Earplug

Abstract

This utility model relates to an earplug, including an insert, an operating component, a connector, and a valve assembly installed within the connector. The insert has a first cavity; the operating component has a second cavity containing fluid; the connector has a hollow channel; the valve assembly includes a movable sleeve, a first sealing ring, an adjusting rod passing through the movable sleeve, a second sealing ring, and an inner elastic element; an outer gap channel is provided between the outer wall of the movable sleeve and the inner wall of the connector, and the outer gap channel communicates with the second cavity; an inner gap channel is provided between the outer wall of the adjusting rod and the outer wall of the movable sleeve, and the inner gap channel communicates with the first cavity; the first sealing ring is installed at the end of the movable sleeve near the insert to switch the connection or closure of the outer gap channel and the first cavity; the second sealing ring is installed at the end of the adjusting rod near the operating component to switch the connection or closure of the inner gap channel and the second cavity. This utility model earplug can maintain long-term wear, providing a stable and comfortable fit.

Description

Technical Field

[0001] This utility model relates to the field of earplugs, and in particular to a waterproof and noise-proof earplug that is secure, comfortable to wear, and noise-reducing. Background Technology

[0002] Earplugs are generally made of silicone, low-pressure foam, or highly elastic polyester. After being inserted into the ear canal, they make close contact with the external auditory canal to block sound from entering the middle and inner ear, thus achieving sound insulation and protecting hearing.

[0003] However, traditional earplugs are relatively hard and can cause noticeable discomfort and pain when worn. Furthermore, traditional earplugs are difficult to adjust in size, are prone to falling out, and because everyone's ear canal size is different, it's inconvenient to adjust the earplugs, which can lead to them not staying in place or causing ear discomfort. Utility Model Content

[0004] Therefore, it is necessary to provide an earplug that addresses the problems of current traditional technologies. In view of the shortcomings of existing technologies, the purpose of this utility model is to provide a noise-canceling earplug that can be worn stably and comfortably for a long time, so as to solve the problems of earplugs falling out easily and having poor adaptability.

[0005] An earplug includes an insert, an operating component, a connector sealed to the insert and the operating component respectively, and a valve assembly installed within the connector. The insert has a first cavity; the operating component has a second cavity containing fluid; the connector has a hollow channel; the valve assembly includes a movable sleeve installed in the hollow channel, a first sealing ring, an adjusting rod passing through the movable sleeve, a second sealing ring, and an inner elastic element sleeved on the outer wall of the adjusting rod; an outer gap channel is provided between the outer wall of the movable sleeve and the inner wall of the connector, the outer gap channel communicating with the second cavity; an inner gap channel is provided between the outer wall of the adjusting rod and the outer wall of the movable sleeve, the inner gap channel communicating with the first cavity; the first sealing ring is installed at the end of the movable sleeve near the insert to switch the connection or closure of the outer gap channel with the first cavity; the second sealing ring is installed at the end of the adjusting rod near the operating component to switch the connection or closure of the inner gap channel with the second cavity.

[0006] When the operating member is compressed, the fluid flows into the first cavity after squeezing the first sealing ring through the outer gap channel. The fluid squeezes the inner wall of the insert, thereby expanding outward.

[0007] When the fluid stops flowing into the first cavity, the first seal re-seals and disconnects the external gap channel from the first cavity to maintain the stable expansion shape of the insert.

[0008] When the adjusting rod is pressed and moves relative to the movable sleeve toward the operating member, the adjusting rod causes the second seal to move away from the inner gap channel, and the fluid flows from the first cavity into the second cavity through the inner gap channel; and

[0009] When the adjusting rod is released, the inner elastic element pushes the adjusting rod toward the insert, causing the second sealing element to reseal and disconnect the communication between the inner gap channel and the second cavity.

[0010] In one embodiment, the valve assembly further includes an external elastic element sleeved on the outer wall of the movable sleeve; when the fluid stops flowing into the first cavity, the external elastic element pushes the movable sleeve back, thereby causing the first seal to reseal and disconnect the communication between the external gap channel and the first cavity, so as to maintain the stable expansion shape of the insert.

[0011] In one embodiment, the inner wall of the connector has a first limiting portion, the outer wall of the movable sleeve has a second limiting portion, and the two ends of the outer elastic member abut against the first limiting portion and the second limiting portion respectively; the inner wall of the movable sleeve has a third limiting portion, the outer wall of the adjusting rod has a fourth limiting portion, and the two ends of the inner elastic member abut against the third limiting portion and the fourth limiting portion respectively.

[0012] In one embodiment, the connector is cylindrical; the connector includes a first fixing part, a second fixing part, and a flange part located between the first fixing part and the second fixing part; the outer diameter of the flange part is larger than the outer diameter of the first fixing part and the outer diameter of the second fixing part, thereby forming a stepped portion at the connection between the first fixing part and the flange part and at the connection between the second fixing part and the flange part; the insert is sleeved and sealed on the first fixing part, and the operating part is sleeved and sealed on the second fixing part.

[0013] In one embodiment, both the outer elastic element and the inner elastic element are compression springs; when the earplug is in its natural state, the rebound force generated by the inner elastic element is greater than the rebound force generated by the outer elastic element.

[0014] In one embodiment, the inner wall of the connector near the insert is provided with a first sealing groove, which is used for the first sealing member to fit tightly and seal; the first sealing groove is a frustum-shaped groove, and the outer surface of the first sealing member is a corresponding matching frustum-shaped surface.

[0015] In one embodiment, the movable sleeve has a second sealing groove at the end near the operating member, the second sealing groove being used for the second sealing member to fit tightly and seal; the second sealing groove is a frustum-shaped groove, and the outer surface of the second sealing member is a corresponding matching frustum-shaped surface.

[0016] In one embodiment, the length of the adjusting rod is greater than the length of the movable sleeve, so as to ensure that the adjusting rod extends into the insert after being installed in the movable sleeve.

[0017] In one embodiment, the earplug further includes an insertion shaper disposed within the first cavity to support the external shape of the insert.

[0018] In one embodiment, the earplug further includes an operating shape-reducing feature disposed within the second cavity to support the external shape of the operating element.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. The earplugs are reusable and washable; 2. The earplugs expand from the inside out, making them highly adaptable and suitable for different people; 3. They are secure and not easily fall off; 4. They are easy to operate, maintain their shape after deformation, and have a good sealing effect. Attached Figure Description

[0021] Figure 1 This is a perspective view of the earplug according to the first embodiment of the present invention, wherein the earplug is in a natural state;

[0022] Figure 2 for Figure 1 A top view of the earplugs;

[0023] Figure 3 for Figure 2 A cross-sectional view of the earbud along line AA;

[0024] Figure 4 for Figure 2 Enlarged cross-sectional view of the earplug connector and valve assembly along line AA;

[0025] Figure 5 for Figure 1 A three-dimensional exploded view of the earbuds;

[0026] Figure 6 for Figure 5 A diagram of the earbuds from another angle;

[0027] Figure 7 for Figure 1 A diagram illustrating the effect of the earbud being squeezed during operation;

[0028] Figure 8 Similar to the earplug of this utility model Figure 3 A cross-sectional view in which the earbud is located Figure 6 The state;

[0029] Figure 9 for Figure 8 The earbuds are in a state of being squeezed and then returning to their original position;

[0030] Figure 10 for Figure 9 A diagram showing the earbud being pressed into the insertion part and the adjustment lever being pushed. Detailed Implementation

[0031] To facilitate understanding of this invention, a more comprehensive description will be provided below. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this invention.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0033] Please refer to Figures 1 to 10 This is an embodiment of the present invention, an earplug used to be inserted into a user's ear canal to reduce noise interference and prevent water from entering the ear through a seal. The earplug includes an insert 10, an operating component 20, a connector 30 connected to both the insert 10 and the operating component 20, and a valve assembly 40 installed within the connector 30. The simple working principle is as follows: the user inserts the insert 10 into the ear canal and presses the exposed operating component 20, causing fluid to flow into the insert 10, which expands to block and seal the ear canal. When not in use, the earplug is removed from the ear canal, and the valve assembly 40 is pushed by the insert 10, allowing fluid to flow back from the insert 10 to the operating component 20, restoring the earplug to its original state for future use. It is understood that two earplugs can be used for the user's left and right ears.

[0034] Specifically, the insert 10 has a first cavity 11; the operating member 20 has a second cavity 21 (wherein the partial outline of the operating member 20 in each figure is only to indicate its arcuate outline), and the second cavity 21 contains fluid; it is understood that in other embodiments, the first cavity 11 also contains fluid. The connector 30 has a hollow channel 31; the valve assembly 40 is installed in the hollow channel 31 to switch between a connected state and a closed state between the first cavity 11 and the second cavity 21. The valve assembly 40 includes a movable sleeve 51 installed in the hollow channel 31, a first sealing ring 52, an outer elastic member 53 sleeved on the outer wall of the movable sleeve 51, an adjusting rod 61 passing through the movable sleeve 51, a second sealing ring 62, and an inner elastic member 63 sleeved on the outer wall of the adjusting rod 61. An outer gap channel 70 is provided between the outer wall of the movable sleeve 51 and the inner wall of the connector 30, and the outer gap channel 70 communicates with the second cavity 21; an inner gap channel 80 is provided between the outer wall of the adjusting rod 61 and the outer wall of the movable sleeve 51, and the inner gap channel 80 communicates with the first cavity 11; a first sealing ring 52 is installed at the end of the movable sleeve 51 near the insert 10 to switch the connection or closure state of the outer gap channel 70 and the first cavity 11; a second sealing ring 62 is installed at the end of the adjusting rod 61 near the operating member 20 to switch the connection or closure state of the inner gap channel 80 and the second cavity 21.

[0035] In this embodiment, the end of the adjusting rod 61 near the insert 10 extends into the first cavity 11; the inner wall of the connecting member 30 has a first limiting part 311, the outer wall of the movable sleeve 51 has a second limiting part 512, and the two ends of the outer elastic member 53 abut against the first limiting part 311 and the second limiting part 512 respectively; the inner wall of the movable sleeve 51 has a third limiting part 513, the outer wall of the adjusting rod 61 has a fourth limiting part 614, and the two ends of the inner elastic member 63 abut against the third limiting part 513 and the fourth limiting part 614 respectively.

[0036] In its natural state, such as Figures 1 to 6 As shown, the two ends of the connector 30 are respectively sealed to the insert 10 and the operating member 20. The valve assembly 40 is located in the hollow channel 31. The hollow channel 31, the first cavity 11 and the second cavity 21 are interconnected to form a sealed chamber for fluid flow. The outer elastic member 53 pushes the movable sleeve 51 with its own rebound force to drive the first sealing ring 52 to block the sealing outer gap channel 70, thereby cutting off the connection between the outer gap channel 70 and the first cavity 11. The inner elastic member 63 pushes the adjusting rod 61 with its own rebound force to drive the second sealing ring 62 to block the inner gap channel 80, thereby cutting off the connection between the inner gap channel 80 and the second cavity 21. At this time, the first cavity 11 and the second cavity 21 are in a non-connected state.

[0037] like Figure 7 and Figure 8As shown, when the operating member 20 is compressed and deformed, reducing its volume, the fluid in the first cavity 11 pushes open the first sealing ring 52 through the outer gap channel 70 (the first cavity 11 itself is connected to the outer gap channel 70), pushing the first sealing ring 52 and the entire valve assembly 40 towards the insert 10. The fluid flows from the outer gap channel 70 into the first cavity 11, compressing the inner wall of the insert 10 and expanding outward to block the ear canal. At this time, the outer elastic member 53 is further compressed. After the insert 10 expands outward, when the fluid in the second cavity 21 stops flowing into the first cavity 11, that is, when the pressure of the fluid on the first sealing ring 52 is less than the elastic counterforce of the outer elastic member 53, the outer elastic member 53 pushes the movable sleeve 51 relative to the connecting member 30 towards the operating member 20 until the first sealing ring 52 blocks the connection between the outer gap channel 70 and the first cavity 11 again, preventing the fluid from flowing back from the first cavity 11 into the second cavity 21, completing the change in the usage state. Figure 9 As shown;

[0038] like Figure 10 As shown, when the insert 10 in use is pressed, the adjusting rod 61 is pushed, causing the second sealing ring 62 to move relative to the movable sleeve 51 towards the operating member 20. After the second sealing ring 62 leaves the movable sleeve 51, the inner gap channel 80 connects with the second cavity 21, and fluid flows from the first cavity 11 into the second cavity 21 through the inner gap channel 80. At this time, the inner elastic member 63 is further compressed; the insert 10 returns from the expanded state to its natural state, and the operating member 20 returns from the compressed state to its natural state. After the adjusting rod 61 is released and loses its pushing force, the inner elastic member 63 pushes the adjusting rod 61 and the second sealing ring 62 in the opposite direction towards the insert 10, causing the second sealing ring 62 to reseal and disconnect the connection between the inner gap channel 80 and the second cavity 21. The earplug returns to its initial natural state, i.e., as shown. Figure 3 The state shown.

[0039] Specifically, the operating element 20 is a soft, elastomer shell, and the second cavity 21 is a sealed chamber to contain fluid. This fluid can be air, water, oil, or other fluids. In various preferred embodiments, the operating element 20 is a deformable, soft gel with a certain degree of shape recovery; more specifically, it is made of molded silicone material. Silicone materials are chemically inert, biocompatible, durable, elastic, tough, easily molded into complex shapes through several different processes, easily permanently bonded together by silicone adhesives, and available in various formulations with a wide range of hardness, elongation, and other key mechanical properties. Specific silicone formulations are selected based on mechanical properties beneficial to the function of each particular component or part. It should be understood that alternative embodiments may employ other elastic materials, including but not limited to polyurethane rubber, nitrile, or latex rubber. In this embodiment, the operating element 20 is pot-shaped or potato-shaped; the operating element 20 has a mounting port 22 for connecting to the connector 30, the mounting port 22 communicating with the second cavity 21.

[0040] Furthermore, the earplug in this embodiment also includes an operating shaper 25 (wherein the partial outline of the operating shaper 25 in each figure is only to indicate its arcuate outline), which is disposed within the second cavity 21 and serves to support the external shape of the operating member 20 in its natural state. In this embodiment, the operating shaper 25 is a foam material that allows fluid to penetrate and be extruded. Further, the operating shaper 25 is foam cotton. When squeezed, the operating shaper 25 can be compressed into a very small volume and inserted into the operating part 20. In its natural state, the operating shaper 25 elastically returns to its original shape, filling and supporting the operating member 20. In other embodiments, the operating shaper 25 may be omitted.

[0041] The insert 10 is a soft, elastomeric shell forming a sealed first cavity 11. In various preferred embodiments, the insert 10 is a deformable, soft gel with a certain degree of shape recovery; more specifically, it is made of molded silicone material. Silicone materials are chemically inert, biocompatible, durable, elastic, tough, easily molded into complex shapes through several different processes, easily permanently bonded together by silicone adhesives, and available in a variety of formulations with a wide range of hardness, elongation, and other key mechanical properties. Specific silicone formulations are selected based on mechanical properties beneficial to the function of each particular component or part. It should be understood that alternative embodiments may employ other elastic materials, including but not limited to polyurethane rubber, nitrile, or latex rubber. In this embodiment, the insert 10 is provided in the form of a hollow column or a hollow handle; the insert 10 has a connection port 12 for connecting to the connector 30, the connection port 12 communicating with the first cavity 11. The insert 10 is an expandable structure, that is, when there is enough fluid in the first cavity 11 inside the insert 10 to generate outward pressure, the insert 10 expands outward, so that its external geometry elastically increases from the original cylindrical shape to expand into a spherical shape, filling and sealing the ear canal.

[0042] Furthermore, the earplug in this embodiment also includes an insertion shaper 15, which is disposed within the first cavity 11 and serves to support the external shape of the insert 10 in its natural state. In this embodiment, the operating shaper 25 is a foam material that allows fluid to penetrate and be extruded. Further, the operating shaper 25 is foam cotton. The function of the insertion shaper 1 is to provide rigidity to the insert 10 when inserted into the ear canal for support. Since the insert 10 is a soft gel, it is difficult to insert it smoothly into the ear canal using only the insert 10. It is understood that the insertion shaper 15 and the operating shaper 25 are not essential, but rather serve as better auxiliary functions. In this embodiment, the end of the insertion shaper 15 facing the valve assembly 40 has a first clearance space 150 for the movement of the movable sleeve 51 and the adjusting rod 61. The end of the operating shaper 25 facing the valve assembly 40 has a second clearance space 250 for the movement of the adjusting rod 61. In other embodiments, the insertion shaper 15 may be omitted.

[0043] The insert 10 is an expandable design, meaning it is designed to provide favorable expansion behavior. In this embodiment, the wall thickness of the insert 10 ranges from 0.1 mm to 0.5 mm. The wall thickness of the operating part 20 ranges from 0.4 mm to 0.8 mm.

[0044] like Figure 5 and Figure 6As shown, the connector 30 is cylindrical. The connector 30 includes a first fixing part 33, a second fixing part 34, and a flange part 35 located between the first fixing part 33 and the second fixing part 34. The outer diameter of the flange part 35 is larger than the outer diameters of the first fixing part 33 and the second fixing part 34, thus forming stepped portions at the connection points of the first fixing part 33 and the flange part 35, and at the connection points of the second fixing part 34 and the flange part 35, respectively. The insert 10 is fitted and sealed onto the first fixing part 33, and the operating part 20 is fitted and sealed onto the second fixing part 34. Specifically, the first fixing part 33 is embedded into the connection port 12 of the insert 10 for a sealed connection; the second fixing part 34 is embedded into the mounting port 22 of the operating part 20 for a sealed connection; in this embodiment, the insert 10 abuts against the flange part 35; the operating part 20 abuts against the flange part 35, thereby increasing the connection area. In this embodiment, the insert 10 and the connector 30 are bonded and fixed. The operating part 20 and the connector 30 are bonded and fixed. In other embodiments, the insert 10 and the operating member 20 may be fixedly connected to the connector 30 by other means, such as ultrasonic welding.

[0045] The connector 30 has a first sealing groove 39 on the inner wall of the free end of the first fixing part 33 near the insert 10. This first sealing groove 39 is used for the first sealing element 52 to fit tightly and seal. The rebound force of the outer elastic element 53 drives the movable sleeve 51, thereby causing the first sealing element 52 to tightly squeeze the first sealing groove 39 of the connector 30, thus blocking the sealing gap channel 70, i.e., cutting off the communication between the outer gap channel 70 and the first cavity 11. In this embodiment, the first sealing groove 39 is a frustum-shaped groove (i.e., trumpet-shaped), and the outer surface of the first sealing element 52 is a corresponding matching frustum-shaped surface. In other embodiments, the first sealing groove 39 can also be a stepped groove, and the first sealing element 52 is correspondingly set as a matching stepped ring, which can achieve the function of tight sealing. The inner wall of the first fixing part 33 has a first limiting part 311. The inner wall of the connector 30, from the first limiting portion 311 toward the operating member 20, has an inner diameter larger than that of the first limiting portion 311, thereby facilitating the insertion and installation of the external elastic member 53 and its abutment against the first limiting portion 311. In this embodiment, the connector 30 can be made of plastic or metal, and in one embodiment, aluminum can be selected.

[0046] The movable sleeve 51 is tubular. A first annular groove 517 is provided at the end of the movable sleeve 51 near the insert 10 for mounting the first sealing element 52. A second limiting part 512 is provided at the end of the movable sleeve 51 near the operating element 20. The outer diameter of the second limiting part 512 is larger than the outer diameter of other parts of the movable sleeve 51, allowing one end of the external elastic element 53 to abut against it. The outer wall of the movable sleeve 51 and the inner wall of the connecting element 30 form an outer gap channel 70. The outer gap channel 70 is annular. The external elastic element 53 is located within the outer gap channel 70, and its two ends abut against the first limiting part 311 and the second limiting part 512, respectively. After assembly, the external elastic element 53 is in a compressed state, meaning the distance between the first limiting part 311 and the second limiting part 512 after assembly is less than the natural elongation of the external elastic element 53. Therefore, the assembled external elastic element 53 generates a rebound force that pushes the movable sleeve 51 towards the operating element 20 (using the connecting element 30 as a reference, i.e., a leverage base). The movable sleeve 51 has a through hole 518 at its center, extending through both ends, for the adjustment rod 61 to be inserted. A third limiting part 513 is located on the inner surface of the end of the movable sleeve 51 near the operating member 20, i.e., on the inner wall of the through hole 518 near the operating member 20. The inner diameter of the third limiting part 513 is smaller than the inner wall of the other parts of the through hole 518 of the movable sleeve 51, allowing the inner elastic member 63 to abut against it.

[0047] The movable sleeve 51 has a second sealing groove 59 near the end of the operating member 20. This second sealing groove 59 is used for the second sealing member 62 to fit tightly and seal. The rebound force of the inner elastic member 63 drives the adjusting rod 61, thereby causing the second sealing member 62 to tightly press against the second sealing groove 59 of the movable sleeve 51, thus blocking the inner gap channel 80, i.e., cutting off the communication between the inner gap channel 80 and the second cavity 21. In this embodiment, the second sealing groove 59 is a frustum-shaped groove (i.e., trumpet-shaped), and the outer surface of the second sealing member 62 is a corresponding matching frustum-shaped surface. In other embodiments, the second sealing groove 59 can also be a stepped groove, and the second sealing member 62 is correspondingly set as a matching stepped ring, which can achieve the sealing function.

[0048] In this embodiment, the second limiting part 512, the third limiting part 513, and the second sealing groove 59 are all disposed at the end of the movable sleeve 51 near the operating member 20. The second limiting part 512 is located on the outer wall of the movable sleeve 51, the third limiting part 513 is located on the inner wall of the movable sleeve 51, and the second sealing groove 59 communicates with the through hole 518. In this embodiment, the movable sleeve 51 can be made of plastic or metal; in one embodiment, aluminum can be selected.

[0049] The adjusting rod 61 is arranged in the shape of a longitudinal rod. The length of the adjusting rod 61 is greater than the length of the movable sleeve 51 to ensure that the adjusting rod 61 has sufficient length to extend into the insert 10 after being installed in the movable sleeve 51. The fourth limiting part 614 is located in the middle of the outer wall of the adjusting rod 61. The outer diameter of the section of the adjusting rod 61 near the operating part 20 is smaller than the outer diameter of the fourth limiting part 614 to allow the inner elastic member 53 to be fitted and installed. The end of the adjusting rod 61 near the operating part 20 is provided with a second annular groove 617 for installing the second sealing member 62. The two ends of the inner elastic member 63 abut against the third limiting part 513 and the fourth limiting part 614 respectively; when assembled, the inner elastic member 63 is in a compressed state, that is, the distance between the third limiting part 513 and the fourth limiting part 614 after assembly is less than the natural elongation length of the inner elastic member 63, so that the assembled inner elastic member 63 generates a rebound force in the direction of pushing the adjusting rod 61 toward the insert 10 (with the movable sleeve 51 as the reference, i.e., the leverage base). In this embodiment, the adjusting rod 61 can be made of plastic or metal, and in one embodiment, aluminum can be selected.

[0050] In this embodiment, both the outer elastic element 53 and the inner elastic element 63 are compression springs. The diameter of the outer elastic element 53 is larger than the diameter of the inner elastic element 63 (due to installation requirements). Furthermore, in the earbud's natural state after assembly, the rebound force generated by the inner elastic element 63 is greater than the rebound force generated by the outer elastic element 53 (the specific reasons will be explained in detail later). In this embodiment, both the first sealing element 52 and the second sealing element 62 are sealing rings; specifically, both the first sealing element 52 and the second sealing element 62 are silicone sealing rings.

[0051] During assembly, such as Figure 3 As shown, the adjusting rod 61 is first inserted into the inner elastic element 63. Then, the adjusting rod 61, carrying the inner elastic element 63, is inserted into the through hole 518 from the end of the movable sleeve 51 near the insert 10 (i.e., the end where the first annular groove 517 is located). The inner elastic element 63 abuts against the third limiting part 513 of the movable sleeve 51. After the adjusting rod 61 passes through the other end of the movable sleeve 51, the second sealing element 62 is installed and fixed on the second annular groove 617. After the adjusting rod 61 is released, the inner elastic element 63, based on the third limiting part 513 of the movable sleeve 51, pushes the adjusting rod 61 towards the insert 10, thereby tightly pressing the second sealing element 62 against the second sealing groove 59. At this time, the second sealing element 62 seals the end of the inner gap channel 80 near the operating part 20.

[0052] Then, the movable sleeve 51 is fitted with the outer elastic member 53 and inserted into the hollow channel 31 from the end of the connector 30 near the operating part 20, i.e., the second fixing part 34. The outer elastic member 53 abuts against the second limiting part 512 of the movable sleeve 51 and the first limiting part 311 of the inner wall of the connector 30. The movable sleeve 51 continues to extend out of the connector 30 and compresses the outer elastic member 53 until the first sealing member 52 is installed and fixed on the first annular groove 517. After the movable sleeve 51 is released, the outer elastic member 53 pushes the movable sleeve 51 towards the operating part 20 based on the first limiting part 311 of the connector 30, thereby pressing the first sealing member 31 tightly against the first sealing groove 39. At this time, the first sealing member 31 seals the end of the outer gap channel 70 near the insert 10.

[0053] At this point, the entire valve assembly 40 has been assembled. Finally, the insert 10 is fitted and fixed onto the first fixing part 33, and the operating part 20, after being filled with fluid, is fitted and fixed onto the second fixing part 34. Specifically, the insert 10 and the operating part 20 are bonded and sealed to the connector 30 with adhesive. The assembly of the entire earplug is now complete.

[0054] When working, combine the preceding paragraphs and Figures 7 to 10 As shown, after the insert 10 is inserted into the ear canal, squeezing the operating member 20 (applying pressure F1) that protrudes from the ear canal causes the fluid in the second cavity 21 of the operating member 20 to force open the first seal 52 through the outer gap channel 70. The first seal 52 then moves the adjusting rod 61 toward the insert 10 (as shown). Figure 8 (As indicated by the arrow below); fluid flows into the first cavity 11 of the insert 10 and causes the insert 10 to expand and fit tightly against the inner wall of the ear canal, achieving a sealing effect. After the fluid flows into the first cavity 11 until it stops flowing, the first sealing element 52 is reduced to disappearing due to the compression of the fluid, and the outer elastic element 53 pushes back the movable sleeve 51, thereby causing the first sealing element 52 to reseal and disconnect the connection between the outer gap channel 70 and the first cavity 11 (as shown by the arrow below); fluid flows into the first cavity 11 and causes the insert 10 to expand and fit tightly against the inner wall of the ear canal, achieving a sealing effect. Figure 9 (As indicated by the arrow below), to prevent fluid leakage from the first cavity 11 and subsequent failure, thus maintaining a stable expansion shape of the insert 10. Figures 7 to 9 The expanded state of the insert 10 shown is a schematic diagram from the outside for the purpose of aiding understanding. It is not a diagram of the state after it is inserted into the ear canal, because when it is inserted into the ear canal and expands, it will be squeezed by the inner wall of the ear canal. The insert 10 will elastically fill the gap between the insert and the ear canal, thereby increasing the sealing and sound insulation effect.

[0055] After use, remove the earbuds and press the insert 10 relative to the connector 30 or the operating member 20 (apply pressure F2). This pushes the adjusting rod 61 relative to the movable sleeve 51 towards the operating member 20 via the insert 10 (e.g., ...). Figure 10(As indicated by the arrow below), the adjusting rod 61 moves the second seal 62 away from the inner gap channel 80. Fluid flows into the operating member 20 through the inner gap channel 80 from the insert 10 (due to the pressure of its own expansion and subsequent recovery, and the pressure applied by the insert). Once the operating member 20 returns to its original state, the adjusting rod 61 is released. The rebound force of the inner elastic member 63 pushes the adjusting rod 61 towards the insert 10, causing the second seal 62 to reseal the inner gap channel 80 (i.e., severing the connection between the inner gap channel 80 and the second cavity 21). The earplug returns to its original state (as shown by the arrow below). Figure 3 (As shown), for the next use. The insertion shape variant 15 allows the insert 10 to better maintain its shape when inserted into the ear canal or to better return to its original shape after being pressed. Similarly, the operation shape variant 25 can better assist in restoring the operation body 20 to its original shape when fluid flows into it.

[0056] The earplug of this utility model has the following advantages through its ingenious structural design: 1. The earplug can be washed and reused repeatedly; 2. The earplug expands from the inside out, making it highly adaptable and suitable for different people; 3. It has good firmness and is not easy to fall off; 4. It is easy to operate, maintains its shape after deformation, and has a good sealing effect.

[0057] Furthermore, during the process of restoring the device to its natural state after use, the user moves the adjustment rod 61 by pushing the insert 10, thereby pushing the second sealing ring 62 away from the inner gap channel 80 and connecting the inner gap channel 80 with the second cavity 21. This is done not by compressing the insert 10 to force the second sealing ring 62 open through fluid pressure, and there is a specific reason for this. If the second sealing ring 62 could be opened simply by compressing the insert 10 to create fluid pressure, it would be easy for the insert 10 to experience backflow due to pressure from the inner wall of the ear canal during initial use. This would make it difficult for the insert 10 to maintain its expanded state, failing to achieve the desired sealing, sound insulation, and secure placement within the ear canal. Furthermore, in its natural state after assembly, the elastic force of the inner elastic element 63 is greater than that of the outer elastic element 53. This is because, during the aforementioned operation, when the operating member 20 is compressed, the fluid pressure can counteract the elastic force of the outer elastic element 53 from pushing open the first seal 52 and can also compress the outer elastic element 53. To prevent the second seal 62 from being pushed open by the fluid when the insert 10 is compressed, the elastic force of the inner elastic element 63 needs to be sufficiently large to prevent the insert 10 from expanding and failing. In other words, when the earplug is in its natural state, both the inner elastic element 63 and the outer elastic element 53 are in a compressed state, and the rebound force of the inner elastic element 63 is greater than that of the outer elastic element 53.

[0058] Understandably, the first seal 52 can also be replaced with a one-way valve structure (only one-way flow is allowed, such as a one-way air valve), that is, after the fluid is squeezed, it can flow into the first cavity 11 from the outer gap channel 70, while the fluid in the first cavity 11 cannot flow into the outer gap channel 70 from the first cavity 11. In this case, the outer elastic element 53 can be omitted.

[0059] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An earplug, characterized in that, The device includes an insert, an operating component, a connector sealed to both the insert and the operating component, and a valve assembly installed within the connector. The insert has a first cavity; the operating component has a second cavity containing fluid; the connector has a hollow channel; the valve assembly includes a movable sleeve installed in the hollow channel, a first sealing ring, an adjusting rod passing through the movable sleeve, a second sealing ring, and an inner elastic element fitted onto the outer wall of the adjusting rod; an outer gap channel is provided between the outer wall of the movable sleeve and the inner wall of the connector, communicating with the second cavity; an inner gap channel is provided between the outer wall of the adjusting rod and the outer wall of the movable sleeve, communicating with the first cavity; the first sealing ring is installed on the movable sleeve near the insert to switch the connection or closure of the outer gap channel with the first cavity; the second sealing ring is installed on the adjusting rod near the operating component to switch the connection or closure of the inner gap channel with the second cavity. When the operating member is compressed, the fluid flows into the first cavity after squeezing the first sealing ring through the outer gap channel. The fluid squeezes the inner wall of the insert, thereby expanding outward. When the fluid stops flowing into the first cavity, the first seal re-seals and disconnects the external gap channel from the first cavity to maintain the stable expansion shape of the insert. When the adjusting rod is pressed and moves relative to the movable sleeve toward the operating member, the adjusting rod causes the second seal to move away from the inner gap channel, and the fluid flows from the first cavity into the second cavity through the inner gap channel; and When the adjusting rod is released, the inner elastic element pushes the adjusting rod toward the insert, causing the second sealing element to reseal and disconnect the communication between the inner gap channel and the second cavity.

2. The earplug according to claim 1, characterized in that, The valve assembly also includes an external elastic element sleeved on the outer wall of the movable sleeve; when the fluid stops flowing into the first cavity, the external elastic element pushes the movable sleeve back, thereby causing the first sealing element to reseal and disconnect the communication between the external gap channel and the first cavity, so as to maintain the stable expansion shape of the insert.

3. The earplug according to claim 2, characterized in that, The inner wall of the connector has a first limiting part, the outer wall of the movable sleeve has a second limiting part, and the two ends of the outer elastic member abut against the first limiting part and the second limiting part respectively; the inner wall of the movable sleeve has a third limiting part, the outer wall of the adjusting rod has a fourth limiting part, and the two ends of the inner elastic member abut against the third limiting part and the fourth limiting part respectively.

4. The earplug according to claim 2, characterized in that, The connector is cylindrical in shape; the connector includes a first fixing part, a second fixing part, and a flange part located between the first fixing part and the second fixing part; the outer diameter of the flange part is larger than the outer diameter of the first fixing part and the outer diameter of the second fixing part, so that the connection between the first fixing part and the flange part and the connection between the second fixing part and the flange part respectively form a stepped part; the insert is sleeved and sealed on the first fixing part, and the operating part is sleeved and sealed on the second fixing part.

5. The earplug according to claim 2, characterized in that, Both the outer and inner elastic elements are compression springs; when the earplug is in its natural state, the rebound force generated by the inner elastic element is greater than the rebound force generated by the outer elastic element.

6. The earplug according to claim 1, characterized in that, The connector has a first sealing groove on the inner wall of one end near the insert, which is used for the first sealing member to fit tightly and seal; the first sealing groove is a frustum-shaped groove, and the outer surface of the first sealing member is a corresponding matching frustum-shaped surface.

7. The earplug according to claim 1, characterized in that, The movable sleeve has a second sealing groove at the end near the operating member. The second sealing groove is used for the second sealing member to fit tightly and seal. The second sealing groove is a frustum-shaped groove, and the outer surface of the second sealing member is a corresponding frustum-shaped surface.

8. The earplug according to claim 1, characterized in that, The length of the adjusting rod is greater than the length of the movable sleeve, so that the adjusting rod can be inserted into the insert after being installed in the movable sleeve.

9. The earplug according to claim 1, characterized in that, It also includes an insert shaper, which is disposed in the first cavity to support the external shape of the insert.

10. The earplug according to claim 1, characterized in that, It also includes an operating shaper, which is disposed in the second cavity to support the external shape of the operating element.

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