Torsion hinge
By introducing limiting parts and simplified disassembly design into the torsion hinge, the problems of elastic fatigue and deformation of the torsion spring are solved, and the torsion hinge with convenient replacement and high stability are achieved, reducing maintenance costs.
Patent Information
- Application Number
- CN202421340172.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-06-12
AI Technical Summary
The torsion springs of existing torsion hinges are prone to elastic fatigue and deformation after the use time increases, resulting in reduced performance and difficult to replace, affecting the function of the hinges.
A torsion hinge hinge including the first link page, the second link page, the articulation shaft, the torsion spring and the limiting member is designed. The rotation of the articulation shaft is limited by the limiting member, ensuring the effective service life of the torsion spring, and convenient disassembly and replace after the torsion spring fails.
It improves the stability of the torque hinge, facilitates the replacement of torsion springs, extends the service life of the equipment, and saves maintenance costs.
Smart Images
Figure CN222823073U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hinges, and in particular relates to a torsion hinge. Background Art
[0002] A torsion hinge is a connecting or rotating device that allows a door, cover or other swinging part to rotate and automatically reset itself when the external force is released, driven by a torsion spring. A torsion hinge usually includes a first chain leaf, a second chain leaf and a torsion spring connected to a hinge shaft. However, as the torsion spring is used for a long time, elastic fatigue and deformation may occur, resulting in performance degradation. In previous designs, it is difficult to replace the torsion spring, which affects the function of the hinge. Therefore, in response to the above problems, we propose a torsion hinge. Utility Model Content
[0003] In order to overcome the problems existing in the related art, the utility model discloses a torsion hinge.
[0004] In order to achieve the above purpose, a technical solution adopted by the utility model is:
[0005] A torsion hinge comprises a first chain leaf, a second chain leaf, a hinge shaft, a torsion spring and a limiter, wherein the first chain leaf comprises a first hinge plate and two first hinge cylinders coaxially fixed to the first hinge plate, and the two first hinge cylinders are both threadedly fixed to the hinge shaft;
[0006] The second chain leaf comprises a second hinge plate and two second hinge cylinders coaxially fixed to the second hinge plate, the two second hinge cylinders are sleeved outside the hinge shaft and are located between the two first hinge cylinders, the torsion spring is sleeved outside the hinge shaft and is located between the two second hinge cylinders, and the torsion spring is respectively in contact with the first hinge plate and the second hinge plate;
[0007] The limiting member is arranged between the hinge shaft and the first hinge cylinder to limit the hinge shaft from rotating relative to the first hinge cylinder.
[0008] Furthermore, the hinge shaft is provided with a hinge groove, one end of the limiter is hinged in the hinge groove, and the limiter can be rotated into and out of the hinge groove;
[0009] The first hinge tube is provided with a limiting groove, and one end of the limiting member can be rotated into the limiting groove to abut against the bottom wall of the limiting groove.
[0010] Furthermore, the outer sides of the upper and lower ends of the hinge shaft both have external threads, the thread directions of the two external threads are the same, the inner walls of the two first hinge tubes are both provided with internal thread grooves matching the external threads, and the two external threads are respectively threadedly connected to the two internal thread grooves.
[0011] Furthermore, the position of the hinge groove corresponds to the position of the external screw thread, and the position of the limit groove corresponds to the position of the internal screw thread groove.
[0012] Furthermore, the left and right walls of the hinge groove are provided with fixed shaft holes penetrating the hinge shaft, a rotating shaft is fixedly connected to the two fixed shaft holes, the limiting member is provided with a sleeve shaft hole, and the limiting member is sleeved on the outside of the rotating shaft through the sleeve shaft hole.
[0013] Furthermore, the upper and lower ends of the hinge shaft are provided with twisting grooves.
[0014] Furthermore, the twisting groove is a cross-shaped structure.
[0015] Furthermore, the torsion spring includes a spring body and a torsion arm. The torsion arm has two torsion arms, which are respectively located at two ends of the spring body. The spring body is sleeved on the outside of the hinge shaft, and the two torsion arms are respectively in contact with the first hinge plate and the second hinge plate.
[0016] Furthermore, the first hinge plate and the second hinge plate are both provided with a plurality of mounting holes.
[0017] Furthermore, the first link page and the second link page are both integral structures.
[0018] The torsion hinge provided by the utility model has good stability in use. After its torsion spring fails, the torsion spring can be disassembled and replaced. The disassembly is simple and convenient, which is conducive to the recycling of the torsion hinge and can save the maintenance cost of the corresponding installation scenario to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;
[0021] Figure 2 for Figure 1 A schematic diagram of the structure enlargement at the center A;
[0022] Figure 3 This is a schematic structural diagram of a hinge shaft in one embodiment of the utility model;
[0023] Figure 4 for Figure 3 A schematic diagram of the structure enlarged at B in the middle;
[0024] Figure 5This is a schematic diagram of the structure of the first chain page in one embodiment of the utility model;
[0025] Figure 6 It is a schematic diagram of the connection between the rotating shaft and the limiting member in one embodiment of the utility model.
[0026] The meanings of the symbols in the accompanying drawings are:
[0027] The first chain leaf 1, the first hinge plate 11, the mounting hole 111, the first hinge cylinder 12, the inner screw groove 1201, the limiting groove 121, the second chain leaf 2, the second hinge plate 21, the second hinge cylinder 22, the hinge shaft 3, the outer screw 301, the fixed shaft hole 302, the rotating shaft 303, the twisting groove 304, the hinge groove 31, the torsion spring 4, the spring body 41, the torsion arm 42, the limiting member 5, and the sleeve shaft hole 51. DETAILED DESCRIPTION
[0028] The utility model will be further described below in conjunction with the accompanying drawings.
[0029] Reference Figure 1-Figure 6 As shown, the torsion hinge of this embodiment includes a first chain page 1, a second chain page 2, a hinge shaft 3, a torsion spring 4 and a limiter 5.
[0030] In this embodiment, the first chain leaf 1 includes a first hinge plate 11 and two first hinge tubes 12 coaxially fixed to the first hinge plate 11, and the inner sides of the two first hinge tubes 12 are provided with internal screw grooves 1201. The first hinge plate 11 is provided with three longitudinally spaced mounting holes 111, and the first hinge plate 11 can be fixed to a mounting surface, such as a door panel or a door frame, through the mounting holes 111.
[0031] In this embodiment, the first hinge tube 12 at the lower side is provided with a limiting groove 121 , which is a longitudinal strip structure that passes through the inner and outer walls of the first hinge tube 12 (including the inner screw groove 1201 ).
[0032] In this embodiment, the second chain leaf 2 includes a second hinge plate 21 and two second hinge tubes 22 coaxially fixed to the second hinge plate 21. The second hinge plate 21 is also provided with three longitudinally spaced mounting holes 111, through which the second hinge plate 21 can be fixed to a mounting surface, such as a door panel or a door frame.
[0033] In this embodiment, the first chain page 1 and the second chain page 2 are both metal integrated structures, which are stable, reliable, strong and durable.
[0034] In this embodiment, the outer sides of the upper and lower ends of the hinge shaft 3 are both provided with external screws 301 matching the internal screw groove 1201, and the thread directions of the two external screws 301 are the same. A hinge groove 31 is also provided at the lower part of the hinge shaft 3, and the left and right walls of the hinge groove 31 are both provided with fixed shaft holes 302 penetrating the hinge shaft 3, and the two fixed shaft holes 302 are commonly fixed with a rotating shaft 303. The limiting member 5 is provided with a sleeve shaft hole 51, and the limiting member 5 is sleeved on the outer side of the rotating shaft 303 through the sleeve shaft hole 51, so that the limiting member 5 is hinged in the hinge groove 31. The height of the hinge groove 31 is greater than the length of the limiting member 5, so that the limiting member 5 can be completely rotated upward into the hinge groove 31.
[0035] It should be emphasized that the opening position of the hinge groove 31 corresponds to the position of the lower external screw thread 301 and corresponds to the position of the limiting groove 121 .
[0036] It is worth mentioning that in this embodiment, both the upper and lower ends of the hinge shaft 3 are provided with a screwing groove 304, and the screwing groove 304 is specifically a cross-shaped structure. This structure is provided to facilitate the use of tools to rotate the hinge shaft 3, such as using a cross screwdriver to insert into the screwing groove 304 to rotate the hinge shaft 3.
[0037] In this embodiment, the torsion spring 4 includes a spring body 41 and a torsion arm 42. There are two torsion arms 42, which are respectively located at both ends of the spring body 41. It is worth mentioning that the two torsion arms 42 are both L-shaped structures, and the vertical sections of the two torsion arms 42 are respectively located on the left and right sides of the spring body 41.
[0038] When the torsion hinge is assembled, the first hinge cylinder 12, the second hinge cylinder 22 and the spring body 41 are kept aligned in the axial direction. Specifically, the spring body 41 should be located between the two second hinge cylinders 22, the two second hinge cylinders 22 should be located between the two first hinge cylinders 12, and the two torsion arms 42 should be located on the same side of the first hinge plate 11 and the second hinge plate 21. It is worth mentioning that the first hinge cylinder 12 with the limiting groove 121 should be on the upper side. After aligning the above three, the hinge shaft 3 is screwed into the upper first hinge tube 12, the upper second hinge tube 22, the spring body 41, the lower second hinge tube 22 and the lower first hinge tube 12 from top to bottom, and finally the two outer screws 301 are screwed into the two inner screw grooves 1201 respectively, so that the hinge shaft 3 is threadedly fixed with the two first hinge tubes 12, and the two second hinge tubes 22 and the spring body 41 are sleeved on the outside of the hinge shaft 3, so that the first chain leaf 1, the second chain leaf 2 and the torsion spring 4 are assembled together through the hinge shaft 3. After installation, when the first hinge plate 11 and the second hinge plate 21 are pushed toward the torsion arm 42, the first hinge plate 11 and the second hinge plate 21 will respectively abut and squeeze the two torsion arms 42, so that the torsion spring 4 will twist to accumulate elastic force. After the pushing force on the first hinge plate 11 and the second hinge plate 21 is removed, the torsion spring 4 will rotate to apply a pushing force to the first hinge plate 11 and the second hinge plate 21 through the two torsion arms 42, so that the two can be reset and flipped.
[0039] It should be emphasized that before screwing in the hinge shaft 3, the external thread 301 of the hinge limiter 5 needs to be located on the upper side of the hinge shaft 3, so that the limiter 5 can be rotated into the hinge groove 31 under the action of its own gravity, so that the external thread 301 at this location can smoothly enter the first hinge tube 12 on the upper side. After the two external threads 301 are respectively screwed into the two internal thread grooves 1201, the angle of the hinge shaft 3 is fine-tuned to align the hinge groove 31 with the limiter groove 121, and then the entire torsion hinge is turned upside down so that the external thread 301 on which the limiter 5 is set is located on the lower side of the hinge shaft 3, and then one side of the hinge groove 31 of the entire torsion hinge is tilted downward at a certain angle until the limiter 5 is rotated out of the hinge groove 31 under the action of gravity, and the limiter 5 rotated out of the hinge groove 31 will extend into the limiter groove 121 until it is aligned with the limiter groove 121. The bottom wall of the groove 121 abuts against the bottom wall of the groove 121. When the torsion hinge is installed in a state where the external thread 301 with the limit piece 5 is maintained at the lower side of the hinge shaft 3, the limit piece 5 will be always in the limit groove 121 under the action of gravity, so that the rotation of the hinge shaft 3 will be limited by the limit piece 5. After the torsion hinge is installed and applied, when the hinge shaft 3 rotates relative to the first chain page 1 due to vibration generated by use, the limit piece 5 will inhibit the rotation to avoid loosening of the thread of the hinge shaft 3, thereby preventing the hinge shaft 3 from falling off from the first chain page 1.
[0040] When the torsion spring 4 loses its elasticity after long-term use and needs to be replaced, the torsion spring 4 can be disassembled in the following manner. First, use a slender tool to push the stopper 5 to flip it upward into the hinge groove 31, and then completely unscrew the hinge shaft 3 from the first chain leaf 1, so that the old torsion spring 4 can be removed. The disassembly operation is simple and convenient. After disassembly, the operation of installing a new torsion spring 4 is the same as the aforementioned assembly operation, which will not be repeated here.
[0041] To sum up, the torsion hinge provided by the utility model has good stability in use. After its torsion spring fails, the torsion spring can be disassembled and replaced. The disassembly is simple and convenient, which is conducive to the recycling of the torsion hinge and can save the maintenance cost of the corresponding installation scenario to a certain extent.
[0042] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.
Claims
1. A torsion hinge, comprising a first chain leaf, a second chain leaf, a hinge shaft, a torsion spring and a limiter, characterized in that: The first chain leaf comprises a first hinge plate and two first hinge cylinders coaxially fixed to the first hinge plate, and the two first hinge cylinders are both threadedly fixed to the hinge shaft; The second chain leaf comprises a second hinge plate and two second hinge cylinders coaxially fixed to the second hinge plate, the two second hinge cylinders are sleeved outside the hinge shaft and are located between the two first hinge cylinders, the torsion spring is sleeved outside the hinge shaft and is located between the two second hinge cylinders, and the torsion spring is respectively in contact with the first hinge plate and the second hinge plate; The limiting member is arranged between the hinge shaft and the first hinge cylinder to limit the hinge shaft from rotating relative to the first hinge cylinder.
2. A torsion hinge according to claim 1, characterized in that: The hinge shaft is provided with a hinge groove, one end of the limiter is hinged in the hinge groove, and the limiter can be rotated into and out of the hinge groove; The first hinge tube is provided with a limiting groove, and one end of the limiting member can be rotated into the limiting groove to abut against the bottom wall of the limiting groove.
3. A torsion hinge according to claim 2, characterized in that: The outer sides of the upper and lower ends of the hinge shaft are both provided with external threads, the thread directions of the two external threads are the same, the inner walls of the two first hinge cylinders are both provided with internal thread grooves matching the external threads, and the two external threads are respectively threadedly connected with the two internal thread grooves.
4. A torsion hinge according to claim 3, characterized in that: The position of the hinge groove corresponds to the position of the external screw thread, and the position of the limit groove corresponds to the position of the internal screw thread groove.
5. A torsion hinge according to claim 4, characterized in that: The left and right walls of the hinge groove are both provided with fixed shaft holes penetrating the hinge shaft, a rotating shaft is fixedly connected to the two fixed shaft holes, the limiting member is provided with a sleeve shaft hole, and the limiting member is sleeved on the outside of the rotating shaft through the sleeve shaft hole.
6. The torsion hinge according to claim 1, characterized in that: The upper and lower ends of the hinge shaft are both provided with twisting grooves.
7. A torsion hinge according to claim 6, characterized in that: The twisting groove is a cross-shaped structure.
8. The torsion hinge according to claim 1, characterized in that: The torsion spring comprises a spring body and a torsion arm. The torsion arm has two torsion arms, which are respectively located at two ends of the spring body. The spring body is sleeved on the outside of the hinge shaft, and the two torsion arms are respectively in contact with the first hinge plate and the second hinge plate.
9. The torsion hinge according to claim 1, characterized in that: The first hinge plate and the second hinge plate are both provided with a plurality of mounting holes.
10. The torsion hinge according to claim 1, characterized in that: The first chain page and the second chain page are both integral structures.