Earphone battery assembly structure

Abstract

The earphone battery assembly structure comprises a battery and an injection molding piece arranged outside the battery, the injection molding piece comprises a negative electrode cover arranged at the negative electrode end of the battery, a positive electrode cover arranged at the positive electrode end of the battery and a connecting part covering a connecting piece, and the connecting piece is attached to the outer wall of the battery to extend. The connecting part is attached to the side, away from the battery, of the connecting piece, the negative electrode cover, the positive electrode cover and the connecting part are integrally arranged, the negative electrode cover surrounds the negative electrode end, a through hole for a contact of the circuit board to stretch into to be connected with the negative electrode contact piece and the positive electrode contact piece is reserved in the positive electrode cover, the positive electrode cover surrounds the positive electrode end, and the circuit board covers the through hole. According to the utility model, the negative electrode cover, the positive electrode cover and the connecting part are integrally injection-molded to form the injection-molded part arranged at the periphery of the battery, and the connecting part is tightly attached to the connecting sheet, so that the overall structural stability is enhanced, the negative electrode cover and the positive electrode cover cannot be far away from each other, and the connecting part can assist in limiting the negative electrode cover and the positive electrode cover while isolating the connecting sheet.

Description

Technical Field

[0001] This utility model relates to the field of headphone batteries, and in particular to a headphone battery assembly structure. Background Technology

[0002] In the design of modern electronic devices, the demand for both compactness and functional integration is increasing. For battery bars, extending the negative terminal contact from the negative terminal to the positive terminal via a metal connecting piece connected to the negative terminal allows for outputting both positive and negative terminals at the same end of the battery. This significantly saves internal space, enabling products to accommodate more critical components while maintaining a compact form factor, thus improving overall performance.

[0003] Battery sticks typically have an external circuit board at the positive terminal and an insulating battery cover at the negative terminal. The circuit board is located at the positive terminal and covers the positive terminal to serve as the battery cover. The circuit board and the positive terminal of the battery are fixed to each other by solder points. The circuit board needs to protect the positive terminal of the battery while transmitting electrical signals, resulting in poor stability. When the battery is installed in the earphone, it is easy to scratch the circuit board, causing the circuit board to fall off the battery end. In addition, there is no extra fixing structure between the battery cover at the negative terminal and the metal negative terminal of the battery, and the battery cover is also easy to fall off. Summary of the Invention

[0004] This utility model provides an earphone battery assembly structure that can reinforce the battery cover and circuit board at the end of the battery, making the battery cover and circuit board less likely to fall off.

[0005] This utility model provides a technical solution that adopts the following approach:

[0006] An earphone battery assembly structure includes a battery and an injection-molded part disposed outside the battery. The injection-molded part includes a negative electrode cover disposed at the negative terminal of the battery, a positive electrode cover disposed at the positive terminal of the battery, and a connecting portion covering a connecting piece. The connecting piece extends along the outer wall of the battery, and the connecting portion is attached to the side of the connecting piece away from the battery. The negative electrode cover, the positive electrode cover, and the connecting portion are integrally disposed. The negative electrode cover surrounds the negative terminal, and the positive electrode cover has a through hole for contacts of a circuit board to extend into to connect the negative electrode contact and the positive electrode contact. The positive electrode cover surrounds the positive terminal, and the circuit board covers the through hole.

[0007] The negative electrode cover, positive electrode cover, and connecting part are integrally injection molded into an injection molded part located on the outer periphery of the battery. By injection molding the negative electrode cover, positive electrode cover, and connecting part on the outer periphery of the battery, the two ends of the battery are respectively covered with the negative electrode cover and the positive electrode cover. The connecting part fits tightly with the connecting piece, enhancing the overall structural stability and preventing the negative electrode cover and the positive electrode cover from moving away from each other. While isolating the connecting piece, the connecting part can also help restrict the negative electrode cover and the positive electrode cover. During the installation of the circuit board, the through holes not only avoid contact between the circuit board and the battery, but also ensure the accuracy of the contact connection, thereby positioning the circuit board and effectively avoiding the problem of the circuit board not aligning with the negative electrode contact piece due to the later installation of the circuit board. At the same time, it also avoids the situation where the circuit board is damaged due to the later installation of the battery cover.

[0008] Preferably, the battery includes a cell and an outer metal film, with a gap between the cell and the outer metal film. The negative electrode cover and the positive electrode cover extend into the gap to form an insertion part, and the outer periphery of the negative electrode cover and the outer periphery of the positive electrode cover are flush with the outer periphery of the outer metal film.

[0009] A gap is created between the battery cell and the outer metal film, allowing some of the molding compound to flow into the gap during injection molding to form an insertion part. This reinforces the connection between the negative and positive electrode caps. The insertion part is embedded in the gap, further preventing the caps from falling off and improving the overall structural stability. This ensures that the negative and positive electrode caps fit tightly against the outer metal film, preventing loosening due to external impacts. Furthermore, it allows for a deeper insertion depth of the negative and positive electrode caps at both ends of the battery. Combined with the design of the connection part, this makes it less likely for the negative and positive electrode caps to misalign or separate relative to the battery.

[0010] Preferably, the positive electrode cover forms a negative electrode contact hole and a positive electrode contact hole around the negative electrode contact and the positive electrode contact, respectively. The negative electrode contact hole and the positive electrode contact hole are respectively connected to two through holes. The distance from the negative electrode contact to the positive electrode of the battery cell is greater than the distance from the positive electrode contact to the positive electrode of the battery cell. The depth of the negative electrode contact hole is adapted to the fact that the depth of the negative electrode contact hole is greater than the depth of the positive electrode contact hole.

[0011] The differentiated design of the negative and positive contacts makes it easy to distinguish and install the negative and positive contacts, avoiding short circuits caused by incorrect installation. At the same time, it ensures the stability of the contact connection and the efficiency of current transmission, thus extending the battery life.

[0012] Preferably, a reinforcing post is provided on the side of the circuit board near the positive electrode cover, and the reinforcing post is inserted into the positive electrode cover.

[0013] The reinforcing column can increase the connection area between the circuit board and the positive electrode cover, enhance structural stability, prevent the circuit board from shifting due to vibration or external force, make the connection between the circuit board and the positive electrode cover more secure, and further ensure that the circuit board is fixed in position inside the battery.

[0014] Preferably, the circuit board has positioning holes, which are set to correspond to the positioning protrusions at the battery installation location inside the earphone or earphone holder. The positive electrode cover has a positioning groove recessed on its side wall, and the positioning holes are directly opposite to and connected to the positioning grooves.

[0015] In summary, this utility model has the following beneficial technical effects:

[0016] The negative electrode cover, positive electrode cover, and connecting part are integrally injection molded into an injection molded part located on the outer periphery of the battery. By injection molding the negative electrode cover, positive electrode cover, and connecting part on the outer periphery of the battery, the two ends of the battery are respectively covered with the negative electrode cover and the positive electrode cover. The connecting part fits tightly with the connecting piece, enhancing the overall structural stability and preventing the negative electrode cover and the positive electrode cover from moving away from each other. While isolating the connecting piece, the connecting part can also help restrict the negative electrode cover and the positive electrode cover. During the installation of the circuit board, the through holes not only avoid contact between the circuit board and the battery, but also ensure the accuracy of the contact connection, thereby positioning the circuit board and effectively avoiding the problem of the circuit board not aligning with the negative electrode contact piece due to the later installation of the circuit board. At the same time, it also avoids the situation where the circuit board is damaged due to the later installation of the battery cover. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an earphone battery assembly structure according to this utility model.

[0018] Figure 2 This is a cross-sectional view of an earphone battery assembly structure.

[0019] Figure 3 This is an exploded view from the first perspective of an earphone battery assembly structure according to this utility model.

[0020] Figure 4 This is an exploded view from a second perspective of an earphone battery assembly structure according to this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Negative electrode cover; 2. Positive electrode cover; 3. Connecting part; 4. Electrode tab; 5. Through hole; 6. Negative electrode contact; 7. Positive electrode contact; 8. Battery cell; 9. Outer metal film; 10. Insertion part; 11. Circuit board; 12. Negative electrode contact hole; 13. Positive electrode contact hole; 14. Reinforcing post; 15. Positioning hole; 16. Positioning groove. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-2 The present invention will be described in further detail below.

[0023] This utility model discloses an earphone battery assembly structure.

[0024] Reference Figure 1 as well as Figure 2An earphone battery assembly structure includes a battery and an injection-molded part disposed outside the battery. The injection-molded part includes a negative electrode cover 1 disposed at the negative terminal of the battery, a positive electrode cover 2 disposed at the positive terminal of the battery, and a connecting portion 3 covering a connecting piece 4. The connecting piece 4 extends along the outer wall of the battery, and the connecting portion 3 is attached to the side of the connecting piece 4 away from the battery. The negative electrode cover 1, the positive electrode cover 2 and the connecting portion 3 are integrally disposed. The negative electrode cover 1 surrounds the negative terminal. The positive electrode cover 2 has a through hole 5 for the contacts of a circuit board 11 to extend into in order to connect the negative electrode contact 6 and the positive electrode contact 7. The positive electrode cover 2 surrounds the positive terminal, and the circuit board 11 covers the through hole 5.

[0025] The negative electrode cover 1, the positive electrode cover 2, and the connecting part 3 are integrally injection molded into an injection molded part on the outer periphery of the battery. By injection molding the negative electrode cover 1, the positive electrode cover 2, and the connecting part 3 on the outer periphery of the battery, the two ends of the battery are respectively covered with the negative electrode cover 1 and the positive electrode cover 2. The connecting part 3 fits tightly with the connecting piece 4, enhancing the overall structural stability and preventing the negative electrode cover 1 and the positive electrode cover 2 from moving away from each other. While isolating the connecting piece 4, the connecting part 3 can also help restrict the negative electrode cover 1 and the positive electrode cover 2. When the circuit board 11 is installed, the through hole 5 avoids contact between the circuit board 11 and the battery on the one hand, and ensures the accuracy of the contact connection on the other hand, thereby positioning the position of the circuit board 11. This effectively avoids the problem that the circuit board 11 cannot be aligned with the negative electrode contact piece 6 and the positive electrode contact piece 7 due to the later installation of the battery cover, and also avoids the situation that the circuit board 11 is damaged due to the later installation of the battery cover.

[0026] The connecting part 3 is a plate covering the outside of the connecting piece 4. The width of the connecting part 3 can be set to be smaller than the width of the connecting piece 4, so that the two sides of the connecting piece 4 are exposed outside the connecting part 3. The connecting piece 4 is separated from the outside world only from the thickness direction of the connecting piece 4, which can achieve the effect of isolating the connecting piece 4 from the outside world that may be conductive. This shape setting is conducive to the convenience of processing the connecting part 3.

[0027] Reference Figure 1 as well as Figure 2 In this embodiment, the battery includes a cell 8 and an outer metal film 9. A gap is left between the cell 8 and the outer metal film 9. The negative electrode cover 1 and the positive electrode cover 2 extend into the gap to form an insertion part 10. The outer periphery of the negative electrode cover 1 and the outer periphery of the positive electrode cover 2 are flush with the outer periphery of the outer metal film 9.

[0028] When there is a gap between the battery cell 8 and the outer metal film 9, the injection molding material flows into the gap between them, thereby stabilizing the battery cell and fixing it relatively to the outer metal film, which helps to maintain the stability of the battery.

[0029] In other embodiments, the diameter of the battery cell is equal to or close to the inner diameter of the outer metal film, and the battery cell and the outer metal film are bonded together to form a whole battery cell with no gap between them, and therefore no plug-in part.

[0030] Reference Figure 1 as well as Figure 2 In this embodiment, the positive electrode cover 2 forms a negative electrode contact hole 12 and a positive electrode contact hole 13 around the negative electrode contact 6 and the positive electrode contact 7, respectively. The negative electrode contact hole 12 and the positive electrode contact hole 13 are respectively connected to two through holes 5. The distance from the negative electrode contact 6 to the positive electrode of the battery cell is greater than the distance from the positive electrode contact 7 to the positive electrode of the battery cell. The depth of the negative electrode contact hole 12 is adapted to be greater than the depth of the positive electrode contact hole 13.

[0031] The differentiated design of the negative contact hole 12 and the positive contact hole 13 makes it easy to distinguish and install the negative contact piece 6 and the positive contact piece 7, avoiding short circuit problems caused by misinstallation, while ensuring the stability of the contact connection and the efficiency of current transmission, and extending the battery life.

[0032] Reference Figure 2 as well as Figure 3-4 In this embodiment, a reinforcing post 14 is provided on the side of the circuit board 11 near the positive electrode cover 2, and the reinforcing post 14 is inserted into the positive electrode cover 2.

[0033] The reinforcing column 14 can increase the connection area between the circuit board 11 and the positive electrode cover 2, enhance structural stability, prevent the circuit board 11 from shifting due to vibration or external force, make the connection between the circuit board 11 and the positive electrode cover 2 more secure, and further ensure that the circuit board 11 is fixed in position inside the battery.

[0034] Reference Figure 1 as well as Figure 2 In this embodiment, the circuit board 11 is provided with a positioning hole 15, which corresponds to the positioning protrusion at the battery installation location inside the earphone or earphone holder. The positive electrode cover has a positioning groove 16 recessed on its side wall, and the positioning hole 15 and the positioning groove 16 are directly opposite and connected.

[0035] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A headphone battery assembly structure, characterized in that: The device includes a battery and an injection-molded component disposed outside the battery. The injection-molded component includes a negative electrode cap disposed at the negative terminal of the battery, a positive electrode cap disposed at the positive terminal of the battery, and a connecting portion covering a connecting piece. The connecting piece extends along the outer wall of the battery, and the connecting portion is attached to the side of the connecting piece away from the battery. The negative electrode cap, the positive electrode cap, and the connecting portion are integrally formed. The negative electrode cap surrounds the negative terminal, and the positive electrode cap has a through hole for contacts of a circuit board to extend into to connect the negative electrode contact and the positive electrode contact. The positive electrode cap surrounds the positive terminal, and the circuit board covers the through hole.

2. The headphone battery assembly structure according to claim 1, characterized in that: The battery includes a cell and an outer metal film, with a gap between the cell and the outer metal film. The negative electrode cap and the positive electrode cap extend into the gap to form an insertion part. The outer periphery of the negative electrode cap and the outer periphery of the positive electrode cap are flush with the outer periphery of the outer metal film.

3. The headphone battery assembly structure according to claim 2, characterized in that: The positive electrode cover forms a negative electrode contact hole and a positive electrode contact hole around the negative electrode contact and the positive electrode contact, respectively. The negative electrode contact hole and the positive electrode contact hole are connected to two through holes. The distance from the negative electrode contact to the positive electrode of the battery cell is greater than the distance from the positive electrode contact to the positive electrode of the battery cell. The depth of the negative electrode contact hole is adapted to the fact that the depth of the negative electrode contact hole is greater than that of the positive electrode contact hole.

4. The headphone battery assembly structure according to claim 3, characterized in that: A reinforcing post is provided on the side of the circuit board near the positive electrode cover, and the reinforcing post is inserted into the positive electrode cover.

5. The headphone battery assembly structure according to claim 4, characterized in that: The circuit board is provided with positioning holes, which are set with positioning protrusions corresponding to the battery installation position inside the earphone or earphone holder. The positive electrode cover has a positioning groove recessed on its side wall, and the positioning holes are directly opposite and connected to the positioning groove.

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