Sound insulation sponge installation device of headphone

Abstract

The invention relates to the technical field of headphone production, in particular to a headphone sound insulation sponge installation device which comprises a machine shell, a driving air cylinder, a positioning assembly, a calibration assembly and an overturning assembly, the machine shell is divided into an upper shell body and a lower shell body, and the upper end face of the lower shell body is provided with a containing groove used for containing a headphone body. A mounting groove is formed in the front end face of the upper shell, the driving air cylinder is located in an inner cavity of the upper end of the upper shell, the positioning assembly comprises a sliding mounting block, a containing rod, a positioning barrel and a negative pressure assembly, the sliding mounting block is located at the upper end of an inner cavity of the mounting groove, the driving air cylinder is connected with the sliding mounting block, and the containing rod penetrates through the two sides of the sliding mounting block. The positioning cylinder is connected with the front end of the placing rod, the negative pressure assembly is used for adsorbing the sound insulation sponge, the overturning assembly is used for controlling the placing rod to rotate by 180 degrees when the sliding installation block moves downwards, and the calibration assembly is used for driving the sound insulation sponge to rotate so that the buckles can vertically correspond to the clamping grooves. The sound insulation sponge mounting precision is high, and the overall automation degree is high.

Description

Technical Field

[0001] The present invention relates to the technical field of headphone production, and in particular to a sound insulation sponge mounting device for a headphone. Background Art

[0002] In the manufacturing of headphones, sound insulation foam (also known as ear pads or earmuff foam) serves as a core acoustic component and a key element in ensuring wearer comfort. The quality and efficiency of its installation crucially impact the product's performance and user experience. Currently, the installation of this insulation foam relies heavily on manual labor, which is plagued by significant drawbacks such as low efficiency, poor consistency, and potential occupational health risks.

[0003] The inherent characteristics of manual operation inevitably introduce the risk of quality fluctuations. Individual differences among operators (such as experience, fatigue, and fluctuations in concentration), visual alignment errors, and uneven force application can easily lead to problems such as offset installation position, tilted angles, partial adhesion, or inadequate snapping of the sound insulation cotton. Such defects can affect the uniformity of product appearance at the very least, and at worst lead to acoustic seal failure (causing sound leakage and low-frequency attenuation), uneven pressure distribution (reduced wearing comfort), and even functional defects (such as compression of internal components), significantly increasing product return rates and quality costs. Installation actions that require high repeatability and high precision (especially fine alignment and continuous pressure) can easily cause accumulated fatigue in the operator's hands, wrists, shoulders, and neck. Long-term operation can induce musculoskeletal strain (such as carpal tunnel syndrome and tenosynovitis), threatening employee health, increasing the management burden of the enterprise, and indirectly affecting operational stability and yield rate.

[0004] Therefore, the industry urgently needs to develop a special automatic or semi-automatic installation device for headphone sound insulation cotton. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a sound insulation sponge installation device for headphones.

[0006] The present invention adopts the following technical solution: A sound insulation sponge installation device for headphones, including a casing, a driving cylinder, a positioning assembly, a calibration assembly and a flip assembly, the casing is divided into an upper shell and a lower shell, the upper end surface of the lower shell is provided with a receiving groove for accommodating a headphone body, the front end surface of the upper shell is provided with a mounting groove, the driving cylinder is located in the upper end inner cavity of the upper shell, the positioning assembly includes a sliding mounting block, a placement rod, a positioning cylinder and a negative pressure assembly, the sliding mounting block is located at the upper end of the inner cavity of the mounting groove, the driving cylinder is connected to the sliding mounting block, the placement rod passes through both sides of the sliding mounting block, the positioning cylinder is connected to the front end of the placement rod, the negative pressure assembly is used to adsorb the sound insulation sponge, the flip assembly is used to control the placement rod to rotate 180° when the sliding mounting block moves downward, the calibration assembly is provided on the positioning assembly, the sound insulation sponge is provided with a buckle, the earmuff of the headphone body is provided with a slot adapted to the buckle, and the calibration assembly is used to drive the sound insulation sponge to rotate so that the buckle and the slot correspond up and down.

[0007] The sound insulation sponge installation device for headphones according to an embodiment of the present invention can quickly and conveniently position the headphone body by providing a receiving groove, thereby facilitating the installation of the sound insulation sponge. The design of the installation groove facilitates the up and down movement of the sliding installation block. The negative pressure component can absorb the sound insulation sponge and preliminarily position it. The two placement rods correspond to the two sound insulation sponges, so that two sound insulation sponges can be installed on a headphone body at a time, thereby improving the installation efficiency. In addition, by providing a calibration component, the position of the sound insulation sponge can be adjusted, so that no matter how the sound insulation sponge is placed on the negative pressure component, before installation, the buckle of the sound insulation sponge can be aligned with the slot of the headphone body up and down to ensure installation accuracy. After the position of the sound insulation sponge is adjusted, the flip component can control the placement rod to rotate 180° by moving the sliding installation block downward, so that the sound insulation sponge is upside down on the top of the headphone body. Finally, the installation of the sound insulation sponge is completed by driving the cylinder downward. The overall degree of automation is high, which effectively reduces manpower, avoids quality risks caused by manual operation, and improves production efficiency.

[0008] Furthermore, the negative pressure assembly includes an air pump, a connecting hose, a connecting seat, a negative pressure ring and multiple suction cups. The front end of the sliding mounting block is provided with a mounting bracket, and the air pump is arranged at the lower end of the mounting bracket. One end of the connecting hose is connected to the air pump, and the other end passes through the positioning cylinder and the connecting seat in sequence, and is connected to the hollow negative pressure ring. The lower end of the connecting seat is embedded in the positioning cylinder, and the suction cups are evenly distributed on the upper end of the negative pressure ring and are connected to the negative pressure ring. The lower end of the sound insulation sponge abuts against the suction cups.

[0009] Furthermore, the positioning assembly also includes a positioning column, the lower end of which passes through the negative pressure ring and is connected to the connecting seat, and the upper end of which is embedded in the inner ring of the sound insulation sponge and adapted to the inner ring of the sound insulation sponge.

[0010] Furthermore, a guide plate is provided on the inner top wall of the mounting groove, the front end surface of the guide plate is slidably connected to the rear end surface of the sliding mounting block, and both sides of the guide plate are slidably connected to the placement rod.

[0011] Furthermore, the calibration assembly includes a rotating assembly and a guide assembly, the rotating assembly includes a driving motor, a rotating column, a first column gear and a gear ring, the driving motor is fixedly connected to the inner wall of the positioning cylinder, the rotating column is arranged in the middle of the inner cavity of the positioning cylinder, and is rotatably connected to the positioning cylinder, the output end of the driving motor is connected to the first column gear, the gear ring is sleeved on the rotating column and meshes with the first column gear, the upper end of the rotating column is connected to the connecting seat, the guide assembly is arranged on the mounting bracket, and the guide assembly is used to limit the self-rotation of the sound insulation sponge when the driving motor drives the sound insulation sponge to rotate until the buckle and the slot correspond to each other up and down.

[0012] Furthermore, the guide assembly includes a guide frame, a first gear rod, a second column gear, a rotating rod and a roller column, the second column gear is provided with two, the second column gear is arranged in the upper end of the mounting frame, the second column gear is rotatably connected to the mounting frame, one end of the first gear rod is embedded between the two second column gears and meshes with the two second column gears, the other end of the first gear rod extends backward from the mounting frame and is connected to the guide frame, the rotating rod is in the shape of a "7", the rotating rod is arranged at the upper end of the mounting frame, the vertical section of the rotating rod is embedded in the mounting frame and is fixedly connected to the second column gear, the horizontal section of the rotating rod is away from the vertical section and a roller is provided at one end. The guide frame is in the shape of a horizontal " The guide frame is U-shaped, and the open end of the guide frame faces backward. The two side frames of the guide frame are fixedly connected to the front end surface of the casing. A guide groove is provided on the bottom frame of the guide frame. The left and right, front and back, and lower ends of the guide groove are all open structures. A sliding rod is provided at the end of the first gear rod away from the second column gear. The first gear rod is embedded in the guide groove from the middle, and the sliding rod passes through the guide groove from the left and right directions. The guide groove is used to drive the first gear rod to move back and forth through the sliding rod when the first gear rod moves up and down with the mounting frame, thereby driving the rotating rod to rotate 90° or reset horizontally through the second column gear. The rotating rod is used to abut against the buckle when it rotates to the upper end of the sound insulation sponge.

[0013] The locking plate is located in the locking cam portion of the locking cam portion and is secured to the locking cam portion by a spring which is secured to the locking cam portion when the locking cam portion is engaged with the lower end of the locking cam portion.

[0014] Furthermore, the flip assembly is composed of a first guide rod, a guide block, a third column gear, a second gear rod and a second guide rod, the first guide rods are provided with four and are all distributed vertically, every two of the first guide rods form a group, the upper end of the first guide rod is connected to the upper end inner wall of the rear side of the mounting groove, the guide block is provided at the end of the placement rod away from the positioning cylinder, the guide block is clamped by the group of first guide rods, the guide block is slidably connected to the first guide rod up and down, the third column gear is sleeved on the end of the placement rod away from the positioning cylinder, and the third column gear is located at the front side of the guide block, the second gear rods are vertically provided with two and are both connected to the rear end surface of the guide plate, the second gear rod is used to mesh with the third column gear when the sliding mounting block moves downward, the second guide rods are vertically provided with four and are all connected to the lower end inner wall of the rear side of the mounting groove, every two of the second guide rods form a group, the group of second guide rods corresponds to the group of first guide rods up and down, and the gap between the group of second guide rods is the same as the gap between the group of first guide rods.

[0015] Furthermore, pressure rods are provided on both sides of the sliding mounting block, and clamping rods corresponding to the pressure rods are provided in the lower shell body. The clamping rods are located on both sides of the accommodating groove. The pressure rods are used to push the clamping rods toward the accommodating groove and embed into the accommodating groove as the sliding mounting block moves downward, thereby clamping the headset body.

[0016] Furthermore, a telescopic column is provided at the upper end of the positioning column, the lower end of the telescopic column is embedded in the positioning column and connected to the positioning column by setting a return spring, and a pressure ring is provided at the upper end of the telescopic column, which is used to abut against the raised part in the middle of the headset body when the placement rod is rotated 180° and moved downward. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 Schematic diagram of the structure of the sound insulation sponge mounting device for headphones of the present invention; Figure 2 Schematic diagram of the structure of the housing of the sound insulation sponge mounting device for headphones of the present invention; Figure 3 This is a schematic structural diagram of the sound insulation sponge mounting device for headphones of the present invention without the housing; Figure 4 Schematic diagram of the rear structure of the positioning assembly in the sound insulation sponge mounting device of the headphones of the present invention; Figure 5 Schematic diagram of the structure of the negative pressure component in the sound insulation sponge installation device of the headphone of the present invention; Figure 6 Schematic diagram of the structure of the telescopic column in the sound insulation sponge installation device of the headphone of the present invention; Figure 7 Schematic diagram of the structure of the rotating assembly in the sound insulation sponge mounting device of the headphone of the present invention; Figure 8 Schematic diagram of the structure of the guide assembly in the sound insulation sponge installation device of the headphone of the present invention; Figure 9 Schematic diagram of the structure of the push rod in the sound insulation sponge installation device of the headphone of the present invention; Figure 10 The figure is a schematic diagram of the rear structure of the flip assembly in the sound insulation sponge mounting device of the headphones of the present invention.

[0019] Description of reference numerals: 1. Casing; 2. Upper housing; 3. Lower housing; 4. Driving cylinder; 5. Receiving slot; 6. Mounting slot; 7. Guide plate; 8. Boss; 10. Positioning assembly; 11. Sliding mounting block; 111. Mounting frame; 112. Press rod; 113. Clamping rod; 12. Placement rod; 13. Positioning cylinder; 14. Negative pressure assembly; 141. Air pump; 142. Connecting hose; 143. Connecting seat; 144. Negative pressure ring; 145. Suction cup; 15. Positioning column; 151. Telescopic column; 152. Return spring; 153. Pressing ring; 20. Calibration assembly; 21. Rotating assembly; 211. Driving motor; 212. Rotating column ;213, first column gear; 214, gear ring; 22, guide assembly; 221, guide frame; 2211, guide groove; 222, first gear rod; 223, second column gear; 224, rotating rod; 225, roller; 226, slide rod; 23, limit assembly; 231, top plate; 232, top rod; 233, torsion spring; 234, retaining ring; 235, limit plate; 30, flip assembly; 31, first guide rod; 32, guide block; 33, third column gear; 34, second gear rod; 35, second guide rod; 40, sound insulation sponge; 41, buckle; 50, headphone body; 51, slot. DETAILED DESCRIPTION

[0020] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0021] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0023] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0024] Reference Figures 1 to 10 According to an embodiment of the present invention, a device for installing a sound insulation sponge 40 for headphones includes a housing 1, a driving cylinder 4, a positioning assembly 10, a calibration assembly 20 and a flip assembly 30. The side cross-section of the housing 1 is L-shaped, the vertical portion of the housing is the upper housing 2, and the horizontal portion is the lower housing 3. The upper end surface of the lower housing 3 is provided with a receiving groove 5 for accommodating a headphone main body 50. The front end surface of the upper housing 2 is provided with a mounting groove 6. The cross-section of the mounting groove 6 is convex. The mounting groove 6 and the receiving groove 5 are connected up and down. The driving cylinder 4 is located in the upper end inner cavity of the upper housing 2. The positioning assembly 10 includes a sliding mounting block 11, a placement rod 12, a positioning cylinder 13 and a negative pressure assembly 14. The sliding mounting block 11 is located at the upper end of the inner cavity of the mounting groove 6 and is slidably connected to the inner wall of the mounting groove 6. The output end of the driving cylinder 4 is connected to the upper end of the sliding mounting block 11 There are two placement rods 12, and the two placement rods 12 pass through both sides of the sliding mounting block 11 in the front and rear directions respectively. The placement rod 12 is rotatably connected to the sliding mounting block 11, and the positioning cylinder 13 is connected to the front end of the placement rod 12. The negative pressure component 14 is provided at the upper end of the positioning cylinder 13. The negative pressure component 14 is used to adsorb the sound insulation sponge 40. The flip component 30 is located on the rear end inner wall of the mounting groove 6. The rear end of the placement rod 12 is connected to the flip component 30. The flip component 30 is used to control the placement rod 12 to rotate 180° when the driving cylinder 4 drives the sliding mounting block 11 to move downward. The calibration component 20 is provided on the positioning component 10. The sound insulation sponge 40 is provided with a buckle 41. The earmuff of the headphone main body 50 is provided with a card slot 51 adapted to the buckle 41. The calibration component 20 is used to drive the sound insulation sponge 40 to rotate so that the buckle 41 corresponds to the card slot 51 up and down.

[0025] The sound insulation sponge 40 installation device of the headset of one embodiment of the present invention can quickly and conveniently position the headset body 50 by providing the receiving groove 5, and facilitate the installation of the sound insulation sponge 40. The design of the installation groove 6 facilitates the up and down movement of the sliding installation block 11. The negative pressure component 14 can absorb the sound insulation sponge 40 and preliminarily position it. The two placement rods 12 correspond to the two sound insulation sponges 40, so that the installation of two sound insulation sponges 40 on a headset body 50 can be achieved at a time, thereby improving the installation efficiency. In addition, by providing the calibration component 20, the position of the sound insulation sponge 40 can be adjusted so that the sound insulation sponge 40 is not lost. No matter how casually the sponge 40 is placed on the negative pressure component 14, before installation, the buckle 41 of the sound insulation sponge 40 can be aligned with the slot 51 of the headphone body 50 to ensure installation accuracy; after the position of the sound insulation sponge 40 is adjusted, the flip component 30 can control the placement rod 12 to rotate 180° by sliding the mounting block 11 downward, so that the sound insulation sponge 40 is upside down on top of the headphone body 50, and finally the installation of the sound insulation sponge 40 is completed by driving the cylinder 4 downward. The overall degree of automation is high, which effectively reduces manpower, avoids quality risks caused by manual operation, and improves production efficiency.

[0026] The negative pressure assembly 14 includes an air pump 141, a connecting hose 142, a connecting seat 143, a negative pressure ring 144 and a plurality of suction cups 145. The front end of the sliding mounting block 11 is provided with a mounting frame 111. The air pump 141 is arranged at the lower end of the mounting frame 111. One end of the connecting hose 142 is connected to the air pump 141, and the other end passes through the positioning cylinder 13 and the connecting seat 143 in sequence, and is connected to the hollow negative pressure ring 144. The lower end of the connecting seat 143 is embedded in the positioning cylinder 13. The suction cups 145 are evenly distributed on the upper end of the negative pressure ring 144 and are connected to the negative pressure ring 144. The lower end of the sound insulation sponge 40 abuts against the suction cups 145; the air pump 141 generates negative pressure, which is transmitted to the negative pressure ring 144 through the connecting hose 142 and finally reaches the suction cups 145, so that the suction cups 145 can adsorb the sound insulation sponge 40, and multiple suction cups 145 are distributed on the negative pressure ring 144, which can ensure the negative pressure assembly 14 has an adsorption force on the sound insulation sponge 40; in this embodiment, the connecting seat 143 is arranged in the middle of the front end surface of the sliding mounting block 11, and the connecting seat 143 is "L"-shaped as a whole, and its transverse section is connected to the sliding mounting block 11. The middle part of the connecting seat 143 is a hollow structure in the left and right directions, and the air pump 141 is installed in the hollow groove of the transverse section of the connecting seat 143. There are two connecting hoses 142. Similarly, there are two positioning cylinders 13, connecting seats 143, and negative pressure rings 144. The connecting hoses 142 start from the air pump 141 and disperse from both sides, and are respectively connected to the corresponding negative pressure rings 144. The air pump 141 is located between the two sound insulation sponges 40 to ensure that the negative pressures of the two negative pressure rings 144 are basically the same; the lower end surface of the connecting seat 143 is provided with a groove for the positioning cylinder 13 to be embedded, and the inner wall of the top surface of the groove is provided with a cylindrical structure for connecting to the rotating column 212.

[0027] The positioning assembly 10 also includes a positioning column 15, the lower end of the positioning column 15 passes through the negative pressure ring 144 and is connected to the connecting seat 143, and the upper end of the positioning column 15 is embedded in the inner ring of the sound insulation sponge 40 and is adapted to the inner ring of the sound insulation sponge 40; the positioning column 15 can position the sound insulation sponge 40 so that it is accurately placed on the suction cup 145, and ensure that each suction cup 145 can stably absorb the sound insulation sponge 40; in this embodiment, the sound insulation sponge 40 can be abutted against the suction cup 145 after being put on the positioning column 15, and the structure of the positioning column 15 does not affect the connection between the connecting hose 142 and the negative pressure ring 144.

[0028] A guide plate 7 is provided on the inner top wall of the mounting groove 6, the front end surface of the guide plate 7 is slidably connected to the rear end surface of the sliding mounting block 11, and the two sides of the guide plate 7 are slidably connected to the placement rod 12; through the guide plate 7, it can be ensured that the sliding mounting block 11 can move up and down smoothly.

[0029] The calibration assembly 20 includes a rotating assembly 21 and a guide assembly 22. The rotating assembly 21 includes a driving motor 211, a rotating column 212, a first column gear 213 and a gear ring 214. The driving motor 211 is fixedly connected to the inner wall of the positioning cylinder 13. The rotating column 212 is arranged in the middle of the inner cavity of the positioning cylinder 13 and is rotatably connected to the positioning cylinder 13. The output end of the driving motor 211 is connected to the first column gear 213. The gear ring 214 is sleeved on the rotating column 212 and meshes with the first column gear 213. The upper end of the rotating column 212 is connected to the connecting seat 143. The guide assembly 22 is arranged on the mounting frame 111. The guide assembly 22 is used to limit the self-rotation of the sound insulation sponge 40 when the driving motor 211 rotates with the sound insulation sponge 40 until the buckle 41 and the card slot 51 correspond up and down; start the driving motor 211, the first column gear 213 rotates with the gear ring 214, and the gear ring 214 rotates with the rotating column 212 and the connecting seat 143, thereby realizing The rotation of the sound insulation sponge 40 facilitates the adjustment of the position of the buckle 41 by the sound insulation sponge 40 under the action of the guide assembly 22; in this embodiment, the inner wall of the positioning cylinder 13 has a structure adapted to the side wall of the driving motor 211, so that the driving motor 211 can be stably fixedly connected to the inner wall of the positioning cylinder 13, and the upper end of the rotating column 212 is a wedge-shaped structure. The upper end of the rotating column 212 is embedded in the lower end of the connecting seat 143. The friction force can drive the connecting seat 143 to rotate when the rotating column 212 rotates, that is, the rotating column 212 and the connecting seat 143 are not fixedly connected. The blocking force of the guide assembly 22 on the buckle 41 needs to be greater than the friction force between the rotating column 212 and the connecting seat 143, thereby ensuring that the sound insulation sponge 40 can no longer rotate when its buckle 41 corresponds to the slot 51 up and down under the action of the guide assembly 22, thereby achieving the fixation of the position of the sound insulation sponge 40 and preventing the continuous rotation of the sound insulation sponge 40 from causing the position of the buckle 41 and the slot 51 to deviate.

[0030] The guide assembly 22 includes a guide frame 221, a first gear rod 222, a second column gear 223, a rotating rod 224 and a roller 225. The second column gear 223 is provided with two, and the second column gear 223 is internally arranged at the upper end of the mounting frame 111. The second column gear 223 is rotatably connected to the mounting frame 111. One end of the first gear rod 222 is embedded between the two second column gears 223 and meshes with the two second column gears 223. The other end of the first gear rod 222 extends backward from the mounting frame 111 and is connected to the guide frame 221. The rotating rod 224 is in the shape of "7", the rotating rod 224 is arranged at the upper end of the mounting frame 111, the vertical section of the rotating rod 224 is embedded in the mounting frame 111 and is fixedly connected to the second column gear 223, the horizontal section of the rotating rod 224 is away from the vertical section. The end of the roller column 225 is provided, and the guide frame 221 is in the shape of a horizontal "U", and the open end of the guide frame 221 is facing backward. The two side frames of the guide frame 221 are fixedly connected to the front end surface of the housing 1, and the bottom frame of the guide frame 221 is provided with a guide groove 2211. The left and right sides of the guide groove 2211 are fixedly connected. The front and rear ends and the lower end are all open structures. A sliding rod 226 is provided at one end of the first gear rod 222 away from the second column gear 223. The first gear rod 222 is embedded in the guide groove 2211 from the middle, and the sliding rod 226 passes through the guide groove 2211 from the left and right directions. The guide groove 2211 is used to drive the first gear rod 222 to move forward and backward through the sliding rod 226 when the first gear rod 222 moves up and down with the mounting bracket 111, thereby driving the rotating rod 224 to rotate 90 degrees horizontally or reset through the second column gear 223. The rotating rod 224 is used when it When it rotates to the upper end of the sound insulation sponge 40, it abuts against the buckle 41; the guide frame 221 is fixedly connected to the casing 1, that is, the guide frame 221 will not move, and the first gear rod 222 will move as the sliding mounting block 11 moves up and down, and the slide rod 226 slides along the guide groove 2211. Under the curved groove line of the guide groove 2211, the first gear rod 222 will move back and forth relative to the mounting frame 111, thereby driving the two second column gears 223 to rotate, and finally driving the rotating rod 224 to rotate to the top of the sound insulation sponge 40 to block the buckle 41.

[0031] In this embodiment, the two second column gears 223 are arranged side by side, and saw teeth are provided on both sides of one end of the first gear rod 222, so that the first gear rod 222 can mesh with the two second column gears 223 at the same time. In the initial state, the transverse sections of the two rotating rods 224 are parallel to each other and stepped in the front-to-back direction. When the first gear rod 222 moves forward under the action of the guide groove 2211, the transverse sections of the two rotating rods 224 rotate toward the sound insulation sponge 40 they are close to, and the length of the saw teeth of the first gear rod 222 makes the transverse sections of the two rotating rods 224 rotate exactly 90 degrees. At this time, the roller 225 is located directly above the sound insulation sponge 40, and the roller 225 It is located on the running route of the buckle 41 when the sound insulation sponge 40 rotates, so that the roller 225 can block the buckle 41; in specific implementation, the sound insulation sponge 40 on the left rotates clockwise under the action of the driving motor 211, and the rotating rod 224 on the left rotates 90° clockwise, and the sound insulation sponge 40 on the right rotates counterclockwise under the action of the driving motor 211, and the rotating rod 224 on the right rotates 90° counterclockwise, so that even if the rotating rod 224 abuts against the buckle 41 on the way to the top of the sound insulation sponge 40, it will rotate smoothly due to the action of the roller 225 until it rotates 90° to block the buckle 41.

[0032] The upper part of the guide groove 2211 is inclined toward the front and lower direction, the middle part is vertically downward, and the lower part is inclined toward the rear and lower direction and then vertically downward. The sliding rod 226 is initially located at the upper end of the guide groove 2211. As the first gear rod 222 moves downward, the sliding rod 226 slides from the upper part of the guide groove 2211 to the middle part. During this process, the first gear rod 222 is pushed forward by the guide groove 2211, thereby driving the rotating rod 224 to rotate. When the sliding rod 226 enters the middle part of the guide groove 2211, the first gear rod 222 stops moving forward, and the rotating rod 224 also rotates 90 degrees. When the sliding rod 226 continues to move downward and enters the lower part of the guide groove 2211, the first gear rod 222 is guided The groove 2211 is pushed back to reset backward, and the rotating rod 224 is also driven to reset and maintain the state when the sliding rod 226 enters the vertical part at the bottom of the guide groove 2211; in this embodiment, by controlling the rotation speed of the sound insulation sponge 40, the time during which the sliding rod 226 slides in the middle of the guide groove 2211 is sufficient for the buckle 41 to be adjusted to be aligned with the slot 51. When the sliding rod 226 enters the vertical section at the bottom of the guide groove 2211, the rotating rod 224 is completely reset. At this time, the flipping assembly 30 can start to drive the sound insulation sponge 40 to flip. In specific implementation, the timing for the flipping assembly 30 to drive the sound insulation sponge 40 to flip can be achieved by controlling the height of the second gear rod 34.

[0033] The calibration component 20 also includes a limit assembly 23, which consists of a top plate 231, a top rod 232, a torsion spring 233, a retaining ring 234 and a limit plate 235. The top plate 231 is connected to the rear end inner wall of the mounting groove 6, the top rod 232 passes through the placement rod 12 and is embedded in the positioning cylinder 13, and a limit plate 235 is provided at one end of the top rod 232 located in the positioning cylinder 13, the retaining ring 234 is sleeved on the placement rod 12, the retaining ring 234 is located between the sliding mounting block 11 and the positioning cylinder 13, the torsion spring 233 is sleeved on the placement rod 12, and the torsion spring One end of the spring 233 is connected to the front end surface of the sliding mounting block 11, and the other end is connected to the retaining ring 234. The limiting plate 235 is an arc-shaped structure adapted to the side wall of the connecting seat 143. The upper end of the top plate 231 is thin, and the lower end is thick, and the intersection of the thin and thick parts is connected by an inclined surface. The end of the top rod 232 away from the positioning cylinder 13 abuts against the upper end of the top plate 231. When the top rod 232 moves down to abut against the lower end of the top plate 231, the limiting plate 235 abuts tightly against the side wall of the connecting seat 143; when the sliding mounting block 11 moves down, the top rod 232 moves along with the placement rod 1 2 moves downward, and one end of the push rod 232 slides along the front side wall of the top plate 231 until the push rod 232 abuts the inclined surface where the thickness of the push rod 232 and the top plate 231 meet. The push rod 232 is pushed forward, the torsion spring 233 is compressed, and the limit plate 235 moves toward the lower end side wall of the connecting seat 143 until it abuts against it. When the push rod 232 slides to the thicker part of the top plate 231, the limit plate 235 has already abutted tightly against the connecting seat 143. At this time, the connecting seat 143 can no longer be driven to rotate by the rotating column 212 because the limit plate 235 and the connecting seat 1 The abutment force of 43 is greater than the friction force between the rotating column 212 and the connecting seat 143. The limit plate 235 and the rotating rod 224 work together to effectively prevent the buckle 41 of the sound insulation sponge 40 from shifting again after being aligned with the slot 51; in this embodiment, the buckle 41 of the sound insulation sponge 40 has completed position calibration when the limit plate 235 abuts against the connecting seat 143; when the push rod 232 moves up with the placement rod 12 to disengage from the abutment with the thicker section of the top plate 231, under the action of the torsion spring 233, the push rod 232 resets backward and finally slides into abutment with the thinner section of the top plate 231.

[0034] The flip assembly 30 is composed of a first guide rod 31, a guide block 32, a third column gear 33, a second gear rod 34 and a second guide rod 35. The first guide rods 31 are provided with four and are all distributed vertically. Every two first guide rods 31 form a group. The upper ends of the first guide rods 31 are connected to the upper end inner wall of the rear side of the mounting groove 6. The guide block 32 is provided at the end of the placement rod 12 away from the positioning cylinder 13. The guide block 32 is clamped by the group of first guide rods 31. The guide block 32 is connected to the first guide rod 31 for sliding up and down. The third column gear 33 is sleeved on The rod 12 is placed at one end away from the positioning cylinder 13, and the third column gear 33 is located on the front side of the guide block 32. Two second gear rods 34 are vertically provided and are both connected to the rear end surface of the guide plate 7. The second gear rod 34 is used to engage with the third column gear 33 when the sliding mounting block 11 moves downward. Four second guide rods 35 are vertically provided and are all connected to the lower end inner wall of the rear side of the mounting groove 6. Every two second guide rods 35 form a group. The group of second guide rods 35 corresponds to the group of first guide rods 31 up and down, and the distance between the group of second guide rods 35 is 1 / 4 of the distance between the second guide rods 35. The gap is the same as the gap between the first guide rods 31 in the group; the two first guide rods 31 in the group clamp the guide block 32 to prevent the placement rod 12 from rotating. When the placement rod 12 moves downward until the third column gear 33 is engaged with the second gear rod 34, the placement rod 12 begins to be driven by the third column gear 33 to rotate until the third column gear 33 is disengaged from the second gear rod 34, and the placement rod 12 completes a 180° rotation. At this time, the sound insulation sponge 40 is facing downward to correspond to the headphone body 50, and the placement rod 12 continues to move downward until the guide block 32 is embedded in the group of second guide rods 35, and the group of second guide rods 35 limits the guide block 32 to prevent the placement rod 12 from rotating, thereby ensuring that the sound insulation sponge 40 is smoothly installed on the headphone body 50, and the installation accuracy is guaranteed; in this embodiment, when the third column gear 33 and the second gear rod 34 begin to engage, the limit plate 235 is already tightly abutted against the connecting seat 143, which can be achieved by adjusting the height of the second gear rod 34; each group of first guide rods 31 and each group of second guide rods 35 corresponds to a placement rod 12.

[0035] The pressing rods 112 are provided on both sides of the sliding mounting block 11, and the lower shell 3 is provided with clamping rods 113 corresponding to the pressing rods 112. The clamping rods 113 are located on both sides of the accommodating groove 5. The pressing rods 112 are used to push the clamping rods 113 toward the accommodating groove 5 as the sliding mounting block 11 moves downward and embed into the accommodating groove 5 to clamp the headphone body 50; the pressing rods 112 can push the clamping rods 113 toward the headphone body 50 when the sliding mounting block 11 moves downward, thereby completing further positioning of the headphone body, avoiding the headphone body 50 from being offset during the installation of the sound insulation sponge 40, and effectively ensuring the installation accuracy; in this embodiment, the end of the clamping rod 113 close to the headphone body 50 is adapted to the side wall of the headphone body 50 to ensure that the headphone body 50 is clamped; When the pressure rod 112 is reset and moves upward, the clamping rod 113 is reset under the action of the spring; specifically, a boss 8 is provided in the accommodating groove 5, and the boss 8 is adapted to the inner ring structure of the headphone main body 50, that is, the headphone main body 50 is just covered on the boss 8, and the design of the boss 8 can further position the headphone main body 50.

[0036] A telescopic column 151 is provided at the upper end of the positioning column 15, and the lower end of the telescopic column 151 is embedded in the positioning column 15 and connected to the positioning column 15 by setting a return spring 152. A pressure ring 153 is provided at the upper end of the telescopic column 151. The pressure ring 153 is used to abut against the raised portion in the middle of the headphone body 50 when the placement rod 12 rotates 180 degrees and moves downward; since the middle of the headphone body 50 generally has a raised structure, the telescopic column 151 is provided so that before the sound insulation sponge 40 is about to contact the headphone body, the telescopic column 151 first abuts against the raised portion in the middle of the headphone body 50, and then Then, as the sliding mounting block 11 moves downward, it is pressed down, so that the buckle 41 on the sound insulation sponge 40 can be smoothly inserted into the slot 51 of the headphone main body 50, completing the installation of the sound insulation sponge 40; when the pressure ring 153 abuts against the middle protrusion of the headphone main body 50, the telescopic column 151 moves toward the positioning column 15, and the return spring 152 is compressed. The return spring 152 can play a buffering role to prevent the pressure ring 153 from crushing the headphone main body 50 and affecting the quality of the headphone; in this embodiment, the pressure ring 153 is adapted to the middle protrusion of the headphone main body 50, and it can be made of rubber.

[0037] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0038] Under the premise that no conflict occurs, those skilled in the art may freely combine and superimpose the above-mentioned additional technical features.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sound insulation sponge mounting device for headphones, characterized in that: The headset is provided with a mounting groove adapted for accommodating the headset body, and the earmuff of the headset body is provided with a slot adapted for accommodating the headset body. The calibration assembly is used to drive the sound insulation sponge to rotate so that the clip and the slot correspond up and down.

2. The sound insulation sponge mounting device for headphones according to claim 1, characterized in that: The negative pressure assembly includes an air pump, a connecting hose, a connecting seat, a negative pressure ring and multiple suction cups. A mounting bracket is provided at the front end of the sliding mounting block. The air pump is arranged at the lower end of the mounting bracket. One end of the connecting hose is connected to the air pump, and the other end passes through the positioning cylinder and the connecting seat in sequence, and is connected to the hollow negative pressure ring. The lower end of the connecting seat is embedded in the positioning cylinder. The suction cups are evenly distributed on the upper end of the negative pressure ring and are connected to the negative pressure ring. The lower end of the sound insulation sponge abuts against the suction cup.

3. The sound insulation sponge mounting device for headphones according to claim 2, characterized in that: The positioning assembly also includes a positioning column, the lower end of which passes through the negative pressure ring and is connected to the connecting seat, and the upper end of which is embedded in the inner ring of the sound insulation sponge and adapted to the inner ring of the sound insulation sponge.

4. The sound insulation sponge mounting device for headphones according to claim 1, characterized in that: A guide plate is provided on the inner top wall of the mounting groove, the front end surface of the guide plate is slidably connected to the rear end surface of the sliding mounting block, and both sides of the guide plate are slidably connected to the placement rod.

5. The sound insulation sponge mounting device for headphones according to claim 2, characterized in that: The calibration assembly includes a rotating assembly and a guide assembly. The rotating assembly includes a driving motor, a rotating column, a first column gear and a gear ring. The driving motor is fixedly connected to the inner wall of the positioning cylinder. The rotating column is arranged in the middle of the inner cavity of the positioning cylinder and is rotatably connected to the positioning cylinder. The output end of the driving motor is connected to the first column gear. The gear ring is sleeved on the rotating column and meshes with the first column gear. The upper end of the rotating column is connected to the connecting seat. The guide assembly is arranged on the mounting bracket. The guide assembly is used to limit the self-rotation of the sound insulation sponge when the driving motor rotates with the sound insulation sponge until the buckle and the slot correspond to each other up and down.

6. The sound insulation sponge mounting device for headphones according to claim 5, characterized in that: The guide assembly includes a guide frame, a first gear rod, a second column gear, a rotating rod and a roller column, the second column gear is provided with two, the second column gear is arranged in the upper end of the mounting frame, the second column gear is rotatably connected to the mounting frame, one end of the first gear rod is embedded between the two second column gears and meshes with the two second column gears, the other end of the first gear rod extends backward from the mounting frame and is connected to the guide frame, the rotating rod is in the shape of a "7", the rotating rod is arranged at the upper end of the mounting frame, the vertical section of the rotating rod is embedded in the mounting frame and is fixedly connected to the second column gear, the horizontal section of the rotating rod is away from the vertical section and a roller is provided at one end thereof, and the guide frame is in the shape of a horizontal "U". shape, and the open end of the guide frame faces backward, the two side frames of the guide frame are fixedly connected to the front end surface of the casing, and a guide groove is provided on the bottom frame of the guide frame, and the left and right, front and back and lower ends of the guide groove are all open structures. A sliding rod is provided at the end of the first gear rod away from the second column gear, and the first gear rod is embedded in the guide groove from the middle, and the sliding rod passes through the guide groove from the left and right directions. The guide groove is used to drive the first gear rod to move back and forth through the sliding rod when the first gear rod moves up and down with the mounting frame, thereby driving the rotating rod to rotate 90° or reset horizontally through the second column gear, and the rotating rod is used to abut against the buckle when it rotates to the upper end of the sound insulation sponge.

7. The sound insulation sponge mounting device for headphones according to claim 2, characterized in that: The locking plate is located in the locking cam portion of the locking cam portion and is secured to the locking cam portion by a spring which is secured to the locking cam portion when the locking cam portion is engaged.

8. The sound insulation sponge mounting device for headphones according to claim 4, characterized in that: The turning assembly consists of a first guide rod, a guide block, a third column gear, a second gear rod and a second guide rod, the first guide rods being provided with four and all distributed vertically, two of the first guide rods forming a group, the upper end of the first guide rod being connected to the upper end inner wall of the rear side of the mounting groove, the guide block being provided at the end of the placement rod away from the positioning cylinder, the guide block being clamped by the group of first guide rods, the guide block being slidably connected to the first guide rod up and down, the third column gear being sleeved at the end of the placement rod away from the positioning cylinder, and the third column gear being located at the front side of the guide block, two second gear rods being vertically provided and both connected to the rear end surface of the guide plate, the second gear rod being used to mesh with the third column gear when the sliding mounting block moves downward, the second guide rods being provided with four and all connected to the lower end inner wall of the rear side of the mounting groove, two of the second guide rods forming a group, the group of second guide rods corresponding to the group of first guide rods up and down, and the gap between the group of second guide rods being the same as the gap between the group of first guide rods.

9. The sound insulation sponge mounting device for headphones according to claim 1, characterized in that: A pressure rod is provided on both sides of the sliding mounting block, and a clamping rod corresponding to the pressure rod is provided in the lower shell body. The clamping rod is located on both sides of the accommodating groove. The pressure rod is used to push the clamping rod toward the accommodating groove and embed into the accommodating groove as the sliding mounting block moves downward, thereby clamping the headset body.

10. The sound insulation sponge mounting device for headphones according to claim 3, characterized in that: A telescopic column is provided at the upper end of the positioning column, the lower end of the telescopic column is embedded in the positioning column and connected to the positioning column by setting a return spring, and a pressure ring is provided at the upper end of the telescopic column, which is used to abut against the raised part in the middle of the headset body when the placement rod is rotated 180° and moved downward.

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