A support frame structure for a circuit board module

By combining the design of crossbar components, support arm components, and limiting components, along with protruding structures and fixing buckles, the loosening problem of the circuit board module in a vibration environment is solved, achieving stable support and simplified maintenance, thereby improving the stability of the circuit board module and the reliability of the equipment.

CN224306097UActive Publication Date: 2026-05-29NINGBO YUANDING ELECTRIC CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO YUANDING ELECTRIC CO LTD
Filing Date
2025-06-19
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

The existing circuit board module support frame structure is prone to loosening under vibration, leading to poor circuit contact and control device failure, and is also inconvenient to maintain.

Method used

It adopts a combination design of crossbar components, support arm components and limiting components, combined with raised structure, fixed buckle and elastic buckle to form a stable support in all directions, and realizes quick installation and disassembly through fasteners and toolless buckles.

Benefits of technology

It improves the stability and reliability of the circuit board module, simplifies the maintenance process, reduces production and maintenance costs, enhances vibration resistance, and prevents loosening and poor contact.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of support frame structure for circuit board module, and circuit board module is installed on bottom plate by support frame structure, and support frame structure includes: crossbar component, support arm component and limiting component, wherein, crossbar component is used to limit circuit board module;Support arm component extends at the both ends of crossbar component, surrounds circuit board module, and circuit board module is fixed on bottom plate, and support arm component includes fixing piece, and fixing piece is attached with circuit board module, and is fixedly connected by fastener, for relieving vibration when device operates;Multiple limiting components contact with circuit board module, for limiting circuit board module displacement.The utility model solves that circuit board support frame structure uses simple frame type structure, cannot withstand the sustained vibration generated when device operates, resulting in loose between circuit board module and support frame, so that the problem of poor contact of line is generated.
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Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and more specifically, to a support frame structure for circuit board modules. Background Technology

[0002] During wind turbine operation, the circuit board module, as a core control component, undertakes critical tasks such as signal processing, command transmission, and power regulation. However, existing support mechanisms for circuit modules have many drawbacks. Traditional support frames often employ simple frame or flat panel designs, lacking sufficient structural strength to withstand the continuous vibrations and mechanical stresses generated during operation. Under prolonged vibration, the connection between the circuit board module and the support frame is prone to loosening, leading to poor wiring contact, control device malfunctions, and even shutdowns. Furthermore, traditional support frames are inconvenient to operate during maintenance, hindering disassembly and installation by maintenance personnel. Utility Model Content

[0003] The problem solved by this utility model is that the circuit board support frame structure adopts a simple frame structure, which cannot withstand the continuous vibration generated during the operation of the device, resulting in loosening between the circuit board module and the support frame, causing poor contact of the circuit.

[0004] To address the aforementioned problems, this utility model provides a support frame structure for a circuit board module. The circuit board module is mounted on a base plate via the support frame structure. The support frame structure includes: a crossbar component, a support arm component, and limiting components. The crossbar component is used to limit the circuit board module. The support arm component extends from both ends of the crossbar component, surrounds the circuit board module, and fixes the circuit board module to the base plate. The support arm component includes a fixing member that fits against the circuit board module and is fixedly connected by fasteners to mitigate vibration during device operation. Multiple limiting components contact the circuit board module to limit its displacement.

[0005] The technical effects achieved by adopting this technical solution are as follows: Compared with the prior art, this application provides a comprehensive and stable support for the circuit board module through the combined design of the support arm component, the crossbar component and the limiting component, ensuring the stability and reliability of the circuit board module during operation; the use of fasteners to fix the fixing components to the circuit board module reduces vibration during device operation and enhances the stability of the entire support frame structure, reducing loosening problems caused by vibration.

[0006] Furthermore, the limiting component includes: a protruding structure, multiple protruding structures are disposed on the crossbar component and / or support arm component, on the side close to the circuit board module, abutting against the circuit board module, for limiting the horizontal displacement of the circuit board module.

[0007] The technical effects achieved by adopting this solution are as follows: The raised structure directly contacts the circuit board module, effectively preventing minor horizontal shifts or wobbling of the circuit board without adding additional fixing components, thus improving overall installation accuracy and stability. The raised structure works synergistically with the support arm and crossbar components to absorb some vibration energy during equipment operation, reducing vibration transmission to the circuit board module and thereby improving the circuit board module's adaptability and operational reliability in complex vibration environments.

[0008] Furthermore, the circuit board module includes an extension structure that abuts against the protrusion structure to buffer vibrations of the circuit board module during operation.

[0009] The technical effects achieved by adopting this technical solution are as follows: The contact between the extended structure and the raised structure forms a local elastic buffer area. When the equipment is subjected to vibration during operation, it can absorb some of the vibration energy through the interaction between the two, reduce the stress directly transmitted to the main body of the circuit board, thereby effectively alleviating the vibration amplitude of the circuit board module and improving its operational stability.

[0010] Furthermore, the limiting component also includes a fixing buckle, which is located at the bottom of the crossbar component and engages with the circuit board module to limit the vertical displacement of the circuit board module.

[0011] The technical effects achieved by adopting this solution are as follows: The fixing clips use a press-fit structure, allowing for quick installation and removal of the circuit board module without the need for additional tools. This simplifies the assembly process, reduces labor costs, and improves the efficiency of equipment maintenance and replacement. The snap-fit ​​connection between the fixing clips and the circuit board module has excellent pull-out resistance. In continuous vibration environments, it can effectively resist external vibration and impact forces, preventing problems such as poor contact, signal interruption, or control system malfunctions caused by loose circuit board modules, thus ensuring the safe and stable operation of the system.

[0012] Furthermore, the fixing buckle includes: a first tooth and a second tooth, wherein the first tooth fits against the crossbar component; the second tooth is located on the side away from the crossbar component; wherein, when the circuit board module is installed, the edge of the circuit board module is engaged between the first tooth and the second tooth.

[0013] The technical effects achieved by adopting this solution are as follows: The first tooth fits snugly against the crossbar component, providing support and positioning; the second tooth is located on the side away from the crossbar component, forming a clamping slot structure with the first tooth. When the circuit board module is installed, its edge is inserted between the first and second teeth, achieving stable vertical positioning through clamping force. This effectively prevents the circuit board module from shifting vertically or even falling off due to vibration or impact, greatly improving installation stability and operational safety. The double-tooth structure provides wrap-around protection for the edges of the circuit board module, evenly distributing external vibration and impact forces during equipment operation, avoiding localized damage caused by stress concentration.

[0014] Furthermore, the fixing buckle includes a slot, which is located between the first tooth and the second tooth, and the edge of the circuit board module slides into the slot to achieve a detachable connection.

[0015] The technical effects achieved by adopting this solution are as follows: The slot design provides a clear guiding path for the installation of the circuit board module, ensuring accurate installation during assembly and avoiding installation failures or poor contact caused by misalignment or tilting, thus improving assembly consistency and reliability. The slot tightly wraps around the edge of the circuit board module, forming a stable mechanical lock in the vertical direction, effectively preventing the circuit board from loosening or falling off due to vibration or impact during operation. The circuit board module can be installed simply by sliding its edge into the slot, eliminating the need for additional fasteners or tools, simplifying the installation process, shortening maintenance time, and improving equipment maintainability and on-site operational efficiency.

[0016] Furthermore, the support arm component has an elastic buckle on the side away from the crossbar component, and the elastic buckle can be detachably installed on the base plate.

[0017] The technical effects achieved by adopting this solution are as follows: The elastic snap-fit ​​structure allows the support frame to be quickly fixed to the base plate by pressing, without the need for additional tools or screws. Simultaneously, disassembly is also simple, requiring only appropriate pressure or prying of the snap-fit ​​parts, greatly simplifying assembly and maintenance processes and improving on-site operational efficiency. The elastic snap-fit ​​has a certain deformation capacity, which can absorb some vibration energy during equipment operation, alleviating stress concentration problems caused by vibration between the support frame and the base plate, thereby improving the overall structural stability and durability.

[0018] Furthermore, the elastic buckle includes a locking part and an elastic wall, with the locking part located on the side of the elastic wall away from the fixing member 131; pressing the elastic wall will engage the locking part with the base plate to lock the circuit board module.

[0019] The technical effects achieved by adopting this solution are as follows: The tight fit between the locking part and the base plate forms a robust mechanical lock, effectively preventing the support frame from loosening or falling off due to vibration during equipment operation. The elastic wall design provides a certain degree of cushioning when subjected to impact or vibration, absorbing some energy and thus improving the stability and durability of the overall structure. The integrated locking function of the elastic buckle reduces the use of independent fasteners, simplifying the product structure and reducing manufacturing costs and assembly complexity.

[0020] Furthermore, the support arm component includes a transition section that connects the crossbar component and the fixing member, and the transition section has a notch to distribute stress.

[0021] The technical effects achieved by adopting this technical solution are as follows: By setting a transition section with a notch, a stress buffer area is formed at the structural turning point, which can effectively disperse external loads, reduce local stress peaks, and thus extend the service life of the support frame.

[0022] Furthermore, the circuit board module also includes: end caps, which are fixed to both sides of the circuit board module, and the fasteners are fixedly connected to the end caps by fasteners.

[0023] The technical effects achieved by adopting this solution are as follows: The end cap, serving as a crucial connection medium between the circuit board module and the support frame, effectively enhances the mechanical connection strength between the two. By reliably fixing the fixing components to the end cap using fasteners, the circuit board module is firmly integrated into the support frame structure, significantly improving its resistance to external loads such as vibration and impact, and preventing circuit failures or component damage caused by loose connections. The fastener connection between the end cap and the fixing components facilitates disassembly and replacement, improving the maintainability of the equipment and on-site operational efficiency.

[0024] In summary, the above-mentioned technical solutions of this application can have one or more of the following advantages or beneficial effects: i) By adopting crossbar components, support arm components, and limiting components, a multi-directional stable support system is formed. The protruding structure fits tightly with the edge of the circuit board module and is quickly and reliably fixed by elastic buckles, ensuring that the circuit board module will not loosen or shift due to vibration during device operation, thus improving the overall system stability. ii) The design incorporates transition sections and notch structures to disperse stress, and elastic buckles composed of elastic walls and locking parts to absorb vibration energy. These measures effectively enhance the overall vibration resistance of the support frame, protect the circuit board module from vibration damage, and extend its service life. iii) The press-type buckle design enables quick installation and disassembly without additional tools, greatly simplifying the assembly process and reducing maintenance time. In addition, the fastener connection between the end cap and the fixing parts facilitates on-site replacement and maintenance, further improving the maintainability of the equipment. iv) The number of parts and assembly steps are reduced, lowering production costs; at the same time, the improved structure is more robust and durable, reducing the frequency of maintenance and replacement costs due to malfunctions in the later stages. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a support frame structure for a circuit board module according to an embodiment of the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the support frame structure for the circuit board module in an embodiment of the present invention. Figure 2 ;

[0027] Figure 3 for Figure 1 A magnified view of a section at point A in the middle;

[0028] Figure 4 This is a schematic diagram of the support frame structure for the circuit board module in an embodiment of the present invention. Figure 4 ;

[0029] Figure 5 This is a schematic diagram of the support frame structure for the circuit board module in an embodiment of the present invention. Figure 5 .

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Support frame structure; 12-Crossbar component; 13-Support arm component; 131-Fixing component; 132-Elastic buckle; 1321-Locking part; 1322-Elastic wall; 133-Transition section; 1331-Notch; 14-Limiting component; 141-Protruding structure; 142-Fixing buckle; 1421-First tooth; 1422-Second tooth; 1423-Slot; 2-Circuit board module; 21-Circuit board body; 211-Extension structure; 212-End cap; 22-Circuit board base; 3-Base plate. Detailed Implementation

[0032] The purpose of this utility model is to provide a support frame structure for circuit board modules to effectively resist external vibration and impact in the continuous vibration of the equipment, and to prevent problems such as poor contact, signal interruption or control system failure caused by loose circuit board modules.

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0034] See Figure 1 , Figure 2 and Figure 3 , Figure 1 A schematic diagram of a circuit board module mounted on a base plate via a support frame structure; Figure 2 This is a structural diagram of the support frame structure; Figure 3 for Figure 1 A partial enlarged view at point A. This utility model provides a support frame structure 1 for a circuit board module 2. The circuit board module 2 is mounted on a base plate 3 via the support frame structure 1. The support frame structure 1 includes: a crossbar component 12, a support arm component 13, and limiting components 14. The crossbar component 12 is used to limit the circuit board module 2. The support arm component 13 extends from both ends of the crossbar component 12, surrounds the circuit board module 2, and fixes the circuit board module 2 to the base plate 3. The support arm component 13 includes a fixing member 131, which fits against the circuit board module 2 and is fixedly connected by fasteners to alleviate vibration during device operation. Multiple limiting components 14 contact the circuit board module 2 to limit the displacement of the circuit board module 2.

[0035] Specifically, the circuit board module 2 is first fixed to the support frame structure 1, and then the support frame structure 1, on which the circuit board module 2 is mounted, is installed on the base plate 3. The circuit board module 2 includes a circuit board body 21 and a circuit board base 22 located at the bottom of the circuit board body 21. The support frame structure 1 includes a crossbar component 12, a support arm component 13, and a limiting component 14. Two support arm components 13 are located at both ends of the crossbar component 12, partially surrounding the circuit board body 21. The fixing parts 131 on the support arm components 13 are fixedly connected to the circuit board module 2 by fasteners. The limiting component 14 abuts against the outer side of the circuit board module 2, that is, against the outer side of the circuit board body 21, to prevent vibrations generated during device operation from affecting the circuit board module 2.

[0036] See Figure 2 and Figure 3 The limiting component 14 includes: a protrusion structure 141, a plurality of protrusion structures 141 are disposed on the crossbar component 12 and / or the support arm component 13, on the side close to the circuit board module 2, abutting against the circuit board module 2, for limiting the horizontal displacement of the circuit board module 2.

[0037] Specifically, the crossbar component 12 is provided with two protruding structures 141, and each of the two support arm components 13 is provided with one protruding structure 141. When the circuit board module 2 is installed on the support frame structure 1, the four protruding structures 141 abut against the edge of the circuit board body 21 from different directions, jointly limiting the vibration of the circuit board during the operation of the device.

[0038] Preferably, multiple protrusions 141 are disposed on the crossbar component 12 and abut against the circuit board module 2;

[0039] Preferably, multiple protrusions 141 are disposed on the support arm component 13 and abut against the circuit board module 2;

[0040] Preferably, the protrusion structure 141 is disposed on the crossbar component 12 and the support arm component 13, and abuts against the circuit board module 2;

[0041] See Figure 1 and Figure 2 The circuit board module 2 includes an extension structure 211, which abuts against the protrusion structure 141 to buffer the vibration of the circuit board module 2 during operation.

[0042] Specifically, an extension structure 211 is provided at the contact point between the circuit board module 2 and the protrusion structure 141 on the support arm component 13. The extension structure 211 is a protrusion extending from the circuit board body 21. The contact between the extension structure 211 and the protrusion structure 141 forms a buffer area, reducing the stress directly transmitted to the circuit board body 21.

[0043] See Figure 2 and Figure 3The limiting component 14 also includes a fixing buckle 142, which is disposed at the bottom of the crossbar component 12 and engages with the circuit board module 2 to limit the vertical displacement of the circuit board module 2.

[0044] Specifically, the bottom of the crossbar component 12 is provided with two fixing buckles 142. The circuit board base 22 is inserted into the fixing buckles 142, so that the circuit board base 22 is fixed to the bottom of the support frame structure 1, which is used to limit the vertical displacement of the circuit board module 2.

[0045] See Figure 2 and Figure 3 The fixing buckle 142 includes: a first tooth 1421 and a second tooth 1422. The first tooth 1421 is in contact with the crossbar component 12; the second tooth 1422 is located on the side away from the crossbar component 12; wherein, when the circuit board module 2 is installed, the edge of the circuit board module 2 is inserted between the first tooth 1421 and the second tooth 1422.

[0046] Specifically, the fixing buckle 142 includes a first tooth 1421 near the crossbar component 12 and a second tooth 1422 disposed away from the crossbar component 12. When the circuit board module 2 is installed in the support frame structure 1, the circuit board base 22 is snapped between the first tooth 1421 and the second tooth 1422.

[0047] See Figure 2 and Figure 3 The fixing buckle 142 includes a slot 1423, which is located between the first tooth 1421 and the second tooth 1422. The edge of the circuit board module 2 slides into the slot 1423 to achieve a detachable connection.

[0048] Specifically, a slot 1423 is provided between the first tooth 1421 and the second tooth 1422. The circuit board base 22 slides into the slot 1423 and engages with the fixing buckle 142, so as to realize the detachable connection between the circuit board module 2 and the support frame structure 1.

[0049] See Figure 4 and Figure 5 , Figure 4 Schematic diagrams of the support frame structure from other perspectives; Figure 5 This is a schematic diagram of the support frame structure installed on the base plate from another perspective; the support arm component 13 is provided with an elastic buckle 132 on the side away from the crossbar component 12, and the elastic buckle 132 can be detachably installed on the base plate 3.

[0050] Specifically, the ends of the two support arm components 13 are provided with elastic buckles 132 fixed to the base plate 3, which can be detached and installed by pressing.

[0051] See Figure 2 , Figure 4and Figure 5 The elastic buckle 132 includes a locking part 1321 and an elastic wall 1322. The locking part 1321 is located on the side of the elastic wall 1322 away from the fixing member 131. Pressing the elastic wall 1322 will lock the locking part 1321 into the base plate 3 to lock the circuit board module 2.

[0052] Specifically, the end of the elastic buckle 132 is provided with a locking part 1321 and an elastic wall 1322. The locking part 1321 is provided with a barb for locking at the corresponding position of the base plate 3 to fix the support arm component 13 to the base plate 3. By pressing the elastic wall 1322, the locking part 1321 can be inserted into the base plate 3, or the locking part 1321 can be separated from the base plate 3 by pressing the elastic wall 1322.

[0053] See Figure 4 The support arm component 13 includes a transition section 133, which connects the crossbar component 12 and the fixing member 131. The transition section 133 is provided with a notch 1331 to disperse stress.

[0054] Specifically, the support arm component 13 is provided with a transition section 133, which is the section of the support arm component 13 from the end of the crossbar component 12 to the fixing member 131. The transition section 133 is provided with a notch 1331, which is located at the connection between the crossbar component 12 and the support arm component 13, in order to distribute stress evenly and avoid stress concentration.

[0055] Preferably, the notch 1331 is an arc-shaped transition shape;

[0056] Preferably, the notch 1331 is a trapezoidal transition shape;

[0057] Preferably, the wall thickness is increased at the gap 1331 to enhance the overall structural strength and form a stable support system;

[0058] Preferably, a reinforcing rib is used at the gap 1331 to enhance the overall structural strength and form a stable support system;

[0059] See Figure 2 and Figure 3 The circuit board module 2 also includes: end cap 212, which is fixed on both sides of the circuit board module 2, and the fastener 131 is fixedly connected to the end cap 212 by fasteners.

[0060] Specifically, the circuit board module 2 includes end caps 212, which are disposed on both sides of the circuit board body 21 and are fixedly connected to the fastener 131 by fasteners.

[0061] Preferably, the fastener 131 is an ear-shaped structure with holes, which precisely corresponds to the screw holes of the end cap 212, and is fixedly connected to the end cap 212 by screws passing through the holes of the ear-shaped structure.

[0062] In a specific embodiment, within the fan, the support frame has ear-shaped fixing members 131 with perforated structures at both ends. These holes have a diameter of 2.5 mm and a center distance of 53.3 mm. During installation, screws are passed through the holes in the ear-shaped structures to securely connect with the end cap 212 of the circuit board module 2, ensuring that the support frame is firmly fixed inside the fan, thus providing basic support for the circuit board module 2. The crossbar component 12 in the middle of the support frame structure 1 has protrusions 141 of specific dimensions. These protrusions 141 precisely fit the extension structure 211 of the circuit board body 21. After the support frame is installed in place, the protrusions 141 tightly fit the extension structure 211, effectively limiting the horizontal displacement of the circuit board and enhancing the fixing effect on the circuit board. The bottom of the crossbar component 12 is provided with fixing buckles 142, the shape and size of which are precisely calculated to fit tightly with specific parts of the edge of the circuit board base 22. During installation, simply align the buckle at the bottom of the crossbar component 12 with the edge of the circuit board and gently snap it in. The buckle will then lock onto the circuit board base 22, achieving a quick and secure connection without the need for additional tools, making the operation convenient and efficient. An elastic buckle 132 is located on the side of the support arm component 13 away from the crossbar component 12. This elastic buckle 132 includes a locking part 1321 and an elastic wall 1322. The locking part 1321 is located on the side of the elastic wall 1322 away from the fixing member 131. Pressing the elastic wall 1322 will engage the locking part 1321 with the base plate 3, forming a secure lock and ensuring that the support frame will not loosen or fall off during the entire operation of the equipment. The support frame structure 1 is entirely made of ABS material, which has good strength and stability, meeting the requirements of the fan operating environment for the support frame structure 1. The characteristics of ABS material combined with a reasonable structural design enable the support frame structure 1 to effectively resist vibration and mechanical stress during fan operation, preventing the circuit board module 2 from loosening or shifting, and ensuring stable operation of the circuit board.

[0063] This utility model relates to a support frame structure 1 for a circuit board module 2, and the principle by which the circuit board module 2 is mounted on the base plate 3 through the support frame structure 1 is as follows:

[0064] First, the circuit board module 2 is placed inside the support frame structure 1, and the fixing member 131 is initially aligned with the end cap 212. The end cap 212 and the fixing member 131 are then fixedly connected using fasteners, ensuring that the circuit board module 2 is securely fixed to the support frame structure 1. Next, the circuit board base 22 is snapped into the fixing buckle 142 at the bottom of the crossbar component 12, ensuring a tight connection between the fixing buckle 142 and the circuit board without any looseness, effectively limiting the vertical displacement of the circuit board module 2. The position of the support frame structure 1 is adjusted so that the protrusions 141 on the crossbar component 12 and the support arm component 13 are tightly fitted to the circuit board body 21, effectively limiting the horizontal displacement of the circuit board module 2. The support arm component 13 is fixed to the base by an elastic buckle 132 at its end, which includes a locking part 1321 and an elastic wall 1322. The locking part 1321 is located on the side of the elastic wall 1322 away from the fixing member 131. By pressing the elastic wall 1322, the locking part 1321 can be inserted into the base plate 3 to form a stable lock, ensuring that the support frame structure 1 will not loosen or fall off during the entire operation of the equipment.

[0065] The support arm component 13 has a transition section 133 on the side away from the crossbar component 12. The transition section 133 connects the crossbar component 12 and the fixing member 131. A notch 1331 is provided on the transition section 133 to disperse stress, ensure that the external load is effectively dispersed during the operation of the equipment, reduce local stress concentration, and enhance the overall structural strength and fatigue resistance.

[0066] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A support frame structure for a circuit board module, wherein the circuit board module (2) is mounted on a base plate (3) via the support frame structure (1), characterized in that, The support frame structure (1) includes: A crossbar component (12) is used to limit the circuit board module (2); The support arm component (13) extends from both ends of the crossbar component (12) and surrounds the circuit board module (2), fixing the circuit board module (2) on the base plate (3). The support arm component (13) includes a fastener (131), which fits against the circuit board module (2) and is fixedly connected by fasteners to alleviate vibration during device operation. Limiting components (14), a plurality of the limiting components (14) contact the circuit board module (2) to limit the displacement of the circuit board module (2).

2. The support frame structure for a circuit board module according to claim 1, characterized in that, The limiting component (14) includes: A plurality of protruding structures (141) are disposed on the crossbar component (12) and / or the support arm component (13), close to one side of the circuit board module (2), abutting against the circuit board module (2), for limiting the horizontal displacement of the circuit board module (2).

3. The support frame structure for a circuit board module according to claim 2, characterized in that, The circuit board module (2) includes: An extension structure (211) abuts against the protrusion structure (141) to buffer the vibration of the circuit board module (2) during operation.

4. The support frame structure for a circuit board module according to claim 2, characterized in that, The limiting component (14) also includes: A fixing buckle (142) is provided at the bottom of the crossbar component (12). The fixing buckle (142) is engaged with the circuit board module (2) to limit the vertical displacement of the circuit board module (2).

5. The support frame structure for a circuit board module according to claim 4, characterized in that, The fixing buckle (142) includes: The first tooth (1421) is in contact with the crossbar component (12); The second tooth (1422) is disposed on the side away from the crossbar member (12); When the circuit board module (2) is installed, the edge of the circuit board module (2) is engaged between the first tooth (1421) and the second tooth (1422).

6. The support frame structure for a circuit board module according to claim 5, characterized in that, The fixing buckle (142) includes: The card slot (1423) is located between the first tooth (1421) and the second tooth (1422). The edge of the circuit board module (2) slides into the card slot (1423) to achieve a detachable connection.

7. The support frame structure for a circuit board module according to claim 1, characterized in that, The support arm component (13) is provided with an elastic buckle (132) on the side away from the crossbar component (12), and the elastic buckle (132) can be detachably installed on the base plate (3).

8. The support frame structure for a circuit board module according to claim 7, characterized in that, The elastic buckle (132) includes a locking part (1321) and an elastic wall (1322). The locking part (1321) is located on the side of the elastic wall (1322) away from the fixing member (131). Pressing the elastic wall (1322) will lock the locking part (1321) into the base plate (3) to lock the circuit board module (2).

9. The support frame structure for a circuit board module according to claim 1, characterized in that, The support arm component (13) includes: The transition section (133) connects the crossbar component (12) and the fastener (131), and the transition section (133) is provided with a notch (1331) for dispersing stress.

10. The support frame structure for a circuit board module according to claim 1, characterized in that, The circuit board module (2) also includes: End cap (212) is fixed to both sides of the circuit board module (2), and the fastener (131) is fixedly connected to the end cap (212) by the fastener.