Clamping force adjustment structure and headphone

Abstract

The present invention discloses a clamping force adjustment structure and a head-mounted earphone. The clamping force adjustment structure includes a headband and a slider. The headband includes a first clamping section, a connecting section, and a second clamping section that are connected in sequence. The connecting section is provided with an opening penetrating through the upper and lower surfaces of the headband. The first clamping section is provided with a first elastic sheet extending into the opening, and the second clamping section is provided with a second elastic sheet extending into the opening. Both the first elastic sheet and the second elastic sheet are spaced apart from the connecting section. The slider is movably connected to the connecting section and can move into the opening to be engaged and cooperate with the first elastic sheet and the second elastic sheet. The clamping force adjustment structure proposed by the present invention can adjust the clamping force of the headband and improve the comfort of the user when wearing the head-mounted earphone.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic products, and particularly relates to a clamping force adjusting structure and a head-mounted earphone. Background Art

[0002] A head-mounted earphone includes left and right sound generating units and a crossbeam member connecting the left and right sound generating units. The left and right sound generating units are generally dynamic coil units. In the dynamic coil unit, the magnetic circuit system applies a driving force to the voice coil under the drive of an electrical signal, so that the voice coil drives the diaphragm to vibrate and generate sound. The left and right ear cups of the head-mounted earphone both have a relatively large internal space, which can accommodate more circuit components and also allows the use of larger and more complex sound generating units. Therefore, the head-mounted earphone generally has better acoustic performance than the in-ear earphone. In addition, when the head-mounted earphone is worn, it covers the human ear, which can avoid problems such as ear canal friction and discomfort caused by the need to be inserted into the ear canal like the in-ear earphone, and is more suitable for long-term wearing. Therefore, the wearing experience of the head-mounted earphone is generally also better than that of the in-ear earphone. The advantages of the head-mounted earphone different from the in-ear earphone enable the head-mounted earphone to still have a wide user market.

[0003] The support main body in the crossbeam member of the head-mounted earphone is a headband, and the "headband" gets its name because it surrounds and clamps the head and is integrally in a strip structure. The headband in the head-mounted earphone connects its left and right ear cups, and the outside of the headband is generally wrapped with a flexible material to improve the wearing comfort.

[0004] In the related art, the headband is made of steel, which can produce a certain deformation when worn and can also elastically return to its original shape when removed, so that it can be reused repeatedly without being easily deformed. However, after the headband leaves the factory, it has a well-tuned stiffness and curvature. The head circumferences of users in different age groups, genders, and ethnic groups vary greatly. When the same head-mounted earphone is worn on different users' heads, some users will feel that the clamping force of the headband is too weak and the earphone is worn too loosely; while some other users may feel that the clamping force of the headband is too strong and the earphone is worn too tightly. Thus, the above-mentioned headband has the problem of being difficult to meet the comfortable wearing needs of different users. Summary of the Invention

[0005] The main object of the present invention is to propose a clamping force adjusting structure, aiming to improve the comfort when the head-mounted earphone is worn.

[0006] To achieve the above object, the present invention proposes a clamping force adjusting structure applied to a head-mounted earphone. The clamping force adjusting structure includes:

[0007] A headband, the headband includes a first clamping section, a connecting section, and a second clamping section connected in sequence. The connecting section is provided with an opening penetrating through the upper and lower surfaces of the headband. The first clamping section is provided with a first elastic piece extending into the opening, and the second clamping section is provided with a second elastic piece extending into the opening. Both the first elastic piece and the second elastic piece are spaced apart from the connecting section; and

[0008] A slider, the slider is movably connected to the connecting section and can move into the opening to be snap-fitted with the first elastic piece and the second elastic piece.

[0009] In an embodiment of the present invention, one end of the first elastic piece away from the first clamping section is provided with a first connecting portion, one end of the second elastic piece away from the second clamping section is provided with a second connecting portion, both ends of the slider are provided with third connecting portions, and the connecting section is provided with a fourth connecting portion slidably connected to the third connecting portions;

[0010] When the slider is snap-fitted with the first elastic piece and the second elastic piece, one of the third connecting portions is slidably limited by the first connecting portion, and the other third connecting portion is slidably limited by the second connecting portion.

[0011] In an embodiment of the present invention, at least part of the structures of the first connecting portion, the second connecting portion, and the third connecting portion are provided as bent sections, and the third connecting portion is adapted to the first connecting portion and the second connecting portion.

[0012] In an embodiment of the present invention, the structure of the first connecting portion and the structure of the second connecting portion are arranged in mirror symmetry.

[0013] In an embodiment of the present invention, the fourth connecting portion includes two limiting blocks provided on the connecting section, and each limiting block and the connecting section enclose a sliding groove;

[0014] When the slider is connected to the connecting section, each of the third connecting portions is slidably limited in one of the sliding grooves.

[0015] In an embodiment of the present invention, the first clamping section is provided with a plurality of the first elastic pieces arranged in sequence along the width direction of the headband, the second clamping section is provided with a plurality of the second elastic pieces arranged in sequence along the width direction of the headband, and each of the first elastic pieces is arranged opposite to one of the second elastic pieces to form an elastic piece pair;

[0016] When the slider moves into the opening, the slider is snap-fitted with at least one of the elastic piece pairs.

[0017] In an embodiment of the present invention, the connecting section is provided with two of the openings, and the two openings are arranged in a staggered manner in the width direction of the headband;

[0018] The first clamping section is provided with at least two first elastic pieces respectively extending into the two openings, and the second clamping section is provided with at least two second elastic pieces respectively extending into the two openings;

[0019] The connecting section is provided with two sliders, and each slider can move into one of the openings and is clamped and cooperated with the first elastic piece and the second elastic piece in the opening.

[0020] In an embodiment of the present invention, the clamping force adjusting structure further includes a dial block provided on the slider. The dial block is located between the first elastic piece and the second elastic piece, and at least part of the structure of the dial block protrudes from the upper surface of the headband.

[0021] In an embodiment of the present invention, the clamping force adjusting structure further includes a flexible sleeve wrapped around the headband. The flexible sleeve is provided with a slot, and the dial block is limited in the slot and can move along the slot when the slider moves.

[0022] To achieve the above object, the present invention further provides a head-mounted earphone, which includes:

[0023] The above clamping force adjusting structure; and

[0024] A sound generating component, the sound generating component includes a left sound generating module and a right sound generating module, and two ends of the clamping force adjusting structure are respectively connected to the sound generating module and the right sound generating module.

[0025] The technical solution of the present invention is to open an opening penetrating the upper and lower surfaces of the headband on the connecting section of the headband of the head-mounted earphone, provide a first elastic piece extending into the opening on the first clamping section of the headband, provide a second elastic piece extending into the opening on the second clamping section of the headband, and provide a movable slider on the connecting section. Thus, when the slider does not move into the opening, the equivalent width of the headband at the connecting section is the width of the connecting section, and the headband is more likely to produce elastic deformation at the connecting section. At this time, the force required to spread the first clamping section and the second clamping section to make their ends move away from each other is smaller; when the slider moves relative to the connecting section into the opening and is clamped and matched with the first elastic piece and the second elastic piece, the first elastic piece and the second elastic piece are connected by the slider, and the equivalent width of the headband at the connecting section is the sum of the width of the connecting section and the width of the part of the slider extending into the opening. The headband is more difficult to produce elastic deformation at the connecting section. At this time, the force required to spread the first clamping section and the second clamping section to make their ends move away from each other is greater. Therefore, when the head-mounted earphone with this headband structure is worn on the user's head, the user can adjust the clamping force of the headband on the head by moving the slider: for users with a small head circumference, the slider can be moved into the opening to be clamped with the first elastic piece and the second elastic piece to enhance the clamping force of the headband, making the wearing feeling of the head-mounted earphone tighter to fit the user's small head circumference. For users with a large head circumference, the slider can be moved back to the connecting section to reduce the clamping force of the headband, making the wearing feeling of the head-mounted earphone looser to fit the user's large head circumference. This can improve the wearing experience of users with different head circumferences when wearing the head-mounted earphone with this headband structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0027] Figure 1 Structural schematic diagram of the head-mounted earphone of the present invention;

[0028] Figure 2 is Figure 1 exploded structure diagram of the head-mounted earphone in;

[0029] Figure 3 is Figure 2 structural schematic diagram of the clamping force adjustment structure in one perspective;

[0030] Figure 4 is Figure 2 structural schematic diagram of the clamping force adjustment structure in another perspective;

[0031] Figure 5 isFigure 3 Side view of the clamping force adjustment structure;

[0032] Figure 6 is Figure 3 Schematic diagram of the structure of the middle headband;

[0033] Figure 7 is Figure 3 Schematic diagram of the structure of the middle slider.

[0034] Explanation of the reference numerals in the drawings:

[0035]

[0036]

[0037] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments

[0038] 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 shall fall within the protection scope of the present invention.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0040] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. The meanings of "and / or" and "and / or" that appear throughout the text are the same, both indicating the inclusion of three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] An embodiment of the present invention provides a clamping force adjustment structure, which is applied to a head-mounted earphone. Combining Figure 1 and Figure 2 As shown, the head-mounted earphone includes a crossbeam member and a left sound module and a right sound module connected by the crossbeam member. Both the left sound module and the right sound module include earcups and moving coil sound units provided in the earcups. Both ends of the crossbeam member are connected to the earcups of the left sound module and the earcups of the right sound module. When the head-mounted earphone is worn on the user's head, the earcups of the left sound module and the earcups of the right sound module respectively cover the user's left ear and right ear, and the crossbeam member bypasses the user's head, playing a role in clamping the user's head by the left and right earcups and preventing the head-mounted earphone from slipping. Combining Figures 2 to 4 As shown, the crossbeam member of the head-mounted earphone in this embodiment includes the above-mentioned clamping force adjustment structure. The clamping force adjustment structure includes a headband 1 and a slider 2. The headband 1 includes a first clamping section 11, a connecting section 12, and a second clamping section 13 connected in sequence. The connecting section 12 is provided with an opening 12a penetrating through the upper and lower surfaces of the headband 1. The first clamping section 11 is provided with a first elastic piece 111 extending into the opening 12a, and the second clamping section 13 is provided with a second elastic piece 131 extending into the opening 12a. Both the first elastic piece 111 and the second elastic piece 131 are spaced from the connecting section 12; the slider 2 is movably connected to the connecting section 12 and can move into the opening 12a to be snap-fitted with the first elastic piece 111 and the second elastic piece 131.

[0043] In this embodiment, the headband 1 is connected to the left and right sound modules of the above-mentioned head-mounted earphone and is used to realize the wearing and fixing of the left and right sound modules on the user's head. The material of the headband 1 is steel, and its steel model can be No. 301, No. 304, etc., so that the headband 1 can generate a certain deformation during wearing and clamp and fix on the user's head, and can also elastically recover to its original state when removed, so as to be repeatedly used without being easily deformed, enabling the head-mounted earphone to be worn and used multiple times.

[0044] The headband 1 includes three structures: a first clamping section 11, a connecting section 12, and a second clamping section 13. One end of the first clamping section 11 and the second clamping section 13 away from the connecting section 12 are respectively connected to the left and right sound modules described above. The connecting section 12 is located between the first clamping section 11 and the second clamping section 13 and connects the first clamping section 11 and the second clamping section 13. The first clamping section 11, the connecting section 12, and the second clamping section 13 can be an integrally formed structure. At this time, no interface is formed at the connection between the connecting section 12 and the first clamping section 11 and the second clamping section 13. The first clamping section 11, the connecting section 12, and the second clamping section 13 can adopt an equal-width design. However, since an opening 12a is provided at the connecting section 12, the actual width of the connecting section 12 is smaller than that of the first clamping section 11 and the second clamping section 13. The sum of the width of the connecting section 12 and the width of the opening 12a can be equal to the width of the first clamping section 11 and / or the width of the second clamping section 13.

[0045] On one side of the first clamping section 11 facing the second clamping section 13, a first elastic piece 111 extending into the opening 12a is provided. On one side of the second clamping section 13 facing the first clamping section 11, a second elastic piece 131 extending into the opening 12a is provided. The first elastic piece 111 and the second elastic piece 131 are arranged at intervals and are not directly connected, and the first elastic piece 111 and the second elastic piece 131 are also arranged at intervals and are not directly connected to the connecting section 12. The first elastic piece 111 and the second elastic piece 131 are clamped and matched with the slider 2 by means of cooperation between hooks and hooks, cooperation between rail grooves, etc. At the same time, the slider 2 can move relative to the first elastic piece 111 and the second elastic piece 131 towards the connecting section 12. For example, T-shaped grooves are provided on both the first elastic piece 111 and the second elastic piece 131, and two T-shaped sliding rails are correspondingly provided at both ends of the slider 2. Each T-shaped sliding rail is slidably limited in a T-shaped groove, so that the slider 2 can be clamped and limitedly matched with the first elastic piece 111 and the second elastic piece 131.

[0046] The slider 2 can be located on the side of the lower surface of the headband 1 facing away from the upper surface of the headband 1, or on the side of the upper surface of the headband 1 facing away from the lower surface of the headband 1. Part of the structure of the slider 2 can be located in the opening 12a. The slider 2 can be movably connected to the connecting section 12 by means of cooperation between rail grooves, etc. For example, the connecting section 12 is provided with a sliding rail extending in the width direction of the connecting section 12, and the slider 2 is provided with a sliding groove 121a slidably connected to the sliding rail. The slider 2 can move relative to the connecting section 12 along the width direction of the connecting section 12 into the opening 12a. When the slider 2 moves into the opening 12a, part of its structure can still be slidably matched with the connecting section 12. At this time, one end of the slider 2 is slidably matched with the connecting section 12, and the other end of the slider 2 is located in the opening 12a and is clamped and matched with the first elastic piece 111 and the second elastic piece 131. By moving the slider 2, the slider 2 can enter or leave the opening 12a, so that the slider 2 is clamped or separated from the first elastic piece 111 and the second elastic piece 131, thereby adjusting the equivalent width of the headband 1 at the connecting section 12.

[0047] In this embodiment, an opening 12a that passes through the upper and lower surfaces of the headband 1 is opened on the connecting section 12 of the headband 1 of the headset, a first elastic piece 111 that extends into the opening 12a is provided on the first clamping section 11 of the headband 1, a second elastic piece 131 that extends into the opening 12a is provided on the second clamping section 13 of the headband 1, and a movable slider 2 is provided on the connecting section 12. Therefore, when the slider 2 has not moved into the opening 12a, the equivalent width of the headband 1 at the connecting section 12 is the width of the connecting section 12, and the headband 1 is more likely to produce elastic deformation at the connecting section 12. At this time, the force required to open the first clamping section 11 and the second clamping section 13 to separate their ends is smaller; when the slider 2 moves to the opening 12a relative to the connecting section 12 and engages with the first elastic sheet 111 and the second elastic sheet 131, the first elastic sheet 111 and the second elastic sheet 131 are connected through the slider 2, and the equivalent width of the headband 1 at the connecting section 12 is the sum of the width of the connecting section 12 and the width of the portion of the slider 2 extending into the opening 12a. It is more difficult for the headband 1 to produce elastic deformation at the connecting section 12, and at this time, the force required to open the first clamping section 11 and the second clamping section 13 to separate their ends is larger. Therefore, when the headset with the headband 1 structure is worn on the user's head, the user can adjust the clamping force of the headband 1 on the head by moving the slider 2: for users with small head circumference, the slider 2 can be moved into the opening 12a to engage with the first elastic sheet 111 and the second elastic sheet 131 to enhance the clamping force of the headband 1, so that the headset feels tighter to fit the user's small head circumference. For users with large head circumference, the slider 2 can be moved back to the connecting section 12 to reduce the clamping force of the headband 1, so that the headset feels looser to fit the user's large head circumference, which can improve the wearing experience of users with different head circumferences wearing the headset with the headband 1 structure.

[0048] In one embodiment of the present invention, a first connecting portion 1111 is provided at one end of the first elastic sheet 111 away from the first clamping section 11, a second connecting portion 1311 is provided at one end of the second elastic sheet 131 away from the second clamping section 13, third connecting portions 21 are provided at both ends of the slider 2, and the connecting section 12 is provided with a fourth connecting portion 121 slidably connected to the third connecting portion 21; when the slider 2 is engaged with the first elastic sheet 111 and the second elastic sheet 131, one third connecting portion 21 is slidably limited with the first connecting portion 1111, and the other third connecting portion 21 is slidably limited with the second connecting portion 1311.

[0049] In this embodiment, the slider 2 is connected to the connecting section 12, the first elastic piece 111, and the second elastic piece 131 through the third connecting portion 21. That is, only one third connecting portion 21 needs to be provided on the slider 2. Through this third connecting portion 21, the connection with the first elastic piece 111, the second elastic piece 131, and the connecting section 12 can be achieved simultaneously. In this way, when the slider 2 needs to be slidably mated with the connecting portion, and when the slider 2 is snap-fitted with the first elastic piece 111 and the second elastic piece 131, it is avoided that different connecting structures are required to achieve the connection, which can reduce the number of components of this clamping force adjusting structure and reduce the material cost of this clamping force adjusting structure. When the third connecting portion 21 is snap-fitted with the first elastic piece 111 and the second elastic piece 131, the third connecting portion 21 can also slide relative to the first elastic piece 111 and the second elastic piece 131 under the action of an external force. That is, when the third connecting portion 21 is snap-fitted with the first connecting portion 1111 and the second connecting portion 1311, the third connecting portion 21 has a clearance fit with the first connecting portion 1111 and the second connecting portion 1311, and the third connecting portion 21 can slide relative to the first connecting portion 1111 and the second connecting portion 1311. Exemplarily, in combination with Figure 3 and Figure 4 shown, the first connecting portion 1111, the second connecting portion 1311, and the third connecting portion 21 are all hook structures, and the cross-sectional shape of the hook structure is U-shaped. Thus, a guiding groove can be formed by using the inner space of the U-shaped hook structure. When the third connecting portion 21 is snap-fitted with the first connecting portion 1111 and the second connecting portion 1311, the third connecting structure can be guidingly mated with the first connecting portion 1111 and the second connecting portion 1311 and slide relative to them.

[0050] In an embodiment of the present invention, in combination with Figures 3 to 5 shown, at least part of the structures of the above-mentioned first connecting portion 1111, second connecting portion 1311, and third connecting portion 21 are provided as bent sections, and the third connecting portion 21 is adapted to the first connecting portion 1111 and the second connecting portion 1311.

[0051] In this embodiment, at least part of the structures of the first connecting portion 1111, the second connecting portion 1311, and the third connecting portion 21 are provided as bent sections, so that the first connecting portion 1111, the second connecting portion 1311, and the third connecting portion 21 are bent into hook structures. The third connecting portion 21 can be snap-fitted with the first connecting portion 1111 and the second connecting portion 1311, and can slide relative to the first connecting portion 1111 and the second connecting portion 1311, realizing the movement of the slider 2 in the width direction of the headband 1, adjusting the equivalent width of the headband 1 at the connection, and realizing the clamping force adjustment of this headband 1.

[0052] Refer to Figure 5 , Figure 5 The left half area and the right area in [reference] respectively show two structural forms of the third connecting portion 21, where as Figure 5As shown in the right half, the third connection part 21 is bent to form a U-shaped cross-sectional structure. At this time, the second connection part 1311 that is engaged with the third connection part 21 is bent to form a U-shaped cross-sectional structure. The third connection part 21 and the second connection are mutually limited and can slide relative to each other. At this time, the first connection part 1111 can also be bent to form a U-shaped cross-sectional structure to form an engagement with the third connection part 21. Figure 5 As shown in the middle left half, the third connection part 21 is bent to form a structure with a spiral-like cross-sectional shape. At this time, the cross-sectional shape of the structure formed by bending the first connection part 1111 that is snap-fitted with the third connection part 21 is also spiral-like. The third connection part 21 and the first connection are mutually limited and can slide relative to each other. At this time, the second connection part 1311 can also be bent to form a structure with a spiral-like cross-sectional shape to form a snap-fit with the third connection part 21.

[0053] In one embodiment of the present invention, Figure 3 and Figure 4 As shown, the structure of the first connection portion 1111 and the structure of the second connection portion 1311 are arranged in mirror symmetry.

[0054] In this embodiment, the two ends of the slider 2 extend toward the first clamping section 11 and the second clamping section 13 respectively, and the two ends of the slider 2 are bent to form a third connecting portion 21. The structures of the third connecting portions 21 at both ends of the slider 2 are arranged in a mirror-symmetrical manner, and the structures of the first connecting portion 1111 and the second connecting portion 1311 respectively engaged with the two third connecting portions 21 are also arranged in a mirror-symmetrical manner. In this way, the two third connecting portions 21 can slide and limit with the first connecting portion 1111 and the second connecting portion 1311 respectively, thereby realizing the movement and adjustment of the slider 2. The structure of the first connection part 1111 and the structure of the second connection part 1311 are arranged in mirror symmetry, and the direction in which the third connection part 21 and the first connection part 1111 are clamped together is opposite to the direction in which the third connection part 21 and the second connection part 1311 are clamped together. In this way, when the headband 1 is stretched open and the end of the first clamping section 11 is separated from the end of the second clamping section 13, the third connection part 21 can be clamped with the first connection part 1111 and the second connection part 1311 at the same time, so that the first clamping section 11 and the second clamping section 13 are tightly connected through the slider 2, and the first clamping section 11 and the second clamping section 13 are pulled against each other, so that a stronger external force needs to be applied to stretch the headband 1, which is equivalent to enhancing the clamping force of the headband 1 and realizing the clamping force adjustment of the headband 1.

[0055] In one embodiment of the present invention, Figure 4 , Figure 6 as well as Figure 7As shown, the fourth connecting portion 121 includes two limiting blocks 1211 provided on the connecting section 12. Each limiting block 1211 and the connecting section 12 enclose a chute 121a. When the slider 2 is connected to the connecting section 12, each third connecting portion 21 is slidably limited within a chute 121a.

[0056] In this embodiment, third connecting portions 21 are provided at both the end of the slider 2 close to the first clamping section 11 and the end of the slider 2 close to the second clamping section 13. Two limiting blocks 1211 are provided on the connecting section 12 and are oppositely arranged. When the two limiting blocks 1211 are connected to the connecting section 12, the two limiting blocks 1211 and the connecting section 12 cooperate to form two chutes 121a with opposite notch orientations. The chute 121a is a through-channel structure, so that the third connecting portion 21 can slide along the chute 121a in the direction towards the opening 12a. Guide grooves are formed after the first connecting portion 1111 and the second connecting portion 1311 are bent. The guide groove of the first connecting portion 1111 communicates with a chute 121a to form a guide channel, and the guide groove of the second connecting portion 1311 communicates with the other chute 121a to form another guide through-channel. The two third connecting portions 21 are respectively slidably limited within the two guide channels, thus realizing the sliding limit cooperation between the third connecting portion 21, the connecting section 12, the first elastic piece 111, and the second elastic piece 131. Among them, the limiting block 1211 can be fixedly connected to the connecting section 12 by welding, bonding, etc. The structure of the fourth connecting portion 121 provided in this embodiment, which includes two limiting blocks 1211, is simple and practical, and is beneficial to saving the manufacturing cost of the clamping force adjustment structure.

[0057] In an embodiment of the present invention, in combination with Figure 3 , Figure 4 and Figure 6 as shown, the above-mentioned first clamping section 11 is provided with a plurality of first elastic pieces 111 arranged in sequence along the width direction of the headband 1, and the second clamping section 13 is provided with a plurality of second elastic pieces 131 arranged in sequence along the width direction of the headband 1. Each first elastic piece 111 is oppositely arranged with a second elastic piece 131 to form an elastic piece pair. When the slider 2 moves into the opening 12a, the slider 2 is clamped and cooperated with at least one elastic piece pair.

[0058] In this embodiment, the plurality of first elastic pieces 111 can be arranged at equal or unequal intervals, and the plurality of second elastic pieces 131 can be arranged at equal or unequal intervals. Each first elastic piece 111 is arranged opposite to a second elastic piece 131, and the structure of each elastic piece can be mirror-symmetric with the structure of a second elastic piece 131. Each first elastic piece 111 and a second elastic piece 131 cooperate to form an elastic piece pair. In this way, the plurality of first elastic pieces 111 and the plurality of second elastic pieces 131 cooperate to form a plurality of elastic piece pairs. When the slider 2 moves relative to the connecting portion into the opening 12a, the slider 2 sequentially passes through each elastic piece pair and engages with the elastic piece pair it passes through. As the number of elastic piece pairs passed by the slider 2 increases, the width of the structure of the slider 2 within the opening 12a becomes wider, and the equivalent width of the headband 1 at the connecting section 12 becomes larger. Until the slider 2 covers the opening 12a, the slider 2 engages with all the elastic piece pairs, and the equivalent width of the headband 1 at the connection reaches the maximum. During the process that the slider 2 moves into the opening 12a and engages with more and more elastic piece pairs, the equivalent width of the headband 1 at the connecting section 12 gradually increases, and the clamping strength exhibited by the headband 1 also gradually increases. By changing the number of the provided elastic piece pairs, the adjustment precision of the equivalent width of the headband 1 at the connecting section 12 can be correspondingly changed, so as to realize a more precise adjustment of the clamping strength of the headband 1.

[0059] To facilitate the description of this embodiment, taking the width of the connecting section 12 being equal to the width of the opening 12a and the number of elastic piece pairs being three as an example, each elastic piece pair is arranged in sequence along the width direction of the headband 1. The elastic piece pair closest to the connecting section 12 is the first elastic piece pair, the elastic piece pair farthest from the connecting section 12 is the third elastic piece pair, and the middle elastic piece pair is the second elastic piece pair. When the slider 2 engages with all the elastic piece pairs, the clamping strength exhibited by the headband 1 is 100%; when the slider 2 is only connected to the connecting section 12 and not connected to any elastic piece pair, the clamping strength exhibited by the headband 1 is 50%; when the slider 2 engages with the first elastic piece pair, the clamping strength exhibited by the headband 1 is 67%; when the slider 2 engages with the second elastic piece pair, the clamping strength exhibited by the headband 1 is 84%. In this way, by setting three elastic piece groups, the clamping strength of the headset can be adjusted among four gears of 50%, 67%, 84% and 100%, so as to meet the comfortable wearing requirements of users with different head circumferences for the headset. When the number of elastic piece pairs is more, the number of gears of the adjustable clamping strength of the corresponding headband 1 is also more, and the adjustment of the clamping force of the headband 1 will be more precise, and it will be easier to match the wearing requirements of different users for the headset.

[0060] In an embodiment of the present invention, in combination with Figure 3 , Figure 4 and Figure 6As shown, the above-mentioned connecting section 12 is provided with two openings 12a, and the two openings 12a are arranged offset in the width direction of the headband 1; the first clamping section 11 is provided with at least two first elastic pieces 111 respectively extending into the two openings 12a, and the second clamping section 13 is provided with at least two second elastic pieces 131 respectively extending into the two openings 12a; the connecting section 12 is provided with two sliders 2, and each slider 2 can move into one of the openings 12a and is clamped and matched with the first elastic piece 111 and the second elastic piece 131 in the opening 12a.

[0061] In this embodiment, the opening 12a can be opened at the middle position of the connecting section 12 or at the edge of the connecting section 12. Taking the opening 12a opened at the edge of the connecting section 12 as an example, the connecting section 12 has two opposite edges, as Figure 3 shown, one opening 12a is opened at one edge of the connecting section 12 and forms a notch structure, and the other opening 12a is opened at the other edge of the connecting section 12 and forms another notch structure. A part of the connecting section 12 connecting the first clamping section 11 and the second clamping section 13 is reserved between the two notches. The first elastic piece 111 and the second elastic piece 131 are arranged in each opening 12a in the manner of the above embodiment, and the connecting section 12 is also provided with two sliders 2 in the manner of the above embodiment. Each slider 2 is slidably connected to the connecting section 12 and can slide into one of the openings 12a; each slider 2 is used for being clamped and matched with the first elastic piece 111 and the second elastic piece 131 in one of the openings 12a to adjust the equivalent width of the headband 1 at the connecting section 12. Through the setting of the two offset openings 12a in this embodiment, when the two sliders 2 move in the two openings 12a, the double adjustment of the equivalent width of the connecting section 12 can be realized at the two openings 12a, improving the adjustment accuracy of the clamping force of the headband 1 and the applicability of the corresponding head-mounted earphone. In addition, in this embodiment, multiple first elastic pieces 111 and multiple second elastic pieces 131 can be arranged in each opening 12a according to the setting manner of the first elastic piece 111 and the second elastic piece 131 in the previous embodiment, and similarly, the adjustment accuracy of the clamping force of the headband 1 can be further improved.

[0062] In an embodiment of the present invention, in combination with Figures 2 to 4 shown, the above-mentioned clamping force adjustment structure further includes a dial block 22 provided on the slider 2. The dial block 22 is located between the first elastic piece 111 and the second elastic piece 131, and at least part of the structure of the dial block 22 protrudes from the upper surface of the headband 1.

[0063] In this embodiment, the shifting block 22 can be connected to the sliding block 2 by means such as welding, plugging, bonding, etc. For example, the sliding block 2 is provided with a protrusion extending toward the upper surface of the headband 1, and the shifting block 22 is provided with a jack, and the protrusion is plugged into the jack to fixedly install the shifting block 22 and the sliding block 2. At least a part of the structure of the shifting block 22 protrudes from the upper surface of the headband 1: on the one hand, it can avoid the situation that when the shifting block 22 protrudes downward toward the headband 1, the convex block may come into contact with the user's head and affect the wearing comfort of the corresponding head-mounted earphone; on the other hand, it can avoid the convex block being hidden in the opening 12a, resulting in the shifting block 22 being not easily shifted from the outside of the headband 1. Therefore, this embodiment can improve the convenience of using the shifting block 22.

[0064] In an embodiment of the present invention, as shown in Figure 1 and Figure 2 shown, the clamping force adjusting structure further includes a flexible sleeve 3 wrapped around the headband 1. The flexible sleeve 3 is provided with a slot 3a, and the shifting block 22 is limited in the slot 3a and can move along the slot 3a when the sliding block 2 moves.

[0065] In this embodiment, the flexible sleeve 3 has an inner cavity communicating with the outside, and the headband 1 passes through the inner cavity and is fixedly wrapped by the flexible sleeve 3. Thus, when the head-mounted earphone with the clamping force adjusting structure is worn, the flexible sleeve 3 will contact the user's head and avoid the steel headband 1 from contacting the user's head, thereby improving the wearing comfort of the head-mounted earphone. In addition, by providing the slot 3a on the flexible sleeve 3 for the shifting block 22 to be exposed and movable, it is convenient for the user to use the shifting block 22 and more conveniently adjust the clamping force of the head-mounted earphone. Among them, the material of the flexible sleeve 3 can be silicone, leather, etc.

[0066] The embodiment of the present invention also provides a head-mounted earphone. As shown in Figure 1 and Figure 2 shown, the head-mounted earphone includes a sound generating component and the above-mentioned clamping force adjusting structure. The sound generating component includes a left sound generating module and a right sound generating module. The two ends of the headband 1 of the clamping force adjusting structure are respectively connected to the left sound generating module and the right sound generating module.

[0067] In this embodiment, both the left sound generating module and the right sound generating module include an ear cup and a dynamic coil sound generating unit arranged in the ear cup. The two ends of the headband 1 are connected to the ear cups of the left sound generating module and the ear cups of the right sound generating module. When this head-mounted earphone is worn on the user's head, the ear cups of the left sound generating module and the ear cups of the right sound generating module respectively cover the user's left ear and right ear, and the headband 1 and the flexible sleeve 3 bypass the user's head top, playing a role in clamping the user's head by the left ear cup and the right ear cup and preventing the head-mounted earphone from slipping. The specific structure of the clamping force adjusting structure in this embodiment refers to the above-mentioned embodiment. Since the head-mounted earphone adopts all the technical solutions of the above-mentioned all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated one by one here.

[0068] The above are only alternative embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A clamping force adjustment structure, which is applied to a head-mounted earphone, and is characterized in that The clamping force adjustment structure includes: A headband, the headband includes a first clamping section, a connecting section, and a second clamping section connected in sequence. The connecting section is provided with an opening penetrating the upper and lower surfaces of the headband. The first clamping section is provided with a first elastic piece extending into the opening, and the second clamping section is provided with a second elastic piece extending into the opening. Both the first elastic piece and the second elastic piece are spaced from the connecting section; and A slider, the slider is movably connected to the connecting section and can move into the opening to be clamped and matched with the first elastic piece and the second elastic piece; Wherein, the slider can enter or leave the opening along the width direction of the connecting section to adjust the equivalent width of the headband at the connecting section.

2. The clamping force adjusting structure according to claim 1, wherein, One end of the first elastic piece away from the first clamping section is provided with a first connecting portion, one end of the second elastic piece away from the second clamping section is provided with a second connecting portion, both ends of the slider are provided with third connecting portions, and the connecting section is provided with a fourth connecting portion slidably connected to the third connecting portion; When the slider is clamped with the first elastic piece and the second elastic piece, one of the third connecting portions is slidably limited with the first connecting portion, and the other third connecting portion is slidably limited with the second connecting portion.

3. The clamping force adjusting structure according to claim 2, wherein, At least part of the structures of the first connecting portion, the second connecting portion, and the third connecting portion are arranged as bent sections, and the third connecting portion is adapted to the first connecting portion and the second connecting portion.

4. The clamping force adjusting structure according to claim 3, characterized in that, The structure of the first connecting portion is mirror-symmetrically arranged with the structure of the second connecting portion.

5. The clamping force adjusting structure according to claim 2, wherein, The fourth connecting portion includes two limiting blocks provided on the connecting section, and each limiting block and the connecting section enclose a sliding groove; When the slider is connected to the connecting section, each of the third connecting portions is slidably limited in one of the sliding grooves.

6. The clamping force adjusting structure according to any one of claims 1 to 5, characterized in that The first clamping section is provided with a plurality of the first elastic pieces arranged in sequence along the width direction of the headband, and the second clamping section is provided with a plurality of the second elastic pieces arranged in sequence along the width direction of the headband. Each of the first elastic pieces is arranged opposite to one of the second elastic pieces to form an elastic piece pair; When the slider moves into the opening, the slider is clamped and matched with at least one of the elastic piece pairs.

7. The clamping force adjusting structure according to any one of claims 1 to 5, characterized in that The connecting section is provided with two openings, and the two openings are arranged in a staggered manner in the width direction of the headband; The first clamping section is provided with at least two of the first elastic pieces respectively extending into the two openings, and the second clamping section is provided with at least two of the second elastic pieces respectively extending into the two openings; The connecting section is provided with two sliders, and each slider can move into one of the openings and be clamped and matched with the first elastic piece and the second elastic piece in the opening.

8. The clamping force adjusting structure according to any one of claims 1 to 5, characterized in that, The clamping force adjustment structure further includes a dial block provided on the slider. The dial block is located between the first elastic piece and the second elastic piece, and at least part of the structure of the dial block protrudes from the upper surface of the headband.

9. The clamping force adjusting structure according to claim 8, wherein The clamping force adjustment structure further includes a flexible sleeve wrapped around the headband. The flexible sleeve is provided with a strip hole, and the dial block is limited in the strip hole and can move along the strip hole when the slider moves.

10. A head-mounted earphone, characterized in that, The head-mounted earphone includes: The clamping force adjusting structure according to any one of claims 1 to 9; and A sound generating assembly, the sound generating assembly comprising a left sound generating module and a right sound generating module, and two ends of the clamping force adjusting structure are respectively connected to the left sound generating module and the right sound generating module.

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