A head pad adjustment device and a headphone

Abstract

The utility model discloses a headrest pad adjusting device and head -wearing earphone relates to head -wearing earphone technical field, to realize above -mentioned purpose, the headrest pad adjusting device that the utility model provides includes headband, press unlocking mechanism and headrest, first locking piece is fixedly arranged on the headband, press unlocking mechanism includes sliding block and second locking piece, and second locking piece is movably arranged in the sliding block, and the sliding block is connected with first locking piece slidingly, and second locking piece is configured to be close or far from first locking piece movement to with first locking piece locking or disengaging, and the headrest is fixedly connected with the sliding block.

Description

Technical Field

[0001] This utility model relates to the field of headphone technology, and in particular to a headrest adjustment device and a headphone. Background Technology

[0002] Over-ear headphones are a type of headphone worn on the head rather than inserted into the ear canal. They typically consist of a flexible U-shaped headband and earphone bodies at both ends of the headband. The elasticity of the headband allows the earphone bodies to clamp around the user's head and surround the ears, providing a wider soundstage and a comfortable wearing experience. The headrest is a key component located at the top of the headband and in contact with the user's head. Its design directly affects wearing comfort. The headrest can be made of soft and elastic materials to conform to the user's head, aiding in the fixation of the headphones and providing a comfortable wearing experience.

[0003] In related technologies, the headband is fixed to the headband. By making the headband adjustable, the clamping space of the headband can be changed, allowing the headband to adapt to different head sizes. This ensures the headphones fit securely on the user's head, preventing them from falling off and improving comfort. The problem is that this adjustable headband design makes the headband structure relatively fragile and prone to wear and tear, affecting wearability, and the adjustment operation is inconvenient. Utility Model Content

[0004] The main purpose of this invention is to provide a headband adjustment device and a headset, which aims to solve the problem that making the headband structure more fragile and prone to wear and tear due to the telescopic and adjustable mechanism, thereby improving the convenience of adjustment.

[0005] To achieve the above objectives, the headrest adjustment device proposed in this utility model includes a headband, a press-to-unlock mechanism, and a headrest; a first locking member is fixedly provided on the headband; the press-to-unlock mechanism includes a sliding block and a second locking member, the second locking member being movably disposed on the sliding block, the sliding block being slidably connected to the first locking member, and the second locking member being configured to move closer to or further away from the first locking member to lock or disengage from the first locking member; the headrest is fixedly connected to the sliding block.

[0006] This utility model also proposes a headset, which includes a headrest adjustment device as described in the above embodiments. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0008] Figure 1 A schematic diagram of an embodiment of the headrest adjustment device provided by this utility model;

[0009] Figure 2 for Figure 1 Cross-sectional view of the headrest adjustment device;

[0010] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0011] Figure 4 for Figure 1 Exploded view of the push-to-unlock mechanism;

[0012] Figure 5 for Figure 1 Front view of the push-to-unlock mechanism;

[0013] Figure 6 for Figure 5 Cross-sectional view along line B-B';

[0014] Figure 7 for Figure 5 A cross-sectional view of the middle sliding block along line B-B';

[0015] Figure 8 for Figure 4 A schematic diagram of the structure of the second locking component;

[0016] Figure 9 for Figure 1 A schematic diagram of the structure of the first locking component;

[0017] Figure 10 Exploded view of another embodiment of the press-to-unlock mechanism provided by this utility model;

[0018] Figure 11 for Figure 10 Another perspective of the exploded view of the push-to-unlock mechanism;

[0019] Figure 12 for Figure 10 Cross-sectional view of the push-to-unlock mechanism;

[0020] Figure 13 This is a partial schematic diagram of the headphones provided by this utility model.

[0021] Explanation of icon numbers:

[0022] 100. Headrest adjustment device;

[0023] 1. Headband; 11. First locking element; 11a. Guide groove; 11b. Snap-fit ​​groove; 111. Stop element;

[0024] 2. Press-to-unlock mechanism; 21. Sliding block; 211. Guide rail; 212. Mounting post; 213. Buckle; 21a. First through hole; 21b. Sliding hole; 21c. Sliding groove; 22. Second locking element; 221. Snap-fit ​​protrusion; 22a. Second through hole; 23. Spring;

[0025] 3. Headrest;

[0026] 200. Headphone body.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] This utility model proposes a headrest adjustment device 100.

[0032] Please see Figures 1 to 3 In one embodiment of this utility model, the headrest adjustment device 100 includes a headband 1, a press-to-unlock mechanism 2, and a headrest 3. A first locking member 11 is fixedly provided on the headband 1. Please refer to [link to relevant documentation]. Figure 3 and Figure 4 The press-to-unlock mechanism 2 includes a sliding block 21 and a second locking member 22. The second locking member 22 is movably disposed on the sliding block 21. The sliding block 21 is slidably connected to the first locking member 11. The second locking member 22 is configured to move closer to or further away from the first locking member 11 to lock or disengage from the first locking member 11. The head pad 3 is fixedly connected to the sliding block 21.

[0033] In this embodiment, the headrest adjustment device 100 includes a headband 1, a press-to-unlock mechanism 2, and a headrest 3 (to clearly show the detailed features of the press-to-unlock mechanism 2, Figures 1 to 3 (Headrest 3 not shown) A first locking element 11 is fixedly provided on the headband 1. The headband 1 is one of the key components of the headphones, used to support the headphone body 200 and provide the clamping force required to fix the headphone body 200 to the user's head. It can be made of a material with a certain degree of elasticity, such as elastic plastic or metal alloy, so that the headphone body 200 can firmly clamp the user's head through elasticity. The press-to-unlock mechanism 2 is the core component of this utility model, used to realize the adjustment and locking functions of the headrest 3. Its structure is ingeniously designed and easy to operate.

[0034] Specifically, the press-to-unlock mechanism 2 includes a sliding block 21 and a second locking member 22. A headrest 3 is fixedly connected to the sliding block 21. The headrest 3 can be made of a soft and elastic material, such as memory foam, and its surface is covered with a skin-friendly fabric to improve wearing comfort. The second locking member 22 is movably mounted on the sliding block 21. Optionally, a hole or groove can be provided on the sliding block 21, and the second locking member 22 can be inserted into the hole or groove to movably mount the second locking member 22 on the sliding block 21. Alternatively, a guide rail can be provided on the second locking member 22, and a guide groove can be provided on the sliding block 21. The guide rail and guide groove slide together to movably mount the second locking member 22 on the sliding block 21.

[0035] For example, please refer to Figures 10 to 12 In one embodiment, the sliding block 21 is arranged in the shape of an incline. The center of the incline sliding block 21 is formed with a first through hole 21a for the first locking member 11 to pass through. Since the sliding block 21 is in the shape of an incline, a notch is formed on one side wall of the first through hole 21a. Therefore, the first locking member 11 can leave the first through hole 21a from the notch. In this way, the sliding block 21 and the head pad 3 can be easily and quickly removed from the headband 1 and the first locking member 11 for easy replacement. The inner wall of the first through hole 21a is provided with a sliding hole 21b communicating with the outside and a sliding groove 21c extending radially along the first through hole 21a. The sliding hole 21b and the sliding groove 21c are connected. The second locking member 22 has an L-shaped portion that extends into the sliding hole 21b and the sliding groove 21c. This portion is provided with a snap-fit ​​protrusion 221. The first locking member 11 is provided with a rack, and a plurality of snap-fit ​​grooves 11b distributed along the length direction of the first locking member 11 are formed on the rack. The snap-fit ​​protrusion 221 can snap-fit ​​with the snap-fit ​​grooves 11b. The first locking member 11 is provided with a guide groove 11a extending along the length direction of the first locking member 11. The side wall of the first through hole 21a is also provided with a guide rail 211 extending axially along the first through hole 21a. The first locking member 11 passes through the first through hole 21a and the guide rail 211 is slidably connected to the inner wall of the guide groove 11a. It should be noted that the guide groove 11a can be extended along the direction of gravity, and under the action of gravity, the snap-fit ​​protrusion 221 on the second locking member 22 falls into the snap-fit ​​groove 11b. Alternatively, an elastic member can be further provided, which connects the second locking member 22 to the inner wall of the first through hole 21a facing the sliding hole 21b. Under the action of the elastic force of the elastic member, the snap-fit ​​protrusion 221 on the second locking member 22 snaps into the snap-fit ​​groove 11b.

[0036] The sliding block 21 is a key component of the press-to-unlock mechanism 2. Its shape matches the first locking member 11 on the headband 1, and it can slide along the first locking member 11. The sliding block 21 can be made of high-strength plastic or aluminum alloy to ensure its structural strength and wear resistance. Alternatively, please refer to... Figure 1 and Figure 2The first locking member 11 can be fitted to the surface of the headband 1 to reduce space occupation and structural complexity. The first locking member 11 and the headband 1 can pass through the sliding block 21 simultaneously, and the sliding block 21 can slide along the first locking member 11 and the headband 1. Preferably, the sliding connection between the sliding block 21 and the headband 1 can be achieved by providing a guide groove 11a on the first locking member 11 and a matching guide rail 211 on the sliding block 21. The guide rail 211 can be straight or curved to accommodate different headband 1 shapes. When the position of the head pad 3 needs to be adjusted, the user simply presses the second locking member 22 to disengage it from the first locking member 11, then pushes the sliding block 21 to slide on the headband 1. After adjusting to the appropriate position, the user releases the second locking member 22, which re-locks the second locking member 22 with the first locking member 11, thus fixing the position of the sliding block 21 and completing the adjustment of the head pad 3 position.

[0037] The second locking member 22 can be locked to the first locking member 11 through mechanical engagement, friction between them, or magnetic attraction. When the second locking member 22 is pressed, the first locking member 11 and the second locking member 22 move away from each other, thus weakening or eliminating the mechanical engagement, friction, or magnetic force, allowing the first locking member 11 to move relative to the second locking member 22. Optionally, one of the first locking member 11 and the second locking member 22 can be a pin, while the other has a hole. For example, a pin can be fixed to the second locking member 22, and multiple equally spaced holes can be provided on the first locking member 11. Pushing the second locking member 22 allows it to lock or disengage from the first locking member 11. The hole and pin can be aligned with the direction of gravity. When worn, gravity causes the pin to fall into the hole for locking. For adjustment, pressing the pin in the opposite direction of gravity disengages it from the hole, unlocking the device. Optionally, the first locking member 11 can be provided with a friction surface extending along the headband 1, and the second locking member 22 can be provided with a friction element. Both the friction surface and the friction element are made of wear-resistant material and have an anti-slip treatment, such as an anti-slip texture, to enhance the friction between them, so that they can lock together through friction after contact. Optionally, a first magnetic element can be provided on the first locking member 11, and a second magnetic element that can attract the first magnetic element can be provided on the second locking member 22. The first magnetic element can be a single magnet extending along the length of the headband 1, or it can be multiple magnets evenly spaced along the length of the headband 1. When the first magnetic element and the second magnetic element attract each other and stick together, the first locking member 11 and the second locking member 22 are locked. By pressing the second locking member 22 to move the first magnetic element and the second magnetic element away, the magnetic force between them weakens, and the first locking member 11 and the second locking member 22 are unlocked. It should be noted that, in this embodiment, locking means that the first locking member 11 and the second locking member 22 are relatively stationary, and the sliding block 21 cannot slide relative to the first locking member 11, so the position of the head pad 3 is fixed. Unlocking means that after the first locking member 11 and the second locking member 22 are disengaged, the sliding block 21 can slide on the headband 1, thereby driving the head pad 3 to move and adjusting the size of the space surrounded by the head pad 3. The meaning of locking and unlocking in the following text can be referred to this embodiment.

[0038] To allow adjustment of the head pad 3, at least one first locking member 11 and one press-to-unlock mechanism 2 are provided. One end of the head pad 3 is fixedly connected to the headband 1, and the other end is fixedly connected to the sliding block 21. Preferably, to improve wearing comfort and adjustment flexibility, this embodiment provides two first locking members 11, each wrapped around one end of the headband 1. Each first locking member 11 is provided with a corresponding press-to-unlock mechanism 2. Both ends of the head pad 3 are fixedly connected to a sliding block 21. In this way, the installation position of both ends of the head pad 3 on the headband 1 can be adjusted, thereby adjusting the size of the space surrounded by the head pad 3 to accommodate the head size of different people.

[0039] Based on the above description, the technical solution of this embodiment utilizes the relative sliding of the sliding block 21 and the headband 1 to adjust the size of the space surrounded by the head pad 3. The sliding block 21 is fixed or unlocked by locking or disengaging the second locking member 22 with the first locking member 11. This design avoids the structural fragility and easy wear of traditional headband 1 telescopic adjustment mechanisms, improves the convenience of head pad 3 adjustment operation, and ensures the secure wearing and comfort of the headphones.

[0040] Further, please refer to Figure 5 , Figure 7 and Figure 8 In one embodiment of the present invention, the sliding block 21 is provided with a first through hole 21a, and the side wall of the first through hole 21a is provided with a sliding hole 21b. The sliding hole 21b connects the first through hole 21a with the external space. The second locking member 22 is slidably inserted into the sliding hole 21b. A part of the second locking member 22 is located in the first through hole 21a and forms a second through hole 22a. The first through hole 21a and the second through hole 22a are connected. The first locking member 11 is sequentially inserted into the first through hole 21a and the second through hole 22a.

[0041] In this embodiment, to further enhance the structural stability and guiding performance of the headband adjustment device 100, a first through hole 21a is provided on the sliding block 21. The first through hole 21a allows the sliding block 21 to be tightly fitted onto the headband 1 and the first locking member 11, ensuring that the sliding block 21 slides more smoothly on the headband 1 and is less likely to disengage. A sliding hole 21b is provided on the side wall of the first through hole 21a, connecting the first through hole 21a to the external space. The design of the sliding hole 21b provides space for the installation and sliding of the second locking member 22, allowing the second locking member 22 to slide along the sliding axis within the sliding hole 21b, thereby realizing the locking and unlocking operation with the first locking member 11. When it is necessary to adjust the position of the headband 3, the second locking member 22 is pressed, causing it to slide within the sliding hole 21b, thereby disengaging from the locked state with the first locking member 11, and the sliding block 21 can then slide along the headband 1. After adjusting to the appropriate position, the second locking member 22 is released, and the second locking member 22 resets and relocks with the first locking member 11, thereby fixing the position of the sliding block 21. Therefore, the sliding connection between the first locking member 11 and the sliding block 21 is more reliable and the guiding effect is better. The first locking member 11 and the headband 1 are limited by the inner walls of the first through hole 21a and the second through hole 22a. The first locking member 11 can slide stably in the sliding block 21 and the second locking member 22, ensuring the stability of the sliding process, and the first locking member 11 is not easy to disengage from the sliding block 21 and the locking block.

[0042] Further, please refer to Figures 6 to 8 In one embodiment of the present invention, the press-to-unlock mechanism 2 further includes an elastic element, which connects an inner wall of the first through hole 21a facing the sliding hole 21b with the second locking element 22, and the elastic element is in a compressed state.

[0043] In this embodiment, when the second locking member 22 is pressed, the elastic member is compressed, storing elastic potential energy; when the second locking member 22 is released, the elastic member releases energy, pushing the second locking member 22 to reset, thereby achieving rapid locking with the first locking member 11. Specifically, the elastic member can be made of a spring 23, an elastic sheet, elastic rubber, or other materials with elastic restoring force. Preferably, this embodiment uses a spring 23, and a pivot is provided on the bottom wall of the slide groove 21c and the second locking member 22. The two ends of the spring 23 are respectively fitted onto a pivot for fixation. It can be understood that the pivot can be replaced by a blind hole to achieve the same fixation of the spring 23. Optionally, the elastic member can also be a spring sheet, which is an integrally formed structure with two elastic segments arranged at an angle. One segment is fixedly connected to the inner wall of the first mounting hole by means of bonding, screw connection, etc., and the other segment elastically abuts against the second locking member 22.

[0044] The restoring force of the elastic element in this embodiment can push the second locking element 22 to reset, so that the second locking element 22 locks with the first locking element 11, ensuring that the position of the head pad 3 is fixed. The user only needs to press the second locking element 22 when unlocking is required, which improves the convenience of operation.

[0045] Further, please refer to Figure 6 and Figure 7 In one embodiment of the present invention, the inner wall of the first through hole 21a is further provided with a sliding groove 21c, the sliding groove 21c extends along the axial direction of the sliding hole 21b and communicates with the sliding hole 21b, and the second locking member 22 is slidably connected to the inner wall of the sliding groove 21c.

[0046] In this embodiment, to further optimize the movement trajectory of the second locking member 22 and ensure the stability of its movement, a sliding groove 21c is provided that extends axially along the sliding hole 21b and communicates with the sliding hole 21b, providing a clear sliding path for the second locking member 22, thereby avoiding possible offset or jamming of the second locking member 22 during movement.

[0047] Specifically, the shape of the slide groove 21c is adapted to the second locking member 22, and the inner wall of the slide groove 21c slides in contact with the outer surface of the second locking member 22, allowing the second locking member 22 to slide smoothly within the slide groove 21c. Specifically, the second locking member 22 has protruding ribs on both sides, and a slide groove 21c is provided on each of the two side walls of the first through hole 21a adjacent to the slide hole 21b. The protruding ribs extend from the slide hole 21b into the slide groove 21c and slide in connection with the inner wall of the slide groove 21c. This design not only improves the movement accuracy of the second locking member 22 but also enhances the stability of its locking and unlocking operations with the first locking member 11. When unlocking is required, the second locking member 22 is pressed, causing it to slide along the slide groove 21c and disengage from the locked state with the first locking member 11; when locking is required, the second locking member 22 is released, and the elastic element pushes the second locking member 22 back to its original position along the slide groove 21c, re-locking it with the first locking member 11. In summary, this embodiment enhances the movement trajectory and stability of the second locking member 22 by providing a groove 21c on the inner wall of the first through hole 21a, thereby improving the accuracy and reliability of locking and unlocking operations.

[0048] Further, please refer to Figure 1 , Figure 7 and Figure 9 In one embodiment of the present invention, a first guide portion is provided in the first through hole 21a, and a second guide portion is provided on the first locking member 11. The first guide portion and the second guide portion are both arranged along the axial direction of the first through hole 21a, and the first guide portion and the second guide portion are slidably connected.

[0049] In this embodiment, by providing a first guide portion in the first through hole 21a and a second guide portion on the first locking member 11, the sliding connection relationship between the sliding block 21 and the first locking member 11 is further optimized, making the sliding of the sliding block 21 on the first locking member 11 more stable, smooth and precise.

[0050] Specifically, both the first guide portion and the second guide portion are arranged along the axial direction of the first through hole 21a, which is consistent with the extension direction of the headband 1. This effectively guides the sliding direction of the sliding block 21 on the headband 1, reducing wobbling and deviation during the sliding process. For example, the first guide portion can be an inner wall of the first through hole 21a, and the second guide portion can be an outer wall of the first locking member 11. The shapes of the first guide portion and the second guide portion are adapted to fit together and slide relative to each other. Alternatively, the first guide portion can be a guide groove 11a arranged along the inner wall of the first through hole 21a, and the second guide portion can be a guide protrusion matching the guide groove 11a. This protrusion can be elongated, cylindrical, or other shapes. When the sliding block 21 slides on the headband 1, the second guide portion slides along the first guide portion, ensuring that the movement trajectory of the sliding block 21 always remains in the predetermined direction, thereby improving the stability and reliability of the entire headband adjustment device 100.

[0051] Further, please refer to Figure 1 , Figure 7 and Figure 9 In one embodiment of the present invention, one of the first guide member and the second guide member is a guide groove 11a, and the other is a guide rail 211, which is slidably connected to the inner wall of the guide groove 11a.

[0052] In this embodiment, the guide rail 211 is disposed on the inner wall of the first through hole 21a and extends axially along the first through hole 21a. Its shape is an elongated protrusion, and its depth and width are adapted to the dimensions of the guide groove 11a to ensure a tight fit. The guide rail 211 is integrally formed with the first locking member 11 and can be made of high-strength plastic or aluminum alloy. During processing, the guide rail 211 can be formed on the outer surface of the first locking member 11 by injection molding or machining. The guide groove 11a is disposed on the first locking member 11 and extends axially along the first locking member 11. Its shape is an elongated groove, and its dimensions match the guide rail 211 to ensure a tight fit. The main function of the guide groove 11a and the guide rail 211 is to provide a clear sliding path for the sliding block 21, restrict the lateral movement of the sliding block 21 during the sliding process, and ensure that the sliding block 21 slides smoothly along a predetermined axial direction.

[0053] In summary, by designing the first guide member and the second guide member as a mating structure of guide groove 11a and guide rail 211, the sliding connection relationship between the sliding block 21 and the first locking member 11 is further optimized, improving the smoothness and accuracy of sliding, and enhancing the stability and reliability during sliding.

[0054] Further, please refer to Figure 1 and Figure 9 In one embodiment of the present invention, a stop member 111 is provided at each end of the second guide portion, and the sliding block 21 is limited to slide between the two stop members 111.

[0055] In this embodiment, by providing stop members 111 at both ends of the second guide portion, the sliding range and stability of the sliding block 21 are further limited, ensuring that the sliding block 21 will not slide out of the predetermined range during adjustment, thereby improving the safety and reliability of the entire headrest adjustment device 100. The stop members 111 are provided at both ends of the second guide portion, specifically at both ends of the first locking member 11. The stop members 111 can be protruding structures fixed at both ends of the guide rail 211, or they can be limiting blocks integrally formed with the guide rail 211. Preferably, in this embodiment, the stop members 111 are arranged in a ring and sleeved on the headband 1, which serves both to limit the sliding block 21 and to fix the first locking member 11 to the headband 1, thus achieving a dual-purpose effect, saving the material cost required for additional fixing structures and reducing the complexity of the structure.

[0056] In summary, by providing stop members 111 at both ends of the second guide portion, the head pad adjustment device 100 of this embodiment further optimizes the sliding range and stability of the sliding block 21, improves the safety and reliability of the entire device, and saves the material cost required for additional fixing structures and reduces the complexity of the structure.

[0057] Further, please refer to Figure 9 In one embodiment of the present invention, the first locking member 11 is provided with a plurality of first locking parts, which are arranged along the extension direction of the headband 1. The second locking member 22 is provided with a second locking part, which can be engaged with any of the first locking parts. Among the first locking parts and the second locking parts, one is a engaging protrusion 221 and the other is a engaging groove 11b.

[0058] In this embodiment, by providing a plurality of first locking parts on the first locking member 11 and providing a second locking part that cooperates with it on the second locking member 22, the locking mechanism of the head pad adjustment device 100 is further optimized, so that the position of the head pad 3 can be adjusted and fixed more precisely, thereby improving the flexibility and stability of the adjustment.

[0059] Specifically, the first locking part is disposed on the first locking member 11 and arranged along the extension direction of the headband 1. The spacing of the multiple first locking parts is designed according to the actual adjustment accuracy requirements, and this embodiment does not limit this. The first locking part can be a snap-fit ​​groove 11b, the shape and size of which are designed according to the snap-fit ​​protrusion 221 of the second locking part to ensure that the two can fit tightly. The main function of the first locking part is to cooperate with the second locking part to lock the sliding block 21 at different positions, thereby fixing the position of the head pad 3.

[0060] The second locking part is disposed on the second locking member 22, corresponding to the first locking part. The second locking part can be a snap-fit ​​protrusion 221, the shape and size of which match the snap-fit ​​groove 11b of the first locking part. The main function of the second locking part is to cooperate with the first locking part to lock and unlock the sliding block 21 at different positions. By pressing the second locking member 22, the second locking part can disengage from the first locking part, thereby unlocking the sliding block 21; when the second locking member 22 is released, the second locking part re-engages with the first locking part, locking the sliding block 21. By setting multiple first locking parts, users can choose the appropriate locking position according to their head size, so that the headrest 3 can more accurately adapt to the head size of different users.

[0061] The first locking part can be formed on the first locking member 11 by injection molding or machining, creating multiple engaging grooves 11b. The shape and size of the grooves are designed according to the engaging protrusions 221 of the second locking part, ensuring a tight fit between the two. The second locking part can be formed on the second locking member 22 by injection molding or machining, creating engaging protrusions 221. The shape and size of the engaging protrusions 221 match the grooves of the first locking part, ensuring a tight fit between the two.

[0062] Further, please refer to Figure 1 and Figure 13 In one embodiment of the present invention, an mounting post 212 is formed on the outer wall of the sliding block 21. A buckle 213 is provided at the end of the mounting post 212 away from the sliding block 21. The buckle 213 is detachably connected to the mounting post 212. The mounting post 212 passes through the head pad 3 and the head pad 3 is limited to the buckle 213 and the sliding block 21.

[0063] In this embodiment, to facilitate the replacement of the head pad 3, a mounting post 212 is formed on the outer wall of the sliding block 21. A cap 213 is provided at the end of the mounting post 212 away from the sliding block 21. The shape of the mounting post 212 can be set as cylindrical, and its height and diameter are designed according to the thickness of the head pad 3 and the size of the cap 213. The cap 213 is located at the end of the mounting post 212, and its size is larger than the outer diameter of the mounting post 212. The cap 213 and the mounting post 212 can be connected by fasteners such as screws. Alternatively, matching internal and external threads can be provided on the cap 213 and the mounting post 212 respectively, so that the mounting post 212 and the cap 213 are screwed together. Alternatively, mutually cooperating snaps can be provided on the mounting post 212 and the cap 213 respectively, so that the mounting post 212 and the cap 213 are snapped together. The main function of the buckle cap 213 is to fix the head pad 3 onto the sliding block 21. Through its cooperation with the mounting post 212, the head pad 3 is limited between the buckle cap 213 and the sliding block 21, preventing the head pad 3 from loosening or falling off during use. Since the buckle cap 213 and the mounting post 212 are detachably connected, users can easily remove the head pad 3 for cleaning or replacement, improving the product's ease of use.

[0064] This utility model also proposes a headset; please refer to [link / reference]. Figure 13 (Only a portion of the headband 1 and headrest 3 is shown). The headset includes a headrest adjustment device 100 as described in any of the above embodiments. Since this headset adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0065] The headset includes two earphone bodies 200, each containing a speaker and circuit board for sound generation. The two earphone bodies 200 are connected to both ends of the headband 1. Under the elasticity of the headband 1, the two earphone bodies 200 can be stably held in place on the wearer's head. By pressing the unlocking mechanism 2 and the first locking member 11, the space between the headrest 3 and the two earphone bodies 200 can be adjusted to accommodate different head sizes. This design avoids the structural fragility and easy wear of traditional headband 1 telescopic adjustment mechanisms, improves the convenience of headrest 3 adjustment, and ensures both a secure fit and comfort of the headset.

[0066] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A headrest adjustment device, characterized in that, The headrest adjustment device includes: The headband is equipped with a first locking element. A press-to-unlock mechanism, comprising a sliding block and a second locking member, wherein the second locking member is movably disposed on the sliding block, the sliding block is slidably connected to the first locking member, and the second locking member is configured to move toward or away from the first locking member to lock or disengage from the first locking member; and Head pad; the head pad is fixedly connected to the sliding block.

2. The headrest adjustment device as described in claim 1, characterized in that, The sliding block is provided with a first through hole, and the side wall of the first through hole is provided with a sliding hole, which connects the first through hole with the external space; The second locking member is slidably inserted through the sliding hole, a portion of the second locking member is located in the first through hole and forms a second through hole, the first through hole and the second through hole are in communication; The first locking member is sequentially inserted into the first through hole and the second through hole.

3. The headrest adjustment device as described in claim 2, characterized in that, The press-to-unlock mechanism further includes an elastic element, which connects an inner wall of the first through hole facing the sliding hole to the second locking element, and the elastic element is in a compressed state.

4. The headrest adjustment device as described in claim 2, characterized in that, The inner wall of the first through hole is also provided with a sliding groove, which extends along the axial direction of the sliding hole and communicates with the sliding hole. The second locking member is slidably connected to the inner wall of the sliding groove.

5. The headrest adjustment device as described in claim 2, characterized in that, The first through hole is provided with a first guide portion, and the first locking member is provided with a second guide portion. The first guide portion and the second guide portion are both arranged along the axial direction of the first through hole, and the first guide portion and the second guide portion are slidably connected.

6. The headrest adjustment device as described in claim 5, characterized in that, Of the first guide member and the second guide member, one is a guide groove and the other is a guide rail, and the guide rail is slidably connected to the inner wall of the guide groove.

7. The headrest adjustment device as described in claim 5, characterized in that, The second guide portion has a stop at each end, and the sliding block is limited to slide between the two stops.

8. The headrest adjustment device as described in any one of claims 1 to 7, characterized in that, The first locking member is provided with a plurality of first locking parts, and the plurality of first locking parts are arranged along the extension direction of the headband; The second locking member has a second locking part, which can engage with any of the first locking parts; Of the first locking part and the second locking part, one is a snap-fit ​​protrusion and the other is a snap-fit ​​groove.

9. The headrest adjustment device as described in any one of claims 1 to 7, characterized in that, A mounting post is formed on the outer wall of the sliding block, and a buckle is provided at the end of the mounting post away from the sliding block. The buckle is detachably connected to the mounting post. The mounting post passes through the head pad, and the head pad is limited to the space between the buckle and the sliding block.

10. A type of over-ear headphone, characterized in that, The headphones include the headrest adjustment device as described in any one of claims 1 to 9.

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