Spring hinge convenient to disassemble

Abstract

The spring hinge comprises a door frame hinge and a door leaf hinge, a shaft sleeve is arranged on one side of the door frame hinge, a fixed one-way tooth, a movable one-way tooth, a spring clamp, a spring and a rotating shaft are sequentially arranged in the shaft sleeve, the fixed one-way tooth is fixed to the inner bottom of the shaft sleeve through a jackscrew, one end of the movable one-way tooth is in meshed connection with the fixed one-way tooth, and the other end of the movable one-way tooth is in meshed connection with the rotating shaft. One end of the spring is connected with the spring clip, the other end of the spring is connected with the rotating shaft, the upper part of the rotating shaft extends out of the shaft sleeve, and the sleeve on one side of the door leaf is sleeved on the rotating shaft, so that the quick mounting and dismounting of the door leaf are realized; a through hole for a hexagon wrench to penetrate through is formed in the fixed one-way tooth, the torsion of the spring can be adjusted through the hexagon wrench, and then the automatic door closing force is adjusted. The automatic closing device is convenient to mount and dismount, and can realize an automatic closing function without being matched with a door closer.

Description

Technical Field

[0001] This utility model relates to a hinge, and more particularly to a spring hinge that is easy to disassemble. Background Technology

[0002] Currently, people choose to install screen doors to maintain indoor air circulation and freshness, as well as to prevent mosquitoes, willow catkins, and other insects from entering. Existing screen doors are generally installed on the door frame using hinges. During installation, the hinge frame side is connected to the door frame with screws, and the door panel is connected to the screen door with screws, thus completing the installation. Over time, dust and dead insects accumulate on the screen, affecting its permeability, thus requiring timely cleaning. However, because the existing hinges are not removable, disassembling and cleaning the screen door is inconvenient. Repeated disassembly can cause the threads to fail, affecting the safety of the screen door. In winter, when the screen door is not in use, the hinge screws need to be removed for cleaning and storage, and then reinstalled the screen door the following year, which is time-consuming and laborious.

[0003] Secondly, existing hinges cannot close automatically after the screen door is opened, and they need to be closed manually. If automatic closing is required, a door closer usually needs to be added to the door. Commonly used door closers include concealed door closers and hydraulic door closers. Concealed door closers are time-consuming and laborious to install and are extremely destructive. Hydraulic door closers are bulky and have an unsightly appearance, neither of which can meet the requirements. Summary of the Invention

[0004] This utility model provides a spring hinge that is easy to disassemble, featuring convenient installation and removal, and the ability to achieve automatic closing without the need for a door closer. The specific technical solution is as follows:

[0005] A spring hinge that is easy to disassemble includes a door frame hinge and a door leaf hinge. The door frame hinge has a bushing on one side. Inside the bushing are sequentially arranged a fixed one-way tooth, a movable one-way tooth, a spring clip, a spring, and a rotating shaft. The fixed one-way tooth is fixed to the inner bottom of the bushing by a set screw. One end of the movable one-way tooth engages with the fixed one-way tooth, and the other end is connected to the spring clip. One end of the spring is connected to the spring clip, and the other end is connected to the rotating shaft. The upper part of the rotating shaft extends outside the bushing. A sleeve on one side of the door leaf hinge is fitted onto the rotating shaft, thereby enabling quick installation and disassembly of the door leaf hinge.

[0006] The fixed one-way tooth is provided with a through hole through which a hex wrench can pass. The torque of the spring can be adjusted by the hex wrench, thereby adjusting the automatic closing force.

[0007] Furthermore, one end of the movable one-way tooth is provided with a hexagonal cavity that matches and connects to a hexagonal wrench, and the other end of the movable one-way tooth is provided with a protrusion. The protrusion is inserted into the insertion hole of the spring clip. The hexagonal cavity of the movable one-way tooth is connected to the through hole of the fixed one-way tooth. The hexagonal wrench passes through the through hole of the fixed one-way tooth and extends into the hexagonal cavity of the movable one-way tooth. The hexagonal wrench drives the movable one-way tooth to rotate, thereby causing the spring clip to rotate to adjust the torque of the spring.

[0008] Furthermore, the protrusion is a hexagonal protrusion, and the insertion hole on the spring clip is a hexagonal insertion hole. Rotating the hexagonal wrench causes the spring clip to rotate with the movable one-way clip to adjust the torque of the spring.

[0009] Furthermore, a first slot is provided at the end of the spring clip away from the insertion hole, and a second slot is provided on the rotating shaft. One end of the spring is engaged in the first slot, and the other end of the spring is engaged in the second slot.

[0010] Furthermore, the rotating shaft is provided with an annular groove, and the set screw passes through the second threaded hole of the door frame leaf and is placed in the annular groove of the rotating shaft to prevent the rotating shaft from disengaging from the bushing of the door frame leaf.

[0011] Furthermore, a hexagonal post is provided in the middle of the pivot, and a hexagonal hole is provided in the sleeve to cooperate with the hexagonal post; a guide post is provided at the upper end of the pivot to facilitate the quick fitting of the sleeve of the door leaf onto the pivot.

[0012] Furthermore, the hexagonal prism has a bevel at one end near the guide post, making it easier for the sleeve of the door leaf to be fitted onto the pivot.

[0013] Furthermore, a positioning hole is provided on the outer wall of the fixed one-way tooth, and the set screw passes through the first threaded hole of the door frame leaf and is placed in the positioning hole to fix the fixed one-way tooth in the bushing of the door frame leaf.

[0014] Furthermore, in order to make the rotating shaft more stable when rotating, a needle roller bearing is also provided in the bushing of the door frame page, and the needle roller bearing is rotatably connected to the rotating shaft.

[0015] Furthermore, a lower end cap is installed at the bottom of the bushing of the door frame leaf, and the lower end cap is provided with a through hole for a hex wrench to pass through. An upper end cap is installed at the top of the sleeve of the door leaf. A wear-resistant pad is provided between the bushing and the sleeve.

[0016] This utility model has a simple structure and ingenious design. It is easy to install and disassemble, and can achieve automatic closing without the need for a door closer. By using a hexagonal wrench to drive the movable one-way tooth to rotate the spring clip, the torque of the spring can be adjusted, thereby adjusting the automatic closing force. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded structural diagram of the door frame and door leaf of this utility model;

[0019] Figure 3 This is an exploded structural diagram of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the rotating shaft of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the spring clip of this utility model;

[0023] Figure 7 This is a schematic diagram of the connection structure between the fixed unidirectional tooth and the movable unidirectional tooth of this utility model;

[0024] Figure 8 This is a bottom view of the movable one-way tooth of this utility model;

[0025] Figure 9 This is a schematic diagram of the structure during the adjustment of this novel invention. Detailed Implementation

[0026] To better understand the purpose, function, and specific design of this utility model, the easily detachable spring hinge of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] like Figures 1-4 As shown, the easily detachable spring hinge of this utility model includes a door frame hinge 1 and a door leaf hinge 2. The door frame hinge 1 has a bushing 11 on one side. Inside the bushing 11 are sequentially arranged a fixed one-way tooth 12, a movable one-way tooth 13, a spring clip 14, a spring 15, and a rotating shaft 17. The fixed one-way tooth 12 is fixed to the inner bottom of the bushing 11 by a set screw 18. One end of the movable one-way tooth 13 engages with the fixed one-way tooth 12, and the other end of the movable one-way tooth 13 is connected to the spring clip 14. One end of the spring 15 is connected to the spring clip 14, and the other end of the spring 15 is connected to the rotating shaft 17. The upper part of the rotating shaft 17 extends out of the bushing 11. A sleeve 21 on one side of the door leaf hinge 2 is fitted onto the rotating shaft 17, thereby enabling quick installation and removal of the door leaf hinge 2.

[0028] like Figure 7 and Figure 9 As shown, the fixed one-way tooth 12 is provided with a through hole 122 through which a hexagonal wrench 3 can pass. The torque of the spring 15 can be adjusted by the hexagonal wrench 3, thereby adjusting the automatic door closing force.

[0029] Specifically, such as Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, one end of the movable one-way tooth 13 is provided with a hexagonal cavity 132 that matches and connects to the hexagonal wrench 3, and the other end of the movable one-way tooth 13 is provided with a protrusion 131. The protrusion 131 is inserted into the insertion hole 142 of the spring clip 14. The hexagonal cavity 132 of the movable one-way tooth 13 is connected to the through hole 122 of the fixed one-way tooth 12. The hexagonal wrench 3 passes through the through hole 122 of the fixed one-way tooth 12 and extends into the hexagonal cavity 132 of the movable one-way tooth 13. The hexagonal wrench 3 drives the movable one-way tooth 13 to rotate, thereby driving the spring clip 14 to rotate to adjust the torque of the spring 15.

[0030] The protrusion 131 is a hexagonal protrusion, and the insertion hole 142 on the spring clip 14 is a hexagonal insertion hole. Rotating the hexagonal wrench 3 causes the spring clip 14 to rotate with the movable one-way clip 13 to adjust the torque of the spring 15.

[0031] like Figures 3-5 As shown, the spring clip 14 has a first slot 141 at the end away from the insertion hole 142, and a second slot 174 is provided on the rotating shaft 17. One end of the spring 15 is engaged in the first slot 141, and the other end of the spring 15 is engaged in the second slot 174.

[0032] The rotating shaft 17 is provided with an annular groove 173. The set screw 18 passes through the second threaded hole 112 of the door frame 1 and is placed in the annular groove 173 of the rotating shaft 17 to prevent the rotating shaft 17 from disengaging from the bushing 11 of the door frame 1, so that the rotating shaft 17 can only rotate and cannot move up and down.

[0033] A hexagonal post 171 is provided in the middle of the pivot 17, and a hexagonal hole 211 is provided in the sleeve 21 to cooperate with the hexagonal post 171. A guide post 172 is provided at the upper end of the pivot 17 to facilitate the quick fitting of the sleeve 21 of the door leaf 2 onto the pivot 17.

[0034] The hexagonal post 171 has a bevel 1711 at one end near the guide post 172, which makes it easier for the sleeve 21 of the door leaf 2 to be fitted onto the pivot 17.

[0035] like Figure 3 and Figure 4 As shown, a positioning hole 121 is provided on the outer wall of the fixed one-way tooth 12. The set screw 18 passes through the first threaded hole 111 of the door frame page 1 and is placed in the positioning hole 121 to fix the fixed one-way tooth 12 in the bushing 11 of the door frame page 1.

[0036] To make the rotating shaft 17 more stable during rotation, a needle roller bearing 16 is also provided inside the bushing 11 of the door frame page 1, and the needle roller bearing 16 is rotatably connected to the rotating shaft 17.

[0037] A lower end cover 19 is installed at the bottom of the bushing 11 of the door frame leaf 1. The lower end cover 19 is provided with a through hole through which a hexagonal wrench 3 can pass. An upper end cover 22 is installed at the top of the sleeve 21 of the door leaf 2. A wear-resistant pad 113 is provided between the bushing 11 and the sleeve 21.

[0038] Door frame 1 is connected to the door frame with screws, and door leaf 2 is connected to the screen door with screws. During installation, the sleeve 21 of door leaf 2 is fitted onto the pivot 17 of door frame 1 to complete the installation of the screen door.

[0039] In use, the automatic door closing force can be adjusted using the hex wrench 3. To adjust, insert the hex wrench 3 into the hexagonal cavity 132 of the movable one-way tooth 13 through the through hole in the lower end cover 19 and the fixed one-way tooth 12. Rotate the hex wrench 3 clockwise to cause the movable one-way tooth 13 to rotate the spring clip 14, thereby increasing the torque of the spring 15. When it is necessary to release the torque of the spring 15, insert the hex wrench 3 into the hexagonal cavity 132 of the movable one-way tooth 13 through the through hole in the lower end cover 19 and the fixed one-way tooth 12, and push the movable one-way tooth 13 upwards to disengage it from the fixed one-way tooth 12. Rotate the hex wrench 3 counterclockwise to cause the movable one-way tooth 13 to rotate the spring clip 14, thereby releasing the torque of the spring 15.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A spring hinge that is easy to disassemble, comprising a door frame hinge and a door leaf hinge, characterized in that, A bushing is provided on one side of the door frame leaf. Inside the bushing, there are a fixed one-way tooth, a movable one-way tooth, a spring clip, a spring, and a rotating shaft in sequence. The fixed one-way tooth is fixed to the inner bottom of the bushing by a set screw. One end of the movable one-way tooth is engaged with the fixed one-way tooth, and the other end of the movable one-way tooth is connected to the spring clip. One end of the spring is connected to the spring clip, and the other end of the spring is connected to the rotating shaft. The upper part of the rotating shaft extends out of the bushing. The sleeve on one side of the door leaf is fitted onto the rotating shaft, thereby realizing the quick installation and removal of the door leaf. The fixed one-way tooth is provided with a through hole through which a hex wrench can pass. The torque of the spring can be adjusted by the hex wrench, thereby adjusting the automatic closing force.

2. The easily detachable spring hinge according to claim 1, characterized in that, One end of the movable one-way tooth is provided with a hexagonal cavity that matches and connects to a hexagonal wrench, and the other end of the movable one-way tooth is provided with a protrusion. The protrusion is inserted into the insertion hole of the spring clip. The hexagonal cavity of the movable one-way tooth is connected to the through hole of the fixed one-way tooth. The hexagonal wrench passes through the through hole of the fixed one-way tooth and extends into the hexagonal cavity of the movable one-way tooth. The hexagonal wrench drives the movable one-way tooth to rotate, thereby driving the spring clip to rotate to adjust the torque of the spring.

3. The easily detachable spring hinge according to claim 2, characterized in that, The protrusion is a hexagonal protrusion, and the insertion hole on the spring clip is a hexagonal insertion hole. Rotating the hexagonal wrench causes the spring clip to rotate with the movable one-way clip to adjust the torque of the spring.

4. The easily detachable spring hinge according to claim 3, characterized in that, The spring clip has a first slot at the end away from the insertion hole, and a second slot on the rotating shaft. One end of the spring is engaged in the first slot, and the other end of the spring is engaged in the second slot.

5. The easily detachable spring hinge according to claim 1 or 4, characterized in that, The rotating shaft is provided with an annular groove, and the set screw passes through the second threaded hole of the door frame leaf and is placed in the annular groove of the rotating shaft to prevent the rotating shaft from disengaging from the bushing of the door frame leaf.

6. The easily detachable spring hinge according to claim 5, characterized in that, A hexagonal post is provided in the middle of the pivot, and a hexagonal hole is provided in the sleeve to mate with the hexagonal post; a guide post is provided at the upper end of the pivot to facilitate the quick fitting of the sleeve of the door leaf onto the pivot.

7. The easily detachable spring hinge according to claim 6, characterized in that, The hexagonal post has a bevel at one end near the guide post, making it easier for the door leaf sleeve to be fitted onto the pivot.

8. The easily detachable spring hinge according to claim 1, characterized in that, The outer wall of the fixed one-way tooth is provided with a positioning hole. The set screw passes through the first threaded hole of the door frame leaf and is placed in the positioning hole to fix the fixed one-way tooth in the bushing of the door frame leaf.

9. The easily detachable spring hinge according to claim 1, characterized in that, To make the rotating shaft more stable during rotation, a needle roller bearing is also provided inside the bushing of the door frame, and the needle roller bearing is rotatably connected to the rotating shaft.

10. The easily detachable spring hinge according to claim 1, characterized in that, The bottom of the bushing of the door frame leaf is equipped with a lower end cover, which has a through hole for a hex wrench to pass through. The top of the sleeve of the door leaf is equipped with an upper end cover. A wear-resistant pad is provided between the bushing and the sleeve.

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