Knob dismounting tool for aircraft audio control panel
By designing a knob removal tool with a clamping portion and anti-slip material, the problem of difficult removal and damage of audio control panel knobs is solved, rapid removal is achieved and the damage rate is reduced, thus shortening the maintenance cycle and reducing costs.
Patent Information
- Application Number
- CN202521738351.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-15
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2035-08-15
AI Technical Summary
Audio control panel knobs are difficult to remove and easily damaged, resulting in extended repair cycles and increased costs.
A disassembly tool is designed, which includes two handles connected in a rotating manner in the middle, a clamping part and anti-slip material. The clamping part forms a clamping space and applies traction to achieve rapid disassembly of the knob.
The knob can be quickly disassembled, which reduces the damage rate, shortens the maintenance cycle and reduces the maintenance cost.
Smart Images
Figure CN223354175U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aircraft maintenance, in particular to a tool for disassembling knobs of an aircraft audio control panel. Background Art
[0002] As part of the onboard internal communication system, the audio control panel works with the audio management component to provide the crew with display of selective calling and transmission channels, adjustment of radio communication and radio navigation audio volume, and intercom control.
[0003] The receiving volume adjustment knob on the audio control panel has a high-frequency failure defect, which is mainly manifested as the loss of the push-to-lock function. However, the knob is difficult to disassemble. If violent disassembly is used, it will not only extend the maintenance cycle but also increase the maintenance cost. Utility Model Content
[0004] The present application discloses a tool for removing knobs of an aircraft audio control panel, so as to solve the technical problem in the related art that knobs are difficult to remove and easily damaged.
[0005] In order to solve the above problems, the present invention adopts the following technical solutions:
[0006] A tool for removing knobs on an aircraft audio control panel comprises two handles rotatably connected to each other at the middle, the ends of the two handles are respectively provided with clamping parts, and the facing surfaces of the two clamping parts are respectively provided with cavities;
[0007] As the two handles rotate inward, the end surfaces of the two clamping parts stop, so that the two cavities form a clamping space for clamping the knob.
[0008] In some solutions, an end of the handle away from the clamping portion is wrapped with an anti-slip material.
[0009] In some solutions, when the end surfaces of the two clamping parts abut against each other, the clamping space formed by the two cavities is cylindrical.
[0010] In some aspects, at least one of the side surfaces of the two handles are coplanar.
[0011] In some solutions, one of the handles is provided with a groove; the two handles are fitted into the groove and are rotatably connected.
[0012] In some solutions, the other handle is further provided with a connecting portion, which is engaged with the groove;
[0013] As the two handles rotate outward, the inner wall of the groove and the connecting portion stop and limit.
[0014] In some embodiments, an outer wall of the connecting portion and / or an inner wall of the groove is provided with an arc surface.
[0015] In some embodiments, outer walls of the two clamping portions each have a tapered surface, the diameter of which gradually increases from an end away from the handle to an end close to the handle.
[0016] In some solutions, the inner walls of the two clamping parts are coated with a soft material.
[0017] In some embodiments, the rotating connection portion of the handle divides the handle into a clamping portion and a gripping portion, and the length of the gripping portion is more than twice the length of the clamping portion.
[0018] The technical solution adopted by the utility model can achieve the following beneficial effects:
[0019] The aircraft audio control panel knob removal tool disclosed in this application utilizes a mechanical stop mechanism when the two handles are rotated inward, forming a rigid positioning reference. The two cavities then clamp the knob, creating a strong clamping force and applying a uniform pulling force along the knob's axis. Simultaneously, the handles are rotated left and right (or in the desired direction) at a uniform speed to remove the knob. This technical solution allows for rapid knob removal and effectively reduces the risk of damage. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0021] Figure 1 is an axonometric view of an aircraft audio control panel knob removal tool disclosed in some embodiments of the present application;
[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle;
[0023] Figure 3 is a front view of an aircraft audio control panel knob removal tool disclosed in some embodiments of the present application;
[0024] Figure 4 yes Figure 3 Enlarged view of point B in the middle.
[0025] In the picture:
[0026] 100-handle, 110-groove, 120-connecting part, 121-arc surface, 130-silicone sleeve;
[0027] 200-clamping portion, 210-cavity, 220-tapered surface. DETAILED DESCRIPTION
[0028] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.
[0029] In the specification and claims, "and / or" means at least one of the connected objects, and the character " / " generally indicates that the previous and subsequent related objects are in an "or" relationship.
[0030] While repairing knobs on an aircraft audio control panel, the inventor discovered that the volume control knob on the control panel exhibited a high-frequency failure defect, primarily manifesting as a loss of the push-to-lock function. The root cause was stress fatigue and fracture of the internal switch reed pressure plate, preventing the knob from locking. The repair required replacing the switch. However, replacing the switch presupposes removing all knobs (the manual lacks specialized tools for disassembly). Current knob repairs are caught in a conflicting cycle of "non-removable design" and "mandatory replacement requirements." The core pain point is the lack of a quantitatively controlled physical separation method, which prolongs the repair cycle and further increases the proportion of damage to the repair cost.
[0031] The following is combined with Figures 1 to 4 , an aircraft audio control panel knob removal tool provided by the present application is described in detail through specific embodiments and application scenarios.
[0032] Some embodiments of the present application disclose a tool for removing a knob on an aircraft audio control panel, comprising two clamping portions 200 and two handles 100 .
[0033] like Figure 1 、 Figure 2 and Figure 3 As shown, the middle parts of the two handles 100 are rotatably connected. By rotating the two handles 100, the operator's gripping force is converted into an axially symmetrical mechanical separation force, thereby facilitating the rotation of the handles 100.
[0034] In this embodiment, the handle 100 is rotated by the connecting portion 120 to separate it into a gripping end and a clamping end. The gripping end is preferably at least twice the length of the clamping end. Based on the principle of torque balance, a greater leverage ratio amplifies the operator's gripping force, thereby increasing the clamping force of the clamping end. Furthermore, the short structure of the clamping end allows it to penetrate deep into panel gaps, while the long arm of the gripping end maintains an effective operating angle in confined spaces, reducing the risk of spatial interference.
[0035] like Figure 1 and Figure 3 As shown, the ends of the two handles 100 are each provided with a clamping portion 200, and the facing surfaces of the two clamping portions 200 are each provided with a cavity 210. As the two handles 100 rotate inward, the end surfaces of the two clamping portions 200 abut against each other, forming a clamping space for clamping the knob. When the two handles 100 rotate inward, the end surfaces of the two clamping portions 200 first mechanically abut against each other, forming a rigid positioning reference. Then, the two cavities 210 clamp the knob, and the two clamping portions 200 exert a strong clamping force on the knob and apply a uniform pulling force along the knob's axis. Simultaneously, the handles 100 are rotated at a uniform speed left and right (or in the desired direction) to remove the knob.
[0036] It should be noted that, in order to reduce damage to the knob caused by the clamping portion 200 , a protective cover made of materials such as silicone and rubber may be wrapped around the knob in advance.
[0037] The end of the handle 100 away from the clamping portion 200 is coated with a non-slip material. This non-slip material increases friction when the operator holds the handle 100, making it easier for the operator to grip. Furthermore, the non-slip material cushions the operator's arm, reducing fatigue during extended work.
[0038] In this embodiment, the anti-slip material is made of silicone and forms a silicone sleeve 130 that is sleeved on the handle 100 .
[0039] like Figure 1 As shown, when the end faces of the two clamping portions 200 abut against each other, the clamping space formed by the two cavities 210 is cylindrical. This cylindrical clamping space facilitates a complete fit with the knob or the protective cover fitted over the knob, evenly distributing the clamping force across the entire sidewall of the knob. Compared to traditional two-point clamping, this effectively eliminates local stress concentration and prevents damage to the knob.
[0040] like Figure 1 As shown, at least one side surface of the two handles 100 is coplanar. This coplanarity allows the handles 100 to be operated in close proximity to adjacent panels or devices, preventing interference within the densely packed avionics compartment. Furthermore, the handles 100 are kept in the same operating plane as closely as possible, eliminating the asymmetric grip common with traditional tools. This allows the operator's hands to completely align their force planes, further facilitating operation of the knob removal tool.
[0041] like Figure 2 As shown, one of the handles 100 is provided with a groove 110; the two handles 100 are engaged and connected by rotation through the groove 110. By providing the groove 110, the side walls of the handles 100 are forced to align, so that the grip ends are always in a coplanar state, eliminating asymmetric force.
[0042] like Figure 2 As shown, the other handle 100 also has a connecting portion 120, which engages with the groove 110. As the two handles 100 rotate outward, the inner wall of the groove 110 and the connecting portion 120 abut against each other to limit the position. When the handles 100 rotate outward and expand, the precise contact between the connecting portion 120 and the inner wall of the groove 110 forms a rigid physical stop, locking the maximum expansion angle within a reasonable range and preventing the two handles 100 from over-expanding. Furthermore, the rigid abutment between the inner wall of the groove 110 and the connecting portion 120 eliminates the need for additional stop pins, springs, and other components, reducing costs.
[0043] like Figure 2 As shown, the outer wall of the connecting portion 120 and / or the inner wall of the groove 110 are provided with an arc surface 121. By providing the arc surface 121, a smooth transition of torque is achieved during the unfolding process of the handle 100, eliminating the impact vibration generated by the traditional right-angle limit.
[0044] In some embodiments, an outer wall of the connecting portion 120 is provided with a curved surface 121 .
[0045] In some embodiments, an inner wall of the groove 110 is provided with a curved surface 121 .
[0046] In some embodiments, an outer wall of the connecting portion 120 and an inner wall of the groove 110 are provided with an arc surface 121 .
[0047] like Figure 4 As shown, the outer walls of the two clamping parts 200 each have a tapered surface 220, whose diameter gradually increases from the end away from the handle 100 to the end closer to the handle 100. When the two clamping parts 200 are stopped, the tapered surfaces 220 allow the protective cover to be quickly and easily attached to the two clamping parts 200. The handle 100 can then be rotated outward to expand the protective cover, making it easier to fit over the knob.
[0048] The inner walls of the two clamping parts 200 are wrapped with soft material. By arranging the soft material on the inner wall of the clamping part 200, there is no need to add an additional protective cover, and the knob can be protected by the soft material.
[0049] As preferred in this embodiment, the soft material may be silicone, rubber or others, and can be flexibly set according to usage requirements, which is not limited in this embodiment.
[0050] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.
[0051] Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in reverse order depending on the functions involved. For example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to certain examples may be combined in other examples.
[0052] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A tool for removing knobs from an aircraft audio control panel, characterized in that: It comprises two handles rotatably connected to each other at the middle, the ends of the two handles are respectively provided with clamping parts, and the facing surfaces of the two clamping parts are respectively provided with cavities; As the two handles rotate inward, the end surfaces of the two clamping parts stop, so that the two cavities form a clamping space for clamping the knob.
2. The aircraft audio control panel knob removal tool according to claim 1, characterized in that: One end of the handle away from the clamping portion is wrapped with anti-slip material.
3. The aircraft audio control panel knob removal tool according to claim 1, characterized in that: When the end surfaces of the two clamping parts abut against each other, the clamping space formed by the two cavities is cylindrical.
4. The aircraft audio control panel knob removal tool according to claim 1, characterized in that: At least one side surface of the two handles is coplanar.
5. The aircraft audio control panel knob removal tool according to claim 4, characterized in that: One of the handles is provided with a groove; the two handles are engaged through the groove and are rotatably connected.
6. The aircraft audio control panel knob removal tool according to claim 5, characterized in that: The other handle is further provided with a connecting portion, and the connecting portion is embedded in the groove; As the two handles rotate outward, the inner wall of the groove and the connecting portion stop and limit.
7. The aircraft audio control panel knob removal tool according to claim 6, characterized in that: An outer wall of the connecting portion and / or an inner wall of the groove are provided with an arc surface.
8. The aircraft audio control panel knob removal tool according to claim 1, characterized in that: The outer walls of the two clamping parts respectively have a tapered surface, and the diameter of the tapered surface gradually increases from the end away from the handle to the end close to the handle.
9. The aircraft audio control panel knob removal tool according to claim 1, characterized in that: The inner walls of the two clamping parts are wrapped with soft material.
10. The aircraft audio control panel knob removal tool according to claim 1, characterized in that: The rotating connection portion of the handle divides the handle into a clamping portion and a gripping portion, and the length of the gripping portion is more than twice the length of the clamping portion.