Earphone positioning jig

Abstract

The utility model relates to the technical field of positioning jigs, and particularly discloses an earphone positioning jig. The jig comprises a fixing block, a limiting block, a supporting structure and a bayonet wrench. A limiting groove for accommodating the head is formed in the top end of the fixing block, a positioning groove for accommodating the handle is formed in the bottom end of the fixing block, and the groove bottom of the limiting groove is communicated with the positioning groove; the limiting block can move between a first clamping position and a first avoiding position, and when the limiting block is located at the first clamping position, the head is clamped between the groove bottom of the limiting groove and the limiting block; the supporting structure can swing between a second clamping position and a second avoiding position, and when the supporting structure is located at the second clamping position, the handle part is clamped between the groove bottom of the positioning groove and the supporting structure; the bayonet wrench can swing between the locking position and the loosening position, and when the bayonet wrench is located at the locking position, the supporting structure is clamped between the bayonet wrench and the fixing block. According to the jig, by means of the limiting blocks and the supporting structures, selective clamping of earphone products is achieved, the positioning effect is good, efficiency is high, and the specific structure of the jig is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning jigs, in particular to an earphone positioning jig. Background Art

[0002] With the development of technology, the performance of Bluetooth headsets is getting higher and higher, and the design structure of Bluetooth headsets has become more complicated. Due to the complex design structure of the Bluetooth headset motherboard cable, it is easy to cause the motherboard cable to tear during the operation. During the assembly process of materials, Bluetooth headsets will be frequently subjected to pressure. If the positioning effect of the positioning fixture on the Bluetooth headset cannot meet the design requirements, the position of the Bluetooth headset will change, resulting in poor assembly. Therefore, in order to improve the yield rate of the headset and ensure the processing quality of the headset, the positioning effect of the positioning fixture on the Bluetooth headset is crucial.

[0003] In the prior art, common positioning jigs are provided with a jig body and a lifting mechanism. The operator positions the Bluetooth headset by pressing down on the spring-type lifting mechanism. The operation steps are complicated and the operation is difficult. When opening the lifting mechanism that fixes the product, it is easy to scrape the motherboard cable, causing the Bluetooth headset to be scrapped. Moreover, the lifting mechanism is difficult to maintain after being damaged. When damaged, the mechanism needs to be replaced as a whole. The steps for replacing the mechanism are cumbersome and the maintenance cost is high.

[0004] Therefore, it is urgent to optimize the structure of the earphone positioning fixture to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an earphone positioning fixture to improve the positioning efficiency of the earphone, ensure the positioning effect of the earphone product, and reduce the difficulty of maintenance.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The earphone positioning fixture is used to position an earphone product, and the earphone product has a handle and a head fixedly connected to one end of the handle, and the earphone positioning fixture comprises a fixing block, a limiting block, a supporting structure and a bayonet wrench; a limiting groove for accommodating the head is provided at the top of the fixing block, and a positioning groove for accommodating the handle is provided at the bottom, and the bottom of the limiting groove is communicated with the positioning groove; the limiting block is movably mounted on the fixing block, and the limiting block can move between a first clamping position and a first avoidance position relative to the fixing block, and when the limiting block is in the first avoidance position, the limiting block and the head located in the limiting groove are spaced apart, and when the limiting block is in the first clamping position, the head is clamped between the bottom of the limiting groove and the limiting block. ; The supporting structure is hinged to the fixed block, and the supporting structure can swing between a second clamping position and a second avoidance position relative to the fixed block. When the supporting structure is in the second avoidance position, the supporting structure and the handle located in the positioning groove are spaced apart. When the supporting structure is in the second clamping position, the handle is clamped between the bottom of the positioning groove and the supporting structure. The bayonet wrench is hinged to the fixed block, and the bayonet wrench can swing between a locking position and a releasing position relative to the fixed block. When the bayonet wrench is in the locking position, the supporting structure is clamped between the bayonet wrench and the fixed block. When the bayonet wrench is in the releasing position, the bayonet wrench and the supporting structure are spaced apart.

[0008] As a preferred technical solution of the earphone positioning fixture, the bayonet wrench is elastically connected to the fixing block via an elastic member, and the elastic member is used to drive the bayonet wrench to move to the locking position.

[0009] As an optimal technical solution for the headphone positioning fixture, the middle part of the bayonet wrench is hinged to the fixed block, one end of the bayonet wrench is provided with an operating rod, and the other end is bent with a snap hook, the operating rod passes through the fixed block, and the snap hook is used to press the support structure.

[0010] As a preferred technical solution of the earphone positioning fixture, the support structure includes a support body and a flexible insulating pad detachably mounted on the support body, and the flexible insulating pad is used to press the handle.

[0011] As a preferred technical solution for the headphone positioning jig, the flexible insulating pad is installed in the middle part of the support body, the support body has a first end and a second end relative to each other, the first end is hinged to the fixed block, and when the support structure is in the second clamping position, the second end can be clamped between the bayonet wrench and the fixed block.

[0012] As a preferred technical solution for the headphone positioning jig, the flexible insulating pad has a curved surface, which is used to fit the surface of the handle. When the supporting structure is in the second clamping position, the distance between one end of the curved surface close to the first end and the bottom of the positioning groove is a first distance, and the distance between one end of the curved surface close to the second end and the bottom of the positioning groove is a second distance, and the first distance is greater than the second distance.

[0013] As a preferred technical solution for the earphone positioning fixture, a first adsorption component is fixedly connected to the support body, and a second adsorption component is fixedly connected to the fixed block. When the support structure is in the second clamping position, the first adsorption component repels the second adsorption component.

[0014] As a preferred technical solution of the earphone positioning jig, the earphone positioning jig further includes a carrier structure, the fixing block is fixedly connected to the carrier structure, and the carrier structure is used to connect to a processing machine tool.

[0015] As a preferred technical solution of the earphone positioning fixture, the carrier structure includes a carrier body and a plurality of third adsorption parts fixedly connected to the surface of the carrier body.

[0016] As a preferred technical solution for the earphone positioning fixture, a plurality of positioning holes are recessed on the carrier structure.

[0017] Beneficial effects of the utility model:

[0018] The earphone positioning jig utilizes the design that the bottom of the limiting groove is connected to the positioning groove, and provides accommodation space for the handle and head of the earphone product respectively, thereby achieving the initial limiting purpose of the earphone product. The risk of the earphone product being accidentally displaced when the limiting block and the supporting structure clamp the earphone product is reduced, thereby ensuring the positioning effect of the earphone product, reducing the probability of repeated clamping, and improving the positioning efficiency of the earphone positioning jig. Through the selective clamping of the earphone product by the limiting block and the supporting structure, the positioning purpose of the head and handle can be achieved respectively, thereby limiting the displacement and rotation of the earphone product, and ensuring that the position of the earphone product does not change during the subsequent processing. Moreover, the use of a bayonet wrench can achieve selective locking of the support structure, achieving the design purpose of snap-fitting the support structure, thereby improving the positioning stability of the support structure on the handle, and further reducing the risk of position displacement of the earphone product. The above structural improvements simplify the structure of the supporting structure, reduce the difficulty of operating the supporting structure, and reduce the workload of the operators; at the same time, the above design also optimizes the layout of the headphone positioning fixture, so that all components except the fixed block are directly connected to the fixed block, so that when the components are damaged, the corresponding components can be directly replaced, which reduces the difficulty of maintenance of each component, greatly reduces the scrapping of products, and reduces the cost of replacing components. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an earphone product provided by an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the earphone positioning fixture provided by the embodiment of the utility model. Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the structure of the earphone positioning fixture provided by the embodiment of the utility model. Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the structure of the earphone positioning fixture and earphone product provided by the embodiment of the utility model. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the structure of the earphone positioning fixture and earphone product provided by the embodiment of the utility model. Figure 2 ;

[0024] Figure 6 It is a structural schematic diagram of a bayonet wrench, a supporting structure, a second body and a third body provided in an embodiment of the utility model;

[0025] Figure 7It is a cross-sectional view of the bayonet wrench, the supporting structure, the second body and the third body provided in the embodiment of the utility model.

[0026] In the figure:

[0027] 100, limit block; 110, movable body; 120, pressing head;

[0028] 200, fixed block; 201, limit groove; 202, positioning groove; 203, avoidance hole; 210, first body; 220, second body; 230, third body;

[0029] 300, carrier structure; 310, carrier body; 311, first positioning hole; 312, second positioning hole; 320, third adsorption member; 330, nameplate;

[0030] 400, bayonet wrench; 410, operating lever; 420, snap hook;

[0031] 500, support structure; 510, support body; 520, first adsorption member; 530, insulating pin; 540, flexible insulating pad;

[0032] 600, elastic parts;

[0033] 900, headphone product; 910, handle; 920, head. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] like Figures 1 to 7As shown, the present embodiment provides an earphone positioning fixture for positioning an earphone product 900, the earphone product 900 having a handle 910 and a head 920 fixedly connected to one end of the handle 910, the earphone positioning fixture comprising a fixing block 200, a limiting block 100, a supporting structure 500 and a bayonet wrench 400; a limiting groove 201 for accommodating the head 920 is provided at the top of the fixing block 200, a positioning groove 202 for accommodating the handle 910 is provided at the bottom, and the bottom of the limiting groove 201 is connected to the positioning groove 202; the limiting block 100 is movably mounted on the fixing block 200, and the limiting block 100 can move between a first clamping position and a first avoidance position relative to the fixing block 200, when the limiting block 100 is in the first avoidance position, the limiting block 100 and the head 920 located in the limiting groove 201 are spaced apart, when the limiting block 100 is in the first clamping position, the head 920 is clamped in The bottom of the limiting groove 201 is between the limiting block 100; the supporting structure 500 is hinged to the fixed block 200, and the supporting structure 500 can swing between the second clamping position and the second avoidance position relative to the fixed block 200. When the supporting structure 500 is in the second avoidance position, the supporting structure 500 and the handle 910 located in the positioning groove 202 are spaced apart. When the supporting structure 500 is in the second clamping position, the handle 910 is clamped between the bottom of the positioning groove 202 and the supporting structure 500; the bayonet wrench 400 is hinged to the fixed block 200, and the bayonet wrench 400 can swing between the locking position and the releasing position relative to the fixed block 200. When the bayonet wrench 400 is in the locking position, the supporting structure 500 is clamped between the bayonet wrench 400 and the fixed block 200. When the bayonet wrench 400 is in the releasing position, the bayonet wrench 400 and the supporting structure 500 are spaced apart.

[0039] In this embodiment, the earphone product 900 is a TWS (true wireless stereo) Bluetooth earphone. In other implementations of this embodiment, the earphone product 900 is other types of earphones. The specific earphone type is determined by the staff in this field according to the actual project, and will not be elaborated here.

[0040] The earphone positioning fixture utilizes the design that the bottom of the limiting groove 201 is connected to the positioning groove 202, and provides accommodation space for the handle 910 and the head 920 of the earphone product 900, thereby achieving the purpose of initial positioning of the earphone product 900. The risk of the earphone product 900 being accidentally displaced when the limiting block 100 and the supporting structure 500 clamp the earphone product 900 is reduced, thereby ensuring the positioning effect of the earphone product 900, reducing the probability of repeated clamping, and improving the positioning efficiency of the earphone positioning fixture. Through the selective clamping of the earphone product 900 by the limiting block 100 and the supporting structure 500, the positioning purpose of the head 920 and the handle 910 can be achieved respectively, thereby limiting the displacement and rotation of the earphone product 900, and ensuring that the posture of the earphone product 900 does not change during the subsequent processing. Moreover, the bayonet wrench 400 can be used to selectively lock the support structure 500, achieving the design purpose of snap-fitting the support structure 500, thereby improving the positioning stability of the support structure 500 on the handle 910, and further reducing the risk of positional displacement of the earphone product 900. The above structural improvements simplify the structure of the support structure 500, reduce the difficulty of operating the support structure 500, and reduce the workload of the operator; at the same time, the above design also optimizes the layout of the earphone positioning fixture, so that all components except the fixing block 200 are directly connected to the fixing block 200, so that when a component is damaged, the corresponding component can be directly replaced, which reduces the difficulty of maintaining each component, greatly reduces the scrapping of the product, and reduces the cost of replacing components.

[0041] Specifically, the material of the fixing block 200 is POM (polyformaldehyde); the material of the limiting block 100 is POM, and the material of the bayonet wrench 400 is 45 steel (S45C).

[0042] In this embodiment, the design of the support structure 500 hinged on the fixed block 200 replaces the conventional jacking support mechanism, thereby reducing the risk of direct damage to the headphone product 900 when pressing the support mechanism, reducing the probability of the motherboard cable on the headphone product 900 being scratched, and improving the processing yield rate of the headphone product 900.

[0043] Exemplarily, the limit block 100 includes a movable body 110 and a pressing head 120 fixed to one end of the movable body 110, the movable body 110 is slidably disposed on the top of the fixed block 200, and the pressing head 120 is used to contact the surface of the head 920. With the above design, the limit block 100 can limit the position of the head 920 in the limit groove 201.

[0044] In this embodiment, the fixing block 200 includes a first body 210 and a second body 220 and a third body 230 detachably mounted on the first body 210, the bayonet wrench 400 is hinged to the second body 220, and the supporting structure 500 is hinged to the third body 230. The split design of the fixing block 200 reduces the production cost and the manufacturing difficulty of the headphone positioning fixture.

[0045] In this embodiment, the bayonet wrench 400 is elastically connected to the fixing block 200 through an elastic member 600, and the elastic member 600 is used to drive the bayonet wrench 400 to move to the locking position. Specifically, the elastic member 600 is a spring. With the provision of the elastic member 600, the bayonet wrench 400 can be automatically reset, thereby ensuring the snap-on effect of the bayonet wrench 400 on the support structure 500, reducing the risk of the bayonet wrench 400 being loosened due to an accident, thereby further improving the positioning effect of the earphone positioning fixture on the handle 910.

[0046] Furthermore, the middle part of the bayonet wrench 400 is hinged to the fixed block 200, an operating rod 410 is provided at one end of the bayonet wrench 400, and a snap hook 420 is bent at the other end, the operating rod 410 passes through the fixed block 200, and the snap hook 420 is used to press the support structure 500. The provision of the operating rod 410 reduces the difficulty for the operator to adjust the position of the bayonet wrench 400, reduces the workload of the operator, and helps to optimize the specific structure of the earphone positioning fixture; the snap hook 420 is used to achieve the purpose of snapping and positioning the support structure 500, ensuring the stable positioning of the support structure 500 to the handle 910. The above structural design is simple and reliable, realizes the optimized layout of the bayonet wrench 400, occupies a small space and has a low production cost, and ensures the long-term stable operation of the earphone positioning fixture. Specifically, the fixed block 200 is penetrated with an avoidance hole 203, and the operating rod 410 passes through the avoidance hole 203.

[0047] In the present embodiment, the support structure 500 includes a support body 510 and a flexible insulating pad 540 detachably mounted on the support body 510, and the flexible insulating pad 540 is used to press the handle 910. Specifically, the flexible insulating pad 540 is an electrostatic rubber. Specifically, the material of the support body 510 is 45 steel. The provision of the flexible insulating pad 540 reduces the risk of deformation of the handle 910 and avoids surface scratches on the handle 910. On the basis of the above, it also ensures the positioning effect of the handle 910 and ensures the positioning stability of the headphone product 900. The detachable installation of the flexible insulating pad 540 on the support body 510 reduces the difficulty of replacing the flexible insulating pad 540, thereby simplifying the maintenance process, helping to reduce the workload of operators and improving the maintenance efficiency of the headphone positioning fixture.

[0048] Furthermore, the flexible insulating pad 540 is installed in the middle of the support body 510. The support body 510 has a first end and a second end opposite to each other. The first end is hinged to the fixing block 200. When the support structure 500 is in the second clamping position, the second end can be clamped between the bayonet wrench 400 and the fixing block 200. By limiting the installation positions of the first end, the second end and the flexible insulating pad 540, the optimized layout of the support structure 500 can be achieved, which occupies a small space and has a low production cost, thereby ensuring the long-term stable operation of the earphone positioning fixture.

[0049] Furthermore, the flexible insulating pad 540 has an arcuate surface, and the arcuate surface is used to fit the surface of the handle 910. When the support structure 500 is in the second clamping position, the distance between the end of the arcuate surface close to the first end and the bottom of the positioning groove 202 is a first distance, and the distance between the end of the arcuate surface close to the second end and the bottom of the positioning groove 202 is a second distance, and the first distance is greater than the second distance. The limitation that the first distance is greater than the second distance optimizes the shape of the flexible insulating pad 540, reduces the risk of position conflict between the flexible insulating pad 540 and the handle 910 during the swinging process, thereby helping to improve the positioning effect of the headphone positioning fixture on the headphone product 900 and reduce the undesirable performance of the motherboard cable being scraped off.

[0050] In this embodiment, the support structure 500 further includes an insulating pin 530, which can be simultaneously connected to the support body 510 and the flexible insulating pad 540. Specifically, the insulating pin 530 is made of silicone. The insulating pin 530 enables the flexible insulating pad 540 to be detachably installed on the support body 510. The above design is simple and reliable, has high connection stability and is easy to disassemble and assemble, which helps to control the manufacturing cost of the headphone positioning fixture and reduce the space occupied.

[0051] Exemplarily, a first adsorbent 520 is fixedly connected to the support body 510, and a second adsorbent is fixedly connected to the fixed block 200. When the support structure 500 is in the second clamping position, the first adsorbent 520 repels the second adsorbent. Specifically, both the first adsorbent 520 and the second adsorbent are permanent magnets. According to the design of the repulsion between the first adsorbent 520 and the second adsorbent, the support structure 500 is directly ejected in a direction away from the positioning groove 202 after the bayonet wrench 400 is loosened. The above design simplifies the steps of removing the headphone product 900, reduces the difficulty of disassembling and assembling the headphone positioning fixture, and reduces the workload of the operator.

[0052] In this embodiment, the earphone positioning fixture further includes a carrier structure 300, the fixing block 200 is fixedly connected to the carrier structure 300, and the carrier structure 300 is used to connect to the processing machine tool. The setting of the carrier structure 300 facilitates the installation and positioning of the earphone positioning fixture on the processing machine tool, ensuring that the earphone product 900 can be accurately positioned in the subsequent processing process. The setting of the carrier structure 300 ensures the accuracy of the subsequent processing and improves the yield rate of the earphone product 900.

[0053] Furthermore, the carrier structure 300 includes a carrier body 310 and a plurality of third adsorbents 320 fixedly connected to the surface of the carrier body 310, and the processing machine tool has a fourth adsorbent, the number of the fourth adsorbents is the same as that of the third adsorbents 320, and the fourth adsorbents are adsorbed one-to-one with the third adsorbents 320. Specifically, the material of the carrier body 310 is alloy aluminum (AL6061); the third adsorbent 320 is a permanent magnet, and the fourth adsorbent is a metal cover. The carrier body 310 plays the role of supporting all other components on the entire carrier structure 300. With the help of the arrangement of the third adsorbent 320 and the fourth adsorbent, the relative position between the fourth adsorbent and the third adsorbent 320 can be fixed, so that the relative position between the processing machine tool and the earphone positioning fixture is determined, so as to ensure that the processing machine tool can smoothly process the earphone product 900 positioned on the earphone positioning fixture, thereby ensuring the accuracy and efficiency of subsequent processing.

[0054] Exemplarily, the carrier structure 300 is provided with a plurality of positioning holes, and the processing machine tool has a plurality of positioning pins, the number of the positioning pins is the same as the number of the positioning holes, and the positioning pins and the positioning holes are plugged in and matched one-to-one. Specifically, the positioning holes include a plurality of first positioning holes 311 and a plurality of second positioning holes 312, and the positioning pins include a first positioning pin and a second positioning pin, the number of the first positioning pins is the same as the number of the first positioning holes 311 and they correspond one-to-one, and the number of the second positioning pins is the same as the number of the second positioning holes 312 and they correspond one-to-one; the processing machine tool also includes an automated robotic arm for carrying the earphone positioning jig, the first positioning pin is fixed on the metal cover plate, and the second positioning pin is provided on the clamp of the automated robotic arm. With the above design, the carrier structure 300 can interact smoothly with the metal cover plate and the automated robotic arm, further ensuring the accuracy and efficiency of subsequent processing.

[0055] In this embodiment, a nameplate 330 is fixedly mounted on the surface of the carrier body 310 by screws, and the nameplate 330 is used to record the workpiece information of the earphone positioning fixture.

[0056] This embodiment also provides an earphone positioning method, which is applied to the above-mentioned earphone positioning fixture, and includes the following steps:

[0057] Step 1: Move the limit block 100 to the first avoidance position, move the support structure 500 to the second avoidance position, pass the handle 910 of the earphone product 900 through the limit groove 201 and extend it into the positioning groove 202, and place the head 920 of the earphone product 900 in the limit groove 201.

[0058] Step 2: Move the limit block 100 to the first clamping position, move the support structure 500 to the second clamping position, move the bayonet wrench 400 to the locking position, and make the bayonet wrench 400 buckled on the support structure 500.

[0059] Step 3: Use processing machine tools to perform processing operations.

[0060] The present embodiment also provides an earphone disassembly method, which is applied to the above-mentioned earphone positioning fixture, including the following steps: moving the bayonet wrench 400 to a loosened position, and when the support structure 500 is driven away from the positioning groove 202 by the repulsive force between the first adsorption component 520 and the second adsorption component, moving the limit block 100 to a first avoidance position, and taking out the earphone product 900.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An earphone positioning fixture, used for positioning an earphone product (900), wherein the earphone product (900) comprises a handle (910) and a head (920) fixed to one end of the handle (910), characterized in that: The earphone positioning fixture comprises: A fixing block (200) having a limiting groove (201) at the top for accommodating the head (920) and a positioning groove (202) at the bottom for accommodating the handle (910), wherein the bottom of the limiting groove (201) is connected to the positioning groove (202); a limit block (100) movably mounted on the fixed block (200); the limit block (100) can move between a first clamping position and a first avoidance position relative to the fixed block (200); when the limit block (100) is in the first avoidance position, the limit block (100) and the head (920) located in the limit groove (201) are spaced apart; when the limit block (100) is in the first clamping position, the head (920) is clamped between the bottom of the limit groove (201) and the limit block (100); A support structure (500) is hinged to the fixed block (200), and the support structure (500) can swing between a second clamping position and a second avoidance position relative to the fixed block (200); when the support structure (500) is in the second avoidance position, the support structure (500) and the handle (910) located in the positioning groove (202) are spaced apart; when the support structure (500) is in the second clamping position, the handle (910) is clamped between the bottom of the positioning groove (202) and the support structure (500); The bayonet wrench (400) is hinged to the fixing block (200), and the bayonet wrench (400) can swing between a locking position and a release position relative to the fixing block (200). When the bayonet wrench (400) is in the locking position, the support structure (500) is clamped between the bayonet wrench (400) and the fixing block (200), and when the bayonet wrench (400) is in the release position, the bayonet wrench (400) and the support structure (500) are spaced apart.

2. The earphone positioning fixture according to claim 1, characterized in that: The bayonet wrench (400) is elastically connected to the fixing block (200) via an elastic member (600), and the elastic member (600) is used to drive the bayonet wrench (400) to move to the locking position.

3. The earphone positioning fixture according to claim 2, characterized in that: The middle part of the bayonet wrench (400) is hinged to the fixing block (200); an operating rod (410) is provided at one end of the bayonet wrench (400); a snap hook (420) is bent at the other end; the operating rod (410) passes through the fixing block (200); and the snap hook (420) is used to press the supporting structure (500).

4. The earphone positioning fixture according to claim 1, characterized in that: The support structure (500) comprises a support body (510) and a flexible insulating pad (540) detachably mounted on the support body (510), wherein the flexible insulating pad (540) is used to press against the handle (910).

5. The earphone positioning fixture according to claim 4, characterized in that: The flexible insulating pad (540) is installed in the middle of the supporting body (510), and the supporting body (510) has a first end and a second end opposite to each other, the first end is hinged to the fixing block (200), and when the supporting structure (500) is in the second clamping position, the second end can be clamped between the bayonet wrench (400) and the fixing block (200).

6. The earphone positioning fixture according to claim 5, characterized in that: The flexible insulating pad (540) has an arcuate surface, and the arcuate surface is used to fit the surface of the handle (910). When the support structure (500) is in the second clamping position, the distance between the end of the arcuate surface close to the first end and the bottom of the positioning groove (202) is a first distance, and the distance between the end of the arcuate surface close to the second end and the bottom of the positioning groove (202) is a second distance, and the first distance is greater than the second distance.

7. The earphone positioning fixture according to claim 4, characterized in that: A first adsorption component (520) is fixedly connected to the support body (510), and a second adsorption component is fixedly connected to the fixed block (200); when the support structure (500) is in the second clamping position, the first adsorption component (520) repels the second adsorption component.

8. The earphone positioning fixture according to any one of claims 1 to 7, characterized in that: The earphone positioning fixture also includes a carrier structure (300), the fixing block (200) is fixedly connected to the carrier structure (300), and the carrier structure (300) is used to connect to a processing machine tool.

9. The earphone positioning fixture according to claim 8, characterized in that: The carrier structure (300) comprises a carrier body (310) and a plurality of third adsorption members (320) fixedly connected to the surface of the carrier body (310).

10. The earphone positioning fixture according to claim 8, characterized in that: The carrier structure (300) is concavely provided with a plurality of positioning holes.

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