A noise reduction door capable of closing a door gap

Abstract

The utility model relates to noise reduction sound insulation door technical field, concretely is a kind of noise reduction sound insulation door of door gap can be closed, it includes wooden door, and door handle and rotating handle are installed on wooden door, rotating handle is located below door handle, the inside of wooden door is provided with mounting groove, fixed pulley I, fixed pulley II, steel wire rope, gear, vertical rack are installed in mounting groove;Fixed pulley I and fixed pulley II are fixed in the inner wall of mounting groove, and fixed pulley I and fixed pulley II are located on same horizontal line, gear and vertical rack are engaged, and gear is fixed on the main shaft of rotating handle, the lower end of vertical rack is fixed with extension vertical rod, steel wire rope is fixed in the lower end of extension vertical rod, the middle section of steel wire rope is S-shaped and is sequentially arranged on fixed pulley II and fixed pulley I, the lower end of steel wire rope is fixed with noise reduction sound insulation mechanism;Solve the existing wooden door and the gap between ground due to the existence of sound insulation performance difference, and the problem that foamed strip etc. sound insulation material is easy to wear, fall off and affect the appearance.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction and sound insulation door technology, specifically a noise reduction and sound insulation door that can seal door gaps. Background Technology

[0002] During construction, a 5mm to 10mm gap is usually left between the bottom of the door and the ground to facilitate the installation of wooden doors. While this simplifies the installation process, it significantly impacts the room's sound insulation performance, especially in office spaces where privacy and quiet environments are paramount.

[0003] The common solution is to insert sound-absorbing materials such as foam strips into the door gaps to improve sound insulation. However, these materials are often forcibly embedded, and with long-term use, frequent opening and closing of the door can cause friction, leading to material falling off or breaking. This not only reduces sound insulation performance but also affects the overall aesthetics.

[0004] Therefore, it is necessary to invent a noise-reducing and soundproof door that can seal the gaps between doors to solve the above problems. Utility Model Content

[0005] To address the problems of poor sound insulation performance caused by gaps between existing wooden doors and the ground, as well as the easy wear and tear and detachment of sound insulation materials such as foam strips, which affect aesthetics, this utility model provides a noise-reducing and soundproof door that can seal the door gaps.

[0006] This utility model is achieved using the following technical solution: A noise-reducing and soundproof door that can seal door gaps includes a wooden door with a door handle and a rotating handle installed on it. The rotating handle is located below the door handle. An installation groove is provided inside the wooden door, and a fixed pulley I, a fixed pulley II, a steel wire rope, a gear, and a vertical rack are installed in the installation groove. The fixed pulley I and fixed pulley II are fixed to the inner wall of the installation groove and are located on the same horizontal line. The gear and the vertical rack mesh with each other, and the gear is fixed to the main shaft of the rotating handle. An extension rod is fixed to the lower end of the vertical rack, and the steel wire rope is fixed to the lower end of the extension rod. The middle section of the steel wire rope is wound in an S-shape around the fixed pulley II and fixed pulley I. A noise-reducing and soundproofing mechanism is fixed to the lower end of the steel wire rope. The noise reduction and sound insulation mechanism includes a main crossbar. A groove is provided at the lower end of the main crossbar, and a sound insulation plate is installed in the groove. Several bolt holes are provided along the length of the groove on its side wall. Each bolt hole is threaded with a bolt, and the tail end of each bolt abuts against the side wall of the sound insulation plate. Several connecting vertical rods are fixed at the top of the main crossbar along its length. A connecting crossbar is fixed together at the middle of the front surface of the several connecting vertical rods. A slider I is fixed at the upper part of the front surface of each connecting vertical rod. Vertical guide rails I are fixed on the inner wall of the mounting groove, corresponding to and matching the several sliders I. Each slider I is engaged and slidably connected with the corresponding vertical guide rail I. The top of the connecting vertical rod located in the middle of the main crossbar is fixedly connected to the lower end of the wire rope.

[0007] Furthermore, limit plates are provided at the upper and lower ends of each vertical guide rail I.

[0008] Furthermore, the main crossbar and sound insulation panel are the same width as the wooden door.

[0009] Furthermore, the main crossbar is made of stainless steel.

[0010] Furthermore, the sound insulation panel is made of rubber and plastic insulation cotton with a fire resistance rating of B1.

[0011] Furthermore, a vertical guide rail II is fixed inside the mounting groove, and a slider II is slidably connected inside the vertical guide rail II, with the slider II fixed to the outer surface of the extension vertical rod.

[0012] This utility model features a reasonable and reliable structural design. By incorporating a height-adjustable noise reduction and sound insulation mechanism, it effectively solves the problems of poor sound insulation performance caused by gaps at the bottom of wooden doors and the easy detachment of traditional filling materials. The user rotates a handle to drive a gear and rack transmission, which, through a steel wire rope and pulley system, controls the raising and lowering of the sound insulation panel, achieving automatic closing and opening of the door gap. Simultaneously, the sound insulation panel uses B1-grade rubber and plastic insulation cotton, possessing excellent fire resistance and sound insulation properties. Combined with a full-width design, it ensures a complete seal at the bottom of the door, significantly improving sound insulation, especially for suppressing low-frequency noise. Furthermore, this device avoids the forced embedding of materials such as foam strips, eliminating the risk of wear and tear and detachment caused by door opening and closing, maintaining the door's aesthetic appeal and cleanliness. It is also simple to operate and maintain, achieving a balance between durability, safety, and efficient sound insulation in door gap sealing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the noise reduction and sound insulation mechanism in this utility model.

[0015] Figure 3 This is a schematic diagram of slider I in this utility model.

[0016] Figure 4 This is a schematic diagram of the vertical guide rail I and the limiting plate in this utility model.

[0017] Figure 5 It is along Figure 4 Sectional view along line 1-1.

[0018] In the diagram: 1. Wooden door; 2. Fixed pulley I; 3. Fixed pulley II; 4. Steel wire rope; 5. Gear; 6. Vertical rack; 7. Extension vertical rod; 8. Main horizontal rod; 9. Sound insulation board; 10. Bolt; 11. Connecting vertical rod; 12. Connecting horizontal rod; 13. Sliding block I; 14. Vertical guide rail I; 15. Limiting plate. Detailed Implementation

[0019] A noise-reducing and soundproof door that can seal door gaps, including a wooden door 1, as shown in the attached document. Figure 1 ~Appendix Figure 5 As shown, a door handle and a rotating handle are installed on the wooden door 1. The rotating handle is located below the door handle. An installation groove is opened inside the wooden door 1. A fixed pulley I2, a fixed pulley II3, a steel wire rope 4, a gear 5, and a vertical rack 6 are installed in the installation groove. The fixed pulley I2 and fixed pulley II3 are fixed to the inner wall of the installation groove and are located on the same horizontal line. The gear 5 and the vertical rack 6 mesh with each other and the gear 5 is fixed to the main shaft of the rotating handle. An extension rod 7 is fixed to the lower end of the vertical rack 6. The steel wire rope 4 is fixed to the lower end of the extension rod 7. The middle section of the steel wire rope 4 is wound in an S-shape around the fixed pulley II3 and fixed pulley I2. A noise reduction and sound insulation mechanism is fixed to the lower end of the steel wire rope 4. The noise reduction and sound insulation mechanism includes a main crossbar 8. A groove is provided at the lower end of the main crossbar 8, and a sound insulation plate 9 is installed in the groove. Several bolt holes are provided along the length of the groove on its side wall. Each bolt hole is threaded with a bolt 10, and the tail end of each bolt 10 abuts against the side wall of the sound insulation plate 9. Several connecting vertical bars 11 are fixed at the top of the main crossbar 8 along its length. A connecting crossbar 12 is fixed together at the middle of the front surface of the several connecting vertical bars 11. A slider I 13 is fixed at the upper part of the front surface of each connecting vertical bar 11. Vertical guide rails I 14 are fixed on the inner wall of the mounting groove, corresponding to and matching the several sliders I 13. Each slider I 13 is engaged and slidably connected with the corresponding vertical guide rail I 14. The top of the connecting vertical bar 11 located in the middle of the main crossbar 8 is fixedly connected to the lower end of the wire rope 4.

[0020] In this invention, the rotary handle and gear 5 serve as the user's input terminals. Together with the vertical rack 6 and the extension rod 7, they convert rotational motion into linear motion. The steel wire rope 4 connects the extension rod 7 to the noise reduction and sound insulation mechanism. Fixed pulleys I2 and II3 guide the steel wire rope 4 to change direction, forming an S-shaped winding path to achieve force transmission and direction conversion. The noise reduction and sound insulation mechanism, composed of the main crossbar 8, sound insulation plate 9, bolts 10, connecting rod 11, connecting crossbar 12, and slider I13, achieves the purpose of directly sealing the door gap. The main crossbar 8 provides structural rigidity, ensuring the sound insulation plate 9 rises and falls smoothly, preventing deformation or shaking, and connecting all the connecting components. The vertical rod 11 and the sound insulation plate 9 are used to seal the gap between the bottom of the wooden door 1 and the ground to achieve physical sound insulation and significantly improve the sound insulation performance of the wooden door 1. The effect is particularly noticeable on low-frequency noise, such as human voices and equipment noise. Multiple connecting vertical rods 11 jointly support the main horizontal rod 8 and enhance the overall rigidity through connecting horizontal rods 12, thereby improving the structural stability and preventing the main horizontal rod 8 from bending or tilting due to single-point force. The slider I 13 engages and slides with the vertical guide rail I 14 fixed to the inner wall of the mounting groove to form a guiding structure, which can limit the noise reduction and sound insulation mechanism to only make vertical movements, prevent swaying or jamming, and ensure smooth lifting and accurate positioning.

[0021] Each vertical guide rail I14 is equipped with a limit plate 15 at both the upper and lower ends.

[0022] The limit plate 15 serves to limit the stroke range of slider I 13, preventing slider I 13 from rising or falling excessively, which could cause structural damage or derailment, thus ensuring operational safety and extending its service life.

[0023] The main crossbar 8 and the sound insulation board 9 are both the same width as the wooden door 1.

[0024] This structural design ensures that the sound insulation panel 9 completely covers the entire length of the gap at the bottom of the door, achieving a full-width seal, eliminating sound leakage at the edges, and maximizing the sound insulation effect, especially suitable for wide doors.

[0025] The main crossbar 8 is made of stainless steel.

[0026] The sound insulation panel 9 is made of rubber and plastic insulation cotton with a fire resistance rating of B1.

[0027] The bolt 10 is a wing bolt.

[0028] The wing bolts are adjustable by hand, making it easy to replace or maintain the sound insulation panel.

[0029] A vertical guide rail II is fixed inside the mounting groove, and a slider II is slidably connected inside the vertical guide rail II. The slider II is fixed to the outer surface of the extension vertical rod 7.

[0030] The structural design of the vertical guide rail II and the slider II provides vertical guidance for the extended vertical rod 7, eliminates the risk of vertical rack 6 swinging, ensures meshing accuracy, and at the same time shares the lateral force of the wire rope 4.

[0031] When door gap sealing is required, the user rotates the handle counterclockwise, causing gear 5 to rotate counterclockwise and drive the vertical rack 6 meshing with it to move downward. The vertical rack 6 drives the extension rod 7 to move downward in sync. The upper end of the wire rope 4 releases tension, and the noise reduction and sound insulation mechanism slides down along the vertical guide rail I14 under its own gravity. The sound insulation panel 9 gradually descends until it is close to the ground, completing the door gap sealing.

[0032] When it is necessary to release the door seal, the user rotates the handle clockwise, causing gear 5 to rotate clockwise and drive the vertical rack 6 meshing with it to move upward. The vertical rack 6 drives the extension rod 7 to move upward in sync. The steel wire rope 4 fixed to the lower end of the extension rod 7 is also pulled upward. The steel wire rope 4 pulls the main crossbar 8 upward through fixed pulleys II3 and I2, thereby driving the entire noise reduction and sound insulation mechanism to slide upward along the vertical guide rail I14. The sound insulation panel 9 then rises to the bottom edge of the door, lifts off the ground, and completes the release of the door seal.

[0033] In the specific implementation process, a ratchet self-locking mechanism is installed on the rotary handle. The ratchet self-locking mechanism includes a ratchet fixed on the main shaft of the rotary handle, a bracket fixed on the inner wall of the mounting groove, a pawl hinged on the bracket, the tip of the pawl meshing with the tooth groove of the ratchet, a tension spring connected between the pawl and the bracket, the tension of the tension spring forcing the pawl to press against the ratchet tooth surface, the pawl extending to provide an unlocking arm, the unlocking arm being connected to the unlocking button penetrating the door body, and the unlocking button and the unlocking arm being connected by a connecting rod.

[0034] During the process of releasing the door seal, the sound insulation panel 9 gradually lifts off the ground and rises to the bottom edge of the door. When the noise reduction and sound insulation mechanism rises to the limit plate 15 at the upper end of the vertical guide rail I14, the user releases the rotating handle. The pawl, under the action of the spring, always sticks to the ratchet, automatically preventing the rotating handle from turning counterclockwise. The sound insulation panel 9 remains in the raised position and will not fall due to vibration or gravity.

[0035] When it is necessary to seal the door gap, simply press the unlock button, the linkage pushes the unlock arm to rotate, forcing the pawl to disengage from the ratchet teeth. Then slowly rotate the handle counterclockwise to control the descent speed, so that the soundproof panel 9 gradually descends until it is close to the ground. Stop rotating the handle and release the unlock button. At this time, the pawl automatically locks the main shaft, fixing the soundproof panel 9 at that height.

[0036] In the specific implementation process, the main crossbar 8 has a height of 30mm and a thickness of 20mm; the connecting vertical bar 11 has a height of 50mm, a width of 30mm, and a thickness of 20mm; the bolt hole has a diameter of 6mm; the gear 5 is a spur gear with a module of 2mm, 20 teeth, a pressure angle of 20°, a tooth width of 20mm, an inner diameter of 21.5mm, and an outer diameter of 50mm; the vertical rack 6 is a single rack with a module of 2mm, a pressure angle of 20°, and a tooth width of 20mm; the fixed pulleys I2 and II3 are both 500mm above the ground.

[0037] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A noise-reducing and soundproof door that can seal door gaps, comprising a wooden door (1), characterized in that: The wooden door (1) is equipped with a door handle and a rotating handle. The rotating handle is located below the door handle. The interior of the wooden door (1) is provided with an installation groove. The installation groove is equipped with a fixed pulley I (2), a fixed pulley II (3), a steel wire rope (4), a gear (5), and a vertical rack (6). The fixed pulley I (2) and the fixed pulley II (3) are fixed to the inner wall of the installation groove, and the fixed pulley I (2) and the fixed pulley II (3) are located on the same horizontal line. The gear (5) and the vertical rack (6) mesh with each other, and the gear (5) is fixed to the main shaft of the rotating handle. The lower end of the vertical rack (6) is fixed with an extension rod (7). The steel wire rope (4) is fixed to the lower end of the extension rod (7). The middle section of the steel wire rope (4) is wound in an S-shape around the fixed pulley II (3) and the fixed pulley I (2). The lower end of the steel wire rope (4) is fixed with a noise reduction and sound insulation mechanism. The noise reduction and sound insulation mechanism includes a main crossbar (8), a groove is provided at the lower end of the main crossbar (8), a sound insulation plate (9) is installed in the groove, a number of bolt holes are provided on the side wall of the groove along its length, a bolt (10) is threaded in each bolt hole, and the tail end of each bolt (10) abuts against the side wall of the sound insulation plate (9), a number of connecting vertical rods (11) are fixed at the top of the main crossbar (8) along its length, a connecting crossbar (12) is fixed together in the middle of the front surface of the number of connecting vertical rods (11), a slider I (13) is fixed at the upper part of the front surface of each connecting vertical rod (11), a vertical guide rail I (14) is fixed on the inner wall of the mounting groove, which corresponds to and is compatible with the number of sliders I (13), and each slider I (13) is engaged and slidably connected with the corresponding vertical guide rail I (14), and the top of the connecting vertical rod (11) located in the middle of the main crossbar (8) is fixedly connected to the lower end of the wire rope (4).

2. The noise-reducing and soundproof door with sealable gaps according to claim 1, characterized in that: Limiting plates (15) are provided at the upper and lower ends of each vertical guide rail I (14).

3. A noise-reducing and soundproof door with a sealable gap as described in claim 1, characterized in that: The main crossbar (8) and the sound insulation board (9) are the same width as the wooden door (1).

4. A noise-reducing and soundproof door capable of sealing door gaps according to claim 1, characterized in that: The main crossbar (8) is made of stainless steel.

5. A noise-reducing and soundproof door capable of sealing door gaps according to claim 1, characterized in that: The sound insulation board (9) is made of rubber and plastic insulation cotton with a fire resistance rating of B1.

6. A noise-reducing and soundproof door capable of sealing door gaps according to claim 1, characterized in that: The bolt (10) is a wing bolt.

7. A noise-reducing and soundproof door capable of sealing door gaps according to claim 1, characterized in that: A vertical guide rail II is fixed inside the mounting groove, and a slider II is slidably connected inside the vertical guide rail II. The slider II is fixed to the outer surface of the extension vertical rod (7).

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