Open headphone

Abstract

The utility model relates to the technical field of headphones, in particular to an open type headphone. The open type headphone comprises a headband, two sounding units and a sealing plug, sound production modules are mounted in the two sound production units and are used for producing audios; the two sounding units are respectively connected to two ends of the head-mounted device; wherein the sounding unit is provided with a hollow hole penetrating through one side close to an ear and an opposite outer side; the sealing plug can be detachably installed on the outer side, away from the ear, of the hollow hole from the hollow hole to seal the hollow hole. A noise reduction trigger switch is arranged in the hollow hole, the noise reduction trigger switch is triggered when the sealing plug is plugged into the hollow hole, and the open headphone actively reduces noise. According to the open type headphone, active noise reduction can be started while the sealing plug is plugged into the hollow hole, the starting control action of the active noise reduction is realized by using the action of plugging the sealing plug, and the active noise reduction mode of the open type headphone is simple and timely to start.

Description

Technical Field

[0001] The utility model relates to the technical field of headphones, in particular to an open-type headphone. Background Art

[0002] The headset is connected to two sound units through a headband, and both sound units are equipped with ear cups. When in use, the headband is worn on the user's head, and the two sound units cover the user's ears to listen to the audio. The clamping force of the headband ensures that the headset can be firmly worn on the user's head.

[0003] Currently, there are open-type headphones, in which the sound units of the open-type headphones are provided with through openings. When the two sound units are covered on the user's ears, the user listens to the audio while the ear canal is still connected to the outside world through the openings.

[0004] Such open-back headphones are also equipped with a closure piece to seal the opening. Once the closure piece seals the opening, it completely covers the ear, similar to a traditional closed-back headphone. However, when the user seals the opening with the closure piece, it indicates that the user needs to isolate external sound and use the open-back headphone as a traditional closed-back headphone. At this time, the open-back headphone's active noise reduction function should also be activated to provide a better audio experience. However, currently, when open-back headphones with the closure piece sealed as a traditional closed-back headphone are used, the active noise reduction mode is difficult to activate or is not activated in a timely manner. Utility Model Content

[0005] The embodiment of the present invention provides an open-type headphone to solve the problem in the prior art that the active noise reduction mode is difficult or delayed to start when the open-type headphone uses a sealing member to seal the opening and is used as a traditional closed-type headphone.

[0006] The utility model discloses an open-type headphone for wearing on a user's head, comprising a headband, two sound producing units, and a sealing plug; sound producing modules are installed in the two sound producing units, and the sound producing modules are used to produce audio; the two sound producing units are respectively connected to two ends of the headband; wherein the sound producing units are provided with a hollow hole penetrating a side close to the ear and an opposite outer side; the sealing plug can be detached from the hollow hole and installed on the outer side of the hollow hole away from the ear to seal the hollow hole;

[0007] A noise reduction trigger switch is provided in the hollow hole. When the sealing plug is inserted into the hollow hole, the noise reduction trigger switch is triggered, and the open-type headphones actively reduce noise.

[0008] Optionally, the noise reduction trigger switch is a Hall switch, and the closing plug is provided with a magnet corresponding to the Hall switch; when the closing plug is inserted into the hollow hole, the magnet is close to the Hall switch; or

[0009] The noise reduction trigger switch is a travel switch. When the closing plug is inserted into the hollow hole, the closing plug triggers the travel switch; or

[0010] The noise reduction trigger switch is a pressure switch. When the sealing plug is inserted into the hollow hole, the sealing plug squeezes the pressure switch; or

[0011] The noise reduction trigger switch is a capacitive touch switch, and the closing plug is made of a conductive material. When the closing plug is inserted into the hollow hole, the closing plug contacts the capacitive touch switch.

[0012] Optionally, the noise reduction trigger switch is a Hall switch; the Hall switch is mounted on the peripheral wall of the hollow hole, and the magnet is arranged on the side of the closing plug.

[0013] Optionally, the noise reduction trigger switch is a travel switch, which is mounted on the peripheral wall of the hollow hole. When the closing plug is inserted into the hollow hole, the side of the closing plug triggers the travel switch.

[0014] Optionally, the noise reduction trigger switch is a pressure switch, which is installed on the peripheral wall of the hollow hole, and an extrusion protrusion corresponding to the pressure switch is provided on the side of the closing plug; when the closing plug is inserted into the hollow hole, the extrusion protrusion squeezes the pressure switch.

[0015] Optionally, the noise reduction trigger switch is a capacitive touch switch, which is installed on the peripheral wall of the hollow hole, and a touch protrusion is provided on the side of the closing plug; when the closing plug is inserted into the hollow hole, the touch protrusion contacts the capacitive touch switch.

[0016] Optionally, a guide groove is provided on the peripheral wall of the hollow hole, and the guide groove extends in the extension direction of the hollow hole; a guide ridge is provided on the side of the closing plug, and the guide ridge extends in the axial direction of the closing plug; when the closing plug is inserted into the hollow hole, the guide ridge is embedded in the guide groove, and the closing plug triggers the noise reduction trigger switch.

[0017] Optionally, the noise reduction trigger switch is a photoelectric switch, and the sealing plug is made of an opaque material. When the sealing plug is inserted into the hollow hole, the sealing plug blocks the light emitted by the photoelectric switch.

[0018] Optionally, the photoelectric switch includes a light signal transmitting end and a light signal receiver, and the light signal transmitting end and the light signal receiver are arranged oppositely on the peripheral wall of the hollow hole.

[0019] Optionally, a main control circuit board is provided in the pronunciation unit, and the main control circuit board is electrically connected to the noise reduction trigger switch.

[0020] Compared to the prior art, the open-back headphones provided by the present invention have the following advantages: the open-back headphones of the present invention are provided with a noise reduction trigger switch in the hollow hole. When the sealing plug is inserted into the hollow hole, the noise reduction trigger switch is triggered. After the noise reduction trigger switch is triggered, the open-back headphones activate active noise reduction. In other words, the open-back headphones of the present invention activate active noise reduction simultaneously with the insertion of the sealing plug into the hollow hole. The activation and control of active noise reduction are achieved by the insertion of the sealing plug. The active noise reduction mode of the open-back headphones is activated simply and promptly, achieving the simultaneous activation of passive noise reduction (sealing the hollow hole with the sealing plug) and active noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0022] Figure 1 Schematic diagram of an open-type headphone according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the cooperation between the pronunciation unit and the sealing plug according to an embodiment of the utility model;

[0024] Figure 3 This is another schematic diagram of the coordination between the pronunciation unit and the sealing plug according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the separation of the sound unit and the sealing plug in an embodiment of the utility model;

[0026] Figure 5 This is another schematic diagram of the separation of the pronunciation unit and the sealing plug in an embodiment of the present invention.

[0027] The reference numerals in the figures are:

[0028] 1. Headband; 2. Sound unit; 21. Hollow hole; 3. Closure plug. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. Now, in conjunction with the accompanying drawings, a detailed description of the preferred embodiments of the present utility model will be given.

[0030] The embodiment of the present invention provides an open-type headset for wearing on the head of a user. Figures 1 to 5As shown, the open-back headphone includes a headband 1, two sound units 2, and a sealing plug 3. The two sound units 2 are equipped with sound modules for generating audio. The two sound units 2 are connected to the two ends of the headband 1. The sound units 2 are provided with a hollow hole 21 that passes through the side close to the ear and the opposite outside. The sealing plug 3 can be detachably installed from the hollow hole 21 to seal the hollow hole 21 on the outside of the hollow hole 21 away from the ear. A noise reduction trigger switch (not shown) is provided in the hollow hole 21. When the sealing plug 3 is inserted into the hollow hole 21, the noise reduction trigger switch is triggered, and the open-back headphone actively reduces noise.

[0031] When the user inserts the sealing plug 3 into the hollow hole 21, it indicates that the user needs to close the sound unit 2 at this time, so that the open-type headphone 1 can be used as a traditional closed-type headphone 1. The open-type headphone 1 of the present invention is provided with a noise reduction trigger switch in the hollow hole 21. When the sealing plug 3 is inserted into the hollow hole 21, the noise reduction trigger switch can be triggered. After the noise reduction trigger switch is triggered, the open-type headphone starts active noise reduction. That is, the open-type headphone 1 of the present invention can start active noise reduction at the same time as the sealing plug 3 is inserted into the hollow hole 21. The action of inserting the sealing plug 3 is used to realize the start-up control action of active noise reduction. The active noise reduction mode of the open-type headphone 1 is started simply and promptly, realizing the simultaneous activation of passive noise reduction (sealing the hollow hole 21 by the sealing plug 3) and active noise reduction.

[0032] Headphone noise reduction modes mainly include active noise reduction (ANC) and passive noise reduction. Passive noise reduction blocks external noise through physical isolation, such as the seal of earmuffs or earplugs, while active noise reduction eliminates noise through technical means. Active noise reduction technology uses the noise reduction microphone built into the headphones to capture ambient noise and generate opposite sound waves to cancel out the noise, thereby reducing the noise level.

[0033] Specifically, the design of the hollow hole 21 in the open-type headphone of the present invention allows more sound waves to escape from the rear of the sound unit 2, reducing sound reflection and echo around the ear. This results in a more natural sound. The sound unit 2 with the hollow hole 21 can provide a more natural and spacious sound field, giving the user the feeling of listening to live music. Furthermore, the open-type headphone of the present invention does not completely seal the ear, placing less pressure on the ear and making it more comfortable to wear. The hollow hole 21 allows air to circulate, quickly dissipating heat from the ear, preventing sweating and providing a comfortable fit.

[0034] Specifically, a main control circuit board is provided in the pronunciation unit 2, and the main control circuit board is electrically connected to the noise reduction trigger switch. When the noise reduction trigger switch is triggered by the closing plug 3, a control signal is generated, and the main control circuit board starts the active noise reduction mode after receiving the control signal. The active noise reduction mode includes feedforward noise reduction, feedback noise reduction and hybrid noise reduction. Specifically, for the specific electrical connection between the noise reduction trigger switch and the main control circuit board and the realization of the active noise reduction mode, conventional technology can be adopted. It is not an improvement point of the present invention and will not be repeated here. The pronunciation unit 2 is also provided with necessary components such as necessary speakers, active noise reduction microphones, batteries, etc., which can all be set up using conventional technology and will not be repeated here.

[0035] Specifically, regarding the specific implementation of the noise reduction trigger switch, in one embodiment, the noise reduction trigger switch is a Hall effect switch. The sealing plug 3 is equipped with a magnet corresponding to the Hall effect switch. When the sealing plug 3 is inserted into the hollow hole 21, the magnet approaches the Hall effect switch. A Hall effect switch is a sensor based on the Hall effect that can detect the presence and changes in a magnetic field and is commonly used for contactless position or displacement detection. Using a Hall effect switch as a noise reduction trigger switch can achieve highly sensitive and reliable detection. The Hall effect switch is electrically connected to the main control circuit board, detecting changes in the magnetic field and sending a signal to the main control circuit board. Specifically, a magnet can be embedded in the sealing plug 3. When the sealing plug 3 is inserted into the hollow hole 21, the magnet generates a magnetic field change that triggers the Hall effect switch. That is, as the user inserts the sealing plug 3 into the hollow hole 21, the magnet gradually approaches the Hall effect switch. Once the magnet enters the detection range of the Hall effect switch, the Hall effect switch detects the change in the magnetic field and sends a trigger signal to the main control circuit board. Upon receiving the trigger signal from the Hall effect switch, the main control circuit board activates active noise reduction mode, which involves activating the built-in active noise reduction microphone to capture ambient noise and generate opposing sound waves to cancel out the external noise. This solution uses a combination of Hall switch and magnet to achieve high-sensitivity detection of the position of the sealing plug 3, ensuring timely response of the active noise reduction function. The user only needs to simply insert the sealing plug 3 to control the activation of the active noise reduction function, which is easy and reliable to operate.

[0036] More specifically, the Hall switch is mounted on the peripheral wall of the hollow hole 21, and the magnet is disposed on the side of the closing plug 3. The specific electrical connection between the Hall switch and the main control circuit board and the implementation of the Hall switch detection function are conventional technical means and will not be elaborated here.

[0037] Regarding the specific implementation of the noise reduction trigger switch, in another embodiment, the noise reduction trigger switch is a travel switch, and when the closing plug 3 is inserted into the hollow hole 21, the closing plug 3 triggers the travel switch. The travel switch is a mechanical switch, which is commonly used to detect the movement or position change of an object. In this embodiment, the travel switch is used to detect the insertion action of the closing plug 3 and trigger the active noise reduction function. When the user inserts the closing plug 3 into the hollow hole 21, the closing plug 3 contacts the trigger point of the travel switch, triggering the action of the travel switch. After the travel switch is triggered, a trigger signal is sent to the main control circuit board. The main control circuit board starts the active noise reduction mode according to the received signal. The travel switch can be a conventional travel switch, and its specific electrical connection with the main control circuit board and the realization of the detection function are conventional technical means, which will not be repeated here.

[0038] Specifically, the travel switch is mounted on the peripheral wall of the hollow hole 21 . When the closing plug 3 is inserted into the hollow hole 21 , the side surface of the closing plug 3 triggers the travel switch.

[0039] Regarding the specific implementation of the noise reduction trigger switch, in another embodiment, the noise reduction trigger switch is a pressure switch, and when the closing plug 3 is inserted into the hollow hole 21, the closing plug 3 squeezes the pressure switch. A pressure switch is a sensor that can sense pressure changes and convert them into electrical signals. When the user inserts the closing plug 3 into the hollow hole 21, the closing plug 3 applies pressure to the pressure switch. After reaching the preset threshold, the pressure switch is triggered and sends a signal to the main control circuit board. After the main control circuit board receives the trigger signal of the pressure switch, it starts the active noise reduction mode. The pressure switch can be a conventional pressure switch, and its specific electrical connection with the main control circuit board and the realization of the detection function are conventional technical means, which will not be repeated here.

[0040] Specifically, the noise reduction trigger switch is a pressure switch, which is installed on the peripheral wall of the hollow hole 21. The side of the closing plug 3 is provided with an extrusion protrusion corresponding to the pressure switch; when the closing plug 3 is inserted into the hollow hole 21, the extrusion protrusion squeezes the pressure switch. When the user inserts the closing plug 3 into the hollow hole 21, the extrusion protrusion on the closing plug 3 aligns with and squeezes the pressure switch. After the pressure switch senses the pressure change, it sends an electrical signal to the main control circuit board. The extrusion protrusion can be just an arc shape slightly protruding from the surface of the side of the closing plug 3 to ensure the sealing of the closing plug 3 and that it can be normally inserted into the hollow hole 21. The provision of the extrusion protrusion can improve the triggering effect of the pressure switch.

[0041] Regarding the specific implementation of the noise reduction trigger switch, in another embodiment, the noise reduction trigger switch is a capacitive touch switch, and the closing plug 3 is made of a conductive material. When the closing plug 3 is inserted into the hollow hole 21, the closing plug 3 contacts the capacitive touch switch. The capacitive touch switch is a sensor that uses capacitance changes to detect contact actions. The closing plug 3 is made of a conductive material, and the capacitive touch switch can detect changes in capacitance when the closing plug 3 is inserted into the hollow hole 21. When the user inserts the closing plug 3 into the hollow hole 21, the closing plug 3 contacts the capacitive touch switch, resulting in a change in capacitance value. After the capacitive touch switch detects this change, a trigger signal is sent to the main control circuit board. After the main control circuit board receives the trigger signal of the capacitive touch switch, it starts the active noise reduction mode. The capacitive touch switch can use a conventional capacitive touch switch, and its specific electrical connection with the main control circuit board and the implementation of the detection function are conventional technical means, which will not be repeated here.

[0042] The capacitive touch technology of capacitive touch switches isn't limited to detecting human touch; it can also sense the proximity or touch of other conductive materials. Basic capacitive sensors can detect any conductive material, or any material with a dielectric constant different from air, including metals and plastics. The sealing plug 3 is made of a conductive material, such as plastic. A conductive coating, such as silver or copper, is applied to the surface of the sealing plug 3 to make it conductive.

[0043] Specifically, the capacitive touch switch is installed on the peripheral wall of the hollow hole 21, and a touch protrusion is provided on the side of the closing plug 3; when the closing plug 3 is inserted into the hollow hole 21, the touch protrusion contacts the capacitive touch switch. When the user inserts the closing plug 3 into the hollow hole 21, the touch protrusion on the closing plug 3 contacts the capacitive touch switch, resulting in a change in the capacitance value. After the capacitive touch switch detects the change in capacitance value, it sends an electrical signal to the main control circuit board. After receiving the trigger signal of the capacitive touch switch, the main control circuit board starts the active noise reduction mode. The touch protrusion can be only an arc shape slightly protruding from the surface of the side of the closing plug 3 to ensure the sealing of the closing plug 3 and that it can be normally inserted into the hollow hole 21. The setting of the touch protrusion can improve the triggering effect of the capacitive touch switch.

[0044] Furthermore, a guide groove (not shown) is provided on the peripheral wall of the hollow hole 21, extending in the direction of the hollow hole 21. A guide ridge (not shown) is provided on the side of the closing plug 3, extending in the axial direction of the closing plug 3. When the closing plug 3 is inserted into the hollow hole 21, the guide ridge engages with the guide groove, triggering the noise reduction trigger switch. The provision of the guide groove and guide ridge can limit the angle at which the closing plug 3 can be inserted into the hollow hole 21. When the noise reduction trigger switch is a Hall switch, a travel switch, a pressure switch, or a capacitive touch switch, the provision of the guide groove and guide ridge ensures that the closing plug 3 is inserted into the hollow hole 21 at the correct angle, ensuring accurate triggering of the noise reduction trigger switch.

[0045] Regarding the specific implementation of the noise reduction trigger switch, in another embodiment, the noise reduction trigger switch is a photoelectric switch, and the sealing plug 3 is made of an opaque material. When the sealing plug 3 is inserted into the hollow hole 21, the sealing plug 3 blocks the light emitted by the photoelectric switch. Specifically, the photoelectric switch includes a light signal transmitting end and a light signal receiver, which are arranged oppositely on the peripheral wall of the hollow hole 21. When the user inserts the sealing plug 3 into the hollow hole 21, the sealing plug 3 blocks the light emitted by the light signal transmitting end of the photoelectric switch, causing the light signal receiver to be unable to detect the light, thereby triggering the operation of the photoelectric switch. After the photoelectric switch is triggered, it sends an electrical signal to the main control circuit board. The main control circuit board activates the active noise reduction mode based on the received signal. The photoelectric switch can be a conventional photoelectric switch. Its specific electrical connection with the main control circuit board and the implementation of the detection function are conventional technical means and will not be repeated here. The sealing plug 3 can be made of a commonly used opaque plastic to ensure that it is opaque.

[0046] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Those skilled in the art may modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. An open-type headset for wearing on a user's head, characterized in that: The open-back headphone comprises a headband, two sound units, and a sealing plug; the two sound units are equipped with sound modules for generating audio; the two sound units are connected to the two ends of the headband, respectively; the sound units are provided with a hollow hole extending through a side close to the ear and an opposite side; the sealing plug is detachable from the hollow hole and mounted on the side of the hollow hole away from the ear to seal the hollow hole; A noise reduction trigger switch is provided in the hollow hole, and when the closing plug is inserted into the hollow hole, the noise reduction trigger switch is triggered, and the open-type headphone actively reduces noise.

2. The open-back headphone according to claim 1, wherein The noise reduction trigger switch is a Hall switch, and the sealing plug is provided with a magnet corresponding to the Hall switch; when the sealing plug is inserted into the hollow hole, the magnet is close to the Hall switch; or The noise reduction trigger switch is a travel switch, and when the closing plug is inserted into the hollow hole, the closing plug triggers the travel switch; or The noise reduction trigger switch is a pressure switch, and when the sealing plug is inserted into the hollow hole, the sealing plug squeezes the pressure switch; or The noise reduction trigger switch is a capacitive touch switch, and the sealing plug is made of a conductive material. When the sealing plug is inserted into the hollow hole, the sealing plug contacts the capacitive touch switch.

3. The open-back headphone according to claim 2, wherein: The noise reduction trigger switch is a Hall switch; the Hall switch is installed on the peripheral wall of the hollow hole, and the magnet is arranged on the side of the closing plug.

4. The open-back headphone according to claim 2, wherein: The noise reduction trigger switch is a travel switch, which is installed on the peripheral wall of the hollow hole. When the closing plug is inserted into the hollow hole, the side surface of the closing plug triggers the travel switch.

5. The open-back headphone according to claim 2, wherein: The noise reduction trigger switch is a pressure switch, which is installed on the peripheral wall of the hollow hole. An extrusion protrusion corresponding to the pressure switch is provided on the side of the closing plug; when the closing plug is inserted into the hollow hole, the extrusion protrusion squeezes the pressure switch.

6. The open-back headphone according to claim 2, wherein: The noise reduction trigger switch is a capacitive touch switch, which is installed on the peripheral wall of the hollow hole. A touch protrusion is provided on the side of the closing plug; when the closing plug is inserted into the hollow hole, the touch protrusion contacts the capacitive touch switch.

7. The open-back headphone according to any one of claims 2 to 6, characterized in that: A guide groove is provided on the peripheral wall of the hollow hole, and the guide groove extends in the extension direction of the hollow hole; a guide ridge is provided on the side of the closing plug, and the guide ridge extends in the axial direction of the closing plug; when the closing plug is inserted into the hollow hole, the guide ridge is embedded in the guide groove, and the closing plug triggers the noise reduction trigger switch.

8. The open-back headphone according to claim 1, wherein: The noise reduction trigger switch is a photoelectric switch, and the sealing plug is made of an opaque material. When the sealing plug is inserted into the hollow hole, the sealing plug blocks the light emitted by the photoelectric switch.

9. The open-back headphone according to claim 8, wherein The photoelectric switch includes a light signal transmitting end and a light signal receiver, and the light signal transmitting end and the light signal receiver are arranged opposite to each other on the peripheral wall of the hollow hole.

10. The open-back headphone according to any one of claims 1 to 6, characterized in that: The sounding unit is provided with a main control circuit board, and the main control circuit board is electrically connected to the noise reduction trigger switch.

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