TW202312827A - Fixing structure for circuit board - Google Patents

Abstract

A fixing structure for circuit board includes a buckle bump and a fixing piece. The buckle bump is formed by protruding a buckle area of a casing toward a convex direction, and has a buckle edge. An insertion opening is formed between the buckle edge and the casing. The buckle bump defines a concave edge from the edge of the buckle toward an insertion direction. The fixing piece includes a locking section, a supporting and fixing section, a connecting section and a engaging section in sequence along a locking direction. The locking section has a locking hole opened along the locking direction for a locking member to fix a circuit board. The supporting and fixing section is connected to the locking section. The connecting section is connected to the supporting and fixing section for inserting into the concave edge along the insertion direction. The engaging section is fixedly connected to the connecting section, and is used to clamp the buckle bump with the supporting and fixing section after the connecting section is inserted into the concave edge.

Description

Circuit board fixing structure

The invention relates to a circuit board fixing structure, in particular to a circuit board fixing structure for assembling a circuit board in a case.

Please refer to the first figure. The first figure is a three-dimensional exploded schematic view showing the prior art circuit board locked to the server casing through the locking support structure. As shown in the first figure, a server casing PA1 is provided with a locking support structure PA2, which is used to lock a locking hole PA31 of the circuit board PA3 when a circuit board PA3 is installed on the server casing PA1. For locking support structure PA2.

Please continue to refer to the second figure. The second figure is a three-dimensional exploded schematic view showing that the server casing of the prior art is provided with another locking support structure for installing another circuit board. As shown in Figure 1 and Figure 2, generally speaking, the size of the server enclosure PA1 is not likely to change, but the specifications of the circuit board PA3 are often changed in size in response to new technologies, specifications or design changes. For example, the size of the circuit board PA3a of another specification is different from that of the circuit board PA3. Although the size of the circuit board PA3a is limited in order to be commonly used in the server case PA1, the circuit board PA3a The position of the key hole PA31a often needs to be changed to match the optimized circuit design, so the key hole PA31a of the circuit board PA3a often cannot be shared with the locking support structure PA2 provided by the server case PA1 for the circuit board PA3.

Based on the above, in order to allow the circuit board PA3a to be installed in the server case PA1, another locking support structure PA2a is usually installed on the existing server case PA1, so that the keyhole PA31a of the circuit board PA3a can be Correspondingly locked to the locking support structure PA2a. Among them, the locking support structure PA2a is a support column (standoff), but another locking support structure PA11 can also be used, and the locking support structure PA11 is an anthill structure (anthill). In practice, the support column and the anthill structure The only difference is that the support column is additionally locked and combined with the server case PA1, and the anthill structure is an integrated structure punched out of the server case PA1 through a stamping process.

Please continue to refer to Figures 3 and 4. Figure 3 is a three-dimensional exploded schematic view showing that the server casing of the prior art has another locking support structure and cannot install the original circuit board; Figure 4 is the schematic diagram of Figure 3 A-A cross-sectional schematic diagram of the figure. As shown in Figures 1 to 4, when the server casing PA1 is used to meet the needs of users who need to assemble the circuit boards PA3 and PA3a at the same time, the locking support structures PA2 and PA2a are usually installed on the server at the same time. The casing PA1 is for users to selectively disassemble and assemble. However, since the specifications and dimensions of the server casing PA1 remain unchanged, in practice, it often happens that the user does not lock the support structure PA2a from the server casing PA1. In the case of dismantling the circuit board PA3 to be installed in the server casing PA1, the circuit board PA3 will directly collide with the locking support structure PA2a at the position corresponding to the locking support structure PA2a, and the circuit board PA3 is not The area where the lock hole PA31 is provided is usually provided with other electronic components, so when the circuit board PA3 is to be installed on the server case PA1 with the locking support structure PA2a, it is easy to cause the electronic components on the circuit board PA3 to be damaged. It may be damaged due to collision, or even the circuit board PA3 may be deformed and damaged due to the mismatch of dimensions.

In view of the prior art, in order to install circuit boards of different specifications, the existing server casings are usually equipped with fixed support structures in response to different installation positions. However, when the user does not adjust the fixed support structures for the circuit boards to be installed When the location and quantity of the circuit board are different, it is very likely that the circuit board will collide with the non-corresponding fixed support structure when it is installed, and the parts on the circuit board will be damaged, or the circuit board will be deformed; therefore, the main purpose of the present invention The purpose is to provide a circuit board fixing structure, which can be used for circuit boards with different locking positions together with the existing fixed support structure, so as to fix the circuit boards to the casing according to the corresponding locking positions of the circuit boards, and avoid the circuit board The electronic components are over-extruded and the electronic components are damaged or the circuit board is deformed.

In order to solve the problems of the prior art, the necessary technical means adopted by the present invention is to provide a circuit board fixing structure, which is used to fix a circuit board to a casing. The circuit board fixing structure includes a buckle boss and a fixing pieces.

The buckle boss is formed by protruding one of the buckle areas of the casing toward a raised direction, forming a buckle space on an outer surface of the casing facing away from the raised direction, with a buckle edge, and buckle An insertion opening is formed between the edge and the casing, and a concave edge is formed on the buckle boss along an insertion direction from the buckle edge.

The fixing part sequentially includes a locking section, a supporting and fixing section, a connecting section and an engaging section along a locking direction. The locking section has a locking hole opened along the locking direction for a locking piece to pass through the circuit board along the locking direction and fix the locking piece so as to fix the circuit board.

The supporting and fixing section is fixedly connected to the locking section, and the maximum distance between the center and the edge of the supporting and fixing section is greater than the radius of one of the locking sections of the locking section. The connecting section is fixedly connected to the supporting and fixing section for inserting into the concave edge along the inserting direction. The engaging section is fixedly connected to the connecting section, and is used for clamping the buckle boss with the supporting fixed section after the connecting section is inserted into the concave edge.

In an auxiliary technical means derived from the above necessary technical means, the supporting and fixing section has two sides parallel to each other.

In an auxiliary technical means derived from the above necessary technical means, the connecting segment has a connecting segment radius, and the connecting segment radius is smaller than the maximum distance. Preferably, the engaging section has a radius of the engaging section, and the radius of the engaging section is greater than the radius of the connecting section.

In an auxiliary technical means derived from the above necessary technical means, the concave edge has a concave edge depth along the insertion direction, and the concave edge depth is greater than the diameter of the connecting section.

In an auxiliary technical means derived from the above necessary technical means, the engaging section has a tapered peripheral surface, and the tapered peripheral surface is tapered from bottom to top.

In an auxiliary technical means derived from the above necessary technical means, the locking hole is a screw hole.

In a subsidiary technical means derived from the above necessary technical means, the supporting and fixing section is integrally connected to the locking section, the connecting section is integrally connected to the supporting and fixing section, and the engaging section is integrally formed connected to the link segment.

The circuit board fixing structure of the present invention mainly utilizes the cooperation between the buckle boss and the fixing part, so that when the lock hole of the circuit board does not fit the casing, the buckle boss arranged on the circuit board will not touch the circuit board. When the lock hole of the circuit board corresponds to the buckle boss, the fixing piece of the present invention can be locked at the lock hole, so that the circuit board can be fixed through the cooperation of the fixing piece and the buckle boss. Fixing the circuit board to the casing can effectively increase the flexibility during assembly, and can effectively prevent the circuit board from being damaged due to non-compliant specifications.

The specific embodiments adopted by the present invention will be further described by the following embodiments and drawings.

Please refer to the fifth figure to the ninth figure, the fifth figure is a three-dimensional exploded schematic diagram showing the circuit board fixing structure of the present invention for fixing the circuit board to the casing; the sixth figure is a three-dimensional schematic diagram after assembly of the fifth figure; Figure 7 is a schematic plan view of the buckle boss of the present invention arranged on the casing; Figure 8 is a schematic cross-sectional view of B-B in Figure 6; Figure 9 is a schematic cross-sectional exploded view of Figure 8.

As shown in FIGS. 5 to 7 , a circuit board fixing structure 100 is used to fix a circuit board 200 to a case 300 .

The circuit board fixing structure 100 includes a locking boss 1 and a fixing member 2 . The buckle boss 1 is formed by protruding a buckle area SA of the casing 300 toward a raised direction D1, and forms a buckled space SS on the outer surface of the casing 300 facing away from the raised direction D1 (marked in No. Nine Figures). In addition, the buckle boss 1 has a buckle edge 11, an insertion opening IO is formed between the buckle edge 11 and the casing 300, and the buckle boss 1 is further opened from the buckle edge 11 along an insertion direction D2. A bezel 111, and the bezel 111 has a bezel depth d1 in this embodiment.

Please continue to refer to the tenth figure, which is a schematic cross-sectional view of the fixing member of the present invention. As shown in the fifth figure to the tenth figure. The fixing part 2 sequentially includes a locking section 21 , a supporting and fixing section 22 , a connecting section 23 and an engaging section 24 along a locking direction D3 .

The locking section 21 has a locking hole 211 opened along the locking direction D3 for a locking member 400 to pass through the locking hole 201 of the circuit board 200 along the locking direction D3 to fix the locking member 400, so that the fixing member 2 fixed on the circuit board 200 . Wherein, the locking section 21 is a cylinder in this embodiment, the locking hole 211 is a screw hole, and the locking section 21 has a locking section radius d2.

The supporting and fixing section 22 is integrally formed and fixed to the locking section 21 . Wherein, the supporting and fixing section 22 is a type of elliptical sheet body in this embodiment, and more specifically, the supporting and fixing section 22 of the present embodiment is to cut out two mutually parallel side surfaces 221 ( Only one is marked in the figure) The oval-shaped flakes formed. In addition, the maximum distance d3 between the center and the edge of the supporting and fixing section 22 is larger than the locking section radius d2 of the locking section 21 .

The connecting section 23 is integrally fixed to the supporting and fixing section 22 for being inserted into the concave edge 111 along the inserting direction D2. Wherein, the connection section 23 is also a cylinder in this embodiment, and the connection section 23 has a connection section radius d4, which is smaller than the maximum distance d3 between the center and the edge of the above-mentioned supporting and fixing section 22 . In addition, the diameter of the connecting section 23 (ie twice the radius d4 of the connecting section) is smaller than the above-mentioned depth d1 of the bezel.

The engaging section 24 is fixedly connected to the connecting section 23 for clamping the buckle boss 1 with the supporting and fixing section 22 after the connecting section 23 is inserted into the concave edge 111 . Wherein, the engaging section 24 has a radius d5 of the engaging section, and the radius d5 of the engaging section is greater than the radius d4 of the connecting section. In addition, the engaging section 24 also has a tapered peripheral surface 241 that tapers from bottom to top.

Please continue to refer to the eleventh figure to the twelfth figure. The eleventh figure is a schematic cross-sectional view of the fixing member of the present invention locked to the circuit board through the locking member; the twelfth figure is the fixing member of the present invention behind the circuit board , a schematic cross-sectional view placed in the insertion opening.

As shown in the fifth figure to the twelfth figure, in practical application, the user can first pass the locking section 21 of the fixing member 2 through the locking hole 201 of the circuit board 200, and then use the locking member 400 to make the circuit board 200 face each other. Lock the locking hole 211 of the locking section 21 on the other side of the fixing piece 2, so as to fix the fixing piece 2 on the circuit board 200; wherein, since the supporting fixing section 22 of this embodiment has two parallel sides 221, Therefore, the user can use the clamping tool to clamp the two side surfaces 221 to rotate the fixed part of the fixing part 2 , and then the user can rotate the locking part 400 relative to the fixing part 2 to lock into the locking hole 211 .

Next, align the fixing part 2 with the insertion opening IO, and move the circuit board 200 together with the fixing part 2 along the locking direction D3, so that the fixing part 2 can be placed in front of the insertion opening IO and attached to the surface of the circuit board 200 .

Finally, move the circuit board 200 along the insertion direction D2, so that the fixing member 2 can pass through the insertion opening 10 along the insertion direction D2 and be inserted into the buckle boss 1. At this time, the connecting section 23 will go deep into the concave edge 111, and The engaging section 24 will go deep into the buckling space SS, and the supporting and fixing section 22 will be located on the other side of the buckling boss 1 relative to the engaging section 24, so that the supporting and fixing section 22 and the engaging section 24 are opposite to each other. Clamp and hold the buckle boss 1. Wherein, since the engagement section 24 of this embodiment further has a tapered peripheral surface 241, when the fixing member 2 moves along the insertion direction D2, the contact between the tapered peripheral surface 241 and the buckle boss 1 can further The guiding engaging section 24 goes deep into the engaging space SS.

Please refer to the thirteenth figure. The thirteenth figure is a schematic cross-sectional view showing that when another circuit board is locked in the casing, the electronic components arranged on the circuit board will not touch the buckle boss. As shown in the thirteenth figure, when another circuit board 200a having a size different from that of the circuit board 200 is to be installed and fixed on the casing 300, since the locking hole 201a of the circuit board 200a does not correspond to the buckle boss 1, it is necessary to Through the original locking support structure 500, the lock hole 201a is fixed on the circuit board 200a through the lock piece 400a, so the position of the circuit board 200a corresponding to the buckle boss 1 is usually provided with electronic components because there is no need to set the lock hole 202a, at this time, the buckle boss 1 of the present invention does not directly contact the circuit board 200a to provide support, so that the buckle boss 1 and the circuit board 200a are spaced apart from each other, so the electronic component 202a is installed on the circuit board 200a When the casing 300 is in place, it will not be contacted and bumped by the buckle boss 1 .

In addition, even if the size of the electronic component 202a is large enough to contact the buckle boss 1 , the degree of stretching and deformation of the circuit board 200a can be effectively reduced due to the low height design of the buckle boss 1 .

To sum up, compared with the prior art, the server casing is equipped with fixed support structures for the installation of circuit boards of different specifications, but it is possible that the multiple fixed support structures do not match the specifications of the original circuit boards, resulting in The original circuit board may cause damage to the parts on the circuit board, or cause the circuit board to be deformed; the circuit board fixing structure of the present invention mainly uses the cooperation of the buckle boss and the fixing part, so that the lock hole of the circuit board is in line with the machine. When the shell is not fit, the buckle boss provided on the circuit board will not touch the electronic components on the circuit board, and when the lock hole of the circuit board corresponds to the buckle boss, it can be locked at the lock hole The fixing part of the present invention enables the circuit board to be fixed to the casing through the cooperation of the fixing part and the buckle boss, effectively increases the flexibility during assembly, and can effectively prevent the circuit board from being damaged due to non-compliant specifications. .

In one embodiment of the present invention, the casing applied to the circuit board fixing structure of the present invention is a server casing, and the server can be used for artificial intelligence (English: Artificial Intelligence, referred to as AI) computing, edge computing ( Edge Computing) can also be used as a 5G server, cloud server or Internet of Vehicles server.

Through the above detailed description of the preferred embodiments, it is hoped that the characteristics and spirit of the present invention can be described more clearly, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the intention is to cover various changes and equivalent arrangements within the scope of the patent application for the present invention.

PA1: Server enclosure PA2: Lock support structure PA3, PA3a: circuit board PA31, PA31a: Keyhole PA11, PA2a: locking support structure 100: circuit board fixing structure 1: Buckle boss 11: Snap edge 111: concave edge 2: Fixing parts 21: Locking section 211: locking hole 22: Support fixed section 221: side 23: link segment 24: snap section 241: Tapered peripheral surface 200,200a: circuit board 201,201a: Keyhole 202a: Electronic components 300: Chassis 400,400a: Locking piece 500: Lock support structure D1: convex direction D2: Insertion direction D3: Locking direction d1: Depth of concave edge d2: Radius of locking section d3: maximum distance d4: Radius of connecting segment d5: Radius of engaging section SA: Buckle area SS: Buckle space IO: Insertion opening

The first figure is a three-dimensional exploded schematic view showing that the circuit board in the prior art is locked to the server casing through the locking support structure; The second figure is a three-dimensional exploded schematic diagram showing another locking support structure for installing another circuit board in the server case of the prior art; The third figure is a three-dimensional exploded schematic view showing that the server case of the prior art is equipped with another locking support structure and cannot be installed with the original circuit board; Figure 4 is a schematic cross-sectional view of A-A in Figure 3; The fifth figure is a three-dimensional exploded view showing the circuit board fixing structure of the present invention for fixing the circuit board to the casing; Figure 6 is a three-dimensional schematic diagram of Figure 5 after assembly; The seventh figure is a schematic plan view of the buckle boss of the present invention arranged on the casing; The eighth figure is a schematic diagram of the B-B section of the sixth figure; Figure 9 is an exploded cross-sectional schematic diagram of Figure 8; Figure 10 is a schematic cross-sectional view of the fixture of the present invention; Figure 11 is a schematic cross-sectional view of the fixing member of the present invention being locked to the circuit board through the locking member; The twelfth figure is a schematic cross-sectional view of the fixing member of the present invention placed in the insertion opening after being fixed on the circuit board; and The thirteenth figure is a schematic cross-sectional view showing that when another circuit board is locked in the casing, the electronic components arranged on the circuit board will not touch the buckle boss.

100: circuit board fixing structure

1: Buckle boss

2: Fixing parts

200: circuit board

300: Chassis

400: lock piece

Claims (8)

A circuit board fixing structure is used for fixing a circuit board to a casing, the circuit board fixing structure includes: A buckle boss is formed by protruding a buckle area of the casing toward a raised direction, forming a buckle space on an outer surface of the casing facing away from the raised direction, and having a buckle An edge, an insertion opening is formed between the buckle edge and the casing, and the buckle boss further defines a concave edge along an insertion direction from the buckle edge; and A fixing part sequentially includes along a locking direction: A locking section has a locking hole opened along the locking direction for a locking member to pass through the circuit board along the locking direction and fix the locking member, so as to fix the circuit board; A supporting and fixing section is fixedly connected to the locking section, and a maximum distance between the center and the edge of the supporting and fixing section is greater than a locking section radius of the locking section; a connecting section fixedly connected to the support fixing section for inserting into the concave edge along the insertion direction; and A fastening section is fixedly connected to the connecting section, and is used for clamping the buckle boss with the supporting and fixing section after the connecting section is inserted into the concave edge. The circuit board fixing structure according to claim 1, wherein the supporting and fixing section has two side surfaces parallel to each other. The circuit board fixing structure as claimed in claim 1, wherein the connection section has a connection section radius, and the connection section radius is smaller than the maximum distance. The circuit board fixing structure according to claim 3, wherein the engaging section has a radius of the engaging section, and the radius of the engaging section is larger than the radius of the connecting section. The circuit board fixing structure according to claim 1, wherein the concave edge has a concave edge depth along the insertion direction, and the concave edge depth is greater than the diameter of the connecting section. The circuit board fixing structure according to claim 1, wherein the engaging section has a tapered peripheral surface, and the tapered peripheral surface is tapered from bottom to top. The circuit board fixing structure according to claim 1, wherein the locking hole is a screw hole. The circuit board fixing structure according to claim 1, wherein the supporting and fixing section is integrally connected to the locking section, the connecting section is integrally connected to the supporting and fixing section, and the engaging section is integrally formed connected to the link segment.

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