CN107768902A - Headphone Jack Connector - Google Patents

Abstract

The present invention is applicable to the technical field of earphones, and provides an earphone socket connector comprising a plastic body with a hollow cavity, a terminal assembly installed in the plastic body, installed on the plastic body and electrically connected to the terminal assembly. A flexible circuit board for electrical connection to external devices and a sealant layer for sealing the flexible circuit board by dispensing glue. In the earphone socket connector, the terminal assembly is installed on the plastic body and the terminal assembly is electrically connected to the flexible circuit board, and the flexible circuit board is laid on the outside of the flexible circuit board by dispensing and sealing. The sealant layer is used to seal the flexible circuit board and the terminal assembly, so as to realize the waterproof function, greatly reduce the volume of the entire earphone socket connector, and facilitate the development of lightness and thinness.

Description

Headphone Jack Connector

technical field

The invention belongs to the technical field of earphones, in particular to an earphone socket connector.

Background technique

At present, in the waterproof mobile phones or other digital devices with waterproof function on the market, earphone socket connectors with a specification of 4 cores and a socket diameter of 3.5 mm are usually used. This type of headphone socket connector has a high waterproof function. Its structure is based on the conventional non-waterproof headphone structure with a sealing structure added, resulting in a much larger overall size than the conventional non-waterproof headphone socket. However, the large size limits the application of this type of product on some ultra-thin mobile terminal equipment, and the complicated process makes it difficult to popularize and apply this type of high-level waterproof connector.

Contents of the invention

The object of the present invention is to provide an earphone socket connector, aiming to solve the technical problem of the prior art that the earphone socket connector needs to adopt an excessively large sealing structure in order to achieve a higher waterproof function, resulting in an excessively large volume.

The present invention is achieved in this way, an earphone socket connector, comprising a plastic body with a hollow cavity, a terminal assembly installed in the plastic body, installed on the plastic body and electrically connected to the terminal assembly A flexible circuit board electrically connected to external devices and a sealant layer sealing the flexible circuit board with glue.

Further, the plastic body includes a fixed side for inserting the terminal assembly, and the fixed side is provided with a plurality of fixing holes communicating with the hollow cavity for fixed installation on the terminal assembly and for inserting An accommodating groove for the flexible circuit board is provided.

Further, the terminal assembly includes a ground terminal, a left audio channel terminal, a right audio channel terminal, a microphone connection terminal and a state detection terminal fixed in the fixing hole and electrically connected to the flexible circuit board.

Further, the ground terminal, the left audio channel terminal, the right audio channel terminal, the microphone connection terminal and the state detection terminal are exposed in the fixing hole for soldering with the flexible circuit board.

Further, the microphone connection terminal includes a first contact elastic piece and a second contact elastic piece welded together, the first contact elastic piece includes a main body part arranged side by side with the second contact elastic piece, along the main body part toward the One side of the flexible circuit board protrudes for soldering, and an extension pin protrudes along one side of the main body and protrudes from one side of the hollow cavity.

Further, the plastic body includes a body part with a hollow cavity and the fixed side, and an interface part protruding and extending along one side of the body part, and the interface part is provided with a guide that communicates with the hollow cavity. a through hole, and a fitting groove for fitting the extension pin is provided on the inner wall of the through hole.

Further, the plastic body also includes fixing lugs protruding and extending along both sides of the body to be fixed on external equipment.

Further, the earphone socket connector further includes a sealing ring sleeved on the outside of the interface part.

Further, the outer surface of the sealant layer is flush with the outer surface of the plastic body.

Compared with the prior art, the technical effect of the present invention is: the earphone socket connector installs the terminal assembly on the plastic body and electrically connects the terminal assembly to the flexible circuit board, and seals it by dispensing glue. The sealant layer is laid on the outside of the flexible circuit board to seal the flexible circuit board and the terminal assembly, so as to realize the waterproof function, greatly reduce the volume of the entire earphone socket connector, and facilitate thinning develop.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments of the present invention or in the description of the prior art. Obviously, the accompanying drawings described below are only illustrations of the present invention For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a structural diagram of an earphone connector provided by an embodiment of the present invention;

Fig. 2 is an exploded view of the earphone connector in Fig. 1;

Fig. 3 is a structural diagram of the microphone connection terminal in Fig. 2 .

Explanation of reference signs:

10 Plastic body 20 terminal assembly 12 Body twenty two Ground terminal 120 Hollow cavity twenty four left channel terminal 124 fixed side 26 Right channel terminal 1240 Fixing hole 28 Microphone terminal 1242 Storage tank 282 first contact shrapnel 14 interface 2820 Main body 140 via hole 2822 welding part 144 Fitting groove 2824 extension pin 16 fixed lug 284 second contact shrapnel 50 sealing ring 29 Status detection terminal 40 sealant layer 30 flexible circuit board

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Please refer to FIG. 1 and FIG. 2 , the earphone socket connector provided by the embodiment of the present invention includes a plastic body 10 with a hollow cavity 120 , a terminal assembly 20 installed in the plastic body 10 , and a terminal assembly 20 installed on the plastic body 10 . It is also electrically connected to the terminal assembly 20 to be electrically connected to the flexible circuit board 30 of an external device (not shown), and the sealant layer 40 is dispensed to seal the flexible circuit board 30 .

The earphone socket connector provided by the embodiment of the present invention installs the terminal assembly 20 on the plastic body 10 and electrically connects the terminal assembly 20 to the flexible circuit board 30 , and seals the terminal assembly 20 on the plastic body 10 by dispensing and sealing. The sealant layer 40 is laid on the outer side of the flexible circuit board 30 to seal the flexible circuit board 30 and the terminal assembly 20, so as to realize the waterproof function, greatly reduce the volume of the entire earphone socket connector, and facilitate lightness and thinness. development.

In this embodiment, the sealant layer 40 is sealed by dispensing glue, and the glue is baked and cured to seal the flexible circuit board 30 on the plastic body 10 . Using the sealant layer 40 to seal the flexible circuit board 30 on the plastic body 10 greatly reduces the thickness of the entire earphone connector and reduces the volume of the earphone connector.

In this embodiment, the external device may be an electronic device such as a mobile terminal or a computer.

Please refer to FIG. 1 and FIG. 2 , further, the plastic body 10 includes a fixed side 124 for inserting the terminal assembly 20 , and the fixed side 124 is provided with a plurality of hollow cavities 120 for fixing The fixing hole 1240 of the terminal assembly 20 and the accommodating groove 1242 for embedding the flexible circuit board 30 are installed. The terminal assembly 20 is plugged into the plastic body 10 by setting the fixing hole 1240 , and the flexible circuit board 30 is attached to the fixing side 124 by setting the accommodating groove 1242 , reducing the lamination thickness of the flexible circuit board 30 and the fixed side 124 , and facilitating the realization of sealing.

In this embodiment, the shape of the accommodating groove 1242 is the same as that of the flexible circuit board 30, and the fixing hole 1240 is provided at the bottom of the accommodating groove 1242, so as to realize the terminal assembly 20 is electrically connected to the flexible circuit board 30 .

1 and 2, further, the terminal assembly 20 includes a ground terminal 22 fixed in the fixing hole 1240 and electrically connected to the flexible circuit board 30, a left channel terminal 24, a right channel Terminal 26, microphone connection terminal 28 and state detection terminal 29. The number of the fixing holes 1240 is the same as the total number of the ground terminal 22, the left channel terminal 24, the right channel terminal 26, the microphone connection terminal 28 and the state detection terminal 29, and each of the fixing holes 1240 is distributed in the The groove bottom of the accommodating groove 1242 . That is, the ground terminal 22, the left channel terminal 24, the right channel terminal 26, the microphone connection terminal 28 and the state detection terminal 29 are respectively fixed in one of the fixing holes 1240, and the The ground terminal 22 , the left audio channel terminal 24 , the right audio channel terminal 26 , the microphone connection terminal 28 and the state detection terminal 29 are all provided with abutting elastic pieces against the wall of the corresponding fixing hole 1240 .

1 and 2, further, the ground terminal 22, the left channel terminal 24, the right channel terminal 26, the microphone connection terminal 28 and the state detection terminal 29 are exposed on the The fixing holes 1240 are welded to the flexible circuit board 30 . The ground terminal 22 , the left channel terminal 24 , the right channel terminal 26 , the microphone connection terminal 28 and the state detection terminal 29 are all provided with welding points exposed outside the fixing hole 1240 , The electrical connection of the flexible circuit board 30 is achieved by soldering each soldering point to a corresponding connection point of the flexible circuit board 30 .

Please refer to FIG. 2 and FIG. 3 , further, the microphone terminal 28 includes a first contact elastic piece 282 and a second contact elastic piece 284 that are welded together, and the first contact elastic piece 282 includes a connection with the second contact elastic piece 284 The main body part 2820 arranged side by side, the welding part 2822 protruding toward the side of the flexible circuit board 30 along the main body part 2820 for welding, and the welding part 2822 protruding along the side of the main body part 2820 and extending from the hollow cavity 120 Extension pins 2824 protruding from one side. The first contact elastic piece 282 and the second contact elastic piece 284 are welded together by laser welding at the welding portion 2822 to achieve fixing. Preferably, the main body part 2820, the welding part 2822 and the extension pin 2824 are integrally formed.

1 and 2, further, the plastic body 10 includes a body part 12 with a hollow cavity 120 and the fixed side 124, and an interface part 14 protruding along one side of the body part 12, so The interface portion 14 is provided with a conduction hole 140 communicating with the hollow cavity 120 , and an engaging groove 144 for engaging the extension pin 2824 is formed on the inner wall of the conduction hole 140 . Preferably, the body part 12 , the interface part 14 and the fixed side 124 are integrally formed. The hollow cavity 120 provided on the body part 12 and the conduction hole 140 provided on the interface part 14 communicate with each other, so that the extension pin 2824 protrudes from the hollow cavity 120 to the In the via hole 140 , and the fitting groove 144 is provided to attach the extension pin 2824 to the inner wall of the via hole 140 , so as to achieve electrical conduction with external devices.

Please refer to FIG. 1 and FIG. 2 , further, the plastic body 10 further includes fixing lugs 16 extending along two sides of the body portion 12 for fixing on external equipment. The two fixing lugs 16 are provided to facilitate fixing the entire earphone socket connector on the external device to be connected. Preferably, the two fixing lugs 16 are integrally formed with the body part 12 .

Please refer to FIG. 1 and FIG. 2 , further, the earphone jack connector further includes a sealing ring 50 sleeved on the outside of the interface portion 14 . The sealing ring 50 is provided on the interface portion 14 to realize the sealing and waterproofing between the earphone connector and the external equipment, so as to achieve the purpose of effective waterproofing. In other embodiments, the sealing ring 50 may be replaced by spot sealant, which is not limited thereto.

Please refer to FIG. 1 and FIG. 2 , further, the outer surface of the sealant layer 40 is flush with the outer surface of the plastic body 10 . By arranging the outer surface of the sealant layer 40 to be flush with the outer surface of the plastic body 10, so that the size of the entire earphone socket connector is roughly the same as the size of the plastic body 10, the earphone socket is guaranteed The volume of the connector does not increase.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (9)

1. a kind of earphone base connector, it is characterised in that including the plastic body with hollow cavity, be installed on the plastic cement sheet Terminal assemblies in body, it is installed on the plastic body and is electrically connected with the terminal assemblies to be electrically connected to external equipment Flexible PCB and dispensing seal the sealant layer of the flexible PCB.

2. earphone base connector as claimed in claim 1, it is characterised in that the plastic body includes being used for end described in grafting The affixed side of sub-component, the affixed side are fixedly installed in the terminal assemblies provided with multiple mutually passed to the hollow cavity Fixing hole and the storage tank for being embedded the flexible PCB.

3. earphone base connector as claimed in claim 2, it is characterised in that the terminal assemblies include being fixed on the fixation In hole and be electrically connected at the ground terminal of the flexible PCB, L channel terminal, R channel terminal, Mike's binding post and Status detection terminal.

4. earphone base connector as claimed in claim 3, it is characterised in that the ground terminal, the L channel terminal, institute State R channel terminal, Mike's binding post and the status detection terminal be exposed to the fixing hole with the flexible electrical Road plate is welded to each other.

5. earphone base connector as claimed in claim 3, it is characterised in that Mike's binding post includes being welded in one The first contact flat spring and the second contact flat spring, first contact flat spring includes being arranged side by side with second contact flat spring Main part, along the main part towards flexible PCB side protrusion for the weld part of welding and along the main body Portion side protrudes extension and the extension pin stretched out from the hollow cavity side.

6. earphone base connector as claimed in claim 5, it is characterised in that the plastic body include be provided with hollow cavity and The body of the affixed side and along the body side protrude extension interface portion, the interface portion be provided with it is described in The via hole that cavity body communicates, and it is provided with the embeded slot of the chimeric extension pin in the via hole inwall.

7. earphone base connector as claimed in claim 6, it is characterised in that the plastic body is also included along the body Both sides protrude extension to be fixed on the attaching clamp on external equipment.

8. earphone base connector as claimed in claim 6, it is characterised in that also close on the outside of the interface portion including being sheathed on Seal.

9. the earphone base connector as described in claim 1 to 8 any one, it is characterised in that the outer surface of sealant layer with The outer surface of the plastic body flushes.