Automatic door closing device
Through the synergistic effect and structural optimization of multiple sets of torsion springs, the problems of laborious operation and short service life caused by the deformation of the torsion spring of the existing automatic door closed device are solved, and the smooth closing and service life of the door is achieved, reducing noise and maintenance costs are achieved. .
Patent Information
- Application Number
- CN202420874277.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-25
AI Technical Summary
When the existing automatic door closed device is opened to a certain level, the torsion spring deformation is large, which causes user effort to operate, affects user experience, and accelerates torsion spring fatigue, shortens service life, and may cause door-to-door frame collision and noise problems.
An automatic door-closing device is designed, using multiple sets of torsion springs to drive the rotation of the torsion spring through the movable rod and the rotor, reducing fatigue and deformation of the torsion spring, and optimizing the smoothness of the operation through the spherical connector and the limit ring groove. , ensure the door is closed smoothly.
The door is closed smoothly, which reduces fatigue and deformation of the torsion spring, extends the service life of the door closer, reduces noise and maintenance costs, and improves operating reliability.
Smart Images
Figure CN222314921U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automatic door closing, in particular to an automatic door closing device. Background Art
[0002] The automatic door closing device, also known as the door closer, is usually installed on the upper part of the door leaf. It uses a torsion spring or spring mechanism. When the door is opened, it can be compressed and then released to automatically close the door. It has the same function as a spring door. It can ensure that the door is accurately and promptly closed to the initial position after being opened. It is mainly used in commercial and public buildings, but it is also used at home. It is an indispensable executive part of modern building intelligent management.
[0003] When the existing door closer is opened to a certain extent, the torsion spring will be deformed to a large extent, and it will be more laborious for the user to continue to open the door, which will not feel good and affect the user experience. At the same time, the torsion spring will fatigue faster, thus shortening the service life of the door closer and increasing the cost of maintenance and replacement. The large deformation of the torsion spring will generate a large closing force, causing the door to collide with the door frame when closing, which may cause damage and generate a large noise. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide an automatic door closing device, which can realize the stable closing of the door, reduce the fatigue and deformation of the torsion spring and prolong the service life.
[0005] To solve the above technical problems, the utility model provides an automatic door closing device, including a door closer body and a slide plate, the door closer body including a base and an outer shell fixed on the base, a fixed shaft is provided in the outer shell, a first rotating wheel is provided on the fixed shaft, an inner shell is provided in the outer shell, the inner shell is fixedly connected to the first rotating wheel, a first torsion spring is also provided in the outer shell, one end of the first torsion spring is fixed on the first rotating wheel, and the other end is fixed to one end of the outer shell; a second rotating wheel is provided in the inner shell, a movable rod is provided on the second rotating wheel, an end of the movable rod away from the door closer body is slidably connected to the slide plate, a second torsion spring is also provided in the inner shell, one end of the second torsion spring is installed on the second rotating wheel, and the other end is installed on one end of the inner shell, and the movable rod drives the first torsion spring and the second torsion spring to rotate in turn to reduce fatigue and deformation of the first torsion spring and the second torsion spring.
[0006] The outer shell is provided with a movable groove for allowing the movable rod to rotate, and the inner shell is provided with a first limiting ring groove for limiting the rotation range of the movable rod.
[0007] A second limiting ring groove is provided on the first rotating wheel, and one end of the first torsion spring is inserted into the second limiting ring groove.
[0008] A third torsion spring is further provided at one end of the second rotating wheel away from the second torsion spring. One end of the third torsion spring is mounted on the second rotating wheel, and the other end is mounted at one end of the inner housing away from the second torsion spring.
[0009] The second rotating wheel is provided with a through hole, and one end of the second torsion spring and one end of the third torsion spring are inserted into the through hole.
[0010] A spherical connector is provided at one end of the movable rod away from the door closer body, a corresponding sliding groove is provided on the sliding plate, and the spherical connector is slidably connected in the sliding groove.
[0011] The first limiting ring groove and the second limiting ring groove are both 45° ring grooves.
[0012] A plurality of insertion holes are arranged on the outer side of the second rotating wheel, and the movable rods are inserted into the insertion holes.
[0013] The first rotating wheel, the first torsion spring, the inner housing, the second torsion spring, the second rotating wheel and the third torsion spring are all arranged on the fixed shaft.
[0014] A screw hole is provided at one end of the fixed shaft, and a corresponding mounting hole is provided at one end of the outer shell. The screw hole and the mounting hole are connected by screws.
[0015] When the utility model is used, the slide plate is installed on the door, and the door closer is installed on one side of the door. When the door is opened, the movable rod moves along the slide plate, driving the second rotating wheel to rotate, and the second rotating wheel drives the second torsion spring and the third torsion spring to rotate at the same time. The stretching of the second torsion spring and the third torsion spring provides a closing force. When the movable rod rotates to the edge of the first limiting ring groove, the second torsion spring and the third torsion spring stop rotating, and the movable rod causes the entire inner shell body to start rotating. At this time, the first rotating wheel at one end of the inner shell body starts to transmit, and the first torsion spring on the first rotating wheel is also stretched at the same time, which provides another part of the closing force. Until the door stops, the first torsion spring starts to reset first, and then the second torsion spring and the third torsion spring also start to reset, so that the door is automatically closed. In this process, the spherical connecting piece on the movable rod slides in the sliding groove, so that the operation of the door closer is smoother and more reliable.
[0016] The beneficial effects brought by the utility model are:
[0017] The utility model realizes the stable closing of the door through the closing force provided by the torsion spring system, and reduces the noise generated by the collision.
[0018] The utility model reduces fatigue and deformation of the torsion springs and prolongs the service life of the door closer through the coordinated action of multiple groups of torsion springs.
[0019] The utility model has a relatively simple structure and is relatively easy to install and maintain, thus saving maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of the utility model.
[0021] Figure 2 It is a cross-sectional view of the utility model.
[0022] Figure 3 It is a structural schematic diagram of the first rotating wheel of the utility model.
[0023] Figure 4 It is a structural schematic diagram of the second rotating wheel of the utility model.
[0024] In the figure: 1. door closer body; 2. slide plate; 3. base; 4. outer shell; 5. fixed shaft; 6. first rotating wheel; 7. inner shell; 8. first torsion spring; 9. second rotating wheel; 10. movable rod; 11. second torsion spring; 12. movable groove; 13. first limiting ring groove; 14. second limiting ring groove; 15. third torsion spring; 16. through hole; 17. spherical connector; 18. slide groove; 19. jack; 20. screw hole; 21. mounting hole; 22. screw. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.
[0026] according to Figure 1 and Figure 2 As shown, an automatic door closing device of the utility model comprises a door closer body 1 and a slide plate 2. The door closer body 1 is composed of a base 3 and an outer shell 4 fixed on the base 3. A fixed shaft 5 is provided in the outer shell 4, and a first rotating wheel 6 is installed on the fixed shaft 5. An inner shell 7 is fixedly connected to the first rotating wheel 6, and a second rotating wheel 9 is also provided in the inner shell 7. In addition, a first torsion spring 8 is also provided in the outer shell 4, one end of which is installed on the first rotating wheel 6, and the other end is installed on one end of the outer shell 4. A second torsion spring 11 is also provided in the inner shell 7, one end of which is installed on the second rotating wheel 9, and the other end is installed on one end of the inner shell 7. A movable rod 10 is connected to the second rotating wheel 9, and is slidably connected to one end of the door closer body 1 through the slide plate 2. When the door is opened, the movable rod 10 first drives the first torsion spring 8 to rotate a certain angle, and then drives the entire inner shell 7 to drive the second torsion spring 11 to rotate. Such a structure helps to reduce fatigue and deformation of the first torsion spring 8 and the second torsion spring 11, and utilizes the synergistic effect of the torsion springs to achieve a stable and reliable door closing function, while extending the service life of the door closer.
[0027] according to Figure 3 and Figure 4 As shown, the outer shell 4 is provided with a movable groove 12 that allows the movable rod 10 to rotate, so that the movable rod 10 can move therein to achieve control of the door. At the same time, the inner shell 7 is provided with a first limiting ring groove 13 that limits the rotation range of the movable rod 10. The function of this limiting ring groove is to limit the rotation range of the movable rod 10 to ensure that the second torsion spring 11 stops when it rotates to a certain range. On the first rotating wheel 6, a second limiting ring groove 14 is provided, and one end of the first torsion spring 8 is inserted into this ring groove. The first limiting ring groove 13 and the second limiting ring groove 14 are both 45° ring grooves.
[0028] A third torsion spring 15 is further provided at one end of the second rotating wheel 9 away from the second torsion spring 11. One end of the third torsion spring 15 is mounted on the second rotating wheel 9, and the other end is mounted on the end of the inner housing 7 away from the second torsion spring 11, so that the third torsion spring 15 can work in conjunction with the second torsion spring 11 to provide additional closing force and ensure the smooth operation of the door closing device. A through hole 16 is provided on the second rotating wheel 9, and one end of the second torsion spring 11 and the third torsion spring 15 are inserted into the through hole 16, so that the second rotating wheel 9 can drive the second torsion spring 11 and the third torsion spring 15 to rotate synchronously, providing a more balanced closing force.
[0029] The end of the movable rod 10 away from the door closer body 1 is provided with a spherical connector 17, and the slide plate 2 is provided with a corresponding slide groove 18. The spherical connector 17 is slidably connected in the slide groove 18, which can effectively reduce friction and resistance, thereby making the operation of the automatic door closing device smoother and more reliable. Such a structure also helps to improve the durability of the device because it reduces the wear between the connecting parts.
[0030] A plurality of insertion holes 19 are arranged outside the second rotating wheel 9, and the movable rod 10 is inserted into the insertion holes 19. A plurality of insertion points are provided for the movable rod 10, and different positions of the insertion holes 19 can be selected as needed.
[0031] The first rotating wheel 6 , the first torsion spring 8 , the inner housing 7 , the second torsion spring 11 , the second rotating wheel 9 and the third torsion spring 15 are all disposed on the fixed shaft 5 .
[0032] A screw hole 20 is provided at one end of the fixing shaft 5 , and a corresponding mounting hole 21 is provided at one end of the outer shell 4 . The screw hole 20 and the mounting hole 21 are connected by screws 22 , so as to be firmly fixed on the base 3 .
[0033] When the utility model is used, the slide plate 2 is installed on the door, and the door closer is installed on one side of the door. When the door is opened, the movable rod 10 moves along the slide plate 2, driving the second rotating wheel 9 to rotate, and the second rotating wheel 9 drives the second torsion spring 11 and the third torsion spring 15 to rotate at the same time. The stretching of the second torsion spring 11 and the third torsion spring 15 provides a closing force. When the movable rod 10 rotates to the edge of the first limiting ring groove 13, the second torsion spring 11 and the third torsion spring 15 stop rotating, and the movable rod 10 causes the entire inner shell 7 to start rotating. At this time, the first rotating wheel 6 at one end of the inner shell 7 starts to transmit, and the first torsion spring 8 on the first rotating wheel 6 is also stretched, which provides another part of the closing force. Until the door stops, the first torsion spring 8 starts to reset first, and then the second torsion spring 11 and the third torsion spring 15 also start to reset, so that the door is automatically closed. In this process, the spherical connector 17 on the movable rod 10 slides in the slide groove 18, making the operation of the door closer smoother and more reliable.
[0034] The beneficial effects brought by the utility model are:
[0035] The utility model realizes the stable closing of the door through the closing force provided by the torsion spring system, and reduces the noise generated by the collision.
[0036] The utility model reduces fatigue and deformation of the torsion springs and prolongs the service life of the door closer through the coordinated action of multiple groups of torsion springs.
[0037] The utility model has a relatively simple structure and is relatively easy to install and maintain, thus saving maintenance costs and time.
[0038] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.
Claims
1. An automatic door closing device, comprising a door closer body and a slide plate, wherein the door closer body comprises a base and an outer shell fixed to the base, wherein a fixed shaft is disposed in the outer shell, and a first rotating wheel is disposed on the fixed shaft, wherein: An inner shell is provided in the outer shell, and the inner shell is fixedly connected to the first rotating wheel. A first torsion spring is also provided in the outer shell, and one end of the first torsion spring is fixed to the first rotating wheel, and the other end is fixed to one end of the outer shell; a second rotating wheel is provided in the inner shell, and a movable rod is provided on the second rotating wheel, and one end of the movable rod away from the door closer body is slidably connected to the slide plate, and a second torsion spring is also provided in the inner shell, and one end of the second torsion spring is mounted on the second rotating wheel, and the other end is mounted on one end of the inner shell, and the movable rod drives the first torsion spring and the second torsion spring to rotate in turn to reduce fatigue and deformation of the first torsion spring and the second torsion spring.
2. An automatic door closing device according to claim 1, characterized in that: The outer shell is provided with a movable groove for allowing the movable rod to rotate, and the inner shell is provided with a first limiting ring groove for limiting the rotation range of the movable rod.
3. An automatic door closing device according to claim 2, characterized in that: A second limiting ring groove is provided on the first rotating wheel, and one end of the first torsion spring is inserted into the second limiting ring groove.
4. The automatic door closing device according to claim 1, characterized in that: A third torsion spring is further provided at one end of the second rotating wheel away from the second torsion spring. One end of the third torsion spring is mounted on the second rotating wheel, and the other end is mounted at one end of the inner housing away from the second torsion spring.
5. The automatic door closing device according to claim 1, characterized in that: The second rotating wheel is provided with a through hole, and one end of the second torsion spring and one end of the third torsion spring are inserted into the through hole.
6. The automatic door closing device according to claim 1, characterized in that: A spherical connector is provided at one end of the movable rod away from the door closer body, a corresponding sliding groove is provided on the sliding plate, and the spherical connector is slidably connected in the sliding groove.
7. The automatic door closing device according to claim 3, characterized in that: The first limiting ring groove and the second limiting ring groove are both 45° ring grooves.
8. The automatic door closing device according to claim 1, characterized in that: A plurality of insertion holes are arranged on the outer side of the second rotating wheel, and the movable rods are inserted into the insertion holes.
9. The automatic door closing device according to claim 4, characterized in that: The first rotating wheel, the first torsion spring, the inner housing, the second torsion spring, the second rotating wheel and the third torsion spring are all arranged on the fixed shaft.
10. The automatic door closing device according to claim 1, characterized in that: A screw hole is provided at one end of the fixed shaft, and a corresponding mounting hole is provided at one end of the outer shell. The screw hole and the mounting hole are connected by screws.