Elastic needle structure and earphone charging bin

Abstract

The utility model discloses a needle structure, including cap body, spring and fixed connecting portion, the lower extreme of fixed connecting portion is fixed on the circuit board and is connected with the circuit board electric connection, the inside of cap body has the accommodation cavity of downward opening, the upper portion of fixed connecting portion is nested in the accommodation cavity, the spring is arranged in the accommodation cavity, the lower extreme of spring is fixedly connected with the upper extreme of fixed connecting portion, the upper extreme of spring is fixedly connected with the inner wall of cap body, cap body passes through spring and can reciprocate up and down relative to fixed connecting portion. The structure can because the opening of cap body is downward, when the earphone carries out daily storage, the sweat and grease that remain on the earphone in the process of cap body reciprocation up and down do not enter the accommodation cavity, do not produce corrosion to spring and affect the elasticity and electric property of spring, have better anticorrosive property and security.

Description

Technical Field

[0001] This utility model relates to the field of headphone charging case technology. Background Technology

[0002] Existing headphone charging cases generally include an upper cover and a lower shell, which are detachably connected together to form a receiving cavity. Inside the receiving cavity, there is a PCB board and a headphone storage and charging assembly. The PCB board is electrically connected to the charging interface and the headphone storage and charging assembly. The charging interface is used to charge the charging case, and the headphone storage and charging assembly is used to store and charge the Bluetooth headphones. The headphone storage and charging assembly has spring pins corresponding to the headphone charging positions, and the spring pins are electrically connected to the PCB board.

[0003] The existing spring pins are attached. Figure 1 The device includes a needle A, a spring 2, and a fixing connection part 3. The lower end of the fixing connection part 3 is fixed to and electrically connected to the PCB circuit board. The fixing connection part 3 has an upward-opening receiving cavity. The lower end of the needle A is movably sleeved in the receiving cavity. The spring 2 is located between the lower end of the needle A and the lower inner wall of the receiving cavity. The upper end of the needle A extends upward from the upper opening of the receiving cavity. The needle A can move up and down in the receiving cavity through the spring 2.

[0004] The problem with existing spring tips is that, because the opening of the housing cavity faces upwards, when the earphone is stored, the sweat and oil left on the earphone can easily enter the housing cavity through the gap between the opening of the housing cavity and the needle A during the reciprocating motion of the needle A. This can corrode the spring, affect the elasticity and electrical properties of the spring, and in severe cases, cause the spring tip charging function to fail. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a spring-loaded pin structure and an earphone charging case.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A spring-loaded structure, fixedly connected to a circuit board, is characterized by comprising a cap body, a spring, and a fixing connection part. The lower end of the fixing connection part is fixed to the circuit board and electrically connected to the circuit board. The cap body has a downward-opening receiving cavity inside. The upper part of the fixing connection part is nested in the receiving cavity. The spring is disposed in the receiving cavity. The lower end of the spring is fixedly connected to the upper end of the fixing connection part, and the upper end of the spring is fixedly connected to the inner wall of the cap body. The cap body can reciprocate up and down relative to the fixing connection part through the spring.

[0008] Preferably, the receiving cavity includes a first receiving cavity and a second receiving cavity that are interconnected. The first receiving cavity is located at the upper part of the cap body, the upper end of the spring is fixedly disposed in the first receiving cavity, the second receiving cavity is located at the lower part of the receiving cavity, and the upper part of the fixed connecting part is nested in the second receiving cavity.

[0009] Preferably, the upper end of the spring is nested and fixed on the inner wall of the first accommodating cavity.

[0010] Preferably, the upper end of the fixed connection part has a groove, and the lower end of the spring is nested and fixed on the inner wall of the groove.

[0011] Preferably, the middle part of the fixed connection portion also has a convex ring plate, which is used to limit the downward movement of the cap body.

[0012] Preferably, the lower surface of the convex ring plate is in close contact with the upper surface of the circuit board.

[0013] Preferably, the lower end of the fixed connection portion extends downward from the convex ring plate and is electrically connected to the circuit board.

[0014] This utility model also provides an earphone charging case, including an upper cover, a lower shell, and a circuit board. The upper cover and the lower shell are combined to form a shell with an earphone receiving cavity. The circuit board is disposed in the lower shell, and an upwardly extending spring pin is disposed on the circuit board. The spring pin is located in the earphone receiving cavity for electrical connection with the earphone. The structure of the spring pin is the aforementioned spring pin structure.

[0015] The beneficial effects of this utility model are as follows: This utility model designs the spring-loaded structure to include a cap, a spring, and a fixed connecting part. The lower end of the fixed connecting part is fixed to the circuit board and electrically connected to it. The cap has a downward-opening receiving cavity inside, and the upper part of the fixed connecting part is nested within this cavity. The spring is disposed within the receiving cavity, with its lower end fixedly connected to the upper end of the fixed connecting part and its upper end fixedly connected to the inner wall of the cap. The cap can reciprocate up and down relative to the fixed connecting part via the spring. Because the cap's opening faces downwards, sweat and oil accumulated on the earphones during daily storage will not enter the receiving cavity during the reciprocating motion of the cap, thus preventing corrosion of the spring and affecting its elasticity and electrical properties, resulting in better corrosion resistance and safety. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a cross-sectional view of a spring pin in the prior art;

[0018] Figure 2 This is a structural diagram of the spring pin structure in the embodiment;

[0019] Figure 3 This is a cross-sectional view of the spring pin structure in the embodiment;

[0020] Figure 4 Exploded view of the earphone charging case;

[0021] Figure 5 This is a diagram showing the assembly structure of the spring pin and the circuit board;

[0022] In the diagram: A, needle; 1, cap; 51, first receiving cavity; 52, second receiving cavity; 2, spring; 3, fixed connection part; 31, groove; 32, convex ring plate; 4, circuit board; 6, upper cover; 7, lower shell; 8, earphone receiving cavity; 9, spring pin. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] A spring-loaded pin structure, the structural diagram of which is attached. Figure 2 See attached diagram for its cross-sectional view. Figure 3 The device includes a cap body 1, a spring 2, and a fixing connection part 3. The lower end of the fixing connection part 3 is fixed to and electrically connected to a circuit board 4. The cap body 1 has a downward-opening receiving cavity. The upper part of the fixing connection part 3 is nested within the receiving cavity. The spring 2 is disposed within the receiving cavity, with its lower end fixedly connected to the upper end of the fixing connection part 3 and its upper end fixedly connected to the inner wall of the cap body 1. The cap body 1 can reciprocate up and down relative to the fixing connection part 3 via the spring 2. Specifically, the receiving cavity includes a first receiving cavity 51 and a second receiving cavity 52 that are interconnected. The first receiving cavity 51 is located at the upper part of the cap body 1, and the upper end of the spring 2 is fixedly disposed on the inner wall of the first receiving cavity 51. The second receiving cavity 52 is located at the lower part of the receiving cavity, and the upper part of the fixing connection part 3 is nested within the second receiving cavity 52. ​​The upper end of the fixing connection part 3 has a groove 31, and the lower end of the spring 2 is nested and fixed on the inner wall of the groove 31. The fixed connection part 3 also has a convex ring plate 32 in the middle. The convex ring plate 32 is used to limit the downward movement of the cap body 1. The lower surface of the convex ring plate 32 is in close contact with the upper surface of the circuit board 4. The lower end of the fixed connection part 3 extends downward from the convex ring plate 32 and is electrically connected to the circuit board 4.

[0025] This embodiment also provides an earphone charging case, the exploded structural diagram of which is shown in the attached figure. Figure 4 The device includes an upper cover 6, a lower shell 7, and a circuit board 4. The upper cover 6 and the lower shell 7 are combined to form a housing with an earphone receiving cavity 8. The circuit board 4 is disposed inside the lower shell 7, and an upwardly extending spring pin 9 is provided on the circuit board 4. The spring pin 9 is located inside the earphone receiving cavity 8 for electrical connection with the earphone. The spring pin adopts the aforementioned spring pin structure. For the assembly structure diagram of the spring pin and the circuit board, please refer to the attached diagram. Figure 5 .

[0026] It is understood that the circuit board in this embodiment is usually a PCB circuit board, the earphone is usually a Bluetooth earphone, and the earphone charging case is usually a Bluetooth earphone charging case, all of which are common embodiments of this utility model.

[0027] The beneficial effects of this utility model are as follows: This utility model designs the spring-loaded structure to include a cap, a spring, and a fixed connecting part. The lower end of the fixed connecting part is fixed to the circuit board and electrically connected to it. The cap has a downward-opening receiving cavity inside, and the upper part of the fixed connecting part is nested within this cavity. The spring is disposed within the receiving cavity, with its lower end fixedly connected to the upper end of the fixed connecting part and its upper end fixedly connected to the inner wall of the cap. The cap can reciprocate up and down relative to the fixed connecting part via the spring. Because the cap's opening faces downwards, sweat and oil accumulated on the earphones during daily storage will not enter the receiving cavity during the reciprocating motion of the cap, thus preventing corrosion of the spring and affecting its elasticity and electrical properties, resulting in better corrosion resistance and safety.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A spring-loaded pin structure, fixedly connected to a circuit board, characterized in that: The device includes a cap body, a spring, and a fixing connection. The lower end of the fixing connection is fixed to the circuit board and electrically connected to the circuit board. The cap body has a downward-opening receiving cavity. The upper part of the fixing connection is nested in the receiving cavity. The spring is disposed in the receiving cavity. The lower end of the spring is fixedly connected to the upper end of the fixing connection, and the upper end of the spring is fixedly connected to the inner wall of the cap body. The cap body can reciprocate up and down relative to the fixing connection through the spring.

2. The spring pin structure according to claim 1, characterized in that: The accommodating cavity includes a first accommodating cavity and a second accommodating cavity that are interconnected. The first accommodating cavity is located at the upper part of the cap body, and the upper end of the spring is fixedly disposed in the first accommodating cavity. The second accommodating cavity is located at the lower part of the accommodating cavity, and the upper part of the fixed connecting part is nested in the second accommodating cavity.

3. The spring pin structure according to claim 2, characterized in that: The upper end of the spring is nested and fixed on the inner wall of the first accommodating cavity.

4. The spring pin structure according to claim 1, characterized in that: The upper end of the fixed connection part has a groove, and the lower end of the spring is nested and fixed on the inner wall of the groove.

5. The spring pin structure according to any one of claims 1 to 4, characterized in that: The fixed connection part also has a convex ring plate in the middle, which is used to limit the downward movement of the cap body.

6. The spring pin structure according to claim 5, characterized in that: The lower surface of the convex ring plate is in close contact with the upper surface of the circuit board.

7. The spring pin structure according to claim 5, characterized in that: The lower end of the fixed connection portion extends downward from the convex ring plate and is electrically connected to the circuit board.

8. An earphone charging case, comprising an upper cover, a lower shell, and a circuit board, wherein the upper cover and the lower shell are combined to form a housing having an earphone receiving cavity, the circuit board is disposed within the lower shell, and an upwardly extending spring pin is disposed on the circuit board, the spring pin being located within the earphone receiving cavity for electrically connecting with an earphone, characterized in that, The structure of the spring needle is the spring needle structure as described in any one of claims 1 to 7.

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