Silencing door frame of shielding door

Abstract

The utility model discloses a silencing door frame of a shielding door, which relates to the technical field of shielding doors and comprises a door frame, two hinge assemblies and a shielding door, the two hinge assemblies are symmetrically distributed on the front side of the door frame, and the shielding door is hinged to the front side of the door frame through the hinge assemblies; according to the noise elimination door frame of the shielding door, the bearing block can rotate in the mounting cavity, meanwhile, a bearing structure arranged at the bottom of the bearing block supports the whole mounting groove through the second fixing groove, the hinge rotating wing is supported, and therefore the noise elimination effect of the noise elimination door frame of the shielding door is improved. According to the platform screen door, the whole platform screen door is subjected to load bearing, so that when the platform screen door rotates, the hinge rotating wing does not directly apply pressure to the hinge fixing wing, the interaction force between the hinge rotating wing and the hinge fixing wing is reduced, and the noise generated when the platform screen door drives the hinge rotating wing to rotate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of screen doors, in particular to a sound-absorbing door frame for a screen door. Background Technique

[0002] A screen door is a device that isolates the interior of a building from the external environment. It can prevent people and objects from entering a fire scene, and at the same time facilitate firefighters to enter the building for fire extinguishing and rescue work.

[0003] For example, a steel fireproof screen door with a sound insulation effect with the publication number of CN219365878U includes a door body and a sound insulation board. A sound insulation groove is opened in the inner groove on one side of the door body. The sound insulation board is adapted to the sound insulation groove and is connected by plugging. Sound absorption holes are opened on both side walls of the sound insulation board. A sound absorption groove is opened in the inner groove between the two sound absorption holes near the two sides of the sound insulation board. The sound absorption groove is communicated with the sound absorption holes. Sound absorption bumps are adhesively connected to the inner wall of the sound absorption groove. Two mounting strips are fixedly connected to the outer walls on the upper and lower sides of the sound insulation board. Mounting grooves are opened in the inner groove walls on the upper and lower sides of the door body close to the sound insulation groove. The mounting strips are slidably and pluggably connected to the mounting grooves. The utility model has the following advantages: by opening sound absorption holes on the surface of the sound absorption plate structure and arranging a sound absorption inner groove inside, through the process of energy consumption during the propagation of sound, the sound wave is reflected and consumed by the sound absorption bumps in the sound absorption groove, thereby improving the sound insulation and sound absorption effect and enhancing the sound insulation effect of the fireproof screen door.

[0004] In the above technical solution of a steel fireproof screen door with a sound insulation effect, generally, by optimizing the structure of the screen door, the effect of improving sound insulation and sound absorption is achieved. In the prior art, due to the large weight of the screen door itself, during the rotation of the screen door, a large amount of noise will be generated during the rotation between the screen door and the hinge. Summary of the Invention

[0005] The purpose of the utility model is to provide a sound-absorbing door frame for a screen door to solve the problem in the above background technique that due to the large weight of the screen door itself, a large amount of noise will be generated during the rotation between the screen door and the hinge during the rotation of the screen door.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a sound-absorbing door frame for a screen door, including a door frame, a hinge assembly, and a screen door. There are two hinge assemblies, and the two hinge assemblies are symmetrically distributed on the front side of the door frame. The screen door is hinged to the front side of the door frame through the hinge assembly;

[0007] The hinge assembly includes a hinge fixed wing, and a hinge rotating wing is rotatably connected inside the hinge fixed wing. Support bars are rotatably connected to both the top and bottom of the hinge fixed wing, and a support rod is fixedly connected between the ends of the support bars. Two vertically distributed load-bearing blocks are fixedly connected to the outside of the support rod, and a first fixing groove is provided at the top of the load-bearing block. A plurality of ball bearings are rotatably connected inside the first fixing groove and are evenly distributed in a ring shape, and a fixing sleeve is fixedly connected to the outside of the plurality of ball bearings evenly distributed in a ring shape;

[0008] Preferably, two installation cavities are provided inside the hinge rotating wing, and the two installation cavities are rotatably connected to the load-bearing blocks. A second fixing groove is provided at the top of the inner side of the installation cavity, and the top of the ball bearings evenly distributed in a ring shape is rotatably connected to the second fixing groove. A bearing structure is formed between the second fixing groove, the first fixing groove, the ball bearings, and the fixing sleeve.

[0009] Preferably, the hinge fixed wing is fixedly connected to one side of the door frame, and the hinge rotating wing is fixedly connected to one side of the shielding door.

[0010] Preferably, an installation plate is slidably connected to the outside of the door frame in a confused manner, and a plurality of installation grooves are provided at equal intervals on the front side of the door frame, and a buffer strip is slidably connected inside the installation grooves.

[0011] Preferably, a support frame is slidably connected inside the door frame, and two symmetrically distributed positioning slide rods are fixedly connected to the rear side of the buffer strip, and the positioning slide rods are slidably connected inside the support frame.

[0012] Preferably, a spring is provided on the outside of the positioning slide rod, and the two ends of the spring are fixedly connected between the buffer strip and the support frame respectively.

[0013] Preferably, a sound insulation cotton is fixedly connected inside the door frame, and the sound insulation cotton is located outside the support frame.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] For the sound-absorbing door frame of the shielding door, the load-bearing block will rotate inside the installation cavity. At the same time, the bearing structure provided at the bottom of the load-bearing block supports the entire installation cavity through the second fixing groove. By supporting the hinge rotating wing, the entire shielding door is supported, so that when the shielding door rotates, the hinge rotating wing does not directly press on the hinge fixed wing, reducing the mutual acting force between the hinge rotating wing and the hinge fixed wing, thereby reducing the noise when the shielding door drives the hinge rotating wing to rotate;

[0016] Furthermore, when the shielding door is closed, the inner side of the shielding door will come into contact with the door frame. Before contacting the door frame, the shielding door will first come into contact with the buffer strip, causing the shielding door to drive the buffer strip to slide towards the inside of the door frame. At this time, the buffer strip will compress the spring;

[0017] Furthermore, the impact of the shielding door on the buffer strip is absorbed through the deformation of the spring, thereby achieving the effect of muffling the shielding door. At the same time, the buffer strip will drive the positioning slide bar to slide inside the support frame, and the sound-absorbing cotton is provided to absorb the noise inside the door frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic three-dimensional structure diagram of the present utility model;

[0019] Figure 2 is a schematic rear-side structure diagram of the present utility model;

[0020] Figure 3 is a schematic structure diagram of the hinge assembly of the present utility model;

[0021] Figure 4 is a schematic cross-sectional structure diagram of the hinge fixed wing of the present utility model;

[0022] Figure 5 is a schematic cross-sectional structure diagram of the hinge rotating wing of the present utility model;

[0023] Figure 6 is a schematic structure diagram of the second fixing groove of the present utility model;

[0024] Figure 7 is a schematic exploded structure diagram of the present utility model;

[0025] Figure 8 is a schematic cross-sectional structure diagram of the door frame of the present utility model.

[0026] In the figure: 1, door frame; 2, hinge assembly; 3, shielding door; 4, hinge fixed wing; 5, hinge rotating wing; 6, support strip; 7, support rod; 8, load-bearing block; 9, first fixing groove; 10, ball; 11, fixing sleeve; 12, installation cavity; 13, second fixing groove; 14, mounting plate; 15, installation groove; 16, buffer strip; 17, positioning slide bar; 18, spring; 19, support frame; 20, sound-absorbing cotton. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] In a further preferred embodiment of the present utility model, as Figure 1 - Figure 6As shown in the figure, a noise - reducing door frame of a screen door includes a door frame 1, a hinge assembly 2, and a screen door 3. There are two hinge assemblies 2, and the two hinge assemblies 2 are symmetrically distributed on the front side of the door frame 1. The screen door 3 is hinged to the front side of the door frame 1 through the hinge assembly 2;

[0029] The hinge assembly 2 includes a hinge fixed wing 4, and a hinge rotating wing 5 is rotatably connected inside the hinge fixed wing 4. Support bars 6 are rotatably connected to both the top and bottom of the hinge fixed wing 4, and a support rod 7 is fixedly connected between the ends of the support bars 6. Two vertically - distributed load - bearing blocks 8 are fixedly connected to the outside of the support rod 7, and a first fixing groove 9 is provided on the top of the load - bearing block 8. A plurality of balls 10 distributed at equal intervals in a ring are rotatably connected inside the first fixing groove 9, and a fixing sleeve 11 is fixedly connected to the outside of the plurality of balls 10 distributed at equal intervals in a ring;

[0030] Two installation cavities 12 are provided inside the hinge rotating wing 5, and the two installation cavities 12 are rotatably connected to the load - bearing block 8. A second fixing groove 13 is provided on the inner top of the installation cavity 12, and the top of the balls 10 distributed at equal intervals in a ring on the inner side of the second fixing groove 13 is rotatably connected. And a bearing structure is formed among the second fixing groove 13, the first fixing groove 9, the balls 10, and the fixing sleeve 11.

[0031] The hinge fixed wing 4 is fixedly connected to one side of the door frame 1, and the hinge rotating wing 5 is fixedly connected to one side of the screen door 3.

[0032] An installation plate 14 is slidably connected in a confused manner to the outside of the door frame 1, and a plurality of equally - distributed installation grooves 15 are provided on the front side of the door frame 1, and a buffer strip 16 is slidably connected inside the installation groove 15.

[0033] A support frame 19 is slidably connected inside the door frame 1, and two symmetrically - distributed positioning slide rods 17 are fixedly connected to the rear side of the buffer strip 16, and the positioning slide rods 17 are slidably connected inside the support frame 19.

[0034] A spring 18 is provided on the outside of the positioning slide rod 17, and both ends of the spring 18 are fixedly connected between the buffer strip 16 and the support frame 19 respectively.

[0035] Sound - insulating cotton 20 is fixedly connected inside the door frame 1, and the sound - insulating cotton 20 is located outside the support frame 19;

[0036] In this noise - reducing door frame of the screen door, a bearing structure is formed among the second fixing groove 13, the first fixing groove 9, the balls 10, and the fixing sleeve 11 inside the hinge assembly 2. The two hinge rotating wings 5 bear the weight of the whole screen door 3. When the screen door 3 rotates around one side of the door frame 1 through the hinge assembly 2, at this time, the screen door 3 will drive the hinge rotating wing 5 to rotate inside the hinge fixed wing 4. During the rotation of the hinge rotating wing 5, the support rod 7 will rotate inside the hinge rotating wing 5;

[0037] The load-bearing block 8 will rotate inside the installation cavity 12. At the same time, the bearing structure provided at the bottom of the load-bearing block 8 supports the entire installation groove 15 through the second fixing groove 13. By supporting the hinge rotating wing 5, the entire shielding door 3 is supported. When the shielding door 3 rotates, the hinge rotating wing 5 does not directly press on the hinge fixing wing 4, reducing the interaction force between the hinge rotating wing 5 and the hinge fixing wing 4, thereby reducing the noise when the shielding door 3 drives the hinge rotating wing 5 to rotate;

[0038] When the shielding door 3 is closed, the inner side of the shielding door 3 will come into contact with the door frame 1. Before contacting the door frame 1, the shielding door 3 will first come into contact with the buffer strip 16, causing the shielding door 3 to drive the buffer strip 16 to slide inward along the door frame 1. At this time, the buffer strip 16 will compress the spring 18, and the deformation of the spring 18 absorbs the impact of the shielding door 3 on the buffer strip 16, thereby achieving the effect of silencing the shielding door 3. At the same time, the buffer strip 16 will drive the positioning slide rod 17 to slide inside the support frame 19. With the setting of the sound insulation cotton 20, the noise inside the door frame 1 is absorbed.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sound-absorbing door frame for a shielding door, comprising a door frame (1), a hinge assembly (2), and a shielding door (3), wherein two hinge assemblies (2) are provided, and the two hinge assemblies (2) are symmetrically distributed on the front side of the door frame (1), and the shielding door (3) is hinged to the front side of the door frame (1) through the hinge assembly (2); Features: The hinge assembly (2) comprises a hinge fixed wing (4), and the hinge fixed wing (4) is rotatably connected to a hinge rotating wing (5) inside. The top and bottom of the hinge fixed wing (4) are both rotatably connected to support bars (6), and a support rod (7) is fixedly connected between the ends of the support bar (6). Two vertically distributed load-bearing blocks (8) are fixedly connected to the outside of the support rod (7), and the top of the load-bearing block (8) is provided with a first fixed groove (9), a plurality of annularly equidistantly distributed balls (10) are rotatably connected inside the first fixed groove (9), and a fixing sleeve (11) is fixedly connected to the outside of the plurality of annularly equidistantly distributed balls (10).

2. The sound-absorbing door frame of a shielding door according to claim 1, characterized in that: Two installation cavities (12) are arranged inside the hinge rotating wing (5), and the two installation cavities (12) are rotatably connected to the load-bearing block (8). A second fixed groove (13) is arranged at the top of the inner side of the installation cavity (12), and the top of the balls (10) equidistantly distributed in an annular shape inside the second fixed groove (13) are rotatably connected, and a bearing structure is formed between the second fixed groove (13), the first fixed groove (9), the balls (10) and the fixed sleeve (11).

3. The sound-absorbing door frame of a shielding door according to claim 2, characterized in that: The hinge fixing wing (4) is fixedly connected to one side of the door frame (1), and the hinge rotating wing (5) is fixedly connected to one side of the shielding door (3).

4. The sound-absorbing door frame of a shielding door according to claim 1, characterized in that: The outer side of the door frame (1) is slidably connected to a mounting plate (14), and the front side of the door frame (1) is provided with a plurality of equidistantly distributed mounting grooves (15), and the interior of the mounting grooves (15) is slidably connected to a buffer strip (16).

5. The sound-absorbing door frame of a shielding door according to claim 4, characterized in that: The door frame (1) is slidably connected to a support frame (19) inside, and two symmetrically distributed positioning slide bars (17) are fixedly connected to the rear side of the buffer strip (16), and the positioning slide bars (17) are slidably connected to the inside of the support frame (19).

6. The sound-absorbing door frame of a shielding door according to claim 5, characterized in that: A spring (18) is arranged outside the positioning slide rod (17), and two ends of the spring (18) are respectively fixedly connected between the buffer strip (16) and the support frame (19).

7. The sound-absorbing door frame of a shielding door according to claim 6, characterized in that: The door frame (1) is internally fixedly connected with sound insulation cotton (20), and the sound insulation cotton (20) is located outside the support frame (19).

Images