CN214754361U

CN214754361U - Interchangeable interface electric connection device and earphone crossover sub

Info

Publication number: CN214754361U
Application number: CN202120795911.3U
Authority: CN
Inventors: 毛献和; 陈泳杰
Original assignee: Fiio Electronics Technology Co ltd
Current assignee: Fiio Electronics Technology Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-11-16
Anticipated expiration: 2031-04-16

Abstract

The utility model belongs to the technical field of power connector equipment, a interchangeable interface electric connection device and earphone crossover sub is related to, including interchangeable module and host computer module, interchangeable module has shell one, host computer module has shell two, the location guide part of mutually supporting has on shell one and the shell two, host computer module has the joint subassembly, interchangeable module has joint subassembly fitting piece, joint subassembly and joint subassembly fitting piece looks adaptation, realize being connected with dismantling of interchangeable module through pressing down the joint subassembly, be provided with electrical component in the interchangeable module, the electrical component specification of different interchangeable modules is different, interchangeable module passes through electrical connection subassembly and host computer module electricity and is connected. The utility model discloses can realize the external equipment of the different specifications of a switching equipment adaptation, have simple structure, connect reliably, convenient operation's characteristics have improved the application scope of adapter.

Description

Interchangeable interface electric connection device and earphone crossover sub

Technical Field

The utility model relates to a power connector equipment technical field particularly, relates to an interchangeable interface electric connection device and earphone crossover sub.

Background

At present, a plurality of mobile terminal equipment manufacturers gradually cancel 3.5mm earphone interfaces, some audio decoding or power amplifier equipment still exist in the market, in order to enable the equipment to be still used for improving the audio quality, some adapters capable of being connected through a mobile terminal charging port appear, original earphones or audio improving devices capable of being still used through the adapters, but the existing connectors or converting devices have the problem of single structural specification, for some equipment with different interfaces, a plurality of adapters or devices need to be purchased, the production cost of manufacturers is increased, the use cost of consumers is also improved, and certain resource waste problem exists.

Disclosure of Invention

An object of the utility model is to provide an interchangeable interface electric connection device and earphone crossover sub has interchangeable part to solve among the prior art adapter and only have single interface, change the inconvenient problem of external equipment.

The utility model discloses a realize through following technical scheme: the utility model provides an interchangeable interface electric connecting device, includes interchangeable module and host computer module, interchangeable module has shell one, host computer module has shell two, have the location guide part of mutually supporting on shell one and the shell two, host computer module has the joint subassembly, interchangeable module has joint subassembly fitting piece, joint subassembly and joint subassembly fitting piece looks adaptation, through pressing the joint subassembly realizes being connected with dismantling of interchangeable module, be provided with electric assembly in the interchangeable module, the electric assembly specification of different interchangeable modules is different, interchangeable module passes through electric connection assembly and is connected with host computer module electricity. The electric assembly is an earphone seat assembly, and the interface specifications of different earphone seat assemblies are different.

In the scheme, different replaceable assemblies are selected according to the specifications of the peripheral plug, and the replaceable assemblies are connected with the host module, so that the switching of earphones with different specifications is realized.

Furthermore, a positioning groove and a guide groove are formed in the middle of the bottom surface of the first shell; the cross section of the second shell is integrally n-shaped, and the middle of the top surface of the second shell is provided with a guide block and a positioning bulge; the positioning groove is matched with the positioning bulge, the guide groove is matched with the guide block, and the positioning groove and the positioning bulge, the guide groove and the guide block form the positioning guide component.

Furthermore, it is protruding that the location is rectangular shape, the bellied both sides in location are provided with a guide block respectively, the constant head tank is rectangular shape recess, the both sides of constant head tank are provided with a guide way respectively.

In the scheme, the replaceable module and the host module can be conveniently connected together through the positioning guide part, and the connection efficiency is improved.

Furthermore, the clamping assembly comprises two buckles, the buckles are respectively arranged on the side parts of the two ends of the shell, the lower part of one side of each buckle is provided with a pressing part, the upper part of one side of each buckle is provided with a buckle bulge, and the two ends of the bottom surface of the shell I are provided with an upper buckle groove and an upper mounting groove; the top surface both ends of shell two are provided with down mounting groove and lower buckle and lead to groove two, it leads to groove one to be provided with down the buckle in the mounting groove down, the side of going up mounting groove and last buckle recess has the catching position groove, the catching position groove constitutes the joint subassembly piece, the buckle arch of one of them buckle passes buckle under and leads to groove two, with the catching position groove joint of last buckle recess, the buckle arch of another buckle passes buckle under and leads to groove one, with the catching position groove joint of last mounting groove.

Further, the lower part of the second shell is connected with a base, two ends of the base are provided with buckle mounting grooves, the lower ends of the buckles are arranged in the buckle mounting grooves, and the width of the buckle mounting grooves is larger than the thickness of the lower ends of the buckles; the buckle is characterized in that a baffle is arranged beside the buckle mounting groove, a spring positioning portion is arranged on the other side of the buckle, a spring is sleeved on the spring positioning portion, and the end portion of the spring is abutted against the baffle.

In the scheme, the detachable connection between the replaceable module and the host module is realized through the buckle arranged on the host module and the buckle groove arranged on the replaceable module, and the clamping mode has convenient and reliable effect.

Furthermore, the buckle protrusions are rectangular protrusions, the rectangular protrusions are at least provided with two rows, and the outer side of the pressing portion is provided with anti-skid grains.

Furthermore, the inboard of baffle is provided with a plurality of support archs, be provided with the through-hole on the support archs, the inboard top surface of shell two sets up two reference columns and two screw hole posts that are provided with the screw hole, the reference column cooperates with two of them through-holes, the screw hole post cooperates with other support archs, compresses tightly the main control board jointly.

In the above scheme, through setting up the control panel on supporting protrusion to cooperation reference column and screw hole realize the firm centre gripping of control panel, so that the heat dissipation of circuit board.

Further, the electric connection assembly comprises a socket, a plug and a socket connecting plate, the socket is arranged in the upper mounting groove, one end of the socket connecting plate is connected with the electric assembly, the other end of the socket connecting plate is connected with the socket, and the plug is mounted in the lower mounting groove.

In addition, the earphone adapter is also provided, and the replaceable interface electric connecting device is used.

Compared with the prior art, the utility model beneficial effect be: the utility model discloses an interchangeable interface electric connection device has interchangeable module and host computer module, be provided with the earphone seat subassembly of different specifications in the interchangeable module wherein, the user can select different interchangeable modules according to the earphone structure of different specifications, realize dismantling the connection through buckle subassembly between interchangeable module and the host computer module, convenient and fast, and simultaneously, still realize the electricity through electric connection component between interchangeable module and the host computer module and connect, can be with the audio signal transmission to the interchangeable module that the host computer module decoded, feed and be connected to the equipment of putting outward of different specifications. The utility model discloses can realize the external equipment of the different specifications of a switching equipment adaptation, have simple structure, connect reliably, convenient operation's characteristics have improved the application scope of adapter.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is an isometric view of the overall structure of the interchangeable interface electrical connector of the present invention;

FIG. 2 is an isometric view of the detachable interface of the electrical connector of the present invention;

FIG. 3 is a sectional view of the whole structure of the electric connector with replaceable interface of the present invention;

FIG. 4 is a first perspective view of the housing of the electrical connector with interchangeable interface of the present invention;

FIG. 5 is a second drawing of a first-axis view of the housing of the electrical connector with interchangeable interface of the present invention;

FIG. 6 is a first perspective view of a housing of the electrical connector with interchangeable interface of the present invention;

fig. 7 is a two-axis cross sectional view of the housing of the electrical connector with replaceable interface of the present invention;

FIG. 8 is a first perspective view of the base of the electrical connector with interchangeable interface of the present invention;

FIG. 9 is an isometric view of the internal structure of the interchangeable interface electrical connector of the present invention;

fig. 10 is a first view of a clip shaft of the electrical connector with interchangeable interface of the present invention;

fig. 11 is a second view of the clip shaft of the electrical connector with interchangeable interface of the present invention;

FIG. 12 is a schematic view showing an electrical connection state of the electrical connector with interchangeable interface according to the present invention;

fig. 13 is a structure diagram of the socket connecting plate of the electric connector with replaceable interface of the present invention.

Icon: 10-a replaceable module; 101-a cover plate; 102-a first housing; 1021-an opening; 1022-a positioning slot; 1023-a guide groove; 1024-mounting a groove; 1025-fitting a snap groove; 1026-catching groove; 1027-open pore; 20-a host module; 201-case two; 2011-guide block; 2012-positioning boss; 2013-lower mounting groove; 2014-a first lower buckle through groove; 2015-fastening through groove II; 2016-wire passing groove; 2017-a locating column; 2018-a threaded column; 202-a base; 2021-baffle plate; 2022-snap fitting groove; 2023-supporting protrusions; 2024-via holes; 203-buckling; 2031-a pressing part; 2032-snap bumps; 2033-anti-skid lines; 2034-spring positioning; 204-a spring; 205-a main control board; 206-a screw; 30-a headset holder assembly; 40-an electrical connection assembly; 401-a socket; 402-a plug; 403-electrical connection plates.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

An electrical interface connector according to an aspect of the present invention is described below with reference to the drawings.

As shown in fig. 1-13, an electrical connector with replaceable interface according to an embodiment of the present invention comprises a replaceable module 10 and a host module 20, wherein the replaceable module 10 has a first housing 102, the host module 20 has a second housing 201, the first housing 102 and the second housing 201 have positioning and guiding components that are engaged with each other, the host module 20 has a latch assembly, the replaceable module 10 has a mating member for the latch assembly, the latch assembly is engaged with the mating member for the latch assembly, the latch assembly is detachably connected to the replaceable module 10 by pressing the latch assembly, an electrical component is disposed in the replaceable module 10, the electrical component is different in size in different replaceable modules 10, so that the replaceable modules 10 with electrical components of multiple sizes can be produced, and the corresponding replaceable modules 10 can be replaced according to different requirements of users, the replaceable module 10 is electrically connected to the host module 20 through an electrical connection assembly 40, and the host module 20 has a signal processing device therein.

Referring to fig. 2, a coordinate system represents the major orientation of the interchangeable interface electrical connector, with X representing the length of the overall device, Y representing the width of the overall device, and Z representing the height of the overall device. Wherein the removable module 10 is moved in the Z-direction to engage with the host module 20.

Specifically, the electrical component is an earphone seat component 30, the interface specifications of different earphone seat components 30 are different, and earphones with different diameter earphone plugs can be inserted into different interface specifications.

As shown in fig. 5, the first housing 102 has an opening 1021, a cavity is formed in the first housing 102, the electrical component is disposed in the cavity, an opening 1027 is disposed on an end surface of the first housing 102, and the earphone seat component 30 is connected to an external plug through the opening 1027; the edge of the first shell 102 is provided with an inward step, the opening 1021 is covered with a cover plate 101, and the cover plate 101 is embedded into the inward step.

As shown in fig. 6, a positioning groove 1022 and a guide groove 1023 are arranged in the middle of the bottom surface of the first housing 102; the cross section of the second shell 201 is integrally n-shaped, and the middle of the top surface of the second shell 201 is provided with a guide block 2011 and a positioning protrusion 2012; the positioning groove 1022 is matched with the positioning projection 2012, the guide groove 1023 is matched with the guide block 2011, and the positioning groove 1022, the positioning projection 2012, the guide groove 1023 and the guide block 2011 form the positioning guide component.

Further, protruding 2012 is the rectangle arch of rectangular shape of location, the both sides of protruding 2012 of location are provided with a guide block 2011 respectively, constant head tank 1022 is the rectangle recess of rectangular shape, the both sides of constant head tank 1022 are provided with a guide way 1023 respectively.

Specifically, the length (X direction) of the positioning projection 2012/positioning groove 1022 is more than twice the length of the guide block 2011/positioning groove 1022, and the height/depth of the guide block 2011/positioning groove 1022 is more than twice the height/depth of the guide block 2011/positioning groove 1022. Therefore, the guide block 2011 can be ensured to contact with the guide groove 1023 first to guide the replaceable module 10 to move towards the host module 20, and finally, the replaceable module 10 can be effectively positioned and limited towards the host module 20 through the contact of the positioning groove 1022 and the positioning protrusion 2012.

Further, as shown in fig. 8 to 11, the clamping assembly includes two buckles 203, the buckles 203 are respectively disposed on the side portions of the two ends of the second housing 201, the pressing portion 2031 is disposed on the lower portion of one side of the buckle 203, and the buckle protrusion 2032 is disposed on the upper portion of one side of the buckle 203;

as shown in fig. 6, both ends of the bottom surface of the first housing 102 are respectively provided with an upper fastening groove 1025 and an upper mounting groove 1024;

a lower mounting groove 2013 and a lower buckle through groove II 2015 are respectively arranged at two ends of the top surface of the second shell 201, and a lower buckle through groove I2014 is arranged in the lower mounting groove 2013;

preferably, the lower mounting groove 2013 is integrally formed on the bottom surface of the housing 201, or may be formed by providing a large through-groove on the bottom surface and then providing a baffle on the through-groove.

The sides of the upper mounting groove 1024 and the upper catching groove 1025 are provided with catching grooves 1026,

the catch slots 1026 form the mating snap-fit components,

the buckle protrusion 2032 of one of the buckles 203 passes through the second lower buckle through groove 2015 and is clamped with the catching groove 1026 of the upper buckle groove 1025,

the first snap projection 2032 of the other snap 203 passes through the first lower snap through slot 2014 and is snapped into the snap slot 1026 of the upper mounting groove 1024.

Further, the lower part of the second housing 201 is connected with a base 202, two ends of the base 202 are provided with buckle mounting grooves 2022, the lower end of the buckle 203 is arranged in the buckle mounting grooves 2022, the width (X direction) of the buckle mounting grooves 2022 is greater than the thickness of the lower end of the buckle 203, and meanwhile, the width (X direction) of the lower buckle through groove one 2014, the lower buckle through groove two 2015 and the upper buckle groove 1025 is greater than the thickness of the lower end of the buckle 203, so that the buckle 203 can be ensured to have a certain movement space when being pressed.

Specifically, the thickness of the lower end of the buckle 203 is smaller than the thickness of the pressing portion 2031, a step can be formed at the lower end of the pressing portion 2031, the step abuts against the edge of the buckle installation groove 2022, and the edge of the buckle installation groove 2022 also has a limiting effect on the buckle 203.

As shown in fig. 11, a baffle 2021 is disposed beside the latch mounting groove 2022, a spring positioning portion 2034 is disposed on the other side of the latch 203, a spring 204 is sleeved on the spring positioning portion 2034, and an end of the spring 204 abuts against the baffle 2021. Specifically, the spring positioning portion 2034 is a cylindrical protrusion disposed on the back of the buckle 203, and the spring 204 may be disposed inside the cylindrical protrusion or sleeved outside the cylindrical protrusion. Wherein, buckle 203 is provided with the annular groove with the protruding juncture of cylindric, but spring 204 joint plays spacing effect in the annular groove to spring 204.

Preferably, the lower edge of the second housing 201 is provided with a concave step, and the base 202 is embedded in the concave step.

Further, the fastening protrusion 2032 is preferably a rectangular protrusion, and may also be a cylindrical protrusion or a triangular protrusion, the rectangular protrusion is at least provided with two rows, and can be effectively clamped into the fastening groove 1026, the fastening groove 1026 has a profile matched with the fastening protrusion 2032, and the outer side of the pressing portion 2031 is provided with the anti-slip texture 2033.

Further, as shown in fig. 7, a plurality of supporting protrusions 2023 are disposed on the inner side of the baffle 2021, the supporting protrusions 2023 are used for supporting the main control board 205, the main control board 205 can be disposed in an overhead manner with respect to the base 202, which is more beneficial for heat dissipation, a through hole 2024 is disposed on the supporting protrusions 2023, two positioning posts 2017 and two threaded posts 2018 with threaded holes are disposed on the top surface of the inner side of the second housing 201, the positioning posts 2017 are matched with two of the through holes 2024, the threaded posts 2018 are matched with the other supporting protrusions 2023 to press the main control board 205 together, wherein the positioning posts 2017 are inserted into the through holes 4 of the supporting protrusions 2023, and the screws 206 are connected with the threaded holes of the threaded posts 2018 after penetrating through the through holes 2024.

Further, as shown in fig. 12 and 13, the electrical connection assembly includes a socket 401, a plug 402 and a socket connecting plate 403, the socket 401 is disposed in an upper mounting groove 1024, the upper mounting groove 1024 has a through groove through which the socket 401 passes, one end of the socket connecting plate 403 is connected to the electrical assembly, the other end is connected to the socket 401, and the plug 402 is mounted in a lower mounting groove 2013. A wire passing groove 2016 is further formed in the lower mounting groove 2013, the wire passing groove 2016 penetrates through the top surface of the second shell 201, the plug 402 is connected with the main control board 205 through a connecting piece or a connecting wire, and the connecting piece or the connecting wire of the plug 402 is connected with the main control board 205 after penetrating through the wire passing groove 2016.

Additionally, according to the utility model discloses an earphone converter, earphone crossover sub is the aforesaid interchangeable interface electric connection device who uses, can conveniently be used for changing the different converters of adaptation according to the earphone of different specifications connects, has improved the replaceability of product, for being used for providing more choices, reduces user's use cost simultaneously.

The utility model discloses interchangeable interface electric connection device's using-way does: as shown in fig. 3, different replaceable modules 10 are selected according to the interface specification of the earphone seat assembly 30, the two snaps 203 are pressed, the two snaps 203 move towards each other in the direction X, the distance between the two snaps 203 is reduced, the guide grooves 1023 and the positioning grooves 1022 of the replaceable module 10 are matched with the guide blocks 2011 and the positioning protrusions 2012 of the host module 20, the upper end of one of the snaps 203 passes through the lower snap through groove two 2015 and the upper snap groove 1025 to be opposite to the catching groove 1026, the other one of the snaps 203 passes through the lower snap through groove one 2014 to be opposite to the catching groove 1026, then the snaps 203 are released, the snap protrusions 32 are clamped with the catching groove 1026, and the plug 402 of the electrical connection assembly 40 is matched with the socket 401, so that the structural connection and the electrical connection of the replaceable module 10 and the host module 20 are realized.

The utility model discloses can realize the external equipment of the different specifications of a switching equipment adaptation, have simple structure, connect reliably, convenient operation's characteristics have improved the application scope of adapter.

It should be noted that, in the case of conflict, the features in the embodiments of the present invention may be combined with each other.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a interchangeable interface electric connection device, includes interchangeable module (10) and host computer module (20), interchangeable module (10) has shell one (102), host computer module (20) has shell two (201), have location guide part of mutually supporting on shell one (102) and shell two (201), host computer module (20) has the joint subassembly, interchangeable module (10) has joint subassembly fitting piece, joint subassembly and joint subassembly fitting piece looks adaptation are through pressing the joint subassembly realizes being connected with dismantling of interchangeable module (10), be provided with electric assembly in interchangeable module (10), the electric assembly specification of different interchangeable module (10) is different, interchangeable module (10) are connected with host computer module (20) electricity through electric connection component (40).

2. The electrical interchangeable interface connector of claim 1, wherein the electrical assembly is a headphone jack assembly (30) and the interface specifications of different headphone jack assemblies (30) are different.

3. The electrical connector with replaceable interface of claim 2, wherein the first housing (102) is provided with a positioning groove (1022) and a guiding groove (1023) at the middle of the bottom surface; the cross section of the second shell (201) is integrally n-shaped, and the middle of the top surface of the second shell (201) is provided with a guide block (2011) and a positioning protrusion (2012); the locating groove (1022) is matched with the locating protrusion (2012), the guide groove (1023) is matched with the guide block (2011), and the locating groove (1022), the locating protrusion (2012), the guide groove (1023) and the guide block (2011) form the locating guide component.

4. The electrical interface connector assembly according to claim 3, wherein the positioning protrusion (2012) is an elongated rectangular protrusion, two sides of the positioning protrusion (2012) are respectively provided with a guiding block (2011), the positioning groove (1022) is an elongated rectangular groove, and two sides of the positioning groove (1022) are respectively provided with a guiding groove (1023).

5. The electrical connection device with replaceable interface according to claim 3, wherein the clamping assembly comprises two buckles (203), the buckles (203) are respectively arranged on the side parts of the two ends of the second housing (201), the lower part of one side of each buckle (203) is provided with a pressing part (2031), the upper part of one side of each buckle (203) is provided with a buckle protrusion (2032),

two ends of the bottom surface of the first shell (102) are provided with an upper clamping groove (1025) and an upper mounting groove (1024);

a lower mounting groove (2013) and a second lower buckling through groove (2015) are formed in two ends of the top surface of the second shell (201), and a first lower buckling through groove (2014) is formed in the lower mounting groove (2013);

the side surfaces of the upper mounting groove (1024) and the upper buckling groove (1025) are provided with buckling grooves (1026),

the buckling groove (1026) forms the clamping assembly matching piece;

a buckle protrusion (2032) of one buckle (203) passes through the second lower buckle through groove (2015) and is clamped with a catching groove (1026) of the upper buckle groove (1025);

and a buckle protrusion (2032) of the other buckle (203) passes through the first lower buckle through groove (2014) and is clamped with a clamping groove (1026) of the upper mounting groove (1024).

6. The electrical connector with replaceable interface of claim 5, characterized in that a base (202) is connected to the lower portion of the second housing (201), the base (202) has two ends having a snap-fit groove (2022), the lower end of the snap (203) is disposed in the snap-fit groove (2022), the width of the snap-fit groove (2022) is greater than the thickness of the lower end of the snap (203); a baffle plate (2021) is arranged beside the buckle mounting groove (2022), a spring positioning part (2034) is arranged on the other side of the buckle (203), a spring (204) is sleeved on the spring positioning part (2034), and the end part of the spring (204) is abutted against the baffle plate (2021).

7. The electrical connector with replaceable interface according to claim 5, wherein the snap protrusions (2032) are rectangular protrusions, at least two rows of the rectangular protrusions are provided, and the outer side of the pressing portion (2031) is provided with anti-slip lines (2033).

8. The electrical connection device with replaceable interface according to claim 6, wherein a plurality of supporting protrusions (2023) are disposed on an inner side of the baffle plate (2021), a through hole (2024) is disposed on the supporting protrusion (2023), two positioning posts (2017) and two threaded posts (2018) having threaded holes are disposed on an inner top surface of the second housing (201), the positioning posts (2017) are engaged with two of the through holes (2024), and the threaded posts (2018) are engaged with the rest of the supporting protrusions (2023) to press the main control board (205) together.

9. The electrical connection device of claim 8, wherein the electrical connection assembly comprises a socket (401), a plug (402), and a socket connection plate (403), the socket (401) being disposed in the upper mounting recess (1024), the socket connection plate (403) being connected to the electrical assembly at one end and to the socket (401) at the other end, the plug (402) being mounted in the lower mounting recess (2013).

10. An earphone adapter comprising an interchangeable interface electrical connection according to any one of claims 1 to 9.