fixing structure

Abstract

The application relates to a fixing structure, which comprises a fixing part, a movable part, at least one elastic piece and a knob. The fixing part is configured to be fixed on a frame. The movable part is slidingly connected to the fixing part. The movable part is configured to abut against a processing module in the frame. Two ends of the at least one elastic piece abut against the fixing part and the movable part respectively. The knob is pivotally connected to the fixing part. The knob is configured to selectively engage or disengage with the movable part. The knob protrudes away from the movable part on one side of the fixing part. When the knob disengages from the movable part, the elastic piece elastically recovers to cause the movable part to abut against an extension piece of the processing module in a direction away from the fixing part. The extension piece is arranged on the periphery of the processing module.

Description

Technical Field

[0001] This application relates to the field of fixed structure technology, and in particular to a fixed structure. Background Technology

[0002] Ensuring the stable fixation of components in electronic assemblies has always been a pressing problem in the field. For example, when a user wants to more securely mount a processing module (e.g., a graphics processing unit (GPU)) in a frame, additional fixing structures are typically used to secure the module and enhance the fixation effect. Specifically, the processing module includes extensions (e.g., GPU metal parts) disposed around it. When the user mounts the processing module in the frame, the extensions can move along grooves or tracks provided on the inner wall of the frame to facilitate the installation operation. Therefore, the additional fixing structures can be used to abut against the extensions to achieve the purpose of securing the processing module.

[0003] However, the specifications of processing modules manufactured by different brands are not entirely the same. For example, the length of the extension parts of different specifications of processing modules varies, and traditional mounting structures can only fix processing modules with specific specifications. Therefore, when users select processing modules of other specifications, mounting structures that can accommodate different specifications of processing modules must be manufactured. This leads to increased product development costs. Therefore, enabling the mounting structure to cope with the dimensional differences between various specifications of processing modules, or the tolerance issues between processing modules of the same specification, is one of the key design considerations for the mounting structure.

[0004] In addition, due to the narrow space inside the chassis, whether the mounting structure is easy to operate and can securely hold the processing module in place to prevent it from jumping out of the chip is also one of the key design considerations for the mounting structure.

[0005] Therefore, how to propose a fixed structure that can solve the above problems is one of the issues that the industry is currently eager to invest research and development resources to address. Summary of the Invention

[0006] Therefore, it is necessary to provide a fixing structure to address the problem that traditional fixing structures are difficult to adapt to processing modules of different sizes and the dimensional differences of processing modules due to tolerances.

[0007] According to a first aspect of this application, a fixing structure is proposed, comprising:

[0008] The fixing part is configured to be fixed to a frame;

[0009] The movable part is slidably connected to the fixed part, and the movable part is configured to abut against a processing module located in the frame;

[0010] At least one elastic member, wherein both ends of the at least one elastic member abut against the fixed portion and the movable portion, respectively; and

[0011] A knob, pivotally connected to the fixed portion, is configured to selectively engage or disengage with the movable portion, wherein the knob protrudes toward the fixed portion on the side away from the movable portion;

[0012] When the knob disengages from the movable part, the elastic member can push the movable part away from the fixed part to abut against an extension of the processing module located in the frame, the extension being disposed on the periphery of the processing module.

[0013] In one embodiment, the number of elastic elements is two, and the two elastic elements are respectively located on opposite sides of the knob in the z-axis direction.

[0014] In one embodiment, the fixed part and the movable part form a receiving space, and the knob is disposed in the receiving space and protrudes from the receiving space in a direction away from the movable part.

[0015] In one embodiment, the movable part includes a first engaging part, and the knob includes a second engaging part, the first engaging part and the second engaging part engaging with each other so that the movable part is fixed relative to the fixed part.

[0016] In one embodiment, the first engaging portion includes a plurality of first saw teeth, and the plurality of first saw teeth form a plurality of first grooves; the second engaging portion includes a plurality of second saw teeth, and the plurality of second saw teeth form a plurality of second grooves; the plurality of first saw teeth are configured to engage with the plurality of second grooves, and the plurality of second saw teeth are configured to engage with the plurality of first grooves; wherein the plurality of first saw teeth includes a first vertical surface and a first inclined surface, and the plurality of second saw teeth includes a second vertical surface and a second inclined surface.

[0017] In one embodiment, the knob includes a stop member, the fixing part includes two stop protrusions, and when the stop member abuts against one of the two stop protrusions, the knob disengages from the movable part, and when the stop member abuts against the other of the two stop protrusions, the knob engages with the movable part.

[0018] In one embodiment, the knob includes a rotating portion located on the side of the fixed portion away from the movable portion, the rotating portion being configured to disengage the knob from the movable portion when subjected to a rotational force.

[0019] In one embodiment, the fixed part includes two sliding grooves spaced apart along the z-axis, and the movable part includes two protrusions corresponding to the two sliding grooves, the two protrusions being configured to slide back and forth in the two sliding grooves respectively.

[0020] In one embodiment, the fixing structure further includes a pivot portion pivotally connected to and rotatable relative to a top cover, wherein the top cover is connected to the frame and located above the processing module.

[0021] In one embodiment, the fixing structure further includes a torsion spring fixed to the knob.

[0022] In summary, since the knob in the fixing structure of this application is pivotally connected to the fixing part and protrudes to the side of the fixing part away from the moving part, the user can easily operate the fixing structure in a narrow chassis without worrying about hurting their hands inside the chassis.

[0023] These and other aspects of this application will become apparent from the following description of preferred embodiments in conjunction with the accompanying drawings, but variations and modifications may be made therein without departing from the spirit and scope of the novel concept of this disclosure. Attached Figure Description

[0024] The accompanying drawings illustrate one or more embodiments of this application and, together with the written description, serve to explain the principles of this application. Throughout the drawings, the same reference numerals are used wherever possible to refer to similar or identical elements of the embodiments, wherein:

[0025] Figure 1 This is a perspective view of an electronic component according to one embodiment of this application.

[0026] Figure 2 This is a perspective view of an electronic component according to one embodiment of this application.

[0027] Figure 3 This is a perspective view of the fixed structure according to one embodiment of this application.

[0028] Figure 4 This is an exploded view of the fixed structure according to one embodiment of this application.

[0029] Figure 5 for Figure 3 A cross-sectional view of the fixed structure viewed along the cut line.

[0030] Figure 6 This is a perspective view of the fixed structure according to an embodiment of this application.

[0031] Figure 7 This is a perspective view of the fixed structure according to an embodiment of this application.

[0032] Figure 8 This is a perspective view of the fixed structure according to an embodiment of this application.

[0033] Figure 9 This is a top view of the fixing structure and processing module according to one embodiment of this application.

[0034] Figure 10 for Figure 9 A cross-sectional view of the fixed structure and processing module.

[0035] Figure 11 This is a top view of a fixed structure fixing module according to an embodiment of this application.

[0036] Figure 12 for Figure 11 A cross-sectional view of the fixed structure and processing module.

[0037] Explanation of icon numbers:

[0038] x, y, z: Axial axes;

[0039] D1: Distance;

[0040] A1, A2, A3: Arrows;

[0041] OP: Storage space;

[0042] 5-5, 10-10, 12-12: Cutting lines;

[0043] 10: Electronic components;

[0044] 100: Fixed structure;

[0045] 102: Pivot joint;

[0046] 110: Fixing part;

[0047] 112: Positioning hole;

[0048] 114: Sliding groove;

[0049] 116: Perforation;

[0050] 118a, 118b: Stopping protrusions;

[0051] 120: Activities Department;

[0052] 122: Receiving slot;

[0053] 124: convex dots;

[0054] 126: First meshing part;

[0055] 1261: First serration;

[0056] 1261a: First vertical plane;

[0057] 1261b: First inclined plane;

[0058] 1262: First groove;

[0059] 128: The surface against which the object rests;

[0060] 130: Knob;

[0061] 131: Groove;

[0062] 136: Second meshing part;

[0063] 1361: Second serration;

[0064] 1361a: Second vertical plane;

[0065] 1361b: Second inclined plane;

[0066] 1362: Second groove;

[0067] 138: Stop component;

[0068] 139: Rotating part;

[0069] 140: Elastic component;

[0070] 150: Torsion spring;

[0071] 200: Processing module;

[0072] 205: Box;

[0073] 210: Extension component;

[0074] 300: Frame;

[0075] 302: Positioning post;

[0076] 400: Top cover. Detailed Implementation

[0077] The following application will now be described more fully with reference to the accompanying drawings and references, some of which illustrate exemplary embodiments. This application may be implemented in different forms and should not be limited to the embodiments mentioned below. However, these embodiments are provided to aid in a more complete understanding of the application and to fully convey the scope of the application to those skilled in the art. The same reference numerals will refer to similar elements throughout the document.

[0078] In addition, the illustrations provided in this application are drawn to scale. To maintain the brevity of the specification, the proportions of each component are not listed in detail, but the proportions and positions of each component should be considered part of the content of this specification.

[0079] Please refer to Figure 1 . Figure 1 This is a perspective view of an electronic component 10 according to one embodiment of this application. In this embodiment, as... Figure 1 As shown, the electronic component 10 includes a fixing structure 100, a plurality of processing modules 200, a frame 300, and a top cover 400. The processing modules 200 are configured to be mounted on the frame 300. In some embodiments, the fixing structure 100 is fixed to the frame 300 by positioning posts 302. The fixing structure 100 is configured to secure the processing modules 200 located within the frame 300, so that the processing modules 200 can be stably fixed within the frame 300. The top cover 400 is located above the processing modules 200. The top cover 400 is configured to cover and protect the processing modules 200. The fixing structure 100 includes a pivot portion 102. The fixing structure 100 is rotatably pivoted to the top cover 400 via the pivot portion 102. When not fixed by the positioning posts 302, the fixing structure 100 can pivot relative to the top cover 400 in the direction of arrow A1.

[0080] Please refer to Figure 2 . Figure 2 This is a perspective view of an electronic component 10 according to one embodiment of this application. In this embodiment, a processing module 200 is mounted on a frame 300. The processing module 200 includes a housing 205 and an extension 210 disposed around the periphery of the housing 205. The fixing structure 100 is configured to abut against the extension 210 of the processing module 200 to prevent the processing module 200 from detaching from the frame 300.

[0081] In some implementations, the processing module 200 may be a graphics processing unit (GPU) or any suitable component. This application does not limit the type or shape of the processing module 200.

[0082] In some implementations, frame 300 may be a riser cage.

[0083] The following will describe in detail the structure, function, and connection relationship between each component included in the fixing structure 100 of this embodiment.

[0084] Please also refer to Figure 3 and Figure 4 . Figure 3 This is a perspective view of the fixing structure 100 according to one embodiment of this application. Figure 4This is an exploded view of a fixing structure 100 according to an embodiment of this application. In this embodiment, the fixing structure 100 includes a fixing part 110, a movable part 120, a knob 130, an elastic element 140, and a torsion spring 150. The fixing part 110 and the movable part 120 are slidably connected along the axial direction x. The fixing part 110 includes two sliding grooves 114 spaced apart along the axial direction z. The movable part 120 includes two protrusions 124 spaced apart along the axial direction z. The two sliding grooves 114 are slidably connected to the two protrusions 124 in the axial direction x. In other words, the protrusions 124 are configured to slide relative to the sliding grooves 114 along the axial direction x. The fixing part 110 includes a through hole 116. The knob 130 is pivotally connected to the fixing part 110 through the through hole 116 along the axial direction x. The knob 130 protrudes toward the side of the fixing part 110 away from the movable part 120. The knob 130 is configured to selectively engage or disengage from the movable part 120 by rotation. An elastic element 140 is disposed between the fixed portion 110 and the movable portion 120. The two ends of the elastic element 140 are respectively configured to abut against the fixed portion 110 and the movable portion 120. The knob 130 includes a groove 131 for engaging with the torsion spring 150.

[0085] In some embodiments, the elastic element 140 and the torsion spring 150 can be springs or any suitable elastic material.

[0086] Please also refer to Figure 1 as well as Figure 3 In some embodiments, the fixing part 110 includes a positioning hole 112. The positioning hole 112 is used to correspond to the positioning post 302. The positioning post 302 passes through the positioning hole 112 to fix the fixing part 110 to the frame 300.

[0087] Please also refer to Figure 4 and Figure 5 . Figure 5 for Figure 3 The fixed structure is shown in cross-sectional view along section line 5-5. In this embodiment, the fixed part 110 includes two stop protrusions 118a and 118b. The knob 130 includes a stop member 138. The stop member 138 is configured to rotate relative to the fixed part 110. When the stop member 138 abuts against the stop protrusion 118a, the knob 130 disengages from the movable part 120. When the stop member 138 abuts against the stop protrusion 118b, the knob 130 engages with the movable part 120. The stop protrusion 118a is configured to limit the rotation range of the knob 130. The stop protrusion 118b is configured to limit the stop member 138 when the torsion spring 150 is elastically released, so that the knob 130 can just engage with the movable part 120 when the torsion spring 150 is elastically released. Due to the limited space inside the chassis, it may not be possible to visually confirm the engagement or disengagement of the knob 130 and the movable part 120. The knob 130 can be easily and intuitively operated using the stop protrusions 118a and 118b and the torsion spring 150.

[0088] Please continue to refer to this. Figure 4 and Figure 5 In this embodiment, the movable part 120 includes two receiving grooves 122 for respectively accommodating two elastic members 140. The two receiving grooves 122 are located on opposite sides of the knob 130 in the axial z direction; in other words, the two elastic members 140 are located on opposite sides of the knob 130 in the axial z direction. This structural design allows the movable part 120 to experience more uniform force when the elastic members 140 return to their original position and push against the movable part 120 using their own elastic force.

[0089] Please also refer to Figure 3 , Figure 4 and Figure 5 In this embodiment, the fixed part 110 and the movable part 120 form an accommodating space OP. The knob 130 includes a rotating part 139. The knob 130 and the torsion spring 150 are disposed in the accommodating space OP. The rotating part 139 of the knob 130 protrudes from the fixed part 110 along the axial direction x away from the movable part 120. The rotating part 139 is configured to be able to receive a rotational force to rotate the knob 130 in the direction of arrow A2 and disengage it from the movable part 120. When the rotating part 139 is subjected to a rotational force, the stop member 138 rotates with the rotating part 139. Accordingly, in the fixing structure 100 of this application, since the rotating part 139 of the knob 130 protrudes from the fixed part 110 away from the movable part 120, the user is less likely to bump into other electronic components behind it during operation due to the narrow space inside the chassis.

[0090] Please refer to Figure 6 . Figure 6 This is a perspective view of the fixing structure 100 according to an embodiment of this application. For clarity, Figure 6 The fixed portion 110 is transparent and outlined with dashed lines. In this embodiment, the movable portion 120 includes a first engaging portion 126 and a contact surface 128. The contact surface 128 is located on the side of the movable portion 120 away from the fixed portion 110. The contact surface 128 is configured to abut against the processing module 200. The knob 130 includes a second engaging portion 136. The first engaging portion 126 and the second engaging portion 136 engage with each other in the axial x direction, so that the movable portion 120 and the knob 130 are engaged and do not slide relative to each other in the axial x direction. In some embodiments, the second engaging portion 136 is on the receiving groove 122.

[0091] Please also refer to Figure 4 as well as Figure 6In some embodiments, the protrusion 124 is provided on the outer side wall of the receiving groove 122. The protrusion 124 may be provided on each outer side wall of the two receiving grooves 122. In some embodiments, the movable part 120 is slidably connected to the sliding groove 114 of the fixed part 110 via the protrusion 124 on the receiving groove 122.

[0092] The operation of the fixed structure 100 will be described in detail below.

[0093] Please also refer to Figure 6 as well as Figure 7 . Figure 7 This is a perspective view of the fixing structure 100 according to one embodiment of this application. In this embodiment, the knob 130 is configured to rotate in the direction of arrow A2 when subjected to a rotational force. When the knob 130 rotates in the direction of arrow A2, the second engaging portion 136 rotates relative to the first engaging portion 126, causing the first engaging portion 126 to separate from the second engaging portion 136. When the knob 130 rotates in the direction of arrow A2, the torsion spring 150 connected to the knob 130 compresses the surrounding fixing portion 110, causing elastic deformation. When the knob 130 separates from the movable portion 120, the elastic member 140 returns to its original position by its own elastic force, pushing against the movable portion 120, causing the movable portion 120 to slide away from the fixing portion 110 along the axial direction x.

[0094] Please refer to Figure 8 . Figure 8 This is a perspective view of the fixing structure 100 according to one embodiment of this application. In some embodiments, when the knob 130 stops receiving rotational force, the torsion spring 150 elastically recovers, causing the knob 130 to rotate back to its original position in the direction of arrow A3. In other words, the elastic recovery of the torsion spring 150 causes the first engaging portion 126 and the second engaging portion 136 to engage in the axial x direction, preventing the movable portion 120 from continuously moving along the axial x direction.

[0095] Please compare Figure 6 as well as Figure 8 The positions of the first meshing part 126 and the second meshing part 136. Figure 6 The embodiments compared to Figure 8 In this embodiment, the first engaging portion 126 and the second engaging portion 136 have different engagement positions in the axial direction x. More precisely, after applying a rotational force to the knob 130, the knob 130 disengages from the movable portion 120, causing the first engaging portion 126 to move away from the fixed portion 110 and the knob 130 along the axial direction x. Therefore, when the knob 130 returns to its original position by the elastic force of the torsion spring 150, the second engaging portion 136 will engage with the portion of the first engaging portion 126 that is further away from the abutment surface 128.

[0096] With the aforementioned structural configuration, in a usage scenario, when the knob 130 is subjected to rotational force and rotates relative to the fixed portion 110, the second engaging portion 136 of the knob 130 disengages from the first engaging portion 126 of the movable portion 120, causing the movable portion 120 to move along the axial direction x away from the fixed portion 110 and abut against the processing module 200, thereby achieving the purpose of fixing the processing module 200. Then, when the knob 130 is no longer subjected to rotational force, causing the torsion spring 150 to return to its original elasticity (e.g., ... Figure 8 As shown, this can prevent the movable part 120 from moving again, thereby achieving the purpose of stably fixing the electronic components.

[0097] In some embodiments, the movable portion 120 is moved away from the fixed portion 110 along the axial direction x. The second engaging portion 136 rotates approximately along the axial direction y to disengage from the first engaging portion 126. The elastic element 140 and the knob 130 are arranged along the axial direction z (e.g., in...). Figure 5 In the middle, knob 130 is located between two elastic elements 140 on the z-axis. The x-axis, y-axis and z-axis are perpendicular to each other.

[0098] The following will describe in detail the method by which the fixed structure 100 fixes the processing module 200 of this application.

[0099] Please refer to Figure 9 . Figure 9 This is a top view of the fixing structure 100 and the processing module 200 according to one embodiment of this application. For simplicity, in Figure 9 The frame 300 and top cover 400 are omitted. In this embodiment, the processing module 200 includes a housing 205 and an extension 210. The movable part 120 of the fixing structure 100 is directly opposite the extension 210 in the axial x direction. There is a distance D1 between the movable part 120 and the extension 210 in the axial x direction. The distance D1 may vary depending on the specifications or dimensions of the processing module 200.

[0100] In some embodiments, due to the large size of the processing module 200 (e.g., the extension 210 is long), the distance D1 can be 0 before the knob 130 is rotated to move the movable part 120 away from the fixed part 110. In other words, the extension 210 may abut against the abutting surface 128 of the movable part 120 before the fixed structure 100 is actuated.

[0101] Please refer to Figure 10 . Figure 10 for Figure 9The fixed structure 100 and the processing module 200 are viewed in cross-section along section line 10-10. In this embodiment, two elastic members 140 are respectively located in two receiving grooves 122. The knob 130 and the torsion spring 150 are located in the receiving space OP between the two receiving grooves 122. The movable part 120 and the extension 210 have a distance D1 in the axial x direction. The first engaging part 126 includes a plurality of first serrations 1261. The first engaging part 126 includes a plurality of first grooves 1262 defined by the first serrations 1261. The second engaging part 136 of the knob 130 also includes a plurality of second serrations 1361, and the second engaging part 136 includes a plurality of second grooves 1362 defined by the second serrations 1361. The first serrations 1261 are configured to engage with the second grooves 1362. The second serrations 1361 are configured to engage with the first grooves 1262. The first sawtooth 1261 includes a first vertical surface 1261a and a first inclined surface 1261b. The second sawtooth 1361 includes a second vertical surface 1361a and a second inclined surface 1361b.

[0102] In some alternative embodiments, the first sawtooth 1261 may include two vertical surfaces extending parallel to the axial direction z and a plane connecting the two vertical surfaces. The second sawtooth 1361 may also include two vertical surfaces extending parallel to the axial direction z and a plane connecting the two vertical surfaces. Accordingly, the first sawtooth 1261 and the second sawtooth 1361 can engage more stably.

[0103] In some implementations, such as Figure 10 As shown, the first vertical surface 1261a is located on the side of the first sawtooth 1261 closest to the fixed portion 110 and faces the fixed portion 110. The first inclined surface 1261b is located on the side of the first sawtooth 1261 furthest from the fixed portion 110 and faces the movable portion 120. The second vertical surface 1361a is located on the side of the second sawtooth 1361 furthest from the fixed portion 110 and faces the movable portion 120. The second inclined surface 1361b is located on the side of the second sawtooth 1361 closest to the fixed portion 110 and faces the fixed portion 110.

[0104] Please also refer to Figure 9 , Figure 11 as well as Figure 12 . Figure 11 This is a top view of the fixing structure 100 fixing processing module 200 according to one embodiment of this application. Figure 12 for Figure 11The fixed structure 100 and the processing module 200 are viewed in cross section along section line 12-12. In this embodiment, the knob 130 is separated from the movable part 120 by the applied rotational force, causing the distance D1 to shorten as the movable part 120 slides toward the extension 210. More specifically, after the movable part 120 separates from the first engagement part 126 and the second engagement part 136, the elastic member 140 is elastically released, driving the movable part 120 to move along the axial direction x so that the abutment surface 128 abuts against the extension 210. When force is applied to the knob 130, the second serration 1361 rotates approximately along the axial direction y relative to the first groove 1262. After the knob 130 rotates to disengage from the movable part 120, the movable part 120 slides along the axial direction x relative to the knob 130. Accordingly, the effect of fixing the processing module 200 can be achieved by the ejection of the movable part 120. After the movable part 120 slides along the axial direction x, Figure 9 The distance D1 shown is actually 0.

[0105] Please also refer to Figure 10 as well as Figure 12 In this embodiment, by applying a rotational force to the knob 130, the first engagement portion 126 moves along the axial direction x by the distance of two first serrations 1261 and one first groove 1262.

[0106] In some embodiments, the movable part 120 can move approximately 4.5 mm relative to the fixed part 110. The distance the movable part 120 can move relative to the fixed part 110 is determined by the elastic coefficient of the elastic element 140 and / or the length of the sliding groove 114. It should be noted that the distance the movable part 120 can slide relative to the fixed part 110 can be adjusted according to the dimensions of different processing modules 200 that may require fixing, and this application is not limited thereto.

[0107] In one embodiment of this application, the fixed structure of this application can be set in a server. The server can be used for artificial intelligence (AI) computing, edge computing, or as a 5G server, cloud server, or vehicle networking server.

[0108] In summary, because the knob of the fixed structure of this application is pivotally connected to the fixed part and protrudes towards the side of the fixed part away from the movable part, it can be easily operated in narrow chassis spaces. Furthermore, since the fixed structure of this application includes a movable part, it can effectively solve the tolerance problem between different specifications of processing modules, enabling the fixed structure to be compatible with various brands and significantly reducing the development costs.

[0109] The foregoing description is only for illustrating and describing exemplary embodiments of this application and is not intended to exhaustively describe or limit the precise form of the invention disclosed in this application. The above teachings may be modified or varied.

[0110] The selected and illustrated embodiments are intended to explain the content of this application and their practical application, thereby inspiring other skilled in the art to utilize this application and various embodiments, and to make various modifications to suit a particular intended use. Alternative embodiments will be apparent to those skilled in the art without departing from the spirit and scope of this application. Therefore, the scope of this application is defined by the appended claims, and not by the foregoing description and the exemplary embodiments described therein.

Claims

1. A fixed structure, characterized in that, include: The fixing part is configured to be fixed to a frame; The movable part is slidably connected to the fixed part, and the movable part is configured to abut against a processing module located in the frame; At least one elastic member, wherein both ends of the at least one elastic member abut against the fixed portion and the movable portion, respectively; and A knob, pivotally connected to the fixed portion, is configured to selectively engage or disengage with the movable portion, wherein the knob protrudes toward the fixed portion on the side away from the movable portion; The number of elastic elements is two, and the two elastic elements are respectively located on opposite sides of the knob in the z-axis direction; when the knob is disengaged from the movable part, the elastic elements can push the movable part away from the fixed part and abut against an extension of the processing module located in the frame, the extension being disposed on the periphery of the processing module; The knob includes a stop member, and the fixing part includes two stop protrusions. When the stop member abuts against one of the two stop protrusions, the knob disengages from the movable part. When the stop member abuts against the other of the two stop protrusions, the knob engages with the movable part.

2. The fixing structure according to claim 1, characterized in that, The fixed part and the movable part form a receiving space, and the knob is located in the receiving space and protrudes from the receiving space in a direction away from the movable part.

3. The fixing structure according to claim 1, characterized in that, The movable part includes a first engaging part, and the knob includes a second engaging part. The first engaging part and the second engaging part engage with each other so that the movable part is fixed relative to the fixed part.

4. The fixing structure according to claim 3, characterized in that, The first engaging portion includes a plurality of first saw teeth, and the plurality of first saw teeth form a plurality of first grooves; the second engaging portion includes a plurality of second saw teeth, and the plurality of second saw teeth form a plurality of second grooves; the plurality of first saw teeth are configured to engage with the plurality of second grooves, and the plurality of second saw teeth are configured to engage with the plurality of first grooves; wherein the plurality of first saw teeth includes a first vertical surface and a first inclined surface, and the plurality of second saw teeth includes a second vertical surface and a second inclined surface.

5. The fixing structure according to claim 1, characterized in that, The knob includes a rotating part located on the side of the fixed part away from the movable part, and the rotating part is configured to disengage the knob from the movable part when subjected to a rotational force.

6. The fixing structure according to claim 1, characterized in that, The fixed part includes two sliding grooves spaced apart along the z-axis, and the movable part includes two protrusions corresponding to the two sliding grooves. The two protrusions are configured to slide back and forth in the two sliding grooves respectively.

7. The fixing structure according to claim 1, characterized in that, The fixing structure also includes a pivot portion, which is pivotally connected to a top cover and is rotatable relative to the top cover, wherein the top cover is connected to the frame and is located above the processing module.

8. The fixing structure according to claim 1, characterized in that, It also includes a torsion spring, which is fixed to the knob.

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