Combined hearing protection noise reduction device

Abstract

The present invention discloses a combined hearing protection and noise reduction device, belonging to the field of hearing protection technology. The device comprises a noise-reducing earmuff body and a noise-reducing earplug body for use therewith. The noise-reducing earplug body comprises a paired mating cover, on which multiple noise-reducing earplug bodies are provided. By arranging the noise-reducing earplug body and the noise-reducing earmuff body, the present invention can select a switching mode between a single use mode of the noise-reducing earplug and a combined use mode of the earplug and earmuff according to the decibel level of the noise, thereby meeting the needs of hearing protection under different noise levels. The wearer's movement drives the magnetic ring in the heat dissipation duct to move, thereby continuously generating a driving force for the liquid in the heat dissipation duct. During the flow of the liquid, the heat in the multiple noise-reducing earplug bodies is dissipated outward, achieving effective heat dissipation of the multiple noise-reducing earplug bodies and ensuring a heat dissipation effect in the combined use mode of the earplug and earmuff.

Description

Technical Field

[0001] The present invention relates to the technical field of hearing protection, and in particular to a combined hearing protection noise reduction device. Background Art

[0002] Hearing protection devices come in a variety of shapes, sizes, and models, with varying attenuation characteristics and uses. The two main types of hearing protection are earplugs and earmuffs. Earplugs are fitted and made of closed-cell foam, custom silicone, or thermoplastic elastomer. Closed-cell foam earplugs are rolled into a ball and inserted into the ear canal, where they are locked in place. After insertion, they expand, providing varying degrees of attenuation depending on the depth of the earplug in the ear canal. Earmuffs, on the other hand, are donut-shaped and attached to an elastic headband or helmet. They often don't provide the same level of noise reduction as earplugs.

[0003] In some noisy working environments, earplugs and earmuffs are often needed to be used together. Currently, earplugs and earmuffs are just a simple combination without a reliable connection between them. When the earplugs are inserted deep into the ear canal, they are in a sealed environment of the earmuffs, which has poor ventilation and will cause a large amount of sweat to be produced in the ear canal, affecting the wearing experience. At the same time, the sweat will also affect the sound insulation effect of the earplugs. Based on this, a combined hearing protection and noise reduction device is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the existing earplugs and earmuffs are simply combined without a reliable connection between them. When the earplugs are inserted deep into the ear canal, they are in a sealed environment of the earmuffs, which has poor ventilation and causes a large amount of sweat to be generated in the ear canal, affecting the wearing experience. At the same time, the sweat also affects the sound insulation effect of the earplugs. A combined hearing protection and noise reduction device is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A combined hearing protection and noise reduction device comprises a noise reduction earmuff body and a noise reduction earplug body used in conjunction therewith, wherein the noise reduction earplug body comprises a pair of matching covers, the two matching covers being connected by a main frame, and the matching covers being provided with multiple noise reduction earplug bodies;

[0007] The noise reduction earmuff body includes an earmuff frame and shielding earmuffs arranged at both ends of the earmuff frame. The earmuff frame is connected to the main frame via a snap-fit ​​assembly. The shielding earmuff is provided with an assembly docking piece connected to the multiple noise reduction earplug body inside. The shielding earmuff is provided with a soundproof cover. A metal heat conductive sheet is provided at the center of the earmuff frame. The metal heat conductive sheet is connected to the card assembly docking piece via a delivery pipeline. Magnetic drive components are provided on both sides of the earmuff frame to promote the flow of heat dissipation liquid in the delivery pipeline.

[0008] The multi-noise reduction earplug body consists of a silicone bonding layer at the rear end, a sound insulation cotton pressure-resistant layer in the middle, and a memory foam reset layer at the front end. The sound insulation cotton pressure-resistant layer is provided with a layer of corresponding grooves that are adapted to the memory foam reset layer, and the silicone bonding layer is provided with two layers of corresponding grooves that are adapted to the sound insulation cotton pressure-resistant layer.

[0009] Preferably, the sound insulation cotton pressure-resistant layer is fixedly connected to the terminal column, the memory cotton reset layer is connected to the terminal column through a telescopic column, the silicone bonding layer is pasted on the matching cover, and the terminal column extends outward through the silicone bonding layer and is connected to a terminal combination plate.

[0010] Preferably, the main frame includes a bracket and a bracket seat connected to the matching cover, the bracket seat is provided with a connecting groove, the end of the bracket is located in the connecting groove and is rotatably connected to the inner wall of the connecting groove through a rotating shaft;

[0011] A pressure support rod is fixedly connected to the bracket seat, and the pressure support rod is connected to the side wall of the bracket through a resistance spring.

[0012] Preferably, the snap-fit ​​assembly comprises a plug-in rod fixedly connected to the end of the pressure-applying support rod, the end of the plug-in rod is provided with a buckle, and the inner side wall of the earmuff frame is provided with a slot adapted to the buckle.

[0013] Preferably, the assembly docking piece includes a docking seat fixedly arranged inside the shielding earmuff, and the docking seat is provided with a terminal interface adapted to the terminal combination plate.

[0014] Preferably, a heat dissipation plate is provided on the back of the sound insulation cotton pressure-resistant layer, a heat dissipation channel is provided inside the heat dissipation plate, both ends of the heat dissipation channel pass through the terminal column and the side wall of the terminal combination plate, and are connected to the terminal tube, the terminal combination plate is fixedly connected to a resistance butt tube inserted into the terminal tube, the inner side wall of the terminal combination plate is connected to a cross bar through a spring resistance column, the two ends of the cross bar respectively pass through the terminal tubes on both sides, and are fixedly connected to a blocking ring sleeved on the resistance butt tube, and a communication port is provided on the outer side wall of the resistance butt tube;

[0015] The end pipe is provided with a rectangular opening for the cross bar to move, and the cross bar is provided with an isolation piece to ensure the sealing of the rectangular opening.

[0016] Preferably, a heat dissipation pipe is provided inside the metal heat conductive sheet, both ends of the heat dissipation pipe are connected to the delivery pipe, the other end of the delivery pipe passes through the earmuff frame and extends into the docking seat, and a fan-shaped closed layer is provided inside the delivery pipe at the docking seat.

[0017] Preferably, the magnetic drive component includes a drop-force opening opened on the earmuff frame, a sliding column is provided on the inner wall of the drop-force opening, the drop-force opening is connected to a magnetic block through a sleeve spring sleeved on the sliding column, the delivery pipelines are respectively distributed on both sides of the drop-force opening, and magnetic rings that are magnetically attracted to the magnetic block are provided inside the delivery pipelines located on both sides of the drop-force opening, and a one-way closed layer is provided inside the magnetic rings.

[0018] Preferably, the soundproof cover is provided with an assembly notch for the main frame to be assembled, and the side wall of the bracket seat is fixedly connected with an isolation compensation layer adapted to the assembly notch.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention provides a noise reduction earplug main body and a noise reduction earmuff main body, and can select a switching mode between a noise reduction earplug standalone use mode and an earplug and earmuff combined use mode according to the decibel level of the noise, thereby meeting the needs of hearing protection under different levels of noise conditions.

[0021] 2. The present invention configures the earplug into a multiple noise reduction earplug body consisting of a silicone bonding layer, a sound insulation cotton pressure-resistant layer, and a memory foam reset layer. The inner layer of memory foam is used to ensure the reset effect, and the rear silicone bonding layer is used to ensure close contact with the ear canal skin and generate pressure on the sound insulation cotton pressure-resistant layer, thereby ensuring the effect of sound insulation and noise reduction.

[0022] 3. The present invention generates a driving force on the magnetic block through the wearer's movement, thereby driving the magnetic ring in the heat dissipation duct to move, thereby continuously generating a driving force on the liquid in the heat dissipation duct. During the flow of the liquid, the heat in the multiple noise reduction earplug body will be brought out to the outside, achieving effective heat dissipation of the multiple noise reduction earplug body and ensuring the heat dissipation effect in the combined use mode of earplugs and earmuffs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a combined hearing protection and noise reduction device proposed by the present invention;

[0024] Figure 2 This is a schematic structural diagram of a noise reduction earplug body in a combined hearing protection and noise reduction device proposed by the present invention;

[0025] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 4 This is a schematic structural diagram of multiple noise reduction earplug bodies in a combined hearing protection and noise reduction device proposed by the present invention;

[0027] Figure 5 This is a schematic diagram of the assembled three-dimensional structure of the assembled docking parts in the combined hearing protection and noise reduction device proposed by the present invention;

[0028] Figure 6 This is a schematic cross-sectional view of an assembly docking piece in a combined hearing protection and noise reduction device proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the cross-sectional structure of the drop-out port of a combined hearing protection and noise reduction device proposed by the present invention.

[0030] In the figure: 1. Matching cover; 2. Earmuff frame; 3. Shielding earmuff; 4. Soundproof cover; 5. Metal heat conductive plate; 6. Delivery pipeline; 7. Silicone bonding layer; 8. Soundproof cotton pressure-resistant layer; 9. Memory foam reset layer; 10. Terminal column; 11. Telescopic column; 12. Terminal combination plate; 13. Bracket seat; 14. Connection groove; 15. Pressure support rod; 16. Plug rod; 17. Buckle; 18. Slot; 19. Docking seat; 20. Heat dissipation plate; 21. Terminal tube; 22. Resistance docking tube; 23. Cross bar; 24. Blocking ring; 25. Connecting port; 26. Fan-shaped closing layer; 27. Drop force port; 28. Magnetic block; 29. ​​Magnetic ring; 30. One-way closing layer; 31. Assembly notch; 32. Isolation compensation layer; 33. Spring resistance column. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0034] Example, see Figures 1 to 7 A combined hearing protection and noise reduction device includes a noise reduction earmuff body and a noise reduction earplug body used in conjunction therewith. The noise reduction earplug body includes a pair of matching covers 1, the two matching covers 1 are connected by a main frame, and multiple noise reduction earplug bodies are arranged on the matching covers 1;

[0035] Furthermore, the main frame includes a bracket and a bracket seat 13 connected to the matching cover 1. A connecting groove 14 is provided on the bracket seat 13. The end of the bracket is located in the connecting groove 14 and is rotatably connected to the inner wall of the connecting groove 14 through a rotating shaft. A pressure support rod 15 is fixedly connected to the bracket seat 13, and the pressure support rod 15 is connected to the side wall of the bracket through a resistance spring.

[0036] It is worth noting that the resistance spring always applies outward pressure to the pressure support rod 15. The bracket seat 13, which is rotatably connected at both ends of the bracket, will cause the multiple noise-reducing earplug bodies set on the bracket seat 13 to always apply pressure to the ear canal under the action of the pressure support rod 15, thereby ensuring that under normal use, the multiple noise-reducing earplug bodies can fit tightly into the ear canal to ensure the noise reduction effect.

[0037] The noise reduction earmuff body includes an earmuff frame 2 and shielding earmuffs 3 arranged at both ends of the earmuff frame 2. The earmuff frame 2 is connected to the main frame through a snap-fit ​​assembly.

[0038] Furthermore, the snap-fit ​​assembly includes an inserting rod 16 fixedly connected to the end of the pressure support rod 15 , a buckle 17 is provided at the end of the inserting rod 16 , and a slot 18 adapted to the buckle 17 is provided on the inner side wall of the earmuff frame 2 .

[0039] When assembly is required, the buckle 17 can be matched with the slot 18 to achieve the corresponding combination between the two. The structure is made of plastic material with plasticity, so the assembly of the assembly parts can be done after the assembly of the mating parts is completed to ensure that the assembly mating parts will not fall off.

[0040] The shielding earmuff 3 is provided with an assembly docking piece connected to the multiple noise reduction earplug body inside, and a soundproof cover body 4 is provided on the shielding earmuff 3. The soundproof cover body 4 is provided with an assembly notch 31 for the main frame to be assembled. The side wall of the bracket seat 13 is fixedly connected with an isolation compensation layer 32 adapted to the assembly notch 31. Its arrangement can ensure the sound insulation effect of the soundproof cover body 4 when used after assembly.

[0041] A metal heat conducting sheet 5 is provided at the center of the earmuff frame 2, and the metal heat conducting sheet 5 is connected to the card assembly docking piece through a delivery pipe 6;

[0042] Furthermore, a heat dissipation pipe is provided inside the metal heat conductive sheet 5, and both ends of the heat dissipation pipe are connected to the delivery pipe 6. The other end of the delivery pipe 6 passes through the earmuff frame 2 and extends into the docking seat 19. A fan-shaped closed layer 26 is provided inside the delivery pipe 6 located at the docking seat 19.

[0043] The metal heat conductive sheet 5 can volatilize the heat, thereby taking out the heat from the multiple noise reduction earplug body for volatilization, achieving the heat dissipation effect.

[0044] Furthermore, the assembly docking piece includes a docking seat 19 fixedly arranged inside the shielding earmuff 3 , and a terminal interface adapted to the terminal assembly plate 12 is provided on the docking seat 19 .

[0045] Furthermore, a heat dissipation plate 20 is provided on the back of the sound insulation cotton pressure-resistant layer 8, and a heat dissipation channel is opened inside the heat dissipation plate 20. The two ends of the heat dissipation channel pass through the terminal column 10 and the side wall of the terminal combination plate 12, and are connected to the terminal tube 21. The terminal combination plate 12 is fixedly connected to a resistance butt tube 22 inserted into the terminal tube 21. The inner side wall of the terminal combination plate 12 is connected to a cross bar 23 through a spring resistance column 33. The two ends of the cross bar 23 respectively pass through the terminal tubes 21 on both sides and are fixedly connected to a blocking ring 24 sleeved on the resistance butt tube 22. A communication port 25 is opened on the outer wall of the resistance butt tube 22.

[0046] When the docking seat 19 is combined with the terminal combination disk 12, the spring resistance column 33 connected thereto will be squeezed, so that the spring resistance column 33 drives the cross bar 23 to move inward, thereby driving the blocking rings 24 connected on both sides thereof to move, thereby opening the connecting port 25 originally blocked by the blocking ring 24, and realizing the connection between the terminal pipe 21 and the resistance docking pipe 22.

[0047] The end pipe 21 is provided with a rectangular opening for the cross bar 23 to move, and the cross bar 23 is provided with an isolation piece to ensure the sealing of the rectangular opening.

[0048] It should be noted that since a rectangular opening is provided on the end pipe 21, leakage may easily occur, so an isolation plate is provided on the cross bar 23. The setting of the isolation plate can always effectively seal the rectangular opening on the end pipe 21 to avoid leakage.

[0049] Magnetic drive components are provided on both sides of the earmuff frame 2 to promote the flow of heat dissipation liquid in the delivery pipe 6. The magnetic drive components include a drop opening 27 provided on the earmuff frame 2, a sliding column provided on the inner wall of the drop opening 27, and a magnetic block 28 connected to the drop opening 27 via a sleeve spring sleeved on the sliding column. The delivery pipes 6 are respectively distributed on both sides of the drop opening 27. Magnetic rings 29 that are magnetically attracted to the magnetic block 28 are provided inside the delivery pipes 6 on both sides of the drop opening 27. A one-way closed layer 30 is provided inside the magnetic ring 29. The one-way closed layers 30 on both sides of the drop opening 27 are arranged opposite to each other.

[0050] The one-way closed layer 30 is a fan-shaped conical silicone material. When it moves along the cone, the one-way closed layer 30 is in an open state and will not push the liquid in the heat dissipation duct. When it moves against the cone, the one-way closed layer 30 is in a closed state and will push the liquid in the heat dissipation duct, thereby achieving continuous transportation of the liquid in the heat dissipation duct.

[0051] It should be noted that when the wearer is exercising, the movement will cause the magnetic block 28 supported by the spring to move due to the inertia of gravity, and during the movement, the magnetic ring 29 in the heat dissipation duct will be driven to move, thereby continuously generating a driving force for the liquid in the heat dissipation duct and realizing the flow of the liquid in the heat dissipation duct. During the flow of the liquid, the heat in the multiple noise reduction earplug body will be brought out, thereby achieving effective heat dissipation of the multiple noise reduction earplug body.

[0052] The multi-noise reduction earplug body is composed of a silicone bonding layer 7 at the rear end, a sound insulation cotton pressure-resistant layer 8 in the middle and a memory foam reset layer 9 at the front end. The sound insulation cotton pressure-resistant layer 8 is provided with a layer of corresponding grooves adapted to the memory foam reset layer 9, and the silicone bonding layer 7 is provided with two layers of corresponding grooves adapted to the sound insulation cotton pressure-resistant layer 8. The sound insulation cotton pressure-resistant layer 8 is fixedly connected with a terminal column 10, and the memory foam reset layer 9 is connected to the terminal column 10 through a telescopic column 11. The silicone bonding layer 7 is pasted on the matching cover 1, and the terminal column 10 extends outward through the silicone bonding layer 7 and is connected to a terminal combination plate 12.

[0053] It is worth noting that the memory foam reset layer 9 at the front end extends into the ear canal when in use. The setting of the memory foam can ensure its reset effect. The silicone bonding layer 7 at the rear end will produce an adhesion effect with the ear canal, and the pressure generated will produce pressure on the sound insulation cotton anti-pressure layer 8, thereby ensuring the sound insulation effect of the sound insulation cotton anti-pressure layer 8 and the noise reduction effect of the multiple noise reduction earplugs.

[0054] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A combined hearing protection and noise reduction device, characterized in that: It comprises a noise reduction earmuff main body and a noise reduction earplug main body used in conjunction with the noise reduction earplug main body, the noise reduction earplug main body comprises a pair of matching covers (1), the two matching covers (1) are connected via a main frame, and the matching covers (1) are provided with multiple noise reduction earplug bodies; The noise reduction earmuff main body comprises an earmuff frame (2) and shielding earmuffs (3) arranged at both ends of the earmuff frame (2); the earmuff frame (2) is connected to the main frame via a snap-fit ​​assembly; an assembly docking piece connected to a multiple noise reduction earplug body is arranged inside the shielding earmuff (3); a soundproof cover body (4) is arranged on the shielding earmuff (3); a metal heat conducting sheet (5) is arranged at the center of the earmuff frame (2); the metal heat conducting sheet (5) is connected to the snap-fit ​​assembly docking piece via a delivery pipeline (6); and magnetic drive components for pushing the heat dissipation liquid in the delivery pipeline (6) to flow are arranged on both sides of the earmuff frame (2); The multi-noise reduction earplug body is composed of a silicone bonding layer (7) located at the rear end, a sound insulation cotton anti-pressure layer (8) located in the middle, and a memory cotton reset layer (9) located at the front end. The sound insulation cotton anti-pressure layer (8) is provided with a layer of corresponding grooves adapted to the memory cotton reset layer (9), and the silicone bonding layer (7) is provided with two layers of corresponding grooves adapted to the sound insulation cotton anti-pressure layer (8). The magnetic drive component includes a drop force opening (27) opened on the earmuff frame (2), a sliding column is provided on the inner wall of the drop force opening (27), the drop force opening (27) is connected to a magnetic block (28) via a sleeve spring sleeved on the sliding column, the delivery pipeline (6) is respectively distributed on both sides of the drop force opening (27), and a magnetic ring (29) magnetically attracted to the magnetic block (28) is provided inside the delivery pipeline (6) located on both sides of the drop force opening (27), and a one-way closed layer (30) is provided inside the magnetic ring (29).

2. A combined hearing protection and noise reduction device according to claim 1, characterized in that: The sound insulation cotton pressure-resistant layer (8) is fixedly connected to a terminal column (10), the memory cotton reset layer (9) is connected to the terminal column (10) via a telescopic column (11), the silicone adhesive layer (7) is adhesively arranged on the matching cover (1), and the terminal column (10) extends outward through the silicone adhesive layer (7) and is connected to a terminal combination plate (12).

3. The combined hearing protection and noise reduction device according to claim 1, characterized in that: The main frame includes a bracket and a bracket seat (13) connected to the matching cover (1), a connecting groove (14) is provided on the bracket seat (13), and the end of the bracket is located in the connecting groove (14) and is rotatably connected to the inner wall of the connecting groove (14) through a rotating shaft; A pressure support rod (15) is fixedly connected to the bracket seat (13), and the pressure support rod (15) is connected to the bracket side wall via a resisting spring.

4. The combined hearing protection and noise reduction device according to claim 1, characterized in that: The snap-fit ​​assembly comprises a plug-in rod (16) fixedly connected to the end of the pressure support rod (15); a buckle (17) is provided at the end of the plug-in rod (16); and a slot (18) adapted to the buckle (17) is provided on the inner side wall of the earmuff frame (2).

5. The combined hearing protection and noise reduction device according to claim 2, characterized in that: The assembly docking piece comprises a docking seat (19) fixedly arranged inside the shielding earmuff (3), and the docking seat (19) is provided with an end interface adapted to the terminal assembly plate (12).

6. The combined hearing protection and noise reduction device according to claim 1, characterized in that: A heat dissipation plate (20) is provided on the back of the sound insulation cotton pressure-resistant layer (8), and a heat dissipation channel is provided inside the heat dissipation plate (20), and both ends of the heat dissipation channel pass through the terminal column (10) and the side wall of the terminal combination plate (12), and are connected to the terminal tube (21), and the terminal combination plate (12) is fixedly connected to a resistance butt tube (22) inserted into the terminal tube (21), and the inner side wall of the terminal combination plate (12) is connected to a cross bar (23) through a spring resistance column (33), and both ends of the cross bar (23) respectively pass through the terminal tubes (21) on both sides, and are fixedly connected to a blocking ring (24) sleeved on the resistance butt tube (22), and a connecting port (25) is provided on the outer side wall of the resistance butt tube (22); The end pipe (21) is provided with a rectangular opening for the crossbar (23) to move, and the crossbar (23) is provided with an isolation piece to ensure the sealing of the rectangular opening.

7. The combined hearing protection and noise reduction device according to claim 1, characterized in that: A heat dissipation pipe is provided inside the metal heat conducting sheet (5), and both ends of the heat dissipation pipe are connected to the delivery pipe (6). The other end of the delivery pipe (6) passes through the earmuff frame (2) and extends into the docking seat (19). A fan-shaped closed layer (26) is provided inside the delivery pipe (6) located at the docking seat (19).

8. The combined hearing protection and noise reduction device according to claim 3, characterized in that: The soundproof cover (4) is provided with an assembly notch (31) for assembling the main frame, and the side wall of the bracket seat (13) is fixedly connected with an isolation compensation layer (32) adapted to the assembly notch (31).

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