Magnetic metal sheet for fixing circuit board, circuit board and electronic equipment

Abstract

The utility model provides a magnetic metal sheet for fixing a circuit board, the circuit board and electronic equipment. The magnetic metal sheet for fixing the circuit board comprises a magnetic circular truncated cone and a fixing structure, one side face of the magnetic circular truncated cone is provided with an embedding groove, the embedding groove is used for embedding a limiting column of the circuit board, and the magnetic circular truncated cone is used for being in magnetic attraction with a magnetic block; the fixing structure comprises a clamping boss and a welding column, one end of the clamping boss is located in the embedding groove and connected with the magnetic suction circular truncated cone, the other end of the clamping boss is connected with the welding column, the diameter of the welding column is smaller than that of the clamping boss, the clamping boss is used for being connected with a clamping hole of a circuit board in a clamped mode, and the clamping boss is used for being connected with the magnetic suction circular truncated cone in a clamped mode. The welding columns are used for penetrating through the clamping holes and then are welded to the hole walls of the welding holes of the circuit board. And through combination of the embedding groove, the clamping boss, the welding column and the circuit board in multiple aspects, the connection strength of the metal sheet and the circuit board is higher.

Description

Technical Field

[0001] This disclosure relates to the field of circuit boards, and in particular to a magnetic metal sheet for fixing circuit boards, circuit boards, and electronic devices. Background Technology

[0002] During the production process, circuit boards need to go through multiple processes such as lamination, drilling, copper plating, and electroplating. Each process requires fixing the circuit board to improve the accuracy of processing. In traditional technology, the circuit board is fixed to the work station by screwing, which has the problem of poor disassembly and assembly convenience.

[0003] To address the issue of poor ease of assembly and disassembly, Chinese Patent Application No. CN202222406654.7 discloses a magnetically attracted printed circuit board, comprising a circuit board body, with first magnetic blocks at the four bottom corners of the circuit board body, each first magnetic block having a magnetic foot, each magnetic foot including a support base, and a second magnetic block magnetically attracted to the first magnetic block fixed to the top of the support base, the support base being fixed to the mounting surface by bolts.

[0004] However, the above-mentioned magnetic printed circuit board design has the following problems during use:

[0005] The aforementioned circuit board features a first magnetic block on its main body and a second magnetic block on its support base, which magnetically attract each other, thus improving the ease of assembly and disassembly. However, because the circuit board and the first magnetic block are connected by soldering (i.e., the first magnetic block on one side of the circuit board is connected by solder), the interface between the circuit board and the first magnetic block is not smooth enough, resulting in poor connection strength.

[0006] Therefore, there is an urgent need for a magnetic metal sheet with a flat interface to the circuit board and high connection strength. Utility Model Content

[0007] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a magnetic metal sheet, circuit board, and electronic device for fixing circuit boards with a flat connection interface and high connection strength.

[0008] The purpose of this disclosure is achieved through the following technical solution:

[0009] A magnetic metal sheet for fixing circuit boards includes:

[0010] A magnetic frustum, wherein one side of the magnetic frustum is provided with an embedding groove, the embedding groove is used to embed the limiting post of the circuit board, and the magnetic frustum is used to magnetically attract and engage with the magnetic block;

[0011] A fixing structure includes a snap-fit ​​boss and a welding post. One end of the snap-fit ​​boss is located in the embedding groove and connected to the magnetic frustum. The other end of the snap-fit ​​boss is connected to the welding post. The diameter of the welding post is smaller than the diameter of the snap-fit ​​boss. The snap-fit ​​boss is used to snap into the snap-fit ​​hole of the circuit board. The welding post is used to pass through the snap-fit ​​hole and weld to the wall of the welding hole of the circuit board.

[0012] In one embodiment, the magnetic frustum and the fixing structure are integrally stamped.

[0013] In one embodiment, the diameter of the snap-fit ​​boss gradually decreases from one end adjacent to the magnetic frustum toward the end adjacent to the welding post.

[0014] In one embodiment, the length of the welded post is greater than the length of the snap-fit ​​boss.

[0015] In one embodiment, the welding column protrudes from the surface of the magnetic frustum.

[0016] In one embodiment, the snap-fit ​​boss is disposed in the middle of the bottom wall of the embedding groove.

[0017] In one embodiment, the welding post is located at the center of the side of the snap-fit ​​boss away from the magnetic frustum.

[0018] In one embodiment, the cross-section of the embedding groove is circular.

[0019] A circuit board includes a board body and a magnetic metal sheet for fixing the circuit board as described in any of the above embodiments. The board body is provided with a limiting post, and the limiting post has a snap-fit ​​hole and a welding hole. The snap-fit ​​hole and the welding hole are connected. The snap-fit ​​boss is located in the snap-fit ​​hole, and the welding post is located in the welding hole.

[0020] An electronic device comprising the circuit board described in any of the above embodiments.

[0021] Compared with the prior art, this disclosure has at least the following advantages:

[0022] 1. The aforementioned magnetic metal sheet for fixing the circuit board has an embedding groove for embedding the limiting post of the circuit board. The limiting post has a connected snap-fit ​​hole and a welding hole. When the limiting post is embedded in the embedding groove, the welding post passes through the snap-fit ​​hole and enters the welding hole. The welding post is welded to the circuit board by filling the welding hole with tin. At the same time, the snap-fit ​​boss snaps into the snap-fit ​​hole of the limiting post. In this way, the embedding groove, snap-fit ​​boss and welding post are combined with the circuit board in multiple ways, so that the connection strength between the metal sheet and the circuit board is higher. Since the welding post is located in the welding hole and welded to the circuit board, the connection interface between the metal sheet and the circuit board is smoother.

[0023] 2. After the magnetic metal sheet is fixed to the circuit board, the magnetic frustum and the magnetic block on the workstation are magnetically attracted to each other, which improves the convenience of fixing the circuit board on the workstation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a magnetic metal sheet for fixing a circuit board according to an embodiment;

[0026] Figure 2 for Figure 1 Another schematic diagram of the magnetic metal sheet used for fixing the circuit board is shown.

[0027] Figure 3 for Figure 1 The image shown is of a magnetic metal sheet used for fixing circuit boards. Detailed Implementation

[0028] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] This disclosure provides a magnetic metal sheet for fixing a circuit board, including a magnetic frustum and a fixing structure. One side of the magnetic frustum has an insertion groove for inserting a limiting post of the circuit board. The magnetic frustum is used to magnetically attract a magnetic block. The fixing structure includes a snap-fit ​​boss and a welding post. One end of the snap-fit ​​boss is located in the insertion groove and connected to the magnetic frustum. The other end of the snap-fit ​​boss is connected to the welding post. The diameter of the welding post is smaller than the diameter of the snap-fit ​​boss. The snap-fit ​​boss is used to snap into a snap-fit ​​hole on the circuit board, and the welding post is used to pass through the snap-fit ​​hole and weld to the wall of the welding hole on the circuit board.

[0032] The aforementioned magnetic metal sheet for fixing the circuit board has an embedding groove for embedding the limiting post of the circuit board. The limiting post has a connecting snap-fit ​​hole and a welding hole. When the limiting post is embedded in the embedding groove, the welding post passes through the snap-fit ​​hole and enters the welding hole. Solder is filled into the welding hole to weld the welding post to the circuit board. At the same time, the snap-fit ​​boss snaps into the snap-fit ​​hole of the limiting post. In this way, the embedding groove, snap-fit ​​boss, welding post and circuit board are combined in multiple ways to make the connection strength between the metal sheet and the circuit board higher. Since the welding post is located in the welding hole and welded to the circuit board, the connection interface between the metal sheet and the circuit board is smoother. After the magnetic metal sheet is fixed to the circuit board, the magnetic frustum magnetically attracts the magnetic block on the workstation, thus improving the convenience of fixing the circuit board at the workstation.

[0033] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0034] like Figure 1 and Figure 2 As shown, a magnetic metal sheet 10 for fixing a circuit board in one embodiment includes a magnetic frustum 100 and a fixing structure 200. One side of the magnetic frustum 100 is provided with an embedding groove 110, which is used to embed the limiting post of the circuit board. The magnetic frustum 100 is used to magnetically attract with the magnetic block to improve the convenience of fixing the circuit board at the work station.

[0035] Furthermore, the fixing structure 200 includes a snap-fit ​​boss 210 and a welding post 220. One end of the snap-fit ​​boss 210 is located in the embedding groove 110 and connected to the magnetic frustum 100. The other end of the snap-fit ​​boss 210 is connected to the welding post 220. The diameter of the welding post 220 is smaller than the diameter of the snap-fit ​​boss 210. The snap-fit ​​boss 210 is used to snap into the snap-fit ​​hole of the circuit board. The welding post 220 is used to pass through the snap-fit ​​hole and weld to the wall of the welding hole of the circuit board to fix the circuit board to the magnetic metal sheet.

[0036] In this embodiment, a limiting post is provided on the circuit board, which is embedded in the embedding groove 110. The limiting post has a connecting snap-fit ​​hole and a welding hole. The welding post 220 wire passes through the snap-fit ​​hole and enters the welding hole. At this time, the snap-fit ​​boss 210 snaps into the snap-fit ​​hole. By filling the welding hole with solder, the circuit board is welded to the magnetic metal sheet. In this way, the embedding groove 110, the snap-fit ​​boss 210, and the welding post 220 are combined with the circuit board in multiple ways, so that the connection strength between the metal sheet and the circuit board is higher. Furthermore, the diameter of the welding post 220 is smaller than the diameter of the snap-fit ​​boss 210, so that the welding post 220 can better pass through the snap-fit ​​hole of the circuit board and weld to the hole wall.

[0037] The aforementioned magnetic metal sheet 10 for fixing the circuit board has an embedding groove 110 for embedding the limiting post of the circuit board. The limiting post has a connecting snap-fit ​​hole and a welding hole. When the limiting post is embedded in the embedding groove 110, the welding post 220 passes through the snap-fit ​​hole and enters the welding hole. The welding post 220 is welded to the circuit board by filling the welding hole with tin. At the same time, the snap-fit ​​boss 210 snaps into the snap-fit ​​hole of the limiting post. In this way, the embedding groove 110, the snap-fit ​​boss 210 and the welding post 220 are combined with the circuit board in multiple ways, so that the connection strength between the metal sheet and the circuit board is higher. Since the welding post 220 is located in the welding hole and welded to the circuit board, the connection interface between the metal sheet and the circuit board is smoother. After the magnetic metal sheet is fixed to the circuit board, the magnetic frustum 100 is magnetically attracted to the magnetic block on the workstation. Specifically, the magnetic frustum 100 is a metal frustum that is easy to be magnetically attracted, and the magnetic block is a magnet. This improves the convenience of fixing the circuit board on the workstation.

[0038] In one embodiment, the magnetic frustum 100 and the fixing structure 200 are integrally stamped. In this embodiment, the magnetic metal sheet is made of iron, and the magnetic frustum 100 and the fixing structure 200 are stamped using a stamping process to make the structure of the magnetic metal sheet more compact and stronger.

[0039] In one embodiment, the diameter of the snap-fit ​​boss 210 gradually decreases from one end adjacent to the magnetic frustum 100 to the end adjacent to the welding post 220. It is understood that because the snap-fit ​​hole diameter of the circuit board is small, and the snap-fit ​​hole and snap-fit ​​boss 210 are in an interference fit, the snap-fit ​​boss 210 experiences a relatively large force when entering the snap-fit ​​hole, resulting in poor ease of entry. In this embodiment, the snap-fit ​​boss 210 is set in a conical shape, that is, the diameter of the snap-fit ​​boss 210 gradually decreases from one end adjacent to the magnetic frustum 100 to the end adjacent to the welding post 220, allowing the snap-fit ​​boss 210 to enter the snap-fit ​​hole along the inclined surface, thus improving the ease of entry.

[0040] like Figure 1 and Figure 2 As shown, in one embodiment, the length of the welding post 220 is greater than the length of the snap-fit ​​boss 210. In this embodiment, the length of the welding post 220 is greater than the length of the snap-fit ​​boss 210 so that the welding area between the welding post 220 and the circuit board is larger, thereby making the connection strength between the magnetic metal sheet and the circuit board higher.

[0041] like Figure 1 and Figure 2 As shown, in one embodiment, the welding post 220 protrudes from the surface of the magnetic frustum so that the welding post 220 passes through the snap-fit ​​hole of the circuit board and enters the welding hole.

[0042] like Figure 1 and Figure 2 As shown, in one embodiment, the snap-fit ​​boss 210 is disposed in the middle of the bottom wall of the embedding groove 110 to make the structure of the magnetic metal sheet more compact.

[0043] like Figure 1 and Figure 2 As shown, in one embodiment, the welding post 220 is disposed in the middle of the side of the snap-fit ​​boss 210 away from the magnetic frustum 100, so as to make the structure of the magnetic metal sheet more compact.

[0044] like Figure 1 and Figure 2 As shown, in one embodiment, the cross-section of the embedding groove 110 is circular. It is understood that the limiting post on the circuit board is circular, and the embedding groove 110 matches the shape of the limiting post. In other embodiments, the cross-section of the embedding groove 110 can also be rectangular, trapezoidal, or other shapes.

[0045] This application also provides a circuit board, including a board body and a magnetic metal sheet for fixing the circuit board as described in any of the above embodiments. The board body is provided with a limiting post, and the limiting post has a snap-fit ​​hole and a welding hole. The snap-fit ​​hole and the welding hole are connected. The snap-fit ​​boss is located in the snap-fit ​​hole, and the welding post is located in the welding hole.

[0046] This application also provides an electronic device including the circuit board described in any of the above embodiments.

[0047] Compared with the prior art, this disclosure has at least the following advantages:

[0048] 1. The magnetic metal sheet 10 used for fixing the circuit board has an embedding groove 110 for embedding the limiting post of the circuit board. The limiting post has a connecting snap-fit ​​hole and a welding hole. When the limiting post is embedded in the embedding groove 110, the welding post 220 passes through the snap-fit ​​hole and enters the welding hole. The welding post 220 is welded to the circuit board by filling the welding hole with tin. At the same time, the snap-fit ​​boss 210 snaps into the snap-fit ​​hole of the limiting post. In this way, the embedding groove 110, the snap-fit ​​boss 210 and the welding post 220 are combined with the circuit board in multiple ways, so that the connection strength between the metal sheet and the circuit board is higher. Since the welding post 220 is located in the welding hole and welded to the circuit board, the connection interface between the metal sheet and the circuit board is flatter.

[0049] 2. After the magnetic metal sheet is fixed to the circuit board, the magnetic frustum 100 magnetically attracts the magnetic block on the workstation, thus improving the convenience of fixing the circuit board on the workstation.

[0050] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A magnetic metal sheet for fixing circuit boards, characterized in that, include: A magnetic frustum, wherein one side of the magnetic frustum is provided with an embedding groove, the embedding groove is used to embed the limiting post of the circuit board, and the magnetic frustum is used to magnetically attract and engage with the magnetic block; A fixing structure includes a snap-fit ​​boss and a welding post. One end of the snap-fit ​​boss is located in the embedding groove and connected to the magnetic frustum. The other end of the snap-fit ​​boss is connected to the welding post. The diameter of the welding post is smaller than the diameter of the snap-fit ​​boss. The snap-fit ​​boss is used to snap into the snap-fit ​​hole of the circuit board. The welding post is used to pass through the snap-fit ​​hole and weld to the wall of the welding hole of the circuit board.

2. The magnetic metal sheet for fixing a circuit board according to claim 1, characterized in that, The magnetic frustum and the fixing structure are integrally stamped.

3. The magnetic metal sheet for fixing a circuit board according to claim 1, characterized in that, The diameter of the snap-fit ​​boss gradually decreases from the end adjacent to the magnetic frustum to the end adjacent to the welding post.

4. The magnetic metal sheet for fixing a circuit board according to claim 1, characterized in that, The length of the welded column is greater than the length of the snap-fit ​​boss.

5. The magnetic metal sheet for fixing a circuit board according to claim 1, characterized in that, The welding column protrudes from the surface of the magnetic frustum.

6. The magnetic metal sheet for fixing a circuit board according to claim 1, characterized in that, The snap-fit ​​boss is located in the middle of the bottom wall of the embedding groove.

7. The magnetic metal sheet for fixing a circuit board according to claim 1, characterized in that, The welding post is located in the middle of the side of the snap-fit ​​boss away from the magnetic frustum.

8. The magnetic metal sheet for fixing a circuit board according to claim 1, characterized in that, The cross-section of the embedding groove is circular.

9. A circuit board, characterized in that, The invention includes a plate body and a magnetic metal sheet for fixing a circuit board as described in any one of claims 1 to 8. The plate body is provided with a limiting post, the limiting post having a snap-fit ​​hole and a welding hole, the snap-fit ​​hole and the welding hole being connected, the snap-fit ​​boss being located in the snap-fit ​​hole, and the welding post being located in the welding hole.

10. An electronic device, characterized in that, Includes the circuit board as described in claim 9.

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