Improved structure of mute slow-descending floor spring

Abstract

The utility model discloses an improved structure of a mute slow-descending floor spring, and relates to the technical field of floor springs. The floor spring comprises a floor spring body, a cover plate is arranged at the top of the floor spring body, a noise reduction mechanism is arranged on one side of the top of the cover plate, and positioning mechanisms are fixedly connected to the front end and the rear end of the floor spring body. The mute bearing is arranged on the surface of the positioning column, when the door body rotates around the positioning column, the mute bearing can effectively reduce noise generated by friction, compared with a traditional floor spring, noise pollution generated when the door body is opened and closed is greatly reduced, the boss and the flow guide groove are designed in the positioning groove, the lubricating oil can be guided and stored, and the service life of the door body is prolonged. And an isolating ring at the bottom of the rotating table is matched with a positioning groove, so that dust and other impurities can be prevented from entering the rotating table, normal operation of internal parts is guaranteed, and the stability of noise reduction performance is maintained.

Description

Technical Field

[0001] This utility model belongs to the field of floor spring technology, and in particular relates to an improved structure of a silent, slow-descent floor spring. Background Technology

[0002] Floor springs, as a type of door closing device installed underground, are widely used in the field of building doors and windows. They play a key role in realizing the automatic closing of doors. Their working principle is based on the internal torsion spring energy storage and hydraulic buffer mechanism. When the door is pushed open, the door hinge drives the torsion spring to rotate, and the torsion spring undergoes elastic deformation to store energy. During the door closing process, the torsion spring releases energy, drives the door hinge to rotate, controls the door closing speed, and realizes a smooth closing action.

[0003] When the door opens and closes, friction between mechanical parts and rapid door return can generate significant noise. In environments with high noise control requirements, such as hospitals, schools, libraries, and high-end office buildings, this can seriously affect people's normal work, study, and life. During installation, the fixing method between the cover plate and the floor spring body is relatively simple and lacks a convenient and stable positioning structure. This not only increases the difficulty of installation but may also cause the cover plate to loosen during use, affecting the overall performance of the floor spring.

[0004] To address these issues, we offer an improved structure for a silent, slow-descent floor spring. Utility Model Content

[0005] The purpose of this utility model is to provide an improved structure for a silent, slow-closing floor spring. Through the cooperation of a noise reduction mechanism and a positioning mechanism, it solves the problem in the prior art that when the door is opened and closed, a lot of noise is generated due to friction between mechanical parts and rapid return of the door. At the same time, the cover plate and the floor spring body lack a convenient positioning structure.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to an improved structure for a silent, slow-closing floor spring, comprising a floor spring body, a cover plate on the top of the floor spring body, a noise reduction mechanism on one side of the top of the cover plate, positioning mechanisms fixedly connected to the front and rear ends of the floor spring body, the noise reduction mechanism including a positioning post, the bottom of the positioning post penetrating into the inner cavity of the floor spring body, a silent bearing sleeved on the surface of the positioning post, a positioning groove formed on one side of the top of the cover plate, the bottom of the silent bearing extending into the inner cavity of the positioning groove, a boss fixedly connected to the inner cavity of the positioning groove, a guide groove formed on the top of the boss, a rotating platform fixedly connected to the top of the positioning post, an isolation ring fixedly connected to the bottom of the rotating platform, the isolation ring being adapted to the positioning groove, and the top of the rotating platform being fixedly... The door is connected with a positioning pin, and a positioning groove adapted to the positioning post is opened on one side of the top of the cover plate. The positioning groove is a regular circle in shape. The bottom of the silent bearing extends into the inner cavity of the positioning groove to achieve effective positioning. Multiple radially distributed guide grooves are opened on the top of the boss. The function of the guide grooves is to effectively guide the lubricating oil to evenly cover the contact area between the positioning post and the silent bearing after the lubricating oil is applied, further reducing friction and improving the silent effect. The low friction characteristics of the silent bearing and its precise fit with the positioning post and positioning groove greatly reduce the friction noise generated by the door during opening and closing. The effective guidance of lubricating oil by the boss and guide grooves further reduces the friction between components, creating a quiet operating environment for users and greatly reducing the disturbance to the patient's rest.

[0008] The present invention is further configured such that the positioning mechanism includes a housing, one side of which is fixedly connected to the floor spring body. Positioning blocks are fixedly connected to the front and rear ends of the bottom of the cover plate. A rotating rod is movably connected to the inner cavity of the housing via bearings. A gear is fixedly connected to the surface of the rotating rod. Gear plates mesh with the top and bottom of the gear. A movable plate is fixedly connected to one side of the gear plate. A locking block is fixedly connected to one side of the movable plate. The side of the locking block away from the movable plate extends to the outside of the housing, and one side of the locking block penetrates into the inner cavity of the positioning block. This achieves stable positioning of the cover plate. By rotating the handwheel, the movement of the rotating rod, gear, and gear plate is controlled, allowing the locking block to separate from the positioning block, thus facilitating quick and easy opening of the cover plate for adjustment and maintenance of the internal structure of the floor spring body.

[0009] The present invention is further configured such that a return spring is fixedly connected to the top and bottom of one side of the movable plate, and one side of the return spring is fixedly connected to the inner wall of the outer shell by welding, so as to provide a continuous return force for the locking block and achieve a stable positioning effect.

[0010] The present invention is further configured such that a sliding rod is fixedly connected to the inner cavity of the outer shell, and a sliding sleeve is slidably connected to the surface of the sliding rod. One side of the sliding sleeve is fixedly connected to the toothed plate, and the other side of the sliding sleeve is fixedly connected to the toothed plate, providing stable guidance for the movement of the toothed plate and ensuring the accuracy and stability of the movement of the locking block.

[0011] The present invention is further configured such that one side of the rotating rod penetrates the inner cavity of the outer shell and extends to the outside of the outer shell, and a handwheel is fixedly connected to the surface of the rotating rod. The surface of the handwheel is designed with anti-slip texture to facilitate the operator to rotate the rotating rod and control the movement of the locking block.

[0012] The present invention is further configured such that a connecting rod is sleeved on the surface of the positioning pin, and a limiting seat is provided on one side of the top of the connecting rod. One side of the limiting seat is threadedly connected to the connecting rod by a screw. By setting the connecting rod and the limiting seat, the bottom of the door can be supported, the supporting force of the positioning pin can be shared, and the stability of the positioning pin when it rotates can be ensured.

[0013] The present invention is further provided that the bottom of the silent bearing is provided with a sealing cover, the sealing cover is sleeved on the surface of the positioning post, and the silent bearing can be sealed by the sealing cover to prevent external dust from entering and affecting its silent effect.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model, by placing a silent bearing on the surface of the positioning column, effectively reduces the noise generated by friction when the door rotates around the positioning column. Compared with traditional floor springs, it greatly reduces noise pollution when the door is opened and closed. The protrusion and guide groove design in the positioning groove can guide and store lubricating oil, further improving the silent effect and providing users with a quieter and more comfortable environment. The isolation ring at the bottom of the rotating table is adapted to the positioning groove, which can prevent dust and other impurities from entering, ensuring the normal operation of internal components and maintaining the stability of noise reduction performance.

[0016] 2. This utility model utilizes the cooperation of a rotating rod, gear, and toothed plate. When the rotating rod is rotated, the gear drives the toothed plate to move, which in turn causes the moving plate and the locking block to move. After the locking block moves out of the inner cavity of the positioning block, the cover plate can be easily opened to adjust and maintain the internal structure of the floor spring body. Compared with the complicated disassembly method of traditional floor springs, this greatly improves the convenience of operation, reduces maintenance costs, and saves maintenance time. Even non-professionals can easily complete the operation after simple training. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a three-dimensional diagram of an improved structure for a silent, slow-descent floor spring.

[0019] Figure 2 This is a bottom-view perspective view of an improved structure for a silent, slow-descent floor spring.

[0020] Figure 3 This is a cross-sectional view of the outer shell in an improved structure of a silent, slow-descent floor spring.

[0021] Figure 4 This is a three-dimensional view of the cover plate in an improved structure of a silent, slow-descent floor spring.

[0022] Figure 5 This is a three-dimensional view of a silent bearing in an improved structure of a silent, slow-descent floor spring.

[0023] In the attached diagram: 1. Floor spring body; 2. Cover plate; 3. Noise reduction mechanism; 301. Positioning post; 302. Silent bearing; 303. Positioning groove; 304. Boss; 305. Guide groove; 306. Rotary table; 307. Isolation ring; 308. Positioning pin; 4. Positioning mechanism; 401. Outer shell; 402. Positioning block; 403. Rotating rod; 404. Gear; 405. Tooth plate; 406. Moving plate; 407. Locking block; 5. Return spring; 6. Slide rod; 7. Slide sleeve; 8. Handwheel; 9. Connecting rod; 10. Limit seat; 11. Sealing cover. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figures 1-5 This utility model is an improved structure for a silent, slow-closing floor spring, including a floor spring body 1, a cover plate 2 on the top of the floor spring body 1, a noise reduction mechanism 3 on one side of the top of the cover plate 2, and positioning mechanisms 4 fixedly connected to the front and rear ends of the floor spring body 1. The noise reduction mechanism 3 includes a positioning post 301, the bottom of which extends through the inner cavity of the floor spring body 1, a silent bearing 302 sleeved on the surface of the positioning post 301, a positioning groove 303 on one side of the top of the cover plate 2, the bottom of which extends into the inner cavity of the positioning groove 303, a boss 304 fixedly connected to the inner cavity of the positioning groove 303, a guide groove 305 on the top of the boss 304, a rotating platform 306 fixedly connected to the top of the positioning post 301, an isolation ring 307 fixedly connected to the bottom of the rotating platform 306, the isolation ring 307 being adapted to the positioning groove 303, and a positioning pin 308 fixedly connected to the top of the rotating platform 306.

[0027] Specifically: A positioning groove 303 adapted to the positioning post 301 is provided on one side of the top of the cover plate 2. The positioning groove 303 is a regular circle. The bottom of the silent bearing 302 extends into the inner cavity of the positioning groove 303 to achieve effective positioning. Multiple radially distributed guide grooves 305 are provided on the top of the boss 304. The function of the guide grooves 305 is to effectively guide the lubricating oil to evenly cover the contact area between the positioning post 301 and the silent bearing 302 after the lubricating oil is applied, further reducing friction and improving the silent effect. The low friction characteristics of the silent bearing 302 and its precise cooperation with the positioning post 301 and the positioning groove 303 greatly reduce the friction noise generated by the door during opening and closing. The effective guidance of the lubricating oil by the boss 304 and the guide grooves 305 further reduces the friction between the parts, creating a quiet operating environment for users and greatly reducing the interference with the patient's rest.

[0028] Example 2

[0029] Please see Figures 1-5 Based on Embodiment 1, the positioning mechanism 4 includes a housing 401. One side of the housing 401 is fixedly connected to the floor spring body 1. Positioning blocks 402 are fixedly connected to the front and rear ends of the bottom of the cover plate 2. A rotating rod 403 is movably connected to the inner cavity of the housing 401 via a bearing. A gear 404 is fixedly connected to the surface of the rotating rod 403. A toothed plate 405 meshes with the top and bottom of the gear 404. A moving plate 406 is fixedly connected to one side of the toothed plate 405. A locking block 407 is fixedly connected to one side of the moving plate 406. The side of the locking block 407 away from the moving plate 406 extends to the outside of the housing 401. One side of the locking block 407 penetrates into the inner cavity of the positioning block 402. A return spring 5 is fixedly connected to both the top and bottom. One side of the return spring 5 is fixedly connected to the inner wall of the outer shell 401. A slide rod 6 is fixedly connected to the inner cavity of the outer shell 401. A slide sleeve 7 is slidably connected to the surface of the slide rod 6. One side of the slide sleeve 7 is fixedly connected to the toothed plate 405. One side of the rotating rod 403 passes through the inner cavity of the outer shell 401 and extends to the outside of the outer shell 401. A handwheel 8 is fixedly connected to the surface of the rotating rod 403. A connecting rod 9 is sleeved on the surface of the positioning pin 308. A limit seat 10 is provided on one side of the top of the connecting rod 9. One side of the limit seat 10 is threadedly connected to the connecting rod 9 by a screw. A sealing cover 11 is provided at the bottom of the silent bearing 302. The sealing cover 11 is sleeved on the surface of the positioning post 301.

[0030] Specifically: the side of the locking block 407 furthest from the moving plate 406 extends to the outside of the outer casing 401, and one side of the locking block 407 can penetrate into the inner cavity of the positioning block 402, achieving stable positioning of the cover plate 2. By rotating the handwheel 8, the movement of the rotating rod 403, gear 404, and toothed plate 405 is controlled, realizing the separation of the locking block 407 from the positioning block 402, so as to easily and quickly open the cover plate 2 and adjust and maintain the internal structure of the floor spring body 1. One side of the return spring 5 is fixedly connected to the inner wall of the outer casing 401 by welding, providing a continuous return force for the locking block 407, achieving stable positioning. The sliding sleeve 7 is fixedly connected to the toothed plate 405 on one side, providing a stable guide for the movement of the toothed plate 405 and ensuring the accuracy and smoothness of the movement of the locking block 407. The handwheel 8 has anti-slip texture on its surface, making it convenient for the operator to rotate the rotating rod 403 to control the movement of the locking block 407. The connecting rod 9 and the limit seat 10 can support the bottom of the door body and share the supporting force of the positioning pin 308, ensuring the stability of the positioning pin 308 when rotating. The sealing cover 11 can seal the silent bearing 302 to prevent external dust from entering and affecting its silent effect.

[0031] The working principle of this utility model is as follows: the positioning groove 303 is adapted to the positioning column 301, and the bottom of the silent bearing 302 is embedded therein, so as to achieve precise positioning and stable rotation. After applying lubricating oil, as the door rotates, the lubricating oil is evenly covered by the centrifugal force and the force generated by the movement of the door through the guide groove 305 at the contact part between the positioning column 301 and the silent bearing 302, further reducing the friction between the two and minimizing friction noise, creating a quiet environment for users. Especially in noise-sensitive places, such as hospital wards, it can greatly reduce the interference to patients' rest.

[0032] When it is necessary to open the cover plate 2, the operator turns the handwheel 8, which drives the rotating rod 403 to rotate. The rotating rod 403 drives the gear 404 fixed on the surface to rotate synchronously. The gear 404 meshes with the toothed plates 405 at the top and bottom. Due to the rotation of the gear 404, the toothed plates 405 move smoothly in the horizontal direction under the guidance of the sliding rod 6 and the sliding sleeve 7. The moving plate 406 connected to one side of the toothed plates 405 moves accordingly, thereby driving the locking block 407 to move out of the inner cavity of the positioning block 402, realizing the separation of the locking block 407 from the positioning block 402. At this time, the cover plate 2 can be opened conveniently and quickly.

[0033] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to specific implementation methods. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. An improved structure for a silent, slow-closing floor spring, comprising a floor spring body (1), characterized in that: The top of the floor spring body (1) is provided with a cover plate (2), and a noise reduction mechanism (3) is provided on one side of the top of the cover plate (2). The front end and rear end of the floor spring body (1) are both fixedly connected with positioning mechanisms (4). The noise reduction mechanism (3) includes a positioning post (301), the bottom of which extends through the inner cavity of the floor spring body (1). A silent bearing (302) is fitted on the surface of the positioning post (301). A positioning groove (303) is provided on one side of the top of the cover plate (2). The bottom of the silent bearing (302) extends into the inner cavity of the positioning groove (303). A boss (304) is fixedly connected to the inner cavity of the positioning groove (303). A guide groove (305) is provided on the top of the boss (304). A rotating platform (306) is fixedly connected to the top of the positioning post (301). An isolation ring (307) is fixedly connected to the bottom of the rotating platform (306). The isolation ring (307) is adapted to the positioning groove (303). A positioning pin (308) is fixedly connected to the top of the rotating platform (306).

2. The improved structure of a silent, slow-descent floor spring according to claim 1, characterized in that: The positioning mechanism (4) includes a housing (401), one side of which is fixedly connected to the floor spring body (1). The front and rear ends of the bottom of the cover plate (2) are fixedly connected to positioning blocks (402). The inner cavity of the housing (401) is movably connected to a rotating rod (403) via a bearing. A gear (404) is fixedly connected to the surface of the rotating rod (403). The top and bottom of the gear (404) are meshed with toothed plates (405). A moving plate (406) is fixedly connected to one side of the toothed plate (405). A locking block (407) is fixedly connected to one side of the moving plate (406). The side of the locking block (407) away from the moving plate (406) extends to the outside of the housing (401). One side of the locking block (407) penetrates into the inner cavity of the positioning block (402).

3. The improved structure of a silent, slow-descent floor spring according to claim 2, characterized in that: A return spring (5) is fixedly connected to the top and bottom of one side of the movable plate (406), and one side of the return spring (5) is fixedly connected to the inner wall of the outer shell (401).

4. The improved structure of a silent, slow-descent floor spring according to claim 2, characterized in that: The inner cavity of the outer shell (401) is fixedly connected to a slide rod (6), and a slide sleeve (7) is slidably connected to the surface of the slide rod (6). One side of the slide sleeve (7) is fixedly connected to the toothed plate (405).

5. The improved structure of a silent, slow-descent floor spring according to claim 2, characterized in that: One side of the rotating rod (403) penetrates the inner cavity of the outer shell (401) and extends to the outside of the outer shell (401), and a handwheel (8) is fixedly connected to the surface of the rotating rod (403).

6. The improved structure of a silent, slow-descent floor spring according to claim 1, characterized in that: The surface of the positioning pin (308) is fitted with a connecting rod (9), and a limiting seat (10) is provided on one side of the top of the connecting rod (9). One side of the limiting seat (10) is threadedly connected to the connecting rod (9) by a screw.

7. The improved structure of a silent, slow-descent floor spring according to claim 1, characterized in that: The bottom of the silent bearing (302) is provided with a sealing cover (11), which is sleeved on the surface of the positioning post (301).

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