Injection molding fixing mechanism for ear hanging part of earphone

Abstract

The utility model discloses an injection molding fixing mechanism for an ear hanging part of an earphone. Comprising a light guide seat, an inner frame body and a fixing seat, one end face of the inner frame body is provided with a butt joint port, the inner wall of the butt joint port is provided with a butt joint pin, the inner wall of the butt joint port is provided with a placing groove capable of containing the light guide seat, the light guide seat is provided with a light guide column, the light guide seat is placed in the placing groove in an aligned mode, and the top end of the light guide column penetrates through the inner frame body to be arranged outside. A cantilever is arranged at one end of the fixing base, a butt joint end is arranged at the tail end of the cantilever, the shape of the butt joint end corresponds to that of the butt joint port, and a butt joint groove is formed in the butt joint end. The light guide seat is installed on the inner frame body in advance, then the inner frame body is oppositely installed on the fixing seat, the three components are assembled into a whole, and the fixing seat and the inner frame body are fixed in a pluggable mode, so that the stability of the inner frame body in the injection molding process is guaranteed, the stability of the light guide seat can be met, and the service life of the light guide seat is prolonged. Therefore, the whole mold can be suitable for one-time injection molding work of the ear hanging part.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection molding fixing mechanism for an ear hook portion of an earphone. Background Art

[0002] As we all know, headphones are a pair of conversion units that receive electrical signals from a media player or receiver and convert them into audible sound waves using speakers close to the ears. Based on how they are worn, they can be categorized as in-ear headphones, headphones, and earhook headphones. Earhook headphones, with their elastic earhook, hang and clamp onto the back of the ear, providing a more secure fit and reducing the pressure on the external auditory canal, making them popular with users. However, compared to other types of headphones, the production of earhook headphones requires more sophisticated processing, particularly in the injection molding process between the light guide and internal hardware.

[0003] Currently, existing earphones have internal hardware components, such as an inner frame for mounting motherboard components and a light guide. Due to differences in material, the light guide and inner frame are separate components. However, during the one-shot injection molding process, both the light guide and the inner frame must be fixed simultaneously to ensure stability and a successful one-shot molding process.

[0004] Therefore, it is necessary to provide a fixing mechanism that can simultaneously fix the light guide column and the inner frame during injection molding. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an injection molding fixing mechanism for the ear hook portion of an earphone.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The top end of the light guide column passes through the inner frame and is placed on the outside of the earphone; one end of the fixing seat is used to be installed on the mold; the other end of the fixing seat is provided with a cantilever; the end of the cantilever is provided with a docking terminal, the shape of the docking terminal corresponds to the shape of the docking port, and the docking terminal is provided with a docking slot for inserting the docking pins; wherein, after the docking terminal is inserted into the docking port, the top end of the docking terminal presses against the light guide seat.

[0008] Preferably, a pressing protrusion is provided at the upper edge of the notch of the pair of slots, and the distal end of the pressing protrusion is inclined downward.

[0009] Preferably, the corners of the top pressing protrusion are all chamfered surfaces.

[0010] Preferably, the light guide seat is provided with at least two outwardly protruding positioning grooves on one end surface facing the docking end head, the docking end head is provided with a mounting hole, and a positioning column with a shape corresponding to the positioning groove is provided in the mounting hole.

[0011] Due to the adoption of the above-mentioned scheme, the utility model pre-installs the light guide seat on the inner frame, and then mounts the inner frame on the fixing seat, so that the three components are assembled into one. By means of the plug-in fixation between the fixing seat and the inner frame, the stability of the inner frame during injection molding is guaranteed, and the stability of the light guide seat can also be met, so that the whole can be suitable for the one-time injection molding of the ear hook part. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0013] Figure 2 It is a schematic structural diagram of the assembled embodiments of the present utility model.

[0014] Figure 3 It is a structural schematic diagram of the inner frame of an embodiment of the present utility model.

[0015] Figure 4 It is a structural schematic diagram of a fixing seat according to an embodiment of the present utility model.

[0016] Figure 5 It is a structural schematic diagram of the light guide seat of an embodiment of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0019] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, removable connections, or integral connections. They may refer to mechanical connections or electrical connections. They may refer to direct connections or indirect connections through an intermediary, and they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0020] like Figures 1 to 5 As shown, the present embodiment provides an injection molding fixing mechanism for the ear hook portion of an earphone, comprising a light guide seat 1, an inner frame 2, and a fixing seat 3. One end surface of the inner frame 2 is provided with a docking port 21, and the inner wall of the docking port 21 is provided with at least two pairs of pins 22. The top ends of the pairs of pins 22 extend to the outside of the docking port 21. The inner wall of the docking port 21 is provided with a placement groove 23 that can accommodate the light guide seat 1. The light guide seat 1 is provided with a light guide column 11, and the light guide seat 1 is placed in the placement groove 23. The top end of the light guide column 11 passes through the inner frame 2 and is placed outside. One end of the fixing seat 3 is used to be installed on the mold. The other end of the fixing seat 3 is provided with a cantilever 31. The end of the cantilever 31 is provided with a docking terminal 32. The shape of the docking terminal 32 corresponds to the shape of the docking port 21. The docking terminal 32 is provided with a docking slot 33 for inserting the pin 22; wherein, after the docking terminal 32 is inserted into the docking port 21, the top end of the docking terminal 32 is pressed against the light guide seat 1.

[0021] This embodiment mainly involves pre-installing the light guide seat 1 on the inner frame 2, and then mounting the inner frame 2 on the fixing seat 3, so that the three components are assembled into one. By means of the plug-in fixation between the fixing seat 3 and the inner frame 2, the stability of the inner frame 2 during injection molding is guaranteed, and the stability of the light guide seat 1 can also be met, so that the whole can be suitable for the one-time injection molding of the ear hook part.

[0022] During the specific fixed installation, first place the light guide seat 1 in the placement groove 23, and ensure that the top of the light guide column 11 is completely exposed. Then, the docking port 21 of the inner frame 2 can be docked with the docking end 32 of the fixed seat 3, so that the docking port 21 is mounted on the cantilever 31, and the pins 22 are inserted into the corresponding slots 33 one by one to keep the inner frame 2 and the cantilever 31 stable. Then, the cantilever 31 can be extended into the injection molding cavity to complete the subsequent injection molding work.

[0023] Furthermore, in order to improve the stability between the pin 22 and the slot 33, a pressing protrusion 34 is provided at the upper edge of the notch of the slot 33 of this embodiment. The end of the pressing protrusion 34 is tilted downward. In this way, when the pin 22 is inserted, the pressing protrusion 34 will press the pin 22 to deform slightly, so that the pin 22 and the slot 33 are tightened, thereby achieving the effect of improving the stability between the pin 22 and the slot 33.

[0024] Furthermore, in order to facilitate the insertion between the pins 22 and the slots 33 , the corners of the pressing protrusions 34 in this embodiment are all chamfered surfaces.

[0025] Furthermore, although the light guide base 1 can ensure a certain degree of stability by relying on the top contact of the cantilever 31, in order to strengthen the stability of the light guide base 1 and prevent it from deflecting, the light guide base 1 of this embodiment is provided with at least two outwardly protruding positioning grooves 12 on one end face facing the docking end, and the docking end 32 is provided with a matching hole 35, and a positioning column 36 with a shape corresponding to the positioning groove 12 is provided in the matching hole 35. Specifically, the groove edge of the positioning groove 12 is embedded in the matching hole 35, and the positioning column 36 in the matching hole 35 is inserted into the positioning groove 12, thereby forming a limiting and matching fastening function.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An injection-molded fixing mechanism for an earphone ear hook, characterized in that: The light guide base comprises a light guide seat, an inner frame and a fixed seat, wherein one end face of the inner frame is provided with a docking port, the inner wall of the docking port is provided with at least two pair of pins, the top ends of the pair of pins extend to the outside of the docking port, the inner wall of the docking port is provided with a placement groove that can accommodate the light guide seat, the light guide seat is provided with a light guide column, the light guide seat is placed in the placement groove, the top end of the light guide column passes through the inner frame and is placed outside, one end of the fixed seat is used to be installed on the mold, the other end of the fixed seat is provided with a cantilever, the end of the cantilever is provided with a docking end head, the shape of the docking end head corresponds to the shape of the docking port, and the docking end head is provided with a docking slot that meets the insertion requirements of the pair of pins; wherein, after the docking end head is inserted into the docking port, the top end of the docking end head presses against the light guide seat.

2. The ear hook injection molding fixing mechanism of an earphone according to claim 1, characterized in that: A pressing protrusion is provided at the upper edge of the notch of the pair of slots, and the end of the pressing protrusion is inclined downward.

3. The ear hook injection molding fixing mechanism of an earphone according to claim 2, characterized in that: The corners of the top pressing protrusion are all chamfered surfaces.

4. The ear hook injection molding fixing mechanism for an earphone according to claim 1, characterized in that: The light guide seat is provided with at least two outwardly protruding positioning grooves on one end surface facing the docking end head. The docking end head is provided with a mounting hole. A positioning column having a shape corresponding to the positioning groove is provided in the mounting hole.

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