Ergonomic headphone

Abstract

The present invention discloses an ergonomic headset, comprising a left earmuff, a right earmuff and a headband; the headband comprises a headband body, a left retractable belt, a right retractable belt and an adjustment knob, the headband body is hollow, the upper end of the left retractable belt extends into the headband body, and the lower end is connected to the left earmuff, the upper end of the right retractable belt extends into the headband body, and the lower end is connected to the right earmuff; the adjustment knob comprises a knob structure and a left rack belt and a right rack belt, the left rack belt and the right rack belt are both engaged with the knob structure, the left rack belt and the right rack belt are both located inside the headband body, and the left rack belt is connected to the left retractable belt, and the right rack belt is connected to the right retractable belt; in a first state, the rotation of the knob structure can drive the left and right rack belts to move, and in a second state, the rotation of the knob structure cannot drive the left and right rack belts to move. The present invention automatically prevents the earmuffs from squeezing the lower edge of the ear too much, and automatically makes the position of the earmuffs just reach the most comfortable position.

Description

Technical Field

[0001] The invention relates to the field of earphones, and in particular to an ergonomic headphone. Background Art

[0002] Compared with in-ear earphones, headphones protect the eardrum better, and headphones are often more beautiful in appearance design. Therefore, they are very popular among young people.

[0003] However, whether it is a headband or an earmuff, the headset will produce a sense of pressure on the human head and cheeks, which will cause discomfort after wearing for a long time. Therefore, how to provide a headset that reduces the sense of pressure, is comfortable to wear, and conforms to ergonomics has become a technical problem that needs to be solved in this field. Summary of the invention

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] An ergonomic headset comprises a left earmuff, a right earmuff and a headband, wherein the left earmuff and the right earmuff are respectively arranged at two ends of the headband;

[0006] The headband includes a headband body, a left retractable band, a right retractable band and an adjustment knob. The headband body is hollow. The upper end of the left retractable band extends into the headband body and the lower end is connected to the left earmuff. The upper end of the right retractable band extends into the headband body and the lower end is connected to the right earmuff.

[0007] The adjustment knob is arranged at the upper end of the central position of the headband body, and the adjustment knob includes a knob structure and a left rack belt and a right rack belt. The left rack belt and the right rack belt are both engaged with the knob structure. The left rack belt and the right rack belt are both located inside the headband body, and the left rack belt is connected to the left telescopic belt, and the right rack belt is connected to the right telescopic belt.

[0008] Among them, in the first state, the rotation of the knob structure can drive the left and right rack belts to move, and in the second state, the rotation of the knob structure cannot drive the left and right rack belts to move.

[0009] Furthermore, the knob structure includes a knob body and a transmission member, a transmission gear is coaxially fixedly arranged at the lower end of the transmission member, and the transmission gear is meshed with both the left rack belt and the right rack belt;

[0010] Wherein, in the first state, the knob body drives the transmission member to rotate together; in the second state, the knob body rotates relative to the transmission member.

[0011] Furthermore, the inner circumferential surface of the knob body is evenly provided with a plurality of internal recesses, and the internal recesses are arranged continuously, the internal recesses are surrounded by two inclined surfaces, and the two inclined surfaces are at equal angles relative to the radial surface of the knob body; the transmission member is provided with triangular protrusions corresponding to the internal recesses, and the shape of the triangular protrusions matches the internal recesses, a through hole is opened in the middle of the transmission member, two triangular protrusions are provided, and both can be slidably arranged in the through hole, and a thrust spring is provided between the two triangular protrusions.

[0012] Furthermore, the lower ends of the left and right retractable bands are connected to mounting rings, a rotating shaft and a shell are provided inside the mounting ring, the rotating shaft is rotatably installed inside the mounting ring, and the shell is fixedly connected to the mounting ring; an adjustment mechanism is provided inside the shell, the adjustment mechanism is connected to the rotating shaft, and the rotating shaft is connected to the left and right earmuffs.

[0013] Furthermore, the adjustment mechanism includes an active rotating member and a passive rotating member, and the passive rotating member is coaxially fixedly connected to the rotating shaft through a key connection;

[0014] Wherein, in the first state, the active rotating member rotates together with the passive rotating member; in the second state, the active rotating member rotates relative to the passive rotating member.

[0015] Furthermore, a plurality of ratchet grooves are evenly arranged on the inner circumference of the active rotating part, and the ratchet grooves are arranged continuously, and the ratchet grooves are composed of a first plane and a first inclined surface; an elastic part is arranged on the outer periphery of the passive rotating part, and the elastic part fixedly wraps the passive rotating part; a bending portion is provided at one end of the elastic part, and the bending portion bends outward and is positioned in the ratchet groove on the inner circumference side of the active rotating part, and the end shape of the bending portion matches the ratchet groove.

[0016] Furthermore, the bending portion includes a second plane and a second inclined plane, the second plane matches the first plane, and the second inclined plane matches the first inclined plane.

[0017] Furthermore, a receiving groove is provided on the outside of the passive rotating member.

[0018] Furthermore, an adjusting handle is installed on the outer side of the active rotating member, and correspondingly, a strip groove for the adjusting handle to move is provided on the shell.

[0019] Furthermore, a connecting piece is installed on the outer side of the rotating shaft, and correspondingly, a rectangular groove for the connecting piece to move is provided on the shell.

[0020] Furthermore, mounting blocks are provided at both ends of the headband. The mounting blocks are provided at the lower end of the shell and are connected to the rotating shaft through a connecting piece. The left earmuff and the right earmuff are connected to the mounting blocks through a Z-axis adjustment mechanism.

[0021] Further, the Z-axis adjustment mechanism includes a vertical damping shaft, an arc-shaped mounting plate and an offset damping shaft, the upper end of the vertical damping shaft is rotatably connected to the mounting block, and the lower end is fixedly connected to the arc-shaped mounting plate, the upper end of the offset damping shaft is fixedly connected to the arc-shaped mounting plate, and the lower end is rotatably connected to the left and right earmuffs;

[0022] The axial direction of the vertical damping axis is parallel to or coincides with the Z axis, and the axial direction of the offset damping axis is at an angle to the Z axis.

[0023] After adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0024] When adjusting the tightness of the headband, the knob body drives the transmission part to rotate together, and the transmission part drives the left and right rack belts to move closer or farther away from each other through the transmission gear to change the tightness of the headband; in the process of tightening the headband, when the tightness is just right, that is, when the comfort of the lower edge of the earmuff and the lower edge of the ear is just right, the knob body cannot drive the transmission part to rotate together. At this time, although the knob body is still rotating, the tightness of the headband no longer changes, which automatically prevents the earmuffs from squeezing the lower edge of the ear too much, and automatically makes the position of the earmuffs just reach the most comfortable position.

[0025] In the first state, under the action of the thrust spring, the triangular protrusion enters the internal depression and engages with it, and the transmission part can be driven when the knob body is rotated. In the second state, the thrust spring is squeezed, and the triangular protrusion continuously enters from one internal depression to the adjacent internal depression, and the hand will feel a slight vibration of the knob to prompt the user. The knob body cannot drive the transmission part when it is rotated, and the tightness of the headband is adjusted.

[0026] When the left and right earmuffs are clamped or loosened against the cheeks by rotating the active rotating member; and / or when the left and right earmuffs are directly opened by hand, the active rotating member drives the passive rotating member to rotate together, or the passive rotating member drives the active rotating member to rotate together, and the passive rotating member drives the left and right earmuffs to move closer to or away from each other through the rotating shaft, so as to change the clamping degree of the earmuffs against the cheeks; in the process of clamping the left and right earmuffs against the cheeks by rotating the active rotating member, when the clamping degree is just right, that is, when the comfort degree of the outer edge of the earmuff and the cheek is just right, the active rotating member cannot drive the passive rotating member to rotate together, and at this time, although the active rotating member is still rotating, the clamping degree of the earmuffs no longer changes, which automatically prevents the earmuffs from squeezing the ears and cheeks too much, and automatically makes the position of the earmuffs reach the most comfortable angle.

[0027] In the first state, the elastic member maintains its shape, the bent portion enters the ratchet groove and meshes with it, the active rotating member drives the passive rotating member to rotate together, or the passive rotating member drives the active rotating member to rotate together. In the second state, the bent portion is squeezed under the action of the first inclined surface, the bent portion is constantly deformed, and enters from one ratchet groove to the adjacent ratchet groove, and the hand will feel a slight vibration of the adjustment handle to prompt the user that the active rotating member cannot drive the passive rotating member when rotating, and the clamping degree of the earmuff no longer changes. At the same time, the adjustment mechanism of the present invention can be used by the user to push the adjustment handle in the opposite direction or directly pry the earmuff apart by hand when taking off the earphones, and it does not affect the next adjustment, thereby improving the convenience of taking off the earmuffs and allowing the user to obtain a better use experience.

[0028] In the present invention, the axial direction of the vertical damping axis is parallel to or coincides with the Z axis, and the axial direction of the offset damping axis is at an angle to the Z axis. Through the above arrangement, the earmuffs can adjust the angle of the earmuffs in the vertical direction and the offset direction. Compared with the wearable headphones in the prior art that can only adjust the earmuff angle in the vertical direction, the z-axis adjustment system of the present invention can adjust the angle of the earmuffs more accurately, making it more in line with the human face shape, thereby improving the comfort of wearing the earmuffs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is the front view of the headset (XOZ plane projection);

[0030] Figure 2 This is the side view of the headset (YOZ plane projection);

[0031] Figure 3 for Figure 2 Section view in the AA direction;

[0032] Figure 4 This is the exploded view of the knob structure and the rack belt;

[0033] Figure 5 This is a bottom view of the knob structure and the rack belt;

[0034] Figure 6 This is the installation ring structure diagram;

[0035] Figure 7 for Figure 1 Cross-sectional view in the middle BB direction;

[0036] Figure 8 for Figure 1 Cross-sectional view in CC direction;

[0037] Fig. 9 for Figure 2 Cross-sectional view in the middle DD direction;

[0038] Fig.10 for Fig. 9 Partial magnification;

[0039] Fig.11 Z-axis adjustment mechanism structure Figure 1 ;

[0040] Fig.12 Z-axis adjustment mechanism structure Figure 2 . DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0044] The terms "first", "second", etc. are only used to distinguish descriptions and should not be understood as indicating or implying relative importance. The terms "parallel", "vertical", etc. do not mean that the components must be absolutely parallel or vertical, but can be slightly tilted. For example, "parallel" only means that its direction is more parallel than "vertical", and does not mean that the structure must be completely parallel, but can be slightly tilted.

[0045] Embodiment 1:

[0046] like Figure 1-2As shown in Figure 4, an ergonomic headset comprises a left earmuff 1, a right earmuff 2 and a headband 3, wherein the left earmuff 1 and the right earmuff 2 are respectively arranged at two ends of the headband 3, the headband 3 comprises a headband body 30, a left retractable band 31, a right retractable band 32 and an adjustment knob 33, the headband body 30 is hollow, the upper end of the left retractable band 31 extends into the headband body 30, and the lower end is connected to the left earmuff 1, and the upper end of the right retractable band 32 extends into the headband body 3 0, the lower end is connected to the right earmuff 2, the adjustment knob 33 is arranged at the upper end of the central position of the headband body 30, the adjustment knob 33 includes a knob structure and a left rack belt 332 and a right rack belt 333, the left rack belt 332 and the right rack belt 333 are both engaged with the knob structure, the left rack belt 332 and the right rack belt 333 are both located inside the headband body 30, and the left rack belt 332 is connected to the left retractable belt 31, and the right rack belt 333 is connected to the right retractable belt 32. Through the above arrangement, rotating the knob structure can drive the left and right rack belts to move inside the headband body 30, thereby adjusting the length of the left and right retractable belts inside the headband body 30, and finally adjusting the positions of the left and right earmuffs to make them more suitable for the user's individual head.

[0047] In this embodiment, Figure 4-5 As shown, the knob structure includes a knob body 3311 and a transmission member 3312, a transmission gear 3313 is coaxially fixedly arranged at the lower end of the transmission member 3312, and the transmission gear 3313 is meshed with both the left rack belt 332 and the right rack belt 333;

[0048] In the first state, the knob body 3311 drives the transmission member 3312 to rotate together; in the second state, the knob body 3311 rotates relative to the transmission member 3312. Specifically, when adjusting the tightness of the headband 3, i.e., in the first state, the knob body 3311 drives the transmission member 3312 to rotate together, and the transmission member 3312 drives the left rack belt 332 and the right rack belt 333 to move closer to or farther from each other through the transmission gear 3313 to change the tightness of the headband 3; in the process of tightening the headband 3, when the tightness is just right, i.e., when the comfort of the lower edge of the earmuff and the lower edge of the ear is just right, i.e., in the second state, the knob body 3311 cannot drive the transmission member 3312 to rotate together. At this time, although the knob body 3311 still rotates, the tightness of the headband 3 no longer changes, automatically preventing the earmuff from squeezing the lower edge of the ear too much, and automatically making the position of the earmuff just reach the most comfortable position.

[0049] In this embodiment, Figure 3-5As shown, the inner circumference of the knob body 3311 is evenly provided with a plurality of internal recesses 3310, and the internal recesses 3310 are arranged continuously, the internal recesses 3310 are surrounded by two inclined surfaces 3314, and the two inclined surfaces 3314 are at equal angles relative to the radial surface of the knob body 3311; the transmission member 3312 is provided with a triangular protrusion 3315 corresponding to the internal recess 3310, and the shape of the triangular protrusion 3315 matches the internal recess 3310, a through hole 3316 is opened in the middle of the transmission member 3312, two triangular protrusions 3315 are provided, and both can be slidably arranged in the through hole 3316, and a thrust spring 3317 is provided between the two triangular protrusions 3315. Through the above arrangement, in the first state, under the action of the thrust spring 3317, the triangular protrusion 3315 enters the internal recess 3310 and engages therewith, and the knob body 3311 can drive the transmission member 3312 when it rotates. In the second state, the thrust spring 3317 is squeezed, and the triangular protrusion 3315 continuously enters from one internal recess 3310 to an adjacent internal recess 3310, and the hand will feel a slight vibration of the knob. The knob body 3311 cannot drive the transmission member 3312 when it rotates, and the tightness of the headband 3 is adjusted.

[0050] Embodiment 2:

[0051] On the basis of Example 1, Figure 1-2 As shown in FIGS. 6 and 7 , mounting rings 4 are provided at both ends of the headband 3. Specifically, the lower ends of the left retractable band 31 and the right retractable band 32 are connected to the mounting rings 4. A rotating shaft 5 and a housing 6 are provided inside the mounting ring 4. The rotating shaft 5 is rotatably installed inside the mounting ring 4. The housing 6 is fixedly connected to the mounting ring 4. An adjusting mechanism 7 is provided inside the housing 6. The adjusting mechanism 7 is connected to the rotating shaft 5. The rotating shaft 5 is connected to the left earmuff 1 and the right earmuff 2. The adjusting mechanism 7 can drive the rotating shaft 5 to rotate, thereby driving the earmuff to rotate with the rotating shaft 5 as the central axis, and finally adjusting the angles of the left and right earmuffs to make them more suitable for the user's head.

[0052] In this embodiment, Figure 6-8 As shown, the adjustment mechanism 7 includes an active rotating member 71 and a passive rotating member 72, and the passive rotating member 72 is coaxially fixedly connected to the rotating shaft 5 through a key connection 73;

[0053] In the first state, the active rotating member 71 rotates together with the passive rotating member 72; in the second state, the active rotating member 71 rotates relative to the passive rotating member 72. Specifically, when the left earmuff 1 and the right earmuff 2 are clamped to the cheek (wearing headphones) or loosened (taking off headphones) by rotating the active rotating member 71; and / or, when the left earmuff 1 and the right earmuff 2 are directly opened by hand, that is, in the first state, the active rotating member 71 drives the passive rotating member 72 to rotate together, or the passive rotating member 72 drives the active rotating member 71 to rotate together, and the passive rotating member 72 drives the left earmuff 1 and the right earmuff 2 to move closer to or away from each other through the rotating shaft 5, so as to change the clamping degree of the earmuffs on the cheeks. During the process of clamping the left earmuff 1 and the right earmuff 2 against the cheeks by rotating the active rotating member 71, when the clamping degree is just right, that is, when the outer edge of the earmuff fits the cheeks comfortably, that is, in the second state, the active rotating member 71 cannot drive the passive rotating member 72 to rotate together. At this time, although the active rotating member 71 is still rotating, the clamping degree of the earmuffs no longer changes, which automatically prevents the earmuffs from squeezing the ears and cheeks too much, and automatically makes the position of the earmuffs reach the most comfortable angle.

[0054] In this embodiment, Figure 6-10 As shown, the inner circumference of the active rotating member 71 is evenly provided with a plurality of ratchet grooves 711, and the ratchet grooves 711 are arranged continuously, and the ratchet grooves 711 are composed of a first plane 712 and a first inclined surface 713; the outer periphery of the passive rotating member 72 is provided with an elastic member 721 which is roughly "C" shaped, and the elastic member 721 fixedly wraps the passive rotating member 72; one end of the elastic member 721 is provided with a bending portion 722, and the bending portion 722 is bent outward and is positioned in the ratchet groove 711 on the inner circumference side of the active rotating member 71, and the end shape of the bending portion 722 matches the ratchet groove 711, specifically, the bending portion 722 includes a second plane 723 and a second inclined surface 724, the second plane 723 matches the first plane 712, and the second inclined surface 724 matches the first inclined surface 713. Through the above arrangement, in the first state, the elastic member 721 maintains its shape, the bent portion 722 enters the ratchet groove 711 and engages therewith, the active rotating member 71 drives the passive rotating member 72 to rotate together, or the passive rotating member 72 drives the active rotating member 71 to rotate together. In the second state, the bent portion 722 is squeezed under the action of the first inclined surface 713, and the bent portion 722 is continuously deformed, entering from one ratchet groove 711 to the adjacent ratchet groove 711, and the hand will feel a slight vibration of the active rotating member 71. When the active rotating member 71 rotates, it cannot drive the passive rotating member 72, and the clamping degree of the earmuff no longer changes.

[0055] In this embodiment, combined with Figure 9-10 The passive rotating member 72 is also provided with a receiving groove 725 on its exterior, so that the bending portion 722 can enter the receiving groove 725 when deformed.

[0056] In this embodiment, combined with Figure 2 , 7 -8, the outer side of the active rotating member 71 is also equipped with an adjustment handle 714, and correspondingly, the housing 6 is also provided with a strip groove for the adjustment handle 714 to move, so that the active rotating member 71 can be rotated by the adjustment handle 714. The outer side of the rotating shaft 5 is also equipped with a connecting member 74, and correspondingly, the housing 6 is also provided with a rectangular groove for the connecting member 74 to move, so that the rotating shaft 5 can drive the earmuff to rotate.

[0057] Embodiment 3:

[0058] On the basis of Example 3, Figure 1-2 As shown in 11-12, mounting blocks 8 are also provided at both ends of the headband 3. Specifically, the mounting blocks 8 are provided at the lower end of the shell 6 and are connected to the rotating shaft 5 through a connecting piece 74. The left earmuff 1 and the right earmuff 2 are connected to the mounting blocks 8 through a Z-axis adjustment mechanism 9 so that the earmuffs can rotate around the Z-axis as the center axis.

[0059] In this embodiment, the Z-axis adjustment mechanism 9 includes a vertical damping shaft 91, an arc-shaped mounting plate 92 and an offset damping shaft 93. The upper end of the vertical damping shaft 91 is rotatably connected to the mounting block 8, and the lower end is fixedly connected to the arc-shaped mounting plate 92. The upper end of the offset damping shaft 93 is fixedly connected to the arc-shaped mounting plate 92, and the lower end is rotatably connected to the left and right earmuffs.

[0060] The axial direction of the vertical damping axis 91 is parallel to or coincides with the Z axis, and the axial direction of the offset damping axis 93 is at an angle to the Z axis. Through the above arrangement, the earmuffs can adjust the angle of the earmuffs in the vertical direction and the offset direction. Compared with the wearable headphones in the prior art that can only adjust the angle of the earmuffs in the vertical direction, the z-axis adjustment system of the present invention can adjust the angle of the earmuffs more accurately, making it more in line with the human face shape, thereby improving the comfort of wearing the earmuffs.

[0061] The above is an example of the best implementation of the present invention, and the parts not described in detail are common knowledge of ordinary technicians in the field. The protection scope of the present invention shall be based on the content of the claims, and any equivalent transformation based on the technical enlightenment of the present invention is also within the protection scope of the present invention.

Claims

1. An ergonomic headset, comprising a left earmuff, a right earmuff and a headband, wherein the left earmuff and the right earmuff are respectively arranged at two ends of the headband; The headband includes a headband body, a left retractable band, a right retractable band and an adjustment knob. The headband body is hollow. The upper end of the left retractable band extends into the headband body and the lower end is connected to the left earmuff. The upper end of the right retractable band extends into the headband body and the lower end is connected to the right earmuff. The adjustment knob is arranged at the upper end of the central position of the headband body, and the adjustment knob includes a knob structure and a left rack belt and a right rack belt. The left rack belt and the right rack belt are both engaged with the knob structure. The left rack belt and the right rack belt are both located inside the headband body, and the left rack belt is connected to the left telescopic belt, and the right rack belt is connected to the right telescopic belt. Features: In the first state, the rotation of the knob structure can drive the left and right rack belts to move, and in the second state, the rotation of the knob structure cannot drive the left and right rack belts to move; The knob structure includes a knob body and a transmission member, a transmission gear is coaxially fixedly arranged at the lower end of the transmission member, and the transmission gear is meshed with both the left rack belt and the right rack belt; Wherein, in the first state, the knob body drives the transmission member to rotate together; in the second state, the knob body rotates relative to the transmission member; The inner circumference of the knob body is evenly provided with a plurality of internal recesses, and the internal recesses are arranged continuously, and the internal recesses are surrounded by two inclined surfaces, and the two inclined surfaces have equal angles relative to the radial surface of the knob body; The transmission member is provided with a triangular protrusion at the corresponding internal depression, and the shape of the triangular protrusion matches the internal depression. A through hole is opened in the middle of the transmission member. Two triangular protrusions are provided and can be slidably arranged in the through hole. A thrust spring is arranged between the two triangular protrusions.

2. The ergonomic headset according to claim 1, characterized in that: The lower ends of the left and right retractable bands are both connected to mounting rings, a rotating shaft and a shell are arranged inside the mounting ring, the rotating shaft is rotatably installed inside the mounting ring, and the shell is fixedly connected to the mounting ring; an adjustment mechanism is arranged inside the shell, the adjustment mechanism is connected to the rotating shaft, and the rotating shaft is connected to the left and right earmuffs.

3. The ergonomic headset according to claim 2, characterized in that: The regulating mechanism comprises an active rotating member and a passive rotating member, wherein the passive rotating member is coaxially fixedly connected to the rotating shaft through a key connection; Wherein, in the first state, the active rotating member rotates together with the passive rotating member; in the second state, the active rotating member rotates relative to the passive rotating member.

4. The ergonomic headset according to claim 3, characterized in that: The inner circumference of the active rotating part is evenly provided with a plurality of ratchet grooves, and the ratchet grooves are arranged continuously, and the ratchet grooves are composed of a first plane and a first inclined surface; an elastic part is provided on the outer circumference of the passive rotating part, and the elastic part fixedly wraps the passive rotating part; a bending portion is provided at one end of the elastic part, and the bending portion is bent outward and positioned in the ratchet groove on the inner circumference side of the active rotating part, and the end shape of the bending portion matches the ratchet groove.

5. The ergonomic headset according to claim 4, characterized in that: The bending portion includes a second plane and a second inclined surface, the second plane matches the first plane, and the second inclined surface matches the first inclined surface.

6. The ergonomic headset according to claim 4, characterized in that: The outside of the passive rotating member is also provided with a receiving groove.

7. The ergonomic headset according to claim 4, characterized in that: An adjusting handle is also installed on the outer side of the active rotating member, and correspondingly, a strip groove for the adjusting handle to move is also provided on the shell.

8. The ergonomic headset according to claim 4, characterized in that: A connecting piece is also installed on the outer side of the rotating shaft, and correspondingly, a rectangular groove for the connecting piece to move is also provided on the shell.

9. The ergonomic headset according to claim 4, characterized in that: Mounting blocks are also provided at both ends of the headband. The mounting blocks are arranged at the lower end of the shell and connected to the rotating shaft through a connecting piece. The left earmuff and the right earmuff are both connected to the mounting blocks through a Z-axis adjustment mechanism.

10. The ergonomic headset according to claim 9, characterized in that: The Z-axis adjustment mechanism includes a vertical damping shaft, an arc-shaped mounting plate and an offset damping shaft, wherein the upper end of the vertical damping shaft is rotatably connected to the mounting block, and the lower end is fixedly connected to the arc-shaped mounting plate, and the upper end of the offset damping shaft is fixedly connected to the arc-shaped mounting plate, and the lower end is rotatably connected to the left and right earmuffs; The axial direction of the vertical damping axis is parallel to or coincides with the Z axis, and the axial direction of the offset damping axis is at an angle to the Z axis.

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