Adjustable industrial noise isolation earmuff

Abstract

The utility model relates to the technical field of noise isolation earmuffs, and discloses an adjustable industrial noise isolation earmuff which comprises a safety helmet, the left side and the right side of the safety helmet are both connected with mounting plates through connecting mechanisms, the far sides of the two mounting plates are both fixedly connected with head hoops, the head hoops are connected with adjusting rods through adjusting mechanisms, and the adjusting rods are fixedly connected with the safety helmet. The bottom end of the adjusting rod is rotatably connected with a connecting frame, the bottom end of the connecting frame is provided with a shell, the connecting mechanism comprises a mounting rod, the interior of the mounting rod is slidably connected with an extrusion rod, the exterior of the extrusion rod is fixedly connected with a limiting disc, and the exterior of the extrusion rod is sleeved with a strong spring. Threaded blocks are rotationally connected to the sides, far away from each other, of the multiple extrusion rods. According to the safety helmet, the safety risk that the head of a worker is hit by a falling object due to the fact that the safety helmet is not stably worn or taken down is greatly reduced, and the overall safety of the working environment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of noise isolation earmuff, especially adjustable industrial noise isolation earmuff. BACKGROUND

[0002] In the field of industrial production and labor protection, noise protection has always been a crucial issue. With the continuous expansion of industrial scale and the extensive application of mechanical equipment, noise pollution in industrial environment is becoming more and more serious. Excessive noise not only causes irreversible damage to the hearing of workers, but also may cause tinnitus, insomnia, inattention and a series of physiological and psychological problems in long-term exposure, seriously affecting the work efficiency and life quality of workers. Early noise protection means is single, mostly using simple earplugs for ear protection. However, earplugs have many limitations in wearing comfort, stability and durability of noise reduction effect. With the continuous progress of industrial technology and the increasing attention to the health of workers, industrial noise isolation earmuff emerges as the times require.

[0003] Most of the isolation earmuffs are designed in one piece. The headband is worn on the head, and then the earmuff shell is put on the ear of the person. The side of the earmuff corresponding to the ear of the person is in contact with the ear through the sponge, providing comfort while reducing external noise transmission through the physical barrier of the earmuff shell and the sound absorption characteristics of the sponge to complete the isolation of noise.

[0004] In the prior art, part of the isolation earmuff is used in industrial site. The isolation earmuff is first worn on the head, and then the safety helmet is worn to ensure the safety during use in the construction site. In actual work process, especially in some scenes that require frequent bending, standing up and turning head, the earmuff will shift. The worker will temporarily take off the safety helmet to adjust the earmuff, or the wearing of the safety helmet will not be stable because of the existence of the earmuff. This will expose the worker's head to potential danger such as falling objects, increase the safety risk of head injury, and cause serious safety accidents. Therefore, in view of the above shortcomings, the adjustable industrial noise isolation earmuff is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and providing an adjustable industrial noise isolation earmuff, which aims to improve the problems of poor wearing stability, poor compatibility with safety helmet and easy displacement in frequent action scenes in the prior art, so as to expose the worker's head to danger.

[0006] To achieve the above object, the utility model provides the following technical scheme: adjustable industrial noise isolation earmuff, including safety cap, the left and right sides of safety cap are connected with mounting plate through connecting mechanism, the far side of two mounting plates is fixedly connected with head hoop, the head hoop is connected with adjusting rod through adjusting mechanism, the bottom of adjusting rod is rotatably connected with link frame, the bottom of link frame is provided with shell,

[0007] The connecting mechanism includes a mounting rod, a plurality of extrusion rods are rotatably connected with a plurality of threaded blocks on the far sides of the plurality of extrusion rods, two movable holes are formed in the outer sides of the proximal sides of the plurality of mounting rods, a clamping ball is movably connected in the movable hole, a limiting hole is formed in the outer side of the mounting rod, and a noise reduction assembly is arranged on the proximal side of the two shells.

[0008] Further, the adjusting mechanism includes a clamping rod, the head hoop is provided with a telescopic spring in the inside, and two fixed blocks are fixedly connected in the inside of the head hoop.

[0009] Further, the noise reduction assembly includes sound insulation cotton, the outer sides of the two sound insulation cottons are respectively arranged in the inside of the proximal sides of the two shells, and a sponge pad is fixedly connected to the proximal side of the two shells.

[0010] Further, the proximal sides of the two mounting plates are fixedly connected to the outside of the safety cap, and the outer side of the adjusting rod is movably connected to the inside of the bottom of the head hoop.

[0011] Further, the outer side of the threaded block is screw-connected to the inside of one side of the mounting rod, and the outer side of the mounting rod is fixedly connected to the inside of the mounting plate.

[0012] Further, one end of the strong spring is fixedly connected to the inside of one side of the limiting hole, the other end of the strong spring is fixedly connected to one side of the limiting disc, and the outer side of the limiting disc is movably connected to the inside of the limiting hole.

[0013] Further, the side of the extrusion rod, which is provided with an arc, is in contact with the outer side of the clamping ball, and the far sides of the plurality of threaded blocks are fixedly connected with twisting blocks.

[0014] Further, one side of the clamping rod is clamped with the inside of the adjusting hole, and the top outer side of the adjusting rod is movably connected to the inside of the fixed block.

[0015] The utility model has the following beneficial effects:

[0016] 1. In this utility model, when using earmuffs in an industrial setting, the mounting rod on the mounting plate is inserted into the safety helmet, and then the screwing block is turned so that the threaded block drives the pressing rod to press the locking ball, thus completing the installation of the safety helmet and earmuffs. This reduces the need for workers to remove the safety helmet to adjust the earmuffs, ensures that the safety helmet is always in a stable wearing state, greatly reduces the safety risk of workers' heads being hit by falling objects due to unstable wearing or removal of the safety helmet, and improves the overall safety of the working environment.

[0017] 2. In this utility model, the locking rod is slidable by pulling or pushing the adjusting rod, and then the locking rod can be freely slid and adjusted in multiple adjusting holes. The spring force is provided by the telescopic spring and the spring steel material of the locking rod, so that the locking rod can be more balanced in the adjusting holes, which greatly increases the adaptability of the earmuff to different head shapes and head circumferences, and improves the versatility of the earmuff. Attached Figure Description

[0018] Figure 1 This is a perspective view of the adjustable industrial noise isolation earmuffs proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the sponge pad structure of the adjustable industrial noise isolation earmuffs proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the headband structure of the adjustable industrial noise isolation earmuffs proposed in this utility model.

[0021] Figure 4 for Figure 2 Enlarged view of point A in the image;

[0022] Figure 5 for Figure 3 Enlarged view of point B in the image.

[0023] Legend:

[0024] 1. Safety helmet; 2. Mounting plate; 3. Headband; 4. Adjusting rod; 5. Connecting bracket; 6. Outer shell; 7. Sound insulation cotton; 8. Sponge pad; 9. Mounting rod; 10. Pressing rod; 11. Limiting plate; 12. Strong spring; 13. Threaded block; 14. Tightening block; 15. Movable hole; 16. Engaging ball; 17. Limiting hole; 18. Engaging rod; 19. Telescopic spring; 20. Fixing block; 21. Adjusting hole. Detailed Implementation

[0025] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0026] With reference to Figure 1 , Figure 2 and Figure 4 , the present application provides an embodiment: adjustable industrial noise isolation earmuff, including safety helmet 1, safety helmet 1 as the basis component of head protection, provides reliable head covering and protection function for the whole device, safety helmet 1 left and right sides are connected with mounting plate 2 through connecting mechanism. The far side of the two mounting plates 2 is fixedly connected with headband 3, the shape of headband 3 is matched with the contour of human head, can surround the head to a certain extent, headband 3 is connected with adjusting rod 4 through adjusting mechanism, adjusting rod 4 can be flexibly slid in the bottom end of headband 3, the bottom end of adjusting rod 4 is rotatably connected with connecting frame 5, and connecting frame 5 plays the role of transition connection.

[0027] Connecting frame 5 bottom end is provided with shell 6, connecting adjusting rod 4 and shell 6, shell 6 not only provides protection and containing space for internal noise reduction assembly. The proximal side of the two shells 6 is provided with a noise reduction assembly, the noise reduction assembly includes soundproof cotton 7, the soundproof cotton 7 is arranged in the proximal side of the two shells 6 with its unique material structure and sound absorption characteristics, can effectively block and absorb external industrial noise, reduce the amount of noise into the ear, the proximal side of the two shells 6 is fixedly connected with sponge pad 8, the sponge pad 8 is soft, and is attached around the ear, can further buffer the impact of external noise on the ear, and can improve the comfort of the user when wearing the earmuff, reduce the compression feeling of the ear.

[0028] The connecting mechanism comprises a mounting rod 9, the outer part of which is fixedly connected to the inner part of the mounting plate 2, and the inner part of the mounting rod 9 is in sliding connection with the extrusion rod 10, the mounting rod 9 provides a track and a guide for the movement of the extrusion rod 10, the outer part of the extrusion rod 10 is fixedly connected to a limiting disc 11, the size of the limiting disc 11 matches the limiting hole 17 provided on the outer part of the mounting rod 9, a strong spring 12 is sleeved on the outer part of the extrusion rod 10, the strong spring 12 is in a natural state when not under stress, a threaded block 13 is rotatably connected to the far side of the extrusion rod 10, the external thread structure of the threaded block 13 is in precise cooperation with the thread structure on the inner part of one side of the mounting rod 9, a screwing block 14 is fixedly connected to the far side of the threaded block 13, the screwing block 14 is convenient for the user to operate, the external thread structure of the threaded block 13 is fixedly connected to the inner part of one side of the mounting rod 9, two movable holes 15 are provided on the outer part of the near side of the mounting rod 9, a clamping ball 16 is movably connected to the inner part of the movable hole 15, the clamping ball 16 is partially protruded from the movable hole 15 after being extruded, the side of the extrusion rod 10 provided with the arc is in contact with the outer part of the clamping ball 16, the limiting hole 17 is provided on the outer part of the mounting rod 9, one end of the strong spring 12 is fixedly connected to the inner part of one side of the limiting hole 17, and the other end is fixedly connected to one side of the limiting disc 11, and the outer part of the limiting disc 11 is in sliding connection with the inner part of the limiting hole 17.

[0029] With reference to Figure 1 , Figure 3 and Figure 5 , the adjusting mechanism comprises a clamping rod 18, which is made of spring steel and is triangular, and the shape and material characteristics of the clamping rod 18 enable it to stably clamp and slide during the adjustment process, the inner part of the head hoop 3 is provided with a telescopic spring 19, which can provide corresponding elastic force assistance according to the movement state of the clamping rod 18, the inner part of the head hoop 3 is fixedly connected with two fixed blocks 20, which provide a precise sliding track and positioning for the top end of the adjusting rod 4, the outer part of the top end of the adjusting rod 4 is in sliding connection with the inner part of the fixed block 20, and the near side of every two fixed blocks 20 is provided with an adjusting hole 21, one side of the clamping rod 18 is clamped with the inner part of the adjusting hole 21, and through the design of this adjusting mechanism, the earmuffs can be conveniently and flexibly adjusted according to the head shape and head circumference of different users, and the versatility and wearing comfort of the earmuffs are improved.

[0030] Working principle: first, the installation rod 9 on the mounting plate 2 is inserted into the mounting position of the safety helmet 1. Then, turn the screw block 14, the screw block 14 drives the threaded block 13 fixedly connected with it to rotate. Because the threaded block 13 is externally threaded connected on one side of the installation rod 9, the rotation of the threaded block 13 will make it produce axial displacement in the installation rod 9. The threaded block 13 drives the extrusion rod 10 rotationally connected with it to slide in the installation rod 9. When the extrusion rod 10 slides, the arc-shaped side thereof extrudes the clamping ball 16 in the movable hole 15, so that the clamping ball 16 is clamped into the corresponding clamping groove structure in the safety helmet 1, thereby stably connecting the mounting plate 2 on the safety helmet 1, and completing the installation of the earmuffs and the safety helmet. In the sliding process of the extrusion rod 10, the limiting disc 11 fixedly connected outside the extrusion rod 10 slides in the limiting hole 17 of the installation rod 9, and extrudes the strong spring 12 sleeved outside the extrusion rod 10, so that the strong spring 12 is deformed and stores elastic potential energy, preparing for subsequent disassembly. In the use process, the sound insulation cotton 7 inside the two housings 6 close to one side effectively blocks industrial noise, reducing the transmission of noise into the ear. At the same time, the sponge pad 8 fixedly connected on the same side of the housing 6 can not only further buffer external noise, but also improve the comfort of the user when wearing the earmuffs.

[0031] When it is necessary to adjust the position of the earmuffs to adapt to different head shapes and head circumferences, pull or push the adjusting rod 4, and the adjusting rod 4 slides in the bottom end of the headband 3. The top end of the adjusting rod 4 slides in the fixed block 20 fixedly connected inside the headband 3, and this sliding process drives the clamping rod 18 to move. The clamping rod 18 slides in the adjusting hole 21 close to one side of the fixed block 20, and the extension spring 19 arranged inside the headband 3 provides auxiliary spring force to the clamping rod 18, so that the clamping rod 18 can be stably clamped and slid in the adjusting hole 21. By changing the position of the clamping rod 18 in different adjusting holes 21, the relative position of the headband 3 and the adjusting rod 4 is adjusted, thereby increasing the adaptability of the earmuffs to different head shapes and head circumferences.

[0032] Finally, it should be pointed out that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. Adjustable industrial noise isolation earmuffs, including a safety helmet (1), characterized in that: The safety helmet (1) has mounting plates (2) connected to both sides of the helmet via a connecting mechanism. Headbands (3) are fixedly connected to the opposite sides of the two mounting plates (2). The headbands (3) are connected to adjusting rods (4) via adjusting mechanisms. A connecting frame (5) is rotatably connected to the bottom of the adjusting rods (4). A shell (6) is provided at the bottom of the connecting frame (5). The connecting mechanism includes a mounting rod (9), an extrusion rod (10) is slidably connected inside the mounting rod (9), a limiting plate (11) is fixedly connected to the outside of the extrusion rod (10), a strong spring (12) is sleeved on the outside of the extrusion rod (10), a threaded block (13) is rotatably connected to the far side of the plurality of extrusion rods (10), two movable holes (15) are opened on the outside of the near side of the plurality of mounting rods (9), a locking ball (16) is movably connected inside the movable hole (15), a limiting hole (17) is opened on the outside of the mounting rod (9), and a noise reduction component is provided on the near side of the two housings (6).

2. The adjustable industrial noise isolation earmuffs according to claim 1, characterized in that: The adjustment mechanism includes a locking rod (18), and a telescopic spring (19) is provided inside the headband (3). Two fixing blocks (20) are fixedly connected inside the headband (3), and an adjustment hole (21) is provided on the adjacent side of each pair of fixing blocks (20).

3. The adjustable industrial noise isolation earmuffs according to claim 1, characterized in that: The noise reduction component includes sound insulation cotton (7), and the exterior of the two sound insulation cotton (7) is respectively disposed inside the two shells (6) on the adjacent side. The two shells (6) are fixedly connected with sponge pads (8) on the adjacent side.

4. The adjustable industrial noise isolation earmuffs according to claim 1, characterized in that: The two mounting plates (2) are fixedly connected to the outside of the safety helmet (1) on their adjacent sides, and the outside of the adjusting rod (4) is slidably connected to the inside of the bottom end of the headband (3).

5. The adjustable industrial noise isolation earmuffs according to claim 1, characterized in that: The external thread of the threaded block (13) is connected to the inside of one side of the mounting rod (9), and the external of the mounting rod (9) is fixedly connected to the inside of the mounting plate (2).

6. The adjustable industrial noise isolation earmuffs according to claim 1, characterized in that: One end of the strong spring (12) is fixedly connected to the inside side of the limiting hole (17), and the other end of the strong spring (12) is fixedly connected to the side of the limiting plate (11). The outside of the limiting plate (11) is slidably connected to the inside of the limiting hole (17).

7. The adjustable industrial noise isolation earmuffs according to claim 1, characterized in that: The extrusion rod (10) has an arc-shaped side that contacts the outside of the locking ball (16), and a screwing block (14) is fixedly connected to the opposite side of each of the multiple threaded blocks (13).

8. The adjustable industrial noise isolation earmuffs according to claim 2, characterized in that: One side of the locking rod (18) engages with the inside of the adjusting hole (21), and the top of the adjusting rod (4) is slidably connected to the inside of the fixing block (20).

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