CN102469737B - Circuit Board Fixture - Google Patents

Abstract

A circuit board fixing device is used for positioning a circuit board behind a shell and comprises a circuit board and a fastener, wherein the fastener comprises at least one clamping hook piece, at least one fixing piece and at least one elastic piece, the clamping hook piece is connected with the top end of the fixing piece, a first clamping hook is arranged on the surface, facing the fixing piece, of the clamping hook piece, the fixing piece is connected with the bottom end of the elastic piece, a second clamping hook is arranged on the surface, facing away from the fixing piece, of the elastic piece, the second clamping hook protrudes out of the elastic piece, the clamping hook piece and the fixing piece are arranged on the top edge of the circuit board in a spanning mode, the first clamping hook is hooked on a clamping portion of the circuit board, the elastic piece faces the shell, and the second clamping hook is hooked on the bottom surface of the top edge of the shell.

Description

Circuit Board Fixture

technical field

The invention relates to a device for fixing a circuit board, in particular to a fixing structure with simple structure, convenient installation, good holding effect on the circuit board, and improved convenience for disassembling the circuit board.

Background technique

A general server (server) has a central circuit board (Middle Plane) between its hard disk case (HDD cage) and the motherboard (Mother Board, MB), as a referral board between the motherboard and the hard disk, and there are multiple connectors on it , which can be plugged into the hard disk to achieve electrical connection. Therefore, the central circuit board is mostly perpendicular to the server base and fixed behind the hard disk casing.

As for the connection between the central circuit board and the main board, you can use a board-to-board connector (BTB connector) for docking, or use a cable to connect the connector on the central circuit board and the main board, or you can rely on the golden finger (Golden Finger) and the connector. connect. Regardless of how the central circuit board is connected to the main board. The premise is that the central circuit board must be firmly fixed behind the hard disk case.

Most of the existing fixed structures are provided with buckles on the hard disk casing. When the central circuit board is installed, the buckle can be elastically retreated by virtue of the bevel structure of the buckle, and the central circuit board can reach After the predetermined position, the card will be automatically snapped. Since the central circuit board spans the entire width of the server, usually two to three clips must be installed to maintain the stability of the central circuit board. Therefore, when the central circuit board is to be removed, use The operator must operate the clips one by one to release the central circuit board, which is not only inconvenient to operate but also takes a lot of time.

Contents of the invention

In view of the deficiency in the prior art, the present invention proposes a circuit board fixing device, which has a simple structure, is easy to install, has a good holding effect on the circuit board, and can improve the convenience of disassembling the circuit board.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A circuit board fixing device is used to position the circuit board at the rear of a casing, the casing has a slot at the rear, and it is characterized in that the circuit board fixing device includes:

A circuit board, which has an opposite top edge and a bottom edge, the circuit board is provided with at least one engaging portion, and the circuit board is inserted into the slot at the rear of the casing; and

A clip, which includes at least one hook piece, at least one fixing piece and at least one elastic piece, the hook piece is connected to the top of the fixing piece, and a first hook is provided on the surface facing the fixing piece. A hook, the fixing part is connected to the bottom of the elastic part, the surface of the elastic part facing away from the fixing part is provided with a second hook, the second hook protrudes from the elastic part, the hook part and the The fixing part straddles the top edge of the circuit board, the first hook is engaged with the engaging portion of the circuit board, the elastic member faces the casing, and the second hook is hooked on the top edge of the casing the underside.

Wherein: the top of the hook part is provided with a flange, and the flange protrudes from the surface of the hook part facing away from the fixing part.

Wherein: the flange is a first piece formed by extending from the top of the hook, and an included angle of 90 degrees is formed between the first piece and the hook.

Wherein: a pushing part is provided on the top of the elastic part, and the pushing part is used to bear an external force, and the external force is used to push the elastic part to move toward the fixing part, and make the second hook disengage from the bottom surface of the top edge of the casing.

Wherein: the push part is a second piece formed by extending from the top of the elastic piece, the angle between the second piece and the elastic piece is 90 degrees, and the second piece protrudes from the elastic piece facing face of the fixture.

Wherein: the top edge of the circuit board is provided with at least one recess, the engaging portion is the bottom edge of the circuit board, the connecting part of the hook part and the top of the fixing part is engaged in the recess, and the first hook is engaged in the bottom edge of the circuit board.

Wherein: the bottom edge of the circuit board is provided with a card slot, and the card slot serves as the engaging part.

Wherein: the circuit board is provided with a hollow portion, the hollow portion runs through the circuit board, and the hollow portion serves as the engaging portion.

Wherein: the clip has two hook parts, two fixing parts and two elastic parts, and the top ends of the two hook parts and the two fixing parts are connected to each other by a first connecting rod, and the first connecting rod It has an extended length, and the first connecting rod has two opposite sides along its length direction, the two hook parts are arranged on one side of the first connecting rod, and the two fixing parts are arranged On the other side of the first connecting rod, the two elastic members are respectively connected to a fixing member, and the top ends of the two elastic members are connected to each other by means of a second connecting rod, the second connecting rod has an extended length, the The length extension directions of the first connecting rod and the second connecting rod are parallel to each other.

Wherein: there is a first distance between the two hook parts, a second distance between the two fixing parts, and the first distance is not equal to the second distance.

Compared with the prior art, the invention has the beneficial effects of simple structure, convenient installation, good holding effect on the circuit board, and improved convenience of circuit board disassembly.

Description of drawings

Fig. 1 is a schematic diagram of an exploded structure of a first embodiment of the present invention;

Fig. 2 is another three-dimensional structural view of the first embodiment of the clip of the present invention;

Fig. 3 is a combined structure schematic diagram of the first embodiment of the present invention;

FIG. 4 and FIG. 5 are schematic cross-sectional structural diagrams of the cross-sectional structure in FIG. 3A-A with the hard disk casing;

Figure 6 and Figure 7 are schematic diagrams of disassembling the first embodiment of the present invention;

Fig. 8 is a schematic diagram of an exploded structure of a second embodiment of the present invention;

Fig. 9 is another three-dimensional structural view of the second embodiment of the clip of the present invention;

Fig. 10 is a schematic view of the combined structure of the second embodiment of the present invention.

Explanation of reference signs: 10-clamp; 11-hook; 111-first hook; 112-first body; 12-fixing piece; 13-elastic piece; 131-second hook; Two pieces; 133-arrow mark; 134-arc recess; 20-circuit board; 21-top edge; 211-recess; 22-bottom edge; 221-card slot; 23-connector; 30-server base; 40 -hard disk casing; 41-space; 42-slot; 51, 52-finger; 60-clip; 61-hook; 611-first hook; The second hook; 64-first connecting rod; 641,642-side; 65-second connecting rod; 651-arrow mark; 70-circuit board; 71-top edge; 711-recess; 72-bottom edge; 721-through-hole; 73-connector; D1-first distance; D2-second distance; F1-first direction; F2-second direction; W1-first distance; W2-second distance.

Detailed ways

The technical means and effects used by the present invention to achieve the purpose will be described below with reference to the attached drawings, and the embodiments listed in the following drawings are only for auxiliary explanation, so as to facilitate the understanding of the review committee, but the technical means of this case are not Not limited to the listed drawings.

Please refer to the first embodiment of the circuit board fixing device provided by the present invention shown in Fig. 1, which includes a clip 10, the clip 10 is used for assembling with a vertically arranged circuit board 20, and the circuit board 20 has an opposite The top edge 21 and a bottom edge 22 are provided with a concave portion 211 on the top edge 21, a card slot 221 is provided on the bottom edge 22, and a plurality of connectors 23 are provided on one side of the circuit board 20, and the circuit board 20 can be a central circuit Board (Middle Plane), this type of central circuit board is usually arranged perpendicular to the server base, and is fixed behind a hard disk (HDD) casing. Set up an electrical connection.

Please refer to Fig. 1 and Fig. 2, the clasp 10 includes a hook part 11, a fixing part 12 and an elastic part 13, the hook part 11, the fixing part 12 and the elastic part 13 are all rectangular in shape. Sheet body, the height of the elongated sheet body is greater than its width, and the hook piece 11, the fixing piece 12 and the elastic piece 13 are arranged parallel to each other, the hook piece 11 is connected to the top of the fixing piece 12, and the hook piece 11 is connected to the fixing piece. There is a first distance W1 between the parts 12, the first distance W1 is equivalent to the thickness of the matched circuit board 20, a first hook 111 is provided on the surface of the hook part 11 facing the fixing part 12, and secondly, The bottom ends of the fixing part 12 and the elastic part 13 are connected to each other, there is a second distance W2 between the fixing part 12 and the elastic part 13, and a flat rectangular first piece 112 extending transversely on the top of the hook part 11, The angle between the first piece 112 and the hook member 11 is 90 degrees. Secondly, a second hook 131 is provided on the surface of the elastic member 13 facing away from the fixing member 12, and the second hook 131 protrudes from the elastic member. 13. Furthermore, the top of the elastic member 13 extends laterally to form a second sheet 132, the second sheet 132 protrudes from the surface of the elastic member 13 facing the fixed member 12, and there is also a gap between the second sheet 132 and the elastic member 13. About a ninety-degree angle.

Please refer to FIG. 1, FIG. 3 and FIG. 4, the clip 10 is engaged with the circuit board 20, the hook member 11 and the fixing member 12 are arranged in the recess 211 of the top edge 21 of the circuit board 20, and the first hook 111 can be hooked into the slot 221 of the bottom edge 22 of the circuit board 20, so that the clip 10 and the circuit board 20 can be firmly combined into one body. It must be noted that when the clip 10 is engaged, the elastic part of the clip 10 must be 13 is located on the side of the circuit board 20 where the connector 23 is located. In order to improve the correctness of assembling the clip 10, an arrow mark 133 can be provided on the top of the second sheet 132 to indicate the force applied by the user and the installation direction.

Please refer to Fig. 4 and shown in Fig. 5, be provided with a hard disk case 40 on the server base 30, this hard disk case 40 has a space 41, and this space 41 is used for accommodating hard disk (not shown in the figure) along a The hard disk casing 40 is inserted into the first direction F1, and a slot 42 is provided at one end of the hard disk casing 40. The slot 42 has an insertion direction parallel to a second direction F2, and the clips 10 that are engaged with each other as a whole Insert the circuit board 20 into the slot 42 along the second direction F2, and the side of the circuit board 20 provided with the connector 23 faces the hard disk casing 40, that is, the second hook 131 of the elastic member 13 can face the hard disk casing 40, Therefore, when the circuit board 20 is inserted into the slot 41, the second hook 131 can be engaged with the bottom surface of the top edge of the hard disk casing 40, and the second piece 132 at the top of the elastic member 13 protrudes from the top of the hard disk casing 40. , the movement of the circuit board 20 in the horizontal direction (that is, parallel to the first direction F1) can be restricted by means of the slot 42, and the vertical direction of the circuit board 20 can be restricted by virtue of the second hook 131 hooked on the bottom surface of the top edge of the hard disk casing 40 (that is, the movement parallel to the second direction F2), as shown in FIG. 5 .

Please refer to Fig. 6 and Fig. 7, when wanting to take out the circuit board 20 from the server base 30, the user uses a finger (for example index finger) 51 to push the second sheet 132 at the top of the elastic member 13, and the elastic member 13 can be pushed toward The fixing part 12 moves, and makes the second hook 131 detach from the bottom surface of the top edge of the hard disk casing 40. From this, it can be seen that the engagement depth of the second hook 131 and the hard disk casing 40 must be smaller than that of the fixing part 12 and the elastic part 13. At the same time, the user uses another finger (such as a thumb) 52 to abut against the bottom of the first sheet 112 to pull the clip 10 together with the circuit board 20 out of the server base 30 .

Please refer to Fig. 1 and Fig. 6, it must be emphasized that the function of the first piece 112 is to provide the user's finger 52 to lean against, and to increase the frictional force when the clip 10 is pulled upwards. Accordingly, the first The sheet body 112 can be designed as a flange in other forms, and the flange protrudes from the surface of the hook member 11 facing away from the fixing member 12, and the shape of the first sheet body 112 is not limited. In addition, as shown in FIG. 1 As shown, the width of the elastic member 13 above the second hook 131 is wider, and extends out the second sheet 132 of the same width, and an arc-shaped concave portion 134 is provided at the intersection of the upper part of the elastic member 13 and the second sheet 132 , its function is to provide a larger contact area and a pushing part that conforms to the arc of the finger 51. Accordingly, the second piece 132 can be designed as another form of pushing part, which is not limited to the illustrated embodiment, which is beneficial for the user to operate and push. Yes, in addition, when the size of the clip 10 and the circuit board 20 match each other, the clip 10 can be directly engaged with the top edge 21 and the bottom edge 22 of the circuit board 20. As for the top edge 21 of the circuit board 20 in this embodiment The concave portion 211 of the circuit board 20 and the slot 221 on the bottom edge 22 of the circuit board 20 are used to limit the displacement of the clip 10, prevent the clip 10 from slipping on the edge of the circuit board 20, and also reduce the volume of the clip 10. The concave portion 211 and the slot 221 is located at about the central part of the circuit board 20, so as to improve the balance of force applied when the circuit board 20 is extracted. Accordingly, the recess 211 and the slot 221 can be engaged with other parts of the circuit board 20 that can provide the same effect. Instead, for example, the edge structure of the circuit board 20 itself.

Please refer to the second embodiment of the circuit board fixing device provided by the present invention shown in FIG. 8, which includes a clip 60, which is used for assembling with a vertically arranged circuit board 70. This embodiment is implemented in accordance with FIG. The difference of the example is that the circuit board 20 of Fig. 1 is only provided with two connectors 23, and the circuit board 70 of this embodiment is provided with six connectors 73, and the area of the circuit board 70 is relatively large, therefore, the matching clip 60 patterns are also different.

Please refer to FIG. 8 and FIG. 9 , the clip 60 has two hook parts 61 , two fixing parts 62 and two elastic parts 63 , there is a first distance W1 between the hook parts 61 and the fixing parts 62 , A first hook 611 is provided on the surface of the hook piece 61 facing the fixing piece 62, and the tops of the two hook pieces 61 and the two fixing pieces 62 are connected to each other by a first connecting rod 64, and the first connecting rod 64 It has an extended length, and the first connecting rod 64 has two opposite sides 641, 642 along the two sides of its length direction, two hook members 61 are arranged on one side 641 of the first connecting rod 64, and There is a first distance D1 between the hook pieces 61, and the two fixing pieces 62 are arranged on the other side 62 of the first connecting rod 64. There is a second distance D2 between the two fixing pieces 62, and the first distance D1 Not equal to the second distance D2, the bottom ends of the two elastic pieces 63 are respectively connected to the bottom ends of a fixing piece 62, and the surface of the two elastic pieces 63 facing away from the fixing piece 62 is provided with a second hook 631, and the fixing piece 62 There is a second distance W2 between the elastic member 63, and the top ends of the two elastic members 63 are connected to each other by means of a second connecting rod 65, the second connecting rod 65 has an extended length, the first connecting rod 64 and the second connecting rod The length extension directions of the rods 65 are parallel to each other. The top edge 71 of the circuit board 70 of this embodiment is provided with two recesses 711 corresponding to the positions of the two hooks 61, and the position of the circuit board 70 corresponding to the two first hooks 611 is provided with a hollow part 721, the hollow The portion 721 penetrates the circuit board 70 .

Please refer to FIG. 8 and FIG. 10, the clip 60 is engaged with the circuit board 70, the hook member 61 and the fixing member 62 are straddled in the concave portion 711 of the top edge 71 of the circuit board 70, and the first hook 611 can be hooked. Fit the hollow part 721 so that the clip 60 and the circuit board 70 are firmly combined into one body. Similarly, when the clip 60 is engaged, the elastic member 63 of the clip 60 must be positioned at the position where the circuit board 70 is provided with the connector 73 On one side, an arrow mark 651 is provided on the top of the second connecting rod 65 to indicate the user's force application and installation direction. In this embodiment, the method of operating the clip 60 to insert the circuit board 70 into the server base or take it out from the server base is the same as that shown in FIGS. Since the two elastic parts 63 are connected by the second connecting rod 65, the second connecting rod 65 is equivalent to the second piece 132 in Figure 1, when the second connecting rod 65 is pushed, the two elastic parts 63 can be driven towards the fixed part synchronously. 62 moves, so the two second hooks 631 can break away from the bottom surface of the top edge of the hard disk casing 40 at the same time, and its state is the same as that of the second hook 131 shown in FIG.

To sum up, the circuit board fixing device provided by the present invention has an integrated clip design, which not only has a simple structure and is easy to install, but also has a good holding effect on the circuit board, and can improve the convenience of disassembling the circuit board. For the circuit board, the present invention can adopt a single clip (the embodiment shown in Figure 1), and for larger circuit boards, the present invention can adopt a parallel clip (the embodiment shown in Figure 8), except for the arrangement shown in Figure 8 In addition to the structure of two sets of hooks, more than two sets of hooks can also be designed as required. .

The above description is only illustrative of the present invention, rather than restrictive. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims, but All will fall within the protection scope of the present invention.

Claims (10)

1. A circuit board fixing device for positioning the circuit board at the rear of a casing, the casing rear has a slot, it is characterized in that the circuit board fixing device comprises: A circuit board, which has an opposite top edge and a bottom edge, the circuit board is provided with at least one engaging portion, and the circuit board is inserted into the slot at the rear of the casing; and A clip, which includes at least one hook piece, at least one fixing piece and at least one elastic piece, the hook piece is connected to the top of the fixing piece, and a first hook is provided on the surface facing the fixing piece. A hook, the fixing part is connected to the bottom of the elastic part, the surface of the elastic part facing away from the fixing part is provided with a second hook, the second hook protrudes from the elastic part, the hook part and the The fixing part straddles the top edge of the circuit board, the first hook is engaged with the engaging portion of the circuit board, the elastic member faces the casing, and the second hook is hooked on the top edge of the casing the underside. 2 . The circuit board fixing device according to claim 1 , wherein a flange is provided on a top of the hook member, and the flange protrudes from a surface of the hook member facing away from the fixing member. 3 . 3. The circuit board fixing device according to claim 2, characterized in that: the flange is a first sheet formed by extending from the top of the hook member, and the distance between the first sheet and the hook member is 90°. degree angle. 4. The circuit board fixing device according to claim 1, wherein a pushing portion is provided on the top of the elastic member, the pushing portion is used to bear an external force, and the external force is used to push the elastic member to move toward the fixing member, And make the second hook disengage from the bottom surface of the top edge of the casing. 5. The circuit board fixing device according to claim 4, characterized in that: the pushing part is a second sheet formed by extending from the top of the elastic member, and the angle between the second sheet and the elastic member is 90 degrees angle, and the second sheet protrudes from the surface of the elastic member facing the fixing member. 6. The circuit board fixing device according to claim 1, characterized in that: the top edge of the circuit board is provided with at least one concave portion, the engaging portion is the bottom edge of the circuit board, the hook part and the top end of the fixing part The connecting portion is engaged with the concave portion, and the first hook is engaged with the bottom edge of the circuit board. 7 . The circuit board fixing device according to claim 1 , wherein a bottom edge of the circuit board is provided with a locking groove, and the locking groove serves as the locking portion. 8 . 8 . The circuit board fixing device according to claim 1 , wherein the circuit board is provided with a hollow portion, the hollow portion penetrates the circuit board, and the hollow portion serves as the engaging portion. 9. The circuit board fixing device according to claim 1, wherein the clip has two hook parts, two fixing parts and two elastic parts, and the two hook parts and the two fixing parts The top ends of the first connecting rod are connected to each other by means of a first connecting rod, the first connecting rod has an extended length, and the two sides of the first connecting rod along its length direction have two opposite sides, and the two hook parts are arranged on On one side of the first connecting rod, the two fixing parts are arranged on the other side of the first connecting rod, the two elastic parts are respectively connected to a fixing part, and the top ends of the two elastic parts rely on a second The connecting rods are connected with each other, the second connecting rod has an extending length, and the extending directions of the first connecting rod and the second connecting rod are parallel to each other. 10. The circuit board fixing device according to claim 9, wherein there is a first distance between the two hooks, a second distance between the two fixing parts, and the first distance is not equal to the second distance.