Audio jack

Abstract

The utility model relates to the field of audio connectors, and discloses an audio jack, which comprises a base, the base is provided with a jack, and a static pin and a moving pin which are arranged on the base along two sides of the jack in a penetrating manner, the moving pin comprises a pin and a contact end which are arranged in the base in a penetrating manner, the pin is provided with a clamping part, and the contact end is provided with a clamping groove. The clamping part comprises a connecting part and an elastic piece, the connecting part and the pin are integrally arranged, the elastic piece extends in the lateral direction of the connecting part, the length of the cross section of the connecting part is smaller than that of the cross section of the elastic piece, and the acting force needed by elastic deformation of the clamping part is reduced due to the fact that the length of the cross section of the connecting part is smaller than that of the cross section of the elastic piece; in this way, more labor is saved when the pins are connected with the base in a penetrating mode, meanwhile, base damage caused by the elasticity of the clamping parts in the assembling process can be reduced, and the quality and production efficiency of the audio jack can be improved.

Description

Technical Field

[0001] The utility model relates to the field of audio connectors, in particular to an audio jack. Background Art

[0002] The audio jack is an industry-standard connector. In addition to providing basic audio connections, this simple but versatile port can also be used to connect a variety of accessories to control other functions of the device. 2.5mm or 3.5mm audio jacks are very common in electronic devices such as computers, smartphones, media players, and high-fidelity speakers. During the use of these electronic devices, audio jacks are also used very frequently, and there are increasingly higher requirements for the quality of audio jacks. In the fiercely competitive market environment, the structure of audio jacks needs to be continuously optimized to meet the social development needs for audio jack quality and production efficiency. Utility Model Content

[0003] The utility model aims to provide an audio jack with a reasonable structure and easy assembly, thereby improving the production efficiency and quality of the audio jack.

[0004] In order to solve the above technical problems, the implementation method of the utility model provides a technical solution as follows:

[0005] An audio jack includes a base, the base is provided with a jack, and a static pin and a moving pin penetrating the base along both sides of the jack, the moving pin includes a pin penetrating in the base and a contact end, the pin is provided with a clamping portion, the clamping portion includes a connecting portion integrally arranged with the pin and a spring extending laterally along the connecting portion, and the cross-sectional length of the connecting portion is less than the cross-sectional length of the spring.

[0006] Furthermore, the base and the movable needle are plugged together to form a second through hole, and a guide surface is provided at a position corresponding to the second through hole and the clamping portion.

[0007] Furthermore, the second through hole is provided with a limiting wall, and the clamping portion can pass through the second through hole so that the spring sheet is clamped with the edge of the limiting wall.

[0008] Furthermore, a soldering foot is provided at one end of the pin away from the contact end, and a longitudinal cross section of the soldering foot is conical.

[0009] Furthermore, the angle between the two oblique sides of the longitudinal cross section of the weld foot is α, 20°≤α≤90°.

[0010] Furthermore, the free end of the soldering foot is inserted into the circuit board and fixed to the circuit board by soldering.

[0011] Furthermore, a clearance groove is provided at one end of the base close to the soldering pin, and the clearance groove is a groove arranged around the pin.

[0012] Furthermore, a bending portion is provided between the pin and the contact end, and the bending portion is arc-shaped.

[0013] Furthermore, the contact end is provided with a protruding contact point toward the socket, and the contact point can abut against an external device inserted into the socket.

[0014] Furthermore, the static needle and the dynamic needle are respectively connected to the base in the same insertion direction.

[0015] Compared with the prior art, the audio jack provided by the utility model has a simple structure. By setting the cross-sectional length of the middle connecting portion of the clamping portion to be smaller than the cross-sectional length of the spring sheet, the force required for the elastic deformation of the clamping portion is reduced, making it easier to connect the pins and the base through the insertion. At the same time, it can also reduce the damage to the base caused by the interaction between the elastic force of the clamping portion and the base during the assembly process, which is beneficial to improving the quality and production efficiency of the audio jack. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 This is an exploded view of the audio jack structure in one embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the stereoscopic structure of an audio jack in one embodiment of the utility model;

[0019] Figure 3 It is a structural schematic diagram of an audio jack in one embodiment of the utility model after the base is removed;

[0020] Figure 4 It is a schematic diagram of the stereoscopic structure of the moving pin of the audio jack in one embodiment of the utility model;

[0021] Figure 5 It is a left view of the moving pin of the audio jack in one embodiment of the utility model;

[0022] Figure 6 It is a front view of the moving pin of the audio jack in one embodiment of the utility model;

[0023] Figure 7 is a top view of an audio jack base in one embodiment of the utility model;

[0024] Figure 8 It is a front view of an audio jack base in one embodiment of the utility model;

[0025] Fig. 9 Yes Figure 8 Middle AA section view.

[0026] Explanation of the accompanying drawings: 1. base; 11. limiting wall; 12. first through hole; 13. second through hole; 131. guide surface; 14. give way groove; 2. static needle; 3. moving needle; 31. pin; 311. welding foot; 32. contact end; 321. contact point; 33. bending portion; 34. clamping portion; 341. connecting portion; 342. spring piece. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] like Figure 1-3 As shown. In one embodiment, the utility model provides an audio jack including a base 1 and a moving pin 3 and a static pin 2 plugged into the base 1, wherein the base 1 is provided with a plug hole, and the moving pin 3 and the static pin 2 are plugged into both sides of the plug hole. At least one static pin 2 is provided, and the base 1 and the static pin 2 are provided with a first through hole 12 correspondingly, and the static pin 2 is inserted into the first through hole 12; at least two moving pins 3 are provided, and the base 1 and the moving pin 3 are provided with a second through hole 13 correspondingly, and the moving pin 3 is inserted into the second through hole 13. In an exemplary example, the static pin 2 is set to one, and the moving pin 3 is set to four. One end of the moving pin 3 and the static pin 2 are respectively connected to the circuit board, and the other end of the moving pin 3 is abutted against the external device to transmit the audio signal. The four moving pins 3 are respectively used for the transmission of the left channel signal, the right channel signal, the microphone signal and the ground signal. The other end of the static pin 2 is connected to the end of one of the moving pins 3 for detecting signal transmission. Preferably, the moving pin 3 is made of conductive metal material, and the static pin 2 is made of conductive material. Of course, according to other functional requirements of the audio jack, the number and position of the moving pin 3 and the static pin 2 can be adaptively adjusted.

[0030] like Figure 4-6As shown, in one embodiment, the movable pin 3 includes a pin 31 inserted into the second through hole 13, and a contact end 32 extending substantially perpendicular to the pin 31. A bending portion 33 is further provided between the contact end 32 and the pin 31. The bending portion 33 is arc-shaped, and the two ends of the bending portion 33 are respectively fixedly connected to the pin 31 and the contact end 32. The setting of the bending portion 33 enhances the elastic deformation capacity between the contact end 32 and the pin 31, and can effectively enhance the durability of the contact end 32 for repeated elastic deformation and the stability of the resilience. A soldering foot 311 is provided at the free end of the pin 31. After the soldering foot 311 passes through the second through hole 13, the circuit board is soldered. Preferably, the soldering foot 311 is conical, and the angle between the two oblique sides of the longitudinal section of the soldering foot 311 is α, preferably, 20°≤α≤90°. The setting of the conical solder pin 311 is conducive to the insertion and positioning of the solder pin 311 and the circuit board, and improves the production efficiency of the audio jack; the contact end 32 is provided with a contact point 321 on the end surface of the side facing the jack, and the contact point 321 transmits signals by abutting against the surface of the external device inserted into the jack. When the external device is inserted into the jack, the contact point 321 is squeezed, driving the contact end 32 to elastically deform relative to the pin 31. The contact point 321 is tightly connected to the external device under the action of the rebound force of the contact end 32, which is conducive to the stable transmission of signals.

[0031] In an exemplary example, the pin 31 and the second through hole 13 have a clamping portion 34 corresponding thereto, and the clamping portion 34 can abut against the edge of the second through hole 13 after the pin 31 is inserted into the second through hole 13, so as to prevent the pin 31 from being separated from the second through hole 13 in a direction away from the solder pin 311, and the clamping portion 34 includes a connecting portion 341 integrally connected to the pin 31 and a spring 342 extending laterally away from the pin 31, and the clamping portion 34 generates elastic deformation under the action of an external force with the connecting portion 341 as a force fulcrum. Preferably, the cross-sectional length of the connecting portion 341 is smaller than the cross-sectional length of the spring 342, which is conducive to reducing the force required to be applied for the elastic deformation of the clamping portion 34.

[0032] like Figure 7-9As shown, in one embodiment, the base 1 is provided with a second through hole 13 which is plugged and matched with the pin 31 of the movable needle 3, and the inner wall of the second through hole 13 corresponding to the clamping portion 34 is provided with a guide surface 131, and the guide surface 131 is an inclined surface, so that the inner diameter of the second through hole 13 gradually decreases along the insertion direction of the pin 31, forming a second through hole 13 which is wide at the top and narrow at the bottom. When the pin 31 is inserted and matched along the second through hole 13, the lower edge of the guide surface 131 and the clamping portion 34 squeeze each other, causing the spring piece 342 to elastically deform and shrink to be close to the pin 31 body. Then, when passing through the second through-hole 13, the guide surface 131 is conducive to increasing the error tolerance of the pin 31 during assembly, and can effectively ensure that the pin 31 smoothly penetrates the second through-hole 13 within a certain error range. At the same time, the inclined design of the guide surface 131 can also avoid the edge of the spring piece 342 to a certain extent during the insertion of the pin 31 toward the second through-hole 13, so as to prevent the edge of the spring piece 342 from rubbing against the inner wall of the second through-hole 13, causing the inner diameter of the second through-hole 13 to change, causing the connection between the movable pin 3 and the base 1 to loosen, and even causing the blocking of the spring piece 342 and the edge of the second through-hole 13 to fail. Preferably, the base 1 is provided with a clearance groove 14 near the welding foot 311, and the clearance groove 14 is arranged around the pin 31 and recessed in the base 1 body.

[0033] When in use, firstly insert the static needle 2 into the first through hole 12, and then insert the moving needle 3 into the second through hole 13. The hole wall of the second through hole 13 facing the outside is the limiting wall 11. After the moving needle 3 is inserted into place, the clamping part 34 is located at the lower side of the limiting wall 11 along its insertion direction. At this time, the clamping part 34 loses the restriction of the limiting wall 11, so that the spring piece 342 is deformed and restored. The spring piece 342 is clamped and blocked with the lower edge of the limiting wall 11 to prevent the moving needle 3 from escaping from the second through hole 13 in the direction away from the welding foot 311. In order to prevent the second through hole 13 from being damaged due to high temperature and welding stress during the welding process between the moving needle 3 and the circuit board, the limiting wall 11 is thicker by 0.2 mm than the conventional setting. The moving needle 3 and the static needle 2 are both provided with a welding foot 311 with a conical cross section. The conical welding foot 311 helps the welding foot 311 of the moving needle 3 and the static needle 2 to be inserted and positioned with the welding hole of the circuit board, making assembly simpler and improving production efficiency. In the prior art, a reflow soldering process can be used to fix the solder foot 311 to the circuit board. Due to the setting of the limiting groove, the solder between the solder foot 311 and the solder point of the circuit board can overflow and diffuse into the limiting groove during the reflow soldering process, and no gap will be generated between the base 1 and the circuit board due to the solder, thereby affecting the accuracy of the production process.

[0034] Compared with the prior art, the audio jack provided by the utility model has a simple structure. By setting the cross-sectional length of the middle connecting part of the clamping part to be smaller than the cross-sectional length of the spring piece, the force required for the elastic deformation of the clamping part is reduced, making it easier to connect the pin and the base through penetration, and also reducing the damage to the base caused by the interaction between the elastic force of the clamping part and the base during assembly, which is beneficial to improving the quality and production efficiency of the audio jack. The setting of the guide surface can effectively guide the pin when the movable pin is connected to the base through penetration, and can also avoid the spring piece, preventing the edge of the spring piece from scratching the inner wall of the second perforation and causing damage to the base.

[0035] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An audio jack, comprising a base (1), the base (1) being provided with a jack, and a static pin (2) and a dynamic pin (3) penetrating the base (1) along two sides of the jack, characterized in that: The movable needle (3) comprises a pin (31) inserted into the base (1) and a contact end (32); the pin (31) is provided with a clamping portion (34); the clamping portion (34) comprises a connecting portion (341) integrally arranged with the pin (31) and a spring sheet (342) extending laterally away from the pin (31); the cross-sectional length of the connecting portion (341) is smaller than the cross-sectional length of the spring sheet (342).

2. The audio jack according to claim 1, characterized in that: The base (1) and the movable needle (3) are plugged together to form a second through hole (13), and a guide surface (131) is provided at a position corresponding to the second through hole (13) and the clamping portion (34).

3. The audio jack according to claim 2, characterized in that: The second through hole (13) is provided with a limiting wall (11), and the clamping portion (34) can pass through the second through hole (13) so that the spring sheet (342) is clamped with the edge of the limiting wall (11).

4. The audio jack according to claim 1, characterized in that: A welding foot (311) is provided at one end of the pin (31) away from the contact end (32), and the longitudinal cross section of the welding foot (311) is conical.

5. The audio jack according to claim 4, characterized in that: The angle between the two oblique sides of the longitudinal section of the welding foot (311) is α, and 20°≤α≤90°.

6. The audio jack according to claim 4, characterized in that: The free end of the soldering foot (311) is inserted into the circuit board and fixed to the circuit board by soldering.

7. The audio jack according to claim 4, characterized in that: An end of the base (1) close to the welding foot (311) is provided with a clearance groove (14), and the clearance groove (14) is a groove arranged around the pin (31).

8. The audio jack according to claim 1, wherein: A bending portion (33) is provided between the pin (31) and the contact end (32), and the bending portion (33) is arc-shaped.

9. The audio jack according to claim 1, characterized in that: The contact end (32) is provided with a protruding contact point (321) facing the socket, and the contact point (321) can abut against an external device inserted into the socket.

10. The audio jack according to claim 1, characterized in that: The static needle (2) and the dynamic needle (3) are respectively inserted and connected with the base (1) in the same direction.

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