.

When the fixing piece 30 needs to be removed, the crimping member 50 is pulled to rotate the crimping member 50 about the pivot 90 by a certain angle, and the pressing portion 51 of the crimping member 50 releases the locking portion 33 of the plurality of fixing members 30. . An upward force is applied to the fixing piece 30, and the insertion portion 35 of the fixing piece 30 is pulled out from the housing portion 1131 of the frame body 10, and the fixing piece 30 is removed from the frame body 10. If the plurality of fixing pieces 30 are to be removed, the other fixing pieces 30 are continuously biased, and they can be removed from the frame body 10. When the crimping member 50 is rotated by a certain angle, the elastic member 70 is deformed by the torsion.

In the card fixing device 100, the degree of bending of the snap elastic piece 55 on the crimping member 50 is greater than the bending degree of the fixing piece 30, so that when the fixing piece 30 is mounted on the frame body 10, regardless of the size of the fixing piece 30 Whether or not there is a difference, each of the snap tabs 55 is in contact with the retaining portion 31 of each of the fixing pieces 30, and an elastic abutting force is applied to each of the fixing pieces 30 to ensure that each of the fixing pieces 30 is stably fixed. On the frame body 10.

The end of the latching portion 553 of each of the latching elastic pieces 55 is bent away from the fixing piece 30 to form a warped portion 555, which is equivalent to forming a chamfer at the end of the latching portion 553, so as to facilitate the snapping elastic piece 55 on the crimping member. When the 50 is turned down, it slides down along the stopper portion 31 of the fixing piece 30. The connecting portion 551, the holding portion 553 and the warping portion 555 are smoothly connected, and the fixing piece 30 is not scratched when being held by the fixing piece 30, and the stress concentration is unfavorable, and the service life of the snap elastic piece 55 is prolonged.

In the card fixing device 100, the elastic member 70 acts on the crimping member 50, so that the crimping member 50 presses the locking portion 33 of the fixing piece 30 without locking with a screw. When it is necessary to disassemble or install the expansion card to which the fixing piece 30 is connected, the fixing piece 30 can be attached to or removed from the frame body 10 by manually pulling the crimping member 50, thereby completing the installation of the expansion card. And disassembly, without the use of special tools such as a screwdriver, easy to install and disassemble. In the card fixing device 100, the plurality of fixing pieces 30 can be fixed by using only one crimping member 50, and the number of parts is small and the structure is simple.

In the card fixing device 100, the pressing portion 51 of the crimping member 50 presses the locking portion 33 of the fixing piece 30 under the elastic force of the elastic member 70 to prevent the fixing piece 30 from moving up and down.

The plurality of housing portions 1131 provided in the frame body 10 of the card fixing device 100 accommodate the insertion portion 35 of the fixing piece 30, and the insertion portion 35 is prevented from being lifted after the fixing piece 30 is fixed to the frame body 10.

In the card fixing device 100, the limiting piece 1111 on the top surface 111 of the bracket portion 11 of the frame body 10 blocks a fixing piece 30 adjacent to the limiting piece 1111, and prevents the locking portion 33 of the fixing piece 30 from being locked. The top surface 111 of the bracket portion 11 of the frame body 10 moves back and forth.

The elastic member 70 in the present invention may also be a tension spring, one end of which is connected to the top surface 111 of the bracket portion 11 of the frame body 10, and the other end of which is connected to the pressing portion 51 of the crimping member 50.

The pivot 90 of the present invention may also be a structure in which a screw cooperates with a nut.

In the clip elastic piece 55 of the present invention, the second angle between the connecting portion 551 and the holding portion 553 is not less than the first angle between the locking portion 33 of the fixing piece 30 and the blocking portion 31, and the connecting portion 551 is made. Firstly, the pressing portion 51 of the crimping member 50 is obliquely extended, and then the engaging portion 553 is bent at a certain angle with respect to the connecting portion 551, and finally the end of the holding portion 553 is crimped. The pressing portion 51 of the member 50 may be in the projection region of the extending direction of the retaining portion 31 of the fixing piece 30.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

100‧‧‧ card fixture

10‧‧‧ ‧ body

30‧‧‧Fixed tablets

50‧‧‧Crimping parts

70‧‧‧Flexible parts

90‧‧‧ pivot

11‧‧‧ bracket

13‧‧‧ Fixed Department

111‧‧‧ top surface

113‧‧‧Fixed surface

1111‧‧‧Limited blank

1131‧‧‧Receiving Department

131‧‧‧ side panels

1311‧‧‧Axis hole

1313‧‧‧Hook hole

31‧‧‧Banding Department

33‧‧‧Locking Department

35‧‧‧Interface

51‧‧‧Resistance Department

53‧‧‧ pivoting piece

55‧‧‧Snap snaps

531‧‧‧Pivot hole

533‧‧‧Fixed holes

551‧‧‧Connecting Department

553‧‧‧Keeping Department

555‧‧‧ Warpage Department

71‧‧‧ Reeds

73‧‧‧ first hook

75‧‧‧second hook

Claims (12)

A card fixing device includes a frame body, a fixing piece and a crimping piece mounted on the frame body, wherein the pressing piece comprises a pressing portion and a plurality of cards extending from the pressing portion and bent The latching piece includes a retaining portion and a latching portion, the retaining portion is bent relative to the latching portion, and the pressing portion of the crimping member is pressed against the latching portion of the fixing piece, and the snapping clip card is buckled Holding the locking portion, the locking elastic piece is inclined relative to the pressing portion to the fixing piece to a greater extent than the locking portion of the fixing piece is inclined with respect to the locking portion, and the snap elastic piece comprises a connection that is smoothly connected in sequence a portion, a holding portion and a warping portion, the connecting portion extending from the edge of the pressing portion and the pressing portion in a direction away from the fixing piece, the holding portion being close to the fixing from the end of the connecting portion The direction of the sheet is bent and extended, and the warped portion is bent and extended from the end of the holding portion in a direction away from the fixing piece, and the fixing portion is caught by the connecting portion of the holding portion and the warping portion. The card fixing device of claim 1, wherein the card fixing device further comprises an elastic member, the elastic member is connected to the frame body at one end, and the other end is connected to the crimping member, the crimping member is opposite to the frame The body is rotatable, and the elastic force of the elastic member causes the pressing portion of the crimping member to press the locking portion of the fixing piece. The card fixing device according to claim 2, wherein the elastic member is a torsion spring, one end of which is connected to the frame body, and the other end is connected to the crimping member. The card fixing device of claim 2, wherein the crimping member further comprises a pivoting piece formed at two ends of the pressing portion, the snap elastic piece being bent from an edge of the pressing portion, the pivot The tab is pivotally connected to the frame. A card fixing device comprising a frame body, a fixing piece and a crimping piece mounted on the frame body, wherein the pressing piece comprises a pressing portion and a plurality of snap tabs extending from the pressing portion The pressing portion can be pressed against one end of the fixing piece, and the snap spring piece is a bent structure when the card When the elastic piece is held by the fixing piece, the locking elastic piece is elastically deformed and applies an elastic clamping force to the fixing piece, and the locking elastic piece comprises a connecting portion, a holding portion and a warping portion which are smoothly connected in sequence, and the connection is made. The portion extends from the edge of the pressing portion to the pressing portion in a direction away from the fixing piece, and the holding portion is bent and extended from the end of the connecting portion in a direction close to the fixing piece, the warping portion being The end of the holding portion is bent and extended in a direction away from the fixing piece, and the fixing piece is caught by the connecting portion of the holding portion and the warping portion. The card fixing device of claim 5, wherein the fixing piece comprises a locking portion and a blocking portion that are relatively bent and connected, the locking portion and the blocking portion form a first angle, the holding portion The connecting portion is bent and forms a second angle therebetween, and the first angle is greater than a second angle between the latching portion of the clamping elastic piece and the connecting portion. The card fixing device of claim 6, wherein the card fixing device further comprises an elastic member, the elastic member is connected at one end to the frame body, and the other end is connected to the crimping member, the crimping member is opposite to the frame The body is rotatable, and the elastic force of the elastic member causes the pressing portion of the crimping member to press the locking portion of the fixing piece. The card fixing device of claim 7, wherein the elastic member is a torsion spring, one end of which is connected to the frame body, and the other end is connected to the crimping member. The card fixing device of claim 7, wherein the crimping member further comprises a pivoting piece formed at two ends of the pressing portion, the snap elastic piece being bent from an edge of the pressing portion, the pivot The tab is pivotally connected to the frame. A card fixing device includes a frame body, a fixing piece mounted on the frame body, and a crimping piece, the fixing piece includes a locking portion and a blocking portion extending from one end of the locking portion, the crimping member comprises The pressing portion is improved in that the crimping member further includes a retaining portion that is bent and extended from the edge of the pressing portion, and the pressing portion is pressed against the locking portion of the fixing piece, and the holding portion is slidable Holding the retaining portion of the fixing piece, the end of the holding portion is located in a projection area of the pressing portion along the extending direction of the retaining portion of the fixing piece, and the snap elastic piece comprises a connecting portion and a card which are smoothly connected in sequence Holding and warping The connecting portion extends from the edge of the pressing portion to the pressing portion in a direction away from the fixing piece, and the holding portion is bent and extended from the end of the connecting portion toward the fixing piece. The curved portion is bent and extended from the end of the holding portion away from the fixing piece, and the fixing piece is caught by the connecting portion of the holding portion and the warping portion. The card fixing device of claim 10, wherein the card fixing device further comprises an elastic member, the elastic member is connected at one end to the frame body, and the other end is connected to the crimping member, the crimping member is opposite to the frame The body is rotatable, and the elastic force of the elastic member causes the pressing portion of the crimping member to press the locking portion of the fixing piece. The card fixing device of claim 11, wherein the elastic member is a torsion spring, one end of which is connected to the frame body, and the other end is connected to the crimping member.