Conductive coating spraying positioning tool applied to ear wing

Abstract

The utility model provides a conductive coating spraying positioning tool applied to an ear wing. The conductive coating spraying positioning tool comprises a main body piece and a limiting piece. A boss is arranged on the main body piece, and the boss can be embedded into a sound cavity of the ear wing, so that the main body piece and the ear wing are positioned and assembled. The limiting piece is detachably connected to the outer side of the main body piece and used for being attached to a part of the non-conductive area of the lug wing machining face and limiting relative movement of the lug wing and the main body piece. On the basis, the limiting piece is further provided with a shielding part, the shielding part is used for being attached to the other part of the non-conductive area of the lug wing machining face so as to be matched with the limiting piece, full coverage of the non-conductive area is achieved, and the conductive coating glue is prevented from falling into the non-conductive area. According to the conductive coating spraying positioning tool applied to the lug wing, positioning of the lug wing is achieved, a non-conductive area is rapidly and accurately shielded, and therefore the efficiency and the yield of conductive coating spraying operation are improved.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment manufacturing technology, specifically relating to a conductive coating spraying and positioning fixture for ear wings. Background Technology

[0002] With advancements in health monitoring technology, wireless headphones integrating electroencephalogram (EEG) signal acquisition are increasingly being used. Currently, these headphones typically have conductive electrodes placed in the ear wing area, which contacts the skin of the ear, to collect EEG signals. Since the ear wing material itself is mostly non-conductive, such as silicone or plastic, a conductive coating is often applied locally to form electrodes on the conductive area of ​​the machined ear wing surface.

[0003] In existing processes, the key to localized spraying of the ear wing surface lies in masking non-conductive areas on the processed surface. However, because these areas are often small and irregular in shape, it is difficult to achieve rapid and precise masking. In practice, manual masking by operators is the primary method, which suffers from low efficiency and poor consistency, easily leading to defects such as conductive coating spillage into non-target areas, blurred electrode boundaries, and poor insulation between positive and negative electrodes. These defects not only reduce the quality and stability of signal acquisition but also make it difficult for this process to meet the efficiency and yield requirements of industrial production. Utility Model Content

[0004] This application provides a conductive coating spraying positioning fixture for ear wings, which enables the positioning of ear wings and the rapid and accurate masking of non-conductive areas, thereby improving the efficiency and yield of conductive coating spraying operations.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] A conductive coating spraying positioning fixture for use in ear wings is provided, comprising:

[0007] A main body having a boss for embedding into the ear wing's acoustic cavity, wherein when the boss is embedded into the acoustic cavity, the machined surface of the ear wing faces the same direction as the direction opposite to the main body; and

[0008] A limiting member is detachably connected to the outside of the main body to fit a portion of the non-conductive area of ​​the ear wing's machined surface and to restrict the relative movement of the ear wing and the main body.

[0009] The limiting member has a shielding portion; when the limiting member is in contact with the ear wing, the limiting member is in contact with a portion of the non-conductive area of ​​the ear wing processing surface, and the surface of the shielding portion is in contact with another portion of the non-conductive area of ​​the ear wing processing surface, so as to restrict the conductive coating from falling into the non-conductive area.

[0010] In one possible implementation, the raised surface of the boss has a mating portion for embedding the ear wing sound outlet hole.

[0011] In one possible implementation, a slot is provided on the protruding surface of the boss or on the main body, and the limiting member or the shielding part has an elastic snap-fit ​​member suitable for insertion into the slot;

[0012] When the main body and the limiting member are in contact, the elastic snap-fit ​​member is adapted to be inserted into the slot and undergo elastic deformation, so that the elastic snap-fit ​​member is in interference fit with the inner wall of the slot, thereby restricting the relative movement of the main body and the limiting member.

[0013] In one possible implementation, the limiting member or the shielding part is provided with a slot, and the protruding surface of the boss or the main body has an elastic snap-fit ​​member suitable for insertion into the slot;

[0014] When the main body and the limiting member are in contact, the elastic snap-fit ​​member is adapted to be inserted into the slot and undergo elastic deformation, so that the elastic snap-fit ​​member is in interference fit with the inner wall of the slot, thereby restricting the relative movement of the main body and the limiting member.

[0015] In one possible implementation, the limiting member has an outer covering on the side facing away from the shielding portion, and the outer covering is used to cover part of the outer peripheral surface of the ear wing.

[0016] In one possible implementation, the inner side of the shielding portion adopts an arcuate structure adapted to the processing surface of the ear wing, and its outer end has a bent portion extending toward the main body, and the bent portion is used to abut against the outer wall of the ear wing facing away from the outer covering portion.

[0017] In one possible implementation, an outer part extending toward the bent portion is fixedly provided on the outer side of the main body, and a groove is provided on the side of the outer part facing away from the boss, and the groove penetrates the extended end face of the outer part.

[0018] The extended end of the bent portion has a protrusion adapted to be embedded in the groove, and when the protrusion is embedded in the groove, the outer wall of the protrusion abuts against the bottom of the groove.

[0019] In one possible implementation, both the main body and the limiting member have markings on their outer walls for matching the left or right ear wing.

[0020] In one possible implementation, a weight-relief groove is formed on the raised surface of the boss;

[0021] When the boss is embedded in the sound cavity, the weight relief groove is arranged to avoid the sound outlet hole of the ear wing.

[0022] In one possible implementation, the main body has an outwardly extending first link on the side facing away from the boss;

[0023] And / or, the limiting member has an outwardly extending second link on the side opposite to the main body.

[0024] In this embodiment, the protrusion on the main body can be embedded into the sound cavity of the ear wing, enabling rapid and precise positioning and assembly of the ear wing and the main body. Furthermore, connecting the limiting member to the main body allows the limiting member to conform to a portion of the non-conductive area of ​​the ear wing's machined surface, while the shielding portion conforms to another portion of the non-conductive area, thus achieving complete coverage of the non-conductive area and effectively preventing the adhesion of the conductive coating.

[0025] In the above process, the ear wing achieves initial positioning through its inherent acoustic cavity structure and engagement with the boss, ensuring the certainty and consistency of the orientation of the processed surface. The limiting component and its shielding part then physically fit and cover the small and irregularly shaped area to be shielded. Specifically, the engagement between the boss and the acoustic cavity restricts multiple degrees of freedom of the ear wing, while the connection of the limiting component further constrains relative displacement. This allows the shielding part to be stably and accurately aligned to the design position, ensuring that the position of the shielding boundary remains highly consistent during repeated disassembly and assembly and batch operations, thereby eliminating coating overflow problems caused by shielding deviations.

[0026] The conductive coating spraying and positioning fixture for ear wings provided in this embodiment transforms the unstable operation, which relies on individual skills and visual judgment, into a standardized and repeatable positioning and masking process guaranteed by mechanical structures, compared with existing technologies. This not only significantly improves the efficiency and consistency of individual ear wing spraying operations, but also fundamentally guarantees the clarity of the conductive electrode boundaries and the reliability of insulation between the positive and negative electrodes, thereby improving the quality and stability of EEG signal acquisition. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A three-dimensional structural schematic diagram of the conductive coating spraying positioning fixture provided in the embodiments of this application;

[0029] Figure 2 This is a three-dimensional structural diagram of the main body and limiting member used in the embodiments of this application from an exploded perspective;

[0030] Figure 3 This is a three-dimensional structural diagram of the main component used in the embodiments of this application;

[0031] Figure 4 This is a cross-sectional structural diagram of the main component used in the embodiments of this application;

[0032] Figure 5 This is a three-dimensional structural diagram of the limiting member used in the embodiments of this application;

[0033] Figure 6 This is a cross-sectional view of the limiting member used in the embodiments of this application;

[0034] Explanation of reference numerals in the attached drawings: 1. Main body component; 11. Boss; 111. Connecting part; 2. Limiting component; 21. Shielding part; 211. Bending part; 212. Protrusion; 22. Outer part; 3. Slot; 4. Elastic snap-fit ​​component; 5. External part; 51. Groove; 6. Identification part; 7. Weight relief groove; 8. First connecting rod; 9. Second connecting rod; 100. Sound cavity; 200. Sound outlet hole. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0036] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0038] 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.

[0039] Please refer to the following: Figures 1 to 6 The conductive coating spraying and positioning fixture for ear wings provided in this application will now be described. The conductive coating spraying and positioning fixture for ear wings proposed in this application includes a main body 1 and a limiting member 2.

[0040] The main body 1 is provided with a boss 11 for embedding into the ear wing cavity 100. When the boss 11 is embedded into the cavity 100, the machined surface of the ear wing faces the same direction as its direction away from the main body 1. This design achieves initial positioning through the inherent structure of the ear wing cavity 100, ensuring the certainty and consistency of the orientation of the machined surface.

[0041] The limiting member 2 is detachably connected to the outside of the main body 1 (i.e., the side facing the boss 11). The limiting member 2 is used to fit a portion of the non-conductive area of ​​the ear wing processing surface and restrict the relative movement of the ear wing and the main body 1. This limiting relationship provides a stable basis for subsequent precise shielding.

[0042] The limiting member 2 has a shielding portion 21. When the limiting member 2 is in contact with the ear wing, the limiting member 2 is in contact with a portion of the non-conductive area of ​​the ear wing's machined surface, and the surface of the shielding portion 21 is in contact with another portion of the non-conductive area of ​​the ear wing's machined surface. In other words, the shielding portion 21 can work together with the limiting member 2 to achieve full coverage of the non-conductive area, restricting the conductive coating from falling into the non-conductive area and concentrating the conductive coating in the conductive area.

[0043] In this embodiment, by embedding the boss 11 into the sound cavity 100 of the ear wing, the ear wing and the main body 1 can be quickly and accurately positioned and assembled. Based on this, connecting the limiting member 2 to the main body 1 allows the limiting member 2 to conform to a portion of the non-conductive area of ​​the ear wing's processed surface, while the shielding part 21 conforms to another portion of the non-conductive area, thereby achieving complete coverage of the non-conductive area and effectively preventing the adhesion of the conductive coating.

[0044] In the above process, the engagement between the boss 11 and the acoustic cavity 100 restricts multiple degrees of freedom of the ear wing, while the connection of the limiting member 2 further constrains the relative displacement, enabling the shielding part 21 to be stably and accurately aligned to the designed position. This mechanical positioning method ensures that the position of the shielding boundary remains highly consistent during repeated disassembly and assembly and batch operations, thereby eliminating problems such as coating overflow, blurred electrode boundaries, and poor insulation caused by shielding deviations.

[0045] The conductive coating spraying and positioning fixture for ear wings provided in this embodiment transforms the unstable operation, which relies on individual skills and visual judgment, into a standardized and repeatable positioning and masking process guaranteed by mechanical structures, compared with existing technologies. This not only significantly improves the efficiency and consistency of individual ear wing spraying operations, but also fundamentally guarantees the clarity of the conductive electrode boundaries and the reliability of insulation between the positive and negative electrodes, thereby improving the quality and stability of EEG signal acquisition.

[0046] In some embodiments, such as Figure 2 and Figure 4 As shown, the raised surface of the boss 11 has an upwardly raised mating portion 111, which is used to insert into the sound outlet 200 of the ear wing.

[0047] By adopting the above technical solution, a radial positioning point (the mating part 111 and the sound cavity 100 cooperate) is added on the basis of axial positioning, which achieves more precise circumferential positioning and prevents the ear wings from moving relative to each other on the tooling.

[0048] In some embodiments, such as Figure 2 , Figure 4 and Figure 5 As shown, a slot 3 is provided on the raised surface of the boss 11 or on the main body 1; in this embodiment, the slot 3 is provided on the raised surface of the boss 11 (specifically, on the raised end surface of the aforementioned docking portion 111).

[0049] Based on this, the limiting member 2 or the shielding part 21 has an elastic snap-fit ​​member 4; in this embodiment, the elastic snap-fit ​​member 4 is provided on the lower side of the shielding part 21.

[0050] In actual use, the elastic snap-fit ​​part 4 is suitable for insertion into the slot 3. That is, when the main body 1 and the limiting part 2 are connected, the elastic snap-fit ​​part 4 is inserted into the slot 3 and undergoes elastic deformation, so that the elastic snap-fit ​​part 4 is interference-fitted with the inner wall of the slot 3.

[0051] By adopting the above technical solution and utilizing the elastic snap-fit ​​principle, the relative movement of the main body 1 and the limiting part 2 can be effectively restricted, thereby achieving a stable connection and quick assembly / disassembly between the two.

[0052] In some embodiments, the limiting member 2 or the shielding part 21 is provided with a slot 3; at the same time, the protruding surface of the boss 11 or the main body 1 is provided with an elastic snap-fit ​​member 4.

[0053] In actual use, the elastic snap-fit ​​4 is suitable for insertion into the slot 3, so that when the main body 1 and the limiting member 2 are connected, the elastic snap-fit ​​4 is inserted into the slot 3 and undergoes elastic deformation, so that the elastic snap-fit ​​4 is interference-fitted with the inner wall of the slot 3.

[0054] This embodiment swaps the design positions of slot 3 and elastic snap-fit ​​4 from the previous embodiment, while maintaining the same beneficial effects. That is, this structure also achieves a stable connection and quick assembly / disassembly between the main body 1 and the limiting member 2, providing another optional assembly method.

[0055] In some embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, the limiting member 2 has an outer covering 22 on the side opposite to the shielding part 21, which is used to cover part of the outer peripheral surface of the ear wing.

[0056] By adopting the above technical solution, the design provides auxiliary fixing force by holding the ear flap tightly from the outside, enhancing the overall stability of the ear flap on the tooling, and preventing it from undergoing slight displacement due to airflow and other factors during the spraying process.

[0057] In some embodiments, such as Figure 5 As shown, the inner side of the shielding part 21 adopts an arc surface structure that is compatible with the processing surface of the ear wing; based on this, the outer end of the shielding part 21 has a bent part 211, which extends toward the main body 1.

[0058] In actual use, the bent part 211 is used to abut against the outer wall of the ear wing facing away from the outer cover 22. This design allows the shielding part 21 to fit closely to the irregular contour of the ear wing surface. At the same time, the abutment between the bent part 211 and the outer wall of the ear wing forms a stable support, ensuring that the shielding part 21 will not deform or shift when subjected to spraying impact.

[0059] In some embodiments, such as Figure 2 , Figure 4 and Figure 6 As shown, an external connection part 5 is fixedly provided on the outer side of the main body 1, and the external connection part 5 extends toward the bending part 211.

[0060] The outer part 5 has a groove 51 on the side facing away from the boss 11, and the groove 51 penetrates the extended end face of the outer part 5; at the same time, the extended end of the bent part 211 has a protrusion 212, which is adapted to be inserted into the groove 51.

[0061] By adopting the above technical solution, when the protrusion 212 is embedded in the groove 51, the outer wall of the protrusion 212 abuts against the bottom of the groove 51. This structure provides a clear installation positioning point for the bent part 211. That is, through the cooperation between the protrusion 212 and the groove 51, the relative positional accuracy between the limiting member 2 and the shielding part 21 and the main body 1 is further ensured, thereby indirectly ensuring the correspondence between the shielding part 21 and the non-conductive area of ​​the ear wing.

[0062] In some embodiments, such as Figure 1 and Figure 3As shown, both the main body 1 and the limiting member 2 have marking parts 6 on their outer walls. These marking parts 6 are used to match the left or right ear wing.

[0063] In actual use, the marking part 6 is used to identify the matching main body part 1 and the limiting part 2, and facilitates the selection for identification of the left ear wing and the right ear wing.

[0064] By adopting the above technical solution, this design guides operators to correctly assemble the tooling components corresponding to the left and right ears through clear visual markings, effectively avoiding occlusion errors caused by incorrect tooling installation, and improving the accuracy and efficiency of batch operations.

[0065] In some embodiments, such as Figure 2 and Figure 4 As shown, the boss 11 has a hollow internal structure, thereby reducing the overall weight. Alternatively, the boss 11 has a weight-relief groove 7 on its raised surface, which also serves the purpose of weight reduction. However, in this case, when the boss 11 is embedded in the sound cavity 100, the weight-relief groove 7 should be positioned to avoid the sound outlet 200 of the ear wing, thereby preventing glue overflow from occurring in the sound outlet 200 (and the microporous structure around the sound outlet 200).

[0066] By adopting the above technical solutions, the design of the hollow structure or unloading trough 7 firstly reduces the overall weight of the tooling, making it easier to operate.

[0067] In some embodiments, such as Figure 1 As shown, the main body 1 has a first connecting rod 8 extending outward on the side opposite to the boss 11; and / or, the limiting member 2 has a second connecting rod 9 extending outward on the side opposite to the main body 1.

[0068] In other words, this embodiment corresponds to three structural designs:

[0069] (a) The first connecting rod 8 is provided on the side of the main body 1 facing away from the boss 11, and the side of the limiting member 2 facing away from the main body 1 is a smooth curved surface.

[0070] (ii) The side of the main body 1 facing away from the boss 11 is a smooth curved surface, and the side of the limiting part 2 facing away from the main body 1 is provided with a second connecting rod 9;

[0071] (iii) A first connecting rod 8 is provided on the side of the main body 1 facing away from the boss 11, and a second connecting rod 9 is provided on the side of the limiting member 2 facing away from the main body 1.

[0072] The first link 8 or the second link 9 provides a standardized gripping or positioning interface for external robotic arms, fixtures, or operators. This design allows the entire tooling to be easily integrated into automated production lines to achieve automatic loading, unloading, and positioning; or, during manual operation, it provides a more effortless and stable gripping point, improving ergonomics.

[0073] Specifically, in structural design (I), the first link 8 facilitates the production line to fix or drive the main body 1, and is suitable for installation methods based on the main body 1.

[0074] In structural design (II), the second link 9 facilitates the operation of the limiting component 2 and is suitable for process flows that require frequent disassembly and assembly of the limiting component 2.

[0075] In structural design (III), the first link 8 and the second link 9 coexist, providing more installation and fixing points and operational possibilities for the tooling, adapting to more complex production scenarios and automation requirements.

[0076] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A conductive coating spray positioning tooling for application to the helix of the ear, characterised in that, The application relates to an earphone, which comprises a main body provided with a boss for embedding an ear wing sound cavity, and a processing surface of the ear wing faces the same direction as a back surface of the main body when the boss is embedded in the sound cavity; and a limiting member detachably connected to an outer side of the main body to fit a part of a non-conductive area of the processing surface of the ear wing and limit relative movement of the ear wing and the main body. The limiting member is provided with a shielding part; when the limiting member is connected to the ear wing, the limiting member is fitted to one part of the non-conductive area of the processing surface of the ear wing, and a surface of the shielding part is fitted to another part of the non-conductive area of the processing surface of the ear wing to limit a conductive coating from falling into the non-conductive area. The boss is provided with an abutting part on a convex surface of the boss for embedding a sound hole of the ear wing. The boss is provided with a slot on the convex surface or the main body, and the limiting member or the shielding part is provided with an elastic clamping member suitable for being inserted into the slot.

2. The electrically conductive coating spray application positioning tool for the tragus as defined in claim 1 wherein, When the main body and the limiting member are connected, the elastic clamping member is suitable for being inserted into the slot and elastically deformed, so that the elastic clamping member is in interference fit with an inner wall of the slot to limit relative movement of the main body and the limiting member.

3. The electrically conductive coating spray positioning tool for the tragus as claimed in claim 1 or 2, wherein The limiting member or the shielding part is provided with a slot, and the boss or the main body is provided with an elastic clamping member suitable for being inserted into the slot. When the main body and the limiting member are connected, the elastic clamping member is suitable for being inserted into the slot and elastically deformed, so that the elastic clamping member is in interference fit with an inner wall of the slot to limit relative movement of the main body and the limiting member.

4. The electrically conductive coating spray positioning tool for the tragus as claimed in claim 1 or 2, wherein The limiting member is provided with an outer wrapping part on a side away from the shielding part, and the outer wrapping part is used for wrapping a part of an outer circumferential surface of the ear wing. An inner side surface of the shielding part adopts an arc surface structure suitable for the processing surface of the ear wing, an outer end of the arc surface structure is provided with a bending part extending towards the main body, and the bending part is used for abutting against an outer wall of the ear wing away from the outer wrapping part.

5. The electrically conductive coating spray application positioning tool for the tragus as defined in claim 1 wherein, The main body is fixedly provided with an external connection part extending towards the bending part on an outer side of the main body, a side of the external connection part away from the boss is provided with a groove, and the groove penetrates through an extension end surface of the external connection part.

6. The electrically conductive coating spray application positioning tool for the tragus as defined in claim 5 wherein, An extension end of the bending part is provided with a protruding block suitable for being embedded in the groove, and when the protruding block is embedded in the groove, an outer wall of the protruding block abuts against a groove bottom of the groove.

7. The electrically conductive coating spray application positioning tool for the tragus as defined in claim 6 wherein, The main body and the limiting member are both provided with an identification part on an outer wall of the main body and the limiting member, and the identification part is used for matching a left ear wing or a right ear wing. The boss is provided with an unloading groove on a convex surface of the boss.

8. The electrically conductive coating spray application positioning tool for the tragus as defined in claim 1 wherein, When the boss is embedded in the sound cavity, the unloading groove is arranged to avoid the sound hole of the ear wing.

9. The electrically conductive coating spray application positioning tool for the tragus as defined in claim 1 wherein, A side of the main body away from the boss is provided with a first connecting rod extending outwards. And / or, a side of the limiting member away from the main body is provided with a second connecting rod extending outwards.

10. The electrically conductive coating spray application positioning tool for the tragus as defined in claim 1 wherein, ​ ​

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