Door rotating shaft slow closing device

Abstract

The slow closing device comprises a first main body and a second main body, a hinge support arm is arranged at the end, close to the second main body, of the first main body, a mounting cavity is formed in the second main body, the end, away from the first main body, of the hinge support arm is hinged into the mounting cavity, and a slow closing mechanism matched with the hinge support arm to achieve slow closing is mounted in the mounting cavity. The slow closing effect of the door body can be achieved.

Description

Technical Field

[0001] This application relates to the field of doors, and particularly to a door hinge slow - closing device. Background Art

[0002] Slow - closing doors are applied in some public places, office places, and individual family houses. The main purpose is to slow down the process of the door closing automatically after it is opened, and minimize the back - and - forth swing of the door and even the occurrence of a huge sound caused by the relatively large return force of the door. Therefore, traditional slow - closing doors will design a slow - closing device at the hinge to achieve the slow - closing effect. Utility Model Content

[0003] In order to achieve the effect of slow - closing the door body.

[0004] A door hinge slow - closing device provided by this application adopts the following technical solutions:

[0005] A door hinge slow - closing device includes a first main body and a second main body. An articulated arm is provided at the end of the first main body close to the second main body. An installation cavity is provided inside the second main body. The end of the articulated arm away from the first main body is articulated in the installation cavity, and a slow - closing mechanism for cooperating with the articulated arm to achieve slow - closing is installed in the installation cavity.

[0006] In some embodiments, an articulated area and a buffer area are provided in the installation cavity and are connected. An articulated ear is provided in the articulated area. The end of the articulated arm extends into the articulated area and is articulated with the articulated ear. The slow - closing mechanism is arranged in the buffer area.

[0007] In some embodiments, the slow - closing mechanism includes a damping rod and a spring installed at intervals in the buffer area. The end of the driving shaft of the damping rod abuts against the end of the articulated arm located in the articulated area, and the end of the spring close to the articulated arm is installed on a spring top pin with a T - shaped cross - section. The end of the spring top pin away from the spring abuts against the end of the articulated arm located in the articulated area.

[0008] In some embodiments, at the end of the articulated arm facing the buffer area and corresponding to the damping rod and the spring respectively, there are provided cut surfaces or abutting grooves. The end of the driving shaft of the damping rod abuts against the cut surface or abutting groove at the corresponding position, and the end of the spring top pin away from the spring abuts against the cut surface or abutting groove at the corresponding position.

[0009] In some embodiments, a first partition wall is provided between the articulated area and the buffer area in the installation cavity. The first partition wall is provided with a first communication hole for the driving shaft of the damping rod to pass through and a second communication hole for the spring top pin to pass through.

[0010] In some embodiments, the spring ejector pin includes a pin body and an abutting ring. The abutting ring is arranged in the middle of the pin body, and the abutting ring is located on one side of the first partition wall in the buffer area. The end of the spring close to the spring ejector pin abuts against the abutting ring.

[0011] In some embodiments, a positioning groove is arranged on the first partition wall of the buffer area, and the abutting ring is located in the positioning groove.

[0012] In some embodiments, the second main body includes a main body seat and a cover. An installation cavity is formed between the main body seat and the cover. The hinge ear is installed on the cover. Opposite end faces of the main body seat and the cover at the buffer area are respectively provided with a first installation groove for installing the damping rod and a second installation groove for installing the spring.

[0013] In some embodiments, a third installation groove is arranged on the main body seat on the side far from the buffer area. A second partition wall is arranged between the third installation groove and the buffer area. A third communication hole is arranged at a position of the second partition wall corresponding to the second installation groove, and a fourth installation groove is arranged at a position of the third installation groove corresponding to the third communication hole.

[0014] In some embodiments, a spring support is arranged in the third installation groove, and both ends of the spring support are fixedly connected to the second partition walls on both sides of the third communication hole.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: Through the design of the slow closing mechanism, the door body can achieve the effect of slow closing. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a door hinge slow closing device according to an embodiment of the present application.

[0017] Figure 2 is an exploded structural diagram of a door hinge slow closing device according to an embodiment of the present application.

[0018] Figure 3 is a schematic structural diagram of a door hinge slow closing device according to an embodiment of the present application without the cover.

[0019] Figure 4 is a schematic structural diagram of the main body seat of a door hinge slow closing device according to an embodiment of the present application.

[0020] Figure 5 is a schematic structural diagram of the cover of a door hinge slow closing device according to an embodiment of the present application.

[0021] Description of reference numerals: 1. First main body; 2. Second main body; 3. Hinge arm; 4. Anti-collision pad; 5. Hinge ear; 6. Damping rod; 7. Spring; 8. First partition wall; 9. First communication hole; 10. Second communication hole; 11. Pin body; 12. Abutted ring; 13. Positioning groove; 14. Main body seat; 15. Cover; 16. First installation groove; 17. Second installation groove; 18. Third installation groove; 19. Second partition wall; 20. Third communication hole; 21. Fourth installation groove; 22. Spring support; 23. Cutting surface; 24. Abutting groove. Detailed implementation manners

[0022] The following further elaborates on the present application in conjunction with the attached Figures 1 to 5 drawings.

[0023] An embodiment of the present application discloses a slow-closing device for a door hinge shaft. Referring to Figure 1 、 2 , it includes a first main body 1 and a second main body 2. An end of the first main body 1 close to the second main body 2 is provided with a hinge arm 3. Generally, there is a certain gap between the corresponding ends of the first main body 1 and the second main body 2. In order to reduce the collision generated during the relative rotation of the first main body 1 and the second main body 2, an anti-collision pad 4 can be provided on the opposite end faces of the first main body 1 and the second main body 2. In this way, even if there is contact between the relative ends of the first main body 1 and the second main body 2, it will not cause wear of the parts between the two, and at the same time, there will be no harsh noise. In this embodiment, an installation cavity is provided inside the second main body 2. The end of the hinge arm 3 far from the first main body 1 is hinged inside the installation cavity, and a slow-closing mechanism for cooperating with the hinge arm 3 to achieve slow closing is installed inside the installation cavity; in order to facilitate the more orderly cooperation of the internal parts of the installation cavity, an articulated area and a buffer area are provided inside the installation cavity. An articulated ear 5 is provided in the articulated area, and the end of the hinge arm 3 extends into the articulated area and is hinged to the articulated ear 5, and the slow-closing mechanism is arranged in the buffer area.

[0024] Referring to Figure 2 、 3 , the slow-closing mechanism includes a damping rod 6 and a spring 7 installed at intervals in the buffer area. In this embodiment, there are two damping rods 6 and one spring 7. The two damping rods 6 are respectively located on opposite sides of the spring 7. Among them, the end of the driving shaft of the damping rod 6 abuts against the end of the hinge arm 3 located in the articulated area, and the end of the spring 7 close to the hinge arm 3 is installed on a spring 7 top pin with a T-shaped cross-section. The end of the spring 7 top pin far from the spring 7 abuts against the end of the hinge arm 3 located in the articulated area.

[0025] In this embodiment, in order to reduce the unnecessary part collision between the buffer mechanism and the hinge arm 3 and the neat layout of each component, and make the installation of parts more convenient and orderly, referring to Figure 4, a first partition wall 8 is provided between the hinge area and the buffer area in the installation cavity. The first partition wall 8 is provided with a first communication hole 9 for the drive shaft of the damping rod 6 to pass through and a second communication hole 10 for the spring 7 top pin to pass through. The spring 7 top pin includes a pin body 11 and an abutting ring 12. The abutting ring 12 is arranged in the middle of the pin body 11, and the abutting ring 12 is located on one side of the first partition wall 8 in the buffer area. The end of the spring 7 close to the spring 7 top pin abuts against the abutting ring 12. In this embodiment, in order to reduce the situation that the spring 7 top pin does not easily swing greatly towards the damping shaft during operation, a positioning groove 13 is provided on the first partition wall 8 in the buffer area, and the abutting ring 12 is located in the positioning groove 13.

[0026] Refer to Figure 4 , 5 , the second main body 2 includes a main body seat 14 and a cover 15. An installation cavity is formed between the main body seat 14 and the cover 15. The hinge ear 5 located in the hinge area can be installed on the cover 15. Of course, the hinge ear 5 can also be directly installed on the main body seat 14. Corresponding end faces of the main body seat 14 and the cover 15 at the buffer area are respectively provided with a first installation groove 16 for installing the damping rod 6 and a second installation groove 17 for installing the spring 7. The design of the first installation groove 16 and the second installation groove 17 can facilitate the positioning of parts and also has a certain guiding property.

[0027] Among them, a third installation groove 18 is provided on the side of the main body seat 14 away from the buffer area. A second partition wall 19 is provided between the third installation groove 18 and the buffer area. A third communication hole 20 is provided at a position of the second partition wall 19 corresponding to the second installation groove 17. A fourth installation groove 21 is provided at a position of the third installation groove 18 corresponding to the third communication hole 20; a spring support 22 is provided in the third installation groove 18, and both ends of the spring support 22 are fixedly connected to the second partition wall 19 on both sides of the third communication hole 20.

[0028] In this embodiment, in order to facilitate the generation of mutual pressing forces between the hinge arm 3 and the damping rod 6 and the spring 7, a cutting surface 23 or an abutting groove 24 is provided at the end of the hinge arm 3 facing the buffer area and corresponding to the damping rod 6 and the spring 7 respectively. The end of the drive shaft of the damping rod 6 abuts against the cutting surface 23 or the abutting groove 24 at the corresponding position, and the end of the spring 7 top pin away from the spring 7 abuts against the cutting surface 23 or the abutting groove 24 at the corresponding position.

[0029] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A door shaft slow closing device, comprising a first body (1) and a second body (2), characterized in that: The first body (1) is provided with an articulated support arm (3) at an end close to the second body (2); a mounting cavity is provided in the second body (2); an end of the articulated support arm (3) away from the first body (1) is hinged in the mounting cavity; a slow-closing mechanism for cooperating with the articulated support arm (3) to achieve slow closing is installed in the mounting cavity; a connected articulation area and a buffer zone are provided in the mounting cavity; an articulation ear (5) is provided in the articulation area; an end of the articulation arm (3) extends to the articulation area and is connected to the articulation ear (5) The ear (5) is hinged, and the slow closing mechanism is arranged in the buffer zone; the slow closing mechanism comprises a damping rod (6) and a spring (7) installed at intervals in the buffer zone, the driving shaft end of the damping rod (6) is mounted on the end of the hinged support arm (3) located in the hinge zone, the end of the spring (7) close to one side of the hinged support arm (3) is mounted on a spring (7) top pin with a T-shaped cross section, and the end of the spring (7) top pin away from the spring (7) is mounted on the end of the hinged support arm (3) located in the hinge zone.

2. A door shaft slow closing device according to claim 1, characterized in that: The hinged support arm (3) is provided with a cut surface (23) or an abutment groove (24) at the end facing the buffer zone and at positions corresponding to the damping rod (6) and the spring (7), respectively; the end of the driving shaft of the damping rod (6) is disposed on the cut surface (23) or the abutment groove (24) at the corresponding position; and the end of the spring (7) push pin away from the spring (7) is disposed on the cut surface (23) or the abutment groove (24) at the corresponding position.

3. A door shaft slow closing device according to claim 1, characterized in that: A first isolation wall (8) is arranged in the installation cavity between the hinge area and the buffer area. The first isolation wall (8) is provided with a first connecting hole (9) for the driving shaft of the damping rod (6) to pass through, and a second connecting hole (10) for the ejector pin of the spring (7) to pass through.

4. A door shaft slow closing device according to claim 1, characterized in that: The spring (7) push pin comprises a pin body (11) and an abutment ring (12). The abutment ring (12) is arranged in the middle of the pin body (11), and the abutment ring (12) is located on one side of the first isolation wall (8) in the buffer zone. The end of the spring (7) close to the spring (7) push pin is pushed against the abutment ring (12).

5. A door shaft slow closing device according to claim 4, characterized in that: A positioning groove (13) is provided on the first isolation wall (8) of the buffer zone, and the abutment ring (12) is located in the positioning groove (13).

6. A door shaft slow closing device according to claim 1, characterized in that: The second main body (2) comprises a main body seat (14) and a cover (15); a mounting cavity is formed between the main body seat (14) and the cover (15); the hinged ear (5) is mounted on the cover (15); and opposite end surfaces of the main body seat (14) and the cover (15) at the buffer zone are respectively provided with a first mounting groove (16) for mounting the damping rod (6) and a second mounting groove (17) for mounting the spring (7).

7. A door shaft slow closing device according to claim 6, characterized in that: A third mounting groove (18) is provided on the main body seat (14) at a side away from the buffer zone, a second isolation wall (19) is provided between the third mounting groove (18) and the buffer zone, a third connecting hole (20) is provided at a position of the second isolation wall (19) corresponding to the second mounting groove (17), and a fourth mounting groove (21) is provided at a position in the third mounting groove (18) corresponding to the third connecting hole (20).

8. A door shaft slow closing device according to claim 7, characterized in that: A spring support (22) is arranged in the third installation groove (18), and two ends of the spring support (22) are respectively fixedly connected to the second isolation walls (19) on both sides of the third connecting hole (20).

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