180-degree floor spring for left-right door opening

Abstract

The utility model discloses a left-right door opening 180-degree floor spring, which relates to the technical field of door closing devices, and comprises a device main body, a cylinder body, a cam and a telescopic arm, the top of the device main body is provided with a cover plate, the cylinder body is arranged in the device main body, the top of one end of the cylinder body is provided with a sealing cover, and a connecting shaft is inserted in the sealing cover in a penetrating manner; when the device is used, a fastening bolt is rotated, then the fastening bolt can move front and back in the base, when the fastening bolt moves towards the interior of a cylinder body, a limiting pipe can be pushed to move, then one end of the limiting pipe can push one end of a spring, and the other end of the spring can move back and forth. The length of the spring can be compressed, the pressure applied to the end, close to the cam, of the telescopic arm by the spring can be increased, when the pressure is increased, the pressure applied to the surface of the cam by the limiting rod is increased, then the reset speed of the connecting shaft is increased, and therefore the reset speed of the door leaf is increased.

Description

Technical Field

[0001] This utility model relates to the technical field of door closing devices, specifically a floor spring that opens 180 degrees to the left and right. Background Technology

[0002] A crucial hardware component specifically designed for floor spring doors comprises several key parts to ensure smooth opening and closing of the door. A search revealed a Chinese patent with authorization number CN213418806U, which discloses a floor spring. While this floor spring's integrated roller can be driven by a drive unit to move towards a cam, improving the gap between the integrated roller and the cam blades, and after the cam disengages from its 90-degree hold, the cam blades' arc can closely contact the integrated roller, thereby reducing the mechanical idle angle and improving the stability of the floor spring's speed, the spring pressure is not adjustable. This results in low adjustability, preventing the adjustment of the spring pressure according to actual use, and consequently, the inability to adjust the door leaf reset speed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a 180-degree left and right opening door floor spring, which solves the problem mentioned in the background art that the internal spring pressure of existing floor springs is not adjustable, thus making it impossible to adjust the door leaf reset speed according to actual use.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a left-right opening door spring, comprising a device body, a cylinder, a cam, and a telescopic arm. A cover plate is provided on the top of the device body, and a cylinder is located inside the device body. A sealing cap is installed on the top of one end of the cylinder, and a connecting shaft is inserted inside the sealing cap. A cam is fitted on the outer side of the bottom of the connecting shaft. The cam is located inside one end of the telescopic arm, and three limiting rods are provided on the outer side of the cam, with the outer surfaces of the limiting rods tightly fitted to the cam surface. The bottom and top ends of the limiting rods are welded to the telescopic arm. A spring is fitted on the outside of the telescopic arm, and the other end of the telescopic arm is inserted inside a limiting tube. The limiting tube is rotatably connected to one end of a fastening bolt, and the fastening bolt is threadedly connected to the inside of a base. The base is welded to one end of the cylinder.

[0005] Preferably, the inner wall of the device body is provided with positioning holes, which are connected to the cover plate by mounting screws. There are two cover plates, which are symmetrically distributed, and the top surface of the cover plate is flush with the top of the mounting screw. When inspecting the inside of the device body, it is not necessary to disassemble the door leaf connected to the connecting shaft. The cover plate can be disassembled by removing the two mounting screws, thereby enabling the inspection of the inside of the device.

[0006] Preferably, the cylinder body has first adjusting bolts distributed on the left and right sides. One end of the first adjusting bolt is threaded to the inside of the cylinder body, and the other end of the first adjusting bolt is tightly fitted to the inner wall of the device body. By rotating the first adjusting bolt, the extension and retraction length of the first adjusting bolt can be adjusted, thereby moving the cylinder body left and right.

[0007] Preferably, the cylinder body is provided with a second adjusting bolt at both the front and rear ends. One end of the second adjusting bolt is threaded to the inside of the cylinder body, and the other end of the second adjusting bolt is tightly fitted to the inner wall of the device body. By rotating the second adjusting bolt, the extension and retraction length of the second adjusting bolt can be adjusted, thereby moving the cylinder body in the front and rear position.

[0008] Preferably, the width of one end of the telescopic arm is greater than the inner diameter of the spring, and a circular slot is provided at one end of the telescopic arm. There is a gap between the other end of the telescopic arm and one end of the limiting tube, and the cross-section of the limiting tube is elliptical.

[0009] This utility model provides a floor spring that opens 180 degrees to the left and right. It has the following beneficial effects:

[0010] (1) The left and right opening 180-degree floor spring of this device, when in use, rotates the fastening bolt, so that the fastening bolt can move back and forth inside the base. When the fastening bolt moves into the cylinder, it will push the limit tube to move, so that one end of the limit tube can push one end of the spring, so that the length of the spring can be compressed, so that the pressure of the spring on the end of the telescopic arm near the cam can be increased. When the pressure increases, the pressure of the limit rod on the cam surface increases, thereby increasing the speed of resetting the connecting shaft, and thus increasing the speed of resetting the door leaf.

[0011] (2) The 180-degree left and right opening door floor spring of this device has a split cover plate, which is formed by symmetrical splicing of two cover plates. When inspecting the inside of the device, it is not necessary to disassemble the door leaf connected to the connecting shaft. The cover plate can be disassembled by removing the two mounting screws, so as to inspect the inside of the device. By rotating the first adjusting bolt, the extension length of the first adjusting bolt can be adjusted, thereby moving the cylinder body left and right. By rotating the second adjusting bolt, the extension length of the second adjusting bolt can be adjusted, thereby moving the cylinder body forward and backward, thereby improving the adjustability of the device.

[0012] This solves the problem that the spring pressure inside existing floor springs is not adjustable, thus preventing the door leaf reset speed from being adjusted according to actual use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the spring structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the telescopic arm structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the cam structure of this utility model.

[0018] In the diagram, 1. Main body of the device; 2. Cover plate; 3. Mounting screw; 4. Cylinder; 5. First adjusting bolt; 6. Second adjusting bolt; 7. Positioning hole; 8. Sealing cover; 9. Connecting shaft; 10. Cam; 11. Telescopic arm; 12. Limiting rod; 13. Spring; 14. Limiting tube; 15. Base; 16. Fastening bolt. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1:

[0021] A 180-degree left-right opening door floor spring includes a main body 1, a cylinder 4, a cam 10, and a telescopic arm 11. A cover plate 2 is provided on the top of the main body 1. The cylinder 4 is located inside the main body 1. A sealing cover 8 is installed on the top of one end of the cylinder 4. A connecting shaft 9 is inserted inside the sealing cover 8. The cam 10 is fitted onto the outer side of the bottom of the connecting shaft 9. The cam 10 is located inside one end of the telescopic arm 11, and three limiting rods 12 are provided on the outer side of the cam 10. The outer surfaces of the limiting rods 12 are tightly fitted to the surface of the cam 10. The bottom and top ends of the limiting rods 12 are welded to the telescopic arm 11. A spring 13 is fitted onto the outside of the telescopic arm 11, and the other end of the telescopic arm 11 is inserted into a limiting tube 14. The limiting tube 14 is fastened with a screw. One end of bolt 16 is rotatably connected, and fastening bolt 16 is threadedly connected to the inside of base 15. Base 15 is welded to one end of cylinder 4. By rotating fastening bolt 16, fastening bolt 16 can move back and forth inside base 15. When fastening bolt 16 moves into cylinder 4, it pushes limit tube 14 to move. Then, one end of limit tube 14 can push one end of spring 13, thereby compressing the length of spring 13. This increases the pressure exerted by spring 13 on the end of telescopic arm 11 near cam 10. When the pressure increases, the pressure exerted by limit rod 12 on the surface of cam 10 increases, thereby increasing the speed of resetting connecting shaft 9, and thus increasing the speed of resetting door leaf.

[0022] Example 2:

[0023] The inner wall of the main body 1 of the device is provided with positioning holes 7. The positioning holes 7 are connected to the cover plate 2 by mounting screws 3. There are two cover plates 2, which are symmetrically distributed and the top surface of the cover plate 2 is flush with the top of the mounting screw 3. First adjusting bolts 5 are distributed on the left and right sides of the cylinder body 4. One end of the first adjusting bolt 5 is threaded into the inside of the cylinder body 4, and the other end of the first adjusting bolt 5 is tightly fitted to the inner wall of the main body 1 of the device. Second adjusting bolts 6 are provided at the front and rear ends of the cylinder body 4. One end of the second adjusting bolt 6 is threaded into the inside of the cylinder body 4, and the other end of the second adjusting bolt 6 is tightly fitted to the inner wall of the main body 1 of the device. The cover plate 2 is a split type, which is formed by symmetrical splicing of two cover plates 2. When inspecting the inside of the main body 1 of the device, it is not necessary to disassemble the door leaf connected to the connecting shaft 9. The cover plate 2 can be disassembled by removing the two mounting screws 3, so that the inside of the device can be inspected. By rotating the first adjusting bolt 5, the extension and retraction length of the first adjusting bolt 5 can be adjusted, thereby moving the cylinder 4 left and right. By rotating the second adjusting bolt 6, the extension and retraction length of the second adjusting bolt 6 can be adjusted, thereby moving the cylinder 4 back and forth, thereby improving the adjustability of the device.

[0024] Working principle: When in use, the device rotates the fastening bolt 16, allowing it to move back and forth inside the base 15. As the fastening bolt 16 moves into the cylinder 4, it pushes the limiting tube 14, which in turn pushes one end of the spring 13, compressing the spring 13 and increasing the pressure it exerts on the telescopic arm 11 near the cam 10. This increased pressure leads to increased pressure on the surface of the cam 10 by the limiting rod 12, thus increasing the speed of resetting the connecting shaft 9. Rotating the first adjusting bolt 5 adjusts its extension length, allowing the cylinder 4 to move left and right. Rotating the second adjusting bolt 6 adjusts its extension length, allowing the cylinder 4 to move back and forth. The working principle of the floor spring in this design is existing technology and will not be elaborated further.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A floor spring that opens 180 degrees to the left and right, characterized in that: The device includes a main body (1), a cylinder (4), a cam (10), and a telescopic arm (11). The main body (1) is provided with a cover plate (2) on top. The cylinder (4) is provided inside the main body (1). A sealing cover (8) is installed on the top of one end of the cylinder (4). A connecting shaft (9) is inserted inside the sealing cover (8). A cam (10) is fitted on the outer side of the bottom of the connecting shaft (9). The cam (10) is located inside one end of the telescopic arm (11), and three limiters are provided on the outer side of the cam (10). The rod (12) is tightly fitted to the outer surface of the cam (10). The bottom and top ends of the limiting rod (12) are welded to the telescopic arm (11). The telescopic arm (11) is fitted with a spring (13) on its outside. The other end of the telescopic arm (11) is inserted into the limiting tube (14). The limiting tube (14) is rotatably connected to one end of the fastening bolt (16). The fastening bolt (16) is threadedly connected to the inside of the base (15). The base (15) is welded to one end of the cylinder (4).

2. The left and right opening door 180-degree floor spring according to claim 1, characterized in that: The inner wall of the main body (1) of the device is provided with a positioning hole (7). The positioning hole (7) is connected to the cover plate (2) by a mounting screw (3). There are two cover plates (2), and the two cover plates (2) are symmetrically distributed. The top surface of the cover plate (2) is flush with the top of the mounting screw (3).

3. The left and right opening door 180-degree floor spring according to claim 1, characterized in that: The cylinder (4) has first adjusting bolts (5) distributed on the left and right sides. One end of the first adjusting bolt (5) is threaded to the inside of the cylinder (4), and the other end of the first adjusting bolt (5) is tightly fitted to the inner wall of the device body (1).

4. The left and right opening door 180-degree floor spring according to claim 1, characterized in that: The cylinder (4) is provided with a second adjusting bolt (6) at both ends. One end of the second adjusting bolt (6) is threaded to the inside of the cylinder (4), and the other end of the second adjusting bolt (6) is tightly fitted to the inner wall of the device body (1).

5. The left and right opening door 180-degree floor spring according to claim 1, characterized in that: The telescopic arm (11) has a width at one end that is greater than the inner diameter of the spring (13), and a circular hole is provided at one end of the telescopic arm (11). There is a gap between the other end of the telescopic arm (11) and one end of the limiting tube (14).

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