An ultra-thin plate-sinking earphone socket

Abstract

This utility model provides an ultra-thin recessed headphone jack, including a housing; a base plate is provided at the bottom of the housing; a mounting shell is provided on the base plate; reinforcing ribs are provided on the outer side of the mounting shell; a plug-in space is provided through the middle of the mounting shell for inserting a headphone plug; by distributing the microphone, ground, left and right channels, and detection terminals on the left and right sides of the plug-in space, the traditional axial stacking mode is broken, and the Z-axis height is compressed; the pins of each terminal are bent in the opposite direction towards the bottom of the base plate and embedded in the corresponding plug-in groove, thereby reducing the overall structural thickness; reinforcing ribs are added to both sides of the mounting shell to offset the stress of the recessed plate structure and ensure the deformation resistance under ultra-thin design.

Description

Technical Field

[0001] This utility model relates to the field of headphone plug technology, and in particular to an ultra-thin recessed headphone socket. Background Technology

[0002] The increasing pursuit of thinness and lightness in mobile electronic devices (such as smartphones and tablets) has led to the structural limitations of traditional 3.5mm headphone jacks failing to meet the demands for thickness reduction. Conventional jacks employ a vertically stacked spring-loaded terminal design, resulting in a relatively large overall height (typically ≥2.5mm), occupying internal space and hindering thickness reduction. While existing ultra-thin solutions attempt a recessed design (bending the pins to the bottom of the socket), they still suffer from the following drawbacks: terminals are arranged axially along the socket, increasing its length and hindering compact layout; densely packed multiple contacts are prone to electromagnetic interference, and asynchronous contact timing during insertion and removal generates current noise; and the bent pins have weak resistance to deformation, leading to loosening or poor contact after repeated insertion and removal. Utility Model Content

[0003] The purpose of this invention is to solve the problems mentioned above and provide an ultra-thin recessed headphone jack.

[0004] An ultra-thin recessed headphone jack, including The outer casing; a base plate is provided at the bottom of the outer casing; a mounting shell is provided on the base plate; reinforcing ribs are provided on the outer side of the mounting shell; The mounting housing has a through-hole for inserting an earphone plug. The outer side wall of the front end of the mounting housing is provided with a first mounting groove for mounting a microphone terminal; The first mounting slot has a first notch at its front end; the first mounting slot is connected to the insertion space through the first notch; the first mounting slot has a first insertion groove on its bottom surface along the side wall of the mounting shell. The mounting housing is provided with a second mounting slot and a third mounting slot in sequence; the second mounting slot is used to install a ground terminal; the third mounting slot is used to install a left channel terminal; The second mounting groove and the third mounting groove penetrate the bottom plate respectively, and a second insertion groove and a third insertion groove are respectively provided on the edge of the bottom plate; The rear of the mounting shell is provided with an abutment end; the abutment end is located at the end of the insertion space; a fourth mounting groove, a fifth mounting groove and a sixth mounting groove are respectively opened on both sides of the abutment end; the fifth mounting groove and the sixth mounting groove are connected. The bottom of the fourth mounting slot extends through the base plate, and a fourth insertion slot is provided in the base plate; The fifth and sixth mounting slots are provided through the bottom plate and are also provided with a fifth insertion slot; The fourth mounting slot is used to install a right channel terminal; the fifth and sixth mounting slots are used to install detection terminals. The second, third, fourth, and fifth mounting slots are respectively connected to the insertion space; The reinforcing ribs are provided on both sides of the mounting shell, and are located between the third and fourth insertion slots, and between the first and fifth insertion slots, respectively. The headphone plug includes a microphone segment, a ground segment, a left channel segment, and a right channel segment; an insulating ring is provided between the microphone segment, the ground segment, the left channel segment, and the right channel segment; a conical tip is provided at the front end of the right channel segment; and a gold-plated piece is provided at the tip of the conical tip.

[0005] Furthermore, the insertion space includes a first insertion segment, a second insertion segment, and a third insertion segment; the inner diameters of the first insertion segment, the second insertion segment, and the third insertion segment decrease sequentially; the first mounting groove, the second mounting groove, and the third mounting groove are located within the first insertion segment; the fourth mounting groove and the fifth mounting groove are located within the third insertion segment.

[0006] Furthermore, the right channel segment is located within the third connector segment; the left channel segment is located within the second connector segment; and the microphone segment and ground segment are located within the first connector segment.

[0007] Furthermore, the first mounting groove includes a first recessed groove formed on the upper surface of the mounting shell; a first limiting groove is provided on the side wall of the first mounting groove; the first recessed groove, the first limiting groove and the first insertion groove are connected in sequence; The microphone terminal has a first contact point at its front end, which is located in the insertion space through a first notch; a first limiting plate is integrally bent on one side of the microphone terminal; the first limiting plate is inserted into a first limiting groove; a first pin is provided at the bottom of the first limiting plate; the first pin is located in the first insertion groove.

[0008] Furthermore, a second notch is provided on the front side of the second mounting groove; a second limiting groove is provided on the inner side of the second mounting groove; the second limiting groove is connected to the insertion space through the second notch; the second limiting groove and the second insertion groove are connected through a second recessed groove; the second recessed groove is located on the bottom surface of the base plate. The grounding terminal has a second contact point integrally bent at its front end; the second contact point is located in the insertion space through a second notch; the grounding terminal is inserted into the second mounting groove through a second limiting groove; the grounding terminal has a second pin integrally bent at its rear end; the second pin is located in the second insertion groove through a second recess.

[0009] Furthermore, the third mounting slot is located behind the second mounting slot, and the third mounting slot has the same structure as the second mounting slot; the left channel terminal is disposed in the third mounting slot, and has the same structure as the ground terminal.

[0010] Furthermore, the fourth mounting groove has a fourth notch on its side wall; a fourth arc groove at its front end; a fourth limiting groove on its side wall; the fourth limiting groove is connected to the insertion space through the fourth notch; a fourth recessed groove at the bottom of the fourth limiting groove; and the fourth limiting groove is connected to the fourth insertion groove through the fourth recessed groove. The front part of the right channel terminal is integrally bent and has a fourth contact; the bent part of the right channel terminal is located in the fourth arc groove; the fourth contact is located in the insertion space through the fourth notch; the right channel terminal is inserted into the fourth mounting groove through the fourth limiting groove; the end of the right channel terminal is integrally bent and has a fourth pin; the fourth pin passes through the fourth recess and is located in the fourth insertion groove.

[0011] Furthermore, the fifth mounting slot is arranged parallel to the sixth mounting slot; a fifth notch is provided on one side of the fifth mounting slot; the fifth mounting slot is connected to the insertion space through the fifth notch; A sixth notch is provided between the fifth mounting slot and the sixth mounting slot; The fifth mounting slot and the sixth mounting slot are respectively connected to the fifth insertion slot through the fifth recessed slot and the sixth recessed slot provided at the bottom; The detection terminal includes a first detection element and a second detection element; the first detection element is installed in a fifth mounting groove; the second detection element is installed in a sixth mounting groove; a first elastic sheet is provided in the middle of the first detection element; an insulating contact block is provided on the front side of the end of the first elastic sheet; the insulating contact block is located at the bottom of the insertion space; a fifth contact is provided on the rear side of the end of the first elastic sheet; a second elastic sheet is provided in the middle of the second detection element; a sixth contact is provided on the end of the second elastic sheet; the first elastic sheet and the second elastic sheet are arranged in parallel; the fifth contact and the sixth contact are arranged opposite to each other; a fifth pin is provided at the bottom of the first detection element; a sixth pin is provided at the bottom of the second detection element; the fifth pin is disposed in the fifth insertion groove through a fifth recess; the sixth pin is disposed in the fifth insertion groove through a sixth recess.

[0012] Furthermore, the conical tip can abut against the abutting end.

[0013] The beneficial effects of this utility model are: 1. By separating the microphone, ground, left and right channels, and detection terminals on the left and right sides of the insertion space, the traditional axial stacking mode is broken and the Z-axis height is compressed; the pins of each terminal are bent in the opposite direction to the bottom of the base plate and embedded in the corresponding insertion slot, thus reducing the overall structural thickness; reinforcing ribs are added to both sides of the mounting shell to offset the stress of the recessed plate structure and ensure the deformation resistance under ultra-thin design. 2. Through the parallel elastic sheet and insulating contact block of the first and second detection elements, the fifth and sixth contacts are mechanically timed during insertion and removal. Each terminal is precisely fixed by a limiting groove to prevent lateral displacement; the gold-plated sheet on the tapered tip of the headphone plug reduces contact resistance and improves signal stability; the tapered tip fits tightly against the contact end to distribute insertion and extraction stress and avoid damage to the internal structure. The three-section inner diameter matches the segmented structure of the headphone plug, optimizing the position of each contact point within a limited space; multi-level recessed grooves are opened on the bottom of the base plate to house the pins below the pad plane, achieving a completely flat PCB installation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the bottom of the device; Figure 3 This is a schematic diagram of the headphone plug for this device; Figure 4 This is a schematic diagram of the outer casing of the device; Figure 5 This is a schematic diagram of the bottom of the outer casing of this device; Figure 6 This is a schematic diagram of the front side of the outer casing of this device; Figure 7 This is a cross-sectional view of the outer casing of this device; Figure 8 Diagram of microphone terminals; Figure 9 This is a schematic diagram of the ground wire and left channel terminals; Figure 10 This is a schematic diagram of the right channel terminal; Figure 11 This is a schematic diagram of the detection terminals; Figure 12 This is a schematic diagram of the rear of the detection terminal; In the diagram, 1 is the outer casing; 11 is the base plate; 12 is the mounting shell; 121 is the first mounting groove; 1211 is the first notch; 1212 is the first insertion groove; 1213 is the first recessed groove; 1214 is the first limiting groove; 122 is the second mounting groove; 1221 is the second insertion groove; 1222 is the second notch; 1223 is the second limiting groove; 1224 is the second recessed groove; 123 is the third mounting groove; 1231 is the third insertion groove; 124 is the fourth mounting groove; 1241 is the fourth insertion groove; 1242 is the fourth notch; 1243 is the fourth arc-shaped groove; 1244 is the fourth limiting groove; 1245 is the fourth recessed groove; 125 is the fifth mounting groove; 1251 is the fifth insertion groove; 1252 is the fifth notch; 1253 is the fifth recessed groove; 126 is the sixth mounting groove; 1261 is the sixth notch; 1262 is the sixth recessed groove; 19. 13. Reinforcing rib; 2. Insertion space; 21. First insertion segment; 22. Second insertion segment; 23. Third insertion segment; 3. Headphone plug; 31. Microphone segment; 32. Ground segment; 33. Left channel segment; 34. Right channel segment; 35. Insulating ring; 36. Conical tip; 37. Gold-plated sheet; 4. Microphone terminal; 41. First contact; 42. First limiting plate; 43. First pin; 5. Ground terminal; 51. Second contact; 52. Second pin; 6. Right channel terminal; 61. Fourth contact; 62. Fourth pin; 7. Detection terminal; 71. First detection element; 711. First elastic sheet; 712. Insulating contact block; 713. Fifth contact; 714. Fifth pin; 72. Second detection element; 721. Second elastic sheet; 722. Sixth contact; 723. Sixth pin; 8. Left channel terminal. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0016] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Example 1 like Figures 1-7 As shown: An ultra-thin recessed headphone jack, including The outer shell 1 has a base plate 11 at its bottom and a mounting shell 12 on the base plate 11. The mounting shell 12 has a reinforcing rib 13 on its outer side. The lateral reinforcing rib 13 resists torsional loads and the limiting groove constrains the six-degree-of-freedom displacement of the terminal, forming a rigid and flexible anti-seismic frame to cope with extreme working conditions such as drops and compression.

[0019] The mounting housing 12 has a through-hole space 2 for inserting an earphone plug 3. The outer side wall of the front end of the mounting shell 12 is provided with a first mounting groove 121 for mounting a microphone terminal 4; The first mounting groove 121 has a first notch 1211 at its front end; the first mounting groove 121 is connected to the insertion space 2 through the first notch 1211; the first mounting groove 121 has a first insertion groove 1212 on its bottom surface along the side wall of the mounting shell 12; The mounting housing 12 is provided with a second mounting slot 122 and a third mounting slot 123 in sequence; the second mounting slot 122 is used to install a ground terminal 5; the third mounting slot 123 is used to install a left channel terminal 8; The second mounting groove 122 and the third mounting groove 123 respectively penetrate the base plate 11, and the second insertion groove 1221 and the third insertion groove 1231 are respectively provided on the edge of the base plate 11; The mounting shell 12 is provided with an abutment end 19 at the rear; the abutment end 19 is located at the end of the insertion space 2; a fourth mounting groove 124, a fifth mounting groove 125 and a sixth mounting groove 126 are respectively opened on both sides of the abutment end 19; the fifth mounting groove 125 and the sixth mounting groove 126 are connected. Tapered tip 36 - abutting end 19 buffer coupling: The tapered tip 36 of the headphone plug 3 and the abutting end 19 of the socket form a self-aligning tapered surface contact, and the insertion and removal impact force is evenly diffused along the shell to avoid plastic deformation caused by local stress concentration; The bottom of the fourth mounting groove 124 is provided through the bottom plate 11, and a fourth insertion groove 1241 is provided on the bottom plate 11; The fifth mounting slot 125 and the sixth mounting slot 126 are provided through the base plate 11, and a fifth insertion slot 1251 is provided therein; The fourth mounting slot 124 is used to install the right channel terminal 6; the fifth mounting slot 125 and the sixth mounting slot 126 are used to install the detection terminal 7. The second mounting slot 122, the third mounting slot 123, the fourth mounting slot 124 and the fifth mounting slot 125 are respectively connected to the insertion space 2; The reinforcing ribs 13 are provided on both sides of the mounting shell 12, and are respectively located between the third insertion groove 1231 and the fourth insertion groove 1241, the first insertion groove 1212 and the fifth insertion groove 1251; The headphone plug 3 includes a microphone segment 31, a ground segment 32, a left channel segment 33, and a right channel segment 34; an insulating ring 35 is provided between each of the microphone segment 31, the ground segment 32, the left channel segment 33, and the right channel segment 34; a conical tip 36 is provided at the front end of the right channel segment 34; and a gold-plated sheet 37 is provided at the end of the conical tip 36.

[0020] Breaking away from the traditional linear layout of unidirectional stacked terminals along the axis of the headphone jack, the microphone, ground, channel and detection terminals 7 are innovatively distributed around the plug space 2 on the side, realizing the decoupling and reconstruction of the contact array in the spatial dimension, so that the Z-axis height is no longer limited by the thickness of the terminal stack, providing original structural support for the slimming of the whole device.

[0021] By bending the pins in the reverse and nesting them in the recessed groove of the base plate 11, the vertical occupation of the traditional soldered pins on the PCB board is completely eliminated, making the bottom of the socket and the circuit board form a seamless coplanar plane, freeing up internal stacking space, especially suitable for extremely narrow spaces such as the hinge area of ​​foldable screen devices and the lugs of smartwatches.

[0022] The reverse bending process allows the pins to naturally conform to the base plate 11 reference surface during bending, avoiding the manual leveling process and reducing mass production fluctuations.

[0023] The insertion space 2 includes a first insertion segment 21, a second insertion segment 22, and a third insertion segment 23; the inner diameters of the first insertion segment 21, the second insertion segment 22, and the third insertion segment 23 decrease sequentially; the first mounting groove 121, the second mounting groove 122, and the third mounting groove 123 are located within the first insertion segment 21; the fourth mounting groove 124 and the fifth mounting groove 125 are located within the third insertion segment 23.

[0024] The stepped insertion space 2 inside the socket and the insulating ring 35 of the headphone plug 3 form a multi-level guiding structure, which allows unconventional insertion and avoids damage to the interface caused by accidental operation in the pocket of a mobile device. The right channel segment 34 is located within the third plug segment 23; the left channel segment 33 is located within the second plug segment 22; and the microphone segment 31 and the ground segment 32 are located within the first plug segment 21.

[0025] The first mounting groove 121 includes a first recessed groove 1213 formed on the upper surface of the mounting shell 12; a first limiting groove 1214 is provided on the side wall of the first mounting groove 121; the first recessed groove 1213, the first limiting groove 1214 and the first insertion groove 1212 are connected in sequence. The microphone terminal 4 has a first contact 41 at its front end, and the first contact 41 is located in the insertion space 2 through the first notch 1211; a first limiting plate 42 is integrally bent on one side of the microphone terminal 4; the first limiting plate 42 is inserted into the first limiting groove 1214; a first pin 43 is provided at the bottom of the first limiting plate 42; the first pin 43 is located in the first insertion groove 1212.

[0026] The second mounting groove 122 has a second notch 1222 on its front side; the second mounting groove 122 has a second limiting groove 1223 on its inner side; the second limiting groove 1223 is connected to the insertion space 2 through the second notch 1222; the second limiting groove 1223 is connected to the second insertion groove 1221 through a second recess 1224; the second recess 1224 is located on the bottom surface of the base plate 11. The ground terminal 5 has a second contact 51 integrally bent at its front end; the second contact 51 is located in the insertion space 2 through the second notch 1222; the ground terminal 5 is inserted into the second mounting groove 122 through the second limiting groove 1223; the ground terminal 5 has a second pin 52 integrally bent at its rear end; the second pin 52 is located in the second insertion groove 1221 through the second recess 1224.

[0027] The third mounting slot 123 is located behind the second mounting slot 122, and the third mounting slot 123 has the same structure as the second mounting slot 122; the left channel terminal 8 is disposed in the third mounting slot 123, and has the same structure as the ground terminal 5.

[0028] The fourth mounting groove 124 has a fourth notch 1242 on its side wall; the fourth mounting groove 124 has a fourth arc groove at its front end; the fourth mounting groove 124 has a fourth limiting groove 1244 on its side wall; the fourth limiting groove 1244 is connected to the insertion space 2 through the fourth notch 1242; the fourth limiting groove 1244 has a fourth recessed groove 1245 at its bottom; the fourth limiting groove 1244 is connected to the fourth insertion groove 1241 through the fourth recessed groove 1245. The right channel terminal 6 has a fourth contact 61 integrally bent at the front; the bent part of the right channel terminal 6 is located in the fourth arc groove; the fourth contact 61 is located in the insertion space 2 through the fourth notch 1242; the right channel terminal 6 is inserted into the fourth mounting groove 124 through the fourth limiting groove 1244; the right channel terminal 6 has a fourth pin 62 integrally bent at the end; the fourth pin 62 passes through the fourth recess 1245 and is located in the fourth insertion groove 1241.

[0029] The fifth mounting slot 125 is arranged parallel to the sixth mounting slot 126; a fifth notch 1252 is provided on one side of the fifth mounting slot 125; the fifth mounting slot 125 is connected to the insertion space 2 through the fifth notch 1252; A sixth notch 1261 is provided between the fifth mounting slot 125 and the sixth mounting slot 126; The fifth mounting slot 125 and the sixth mounting slot 126 are respectively connected to the fifth insertion slot 1251 through the fifth recessed slot 1253 and the sixth recessed slot 1262 provided at the bottom; The detection terminal 7 includes a first detection element 71 and a second detection element 72; the first detection element 71 is installed in a fifth mounting groove 125; the second detection element 72 is installed in a sixth mounting groove 126; a first elastic sheet 711 is provided in the middle of the first detection element 71; an insulating contact block 712 is provided on the front side of the end of the first elastic sheet 711; the insulating contact block 712 is located at the bottom of the insertion space 2; a fifth contact point 713 is provided on the rear side of the end of the first elastic sheet 711; a second elastic sheet 72 is provided in the middle of the second detection element 72. The first elastic piece 711 and the second elastic piece 721 are provided with a sixth contact 722 at their ends; the first elastic piece 711 and the second elastic piece 721 are arranged in parallel; the fifth contact 713 and the sixth contact 722 are arranged opposite to each other; the first detection element 71 is provided with a fifth pin 714 at its bottom; the second detection element 72 is provided with a sixth pin 723 at its bottom; the fifth pin 714 is provided in the fifth insertion slot 1251 through a fifth recess 1253; the sixth pin 723 is provided in the fifth insertion slot 1251 through a sixth recess 1262.

[0030] The unique dual-elastic sheet detection terminal 7 forms a fully mechanical logic gate, which uses the displacement of the insulating contact block 712 to precisely trigger the contact on / off sequence. When inserted, it forces "off before on" and when pulled out, it ensures "on before off", physically isolating noises such as popping and buzzing caused by transient current changes. It does not require external filtering circuits, thus reducing BOM costs.

[0031] The channel terminals and detection terminals 7 are arranged orthogonally and isolated in space. The left and right channels are distributed on the side, and the detection terminals 7 are located at the rear. This greatly reduces crosstalk of parallel signals, suppresses electromagnetic noise from the source, and ensures the purity of high-fidelity audio transmission.

[0032] The conical tip 36 can abut against the abutting end 19.

[0033] This invention breaks through the physical thickness bottleneck with "surrounding contacts + reverse bending pins", eliminates insertion and removal noise with "dual elastic sheet true timing mechanism", and ensures the strength of the ultra-thin structure with "reinforcing ribs + limiting grooves", thus achieving a technological leap in the three dimensions of extreme thickness, zero noise and high reliability for the 3.5mm headphone jack.

[0034] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An ultra-thin recessed headphone jack, characterized in that: include The outer shell (1) is provided with a bottom plate (11) at the bottom of the outer shell (1); a mounting shell (12) is provided on the bottom plate (11); and a reinforcing rib (13) is provided on the outer side of the mounting shell (12). The mounting housing (12) has a through-hole space (2) for inserting an earphone plug (3). The front outer side wall of the mounting housing (12) is provided with a first mounting groove (121) for mounting a microphone terminal (4). The first mounting groove (121) has a first notch (1211) at its front end; the first mounting groove (121) is connected to the insertion space (2) through the first notch (1211); the first mounting groove (121) has a first insertion groove (1212) on its bottom surface along the side wall of the mounting shell (12). The mounting housing (12) is provided with a second mounting slot (122) and a third mounting slot (123) in sequence; the second mounting slot (122) is used to install a ground terminal (5); the third mounting slot (123) is used to install a left channel terminal (8); The second mounting groove (122) and the third mounting groove (123) respectively penetrate the base plate (11), and the second insertion groove (1221) and the third insertion groove (1231) are respectively provided on the edge of the base plate (11). The mounting shell (12) is provided with an abutment end (19) at the rear; the abutment end (19) is located at the end of the insertion space (2); a fourth mounting groove (124), a fifth mounting groove (125) and a sixth mounting groove (126) are respectively opened on both sides of the abutment end (19); the fifth mounting groove (125) and the sixth mounting groove (126) are connected; The bottom of the fourth mounting slot (124) is provided through the bottom plate (11), and a fourth insertion slot (1241) is provided on the bottom plate (11). The fifth mounting slot (125) and the sixth mounting slot (126) are provided through the base plate (11), and a fifth insertion slot (1251) is provided. The fourth mounting slot (124) is used to install the right channel terminal (6); the fifth mounting slot (125) and the sixth mounting slot (126) are used to install the detection terminal (7); The second mounting slot (122), the third mounting slot (123), the fourth mounting slot (124) and the fifth mounting slot (125) are respectively connected to the insertion space (2); The reinforcing ribs (13) are provided on both sides of the mounting shell (12) and are located between the third insertion slot (1231) and the fourth insertion slot (1241), the first insertion slot (1212) and the fifth insertion slot (1251), respectively. The headphone plug (3) includes a microphone segment (31), a ground segment (32), a left channel segment (33), and a right channel segment (34); an insulating ring (35) is provided between the microphone segment (31), the ground segment (32), the left channel segment (33), and the right channel segment (34); a conical tip (36) is provided at the front end of the right channel segment (34); and a gold-plated sheet (37) is provided at the end of the conical tip (36).

2. The ultra-thin recessed headphone jack according to claim 1, characterized in that: The insertion space (2) includes a first insertion segment (21), a second insertion segment (22), and a third insertion segment (23); the inner diameters of the first insertion segment (21), the second insertion segment (22), and the third insertion segment (23) decrease sequentially; the first mounting groove (121), the second mounting groove (122), and the third mounting groove (123) are located within the first insertion segment (21); the fourth mounting groove (124) and the fifth mounting groove (125) are located within the third insertion segment (23).

3. The ultra-thin recessed headphone jack according to claim 1, characterized in that: The right channel segment (34) is located within the third plug segment (23); the left channel segment (33) is located within the second plug segment (22); and the microphone segment (31) and the ground segment (32) are located within the first plug segment (21).

4. The ultra-thin recessed headphone jack according to claim 1, characterized in that: The first mounting groove (121) includes a first recessed groove (1213) formed on the upper surface of the mounting shell (12); a first limiting groove (1214) is provided on the side wall of the first mounting groove (121); the first recessed groove (1213), the first limiting groove (1214) and the first insertion groove (1212) are connected in sequence; The microphone terminal (4) has a first contact (41) at its front end, and the first contact (41) is located in the insertion space (2) through the first notch (1211); the microphone terminal (4) has a first limiting plate (42) integrally bent on one side; the first limiting plate (42) is inserted into the first limiting groove (1214); the first limiting plate (42) has a first pin (43) at its bottom; the first pin (43) is located in the first insertion groove (1212).

5. The ultra-thin recessed headphone jack according to claim 1, characterized in that: The second mounting groove (122) has a second notch (1222) on its front side; the second mounting groove (122) has a second limiting groove (1223) on its inner side; the second limiting groove (1223) is connected to the insertion space (2) through the second notch (1222); the second limiting groove (1223) and the second insertion groove (1221) are connected through a second recess (1224); the second recess (1224) is located on the bottom surface of the base plate (11); The ground terminal (5) has a second contact (51) integrally bent at the front end; the second contact (51) is located in the insertion space (2) through the second notch (1222); the ground terminal (5) is inserted into the second mounting groove (122) through the second limiting groove (1223); the ground terminal (5) has a second pin (52) integrally bent at the rear; the second pin (52) is located in the second insertion groove (1221) through the second recess (1224).

6. The ultra-thin recessed headphone jack according to claim 5, characterized in that: The third mounting slot (123) is located behind the second mounting slot (122), and the third mounting slot (123) has the same structure as the second mounting slot (122); the left channel terminal (8) is located in the third mounting slot (123), and has the same structure as the ground terminal (5).

7. The ultra-thin recessed headphone jack according to claim 1, characterized in that: The fourth mounting groove (124) has a fourth notch (1242) on its side wall; the fourth mounting groove (124) has a fourth arc groove at its front end; the fourth mounting groove (124) has a fourth limiting groove (1244) on its side wall; the fourth limiting groove (1244) is connected to the insertion space (2) through the fourth notch (1242); the fourth limiting groove (1244) has a fourth recessed groove (1245) at its bottom; the fourth limiting groove (1244) is connected to the fourth insertion groove (1241) through the fourth recessed groove (1245); The front part of the right channel terminal (6) is integrally bent and provided with a fourth contact (61); the bent part of the right channel terminal (6) is located in the fourth arc groove; the fourth contact (61) is located in the insertion space (2) through the fourth notch (1242); the right channel terminal (6) is inserted into the fourth mounting groove (124) through the fourth limiting groove (1244); the end of the right channel terminal (6) is integrally bent and provided with a fourth pin (62); the fourth pin (62) passes through the fourth recess (1245) and is located in the fourth insertion groove (1241).

8. The ultra-thin recessed headphone jack according to claim 1, characterized in that: The fifth mounting slot (125) is arranged parallel to the sixth mounting slot (126); a fifth notch (1252) is provided on one side of the fifth mounting slot (125); the fifth mounting slot (125) is connected to the insertion space (2) through the fifth notch (1252); A sixth notch (1261) is provided between the fifth mounting slot (125) and the sixth mounting slot (126); The fifth mounting slot (125) and the sixth mounting slot (126) are respectively connected to the fifth insertion slot (1251) through the fifth recess (1253) and the sixth recess (1262) provided at the bottom; The detection terminal (7) includes a first detection element (71) and a second detection element (72); the first detection element (71) is installed in the fifth mounting groove (125); the second detection element (72) is installed in the sixth mounting groove (126); a first elastic piece (711) is provided in the middle of the first detection element (71); an insulating contact block (712) is provided on the front side of the end of the first elastic piece (711); the insulating contact block (712) is located at the bottom of the insertion space (2); a fifth contact point (713) is provided on the rear side of the end of the first elastic piece (711); a second elastic piece (72) is provided in the middle of the second detection element (72). The first elastic piece (711) and the second elastic piece (721) are arranged in parallel; the fifth contact (713) and the sixth contact (722) are arranged opposite to each other; the first detection element (71) is provided with a fifth pin (714) at the bottom; the second detection element (72) is provided with a sixth pin (723) at the bottom; the fifth pin (714) is provided in the fifth insertion slot (1251) through the fifth recess (1253); the sixth pin (723) is provided in the fifth insertion slot (1251) through the sixth recess (1262).

9. The ultra-thin recessed headphone jack according to claim 1, characterized in that: The conical tip (36) can abut against the abutting end (19).

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