PCB fixing structure and electric appliance
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN MEGMEET ELECTRICAL TECH CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-08-07
AI Technical Summary
[0003]本申请的发明人发现：为使得套筒工具能套设在螺母的外壁，PCB板上的电子器件与螺母之间需间隔避让空间，以供套筒工具能正常使用，进而造成PCB板上的电子器件的安装空间减小，易造成电子器件之间的间隙过小，影响电子器件的正常散热
[0015]本申请实施例的有益效果是：区别于现有技术的情况，本申请实施例设置有PCB板、钣金件、第一连接柱以及第二连接柱。其中，PCB板设置有第一通孔，钣金件设置于PCB板的一侧，第一连接柱的一端与钣金件固定连接，第一连接柱的另一端朝PCB板方向延伸并通过第一通孔穿过所述PCB板，第二连接柱螺纹连接于第一连接柱背离钣金件的一端，第二连接柱的一端抵接于PCB板背离钣金件的一侧，第二连接柱的另一端设置有转动凹槽，用户可通过外部工具（例如电批）插接于第二连接柱的转动凹槽内，以带动第二连接柱相对于第一连接柱转动，进而实现第二连接柱与第一连接柱之间的安装、拆卸，本申请实施例中，用户无需在PCB板上为外部工具提供额外的避让空间，从而保证PCB板上的电子器件具有较大的安装空间，以保证电子器件之间的间隙处于正常范围内，以保证电子器件的正常散热。
Smart Images
Figure CN224610984U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of printed circuit board technology, and in particular to a PCB board fixing structure and electrical equipment. Background Technology
[0002] A PCB (Printed Circuit Board) is the provider of electrical connections in electronic components. Its main advantages are reducing wiring and assembly errors, improving automation levels, and increasing production efficiency. In related technologies, the connection between the PCB and sheet metal parts is mainly achieved through nuts and press-fit nuts. The press-fit nut is mounted on the sheet metal part, and the nut is screwed onto the press-fit nut and abuts against the PCB. During the installation and removal of the nut, a socket tool is required. The socket tool is fitted over the outer wall of the nut to rotate it.
[0003] The inventors of this application discovered that in order for the socket tool to be fitted onto the outer wall of the nut, there needs to be a clearance between the electronic components on the PCB board and the nut so that the socket tool can be used normally. This reduces the installation space for the electronic components on the PCB board, which can easily lead to insufficient gaps between the electronic components and affect their normal heat dissipation. Utility Model Content
[0004] In view of the above problems, embodiments of this application provide a PCB board fixing structure and electrical equipment, which overcomes or at least partially solves the above problems.
[0005] According to one aspect of this application, a fixing structure for a PCB board is provided, including a PCB board having a first through hole; a sheet metal component connected to one side of the PCB board; a first connecting post, one end of which is fixedly connected to the sheet metal component, and the other end of which extends toward the PCB board and passes through the first through hole into the PCB board; and a second connecting post, which is threadedly connected to the end of the first connecting post opposite to the sheet metal component, one end of which abuts against the side of the PCB board opposite to the sheet metal component, and the other end of which has a rotating groove.
[0006] In one alternative embodiment, the outer wall of the first connecting post is provided with external threads; the second connecting post is provided with a connecting cavity and a connecting port communicating with the connecting cavity, the inner wall of the connecting cavity is provided with internal threads, and the second connecting post is sleeved on the end of the first connecting post opposite to the sheet metal part from the connecting port, and the internal threads are screwed into the external threads.
[0007] In one alternative embodiment, the connection port is provided with a tapered surface, and the diameter of the connection port gradually increases in the direction away from the bottom of the connection cavity.
[0008] In one alternative embodiment, the rotating groove includes a horizontal groove, and the rotating groove is in the shape of a straight line.
[0009] In one alternative, the rotating groove is a cross groove.
[0010] In one alternative embodiment, the sheet metal part is provided with a second through hole, which is disposed opposite to the first through hole; the first connecting post passes through the second through hole, and a connecting base is provided at the end of the first connecting post away from the PCB board; the first connecting post passes through the second through hole and is fixed to the sheet metal part through the connecting base.
[0011] In one alternative embodiment, the first connecting post includes a threaded post and a limiting post connected to the threaded post. The limiting post is located between the threaded post and the connecting base. The threaded post passes through the first through hole and is connected to the second connecting post. The side of the limiting post opposite to the sheet metal part abuts against the PCB board to create a predetermined space between the PCB board and the sheet metal part.
[0012] In one alternative embodiment, the threaded post and the limiting post are coaxially arranged, and the diameter of the limiting post is larger than the diameter of the threaded post, and the diameter of the limiting post is larger than the diameter of the first through hole.
[0013] In one alternative embodiment, the threaded post has a chamfer at one end near the PCB board.
[0014] According to another aspect of this application, an electrical device is provided, including a PCB board fixing structure as described above.
[0015] The beneficial effects of this application embodiment are as follows: Unlike the prior art, this application embodiment includes a PCB board, a sheet metal part, a first connecting post, and a second connecting post. The PCB board has a first through hole, the sheet metal part is disposed on one side of the PCB board, one end of the first connecting post is fixedly connected to the sheet metal part, and the other end of the first connecting post extends towards the PCB board and passes through the first through hole. The second connecting post is threadedly connected to the end of the first connecting post opposite to the sheet metal part, and one end of the second connecting post abuts against the side of the PCB board opposite to the sheet metal part. The other end of the second connecting post has a rotating groove. A user can insert an external tool (e.g., an electric screwdriver) into the rotating groove of the second connecting post to rotate the second connecting post relative to the first connecting post, thereby enabling the installation and removal of the second connecting post from the first connecting post. In this application embodiment, the user does not need to provide additional clearance space for external tools on the PCB board, thus ensuring that the electronic components on the PCB board have ample installation space, ensuring that the gaps between electronic components are within a normal range, and ensuring normal heat dissipation of the electronic components. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0017] Figure 1 This is a schematic diagram of the overall structure of the fixing structure of the PCB board in the embodiment of this application;
[0018] Figure 2 This is an exploded view of the overall structure of the fixing structure of the PCB board in the embodiment of this application;
[0019] Figure 3 This is a schematic diagram of the second connecting column structure of one embodiment of the fixing structure of the PCB board of this application;
[0020] Figure 4 This is a schematic diagram of the second connecting column of the fixing structure of the PCB board in an embodiment of this application from an angle.
[0021] Figure 5 This is another schematic diagram of the second connecting column of the fixing structure of the PCB board in the embodiment of this application;
[0022] Figure 6 This is a schematic diagram of the first connecting post of the fixing structure of the PCB board in the embodiment of this application. Detailed Implementation
[0023] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.
[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0025] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.
[0026] Please see Figure 1 The PCB board fixing structure 1000 includes a PCB board 10, a sheet metal part 20, a first connecting post 30, and a second connecting post 40. The sheet metal part 20 is disposed on one side of the PCB board 10, and the first connecting post 30 and the second connecting post 40 are connected to achieve relative fixation between the sheet metal part 20 and the PCB board 10.
[0027] For the aforementioned PCB board 10 and sheet metal part 20, such as Figure 1 and Figure 2 As shown, the sheet metal part 20 is disposed on one side of the PCB board 10. The sheet metal part 20 can position and support the PCB board 10 through the first connecting post 40. The PCB board 10 is equipped with a large number and variety of electronic components. This application does not specifically limit the number or type of electronic components; users can select them according to their actual needs. It is understood that the materials used to manufacture the sheet metal part 20 include, but are not limited to, cold-rolled steel sheets, galvanized steel sheets, stainless steel sheets, aluminum sheets, copper sheets, etc. In this application, the sheet metal part 20 can be the outer casing of the equipment; specific details are not limited in this application.
[0028] In some embodiments, the PCB board 10 is provided with a first through hole 101, and the sheet metal part 20 is provided with a second through hole 201. The second through hole 201 is disposed opposite to the first through hole 101. The first through hole 101 allows the first connecting post 30 to pass through and connect to the second connecting post 40. The second through hole 201 is used for the installation and fixing of the second connecting post 40, so as to fix the second connecting post 40 to the sheet metal part 20.
[0029] In some embodiments, the PCB board 10 and the sheet metal part 20 are arranged in parallel. This arrangement can make the connection between the PCB board 10 and the sheet metal part 20 bear force evenly, thereby reducing the possibility of warping and deformation of the PCB board 10 and the sheet metal part 20.
[0030] For the first connecting post 30 and the second connecting post 40 mentioned above, as Figure 1 and Figure 2 As shown, one end of the first connecting post 30 is fixedly connected to the sheet metal part 20, and the other end of the first connecting post 30 extends toward the PCB board 10 and passes through the PCB board 10 through the first through hole 101. The second connecting post 40 is threadedly connected to the end of the first connecting post 30 away from the sheet metal part 20, and one end of the second connecting post 40 abuts against the side of the PCB board 10 away from the sheet metal part 20. The first connecting post 30 and the second connecting post 40 are threadedly connected to realize the connection between the PCB board 10 and the sheet metal part 20.
[0031] In some embodiments, please refer to the following: Figure 3 and Figure 4 The other end of the second connecting post 40 is provided with a rotating groove 40a. The user can insert an external tool (such as an electric screwdriver) into the rotating groove 40a of the second connecting post 40 to drive the second connecting post 40 to rotate relative to the first connecting post 30, thereby realizing the installation and disassembly of the second connecting post 40 and the first connecting post 30.
[0032] In some embodiments, the rotating groove 40a includes a horizontal groove 40aa, the rotating groove 40a is in the shape of a straight line, and the rotating groove 40a is a straight groove. At this time, the user uses the straight bit of the electric screwdriver to insert into the straight rotating groove 40a to drive the second connecting post 40 to rotate.
[0033] In some embodiments, the rotating groove 40a includes a horizontal groove 40aa and a vertical groove 40ab. The vertical groove 40ab and the horizontal groove 40aa are interconnected and perpendicularly arranged. The rotating groove 40a is cross-shaped and is a cross-shaped groove. In this case, the user uses a cross-shaped screwdriver bit on an electric screwdriver to insert into the cross-shaped rotating groove 40a to drive the second connecting post 40 to rotate. It is understood that the shape of the rotating groove 40a is not limited to the above-mentioned straight or cross-shaped shape, but can also be other types, such as hexagonal, star-shaped, or other shapes.
[0034] In some embodiments, please refer to the following: Figure 5The outer wall of the first connecting post 30 is provided with external threads (not shown in the figure). The second connecting post 40 is provided with a connecting cavity 40b and a connecting port 40c communicating with the connecting cavity 40b. The inner wall of the connecting cavity 40b is provided with internal threads. The second connecting post 40 is sleeved on the end of the first connecting post 30 away from the sheet metal part 20 from the connecting port 40c. The internal thread is screwed into the external thread, thereby realizing the threaded connection between the first connecting post 30 and the second connecting post 40. It can be understood that the threaded connection method between the first connecting post 30 and the second connecting post 40 is not limited to the above, and can also be other methods, such as: the inner wall of the first connecting post 30 is provided with internal threads, and the outer wall of the second connecting post 40 is provided with external threads.
[0035] In some embodiments, the connection port 40c is provided with a tapered surface 40cc, and the diameter of the connection port 40c gradually increases in the direction away from the bottom of the connection cavity 40b. When the first connecting post 30 enters the connection cavity 40b from the connection port 40c, the tapered surface 40cc of the connection port 40c facilitates the smooth assembly of the first connecting post 30.
[0036] In some embodiments, please refer to the following: Figure 6 A connecting base 301 is provided at the end of the first connecting post 30 facing away from the PCB board 10. The first connecting post 30 passes through the second through hole 201 and is fixed to the sheet metal part 20 through the connecting base 301, thereby achieving relative fixation of the first connecting post 30 to the sheet metal part 20. At the same time, the connecting base 301 can also limit the movement of the first connecting post 30 along the thickness direction of the sheet metal part 20. In some embodiments, the connecting base 301 is fixed to the sheet metal part 20 by a riveting process. It is understood that the method of fixing the connecting base 301 to the sheet metal part 20 is not limited to the riveting process, but can also be other methods, such as welding, snap-fit, etc.
[0037] In some embodiments, the first connecting post 30 includes a threaded post 302 and a limiting post 303 connected to the threaded post 302. The limiting post 303 is located between the threaded post 302 and the connecting base 301. The threaded post 302 passes through the first through hole 101 and connects to the second connecting post 40. The side of the limiting post 303 facing away from the sheet metal part 20 abuts against the PCB board 10 to create a preset space between the PCB board 10 and the sheet metal part 20. The threaded post 302 connects to the second connecting post 40, and the limiting post 303 creates a preset distance between the PCB board 10 and the sheet metal part 20, thereby ensuring a safety distance between the electronic components on the PCB board 10 and the sheet metal part 20. This preset space allows for heat dissipation of the electronic components on the PCB board 10 under airflow conditions and also facilitates the entry of maintenance tools, etc.
[0038] In some embodiments, the threaded post 302 and the limiting post 303 are coaxially arranged, and the diameter of the limiting post 303 is greater than the diameter of the threaded post 302. The diameter of the limiting post 303 is greater than the diameter of the first through hole 101. This arrangement ensures that the limiting post 303 can properly abut against the PCB board 10, so that there is a preset distance between the PCB board 10 and the sheet metal part 20.
[0039] In some embodiments, the threaded post 302 is provided with a chamfer 3021 at one end near the PCB board 10. After machining, burrs often remain at one end of the threaded post 302. The chamfer 3021 structure can remove the burrs. At the same time, this arrangement can also reduce the damage to the inner wall of the connecting cavity 40b by the threaded post 302 during the process of inserting the threaded post 302 into the connecting cavity 40b.
[0040] In some embodiments, there may be multiple first connecting posts 30 and multiple second connecting posts 40, with the number of first connecting posts 30 corresponding to the number of second connecting posts 40. For example, there may be four first connecting posts 30 and four second connecting posts 40. The four first connecting posts 30 are located at the four corners of the sheet metal part 20, and the four second connecting posts 40 are located at the four corners of the PCB board 10.
[0041] In this embodiment of the application, a PCB board 10, a sheet metal part 20, a first connecting post 30 and a second connecting post 40 are provided. The PCB board 10 has a first through hole 101. The sheet metal part 20 is disposed on one side of the PCB board 10. One end of the first connecting post 30 is fixedly connected to the sheet metal part 20, and the other end of the first connecting post 30 extends toward the PCB board 10 and passes through the first through hole 101. The second connecting post 40 is threadedly connected to the end of the first connecting post 30 away from the sheet metal part 20. One end of the second connecting post 40 abuts against the side of the PCB board 10 away from the sheet metal part 20. The other end of the second connecting post 40 is provided with a rotating groove 40a. The user can insert an external tool (such as an electric screwdriver) into the rotating groove 40a of the second connecting post 40 to drive the second connecting post 40 to rotate relative to the first connecting post 30, thereby realizing the installation and disassembly of the second connecting post 40 and the first connecting post 30. In this embodiment, the user does not need to provide additional clearance space for external tools on the PCB board 10, thereby ensuring that the electronic components on the PCB board 10 have a large installation space, so as to ensure that the gap between the electronic components is within the normal range and to ensure the normal heat dissipation of the electronic components.
[0042] This application also provides an embodiment of an electrical device, which includes a PCB board fixing structure 1000 as described above. The function and structure of the PCB board fixing structure 1000 can be found in the above embodiments, and will not be repeated here.
[0043] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A PCB board fixing structure, characterized in that, include: PCB board, wherein the PCB board is provided with a first through hole; Sheet metal parts are disposed on one side of the PCB board; A first connecting post, one end of which is fixedly connected to the sheet metal part, and the other end of which extends toward the PCB board and passes through the PCB board through the first through hole; The second connecting post is threaded to the end of the first connecting post that is away from the sheet metal part. One end of the second connecting post abuts against the side of the PCB board that is away from the sheet metal part. The other end of the second connecting post is provided with a rotating groove.
2. The fixing structure according to claim 1, characterized in that, The outer wall of the first connecting column is provided with external threads; The second connecting post is provided with a connecting cavity and a connecting port communicating with the connecting cavity. The inner wall of the connecting cavity is provided with an internal thread. The second connecting post is sleeved on the end of the first connecting post away from the sheet metal part from the connecting port. The internal thread is screwed into the external thread.
3. The fixing structure according to claim 2, characterized in that, The connection port is provided with a tapered surface, and the diameter of the connection port gradually increases in the direction away from the bottom of the connection cavity.
4. The fixing structure according to claim 1, characterized in that, The rotating groove includes a horizontal groove, and the rotating groove is in the shape of a straight line.
5. The fixing structure according to claim 1, characterized in that, The rotating groove is a cross-shaped groove.
6. The fixing structure according to claim 1, characterized in that, The sheet metal part is provided with a second through hole, which is positioned opposite to the first through hole; The first connecting post has a connecting base at one end away from the PCB board, and the first connecting post passes through the second through hole and is fixed to the sheet metal part through the connecting base.
7. The fixing structure according to claim 6, characterized in that, The first connecting post includes a threaded post and a limiting post connected to the threaded post. The limiting post is located between the threaded post and the connecting base. The threaded post passes through the first through hole and is connected to the second connecting post. The side of the limiting post away from the sheet metal part abuts against the PCB board to make the PCB board and the sheet metal part separated by a preset space.
8. The fixing structure according to claim 7, characterized in that, The threaded post and the limiting post are coaxially arranged, and the diameter of the limiting post is greater than the diameter of the threaded post, and the diameter of the limiting post is greater than the diameter of the first through hole.
9. The fixing structure according to claim 7, characterized in that, The threaded post has a chamfer at the end closest to the PCB board.
10. An electrical appliance, characterized in that, The PCB board fixing structure includes any one of claims 1-9.