Noise reduction type aviation earphone

Abstract

The utility model relates to the technical field of noise reduction type aviation earphones, in particular to a noise reduction type aviation earphone which comprises a head beam, two ends of the head beam are connected with connecting plates in a sliding mode, the lower ends of the two groups of connecting plates are connected with earmuffs used for answering in a rotating mode, a cavity is formed in the head beam, and a plurality of groups of air inlets are formed in the front face of the head beam. A plurality of groups of air outlets communicated with the cavity are formed in the inner wall of the head beam, a plurality of groups of soft cushions are fixedly connected to the inner wall of the head beam, and the plurality of groups of air outlets are respectively positioned among the plurality of groups of soft cushions; the cushion is divided into a plurality of blocks which are arranged at intervals, so that the contact area between the cushion and the head is reduced, a certain space is formed between the head beam and the head of a wearer, air or wind flows into the cavity in the head beam through the air inlet and flows to the position between the head beam and the head through the air outlet, and the part between the head beam and the head is cooled; the stuffiness feeling of the head beam part when the earphone is worn is reduced, and the wearing comfort of the earphone is improved.

Description

Technical Field

[0001] The utility model relates to the field of noise reduction aviation headphones, specifically to noise reduction aviation headphones. Background Technique

[0002] Aviation personnel will use aviation headphones during operation. The head-mounted aviation headphones are worn on the head, and the ear cups cover the ears. They have good noise reduction performance, can avoid external noise from affecting the received signal, and have strong signal transmission and reception capabilities.

[0003] Existing noise reduction aviation headphones, such as a head-mounted headphone for aviation use proposed in the patent application number "CN202120417833.3", through structures such as a head beam, a hollow adjustment strip, a long strip, and a bayonet, it is convenient for users to adjust the height of the ear cups according to the position of the ears, so as to solve the problem that the existing head-mounted headphones for aviation use are inconvenient for users to adjust. The soft pad can reduce the collision between the user's head and the head beam, and the comfort is better.

[0004] However, there is a soft pad between the head beam and the head. When the headphones are worn for a long time, or when the wearing environment temperature is relatively high, since the soft pad always fits the head, it will cause the area between the head beam and the head to be stuffy, thus affecting the wearing comfort of the headphones. Therefore, a noise reduction aviation headphone is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a noise reduction aviation headphone to solve the problems proposed in the above background technique.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] The noise reduction aviation headphone includes a head beam. Both ends of the head beam are slidably connected with connecting plates. The lower ends of the two groups of connecting plates are rotatably connected with ear cups for answering calls. A cavity is opened inside the head beam. Multiple air inlets are opened on the front surface of the head beam. The multiple air inlets are all communicated with the cavity. Multiple air outlets for communicating with the cavity are opened on the inner wall of the head beam. Multiple soft pads are fixedly connected to the inner wall of the head beam. The multiple air outlets are respectively located between the multiple soft pads.

[0008] Preferably, the area of the air inlets is larger than the area of the air outlets. The multiple air outlets correspond to the multiple air inlets respectively. The shape of the head beam is set to be arc-shaped, and the shape of the cavity is set to be arc-shaped.

[0009] Preferably, multiple elastic rings are fixedly connected to one side of the head beam. The shapes of the multiple elastic rings are all set to be semi-elliptical. The multiple elastic rings are respectively located between the multiple air inlets.

[0010] Preferably, connection frames are fixedly connected to the lower ends of the two groups of connecting plates. Connection seats are rotatably connected inside the two connection frames. Two ear cups are respectively fixedly connected to the two connection seats. Installation cavities are respectively formed inside the two ends of the head beam. The two ends of the two connecting plates are respectively slidably connected inside the two installation cavities.

[0011] Preferably, sliding grooves are respectively formed inside the head beam at positions on both sides of the installation cavity. Through holes are respectively formed on one side of the two sliding grooves close to the installation cavity. Clamping components are fixedly connected inside the two sliding grooves. The ends of the two clamping components respectively penetrate inside the through holes, and the two clamping components are in clamping cooperation with the connecting plates.

[0012] Preferably, teeth are fixedly connected to both sides of the connecting plate. The clamping component includes a spring. One end of the spring is fixedly connected to the inner wall of the sliding groove, and the other end is fixedly connected to a rack. The rack is slidably connected to the inner wall of the sliding groove, and the rack is meshed with the teeth.

[0013] The beneficial effects of the present utility model are as follows:

[0014] In the present utility model, the soft pad is divided into multiple pieces and arranged at intervals, so as to reduce the contact area between the soft pad and the head. A certain space is left between the head beam and the wearer's head. Air or wind will flow into the cavity inside the head beam through the air inlet, and flow out through the air outlet to between the head beam and the head, dissipating heat from the part between the head beam and the head, reducing the stuffy feeling of the head beam part when wearing the earphone, and improving the wearing comfort of the earphone. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts;

[0016] Figure 1 is a front schematic view of the overall structure of the present utility model;

[0017] Figure 2 is a back schematic view of the overall structure of the present utility model;

[0018] Figure 3 is a top schematic view of the overall structure of the present utility model;

[0019] Figure 4 is a cross-sectional view of the head beam structure of the present utility model;

[0020] Figure 5 is Figure 4 an enlarged schematic view of the structure at A of

[0021] The reference numerals in the drawings are as follows:

[0022] 1. Head beam; 2. Soft pad; 3. Connection frame; 4. Earphone cup; 5. Connection seat; 6. Cavity; 7. Air inlet; 8. Air outlet; 9. Elastic ring; 10. Installation cavity; 11. Sliding groove; 12. Through hole; 13. Rack; 14. Spring; 15. Connection plate. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0024] Noise-reducing aviation earphone, as Figures 1 - 5 shown, includes a head beam 1. The head beam 1 has a certain elasticity for easy wearing. Both ends of the head beam 1 are slidably connected with a connection plate 15. The length of the connection plate 15 located outside the head beam 1 is adjusted. The lower ends of the two groups of connection plates 15 are rotatably connected with earphone cups 4 for answering calls. The height of the earphone cups 4 is adjusted according to the connection plate 15, which is convenient for wearing by heads of multiple sizes. A cavity 6 is opened inside the head beam 1. Multiple air inlets 7 are opened on the front surface of the head beam 1. The multiple air inlets 7 are all communicated with the cavity 6. Multiple air outlets 8 for communicating with the cavity 6 are opened on the inner wall of the head beam 1. Multiple soft pads 2 are fixedly connected to the inner wall of the head beam 1. The multiple air outlets 8 are respectively located between the multiple soft pads 2.

[0025] By dividing the soft pad 2 into multiple pieces and arranging them at intervals, the contact area between the soft pad 2 and the head is reduced, and a certain space is supported at intervals between the head beam 1 and the wearer's head. Air or wind will enter the cavity 6 inside the head beam 1 through the air inlet 7 and flow to the space between the head beam 1 and the head through the air outlet 8, dissipating heat from the part between the head beam 1 and the head, reducing the stuffy feeling of the head beam 1 part when wearing the earphone, improving the wearing comfort of the earphone, and when the wearer wears this earphone and moves, the cavity 6 collects the flowing air through the air inlet 7, which can dissipate heat from the moving head of the wearer.

[0026] The area of the air inlet 7 is larger than the area of the air outlet 8. The multiple air outlets 8 correspond to the multiple air inlets 7 respectively. The shape of the head beam 1 is set as an arc, and the shape of the cavity 6 is set as an arc.

[0027] As Figure 1 shown, the large area of the air inlet 7 gathers the flowing air, and the air flows out through the small area of the air outlet 8, making the air flow dense, and the heat dissipation effect on the wearer's head is better. The arc-shaped head beam 1 fits the head, and the arc-shaped cavity 6 is adapted to the arc-shaped head beam 1.

[0028] A plurality of elastic rings 9 are fixedly connected to one side of the head beam 1 . The shapes of the plurality of elastic rings 9 are all set to be semi-elliptical. The plurality of elastic rings 9 are respectively located between the plurality of air inlets 7 .

[0029] like Figure 1 , Figure 3 As shown, the elastic ring 9 can prevent the head beam 1 from being damaged by collision and reduce the impact force of the head beam 1. The elastic ring 9 divides the airflow received and flows back to the air inlets 7 on both sides, further increasing the air intake effect of the air inlets 7.

[0030] The lower ends of the two groups of connecting plates 15 are fixedly connected to the connecting frames 3, and the two groups of connecting frames 3 are rotatably connected to the connecting seats 5. The two groups of earmuffs 4 are respectively fixed to the two groups of connecting seats 5. Installation cavities 10 are opened inside the two ends of the headband 1, and the ends of the two groups of connecting plates 15 are respectively slidably connected to the two groups of installation cavities 10.

[0031] like Figure 1 , Figure 2 As shown, by rotating the connecting seat 5, the earmuff 4 and the connecting frame 3 are rotated, and the angle between the earmuff 4 and the headband 1 can be adjusted to facilitate wearing.

[0032] Sliding grooves 11 are provided inside the head beam 1 at positions on both sides of the installation cavity 10, and through openings 12 are provided on the side of the two groups of sliding grooves 11 close to the installation cavity 10. The two groups of sliding grooves 11 are fixed with snap-fit components, and the ends of the two groups of snap-fit components pass through the through openings 12. The two groups of snap-fit components are snap-fitted with the connecting plate 15, and the through openings 12 prevent the ends of the snap-fit components from escaping from the sliding grooves 11.

[0033] like Figure 4 , Figure 5 As shown, when one end of the connecting plate 15 is inserted into the installation cavity 10 , the clamping assembly in the sliding groove 11 presses and clamps the side of the connecting plate 15 to prevent the connecting plate 15 from being separated from the installation cavity 10 .

[0034] The connecting plate 15 is fixed with teeth on both sides, and the clamping assembly includes a spring 14, one end of the spring 14 is fixed to the inner wall of the sliding groove 11, and the other end is fixed to the rack 13, the rack 13 is slidably connected to the inner wall of the sliding groove 11, and the rack 13 is meshed with the teeth.

[0035] like Figure 4 , Figure 5As shown, when the connection plate 15 is inserted into the installation cavity 10, the tooth teeth squeeze the clamping component. Since both the tooth teeth and the rack 13 are isosceles triangles, the rack 13 is compressed under pressure, the spring 14 is compressed, and the rack 13 slides into the sliding groove 11 away from the tooth teeth. When the connection plate 15 stops being inserted, the spring 14 squeezes the rack 13 to engage the rack 13 with the tooth teeth, preventing the connection plate 15 from sliding in the installation cavity 10. Similarly, when pulling the connection plate 15, the connection plate 15 can adjust its length and be effectively locked through the spring 14 and the rack 13.

[0036] The working principle of the noise-reducing aviation headset provided by the present utility model is as follows:

[0037] By dividing the soft pad 2 into multiple pieces and arranging them at intervals, the contact area between the soft pad 2 and the head is reduced, and a certain space is supported at intervals between the head beam 1 and the wearer's head. Air or wind flow will enter the cavity 6 inside the head beam 1 through the air inlet 7 and flow out through the air outlet 8 to the area between the head beam 1 and the head, dissipating heat from the area between the head beam 1 and the head, reducing the stuffy feeling of the head beam 1 when wearing the headset, and improving the wearing comfort of the headset. The height of the headgear is adjusted and locked through the connection plate 15 and the clamping component, increasing the usable range of the head diameter of the headgear.

[0038] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. Noise-canceling aviation headset, including a head beam (1), characterized in that, Both ends of the head beam (1) are slidably connected with connecting plates (15). The lower ends of the two groups of connecting plates (15) are rotatably connected with ear cups (4) for answering calls. A cavity (6) is formed inside the head beam (1). A plurality of air inlets (7) are formed on the front surface of the head beam (1). The plurality of air inlets (7) are all communicated with the cavity (6). A plurality of air outlets (8) for communicating with the cavity (6) are formed on the inner wall of the head beam (1). A plurality of soft pads (2) are fixedly connected to the inner wall of the head beam (1). The plurality of air outlets (8) are respectively located between the plurality of soft pads (2).

2. The noise-canceling aviation headset according to claim 1, wherein The area of the air inlet (7) is larger than that of the air outlet (8). The plurality of air outlets (8) respectively correspond to the plurality of air inlets (7). The shape of the head beam (1) is set as an arc shape, and the shape of the cavity (6) is set as an arc shape.

3. The noise-canceling aviation headset according to claim 2, characterized in that, A plurality of elastic rings (9) are fixedly connected to one side of the head beam (1). The shapes of the plurality of elastic rings (9) are all set as semi-elliptical shapes. The plurality of elastic rings (9) are respectively located between the plurality of air inlets (7).

4. The noise-canceling aviation headset according to claim 1, characterized in that, Connecting frames (3) are fixedly connected to the lower ends of the two groups of connecting plates (15). Connecting seats (5) are rotatably connected inside the two groups of connecting frames (3). The two groups of ear cups (4) are respectively fixedly connected to the two groups of connecting seats (5). Installation cavities (10) are formed inside both ends of the head beam (1). The end parts of the two groups of connecting plates (15) are respectively slidably connected inside the two groups of installation cavities (10).

5. The noise reduction type aviation headset according to claim 4, characterized in that, Sliding grooves (11) are formed at positions on both sides of the installation cavity (10) inside the head beam (1). Through holes (12) are formed on one side of the two groups of sliding grooves (11) close to the installation cavity (10). Clamping components are fixedly connected inside the two groups of sliding grooves (11). The end parts of the two groups of clamping components all penetrate inside the through holes (12), and the two groups of clamping components are both in clamping cooperation with the connecting plates (15).

6. The noise reduction type aviation headset according to claim 5, characterized in that, Tooth teeth are fixedly connected to both sides of the connecting plate (15). The clamping component includes a spring (14). One end of the spring (14) is fixedly connected to the inner wall of the sliding groove (11), and the other end is fixedly connected to a rack (13). The rack (13) is slidably connected to the inner wall of the sliding groove (11), and the rack (13) meshes with the tooth teeth.

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