TWI384706B - Earphone plug with mode switching function - Google Patents

Description

Headphone plug with mode switching function

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a headphone plug, and more particularly to an earphone plug having a mode switching function for selectively switching between a three-electrode and a four-electrode different conduction mode for selective use on a mobile phone or a music playing device.

The earphone is an indispensable accessory for providing sound information in the portable electronic product, and the plug type of the earphone is divided into the appearance of the conventional three-polar earphone plug 1 as shown in the first figure, and as shown in the second figure. The conventional four-polar earphone plug 2 is shown in the figure, which is applicable to portable electronic products with different functions.

The three-polar earphone plug 1 includes three electrodes 1a, 1b, 1c for transmitting a left channel signal, a right channel signal, and a ground signal, respectively, so that the earphone plug 1 can be applied to a personal portable music device such as an MP3. Stereo music information. However, the earphone plug 1 is only sound output due to its structural limitation, and cannot provide a radio receiving function, so that it cannot be used as a hands-free handset for a mobile phone.

The four-polarity earphone plug 2 includes four electrodes 2a, 2b, 2c, and 2d for transmitting a left channel signal, a right channel signal, a microphone signal, and a ground signal, respectively, so that the earphone plug 2 can be applied to a mobile phone. In order to avoid the application of the earphone; the opposite earphone plug 2 cannot be matched with the three-polar earphone socket because of its structure, so that the consumer must consider the polarity of the earphone plug when purchasing the earphone. Regardless of which type of earphone plug is selected, it can only be used with a single type of earphone socket, resulting in restrictions on the use of the earphone, so that consumers must purchase different types of earphone plugs in order to meet the needs of various electronic products, especially in action. Switching between products such as telephones and music devices will impose an economic burden.

In order to solve such a problem, an adapter has been used in the market as a four-polar earphone plug, so that the earphone plug can be applied to a three-polar earphone socket, thereby improving the use limit of the four-polar earphone plug. However, the fly in the ointment is that consumers still need to purchase adapters, and it is inevitable that they will cause loss of inconvenience.

In view of the above problems, an object of the present invention is to provide a headphone plug having a mode switching function, which includes a terminal and a switching device. The terminal has a plurality of electrodes for transmitting signals, the switching device is coupled to the terminal, and is switchable between the first mode and the second mode, so that some electrodes of the terminals are electrically connected together to achieve mode switching for different transmissions. Signal processing.

To achieve the above objective, the terminal of the present invention has a first electrode, a second electrode, a third electrode and a fourth electrode, and additionally includes a first conductive member and a second conductive member, and the switching device has an activity. The sleeve is disposed at the rear end of the terminal, and the movable sleeve has a metal piece for electrically connecting the metal piece to the first conductive member and the second conductive member when the earphone plug is switched from the first mode to the second mode. The corresponding third electrode and the fourth electrode are in a conducting state, and the earphone plug is switched from the four-electrode state to the three-electrode state, so that the earphone plug of the present invention can be applied to both the mobile phone and the music playing device.

In order to achieve the above purpose, the rear end of the terminal of the present invention is connected with a fixing sleeve, a plastic part is embedded between the fixing sleeve and the terminal, the plastic part has a pair of stopping blocks, and the movable sleeve is correspondingly provided with a pair of guiding grooves to limit the movable sleeve relative to each other. The rotational position of the plastic part.

In order to achieve the above object, the fixing sleeve of the present invention has a punctuation, and the movable sleeve is externally sleeved with a bushing having an indication area corresponding to the punctuation for use as an indicating position when the switching action is manipulated.

Hereinafter, an embodiment of the earphone plug having the mode switching function of the present invention will be described with reference to the drawings.

Please refer to the third figure, which is an external view of the earphone plug with the mode switching function of the present invention. The earphone plug 100 includes a terminal 10, a switching device 20, a fixing sleeve 30, and a wire 40.

Please refer to the fourth figure, which is an exploded view of the earphone plug with the mode switching function of the present invention. The terminal 10 is provided with a first electrode 11 , a second electrode 12 , a third electrode 13 , a fourth electrode 14 , and an insulating portion 15 connected to the rear of the fourth electrode 14 . The insulating portion 15 is connected from the left to the right. A first terminal slot 16, a second terminal slot 17, a hollow terminal portion 18 and a tail end 19 are provided, wherein the first terminal slot 16 and the second terminal slot 17 are respectively provided with a first conductive member 50 and A second conductive member 51 is clamped.

The first conductive member 50, the second conductive member 51, the terminal portion 18 and the tail end 19 serve as electrical contact portions for respectively respectively connecting the left channel signal line, the right channel signal line and the microphone signal inside the wire 40. The wire and the ground signal line (not shown) are soldered and connected, wherein the first electrode 11, the second electrode 12, the third electrode 13, and the fourth electrode 14 are respectively connected to the first conductive member 50 and the second conductive member. 51. The terminal portion 18 and the tail end 19 are electrically connected. The main structural features of the terminal 10 of the present invention are the four-polarity terminals of the prior art, and therefore will not be further described herein.

The switching device 50 includes a movable sleeve 21, which is provided with a pair of hollow guiding grooves 22 in a lateral position, and a pair of card slots 23 are disposed at an axial position of the outer peripheral edge, and the locking slot 23 is in communication with the guiding slot 22, wherein The inner periphery of the movable sleeve 21 is provided with a coupling groove 21a, and a positioning portion 21b is recessed on both sides of the coupling groove 21a. The switching device 20 further includes a bushing 24 having a pair of latching blocks 25 on the inner edge surface for engaging with the latching slots 23 of the movable sleeve 21, and an outer peripheral edge of the bushing 24 is provided with an indicating area 26; The metal piece 27 having a resilient shape is fixed to the coupling groove 21a of the movable sleeve 21 by mechanical or other equivalent manner, and the metal piece 27 is provided with a first contact 271 and a second contact. 272 and the leg portions 273 on both sides, the leg portion 273 can be coupled to the positioning portion 21b.

One end of the fixing sleeve 30 is provided with the wire 40 extending, and the other end is provided with a plastic member 31. The plastic member 31 is embedded between the insulating portion 15 of the terminal 10 and the fixing sleeve 30, and a first through hole 32 is provided at one end of the outer peripheral edge. a second through hole 33 and a pair of stoppers 34. When the plastic member 31 is placed on the insulating portion 15 of the terminal 10, the first through hole 32 and the second through hole 33 can be combined with the first conductive member 50 and the second conductive member. 51, the first conductive member 50 and the second conductive member 51 are partially exposed on the outer periphery of the plastic member 31; the fixed sleeve 30 is provided with the movable sleeve 21, and the stopper 34 of the fixing sleeve 30 is placed on the movable sleeve 21 The guiding groove 22 is used as a limitation of displacement when the movable sleeve 21 is laterally rotated relative to the fixed sleeve 30. When the movable sleeve 21 is rotated relative to the fixed sleeve 30, the metal piece 27 of the movable sleeve 21 is selectively contacted with the first conduction. The piece 50 and the second conductive member 51. By engaging the block 25 of the bushing 24 with the slot 23 of the movable sleeve 21, the user can directly manipulate the bushing 24 to drive the switching action of the movable sleeve 21. In addition, the outer surface of the fixing sleeve 30 is provided with a punctuation point 35, which is aligned with the indication area 26 of the bushing 24 for indicating the state position. For example, in the present invention, the two are separated into a first mode, and two The alignment is the second mode.

It is worth mentioning that a magnetic ring 60 is disposed inside the plastic member 31 for providing noise cancellation of the earphone plug 100.

Please refer to the fifth figure, which is a transverse sectional view (1) of the earphone plug with mode switching function of the present invention. It is indicated that the earphone plug 100 is in the first mode, and the metal piece 27 of the movable sleeve 21 is away from the first conductive member 50 of the terminal 10 and is not in contact.

Please refer to the sixth figure, which is an axial sectional view (1) of the earphone plug with mode switching function of the present invention. Since the earphone plug 100 of the present invention is in the first mode, the first conductive member 50 and the second conductive member 51 are in an independent state, respectively, and the terminal 10 is connected to the left channel signal line and the right channel signal line of the wire 40, The microphone signal line and the ground signal line are connected, and the headphone plug 100 can be correspondingly applied to a headphone jack with a four-electrode type, especially a mobile phone with a voice call function. In particular, the inner periphery of the bushing 24 of the present invention is provided with an annular projection 251 which is positioned on the guiding groove 22 of the movable sleeve 21 as a stable positioning.

Please refer to the seventh figure, which is a transverse sectional view (2) of the earphone plug with mode switching function of the present invention. By manipulating the bushing 24 to drive the rotation of the movable sleeve 21 to switch the earphone plug 100 from the first mode to the second mode, the metal piece 27 of the movable sleeve 21 can be brought into contact with the first conductive member 50.

Please refer to the eighth figure, which is an axial sectional view (2) of the earphone plug with mode switching function of the present invention. Due to the displacement of the movable sleeve 21, the first contact 271 and the second contact 272 of the metal piece 27 can be respectively contacted with the first conductive member 50 and the second conductive member 51 to make the first conductive member 50 and the second conductive member The member 51 is electrically connected, so that the connected electrode forms a communication state, which will cause the microphone signal and the ground signal of the earphone connector 100 to be switched into a separate ground signal, and the earphone plug 100 can be correspondingly applied with the three electrodes. A type of headphone jack, especially a music player such as an MP3 player.

The switching device 20 of the present invention is switched in a rotating manner. However, the switching device 20 can also be used as a mode change by other equivalent or similar means, such as a sliding operation, etc., and is also within the technical scope of the present invention.

The earphone plug with the mode switching function of the present invention utilizes a switching device with a metal piece to abut the first conductive member and the second conductive member at the rear end of the terminal between the opposite terminal rotation actions, and Electrically connected, so that the earphone plug is switched from the first mode of the four electrodes (with two-channel signal, microphone signal and ground signal) to the second mode of the three electrodes (two-channel signal and ground signal), The earphone plug of the present invention can be applied to a music playing device having a three-electrode socket and a mobile phone having a four-electrode socket, and a headphone plug having a dual mode switching function for providing convenience in use of the earphone product. Consumer demand.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1. . . Headphone plug

1a. . . electrode

1b. . . electrode

1c. . . electrode

2. . . Headphone plug

2a. . . electrode

2b. . . electrode

2c. . . electrode

2d. . . electrode

100. . . Headphone plug

10. . . Terminal

11. . . First electrode

12. . . Second electrode

13. . . Third electrode

14. . . Fourth electrode

15. . . Insulation

16. . . First terminal slot

17. . . Second terminal slot

18. . . Terminal part

19. . . Tail end

20. . . Switching device

twenty one. . . Activity set

21a. . . Combined slot

21b. . . Positioning department

twenty two. . . Guide slot

twenty three. . . Card slot

twenty four. . . bushing

25. . . Block

251. . . Bump

26. . . Indicator area

27. . . Metal sheets

271. . . First contact

272. . . Second contact

273. . . Foot

30. . . Fixing sleeve

31. . . Plastic parts

32. . . First perforation

33. . . Second perforation

34. . . Stop block

35. . . punctuation

40. . . Wire

50. . . First conductor

51. . . Second conductor

60. . . Magnetic ring

The first picture shows the appearance of a conventional three-polar earphone plug.

The second picture shows the appearance of a conventional four-polar earphone plug.

The third figure is an external view of the earphone plug with the mode switching function of the present invention.

The fourth figure is an exploded view of the earphone plug with the mode switching function of the present invention.

The fifth figure is a transverse sectional view (1) of the earphone plug with the mode switching function of the present invention.

The sixth figure is an axial partial cross-sectional view (1) of the earphone plug with the mode switching function of the present invention.

The seventh figure is a transverse sectional view (2) of the earphone plug with the mode switching function of the present invention.

The eighth figure is an axial partial cross-sectional view (2) of the earphone plug with the mode switching function of the present invention.

100. . . Headphone plug

10. . . Terminal

11. . . First electrode

12. . . Second electrode

13. . . Third electrode

14. . . Fourth electrode

15. . . Insulation

16. . . First terminal slot

17. . . Second terminal slot

18. . . Terminal part

19. . . Tail end

20. . . Switching device

twenty one. . . Activity set

21a. . . Combined slot

21b. . . Positioning department

twenty two. . . Guide slot

twenty three. . . Card slot

twenty four. . . bushing

25. . . Block

26. . . Indicator area

27. . . Metal sheets

271. . . First contact

272. . . Second contact

273. . . Foot

30. . . Fixing sleeve

31. . . Plastic parts

32. . . First perforation

33. . . Second perforation

34. . . Stop block

35. . . punctuation

40. . . Wire

50. . . First conductor

51. . . Second conductor

Claims (11)

An earphone plug with a mode switching function, comprising: a terminal having a plurality of electrodes for transmitting signals; and a switching device coupled to the terminal and operable in a first mode and a second mode Switching between, and switching to one of the modes, the electrodes of the terminal are electrically connected together to achieve mode switching for different transmission signals. The earphone plug with a mode switching function according to claim 1, wherein the electrodes comprise a first electrode, a second electrode, a third electrode and a fourth electrode for respectively transmitting a left sound Channel signal, a right channel signal, a microphone signal and a ground signal. The earphone plug having a mode switching function according to the second aspect of the invention, wherein the terminal rear end clip has a first conductive member and a second conductive member, respectively connected to the third electrode and the fourth electrode. The earphone plug having a mode switching function according to claim 3, wherein the switching device comprises a metal piece for abutting between the first conductive member and the second conductive member in the switching mode, The first conductive member is electrically connected to the second conductive member. The earphone plug having a mode switching function according to claim 4, wherein the metal piece has a meandering shape and has a first contact and a second contact for respectively abutting the first conductive member And the second conductive member. The earphone plug with a mode switching function according to the fourth aspect of the invention, wherein the switching device comprises a movable sleeve, the metal piece is disposed in the movable sleeve, a plastic part is embedded at the rear end of the terminal, and the movable sleeve is rotated. Set on the plastic piece. The earphone plug having the mode switching function according to the sixth aspect of the invention, wherein the inner circumference of the movable sleeve is provided with a coupling groove for providing the metal sheet, and a positioning portion is recessed on both sides of the coupling groove. The metal piece is provided with two legs to be coupled to the positioning portion. The earphone plug having a mode switching function according to claim 6, wherein the plastic member comprises a first through hole and a second through hole to provide the first conductive member and the second conductive member protruding from the plastic Surface of the piece. The earphone plug with mode switching function according to claim 6, wherein the movable sleeve is laterally provided with a pair of guiding slots, and the plastic member includes a pair of stopping blocks corresponding to the guiding slot for limiting the The displacement of the movable sleeve relative to the plastic part. The earphone plug with a mode switching function according to claim 6 further includes a bushing sleeve disposed on the movable sleeve, and a pair of card slots are axially disposed on an outer circumference of the movable sleeve, and the bushing is disposed correspondingly. The block is configured to cause the bushing to drive the movable sleeve to rotate. The earphone plug having the mode switching function according to claim 10, wherein the plastic component is disposed on a fixing sleeve, the fixing sleeve provides a wire penetration, and the fixing sleeve is provided with a punctuation to the lining One of the outer peripheral setting indicates that the area corresponds to the fit.