Mute hinge of dividing wall door

Abstract

The utility model provides a dividing wall door silence hinge relates to hinge field, including: fixed part and rotating part, the fixed part is equipped with the chute inside, and the chute inside is equipped with spring and inner slider, and the outer end of inner slider is rotatingly connected with the connecting shaft, and the connecting shaft extends to the outside of chute simultaneously, the rotating part includes connecting sleeve, and the connecting sleeve is equipped with the spring and the inner slider. A shaft hole is formed in the connecting sleeve, a key block is arranged on the inner wall of the shaft hole, meanwhile, the key block is slidably connected with a limiting groove formed in the outer wall of the connecting shaft in an inserted mode, a wear-resisting layer is arranged on the outer side of the shaft hole, and a sound absorbing layer is arranged on the outer side of the wear-resisting layer. The door hinge solves the problems that an existing door hinge is inconvenient to install, and noise is prone to being generated in the using process.

Description

Technical Field

[0001] This utility model relates to the field of folding technology, specifically to a silent folding hinge for a partition door. Background Technology

[0002] Door hinges (also called folding hinges) are a type of home decoration material. Hinges are usually bi-fold, consisting of a pair of metal or non-metal blades connected by a pivot pin, and are components that connect two parts of an object and allow them to move. A search revealed existing technology (publication number: CN216921765U), which describes "a door hinge with good fit, specifically comprising: door frame blades and door panel blades hinged together, wherein the bottom surface of the door panel blades is mounted on an outer door panel, and the bottom surface of the door frame blades is mounted on an outer door frame; the thickness of the door panel blades is less than the thickness of the door frame blades; when the door hinge is closed, the front end of the door panel blades is lower than the bottom surface of the door frame blades; the door panel blades have multiple recessed mounting holes, and correspondingly, an outwardly protruding annular boss is formed on one side of the bottom surface of the door panel. This door hinge has good fit, as the cross-sectional thickness of its door panel blades is less than that of the door frame blades; its actual performance after installation is good, effectively preventing the door from rebounding and not closing properly when closed, unlike traditional hinges where the hinge position needs adjustment due to door gaps."

[0003] While existing door hinges achieve a tight seal, they still have some shortcomings: Installation typically requires first measuring the installation location, then installing the fixing part (one side metal blade) onto the door frame, and finally lifting the door to install the other side metal blade; or first installing the rotating part (the other metal blade) onto the door, and then fixing the other side metal blade to the door frame. In either case, the door needs to be lifted and straightened before tightening the screws, leading to potential misalignment and cumbersome installation. Furthermore, prolonged use of the hinge pins can cause localized corrosion, resulting in noise from rotating friction. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, a silent hinge for partition doors is provided to solve the problems of inconvenience during installation and noise during use of existing door hinges.

[0005] To achieve the above objectives, a silent hinge for a partition door is provided, comprising: a fixing part and a rotating part. The fixing part has a sliding groove inside, and a spring and an inner slider are provided inside the sliding groove. The outer end of the inner slider is rotatably connected to a connecting shaft, and the connecting shaft extends to the outside of the sliding groove. The rotating part includes a connecting sleeve, and a shaft hole is provided inside the connecting sleeve. A key block is provided on the inner wall of the shaft hole, and the key block is slidably inserted into a limiting groove on the outer wall of the connecting shaft. A wear-resistant layer is provided on the outer side of the shaft hole, and a sound-absorbing layer is provided on the outer side of the wear-resistant layer.

[0006] Furthermore, both the fixing part and the rotating part are provided with mounting holes, and silent bearings are installed inside the fixing part at both ends of the slide groove.

[0007] Furthermore, the inner side of the silent bearing is provided with an inner sleeve, and the outer side of the silent bearing is provided with an outer sleeve, and the inner sleeve and the outer sleeve are respectively fixed to the inner ring and the outer ring of the silent bearing.

[0008] Furthermore, a connecting block is connected to the outer side of the inner slider, and the connecting block is slidably connected to the outer side of the slide groove and in the guide groove opened on the surface of the fixing part. At the same time, an outer slider is connected to the outer end of the connecting block.

[0009] Furthermore, the outer slider is slidably connected to the outer opening of the guide groove, and the outer slider protrudes from the outer surface of the fixing part.

[0010] Furthermore, the connecting shaft is slidably inserted into the inner sleeve of the shaft, and the limiting groove extends to the outer end face of the connecting shaft.

[0011] Furthermore, a sealing ring is provided around the outer port of the shaft hole, and the sealing ring is located on the outside of the sound-absorbing layer, and the sound-absorbing layer is made of sound-absorbing cotton board material.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. During installation, first, with the hinges connected as a whole, place them against the door frame and door body. Then, measure the mounting hole positions of the fixing and rotating parts of the hinges. Separate the fixing and rotating parts, and then fix the fixing part to the pre-measured door frame hole position of the partition door through the mounting hole and screws. Then, fix the rotating part to the door body hole position of the partition door. Then, straighten the door body so that the connecting sleeve is aligned with the position of the connecting shaft. At this time, manually pull the outer slider to move it closer, thereby retracting the connecting shaft into the slide groove. When the connecting sleeve is aligned with the position of the connecting shaft, release the outer slider, so that it is pushed out and inserted into the connecting sleeve under the action of the spring and the inner slider. During the process, pay attention to the sliding connection of the limit groove and the key block, thus achieving the effect of easy installation, and also making it easy to disassemble the partition door during maintenance.

[0014] 2. The use of silent bearings enables a silent rotation effect between the connecting shaft and the fixed part. At the same time, the sealing ring and sound-absorbing layer inside the connecting sleeve absorb and reduce the noise generated between the connecting shaft and the connecting sleeve, thereby avoiding friction noise caused by rust after long-term use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the folding mechanism according to an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the folding and splitting structure of an embodiment of the present utility model.

[0017] Figure 3 This is a partial cross-sectional structural diagram of the fixing part according to an embodiment of the present utility model.

[0018] Figure 4 This is a schematic cross-sectional view of the connecting sleeve according to an embodiment of the present utility model.

[0019] In the diagram: 1. Fixed part; 11. Connecting shaft; 12. Key block; 13. Mounting hole; 14. Limiting groove; 15. Silent bearing; 151. Inner shaft sleeve; 152. Outer shaft sleeve; 16. Guide groove; 17. Outer slider; 18. Spring; 19. Slide groove; 110. Inner slider; 111. Connecting block; 2. Rotating part; 21. Connecting sleeve; 211. Shaft hole; 212. Sealing ring; 213. Wear-resistant layer; 214. Sound-absorbing layer. Detailed Implementation

[0020] Reference Figures 1 to 4 As shown, this utility model provides a silent hinge for a partition door, including: a fixing part 1 and a rotating part 2. The fixing part 1 has a sliding groove 19 inside, and a spring 18 and an inner slider 110 are provided inside the sliding groove 19. The outer end of the inner slider 110 is rotatably connected to a connecting shaft 11, and the connecting shaft 11 extends to the outside of the sliding groove 19. The rotating part 2 includes a connecting sleeve 21, and a shaft hole 211 is provided inside the connecting sleeve 21. A key block 12 is provided on the inner wall of the shaft hole 211. The key block 12 is slidably inserted into a limiting groove 14 opened on the outer wall of the connecting shaft 11. A wear-resistant layer 213 is provided on the outer side of the shaft hole 211, and a sound-absorbing layer 214 is provided on the outer side of the wear-resistant layer 213. A sealing ring 212 is provided around the outer port of the shaft hole 211, and the sealing ring 212 is located on the outer side of the sound-absorbing layer 214. The sound-absorbing layer 214 is made of sound-absorbing cotton board material.

[0021] In this embodiment, the fixing part 1 and the rotating part 2 constitute the main structure of the silent hinge of the partition door involved in this application.

[0022] Specifically, there are two unconnected slides 19, and there are also two springs 18.

[0023] Specifically, the key block 12 is also set inside the inner sleeve 151 of the shaft, so that the connecting shaft 11 and the inner sleeve 151 rotate synchronously, and the connecting sleeve 21 rotates synchronously with the connecting shaft 11.

[0024] It should be noted that although the key block 12 makes the connecting shaft 11 and the connecting sleeve 21 a plug-in fixed connection, there is still a slight friction effect between the connecting shaft 11 and the connecting sleeve 21 after the connection because there is a gap between the limiting groove 14 and the key block 12 (to facilitate plugging during installation). At this time, the wear-resistant layer 213 reduces the wear.

[0025] As a preferred embodiment, by providing a sound-absorbing layer 214 to wrap around the outside of the shaft hole 211 of the connecting sleeve 21, the friction between the connecting shaft 11 and the wear-resistant layer 213 achieves a sound-absorbing effect.

[0026] like Figure 2 Only Figure 4 In the middle, both the fixed part 1 and the rotating part 2 are provided with mounting holes 13, and the fixed part 1 is equipped with silent bearings 15 at both ends of the slide groove 19. The inner side of the silent bearing 15 is provided with a shaft inner sleeve 151, and the outer side of the silent bearing 15 is provided with a shaft outer sleeve 152. The shaft inner sleeve 151 and the shaft outer sleeve 152 are respectively fixed to the inner ring and outer ring of the silent bearing 15. The outer side of the inner slider 110 is connected to a connecting block 111, and the connecting block 111 is slidably connected to the outer side of the slide groove 19 and in the guide groove 16 opened on the surface of the fixed part 1. At the same time, the outer end of the connecting block 111 is connected to an outer slider 17, which is slidably connected to the outer groove of the guide groove 16 and protrudes from the outer surface of the fixed part 1. The connecting shaft 11 is slidably inserted into the shaft inner sleeve 151, and the limiting groove 14 extends to the outer end face of the connecting shaft 11.

[0027] Specifically, the inner end of the connecting shaft 11 is rotatably connected to one side of the inner slider 110 via a bearing.

[0028] Specifically, the guide groove 16 is connected to the slide groove 19, so that the extension and retraction of the connecting shaft 11 can be realized by the opening and closing movement of the outer slider 17, which facilitates disassembly and assembly.

[0029] In use, first, with the hinges connected as a whole, place them against the door frame and door body. Then, measure the mounting hole positions of the fixing and rotating parts of the hinges. Separate the fixing and rotating parts, and then fix the fixing part to the pre-measured door frame hole position through the mounting hole and screws. Next, fix the rotating part to the door body hole position. Then, straighten the door body so that the connecting sleeve is aligned with the connecting shaft. At this point, manually pull the outer slider to move it closer, thereby retracting the connecting shaft into the slide groove. When the connecting sleeve and the connecting shaft are aligned, release the outer slider, so that the connecting shaft is pushed out and inserted into the connecting sleeve under the action of the spring and the inner slider. During the process, pay attention to the sliding connection of the limit groove and the key block, thus achieving the effect of easy installation and also making it easy to disassemble the door during maintenance.

[0030] This utility model of a silent hinged partition door effectively solves the problems of inconvenience during installation and noise during use of existing hinged partition doors. It improves the ease of installation and reduces the possibility of noise on the basis of existing silent hinged partition door technology.

Claims

1. A silent hinge for a partition door, comprising: The fixing part (1) and the rotating part (2) are characterized in that: the fixing part (1) is provided with a sliding groove (19) inside, and a spring (18) and an inner slider (110) are provided inside the sliding groove (19), and the outer end of the inner slider (110) is rotatably connected to a connecting shaft (11), and the connecting shaft (11) extends to the outside of the sliding groove (19). The rotating part (2) includes a connecting sleeve (21), and a shaft hole (211) is provided inside the connecting sleeve (21), and a key block (12) is provided on the inner wall of the shaft hole (211), and the key block (12) is slidably inserted into a limiting groove (14) opened on the outer wall of the connecting shaft (11). A wear-resistant layer (213) is provided on the outer side of the shaft hole (211), and a sound-absorbing layer (214) is provided on the outer side of the wear-resistant layer (213).

2. The silent hinge for a partition door according to claim 1, characterized in that, Both the fixed part (1) and the rotating part (2) are provided with mounting holes (13), and silent bearings (15) are installed inside the fixed part (1) and at both ends of the slide groove (19).

3. A silent hinge for a partition door according to claim 2, characterized in that, The silent bearing (15) has an inner sleeve (151) on its inner side and an outer sleeve (152) on its outer side. The inner sleeve (151) and the outer sleeve (152) are fixed to the inner and outer rings of the silent bearing (15), respectively.

4. A silent hinge for a partition door according to claim 1, characterized in that, The inner slider (110) is connected to a connecting block (111) on its outer side, and the connecting block (111) is slidably connected to the outside of the slide groove (19) and in the guide groove (16) opened on the surface of the fixing part (1). At the same time, the outer end of the connecting block (111) is connected to an outer slider (17).

5. A silent hinge for a partition door according to claim 4, characterized in that, The outer slider (17) is slidably connected to the outer groove of the guide groove (16), and the outer slider (17) protrudes from the outer surface of the fixing part (1).

6. A silent hinge for a partition door according to claim 1, characterized in that, The connecting shaft (11) is slidably inserted into the inner sleeve (151), and the limiting groove (14) extends to the outer end face of the connecting shaft (11).

7. A silent hinge for a partition door according to claim 1, characterized in that, A sealing ring (212) is provided around the outer port of the shaft hole (211), and the sealing ring (212) is located on the outside of the sound-absorbing layer (214), and the sound-absorbing layer (214) is made of sound-absorbing cotton board material.

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