A sound box knob locking structure

Abstract

This application relates to the field of speaker enclosures, and more particularly to a speaker knob locking structure, comprising: a knob body, one end of which has a shaft hole, and the other end has a knob head; a spring mounting groove is provided below the shaft hole, and a spring is installed in the spring mounting groove; a control switch, one end of which has a rotating shaft, one end of which is rotatably connected to the end face of the control switch, and the other end of which is inserted into the shaft hole; when the rotating shaft is inserted into the shaft hole, an anti-rotation structure is formed between the rotating shaft and the shaft hole, and at the same time, the spring abuts against the rotating shaft to lock the knob switch and the rotating shaft together. At this time, rotating the knob head causes the knob body to drive the rotating shaft to rotate on the end face of the control switch. Compared with the prior art, this application, through the plug-in locking design, eliminates the step of tightening screws during assembly, realizes quick tool-free installation, effectively simplifies the production process, and reduces assembly costs.

Description

Technical Field

[0001] This application relates to the field of speaker technology, and more particularly to a speaker knob locking structure. Background Technology

[0002] In audio equipment, measuring instruments, and various electronic devices, knobs, as a basic human-computer interaction component, are widely used for adjusting volume, selecting channels, and setting parameters. Their core function is to precisely transmit the user's rotational operation to an internal control switch (such as a potentiometer, encoder, or band switch). In existing technology, a common method for connecting a knob to a switch shaft is screw locking. This involves creating a threaded hole in the side wall of the knob, screwing in a screw, and using the end of the screw to directly press against the switch shaft, thereby achieving synchronous rotation of both.

[0003] However, existing technologies primarily rely on friction between the screw and the shaft surface to transmit torque. While this principle is structurally simple, over long-term use, factors such as vibration, frequent adjustments, or material stress relaxation can cause the screw to loosen, resulting in free play between the knob and the shaft—a phenomenon known as "slippage." This leads to a loose adjustment feel and reduced control precision. Furthermore, the assembly process requires additional tools (such as screwdrivers) to tighten the screws, increasing the complexity and time cost of production and assembly. Utility Model Content

[0004] This application provides a speaker knob locking structure to solve the technical problems of low control accuracy and increased production and assembly complexity and time cost of existing speaker knob locking structures.

[0005] This application provides a speaker knob locking structure, including:

[0006] The knob body has a shaft hole at one end and a knob head at the other end. A spring plate mounting groove is provided below the shaft hole, and a spring plate is installed in the spring plate mounting groove.

[0007] A control switch, one end of which is provided with a rotating shaft, one end of which is rotatably connected to the end face of the control switch, and the other end is inserted into the shaft hole;

[0008] When the rotating shaft is inserted into the shaft hole, an anti-rotation structure is formed between the rotating shaft and the shaft hole. At the same time, the spring contact abuts against the rotating shaft to lock the rotary switch and the rotating shaft together. At this time, rotating the knob head causes the knob body to drive the rotating shaft to rotate on the end face of the control switch.

[0009] Furthermore, the rotating shaft is an F-handle rotating shaft, the shaft hole is a semi-circular hole, and the end of the rotating shaft near the shaft hole is a plug-in end, the plug-in end being adapted to the shape of the shaft hole.

[0010] Furthermore, the spring includes a plate-shaped body, a fixing part, and an elastic arm. The plate-shaped body has an upwardly protruding contact part in the middle. The fixing part is respectively disposed at opposite ends of the plate-shaped body. The elastic arm is a curved arm that extends downward from the plate-shaped body.

[0011] Furthermore, the fixing part is a bent structure extending from the left and right ends of the plate-shaped body, the fixing part abuts against the inner wall of one side of the spring plate mounting groove, and the width of the bent structure is adapted to the width of the spring plate mounting groove.

[0012] Furthermore, the end of the elastic arm away from the plate-shaped body abuts against the inner wall of the other side of the spring plate mounting groove.

[0013] Furthermore, the contact portion is an arc-shaped protrusion formed by pressing upward from the middle of the plate-shaped body, and the planar wall of the insertion end elastically abuts against the top of the arc-shaped protrusion.

[0014] Furthermore, the plate-shaped body, fixing part, elastic wall and contact part are integrally stamped from metal sheet.

[0015] Furthermore, a limiting part is provided on the flat wall of the rotating shaft. When the insertion end of the rotating shaft is inserted into the shaft hole, the limiting part is snapped into contact with the contact part.

[0016] Furthermore, the limiting part is a rectangular protrusion extending upward from the bottom of the planar wall, and the upper part of the rectangular protrusion engages with the bottom of the contact part.

[0017] Furthermore, the spring and the spring mounting slot are either detachably connected or integrally formed.

[0018] The technical solution provided in this application has the following advantages compared with the prior art:

[0019] This application achieves precise torque transmission through an anti-rotation structure consisting of a knob body shaft hole and a control switch shaft, and utilizes the continuous elastic pressure provided by a spring to lock the knob and shaft together, thus overcoming the shortcomings of existing technologies. Specifically, the anti-rotation structure mechanically eliminates circumferential relative rotation between the knob and shaft, fundamentally avoiding the slippage problem easily caused by traditional friction-based locking methods, ensuring precise and reliable operation. Secondly, the spring replaces the fastening screw as the locking element; its inherent elastic properties automatically compensate for gaps caused by wear or temperature changes, providing stable and durable locking force, significantly improving the structure's vibration resistance and long-term stability. Finally, this plug-in locking design eliminates the step of tightening screws during assembly, achieving quick tool-free installation, effectively simplifying the production process and reducing assembly costs. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0023] Figure 1 This is a schematic diagram of a speaker knob locking structure provided in an embodiment of this application;

[0024] Figure 2 for Figure 1 Exploded view;

[0025] Figure 3 for Figure 1 A schematic diagram of the structure of a shrapnel.

[0026] Figure 4 An exploded view of another embodiment of a speaker knob locking structure provided in this application;

[0027] Figure 5 This is a cross-sectional view of another embodiment of a speaker knob locking structure provided in this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Knob body; 11. Shaft hole; 12. Knob head; 13. Spring mounting slot; 14. Spring; 141. Plate-shaped body; 142. Fixing part; 143. Elastic arm; 144. Contact part;

[0030] 2. Control switch; 21. Rotating shaft; 211. Plug-in end; 212. Limiting part. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0033] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0034] To address the technical problems of low control precision and increased production and assembly complexity and time costs in existing speaker knob locking structures, this application provides a speaker knob locking structure. This structure achieves precise torque transmission through an anti-rotation structure formed by the shaft hole 11 of the knob body 1 and the rotating shaft 21 of the control switch 2. The continuous elastic pressure provided by the spring piece 14 locks the knob and the rotating shaft 21 together, thereby overcoming the defects in the prior art.

[0035] Please see Figures 1 to 5 This application provides a speaker knob locking structure, comprising: a knob body 1, one end of which has a shaft hole 11 and the other end has a knob head 12, a spring plate mounting groove 13 below the shaft hole 11, and a spring plate 14 installed in the spring plate mounting groove 13; a control switch 2, one end of which has a rotating shaft 21, one end of which is rotatably connected to the end face of the control switch 2, and the other end is inserted into the shaft hole 11; when the rotating shaft 21 is inserted into the shaft hole 11, an anti-rotation structure is formed between the rotating shaft 21 and the shaft hole 11, and at the same time, the spring plate 14 abuts against the rotating shaft 21 to lock the knob switch and the rotating shaft 21 together. At this time, rotating the knob head 12 causes the knob body 1 to drive the rotating shaft 21 to rotate on the end face of the control switch 2.

[0036] Specifically, one end of the knob body 1 has an axial hole 11 for inserting the rotating shaft 21, and the other end has an integrally formed or fixedly connected knob head 12 for user operation. The knob head 12 may have anti-slip texture for easy gripping and rotation. Inside the knob body 1 below the shaft hole 11, there is a spring plate mounting groove 13 that matches the shape of the spring plate 14. The spring plate 14 is made of metal or polymer material with elastic deformation capability and is directly embedded in the spring plate mounting groove 13. The spring plate 14 extends out of the shaft hole 11 and can retract under external force and return to its original position after the external force is removed. One end of the control switch 2 has a rotating shaft 21 with a cylindrical or irregular cross-section. One end of the rotating shaft 21 is connected to the end face of the control switch 2 through a rotational fit structure (such as a clearance fit bushing, rolling bearing, etc.) to ensure that the rotating shaft 21 can rotate freely relative to the end face. The cross-sectional shape of the other end of the rotating shaft 21 is perfectly matched with the shaft hole 11 of the knob body 1 and can be smoothly inserted into the shaft hole 11.

[0037] Furthermore, by aligning the free end of the rotating shaft 21 of the control switch 2 with the shaft hole 11 of the knob body 1 and inserting it axially, an anti-rotation structure is formed: the rotating shaft 21 and the shaft hole 11 have a non-circular cross-section (such as D-shaped, square, hexagonal, spline, etc.), and the two cannot rotate relative to each other in the circumferential direction after insertion, thus directly forming an anti-rotation structure; during the insertion of the rotating shaft 21, its outer circumferential surface presses the part of the spring piece 14 that extends out of the groove, causing the spring piece 14 to undergo elastic deformation; when the rotating shaft 21 is fully inserted into the shaft hole 11, the spring piece 14 is in close contact with the outer circumferential surface of the rotating shaft 21 under the action of elastic restoring force, generating a continuous axial friction force, which axially locks the knob body 1 and the rotating shaft 21, preventing the two from loosening relative to each other in the axial direction. When the user holds the knob head 12 and applies rotational force, the knob body 1 drives the rotating shaft 21 to rotate synchronously around the circumference through the aforementioned anti-rotation structure. Since the rotating shaft 21 is rotatably connected to the end face of the control switch 2, the rotating shaft 21 only rotates relative to the end face of the control switch 2, thereby driving the internal structure of the control switch 2 to perform functions such as speaker volume adjustment and sound effect switching. This structure can directly prevent the knob body 1 and the rotating shaft 21 from sliding relative to each other around the circumference through the anti-rotation structure, ensuring stable transmission of rotational torque, eliminating the "free rotation" phenomenon of the speaker knob locking structure, and ensuring accurate execution of adjustment commands; the spring piece 14 elastically abuts to achieve axial locking, without the need for additional fasteners, thus preventing the knob body 1 and the rotating shaft 21 from axially loosening, improving structural stability and service life; the overall structure has no complex parts, and assembly only requires "the rotating shaft 21 to be inserted into the shaft hole 11" to complete the locking in one step, simplifying the assembly process and reducing production costs.

[0038] It is understood that the control switch 2 in this embodiment is an integrated component of potentiometer switch, band switch and encoder switch. The rotation of the knob head 12 can directly drive the sliding brush or the gear positioning mechanism inside the potentiometer or band switch, thereby linearly changing the resistance value or clearly switching the circuit gear. At the same time, it can also drive the grating or mechanical contact inside the encoder to generate corresponding pulse signals, so as to realize precise control such as speaker volume step adjustment and function menu switching.

[0039] like Figure 2 As shown, the rotating shaft 21 is an F-handle rotating shaft 21, the shaft hole 11 is a semi-circular hole, and the end of the rotating shaft 21 near the shaft hole 11 is a plug end 211, which is adapted to the shape of the shaft hole 11.

[0040] Specifically, in this embodiment, the cross-sectional shape of the insertion end 211 of the F-handle shaft 21 is machined into a semi-circular shape, and the shaft hole 11 of the knob body 1 is correspondingly machined into a semi-circular hole. The inner diameter and curvature of the semi-circular hole are perfectly matched with the insertion end 211, ensuring that the insertion end 211 can be smoothly inserted into the shaft hole 11. When the insertion end 211 is inserted into the semi-circular shaft hole 11, the two form an anti-rotation fit through the circumferential limiting of the semi-circular structure, preventing the knob body 1 and the shaft 21 from sliding relative to each other in the circumferential direction. At the same time, the spring piece 14 in the spring piece mounting groove 13 of the knob body 1 abuts against the outer circumferential surface of the F-handle shaft 21 under the action of elastic force, generating axial friction force, axially locking the knob body 1 and the shaft 21, and preventing them from loosening. This structure achieves axial locking through the abutment of the spring piece 14 and the F-handle shaft 21, combined with the shape-matched anti-rotation structure, providing double protection for the stable connection between the knob body 1 and the shaft 21. Moreover, the assembly does not require additional fasteners, simplifying the process and reducing costs.

[0041] like Figure 2 and Figure 3 As shown, the spring 14 includes a plate-shaped body 141, a fixing part 142, and an elastic arm 143. The plate-shaped body 141 has an upwardly protruding contact part 144 in the middle. The fixing parts 142 are respectively disposed at opposite ends of the plate-shaped body. The elastic arm 143 is a curved arm that extends downward from the plate-shaped body 141.

[0042] Specifically, the plate-shaped body 141 is the basic load-bearing structure of the spring piece 14 and has a planar plate shape. The central region is formed by stamping or bending to form an upwardly protruding contact part 144. The protrusion direction of the contact part 144 is perpendicular to the plane of the plate-shaped body 141, and the end face of the protrusion is a smooth curved surface or a plane, which is used to abut against the outer peripheral surface of the rotating shaft 21. The fixing parts 142 are integrally formed on opposite ends of the plate-shaped body 141. Specifically, they can be set as bosses extending to both sides of the plate-shaped body 141 or ear structures bent along the end face of the plate-shaped body 141. The shape of the fixing part 142 is adapted to the inner wall of the spring piece mounting groove 13 of the knob body 1. During assembly, the spring piece 14 is fixed in the spring piece mounting groove 13 by interference fit, snap-fit ​​or adhesive, etc., to ensure that the spring piece 14 as a whole does not shift. The elastic arm 143 extends downward from the edge region of the plate-shaped body 141 and is bent to form a curved (such as an arc or a broken line) structure. The extension direction of the elastic arm 143 is opposite to the protrusion direction of the contact portion 144, and it has the characteristic of elastic deformation. When the contact portion 144 is squeezed by the rotating shaft 21, the elastic arm 143 can contract and deform along its own curved trajectory. When the squeezing force is removed, the elastic arm 143 pushes the plate-shaped body 141 to reset through its own elastic restoring force, so that the contact portion 144 remains in contact with the rotating shaft 21.

[0043] like Figure 2 and Figure 3As shown, the fixing part 142 is a bent structure extending from the left and right ends of the plate-shaped body 141. The fixing part 142 abuts against the inner wall of one side of the spring plate mounting groove 13, and the width of the bent structure is adapted to the width of the spring plate mounting groove 13.

[0044] Specifically, the fixing part 142 of the spring piece 14 is formed by extending horizontally outward from both ends of the plate-shaped body 141 and then bending in the same direction (perpendicular to the plane of the plate-shaped body 141), forming an overall bent structure. The extension length of this bent structure is adapted to the width of the spring piece mounting groove 13, and the bending angle keeps the end face of the fixing part 142 perpendicular to the plane of the plate-shaped body 141. During assembly, the spring piece 14 is placed in the spring piece mounting groove 13, and the outer end face of the fixing part 142 abuts tightly against one side inner wall (such as the left or right inner wall) of the spring piece mounting groove 13, forming a surface contact; at the same time, the dimension of the bent structure along the width direction of the spring piece mounting groove 13 is precisely matched with the width of the spring piece mounting groove 13, so that the fixing part 142 does not wobble laterally in the mounting groove, realizing the lateral limitation of the spring piece 14 in the mounting groove, ensuring that the spring piece 14 is installed firmly and avoiding displacement under force.

[0045] like Figure 2 and Figure 3 As shown, the end of the elastic arm 143 away from the plate-shaped body 141 abuts against the inner wall of the other side of the spring plate mounting groove 13.

[0046] Specifically, during assembly, the spring 14 is placed in the spring mounting groove 13, with the fixing part 142 abutting against one side of the inner wall of the mounting groove, while the free end of the elastic arm 143 is in close contact with the other side of the inner wall of the spring mounting groove 13 (i.e., the inner wall opposite to the side abutting against the fixing part 142), forming a stable abutment relationship. When the rotating shaft 21 is inserted into the shaft hole 11 and presses the contact part 144 of the spring 14, the plate-shaped body 141 is forced to cause the elastic arm 143 to bend and deform, and the free end of the elastic arm 143 exerts pressure on the other side of the inner wall of the mounting groove; under the elastic recovery action of the elastic arm 143, this pressure is converted into a reverse force, pushing the contact part 144 to continuously abut against the outer peripheral surface of the rotating shaft 21, maintaining the locked state, thereby ensuring that the elastic recovery force acts continuously and evenly on the contact part 144, enhancing the locking reliability.

[0047] like Figure 2 and Figure 3 As shown, the contact portion 144 is an arc-shaped protrusion formed by pressing upward from the middle of the plate-shaped body 141, and the flat wall of the insertion end 211 elastically abuts against the top of the arc-shaped protrusion.

[0048] Specifically, the contact portion 144 of the spring piece 14 is formed by a stamping process. The middle area of ​​the plate-shaped body 141 is used as the processing position. The upward stamping method is used to form an arc-shaped structure that protrudes vertically upward along the plane of the plate-shaped body 141, i.e., an arc-shaped protrusion. The top of the arc-shaped protrusion is a smooth curved surface, which serves as the core part that contacts the insertion end 211 of the rotating shaft 21. The insertion end 211 of the rotating shaft 21 has a flat wall (i.e., the flat area of ​​the outer circumference of the insertion end 211). When the insertion end 211 is inserted into the shaft hole 11 of the knob body 1, the flat wall of the insertion end 211 will directly contact the top of the arc-shaped protrusion. Since the elastic arm 143 of the spring piece 14 abuts against the inner wall of the spring piece mounting groove 13, when the arc-shaped protrusion is squeezed by the flat wall, it will drive the plate-shaped body 141 and the elastic arm 143 to undergo elastic deformation. The restoring force generated by the elastic arm 143 acts in the opposite direction on the arc-shaped protrusion, so that the top of the arc-shaped protrusion always maintains a tight elastic abutment with the flat wall of the insertion end 211, forming a continuous contact pressure.

[0049] like Figure 3 As shown, the plate-shaped body 141, the fixing part 142, the elastic wall and the contact part 144 are integrally stamped from metal sheets.

[0050] Specifically, the plate-shaped body 141, fixing part 142, elastic wall, and contact part 144 of the spring 14 are made of the same metal sheet (such as spring steel, brass, and stainless steel) as raw material, and are formed in one step through a stamping process. First, the metal sheet is cut into blanks of a preset size. Then, the plate-shaped body 141 is formed in planar shape, the fixing part 142 is extended and bent, the elastic wall is curved and formed, and the contact part 144 is stamped upwardly arc-shaped, ultimately forming a complete spring 14 structure. Throughout the entire forming process, there are no secondary connection processes such as splicing or welding, making them an inseparable whole. This method eliminates splicing gaps, improves the overall structural strength and fatigue resistance of the spring 14, and extends its service life.

[0051] like Figure 4 and Figure 5 In another embodiment shown, a limiting part 212 is provided on the flat wall of the rotating shaft 21. When the insertion end 211 of the rotating shaft 21 is inserted into the shaft hole 11, the limiting part 212 is snapped into contact with the contact part 144.

[0052] Specifically, in this embodiment, a limiting part 212 is provided on the flat wall of the rotating shaft 21 (i.e., the flat area on the outer periphery of the insertion end 211). The limiting part 212 is a locking block that protrudes outward along the surface of the flat wall; the contact part 144 of the spring piece 14 is correspondingly provided with an adapter structure. When the insertion end 211 of the rotating shaft 21 is inserted into the shaft hole 11, as the insertion action progresses, the contact part 144 elastically abuts against the flat wall under the action of the elastic arm 143 until the limiting part 212 moves to the position of the contact part 144; at this time, the adapter structure of the contact part 144 and the limiting part 212 fit together to form a snap-fit ​​connection, realizing the mechanical locking of the two. The snap-fit ​​connection adds mechanical locking on the basis of elastic abutment, doubly strengthening the axial locking effect, which can prevent the rotating shaft 21 from accidentally disengaging from the knob body 1.

[0053] like Figure 4 and Figure 5 As shown, the limiting part 212 is a rectangular protrusion formed by extending upward from the bottom of the flat wall, and the upper part of the rectangular protrusion engages with the bottom of the contact part 144.

[0054] Specifically, when the insertion end 211 of the rotating shaft 21 is inserted into the shaft hole 11, as the insertion is pushed forward, the arc-shaped protrusion is squeezed and undergoes elastic deformation until the rectangular protrusion moves to the bottom position of the contact part 144. At this time, the arc-shaped protrusion of the contact part 144 is reset under the action of elastic restoring force, and its bottom is engaged with the upper part of the rectangular protrusion to form a tight engagement, thereby realizing the mechanical locking of the two.

[0055] In an optional embodiment, the spring 14 and the spring mounting groove 13 are either detachably connected or integrally formed.

[0056] Specifically, in this embodiment, the spring piece 14 can be detachably connected and installed in the spring piece mounting slot 13, or it can be integrally formed and installed in the spring piece mounting slot 13. When the detachable structure is used to cooperate with the spring piece mounting slot 13, the spring piece 14 can be directly placed into the spring piece mounting slot 13, or an elastic buckle can be provided by the fixing part 142, and a corresponding slot can be provided on the inner wall of the spring piece mounting slot 13. The buckle and the slot can be engaged to achieve fixation, and external force can be applied to separate the two. When the integrally formed structure is used, the spring piece 14 and the knob body 1 where the spring piece mounting slot 13 is located are made of the same material (such as metal or plastic) and integrally formed (such as metal stamping or plastic injection molding). The spring piece 14 is part of the knob body 1, and there is no splicing gap with the mounting slot. It cannot be separated separately. The detachable connection facilitates the individual replacement or repair of the spring 14, adapts to wear scenarios after long-term use, and improves structural maintainability; the one-piece molded structure eliminates connection gaps, enhances overall strength, prevents the spring 14 from loosening, and reduces assembly processes, thereby reducing costs; this application offers two optional connection methods to adapt to different production needs and usage scenarios, thus improving structural flexibility.

[0057] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0058] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0059] Furthermore, the terms "first" and "second" 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0060] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0063] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0064] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A speaker knob locking structure, characterized in that, include: The knob body has a shaft hole at one end and a knob head at the other end. A spring plate mounting groove is provided below the shaft hole, and a spring plate is installed in the spring plate mounting groove. A control switch, one end of which is provided with a rotating shaft, one end of which is rotatably connected to the end face of the control switch, and the other end is inserted into the shaft hole; When the rotating shaft is inserted into the shaft hole, an anti-rotation structure is formed between the rotating shaft and the shaft hole. At the same time, the spring contact abuts against the rotating shaft to lock the rotary switch and the rotating shaft together. At this time, rotating the knob head causes the knob body to drive the rotating shaft to rotate on the end face of the control switch.

2. The speaker knob locking structure according to claim 1, characterized in that, The rotating shaft is an F-handle rotating shaft, the shaft hole is a semi-circular hole, and the end of the rotating shaft near the shaft hole is a plug-in end, which is adapted to the shape of the shaft hole.

3. The speaker knob locking structure according to claim 2, wherein The spring includes a plate-shaped body, a fixing part, and an elastic arm. The plate-shaped body has an upwardly protruding contact part in the middle. The fixing part is respectively disposed at opposite ends of the plate-shaped body. The elastic arm is a curved arm that extends downward from the plate-shaped body.

4. The speaker knob locking structure according to claim 3, characterized in that, The fixing part is a bent structure extending from the left and right ends of the plate-shaped body. The fixing part abuts against the inner wall of one side of the spring plate mounting groove. The width of the bent structure is adapted to the width of the spring plate mounting groove.

5. The speaker knob locking structure according to claim 4, characterized in that, The end of the elastic arm away from the plate-shaped body abuts against the inner wall of the other side of the spring plate mounting groove.

6. The speaker knob locking structure according to claim 5, characterized in that, The contact portion is an arc-shaped protrusion formed by pressing upward from the middle of the plate-shaped body, and the flat wall of the insertion end elastically abuts against the top of the arc-shaped protrusion.

7. The speaker knob locking structure according to claim 6, characterized in that, The plate-shaped body, fixing part, elastic wall and contact part are integrally stamped from metal sheet.

8. The speaker knob locking structure according to claim 3, characterized in that, The rotating shaft has a limiting part on its flat wall. When the insertion end of the rotating shaft is inserted into the shaft hole, the limiting part is snapped into contact with the contact part.

9. The speaker knob locking structure according to claim 8, characterized in that, The limiting part is a rectangular protrusion extending upward from the bottom of the planar wall, and the upper part of the rectangular protrusion engages with the bottom of the contact part.

10. The speaker knob lock structure according to claim 1, wherein, The spring and the spring mounting slot are either detachably connected or integrally formed.

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