A trigger-type snap-fit ​​structure, a fan module, and a server

Abstract

This invention discloses a trigger-type snap-fit ​​structure, a fan module, and a server. The trigger-type snap-fit ​​structure includes a base, an elastic pressure bar, a rotating handle, an elastic reset component, and a rotating drive component. The base has an installation cavity; the elastic pressure bar is disposed within the installation cavity and includes an elastic arm, a pressing part connected to one end of the elastic arm, and a limiting protrusion disposed at the end of the elastic arm away from the pressing part; one end of the rotating handle is rotatably mounted on the outer wall of the base, and the other end has a first slot, in which the limiting protrusion is placed; the elastic reset component is disposed within the installation cavity and is used to reset the pressing part after the external force on the pressing part is removed; the rotating drive component is disposed on the outer wall of the base and is used to provide power for the rotation of the rotating handle. By setting the elastic pressure bar, rotating handle, elastic reset component, and rotating drive component to work together, simply pressing down on the pressing part causes the limiting protrusion to disengage from the first slot, thus achieving rapid triggering of the snap-fit ​​structure and improving equipment connection and maintenance efficiency.

Description

Technical Field

[0001] This invention relates to the field of fan module assembly and disassembly technology, and in particular to a trigger-type snap-fit ​​structure, a fan module, and a server. Background Technology

[0002] With the widespread application of data centers and cloud computing technologies, servers provide computing and application services to PCs, smartphones, and other terminals in various network environments. Their operational stability directly impacts the continuity of overall business operations. Servers possess high-speed computing power, long-term stable operation capabilities, and powerful data throughput, but they generate a significant amount of heat during operation. If this heat cannot be dissipated effectively and promptly, it can lead to system performance degradation or even failure. Therefore, server chassis are typically equipped with fan modules to achieve efficient heat dissipation, and maintenance requires the ability to quickly replace faulty fans to minimize downtime.

[0003] In traditional designs, fan modules are typically secured to the chassis base via a snap-fit ​​mechanism with a bracket and fasteners such as screws, rivets, or bolts. While this installation method ensures module stability during operation, maintenance and replacement require the sequential removal of multiple fasteners, a cumbersome and time-consuming process that is unsuitable for frequent maintenance or emergency replacements. To improve assembly and disassembly efficiency, some solutions incorporate handles into the mounting mechanism, allowing operators to pull the module out of the chassis. However, these handles are usually located on the front panel of the chassis and protrude outwards from the chassis surface. This not only disrupts the overall flatness of the front panel but also imposes additional limitations during server transportation and packaging. Specifically, during transport packaging, clearance holes must be pre-drilled in the cushioning foam, complicating the packaging structure and increasing material costs. Furthermore, during handling or stacking, the protruding handles are susceptible to chassis deformation or component damage due to stress, ultimately affecting the overall structural integrity and reliability of the server. Therefore, how to ensure the fan module is securely installed and can be quickly disassembled while avoiding additional structures protruding from the chassis surface has become a pressing technical problem. Summary of the Invention

[0004] This invention provides a quick-disassembly trigger-type snap-fit ​​structure, a fan module, and a server to solve the technical problem of inconvenient disassembly and assembly of existing fan module disassembly and assembly structures.

[0005] To address the aforementioned technical problems, this invention provides a trigger-type snap-fit ​​structure, comprising: a base with an installation cavity; an elastic lever disposed within the installation cavity, the elastic lever including an elastic arm, a pressing part connected to one end of the elastic arm, and a limiting protrusion disposed at the end of the elastic arm away from the pressing part; a rotating handle, one end of which is rotatably mounted on the outer wall of the base, and the other end having a first slot, the limiting protrusion being disposed within the first slot; an elastic reset member disposed within the installation cavity, used to reset the pressing part after the external force on the pressing part disappears; and a rotation drive member disposed on the outer wall of the base, used to provide power for the rotation of the rotating handle.

[0006] Furthermore, the mounting cavity has two opposing first through holes extending to the outer wall of the base on its two inner walls. The rotating handle has a U-shaped structure, and two opposing first slots are provided on the opposite side walls of the rotating handle. Two opposing elastic arms extend from both ends of the pressing part, and each elastic arm is provided with a limiting protrusion protruding from the outer wall of the elastic arm. The limiting protrusion can be detachably locked in the first slot after passing through the first through hole.

[0007] Furthermore, the mounting cavity has two opposing first deformation flanges on its two inner walls, and each elastic arm has a second deformation flange on its outer wall that mates with the first deformation flange. The first deformation flange is located on the movement path of the second deformation flange. When the second deformation flange moves toward the first deformation flange, the first deformation flange restricts the movement position of the second deformation flange, thereby forcing the elastic arm to bend and bring the limiting protrusion out of the first slot.

[0008] Furthermore, the first deformable flange has a first arc-shaped surface at its top and the second deformable flange has a second arc-shaped surface at its bottom that is opposite to the first arc-shaped surface. When the elastic arm slides along the inner wall of the mounting cavity, the second arc-shaped surface will slide along the surface of the first arc-shaped surface.

[0009] Furthermore, the angle between the limiting protrusion and the extension angle of the elastic arm is controlled within the range of 90°-115°.

[0010] Furthermore, the mounting cavity is provided with limiting brackets on both inner walls. Each limiting bracket includes a first folding plate and a second and a third folding plate disposed at both ends of the first folding plate. The second and third folding plates extend outward from the first folding plate. The third folding plate is disposed along the inner wall of the mounting cavity. The side walls of the first and second folding plates and the two adjacent inner walls of the mounting cavity form a limiting cavity. The elastic arm is slidably disposed within the limiting cavity.

[0011] Furthermore, the elastic reset member is a compression spring, the bottom of the mounting cavity is provided with a first positioning member, the bottom of the pressing part is provided with a second positioning member that is opposite to the first positioning member, the two ends of the inner hole of the compression spring are respectively sleeved on the first positioning member and the second positioning member, and the compression spring is used to drive the pressing part to reset so that the elastic arm slides in the limiting cavity.

[0012] Furthermore, the first slot sidewall has a guide notch extending through to the outer wall of the rotating handle, for the limiting protrusion to slide into the first slot. The top wall of the first slot has a limiting buckle that cooperates with the limiting protrusion. The limiting protrusion is located on the moving path of the limiting protrusion. When the limiting protrusion slides into the first slot through the guide notch, the restoring force of the compression spring will force the limiting protrusion to engage with the limiting buckle.

[0013] On the other hand, the present invention also provides a fan module, including a single fan and the trigger-type snap-fit ​​structure described in any of the preceding claims, wherein the single fan is disposed within the mounting cavity.

[0014] In another aspect, the present invention also provides a server, including a chassis with an opening and a fan module as described in claim 9, wherein a limiting slot is provided on the side wall of the opening, the base is detachably disposed in the opening, the end of the rotating handle is provided with a limiting buckle that cooperates with the limiting slot, the limiting buckle is detachably locked in the limiting slot, and the rotating drive is used to drive the rotating handle to rotate so that the limiting buckle disengages from the limiting slot.

[0015] Compared with existing technologies, the trigger-type snap-fit ​​structure, fan module, and server of this invention have the following advantages: This invention, through the rational arrangement of an elastic pressure bar and a rotating handle on the base, and the synergistic effect of an elastic reset component and a rotating drive component, achieves precise limiting and rapid unlocking of the rotating handle by a trigger-type latching structure. When unlocking is required, the operator simply applies pressure to the pressing part of the elastic pressure bar, causing the elastic wall of the pressure bar to slide within the mounting cavity. This disengages the limiting protrusion on the elastic wall from the first slot on the rotating handle, releasing the limiting constraint on the rotating handle. The rotating handle then automatically rotates and pops out under the elastic force of the rotating drive component. After releasing the finger, the elastic pressure bar automatically resets under the action of the elastic reset component. At this point, a light pull on the rotating handle allows for the smooth release of the fixed component, achieving rapid disassembly. When limiting is required, the operator simply pushes the base into the predetermined position and then rotates the rotating handle in the opposite direction, causing the first slot on the rotating handle to re-engage with the reset limiting protrusion on the elastic wall, thus completing a reliable lock. By incorporating an elastic pressure bar, a rotating handle, and dual elastic components on the base, the trigger-type snap-fit ​​structure achieves rapid triggering, reliable locking, and convenient unlocking. This significantly improves equipment connection and maintenance efficiency while reducing manual operation time. It also ensures the automatic reset of the rotating handle during disassembly and its secure locking after installation, effectively preventing loosening or detachment due to vibration or external forces, thus ensuring the overall safety and reliability of the connection. Furthermore, the retractable design of the rotating handle and the embedded design of the elastic pressure bar ensure structural strength while remaining flush with the outer surface of the equipment. This not only avoids potential bumps and accidental activation caused by protruding structures but also enhances the overall aesthetics and compactness. The operator can directly manipulate the handle through the recessed area, providing a comfortable feel and intuitive operation, further optimizing the human-machine interface. Therefore, this invention achieves rapid triggering, unlocking, and reliable locking of the trigger-type snap-fit ​​structure while also considering stability, safety, aesthetics, and ergonomic optimization, effectively solving the problems of inconvenient operation, unstable fixation, and poor user experience associated with existing snap-fit ​​structures.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0017] The accompanying drawings are provided for a better understanding of this solution and do not constitute a limitation of the invention. Wherein: Figure 1 This is a schematic diagram of the base from one perspective in a trigger-type snap-fit ​​structure provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the base from another perspective in a trigger-type snap-fit ​​structure provided by an embodiment of the present invention; Figure 3This is a schematic diagram of another perspective of a trigger-type snap-fit ​​structure provided in an embodiment of the present invention, in which an elastic pressure bar and a limiting bracket are provided on the base; Figure 4 This is a cross-sectional schematic diagram of a trigger-type snap-fit ​​structure provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the elastic pressure bar in a trigger-type buckle structure provided by an embodiment of the present invention; Figure 6 This is a schematic diagram of the rotating handle in a trigger-type buckle structure provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the rotating shaft and rotating drive component in a trigger-type snap-fit ​​structure provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the limiting bracket in a trigger-type snap-fit ​​structure provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the sliding button in a trigger-type snap-fit ​​structure provided in an embodiment of the present invention; Figure 10 This is an exploded view of the overall structure of a fan module provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the overall structure of a fan module and server chassis provided in an embodiment of the present invention; Figure 12 yes Figure 11 A partially enlarged structural diagram of point A in a server chassis is provided. Figure 13 This is a cross-sectional schematic diagram of the assembly and disassembly process of a fan module and a server chassis provided in an embodiment of the present invention.

[0018] In the diagram, 10 is the fan module; 11 is the base; 111 is the mounting cavity; 112 is the first through hole; 113 is the second through hole; 114 is the third through hole; 115 is the guide groove; 116 is the first positioning element; 117 is the first deformation flange; 118 is the limiting folding piece; 119 is the fixing pin; 12 is the elastic pressure bar; 121 is the pressing part; 122 is the elastic arm; 123 is the limiting protrusion; 124 is the second positioning element; 125 is the elastic folding plate; 126 is the second deformation flange; 13 is the rotating handle; 131 is the first slot; 132 is the second slot; 133 is the through hole; 134 is the limiting stop; 1341 is the first stop protrusion; 1342 is the second stop protrusion; 1 343. Limiting notch; 135. Guide notch; 136. Limiting buckle; 14. Elastic reset component; 15. Rotation drive component; 16. Rotation shaft; 17. Limiting bracket; 171. First folding plate; 172. Second folding plate; 173. Third folding plate; 174. Limiting cavity; 18. Sliding button; 181. Extension base; 1811. Operating groove; 1812. Adjustment hole; 182. Limiting plate; 183. Elastic stop block; 1831. Elastic connecting plate; 1832. Guide pressure plate; 19. Individual fan; 191. Fan terminal; 192. Shock absorber; 193. Fixing block; 20. Chassis; 21. Opening mouth; 22. Limiting bayonet; 23. Guide pin. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the directional terms such as “middle”, “top”, “bottom”, “upper”, “lower”, “inner”, and “outer” indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this invention.

[0021] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first," "second," "third," and "fourth" to define a feature may explicitly or implicitly include one or more of that feature, and in the description of this invention, "at least" means one or more, unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] For ease of explanation, the typical application scenarios of the rotary handle 13 will be further explained below: The rotary handle 13 is typically installed on various electronic devices or functional modules that require frequent inspection, regular maintenance, or rapid replacement, such as fan modules 10, heat dissipation components, and power modules. Its core function is to achieve reliable locking and efficient release between the component and the mounting carrier (such as the chassis 20, mounting frame, or support structure) through rotation. To ensure stability and safety under high-frequency use and complex operating conditions, the rotary handle 13 is usually designed with various limiting structures, such as slots, limiting holes, and positioning flanges on its side walls or ends, which cooperate with corresponding slots, positioning pins, or hooks on the mounting carrier to achieve precise locking and stable stopping in the non-triggered state. Under normal operating conditions, this structure can effectively prevent the component from loosening and displacement due to vibration, impact, or accidental operation, ensuring the overall operational safety and structural integrity of the equipment. Only after the operator releases the limit according to the preset triggering method (such as pressing down the elastic lever 12, tossing the touch component, or pushing and pulling the slider), can the handle 13 rotate freely, thereby achieving rapid unlocking and smooth disassembly of the component. This trigger-plus-limit collaborative control design not only achieves precise locking and rapid release of modular components, but also balances ease of operation, ergonomic experience, and maintenance efficiency within a limited installation space, meeting the development needs of modern electronic equipment that emphasize high integration, maintainability, and safety.

[0024] Reference Figure 1-6As shown, this embodiment of the invention provides a trigger-type snap-fit ​​structure, including a base 11, an elastic pressure bar 12, a rotating handle 13, an elastic reset member 14, and a rotating drive member 15. The base 11 has a mounting cavity 111; the elastic pressure bar 12 is disposed within the mounting cavity 111, and includes an elastic arm 122, a pressing part 121 connected to one end of the elastic arm 122, and a limiting protrusion 123 disposed at the end of the elastic arm 122 away from the pressing part 121; one end of the rotating handle 13 is rotatably disposed on the outer wall of the base 11, and the other end is provided with a first slot 131, in which the limiting protrusion 123 is placed; the elastic reset member 14 is disposed within the mounting cavity 111, used to reset the pressing part 121 after the external force on the pressing part 121 disappears; the rotating drive member 15 is disposed on the outer wall of the base 11, used to provide power for the rotation of the rotating handle 13.

[0025] In this embodiment of the invention, by reasonably setting the elastic pressure bar 12 and the rotating handle 13 on the base 11, and combining the synergistic effect of the elastic reset component 14 and the rotating drive component 15, the trigger-type buckle structure achieves precise positioning and rapid trigger unlocking of the rotating handle 13. When unlocking is required, the operator only needs to apply pressure to the pressing part 121 of the elastic lever 12 to drive the elastic arm 122 to slide within the mounting cavity 111. This causes the limiting protrusion 123 on the elastic arm 122 to disengage from the first slot 131 on the rotating handle 13, thereby releasing the limiting constraint on the rotating handle 13. The rotating handle 13 will automatically rotate and pop out under the elastic force of the rotating drive member 15. After releasing the finger, the elastic lever 12 will automatically reset under the action of the elastic reset member 14. At this time, only a light pull on the rotating handle 13 is needed to smoothly release the fixed part as a whole, achieving quick disassembly. When limiting is required, the operator only needs to push the base 11 into the predetermined position and then rotate the rotating handle 13 in the opposite direction to make the first slot 131 on the rotating handle 13 re-engage with the limiting protrusion 123 of the reset elastic arm 122, thus completing a reliable lock. By coordinating the elastic pressure bar 12, the rotating handle 13, and the dual elastic elements on the base 11, the trigger-type snap-fit ​​structure achieves rapid triggering, reliable locking, and convenient unlocking. This significantly improves equipment connection and maintenance efficiency and reduces manual operation time. Simultaneously, it ensures the automatic reset of the rotating handle 13 during disassembly and its stable locking after installation, effectively preventing loosening and detachment due to vibration or external forces, thus ensuring the safety and reliability of the overall connection. Furthermore, the retractable design of the rotating handle 13 and the embedded design of the elastic pressure bar 12 ensure structural strength while remaining flush with the outer surface of the equipment. This not only avoids potential bumps and accidental activation caused by protruding structures but also enhances the overall aesthetics and compactness. The operator can directly operate the mechanism through the recessed portion, providing a comfortable feel and intuitive use, further optimizing the human-machine interface. Therefore, this invention achieves rapid triggering, unlocking, and reliable locking of the trigger-type snap-fit ​​structure while also considering stability, safety, aesthetics, and ergonomic optimization, effectively solving the problems of inconvenient operation, unstable fixation, and poor user experience associated with existing snap-fit ​​structures.

[0026] When the operator applies downward pressure to the elastic lever 12, the elastic lever 12 is displaced along a predetermined sliding direction within the mounting cavity 111 provided on the base 11. This sliding not only causes the limiting protrusion 123 on the elastic lever 12 to move synchronously, disengaging it from the first slot 131 opened on the side wall of the rotating handle 13, thereby releasing the locking constraint on the rotating handle 13, but also causes a certain elastic deformation as the elastic lever 12 slides along the inner wall of the mounting cavity 111 during the sliding process. For example, taking the elastic lever 12 in this embodiment of the invention as an example, the elastic lever 12 includes an elastic arm 122 connected to the elastic reset member 14 and extending from the pressing part 121. The limiting protrusion 123 is disposed on the elastic arm 122 and is detachably locked in the first slot 131 to control the rotation of the rotating handle 13. When the pressing part 121 is pressed by an external force, the pressing part 121 drives the elastic arm 122 to move along the sliding direction. At the same time, the two ends of the elastic arm 122 are slightly warped or bent due to the action of unilateral force. This elastic deformation will cause the limiting protrusion 123 to slightly shift or warp relative to the engagement position of the slot, so that the locking surface of the limiting protrusion 123 gradually disengages from the blocking surface of the edge of the first slot 131, thereby further ensuring that the limiting protrusion 123 smoothly disengages from the slot and improving the reliability of the trigger-type buckle structure unlocking action. During this process, the sliding of the pressing part 121 provides the main vertical displacement, while the slight deformation of the elastic arm 122 provides lateral auxiliary adjustment, making the limiting protrusion 123 disengage from the slot more smoothly and avoiding jamming due to friction or minor interference. Furthermore, the guide structure within the mounting cavity 111 provides precise constraint on the sliding path of the elastic lever 12, guiding it to slide smoothly in a predetermined direction and preventing tilting or deviation. The elastic lever 12, connected to the elastic reset member 14, provides a controllable elastic restoring force, allowing the elastic lever 12 to automatically reset after the external force is removed, so that the limiting protrusion 123 returns to its initial position in the first slot 131 to be engaged, providing reliable conditions for the next locking. With the assistance of the sliding and deformation of the elastic pressure bar 12 and the coordinated mechanism of the reset of the elastic reset component 14, the limiting protrusion 123 can accurately and reliably disengage from and reset the slot of the rotating handle 13, thereby ensuring the smoothness, stability and high reliability of the trigger-type buckle structure in the unlocking process, and realizing the buckle function of convenient operation, stable locking and durability.

[0027] When the elastic lever 12 repositions the rotating handle 13, the purpose of reversing the rotation of the rotating handle 13 is to relock the first slot 131 with the limiting protrusion 123. After the disassembly operation is completed, the operator releases his finger, and the elastic lever 12 slides back to its original position along the inner wall of the mounting cavity 111 under the action of the elastic reset member 14, so that the limiting protrusion 123 returns to its initial position. The operator then rotates the rotating handle 13 in the opposite direction, so that the rotating handle 13 contacts the reset limiting protrusion 123 and continues to rotate. During this process, due to the abutment of the rotating handle 13, the U-shaped structure of the elastic lever 12 undergoes a slight deformation to adapt to the moving position of the first slot 131. When the first slot 131 enters the sliding range of the limiting protrusion 123, the pressure of the side wall of the rotating handle 13 on the limiting protrusion 123 disappears. Under the action of the elastic force of the elastic pressure bar 12 and the restoring force of the elastic reset member 14, the limiting protrusion 123 extends into the first slot 131 to achieve accurate locking and restriction, realize quick installation, and ensure the safety and stability of the operation process.

[0028] It should be noted that the snap-fit ​​method described in this embodiment of the invention can not only be a single-sided single-point snap-fit, but can also be designed as a double-sided double-point snap-fit ​​or a multi-point snap-fit ​​according to actual application requirements, so as to further improve the stability and force balance of the limiting position. Specifically, the snap-fit ​​structure formed between the limiting protrusion 123 on the elastic pressure bar 12 and the first slot 131 on the rotating handle 13 can achieve double-point or multi-point synchronous snap-fit ​​by setting multiple corresponding slots at different positions of the rotating handle 13, or by designing multiple limiting protrusions 123 on the elastic pressure bar 12. The multi-point snap-fit ​​structure can achieve a more uniform force distribution in a limited installation space, effectively reducing wear, loosening or snap-fit ​​failure caused by excessive local force during single-point snap-fit, thereby further enhancing the locking effect and structural reliability. In specific designs, a double-point or multi-point snap-fit ​​scheme is preferred, so that the rotating handle 13 is subjected to more balanced force in the limiting state, and can remain stable under complex working conditions such as vibration, impact or long-term operation, significantly reducing the risk of loosening and extending the service life of the overall structure. Meanwhile, combined with the trigger unlocking mechanism described in the embodiments of the present invention, the multi-point snap-fit ​​structure can still achieve overall synchronous unlocking through a single trigger operation, which not only ensures the convenience of operation, but also takes into account the snap-fit ​​strength and security, fully meeting the requirements for high reliability and high durability of equipment and module connections.

[0029] Reference Figure 1-6As shown, in an optional embodiment of the present invention, the mounting cavity 111 has two opposing first through holes 112 extending to the outer wall of the base 11 on its two inner walls. The rotating handle 13 has a U-shaped structure and two opposing first slots 131 are provided on its two side walls. The pressing part 121 extends two opposing elastic arms 122 from its two ends. Each elastic arm 122 is provided with a limiting protrusion 123 protruding from the outer wall of the elastic arm 122. The limiting protrusion 123 can be detachably locked in the first slot 131 after passing through the first through hole 112.

[0030] Specifically, by opening two opposing first through holes 112 on the two inner walls of the mounting cavity 111 of the base 11, extending to the outer wall of the base 11, and employing a U-shaped rotating handle 13, two opposing first slots 131 are opened on the opposing side walls of the rotating handle 13. Combined with the design of the elastic pressure bar 12, this achieves reliable locking and stable positioning of the rotating handle 13. The elastic pressure bar 12 includes a pressing part 121 connected to the elastic reset member 14, and two opposing elastic arms 122 extending from the end of the pressing part 121. The outer walls of the two elastic arms 122 are respectively provided with limiting protrusions 123 protruding from the outer wall of the folding rod. That is, the two limiting protrusions 123 are arranged on the outer walls of the elastic arms 122 facing opposite directions, so that after being inserted into the first through hole 112, they are locked in the first slot 131. The first through hole 112 provides the necessary guidance for the limiting protrusions to extend into and out of the first slot 131. When the limiting protrusion 123 passes through the first through hole 112, it can be detachably locked into the first slot 131 on the side wall of the rotating handle 13, thereby achieving dual-point limiting of the rotating handle 13. During operation, when the operator presses the pressing part 121, the pressing part 121 drives the elastic arm 122 to move along the sliding direction. At the same time, the two ends of the elastic arm 122 are slightly warped or bent due to the action of external force on one side, causing the limiting protrusion 123 to slightly shift relative to the direction of the first slot 131, thereby gradually disengaging from the locking surface of the first slot 131 and reliably unlocking the rotating handle 13. After the external force is removed, the elastic reset member 14 restores the elastic pressure bar 12 to the initial position, so that the limiting protrusion 123 returns to the initial position, so that when the rotating handle 13 reverses, the first slot 131 re-engages, and finally achieves a smooth reset. Due to its symmetrical structure and balanced force distribution, the handle 13 can evenly distribute stress when subjected to force or vibration, preventing wear, loosening, or failure caused by excessive local force on a single-point locking point, thus significantly improving the reliability of the limit switch. Simultaneously, during operation, the dual-point locking of the limit protrusion 123, in conjunction with the trigger mechanism of the elastic arm 122, enables smooth unlocking and stable resetting of the handle 13, ensuring convenient and stable operation. In summary, the use of two opposing limit protrusions 123 not only ensures smooth unlocking and reliable limit switch operation of the handle 13 through the coordinated sliding and elastic deformation, but also considers ease of manufacturing, force balance, and structural stability, making it particularly suitable for electronic equipment or module connection applications where high locking reliability and ease of maintenance are required.

[0031] In an optional embodiment of the present invention, both the elastic pressure bar 12 and the rotating handle 13 are designed in a U-shape. The main reason for this is that the elastic pressure bar 12 adopts a U-shape design and is made of a material with a certain degree of elasticity. Its main purpose is to match the mounting cavity 111 opened on the base 11, and at the same time provide sufficient space for the limiting protrusions 123 respectively provided on the outer walls of the two elastic arms 122. During operation, when the operator applies downward pressure to the top of the pressing part 121 with his finger, the elastic material of the elastic arm 122 can produce controllable deformation, causing the two side walls of the U-shaped structure to deform towards each other, thereby causing the limiting protrusions 123 to retract along the axial direction of the first through hole 112 and disengage from the first slot 131 on the rotating handle 13. It is by fully utilizing the elastic deformation characteristics of the elastic pressure bar 12 that the limiting protrusions 123 can be effectively controlled to slide into and out of the first slot 131, realizing the controllable triggering mechanism of the rotating handle 13, so that the rotating handle 13 can rotate smoothly under the elastic force of the rotating drive member 15. If the elastic lever 12 is made of rigid material, it will not deform during the pressing operation. The limiting protrusion 123 will be directly stuck on the first through hole 112 and the first slot 131, causing the rotating handle 13 to fail to be triggered to rotate smoothly. Therefore, by selecting elastic material and designing U-shaped structure, the disassembly operation is guaranteed to be smooth and controllable, and the operation process is guaranteed to be safe and reliable. At the same time, it provides the necessary structural support and functional guarantee for rapid assembly and disassembly. The rotating handle 13 also adopts a U-shaped structure. Its design can adapt to the shape of the base 11 and provide space for the elastic protrusions on both sides of the elastic pressure bar 12, so that the first slot 131 can be accurately fitted onto the limiting protrusion 123 to achieve a stable locking function. The rotating handle 13 is set on the outer wall of the base 11 and can be rotated through rotational installation. The specific installation method can be, for example, using rivets, bolts or hinges, so that the rotating handle 13 can rotate smoothly on the outer wall of the base 11 while maintaining structural strength and operational reliability. Two typical examples of rotating installation of the rotating handle 13 include: fixing the rotating handle 13 to the pivot hole on the outer wall of the base 11 with rivets, so that it can rotate around the rivet axis; fixing it to the reserved mounting hole with bolts, and placing washers or bushings between the bolts and the rotating handle 13 to ensure smooth and stable rotation, thereby achieving an efficient operating experience while ensuring reliability.

[0032] Furthermore, in this snap-fit ​​structure, the elastic reset component 14 and the rotation drive component 15 perform different adjustment functions, thus their common forms and installation methods also differ. The main function of the elastic reset component 14 is to drive the elastic pressure bar 12 to slide and reset within the mounting cavity 111, achieving automatic return of the limiting protrusion 123. Common forms include compression springs, tension springs, and elastic rubber bodies. A compression spring can be located at the bottom of the elastic pressure bar 12; when the elastic pressure bar 12 is pressed down or released, the compression spring provides a restoring force to return it to its original position. A tension spring can be fixed at one end to the upper part inside the mounting cavity 111, and the other end connected to the elastic pressure bar 12, achieving the reset of the pressure bar through the spring's tension. An elastic rubber body directly drives the elastic pressure bar 12 to return to its original position using its own elastic deformation. All these methods can achieve automatic sliding of the elastic pressure bar 12 along the axial direction of the first through hole 112. The function of the rotation drive component 15 is to enable the rotation handle 13 to rotate smoothly during disassembly operations, pushing the limiting stop 134 out of or into the limiting slot 22. Considering the requirement for a compact shape, compression springs or torsion springs are usually selected. Compression springs can be directly installed in the reserved mounting slots on the side wall of the base 11. When the handle 13 is rotated, the compression spring provides a rebound force to assist the handle in resetting. Torsion springs can be fixed between the side wall of the base 11 and the rotating shaft of the handle 13 through the spring shaft. During rotation, they provide torsional force to realize the rotation of the handle 13.

[0033] Reference Figure 4 and Figure 5 As shown, in an optional embodiment of the present invention, the mounting cavity 111 has two opposing first deformation flanges 117 on its two inner walls, and each elastic arm 122 has a second deformation flange 126 on its outer wall that cooperates with the first deformation flanges 117. The first deformation flanges 117 are located on the moving path of the second deformation flanges 126. When the second deformation flanges 126 move toward the first deformation flanges 117, the first deformation flanges 117 are used to limit the moving position of the second deformation flanges 126, so as to force the elastic arm 122 to bend and bring the limiting protrusion 123 out of the first slot 131.

[0034] Specifically, to further optimize the operating feel and the reliability of the mechanism, the mounting cavity 111 is provided with a first deformation flange 117 protruding from its surface on both inner walls, forming a stepped structure; the two elastic arms 122 are also provided with a second deformation flange 126 that cooperates with the first deformation flange 117 on their two outer walls. The second deformation flange 126 protrudes from the outer wall surface of the elastic arm 122 and is also arranged in a stepped manner. The second deformation flange 126 is located on the side of the elastic arm 122 near its free end. Normally, for ease of assembly and disassembly and reliable sliding, when the limiting protrusion 123 is still locked in the first slot 131, the outer wall of the second deformable flange 126 is tightly abutted against the inner wall of the mounting cavity 111, while the first deformable flange 117 contacts the outer wall of the elastic arm 122 without the second deformable flange 126. Simultaneously, the bottom of the second deformable flange 126 abuts against the top of the first deformable flange 117, forming an initial constraint state. This effectively ensures the stability of the second deformable flange 126 as it slides with the elastic arm 122. During the operator's pressing of the pressing part 121, the elastic arm 122 begins to deform elastically under force. Under the constraint and guidance of the first deformable flange 117, the second deformable flange 126 gradually moves from the inner wall of the mounting cavity 111 to the outer wall of the first deformable flange 117. Specifically, as the pressing part 121 moves downward, the bottom of the second deformable flange 126 maintains continuous contact with the top of the first deformable flange 117. Then, it slowly slides downward along the second deformable flange 126 (towards the bottom of the mounting cavity 111). Due to the limiting effect of the first deformable flange 117, the deformation of the elastic arm 122 gradually increases, forcing the outer wall of the second deformable flange 126 to gradually detach from the contact surface of the inner wall of the mounting cavity 111, and then contact the outer wall of the first deformable flange 117. As the contact surface between the outer walls of the first deformable flange 117 and the second deformable flange 126 increases, the two elastic arms 122 bend and deform towards each other, increasing the bending deformation. The limiting protrusion 123 can then slide axially along the first through hole 112, eventually disengaging from the first slot 131. This ensures that the limiting protrusion 123 can smoothly disengage from the first slot 131 while preventing excessive deflection or jamming of the elastic arm 122, thereby effectively driving the rotating handle 13 to complete a smooth rotation. To further optimize the smoothness of the first deformable flange 117 climbing the second deformable flange 126 and reduce operating force, the top of the first deformable flange 117 and the bottom of the second deformable flange 126 can be designed as mutually matching inclined or arc-shaped surfaces. This allows the second deformable flange 126 to slide along an arc-shaped trajectory over the outer edge of the step when "climbing" the side wall of the first deformable flange 117, reducing friction and wear on the bent rod and improving operational sensitivity and smoothness. Simultaneously, for manufacturing convenience, the second deformable flange 126 can be directly formed into a stepped structure by cutting the outer wall of the elastic arm 122, simplifying the process and improving machining accuracy and consistency. The first deformable flange 117 can also adopt the same manufacturing process.This design not only significantly improves the smoothness and safety of disassembly operations, but also ensures that the elastic arm 122 deforms stably along a predetermined trajectory during the force application process, enhancing the reliability of the release of the limiting protrusion 123, thereby further improving the overall ease of operation, stability and durability of the fan module 10.

[0035] It should be noted that, in order to ensure that the elastic arms 122 at both ends of the pressing part 121 can smoothly deform towards each other when the pressing part 121 is pressed down, so that the limiting protrusion 123 can smoothly exit the first slot 131, the extension angle of the two elastic arms 122 relative to the pressing part 121 is usually not designed to be perpendicular, but rather to be arranged at a certain angle outward. That is, the distance between the two elastic pressing parts 121 near the free end of the elastic arm 122 is greater than the distance on the side near the pressing part 121. This outwardly oriented inclined arrangement allows the side wall of the elastic arm 122 near the free end to fully contact the inner wall of the mounting cavity 111 when the limiting protrusion 123 is locked in the first slot 131, thereby forming a stable support surface. As the operator presses down on the pressing part 121, the elastic arms 122 deform in opposite directions under the action of the pressing part 121. The extension angle of the two elastic arms 122 relative to the pressing part 121 gradually tends to be perpendicular, and at the same time, the contact surface with the inner wall of the mounting cavity 111 moves downward along the mounting cavity 111, forming a controllable deformation trajectory. This process can effectively guide the limiting protrusion 123 to smoothly disengage from the first slot 131 without completely disengaging from the constraint of the first through hole 112, realizing the smooth rotation and reliable reset of the rotating handle 13. Through this design that gradually transitions from outward expansion and inclination to verticality, combined with the protruding limiting design of the first deformation flange 117 and the second deformation flange 126, the disassembly operation of the limiting protrusion 123 is smoother and less strenuous, while avoiding jamming or damage to the elastic arms 122 due to vertical arrangement or excessive deformation, significantly improving the stability, durability and operational safety of the entire mechanism.

[0036] To ensure sufficient elasticity, resilience, and durability of the elastic arm 122 during the pressing and resetting process of the pressing part 121, in this embodiment of the invention, the elastic arm 122 is preferably made of a highly elastic, fatigue-resistant engineering plastic material, such as polypropylene, polycarbonate, or nylon. The pressing part 121 itself can also be made of the above-mentioned materials, that is, the pressing part 121 and the elastic arm 122 are integrally formed, which can effectively ensure the connection strength between the two. These materials not only possess good elastic energy storage and release properties, but also maintain shape stability during repeated pressing operations, preventing permanent deformation of the pressing part 121. They also have good wear resistance and impact resistance, ensuring the elastic lever 12 is reliable and durable in long-term use. Furthermore, the material itself is lightweight, reducing the overall weight of the buckle structure and facilitating smooth operation. Specific materials can be freely selected according to actual engineering requirements. The above materials are only preferred options and do not constitute a limitation of the invention; their scope still falls within the technical solutions protected by this invention.

[0037] Reference Figure 4 and Figure 5 As shown, in an optional embodiment of the present invention, the top of the first deformable flange 117 is provided with a first arc-shaped surface, and the bottom of the second deformable flange 126 is provided with a second arc-shaped surface opposite to the first arc-shaped surface. When the elastic arm 122 slides along the inner wall of the mounting cavity 111, the second arc-shaped surface will slide along the surface of the first arc-shaped surface.

[0038] Specifically, the top of the first deformable flange 117 is set as a smoothly transitioning first arc-shaped surface, and the bottom of the second deformable flange 126 is set as a corresponding second arc-shaped surface. When the elastic arm 122 slides under force within the mounting cavity 111, the second arc-shaped surface can form a natural arc-shaped sliding path along the surface of the first arc-shaped surface, thereby achieving flexible climbing and crossing between the two flanges. Compared with traditional right-angle or sharp edge designs, the initial contact surfaces of the first deformable flange 117 and the second deformable flange 126 are designed with arc-shaped surfaces, which can significantly reduce local friction and stress concentration at the contact point. The transition of the arc-shaped surfaces is smoother. When the elastic arm 122 slides in the mounting cavity 111 along a predetermined direction, the second arc-shaped surface slides along the surface of the first arc-shaped surface, realizing the gradual disengagement of the limiting protrusion 123. This forces the elastic arm 122 to produce controllable and uniform deformation along the designed trajectory, so that the limiting protrusion 123 will not suddenly spring open during the process of disengaging from the slot, thereby avoiding the risk of damage or jamming of the limiting protrusion 123. Meanwhile, the curved surface provides a natural guiding effect, guiding the limiting protrusion 123 to smoothly slide out of the first slot 131 along a predetermined trajectory, reducing friction and local stress concentration, ensuring the elastic arm 122 is stable and reliable during deformation, and realizing smooth unlocking and long-term stable use of the trigger-type buckle structure. This design not only improves the sensitivity and comfort of operation, but also effectively enhances the durability and locking reliability of the structure. It avoids problems such as jamming and stuckness caused by right-angle limiting surfaces, allowing the limiting protrusion 123 to smoothly climb and release when it disengages from the first slot 131. In addition, the curved guiding surface can provide a more natural force transition during the deformation of the folding rod, making the deformation of the elastic arm 122 smooth, reducing structural fatigue and wear, and extending service life.

[0039] This design also effectively reduces the operator's force requirements: when the operator presses the elastic lever 12, the second arc-shaped surface can smoothly slide with the help of the smooth guidance of the first arc-shaped surface, avoiding abrupt resistance when the second deformable flange 126 climbs the outer wall of the first deformable flange 117, thus making the trigger-type buckle structure exhibit higher sensitivity and smoothness during the unlocking process. In terms of manufacturing, the arc-shaped flange structure can be formed in one step through precision cutting or molding, avoiding the subsequent chamfering or polishing processes required for processing right-angled or sharp-angled edges, simplifying the process and improving processing consistency. In summary, designing the top of the first deformable flange 117 and the bottom of the second deformable flange 126 as mutually matching arc-shaped surfaces not only optimizes the guiding effect of the limit release process and avoids the jamming problem caused by right-angled or sharp-angled edge limits, but also reduces friction and operating force, improving the smoothness, reliability, and structural durability of the unlocking operation.

[0040] Reference Figure 4 and Figure 5 As shown, in an optional embodiment of the present invention, the angle range of the extension angle between the limiting protrusion 123 and the elastic arm 122 is controlled within 90°-115°.

[0041] Specifically, designing the extension angle of the limiting protrusion 123 and the elastic arm 122 within the range of 90°-115° has significant beneficial effects. First, this angle range provides a moderate slope for the sliding of the limiting protrusion 123, preventing it from getting stuck directly at the first through hole 112 during operation. Instead, it allows the protrusion to slide smoothly along the first through hole 112, forming a natural guide surface that guides the limiting protrusion 123 to smoothly and reliably exit the first slot 131 on the side wall of the rotating handle 13. This design makes the disengagement process of the limiting protrusion 123 smooth, avoiding the risk of jamming or damage that may occur with traditional right-angle structures. Second, this angle range is not completely perpendicular to the surface of the elastic arm 122, but is slightly tilted upwards at a small angle. When the operator presses down on the pressing part 121, as the elastic wall 122 slides, the limiting protrusion 123 slides out along the first through hole 112 at an inclined angle, achieving smooth and controllable disengagement. This tilt angle is neither too small, which would increase friction between the limiting protrusion 123 and the slot, making operation difficult, nor too large, which would cause the elastic arm 122 to be too sensitive during slight operation and spring back prematurely, thus losing control. In summary, by controlling the extension angle of the limiting protrusion 123 and the elastic arm 122 to 90°-115°, combined with the tilt setting, it is not only ensured that the limiting protrusion 123 can smoothly disengage from the first slot 131 along the predetermined trajectory, but also the operating feel is optimized, and the smoothness, reliability, and durability of the trigger-type latch structure are improved.

[0042] Specifically, controlling the extension angle of the limiting protrusion 123 and the elastic arm 122 between 90° and 115° has significant design advantages. When the angle is close to 90°, the limiting protrusion 123 is relatively perpendicular to the surface of the elastic arm 122, and the action is stable when disengaging from the first slot 131. However, if the angle is too small (much less than 90°), the limiting protrusion 123 may easily get stuck due to increased friction when sliding out of the first through hole 112 penetrating the outer wall of the base 11, resulting in increased operating resistance and possibly even abnormal force on the elastic arm 122, increasing the risk of wear or damage to the limiting protrusion 123. Conversely, when the angle is close to 115°, the limiting protrusion 123 is more inclined relative to the surface of the lever, making it more sensitive when disengaging from the slot and easier to operate. However, if the angle is too large (much greater than 115°), the protrusion may disengage from the slot prematurely under slight operation, losing controllability and thus reducing locking reliability. Therefore, setting the turning angle within the range of 90° to 115° ensures both smoothness of the disengagement process and controllability of the operation, avoiding adverse effects caused by angles that are too small or too large.

[0043] Furthermore, to ensure that the limiting protrusion 123 can slide smoothly along the first through hole 112 during the process of disengaging from the first slot 131, the diameter of the first through hole 112 should be larger than the outer diameter of the limiting protrusion 123. This way, when the elastic arm 122 moves downward or undergoes elastic deformation, the protrusion has sufficient space to slide out along the through hole, avoiding interference with the hole wall. The reasonable matching of the hole diameter and the angle allows the elastic arm 122 to deform stably during operation, while simultaneously driving the limiting protrusion 123 to reliably disengage from the first slot 131. This achieves efficient, smooth, and controllable action during the unlocking and resetting process of the trigger-type buckle structure, improving the smoothness, stability, and durability of the entire structure.

[0044] Reference Figure 8 As shown, in an optional embodiment of the present invention, the mounting cavity 111 is provided with limiting brackets 17 on both inner walls. Each limiting bracket 17 includes a first folding plate 171 and a second folding plate 172 and a third folding plate 173 disposed at both ends of the first folding plate 171. The second folding plate 172 and the third folding plate 173 extend outward from the first folding plate 171. The third folding plate 173 is disposed along the inner wall of the mounting cavity 111. The side walls of the first folding plate 171 and the second folding plate 172 and the two adjacent inner walls of the mounting cavity 111 form a limiting cavity 174. The elastic arm 122 is slidably disposed in the limiting cavity 174.

[0045] Specifically, limiting brackets 17 are provided on the two opposing inner walls of the mounting cavity 111. Each limiting bracket 17 consists of a first folding plate 171 and a second folding plate 172 and a third folding plate 173 located at its two ends. The second folding plate 172 and the third folding plate 173 extend outward from the first folding plate 171 in the opposite direction, forming a stable limiting structure similar to a straight-edged Z-shape. The third folding plate 173 is fixed to the inner wall of the mounting cavity 111, while the side walls of the first folding plate 171 and the second folding plate 172 together enclose the two adjacent inner walls of the mounting cavity 111, forming an independent limiting cavity 174. This limiting cavity 174 can effectively constrain the sliding of the elastic arm 122, allowing it to slide smoothly along a predetermined trajectory during the force application process, avoiding deviation or tilting, and ensuring the smoothness and reliability of the elastic arm 122 when pressed, released, and reset by the pressing part 121. Relying solely on the elastic force of the elastic reset member 14 and the contact force between the elastic arm 122 and the inner wall of the mounting cavity 111 may lead to skewness or uneven force distribution on the elastic lever 12 during long-term use or manual operation, thus affecting operational smoothness and increasing the risk of damage to the elastic arm 122, or even causing the elastic lever 12 to fail. However, by setting the limiting bracket 17 and forming the limiting cavity 174, the sliding trajectory of the elastic arm 122 can be effectively constrained, preventing the elastic arm 122 from deviating and ensuring that the elastic arm 122 always moves along a predetermined trajectory during the pressing, releasing, and reset processes of the pressing part 121. This not only significantly improves the operational stability, reliability, and durability of the elastic lever 12 mechanism but also effectively reduces component wear and the risk of misoperation, ensuring the smoothness and safety of the entire mechanism during long-term use. More importantly, the setting of the limiting bracket 17 can effectively control the deformation of the elastic arm 122. It can not only effectively prevent the elastic arm 122 from breaking due to excessive deformation, but also prevent the limiting protrusion 123 from completely exiting the first through hole 112, which would cause the limiting protrusion 123 to recover slowly or even fail.

[0046] Reference Figure 4 and Figure 5 As shown, in an optional embodiment of the present invention, the elastic reset member 14 is a compression spring, the bottom of the mounting cavity 111 is provided with a first positioning member 116, the bottom of the pressing part 121 is provided with a second positioning member 124 which is opposite to the first positioning member 116, the two ends of the inner hole of the compression spring are respectively sleeved on the first positioning member 116 and the second positioning member 124, and the compression spring is used to drive the pressing part 121 to reset so that the elastic arm 122 slides in the limiting cavity 174.

[0047] Specifically, by designing the elastic reset member 14 as a compression spring installed at the bottom of the mounting cavity 111, and providing a pressing part 121 on the top of the compression spring, combined with the elastic arm 122 structure extending from both ends of the pressing part 121, the compression spring can generate an upward reset force after being compressed and deformed, effectively driving the pressing part 121 back to its original position, thereby driving the elastic arm 122 to slide smoothly along the inner wall of the mounting cavity 111. The first positioning member 116 at the bottom of the mounting cavity 111 and the second positioning member 124 at the bottom of the pressing part 121 cooperate with each other, so that both ends of the inner hole of the compression spring are respectively fitted onto them. This not only ensures the installation stability and guidance of the compression spring during the force process, avoiding jamming and wear caused by spring offset or tilting, but also forms an effective limiting structure.

[0048] The first positioning member 116 and the second positioning member 124, while guiding the movement, also constrain the compression stroke of the compression spring, preventing the pressing part 121 from being pressed down too low during operation, thereby avoiding excessive deformation or even failure of the compression spring. In actual use, when the operator presses the pressing part 121, the elastic arm 122 undergoes elastic deformation, causing the limiting protrusion 123 to disengage from the first slot 131. During this process, due to the limiting effect of the first positioning member 116 and the second positioning member 124, the limiting protrusion 123 only needs to disengage from the first slot 131 to unlock, without having to completely disengage from the first through hole 112, thus avoiding the risk of the limiting protrusion 123 detaching from the base 11 due to excessive pressure or causing abnormal shaking. On the one hand, it ensures that the compression spring works within a reasonable range, avoids damage caused by overpressure, and extends the service life of the spring and related components; on the other hand, it effectively limits the range of motion of the pressing part 121 and the elastic arm 122, so that the limiting protrusion 123 moves clearly and with a moderate range during the unlocking process, ensuring that the disassembly and assembly operation is both smooth and convenient, as well as safe and reliable.

[0049] Furthermore, to ensure sufficient elastic restoring force of the elastic lever 12 during operation, the number of compression springs is appropriately increased in this embodiment of the invention, preferably two, to provide stable and sufficient restoring force. Simultaneously, to further enhance support and return effect, an optional embodiment of the invention also includes an elastic folding plate 125 disposed at the bottom of the pressing part 121. The elastic folding plate 125 extends from the bottom of the pressing part 121 towards the bottom of the mounting cavity 111, and can work in conjunction with the compression springs to provide good elastic restoring force. Preferably, two elastic folding plates 125 are provided, located between the two compression springs, with their free ends (bottoms) contacting the bottom of the mounting cavity 111, thereby providing additional stable support for the pressing part 121 and the elastic arm 122 during the pressing of the elastic lever 12. This design not only prevents the elastic lever 12 from deflecting or tilting during the pressing operation, but also effectively improves the reliability and consistency of the restoring process. The combination of the elastic folding plate 125 and multiple sets of compression springs makes the reset force of the elastic pressure bar 12 more sufficient and uniform, ensuring that the limiting protrusion 123 can be smoothly reset after it is disengaged from the first slot 131. At the same time, the elastic folding plate 125 at the bottom provides additional support, effectively preventing the pressing part 121 and the elastic arm 122 from deflecting, tilting or shaking during the pressing process, thereby improving the smoothness, safety and stability of the triggering operation and the overall structure.

[0050] Reference Figure 6 and Figure 7As shown, to ensure the stability of the rotation of the handle 13, the base 11 is also provided with two rotating shafts 16, and the rotation drive component 15 is preferably a V-shaped torsion spring, which is two in number and corresponds to the rotating shaft 16 respectively. The V-shaped torsion spring includes a torsion spring body and a first spring arm and a second spring arm extending from the torsion spring body respectively. The base 11 also has a second through hole 113 through the two outer walls to the mounting cavity 111. The handle 13 is provided with a second slot 132 on the two inner walls. The rotating shaft 16 passes through the second through hole 113 and is connected to the inner wall of the second slot 132. The first spring arm is fixed to the inner wall of the mounting cavity 111. The torsion spring body passes through the second through hole 113 and is sleeved on the outside of the rotating shaft 16. The second spring arm is embedded in the second slot 132 to drive the handle 13 to rotate around the axis of the rotating shaft 16. By adding a rotating shaft 16 to the base 11, a stable and reliable rotation fulcrum is formed for the rotating handle 13, and the overall structural stress rationality and operational smoothness are significantly improved. After passing through the second through hole 113, the rotating shaft 16 can be directly fixed to the inner wall of the second slot 132 of the rotating handle 13, achieving a simple and stable installation. Alternatively, a through hole 133 extending to the second slot 132 can be opened on the side wall of the rotating handle 13, allowing the rotating shaft 16 to be inserted and locked more flexibly, further enhancing the convenience and reliability of assembly. Preferably, the rotating shaft 16 uses a riveting pin. The riveting pin passes through the through hole 133 and the second through hole 113, rotatably mounting the rotating handle 13 on the base 11. The riveting pin not only possesses excellent strength and durability, capable of withstanding frequent rotation and external impacts over a long period, but also simplifies processing and assembly procedures, reduces additional parts and process steps, thereby lowering production costs and ensuring product consistency. Overall, the design balances structural stability, ease of assembly, and manufacturing economy, laying a solid foundation for the reliable operation of the rotary handle 13.

[0051] Meanwhile, the rotation drive component 15 preferably adopts a V-shaped torsion spring, which consists of a torsion spring body and a first spring arm and a second spring arm extending from both ends of the body. The torsion spring body is essentially a spring component with elastic energy storage and release functions, and it has an inner hole. When passing through the second through hole 113, it can be directly sleeved on the outside of the rotation shaft 16 and reliably positioned under the constraint of the rotation shaft 16, thereby effectively limiting its position and deformation range and avoiding unnecessary displacement or excessive angular deviation caused by external forces or structural tolerances. During use, the first spring arm is fixedly installed on the inner wall of the mounting cavity 111, and the second spring arm is embedded in the second slot 132 of the rotation handle 13. When the limiting protrusion 123 disengages from the first slot 131 of the rotation handle 13, the torsion spring body is released from its force. That is, the first spring arm can be used as the force support point, and then the second spring arm applies a clear, stable and reliable torque to the rotation handle 13, pushing the rotation handle 13 to rotate smoothly and steadily around the axis of the rotation shaft 16. With this structure, the handle 13 can obtain a stable driving force during the opening process, avoiding jamming, malfunction or damage caused by improper operation or external interference.

[0052] It should be noted that a V-type torsion spring is a common elastic element. Its basic structure consists of a torsion spring body and two spring arms extending from both ends of the torsion spring body. The first and second spring arms are arranged at a V-shaped angle, hence the name. The torsion spring body is usually helical and is essentially a spring with elastic energy storage and release functions. Its center forms an inner hole, which can be directly fitted onto a rotating shaft or other support during installation to form a reliable mounting base. Compared with ordinary single-arm torsion springs, V-type torsion springs, thanks to the synergistic effect of the first and second spring arms, can provide more stable torque output and clear directional constraint, thus having advantages in both structural compactness and functional stability. In practical applications, the first spring arm of the V-type torsion spring is usually fixedly installed on a stationary component (such as the inner wall of the housing 20 or mounting cavity 111), while the second spring arm abuts against a rotatable component (such as the rotating handle 13) or is embedded in a specific slot. When the rotating component rotates, the spring arm is forced to deflect, causing the torsion spring body to undergo elastic deformation and store energy. After the external force is released, the torsion spring releases the stored elastic potential energy through the spring arm, applying a reset torque to the rotating component, enabling it to automatically return to its original position or provide continuous support. In summary, the V-shaped torsion spring is not only compact and easy to install, but also achieves stable positioning simply by fitting its inner hole into the rotating shaft. Furthermore, the double-spring arm design applies a clear and balanced torque to the rotating component, preventing jamming due to uneven deflection. In addition, by rationally setting the V-shaped angle between the first and second spring arms, the rotation angle range of the rotating component can be effectively controlled, thus preventing excessive ejection of components and potential safety hazards, ensuring the reliability and safety of the overall mechanism.

[0053] Reference Figure 6 As shown, in an optional embodiment of the present invention, the side wall of the first slot 131 is provided with a guide notch 135 extending through to the outer wall of the rotating handle 13, for the limiting protrusion 123 to slide into the first slot 131. The top wall of the first slot 131 is provided with a limiting buckle 136 that cooperates with the limiting protrusion 123. The limiting protrusion 123 is located on the moving path of the limiting protrusion 123. When the limiting protrusion 123 slides into the first slot 131 through the guide notch 135, the restoring force of the compression spring will force the limiting protrusion 123 to engage with the limiting buckle 136.

[0054] Specifically, a limiting protrusion 123 is disposed on the outer wall of the elastic arm 122. The U-shaped rotating handle 13 has two opposing first slots 131 on its two inner walls. Each first slot 131 has a guide notch 135 extending through to the other outer wall of the rotating handle 13 to guide the limiting protrusion 123 to slide smoothly into the first slot 131. When the operator rotates the rotating handle 13 in the opposite direction, the limiting protrusion 123 will enter the first slot 131 through the guide notch 135, avoiding direct hard contact between the limiting protrusion 123 and the side wall of the rotating handle 13, thus preventing jamming or displacement and achieving smoother and more accurate positioning. Meanwhile, the top wall of the first slot 131 is provided with a limiting buckle 136 that cooperates with the limiting protrusion 123. It is located on the moving path of the limiting protrusion 123. When the limiting protrusion 123 slides toward the first slot 131 through the guide notch 135, it will first contact the limiting buckle 136. During the process of rotating the handle 13, the elastic arm 122 undergoes a slight deformation under the constraint of the limiting buckle 136 on the limiting protrusion 123, so that the limiting protrusion 123 slides smoothly along the guide surface of the outer wall of the limiting buckle 136. When the limiting protrusion 123 disengages from the buckle, under the restoring force of the elastic reset member 14, i.e., the compression spring and the elastic folding plate 125, the limiting protrusion 123 slides into the first slot 131 and finally engages with the limiting buckle 136, thus realizing the limiting function of the limiting protrusion 123. On the one hand, the guide notch 135 guides the limiting protrusion 123, which can prevent the protrusion from shifting or getting stuck during operation, thus achieving smooth installation and disassembly. On the other hand, the cooperation between the limiting buckle 136 and the elastic arm 122 not only ensures the accurate positioning of the limiting protrusion 123, but also uses the spring restoring force to achieve a stable snap-fit, thereby improving the safety, reliability and durability during operation.

[0055] It should be noted that in the optional embodiments of the present invention, even if the inner wall of the first slot 131 is not provided with a guide notch 135, the limiting protrusion 123 can still slide smoothly into the first slot 131. However, providing a guide notch 135 is the preferred solution, which can further improve the smoothness of sliding and the reliability of operation. When the guide notch 135 is not provided, the principle is that the elastic arm 122 can undergo elastic deformation during operation: when the operator rotates the handle 13 in the opposite direction and squeezes the limiting protrusion 123, the handle 13 continuously applies pressure to the limiting protrusion 123, and the elastic arm 122 will produce a deflection and elastic rebound effect, guiding the limiting protrusion 123 to slide along the direction of the first through hole 112. As the angle of the handle 13 rotates, after the first slot 131 enters the moving path of the limiting protrusion 123, the handle 13 releases the pressure on the limiting protrusion 123. Under the rebound force of the elastic arm 122, the limiting protrusion 123 is able to slide smoothly into the first slot 131. The natural deformation of the elastic arm 122 eliminates the need for an additional guide notch 135, effectively preventing the limiting protrusion 123 from jamming or shifting during operation, thus improving the reliability of installation and disassembly.

[0056] Of course, if the design does not include the guide notch 135, the dimensions of the limiting protrusion 123 extending beyond the first through hole 112 must be precisely optimized during the design process. This is to prevent the limiting protrusion 123 from extending too far, which could lead to an excessively large contact area with the rotating handle 13, increasing the risk of jamming and operational resistance, affecting operational smoothness, and even causing the limiting protrusion 123 to jam the rotating handle 13, resulting in limiting failure. Therefore, the length of the limiting protrusion 123 should be reasonably controlled so that it can smoothly slide into the first slot 131 along a predetermined trajectory under the action of the elastic arm 122. To further enhance the smoothness and safety of sliding, the surface of the limiting protrusion 123 in contact with the rotating handle 13 can be designed as an inclined surface or an arc-shaped guide surface. Simultaneously, a matching inclined or arc-shaped structure can be provided at the corresponding position of the rotating handle 13, thereby providing a smooth guide path for the limiting protrusion 123 during operation. With this design, the limiting protrusion 123 can be effectively guided regardless of whether the guide notch 135 is provided, achieving smooth and precise engagement into the first slot 131. This structure not only ensures the stability and safety of the rotating handle 13 during operation but also significantly improves the convenience and reliability of installation and disassembly. Simultaneously, this design provides flexible engineering implementation space, allowing the cooperation between the limiting protrusion 123, the elastic arm 122, and the rotating handle 13 to be freely optimized according to actual engineering needs, ensuring smooth operation while also considering structural durability and safety.

[0057] Reference Figure 9As shown, in an optional embodiment of the present invention, in order to facilitate the operator's hand operation of the elastic lever 12, the base 11 is also provided with a third through hole 114. A sliding button 18 is provided in the third through hole 114. The sliding button 18 includes an extension base 181 passing through the third through hole 114 to the mounting cavity 111 and a limiting plate 182 provided on the extension base 181. The extension base 181 is connected to the pressing part 121. Elastic blocks 183 protruding from the outer surface of the extension base 181 are provided on both outer walls of the extension base 181. The elastic blocks 183 abut against the inner wall of the mounting cavity 111. The side wall of the limiting plate 182 abuts against the outer wall of the base 11 to limit the movement position of the sliding button 18.

[0058] Specifically, a sliding button 18 is provided within the third through hole 114. The sliding button 18 includes an extension base 181 extending through the third through hole 114 to the mounting cavity 111, and a limiting plate 182 provided on the extension base 181. The extension base 181 abuts against the top of the pressing part 121, and elastic blocks 183 protruding from the surface of the extension base 181 are provided on its opposite outer walls. The elastic blocks 183 contact the inner wall of the mounting cavity 111, thereby stabilizing the position of the sliding button 18. It is worth noting that an appropriate gap is maintained between the elastic blocks 183 and the limiting plate 182, so that the sliding button 18 can be effectively constrained within the third through hole 114 while moving smoothly. The side wall of the limiting plate 182 abuts against the outer wall of the base 11, precisely limiting the range of motion of the sliding button 18 to the side wall of the third through hole 114. This structural design not only ensures that the sliding button 18 is stable and reliable during operation, preventing misoperation due to excessive displacement, but also makes it easy for the operator to push the sliding button 18, improving the overall safety and convenience of operation. It also ensures that the elastic lever 12 can maintain good positioning and stability even after repeated use.

[0059] Meanwhile, by setting the sliding button 18, the operator's fingers can be effectively prevented from accidentally entering the third through hole 114, and the elastic pressure bar 12 can be prevented from pinching the fingers under the restoring force of the elastic reset member 14, thus significantly improving the safety of use. Secondly, the sliding button 18 provides a convenient and controllable interface for the operation of the pressing part 121, making the pushing, releasing and resetting process smoother, and reducing the operational difficulties and risks of misoperation that may be caused by direct contact with the pressing part 121. In order to further optimize the operating feel, the side wall of the limiting plate 182 can be provided with a groove for easy finger gripping, or textures or protrusions can be provided on the surface of the limiting plate 182 to enhance the grip and friction, so that the operator can easily push the sliding button 18. Meanwhile, the sliding button 18 features a well-designed combination of the extension base 181 and the elastic stop 183: the elastic stop 183 on both sides of the extension base 181 not only provides stable support during sliding but also facilitates installation—during installation, simply press the elastic stop 183 lightly to ensure it can smoothly pass through the third through hole 114 into the mounting cavity 111, and then automatically spring back within the mounting cavity 111 to achieve a limit, preventing the extension base 181 from sliding out of the third through hole 114 at will. This design balances ease of operation and ease of installation, ensuring the sliding button 18 remains stable and precise during use and installation, further enhancing the operational safety, reliability, and durability of the entire elastic lever 12 mechanism.

[0060] The elastic stop 183 includes an elastic connecting plate 1831 and a guide pressure plate 1832 protruding from the surface of the elastic connecting plate 1831. The side wall of the limiting plate 182 has an operating groove 1811 extending into the extension base 181. The opposite side walls of the extension base 181 have adjustment holes 1812 extending into the operating groove 1811 for bending of the elastic connecting plate 1831. One end of the elastic connecting plate 1831 is located on the inner wall of the adjustment hole 1812, and the other end is connected to the guide pressure plate 1832. The guide pressure plate 1832 is arranged parallel to the limiting plate 182, and the guide pressure plate 1832 abuts against the inner wall of the mounting cavity 111.

[0061] Specifically, the elastic stop 183 is composed of an elastic connecting plate 1831 and a guide pressure plate 1832 protruding from its surface, forming a flexible yet stable limiting and guiding system. The side wall of the limiting plate 182 has an operating groove 1811 extending into the interior of the extension base 181. The operating groove 1811 provides the operator with convenient hand-pressing space, making the sliding button 18 smoother and easier to push, reducing finger fatigue and the possibility of misoperation. Secondly, the operating groove 1811 cooperates with the adjustment holes 1812 on both sides of the extension base 181, providing sufficient bending deformation space for the elastic connecting plate 1831, ensuring that the elastic connecting plate 1831 can generate the necessary flexible response without obstruction during operation, thereby ensuring the stable function of the elastic stop 183. The guide pressure plate 1832 is arranged parallel to the limiting plate 182 and is in close contact with the inner wall of the mounting cavity 111, forming a reliable and stable guiding surface during sliding, thus creating a continuous, low-friction sliding channel. This design ensures that the sliding button 18 moves stably along a predetermined trajectory when pushed up and down, with smooth movement and no shaking or jamming. This optimized arrangement makes the operation of the sliding button 18 more precise and effortless, while significantly improving the overall smoothness and controllability of the elastic lever 12 mechanism. At the same time, the low-friction design reduces wear between parts, lowers operating resistance, extends the service life of the mechanism, and ensures that the elastic lever 12 mechanism maintains reliability and safety during long-term repeated use, achieving a stable, durable, and efficient operating experience.

[0062] It should be noted that the material of the elastic connecting plate 1831 should possess good elasticity, fatigue resistance, and a certain strength to ensure reliable bending deformation without permanent deformation or breakage during long-term repeated sliding and stress. Engineering plastics with elastic recovery capabilities, such as polyurethane, polyamide, or other high-molecular elastic materials, are preferred. These materials not only have good flexibility and wear resistance but are also easy to mold and process, ensuring that the elastic connecting plate 1831 can achieve the required bending deformation within a limited space. Simultaneously, the material should possess certain temperature resistance and aging resistance to meet the usage requirements of the fan module 10 under long-term operation or different environmental conditions.

[0063] Reference Figure 10 As shown, this embodiment of the invention also provides a fan module 10, including a single fan 19 and the aforementioned trigger-type snap-fit ​​structure, wherein the single fan 19 is disposed in the mounting cavity 111 of the base 11.

[0064] The base 11 of the fan module 10 is composed of multiple sheet metal panels, forming an overall frame with a mounting cavity 111. This frame typically includes side panels, a front panel, a bottom panel, and a cover plate. The organic combination of these panels creates a stable and reliable overall structure. Within the mounting cavity 111, a single fan 19 is installed. The single fan 19 is equipped with a fan terminal block 191, a vibration damping block 192, and a fixing block 193. To facilitate the installation of the single fan 19, the base 11 is also equipped with a limiting flap 118 and fixing pins 119. The single fan 19 is used for airflow and heat dissipation; the fan terminal block 191 is used to connect to the control panel and power supply for electrical power; the vibration damping block 192 is used to reduce vibration and impact during fan operation; the limiting flap 118 provides guidance and front-to-back limiting functions; and the fixing pins 119 are used to fix the fan position and restrict its front-to-back movement. A total of eight pins are provided. In terms of specific layout, the single fan 19 is located at the center of the mounting cavity 111, and its front and rear ends are fixed by fixing pins 119 to ensure the stability and safety of the fan in the front-back direction. Vibration damping blocks 192 are set on both sides and the bottom surface of the sheet metal base 11, supported by materials such as cotton, foam, or sponge, and are used to contact the sides and bottom surface of the single fan 19 to achieve shock absorption and buffering. Limiting flaps 118 are set on the base plate, generally four in number, and contact the bottom of the fan when it is installed downwards, serving both as a guide and limiting forward and backward movement to ensure accurate installation. The fan terminal 191 is fixed to the fixing block 193 and electrically connected to the control panel and power supply, thereby ensuring the normal power supply and control function of the fan. It should be noted that the number of sheet metal plates, the material of the vibration damping blocks 192, and the number and arrangement of the fixing pins 119 and limiting flaps 118 are only one optional embodiment of the present invention and should not be considered as a limitation on the scope of protection of the present invention. Their main purpose is to provide a feasible implementation scheme, and appropriate selection and adjustment can be made according to specific application requirements to achieve the same or equivalent functional effects.

[0065] Reference Figure 11-13 As shown, this embodiment of the invention also provides a server, including a chassis 20 with an opening 21 and a fan module 10 equipped with a trigger-type latch structure. A limit latch is provided on the side wall of the opening 21. A base 11 is detachably disposed in the opening 21. A limit stop 134 is provided at the end of the rotating handle 13 to cooperate with the limit latch. The limit stop 134 is detachably latched in the limit latch 22. A rotating drive 15 is used to drive the rotating handle 13 to rotate so that the limit stop 134 disengages from the limit latch 22.

[0066] Specifically, by reasonably setting the elastic pressure bar 12 and the rotating handle 13 on the base 11, and combining the synergistic effect of the elastic reset component 14 and the rotating drive component 15, the fan module 10 can be quickly assembled and efficiently disassembled in the chassis 20. When the fan module 10 needs to be disassembled, the operator only needs to insert his finger into the first through hole 112 and apply downward pressure to the top of the elastic pressure bar 12. This will cause the elastic pressure bar 12 to slide in the mounting cavity 111, thereby causing the limiting protrusions 123 on its opposite side walls to disengage from the first slot 131 on the rotating handle 13, releasing the limiting constraint on the rotating handle 13. The rotating handle 13 is then in the rotating drive component... Under the elastic force of the 15, it rotates automatically, and the limiting stop 134 at its end disengages from the limiting slot 22 of the opening 21 of the chassis 20. Releasing the finger elastic pressing part 121 causes it to automatically reset under the action of the elastic reset member 14. At this point, simply pull the rotating handle 13 to smoothly pull the base 11 out of the opening 21, achieving quick disassembly of the fan module 10. When it is necessary to install the fan module 10, the operator only needs to push the base 11 along the opening 21 of the chassis 20. After the base 11 reaches the predetermined position, the rotating handle 13 is rotated in the opposite direction, causing the first slot 131 on the rotating handle 13 to re-engage with the reset slot. The fan module 10 is reliably fixed by the elastic lever 12 on the limiting protrusion 123, and the limiting buckle 134 at its end is also firmly embedded in the limiting slot 22 of the opening 21 of the chassis 20. Through the coordinated operation of the elastic lever 12, the rotating handle 13, and the double elastic components on the fan module 10 base 11, the fan module 10 can be quickly installed and easily disassembled within the chassis 20. This significantly improves equipment maintenance efficiency and reduces manual operation time. It also ensures the automatic reset of the rotating handle 13 during disassembly and its secure locking after installation, effectively preventing loosening and detachment due to vibration or external force, thus ensuring overall operation. The design ensures the safety and reliability of the fan module 10. Furthermore, the retractable design of the rotating handle 13 and the embedded design of the elastic pressure bar 12, while maintaining structural strength, allow it to be flush with the outer surface of the chassis 20. This not only avoids potential bumps and accidental touches caused by protruding structures but also enhances the aesthetics and compactness of the chassis 20. The user can directly operate the fan module through the recessed area, providing a comfortable feel and intuitive use, further optimizing the human-computer interaction experience. Therefore, this invention achieves quick assembly and disassembly of the fan module 10 while also considering stability, safety, aesthetics, and ergonomic optimization, effectively solving the problems of inconvenient operation, unstable fixing, and poor user experience associated with existing fan module 10 assembly and disassembly structures.

[0067] Each limiting stop 134 includes a first stop protrusion 1341 and a second stop protrusion 1342 located at the end of the rotating handle 13. The first stop protrusion 1341 and the second stop protrusion 1342 form a limiting notch 1343 at intervals, which is used to engage with the wall edge of the opening 21. The first stop protrusion 1341 extends into the limiting slot 22, and the second stop protrusion 1342 abuts against the outer wall of the chassis 20. By providing the first stop protrusion 1341 and the second stop protrusion 1342 at the end of the rotating handle 13, a limiting notch 1343 is formed between the first stop protrusion 1341 and the second stop protrusion 1342. This limiting notch 1343 is located at the wall edge of the opening 21 of the chassis 20, achieving double-locking fixation. Specifically, the first locking protrusion 1341 extends into the limiting slot 22 to securely lock the fan module 10, while the second locking protrusion 1342 abuts against the outer wall of the chassis 20, providing additional support. The reliable engagement of the first locking protrusion 1341 with the limiting slot 22 effectively prevents the fan module 10 from loosening or falling off due to vibration or external force. The second locking protrusion 1342 abuts against the outer wall of the chassis 20, both limiting the fan module 10 and helping to firmly fix the base 11 with the first locking protrusion 1341, preventing slippage or vibration, and providing a good support point. After the limiting protrusion 123 disengages from the first slot 131 on the rotating handle 13, the rotating handle 13 rotates under the elastic force of the rotating drive component 15. At the same time, the base 11 can be ejected from the opening 21 by using the lever principle with the second stop protrusion 1342 as the fulcrum. This not only avoids the difficulty of pulling out later due to the small rotation angle of the handle 13, but also effectively reduces the force required for operation, making the disassembly process smoother. At the same time, the reasonable setting of the limiting notch 1343 simplifies the locking operation, improves the convenience and efficiency of installation and disassembly, thereby significantly enhancing the stability and safety of the fan module 10 in the chassis 20 and optimizing the overall user experience.

[0068] It should be noted that the specific configuration of the aforementioned first locking protrusion 1341 and second locking protrusion 1342 is not limited to a single solution. For example, in addition to directly integrally molding the limiting notch 1343, the first locking protrusion 1341, and the second locking protrusion 1342 at the end of the rotating handle 13, the independent first locking protrusion 1341 and second locking protrusion 1342 can also be firmly connected to the end of the rotating handle 13 by riveting, screw fastening, snap-fit ​​assembly, etc., to adapt to different manufacturing processes and assembly requirements. Furthermore, in order to enhance the wear resistance and fatigue resistance of the first locking protrusion 1341 and second locking protrusion 1342 during long-term use, a wear-resistant coating can be sprayed on the surface of the first locking protrusion 1341 and second locking protrusion 1342 or they can be molded from high-strength alloy materials, so as to maintain a stable locking effect even under frequent assembly and disassembly or vibration environments. Therefore, the structure described in this embodiment of the invention achieves convenient installation and disassembly while also considering structural strength, service life, and process diversity, ensuring the reliability and applicability of the fan module 10 when used within the chassis 20. The connection process between the aforementioned rotating handle 13 and the limiting stop 134 is a conventional technical method and will not be described in detail here.

[0069] The first locking protrusion 1341 has an arc-shaped surface on its sidewall away from the second locking protrusion 1342. The curvature of the arc-shaped surface gradually increases from the rotating handle 13 towards the direction away from the rotating handle 13. By setting the sidewall of the first locking protrusion 1341 away from the second locking protrusion 1342 to an arc-shaped surface, and making the curvature gradually increase from the rotating handle 13 towards the direction away from the rotating handle 13, that is, the first locking protrusion 1341 gradually tapers from the end of the rotating handle 13 to its free end, the smoothness of the first locking protrusion 1341 disengaging from the limiting latch 22 can be significantly improved. This arc-shaped surface design can guide the first locking protrusion 1341 when it disengages from the limiting latch 22, allowing the first locking protrusion 1341 to slide out smoothly, avoiding the problem of right angles or sharp edges directly contacting the latch, causing jamming, excessive resistance, or damage to the opening edge of the chassis 20, thus making the disassembly process easier and less strenuous. At the same time, this design effectively reduces the force required for operation, improves disassembly safety, and extends the service life of the fan module 10 and chassis 20 components, achieving an organic combination of smooth operation, reliability and durability.

[0070] To prevent the limiting stop 134 from rotating excessively during the rotation of the handle 13, which could cause the base 11 to be excessively ejected or even detached from the opening 21 of the chassis 20, the present invention optimizes the arrangement of the second slot 132 and the V-shaped torsion spring in its structural design. Specifically, the second slot 132 is preferably located on the inner wall of the handle 13 and near its end, i.e., near the limiting stop 134. This limits the rotational stroke of the limiting stop 134, preventing it from affecting the engagement stability due to excessive rotation. At the same time, the included angle between the first and second spring arms of the V-shaped torsion spring is also reasonably designed so that when the second spring arm is embedded in the second slot 132, it can effectively control the rotation angle of the handle 13 to between approximately 6° and 15°. By limiting this angle range, it is possible not only to ensure that the base 11 pops out a suitable distance when unlocking, making it easy for the operator to grab and disassemble it, but also to effectively prevent the base 11 from falling directly out of the opening mouth 21 due to excessive popping, thereby ensuring the safety and reliability of the operation process.

[0071] In addition, the inner wall of the opening 21 is provided with a guide pin 23, and the outer wall of the base 11 is provided with a guide groove 115 that matches the guide pin 23. When the base 11 extends into the opening 21, the guide pin 23 extends into the guide groove 115, realizing the precise positioning and stable installation of the fan module 10 and the chassis 20. When the base 11 of the fan module 10 extends into the opening 21, the guide pin 23 automatically extends into the guide groove 115, thereby completing the fixing and guiding of the fan module 10. This structure not only simplifies the installation steps and improves the installation efficiency, but also ensures that the fan module 10 is accurately positioned in the chassis 20, avoiding airflow obstruction or vibration problems caused by assembly deviations, and improving heat dissipation efficiency and equipment stability. Typically, a server chassis 20 will be equipped with multiple fan modules 10. To ensure overall heat dissipation performance, multiple openings 21 will be opened on the chassis 20, with each opening 21 corresponding to one fan module 10. Through the matching of the guide pin 23 and the guide slide 115, each fan module 10 can be quickly and securely installed in the corresponding position, realizing modular assembly. This design not only facilitates the disassembly, maintenance, and replacement of the fan module 10, but also ensures the stability and reliability of multiple fan modules 10 operating simultaneously, effectively improving the heat dissipation performance and service life of the server during long-term high-load operation.

[0072] This server is suitable for various computing and storage applications, including data center servers, enterprise-level storage servers, high-performance computing servers, and cloud computing platforms. With its modular fan module 10 design, the server can flexibly adjust the fan arrangement and operating status according to different cooling requirements and workloads, ensuring the stability and reliability of critical hardware components under long-term, high-intensity operating conditions. This design not only significantly improves the ease of maintenance and operational safety of the server, making the disassembly and replacement of the fan module 10 faster and more efficient, but also effectively reduces vibration and mechanical wear through precise positioning and secure fixing, improving the overall reliability and lifespan of the machine, as well as the convenience of disassembly, assembly, and transportation of the fan module 10. Overall, this server can meet the heat dissipation and stability requirements of high-density, high-performance computing environments, adapt to various complex application scenarios, and has broad market application potential and promotional value.

[0073] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A trigger-type snap-fit ​​structure, characterized in that, include: The base has an installation cavity; An elastic pressure bar is disposed in the mounting cavity. The elastic pressure bar includes an elastic arm, a pressing part connected to one end of the elastic arm, and a limiting protrusion disposed at the end of the elastic arm away from the pressing part. Rotate the handle. One end of the rotating handle is rotatably mounted on the outer wall of the base, and the other end is provided with a first slot. The limiting protrusion is placed in the first slot. An elastic reset member is disposed in the mounting cavity and is used to reset the pressing part after the external force on the pressing part is removed. A rotation drive component is disposed on the outer wall of the base and is used to provide power for the rotation of the rotation handle; The mounting cavity has two oppositely arranged first through holes on its two inner walls that extend to the outer wall of the base. The rotating handle has a U-shaped structure and two oppositely arranged first slots are opened on its two side walls. The pressing part has two oppositely arranged elastic arms extending from its two ends. Each elastic arm is provided with a limiting protrusion protruding from the outer wall of the elastic arm. The limiting protrusion can be detachably locked in the first slot after passing through the first through hole. The mounting cavity has two opposing first deformation flanges on its two inner walls. Each elastic arm has a second deformation flange on its outer wall that mates with the first deformation flange. The first deformation flange is located on the moving path of the second deformation flange. When the second deformation flange moves toward the first deformation flange, the first deformation flange restricts the moving position of the second deformation flange, thereby forcing the elastic arm to bend and bring the limiting protrusion out of the first slot. Limiting brackets are provided on both inner walls of the mounting cavity. Each limiting bracket includes a first folding plate and a second and a third folding plate disposed at both ends of the first folding plate. The second and third folding plates extend outward from the first folding plate. The third folding plate is disposed on the inner wall of the mounting cavity. The side walls of the first and second folding plates and the two adjacent inner walls of the mounting cavity form a limiting cavity. The elastic arm is slidably disposed within the limiting cavity.

2. The trigger-type snap-fit ​​structure according to claim 1, characterized in that, The first deformation flange has a first arc-shaped surface at its top, and the second deformation flange has a second arc-shaped surface at its bottom that is opposite to the first arc-shaped surface. When the elastic arm slides along the inner wall of the mounting cavity, the second arc-shaped surface will slide along the surface of the first arc-shaped surface.

3. The trigger-type snap-fit ​​structure according to claim 1, characterized in that, The angle between the limiting protrusion and the extension angle of the elastic arm is controlled within the range of 90°-115°.

4. The trigger-type snap-fit ​​structure according to claim 1, characterized in that, The elastic reset component is a compression spring. The bottom of the mounting cavity is provided with a first positioning component, and the bottom of the pressing part is provided with a second positioning component that is opposite to the first positioning component. The two ends of the inner hole of the compression spring are respectively sleeved on the first positioning component and the second positioning component. The compression spring is used to drive the pressing part to reset so that the elastic arm slides in the limiting cavity.

5. The trigger-type snap-fit ​​structure according to claim 4, characterized in that, The first slot has a guide notch extending through to the outer wall of the rotating handle, allowing the limiting protrusion to slide into the first slot. The top wall of the first slot has a limiting buckle that cooperates with the limiting protrusion. The limiting buckle is located on the moving path of the limiting protrusion. When the limiting protrusion slides into the first slot through the guide notch, the restoring force of the compression spring will force the limiting protrusion to engage with the limiting buckle.

6. A fan module, characterized in that, It includes a single-unit fan and a trigger-type snap-fit ​​structure as described in any one of claims 1 to 5, wherein the single-unit fan is disposed within the mounting cavity.

7. A server, characterized in that, The device includes a chassis with an opening and a fan module as described in claim 6. A limiting slot is provided on the side wall of the opening. The base is detachably disposed in the opening. The end of the rotating handle is provided with a limiting buckle that cooperates with the limiting slot. The limiting buckle is detachably locked in the limiting slot. The rotating drive is used to drive the rotating handle to rotate so that the limiting buckle disengages from the limiting slot.

Images