CN113132844B - Earphone plug fastening device - Google Patents
Earphone plug fastening device Download PDFInfo
- Publication number
- CN113132844B CN113132844B CN202110317216.0A CN202110317216A CN113132844B CN 113132844 B CN113132844 B CN 113132844B CN 202110317216 A CN202110317216 A CN 202110317216A CN 113132844 B CN113132844 B CN 113132844B
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- China
- Prior art keywords
- air
- air suction
- shell
- cavity
- earphone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 8
- 235000017491 Bambusa tulda Nutrition 0.000 description 8
- 241001330002 Bambuseae Species 0.000 description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 8
- 239000011425 bamboo Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 230000000740 bleeding effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1033—Cables or cables storage, e.g. cable reels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
Abstract
The invention relates to the technical field of audio equipment and discloses an earphone plug fastening device which comprises a shell, wherein an inner liner is fixedly connected to the inner side of the shell, a sucker is fixedly connected to the lower end of the shell, an air suction cylinder is movably sleeved in the middle of an inner cavity of the shell, an air suction hole for communicating the outside with the middle of the inner cavity of the shell is formed in the lower end of the shell, and a limit groove is formed in the upper end of the inner liner. The invention is provided with the negative pressure fastening mechanism, so that when the earphone plug is connected with the jack of the computer and other equipment, but the jack is longer, the earphone jack is provided with the fastening device, after the earphone is inserted, the sucker is tightly attached to the surface of the computer and other equipment, then the air suction cylinder is firstly pressed down and then is pulled out upwards, the air storage cavity is sucked into the air suction cylinder through the vent hole which is communicated from outside to inside in a unidirectional way, the lower end of the air suction cylinder is provided with the negative pressure cavity, and the fastening device always applies downward pressure to the earphone, so that the plug is connected and fastened with the jack.
Description
Technical Field
The invention relates to the technical field of audio equipment, in particular to an earphone plug fastening device.
Background
The earphone plug is an electrical element for connecting the earphone with the equipment needing to release the audio, is generally cylindrical, and is inserted into an earphone jack special for the equipment such as a computer, so that the audio played by the equipment such as the computer cannot be leaked outwards, and noise is reduced.
After equipment such as traditional earphone plug inserts computer, because jack fastening uses for a long time, it is comparatively loose to lead to jack and earphone plug to be connected for the unable normal work of earphone, generally need apply certain pressure to the plug to earphone hole department, just can make earphone plug and computer normally be connected, and under some special circumstances, still need to deflect the plug to one side, and then improve the connection effect of plug and jack, thereby guarantee the normal use of earphone, but often need dismantle the computer with the change of earphone jack, and nonprofessional personnel is difficult for carrying out the computer and dismantle.
Disclosure of Invention
Aiming at the defects of the prior earphone plug in the use process, the invention provides an earphone plug fastening device which has the advantages of negative pressure fastening and directional deflection, and solves the technical problems in the prior art.
The invention provides the following technical scheme: the utility model provides an earphone plug fastener, includes the casing, the inboard fixedly connected with inner liner of casing, the lower extreme fixedly connected with sucking disc of casing, the middle part activity of casing inner chamber has cup jointed a section of thick bamboo of bleeding, the suction hole with external and casing inner chamber middle part intercommunication is seted up to the lower extreme of casing, the spacing groove has been seted up to the upper end of inner liner, the lower extreme swing joint of section of thick bamboo of bleeding has a piston cylinder, the lower extreme of section of thick bamboo inner chamber of bleeding is provided with the gas storage chamber, the left side fixedly connected with dog of section of thick bamboo inner chamber of bleeding, the upper end swing joint of section of thick bamboo inner chamber of bleeding has the air block, the upper end fixedly connected with driving lever of air block one side, the middle part activity of section of thick bamboo of bleeding has cup jointed a spacing section of thick bamboo, and one side of spacing section of thick bamboo has seted up the spacing hole with the air storage chamber and the same spacing hole of casing inner chamber middle part intercommunication, and the air vent is the unidirectional opening by outside.
Preferably, the lower end of the air extraction cylinder is provided with a telescopic cavity at the position of the limiting cylinder, and a corrugated pipe is movably arranged in the middle of the telescopic cavity.
Preferably, the middle part of the left side of the air compressing block is fixedly connected with a spring, and the other end of the spring is fixedly connected with the upper surface of the middle part of the stop block.
The invention has the following beneficial effects:
1. the invention is provided with the negative pressure fastening mechanism, so that when the earphone plug is connected with the jack of the computer and other equipment, but the jack is longer, the earphone jack is provided with the fastening device, after the earphone is inserted, the sucker is tightly attached to the surface of the computer and other equipment, then the air suction cylinder is firstly pressed down and then is pulled out upwards, the air storage cavity is sucked into the air suction cylinder through the vent hole which is communicated from outside to inside in a unidirectional way, the lower end of the air suction cylinder is provided with the negative pressure cavity, and the fastening device always applies downward pressure to the earphone, so that the plug is connected and fastened with the jack.
2. According to the invention, the directional deflection mechanism is arranged, so that when the device is used, one side with the corrugated pipe is rotated to the back surface of the earphone plug in the deflection direction required by the earphone plug, after the fastening connection of the earphone plug is completed, the deflector rod is pushed clockwise by a certain force, the corrugated pipe extends outwards in a larger amplitude under the cooperation of the air compressing block and the stop block, and a certain thrust is applied to the upper end of the earphone plug in the limit groove, so that the earphone plug deflects in the deflection direction required by the earphone plug, and the connection efficiency of the earphone plug and the jack is further ensured.
Drawings
FIG. 1 is a schematic cross-sectional view of the structure of the present invention;
FIG. 2 is a schematic top cross-sectional view of the structure of the present invention;
FIG. 3 is a schematic view of a structural restraint barrel of the present invention;
FIG. 4 is an enlarged schematic view of the structure of the present invention at A in FIG. 1.
In the figure: 1. a housing; 2. an inner liner layer; 3. a suction cup; 4. a suction cylinder; 5. an air suction hole; 6. a limit groove; 7. a piston cylinder; 8. a gas storage chamber; 9. a stop block; 10. an air pressing block; 11. a deflector rod; 12. a limiting cylinder; 13. a bellows; 14. a telescopic chamber; 15. a vent hole; 16. and (3) a spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, an earphone plug fastening device comprises a housing 1, wherein an inner liner 2 is fixedly connected to the inner side of the housing 1, a sucker 3 is fixedly connected to the lower end of the housing 1, an air suction tube 4 is movably sleeved in the middle of the inner cavity of the housing 1, an air suction hole 5 for communicating the outside with the middle of the inner cavity of the housing 1 is formed in the lower end of the housing 1, a limit groove 6 is formed in the upper end of the inner liner 2, a piston tube 7 is movably connected to the lower end of the air suction tube 4, an air storage cavity 8 is arranged at the lower end of the inner cavity of the air suction tube 4, a stop block 9 is fixedly mounted on the left side of the inner cavity of the air suction tube 4, an air compression block 10 is movably connected to the upper end of one side of the air compression block 10, a deflector 11 is fixedly connected to the middle of the air suction tube 4, a limit tube 12 is movably sleeved in the middle of the air suction tube 4, and a limit hole with the same diameter as the deflector 11 is formed in one side of the limit tube 12, the lower end of the air suction cylinder 4 is provided with a vent hole 15 which is communicated with the air storage cavity 8 and the middle part of the inner cavity of the shell 1, the vent hole 15 is a one-way hole which is communicated from outside to inside, after a plug is inserted into the middle part of the fastening device, the air suction cylinder 4 is connected with equipment to be connected through the suction disc 3, so that air in the shell 1 flows into the air storage cavity 8 through the vent hole 15 which is communicated from outside to inside in a one-way, after the air suction cylinder is pulled upwards, the middle part of the suction disc 3 and the lower end of the air suction cylinder 4 form a negative pressure cavity, so that the fastening device applies downward pressure to the plug, the plug is tightly contacted with the jack, the air pressing block 10 synchronously rotates clockwise through pulling the deflector rod 11 clockwise, and the air in the air storage cavity 8 flows into the piston cylinder 7 under the cooperation of the stop 9, so that the piston cylinder 7 stretches out in the limit groove 6, and the air suction cylinder 4 is limited.
Wherein, through setting up the inner liner 2 that the material is rubber to set up the bottom surface of inner liner 2 slightly higher than the bottom surface of earphone plug, make when cup jointing fastener on the plug, can embolia the plug easily through inwards extrusion inner liner 2, and ensured when fastener normally works, the plug can receive the decurrent pressure that makes it all the time, thereby further ensured the negative pressure fastening effect through the device.
The lower end of the air extraction cylinder 4 is provided with a telescopic cavity 14 at the position of the limit cylinder 12, the middle part of the telescopic cavity 14 is movably provided with a corrugated pipe 13, and when the push rod 11 is pushed clockwise, a large thrust is applied by firstly adjusting the direction of the corrugated pipe 13 to a plug needing directional deflection, so that the corrugated pipe 13 stretches out in the telescopic cavity 14 in a large extent under the cooperation of the air pressing block 10 and the stop block 9, and generates a large thrust to the upper end of the plug, the plug deflects towards the required direction, and the push rod 11 is limited by the limit cylinder 12, so that the plug is deflected continuously, and the connection efficiency of the plug and the jack is further ensured.
The middle of the left side of the air compressing block 10 is fixedly connected with a spring 16, the other end of the spring 16 is fixedly connected with the upper surface of the middle of the stop block 9, under the action of the movable connection of the spring 16 on the left side of the air compressing block 10 and the upper surface of the stop block 9, when a plug needs to be disassembled, only the limit cylinder 12 is required to be moved upwards, the deflector rod 11 can freely move, the deflector rod 11 is moved anticlockwise again, the air compressing block 10 synchronously rotates anticlockwise, and the spring 16 is compressed inwards, so that under the action of increasing the space in the air storing cavity 8, a negative pressure cavity is formed in the air storing cavity 8, the corrugated pipe 13 and the piston cylinder 7 are sucked inwards, the air extracting cylinder 4 can move downwards, the plug is separated from the jack, and the problem that the plug cannot be disassembled due to the friction force received by the limit cylinder 12 when the plug needs to be disassembled is avoided.
The right end push block of the corrugated pipe 13 is magnetically connected with the outer end of the inner limit cylinder 12, so that the rapid separation of the right end push block of the corrugated pipe 13 and the limit cylinder 12 after the corrugated pipe 13 is greatly stretched out by the negative pressure fastening mechanism and the directional deflection mechanism is ensured.
The application method of the invention is as follows: inserting an earphone plug from the upper end of the fastening device to the middle part of the fastening device, enabling the lining layer 2 to be in contact with the upper surface of the earphone plug, and then inserting the earphone plug into an earphone jack of a computer and other equipment;
negative pressure fastening: after the plug is inserted into the jack, the sucker 3 is tightly contacted with the upper surface of the connecting device, then the air suction cylinder 4 is pressed downwards, so that air at the lower end of the air suction cylinder 4 flows into the air storage cavity 8 through the vent hole 15 which is communicated from outside to inside in a unidirectional way, the air pressure in the air storage cavity 8 is slightly increased, the air suction cylinder 4 is pulled upwards, the air in the sucker 3 is pumped into the cavity at the lower end of the air suction cylinder 4 through the air suction hole 5, the middle part of the sucker 3 forms a negative pressure cavity, so that the plug is always pressed by the pressure above the jack, then the deflector 11 is rotated clockwise, the air compression block 10 pushes the air in the air storage cavity 8 to push the piston cylinder 7 out to the middle part, the air is stretched into the limit groove 6, and the limit cylinder 12 is moved downwards, so that the deflector 11 is limited by the limit hole, and the plug is continuously pressed downwards and fastened above the jack;
directional deflection: when the jack needs to deflect to one side to be communicated, one side with the corrugated pipe 13 is rotated to the back of the earphone plug in the required deflection direction, then after negative pressure fastening is completed, a certain pressure is applied, the deflector rod 11 is continuously rotated clockwise, the air pressing block 10 is synchronously and continuously rotated, so that the air in the telescopic cavity 14 is continuously increased, the corrugated pipe 13 is outwards pushed out under the action of the air pressure, a certain pushing force is generated to the upper end of the plug in the limit groove 6, the earphone plug is gradually deflected, and after the plug deflects to the earphone to be communicated, the limit cylinder 12 is downwards moved, the deflector rod 11 is limited by the limit hole, and the earphone is ensured to be continuously deflected.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. An earphone plug fastening device, comprising a housing (1), characterized in that: the inner side of the shell (1) is fixedly connected with the inner liner (2), the lower end of the shell (1) is fixedly connected with the sucker (3), the middle part of the inner cavity of the shell (1) is movably sleeved with the air suction tube (4), the lower end of the shell (1) is provided with the air suction hole (5) which communicates the outside with the middle part of the inner cavity of the shell (1), the upper end of the inner liner (2) is provided with the limit groove (6), the lower end of the air suction tube (4) is movably connected with the piston tube (7), the lower end of the inner cavity of the air suction tube (4) is provided with the air storage cavity (8), the left side of the inner cavity of the air suction tube (4) is fixedly provided with the stop block (9), the upper end of the inner cavity of the air suction tube (4) is movably connected with the air compression block (10), the upper end of one side of the air compression block (10) is fixedly connected with the deflector rod (11), the middle part of the air suction tube (4) is movably sleeved with the limit tube (12), one side of the limit tube (12) is provided with the limit hole which has the same diameter as the deflector rod (11), the lower end of the air suction tube (4) is movably connected with the air storage cavity (15), and the air storage cavity (15) is communicated with the air storage cavity (15) from the inner cavity (1) to the air storage cavity to the outside.
The lower end of the air extraction cylinder (4) is provided with a telescopic cavity (14) at the position of the limiting cylinder (12), and a corrugated pipe (13) is movably arranged in the middle of the telescopic cavity (14).
2. A headset plug fastening device according to claim 1, wherein: the middle part of the left side of the air pressing block (10) is fixedly connected with a spring (16), and the other end of the spring (16) is fixedly connected with the upper surface of the middle part of the stop block (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317216.0A CN113132844B (en) | 2021-03-25 | 2021-03-25 | Earphone plug fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317216.0A CN113132844B (en) | 2021-03-25 | 2021-03-25 | Earphone plug fastening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113132844A CN113132844A (en) | 2021-07-16 |
| CN113132844B true CN113132844B (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110317216.0A Active CN113132844B (en) | 2021-03-25 | 2021-03-25 | Earphone plug fastening device |
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| Country | Link |
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| CN (1) | CN113132844B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833902B (en) * | 2021-10-26 | 2022-05-06 | 宣博精工科技(南通)有限公司 | Valve component of hydrogen energy automobile hydrogen storage device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3029608U (en) * | 1996-03-29 | 1996-10-01 | 株式会社ミヨシ | Earphone microphone for mobile phones |
| CN205004521U (en) * | 2015-08-26 | 2016-01-27 | 深圳君泽电子有限公司 | Earphone connector and mobile electronic equipment |
| CN206533507U (en) * | 2017-01-10 | 2017-09-29 | 江西天键电声有限公司 | Earphone horn cover sucker and earphone horn cover paste net equipment automatically |
| CN207165852U (en) * | 2017-08-09 | 2018-03-30 | 惠州市成达电子有限公司 | A kind of headset plug |
| CN207235048U (en) * | 2017-08-18 | 2018-04-13 | 江西联创宏声万安电子有限公司 | A kind of waterproof earphones |
| CN209150396U (en) * | 2019-02-02 | 2019-07-23 | 温州明衡电子科技有限公司 | A kind of novel earphone socket |
| CN209234024U (en) * | 2019-01-22 | 2019-08-09 | 惠州今科电子有限公司 | A kind of headset plug protective device |
| CN111804620A (en) * | 2020-06-22 | 2020-10-23 | 歌尔科技有限公司 | Automatic earphone testing device and automatic earphone testing method |
| CN111834785A (en) * | 2020-07-08 | 2020-10-27 | 李黎莎 | Anti-loosening device of socket |
| CN212011422U (en) * | 2020-03-29 | 2020-11-24 | 吉安县瑞丰达电子有限公司 | Fastening device for reinforcing earphone wire connector |
| CN212517739U (en) * | 2020-06-30 | 2021-02-09 | 陈煜羲 | Anti-loosening connecting assembly for computer signal transmission port |
-
2021
- 2021-03-25 CN CN202110317216.0A patent/CN113132844B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3029608U (en) * | 1996-03-29 | 1996-10-01 | 株式会社ミヨシ | Earphone microphone for mobile phones |
| CN205004521U (en) * | 2015-08-26 | 2016-01-27 | 深圳君泽电子有限公司 | Earphone connector and mobile electronic equipment |
| CN206533507U (en) * | 2017-01-10 | 2017-09-29 | 江西天键电声有限公司 | Earphone horn cover sucker and earphone horn cover paste net equipment automatically |
| CN207165852U (en) * | 2017-08-09 | 2018-03-30 | 惠州市成达电子有限公司 | A kind of headset plug |
| CN207235048U (en) * | 2017-08-18 | 2018-04-13 | 江西联创宏声万安电子有限公司 | A kind of waterproof earphones |
| CN209234024U (en) * | 2019-01-22 | 2019-08-09 | 惠州今科电子有限公司 | A kind of headset plug protective device |
| CN209150396U (en) * | 2019-02-02 | 2019-07-23 | 温州明衡电子科技有限公司 | A kind of novel earphone socket |
| CN212011422U (en) * | 2020-03-29 | 2020-11-24 | 吉安县瑞丰达电子有限公司 | Fastening device for reinforcing earphone wire connector |
| CN111804620A (en) * | 2020-06-22 | 2020-10-23 | 歌尔科技有限公司 | Automatic earphone testing device and automatic earphone testing method |
| CN212517739U (en) * | 2020-06-30 | 2021-02-09 | 陈煜羲 | Anti-loosening connecting assembly for computer signal transmission port |
| CN111834785A (en) * | 2020-07-08 | 2020-10-27 | 李黎莎 | Anti-loosening device of socket |
Non-Patent Citations (1)
| Title |
|---|
| 耳机插头注塑自动化设备的开发;黄漩;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》(第7期);B016-156 * |
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| CN113132844A (en) | 2021-07-16 |
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Effective date of registration: 20231107 Address after: Building B, No. 5 Lanyuan Road, Huayuan Industrial Zone, Binhai New Area, Tianjin, 300000-824 Applicant after: HIFIMAN (TIANJIN) TECHNOLOGY Co.,Ltd. Address before: 038500 area 1, cuijiayao village, beiwangzhuang sub district office, Shuocheng District, Shuozhou City, Shanxi Province Applicant before: Wang Chao |
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