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CN-224205226-U - Earphone charging electrode structure

CN224205226UCN 224205226 UCN224205226 UCN 224205226UCN-224205226-U

Abstract

The utility model discloses a charging electrode structure of an earphone, which comprises a charging electrode arranged at the lower end of a shell, wherein the charging electrode is electrically connected with a circuit board arranged in the shell, the lower end of the shell is provided with a counter bore, a terminal is welded and fixed at the lower end of the circuit board, elastic contact arms of the terminal are exposed at two sides of the counter bore, the cross section of the charging electrode is in a convex shape matched with the counter bore, the charging electrode penetrates through the counter bore and is fastened through interference fit, and the end part of the charging electrode also pushes against the elastic contact arms to form elastic contact with the elastic contact arms, so that the charging electrode is electrically conducted with the circuit board. The charging electrode is inserted into the counter bore at the lower end of the shell and is fastened by interference fit, the contact area between the charging electrode and the counter bore is large, the assembly structure is extremely stable, and the gap between the charging electrode and the counter bore is extremely small or gapless, so that the charging electrode has a good waterproof effect, and the charging electrode is simple in assembly structure and easy to operate. In addition, the circuit board forms elastic contact with the charging electrode through the terminal welded and fixed by the circuit board, and the conducting connection is stable.

Inventors

  • JIANG CONGYOU

Assignees

  • 东莞市和乐电子有限公司

Dates

Publication Date
20260505
Application Date
20250428

Claims (10)

  1. 1. The earphone charging electrode structure comprises a charging electrode (3) arranged at the lower end of a shell (1), the charging electrode (3) is electrically connected with a circuit board (2) arranged in the shell (1), The circuit board is characterized in that a counter bore (11) is formed in the lower end of the shell (1), a terminal (4) is fixedly welded at the lower end of the circuit board (2), elastic contact arms (41) of the terminal (4) are exposed on two sides of the counter bore (11), the cross section of the charging electrode (3) is in a convex shape matched with the counter bore (11), the charging electrode (3) is arranged in the counter bore (11) in a penetrating mode and is fastened through interference fit, and the end portion of the charging electrode (3) also pushes against the elastic contact arms (41) to form elastic contact with the elastic contact arms (41), so that the charging electrode (3) and the circuit board (2) are electrically conducted.
  2. 2. The earphone charging electrode structure of claim 1, wherein the counter bore (11) is obliquely arranged at a corner of the lower end of the housing (1), the corner of the lower end of the housing (1) is provided with a first arc-shaped convex surface (12), the charging electrode (3) is obliquely assembled corresponding to the housing (1), a guide joint surface (30) at the lower end of the charging electrode (3) is an arc-shaped convex surface, and the outer edge of the guide joint surface (30) is smoothly connected with the first arc-shaped convex surface (12).
  3. 3. The earphone charging electrode structure of claim 1, wherein the inner wall of the counter bore (11) is further provided with a limiting convex part (113) for foolproof and limiting, the charging electrode (3) is further provided with a limiting groove (311) matched with the limiting convex part (113), and the limiting groove (311) is inlaid and fixed with the limiting convex part (113).
  4. 4. The earphone charging electrode structure according to claim 3, wherein the counter bore (11) comprises a limiting groove body (111) and a limiting hole (112) which is communicated with the limiting groove body (111) and has an inner diameter smaller than that of the limiting groove body (111), the cross section of the limiting groove body (111) is circular, the cross section of the limiting hole (112) is D-shaped, the charging electrode (3) comprises an electrode main body (31) and a conductive column (32) which is integrally formed on the electrode main body (31) and has a size smaller than that of the electrode main body (31), the cross section of the electrode main body (31) is circular, the cross section of the conductive column (32) is D-shaped, the conductive column (32) penetrates through the limiting hole (112), the electrode main body (31) is embedded and fixed in the limiting groove body (111), the limiting protruding portion (113) is arranged in the limiting groove body (111), and the limiting groove (311) is arranged on the outer wall of the electrode main body (31).
  5. 5. The earphone charging electrode structure according to claim 4, wherein the conductive post (32) is tapered in size with respect to the other end connected to the electrode main body (31).
  6. 6. The earphone charging electrode structure according to any one of claims 1 to 5, wherein the inner wall of the counterbore (11) is coated with a sealant, and the outer wall of the charging electrode (3) is in contact with the sealant to form a sealing assembly with the inner wall of the counterbore (11).
  7. 7. The earphone charging electrode structure according to any one of claims 1 to 5, wherein the elastic contact arm (41) is bent at its distal end to form an outwardly protruding contact surface (411), and the contact surface (411) is in contact with the charging electrode (3).
  8. 8. The earphone charging electrode structure according to any one of claims 1 to 5, wherein the terminal (4) comprises a main body (42), a connecting arm (43) integrally connected to the main body (42) and bent into an S-shape, and the elastic contact arm (41) extending along the end of the connecting arm (43) and formed by bending, the main body (42) has a soldering plane (421), and the soldering plane (421) is attached to a soldering pad of the circuit board (2) and fixed by soldering.
  9. 9. The earphone charging electrode structure according to claim 8, wherein the main body portion (42) has a semi-square frame shape, and the connecting arm (43) is integrally connected to a lower end of one side of the main body portion (42), and the welding plane (421) is provided on the other side of the main body portion (42).
  10. 10. The earphone charging electrode structure of claim 8, wherein a first blocking arm (44) is formed at the lower end of the middle part of the main body part (42) in a downward extending mode, a second blocking arm (45) extending downwards is formed at the side face of one side of the main body part (42) in a bending mode, a first blocking portion (441) and a second blocking portion (442) are respectively formed at the lower ends of the first blocking arm (44) and the first blocking arm (44) in a bending mode from outside to inside, the first blocking arm (44) and the first blocking arm (44) are distributed on two sides of the elastic contact arm (41), and the first blocking portion (441) and the second blocking portion (442) are abutted against the lower end face of the elastic contact arm (41) to prevent the elastic contact arm (41) from being excessively ejected downwards.

Description

Earphone charging electrode structure Technical field: the utility model relates to the technical field of earphone products, in particular to an earphone charging electrode structure. The background technology is as follows: Headphones are a type of conversion unit that is capable of receiving electrical signals from a media player or receiver and converting them into audible sound waves using a speaker proximate the ear. The Chinese patent application number 202222884953.1 discloses a novel noise reduction earphone, which comprises an earphone shell, wherein the earphone shell comprises an earplug part and a handle part, a control circuit board is arranged on the handle part, a battery, a loudspeaker and a feedback microphone are arranged in the earplug part, the battery, the loudspeaker and the feedback microphone are connected to the control circuit board, a charging electrode is arranged at the tail end of the control circuit board, and the feedback microphone is integrated on the loudspeaker. In other words, the charging electrodes in the noise reduction earphone are directly welded and fixed at the tail end of the control circuit board, and when the noise reduction earphone is assembled in the later period, the two charging electrodes at the tail end of the control circuit board are required to be aligned with the two hole positions at the bottom of the handle part, and the assembly cannot be realized if the two hole positions are slightly misplaced, and in addition, the assembly mode is easy to lead the gap between the charging electrodes and the hole positions to form so as to influence the waterproof effect. In view of this, the present inventors have proposed the following means. The utility model comprises the following steps: The utility model aims to overcome the defects of the prior art and provides a charging electrode structure of an earphone. In order to solve the technical problems, the technical scheme is that the earphone charging electrode structure comprises a charging electrode arranged at the lower end of a shell, the charging electrode is electrically connected with a circuit board arranged in the shell, a counter bore is formed in the lower end of the shell, terminals are welded and fixed at the lower end of the circuit board, elastic contact arms of the terminals are exposed at two sides of the counter bore, the cross section of the charging electrode is in a convex shape matched with the counter bore, the charging electrode penetrates through the counter bore and is fastened through interference fit, and the end part of the charging electrode also pushes against the elastic contact arms to form elastic contact with the elastic contact arms, so that the charging electrode and the circuit board are electrically conducted. Furthermore, in the above technical scheme, the counter bore is obliquely arranged at a corner of the lower end of the housing, the corner of the lower end of the housing is provided with a first arc-shaped convex surface, the charging electrode is assembled obliquely corresponding to the housing, the guide joint surface of the lower end of the charging electrode is an arc-shaped convex surface, and the outer edge of the guide joint surface is smoothly connected with the first arc-shaped convex surface. Furthermore, in the above technical scheme, the counter bore inner wall is further provided with a limiting convex part for foolproof and limiting, and the charging electrode is further provided with a limiting groove adapted to the limiting convex part, and the limiting groove is inlaid and fixed with the limiting convex part. In the technical scheme, the counter bore comprises a limiting groove body and a limiting hole, wherein the limiting groove body is communicated with the limiting groove body, the inner diameter of the limiting hole is smaller than that of the limiting groove body, the cross section of the limiting groove body is circular, the limiting part Kong Hengjie is in a D shape, the charging electrode comprises an electrode main body and a conductive column which is integrally formed on the electrode main body and is smaller than that of the electrode main body, the cross section of the electrode main body is circular, the cross section of the conductive column is in the D shape, the conductive column penetrates through the limiting hole, the electrode main body is inlaid and fixed in the limiting groove body, the limiting protruding part is arranged in the limiting groove body, and the limiting groove is formed in the outer wall of the electrode main body. In the above technical solution, the conductive post is smaller than the electrode body at the other end. Furthermore, in the above technical scheme, the inner wall of the counter bore is coated with sealant, and the outer wall of the charging electrode is in contact with the sealant so as to form sealing assembly with the inner wall of the counter bore. Further, in the above technical solution,