Noise cancelling headphones

Abstract

To provide a headphone which improves the effect of noise canceling by attenuating noise at multiple levels. [Solution] The soundproofing part 61 of the headphone device has a sound deadening part 71 on the side closer to the headphone case 3 and a hole plate 81 with fine holes on the side farther from the headphone case. On the basis of blocking and attenuating noise through the headphone case, the sound deadening part first attenuates and damps noise, including low-frequency noise, that penetrates the headphone case. Then, the finer holes further attenuate the noise until the noise energy is consumed. With the above design, noise, including low-frequency noise, is attenuated in stages, achieving a noise canceling effect.

Description

[Technical field]

[0001] The present invention relates to the field of noise cancelling technology, in particular to noise cancelling headphones. [Background technology]

[0002] Noise is an unavoidable part of modern work and life. From a physiological point of view, any sound that interferes with people's rest, study, work, and listening to desirable sounds is called noise. When noise has a negative impact on people and the surrounding environment, it becomes noise pollution.

[0003] Noise canceling headphones are earphones that can reduce noise using a specific method. They are mainly used to meet the demand for reducing external noise in crowded environments, to protect hearing, or to obtain a better environmental atmosphere. From the viewpoint of noise measurement and control, low frequency noise is usually 500Hz or less (all low frequency noises mentioned in this application have this definition), mid frequency noise is 500Hz to 1000Hz, and high frequency noise is 1000Hz or more. Noise canceling for mid-high frequency noise is relatively easy, and usually sufficient effect can be obtained by simply blocking it. However, low frequency noise has high permeability, long reverberation time, and slow decay, making it difficult to perform isolated noise cancellation. Therefore, headphone type noise canceling products currently on the market mainly support mid-high frequency noise, and the noise canceling effect for low frequency noise is generally low. In the above problem, it is necessary to provide a headphone type noise canceling product that can also support low frequency noise. Summary of the Invention

[0004] The present invention provides a headphone type noise canceling product that can also deal with low frequency noise, the specific technical solutions are as follows:

[0005] A noise canceling headphone includes a headphone body including a headphone case that forms a storage space, and is characterized in that a soundproofing part is installed inside the headphone case, and the soundproofing part includes a soundproofing part on a side closer to the headphone case and a fine hole plate on a side farther from the headphone case. Furthermore, the fine hole plate can be fitted into the storage space of the headphone case, and the outer periphery of the fine hole plate fits the inner wall of the headphone case. Furthermore, the headphone body includes an earphone cover, which is attached to the opening of the headphone case. Furthermore, the earphone cover is attached to the opening of the headphone case via an earphone cover connection case. Furthermore, a soundproof pad is installed between the soundproof part and the earphone cover connection case. Furthermore, the soundproof pad is a sponge core wrapped with a cloth exterior. Furthermore, the fine hole plate is disposed outside the storage space of the headphone case, and the soundproofing part is disposed inside the storage space of the headphone case. The soundproofing part is connected to the headphone case via the fine hole plate or the soundproofing part. Furthermore, the headphone body also includes an earphone cover, and the earphone cover is attached to a fine hole plate. In addition, a soundproof pad is installed between the earphone cover and the fine hole plate. Furthermore, the soundproof pad is a sponge core wrapped with a cloth exterior. Furthermore, the contour surface of the sound deadening component facing the headphone case is gradually raised from the outside toward the inside, forming a curved surface. Furthermore, the curved surface matches the inner contour surface of the headphone case. Furthermore, a soundproof inner case is disposed between the headphone case and the soundproof component. Furthermore, the soundproof inner case has minute holes formed in the wall of the inner case on the side closer to the headphone case. Furthermore, a soundproof sponge is placed between the soundproof inner case and the soundproof parts. Furthermore, there are a number of micro-perforations on the micro-hole plate, each having a diameter of 0.5 mm to 0.8 mm. Furthermore, the inside of the headphone case is a hard shell and the outside is wrapped in soft rubber. Furthermore, the noise cancelling headphones also include a connection structure and two headphone bodies at both ends of the connection structure. Furthermore, the soundproofing part is a honeycomb-shaped soundproofing part, the sound deadening part is a honeycomb-shaped sound deadening part, and the fine hole plate is a first fine hole plate. The honeycomb-shaped soundproofing part is composed of a honeycomb-shaped sound deadening part on the side closer to the headphone case and a first fine hole plate on the side farther from the headphone case. The honeycomb-shaped sound deadening part has a plurality of holes. The first fine hole plate is provided with a number of a plurality of holes and one-to-one micro-perforations. Furthermore, the plurality of holes are arranged in series. Furthermore, the first fine hole plate has a plurality of truncated cones higher than the bottom surface, the truncated cones correspond one-to-one to the plurality of holes, and a micro-perforation is provided in the center of the truncated cone, which is connected to the plurality of holes. Furthermore, the multiple holes are also provided with micro-perforations on the side closer to the headphone case. Furthermore, the soundproofing part is a soundproofing part of a spiral body, and the sound-deadening part is a sound-deadening part of a spiral pipe. The fine hole plate is a second fine hole plate. The soundproofing part of the spiral body is composed of a sound-deadening part of a spiral pipe on the side closer to the headphone case and a second fine hole plate on the side farther from the headphone case. The sound-deadening part of the spiral pipe has a plurality of spiral pipes. The second fine hole plate is provided with fine holes in one-to-one correspondence with a plurality of spiral pipe channels. Furthermore, the plurality of spiral pipes are arranged in series. Furthermore, the soundproofing component is a spiral soundproofing component, the sound deadening component is a spiral sound deadening component, and the fine hole plate is a third fine hole plate. The soundproofing component of the spiral body is composed of a spiral sound deadening component on the side closer to the headphone case and a third fine hole plate on the side farther from the headphone case. The spiral sound deadening component is wound with an axis perpendicular to the winding side plate of the third fine hole plate. A plurality of micro-perforations are provided on the third fine hole plate. Furthermore, the surface of the spiral sound absorbing component is rough. Furthermore, the micro holes are provided in the gaps formed between two adjacent rolled side plates, and the perforation rate of the micro holes in the gaps is in the range of 1% to 5%.

[0006] The present invention provides a soundproofing part structure that is composed of a soundproofing part on the side closer to the headphone case and a fine hole plate on the side closer to the earphone cover inside the headphone case. In blocking and attenuating noise through the headphone case, the soundproofing part first attenuates and damps the noise penetrating the headphone case, including low-frequency noise, and then attenuates again through the fine holes until the noise energy is consumed. Based on the above, the present invention attenuates noise stepwise in multiple levels, cancels noise, and attenuates noise stepwise including low-frequency noise, thereby achieving a good noise canceling effect. On the other hand, the present invention is based on the above structure, and installs a soundproofing inner case or soundproofing sponge between the soundproofing part and the headphone case, or installs a soundproofing pad between the earphone cover and the soundproofing part, thereby attenuating noise stepwise in multiple levels and further improving the effect of noise canceling. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is an explanatory diagram of the overall effect of the headphones according to the present invention. [Diagram 2] 1 is an exploded view of a headphone structure according to a first embodiment of the present invention; [Diagram 3] FIG. 1 is an explanatory diagram 1 of a honeycomb-shaped soundproofing component structure according to a first embodiment of the present invention. [Figure 4] FIG. 2 is an explanatory diagram 2 of a honeycomb-shaped soundproofing component structure according to a first embodiment of the present invention. [Diagram 5] FIG. 3 is an explanatory diagram 3 of a honeycomb-shaped soundproofing component structure according to a first embodiment of the present invention. [Figure 6] FIG. 2 is an exploded view of a headphone structure according to a second embodiment of the present invention. [Figure 7] FIG. 1 is an explanatory diagram 1 of a spiral soundproofing part structure according to a second embodiment of the present invention. [Figure 8] FIG. 2 is an explanatory diagram 2 of a spiral soundproofing component structure according to a second embodiment of the present invention. [Figure 9] FIG. 11 is an exploded view of a headphone structure according to a third embodiment of the present invention. [Figure 10] FIG. 1 is an explanatory diagram 1 of a soundproofing part structure of a spiral wound body according to a third embodiment of the present invention. [Figure 11] FIG. 2 is an explanatory diagram 2 of a soundproofing part structure of a spiral wound body according to a third embodiment of the present invention. [Figure 12] FIG. 3 is an explanatory diagram 3 of a soundproofing part structure of a spiral body according to a third embodiment of the present invention. [Figure 13] FIG. 4 is a curve diagram of noise canceling data of the first embodiment of the present invention. [Figure 14] FIG. 11 is a curve diagram of noise canceling data of the second embodiment of the present invention. [Figure 15] FIG. 13 is a curve diagram of noise canceling data of the third embodiment of the present invention. [Figure 16] 1 is a curve diagram showing noise canceling data of test methods 5, 10, 15 and a comparison in an embodiment of the present invention.

[0008] The following are annotations for the drawings: 1 is a connection structure, 2 is a headphone body, 3 is a headphone case, 4 is a soundproof inner case, 5 is a soundproof sponge, 6 is a soundproof part, 61 is a honeycomb-shaped soundproof part, 62 is a spiral soundproof part, 63 is a spiral soundproof part, 7 is a soundproof part, 71 is a honeycomb-shaped soundproof part, 711 is a comb hole, 72 is a spiral pipe soundproof part, 721 is a spiral pipe channel, 73 is a spiral soundproof part, 731 is a rolled side plate, 8 is a fine hole plate, 81 is a first fine hole plate, 82 is a second fine hole plate, 83 is a third fine hole plate, 9 is a soundproof pad, 10 is an earphone cover connection case, and 11 is an earphone cover. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The embodiment of the present invention will be described in more detail with reference to the drawings. For convenience of description, the terms "front", "rear", "front", "back", "left", "right", "top", "bottom", "up", "down", "inside", "outside", "middle" and other terms indicating positional relationships in the present invention indicate orientations and positional relationships based on the drawings. Only for the sake of simple description of the present invention, it is not intended to indicate or imply that the device or parts are constructed and operated in a specific orientation, and therefore does not imply any limitation of the present invention or any limitation of the actual orientation of the product or device during the process of manufacture, use, sale, etc. Furthermore, the terms "first", "second", "third", etc. are used for the purpose of describing the purpose, and do not imply the relative importance or quantity of the technical features indicated. Furthermore, in the embodiments of the present invention, unless otherwise clearly specified or restricted, the terms "mounting", "installation", "connection", "fixing", "configuration", etc. should be interpreted broadly, for example, a fixed connection may be a detachable connection or an integrated connection. It may be a direct connection or an indirect connection via an intermediate medium. For a person skilled in the art, the above terms will understand the specific meanings in the present invention based on the specific situation. EXAMPLES

[0010] As shown in FIG. 1 and FIG. 2, the present invention relates to a noise canceling headphone. It includes a connection mechanism 1 and two headphone bodies 2 at both ends of the connection mechanism 1. Each headphone body 2 is provided with a headphone case 3, which is a semi-closed storage space connected to the connection mechanism 1 and has an opening, and a honeycomb-shaped soundproofing part 61 is installed inside the headphone case 3. The earphone cover 11 is connected to the opening of the headphone case 3 through the earphone cover connection case 10. The honeycomb-shaped soundproofing part 61 is composed of a honeycomb-shaped soundproofing part 71 on the side closer to the headphone case 3 (in this application, the headphone case side particularly refers to the part of the headphone case facing the opening of the headphone case) and a first fine hole plate 81 on the side farther from the headphone case 3 (the earphone cover 11 side). To be clear, the fine hole plate described in this application is a perforated plate, which means that the diameter of all the fine perforations is less than 1 mm.

[0011] 3, 4, and 5, the honeycomb-shaped sound deadening component 71 has a plurality of honeycomb holes 711 arranged in a continuous manner (the honeycomb holes 711 are arranged without gaps, with adjacent honeycomb holes 711 sharing the hole walls or having a filling, for example a honeycomb structure), and the honeycomb holes 711 are polygonal or near-polygonal holes (regular hexagons in this embodiment). The thickness of the hole walls of the honeycomb holes 711 is 0.6 mm to 1.2 mm, and the diameter is 2.8 mm to 4.8 mm. The honeycomb-shaped sound deadening component 71 gradually becomes higher from the outside of the periphery to the inside toward the contour surface toward the side of the headphone case 3, forming a curved surface, and this curved surface fits the inner contour surface of the headphone case 3. The first fine hole plate 81 has a plurality of porosity holes 711 and one-to-one microperforations (one porosity hole 711 corresponds to one microperforation), and the diameter of the microperforations is in the range of 0.5 mm to 0.8 mm.

[0012] Based on the noise blocking by the headphone case, the honeycomb structure of the honeycomb-shaped sound-proofing part 71 forms a large number of hole structures, and when the noise passes through this large number of hole structures, the number, diameter and length of the passage of the large number of hole structures allow the noise to be better absorbed and reduced. In addition, the diameter of the micro-perforations one-to-one with the honeycomb holes 711 on the first fine hole plate 81 is much smaller than the wavelength of the sound wave, so the sound resistance is large, the perforation rate is low, and the sound quality is small, so that after passing through the micro-perforations, the noise energy is further attenuated and consumed, thereby achieving noise reduction. Therefore, the honeycomb-shaped sound-proofing part 61 composed of the honeycomb-shaped sound-proofing part 71 and the first fine hole plate 81 has an excellent noise reduction effect. At the same time, in one embodiment, the first fine-hole plate 81 can be fitted into the storage space of the headphone case 3, and the outer circumference of the first fine-hole plate 81 fits into the inner wall of the headphone case 3 and is tightly assembled, which further improves the noise canceling effect.

[0013] In one embodiment, the first fine hole plate 81 has the following structure. The first fine hole plate 81 is a hollow truncated cone with a height of 1 mm from the bottom surface. The truncated cone corresponds to the cavity 711 one-to-one, and the center of the truncated cone is provided with a micro-perforation to connect with the cavity 711. In the first fine hole plate 81 adopting this structure, the hollow truncated cone controls the flow of sound passing through the cavity 711 and sends it to the micro-perforation, so that the frictional wear of the sound energy in the cavity 711 can be increased. At the same time, the noise leakage from the earphone cover is prevented, and a noise canceling effect is formed. The inclined surface of the truncated cone plays the role of reflection and refraction, eliminating the noise cancellation, and maximally attenuating and damping, so as to obtain a better noise canceling effect.

[0014] In one embodiment, the nest hole 711 is also provided with micro-perforations on the side closer to the headphone case 3, and when micro-perforations are provided on both ends of the nest hole 711, the sound waves pass through the micro-perforations twice when entering and exiting the nest hole 711, resulting in better sound-proofing and vibration-damping effects.

[0015] In one embodiment, a soundproof inner case 4 is provided between the headphone case 3 and a honeycomb-shaped soundproof part 61, which provides soundproofing against sounds passing through the headphone case 3 and improves the noise canceling effect.

[0016] In one embodiment, the soundproof inner case 4 has micro-perforations on the bottom of the inner case closer to the headphone case 3, and sound passing through the headphone case 3 is muffled and attenuated through the micro-perforations when it enters the soundproof inner case 4, so that the sound energy is consumed and the noise canceling effect can be further improved.

[0017] In one embodiment, a soundproof sponge 5 is provided between the soundproof inner case 4 and the honeycomb-shaped soundproof part 61, so that the sound passing through the soundproof inner case 4 is filtered and then re-enters the honeycomb-shaped soundproof part 61, thereby improving the noise canceling effect.

[0018] In one embodiment, a soundproofing pad 9 is provided between the honeycomb-shaped soundproofing part 61 and the earphone cover connection case 10, which provides further soundproofing against sounds passing through the honeycomb-shaped soundproofing part 61, thereby further improving the noise reduction effect of the noise-canceling headphones.

[0019] In one embodiment, the soundproof pad 9 is a sponge core wrapped with cloth on the outside, which has soundproofing and noise reduction effects, and at the same time has a soft and elastic texture, making it more comfortable to wear.

[0020] In one embodiment, the diameter of the micro-perforations is between 0.5 mm and 0.8 mm, with diameters within this range providing better sound deadening and attenuation effects.

[0021] In one embodiment, the headphone case 3 has a hard shell inside and a soft rubber exterior. The soft rubber exterior improves the impact resistance of the noise cancelling headphones, and the combination of the soft rubber exterior and the hard shell interior provides better friction against sound, resulting in better noise cancelling performance.

[0022] In one embodiment, the first fine hole plate 81 is outside the storage space of the headphone case 3, and the honeycomb-shaped soundproofing part 71 is inside the storage space of the headphone case 3. The honeycomb-shaped soundproofing part 61 is connected to the headphone case 3 via the first fine hole plate 81 or the honeycomb-shaped soundproofing part 71. The earphone cover 11 is attached to the first fine hole plate 81.

[0023] In an embodiment, the connection structure 1 is a rigid arc-shaped connection frame with an arc-shaped curved surface, or is a flexible material or a flexible elastic body or other flexible materials. EXAMPLES

[0024] As an alternative embodiment, the honeycomb soundproofing element 61 of the first embodiment can be replaced by a spiral soundproofing element 62, as described in more detail below.

[0025] As shown in FIG. 8, the present invention relates to a noise-canceling headphone. The noise-canceling headphone includes a connection structure 1 and two headphone bodies 2 at both ends of the connection structure 1. Each headphone body 2 is connected to the connection structure 1 and includes a headphone case 3 having a semi-closed storage space with an opening, and a spiral soundproofing part 62 is installed inside the headphone case 3. The earphone cover 11 is connected to the opening of the headphone case 3 through the earphone cover connection case. The spiral soundproofing part 62 is composed of a spiral pipe soundproofing part 72 on the side close to the headphone case 3 and a second fine hole plate 82 on the side far from the headphone case 3 (the side close to the earphone cover 11).

[0026] 9 and 10, the spiral pipe sound deadening component 72 has a contour surface facing the side direction of the headphone case 3, which gradually becomes higher from the outside to the inside of the outer periphery of the spiral pipe sound deadening component 72, forming a curved surface, and this curved surface fits the contour surface inside the headphone case 3, and the inside of the spiral pipe sound deadening component 72 has micro-perforations arranged continuously (there is a shared pipe wall between adjacent spiral pipes or there is a filler, and it is arranged in a state where there are no gaps). A spiral pipe channel 721 is provided that spirals inward like a spring from the side of the headphone case 3 toward the side direction of the earphone cover 11. The spiral pipe channel 721 has an inner diameter in the range of 0.8 mm to 1.6 mm, and several micro-perforations are provided on the second fine hole plate 82 in one-to-one correspondence with the spiral pipe channel 721.

[0027] By blocking noise through the headphone case, the spiral pipe channel 721 of the spiral pipe sound deadening component 72 is formed with a multi-hole structure, so that when the noise passes through this multi-hole structure, the noise can be better absorbed and reduced due to the quantity, diameter and passage length of the multi-hole structure. In addition, the diameter of the micro-perforations one-to-one with the spiral pipe channel 721 on the second micro-perforation plate 82 is much smaller than the wavelength of the sound wave, so the sound resistance is large, the perforation rate is low, and the sound quality is poor, so that the noise is further reduced after passing through the micro-perforations; This Therefore, the helical soundproofing component 62 composed of the helical pipe soundproofing component 72 and the second fine hole plate 81 has an excellent noise reducing effect.

[0028] In one embodiment, the second fine-hole plate 82 is fitted into the storage space of the headphone case 3, and the outer circumference of the second fine-hole plate 82 fits into the inner wall of the headphone case 3 and is tightly assembled, which can improve the soundproofing and noise canceling effects.

[0029] In one embodiment, a soundproof inner case 4 is provided between the headphone case 3 and the spiral soundproof component 62, which can isolate the sound passing through the headphone case 3 and enhance the noise reduction effect.

[0030] In one embodiment, the soundproof inner case 4 has micro-perforations at the bottom of the inner case close to the headphone case 3, and sound passing through the headphone case 3 is muffled and attenuated through the micro-perforations when it enters the soundproof inner case 4, the sound energy is consumed, and the noise reduction effect is further enhanced.

[0031] In one embodiment, a soundproof sponge 5 is provided between the soundproof inner case 4 and the spiral soundproof part 62, so that the sound passing through the soundproof inner case 4 is soundproof filtered and the sound re-enters the spiral soundproof part 62, thereby improving the noise reduction effect.

[0032] In one embodiment, a soundproofing pad 9 is provided between the spiral soundproofing part 62 and the earphone cover connection case 10, so that the sound passing through the spiral soundproofing part 62 is again blocked, thereby further improving the noise reduction effect of this noise-canceling headphone.

[0033] In one embodiment, the soundproof pad 9 is a sponge core wrapped with cloth on the outside, which has the effect of noise reduction and at the same time has a soft and elastic quality, making it more comfortable to wear.

[0034] In one embodiment, the diameter of the micro-perforations is 0.5 mm to 0.8 mm, and in this range of diameter, the sound deadening and damping effect is better.

[0035] In one embodiment, the headphone case 3 is a hard shell, and the outside is wrapped in a soft rubber material. The soft outer rubber makes the noise cancelling headphones more impact resistant, and the combination of the soft outer rubber and the hard inner shell provides better friction against sound, enhancing the noise reduction effect.

[0036] In one embodiment, the second fine hole plate 82 is outside the storage space of the headphone case 3, and the spiral pipe sound deadening part 72 is inside the storage space of the headphone case 3. The spiral sound deadening part 62 is connected to the headphone case 3 through the second fine hole plate 82 or the spiral pipe sound deadening part 72. The earphone cover 11 is attached to the second fine hole plate 82.

[0037] In an embodiment, the connection structure 1 is a rigid arc-shaped connection frame with an arc-shaped curved surface, or is a flexible material or a flexible elastic body or other flexible materials. EXAMPLES

[0038] In an alternative embodiment, a spiral soundproofing element 63 can be used instead of the honeycomb soundproofing element 61 of the first embodiment, as detailed below.

[0039] As shown in Fig. 8, the present invention relates to a noise-canceling headphone. The noise-canceling headphone includes a connection structure 1 and two headphone bodies 2 at both ends of the connection structure 1. Each headphone body 2 is connected to the connection structure 1 and includes a headphone case 3 having a semi-closed storage space with an opening, and a spiral soundproofing part 63 is installed inside the headphone case 3. The earphone cover 11 is connected to the opening of the headphone case 3 through the earphone cover connection case 10. The spiral soundproofing part 63 is composed of a spiral soundproofing part 73 on the side close to the headphone case 3 and a third fine hole plate 83 close to the earphone cover 11 side.

[0040] As shown in Figs. 12, 13 and 14, the spiral silencing component 73 is perpendicular to the winding side plate 731 of the third fine hole plate 83, and is wound from the inside to the outside of the winding side plate 731 along the axis, the thickness of the winding side plate 731 is 1.2mm to 2mm, and the intervals between the winding side plates 731 are kept even, with a distance of 1.8mm to 2.3mm. The spiral silencing component 73 has a contour surface facing the side direction of the headphone case 3, and the outer periphery of the spiral silencing component 73 is raised from the outside to the inside, forming a curved surface, and this curved surface fits the space inside the headphone case 3. The third fine hole plate 83 has several microperforations, and these microperforations are provided in the gaps formed between two adjacent layers of the winding side plates 731. The perforation rate of the microperforations in this gap (total area of ​​holes per unit area) is 1% to 5%.

[0041] In blocking noise through the headphone case, the spiral sound deadening component 73 has a spiral channel, so when the noise passes through the spiral channel, the noise is better absorbed and attenuated according to the number of the spiral channels and the area of ​​the side plate. In addition, on the third fine hole plate 83, the gaps formed between the two adjacent layers of the spiral side plate 731 are provided with a perforation rate of 1% to 5%, and the diameter of the micro-perforations is much smaller than the wavelength of the sound wave, so the sound resistance is large, and the perforation rate is low, so the sound quality is small, and after passing through the micro-perforations, the noise is further reduced, so that the purpose of noise cancellation can be achieved. Therefore, the spiral sound deadening component 63 combined with the spiral sound deadening component 73 and the third fine hole plate 83 has an excellent noise canceling effect.

[0042] In one embodiment, the third fine-hole plate 83 can be fitted into the storage space of the headphone case 3, and the outer circumference of the third fine-hole plate 83 fits into the inner wall of the headphone case 3, thereby realizing a tight assembly and further improving the sound insulation and noise canceling effects.

[0043] In one embodiment, the surface of the wound face plate in the scroll silencer 73 is roughened to increase the frictional force when the sound passes through, and to maximize the energy of the sound, thereby achieving the purpose of sound silencing and noise cancellation.

[0044] In one embodiment, a soundproof inner case 4 is provided between the headphone case 3 and the spiral soundproof component 63 to provide sound insulation against sounds passing through the headphone case 3 and enhance the noise canceling effect.

[0045] In one embodiment, the soundproof inner case 4 has microperforations on the bottom of the inner case closer to the headphone case 3, and sound passing through the headphone case 3 passes through the microperforations when entering the soundproof inner case 4, thereby reducing the sound energy and further enhancing the noise canceling effect.

[0046] In one embodiment, a soundproof sponge 5 is provided between the soundproof inner case 4 and the spiral soundproof component 63, so that the sound passing through the soundproof inner case 4 is filtered and then re-enters the spiral soundproof component 63, thereby improving the noise canceling effect.

[0047] In one embodiment, a soundproofing pad 9 is provided between the spiral soundproofing part 63 and the earphone cover connection case 10, which provides additional soundproofing against sounds passing through the spiral soundproofing part 63, further improving the soundproofing and noise canceling effects of the headphones.

[0048] In one embodiment, the soundproof pad 9 is a sponge core wrapped with a cloth exterior, which provides the soundproofing effect of the sponge core while at the same time providing a soft texture, elasticity, and comfort when worn.

[0049] In one embodiment, the diameter of the micro-perforations ranges from 0.5 mm to 0.8 mm, with micro-perforations in this range providing better sound damping effect.

[0050] In one embodiment, the inside of the headphone case 3 is a hard shell and the outside is wrapped in a soft rubber material. The soft rubber on the outside makes the noise cancelling headphones more shock resistant, and the combination of the soft rubber on the outside and the hard shell on the inside provides more friction against the sound, thereby enhancing the noise reduction effect.

[0051] In one embodiment, the third fine hole plate 83 is outside the storage space of the headphone case 3, and the spiral soundproofing part 73 is inside the storage space of the headphone case 3. The spiral soundproofing part 62 is connected to the headphone case 3 via the third fine hole plate 83 or the spiral soundproofing part 73. The earphone cover 11 is attached to the third fine hole plate 83.

[0052] In an embodiment, the connection structure 1 is a rigid arc-shaped connection frame with an arc-shaped curved surface, or is a flexible material or a flexible elastic body or other flexible materials.

[0053] Except for the honeycomb soundproofing component 61, the spiral soundproofing component 62, and the spiral soundproofing component 63 mentioned in the above embodiments, the soundproofing component 6 composed of the soundproofing component 7 near the headphone case 3 and the fine hole plate 8 can also solve the technical problem of the present invention, which will not be described in detail here.

[0054] By evaluating the performance of the noise canceling headphones with the honeycomb soundproofing element 61, the spiral soundproofing element 62, and the spiral soundproofing element 63 used in the above examples, according to the standard of GB / T7584.3 {Acoustic hearing protectors Part 3: Measuring the insertion loss of earmuff-type hearing protectors using a dedicated acoustic test device} and the standard of ISO4869-3 {Acoustic hearing protectors Measuring the insertion loss of earmuff-type hearing protectors using an acoustic test device}, the sound field was calibrated, and the samples of the examples of the present invention were tested in the range of 63 to 1000 Hz using pink noise with a 1 / 3 double frequency. The noise canceling data for sounds of different frequencies is shown in the table below: JPEG0007636828000002.jpg3168JPEG0007636828000003.jpg9568JPEG0007636828000004.jpg6469

[0055] Therefore, the noise-canceling headphones of the present invention have a structure of a soundproofing part that is composed of a soundproofing part on the side closer to the headphone case and a fine hole plate on the side closer to the earphone cover inside the headphone case, so that in blocking and attenuating noise through the headphone case, the noise that penetrates the headphone case, including low-frequency noise, is first attenuated and damped through the soundproofing part, and then the noise is attenuated again through the fine holes until the noise energy is consumed. Meanwhile, based on the above-mentioned structure, the present invention installs a soundproofing inner case or soundproofing sponge between the soundproofing part and the headphone case, or installs a soundproofing pad between the earphone cover and the soundproofing part, thereby attenuating noise in stages at multiple levels and further improving the effect of noise canceling.

[0056] In the above test data, the noise cancellation data of method 5, method 10, method 15 and the control method are compared, and the comparison results are shown in the table below: JPEG0007636828000005.jpg1364JPEG0007636828000006.jpg765

[0057] As a result of the above, noise is significantly attenuated in the low frequency band, especially at 250Hz, making these noise-canceling headphones extremely effective at eliminating low frequency noise.

[0058] The above embodiments are only relatively good embodiments for the present invention, and are not intended to limit the scope of the present invention. Any equivalent modifications based on the shape, structure and principle of the present invention are all within the scope of protection of the present invention.

Claims

1. A noise-canceling headphone device includes a headphone body (2) that includes a headphone case (3) that forms a storage space, and a soundproofing part (6) is provided inside the headphone case (3). The noise-canceling headphone device is characterized in that the soundproofing part (6) includes a sound-deadening part (7) on a side closer to the headphone case (3) and a fine hole plate (8) on a side farther from the headphone case (3).

2. 2. The noise-canceling headphone according to claim 1, wherein the fine hole plate (8) fits into the storage space of the headphone case (3) and the outer periphery of the fine hole plate (8) fits into the inner wall of the headphone case (3).

3. The noise cancelling headphones according to claim 2, characterized in that the headphone body (2) includes an earphone cover (11), the earphone cover (11) being attached to an opening of the headphone case (3).

4. 4. The noise cancelling headphone according to claim 3, wherein the earphone cover (11) is attached to the opening of the headphone case (3) via the earphone cover connection case (10).

5. 5. The noise cancelling headphone according to claim 4, characterized in that a soundproof pad (9) is installed between the soundproof part (6) and the earphone cover connection case (10).

6. 6. Noise cancelling headphones according to claim 5, characterized in that the soundproof pad (9) is a sponge core covered with a cloth on the outside.

7. The noise cancelling headphones according to claim 1, characterized in that the fine hole plate (8) is arranged outside the storage space of the headphone case (3) and the sound deadening part (7) is arranged inside the storage space of the headphone case (3). The sound insulation part (6) is connected to the headphone case (3) via the fine hole plate (8) or the sound deadening part (7).

8. The noise cancelling headphone according to claim 7, characterized in that the headphone body (2) includes an earphone cover (11), and the earphone cover (11) is attached to a fine hole plate (8).

9. 5. The noise cancelling headphone according to claim 4, characterized in that a soundproof pad (9) is installed between the earphone cover (11) and the fine hole plate (8).

10. 10. Noise cancelling headphones according to claim 9, characterized in that the noise cancelling pad (9) is a sponge core covered with a fabric on the outside.

11. 2. The noise cancelling headphone according to claim 1, wherein the contour surface of the sound deadening part (7) facing the headphone case (3) is gradually raised from the outside to the inside, forming a curved surface.

12. 12. Noise cancelling headphones according to claim 11, characterized in that the curved surface matches the inner contour surface of the headphone case (3).

13. 2. The noise-canceling headphone according to claim 1, wherein a soundproof inner case (4) is disposed between the headphone case (3) and the soundproof part (6).

14. 14. The noise cancelling headphone according to claim 13, wherein the soundproof inner case (4) has minute holes in an inner wall on a side closer to the headphone case (3).

15. 14. The noise cancelling headphones according to claim 13, characterized in that a soundproof sponge (5) is installed between the soundproof inner case (4) and the soundproof part (6).

16. 2. The noise cancelling headphone according to claim 1, wherein the fine hole plate has several holes with diameters ranging from 0.5 mm to 0.8 mm.

17. 2. The noise cancelling headphone according to claim 1, wherein the inside of the headphone case (3) is a hard shell and the outside is wrapped in soft rubber.

18. 2. The noise cancelling headphone according to claim 1, characterized in that the headphone includes a connection mechanism (1) and two headphone bodies (2) on either side of the connection mechanism (1).

19. The soundproofing part (6) is a honeycomb-shaped soundproofing part (61), the sound deadening part (7) is a honeycomb-shaped sound deadening part (71), and the micro-perforations (8) are a first micro-hole plate (81). The honeycomb-shaped sound deadening part (61) is composed of a honeycomb-shaped sound deadening part (71) on a side closer to the headphone case (3) and a first micro-hole plate (81) on a side farther from the headphone case (3). The honeycomb-shaped sound deadening part (71) has several honeycomb holes (711). The noise canceling headphones according to any one of claims 1 to 18, characterized in that the first micro-hole plate (81) is provided with several micro-perforations that correspond one-to-one to the honeycomb holes (711).

20. 20. The noise cancelling headphone according to claim 19, characterized in that several nest holes (711) are arranged in series.

21. The noise canceling headphone of claim 19, characterized in that the first fine hole plate (81) has a larger number of truncated cones higher than the bottom surface, these truncated cones correspond one-to-one to the holes (711), and the centers of these truncated cones have micro-perforations that connect to the holes (711).

22. 20. The noise cancelling headphone according to claim 19, characterized in that the cavity (711) is also provided with micro-perforations on the side closer to the headphone case (3).

23. The soundproofing part (6) is a spiral-shaped soundproofing part (62), the sound-deadening part (7) is a spiral pipe sound-deadening part (72), and the fine hole plate (8) is a second fine hole plate (82). The soundproofing part (62) is composed of the spiral pipe sound-deadening part (72) on the side closer to the headphone case (3) and the second fine hole plate (82) on the side farther from the headphone case (3). The noise canceling headphones according to any one of claims 1 to 18, characterized in that the spiral pipe sound-deadening part (72) has several spiral pipe channels (721), and the second fine hole plate (82) has several micro-perforations that correspond one-to-one with the above-mentioned spiral pipe channels (721).

24. 24. The noise cancelling headphone according to claim 23, characterized in that several spiral pipes are arranged in series.

25. The soundproofing part (6) is a spiral-shaped soundproofing part (63), the sound deadening part (7) is a spiral-shaped sound deadening part (73), and the fine hole plate (8) is a third fine hole plate (83). The soundproofing part (63) in the shape of a spiral is composed of the spiral sound deadening part (73) on the side closer to the headphone case (3) and the third fine hole plate (83) on the side farther from the headphone case (3). The noise canceling headphones according to any one of claims 1 to 18, characterized in that the spiral sound deadening part (73) is wound around the winding side plate (731) of the third fine hole plate (83) with a perpendicular axis, and the third fine hole plate (83) is provided with several micro-perforations.

26. 26. The noise cancelling headphone of claim 25, wherein the surface of the spiral sound deadening element (73) is a rough surface.

27. The noise canceling headphone according to claim 25, characterized in that the micro-perforations are provided in the gaps between two adjacent layers of the rolled side panels (731), and the micro-perforation rate in the gaps is 1% to 5%.

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